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HomeMy WebLinkAbout2022-07-05 PC Regular Meeting Agenda Packet CITY OF PALM DESERT REGULAR PALM DESERT PLANNING COMMISSION MEETING AGENDA TUESDAY, JULY 5, 2022 – 6:00 P.M. ZOOM VIRTUAL MEETING I. CALL TO ORDER II. ROLL CALL III. PLEDGE OF ALLEGIANCE IV. SUMMARY OF CITY COUNCIL ACTIONS V. ORAL COMMUNICATIONS Any person wishing to discuss any item not appearing on the agenda may address the Planning Commission via the Zoom session at this point by giving his/her name and address for the record. Remarks shall be limited to a maximum of three (3) minutes unless the Planning Commission authorizes additional time. Because the Brown Act does not allow the Planning Commission to take action on items not on the agenda, members will not enter into discussion with speakers but may briefly respond or instead refer the matter to staff for a report and recommendation at a future Planning Commission meeting. THREE OPTIONS FOR PARTICIPATING IN THE MEETING Option 1 – To Participate by email: 1. Send your comments by email to: planning@cityofpalmdesert.org. Emails received by 3:00 p.m. prior to the meeting will be made part of the record and distributed to the Planning Commission. This method is encouraged because it will give the Commissioners the opportunity to reflect upon your input. Emails will not be read aloud. Pursuant to Assembly Bill No. 361, the Planning Commission may be conducted via teleconference/virtual meeting and there will be no in-person public access to the meeting location. AGENDA REGULAR PLANNING COMMISSION MEETING JULY 5, 2022 2 Option 2 – To Participate and Provide Verbal Comments by Using Your Internet, then click on “Launch Meeting.” 1. Click the link: https://palmdesert.zoom.us/j/84739707419 Option 3 – To Listen and Provide Verbal Comments Using Your Telephone 1. Dial (for higher quality, dial a number based on your current location): Telephone US: +1 669 219 2599 or +1 669 900 9128 or +1 213 338 8477 or +1 602 753 0140 or +1 971 247 1195 or +1 253 215 8782 2. Enter the Webinar ID: 847 3970 7419 followed by #. 3. Indicate that you are a participant by pressing # to continue. 4. You will hear audio of the meeting in progress. Remain on the line if the meeting has not yet started. 5. During the meeting, press *9 to raise your hand to be added to the queue to provide public comment. When it is your turn, City staff will announce your name or phone number. To mute or unmute your phone during the meeting, press *6. LIMIT YOUR COMMENTS TO THREE (3) MINUTES Staff reports and documents for agenda items are available for public inspection at the Planning/Land Development Division and on the City’s website: www.cityofpalmdesert.org. VI. CONSENT CALENDAR ALL MATTERS LISTED ON THE CONSENT CALENDAR ARE CONSIDERED TO BE ROUTINE AND WILL BE ENACTED BY ONE ROLL CALL VOTE. THERE WILL BE NO SEPARATE DISCUSSION OF THESE ITEMS UNLESS MEMBERS OF THE PLANNING COMMISSION REQUEST SPECIFIC ITEMS BE REMOVED FROM THE CONSENT CALENDAR FOR SEPARATE DISCUSSION AND ACTION UNDER SECTION VII. CONSENT ITEMS HELD OVER, OF THE AGENDA. A. MINUTES of the Regular Planning Commission meeting of June 7, 2022. Rec: Approve as presented. VII. CONSENT ITEMS HELD OVER VIII. NEW BUSINESS A. SELECTION of a Chairperson and Vice-Chairperson. Rec: By Minute Motion, nominate and appoint positions. AGENDA REGULAR PLANNING COMMISSION MEETING JULY 5, 2022 3 B. SELECTION of Commission liaisons for the Cultural Arts Committee and Parks and Recreation Commission. Rec: By Minute Motion, nominate and appoint positions. IX. PUBLIC HEARINGS Anyone who challenges any hearing matter in court may be limited to raising only those issues he or she raised at the public hearing described herein, or in written correspondence delivered to the Planning Commission at, or prior to, the public hearing. Remarks shall be limited to a maximum of three minutes unless the Planning Commission authorizes additional time. A. REQUEST FOR CONSIDERATION to adopt a Mitigated Negative Declaration under the California Environmental Quality Act (CEQA) and approval of a Precise Plan (PP) for a 176-unit multi-family (affordable housing) project on an 11-acre site located at the southwest corner of Gateway Drive and Dick Kelly Drive and west of Cortesia Way. Case No. PP22-0002 (UHC 00357 Palm Desert, LP, Santa Ana, California, Applicant). Rec: Waive further reading and adopt Planning Commission Resolution No. 2814, adopting a Mitigated Negative Declaration and approving Case No. PP22-0002. B. REQUEST FOR COSIDERATION to adopt a Notice of Exemption under CEQA and approval of a Precise Plan for modifications to The Living Desert Zoo and Gardens, including expanding the existing on-site parking, construction of a single- story facilities building, two (2) single-story storage buildings, a private drive aisle for staff, and modifications of the existing median on Portola Avenue for a new driveway entry at 47900 Portola Avenue. Case No. PP22-0001 (PVG Architects, Palm Desert, California, Applicant). Rec: Waive further reading and adopt Planning Commission Resolution No. 2815, adopting a Notice of Exemption and approving Case No. PP22-0001. X. MISCELLANEOUS None XI. COMMITTEE MEETING UPDATES A. Cultural Arts Committee B. Parks & Recreation Commission XII. REPORTS AND REMARKS AGENDA REGULAR PLANNING COMMISSION MEETING JULY 5, 2022 4 XIII. INFORMATION ITEMS A. Attendance Record XIV. ADJOURNMENT I hereby certify under penalty of perjury under the laws of the State of California that the foregoing agenda for the Planning Commission was posted on the City Hall bulletin board not less than 72 hours prior to the meeting. Dated this 1st day of July 2022. Monica O’Reilly Monica O’Reilly, Management Specialist II CITY OF PALM DESERT REGULAR PALM DESERT PLANNING COMMISSION MEETING PRELIMINARY MINUTES TUESDAY, JUNE 7, 2022 – 6:00 P.M. ZOOM VIRTUAL MEETING I. CALL TO ORDER Chair John Greenwood called the meeting to order at 6:00 p.m. II. ROLL CALL Present: Absent: Chair John Greenwood Commissioner Joseph Pradetto Vice-Chair Nancy DeLuna (Left at 6:05 p.m.) Commissioner Ron Gregory Commissioner Lindsay Holt Also Present: Craig Hayes, Assistant City Attorney Richard Cannone, Deputy Director of Development Services Rosie Lua, Planning Manager Kevin Swartz, Associate Planner Nick Melloni, Associate Planner Melinda Gonzalez, Management Specialist II III. PLEDGE OF ALLEGIANCE Commissioner Ron Gregory led the Pledge of Allegiance. IV. SUMMARY OF CITY COUNCIL ACTIONS Deputy Director of Development Services Richard Cannone provided an oral summary of the City Council study session held on May 12, 2022, regarding cannabis lounges. He also summarized pertinent City Council actions from the meetings held on May 12, 2022, and May 25, 2022. He noted outdoor dining decks is an agenda item for the City Council meeting scheduled on June 9, 2022. PRELIMINARY MINUTES REGULAR PLANNING COMMISSION MEETING JUNE 7, 2022 2 V. ORAL COMMUNICATIONS None VI. CONSENT CALENDAR A. MINUTES of the Regular Planning Commission meeting of May 3, 2022. Rec: Approve as presented. Upon a motion by Vice-Chair DeLuna, seconded by Commissioner Gregory and a 4-0 vote of the Planning Commission, the Consent Calendar was approved as presented (AYES: DeLuna, Greenwood, Gregory, and Holt; NOES: None; ABSENT: Pradetto). VII. CONSENT ITEMS HELD OVER None VIII. NEW BUSINESS None IX. PUBLIC HEARINGS A. REQUEST FOR CONSIDERATION to adopt a resolution under the California Environmental Quality Act (CEQA) and approval of a Precise Plan (PP) for a 150- unit multi-family (affordable housing) project adjacent to the Spanish Walk community along the east side of Gerald Ford Drive, north of Frank Sinatra Drive, and south of the I-10/Railroad. Case No. PP22-0004 (Western National Group, Irvine, California, Applicant). The staff report(s) and Zoom video of the meeting are available on the City’s website. Click on the following link to access: www.planning-commission- information-center. Vice-Chair Nancy DeLuna advised the Commission of the need to recuse herself from this item due to a conflict of interest. Vice-Chair DeLuna left at 6:05 p.m. for the remainder of the meeting. Associate Planner Kevin Swartz provided a presentation on the item and responded to questions from the Planning Commission. For the record, Planning Manager Rosie Lua stated that staff received two public comments for this item and were provided to the Planning Commission for review before the meeting. PRELIMINARY MINUTES REGULAR PLANNING COMMISSION MEETING JUNE 7, 2022 3 Chair Greenwood declared the public hearing open and invited public testimony FAVORING or OPPOSING this matter. Mr. Brian Gilchrist, Managing Director of Development for Western National Group, the applicant, and his collective team spoke about the project and its operation. Mr. Mike Whittle, Paseo Bravo (Spanish Walk), Palm Desert, expressed his concern with the landscape design and noted that in his experience when trees are planted close to the buildings, it allows rats access to jump onto the residential building. Additionally, he asserted his concern that the entry off Gerald Ford Drive is a blind left turn, creating a dangerous road condition. Mr. Whittle requested that the applicant paint the left-turn lane at this time to mitigate this condition and not wait until the future fire station is built to address it. James, Spanish Walk resident, Palm Desert, addressed the Commission and asked for clarification on the purpose of the public hearing, to which Chair Greenwood and Ms. Lua responded. James declared he was opposed to this project and did not offer further explanation as to why. With no further testimony offered, Chair Greenwood declared the public hearing closed. Discussion on the item ensued with Commissioners providing comments in support for the proposed project. Commissioner Gregory moved to waive further reading and adopt Planning Commission Resolution No. 2813, approving Case No. PP22-0004. The motion was seconded by Commissioner Holt and was carried by a 3-0 vote (AYES: Greenwood, Gregory, and Holt; NOES: None; ABSENT: DeLuna and Pradetto). X. MISCELLANEOUS None XI. COMMITTEE MEETING UPDATES A. Cultural Arts Committee Commissioner Lindsay Holt reported that the Cultural Arts Committee’s budget for 2022-2023 will be $909,000, which includes maintenance work, capital improvements projects, San Pablo roundabout sculpture (Phase Two), El Paseo Exhibition, El Paseo art pad and lighting replacement, stolen sculpture replacement at Freedom Park, and more. She also shared a picture of the winning art sculpture, “Sunburst,” which will be placed in the San Pablo roundabout (Phase One). PRELIMINARY MINUTES REGULAR PLANNING COMMISSION MEETING JUNE 7, 2022 4 B. Parks and Recreation Commission Chair Greenwood stated he was unable to attend the last Parks & Recreation Commission meeting. In reply to the inquiry from Chair Greenwood, Ms. Lua said there was no update for the Parks and Recreation Commission. XII. REPORTS AND REMARKS Mr. Cannone asked Commissioners about their availability for the July 5, 2022, Planning Commission meeting, which immediately follows the 4th of July holiday, to determine if there will be a quorum. Commissioners in attendance responded they would be available to attend the meeting. XIII. INFORMATION ITEMS Ms. Lua advised the Commission of the new attendance record policy for commissions and committees implemented at the direction of the City Council, and she noted this would be a recurring informational item on the agenda. XIV. ADJOURNMENT With the Planning Commission concurrence, Chair Greenwood adjourned the meeting at 7:00 p.m. JOHN GREENWOOD, CHAIR ATTEST: MARTĎ1$/9$5(=, SECRETARY __ 0(/,1'$*21=$/(=, RECORDING SECRETARY Page 1 of 9 CITY OF PALM DESERT STAFF REPORT MEETING DATE: July 5, 2022 PREPARED BY: Kevin Swartz, Associate Planner REQUEST: CONSIDERATION TO ADOPT A MITIGATED NEGATIVE DECLARATION UNDER THE CALIFORNIA ENVIRONMENTAL QUALITY ACT (CEQA) AND APPROVAL OF A PRECISE PLAN (PP) FOR A 176-UNIT MULTI-FAMILY (AFFORDABLE HOUSING) PROJECT ON AN 11-ACRE SITE LOCATED AT THE SOUTHWEST CORNER OF GATEWAY DRIVE AND DICK KELLY DRIVE AND WEST OF CORTESIA WAY. RECOMMENDATION: Waive further reading and adopt Planning Commission Resolution No. 2814: 1. Adopting a Mitigated Negative Declaration (MND) under the CEQA; and 2. Approving PP22-0002 for the proposed 176-unit multi-family (affordable housing) residential community consisting of four (4) three-story apartment buildings, five (5) two-story apartment buildings, a single-story clubhouse, pool area, and private outdoor recreation areas on an 11- acre site. ARCHITECTURAL REVIEW COMMISSION RECOMMENDATION: The Architectural Review Commission (ARC) reviewed the proposed project, including architecture and landscaping, at two (2) separate meetings (March 22, 2022, and April 12, 2022). On March 22, 2022, the Architectural Review Commission (ARC) preliminary reviewed and provided design comments to the applicant and continued the project on a 4-0 vote with Commissioners Lambell and McAuliffe absent. Comments and concerns provided by Commissioners during the discussion include, but were not limited to: x Explore alternative options for placement of the A/C ground units. Consider using low walls in addition to landscape to screen ground-mounted utility equipment and to assist with noise mitigation, with particular attention to street exposed equipment. x Revisit solar allocation on carports and confirm it meets solar requirements. x Consider staggering top caps from accent board on stone detail at the entrances. x Provide locations of B-vents and consider using chimney elements for screening grouped vents. x Street exposed windows should be further recessed. x Increase the depth of the base to provide an offset from the top floor. x Confirm the number of trash enclosures is adequate for the number of units and offset enclosures from the drive aisle. City of Palm Desert Case No. PP22-0002 Urban Crossings (176-units) Page 2 of 9 On April 12, 2022, the ARC was complimentary of the design quality of the revised project. The ARC recommended approval of the project by a 4-0 vote with Commissioner Van Vliet and McAuliffe absent, subject to the following conditions of approval: x Explore options for thickening the base element an additional two (2) inches using a band accent as a cap element on base. x Windows should be attached to two-by-four (2x4) nailers to allow a minimum of two-inch (2”) recesses (not including the trim); the upper-level windows should be recessed as well. x Project revisions will be reviewed by City staff and returned to the ARC if any items cannot be resolved with the applicant. The conditions of approval have been incorporated into the exhibits and design that are being presented to the Planning Commission and have been reviewed by staff. A condition of approval has been applied to the resolution stating that prior to the approval of a building permit, the applicant shall comply with the conditions made by the City’s Architectural Review Commission (ARC), as referenced in the April 12, 2022, Notice of Action. EXECUTIVE SUMMARY: Approval of staff’s recommendation will adopt a resolution approving the project, consisting of a PP and an MND for a 176-unit multi-family (income-restricted) apartment community on an 11-acre site. The project consists of four (4) three-story apartment buildings, five (5) two-story apartment buildings, a single-story clubhouse, pool area, landscaping, private outdoor recreation areas, 352 on-site parking spaces, and related off-site street improvements. The project site was identified within the City’s Housing Element 5th Cycle (2006-2014 planning period) to provide for 176 income-restricted units. On March 10, 2022, the City Council adopted the 6th Cycle, which allocated 219 income-restricted units on this site. However, since the project was deemed a complete application by the Planning Division prior to the City Council’s action on March 10, 2022, the project is grandfathered under the 5th Cycle requiring 176 income-restricted units. The applicant has proposed 175 units (1 manager unit) as affordable, and a condition of approval of this project will require approval of a Housing Agreement by the City Council. The General Plan land use designation is Town Center Neighborhood (TCN), which allows single- and multi-family dwellings with densities between seven (7) and 40 dwelling units per acre (du/ac). The site is zoned Planned Residential, up to 22 du/ac (PR-22). The development of 15 du/ac complies with the density range for both the General Plan and zoning designations. The project also conforms to the applicable development standards of the PR zone. BACKGROUND/ANALYSIS: A. Property Description: The project site consists of two vacant parcels totaling 11 acres located at the southeast corner of Gateway Drive and Dick Kelly Drive. The project site is in the northern portion of the City that has steadily developed into commercial, industrial and residential uses. The project site to the west is vacant, to the north is a multifamily residential community, to the east is a single-family residential community and to the south is a vacant property owned by the Palm Springs Unified School District (PSUSD) and reserved for a future K-8 school. City of Palm Desert Case No. PP22-0002 Urban Crossings (176-units) Page 3 of 9 The terrain of this property has an existing elevation grade that is significantly higher on the west end and slopes approximately 25 feet down to the east. The on-site retention basin is at the northeast corner of the project. B. Current Zoning & General Plan Land Use Designation: Zone: Planned Residential – 22 du/ac (PR-22) General Plan: Town Center Neighborhood (TCN) – 7 to 40 du/ac C. Adjacent Zoning & Land Use: North: PR-13 – Monterey Ridge South: Public Institution (P) – PSUSD future K-8 school East: PR-5 – Ponderosa I and II West: MCP Specific Plan (PR-22) - Vacant Project Description: The applicant, UHC 00357 Palm Desert, is requesting a PP to develop a 176-unit multi-family apartment community on an 11-acre vacant site. The proposed project is a gated community that includes the following: x Five (5) two-story residential apartment buildings. x Four (4) three-story residential apartment buildings. x One (1) single-story 5,500± square-foot clubhouse building containing a leasing area, clubhouse, co-working space, and fitness area. x One (1) 4,400± square-foot amenity area and pool deck. x 352 on-site parking spaces. x Open space amenities include a dog park, walkways, and passive open space areas. x One (1) basin for on-site stormwater retention. x Off-site improvements include: o Public sidewalks and utility corridors along the project frontages. o One (1) gated vehicular access driveway off Dick Kelly Drive (main entrance). o One (1) gated vehicular access driveway off Gateway Drive (secondary access). The proposed project is an affordable housing development that includes 175 affordable units and 1 manager unit. The affordability income levels are currently under review for compliance by the Palm Desert Housing Authority. A condition of approval of this project will require approval of a Housing Agreement by the City Council. A. Site Plan: The gated community is designed with two (2) vehicular access driveways. The primary access is off Dick Kelly Drive, which is a centralized two-lane entry aligned with Falling Waters Drive on the north side. The access will be restricted along Dick Kelly Drive to the following: x Westbound traffic right-in and right-out x Eastbound traffic left-turn lane into the project City of Palm Desert Case No. PP22-0002 Urban Crossings (176-units) Page 4 of 9 The Dick Kelly Drive entry includes decorative pavers with a roundabout that terminates at the recreation building. The secondary access is off Gateway Drive, which includes full turning movements (ingress and egress to the north and south). To the east of the project is Cortesia Way, which does not include an access point. The project is lined with a row of five (5) two-story buildings and a retention basin (east-end) along Dick Kelly Drive. Behind those buildings is the second row of four (4) three-story buildings and the single-story clubhouse and pool facility. The project provides an internal circular access drive aisle entering Dick Kelly Drive, around the second row of buildings and exits Gateway Drive. The project provides 352 parking spaces, spread throughout the internal circular access. Half of the parking spaces include carports, while the remaining half will be uncovered. The site plan provides pedestrian connections throughout the site with pathways and links between apartment buildings and on-site amenities. Trash enclosures are also located throughout the project within the parking areas behind the buildings to minimize visibility from public frontages and traffic conflicts. The plan includes two (2) exterior laundry buildings. One is located at the east end directly behind the retention basin, and the other is located on the west end in front of Building 10. The project includes a five-foot-high (5’) combination wall consisting of block and wrought iron around the perimeter of the project, gates at the entries, and a monument sign located along Dick Kelly Drive at the main entrance. B. Architecture: The proposed architecture is a Prairie Revival style featuring horizontal and rectilinear modulations. The Prairie style is characterized with varying wall planes, roof overhangs, two-toned (lower stucco and upper bands and cementitious siding) and large window groupings. The material palette consists of two (2) textures of stucco, cementitious siding, stone veneer, and concrete tile roofing. The clubhouse is a single-story building that also has a Prairie Revival architecture style and matching materials and colors. Buildings and Screening The residential apartment buildings are comprised of two (2) plan types, which are summarized below: Plan Type Number of Buildings Number of bedrooms Square footage Roof Line Height Type A 5 (16 units in each building) 1 Bed – 4 units 2 Bed – 8 units 3 Bed – 4 units 1 Bed – 583 2 Bed – 820-944 3 Bed – 1,082 30-feet City of Palm Desert Case No. PP22-0002 Urban Crossings (176-units) Page 5 of 9 The buildings feature first-floor walk-up accessibility. Access to the upper floor units will be provided by multiple staircases within an enclosed area of the building. Additionally, the ground floor includes utility rooms for screening electrical, gas, and water utilities. All HVAC units are ground-mounted and grouped (either in four or six air conditioning (A/C) units) at the corners of each building. The units will be screened by a decorative wall and landscaping. C. Landscape: The proposed landscape includes perimeter roadway frontages, retention areas, and common areas. Shade trees are located on the perimeter and internal drive aisles of the site. The proposed landscape plan has a low and moderate water usage planting material palette with mixes of desert native species for trees and shrubs. The project includes large trees throughout the site consisting of drought-tolerant 48-inch box Fruitless Olive trees, 36-inch box Desert Museum trees, and 24-inch box Maverick Thornless Mesquite, Citrus, Indian Rosewood, Tipus, Shoestring Acacia, Palo Brea, and Mulga trees. Also proposed are a mix of low water usage five-gallon (5) shrubs, including Coral Bells, Desert Cassia, Blue Bells, Torch Glow, Brittle Brush, Bougainvillea, and several other shrubs and accent plants as shown on the landscape plan. A material palette showing the proposed materials used for site amenities is also shown on the landscape plan. Analysis: The approval requires a PP by the Planning Commission under Chapter 25.72 of the Palm Desert Municipal Code (PDMC). Land Use Compatibility The project site is designated TCN by the Palm Desert General Plan. The TCN designation is intended to provide moderate to higher intensity neighborhood development that features a variety of housing choices, walkable streets, and mixed uses with an allowable density range of seven (7) to 40 du/ac. The proposed project of 176 multi-family units at 15 du/ac falls within the allowable density range established for the TCN land use designation. The proposed project provides access along Dick Kelly Drive and Gateway Drive, which are secondary roadways as defined by the General Plan Circulation Element (Chapter 4, see page 55). To the east of the project is Cortesia Way, which does not include an access point. Development along these streets includes a mix of residential densities and housing types, including existing Plan Type Number of Buildings Number of bedrooms Square footage Roof Line Height Type B 4 (24 units in each building) 1 Bed – 6 units 2 Bed – 10 units 3 Bed – 8 units 1 Bed – 583 2 Bed – 820-944 3 Bed – 1,082 40-feet City of Palm Desert Case No. PP22-0002 Urban Crossings (176-units) Page 6 of 9 detached single-family residential, attached single-family, and multi-family uses. The proposed project meets the TCN land use designation because it adds a multi-family housing choice to the area, which incorporates walkability. The proposed project is consistent with the Goals and Policies of the General Plan, as demonstrated below: General Plan Conformance: Land Use Policy No. 3.3, Variety of types of neighborhoods. Promote a variety of neighborhoods within the City and ensure that neighborhood types are dispersed throughout the City. The project contains 175 income-restricted units (affordable), adding to the affordability of housing stock within the City. The project promotes multi-family residential that is in keeping with the mix of higher and lower (single-family) densities in the area, which meets the intent of this policy. Land Use Policy No. 3.21, Infill neighborhoods. In existing developed areas of the City, encourage development that repairs connectivity, adds destinations, and encourages complete neighborhoods. This can be achieved by increasing intersection density, reducing block size, and providing new community amenities and destinations. The proposed project supports the expansion of housing by providing a 15 du/ac multi-family resi dential development on a vacant property fronting Dick Kelly Drive. The project is designed with internal pedestrian access and provides common area recreational amenities available to all residents, thereby creating a pedestrian, family-oriented atmosphere. Housing Element The Housing Element, a component of the General Plan, identifies the City’s housing conditions and needs and establishes goals, objectives, and policies that are the foundation of the City’s housing and growth strategy. On May 12, 2011, the City Council adopted Resolution No. 2011-24, approving an update to the Housing Element for the 5th Cycle (2006-2014 planning period). The 5th Cycle identified this project site as Letter “D” allocating 176 affordable units. On January 10, 2022, the applicant submitted the PP application including supporting documents for the proposed project which was deemed a complete application on February 8, 2022. On March 10, 2022, the City Council approved an update to the Housing Element for the 6th Cycle (2021-2029 planning period), which is currently under review by the State Housing and Community Development Department (HCD) for certification. The 6th Cycle Housing Element identifies this site as Letter “D” allocating 219 affordable units. In consultation with the City Attorney, the project was grandfathered under the 5th Cycle requiring a minimum of 176 affordable units since the project was deemed complete before the City Council’s March 10, 2022, approval of the 6th Cycle. Since the current Housing Element (6th Cycle) allocated the site for 219 affordable units, there is a net loss of 43 affordable units. City of Palm Desert Case No. PP22-0002 Urban Crossings (176-units) Page 7 of 9 On June 7, 2022, the Planning Commission adopted Resolution No. 2813, approving a 150-unit multi-family (affordable housing) development adjacent to Spanish Walk. The 150-unit project was allocated 21 affordable units in the Housing Element (5th and 6th Cycles). The applicant provided 149 affordable units for a surplus of 128 affordable units that may be applied toward future projects identified in the Housing Element. To cover this project’s net loss of 43 affordable units (the 5th Cycle allocated 176 units and the 6th Cycle allocated 219 units), staff is allocating 43 of the 128 (surplus) affordable units to cover the net loss. This will leave a remaining surplus of 85 affordable units that may be applied to future projects. The proposed income levels for the proposed 176 affordable units are currently under review for compliance by the Palm Desert Housing Authority. A condition of approval of this project will require approval of a Housing Agreement by the City Council. Precise Plan Development Standards The proposed development complies with all setbacks (front, rear, and side yards), building height, lot coverage, and parking requirements of the PR zone. The proposed development standards are analyzed for conformance. Height: The PR zone allows for three-story buildings up to a maximum height of 40 feet pursuant to PDMC Section 25.10.050(B)(11). The maximum building heights for the two-story buildings are 30 feet and 40 feet for the three-story buildings, which are permitted by the zoning ordinance. Density: The PR zone allows a minimum of four (4) du/ac and a max of 40 du/ac pursuant to PDMC, Table 25.10-3. The proposed project is requesting 15 du/ac, which is within the threshold of the PR zone allowance. The table below summarizes the project’s conformance with development standards for the PR-22 zone: STANDARD PR-22 ZONE PROJECT CONFORMS Height 40’-0” 40’-0” Yes Front Setback - 30 feet Yes Rear Setback - 60+ feet Yes Street Side Setback - 15 to 60 feet Yes Parking 352 Onsite Spaces 352 Onsite Spaces Yes Parking Section 25.46.040 Parking Requirements of the PDMC establishes that multi-family dwellings require a minimum of two (2) parking spaces per unit. The 176-unit project would require a minimum of 352 on-site parking spaces per this standard. The project is proposing 352 parking spaces, which meets the minimum parking requirement. Section 25.46.040 requires a minimum of 50 percent of all parking to be shaded. The project provides 176 carport spaces, therefore, meeting the minimum requirement. City of Palm Desert Case No. PP22-0002 Urban Crossings (176-units) Page 8 of 9 Public Input: Public Notification: Public noticing was conducted for the July 5, 2022, Planning Commission meeting as required by PDMC Section 25.60.060 (Public Hearing and Public Notice). A public hearing notice was published on Friday, June 24, 2022, in The Desert Sun. Additionally, the City mailed 113 public hearing notices to all property owners within 1,000 feet of the project site. Community Engagement: Per Section 25.60.060, the applicant must provide adequate community engagement efforts since the project site is more than five (5) acres. The applicant held two (2) neighborhood meetings via Zoom on February 25, 2022, and May 3, 2022. The applicant mailed flyers to residents within 1,000 feet of the project to invite residents to the meetings. At the February 25, 2022, meeting, there were two (2) residents in attendance from a neighboring development. Staff was present to observe and answer any questions from the public. There were no concerns raised by attendees. At the May 3, 2022, meeting, there were three (3) residents in attendance (one business owner and two neighboring residents). One resident stated that the project architecture was well done, and no concerns were raised by the attendees. The City has not received any testimony in opposition or in favor of the project. Environment Review: Under the CEQA and the State CEQA Guidelines, an Initial Study has been prepared to analyze the environmental impacts of the project. On February 14, 2022, the City mailed consultation letters to the tribes (four) for AB 52 compliance. No tribes requested a consultation within the 30-day review period. The City circulated the Notice of Intent to Adopt an Initial Study (IS)/Mitigated Negative Declaration (MND) in The Desert Sun, the newspaper of record, on April 15, 2022, for the public review and comment period of no less than 20 days. The comment period closed on May 4, 2022, and the City did not receive any comments. In the City’s role as the lead agency under CEQA, the staff finds that the MND and Initial Study dated April 2022 contain a complete and accurate reporting of the environmental impacts associated with the Project. The documents have been completed in compliance with CEQA, the State CEQA Guidelines, and City of Palm Desert local CEQA guidelines. All environmental impacts of the Project are either insignificant or can be mitigated to a less than significant level pursuant to the mitigation measures outlined in the MND, Initial Study, and the Mitigation Monitoring and Reporting Program. Staff is recommending that the Planning Commission adopt the MND for the purposes of CEQA. City of Palm Desert Case No. PP22-0002 Urban Crossings (176-units) Page 9 of 9 Findings of Approval: Findings can be made in support of the project and under the City’s Municipal Code. Findings in support of this project are contained in Planning Commission Resolution No. 2814, attached to this staff report. REVIEWED BY: Department Director: Martin Alvarez Deputy Director: Richard Cannone, AICP City Attorney: N/A Finance Director: N/A Assistant City Manager: N/A City Manager: N/A ATTACHMENTS: 1. Draft Planning Commission Resolution No. 2814 2. MND (CEQA) 3. ARC Notice of Action for April 12, 2022 4. Public Hearing Notice 5. Project Exhibits PLANNING COMMISSION RESOLUTION NO. 2814 A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF PALM DESERT, CALIFORNIA, ADOPTING A MITIGATED NEGATIVE DECLARATION UNDER THE CALIFORNIA ENVIRONMENTAL QUALITY ACT (CEQA), AND APPROVAL OF A PRECISE PLAN (PP) FOR A 176-UNIT MULTI-FAMILY (AFFORDABLE HOUSING) PROJECT ON AN 11-ACRE SITE LOCATED AT THE SOUTHEAST CORNER OF GATEWAY DRIVE AND DICK KELLY DRIVE AND WEST OF CORTESIA WAY CASE NO. PP22-0002 WHEREAS, UHC 00357 Palm Desert, LP, a California Limited Partnership (“Applicant”), submitted a Precise Plan application for a 176-unit multi-family (affordable housing) development community consisting of four (4) three-story apartment buildings, five (5) two-story apartment buildings, a single-story clubhouse, pool area, private outdoor recreation areas, and associated parking areas on an 11-acre site (“Project”); and WHEREAS, the City of Palm Desert has an adopted General Plan and a certified Environmental Impact Report (EIR), SCH No. 2015081020 designating the site’s land use designation as Town Center Neighborhood (TCN); and WHEREAS,the Project site has a zoning designation of Planned Residential (PR-22). The PR has a density range of seven (7) to 40 units per acre. The development of 15 units per acre complies with the density range, and the Project also conforms to all applicable development standards of the PR zone; and WHEREAS,under Section 21067 of the Public Resources Code, Section 15367 of the State CEQA Guidelines (Cal. Code Regs., tit. 14, § 15000 et seq.), and the City of Palm Desert’s (“City’s”) Local CEQA Guidelines, the City is the lead agency for the Project; and WHEREAS,City staff reviewed the Project and prepared an Initial Study pursuant to State CEQA Guidelines Section 15063 to determine if the Project could have a significant effect on the environment; and WHEREAS,based on the Initial Study, which concluded that the Project would have potentially significant impacts but that those impacts could be reduced to less than significant levels with the implementation of the proposed mitigation measures, the City determined that a subsequent Mitigated Negative Declaration (“MND”) should be prepared for the Project, and an MND was prepared pursuant to Public Resources Code Sections 21064.5 and 21080, subdivision (c), and the State CEQA Guidelines section 15070 et seq; and WHEREAS,the Project was deemed a complete application on February 8, 2022 prior to the adoption of the Housing Element’s 6th Cycle adoption by City Council, therefore, the 176 income-restricted units are consistent with the allocation provided with the site in the Housing Element 5th Cycle (2006-2014 planning period). PLANNING COMMISSION RESOLUTION NO. 2814 2 WHEREAS, the Architectural Review Commission (ARC) of the City of Palm Desert, California, did on the 12th day of April 2022, consider the request by the Applicant at its meeting and recommended approval with conditions to the Planning Commission of the above-noted Project request; and WHEREAS, the Planning Commission of the City of Palm Desert, California, did on the 5th day of July 2022, hold a duly noticed public hearing to consider the request by Applicant for approval of the above-noted Project request; and WHEREAS, all other legal prerequisites to the adoption of this Resolution have occurred; and WHEREAS, at the said public hearing, upon hearing and considering all testimony and arguments, if any, of all interested persons desiring to be heard, the Planning Commission did find the following facts and reasons, which are outlined in the staff report, exist to justify approval of said request: NOW, THEREFORE, BE IT RESOLVED BY THE PLANNING COMMISSION OF THE CITY OF PALM DESERT, CALIFORNIA, AS FOLLOWS: SECTION 1. Recitals.The Planning Commission hereby finds that the foregoing recitals are true and correct and are incorporated herein as substantive findings of this Resolution. SECTION 2. Compliance with the CEQA. As the recommending body for the Project, the Planning Commission has reviewed and considered the information contained in the MND, Initial Study, and administrative record on file with the City and is available for review at 73510 Fred Waring Drive, Palm Desert, California. The MND and Initial Study have been completed in compliance with the CEQA (Pub. Res. Code § 21000 et seq: “CEQA”) and the State CEQA Guidelines. SECTION 3. Findings on Environmental Impacts. In the City’s role as the lead agency under CEQA, the Planning Commission finds that the MND and Initial Study dated April 2022 contain a complete and accurate reporting of the environmental impacts associated with the Project. The documents have been completed in compliance with CEQA, the State CEQA Guidelines, and City of Palm Desert local CEQA guidelines. All environmental impacts of the Project are either insignificant or can be mitigated to a less than significant level pursuant to the mitigation measures outlined in the MND, Initial Study, and the Mitigation Monitoring and Reporting Program. No substantial evidence in the record supporting a fair argument that the Project may result in significant environmental impacts and that any comments received to date regarding the Project have been examined and determined not to modify the conclusions of the MND or the Planning Commission. Furthermore, the MND has not been substantially revised after the public notice of its availability, and recirculation is not required. (State CEQA Guidelines, § 15073.5.) The Planning Commission further finds that the MND contains a complete, objective, and accurate reporting of the environmental impacts associated with the Project and reflects the independent judgment of the Planning Commission. PLANNING COMMISSION RESOLUTION NO. 2814 3 SECTION 4. Adoption of the Mitigated Negative Declaration. The Planning Commission hereby adopts the subsequent MND prepared for the Project. SECTION 5. Adoption of the Mitigation Monitoring and Reporting Program. The Planning Commission hereby adopts the Mitigation Monitoring and Reporting Program prepared for the Project, which is included in the MND. SECTION 6. Approval. The Planning Commission hereby approves and adopts the PP application for the Project. SECTION 7. Approval. The Planning Commission hereby approves and adopts the Project, subject to the Conditions of Approval attached hereto as Exhibit “A.” SECTION 8. Custodian of Records. The documents and materials that constitute the record of proceedings on which these findings are based are at the City’s office at 73510 Fred Waring Drive, Palm Desert, CA 92260. Martin Alvarez, the Secretary to the Palm Desert Planning Commission, is the custodian of the record of proceedings. SECTION 9. Notice of Determination. The Planning Commission directs Staff to file a Notice of Determination with the County of Riverside and the State Clearinghouse within five (5) working days of any Project approval. SECTION 10. Execution of Resolution. The Chairperson of the Planning Commission shall sign this Resolution, and the Secretary to the Commission shall attest and certify the passage and adoption thereof. PASSED, APPROVED, AND ADOPTED by the Planning Commission of the City of Palm Desert, California, at its regular meeting held on the 5th day of July 2022, by the following vote, to wit: AYES: NOES: ABSENT: ABSTAIN: CHAIR ATTEST: MARTIN ALVAREZ, SECRETARY PALM DESERT PLANNING COMMISSION PLANNING COMMISSION RESOLUTION NO. 2814 4 EXHIBIT “A’ CONDITIONS OF APPROVAL CASE NO. PP22-0002 PLANNING DIVISION: 1. The development of the property shall conform substantially with exhibits on file with the Development Services Department, as modified by the following conditions. 2. The Applicant agrees that in the event of any administrative, legal, or equitable action instituted by a third party challenging the validity of any of the procedures leading to the adoption of these project approvals for the project, or the project approvals themselves, the developer and City each shall have the right, in their sole discretion, to elect whether or not to defend such action. The developer, at its sole expense, shall defend, indemnify, and hold harmless the City (including its agents, officers, and employees) from any such action, claim, or proceeding with counsel chosen by the City, subject to the developer’s approval of counsel, which shall not be unreasonably denied, and at the developer’s sole expense. If the City is aware of such an action or proceeding, it shall promptly notify the developer and cooperate in the defense. The developer, upon such notification, shall deposit with City sufficient funds in the judgment of the City Finance Director to cover the expense of defending such action without any offset or claim against said deposit to assure that the City expends no City funds. If both parties elect to defend, the parties hereby agree to affirmatively cooperate in defending said action and to execute a joint defense and confidentiality agreement in order to share and protect the information, under the joint defense privilege recognized under applicable law. As part of the cooperation in defending an action, City and developer shall coordinate their defense in order to make the most efficient use of legal counsel and to share and protect information. The developer and City shall each have sole discretion to terminate its defense at any time. The City shall not settle any third-party litigation of project approvals without the developer’s consent, which consent shall not be unreasonably withheld, conditioned, or delayed unless the developer materially breaches this indemnification requirement. 3. The development of the property described herein shall be subject to the restrictions and limitations set forth herein, which are in addition to the approved development standards listed in the Palm Desert Municipal Code (PDMC), and state and federal statutes now in force, or which hereafter may be in force. 4. The PP shall expire if construction of the said project shall not commence within two years from the date of final approval unless an extension of time is granted by the Palm Desert Planning Commission; otherwise, said approval shall become null, void, and of no effect whatsoever. 5. Per PDMC Section 25.72.030 Precise Plan Amendment to a PP, the Director may approve in writing on the approved PP minor modifications without the benefit of a public hearing when such modifications do not adversely affect the public interest or the interest of owners of neighboring properties or substantially alter the plan and so long as the modification would not affect any other condition of approval. All other changes that do not qualify will result in a new public hearing. PLANNING COMMISSION RESOLUTION NO. 2814 5 6. All construction documentation shall be coordinated for consistency, including, but not limited to, architectural, structural, mechanical, electrical, plumbing, landscape and irrigation, grading, and street improvement plans. All such plans shall be consistent with the approved entitlement plans on file with the Development Services Department. 7. Prior to issuance of a building permit for construction of any use or structure contemplated by this approval, the Applicant shall first obtain permits and or clearance from the following agencies: Coachella Valley Water District (CVWD) Public Works Department Fire Department Evidence of said permit or clearance from the above agencies shall be presented to the Building & Safety Division at the time of issuance of a building permit for the use contemplated herewith. 8. This Project is subject to payment of the City’s Public Art fee. The fee will be applied at the time of a building permit issuance and shall remain in the City’s public art fund. 9. Final lighting plans shall be submitted under PDMC Section 24.16 for any landscape, architectural, street, or other lighting types within the project area. 10. All exterior lighting sources shall be fully shielded and directed downwards and is subject to approval by the City’s Development Services Department. Luminaries with total lamp lumens above 16,000 lumens shall not be used. 11. Access to trash and service areas shall be placed so as not to conflict with parking areas. Said placement shall be approved by the applicable waste company and the Development Services Department and shall include a recycling program. 12. Prior to the approval of a Building Permit by the Development Services Department, final landscape and irrigation documents shall be prepared by a landscape architect registered with the State of California and shall be submitted to the City’s Development Services Department and the Coachella Valley Water District for review and approval. All sheets shall be wet signed by the landscape architect and shall include the license number and the expiration date. The landscape plan shall conform to the preliminary landscape plans prepared as part of this application and shall include dense plantings of landscape material. All plants shall be a minimum of five (5) gallons in size, and all trees shall be a minimum 24-inch box in size. 13. All project irrigation systems shall function properly, and landscaping shall be maintained in a healthy and thriving condition. The maintenance of landscaping and the irrigation system shall be permanently provided for all areas of the project site, as well as walkways and the portion of public right-of-way abutting the project site (parkways). Furthermore, the plans shall identify responsibility for the continued maintenance (such as homeowners’ association (HOA), landscape maintenance district, property owner, etc.). PLANNING COMMISSION RESOLUTION NO. 2814 6 14. All exterior equipment and all appurtenances thereto shall be completely screened from public view by walls or roof screens that are architecturally treated to be consistent with the building. The final construction plans shall include appropriate drawings demonstrating how such equipment is to be screened from view. 15. All roof drainage systems and devices shall be designed such that they are fully screened from view from all public streets. Drainage devices, including but not limited to, down- spouts, shall not be located on any exterior elevation and shall be fully integrated into the building structure. 16. All ground-mounted utility structures including, but not limited to, transformers, HVAC equipment, and backflow prevention valves shall be located out of view from any public street or adequately screened using landscaping and/or masonry walls. 17. The Applicant shall comply with the recommendations made by the City’s ARC, as referenced on the April 22, 2022, Notice of Action for the April 12, 2022, meeting. 18. The Applicant or any successor in interest shall comply with all applicable local, state, and federal laws and regulations. 19. All parking spaces shall be clearly marked with white or yellow paint or other easily distinguished material. Except as required by State and ADA requirements, all markings shall be a minimum four-inch (4”) wide double (“hairpin” style) stripe designed to provide 18 inches measured outside to outside under City Council Resolution No. 01-5. Parallel Spaces and covered spaces are not required to provide double striping. 20. A copy of the herein-listed conditions of approval shall be included in the construction documentation package for the project, which shall be continuously maintained on-site during project construction. 21. The final design of all site walls and fencing shall be subject to review and approval by the City’s Development Services Department, which includes consideration of the easements at the rear of the property. 22. The Applicant shall enter into a Housing Agreement with the City of Palm Desert prior to building permit issuance. The agreement shall be in accordance with provisions related to affordable housing. 23. All mitigation measures identified in the CEQA Environmental Assessment and Initial Study shall be incorporated into the planning, design, development, and operation of the project. LAND DEVELOPMENT DIVISION: 24. The following plans, studies, and exhibits are hereby referenced: Preliminary Grading and Drainage Plan; prepared by The Altum Group; dated January 7, 2021. PLANNING COMMISSION RESOLUTION NO. 2814 7 25. It is assumed that easements shown on the preliminary grading exhibit are shown correctly and include all the easements that encumber the subject property. A current preliminary title report for the site will be required to be submitted. The Applicant shall secure approval from all, if any, easement holders for all grading and improvements that are proposed over the respective easement or provide evidence that the easement has been relocated, quitclaimed, vacated, abandoned, easement holder cannot be found, or is otherwise of no effect. Should such approvals or alternate actions regarding the easements not be provided and approved by the City, the Applicant may be required to amend or revise the proposed site configuration as may be necessary. 26. It is understood that the conceptual exhibits correctly show acceptable centerline elevations, all existing easements, traveled ways, and drainage courses with appropriate Qs, and that the omission or unacceptability may require that the Applicant amend or revise the site plan as may be. 27. All private streets and common areas will be permitted as shown on the conceptual exhibit subject to these Conditions of Approval and the Applicant providing adequate provisions by means of a HOA or another equivalent responsible mechanism as approved by the City Engineer and City Attorney for the continued and perpetual maintenance of these streets, common areas, and on-site post-construction Best Management Practices (BMPs) to the satisfaction of the City Engineer and City Attorney. 28. The Applicant shall pay all appropriate signalization fees in accordance with the City’s Resolution Nos. 79-17 and 79-55. 29. The Applicant shall pay all appropriate drainage fees in accordance with the City’s Municipal Code Section 26.49 and Palm Desert Ordinance No. 653. 30. The Applicant shall comply with Palm Desert Ordinance No. 843, as applicable to this project. 31. Prior to the grading permit, the Applicant shall prepare a final grading plan for the site. No grading or other improvements shall be permitted until a final grading plan has been approved by the City Engineer. Grading plans and all grading shall conform to the approved Conceptual Grading Plan, the California Building Code, the City’s Municipal Code Title 27 Grading, and all other relevant laws, rules, and regulations governing grading in the City of Palm Desert. 32. The grading plan shall provide for acceptance and proper disposal of all off-site drainage flowing onto or through the site. Should the quantities exceed the street capacity, the Applicant shall provide adequate drainage facilities and/or appropriate easements as approved by the City Engineer. 33. The grading plan shall provide protection of downstream properties from damages caused by alteration of the drainage patterns, i.e., concentration or diversion of flow. 34. Pad elevations, as shown on the conceptual exhibit, are subject to review and modification in accordance with Chapter 27 of the PDMC. PLANNING COMMISSION RESOLUTION NO. 2814 8 35. Prior to approval of the grading plan, the Applicant shall prepare a detailed final flood hazard, hydrology, and hydraulics report for approval of the City Engineer. 36. A Preliminary Hydrology Report prepared by The Altum Group, dated January 7, 2022, was reviewed during the Planning application process. The Final report shall address comments provided on March 4, 2022, PP22-0002 Urban Crossings Apartment Complex, Completeness Review letter by Michael Baker International. 37. All drainage and storm drain improvements shall be designed in accordance with the City’s Municipal Code Title 24, Riverside County Flood Control and Water Conservation District’s standards for the Coachella Valley area, the Drainage Element of the Palm Desert General Plan, and all other relevant laws, rules, and regulations governing grading in the city of Palm Desert. 38. Prior to the issuance of a grading permit,the Applicant shall submit a PM10 application for review and approval. The Applicant shall comply with all provisions of the City’s Municipal Code Section 24.12 regarding Fugitive Dust Control. 39. Prior to the issuance of a grading permit,the Applicant shall submit a Storm Water Pollution Prevention Plan (SWPPP) for review and approval of the Land Development Division. 40. Where grading involves import or export, the Applicant shall obtain a permit, from the Public Works Department, including import and export quantities and hauling route. 41. It shall be the sole responsibility of the Applicant to obtain any and all proposed or required easements and/or permissions necessary to perform the grading shown on the tentative grading plan exhibit. Proof shall be provided to the Land Development Department prior to issuance of a grading permit. 42. Prior to a grading permit and if grading is required off-site, the Applicant shall obtain written permission from the property owner(s) to grade as necessary and provide a copy to the Engineering Department. 43. Prior to the issuance of a grading permit, the Applicant shall enter into a maintenance agreement with the City. The agreement shall provide for the maintenance and operation of open space areas, common spaces such as parking lot and recreational facilities, trash disposal for common areas, and water quality BMP facilities by either the property owner's association or the owners of each individual lot or unit as tenants in common. 44. It is assumed that the grading and the provisions for water quality management shown on the conceptual grading exhibit can comply with all requirements for a Final Water Quality Management Plan (F-WQMP), without substantial change from that shown. Prior to approval of the grading plan, the landowner shall prepare, or cause to be prepared, a Final WQMP in conformance with the requirements of the Riverside County Flood Control and Water Conservation District (RCFC&WCD) Whitewater Watershed area for approval of the City Engineer. PLANNING COMMISSION RESOLUTION NO. 2814 9 45. A project specific Conceptual Water Quality Management Plan was submitted for review during the Planning application process. The Final report shall address comments provided on March 4, 2022, PP22-0002 Urban Crossings Apartment Complex, Completeness Review letter by Michael Baker International. 46. All post-construction BMPs shall be designed based on the City of Palm Desert’s maximum infiltration criteria of two (2) inches/hour unless otherwise approved by the City Engineer. 47. Prior to the issuance of a grading permit, the Applicant shall submit plans for review and approval of the City Engineer for all public improvements, including but not limited to, street and roadway improvements, and landscape and irrigation improvements. 48. The Applicant shall construct ADA-compliant depressed curbs and access ramps at site access driveways, which shall be prepared by a registered civil engineer in the state of California. 49. Prior to the issuance of encroachment permit for public improvements, the Applicant shall enter into an agreement and post financial security guarantee for the construction of all off-site/public improvements. The form and amount of the financial security shall be reviewed and approved by the City Engineer. The Applicant shall guarantee all improvements for a period of one year from the date of final acceptance, and the improvement guarantee shall be backed by a bond or cash deposit in the amount of 10 percent (10%) of the surety posted for the improvements. 50. The Applicant shall be responsible for the construction and installation of improvements for Dick Kelly Drive, including but not limited to: A. The Applicant shall construct parkway improvements along site frontage. Including landscape and irrigation improvements adjacent to the existing meandering sidewalk and as approved by the City of Palm Desert Planning Division. B. The Applicant shall be responsible for repairs to damaged curb, gutter, and sidewalk panels along the project frontage, as needed and required by the City Engineer. C. The Applicant shall provide one driveway approach (1) that shall provide the main access to the development. The location and design shall be per the approved conceptual exhibits and the Palm Desert Standard Drawings and Specifications. D. The Applicant shall show, as reference only, all existing and proposed utility connections. Utility plans shall be processed and approved by Coachella Valley Water District (CVWD). 51. Prior to a grading permit, the Applicant shall submit improvement plans for Gateway Drive. The Applicant is responsible for the construction and installation of improvements for Gateway Drive, including but not limited to: A. The Applicant shall construct parkway improvements along site frontage. Including landscape and irrigation improvements adjacent to the existing meandering sidewalk and as approved by the City of Palm Desert Planning Department. PLANNING COMMISSION RESOLUTION NO. 2814 10 B. The Applicant shall be responsible for repairs to damaged curb, gutter, and sidewalk panels along the project frontage, as needed and required by the City Engineer. C. The Applicant shall provide one driveway approach (1) for egress and ingress from/to the development. The location and design shall be per the approved conceptual exhibits and the Palm Desert Standard Drawings and Specifications. D. The Applicant shall submit signing and striping plans. E. The Applicant shall show, as reference only, all existing and proposed utility connections. Utility plans shall be processed and approved by Coachella Valley Water District (CVWD). 52. Prior to a grading permit, the Applicant shall submit improvement plans for Cortesia Way. The Applicant is responsible for the construction and installation of improvements for Cortesia Way, including, but are not limited to: A. The Applicant shall construct parkway improvements along site frontage, including landscape and irrigation improvements adjacent to the existing meandering sidewalk and as approved by the City of Palm Desert Planning Department. B. The Applicant shall be responsible for repairs to damaged curb, gutter, and sidewalk panels along the project frontage, as needed and required by the City Engineer. 53. Prior to the issuance of a grading permit and in compliance with the City of Palm Desert Municipal Code Chapter 27.24, the Applicant shall enter into an agreement and post financial security guarantee in an amount equal to at least 100 percent (100%) of the estimated cost of the grading work. 54. Upon completion of grading, the project Geotechnical Engineer shall certify the completion of rough grading in conformance with the approved grading plans and the recommendations of the geotechnical report approved for this project. A licensed land surveyor shall certify the completion of grading in conformance with the lines and grades shown on the approved grading plans. 55. Prior to a building final inspection, the Applicant is responsible for the completion of construction of all grading and improvements for which plans are required and shall comply with all requirements within public and private road rights-of-way. 56. A project-specific Transportation Analysis titled Crossing at Palm Desert Transportation Analysis, dated June 2022, prepared by Integrated Engineering Group, was submitted for review during the Planning application process. The findings of the report find that peak hour delays at the analyzed intersections don’t warrant operational improvements per Riverside County Traffic Impact Analysis Guidelines. 57. Prior to a grading permit, the Applicant shall submit a signing and striping plan. The Applicant is responsible for the design and installation of signing and striping improvements that provide the following: PLANNING COMMISSION RESOLUTION NO. 2814 11 A. The Applicant shall submit separate signing and striping plans for review and approval of the City Engineer. Developer must provide a full-scale signing and striping plan showing the above requirements and other turning movement requirements mentioned in the referenced Transportation Analysis report. B. Signing and striping plan must show proposed bike lane striping modifications at proposed driveway accesses. C. Signing and striping plan must show all pertinent signing and pavement markings. D. The Applicant shall install a left-turn pocket from westbound traffic on Dick Kelly Drive to the main development access driveway on the southside of Dick Kelly Drive. E. The signing and striping plan shall provide for southbound left-turn movements out of Falling Waters Drive onto Dick Kelly Drive and perpetuate existing unrestricted access. F. The Applicant shall install a left-turn pocket from southbound traffic on Gateway Drive to the development access driveway on the east side of Gateway Drive. G. Both development driveways must have stop signs and stop bars for vehicles exiting the development in any direction. BUILDING AND SAFETY DIVISION: 58. This project shall comply with the latest adopted edition of the following codes: A. California Building Code and its appendices and standards. B. California Residential Code and its appendices and standards B. California Plumbing Code and its appendices and standards. C. California Mechanical Code and its appendices and standards. D. California Electrical Code. E. California Energy Code. F. California Green Building Standards Code G. Title 24, California Code of Regulations. H. California Fire Code and its appendices and standards. 59. This project will fall under the review and compliance of Chapters 11-A and Chapter 11- B of the 2019 California Building Code. 60. The Applicant shall coordinate directly with: Riverside County Fire Marshal’s Office CAL FIRE/Riverside County Fire Department Main: (760) 863-8886 77933 Las Montañas Road, Suite 201 Palm Desert, CA 92211 61. Plan approval must be obtained from the County of Riverside, Department of Environmental Health before constructing or altering structure or equipment (such as fencing and decking). The Applicant shall coordinate directly with the health department for application, plans, and specifications. PLANNING COMMISSION RESOLUTION NO. 2814 12 62. Submit an exit plan that labels and clearly shows compliance with all required egress features such as, but not limited to, common path of travel, the required number of exits and separation, occupant load, required width, continuity, travel distance, elevators, etc. CBC 1001.1. 63. A disabled access overlay of the precise grading plan is required to be submitted to the Building and Safety Division for plan review of the site accessibility requirements as per 2016 CBC Chapters 11A & B (as applicable) and Chapter 10. 64. Provide building height and area analysis to determine compliance with CBC Section 503. Justify any area increases to height and area as permitted per CBC Sections 504 and 506. 65. Provide a complete set of scaled or fully dimension elevations to determine the number of stories for the proposed project. CBC Section 503 (Definition of a Grade Plan, Story, and Story above grade plane). 66. Provide an area analysis on the first sheet of the plans to justify the allowable floor areas for a mixed occupancy building. The sum of the ratios of the actual area for each occupancy divided by the allowable area for each occupancy must not exceed 1.00. For buildings with firewalls, use the floor area of each separate "building" to justify the area. CBC Section 508.4.2 and 706.1. 67. All exits must provide an accessible path of travel to the public way. (CBC 1027.5 & 11B- 206) 68. Detectable warnings shall be provided where required per CBC 11B-705.1.2.5 and 11B705.1.2.2. The designer is also required to meet all ADA requirements. Where an ADA requirement is more restrictive than the State of California, the ADA requirement shall supersede the State requirement. Provide an accessible path of travel to the trash enclosure. The trash enclosure is required to be accessible. Please obtain a detail from the Building and Safety Division. 69. Public pools and spas must be first approved by the Riverside County Department of Environmental Health and then submitted to Building and Safety Division. Pools and Spas for public use are required to be accessible. 70. An approved automatic fire sprinkler system shall be installed as required per the City of Palm Desert Code Adoption Ordinance 1351. 71. All trash enclosures are required to be accessible. Provide an accessible path of travel to the trash enclosure. Trash enclosures shall comply with the minimum requirements established by Chapter 8.12 of the PDMC. 72. All contractors and subcontractors shall have a current City of Palm Desert Business License before permit issuance per PDMC, Title 5. PLANNING COMMISSION RESOLUTION NO. 2814 13 73. All contractors and/or owner-builders must submit a valid Certificate of Workers’ Compensation Insurance coverage before the issuance of a building permit per California Labor Code, Section 3700. 74. Address numerals shall comply with Palm Desert Ordinance No. 1351 (PDMC 15.28. Compliance with Ordinance 1351 regarding street address location, dimension, a stroke of line, distance from the street, height from grade, height from the street, etc., shall be shown on all architectural building elevations in detail. Any possible obstructions, shadows, lighting, landscaping, backgrounds, or other reasons that may render the building address unreadable shall be addressed during the plan review process. The Applicant may request a copy of Ordinance 1351 or Municipal Code Section 15.28 from the Building and Safety Division counter staff. FIRE DEPARTMENT: 75. Fire Hydrants and Fire Flow: Prior to the issuance of building permits, plans for the water system shall be submitted to the Fire Department for review and approval. The water system shall be capable of delivering 1,750 gallons per minute at 20 psi for a two-hour duration. Fire hydrant location and spacing shall comply with the fire code. An approved water supply for fire protection during construction shall be made available before the arrival of combustible materials on site. Reference 2019 California Fire Code (CFC) 507.5.1, 507.5.1, 3312, Appendices B and C. 76. Fire Department Access: Prior to the building permit issuance, a fire access site plan shall be approved. The access roads shall be capable of sustaining 60,000 lbs. over two axels in all-weather conditions. An approved access walkway shall be provided around the buildings. For ground ladder placement, leve4l grade shall be provided around the buildings for a minimum of eight (8) feet measured perpendicular from the exterior building walls. Approved vehicle access, either permanent or temporary, shall be provided during construction. CFC 503.1.1, 331.1 and 503.2.1. 77. Requests for installation of traffic calming designs and devices on fire apparatus roads shall be submitted and approved by the Office of the Fire Marshal. Ref. CFC 503.4.1. 78. Phased Construction Access: If construction is phased, each phase shall provide approved access for fire protection prior to any construction. An additional fire apparatus access road shall be provided to the site for Phase 1. The additional access point may be restricted to fire apparatus access only with approved Knox equipment installed for the gates. Ref. CFC 503.1. 79. Construction Permits: Prior to building permit issuance, building construction plans shall be submitted to the Office of the Fire Marshal for review and approval. Construction plans for solar photovoltaic power systems and electrical energy storage systems (ESS) shall be provided to the Office of the Fire Marshal for review and approval. CFC 1206. 80. Fire Sprinkler System: All new commercial structures 3,000 square feet or larger shall be protected with a fire sprinkler system. All new apartment buildings shall be protected with fire sprinklers regardless of building size. Ref CFC 903.2.8 and CFC 903.2 as amended by the City of Palm Desert. PLANNING COMMISSION RESOLUTION NO. 2814 14 81. Fire sprinkler system risers shall not be obstructed in any manner. If a system riser is to be concealed by means of a wall, soffit, column, or other building construction, it shall be provided with an 18-inch clearance to each side and to the front of the system riser. Access shall be provided by means of a door with the minimum dimensions of two (2) feet six (6) inches in width by six (6) feet eight (8) inches in height from the exterior of the building directly to the riser as approved by the fire code official Ref. RVC Fire IB 06-07. 82. Fire Alarm and Detection System: A water flow monitoring system and/or the fire alarm system may be required and determined at the time of building plan review. Ref. CFC 903.4, CFC 907.2 and NFPA 72. 83. Knox Box and Gate Access: Buildings shall be provided with a Knox Box. The Knox Box shall be installed in an accessible location approved by the Office of the Fire Marshal. Electric gate operators shall be provided with Knox key switches. Electric gate operators shall also be connected to a remote signal receiver compatible for use with the preemption devices on the Riverside County fire apparatus. The gate shall automatically open upon receiving a remote signal from the fire apparatus and remain in the fully open position for a minimum of 30 seconds. Ref. CFC 506.1. 84. Addressing: All residential dwellings and commercial buildings shall display street numbers, building number/letter designators, and unit designators in a prominent location on the street side of the premises and additional locations as required. The premises shall have an illuminated diagrammatic representation of the actual site layout, which shows the name of the complex, all streets, building designators, unit numbers, and fire hydrant locations within the complex. These directories shall be a minimum of 4' x 4' in dimension and located next to roadway access. Ref. CFC 505.1 and County of Riverside Office of the Fire Marshal Standard #07-01. 85. Energy Systems: Construction plans for solar photovoltaic power systems and electrical energy storage systems (ESS) shall be provided to the Office of the Fire Marshal for review and approval. CFC 1206. END OF CONDITIONS OF APPROVAL Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Prepared for: Lauren Reese The Altum Group 72140 Magnesia Falls, Suite 1 Rancho Mirage, CA 92270 Prepared by: MD Acoustics, LLC Mike Dickerson, INCE; Tyler Klassen, EIT 1197 Los Angeles Ave, Ste C-256 Simi Valley, CA 93065 Date: 3/10/2022 Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA TABLE OF CONTENTS MD Acoustics, LLC ii JN: 07412145_Report TABLE OF CONTENTS 1.0 Introduction .......................................................................................................................... 1 1.1 Purpose of Analysis and Study Objectives 1 1.2 Project Summary 1 1.2.1 Site Location 1 1.2.2 Project Description 1 1.2.3 Sensitive Receptors 2 1.3 Executive Summary of Findings and Mitigation Measures 2 2.0 Regulatory Framework and Background ................................................................................. 6 2.1 Air Quality Regulatory Setting 6 2.1.1 National and State 6 2.1.2 South Coast Air Quality Management District 8 2.1.3 Local 10 2.2 Greenhouse Gas Regulatory Setting 14 2.2.1 International 14 2.2.2 National 14 2.2.3 California 16 2.2.4 South Coast Air Quality Management District 24 2.2.5 Local 25 3.0 Setting ................................................................................................................................. 27 3.1 Existing Physical Setting 27 3.1.1 Local Climate and Meteorology 27 3.1.2 Local Air Quality 28 3.1.3 Attainment Status 30 3.2 Greenhouse Gases 32 4.0 Modeling Parameters and Assumptions ............................................................................... 34 4.1 Construction 34 4.2 Operations 35 4.3 Localized Construction Analysis 35 4.4 Localized Operational Analysis 36 5.0 Thresholds of Significance .................................................................................................... 37 5.1 Air Quality Thresholds of Significance 37 5.1.1 CEQA Guidelines for Air Quality 37 5.1.2 Regional Significance Thresholds for Construction Emissions 37 5.1.3 Regional Significance Thresholds for Operational Emissions 38 5.1.4 Thresholds for Localized Significance 38 5.2 Greenhouse Gas Thresholds of Significance 38 5.2.1 CEQA Guidelines for Greenhouse Gas 38 5.3 Toxic Air Contaminants 39 6.0 Air Quality Emissions Impact ................................................................................................ 40 Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA TABLE OF CONTENTS MD Acoustics, LLC iii JN: 07412145_Report 6.1 Construction Air Quality Emissions Impact 40 6.1.1 Regional Construction Emissions 40 6.1.2 Localized Construction Emissions 41 6.1.3 Construction-Related Human Health Impacts 41 6.1.4 Odors 41 6.1.5 Construction-Related Toxic Air Contaminant Impact 42 6.2 Operational Air Quality Emissions Impact 42 6.2.1 Regional Operational Emissions 42 6.2.2 Localized Operational Emissions 43 6.2.3 Operations-Related Human Health Impacts 44 6.3 CO Hot Spot Emissions 44 6.4 Cumulative Regional Air Quality Impacts 45 6.5 Air Quality Compliance 45 7.0 Greenhouse Gas Impact Analysis .......................................................................................... 48 7.1 Construction Greenhouse Gas Emissions Impact 48 7.2 Operational Greenhouse Gas Emissions Impact 48 7.3 Greenhouse Gas Plan Consistency 49 8.0 Energy Analysis .................................................................................................................... 51 8.1 Construction Energy Demand 51 8.1.1 Construction Equipment Electricity Usage Estimates 51 8.1.2 Construction Equipment Fuel Estimates 52 8.1.3 Construction Worker Fuel Estimates 53 8.1.4 Construction Vendor/Hauling Fuel Estimates 53 8.1.5 Construction Energy Efficiency/Conservation Measures 54 8.2 Operational Energy Demand 55 8.2.1 Transportation Fuel Consumption 55 8.2.2 Facility Energy Demands (Electricity and Natural Gas) 56 8.3 Renewable Energy and Energy Efficiency Plan Consistency 57 9.0 References ........................................................................................................................... 58 Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA TABLE OF CONTENTS MD Acoustics, LLC iv JN: 07412145_Report LIST OF APPENDICES Appendix A: CalEEMod Daily Emission Output Appendix B: CalEEMod Annual Emission Output Appendix C: EMFAC2017 Output LIST OF EXHIBITS Exhibit A ........................................................................................................................................... 4 Location Map 4 Exhibit B ........................................................................................................................................... 5 Site Plan 5 LIST OF TABLES Table 1: Land Use Summary ........................................................................................................................ 1 Table 2: Ambient Air Quality Standards ..................................................................................................... 7 Table 3: Meteorological Summary ............................................................................................................ 28 Table 4: Local Area Air Quality Levels from Palm Springs Air Monitoring Station1 .................................. 29 Table 5: Coachella Valley Portion of the Salton Sea Air Basin Attainment Status ................................... 31 Table 6: Description of Greenhouse Gases ............................................................................................... 33 Table 7: Construction Equipment Assumptions1 ...................................................................................... 36 Table 8: Regional Significance - Construction Emissions (pounds/day) ................................................... 40 Table 9: Localized Significance – Construction ......................................................................................... 41 Table 10: Regional Significance - Unmitigated Operational Emissions (lbs/day) ..................................... 43 Table 11: Localized Significance – Unmitigated Operational Emissions ................................................... 43 Table 12: Construction Greenhouse Gas Emissions ................................................................................. 48 Table 13: Opening Year Unmitigated Project-Related Greenhouse Gas Emissions ................................. 49 Table 14: Project Construction Power Cost and Electricity Usage ........................................................... 51 Table 15: Construction Equipment Fuel Consumption Estimates ............................................................ 52 Table 16: Construction Worker Fuel Consumption Estimates ................................................................. 53 Table 17: Construction Vendor Fuel Consumption Estimates (MHD Trucks)1 ......................................... 54 Table 18: Construction Hauling Fuel Consumption Estimates (HHD Trucks)1 .......................................... 54 Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA TABLE OF CONTENTS MD Acoustics, LLC v JN: 07412145_Report Table 19: Estimated Vehicle Operations Fuel Consumption .................................................................... 56 Table 20: Project Unmitigated Annual Operational Energy Demand Summary1 ..................................... 56 Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA TABLE OF CONTENTS MD Acoustics, LLC vi JN: 07412145_Report GLOSSARY OF TERMS AQMP Air Quality Management Plan CAAQS California Ambient Air Quality Standards CARB California Air Resources Board CEQA California Environmental Quality Act CFCs Chlorofluorocarbons CH4 Methane CNG Compressed natural gas CO Carbon monoxide CO2 Carbon dioxide CO2e Carbon dioxide equivalent DPM Diesel particulate matter GHG Greenhouse gas HFCs Hydrofluorocarbons LST Localized Significant Thresholds MTCO2e Metric tons of carbon dioxide equivalent MMTCO2e Million metric tons of carbon dioxide equivalent NAAQS National Ambient Air Quality Standards NOx Nitrogen Oxides NO2 Nitrogen dioxide N2O Nitrous oxide O3 Ozone PFCs Perfluorocarbons PM Particle matter PM10 Particles that are less than 10 micrometers in diameter PM2.5 Particles that are less than 2.5 micrometers in diameter PMI Point of maximum impact PPM Parts per million PPB Parts per billion RTIP Regional Transportation Improvement Plan RTP Regional Transportation Plan SCAQMD South Coast Air Quality Management District SF6 Sulfur hexafluoride SIP State Implementation Plan SOx Sulfur Oxides SRA Source/Receptor Area SSAB Salton Sea Air Basin TAC Toxic air contaminants VOC Volatile organic compounds WRCC Western Regional Climate Center Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Introduction 1 1.0 Introduction 1.1 Purpose of Analysis and Study Objectives This air quality and greenhouse gas (GHG) analysis was prepared to evaluate whether the estimated criteria pollutants and GHG emissions generated from the project would cause a significant impact to the air resources in the project area. This assessment was conducted within the context of the California Environmental Quality Act (CEQA, California Public Resources Code Sections 21000, et seq.). The assessment is consistent with the methodology and emission factors endorsed by South Coast Air Quality Management District (SCAQMD), California Air Resource Board (CARB), and the United States Environmental Protection Agency (US EPA). 1.2 Project Summary 1.2.1 Site Location The project site is located on the southeast corner of Dick Kelly Drive and Gateway Drive in Palm Desert, California, as shown in Exhibit A. The site is currently zoned as Planned Residential use in the City of Palm Desert Zoning Map. The Project is bordered by Dick Kelly Drive to the north with residential uses further north, Cortesia Way to the east with residential uses further east, Gateway Drive to the west with vacant Planned Residential land further west, and vacant Public land to south. 1.2.2 Project Description The Project proposes the construction of a two- and three-story apartment complex with approximately 176 single-family residences on an approximately 3 acres. Exhibit B demonstrates the site plan for the project. Construction activities within the Project area will consist of site preparation, grading, building, paving, and architectural coating. Table 1 summarizes the land use description for the Project Site. Table 1: Land Use Summary Land Use Unit Amount Size Metric Other Asphalt Surfaces 0.40 Acre Other Non-Asphalt Surfaces1 1.00 Acre Parking Lot 330 Space Apartments Mid Rise2 176 Units Landscaping 0.75 Acre 1 Street paving approx. one third of total 3-acre site. 2 Units cover approx. 1 acre. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Introduction 2 1.2.3 Sensitive Receptors Sensitive receptors are considered land uses or other types of population groups that are more sensitive to air pollution than others due to their exposure. Sensitive population groups include children, the elderly, the acutely and chronically ill, and those with cardio-respiratory diseases. For CEQA purposes, a sensitive receptor would be a location where a sensitive individual could remain for 24-hours or longer, such as residences, hospitals, and schools (etc.). The closest existing sensitive receptors (to the site area) are single-family residences 105 feet to the east of the project boundary. 1.3 Executive Summary of Findings and Mitigation Measures The following is a summary of the analysis results: Construction-Source Emissions Project construction-source emissions would not exceed applicable regional thresholds of significance established by the SCAQMD. For localized emissions, the project will not exceed applicable Localized Significance Thresholds (LSTs) established by the SCAQMD. Project construction-source emissions would not conflict with the Basin Air Quality Management Plan (AQMP). As discussed herein, the project will comply with all applicable SCAQMD construction-source emission reduction rules and guidelines. Project construction source emissions would not cause or substantively contribute to violation of the California Ambient Air Quality Standards (CAAQS) or National Ambient Air Quality Standards (NAAQS). Established requirements addressing construction equipment operations, and construction material use, storage, and disposal requirements act to minimize odor impacts that may result from construction activities. Moreover, construction-source odor emissions would be temporary, short- term, and intermittent in nature and would not result in persistent impacts that would affect substantial numbers of people. Potential construction-source odor impacts are therefore considered less-than-significant. Operational-Source Emissions The project operational-sourced emissions would not exceed applicable regional thresholds of significance established by the SCAQMD. Project operational-source emissions would not result in or cause a significant localized air quality impact as discussed in the Operations-Related Local Air Quality Impacts section of this report. Additionally, project-related traffic will not cause or result in CO concentrations exceeding applicable state and/or federal standards (CO “hotspots). Project operational-source emissions would therefore not adversely affect sensitive receptors within the vicinity of the project. Project operational-source emissions would not conflict with the Basin Air Quality Management Plan (AQMP). The project's emissions meet SCAQMD regional thresholds and will not result in a significant cumulative impact. The project does not propose any such uses or activities that would result in Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Introduction 3 potentially significant operational-source odor impacts. Potential operational-source odor impacts are therefore considered less-than significant. Project-related greenhouse gas emissions meet the County of Riverside Climate Action Plan (CAP) Update screening threshold of 3,000 metric tons of carbon dioxide equivalents (MTCO2e) per year and are also considered to be less than significant. The project also complies with the goals of the California Air Resources Board (CARB) Scoping Plan, Assembly Bill 32 (AB-32), and Senate Bill 32 (SB-32). Mitigation Measures A. Construction Measures No construction mitigation required. B. Operational Measures to Reduce Greenhouse Gas Emissions No operational mitigation required. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA SITE Monterey AveGerald Ford Dr Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 6 2.0 Regulatory Framework and Background 2.1 Air Quality Regulatory Setting Air pollutants are regulated at the national, state, and air basin level; each agency has a different level of regulatory responsibility. The United States Environmental Protection Agency (EPA) regulates at the national level. The California Air Resources Board (ARB) regulates at the state level. The South Coast Air Quality Management District (SCAQMD) regulates at the air basin level. 2.1.1 National and State The EPA is responsible for global, international, and interstate air pollution issues and policies. The EPA sets national vehicle and stationary source emission standards, oversees approval of all State Implementation Plans, provides research and guidance for air pollution programs, and sets National Ambient Air Quality Standards (NAAQS), also known as federal standards. There are six common air pollutants, called criteria pollutants, which were identified from the provisions of the Clean Air Act of 1970. x Ozone x Nitrogen Dioxide x Particulate Matter (PM10 and PM2.5) x Carbon Monoxide x Particulate Matter x Sulfur Dioxide The federal standards were set to protect public health, including that of sensitive individuals; thus, the standards continue to change as more medical research is available regarding the health effects of the criteria pollutants. Primary federal standards are the levels of air quality necessary, with an adequate margin of safety, to project the public health. A State Implementation Plan is a document prepared by each state describing existing air quality conditions and measures that will be followed to attain and maintain federal standards. The State Implementation Plan for the State of California is administered by the ARB, which has overall responsibility for statewide air quality maintenance and air pollution prevention. California’s State Implementation Plan incorporates individual federal attainment plans for regional air districts—air district prepares their federal attainment plan, which sent to ARB to be approved and incorporated into the California State Implementation Plan. Federal attainment plans include the technical foundation for understanding air quality (e.g., emission inventories and air quality monitoring), control measures and strategies, and enforcement mechanisms. See http://www.arb.ca.gov/research/aaqs/aaqs.htm for additional information on criteria pollutants and air quality standards. The federal and state ambient air quality standards are summarized in Table 2 and can also be found at http://www.arb.ca.gov/research/aaqs/aaqs2.pdf. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 7 Table 2: Ambient Air Quality Standards Pollutant Averaging Time California Standards1 National Standards2 Concentrations3 Method4 Primary3,5 Secondary3,6 Method7 Ozone (O3) 1-Hour 0.09 ppm Ultraviolet Photometry - - Same as Primary Standard Ultraviolet Photometry 8-Hour 0.070 ppm 0.070 ppm (147 μg/m3) Respirable Particulate Matter (PM10)8 24-Hour 50 μg/m3 Gravimetric or Beta Attenuation 150 μ/m3 Same as Primary Standard Inertial Separation and Gravimetric Analysis Annual Arithmetic Mean 20 μg/m3 - - Fine Particulate Matter (PM2.5)8 24-Hour - - - - 35 μg/m3 Same as Primary Standard Inertial Separation and Gravimetric Analysis Annual Arithmetic Mean 12 μg/m3 Gravimetric or Beta Attenuation 12 μg/m3 15 μg/m3 Carbon Monoxide (CO) 1-Hour 20 ppm (23 μg/m3) Non-Dispersive Infrared Photometry (NDIR) 35 ppm (40 μg/m3) - - Non-Dispersive Infrared Photometry (NDIR) 8-Hour 9.0 ppm (10 μg/m3) 9 ppm (10 μg/m3) - - 8-Hour (Lake Tahoe) 6 ppm (7 μg/m3) - - - - Nitrogen Dioxide (NO2)9 1-Hour 0.18 ppm (339 μg/m3) Gas Phase Chemiluminescence 100 ppb (188 μg/m3) - - Gas Phase Chemiluminescence Annual Arithmetic Mean 0.030 ppm (357 μg/m3) 0.053 ppm (100 μg/m3) Same as Primary Standard Sulfur Dioxide (SO2)10 1-Hour 0.25 ppm (655 μg/m3) Ultraviolet Fluorescence 75 ppb (196 μg/m3) - - Ultraviolet Fluorescence; Spectrophotometry (Pararosaniline Method) 3-Hour - - - - 0.5 ppm (1300 mg/m3) 24-Hour 0.04 ppm (105 μg/m3) 0.14 ppm (for certain areas)10 - - Annual Arithmetic Mean - - 0.130ppm (for certain areas)10 - - Lead11,12 30 Day Average 1.5 μg/m3 Atomic Absorption - - Calendar Qrtr - - 1.5 μg/m3 (for certain areas)12 Same as Primary Standard High Volume Sampler and Atomic Absorption Rolling 3-Month Average - - 0.15 μg/m3 Visibility Reducing Particles13 8-Hour See footnote 13 Beta Attenuation and Transmittance through Filter Tape No National Standards Sulfates 24-Hour 25 μg/m3 Ion Chromatography Hydrogen Sulfide 1-Hour 0.03 ppm (42 μg/m3) Ultraviolet Fluorescence Vinyl Chloride11 24-Hour 0.01 ppm (26 μg/m3) Gas Chromatography Source: CARB 2016. Notes: 1. California standards for ozone, carbon monoxide (except 8-hour Lake Tahoe), sulfur dioxide (1 and 24 hour), nitrogen dioxide, and particulate matter (PM10, PM2.5, and visibility reducing particles), are values that are not to be exceeded. All others are not to be equaled or exceeded. California ambient air quality standards are listed in the Table of Standards in Section 70200 of Title 17 of the California Code of Regulations. 2. National standards (other than ozone, particulate matter, and those based on annual arithmetic mean) are not to be exceeded more than once a year. The ozone standard is attained when the fourth highest 8-hour concentration measured at each site in a year, averaged over three years, is equal to or less than the standard. For PM10, the 24-hour standard is attained when the expected number of days per calendar year with a 24-hour average concentration above 150 μg/m3 is equal to or less than one. For PM2.5, the 24-hour standard is attained when 98 percent of the daily concentrations, averaged over three years, are equal to or less than the standard. Contact the U.S. EPA for further clarification and current national policies. 3. Concentration expressed first in units in which it was promulgated. Equivalent units given in parentheses are based upon a reference temperature of 25°C and a reference pressure of 760 torr. Most measurements of air quality are to be corrected to a reference temperature of 25°C and a reference pressure of 760 torr; ppm in this table refers to ppm by volume, or micromoles of pollutant per mole of gas. 4. Any equivalent measurement method which can be shown to the satisfaction of the ARB to give equivalent results at or near the level of the air quality standard may be used. 5. National Primary Standards: The levels of air quality necessary, with an adequate margin of safety to protect the public health. 6. National Secondary Standards: The levels of air quality necessary to protect the public welfare from any known or anticipated adverse effects of a pollutant. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 8 7. Reference method as described by the U.S. EPA. An “equivalent method” of measurement may be used but must have a “consistent relationship to the reference method” and must be approved by the U.S. EPA. 8. On December 14, 2012, the national annual PM2.5 primary standard was lowered from 15 μg/m3 to 12.0 μg/m3. The existing national 24-hour PM2.5 standards (primary and secondary) were retained at 35 μg/m3, as was the annual secondary standard of 15 μg/m3. The existing 24-hour PM10 standards (primary and secondary) of 150 μg/m3 also were retained. The form of the annual primary and secondary standards is the annual mean, averaged over 3 years. 9. To attain the 1-hour national standard, the 3-year average of the annual 98th percentile of the 1-hour daily maximum concentrations at each site must not exceed 100 ppb. Note that the national 1-hour standard is in units of parts per billion (ppb). California standards are in units of parts per million (ppm). To directly compare the national 1-hour standard to the California standards the units can be converted from ppb to ppm. In this case, the national standard of 100 ppb is identical to 0.100 ppm. 10. On June 2, 2010, a new 1-hour SO2 standard was established and the existing 24-hour and annual primary standards were revoked. To attain the 1- hour national standard, the 3-year average of the annual 99th percentile of the 1-hour daily maximum concentrations at each site must not exceed 75 ppb. The 1971 SO2 national standards (24-hour and annual) remain in effect until one year after an area is designated for the 2010 standard, except that in areas designated nonattainment for the 1971 standards, the 1971 standards remain in effect until implementation plans to attain or maintain the 2010 standards are approved. Note that the 1-hour national standard is in units of parts per billion (ppb). California standards are in units of parts per million (ppm). To directly compare the 1-hour national standard to the California standard the units can be converted to ppm. In this case, the national standard of 75 ppb is identical to 0.075 ppm. 11. The ARB has identified lead and vinyl chloride as 'toxic air contaminants' with no threshold level of exposure for adverse health effects determined. These actions allow for the implementation of control measures at levels below the ambient concentrations specified for these pollutants. 12. The national standard for lead was revised on October 15, 2008, to a rolling 3-month average. The 1978 lead standard (1.5 μg/m3 as a quarterly average) remains in effect until one year after an area is designated for the 2008 standard, except that in areas designated nonattainment for the 1978 standard, the 1978 standard remains in effect until implementation plans to attain or maintain the 2008 standard are approved. 13. In 1989, the ARB converted both the general statewide 10-mile visibility standard and the Lake Tahoe 30-mile visibility standard to instrumental equivalents, which are "extinction of 0.23 per kilometer" and "extinction of 0.07 per kilometer" for the statewide and Lake Tahoe Air Basin standards, respectively. Several pollutants listed in Table 2 are not addressed in this analysis. Analysis of lead is not included in this report because the project is not anticipated to emit lead. Visibility-reducing particles are not explicitly addressed in this analysis because particulate matter is addressed. The project is not expected to generate or be exposed to vinyl chloride because proposed project uses do not utilize the chemical processes that create this pollutant and there are no such uses in the project vicinity. The proposed project is not expected to cause exposure to hydrogen sulfide because it would not generate hydrogen sulfide in any substantial quantity. 2.1.2 South Coast Air Quality Management District The agency for air pollution control for the Salton Sea Air Basin (basin) is the South Coast Air Quality Management District (SCAQMD). SCAQMD is responsible for controlling emissions primarily from stationary sources. SCAQMD maintains air quality monitoring stations throughout the basin. SCAQMD, in coordination with the Southern California Association of Governments, is also responsible for developing, updating, and implementing the Air Quality Management Plan (AQMP) for the basin. An AQMP is a plan prepared and implemented by an air pollution district for a county or region designated as nonattainment of the federal and/or California ambient air quality standards. The term nonattainment area is used to refer to an air basin where one or more ambient air quality standards are exceeded. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 9 Every three (3) years the SCAQMD prepares a new AQMP, updating the previous plan and having a 20- year horizon. On March 23, 2017, CARB approved the 2016 AQMP. The 2016 AQMP is a regional blueprint for achieving the federal air quality standards and healthful air. The 2016 AQMP includes both stationary and mobile source strategies to ensure that rapidly approaching attainment deadlines are met, that public health is protected to the maximum extent feasible, and that the region is not faced with burdensome sanctions if the Plan is not approved or if the NAAQS are not met on time. As with every AQMP, a comprehensive analysis of emissions, meteorology, atmospheric chemistry, regional growth projections, and the impact of existing control measures is updated with the latest data and methods. The most significant air quality challenge in the Basin is to reduce nitrogen oxide (NOx) emissions sufficiently to meet the upcoming ozone standard deadlines. The primary goal of the 2016 AQMP is to meet clean air standards and protect public health, including ensuring benefits to environmental justice and disadvantaged communities. Now that the plan has been approved by CARB, it has been forwarded to the U.S. Environmental Protection Agency for its review. If approved by EPA, the plan becomes federally enforceable. South Coast AQMD has initiated the development of the 2022 AQMP to address the attainment of the 2015 8-hour ozone standard (0.070 parts per million) for South Coast Air Basin and Coachella Valley. To support the development of mobile source strategies for the 2022 AQMP, South Coast AQMD, in conjunction with California Air Resources Board, has established Mobile Source Working Groups which are open to all interested parties. South Coast Air Quality Management District Rules The AQMP for the basin establishes a program of rules and regulations administered by SCAQMD to obtain attainment of the state and federal standards. Some of the rules and regulations that apply to this Project include, but are not limited to, the following: SCAQMD Rule 402 prohibits a person from discharging from any source whatsoever such quantities of air contaminants or other material which cause injury, detriment, nuisance, or annoyance to any considerable number of persons or to the public, or which endanger the comfort, repose, health, or safety of any such persons or the public, or which cause, or have a natural tendency to cause, injury or damage to business or property. SCAQMD Rule 403 governs emissions of fugitive dust during construction and operation activities. Compliance with this rule is achieved through application of standard Best Management Practices, such as application of water or chemical stabilizers to disturbed soils, covering haul vehicles, restricting vehicle speeds on unpaved roads to 15 miles per hour (mph), sweeping loose dirt from paved site access roadways, cessation of construction activity when winds exceed 25 mph, and establishing a permanent ground cover on finished sites. Rule 403 requires that fugitive dust be controlled with best available control measures so that the presence of such dust does not remain visible in the atmosphere beyond the property line of the Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 10 emission source. In addition, Rule 403 requires implementation of dust suppression techniques to prevent fugitive dust from creating a nuisance off site. Applicable suppression techniques are indicated below and include but are not limited to the following: x Apply nontoxic chemical soil stabilizers according to manufacturers’ specifications to all inactive construction areas (previously graded areas in active for 10 days or more). x Water active sites at least three times daily. x Cover all trucks hauling dirt, sand, soil, or other loose materials, or maintain at least 2 feet of freeboard in accordance with the requirements of California Vehicle Code (CVC) section 23114. x Pave construction access roads at least 100 feet onto the site from the main road. x Reduce traffic speeds on all unpaved roads to 15 mph or less. x Suspension of all grading activities when wind speeds (including instantaneous wind gusts) exceed 25 mph. x Bumper strips or similar best management practices shall be provided where vehicles enter and exit the construction site onto paved roads or wash off trucks and any equipment leaving the site each trip. x Replanting disturbed areas as soon as practical. x During all construction activities, construction contractors shall sweep on-site and off-site streets if silt is carried to adjacent public thoroughfares, to reduce the amount of particulate matter on public streets. SCAQMD Rule 1113 governs the sale, use, and manufacturing of architectural coating and limits the VOC content in paints and paint solvents. This rule regulates the VOC content of paints available during construction. Therefore, all paints and solvents used during construction and operation of project must comply with Rule 1113. Idling Diesel Vehicle Trucks – Idling for more than 5 minutes in any one location is prohibited within California borders. Rule 2702. The SCAQMD adopted Rule 2702 on February 6, 2009, which establishes a voluntary air quality investment program from which SCAQMD can collect funds from parties that desire certified GHG emission reductions, pool those funds, and use them to purchase or fund GHG emission reduction projects within two years, unless extended by the Governing Board. Priority will be given to projects that result in co-benefit emission reductions of GHG emissions and criteria or toxic air pollutants within environmental justice areas. Further, this voluntary program may compete with the cap-and-trade program identified for implementation in CARB’s Scoping Plan, or a Federal cap and trade program. 2.1.3 Local Local jurisdictions, such as the County of Riverside and City of Palm Desert, have the authority and responsibility to reduce air pollution through their police power and decision-making authority. Specifically, the County and City are responsible for the assessment and mitigation of air emissions resulting from its land use decisions. The County and City are also responsible for the implementation of transportation control measures as outlined in the 2016 AQMP. Examples of such measures include Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 11 bus turnouts, energy-efficient streetlights, and synchronized traffic signals. In accordance with CEQA requirements and the CEQA review process, the County and City assesses the air quality impacts of new development projects, requires mitigation of potentially significant air quality impacts by conditioning discretionary permits, and monitors and enforces implementation of such mitigation. The County relies on the expertise of the SCAQMD and utilizes the SCAQMD CEQA Air Quality Handbook as the guidance document for the environmental review of plans and development proposals within its jurisdiction. County of Riverside General Plan The Air Quality Element of the County of Riverside General Plan summarizes air quality issues in the Basin, air quality-related plans and programs administered by federal, state, and special purpose agencies, and establishes goals and policies to improve air quality. These goals and policies in the Air Quality Element that relate to the proposed project include: Multi-jurisdictional Cooperation: AQ 1.1 Promote and participate with regional and local agencies, both public and private, to protect and improve air quality. AQ 1.2 Support the Southern California Association of Government's (SCAG) Regional Growth Management Plan by developing intergovernmental agreements with appropriate governmental entities such as the Western Riverside Council of Governments (WRCOG), the Coachella Valley Association of Governments (CVAG), sanitation districts, water districts, and those subregional entities identified in the Regional Growth Management Plan. AQ 1.3 Participate in the development and update of those regional air quality management plans required under federal and state law, and meet all standards established for clean air in these plans. AQ 1.4 Coordinate with the SCAQMD and MDAQMD to ensure that all elements of air quality plans regarding reduction of air pollutant emissions are being enforced. AQ 1.5 Establish and implement air quality, land use and circulation measures that improve not only the County's environment but the entire regions. AQ 1.6 Establish a level playing field by working with local jurisdictions to simultaneously adopt policies like those in this Air Quality Element. AQ 1.7 Support legislation which promotes cleaner industry, clean fuel vehicles and more efficient burning engines and fuels. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 12 AQ 1.8 Support the introduction of federal, state, or regional enabling legislation to permit the County to promote inventive air quality programs, which otherwise could not be implemented. AQ 1.9 Encourage, publicly recognize and reward innovative approaches that improve air quality. AQ 1.10 Work with regional and local agencies to evaluate the feasibility of implementing a system of charges (e.g., pollution charges, user fees, congestion pricing and toll roads) that requires individuals who undertake polluting activities to bear the economic cost of their actions where possible. AQ 1.11 Involve environmental groups, the business community, special interests, and the public in the formulation and implementation of programs that effectively reduce airborne pollutants. Sensitive Receptors: AQ 2.1 The County land use planning efforts shall assure that sensitive receptors are separated and protected from polluting point sources to the greatest extent possible. AQ 2.2 Require site plan designs to protect people and land uses sensitive to air pollution using barriers and/or distance from emissions sources when possible. AQ 2.3 Encourage the use of pollution control measures such as landscaping, vegetation, and other materials, which trap particulate matter or control pollution. Stationary Pollution Sources: AQ 4.1 Encourage the use of building materials/methods which reduce emissions. AQ 4.2 Require the use of all feasible efficient heating equipment and other appliances, such as water heaters, swimming pool heaters, cooking equipment, refrigerators, furnaces, and boiler units. AQ 4.3 Require centrally heated facilities to utilize automated time clocks or occupant sensors to control heating where feasible. AQ 4.5 Require stationary pollution sources to minimize the release of toxic pollutants through: x Design features; x Operating procedures; x Preventive maintenance; x Operator training; and x Emergency response planning Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 13 AQ 4.6 Require stationary air pollution sources to comply with applicable air district rules and control measures. AQ 4.7 To the greatest extent possible, require every project to mitigate any of its anticipated emissions which exceed allowable emissions as established by the SCAQMD, MDAQMD, SOCAB, the Environmental Protection Agency and the California Air Resources Board. AQ 4.8 Expand, as appropriate, measures contained in the County's Fugitive Dust Reduction Program for the Coachella Valley to the entire County. AQ 4.9 Require compliance with SCAQMD Rules 403 and 403.1 and support appropriate future measures to reduce fugitive dust emanating from construction sites. AQ 4.10 Coordinate with the SCAQMD and MDAQMD to create a communications plan to alert those conducting grading operations in the County of first, second, and third stage smog alerts, and when wind speeds exceed 25 miles per hour. During these instances all grading operations should be suspended. Energy Efficiency and Conservation: AQ 5.1 Utilize source reduction, recycling, and other appropriate measures to reduce the amount of solid waste disposed of in landfills. AQ 5.4 Encourage the incorporation of energy-efficient design elements, including appropriate site orientation and the use of shade and windbreak trees to reduce fuel consumption for heating and cooling. Particulate Matter: AQ 15.1 Identify and monitor sources, enforce existing regulations, and promote stronger controls to reduce particulate matter. Multi-jurisdictional Cooperation: AQ 16.1 Cooperate with local, regional, state, and federal jurisdictions to better control particulate matter. Control Measures: AQ 17.1 Reduce particulate matter from agriculture, construction, demolition, debris hauling, street cleaning, utility maintenance, railroad rights-of-way, and off-road vehicles to the extent possible. AQ 17.3 Identify and create a control plan for areas within the County prone to wind erosion of soil. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 14 AQ 17.4 Adopt incentives, regulations and/or procedures to manage paved and unpaved roads and parking lots so they produce the minimum practicable level of particulates. AQ 17.5 Adopt incentives and/or procedures to limit dust from agricultural lands and operations, where applicable. AQ 17.6 Reduce emissions from building materials and methods that generate excessive pollutants, through incentives and/or regulations. 2.2 Greenhouse Gas Regulatory Setting 2.2.1 International Many countries around the globe have made an effort to reduce GHGs since climate change is a global issue. Intergovernmental Panel on Climate Change. In 1988, the United Nations and the World Meteorological Organization established the Intergovernmental Panel on Climate Change to assess the scientific, technical and socio-economic information relevant to understanding the scientific basis of risk of human-induced climate change, its potential impacts, and options for adaptation and mitigation. United Nations. The United States participates in the United Nations Framework Convention on Climate Change (UNFCCC) (signed on March 21, 1994). Under the Convention, governments gather and share information on greenhouse gas emissions, national policies, and best practices; launch national strategies for addressing greenhouse gas emissions and adapting to expected impacts, including the provision of financial and technological support to developing countries; and cooperate in preparing for adaptation to the impacts of climate change. The 2014 UN Climate Change Conference in Lima Peru provided a unique opportunity to engage all countries to assess how developed countries are implementing actions to reduce emissions. Kyoto Protocol. The Kyoto Protocol is a treaty made under the UNFCCC and was the first international agreement to regulate GHG emissions. It has been estimated that if the commitments outlined in the Kyoto Protocol are met, global GHG emissions could be reduced by an estimated 5 percent from 1990 levels during the first commitment period of 2008 – 2012 (UNFCCC 1997). On December 8, 2012, the Doha Amendment to the Kyoto Protocol was adopted. The amendment includes: New commitments for Annex I Parties to the Kyoto Protocol who agreed to take on commitments in a second commitment period from 2013 – 2020; a revised list of greenhouse gases (GHG) to be reported on by Parties in the second commitment period; and Amendments to several articles of the Kyoto Protocol which specifically referenced issues pertaining to the first commitment period and which needed to be updated for the second commitment period. 2.2.2 National Greenhouse Gas Endangerment. On December 2, 2009, the EPA announced that GHGs threaten the public health and welfare of the American people. The EPA also states that GHG emissions from on- Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 15 road vehicles contribute to that threat. The decision was based on Massachusetts v. EPA (Supreme Court Case 05-1120) which argued that GHGs are air pollutants covered by the Clean Air Act and that the EPA has authority to regulate those emissions. Clean Vehicles. Congress first passed the Corporate Average Fuel Economy (CAFE) law in 1975 to increase the fuel economy of cars and light duty trucks. The law has become more stringent over time. On May 19, 2009, President Obama put in motion a new national policy to increase fuel economy for all new cars and trucks sold in the United States. On April 1, 2010, the EPA and the Department of Transportation’s National Highway Safety Administration announced a joint final rule establishing a national program that would reduce greenhouse gas emissions and improve fuel economy for new cars and trucks sold in the United States. The first phase of the national program would apply to passenger cars, light-duty trucks, and medium- duty passenger vehicles, covering model years 2012 through 2016. They require these vehicles to meet an estimated combined average emissions level of 250 grams of carbon dioxide per mile, equivalent to 35.5 miles per gallon if the automobile industry were to meet this carbon dioxide level solely through fuel economy improvements. Together, these standards would cut carbon dioxide emissions by an estimated 960 million metric tons and 1.8 billion barrels of oil over the lifetime of the vehicles sold under the program (model years 2012-2016). The second phase of the national program would involve proposing new fuel economy and greenhouse gas standards for model years 2017 – 2025 by September 1, 2011. On October 25, 2010, the EPA and the U.S. Department of Transportation proposed the first national standards to reduce greenhouse gas emissions and improve fuel efficiency of heavy-duty trucks and buses. For combination tractors, the agencies are proposing engine and vehicle standards that begin in the 2014 model year and achieve up to a 20 percent reduction in carbon dioxide emissions and fuel consumption by the 2018 model year. For heavy-duty pickup trucks and vans, the agencies are proposing separate gasoline and diesel truck standards, which phase in starting in the 2014 model year and achieve up to a 10 percent reduction for gasoline vehicles and 15 percent reduction for diesel vehicles by 2018 model year (12 and 17 percent respectively if accounting for air conditioning leakage). Lastly, for vocational vehicles, the agencies are proposing engine and vehicle standards starting in the 2014 model year which would achieve up to a 10 percent reduction in fuel consumption and carbon dioxide emissions by 2018 model year. Issued by National Highway Traffic Safety Administration (NHTSA) and EPA in March 2020 (published on April 30, 2020 and effective after June 29, 2020), the Safer Affordable Fuel-Efficient Vehicles Rule would maintain the CAFE and CO2 standards applicable in model year 2020 for model years 2021 through 2026. The estimated CAFE and CO2 standards for model year 2020 are 43.7 mpg and 204 grams of CO2 per mile for passenger cars and 31.3 mpg and 284 grams of CO2 per mile for light trucks, projecting an overall industry average of 37 mpg, as compared to 46.7 mpg under the standards issued Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 16 in 2012. This Rule also excludes CO2- equivalent emission improvements associated with air conditioning refrigerants and leakage (and, optionally, offsets for nitrous oxide and methane emissions) after model year 2020.1 Mandatory Reporting of Greenhouse Gases. On January 1, 2010, the EPA started requiring large emitters of heat-trapping emissions to begin collecting GHG data under a new reporting system. Under the rule, suppliers of fossil fuels or industrial greenhouse gases, manufacturers of vehicles and engines, and facilities that emit 25,000 metric tons or more per year of greenhouse gas emissions are required to submit annual reports to the EPA. Climate Adaption Plan. The EPA Plan identifies priority actions the Agency will take to incorporate considerations of climate change into its programs, policies, rules and operations to ensure they are effective under future climatic conditions. The following link provides more information on the EPA Plan: https://www.epa.gov/arc-x/planning-climate-change-adaptation 2.2.3 California California Code of Regulations (CCR) Title 24, Part 6. CCR Title 24, Part 6: California’s Energy Efficiency Standards for Residential and Nonresidential Buildings (Title 24) were first established in 1978 in response to a legislative mandate to reduce California’s energy consumption. The standards are updated periodically to allow consideration and possible incorporation of new energy efficiency technologies and methods. Although it was not originally intended to reduce GHG emissions, electricity production by fossil fuels results in GHG emissions and energy efficient buildings require less electricity. Therefore, increased energy efficiency results in decreased GHG emissions. The Energy Commission adopted 2008 Standards on April 23, 2008 and Building Standards Commission approved them for publication on September 11, 2008. These updates became effective on August 1, 2009. 2013, 2016, and 2019 standards have been approved and became effective July 1, 2014, January 1, 2016, and January 1, 2020, respectively. California Code of Regulations (CCR) Title 24, Part 11. All buildings for which an application for a building permit is submitted on or after January 1, 2020 must follow the 2019 standards. Energy efficient buildings require less electricity; therefore, increased energy efficiency reduces fossil fuel consumption and decreases greenhouse gas emissions. The following links provide more information on Title 24, Part 11: https://www.dgs.ca.gov/BSC/Codes https://www.energy.ca.gov/sites/default/files/2020-03/Title_24_2019_Building_Standards_FAQ_ada.pdf 1 National Highway Traffic Safety Administration (NHTSA) and U.S. Environmental Protection Agency (USEPA), 2018. Federal Register / Vol. 83, No. 165 / Friday, August 24, 2018 / Proposed Rules, The Safer Affordable Fuel-Efficient (SAFE) Vehicles Rule for Model Years 2021–2026 Passenger Cars and Light Trucks 2018. Available at: https://www.gpo.gov/fdsys/pkg/FR-2018-08-24/pdf/2018-16820.pdf. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 17 California Green Building Standards On January 12, 2010, the State Building Standards Commission unanimously adopted updates to the California Green Building Standards Code, which went into effect on January 1, 2011. The Housing and Community Development (HCD) updated CALGreen through the 2015 Triennial Code Adoption Cycle, during the 2016 to 2017 fiscal year. During the 2019-2020 fiscal year, the Department of Housing and Community Development (HCD) updated CALGreen through the 2019 Triennial Code Adoption Cycle. The Code is a comprehensive and uniform regulatory code for all residential, commercial and school buildings. CCR Title 24, Part 11: California Green Building Standards (Title 24) became effective in 2001 in response to continued efforts to reduce GHG emissions associated with energy consumption. CCR Title 24, Part 11 now require that new buildings reduce water consumption, employ building commissioning to increase building system efficiencies, divert construction waste from landfills, and install low pollutant-emitting finish materials. One focus of CCR Title 24, Part 11 is water conservation measures, which reduce GHG emissions by reducing electrical consumption associated with pumping and treating water. CCR Title 24, Part 11 has approximately 52 nonresidential mandatory measures and an additional 130 provisions for optional use. Some key mandatory measures for commercial occupancies include specified parking for clean air vehicles, a 20 percent reduction of potable water use within buildings, a 50 percent construction waste diversion from landfills, use of building finish materials that emit low levels of volatile organic compounds, and commissioning for new, nonresidential buildings over 10,000 square feet. The 2019 CalGreen Code includes the following changes and/or additional regulations: Single-family homes built with the 2019 standards will use about 7 percent less energy due to energy efficiency measures versus those built under the 2016 standards. Once rooftop solar electricity generation is factored in, homes built under the 2019 standards will use about 53 percent less energy than those under the 2016 standards. Nonresidential buildings will use about 30 percent less energy due mainly to lighting upgrades2. HCD modified the best management practices for stormwater pollution prevention adding Section 5.106.2 for projects that disturb one or more acres of land. This section requires projects that disturb one acre or more of land or less than one acre of land but are part of a larger common plan of development or sale must comply with the post-construction requirement detailed in the applicable National Pollutant Discharge Elimination System (NPDES) General Permit for Stormwater Discharges Associated with Construction and Land Disturbance Activities issued by the State Water Resources Control Board. The NPDES permits require post-construction runoff (post-project hydrology) to match the preconstruction runoff pre-project hydrology) with installation of post-construction stormwater management measures. 2 https://ww2.energy.ca.gov/title24/2019standards/documents/2018_Title_24_2019_Building_Standards_FAQ.pdf Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 18 HCD added sections 5.106.4.1.3 and 5.106.4.1.5 in regards to bicycle parking. Section 5.106.4.1.3 requires new buildings with tenant spaces that have 10 or more tenant-occupants, provide secure bicycle parking for 5 percent of the tenant-occupant vehicular parking spaces with a minimum of one bicycle parking facility. In addition, Section 5.106.4.1.5 states that acceptable bicycle parking facility for Sections 5.106.4.1.2 through 5.106.4.1.4 shall be convenient from the street and shall meeting one of the following: (1) covered, lockable enclosures with permanently anchored racks for bicycles; (2) lockable bicycle rooms with permanently anchored racks; or (3) lockable, permanently anchored bicycle lockers. HCD amended section 5.106.5.3.5 allowing future charging spaces to qualify as designated parking for clean air vehicles. HCD updated section 5.303.3.3 in regards to showerhead flow rates. This update reduced the flow rate to 1.8 GPM. HCD amended section 5.304.1 for outdoor potable water use in landscape areas and repealed sections 5.304.2 and 5.304.3. The update requires nonresidential developments to comply with a local water efficient landscape ordinance or the current California Department of Water Resource’s’ Model Water Efficient Landscape Ordinance (MWELO), whichever is more stringent. Some updates were also made in regards to the outdoor potable water use in landscape areas for public schools and community colleges. HCD updated Section 5.504.5.3 in regards to the use of MERV filters in mechanically ventilated buildings. This update changed the filter use from MERV 8 to MERV 13. The California Green Building Standards Code does not prevent a local jurisdiction from adopting a more stringent code as state law provides methods for local enhancements. The Code recognizes that many jurisdictions have developed existing construction and demolition ordinances, and defers to them as the ruling guidance provided they provide a minimum 50-percent diversion requirement. The code also provides exemptions for areas not served by construction and demolition recycling infrastructure. State building code provides the minimum standard that buildings need to meet in order to be certified for occupancy. Enforcement is generally through the local building official. The following link provides more on CalGreen Building Standards: http://www.bsc.ca.gov/Home/CALGreen.aspx Executive Order S-3-05. California Governor issued Executive Order S-3-05, GHG Emission, in June 2005, which established the following targets: x By 2010, California shall reduce greenhouse gas emissions to 2000 levels; x By 2020, California shall reduce greenhouse gas emissions to 1990 levels. x By 2050, California shall reduce greenhouse gas emissions to 80 percent below 1990 levels. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 19 The executive order directed the secretary of the California Environmental Protection Agency (CalEPA) to coordinate a multi-agency effort to reduce GHG emissions to the target levels. To comply with the Executive Order, the secretary of CalEPA created the California Climate Action Team (CAT), made up of members from various state agencies and commissions. The team released its first report in March 2006. The report proposed to achieve the targets by building on the voluntary actions of businesses, local governments, and communities and through State incentive and regulatory programs. Executive Order S-01-07. Executive Order S-1-07 was issued in 2007 and proclaims that the transportation sector is the main source of GHG emissions in the State, since it generates more than 40 percent of the State’s GHG emissions. It establishes a goal to reduce the carbon intensity of transportation fuels sold in the State by at least ten percent by 2020. This Order also directs CARB to determine whether this Low Carbon Fuel Standard (LCFS) could be adopted as a discrete early-action measure as part of the effort to meet the mandates in AB 32. On April 23, 2009 CARB approved the proposed regulation to implement the low carbon fuel standard and began implementation on January 1, 2011. The low carbon fuel standard is anticipated to reduce GHG emissions by about 16 MMT per year by 2020. CARB approved some amendments to the LCFS in December 2011, which were implemented on January 1, 2013. In September 2015, the Board approved the re-adoption of the LCFS, which became effective on January 1, 2016, to address procedural deficiencies in the way the original regulation was adopted. In 2018, the Board approved amendments to the regulation, which included strengthening and smoothing the carbon intensity benchmarks through 2030 in-line with California's 2030 GHG emission reduction target enacted through SB 32, adding new crediting opportunities to promote zero emission vehicle adoption, alternative jet fuel, carbon capture and sequestration, and advanced technologies to achieve deep decarbonization in the transportation sector. The LCFS is designed to encourage the use of cleaner low-carbon transportation fuels in California, encourage the production of those fuels, and therefore, reduce GHG emissions and decrease petroleum dependence in the transportation sector. Separate standards are established for gasoline and diesel fuels and the alternative fuels that can replace each. The standards are “back-loaded”, with more reductions required in the last five years, than the first five years. This schedule allows for the development of advanced fuels that are lower in carbon than today’s fuels and the market penetration of plug-in hybrid electric vehicles, battery electric vehicles, fuel cell vehicles, and flexible fuel vehicles. It is anticipated that compliance with the low carbon fuel standard will be based on a combination of both lower carbon fuels and more efficient vehicles. Reformulated gasoline mixed with corn-derived ethanol at ten percent by volume and low sulfur diesel fuel represent the baseline fuels. Lower carbon fuels may be ethanol, biodiesel, renewable diesel, or blends of these fuels with gasoline or diesel as appropriate. Compressed natural gas and liquefied natural gas also may be low carbon fuels. Hydrogen and electricity, when used in fuel cells or electric vehicles are also considered as low carbon fuels for the low carbon fuel standard. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 20 SB 97. Senate Bill 97 (SB 97) was adopted August 2007 and acknowledges that climate change is a prominent environmental issue that requires analysis under CEQA. SB 97 directed the Governor’s Office of Planning and Research (OPR), which is part of the State Resource Agency, to prepare, develop, and transmit to CARB guidelines for the feasible mitigation of GHG emissions or the effects of GHG emissions, as required by CEQA, by July 1, 2009. The Resources Agency was required to certify and adopt those guidelines by January 1, 2010. Pursuant to the requirements of SB 97 as stated above, on December 30, 2009 the Natural Resources Agency adopted amendments to the state CEQA guidelines that address GHG emissions. The CEQA Guidelines Amendments changed 14 sections of the CEQA Guidelines and incorporate GHG language throughout the Guidelines. However, no GHG emissions thresholds of significance are provided and no specific mitigation measures are identified. The GHG emission reduction amendments went into effect on March 18, 2010 and are summarized below: x Climate action plans and other greenhouse gas reduction plans can be used to determine whether a project has significant impacts, based upon its compliance with the plan. x Local governments are encouraged to quantify the greenhouse gas emissions of proposed projects, noting that they have the freedom to select the models and methodologies that best meet their needs and circumstances. The section also recommends consideration of several qualitative factors that may be used in the determination of significance, such as the extent to which the given project complies with state, regional, or local GHG reduction plans and policies. OPR does not set or dictate specific thresholds of significance. Consistent with existing CEQA Guidelines, OPR encourages local governments to develop and publish their own thresholds of significance for GHG impacts assessment. x When creating their own thresholds of significance, local governments may consider the thresholds of significance adopted or recommended by other public agencies, or recommended by experts. x New amendments include guidelines for determining methods to mitigate the effects of greenhouse gas emissions in Appendix F of the CEQA Guidelines. x OPR is clear to state that “to qualify as mitigation, specific measures from an existing plan must be identified and incorporated into the project; general compliance with a plan, by itself, is not mitigation.” x OPR’s emphasizes the advantages of analyzing GHG impacts on an institutional, programmatic level. OPR therefore approves tiering of environmental analyses and highlights some benefits of such an approach. x Environmental impact reports (EIRs) must specifically consider a project's energy use and energy efficiency potential. AB 32. The California State Legislature enacted AB 32, the California Global Warming Solutions Act of 2006. AB 32 requires that greenhouse gases emitted in California be reduced to 1990 levels by the year 2020. “Greenhouse gases” as defined under AB 32 include carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride. ARB is the state agency charged with monitoring and regulating sources of greenhouse gases. AB 32 states the following: Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 21 Global warming poses a serious threat to the economic well-being, public health, natural resources, and the environment of California. The potential adverse impacts of global warming include the exacerbation of air quality problems, a reduction in the quality and supply of water to the state from the Sierra snowpack, a rise in sea levels resulting in the displacement of thousands of coastal businesses and residences, damage to marine ecosystems and the natural environment, and an increase in the incidences of infectious diseases, asthma, and other human health-related problems. The ARB Board approved the 1990 greenhouse gas emissions level of 427 million metric tons of carbon dioxide equivalent (MMTCO2e) on December 6, 2007 (California Air Resources Board 2007). Therefore, emissions generated in California in 2020 are required to be equal to or less than 427 MMTCO2e. Emissions in 2020 in a “business as usual” scenario are estimated to be 596 MMTCO2e. Under AB 32, the ARB published its Final Expanded List of Early Action Measures to Reduce Greenhouse Gas Emissions in California. Discrete early action measures are currently underway or are enforceable by January 1, 2010. The ARB has 44 early action measures that apply to the transportation, commercial, forestry, agriculture, cement, oil and gas, fire suppression, fuels, education, energy efficiency, electricity, and waste sectors. Of these early action measures, nine are considered discrete early action measures, as they are regulatory and enforceable by January 1, 2010. The ARB estimates that the 44 recommendations are expected to result in reductions of at least 42 MMTCO2e by 2020, representing approximately 25 percent of the 2020 target. The ARB’s Climate Change Scoping Plan (Scoping Plan) contains measures designed to reduce the State’s emissions to 1990 levels by the year 2020 (California Air Resources Board 2008). The Scoping Plan identifies recommended measures for multiple greenhouse gas emission sectors and the associated emission reductions needed to achieve the year 2020 emissions target—each sector has a different emission reduction target. Most of the measures target the transportation and electricity sectors. As stated in the Scoping Plan, the key elements of the strategy for achieving the 2020 greenhouse gas target include: x Expanding and strengthening existing energy efficiency programs as well as building and appliance standards; x Achieving a statewide renewables energy mix of 33 percent; x Developing a California cap-and-trade program that links with other Western Climate Initiative partner programs to create a regional market system; x Establishing targets for transportation-related greenhouse gas emissions for regions throughout California and pursuing policies and incentives to achieve those targets; x Adopting and implementing measures pursuant to existing State laws and policies, Including California’s clean car standards, goods movement measures, and the Low Carbon Fuel Standard; and x Creating targeted fees, including a public goods charge on water use, fees on high global warming potential gases, and a fee to fund the administrative costs of the State’s long-term commitment to AB 32 implementation. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 22 In addition, the Scoping Plan differentiates between “capped” and “uncapped” strategies. “Capped” strategies are subject to the proposed cap-and-trade program. The Scoping Plan states that the inclusion of these emissions within the cap-and trade program will help ensure that the year 2020 emission targets are met despite some degree of uncertainty in the emission reduction estimates for any individual measure. Implementation of the capped strategies is calculated to achieve a sufficient amount of reductions by 2020 to achieve the emission target contained in AB 32. “Uncapped” strategies that will not be subject to the cap-and-trade emissions caps and requirements are provided as a margin of safety by accounting for additional greenhouse gas emission reductions.4 Senate Bill 100. Senate Bill 100 (SB 100) requires 100 percent of total retail sales of electricity in California to come from eligible renewable energy resources and zero-carbon resources by December 31, 2045. SB 100 was adopted September 2018. The interim thresholds from prior Senate Bills and Executive Orders would also remain in effect. These include Senate Bill 1078 (SB 1078), which requires retail sellers of electricity, including investor-owned utilities and community choice aggregators, to provide at least 20 percent of their supply from renewable sources by 2017. Senate Bill 107 (SB 107) which changed the target date to 2010. Executive Order S-14-08, which was signed on November 2008 and expanded the State’s Renewable Energy Standard to 33 percent renewable energy by 2020. Executive Order S-21-09 directed the CARB to adopt regulations by July 31, 2010 to enforce S-14-08. Senate Bill X1-2 codifies the 33 percent renewable energy requirement by 2020. SB 375. Senate Bill 375 (SB 375) was adopted September 2008 and aligns regional transportation planning efforts, regional GHG emission reduction targets, and land use and housing allocation. SB 375 requires Metropolitan Planning Organizations (MPO) to adopt a sustainable communities strategy (SCS) or alternate planning strategy (APS) that will prescribe land use allocation in that MPOs Regional Transportation Plan (RTP). CARB, in consultation with each MPO, will provide each affected region with reduction targets for GHGs emitted by passenger cars and light trucks in the region for the years 2020 and 2035. These reduction targets will be updated every eight years but can be updated every four years if advancements in emissions technologies affect the reduction strategies to achieve the targets. CARB is also charged with reviewing each MPO’s sustainable communities strategy or alternate planning strategy for consistency with its assigned targets. The proposed project is located within the Southern California Association of Governments (SCAG), which has authority to develop the SCS or APS. For the SCAG region, the targets set by CARB are at eight percent below 2005 per capita GHG emissions levels by 2020 and 13 percent below 2005 per capita GHG emissions levels by 2035. On April 4, 2012, SCAG adopted the 2012-2035 Regional Transportation Plan / Sustainable Communities Strategy (RTP/SCS), which meets the CARB emission reduction requirements. On September 3, 2020, SCAG’s Regional Council approved and fully adopted the Connect SoCal (2020– 2045 Regional Transportation Plan/Sustainable Communities Strategy), and the addendum to the Connect SoCal Program Environmental Impact Report. Connect SoCal is a long-range visioning plan that builds upon and expands land use and transportation strategies established over several planning Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 23 cycles to increase mobility options and achieve a more sustainable growth pattern. Connect SoCal outlines more than $638 billion in transportation system investments through 2045. Connect SoCal is supported by a combination of transportation and land use strategies that help the region achieve state greenhouse gas emission reduction goals and federal Clean Air Act requirements, preserve open space areas, improve public health and roadway safety, support our vital goods movement industry and utilize resources more efficiently. By integrating the Forecasted Development Pattern with a suite of financially constrained transportation investments, Connect SoCal can reach the regional target of reducing greenhouse gases, or GHGs, from autos and light-duty trucks by 8 percent per capita by 2020, and 19 percent by 2035 (compared to 2005 levels). City and County land use policies, including General Plans, are not required to be consistent with the RTP and associated SCS or APS. However, new provisions of CEQA would incentivize, through streamlining and other provisions, qualified projects that are consistent with an approved SCS or APS and categorized as “transit priority projects.” Assembly Bill 939, Assembly Bill 341, and Senate Bill 1374. Assembly Bill 939 (AB 939) requires that each jurisdiction in California to divert at least 50 percent of its waste away from landfills, whether through waste reduction, recycling or other means. AB 341 requires at least 75 percent of generated waste be source reduced, recycled, or composted by the year 2020. Senate Bill 1374 (SB 1374) requires the California Integrated Waste Management Board to adopt a model ordinance by March 1, 2004 suitable for adoption by any local agency to require 50 to 75 percent diversion of construction and demolition of waste materials from landfills. Executive Order S-13-08. Executive Order S-13-08 indicates that “climate change in California during the next century is expected to shift precipitation patterns, accelerate sea level rise and increase temperatures, thereby posing a serious threat to California’s economy, to the health and welfare of its population and to its natural resources.” Pursuant to the requirements in the order, the 2009 California Climate Adaptation Strategy (California Natural Resource Agency 2009) was adopted, which is the “… first statewide, multi-sector, region-specific, and information-based climate change in California, identifying and exploring strategies to adapt to climate change, and specifying a direction for future research. Executive Order B-30-15. Executive Order B-30-15, establishing a new interim statewide greenhouse gas emission reduction target to reduce greenhouse gas emissions to 40 percent below 1990 levels by 2030, was signed by Governor Brown in April 2015. Executive Order B-29-15. Executive Order B-29-15, mandates a statewide 25% reduction in potable water usage and was signed into law on April 1, 2015. Executive Order B-37-16. Executive Order B-37-16, continuing the State’s adopted water reduction, was signed into law on May 9, 2016. The water reduction builds off the mandatory 25% reduction called for in EO B-29-15. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 24 Executive Order N-79-20. Executive Order N-79-20 was signed into law on September 23, 2020 and mandates 100 percent of in-state sales of new passenger cars and trucks be zero-emission by 2035; 100 percent of medium- and heavy-duty vehicles in the state be zero-emission vehicles by 2045 for all operations where feasible and by 2035 for drayage trucks; and to transition to 100 percent zero- emission off-road vehicles and equipment by 2035 where feasible. 2.2.4 South Coast Air Quality Management District The Project is within the Salton Sea Air Basin, which is under the jurisdiction of the South Coast Air Quality Management District (SCAQMD). SCAQMD Regulation XXVII currently includes three rules: x The purpose of Rule 2700 is to define terms and post global warming potentials. x The purpose of Rule 2701, SoCal Climate Solutions Exchange, is to establish a voluntary program to encourage, quantify, and certify voluntary, high quality certified greenhouse gas emission reductions in the SCAQMD. x Rule 2702, Greenhouse Gas Reduction Program, was adopted on February 6, 2009. The purpose of this rule is to create a Greenhouse Gas Reduction Program for greenhouse gas emission reductions in the SCAQMD. The SCAQMD will fund projects through contracts in response to requests for proposals or purchase reductions from other parties. SCAQMD Threshold Development The SCAQMD has established recommended significance thresholds for greenhouse gases for local lead agency consideration (“SCAQMD draft local agency threshold”). SCAQMD has published a five-tiered draft GHG threshold which includes a 10,000 metric ton of CO2e per year for stationary/industrial sources and 3,000 metric tons of CO2e per year significance threshold for residential/commercial projects (South Coast Air Quality Management District 2010c). Tier 3 is anticipated to be the primary tier by which the SCAQMD will determine significance for projects. The Tier 3 screening level for stationary sources is based on an emission capture rate of 90 percent for all new or modified projects. A 90-precent emission capture rate means that 90 percent of total emissions from all new or modified stationary source projects would be subject to CEQA analysis. The 90-percent capture rate GHG significance screening level in Tier 3 for stationary sources was derived using the SCAQMD’s annual Emissions Reporting Program. The current draft thresholds consist of the following tiered approach: x Tier 1 consists of evaluating whether or not the project qualifies for any applicable exemption under CEQA. x Tier 2 consists of determining whether or not the project is consistent with a greenhouse gas reduction plan. If a project is consistent with a qualifying local greenhouse gas reduction plan, it does not have significant greenhouse gas emissions. x Tier 3 consists of screening values, which the lead agency can choose but must be consistent. A project’s construction emissions are averaged over 30 years and are added to a project’s Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 25 operational emissions. If a project’s emissions are under one of the following screening thresholds, then the project is less than significant: - All land use types: 3,000 MTCO2e per year - Based on land use types: residential is 3,500 MTCO2e per year; commercial is 1,400 MTCO2e per year; and mixed use is 3,000 MTCO2e per year x Tier 4 has the following options: - Option 1: Reduce emissions from business as usual by a certain percentage; this percentage is currently undefined - Option 2: Early implementation of applicable AB 32 Scoping Plan measures - Option 3: Year 2020 target for service populations (SP), which includes residents and employees: 4.8 MTCO2e/SP/year for projects and 6.6 MTCO2e/SP/year for plans; - Option 3, 2035 target: 3.0 MTCO2e/SP/year for projects and 4.1 MTCO2e/SP/year for plans x Tier 5 involves mitigation offsets to achieve target significance threshold. 2.2.5 Local County of Riverside Climate Action Plan The County of Riverside’s Climate Action Plan Update (CAP) was completed in November 2019. The CAP Update describes Riverside County’s GHG emissions for the year 2017, projects how these emissions will increase into 2020, 2030, and 2050, and includes strategies to reduce emissions to a level consistent with the State of California’s emissions reduction targets. The CAP Update sets a target to reduce community-wide GHG emission emissions by 15 percent from 2008 levels by 2020, 49 percent by 2030, and 83 percent by 2050. Appendix D of the Riverside County CAP Update also states that project's that do not exceed the CAP's screening threshold of 3,000 MTCO2e per year are considered to have less than significant GHG emissions and are in compliance with the County's CAP Update. Therefore, to determine whether the project's GHG emissions are significant, this analysis uses the County of Riverside CAP Update screening threshold of 3,000 MTCO2e per year for all land use types. Projects that do not exceed emissions of 3,000 MTCO2e per year are also required to include the following efficiency measures: x Energy efficiency matching or exceeding the Title 24 requirements in effect as of January 2017, and x Water conservation measures that matches the California Green Building Code in effect as of January 2017. Projects that exceed emissions of 3,000 MTCO2e per year are also required to use Screening Tables. Projects that garner at least 100 points will be consistent with the reduction quantities anticipated in the County’s CAP Update. Consistent with CEQA Guidelines, such projects would be determined to have a less than significant individual and cumulative impact for GHG emissions. Those projects that do not garner 100 points using the Screening Tables will need to provide additional analysis to determine the significance of GHG emissions. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Regulatory Framework and Background 26 In order to meet the state-wide efficiency metric targets, the CAP must demonstrate that it can reduce community-wide emissions to 6.6 MT CO2e/SP (or 944,737 MT CO2e total based on an estimated 2020 service population of 143,142) by 2020 and 4.4 MT CO2e/SP (or 1,334,243 MT CO2e based on an estimated 2030 service population of 303,237) by 2030. Therefore, to determine whether the project's GHG emissions are significant, this analysis uses the County of Riverside CAP Update and SCAQMD draft local agency tier 3 screening threshold of 3,000 MTCO2e. The project will be subject to the latest requirements of the California Green Building and Title 24 Energy Efficiency Standards (currently 2019) which would reduce project-related greenhouse gas emissions. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Setting 27 3.0 Setting 3.1 Existing Physical Setting The project site is located in the City of Palm Desert within the County of Riverside, which is part of the Salton Sea Air Basin (SSAB). The middle part of Riverside County (between San Gorgonio Pass and Joshua Tree National Monument), belongs in the Salton Sea Air Basin (SSAB), along with Imperial County. The SSAB portion of Riverside County is separated from the South Coast Air Basin region by the San Jacinto Mountains and from the Mojave Desert Air Basin to the east by the Little San Bernardino Mountains. 3.1.1 Local Climate and Meteorology During the summer, the SSAB is generally influenced by a Pacific Subtropical High Cell that sits off the coast, inhibiting cloud formation and encouraging daytime solar heating. The SSAB is rarely influenced by cold air masses moving south from Canada and Alaska, as these systems are weak and diffuse by the time they reach the desert. Most desert moisture arrives from infrequent warm, moist, and unstable air masses from the south. The SSAB averages between three and seven inches of precipitation per year. The Coachella Valley is a geographically and meteorologically unique area wholly contained within the Salton Sea Air Basin. The region is currently impacted by significant air pollution levels caused by the transport of pollutants from coastal air basins to the west, primarily ozone, and locally generated PM10. The mountains surrounding the region isolate the Valley from coastal influences and create a hot and dry low-lying desert (see Table 3). As the desert heats up it draws cooler coastal air through the narrow San Gorgonio Pass, generating strong and sustained winds that cross the fluvial (water caused) and aeolian (wind) erosion zones in the Valley. These strong winds suspend and transport large quantities of sand and dust, reducing visibility, damaging property, and constituting a significant health threat. The temperature and precipitation levels for the City of Palm Springs, closest monitoring station to the project site, are in Table 3. Table 3 shows that July is typically the warmest month and December is typically the coolest month. Rainfall in the project area varies considerably in both time and space. Almost all the annual rainfall comes from the fringes of mid-latitude storms from late November to early April, with summers being almost completely dry. <Table 3, next page> Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Setting 28 Table 3: Meteorological Summary Month Temperature (˚F) Average Precipitation (inches) Average High Average Low January 69.6 42.1 1.14 February 73.6 45.3 1.02 March 79.4 48.6 0.59 April 86.9 54 0.17 May 94.4 60.2 0.05 June 103.1 66.7 0.06 July 108.3 74.8 0.2 August 106.9 74.2 0.3 September 101.8 67.9 0.34 October 91.6 59.2 0.26 November 78.7 48.8 0.47 December 70.1 42.1 0.93 Annual Average 88.7 57 5.53 Notes: 1 Source: Western Regional Climate Center. 2005. https://wrcc.dri.edu/cgi-bin/cliMAIN.pl?caplms+sca 3.1.2 Local Air Quality The SCAQMD is divided into 38 air-monitoring areas with a designated ambient air monitoring station representative of each area. The project site is located in the City of Palm Desert within the County of Riverside in the Coachella Valley (Area 30). The nearest air monitoring station to the project site is the Palm Springs – Fire Station (Palm Springs Station) approximately 9.9 miles northwest of the site. However, this location does not provide all ambient weather data. Therefore, additional data was pulled from the SCAQMD historical data for the Coachella Valley Area (Area 30) for both sulfur dioxide and carbon monoxide to provide the existing levels. Table 4 presents the monitored pollutant levels within the vicinity. However, it should be noted that due to the air monitoring station distance from the project site, recorded air pollution levels at the air monitoring station reflect with varying degrees of accuracy, local air quality conditions at the project site. <Table 4, next page> Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Setting 29 Table 4: Local Area Air Quality Levels from Palm Springs Air Monitoring Station1 Year Pollutant (Standard)2 2018 2019 2020 Ozone: Maximum 1-Hour Concentration (ppm) 0.111 0.100 0.119 Days > CAAQS (0.09 ppm) 11 5 9 Maximum 8-Hour Concentration (ppm) 0.099 0.084 0.094 Days > NAAQS (0.07 ppm) 56 34 49 Days > CAAQS (0.070 ppm) 58 39 53 Carbon Monoxide: Maximum 1-Hour Concentration (ppm) 1.1 1.3 0.8 Days > NAAQS (20 ppm) 0 0 0 Maximum 8-Hour Concentration (ppm) 0.8 0.7 0.5 Days > NAAQS (9 ppm) 0 0 0 Nitrogen Dioxide: Maximum 1-Hour Concentration (ppm) 0.043 0.041 0.047 Days > NAAQS (0.25 ppm) 0 0 0 Sulfur Dioxide:3 Maximum 1-Hour Concentration (ppm) - - - Days > CAAQS (0.25 ppm) - - - Inhalable Particulates (PM10): Maximum 24-Hour Concentration (ug/m3) 422.3 75.6 129.8 Days > NAAQS (150 ug/m3) 2 0 * Days > CAAQS (50 ug/m3) 0 6 * Annual Average (ug/m3) 22.9 20.7 23.2 Annual > NAAQS (50 ug/m3) No No No Annual > CAAQS (20 ug/m3) Yes Yes Yes Ultra-Fine Particulates (PM2.5): Maximum 24-Hour Concentration (ug/m3) 30.2 15.5 23.9 Days > NAAQS (35 ug/m3) 0 0 0 Annual Average (ug/m3) 6 6 6.4 Annual > NAAQS (15 ug/m3) No No No Annual > CAAQS (12 ug/m3) No No No 1. Source: obtained from SCAQMD (2020, https://www.aqmd.gov/home/air-quality/air-quality-data-studies/historical-data-by-year) and/or CARB (2020, https://www.arb.ca.gov/adam/topfour/topfour1.php). 2 CAAQS = California Ambient Air Quality Standard; NAAQS = National Ambient Air Quality Standard; ppm = parts per million 3 No data available. The monitoring data presented in Table 4 shows that ozone is the air pollutant of primary concern in the project area, which are detailed below. Ozone During the 2018 to 2020 monitoring period, the State 1-hour concentration standard for ozone has been exceeded between five and eleven days each year at the Palm Springs Station. The State 8-hour ozone standard has been exceeded between 39 and 58 days each year over the past three years at the Palm Springs Station. The Federal 8-hour ozone standard has been exceeded between 34 and 56 days each year over the past three years at the Palm Springs Station. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Setting 30 Ozone is a secondary pollutant as it is not directly emitted. Ozone is the result of chemical reactions between other pollutants, most importantly hydrocarbons and NO2, which occur only in the presence of bright sunlight. Pollutants emitted from upwind cities react during transport downwind to produce the oxidant concentrations experienced in the area. Many areas of the SCAQMD contribute to the ozone levels experienced at the monitoring station, with the more significant areas being those directly upwind. Carbon Monoxide CO is another important pollutant that is due mainly to motor vehicles. During the 2018 to 2020 monitoring period, the Federal 1-hour and 8-hour concentration standards for CO were not exceeded. Nitrogen Dioxide During the 2018 to 2020 monitoring period, the Federal 1-hour concentration standard for Nitrogen Dioazide has not been exceeded. Sulfur Dioxide The Coachella Valley Area did not have SO2 data available for the last three years. Particulate Matter During the 2018 to 2020 monitoring period, the Palm Springs Station recorded two days of exceedance of the Federal 24-hour PM10 concentration standard and an exceedance in the State PM10annual average standard. During the same period, the Palm Springs Station did not record an exceedance of the Federal 24-hour standard for PM2.5. According to the EPA, some people are much more sensitive than others to breathing fine particles (PM10 and PM2.5). People with influenza, chronic respiratory and cardiovascular diseases, and the elderly may suffer worsening illness and premature death due to breathing these fine particles. People with bronchitis can expect aggravated symptoms from breathing in fine particles. Children may experience decline in lung function due to breathing in PM10 and PM2.5. Other groups considered sensitive are smokers and people who cannot breathe well through their noses. Exercising athletes are also considered sensitive, because many breathe through their mouths during exercise. 3.1.3 Attainment Status The EPA and the ARB designate air basins where ambient air quality standards are exceeded as “nonattainment” areas. If standards are met, the area is designated as an “attainment” area. If there is inadequate or inconclusive data to make a definitive attainment designation, they are considered “unclassified.” National nonattainment areas are further designated as marginal, moderate, serious, severe, or extreme as a function of deviation from standards. Each standard has a different definition, or ‘form’ of what constitutes attainment, based on specific air quality statistics. For example, the Federal 8-hour CO standard is not to be exceeded more than once per year; therefore, an area is in Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Setting 31 attainment of the CO standard if no more than one 8-hour ambient air monitoring values exceeds the threshold per year. In contrast, the federal annual PM 2.5 standard is met if the three-year average of the annual average PM2.5 concentration is less than or equal to the standard. Table 5 lists the attainment status for the criteria pollutants in the basin. Table 5: Coachella Valley Portion of the Salton Sea Air Basin Attainment Status Pollutant Averaging Time National Standards1 Attainment Date2 California Standards2 1979 1-Hour Ozone3 1-Hour (0.12 ppm) Attainment 11/15/2007 (Attained 12/31/2013) Nonattainment 1-Hour (0.09 ppm) - - Nonattainment 2015 8-Hour Ozone4 8-Hour (0.070 ppm) Pending - Expect Nonattainment (Severe) Pending Nonattainment 2008 8-Hour Ozone4 8-Hour (0.075 ppm) Nonattainment (Severe-15) 7/20/2027 - 1997 8-Hour Ozone4 8-Hour (0.08 ppm) Nonattainment (Severe-15) 6/15/2019 - CO 1-Hour (20 ppm) 8-hour (9.0 ppm) - - Attainment 1-Hour (35 ppm) 8-Hour (9 ppm) Unclassifiable/ Attainment N/A (attained) - NO27 1-hour (0.18 ppm) Annual (0.03 ppm) - - Attainment 1-Hour (100 ppb) Annual (0.053 ppm) Unclassifiable/ Attainment N/A (attained) - SO28 1-Hour (0.25 ppm) 24-Hour (0.04 ppm) - - Attainment 1-Hour (75 ppb) Designations Pending N/A - 24-Hour (0.14 ppm) Annual (0.03 ppm) Unclassifiable/ Attainment Unclassifiable/Attainment PM106 24-Hour (50 μg/m3) Annual (20 50 μg/m3) - - Nonattainment 24-Hour (150 μg/m3) Nonattainment (Serious) 12/31/2006 - PM2.55 Annual (12.0 μg/m3) - - Attainment 24-Hour (35 μg/m3) Unclassifiable/ Attainment N/A (attained) - Lead 3-Months Rolling (0.15 μg/m3) Unclassifiable/ Attainment Unclassifiable/Attainment Attainment Notes: 1 Obtained from 2016 AQMP, SCAQMD, 2016. EPA often only declares Nonattainment areas; everywhere else is listed as Unclassified/Attainment or Unclassifiable. 2 A design value below the NAAQS for data through the full year or smog season prior to the attainment date is typically required for attainment demonstration. 3 The 1979 1-hour ozone NAAQS (0.12 ppm) was revoked, effective 6/15/05; the Southeast Desert Modified Air Quality Management Area, including the Coachella Valley, had not timely attained this standard by the 11/15/07 “severe-17” deadline, based on 2005-2007 data; on 8/25/14, U.S. EPA proposed a clean data finding based on 2011-2013 data and a determination of attainment for the former 1-hour ozone NAAQS for the Southeast Desert nonattainment area; this rule was finalized by U.S. EPA on 4/15/15, effective 5/15/15, and included preliminary 2014 data 4 The 2008 8-hour ozone NAAQS (0.075 ppm) was revised to 0.070 ppm, effective 12/28/15 with classifications and implementation goals to be finalized by 10/1/17; the 1997 8-hour ozone NAAQS (0.08 ppm) was revoked in the 2008 ozone NAAQS implementation rule, effective 4/6/15; there are continuing obligations under the 1997 and 2008 ozone NAAQS until they are attained 5 The annual PM2.5 standard was revised on 1/15/13, effective 3/18/13, from 15 to 12 μg/m3 6 The annual PM10 standard was revoked, effective 12/18/06; the 24-hour PM10 NAAQS attainment deadline was 12/31/2006; the Coachella Valley Attainment Re-designation Request and PM10 Maintenance Plan was postponed by U.S. EPA pending additional monitoring and analysis in the southeastern Coachella Valley 7 New 1-hour NO2 NAAQS became effective 8/2/10; attainment designations 1/20/12; annual NO2 NAAQS retained 8 The 1971 Annual and 24-hour SO2 NAAQS were revoked, effective 8/23/10; however, these 1971 standards will remain in effect until one year after U.S. EPA promulgates area designations for the 2010 SO2 1-hour standard; final area designations expected by 12/31/2020 with SSAB expected to be designated Unclassifiable/Attainment Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Setting 32 3.2 Greenhouse Gases Constituent gases of the Earth’s atmosphere, called atmospheric greenhouse gases (GHG), play a critical role in the Earth’s radiation amount by trapping infrared radiation emitted from the Earth’s surface, which otherwise would have escaped to space. Prominent greenhouse gases contributing to this process include carbon dioxide (CO2), methane (CH4), ozone, water vapor, nitrous oxide (N2O), and chlorofluorocarbons (CFCs). This phenomenon, known as the Greenhouse Effect, is responsible for maintaining a habitable climate. Anthropogenic (caused or produced by humans) emissions of these greenhouse gases in excess of natural ambient concentrations are responsible for the enhancement of the Greenhouse Effect and have led to a trend of unnatural warming of the Earth’s natural climate, known as global warming or climate change. Emissions of gases that induce global warming are attributable to human activities associated with industrial/manufacturing, agriculture, utilities, transportation, and residential land uses. Transportation is responsible for 41 percent of the State’s greenhouse gas emissions, followed by electricity generation. Emissions of CO2 and nitrous oxide (NO2) are byproducts of fossil fuel combustion. Methane, a potent greenhouse gas, results from off-gassing associated with agricultural practices and landfills. Sinks of CO 2, where CO2 is stored outside of the atmosphere, include uptake by vegetation and dissolution into the ocean. Table 6 provides a description of each of the greenhouse gases and their global warming potential. Additional information is available: https://www.arb.ca.gov/cc/inventory/data/data.htm <Table 6, next page> Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Setting 33 Table 6: Description of Greenhouse Gases Greenhouse Gas Description and Physical Properties Sources Nitrous oxide Nitrous oxide (N20),also known as laughing gas is a colorless gas. It has a lifetime of 114 years. Its global warming potential is 298. Microbial processes in soil and water, fuel combustion, and industrial processes. In addition to agricultural sources, some industrial processes (nylon production, nitric acid production) also emit N20. Methane Methane (CH4) is a flammable gas and is the main component of natural gas. It has a lifetime of 12 years. Its global warming potential is 25. A natural source of CH4 is from the decay of organic matter. Methane is extracted from geological deposits (natural gas fields). Other sources are from the decay of organic material in landfills, fermentation of manure, and cattle farming. Carbon dioxide Carbon dioxide (CO2) is an odorless, colorless, natural greenhouse gas. Carbon dioxide’s global warming potential is 1. The concentration in 2005 was 379 parts per million (ppm), which is an increase of about 1.4 ppm per year since 1960. Natural sources include decomposition of dead organic matter; respiration of bacteria, plants, animals, and fungus; evaporation from oceans; and volcanic outgassing. Anthropogenic sources are from burning coal, oil, natural gas, and wood. Chlorofluorocarbons CFCs are nontoxic, nonflammable, insoluble, and chemically unreactive in the troposphere (the level of air at the earth’s surface). They are gases formed synthetically by replacing all hydrogen atoms in methane or methane with chlorine and/or fluorine atoms. Global warming potentials range from 3,800 to 8,100. Chlorofluorocarbons were synthesized in 1928 for use as refrigerants, aerosol propellants, and cleaning solvents. They destroy stratospheric ozone, therefore their production was stopped as required by the Montreal Protocol. Hydrofluorocarbons Hydrofluorocarbons (HFCs) are a group of greenhouse gases containing carbon, chlorine, and at least one hydrogen atom. Global warming potentials range from 140 to 11,700. Hydrofluorocarbons are synthetic manmade chemicals used as a substitute for chlorofluorocarbons in applications such as automobile air conditioners and refrigerants. Perfluorocarbons Perfluorocarbons (PFCs) have stable molecular structures and only break down by ultraviolet rays about 60 kilometers above the Earth's surface. They have a lifetime 10,000 to 50,000 years. They have a global warming potential range of 6,200 to 9,500. Two main sources of perfluorocarbons are primary aluminum production and semiconductor manufacturing. Sulfur hexafluoride Sulfur hexafluoride (SF6) is an inorganic, odorless, colorless, and nontoxic, nonflammable gas. It has a lifetime of 3,200 years. It has a high global warming potential, 23,900. This gas is manmade and used for insulation in electric power transmission equipment, in the magnesium industry, in semiconductor manufacturing, and as a tracer gas for leak detection. Notes: 1. Sources: Intergovernmental Panel on Climate Change 2014a and Intergovernmental Panel on Climate Change 2014b. https://www.ipcc.ch/publications_and_data/ar4/wg1/en/ch2s2-10-2.html Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Modeling Parameters and Assumptions 34 4.0 Modeling Parameters and Assumptions 4.1 Construction Typical emission rates from construction activities were obtained from CalEEMod Version 2020.4.0 CalEEMod is a computer model published by the SCAQMD for estimating air pollutant emissions. The CalEEMod program uses the EMFAC2017 computer program to calculate the emission rates specific for the southwestern portion of Riverside County for construction-related employee vehicle trips and the OFFROAD2011 computer program to calculate emission rates for heavy truck operations. EMFAC2017 and OFFROAD2011 are computer programs generated by CARB that calculates composite emission rates for vehicles. Emission rates are reported by the program in grams per trip and grams per mile or grams per running hour. Using CalEEMod, the peak daily air pollutant emissions were calculated and presented below. These emissions represent the highest level of emissions for each of the construction phases in terms of air pollutant emissions. The analysis assesses the emissions associated with the construction of the proposed project as indicated in Table 1. Per the project owner, the proposed project is to be operational in 2023; therefore, construction is estimated to start no sooner than the first quarter of 2022 and be completed by 2023. The phases of the construction activities which have been analyzed below are: 1) site preparation, 2) grading, 3) building, 4) paving, and 5) architectural coating. For details on construction modeling and construction equipment for each phase, please see Appendix A. The project will be required to comply with existing SCAQMD rules for the reduction of fugitive dust emissions. SCAQMD Rule 403 establishes these procedures. Compliance with this rule is achieved through application of standard best management practices in construction and operation activities, such as application of water or chemical stabilizers to disturbed soils, managing haul road dust by application of water, covering haul vehicles, restricting vehicle speeds on unpaved roads to 15 mph, sweeping loose dirt from paved site access roadways, cessation of construction activity when winds exceed 25 mph and establishing a permanent, stabilizing ground cover on finished sites. In addition, projects that disturb 50 acres or more of soil or move 5,000 cubic yards of materials per day are required to submit a Fugitive Dust Control Plan or a Large Operation Notification Form to SCAQMD. Based on the size of the Project area (approximately 3 acres) and the fact that the project won’t export more than 5,000 cubic yards of material a day a Fugitive Dust Control Plan or Large Operation Notification would not be required. SCAQMD’s Rule 403 minimum requirements require that the application of the best available dust control measures are used for all grading operations and include the application of water or other soil stabilizers in sufficient quantity to prevent the generation of visible dust plumes. Compliance with Rule 403 would require the use of water trucks during all phases where earth moving operations would occur. Compliance with Rule 403 is required. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Modeling Parameters and Assumptions 35 4.2 Operations Operational or long-term emissions occur over the life of the Project. Both mobile and area sources generate operational emissions. Area source emissions arise from consumer product usage, heaters that consume natural gas, gasoline-powered landscape equipment, and architectural coatings (painting). Mobile source emissions from motor vehicles are the largest single long-term source of air pollutants from the operation of the Project. Small amounts of emissions would also occur from area sources such as the consumption of natural gas for heating, hearths, from landscaping emissions, and consumer product usage. The operational emissions were estimated using the latest version of CalEEMod. Mobile Sources Mobile sources include emissions from the additional vehicle miles generated from the proposed project. The vehicle trips associated with the proposed project are based upon the trip generation rates give in the Traffic Scoping Agreement (Integrated Engineering Group) which uses the Institute of Transportation Engineers (ITE) 10th Trip Generation Manual. The program then applies the emission factors for each trip which is provided by the EMFAC2017 model to determine the vehicular traffic pollutant emissions. The CalEEMod default trip lengths were used in this analysis. Please see CalEEMod output comments sections in Appendix A and B for details. Area Sources Area sources include emissions from consumer products, landscape equipment and architectural coatings. Landscape maintenance includes fuel combustion emissions from equipment such as lawn mowers, rototillers, shredders/grinders, blowers, trimmers, chain saws, and hedge trimmers, as well as air compressors, generators, and pumps. As specifics were not known about the landscaping equipment fleet, CalEEMod defaults were used to estimate emissions from landscaping equipment. Per SCAQMD Rule 1113 as amended on June 3, 2011, the architectural coatings that would be applied after January 1, 2014 will be limited to an average of 50 grams per liter or less for buildings and 100 grams per liter or less for parking lot striping; however, no changes were made to the CalEEMod architectural coating default values. Energy Usage 2020.4.0 CalEEMod defaults were utilized. 4.3 Localized Construction Analysis The SCAQMD has published a “Fact Sheet for Applying CalEEMod to Localized Significance Thresholds” (South Coast Air Quality Management District 2011b). CalEEMod calculates construction emissions based on the number of equipment hours and the maximum daily disturbance activity possible for each piece of equipment. In order to compare CalEEMod reported emissions against the localized significance threshold lookup tables, the CEQA document should contain in its project design features or its mitigation measures the following parameters: Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Modeling Parameters and Assumptions 36 1. The off-road equipment list (including type of equipment, horsepower, and hours of operation) assumed for the day of construction activity with maximum emissions. 2. The maximum number of acres disturbed on the peak day. 3. Any emission control devices added onto off-road equipment. 4. Specific dust suppression techniques used on the day of construction activity with maximum emissions. The construction equipment showing the equipment associated with the maximum area of disturbance is shown in Table 7. Table 7: Construction Equipment Assumptions1 Activity Equipment Number Acres/8hr-day Total Acres Site Preparation Graders 1 0.5 0.5 Scrapers 1 0.5 0.5 Tractors/Loaders/Backhoes 1 0.5 0.5 Total Per Phase 1.5 Grading Graders 1 0.5 0.5 Rubber Tired Dozers 1 0.5 0.5 Tractors/Loaders/Backhoes 2 0.5 1.0 Total Per Phase 2.0 Notes: 1. Source: CalEEMod output and South Coast AQMD, Fact Sheet for Applying CalEEMod to Localized Significance Thresholds. http://www.aqmd.gov/docs/default-source/ceqa/handbook/localized-significance-thresholds/caleemod-guidance.pdf?sfvrsn=2 As shown in Table 7, the maximum number of acres disturbed in a day would be 2.0 acres during grading. The local air quality emissions from construction were analyzed using the SCAQMD’s Mass Rate Localized Significant Threshold Look-up Tables and the methodology described in Localized Significance Threshold Methodology, prepared by SCAQMD, revised July 2008. The Look-up Tables were developed by the SCAQMD in order to readily determine if the daily emissions of CO, NOx, PM10, and PM2.5 from the proposed project could result in a significant impact to the local air quality. The emission thresholds were based on the Coachella Valley source receptor area (SRA 30) and a disturbance of 2 acres per day at a distance of 25 meters (82 feet). 4.4 Localized Operational Analysis For operational emissions, the screening tables for a disturbance area of 2 acres per day and a distance of 25 meters were used to determine significance. The tables were compared to the project’s onsite operational emissions. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Thresholds of Significance 37 5.0 Thresholds of Significance 5.1 Air Quality Thresholds of Significance 5.1.1 CEQA Guidelines for Air Quality The CEQA Guidelines define a significant effect on the environment as “a substantial, or potentially substantial, adverse change in the environment.” To determine if a project would have a significant impact on air quality, the type, level, and impact of emissions generated by the project must be evaluated. The following air quality significance thresholds are contained in Appendix G of the CEQA Guidelines. A significant impact would occur if the project would: a) Conflict with or obstruct implementation of the applicable air quality plan; b) Result in a cumulatively considerable net increase of any criteria pollutant for which the project region is nonattainment under an applicable national or state ambient air quality standard; c) Expose sensitive receptors to substantial pollutant concentrations; or d) Result in other emissions (such as those leading to odors) adversely affecting a substantial number of people. While the final determination of whether a project is significant is within the purview of the Lead Agency pursuant to Section 15064(b) of the CEQA Guidelines, SCAQMD recommends that its quantitative air pollution thresholds be used to determine the significance of project emissions. If the Lead Agency finds that the project has the potential to exceed these air pollution thresholds, the project should be considered to have significant air quality impacts. There are daily emission thresholds for construction and operation of a proposed project in the basin. 5.1.2 Regional Significance Thresholds for Construction Emissions The following CEQA significance thresholds for construction emissions are established for the Basin: x 75 pounds per day (lbs/day) of VOC x 100 lbs/day of NOx x 550 lbs/day of CO x 150 lbs/day of PM10 x 55 lbs/day of PM2.5 x 150 lbs/day of SO2 Projects in the basin with construction-related emissions that exceed any of the emission thresholds are considered to be significant under SCAQMD guidelines. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Thresholds of Significance 38 5.1.3 Regional Significance Thresholds for Operational Emissions The daily operational emissions significance thresholds for the basin are as follows: x 55 pounds per day (lbs/day) of VOC x 55 lbs/day of NOx x 550 lbs/day of CO x 150 lbs/day of PM10 x 55 lbs/day of PM2.5 x 150 lbs/day of SO2 Local Microscale Concentration Standards The significance of localized project impacts under CEQA depends on whether ambient CO levels in the vicinity of the project are above or below State and federal CO standards. If ambient levels are below the standards, a project is considered to have a significant impact if project emissions result in an exceedance of one or more of these standards. If ambient levels already exceed a State or federal standard, project emissions are considered significant if they increase 1-hour CO concentrations by 1.0 ppm or more or 8-hour CO concentrations by 0.45 ppm or more. The following are applicable local emission concentration standards for CO: x California State 1-hour CO standard of 20.0 ppm x California State 8-hour CO standard of 9.0 ppm 5.1.4 Thresholds for Localized Significance Project-related construction air emissions may have the potential to exceed the State and Federal air quality standards in the project vicinity, even though these pollutant emissions may not be significant enough to create a regional impact to the Salton Sea Air Basin. In order to assess local air quality impacts the SCAQMD has developed Localized Significant Thresholds (LSTs) to assess the project- related air emissions in the project vicinity. The SCAQMD has also provided Final Localized Significant Threshold Methodology (LST Methodology), June 2003, which details the methodology to analyze local air emission impacts. The Localized Significant Threshold Methodology found that the primary emissions of concern are NO2, CO, PM10, and PM2.5. The emission thresholds were calculated based on the Coachella Valley source receptor area (SRA 30) and a disturbance of 2 acres per day at a distance of 25 meters (82 feet), for construction and 2 acres a day for screening of localized operational emissions. 5.2 Greenhouse Gas Thresholds of Significance 5.2.1 CEQA Guidelines for Greenhouse Gas CEQA Guidelines define a significant effect on the environment as “a substantial, or potentially substantial, adverse change in the environment.” To determine if a project would have a significant impact on greenhouse gases, the type, level, and impact of emissions generated by the project must be evaluated. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Thresholds of Significance 39 The following greenhouse gas significance thresholds are contained in Appendix G of the CEQA Guidelines, which were amendments adopted into the Guidelines on March 18, 2010, pursuant to SB 97. A significant impact would occur if the project would: (a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment; or (b) Conflict with any applicable plan, policy or regulation of an agency adopted for the purpose of reducing the emissions of greenhouse gases. However, despite this, currently neither the CEQA statutes, OPR guidelines, nor the draft proposed changes to the CEQA Guidelines prescribe thresholds of significance or a particular methodology for performing an impact analysis; as with most environmental topics, significance criteria are left to the judgment and discretion of the Lead Agency. As previously discussed (Section 2.2.4 of this report), SCAQMD has drafted interim GHG thresholds and the County of Riverside CAP Update has adopted a GHG threshold. The County of Riverside CAP Update screening threshold of 3,000 metric tons per year of CO2e was used in this analysis. 5.3 Toxic Air Contaminants The threshold for toxic air contaminants (TACs) has a maximum incremental cancer risk of 10 per million and a non-cancer (acute and chronic) hazard index of 1.0 or greater. An exceedance to these values would be considered a significant impact. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Air Quality Emissions Impact 40 6.0 Air Quality Emissions Impact 6.1 Construction Air Quality Emissions Impact The latest version of CalEEMod was used to estimate the onsite and offsite construction emissions. The emissions incorporate Rule 402 and 403. Rule 402 and 403 (fugitive dust) are not considered mitigation measures as the project by default is required to incorporate these rules during construction. 6.1.1 Regional Construction Emissions The construction emissions for the project would not exceed the SCAQMD’s daily emission thresholds at the regional level as demonstrated in Table 8, and therefore impacts would be considered less than significant. Table 8: Regional Significance - Construction Emissions (pounds/day)1 Pollutant Emissions (pounds/day) Activity VOC NOx CO SO2 PM10 PM2.5 Site Preparation On-Site2 1.38 15.67 10.06 0.02 1.22 0.61 Off-Site3 0.03 0.02 0.25 0.00 0.07 0.02 Total 1.41 15.68 10.30 0.03 1.28 0.63 Grading On-Site2 1.54 16.98 9.22 0.02 3.50 2.02 Off-Site3 0.03 0.21 0.31 0.00 0.08 0.02 Total 1.57 17.19 9.53 0.02 3.59 2.04 Building Construction On-Site2 1.86 14.60 14.35 0.03 0.70 0.67 Off-Site3 0.78 2.33 7.13 0.02 2.02 0.57 Total 2.63 16.93 21.49 0.05 2.73 1.24 Paving On-Site2 1.20 9.33 11.70 0.02 0.49 0.45 Off-Site3 0.05 0.03 0.47 0.00 0.13 0.03 Total 1.25 9.36 12.16 0.02 0.61 0.48 Architectural Coating On-Site2 60.26 1.41 1.81 0.00 0.08 0.08 Off-Site3 0.14 0.09 1.30 0.00 0.35 0.09 Total 60.41 1.50 3.12 0.01 0.43 0.18 Total of overlapping phases4 64.29 27.79 36.77 0.07 3.78 1.90 SCAQMD Thresholds 75 100 550 150 150 55 Exceeds Thresholds No No No No No No Notes: 1 Source: CalEEMod Version 2020.4.0 2 On-site emissions from equipment operated on-site that is not operated on public roads. 3 Off-site emissions from equipment operated on public roads. 4 Construction, architectural coatings and paving phases may overlap. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Air Quality Emissions Impact 41 6.1.2 Localized Construction Emissions The data provided in Table 9 shows that none of the analyzed criteria pollutants would exceed the local emissions thresholds at the nearest sensitive receptors. Therefore, a less than significant local air quality impact would occur from construction of the proposed project. Table 9: Localized Significance – Construction Phase On-Site Pollutant Emissions (pounds/day)1 NOx CO PM10 PM2.5 Site Preparation 15.67 10.06 1.22 0.61 Grading 16.98 9.22 3.50 2.02 Building Construction 14.60 14.35 0.70 0.67 Paving 9.33 11.70 0.49 0.45 Architectural Coating 1.41 1.81 0.08 0.08 Total of overlapping phases 25.34 27.86 1.27 1.20 SCAQMD Threshold for 25 meters (82 feet) or less2 191 1,299 7 5 Notes: 1 Source: Calculated from CalEEMod and SCAQMD’s Mass Rate Look-up Tables for two acres in Coachella Valley Source Receptor Area (SRA 30). Project will disturb a maximum of 2.0 acres per day (see Table 7). 2 The nearest sensitive receptor is located 35 meters east; therefore, the 25-meter threshold has been used. 6.1.3 Construction-Related Human Health Impacts Regarding health effects related to criteria pollutant emissions, the applicable significance thresholds are established for regional compliance with the state and federal ambient air quality standards, which are intended to protect public health from both acute and long-term health impacts, depending on the potential effects of the pollutant. Because regional and local emissions of criteria pollutants during construction of the project would be below the applicable thresholds, it would not contribute to long- term health impacts related to nonattainment of the ambient air quality standards. Therefore, significant adverse acute health impacts as a result of project construction are not anticipated. 6.1.4 Odors Potential sources that may emit odors during construction activities include the application of materials such as asphalt pavement. The objectionable odors that may be produced during the construction process are of short-term in nature and the odor emissions are expected cease upon the drying or hardening of the odor producing materials. Diesel exhaust and VOCs would be emitted during construction of the project, which are objectionable to some; however, emissions would disperse rapidly from the project site and therefore should not reach an objectionable level at the nearest sensitive receptors. Due to the short-term nature and limited amounts of odor producing materials being utilized, no significant impact related to odors would occur during construction of the proposed project. The SCAQMD recommends that odor impacts be addressed in a qualitative manner. Such an analysis shall determine whether the project would result in excessive nuisance odors, as defined under the Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Air Quality Emissions Impact 42 California Code of Regulations and Section 41700 of the California Health and Safety Code, and thus would constitute a public nuisance related to air quality. Potential sources that may emit odors during the on -going operations of the proposed project would include odor emissions from vehicle emissions. Due to the distance of the nearest receptors from the project site and through compliance with SCAQMD’s Rule 402 no significant impact related to odors would occur during the on-going operations of the proposed project. 6.1.5 Construction-Related Toxic Air Contaminant Impact The greatest potential for toxic air contaminant emissions would be related to diesel particulate emissions associated with heavy equipment operations during construction of the proposed project. The Office of Environmental Health Hazard Assessment (OEHHA) has issued the Air Toxic Hot Spots Program Risk Assessment Guidelines and Guidance Manual for the Preparation of Health Risk Assessments, February 2015 to provide a description of the algorithms, recommended exposure variates, cancer and noncancer health values, and the air modeling protocols needed to perform a health risk assessment (HRA) under the Air Toxics Hot Spots Information and Assessment Act of 1987. Hazard identification includes identifying all substances that are evaluated for cancer risk and/or non- cancer acute, 8-hour, and chronic health impacts. In addition, identifying any multi-pathway substances that present a cancer risk or chronic non-cancer hazard via non-inhalation routes of exposure. Given the relatively limited number of heavy-duty construction equipment and construction schedule, the proposed project would not result in a long-term substantial source of toxic air containment emissions and corresponding individual cancer risk. Furthermore, construction-based particulate matter (PM) emissions (including diesel exhaust emissions) do not exceed any local or regional thresholds. Therefore, no significant short-term toxic air contaminant impacts would occur during construction of the proposed project. 6.2 Operational Air Quality Emissions Impact 6.2.1 Regional Operational Emissions The operations-related criteria air quality impacts created by the proposed project have been analyzed through the use of CalEEMod model. The operating emissions were based on year 2023, which is the anticipated opening year for the project per the Traffic Scoping Agreement (Integrated Engineering Group). The summer and winter emissions created by the proposed project’s long-term operations were calculated and the highest emissions from either summer or winter are summarized in Table 10. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Air Quality Emissions Impact 43 Table 10: Regional Significance - Unmitigated Operational Emissions (lbs/day) Activity Pollutant Emissions (pounds/day)1 VOC NOx CO SO2 PM10 PM2.5 Area Sources2 4.48 0.17 14.56 0.00 0.08 0.08 Energy Usage3 0.07 0.64 0.27 0.00 0.05 0.05 Mobile Sources4 5.33 6.00 43.37 0.09 9.10 2.48 Total Emissions 9.88 6.81 58.19 0.10 9.23 2.61 SCAQMD Thresholds 55 55 550 150 150 55 Exceeds Threshold? No No No No No No Notes: 1 Source: CalEEMod Version 2020.4.0 2 Area sources consist of emissions from consumer products, architectural coatings, and landscaping equipment. 3 Energy usage consists of emissions from on-site natural gas usage. 4 Mobile sources consist of emissions from vehicles and road dust. Table 10 provides the project's unmitigated operational emissions. Table 10 shows that the project does not exceed the SCAQMD daily emission threshold and regional operational emissions are considered to be less than significant. 6.2.2 Localized Operational Emissions Table 11 shows the calculated emissions for the proposed operational activities compared with appropriate LSTs. The LST analysis only includes on-site sources; however, the CalEEMod software outputs do not separate on-site and off-site emissions for mobile sources. For a worst-case scenario assessment, the emissions shown in Table 11 include all on-site project-related stationary sources and 10% of the project-related new mobile sources.3 This percentage is an estimate of the amount of project-related new vehicle traffic that will occur on-site. <Table 11, next page> 3 The project site is approximately 0.25 miles in length at its longest point; therefore the on-site mobile source emissions represent approximately 1/27th of the shortest CalEEMod default distance of 6.9 miles. Therefore, to be conservative, 1/10th the distance (dividing the mobile source emissions by 10) was used to represent the portion of the overall mobile source emissions that would occur on-site. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Air Quality Emissions Impact 44 Table 11: Localized Significance – Unmitigated Operational Emissions On-Site Emission Source On-Site Pollutant Emissions (pounds/day)1 NOx CO PM10 PM2.5 Area Sources2 0.17 14.56 0.08 0.08 Energy Usage3 0.64 0.27 0.05 0.05 On-Site Vehicle Emissions4 0.60 4.34 0.91 0.25 Total Emissions 1.41 19.17 1.04 0.38 SCAQMD Threshold for 25 meters (82 feet)5 191 1,299 2 2 Exceeds Threshold? No No No No Notes: 1 Source: Calculated from CalEEMod and SCAQMD’s Mass Rate Look-up Tables for two acres in Coachella Valley Source Receptor Area (SRA 30). 2 Area sources consist of emissions from consumer products, architectural coatings, and landscaping equipment. 3 Energy usage consists of emissions from generation of electricity and on-site natural gas usage. 4 On-site vehicular emissions based on 1/10 of the gross vehicular emissions and road dust. 5 The nearest sensitive receptor is located 35 meters east; therefore, the 25-meter threshold has been used. Table 11 indicates that the local operational emission would not exceed the LST thresholds at the nearest sensitive receptors, located adjacent to the project. Therefore, the project will not result in significant Localized Operational emissions. 6.2.3 Operations-Related Human Health Impacts As stated previously, regarding health effects related to criteria pollutant emissions, the applicable significance thresholds are established for regional compliance with the state and federal ambient air quality standards, which are intended to protect public health from both acute and long-term health impacts, depending on the potential effects of the pollutant. Because regional and local emissions of criteria pollutants during operation of the project would be below the applicable thresholds, it would not contribute to long-term health impacts related to nonattainment of the ambient air quality standards. Therefore, significant adverse acute health impacts as a result of project operation are not anticipated. 6.3 CO Hot Spot Emissions CO is the pollutant of major concern along roadways because the most notable source of CO is motor vehicles. For this reason, CO concentrations are usually indicative of the local air quality generated by a roadway network and are used as an indicator of potential local air quality impacts. Local air quality impacts can be assessed by comparing future without and with project CO levels to the State and Federal CO standards which were presented in above in Section 5.0. To determine if the proposed project could cause emission levels in excess of the CO standards discussed above in Section 5.0, a sensitivity analysis is typically conducted to determine the potential for CO “hot spots” at a number of intersections in the general project vicinity. Because of reduced speeds and vehicle queuing, “hot spots” potentially can occur at high traffic volume intersections with a Level of Service E or worse. Level of Service (LOS) is a qualitative measure used to relate the quality of motor vehicle traffic service. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Air Quality Emissions Impact 45 Micro-scale air quality emissions have traditionally been analyzed in environmental documents where the air basin was a non-attainment area for CO. However, the SCAQMD has demonstrated in the CO attainment redesignation request to EPA that there are no “hot spots” anywhere in the air basin, even at intersections with much higher volumes, much worse congestion, and much higher background CO levels than anywhere in Riverside County. If the worst-case intersections in the air basin have no “hot spot” potential, any local impacts will be below thresholds. Trip generation analysis from Integrated Engineering Group showed that the project would generate 1,800 average daily trips (ADT). The 1992 Federal Attainment Plan for Carbon Monoxide (1992 CO Plan) showed that an intersection which has a daily traffic volume of approximately 100,000 vehicles per day would not violate the CO standard. The volume of traffic at project buildout would be well below 100,000 vehicles and below the necessary volume to even get close to causing a violation of the CO standard. Therefore, no CO “hot spot” modeling was performed and no significant long-term air quality impact is anticipated to local air quality with the on-going use of the proposed project. 6.4 Cumulative Regional Air Quality Impacts Cumulative projects include local development as well as general growth within the project area. However, as with most development, the greatest source of emissions is from mobile sources, which travel well out of the local area. Therefore, from an air quality standpoint, the cumulative analysis would extend beyond any local projects and when wind patterns are considered, would cover an even larger area. Accordingly, the cumulative analysis for the project’s air quality must be generic by nature. The project area is in non-attainment for both ozone and PM10 particulate matter. Construction and operation of cumulative projects will further degrade the local air quality, as well as the air quality of the Salton Sea Air Basin. The greatest cumulative impact on the quality of regional air cell will be the incremental addition of pollutants mainly from increased traffic from residential, commercial, and industrial development and the use of heavy equipment and trucks associated with the construction of these projects. Air quality will be temporarily degraded during construction activities that occur separately or simultaneously. However, in accordance with the SCAQMD methodology, projects that do not exceed the SCAQMD criteria or can be mitigated to less than criteria levels are not significant and do not add to the overall cumulative impact. The project does not exceed any of the thresholds of significance and therefore is not considered to contribute to a significant cumulative impact on air quality. 6.5 Air Quality Compliance The California Environmental Quality Act (CEQA) requires a discussion of any inconsistencies between a proposed project and applicable General Plans and Regional Plans (CEQA Guidelines Section 15125). The regional plan that applies to the proposed project includes the SCAQMD Air Quality Management Plan (AQMP). Therefore, this section discusses any potential inconsistencies of the proposed project with the AQMP. The purpose of this discussion is to set forth the issues regarding consistency with the assumptions and objectives of the AQMP and discuss whether the proposed project would interfere with the region’s Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Air Quality Emissions Impact 46 ability to comply with Federal and State air quality standards. If the decision-makers determine that the proposed project is inconsistent, the lead agency may consider project modifications or inclusion of mitigation to eliminate the inconsistency. The SCAQMD CEQA Handbook states that "New or amended General Plan Elements (including land use zoning and density amendments), Specific Plans, and significant projects must be analyzed for consistency with the AQMP." Strict consistency with all aspects of the plan is usually not required A proposed project should be considered to be consistent with the AQMP if it furthers one or more policies and does not obstruct other policies. The SCAQMD CEQA Handbook identifies two key indicators of consistency: (1) Whether the project will result in an increase in the frequency or severity of existing air quality violations or cause or contribute to new violations, or delay timely attainment of air quality standards or the interim emission reductions specified in the AQMP. (2) Whether the project will exceed the assumptions in the AQMP in 2016 or increments based on the year of project buildout and phase. Both of these criteria are evaluated in the following sections. A. Criterion 1 - Increase in the Frequency or Severity of Violations Based on the air quality modeling analysis contained in this Air Analysis, short-term construction impacts will not result in significant impacts based on the SCAQMD regional and local thresholds of significance. This Air Analysis also found that, long-term operations impacts will not result in significant impacts based on the SCAQMD local and regional thresholds of significance. Therefore, the proposed project is not projected to contribute to the exceedance of any air pollutant concentration standards and is found to be consistent with the AQMP for the first criterion. B. Criterion 2 - Exceed Assumptions in the AQMP? Consistency with the AQMP assumptions is determined by performing an analysis of the proposed project with the assumptions in the AQMP. The emphasis of this criterion is to ensure that the analyses conducted for the proposed project are based on the same forecasts as the AQMP. The 2016- 2040 Regional Transportation/Sustainable Communities Strategy, prepared by SCAG, 2016, includes chapters on: the challenges in a changing region, creating a plan for our future, and the road to greater mobility and sustainable growth. These chapters currently respond directly to federal and state requirements placed on SCAG. Local governments are required to use these as the basis of their plans for purposes of consistency with applicable regional plans under CEQA. For this project, the City of Palm Desert General Plan defines the assumptions that are represented in the AQMP. The proposed project has a current land use classification of Planned Residential according to the City of Palm Desert Zoning Map. The proposed project is to develop the site with a 176-unit apartment complex. Therefore, the proposed project would not result in an inconsistency with the land use designation in the City’s General Plan. Therefore, the proposed project is not anticipated to exceed the Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Air Quality Emissions Impact 47 AQMP assumptions for the project site and is found to be consistent with the AQMP for the second criterion. Based on the above, the proposed project will not result in an inconsistency with the SCAQMD AQMP. Therefore, a less than significant impact will occur. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Greenhouse Gas Impact Analysis 48 7.0 Greenhouse Gas Impact Analysis 7.1 Construction Greenhouse Gas Emissions Impact The greenhouse gas emissions from project construction equipment and worker vehicles are shown in Table 12. The emissions are from all phases of construction. The total construction emissions amortized over a period of 30 years are estimated at 16.06 metric tons of CO2e per year. Annual CalEEMod output calculations are provided in Appendix B. Table 12: Construction Greenhouse Gas Emissions Activity Emissions (MTCO2e)1 Onsite Offsite Total Site Preparation 0.0793 3.2582 3.34 Grading 5.47 0.20 5.67 Building Construction 229.55 232.18 461.73 Paving 7.82 0.50 8.31 Coating 1.28 1.35 2.63 Total 244.20 237.48 481.68 Averaged over 30 years 2 8.14 7.92 16.06 Notes: 1. MTCO2e=metric tons of carbon dioxide equivalents (includes carbon dioxide, methane and nitrous oxide). 2. The emissions are averaged over 30 years because the average is added to the operational emissions, pursuant to SCAQMD. * CalEEMod output (Appendix B) 7.2 Operational Greenhouse Gas Emissions Impact Operational emissions occur over the life of the project. The operational emissions for the project are 1,878.54 metric tons of CO2e per year (see Table 13). Furthermore, as shown in Table 13, the project’s total emissions (with incorporation of construction related GHG emissions) would be 1,894.60 metric tons of CO2e per year. These emissions do not exceed the County of Riverside CAP Update and SCAQMD screening threshold of 3,000 metric tons of CO2e per year. Therefore, the project's GHG emissions are considered to be less than significant. <Table 13 next page> Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Greenhouse Gas Impact Analysis 49 Table 13: Opening Year Unmitigated Project-Related Greenhouse Gas Emissions Category Greenhouse Gas Emissions (Metric Tons/Year)1 Bio-CO2 NonBio-CO2 CO2 CH4 N2O CO2e Area Sources2 0.00 2.14 2.14 0.00 0.00 2.19 Energy Usage3 0.00 266.87 266.87 0.01 0.00 268.36 Mobile Sources4 0.00 1,484.68 1,484.68 0.09 0.08 1,510.73 Solid Waste5 16.43 0.00 16.43 0.97 0.00 40.71 Water6 3.64 40.72 44.36 0.38 0.01 56.54 Construction7 0.00 15.76 15.76 0.00 0.00 16.06 Total Emissions 20.07 1,810.19 1,830.26 1.46 0.09 1,894.60 County of Riverside CAP and SCAQMD Draft Screening Threshold 3,000 Exceeds Threshold? No Notes: 1 Source: CalEEMod Version 2020.4.0 2 Area sources consist of GHG emissions from consumer products, architectural coatings, and landscape equipment. 3 Energy usage consist of GHG emissions from electricity and natural gas usage. 4 Mobile sources consist of GHG emissions from vehicles. 5 Solid waste includes the CO2 and CH4 emissions created from the solid waste placed in landfills. 6 Water includes GHG emissions from electricity used for transport of water and processing of wastewater. 7 Construction GHG emissions based on a 30 year amortization rate. 7.3 Greenhouse Gas Plan Consistency The proposed project would have the potential to conflict with any applicable plan, policy or regulation of an agency adopted for the purpose of reducing the emissions of GHGs. As stated previously, the County of Riverside has adopted a Climate Action Plan; therefore, the project and its GHG emissions have been compared to the goals of the County of Riverside CAP Update. Consistency with the County of Riverside CAP Update Per the County’s CAP Update, the County adopted its first CAP in 2015 which set a target to reduce emissions back to 1990 levels by the year 2020 as recommended in the AB 32 Scoping Plan. Furthermore, the goals and supporting measures within the County’s CAP Update are proposed to reflect and ensure compliance with changes in the local and State policies and regulations such as SB 32 and California’s 2017 Climate Change Scoping Plan. Therefore, compliance with the County’s CAP in turn reflects consistency with the goals of the CARB Scoping Plan, Assembly Bill (AB) 32 and Senate Bill (SB) 32. Appendix D of the Riverside County CAP Update also states that project's that do not exceed the CAP's screening threshold of 3,000 MTCO2e per year are considered to have less than significant GHG emissions and are in compliance with the County's CAP Update. According to the County's CAP Update, projects that do not exceed emissions of 3,000 MTCO2e per year are also required to include the following efficiency measures: x Energy efficiency matching or exceeding the Title 24 requirements in effect as of January 2017, and Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Greenhouse Gas Impact Analysis 50 x Water conservation measures that match the California Green Building Code in effect as of January 2017. As stated above, the GHG emissions generated by the proposed project would not exceed the County of Riverside CAP Update screening threshold of 3,000 metric tons per year of CO2e. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Energy Analysis 51 8.0 Energy Analysis Information from the CalEEMod 2020.4.0 Daily and Annual Outputs contained in the air quality and greenhouse gas analyses above was utilized for this analysis. The CalEEMod outputs detail project related construction equipment, transportation energy demands, and facility energy demands. 8.1 Construction Energy Demand 8.1.1 Construction Equipment Electricity Usage Estimates Electrical service will be provided by Southern California Edison (SCE). Based on the 2017 National Construction Estimator, Richard Pray (2017)4, the typical power cost per 1,000 square feet of building construction per month is estimated to be $2.32. The project plans to develop the site with 331,000 square feet of new single-family houses over the course of approximately 12 months. Based on Table 14, the total power cost of the on-site electricity usage during the construction of the proposed project is estimated to be approximately $4,899.84. As shown in Table 14, the total electricity usage from Project construction related activities is estimated to be approximately 89,088 kilowatt-hours (kWh).5 Table 14: Project Construction Power Cost and Electricity Usage Power Cost (per 1,000 square foot of building per month of construction) Total Building Size (1,000 Square Foot)1 Construction Duration (months) Total Project Construction Power Cost $2.32 176 12 $4,899.84 Cost per kWh Total Project Construction Electricity Usage (kWh) $0.06 89,088 * Assumes the project will be under the GS-1 General Service rate under SCE. 4 Pray, Richard. 2017 National Construction Estimator. Carlsbad: Craftsman Book Company, 2017. 5 LADWP’s Small Commercial & Multi-Family Service (A-1) is approximately $0.06 per kWh of electricity Southern California Edison (SCE). Rates & Pricing Choices: General Service/Industrial Rates. https://library.sce.com/content/dam/sce- doclib/public/regulatory/historical/electric/2020/schedules/general-service-&-industrial-rates/ELECTRIC_SCHEDULES_GS-1_2020.pdf Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Energy Analysis 52 8.1.2 Construction Equipment Fuel Estimates Using the CalEEMod data input, the project’s construction phase would consume electricity and fossil fuels as a single energy demand, that is, once construction is completed their use would cease. CARB’s 2017 Emissions Factors Tables show that on average aggregate fuel consumption (gasoline and diesel fuel) would be approximately 18.5 horsepower-hour-gallons (hp-hr-gal).6 As presented in Table 15 below, project construction activities would consume an estimated 25,766 gallons of diesel fuel. Table 15: Construction Equipment Fuel Consumption Estimates Phase Number of Days Offroad Equipment Type Amount Usage Hours Horse Power Load Factor HP hrs/ day Total Fuel Consumption (gal diesel fuel)1,2 Site Preparation 3 Graders 1 8 187 0.41 613 99.46 3 Scrapers 1 8 367 0.48 1,409 228.53 3 Tractors/Loaders/Backhoes 1 7 97 0.37 251 40.74 Grading 6 Graders 1 8 187 0.41 613 198.93 6 Rubber Tired Dozers 1 8 247 0.4 790 256.35 6 Tractors/Loaders/Backhoes 2 8 97 0.37 574 186.24 Building Construction 220 Cranes 1 7 231 0.29 469 5,576.46 220 Forklifts 2 8 89 0.2 285 3,386.81 220 Generator Sets 1 8 84 0.74 497 5,913.60 220 Tractors/Loaders/Backhoes 1 7 97 0.37 251 2,987.60 220 Welders 3 8 46 0.45 497 5,907.89 Paving 10 Cement and Mortar Mixers 1 8 9 0.56 40 21.79 10 Pavers 1 8 130 0.42 437 236.11 10 Paving Equipment 1 8 132 0.36 380 205.49 10 Rollers 2 8 80 0.38 486 262.92 10 Tractors/Loaders/Backhoes 1 7 97 0.37 251 135.80 Architectural Coating 10 Air Compressors 1 6 78 0.48 225 121.43 CONSTRUCTION FUEL DEMAND (gallons of diesel fuel) 25,766 Notes: 1Using Carl Moyer Guidelines Table D-21 Fuel consumption rate factors (bhp-hr/gal) for engines less than 750 hp. (Source: https://www.arb.ca.gov/msprog/moyer/guidelines/2017gl/2017_gl_appendix_d.pdf) 2Discrepancies are due to rounding. 6 Aggregate fuel consumption rate for all equipment was estimated at 18.5 hp-hr/day (from CARB’s 2017 Emissions Factors Tables and fuel consumption rate factors as shown in Table D-21 of the Moyer Guidelines: (https://www.arb.ca.gov/msprog/moyer/guidelines/2017gl/2017_gl_appendix_d.pdf ). Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Energy Analysis 53 8.1.3 Construction Worker Fuel Estimates It is assumed that all construction worker trips are from light duty autos (LDA) along area roadways. With respect to estimated vehicle miles traveled (VMT), the construction worker trips would generate an estimated 236,670 VMT, or would travel a combined 236,670 miles over the duration of the construction of the project. Vehicle fuel efficiencies for construction workers were estimated in the air quality and greenhouse gas analysis using information generated using CARB’s EMFAC model (see Appendix C for details). Table 16 shows that an estimated 16,496 gallons of fuel would be consumed for construction worker trips. Table 16: Construction Worker Fuel Consumption Estimates Phase Number of Days Worker Trips/Day Trip Length (miles)1 Vehicle Miles Traveled (VMT) Average Vehicle Fuel Economy (mpg) Estimated Fuel Consumption (gallons)2 Site Preparation 3 8 11 264 30.95 9 Grading 6 10 11 660 30.95 21 Building Construction 220 208 11 503,360 30.95 16,264 Paving 10 15 11 1,650 30.95 53 Architectural Coating 10 42 11 4,620 30.95 149 Total Construction Worker Fuel Consumption 16,496 Notes: 1Assumptions for the worker trip length and vehicle miles traveled are consistent with CalEEMod 2020.4.0 defaults. See Appendix A for complete CalEEMod outputs. 2Discrepancies are due to rounding. 8.1.4 Construction Vendor/Hauling Fuel Estimates Tables 17 and 18 show the estimated fuel consumption for vendor and hauling during building construction and architectural coating. With respect to estimated VMT, the vendor trips would generate an estimated 59,400 VMT. No hauling trips are anticipated as there is no demolition and the site is anticipated to balance for grading. For the architectural coatings it is assumed that the contractors would be responsible for bringing coatings and equipment with them in their light duty vehicles.7 Table 17 shows that an estimated 6,443 gallons of fuel would be consumed for vendor trips, and Table 18 shows no fuel would be consumed due to hauling. <Tables 17 & 18, next page> 7 Vendors delivering construction material or hauling debris from the site during grading would use medium to heavy duty vehicles with an average fuel consumption of 9.22 mpg for medium heavy-duty trucks and 6.74 mpg for heavy heavy-duty trucks (see Appendix C for details). Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Energy Analysis 54 Table 17: Construction Vendor Fuel Consumption Estimates (MHD Trucks)1 Phase Number of Days Vendor Trips/Day Trip Length (miles) Vehicle Miles Traveled Average Vehicle Fuel Economy (mpg) Estimated Fuel Consumption (gallons) Site Preparation 3 0 5.4 0 9.22 0 Grading 6 0 5.4 0 9.22 0 Building Construction 220 50 5.4 59,400 9.22 6,443 Paving 10 0 5.4 0 9.22 0 Architectural Coating 10 0 5.4 0 9.22 0 Total Vendor Fuel Consumption 6,443 Notes: 1 Assumptions for the vendor trip length and vehicle miles traveled are consistent with CalEEMod 2020.4.0 defaults. See Appendix A for complete CalEEMod outputs. Table 18: Construction Hauling Fuel Consumption Estimates (HHD Trucks)1 Phase Number of Days Hauling Trips/Day Trip Length (miles) Vehicle Miles Traveled Average Vehicle Fuel Economy (mpg) Estimated Fuel Consumption (gallons) Site Preparation 8 0 20 0 6.74 0 Grading 10 0 20 0 6.74 0 Building Construction 208 0 20 0 6.74 0 Paving 15 0 20 0 6.74 0 Architectural Coating 42 0 20 0 6.74 0 Total Construction Hauling Fuel Consumption 0 Notes: 1Assumptions for the hauling trip length and vehicle miles traveled are consistent with CalEEMod 2020.40 defaults. See Appendix A for complete CalEEMod outputs. 8.1.5 Construction Energy Efficiency/Conservation Measures Construction equipment used over the approximately 17-month construction phase would conform to CARB regulations and California emissions standards and is evidence of related fuel efficiencies. In addition, the CARB Airborne Toxic Control Measure limits idling times of construction vehicles to no more than five minutes, thereby minimizing unnecessary and wasteful consumption of fuel due to unproductive idling of construction equipment. Furthermore, the project has been designed in compliance with California’s Energy Efficiency Standards and 2019 CALGreen Standards. Construction of the proposed residential development would require the typical use of energy resources. There are no unusual project characteristics or construction processes that would require the use of equipment that would be more energy intensive than is used for comparable activities; or equipment that would not conform to current emissions standards (and related fuel efficiencies). Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Energy Analysis 55 Equipment employed in construction of the project would therefore not result in inefficient wasteful, or unnecessary consumption of fuel. Based on this, the project would be less than significant and would not require mitigation measures during construction. 8.2 Operational Energy Demand Energy consumption in support of or related to project operations would include transportation energy demands (energy consumed by employee and patron vehicles accessing the project site) and facilities energy demands (energy consumed by building operations and site maintenance activities). 8.2.1 Transportation Fuel Consumption The largest source of operational energy use would be vehicle operation of customers. The site is located in an urbanized area just in close proximity to transit stops. Using the CalEEMod output, it is assumed that an average trip for autos were assumed to be 16.6 miles, light trucks were assumed to travel an average of 6.9 miles, and 3- 4-axle trucks were assumed to travel an average of 8.4 miles8. To show a worst-case analysis, as the proposed project is a residential project, it was assumed that vehicles would operate 365 days per year. Table 19 shows the worst-case estimated annual fuel consumption for all classes of vehicles from autos to heavy-heavy trucks.9 Table 19 shows that an estimated 313,580 gallons of fuel would be consumed per year for the operation of the proposed project. <Table 19, next page> 8 CalEEMod default distance for H-W (home-work) or C-W (commercial-work) is 16.6 miles; 6.9 miles for H-S (home-shop) or C-C (commercial-customer); and 8.4 miles for H-O (home-other) or C-O (commercial-other). 9 Average fuel economy based on aggregate mileage calculated in EMFAC 2017 for opening year (2023). See Appendix C for EMFAC output. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Energy Analysis 56 Table 19: Estimated Vehicle Operations Fuel Consumption Vehicle Type Vehicle Mix Number of Vehicles Average Trip (miles)1 Daily VMT Average Fuel Economy (mpg) Total Gallons per Day Total Annual Fuel Consumption (gallons) Light Auto Automobile 1,055 16.6 17,507 31.82 550.18 200,817 Light Truck Automobile 110 6.69 739 27.16 27.21 9,932 Light Truck Automobile 340 6.69 2,277 25.6 88.96 32,470 Medium Truck Automobile 278 6.69 1,860 20.81 89.38 32,625 Light Heavy Truck 2-Axle Truck 52 8.4 441 13.81 31.90 11,643 Light Heavy Truck 10,000 lbs + 2-Axle Truck 14 8.4 121 14.18 8.54 3,117 Medium Heavy Truck 3-Axle Truck 22 8.4 188 9.58 19.58 7,148 Heavy Heavy Truck 4-Axle Truck 37 8.4 310 7.14 43.36 15,828 Total 1,910 8.7838 23,442 18.76 859.12 -- Total Annual Fuel Consumption 313,580 Notes: '1 Per the trip generation assessment (Integrated Engineering Group 2021), the project is to generate 82 total net new trips after reduction of existing uses, meaning the project will generate 82 more trips than was previously permitted at this site. Default CalEEMod vehicle fleet mix utilized. See Appendix A for complete CalEEMod outputs. 1Based on the size of the site and relative location, trips were assumed to be local rather than regional. Trip generation generated by the proposed project are consistent with other similar residential uses of similar scale and configuration as reflected in the Trip Scoping Agreement (Integrated Engineering Group, October 19, 2021). That is, the proposed project does not propose uses or operations that would inherently result in excessive and wasteful vehicle trips, nor associated excess and wasteful vehicle energy consumption. Therefore, project transportation energy consumption would not be considered inefficient, wasteful, or otherwise unnecessary. Impacts in this regard related to energy would be less than significant and no mitigation measures are required. 8.2.2 Facility Energy Demands (Electricity and Natural Gas) The annual natural gas and electricity demands were provided per the CalEEMod output and are provided in Table 20. Table 20: Project Unmitigated Annual Operational Energy Demand Summary1 Natural Gas Demand kBTU/year Single Family Housing 2,531,260 Total 2,531,260 Electricity Demand kWh/year Single Family Housing 696,962 Total 696,962 Notes: 1Taken from the CalEEMod 2020.4.0 annual output. See Appendix B for complete CalEEMod output. Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA Energy Analysis 57 As shown in Table 20, the estimated electricity demand for the proposed project is approximately 696,962 kWh per year. In 2019, the residential sector of the County of Riverside consumed approximately 7,337 million kWh of electricity.10 In addition, the estimated natural gas consumption for the proposed project is approximately 2,531,260 kilo-British thermal units (kBTU) per year. In 2019, the non-residential sector of the County of Riverside consumed approximately 305 million therms of gas.11 Therefore, the increase in both electricity and natural gas demand from the proposed project is insignificant compared to the County’s 2019 demand. 8.3 Renewable Energy and Energy Efficiency Plan Consistency Regarding federal transportation regulations, the project site is located in an already developed area. Access to/from the project site is from existing roads. These roads are already in place so the project would not interfere with, nor otherwise obstruct intermodal transportation plans or projects that may be proposed pursuant to the Intermodal Surface Transportation Efficiency Act (ISTEA) because SCAG is not planning for intermodal facilities in the project area. Regarding the State’s Energy Plan and compliance with Title 24 CCR energy efficiency standards, the applicant is required to comply with the California Green Building Standard Code requirements for energy efficient buildings and appliances as well as utility energy efficiency programs implemented by the SCE and Southern California Gas Company. Regarding the State’s Renewable Energy Portfolio Standards, the project would be required to meet or exceed the energy standards established in the California Green Building Standards Code, Title 24, Part 11 (CALGreen). CalGreen Standards require that new buildings reduce water consumption, employ building commissioning to increase building system efficiencies, divert construction waste from landfills, and install low pollutant-emitting finish materials. The project would not conflict with or obstruct a state or local plan for renewable energy or energy efficiency and would therefore be less than significant. 10 California Energy Commission, Electricity Consumption by County. https://ecdms.energy.ca.gov/elecbycounty.aspx 11 California Energy Commission, Gas Consumption by County. http://ecdms.energy.ca.gov/gasbycounty.aspx Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA References 58 9.0 References The following references were used in the preparing this analysis. California Air Pollution Control Officers Association 2009 Health Risk Assessments for Proposed Land Use Projects California Air Resources Board 2008 Resolution 08-43 2008 Recommended Approaches for Setting Interim Significance Thresholds for Greenhouse Gases under the California Environmental Quality Act 2008 ARB Recommended Interim Risk Management Policy for Inhalation-Based Residential Cancer Risk – Frequently Asked Questions 2008 Climate Change Scoping Plan, a framework for change. 2011 Supplement to the AB 32 Scoping Plan Functional Equivalent Document. 2014 First Update to the Climate Change Scoping Plan, Building on the Framework Pursuant to AB32, the California Global Warming Solutions Act of 2006. May. 2016 Ambient Air Quality Standards. May 4. 2018 Historical Air Quality, Top 4 Summary City of Palm Desert 2016 Interactive Zoning Map. November. County of Riverside 2015 County of Riverside General Plan. December 8. 2019 County of Riverside Climate Action Plan Update. November. Governor’s Office of Planning and Research 2008 CEQA and Climate: Addressing Climate Change Through California Environmental Quality Act (CEQA) Review 2009 CEQA Guideline Sections to be Added or Amended Integrated Engineering Group Crossings at Palm Desert Air Quality and Greenhouse Gas Impact Study City of Palm Desert, CA References 59 2021 Scoping Agreement for Traffic Impact Study Central Avenue Gas Station, County of Riverside, CA. October 19. Office of Environmental Health Hazard Assessment 2015 Air Toxics Hot Spots Program Risk Assessment Guidelines South Coast Air Quality Management District 1993 CEQA Air Quality Handbook 2005 Rule 403 Fugitive Dust 2007 2007 Air Quality Management Plan 2008 Final Localized Significance Threshold Methodology, Revised 2011 Appendix A Calculation Details for CalEEMod 2012 Final 2012 Air Quality Management Plan 2016 Final 2016 Air Quality Management Plan Appendix A: CalEEMod Daily Emission Output Crossings at Palm Desert Riverside-Salton Sea County, Summer Project Characteristics - Land Use - 3.0-acre apartment complex with 284 units and 330 parking spaces. Paving assumed to be a third of total site (1 acre). Construction Phase - Architectural Coating - Estimated 176,000 sqft of residential interior area Vehicle Trips - Per scoping agreement, estimated 1909 trips per day (10.85 trips per day per unit) Woodstoves - No woodstoves or fireplaces Construction Off-road Equipment Mitigation - Waste Mitigation - AB 341 requires each jurisdiction in CA to divert at least 75% of their waste away from landfills by 2020. Trips and VMT - 1.1 Land Usage Land Uses Size Metric Lot Acreage Floor Surface Other Asphalt Surfaces 0.40 Acre 0.40 17,424.0 Other Non-Asphalt Surfaces 1.00 Acre 1.00 43,560.0 Parking Lot 330.00 Space 0.60 132,000. Apartments Mid Rise 176.00 Dwelling Unit 1.00 176,000. 1.2 Other Project Characteristics Urbanization Climate Zone Urban 10 Wind Speed (m/s) Precipitation Freq (Days)2.4 28 1.3 User Entered Comments & Non-Default Data 1.0 Project Characteristics Utility Company Southern California Edison 2023Operational Year CO2 Intensity (lb/MWhr) 390.98 0.033CH4 Intensity (lb/MWhr) 0.004N2O Intensity (lb/MWhr) CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 1 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Area Coating - Interior residential space estimated at 176,000 sqft 2.0 Emissions Summary Table Name Column Name Default Value New Value tblArchitecturalCoating ConstArea_Residential_Exterior 118,800.00 60,000.00 tblArchitecturalCoating ConstArea_Residential_Interior 356,400.00 176,000.00 tblArchitecturalCoating EF_Nonresidential_Exterior 250.00 100.00 tblArchitecturalCoating EF_Nonresidential_Interior 250.00 50.00 tblArchitecturalCoating EF_Parking 250.00 100.00 tblArchitecturalCoating EF_Residential_Exterior 250.00 50.00 tblArchitecturalCoating EF_Residential_Interior 250.00 50.00 tblAreaCoating Area_EF_Parking 250 100 tblAreaCoating Area_EF_Residential_Exterior 250 50 tblAreaCoating Area_EF_Residential_Interior 250 50 tblAreaCoating Area_Residential_Interior 356400 176000 tblFireplaces FireplaceDayYear 82.00 0.00 tblFireplaces FireplaceWoodMass 457.60 0.00 tblFireplaces NumberGas 140.80 0.00 tblFireplaces NumberNoFireplace 17.60 0.00 tblFireplaces NumberWood 17.60 0.00 tblLandUse LotAcreage 2.97 0.60 tblLandUse LotAcreage 4.63 1.00 tblVehicleTrips ST_TR 4.91 10.85 tblVehicleTrips SU_TR 4.09 10.85 tblVehicleTrips WD_TR 5.44 10.85 tblWoodstoves NumberCatalytic 8.80 0.00 tblWoodstoves NumberNoncatalytic 8.80 0.00 tblWoodstoves WoodstoveWoodMass 999.60 0.00 CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 2 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 2.1 Overall Construction (Maximum Daily Emission) ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Year lb/day lb/day 2022 60.4068 17.0040 21.4872 0.0483 7.1663 0.7427 7.9090 3.4469 0.7043 4.1302 0.0000 4,684.177 1 4,684.177 1 0.7699 2023 60.3834 1.3788 3.0118 6.0800e- 003 0.3514 0.0725 0.4239 0.0932 0.0724 0.1656 0.0000 599.7508 599.7508 0.0252 Maximum 60.4068 17.0040 21.4872 0.0483 7.1663 0.7427 7.9090 3.4469 0.7043 4.1302 0.0000 4,684.177 1 4,684.177 1 0.7699 Unmitigated Construction ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Year lb/day lb/day 2022 60.4068 17.0040 21.4872 0.0483 2.8459 0.7427 3.5886 1.3578 0.7043 2.0411 0.0000 4,684.177 1 4,684.177 1 0.7699 2023 60.3834 1.3788 3.0118 6.0800e- 003 0.3514 0.0725 0.4239 0.0932 0.0724 0.1656 0.0000 599.7508 599.7508 0.0252 Maximum 60.4068 17.0040 21.4872 0.0483 2.8459 0.7427 3.5886 1.3578 0.7043 2.0411 0.0000 4,684.177 1 4,684.177 1 0.7699 Mitigated Construction CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 3 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio-CO2 Total CO2 CH4 Percent Reduction 0.00 0.00 0.00 0.00 57.47 0.00 51.85 59.01 0.00 48.63 0.00 0.00 0.00 0.00 CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 4 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 2.2 Overall Operational ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Area 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 Energy 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 0.0156 Mobile 5.3263 5.9984 43.3652 0.0926 9.0265 0.0729 9.0994 2.4083 0.0683 2.4766 9,525.850 2 9,525.850 2 0.5220 Total 9.8784 6.8052 58.1945 0.0975 9.0265 0.2050 9.2315 2.4083 0.2004 2.6088 0.0000 10,367.94 60 10,367.94 60 0.5629 Unmitigated Operational ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Area 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 Energy 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 0.0156 Mobile 5.3263 5.9984 43.3652 0.0926 9.0265 0.0729 9.0994 2.4083 0.0683 2.4766 9,525.850 2 9,525.850 2 0.5220 Total 9.8784 6.8052 58.1945 0.0975 9.0265 0.2050 9.2315 2.4083 0.2004 2.6088 0.0000 10,367.94 60 10,367.94 60 0.5629 Mitigated Operational CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 5 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.0 Construction Detail Construction Phase Phase Number Phase Name Phase Type Start Date End Date Num Days Week Num Days Phase Description 1 Site Preparation Site Preparation 2/1/2022 2/3/2022 5 3 2 Grading Grading 2/4/2022 2/11/2022 5 6 3 Building Construction Building Construction 2/12/2022 12/16/2022 5 220 4 Paving Paving 12/17/2022 12/30/2022 5 10 5 Architectural Coating Architectural Coating 12/31/2022 1/13/2023 5 10 OffRoad Equipment Phase Name Offroad Equipment Type Amount Usage Hours Horse Power Load Factor Site Preparation Graders 1 8.00 187 0.41 Site Preparation Scrapers 1 8.00 367 0.48 Site Preparation Tractors/Loaders/Backhoes 1 7.00 97 0.37 Grading Graders 1 8.00 187 0.41 Grading Rubber Tired Dozers 1 8.00 247 0.40 Grading Tractors/Loaders/Backhoes 2 7.00 97 0.37 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio-CO2 Total CO2 CH Percent Reduction 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0 Residential Indoor: 176,000; Residential Outdoor: 60,000; Non-Residential Indoor: 0; Non-Residential Outdoor: 0; Striped Parkin (Architectural Coating – sqft) Acres of Grading (Site Preparation Phase): 4.5 Acres of Grading (Grading Phase): 6 Acres of Paving: 2 CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 6 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.1 Mitigation Measures Construction Water Exposed Area Building Construction Cranes 1 8.00 231 0.29 Building Construction Forklifts 2 7.00 89 0.20 Building Construction Generator Sets 1 8.00 84 0.74 Building Construction Tractors/Loaders/Backhoes 1 6.00 97 0.37 Building Construction Welders 3 8.00 46 0.45 Paving Cement and Mortar Mixers 1 8.00 9 0.56 Paving Pavers 1 8.00 130 0.42 Paving Paving Equipment 1 8.00 132 0.36 Paving Rollers 2 8.00 80 0.38 Paving Tractors/Loaders/Backhoes 1 8.00 97 0.37 Architectural Coating Air Compressors 1 6.00 78 0.48 Trips and VMT Phase Name Offroad Equipment Count Worker Trip Number Vendor Trip Number Hauling Trip Number Worker Trip Length Vendor Trip Length Hauling Trip Length Worker Vehicle Class Vendor Vehicle Clas Site Preparation 3 8.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Grading 4 10.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Building Construction 8 208.00 50.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Paving 6 15.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Architectural Coating 1 42.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 7 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.2 Site Preparation - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Fugitive Dust 1.5908 0.0000 1.5908 0.1718 0.0000 0.1718 0.0000 Off-Road 1.3784 15.6673 10.0558 0.0245 0.5952 0.5952 0.5476 0.5476 2,375.156 9 2,375.156 9 0.7682 Total 1.3784 15.6673 10.0558 0.0245 1.5908 0.5952 2.1859 0.1718 0.5476 0.7193 2,375.156 9 2,375.156 9 0.7682 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0271 0.0163 0.2481 6.1000e- 004 0.0669 3.4000e- 004 0.0673 0.0178 3.2000e- 004 0.0181 62.2761 62.2761 1.7700e- 003 Total 0.0271 0.0163 0.2481 6.1000e- 004 0.0669 3.4000e- 004 0.0673 0.0178 3.2000e- 004 0.0181 62.2761 62.2761 1.7700e- 003 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 8 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.2 Site Preparation - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Fugitive Dust 0.6204 0.0000 0.6204 0.0670 0.0000 0.0670 0.0000 Off-Road 1.3784 15.6673 10.0558 0.0245 0.5952 0.5952 0.5476 0.5476 0.0000 2,375.156 9 2,375.156 9 0.7682 Total 1.3784 15.6673 10.0558 0.0245 0.6204 0.5952 1.2156 0.0670 0.5476 0.6146 0.0000 2,375.156 9 2,375.156 9 0.7682 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0271 0.0163 0.2481 6.1000e- 004 0.0669 3.4000e- 004 0.0673 0.0178 3.2000e- 004 0.0181 62.2761 62.2761 1.7700e- 003 Total 0.0271 0.0163 0.2481 6.1000e- 004 0.0669 3.4000e- 004 0.0673 0.0178 3.2000e- 004 0.0181 62.2761 62.2761 1.7700e- 003 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 9 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.3 Grading - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Fugitive Dust 7.0826 0.0000 7.0826 3.4247 0.0000 3.4247 0.0000 Off-Road 1.5403 16.9836 9.2202 0.0206 0.7423 0.7423 0.6829 0.6829 1,995.482 5 1,995.482 5 0.6454 Total 1.5403 16.9836 9.2202 0.0206 7.0826 0.7423 7.8249 3.4247 0.6829 4.1076 1,995.482 5 1,995.482 5 0.6454 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0339 0.0204 0.3101 7.7000e- 004 0.0837 4.3000e- 004 0.0841 0.0222 4.0000e- 004 0.0226 77.8452 77.8452 2.2100e- 003 Total 0.0339 0.0204 0.3101 7.7000e- 004 0.0837 4.3000e- 004 0.0841 0.0222 4.0000e- 004 0.0226 77.8452 77.8452 2.2100e- 003 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 10 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.3 Grading - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Fugitive Dust 2.7622 0.0000 2.7622 1.3357 0.0000 1.3357 0.0000 Off-Road 1.5403 16.9836 9.2202 0.0206 0.7423 0.7423 0.6829 0.6829 0.0000 1,995.482 5 1,995.482 5 0.6454 Total 1.5403 16.9836 9.2202 0.0206 2.7622 0.7423 3.5045 1.3357 0.6829 2.0186 0.0000 1,995.482 5 1,995.482 5 0.6454 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0339 0.0204 0.3101 7.7000e- 004 0.0837 4.3000e- 004 0.0841 0.0222 4.0000e- 004 0.0226 77.8452 77.8452 2.2100e- 003 Total 0.0339 0.0204 0.3101 7.7000e- 004 0.0837 4.3000e- 004 0.0841 0.0222 4.0000e- 004 0.0226 77.8452 77.8452 2.2100e- 003 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 11 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.4 Building Construction - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Off-Road 1.8555 14.6040 14.3533 0.0250 0.7022 0.7022 0.6731 0.6731 2,289.281 3 2,289.281 3 0.4417 Total 1.8555 14.6040 14.3533 0.0250 0.7022 0.7022 0.6731 0.6731 2,289.281 3 2,289.281 3 0.4417 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0720 1.7933 0.6842 7.3200e- 003 0.2509 0.0240 0.2749 0.0723 0.0230 0.0952 775.7168 775.7168 8.5000e- 003 Worker 0.7050 0.4236 6.4498 0.0159 1.7403 8.9300e- 003 1.7492 0.4616 8.2200e- 003 0.4698 1,619.179 0 1,619.179 0 0.0460 Total 0.7771 2.2169 7.1340 0.0232 1.9912 0.0329 2.0241 0.5339 0.0312 0.5651 2,394.895 8 2,394.895 8 0.0545 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 12 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.4 Building Construction - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Off-Road 1.8555 14.6040 14.3533 0.0250 0.7022 0.7022 0.6731 0.6731 0.0000 2,289.281 3 2,289.281 3 0.4417 Total 1.8555 14.6040 14.3533 0.0250 0.7022 0.7022 0.6731 0.6731 0.0000 2,289.281 3 2,289.281 3 0.4417 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0720 1.7933 0.6842 7.3200e- 003 0.2509 0.0240 0.2749 0.0723 0.0230 0.0952 775.7168 775.7168 8.5000e- 003 Worker 0.7050 0.4236 6.4498 0.0159 1.7403 8.9300e- 003 1.7492 0.4616 8.2200e- 003 0.4698 1,619.179 0 1,619.179 0 0.0460 Total 0.7771 2.2169 7.1340 0.0232 1.9912 0.0329 2.0241 0.5339 0.0312 0.5651 2,394.895 8 2,394.895 8 0.0545 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 13 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.5 Paving - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Off-Road 0.9412 9.3322 11.6970 0.0179 0.4879 0.4879 0.4500 0.4500 1,709.689 2 1,709.689 2 0.5419 Paving 0.2620 0.0000 0.0000 0.0000 0.0000 0.0000 Total 1.2032 9.3322 11.6970 0.0179 0.4879 0.4879 0.4500 0.4500 1,709.689 2 1,709.689 2 0.5419 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0508 0.0306 0.4651 1.1500e- 003 0.1255 6.4000e- 004 0.1261 0.0333 5.9000e- 004 0.0339 116.7677 116.7677 3.3200e- 003 Total 0.0508 0.0306 0.4651 1.1500e- 003 0.1255 6.4000e- 004 0.1261 0.0333 5.9000e- 004 0.0339 116.7677 116.7677 3.3200e- 003 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 14 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.5 Paving - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Off-Road 0.9412 9.3322 11.6970 0.0179 0.4879 0.4879 0.4500 0.4500 0.0000 1,709.689 2 1,709.689 2 0.5419 Paving 0.2620 0.0000 0.0000 0.0000 0.0000 0.0000 Total 1.2032 9.3322 11.6970 0.0179 0.4879 0.4879 0.4500 0.4500 0.0000 1,709.689 2 1,709.689 2 0.5419 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0508 0.0306 0.4651 1.1500e- 003 0.1255 6.4000e- 004 0.1261 0.0333 5.9000e- 004 0.0339 116.7677 116.7677 3.3200e- 003 Total 0.0508 0.0306 0.4651 1.1500e- 003 0.1255 6.4000e- 004 0.1261 0.0333 5.9000e- 004 0.0339 116.7677 116.7677 3.3200e- 003 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 15 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Archit. Coating 60.0599 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.2045 1.4085 1.8136 2.9700e- 003 0.0817 0.0817 0.0817 0.0817 281.4481 281.4481 0.0183 Total 60.2644 1.4085 1.8136 2.9700e- 003 0.0817 0.0817 0.0817 0.0817 281.4481 281.4481 0.0183 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.1424 0.0855 1.3024 3.2100e- 003 0.3514 1.8000e- 003 0.3532 0.0932 1.6600e- 003 0.0949 326.9496 326.9496 9.2900e- 003 Total 0.1424 0.0855 1.3024 3.2100e- 003 0.3514 1.8000e- 003 0.3532 0.0932 1.6600e- 003 0.0949 326.9496 326.9496 9.2900e- 003 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 16 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Archit. Coating 60.0599 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.2045 1.4085 1.8136 2.9700e- 003 0.0817 0.0817 0.0817 0.0817 0.0000 281.4481 281.4481 0.0183 Total 60.2644 1.4085 1.8136 2.9700e- 003 0.0817 0.0817 0.0817 0.0817 0.0000 281.4481 281.4481 0.0183 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.1424 0.0855 1.3024 3.2100e- 003 0.3514 1.8000e- 003 0.3532 0.0932 1.6600e- 003 0.0949 326.9496 326.9496 9.2900e- 003 Total 0.1424 0.0855 1.3024 3.2100e- 003 0.3514 1.8000e- 003 0.3532 0.0932 1.6600e- 003 0.0949 326.9496 326.9496 9.2900e- 003 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 17 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2023 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Archit. Coating 60.0599 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.1917 1.3030 1.8111 2.9700e- 003 0.0708 0.0708 0.0708 0.0708 281.4481 281.4481 0.0168 Total 60.2515 1.3030 1.8111 2.9700e- 003 0.0708 0.0708 0.0708 0.0708 281.4481 281.4481 0.0168 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.1319 0.0758 1.2007 3.1100e- 003 0.3514 1.7000e- 003 0.3531 0.0932 1.5600e- 003 0.0948 318.3028 318.3028 8.3700e- 003 Total 0.1319 0.0758 1.2007 3.1100e- 003 0.3514 1.7000e- 003 0.3531 0.0932 1.5600e- 003 0.0948 318.3028 318.3028 8.3700e- 003 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 18 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2023 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Archit. Coating 60.0599 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.1917 1.3030 1.8111 2.9700e- 003 0.0708 0.0708 0.0708 0.0708 0.0000 281.4481 281.4481 0.0168 Total 60.2515 1.3030 1.8111 2.9700e- 003 0.0708 0.0708 0.0708 0.0708 0.0000 281.4481 281.4481 0.0168 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.1319 0.0758 1.2007 3.1100e- 003 0.3514 1.7000e- 003 0.3531 0.0932 1.5600e- 003 0.0948 318.3028 318.3028 8.3700e- 003 Total 0.1319 0.0758 1.2007 3.1100e- 003 0.3514 1.7000e- 003 0.3531 0.0932 1.5600e- 003 0.0948 318.3028 318.3028 8.3700e- 003 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 19 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 4.0 Operational Detail - Mobile ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Mitigated 5.3263 5.9984 43.3652 0.0926 9.0265 0.0729 9.0994 2.4083 0.0683 2.4766 9,525.850 2 9,525.850 2 0.5220 Unmitigated 5.3263 5.9984 43.3652 0.0926 9.0265 0.0729 9.0994 2.4083 0.0683 2.4766 9,525.850 2 9,525.850 2 0.5220 4.1 Mitigation Measures Mobile 4.2 Trip Summary Information 4.3 Trip Type Information Average Daily Trip Rate Unmitigated Mitigated Land Use Weekday Saturday Sunday Annual VMT Annual VMT Apartments Mid Rise 1,909.60 1,909.60 1909.60 4,271,624 4,271,624 Other Asphalt Surfaces 0.00 0.00 0.00 Other Non-Asphalt Surfaces 0.00 0.00 0.00 Parking Lot 0.00 0.00 0.00 Total 1,909.60 1,909.60 1,909.60 4,271,624 4,271,624 Miles Trip %Trip Purpose % Land Use H-W or C-W H-S or C-C H-O or C-NW H-W or C-W H-S or C-C H-O or C-NW Primary Diverted Pass- Apartments Mid Rise 11.00 3.50 4.50 40.20 19.20 40.60 86 11 3 Other Asphalt Surfaces 12.50 4.20 5.40 0.00 0.00 0.00 0 0 0 Other Non-Asphalt Surfaces 12.50 4.20 5.40 0.00 0.00 0.00 0 0 0 CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 20 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Miles Trip %Trip Purpose % Land Use H-W or C-W H-S or C-C H-O or C-NW H-W or C-W H-S or C-C H-O or C-NW Primary Diverted Pass- Parking Lot 12.50 4.20 5.40 0.00 0.00 0.00 0 0 0 4.4 Fleet Mix Land Use LDA LDT1 LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS Apartments Mid Rise 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 Other Asphalt Surfaces 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 Other Non-Asphalt Surfaces 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 Parking Lot 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 5.0 Energy Detail ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day NaturalGas Mitigated 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 0.0156 NaturalGas Unmitigated 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 0.0156 5.1 Mitigation Measures Energy Historical Energy Use: N CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 21 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 5.2 Energy by Land Use - NaturalGas NaturalGa s Use ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 Land Use kBTU/yr lb/day lb/d Apartments Mid Rise 6934.96 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 Other Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 Unmitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 22 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 6.1 Mitigation Measures Area 6.0 Area Detail 5.2 Energy by Land Use - NaturalGas NaturalGa s Use ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 Land Use kBTU/yr lb/day lb/d Apartments Mid Rise 6.93496 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 Other Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 Mitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 23 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Mitigated 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 Unmitigated 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 6.2 Area by SubCategory ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 SubCategory lb/day lb/day Architectural Coating 0.2019 0.0000 0.0000 0.0000 0.0000 0.0000 Consumer Products 3.8348 0.0000 0.0000 0.0000 0.0000 0.0000 Hearth 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Landscaping 0.4407 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 26.2177 26.2177 0.0253 Total 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 Unmitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 24 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 7.1 Mitigation Measures Water 7.0 Water Detail 6.2 Area by SubCategory ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 SubCategory lb/day lb/day Architectural Coating 0.2019 0.0000 0.0000 0.0000 0.0000 0.0000 Consumer Products 3.8348 0.0000 0.0000 0.0000 0.0000 0.0000 Hearth 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Landscaping 0.4407 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 26.2177 26.2177 0.0253 Total 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 Mitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 25 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 11.0 Vegetation 8.1 Mitigation Measures Waste Institute Recycling and Composting Services 8.0 Waste Detail 9.0 Operational Offroad Equipment Type Number Hours/Day Days/Year Horse Power Load Factor Fue 10.0 Stationary Equipment Fire Pumps and Emergency Generators Equipment Type Number Hours/Day Hours/Year Horse Power Load Factor Fue Boilers Equipment Type Number Heat Input/Day Heat Input/Year Boiler Rating Fuel Type User Defined Equipment Equipment Type Number CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 26 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Summer EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Crossings at Palm Desert Riverside-Salton Sea County, Winter Project Characteristics - Land Use - 3.0-acre apartment complex with 284 units and 330 parking spaces. Paving assumed to be a third of total site (1 acre). Construction Phase - Architectural Coating - Estimated 176,000 sqft of residential interior area Vehicle Trips - Per scoping agreement, estimated 1909 trips per day (10.85 trips per day per unit) Woodstoves - No woodstoves or fireplaces Construction Off-road Equipment Mitigation - Waste Mitigation - AB 341 requires each jurisdiction in CA to divert at least 75% of their waste away from landfills by 2020. Trips and VMT - 1.1 Land Usage Land Uses Size Metric Lot Acreage Floor Surface Other Asphalt Surfaces 0.40 Acre 0.40 17,424.0 Other Non-Asphalt Surfaces 1.00 Acre 1.00 43,560.0 Parking Lot 330.00 Space 0.60 132,000. Apartments Mid Rise 176.00 Dwelling Unit 1.00 176,000. 1.2 Other Project Characteristics Urbanization Climate Zone Urban 10 Wind Speed (m/s) Precipitation Freq (Days)2.4 28 1.3 User Entered Comments & Non-Default Data 1.0 Project Characteristics Utility Company Southern California Edison 2023Operational Year CO2 Intensity (lb/MWhr) 390.98 0.033CH4 Intensity (lb/MWhr) 0.004N2O Intensity (lb/MWhr) CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 1 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Area Coating - Interior residential space estimated at 176,000 sqft 2.0 Emissions Summary Table Name Column Name Default Value New Value tblArchitecturalCoating ConstArea_Residential_Exterior 118,800.00 60,000.00 tblArchitecturalCoating ConstArea_Residential_Interior 356,400.00 176,000.00 tblArchitecturalCoating EF_Nonresidential_Exterior 250.00 100.00 tblArchitecturalCoating EF_Nonresidential_Interior 250.00 50.00 tblArchitecturalCoating EF_Parking 250.00 100.00 tblArchitecturalCoating EF_Residential_Exterior 250.00 50.00 tblArchitecturalCoating EF_Residential_Interior 250.00 50.00 tblAreaCoating Area_EF_Parking 250 100 tblAreaCoating Area_EF_Residential_Exterior 250 50 tblAreaCoating Area_EF_Residential_Interior 250 50 tblAreaCoating Area_Residential_Interior 356400 176000 tblFireplaces FireplaceDayYear 82.00 0.00 tblFireplaces FireplaceWoodMass 457.60 0.00 tblFireplaces NumberGas 140.80 0.00 tblFireplaces NumberNoFireplace 17.60 0.00 tblFireplaces NumberWood 17.60 0.00 tblLandUse LotAcreage 2.97 0.60 tblLandUse LotAcreage 4.63 1.00 tblVehicleTrips ST_TR 4.91 10.85 tblVehicleTrips SU_TR 4.09 10.85 tblVehicleTrips WD_TR 5.44 10.85 tblWoodstoves NumberCatalytic 8.80 0.00 tblWoodstoves NumberNoncatalytic 8.80 0.00 tblWoodstoves WoodstoveWoodMass 999.60 0.00 CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 2 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 2.1 Overall Construction (Maximum Daily Emission) ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Year lb/day lb/day 2022 60.3943 17.0048 20.3731 0.0468 7.1663 0.7427 7.9090 3.4469 0.7044 4.1302 0.0000 4,533.414 3 4,533.414 3 0.7700 2023 60.3722 1.3817 2.8016 5.7900e- 003 0.3514 0.0725 0.4239 0.0932 0.0724 0.1656 0.0000 570.0000 570.0000 0.0254 Maximum 60.3943 17.0048 20.3731 0.0468 7.1663 0.7427 7.9090 3.4469 0.7044 4.1302 0.0000 4,533.414 3 4,533.414 3 0.7700 Unmitigated Construction ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Year lb/day lb/day 2022 60.3943 17.0048 20.3731 0.0468 2.8459 0.7427 3.5886 1.3578 0.7044 2.0411 0.0000 4,533.414 3 4,533.414 3 0.7700 2023 60.3722 1.3817 2.8016 5.7900e- 003 0.3514 0.0725 0.4239 0.0932 0.0724 0.1656 0.0000 570.0000 570.0000 0.0254 Maximum 60.3943 17.0048 20.3731 0.0468 2.8459 0.7427 3.5886 1.3578 0.7044 2.0411 0.0000 4,533.414 3 4,533.414 3 0.7700 Mitigated Construction CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 3 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio-CO2 Total CO2 CH4 Percent Reduction 0.00 0.00 0.00 0.00 57.47 0.00 51.85 59.01 0.00 48.63 0.00 0.00 0.00 0.00 CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 4 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 2.2 Overall Operational ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Area 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 Energy 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 0.0156 Mobile 4.4316 6.3555 39.0750 0.0860 9.0265 0.0729 9.0994 2.4083 0.0683 2.4766 8,854.248 3 8,854.248 3 0.5431 Total 8.9837 7.1623 53.9042 0.0909 9.0265 0.2051 9.2316 2.4083 0.2005 2.6088 0.0000 9,696.344 2 9,696.344 2 0.5841 Unmitigated Operational ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Area 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 Energy 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 0.0156 Mobile 4.4316 6.3555 39.0750 0.0860 9.0265 0.0729 9.0994 2.4083 0.0683 2.4766 8,854.248 3 8,854.248 3 0.5431 Total 8.9837 7.1623 53.9042 0.0909 9.0265 0.2051 9.2316 2.4083 0.2005 2.6088 0.0000 9,696.344 2 9,696.344 2 0.5841 Mitigated Operational CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 5 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.0 Construction Detail Construction Phase Phase Number Phase Name Phase Type Start Date End Date Num Days Week Num Days Phase Description 1 Site Preparation Site Preparation 2/1/2022 2/3/2022 5 3 2 Grading Grading 2/4/2022 2/11/2022 5 6 3 Building Construction Building Construction 2/12/2022 12/16/2022 5 220 4 Paving Paving 12/17/2022 12/30/2022 5 10 5 Architectural Coating Architectural Coating 12/31/2022 1/13/2023 5 10 OffRoad Equipment Phase Name Offroad Equipment Type Amount Usage Hours Horse Power Load Factor Site Preparation Graders 1 8.00 187 0.41 Site Preparation Scrapers 1 8.00 367 0.48 Site Preparation Tractors/Loaders/Backhoes 1 7.00 97 0.37 Grading Graders 1 8.00 187 0.41 Grading Rubber Tired Dozers 1 8.00 247 0.40 Grading Tractors/Loaders/Backhoes 2 7.00 97 0.37 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio-CO2 Total CO2 CH Percent Reduction 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0 Residential Indoor: 176,000; Residential Outdoor: 60,000; Non-Residential Indoor: 0; Non-Residential Outdoor: 0; Striped Parkin (Architectural Coating – sqft) Acres of Grading (Site Preparation Phase): 4.5 Acres of Grading (Grading Phase): 6 Acres of Paving: 2 CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 6 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.1 Mitigation Measures Construction Water Exposed Area Building Construction Cranes 1 8.00 231 0.29 Building Construction Forklifts 2 7.00 89 0.20 Building Construction Generator Sets 1 8.00 84 0.74 Building Construction Tractors/Loaders/Backhoes 1 6.00 97 0.37 Building Construction Welders 3 8.00 46 0.45 Paving Cement and Mortar Mixers 1 8.00 9 0.56 Paving Pavers 1 8.00 130 0.42 Paving Paving Equipment 1 8.00 132 0.36 Paving Rollers 2 8.00 80 0.38 Paving Tractors/Loaders/Backhoes 1 8.00 97 0.37 Architectural Coating Air Compressors 1 6.00 78 0.48 Trips and VMT Phase Name Offroad Equipment Count Worker Trip Number Vendor Trip Number Hauling Trip Number Worker Trip Length Vendor Trip Length Hauling Trip Length Worker Vehicle Class Vendor Vehicle Clas Site Preparation 3 8.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Grading 4 10.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Building Construction 8 208.00 50.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Paving 6 15.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Architectural Coating 1 42.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 7 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.2 Site Preparation - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Fugitive Dust 1.5908 0.0000 1.5908 0.1718 0.0000 0.1718 0.0000 Off-Road 1.3784 15.6673 10.0558 0.0245 0.5952 0.5952 0.5476 0.5476 2,375.156 9 2,375.156 9 0.7682 Total 1.3784 15.6673 10.0558 0.0245 1.5908 0.5952 2.1859 0.1718 0.5476 0.7193 2,375.156 9 2,375.156 9 0.7682 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0247 0.0169 0.2041 5.5000e- 004 0.0669 3.4000e- 004 0.0673 0.0178 3.2000e- 004 0.0181 56.4371 56.4371 1.8000e- 003 Total 0.0247 0.0169 0.2041 5.5000e- 004 0.0669 3.4000e- 004 0.0673 0.0178 3.2000e- 004 0.0181 56.4371 56.4371 1.8000e- 003 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 8 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.2 Site Preparation - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Fugitive Dust 0.6204 0.0000 0.6204 0.0670 0.0000 0.0670 0.0000 Off-Road 1.3784 15.6673 10.0558 0.0245 0.5952 0.5952 0.5476 0.5476 0.0000 2,375.156 9 2,375.156 9 0.7682 Total 1.3784 15.6673 10.0558 0.0245 0.6204 0.5952 1.2156 0.0670 0.5476 0.6146 0.0000 2,375.156 9 2,375.156 9 0.7682 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0247 0.0169 0.2041 5.5000e- 004 0.0669 3.4000e- 004 0.0673 0.0178 3.2000e- 004 0.0181 56.4371 56.4371 1.8000e- 003 Total 0.0247 0.0169 0.2041 5.5000e- 004 0.0669 3.4000e- 004 0.0673 0.0178 3.2000e- 004 0.0181 56.4371 56.4371 1.8000e- 003 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 9 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.3 Grading - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Fugitive Dust 7.0826 0.0000 7.0826 3.4247 0.0000 3.4247 0.0000 Off-Road 1.5403 16.9836 9.2202 0.0206 0.7423 0.7423 0.6829 0.6829 1,995.482 5 1,995.482 5 0.6454 Total 1.5403 16.9836 9.2202 0.0206 7.0826 0.7423 7.8249 3.4247 0.6829 4.1076 1,995.482 5 1,995.482 5 0.6454 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0309 0.0211 0.2552 6.9000e- 004 0.0837 4.3000e- 004 0.0841 0.0222 4.0000e- 004 0.0226 70.5463 70.5463 2.2500e- 003 Total 0.0309 0.0211 0.2552 6.9000e- 004 0.0837 4.3000e- 004 0.0841 0.0222 4.0000e- 004 0.0226 70.5463 70.5463 2.2500e- 003 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 10 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.3 Grading - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Fugitive Dust 2.7622 0.0000 2.7622 1.3357 0.0000 1.3357 0.0000 Off-Road 1.5403 16.9836 9.2202 0.0206 0.7423 0.7423 0.6829 0.6829 0.0000 1,995.482 5 1,995.482 5 0.6454 Total 1.5403 16.9836 9.2202 0.0206 2.7622 0.7423 3.5045 1.3357 0.6829 2.0186 0.0000 1,995.482 5 1,995.482 5 0.6454 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0309 0.0211 0.2552 6.9000e- 004 0.0837 4.3000e- 004 0.0841 0.0222 4.0000e- 004 0.0226 70.5463 70.5463 2.2500e- 003 Total 0.0309 0.0211 0.2552 6.9000e- 004 0.0837 4.3000e- 004 0.0841 0.0222 4.0000e- 004 0.0226 70.5463 70.5463 2.2500e- 003 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 11 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.4 Building Construction - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Off-Road 1.8555 14.6040 14.3533 0.0250 0.7022 0.7022 0.6731 0.6731 2,289.281 3 2,289.281 3 0.4417 Total 1.8555 14.6040 14.3533 0.0250 0.7022 0.7022 0.6731 0.6731 2,289.281 3 2,289.281 3 0.4417 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0685 1.8897 0.7128 7.3300e- 003 0.2509 0.0241 0.2750 0.0723 0.0230 0.0953 776.7697 776.7697 8.3400e- 003 Worker 0.6434 0.4398 5.3070 0.0144 1.7403 8.9300e- 003 1.7492 0.4616 8.2200e- 003 0.4698 1,467.363 3 1,467.363 3 0.0467 Total 0.7118 2.3295 6.0199 0.0218 1.9912 0.0330 2.0242 0.5339 0.0313 0.5651 2,244.133 0 2,244.133 0 0.0551 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 12 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.4 Building Construction - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Off-Road 1.8555 14.6040 14.3533 0.0250 0.7022 0.7022 0.6731 0.6731 0.0000 2,289.281 3 2,289.281 3 0.4417 Total 1.8555 14.6040 14.3533 0.0250 0.7022 0.7022 0.6731 0.6731 0.0000 2,289.281 3 2,289.281 3 0.4417 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0685 1.8897 0.7128 7.3300e- 003 0.2509 0.0241 0.2750 0.0723 0.0230 0.0953 776.7697 776.7697 8.3400e- 003 Worker 0.6434 0.4398 5.3070 0.0144 1.7403 8.9300e- 003 1.7492 0.4616 8.2200e- 003 0.4698 1,467.363 3 1,467.363 3 0.0467 Total 0.7118 2.3295 6.0199 0.0218 1.9912 0.0330 2.0242 0.5339 0.0313 0.5651 2,244.133 0 2,244.133 0 0.0551 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 13 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.5 Paving - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Off-Road 0.9412 9.3322 11.6970 0.0179 0.4879 0.4879 0.4500 0.4500 1,709.689 2 1,709.689 2 0.5419 Paving 0.2620 0.0000 0.0000 0.0000 0.0000 0.0000 Total 1.2032 9.3322 11.6970 0.0179 0.4879 0.4879 0.4500 0.4500 1,709.689 2 1,709.689 2 0.5419 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0464 0.0317 0.3827 1.0400e- 003 0.1255 6.4000e- 004 0.1261 0.0333 5.9000e- 004 0.0339 105.8195 105.8195 3.3700e- 003 Total 0.0464 0.0317 0.3827 1.0400e- 003 0.1255 6.4000e- 004 0.1261 0.0333 5.9000e- 004 0.0339 105.8195 105.8195 3.3700e- 003 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 14 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.5 Paving - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Off-Road 0.9412 9.3322 11.6970 0.0179 0.4879 0.4879 0.4500 0.4500 0.0000 1,709.689 2 1,709.689 2 0.5419 Paving 0.2620 0.0000 0.0000 0.0000 0.0000 0.0000 Total 1.2032 9.3322 11.6970 0.0179 0.4879 0.4879 0.4500 0.4500 0.0000 1,709.689 2 1,709.689 2 0.5419 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0464 0.0317 0.3827 1.0400e- 003 0.1255 6.4000e- 004 0.1261 0.0333 5.9000e- 004 0.0339 105.8195 105.8195 3.3700e- 003 Total 0.0464 0.0317 0.3827 1.0400e- 003 0.1255 6.4000e- 004 0.1261 0.0333 5.9000e- 004 0.0339 105.8195 105.8195 3.3700e- 003 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 15 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Archit. Coating 60.0599 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.2045 1.4085 1.8136 2.9700e- 003 0.0817 0.0817 0.0817 0.0817 281.4481 281.4481 0.0183 Total 60.2644 1.4085 1.8136 2.9700e- 003 0.0817 0.0817 0.0817 0.0817 281.4481 281.4481 0.0183 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.1299 0.0888 1.0716 2.9100e- 003 0.3514 1.8000e- 003 0.3532 0.0932 1.6600e- 003 0.0949 296.2945 296.2945 9.4400e- 003 Total 0.1299 0.0888 1.0716 2.9100e- 003 0.3514 1.8000e- 003 0.3532 0.0932 1.6600e- 003 0.0949 296.2945 296.2945 9.4400e- 003 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 16 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Archit. Coating 60.0599 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.2045 1.4085 1.8136 2.9700e- 003 0.0817 0.0817 0.0817 0.0817 0.0000 281.4481 281.4481 0.0183 Total 60.2644 1.4085 1.8136 2.9700e- 003 0.0817 0.0817 0.0817 0.0817 0.0000 281.4481 281.4481 0.0183 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.1299 0.0888 1.0716 2.9100e- 003 0.3514 1.8000e- 003 0.3532 0.0932 1.6600e- 003 0.0949 296.2945 296.2945 9.4400e- 003 Total 0.1299 0.0888 1.0716 2.9100e- 003 0.3514 1.8000e- 003 0.3532 0.0932 1.6600e- 003 0.0949 296.2945 296.2945 9.4400e- 003 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 17 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2023 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Archit. Coating 60.0599 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.1917 1.3030 1.8111 2.9700e- 003 0.0708 0.0708 0.0708 0.0708 281.4481 281.4481 0.0168 Total 60.2515 1.3030 1.8111 2.9700e- 003 0.0708 0.0708 0.0708 0.0708 281.4481 281.4481 0.0168 Unmitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.1207 0.0787 0.9905 2.8200e- 003 0.3514 1.7000e- 003 0.3531 0.0932 1.5600e- 003 0.0948 288.5519 288.5519 8.5300e- 003 Total 0.1207 0.0787 0.9905 2.8200e- 003 0.3514 1.7000e- 003 0.3531 0.0932 1.5600e- 003 0.0948 288.5519 288.5519 8.5300e- 003 Unmitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 18 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2023 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Archit. Coating 60.0599 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.1917 1.3030 1.8111 2.9700e- 003 0.0708 0.0708 0.0708 0.0708 0.0000 281.4481 281.4481 0.0168 Total 60.2515 1.3030 1.8111 2.9700e- 003 0.0708 0.0708 0.0708 0.0708 0.0000 281.4481 281.4481 0.0168 Mitigated Construction On-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.1207 0.0787 0.9905 2.8200e- 003 0.3514 1.7000e- 003 0.3531 0.0932 1.5600e- 003 0.0948 288.5519 288.5519 8.5300e- 003 Total 0.1207 0.0787 0.9905 2.8200e- 003 0.3514 1.7000e- 003 0.3531 0.0932 1.5600e- 003 0.0948 288.5519 288.5519 8.5300e- 003 Mitigated Construction Off-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 19 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 4.0 Operational Detail - Mobile ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Mitigated 4.4316 6.3555 39.0750 0.0860 9.0265 0.0729 9.0994 2.4083 0.0683 2.4766 8,854.248 3 8,854.248 3 0.5431 Unmitigated 4.4316 6.3555 39.0750 0.0860 9.0265 0.0729 9.0994 2.4083 0.0683 2.4766 8,854.248 3 8,854.248 3 0.5431 4.1 Mitigation Measures Mobile 4.2 Trip Summary Information 4.3 Trip Type Information Average Daily Trip Rate Unmitigated Mitigated Land Use Weekday Saturday Sunday Annual VMT Annual VMT Apartments Mid Rise 1,909.60 1,909.60 1909.60 4,271,624 4,271,624 Other Asphalt Surfaces 0.00 0.00 0.00 Other Non-Asphalt Surfaces 0.00 0.00 0.00 Parking Lot 0.00 0.00 0.00 Total 1,909.60 1,909.60 1,909.60 4,271,624 4,271,624 Miles Trip %Trip Purpose % Land Use H-W or C-W H-S or C-C H-O or C-NW H-W or C-W H-S or C-C H-O or C-NW Primary Diverted Pass- Apartments Mid Rise 11.00 3.50 4.50 40.20 19.20 40.60 86 11 3 Other Asphalt Surfaces 12.50 4.20 5.40 0.00 0.00 0.00 0 0 0 Other Non-Asphalt Surfaces 12.50 4.20 5.40 0.00 0.00 0.00 0 0 0 CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 20 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Miles Trip %Trip Purpose % Land Use H-W or C-W H-S or C-C H-O or C-NW H-W or C-W H-S or C-C H-O or C-NW Primary Diverted Pass- Parking Lot 12.50 4.20 5.40 0.00 0.00 0.00 0 0 0 4.4 Fleet Mix Land Use LDA LDT1 LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS Apartments Mid Rise 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 Other Asphalt Surfaces 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 Other Non-Asphalt Surfaces 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 Parking Lot 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 5.0 Energy Detail ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day NaturalGas Mitigated 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 0.0156 NaturalGas Unmitigated 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 0.0156 5.1 Mitigation Measures Energy Historical Energy Use: N CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 21 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 5.2 Energy by Land Use - NaturalGas NaturalGa s Use ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 Land Use kBTU/yr lb/day lb/d Apartments Mid Rise 6934.96 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 Other Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 Unmitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 22 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 6.1 Mitigation Measures Area 6.0 Area Detail 5.2 Energy by Land Use - NaturalGas NaturalGa s Use ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 Land Use kBTU/yr lb/day lb/d Apartments Mid Rise 6.93496 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 Other Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0748 0.6391 0.2720 4.0800e- 003 0.0517 0.0517 0.0517 0.0517 815.8781 815.8781 Mitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 23 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category lb/day lb/day Mitigated 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 Unmitigated 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 6.2 Area by SubCategory ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 SubCategory lb/day lb/day Architectural Coating 0.2019 0.0000 0.0000 0.0000 0.0000 0.0000 Consumer Products 3.8348 0.0000 0.0000 0.0000 0.0000 0.0000 Hearth 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Landscaping 0.4407 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 26.2177 26.2177 0.0253 Total 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 Unmitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 24 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 7.1 Mitigation Measures Water 7.0 Water Detail 6.2 Area by SubCategory ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 SubCategory lb/day lb/day Architectural Coating 0.2019 0.0000 0.0000 0.0000 0.0000 0.0000 Consumer Products 3.8348 0.0000 0.0000 0.0000 0.0000 0.0000 Hearth 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Landscaping 0.4407 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 26.2177 26.2177 0.0253 Total 4.4773 0.1677 14.5573 7.7000e- 004 0.0805 0.0805 0.0805 0.0805 0.0000 26.2177 26.2177 0.0253 Mitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 25 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 11.0 Vegetation 8.1 Mitigation Measures Waste Institute Recycling and Composting Services 8.0 Waste Detail 9.0 Operational Offroad Equipment Type Number Hours/Day Days/Year Horse Power Load Factor Fue 10.0 Stationary Equipment Fire Pumps and Emergency Generators Equipment Type Number Hours/Day Hours/Year Horse Power Load Factor Fue Boilers Equipment Type Number Heat Input/Day Heat Input/Year Boiler Rating Fuel Type User Defined Equipment Equipment Type Number CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 26 of 26 Crossings at Palm Desert - Riverside-Salton Sea County, Winter EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Appendix B: CalEEMod Annual Emission Output Crossings at Palm Desert Riverside-Salton Sea County, Annual Project Characteristics - Land Use - 3.0-acre apartment complex with 284 units and 330 parking spaces. Paving assumed to be a third of total site (1 acre). Construction Phase - Architectural Coating - Estimated 176,000 sqft of residential interior area Vehicle Trips - Per scoping agreement, estimated 1909 trips per day (10.85 trips per day per unit) Woodstoves - No woodstoves or fireplaces Construction Off-road Equipment Mitigation - Waste Mitigation - AB 341 requires each jurisdiction in CA to divert at least 75% of their waste away from landfills by 2020. Trips and VMT - 1.1 Land Usage Land Uses Size Metric Lot Acreage Floor Surface Other Asphalt Surfaces 0.40 Acre 0.40 17,424.0 Other Non-Asphalt Surfaces 1.00 Acre 1.00 43,560.0 Parking Lot 330.00 Space 0.60 132,000. Apartments Mid Rise 176.00 Dwelling Unit 1.00 176,000. 1.2 Other Project Characteristics Urbanization Climate Zone Urban 10 Wind Speed (m/s) Precipitation Freq (Days)2.4 28 1.3 User Entered Comments & Non-Default Data 1.0 Project Characteristics Utility Company Southern California Edison 2023Operational Year CO2 Intensity (lb/MWhr) 390.98 0.033CH4 Intensity (lb/MWhr) 0.004N2O Intensity (lb/MWhr) CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 1 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Area Coating - Interior residential space estimated at 176,000 sqft 2.0 Emissions Summary Table Name Column Name Default Value New Value tblArchitecturalCoating ConstArea_Residential_Exterior 118,800.00 60,000.00 tblArchitecturalCoating ConstArea_Residential_Interior 356,400.00 176,000.00 tblArchitecturalCoating EF_Nonresidential_Exterior 250.00 100.00 tblArchitecturalCoating EF_Nonresidential_Interior 250.00 50.00 tblArchitecturalCoating EF_Parking 250.00 100.00 tblArchitecturalCoating EF_Residential_Exterior 250.00 50.00 tblArchitecturalCoating EF_Residential_Interior 250.00 50.00 tblAreaCoating Area_EF_Parking 250 100 tblAreaCoating Area_EF_Residential_Exterior 250 50 tblAreaCoating Area_EF_Residential_Interior 250 50 tblAreaCoating Area_Residential_Interior 356400 176000 tblFireplaces FireplaceDayYear 82.00 0.00 tblFireplaces FireplaceWoodMass 457.60 0.00 tblFireplaces NumberGas 140.80 0.00 tblFireplaces NumberNoFireplace 17.60 0.00 tblFireplaces NumberWood 17.60 0.00 tblLandUse LotAcreage 2.97 0.60 tblLandUse LotAcreage 4.63 1.00 tblVehicleTrips ST_TR 4.91 10.85 tblVehicleTrips SU_TR 4.09 10.85 tblVehicleTrips WD_TR 5.44 10.85 tblWoodstoves NumberCatalytic 8.80 0.00 tblWoodstoves NumberNoncatalytic 8.80 0.00 tblWoodstoves WoodstoveWoodMass 999.60 0.00 CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 2 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 2.1 Overall Construction ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Year tons/yr MT/yr 2022 0.2926 1.9841 2.3732 5.3800e- 003 0.2401 0.0864 0.3265 0.0686 0.0826 0.1512 0.0000 472.9167 472.9167 0.0549 2023 0.3018 6.9200e- 003 0.0143 3.0000e- 005 1.7300e- 003 3.6000e- 004 2.0900e- 003 4.6000e- 004 3.6000e- 004 8.2000e- 004 0.0000 2.6158 2.6158 1.2000e- 004 Maximum 0.3018 1.9841 2.3732 5.3800e- 003 0.2401 0.0864 0.3265 0.0686 0.0826 0.1512 0.0000 472.9167 472.9167 0.0549 Unmitigated Construction ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Year tons/yr MT/yr 2022 0.2926 1.9841 2.3732 5.3800e- 003 0.2256 0.0864 0.3121 0.0622 0.0826 0.1448 0.0000 472.9164 472.9164 0.0549 2023 0.3018 6.9200e- 003 0.0143 3.0000e- 005 1.7300e- 003 3.6000e- 004 2.0900e- 003 4.6000e- 004 3.6000e- 004 8.2000e- 004 0.0000 2.6158 2.6158 1.2000e- 004 Maximum 0.3018 1.9841 2.3732 5.3800e- 003 0.2256 0.0864 0.3121 0.0622 0.0826 0.1448 0.0000 472.9164 472.9164 0.0549 Mitigated Construction CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 3 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio-CO2 Total CO2 CH4 Percent Reduction 0.00 0.00 0.00 0.00 5.96 0.00 4.39 9.31 0.00 4.23 0.00 0.00 0.00 0.00 Quarter Start Date End Date Maximum Unmitigated ROG + NOX (tons/quarter)Maximum Mitigated ROG + NOX (tons/quarter) 1 2-1-2022 4-30-2022 0.6141 0.6141 2 5-1-2022 7-31-2022 0.6392 0.6392 3 8-1-2022 10-31-2022 0.6397 0.6397 4 11-1-2022 1-31-2023 0.6823 0.6823 Highest 0.6823 0.6823 2.2 Overall Operational ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Area 0.7764 0.0151 1.3102 7.0000e- 005 7.2500e- 003 7.2500e- 003 7.2500e- 003 7.2500e- 003 0.0000 2.1406 2.1406 2.0700e- 003 Energy 0.0137 0.1166 0.0496 7.4000e- 004 9.4300e- 003 9.4300e- 003 9.4300e- 003 9.4300e- 003 0.0000 266.8742 266.8742 0.0137 Mobile 0.8158 1.1612 7.3168 0.0159 1.6157 0.0133 1.6290 0.4317 0.0124 0.4441 0.0000 1,484.684 8 1,484.684 8 0.0892 Waste 0.0000 0.0000 0.0000 0.0000 16.4342 0.0000 16.4342 0.9712 Water 0.0000 0.0000 0.0000 0.0000 3.6380 40.7239 44.3619 0.3771 Total 1.6058 1.2930 8.6766 0.0167 1.6157 0.0299 1.6457 0.4317 0.0291 0.4608 20.0721 1,794.423 5 1,814.495 6 1.4533 Unmitigated Operational CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 4 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 2.2 Overall Operational ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Area 0.7764 0.0151 1.3102 7.0000e- 005 7.2500e- 003 7.2500e- 003 7.2500e- 003 7.2500e- 003 0.0000 2.1406 2.1406 2.0700e- 003 Energy 0.0137 0.1166 0.0496 7.4000e- 004 9.4300e- 003 9.4300e- 003 9.4300e- 003 9.4300e- 003 0.0000 266.8742 266.8742 0.0137 Mobile 0.8158 1.1612 7.3168 0.0159 1.6157 0.0133 1.6290 0.4317 0.0124 0.4441 0.0000 1,484.684 8 1,484.684 8 0.0892 Waste 0.0000 0.0000 0.0000 0.0000 4.1085 0.0000 4.1085 0.2428 Water 0.0000 0.0000 0.0000 0.0000 3.6380 40.7239 44.3619 0.3771 Total 1.6058 1.2930 8.6766 0.0167 1.6157 0.0299 1.6457 0.4317 0.0291 0.4608 7.7465 1,794.423 5 1,802.170 0 0.7249 Mitigated Operational 3.0 Construction Detail Construction Phase Phase Number Phase Name Phase Type Start Date End Date Num Days Week Num Days Phase Description 1 Site Preparation Site Preparation 2/1/2022 2/3/2022 5 3 2 Grading Grading 2/4/2022 2/11/2022 5 6 3 Building Construction Building Construction 2/12/2022 12/16/2022 5 220 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio-CO2 Total CO2 CH Percent Reduction 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 61.41 0.00 0.68 50. CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 5 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 4 Paving Paving 12/17/2022 12/30/2022 5 10 5 Architectural Coating Architectural Coating 12/31/2022 1/13/2023 5 10 OffRoad Equipment Phase Name Offroad Equipment Type Amount Usage Hours Horse Power Load Factor Site Preparation Graders 1 8.00 187 0.41 Site Preparation Scrapers 1 8.00 367 0.48 Site Preparation Tractors/Loaders/Backhoes 1 7.00 97 0.37 Grading Graders 1 8.00 187 0.41 Grading Rubber Tired Dozers 1 8.00 247 0.40 Grading Tractors/Loaders/Backhoes 2 7.00 97 0.37 Building Construction Cranes 1 8.00 231 0.29 Building Construction Forklifts 2 7.00 89 0.20 Building Construction Generator Sets 1 8.00 84 0.74 Building Construction Tractors/Loaders/Backhoes 1 6.00 97 0.37 Building Construction Welders 3 8.00 46 0.45 Paving Cement and Mortar Mixers 1 8.00 9 0.56 Paving Pavers 1 8.00 130 0.42 Paving Paving Equipment 1 8.00 132 0.36 Paving Rollers 2 8.00 80 0.38 Paving Tractors/Loaders/Backhoes 1 8.00 97 0.37 Architectural Coating Air Compressors 1 6.00 78 0.48 Residential Indoor: 176,000; Residential Outdoor: 60,000; Non-Residential Indoor: 0; Non-Residential Outdoor: 0; Striped Parkin (Architectural Coating – sqft) Acres of Grading (Site Preparation Phase): 4.5 Acres of Grading (Grading Phase): 6 Acres of Paving: 2 CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 6 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.2 Site Preparation - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Fugitive Dust 2.3900e- 003 0.0000 2.3900e- 003 2.6000e- 004 0.0000 2.6000e- 004 0.0000 0.0000 0.0000 0.0000 Off-Road 2.0700e- 003 0.0235 0.0151 4.0000e- 005 8.9000e- 004 8.9000e- 004 8.2000e- 004 8.2000e- 004 0.0000 3.2321 3.2321 1.0500e- 003 Total 2.0700e- 003 0.0235 0.0151 4.0000e- 005 2.3900e- 003 8.9000e- 004 3.2800e- 003 2.6000e- 004 8.2000e- 004 1.0800e- 003 0.0000 3.2321 3.2321 1.0500e- 003 Unmitigated Construction On-Site 3.1 Mitigation Measures Construction Water Exposed Area Trips and VMT Phase Name Offroad Equipment Count Worker Trip Number Vendor Trip Number Hauling Trip Number Worker Trip Length Vendor Trip Length Hauling Trip Length Worker Vehicle Class Vendor Vehicle Clas Site Preparation 3 8.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Grading 4 10.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Building Construction 8 208.00 50.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Paving 6 15.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix Architectural Coating 1 42.00 0.00 0.00 11.00 5.40 20.00 LD_Mix HDT_Mix CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 7 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.2 Site Preparation - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 4.0000e- 005 3.0000e- 005 3.2000e- 004 0.0000 1.0000e- 004 0.0000 1.0000e- 004 3.0000e- 005 0.0000 3.0000e- 005 0.0000 0.0786 0.0786 0.0000 Total 4.0000e- 005 3.0000e- 005 3.2000e- 004 0.0000 1.0000e- 004 0.0000 1.0000e- 004 3.0000e- 005 0.0000 3.0000e- 005 0.0000 0.0786 0.0786 0.0000 Unmitigated Construction Off-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Fugitive Dust 9.3000e- 004 0.0000 9.3000e- 004 1.0000e- 004 0.0000 1.0000e- 004 0.0000 0.0000 0.0000 0.0000 Off-Road 2.0700e- 003 0.0235 0.0151 4.0000e- 005 8.9000e- 004 8.9000e- 004 8.2000e- 004 8.2000e- 004 0.0000 3.2321 3.2321 1.0500e- 003 Total 2.0700e- 003 0.0235 0.0151 4.0000e- 005 9.3000e- 004 8.9000e- 004 1.8200e- 003 1.0000e- 004 8.2000e- 004 9.2000e- 004 0.0000 3.2321 3.2321 1.0500e- 003 Mitigated Construction On-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 8 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.2 Site Preparation - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 4.0000e- 005 3.0000e- 005 3.2000e- 004 0.0000 1.0000e- 004 0.0000 1.0000e- 004 3.0000e- 005 0.0000 3.0000e- 005 0.0000 0.0786 0.0786 0.0000 Total 4.0000e- 005 3.0000e- 005 3.2000e- 004 0.0000 1.0000e- 004 0.0000 1.0000e- 004 3.0000e- 005 0.0000 3.0000e- 005 0.0000 0.0786 0.0786 0.0000 Mitigated Construction Off-Site 3.3 Grading - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Fugitive Dust 0.0213 0.0000 0.0213 0.0103 0.0000 0.0103 0.0000 0.0000 0.0000 0.0000 Off-Road 4.6200e- 003 0.0510 0.0277 6.0000e- 005 2.2300e- 003 2.2300e- 003 2.0500e- 003 2.0500e- 003 0.0000 5.4308 5.4308 1.7600e- 003 Total 4.6200e- 003 0.0510 0.0277 6.0000e- 005 0.0213 2.2300e- 003 0.0235 0.0103 2.0500e- 003 0.0123 0.0000 5.4308 5.4308 1.7600e- 003 Unmitigated Construction On-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 9 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.3 Grading - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 9.0000e- 005 7.0000e- 005 8.0000e- 004 0.0000 2.5000e- 004 0.0000 2.5000e- 004 7.0000e- 005 0.0000 7.0000e- 005 0.0000 0.1965 0.1965 1.0000e- 005 Total 9.0000e- 005 7.0000e- 005 8.0000e- 004 0.0000 2.5000e- 004 0.0000 2.5000e- 004 7.0000e- 005 0.0000 7.0000e- 005 0.0000 0.1965 0.1965 1.0000e- 005 Unmitigated Construction Off-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Fugitive Dust 8.2900e- 003 0.0000 8.2900e- 003 4.0100e- 003 0.0000 4.0100e- 003 0.0000 0.0000 0.0000 0.0000 Off-Road 4.6200e- 003 0.0510 0.0277 6.0000e- 005 2.2300e- 003 2.2300e- 003 2.0500e- 003 2.0500e- 003 0.0000 5.4308 5.4308 1.7600e- 003 Total 4.6200e- 003 0.0510 0.0277 6.0000e- 005 8.2900e- 003 2.2300e- 003 0.0105 4.0100e- 003 2.0500e- 003 6.0600e- 003 0.0000 5.4308 5.4308 1.7600e- 003 Mitigated Construction On-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 10 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.3 Grading - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 9.0000e- 005 7.0000e- 005 8.0000e- 004 0.0000 2.5000e- 004 0.0000 2.5000e- 004 7.0000e- 005 0.0000 7.0000e- 005 0.0000 0.1965 0.1965 1.0000e- 005 Total 9.0000e- 005 7.0000e- 005 8.0000e- 004 0.0000 2.5000e- 004 0.0000 2.5000e- 004 7.0000e- 005 0.0000 7.0000e- 005 0.0000 0.1965 0.1965 1.0000e- 005 Mitigated Construction Off-Site 3.4 Building Construction - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Off-Road 0.2041 1.6064 1.5789 2.7500e- 003 0.0772 0.0772 0.0740 0.0740 0.0000 228.4481 228.4481 0.0441 Total 0.2041 1.6064 1.5789 2.7500e- 003 0.0772 0.0772 0.0740 0.0740 0.0000 228.4481 228.4481 0.0441 Unmitigated Construction On-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 11 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.4 Building Construction - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 7.7200e- 003 0.2067 0.0767 8.1000e- 004 0.0272 2.6400e- 003 0.0299 7.8600e- 003 2.5300e- 003 0.0104 0.0000 77.4533 77.4533 8.4000e- 004 Worker 0.0678 0.0496 0.6133 1.6200e- 003 0.1882 9.8000e- 004 0.1892 0.0500 9.0000e- 004 0.0509 0.0000 149.8312 149.8312 4.6700e- 003 Total 0.0755 0.2563 0.6900 2.4300e- 003 0.2155 3.6200e- 003 0.2191 0.0579 3.4300e- 003 0.0613 0.0000 227.2845 227.2845 5.5100e- 003 Unmitigated Construction Off-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Off-Road 0.2041 1.6064 1.5789 2.7500e- 003 0.0772 0.0772 0.0740 0.0740 0.0000 228.4478 228.4478 0.0441 Total 0.2041 1.6064 1.5789 2.7500e- 003 0.0772 0.0772 0.0740 0.0740 0.0000 228.4478 228.4478 0.0441 Mitigated Construction On-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 12 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.4 Building Construction - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 7.7200e- 003 0.2067 0.0767 8.1000e- 004 0.0272 2.6400e- 003 0.0299 7.8600e- 003 2.5300e- 003 0.0104 0.0000 77.4533 77.4533 8.4000e- 004 Worker 0.0678 0.0496 0.6133 1.6200e- 003 0.1882 9.8000e- 004 0.1892 0.0500 9.0000e- 004 0.0509 0.0000 149.8312 149.8312 4.6700e- 003 Total 0.0755 0.2563 0.6900 2.4300e- 003 0.2155 3.6200e- 003 0.2191 0.0579 3.4300e- 003 0.0613 0.0000 227.2845 227.2845 5.5100e- 003 Mitigated Construction Off-Site 3.5 Paving - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Off-Road 4.7100e- 003 0.0467 0.0585 9.0000e- 005 2.4400e- 003 2.4400e- 003 2.2500e- 003 2.2500e- 003 0.0000 7.7550 7.7550 2.4600e- 003 Paving 1.3100e- 003 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 6.0200e- 003 0.0467 0.0585 9.0000e- 005 2.4400e- 003 2.4400e- 003 2.2500e- 003 2.2500e- 003 0.0000 7.7550 7.7550 2.4600e- 003 Unmitigated Construction On-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 13 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.5 Paving - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 2.2000e- 004 1.6000e- 004 2.0100e- 003 1.0000e- 005 6.2000e- 004 0.0000 6.2000e- 004 1.6000e- 004 0.0000 1.7000e- 004 0.0000 0.4911 0.4911 2.0000e- 005 Total 2.2000e- 004 1.6000e- 004 2.0100e- 003 1.0000e- 005 6.2000e- 004 0.0000 6.2000e- 004 1.6000e- 004 0.0000 1.7000e- 004 0.0000 0.4911 0.4911 2.0000e- 005 Unmitigated Construction Off-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Off-Road 4.7100e- 003 0.0467 0.0585 9.0000e- 005 2.4400e- 003 2.4400e- 003 2.2500e- 003 2.2500e- 003 0.0000 7.7550 7.7550 2.4600e- 003 Paving 1.3100e- 003 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 6.0200e- 003 0.0467 0.0585 9.0000e- 005 2.4400e- 003 2.4400e- 003 2.2500e- 003 2.2500e- 003 0.0000 7.7550 7.7550 2.4600e- 003 Mitigated Construction On-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 14 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.5 Paving - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 2.2000e- 004 1.6000e- 004 2.0100e- 003 1.0000e- 005 6.2000e- 004 0.0000 6.2000e- 004 1.6000e- 004 0.0000 1.7000e- 004 0.0000 0.4911 0.4911 2.0000e- 005 Total 2.2000e- 004 1.6000e- 004 2.0100e- 003 1.0000e- 005 6.2000e- 004 0.0000 6.2000e- 004 1.6000e- 004 0.0000 1.7000e- 004 0.0000 0.4911 0.4911 2.0000e- 005 Mitigated Construction Off-Site 3.6 Architectural Coating - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Archit. Coating 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Unmitigated Construction On-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 15 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Unmitigated Construction Off-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Archit. Coating 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Mitigated Construction On-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 16 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2022 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Mitigated Construction Off-Site 3.6 Architectural Coating - 2023 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Archit. Coating 0.3003 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 9.6000e- 004 6.5100e- 003 9.0600e- 003 1.0000e- 005 3.5000e- 004 3.5000e- 004 3.5000e- 004 3.5000e- 004 0.0000 1.2766 1.2766 8.0000e- 005 Total 0.3013 6.5100e- 003 9.0600e- 003 1.0000e- 005 3.5000e- 004 3.5000e- 004 3.5000e- 004 3.5000e- 004 0.0000 1.2766 1.2766 8.0000e- 005 Unmitigated Construction On-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 17 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2023 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 5.8000e- 004 4.0000e- 004 5.2000e- 003 1.0000e- 005 1.7300e- 003 1.0000e- 005 1.7400e- 003 4.6000e- 004 1.0000e- 005 4.7000e- 004 0.0000 1.3391 1.3391 4.0000e- 005 Total 5.8000e- 004 4.0000e- 004 5.2000e- 003 1.0000e- 005 1.7300e- 003 1.0000e- 005 1.7400e- 003 4.6000e- 004 1.0000e- 005 4.7000e- 004 0.0000 1.3391 1.3391 4.0000e- 005 Unmitigated Construction Off-Site ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Archit. Coating 0.3003 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Off-Road 9.6000e- 004 6.5100e- 003 9.0600e- 003 1.0000e- 005 3.5000e- 004 3.5000e- 004 3.5000e- 004 3.5000e- 004 0.0000 1.2766 1.2766 8.0000e- 005 Total 0.3013 6.5100e- 003 9.0600e- 003 1.0000e- 005 3.5000e- 004 3.5000e- 004 3.5000e- 004 3.5000e- 004 0.0000 1.2766 1.2766 8.0000e- 005 Mitigated Construction On-Site CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 18 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 3.6 Architectural Coating - 2023 ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Hauling 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Vendor 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Worker 5.8000e- 004 4.0000e- 004 5.2000e- 003 1.0000e- 005 1.7300e- 003 1.0000e- 005 1.7400e- 003 4.6000e- 004 1.0000e- 005 4.7000e- 004 0.0000 1.3391 1.3391 4.0000e- 005 Total 5.8000e- 004 4.0000e- 004 5.2000e- 003 1.0000e- 005 1.7300e- 003 1.0000e- 005 1.7400e- 003 4.6000e- 004 1.0000e- 005 4.7000e- 004 0.0000 1.3391 1.3391 4.0000e- 005 Mitigated Construction Off-Site 4.0 Operational Detail - Mobile 4.1 Mitigation Measures Mobile CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 19 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Mitigated 0.8158 1.1612 7.3168 0.0159 1.6157 0.0133 1.6290 0.4317 0.0124 0.4441 0.0000 1,484.684 8 1,484.684 8 0.0892 Unmitigated 0.8158 1.1612 7.3168 0.0159 1.6157 0.0133 1.6290 0.4317 0.0124 0.4441 0.0000 1,484.684 8 1,484.684 8 0.0892 4.2 Trip Summary Information 4.3 Trip Type Information Average Daily Trip Rate Unmitigated Mitigated Land Use Weekday Saturday Sunday Annual VMT Annual VMT Apartments Mid Rise 1,909.60 1,909.60 1909.60 4,271,624 4,271,624 Other Asphalt Surfaces 0.00 0.00 0.00 Other Non-Asphalt Surfaces 0.00 0.00 0.00 Parking Lot 0.00 0.00 0.00 Total 1,909.60 1,909.60 1,909.60 4,271,624 4,271,624 Miles Trip %Trip Purpose % Land Use H-W or C-W H-S or C-C H-O or C-NW H-W or C-W H-S or C-C H-O or C-NW Primary Diverted Pass- Apartments Mid Rise 11.00 3.50 4.50 40.20 19.20 40.60 86 11 3 Other Asphalt Surfaces 12.50 4.20 5.40 0.00 0.00 0.00 0 0 0 Other Non-Asphalt Surfaces 12.50 4.20 5.40 0.00 0.00 0.00 0 0 0 Parking Lot 12.50 4.20 5.40 0.00 0.00 0.00 0 0 0 4.4 Fleet Mix CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 20 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Land Use LDA LDT1 LDT2 MDV LHD1 LHD2 MHD HHD OBUS UBUS Apartments Mid Rise 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 Other Asphalt Surfaces 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 Other Non-Asphalt Surfaces 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 Parking Lot 0.534849 0.056022 0.172639 0.141007 0.026597 0.007310 0.011327 0.018693 0.000616 0.000315 0 5.0 Energy Detail ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Electricity Mitigated 0.0000 0.0000 0.0000 0.0000 0.0000 131.7964 131.7964 0.0111 Electricity Unmitigated 0.0000 0.0000 0.0000 0.0000 0.0000 131.7964 131.7964 0.0111 NaturalGas Mitigated 0.0137 0.1166 0.0496 7.4000e- 004 9.4300e- 003 9.4300e- 003 9.4300e- 003 9.4300e- 003 0.0000 135.0778 135.0778 2.5900e- 003 NaturalGas Unmitigated 0.0137 0.1166 0.0496 7.4000e- 004 9.4300e- 003 9.4300e- 003 9.4300e- 003 9.4300e- 003 0.0000 135.0778 135.0778 2.5900e- 003 5.1 Mitigation Measures Energy Historical Energy Use: N CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 21 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 5.2 Energy by Land Use - NaturalGas NaturalGa s Use ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 Land Use kBTU/yr tons/yr MT/ Apartments Mid Rise 2.53126e +006 0.0137 0.1166 0.0496 7.4000e- 004 9.4300e- 003 9.4300e- 003 9.4300e- 003 9.4300e- 003 0.0000 135.0778 135.0778 Other Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0137 0.1166 0.0496 7.4000e- 004 9.4300e- 003 9.4300e- 003 9.4300e- 003 9.4300e- 003 0.0000 135.0778 135.0778 Unmitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 22 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 5.2 Energy by Land Use - NaturalGas NaturalGa s Use ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 Land Use kBTU/yr tons/yr MT/ Apartments Mid Rise 2.53126e +006 0.0137 0.1166 0.0496 7.4000e- 004 9.4300e- 003 9.4300e- 003 9.4300e- 003 9.4300e- 003 0.0000 135.0778 135.0778 Other Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Parking Lot 0 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Total 0.0137 0.1166 0.0496 7.4000e- 004 9.4300e- 003 9.4300e- 003 9.4300e- 003 9.4300e- 003 0.0000 135.0778 135.0778 Mitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 23 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 5.3 Energy by Land Use - Electricity Electricity Use Total CO2 CH4 N2O CO2e Land Use kWh/yr MT/yr Apartments Mid Rise 696962 123.6031 0.0104 1.2600e- 003 124.2407 Other Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 Parking Lot 46200 8.1934 6.9000e- 004 8.0000e- 005 8.2356 Total 131.7964 0.0111 1.3400e- 003 132.4763 Unmitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 24 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 6.1 Mitigation Measures Area 6.0 Area Detail 5.3 Energy by Land Use - Electricity Electricity Use Total CO2 CH4 N2O CO2e Land Use kWh/yr MT/yr Apartments Mid Rise 696962 123.6031 0.0104 1.2600e- 003 124.2407 Other Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 Parking Lot 46200 8.1934 6.9000e- 004 8.0000e- 005 8.2356 Total 131.7964 0.0111 1.3400e- 003 132.4763 Mitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 25 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 Category tons/yr MT/yr Mitigated 0.7764 0.0151 1.3102 7.0000e- 005 7.2500e- 003 7.2500e- 003 7.2500e- 003 7.2500e- 003 0.0000 2.1406 2.1406 2.0700e- 003 Unmitigated 0.7764 0.0151 1.3102 7.0000e- 005 7.2500e- 003 7.2500e- 003 7.2500e- 003 7.2500e- 003 0.0000 2.1406 2.1406 2.0700e- 003 6.2 Area by SubCategory ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 SubCategory tons/yr MT/yr Architectural Coating 0.0368 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Consumer Products 0.6998 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hearth 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Landscaping 0.0397 0.0151 1.3102 7.0000e- 005 7.2500e- 003 7.2500e- 003 7.2500e- 003 7.2500e- 003 0.0000 2.1406 2.1406 2.0700e- 003 Total 0.7763 0.0151 1.3102 7.0000e- 005 7.2500e- 003 7.2500e- 003 7.2500e- 003 7.2500e- 003 0.0000 2.1406 2.1406 2.0700e- 003 Unmitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 26 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 7.1 Mitigation Measures Water 7.0 Water Detail 6.2 Area by SubCategory ROG NOx CO SO2 Fugitive PM10 Exhaust PM10 PM10 Total Fugitive PM2.5 Exhaust PM2.5 PM2.5 Total Bio- CO2 NBio- CO2 Total CO2 CH4 SubCategory tons/yr MT/yr Architectural Coating 0.0368 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Consumer Products 0.6998 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Hearth 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 Landscaping 0.0397 0.0151 1.3102 7.0000e- 005 7.2500e- 003 7.2500e- 003 7.2500e- 003 7.2500e- 003 0.0000 2.1406 2.1406 2.0700e- 003 Total 0.7763 0.0151 1.3102 7.0000e- 005 7.2500e- 003 7.2500e- 003 7.2500e- 003 7.2500e- 003 0.0000 2.1406 2.1406 2.0700e- 003 Mitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 27 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Total CO2 CH4 N2O CO2e Category MT/yr Mitigated 44.3619 0.3771 9.2400e- 003 56.5426 Unmitigated 44.3619 0.3771 9.2400e- 003 56.5426 7.2 Water by Land Use Indoor/Out door Use Total CO2 CH4 N2O CO2e Land Use Mgal MT/yr Apartments Mid Rise 11.4671 / 7.22926 44.3619 0.3771 9.2400e- 003 56.5426 Other Asphalt Surfaces 0 / 0 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 / 0 0.0000 0.0000 0.0000 0.0000 Parking Lot 0 / 0 0.0000 0.0000 0.0000 0.0000 Total 44.3619 0.3771 9.2400e- 003 56.5426 Unmitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 28 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 7.2 Water by Land Use Indoor/Out door Use Total CO2 CH4 N2O CO2e Land Use Mgal MT/yr Apartments Mid Rise 11.4671 / 7.22926 44.3619 0.3771 9.2400e- 003 56.5426 Other Asphalt Surfaces 0 / 0 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 / 0 0.0000 0.0000 0.0000 0.0000 Parking Lot 0 / 0 0.0000 0.0000 0.0000 0.0000 Total 44.3619 0.3771 9.2400e- 003 56.5426 Mitigated 8.1 Mitigation Measures Waste Institute Recycling and Composting Services 8.0 Waste Detail CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 29 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Total CO2 CH4 N2O CO2e MT/yr Mitigated 4.1085 0.2428 0.0000 10.1787 Unmitigated 16.4342 0.9712 0.0000 40.7149 Category/Year 8.2 Waste by Land Use Waste Disposed Total CO2 CH4 N2O CO2e Land Use tons MT/yr Apartments Mid Rise 80.96 16.4342 0.9712 0.0000 40.7149 Other Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 Parking Lot 0 0.0000 0.0000 0.0000 0.0000 Total 16.4342 0.9712 0.0000 40.7149 Unmitigated CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 30 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 8.2 Waste by Land Use Waste Disposed Total CO2 CH4 N2O CO2e Land Use tons MT/yr Apartments Mid Rise 20.24 4.1085 0.2428 0.0000 10.1787 Other Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 Other Non- Asphalt Surfaces 0 0.0000 0.0000 0.0000 0.0000 Parking Lot 0 0.0000 0.0000 0.0000 0.0000 Total 4.1085 0.2428 0.0000 10.1787 Mitigated 9.0 Operational Offroad Equipment Type Number Hours/Day Days/Year Horse Power Load Factor Fue 10.0 Stationary Equipment Fire Pumps and Emergency Generators Equipment Type Number Hours/Day Hours/Year Horse Power Load Factor Fue Boilers Equipment Type Number Heat Input/Day Heat Input/Year Boiler Rating Fuel Type User Defined Equipment CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 31 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule 11.0 Vegetation Equipment Type Number CalEEMod Version: CalEEMod.2020.4.0 Date: 11/4/2Page 32 of 32 Crossings at Palm Desert - Riverside-Salton Sea County, Annual EMFAC Off-Model Adjustment Factors for Gasoline Light Duty Vehicle to Account for the SAFE Vehicle Rule Appendix C: EMFAC2017 Output ŽƌŵŝƐƐŝŽŶƐ͕ϭϬϬϬŐĂůůŽŶƐͬĚĂLJĨŽƌ&ƵĞůŽŶƐƵŵƉƚŝŽŶ ĞůzĞĂƌ ^ƉĞĞĚ &ƵĞů WŽƉƵůĂƚŝŽŶ dƌŝƉƐ &ƵĞůŽŶƐƵŵƉƚŝŽŶ &ƵĞůŽŶƐƵŵƉƚŝŽŶ dŽƚĂů&ƵĞůŽŶƐƵŵƉƚŝŽŶ sDd dŽƚĂůsDd DŝůĞƐWĞƌ'ĂůůŽŶ sĞŚŝĐůĞůĂƐƐ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϳϳ͘ϴϮϮϱϭ ϭϱϱϳ͘Ϭϳϯ ϭ͘ϵϭϰϲϳϮϬϵϱ ϭϵϭϰ͘ϲϳϮϬϵϱ ϭϵϴϰϰϳϴ͘ϭϱϳ ϳϵϳϬ͘ϵϴϭ ϭϯϯϴϭϰϬϮ͘Ϭϵ ϲ͘ϳϰ ,, ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϬϴϯϲϮ ϭϭϭϴϲϭϳ ϭϵϴϮ͘ϱϲϯϰϴϱ ϭϵϴϮϱϲϯ͘ϰϴϱ ϭϯϯϳϯϰϯϭ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϲϱϰϮϴϯϮ ϯϬϵϭϱϳϬϭ ϴϭϳϴ͘ϭϰϰϮϱϵ ϴϭϳϴϭϰϰ͘Ϯϱϵ ϴϮϮϲϱϲϴ͘ϯϲ Ϯ͘ϱϮнϬϴ ϮϱϰϲϬϮϯϳϱ͘ϰ ϯϬ͘ϵϱ > ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϱϴϵϯϳ͘ϱ Ϯϳϵϵϳϯ͘ϰ ϰϴ͘ϰϮϰϭϬϬϰϱ ϰϴϰϮϰ͘ϭϬϬϰϱ ϮϯϱϴϮϯϬ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ůĞĐƚƌŝĐŝƚLJ ϭϮϳϱϯϮ͘ϲ ϲϯϳϬϮϱ͘ϰ Ϭ Ϭ ϱϭϳϳϳϬϵ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϳϯϲϵϬϱ͘ϲ ϯϯϵϵϱϭϮ ϭϬϯϭ͘ϰϰϳϰϬϴ ϭϬϯϭϰϰϳ͘ϰϬϴ ϭϬϯϭϴϰϳ͘Ϯϴϳ ϮϳϯϬϬϴϵϲ ϮϳϯϬϵϵϯϮ͘ϲϴ Ϯϲ͘ϰϳ >dϭ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϯϴϳ͘ϭϱϳϭ ϭϯϰϴ͘ϰϬϴ Ϭ͘ϯϵϵϴϳϵϭϮ ϯϵϵ͘ϴϳϵϭϭϵϴ ϵϬϯϳ͘ϭϮϮ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ůĞĐƚƌŝĐŝƚLJ ϱϯϯϵ͘ϬϰϮ Ϯϲϳϵϰ͘ϰϳ Ϭ Ϭ ϮϮϭϱϬϳ͘ϰ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϮϮϰϲϯϬϯ ϭϬϱϯϱϵϭϬ ϯϰϯϲ͘ϭϱϱϱϱϳ ϯϰϯϲϭϱϱ͘ϱϱϳ ϯϰϱϯϮϬϳ͘ϲϭϴ ϴϰϳϰϬϭϮϵ ϴϱϯϰϴϭϮϱ͘ϳϴ Ϯϰ͘ϳϮ >dϮ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϰϮϯϰ͘ϱϵ ϳϬϭϵϯ͘ϮϮ ϭϳ͘ϬϱϮϬϲϬϴϴ ϭϳϬϱϮ͘ϬϲϬϴϴ ϲϬϳϵϵϲ͘ϱ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ůĞĐƚƌŝĐŝƚLJ ϮϮϱϴϵ͘ϵϲ ϭϭϰϯϬϮ͘ϲ Ϭ Ϭ ϳϯϰϳϱϲ͘ϭ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϭϳϱϵϬϯ͘ϭ ϮϲϮϬϲϵϰ ϱϵϴ͘Ϭϲϴϱϰϵϯ ϱϵϴϬϲϴ͘ϱϰϵϯ ϴϮϭϱϭϯ͘ϱϭϬϯ ϲϮϵϴϮϱϭ ϭϭϭϭϱϮϱϴ͘ϯϳ ϭϯ͘ϱϯ >,dϭ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϭϵϯϴϬ͘ϳ ϭϱϬϭϲϱϵ ϮϮϯ͘ϰϰϰϵϲϭ ϮϮϯϰϰϰ͘ϵϲϭ ϰϴϭϳϬϬϳ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϯϬϬϬϵ͘ϵϮ ϰϰϳϭϬϯ͘ϭ ϭϭϯ͘ϱϭϱϬϲϵϱ ϭϭϯϱϭϱ͘Ϭϲϵϱ ϮϬϵϬϲϳ͘Ϭϱϯϭ ϭϬϰϬϲϰϵ ϮϵϬϮϮϴϵ͘ϯϵϳ ϭϯ͘ϴϴ >,dϮ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϰϳϯϯϱ͘ϲϯ ϱϵϱϰϮϮ͘ϳ ϵϱ͘ϱϱϭϵϴϯϱϴ ϵϱϱϱϭ͘ϵϴϯϱϴ ϭϴϲϭϲϰϬ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϮϵϱϵϲϬ͘ϭ ϱϵϭϵϮϬ͘Ϯ ϱϲ͘ϵϮϮϭϰϱϴϵ ϱϲϵϮϮ͘ϭϰϱϴϵ ϱϲϵϮϮ͘ϭϰϱϴϵ ϮϬϳϮϯϳϬ ϮϬϳϮϯϳϬ͘ϭϮϲ ϯϲ͘ϰϭ Dz ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϭϱϳϵϲϰϬ ϳϯϬϮϰϬϳ Ϯϳϵϯ͘ϳϵϵϱϲϭ Ϯϳϵϯϳϵϵ͘ϱϲϭ ϮϴϰϮϵϰϰ͘ϯϭϲ ϱϱϴϴϴϵϭϲ ϱϳϮϯϯϳϮϮ͘ϴ ϮϬ͘ϭϯ Ds ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϯϯϯϰϴ͘ϵϮ ϭϲϯϱϮϲ͘ϯ ϰϵ͘ϭϰϰϳϱϰϳϯ ϰϵϭϰϰ͘ϳϱϰϳϯ ϭϯϰϰϴϬϲ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ůĞĐƚƌŝĐŝƚLJ ϭϭϲϱϴ͘ϰϴ ϱϵϲϮϱ͘ϯ Ϭ Ϭ ϯϵϭϵϰϰ͘ϯ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϯϱϬϵϳ͘ϳϱ ϯϱϭϭ͘ϭϳϵ ϲϰ͘ϳϬϰϭϬϯϵϱ ϲϰϳϬϰ͘ϭϬϯϵϱ ϳϲϮϳϬ͘ϯϴϮϭϭ ϯϯϯϮϴϮ͘ϰ ϰϱϱϲϰϭ͘ϱϳϰϲ ϱ͘ϵϳ D, ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϮϳϱϴ͘ϴϭ ϭϮϳϱ͘ϴϴϭ ϭϭ͘ϱϲϲϮϳϴϭϱ ϭϭϱϲϲ͘Ϯϳϴϭϱ ϭϮϮϯϱϵ͘Ϯ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ Ϯϱϰϰϱ͘ϰϭ ϱϬϵϭϭϭ͘ϴ Ϯϲϵ͘ϮϴϰϮϭϳϲ ϮϲϵϮϴϰ͘Ϯϭϳϲ ϭϬϬϵϱϲϴ͘ϰϴϴ ϭϯϲϳϳϰϯ ϵϯϬϳϬϴϯ͘Ϭϴϰ ϵ͘ϮϮ D,d ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϮϯϯϭϬ ϭϮϯϭϵϴϴ ϳϰϬ͘ϮϴϰϮϳ ϳϰϬϮϴϰ͘Ϯϳ ϳϵϯϵϯϰϬ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϱϵϱϵ͘ϰϰϯ ϭϭϵϮϯϲ͘ϱ ϰϵ͘ϲϳϱϴϵϳϵϲ ϰϵϲϳϱ͘ϴϵϳϵϲ ϴϴϭϯϴ͘ϬϰϮϭϰ ϮϱϬϲϱϯ͘ϱ ϱϳϲϲϬϯ͘ϱϵϳϮ ϲ͘ϱϰ Kh^ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϰϮϳϰ͘ϰϵϵ ϰϭϲϬϳ͘ϯϵ ϯϴ͘ϰϲϮϭϰϰϭϴ ϯϴϰϲϮ͘ϭϰϰϭϴ ϯϮϱϵϱϬ͘ϭ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϮϲϯϬ͘ϴϮϵ ϭϬϱϮϯ͘ϯϮ ϭϭ͘ϳϲϬϱϮϲϳ ϭϭϳϲϬ͘ϱϮϲϳ ϯϵϯϮϴ͘ϭϴϴϱ ϭϬϳϯϲϵ͘ϴ ϯϭϲϵϭϱ͘ϵϭϳϯ ϴ͘Ϭϲ ^h^ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϲϲϯϭ͘ϯϭϯ ϳϲϱϮϰ͘ϰϯ Ϯϳ͘ϱϲϳϲϲϭϴ Ϯϳϱϲϳ͘ϲϲϭϴ ϮϬϵϱϰϲ͘ϭ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϵϱϮ͘ϭϰϲ ϯϴϬϴ͘ϱϴϰ ϭϴ͘ϰϬϬϴϱϲϮϵ ϭϴϰϬϬ͘ϴϱϲϮϵ ϭϴϲϰϳ͘ϲϱϮϰϵ ϴϵϮϱϲ ϵϬϳϯϰ͘Ϭϴϯϴϲ ϰ͘ϴϳ hh^ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϰ͘ϭϰϭϰϮ ϱϲ͘ϱϲϱϲϳ Ϭ͘Ϯϰϲϳϵϲϭϵϴ Ϯϰϲ͘ϳϵϲϭϵϴϰ ϭϰϳϴ͘Ϭϴϲ ĞŐĂƚĞ ŐŐƌĞŐĂƚĞ ůĞĐƚƌŝĐŝƚLJ ϭϳ͘ϭϭϲϵϰ ϲϴ͘ϰϲϳϳϲ Ϭ ϭϯϰϯ͘ϭϴϱ ĂLJĨŽƌŵŝƐƐŝŽŶƐ͕ϭϬϬϬŐĂůůŽŶƐͬĚĂLJĨŽƌ&ƵĞůŽŶƐƵŵƉƚŝŽŶ ^ƉĞĞĚ &ƵĞů WŽƉƵůĂƚŝŽŶ sDd dƌŝƉƐ &ƵĞůŽŶƐƵŵƉƚŝŽŶ &ƵĞůŽŶƐƵŵƉƚŝŽŶ dŽƚĂů&ƵĞůŽŶƐƵŵƉƚŝŽŶ sDd dŽƚĂůsDd DŝůĞƐWĞƌ'ĂůůŽŶ sĞŚŝĐůĞůĂƐƐ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϳϱ͘ϭϬϰϰϮϵϯϲ ϴϮϲϱ͘Ϭϵϳ ϭϱϬϮ͘ϲϴϵ ϭ͘ϵϯϲϮϴϲϭϰϱ ϭϵϯϲ͘Ϯϴϲϭϰϱ ϭϵϭϯϰϲϲ͘ϰϳϰ ϴϮϲϱ͘Ϭϵϳ ϭϯϲϱϲϮϳϯ͘Ϭϯ ϳ͘ϭϰ ,, ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϬϵϴϭϴ͘ϲϳϱϯ ϭϯϲϰϴϬϬϴ ϭϭϯϯϲϭϴ ϭϵϭϭ͘ϱϯϬϭϴϴ ϭϵϭϭϱϯϬ͘ϭϴϴ ϭϯϲϰϴϬϬϴ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϲϲϯϱϬϬϮ͘Ϯϵϱ Ϯ͘ϱϯнϬϴ ϯϭϯϱϮϰϳϳ ϳϵϳϭ͘ϮϰϰϬϯ ϳϵϳϭϮϰϰ͘Ϭϯ ϴϬϮϬϲϯϱ͘ϲϵϴ Ϯ͘ϱϯнϬϴ ϮϱϱϭϴϬϯϱϴ͘ϯ ϯϭ͘ϴϮ > ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϲϮϰϵϮ͘ϵϳϵϱϴ Ϯϰϲϵϴϭϲ ϮϵϳϬϴϲ͘ϲ ϰϵ͘ϯϵϭϲϲϴϱ ϰϵϯϵϭ͘ϲϲϴϱ Ϯϰϲϵϴϭϲ ŐŐƌĞŐĂƚĞ ůĞĐƚƌŝĐŝƚLJ ϭϱϬϳϬϬ͘ϯϵϳϭ ϲϮϯϳϭϬϲ ϳϱϭϱϲϲ Ϭ Ϭ ϲϮϯϳϭϬϲ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϳϱϴϰϲϳ͘ϲϰϴϭ ϮϳϴϭϮϵϵϲ ϯϱϬϰϱϲϯ ϭϬϮϯ͘ϵϭϯϬϬϲ ϭϬϮϯϵϭϯ͘ϬϬϲ ϭϬϮϰϮϳϵ͘ϰϲϲ ϮϳϴϭϮϵϵϲ ϮϳϴϮϭϰϬϱ͘Ϭϵ Ϯϳ͘ϭϲ >dϭ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϯϲϬ͘ϳϳϵϵϭϰϰ ϴϰϬϴ͘ϲϭϴ ϭϮϱϲ͘ϴϴ Ϭ͘ϯϲϲϰϱϵϰϳϳ ϯϲϲ͘ϰϱϵϰϳϲϵ ϴϰϬϴ͘ϲϭϴ ŐŐƌĞŐĂƚĞ ůĞĐƚƌŝĐŝƚLJ ϳϭϮϮ͘ϵϯϯϳϯ ϯϬϯϱϬϳ͘ϱ ϯϱϳϵϴ͘ϭϵ Ϭ Ϭ ϯϬϯϱϬϳ͘ϱ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϮϮϴϱϭϱϬ͘ϭϯϵ ϴϱϮϳϮϰϭϲ ϭϬϳϮϯϯϭϱ ϯϯϯϴ͘ϳϵϴϯϭϮ ϯϯϯϴϳϵϴ͘ϯϭϮ ϯϯϱϲϱϯϲ͘ϰϯϴ ϴϱϮϳϮϰϭϲ ϴϱϵϮϮϳϳϴ͘ϯϰ Ϯϱ͘ϲϬ >dϮ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϱϱϵϰ͘ϲϴϯϬϵ ϲϱϬϯϲϮ͘ϴ ϳϲϲϯϱ͘ϴϯ ϭϳ͘ϳϯϴϭϮϲϭϭ ϭϳϳϯϴ͘ϭϮϲϭϭ ϲϱϬϯϲϮ͘ϴ ŐŐƌĞŐĂƚĞ ůĞĐƚƌŝĐŝƚLJ ϮϴϴϬϵ͘ϲϯϳϯϱ ϵϭϳϱϵϮ͘ϴ ϭϰϱϰϬϱ͘ϰ Ϭ Ϭ ϵϭϳϱϵϮ͘ϴ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϭϳϰϵϭϬ͘ϯϴϰϳ ϲϮϭϲϲϰϯ ϮϲϬϱϵϬϰ ϱϴϯ͘ϯϴϱϭϳϯϲ ϱϴϯϯϴϱ͘ϭϳϯϲ ϴϭϭϱϲϯ͘ϭϬϮϮ ϲϮϭϲϲϰϯ ϭϭϮϭϭϯϵϱ͘ϳϵ ϭϯ͘ϴϭ >,dϭ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϮϱϱϰϱ͘ϬϴϮϮ ϰϵϵϰϳϱϯ ϭϱϳϵϭϵϵ ϮϮϴ͘ϭϳϳϵϮϴϱ ϮϮϴϭϳϳ͘ϵϮϴϱ ϰϵϵϰϳϱϯ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϯϬϭϬϮ͘ϳϱϯϮϰ ϭϬϯϰϱϲϵ ϰϰϴϰϴϲ͘Ϯ ϭϭϭ͘ϱϳϱϯϴϲϰ ϭϭϭϱϳϱ͘ϯϴϲϰ ϮϬϵϰϮϯ͘ϱϬϮϱ ϭϬϯϰϱϲϵ Ϯϵϲϵϱϵϵ͘ϬϬϴ ϭϰ͘ϭϴ >,dϮ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϱϬϬϬϯ͘ϭϯϭϭϲ ϭϵϯϱϬϯϬ ϲϮϴϵϳϲ͘ϱ ϵϳ͘ϴϰϴϭϭϲϭϴ ϵϳϴϰϴ͘ϭϭϲϭϴ ϭϵϯϱϬϯϬ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϯϬϱϬϰϰ͘ϱϭϰϭ ϮϭϬϰϲϮϰ ϲϭϬϬϴϵ ϱϳ͘ϴϰϵϬϭϴ ϱϳϴϰϵ͘Ϭϭϴ ϱϳϴϰϵ͘Ϭϭϴ ϮϭϬϰϲϮϰ ϮϭϬϰϲϮϯ͘ϲϱϳ ϯϲ͘ϯϴ Dz ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϭϱϴϵϴϲϮ͘ϳϬϯ ϱϱϲϴϰϭϴϴ ϳϯϱϰϴϲϬ Ϯϲϵϯ͘ϴϴϯϱϮϲ Ϯϲϵϯϴϴϯ͘ϱϮϲ Ϯϳϰϰϱϯϲ͘ϯϰϭ ϱϱϲϴϰϭϴϴ ϱϳϭϬϵϴϳϵ͘ϳϯ ϮϬ͘ϴϭ Ds ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϯϲϭϮϴ͘ϭϬϭϵ ϭϰϮϱϲϵϭ ϭϳϲϱϲϲ͘ϵ ϱϬ͘ϲϱϮϴϭϰϵϭ ϱϬϲϱϮ͘ϴϭϰϵϭ ϭϰϮϱϲϵϭ ŐŐƌĞŐĂƚĞ ůĞĐƚƌŝĐŝƚLJ ϭϲϯϳϲ͘ϲϳϲϱϯ ϱϯϳϱϵϭ͘ϳ ϴϯϰϳϱ͘ϵϱ Ϭ Ϭ ϱϯϳϱϵϭ͘ϳ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϯϰϲϳϵ͘ϱϬϱϰϮ ϯϯϬϬϰϮ͘ϵ ϯϰϲϵ͘ϯϯϴ ϲϯ͘ϮϲϮϵϱϭϮϯ ϲϯϮϲϮ͘ϵϱϭϮϯ ϳϰϴϵϯ͘Ϯϲϵϱϱ ϯϯϬϬϰϮ͘ϵ ϰϱϰϯϰϰ͘ϵϰϯϲ ϲ͘Ϭϳ D, ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϯϭϮϮ͘ϲϵϯϴϳ ϭϮϰϯϬϮ ϭϯϭϮ͘Ϯϲϵ ϭϭ͘ϲϯϬϯϭϴϯϮ ϭϭϲϯϬ͘ϯϭϴϯϮ ϭϮϰϯϬϮ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϮϱϲϮϰ͘ϯϭϱϭ ϭϯϲϯϲϵϰ ϱϭϮϲϵϭ͘ϯ Ϯϲϱ͘ϮϬϲϬϱϱϳ ϮϲϱϮϬϲ͘Ϭϱϱϳ ϵϴϵϵϳϱ͘ϲϰϮϱ ϭϯϲϯϲϵϰ ϵϰϴϰϯϭϳ͘ϳϲϴ ϵ͘ϱϴ D,d ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϮϮϭϮϰ͘ϰϴϴ ϴϭϮϬϲϮϯ ϭϮϮϭϴϱϴ ϳϮϰ͘ϳϲϵϱϴϲϴ ϳϮϰϳϲϵ͘ϱϴϲϴ ϴϭϮϬϲϮϯ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϱϵϱϱ͘Ϯϵϭϲϯϵ Ϯϰϱϳϳϰ ϭϭϵϭϱϯ͘ϱ ϰϴ͘ϬϳϳϱϬϲϴϵ ϰϴϬϳϳ͘ϱϬϲϴϵ ϴϲϮϲϱ͘ϴϴϳϲϭ Ϯϰϱϳϳϰ ϱϳϵϳϰϯ͘ϴϯϱϯ ϲ͘ϳϮ Kh^ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϰϮϴϲ͘ϵϰϬϬϵϯ ϯϯϯϵϲϵ͘ϴ ϰϭϱϱϴ͘Ϯϵ ϯϴ͘ϭϴϴϯϴϬϳϮ ϯϴϭϴϴ͘ϯϴϬϳϮ ϯϯϯϵϲϵ͘ϴ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ Ϯϳϴϯ͘ϲϰϯϬϲϴ ϭϭϮϭϴϵ͘ϲ ϭϭϭϯϰ͘ϱϳ ϭϮ͘ϭϵϰϳϰϲϵϮ ϭϮϭϵϰ͘ϳϰϲϵϮ ϯϵϲϯϴ͘ϴϱϵϯϱ ϭϭϮϭϴϵ͘ϲ ϯϮϯϬϰϯ͘ϱϮϬϯ ϴ͘ϭϱ ^h^ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϲϲϳϭ͘ϴϮϱϳϭϲ ϮϭϬϴϱϯ͘ϵ ϳϲϵϵϭ͘ϵϰ Ϯϳ͘ϰϰϰϭϭϮϰϮ Ϯϳϰϰϰ͘ϭϭϮϰϮ ϮϭϬϴϱϯ͘ϵ ŐŐƌĞŐĂƚĞ 'ĂƐŽůŝŶĞ ϵϱϳ͘ϳϲϴϲϭϴϰ ϴϵϳϴϮ͘ϲϯ ϯϴϯϭ͘Ϭϳϰ ϭϳ͘ϲϮϰϭϲϯϮϳ ϭϳϲϮϰ͘ϭϲϯϮϳ ϭϳϴϲϯ͘ϲϲϯϳϴ ϴϵϳϴϮ͘ϲϯ ϵϭϭϵϵ͘Ϯϱϯϯ ϱ͘ϭϭ hh^ ŐŐƌĞŐĂƚĞ ŝĞƐĞů ϭϯ͘ϬϬϬϰϲϬϵϱ ϭϰϭϲ͘ϲϮϮ ϱϮ͘ϬϬϭϴϰ Ϭ͘ϮϯϵϱϬϬϱϬϵ Ϯϯϵ͘ϱϬϬϱϬϵϯ ϭϰϭϲ͘ϲϮϮ ŐŐƌĞŐĂƚĞ ůĞĐƚƌŝĐŝƚLJ ϭϲ͘ϭϭϲϵϯϴϴϲ ϭϯϮϬ͘ϭϲϯ ϲϰ͘ϰϲϳϳϲ Ϭ ϭϯϮϬ͘ϭϲϯ 2201 N. Grand Avenue #10098 | Santa Ana, CA 92711-0098 | (714) 716-5050 www.ELMTConsulting.com December 12, 2021 THE ALTUM GROUP Attention: Lauren Reese 44-600 Village Court, Suite 100 Palm Desert, California 92260 SUBJECT: Biological Resources Report Update for the Proposed Crossings at Palm Desert Project Located in the City of Palm Desert, Riverside County, California. Introduction This report contains the findings of ELMT Consulting’s (ELMT) biological resources investigation for the proposed Crossings at Palm Desert project (project site or site) located in the City of Palm Desert, Riverside County, California. The biological due diligence investigation was conducted by ELMT biologist Jacob H. Lloyd Davies on November 3, 2021 to document baseline conditions and to determine the potential for special-status plant and wildlife species to occur on the project site that could pose a constraint to implementation of the proposed project. This report provides a detailed assessment of the suitability of the onsite habitat to support special-status plant and wildlife species that were identified by the California Natural Diversity Database (CNDDB) and other electronic databases as potentially occurring in the vicinity of the proposed project site. Special attention was given to the suitability of the on-site habitat to support burrowing owl (Athene cunicularia) and other species protected under the Coachella Valley Multiple Species Habitat Conservation Plan (CVMSHCP), and potential jurisdictional drainage features. Project Location The project site is generally located south of Interstate 10, north and east of State Route 111 in the City of Palm Desert, Riverside County, California. The site is depicted on the Cathedral City quadrangle of the United States Geological Survey’s (USGS) 7.5-minute topographic map series within Section 29 of Township 4 South, Range 6 East. Specifically, the project site is bounded to the north by Dick Kelly Drive, to the west by Gateway Drive, and to the east by Cortesia Way, and is located north of Dolce Way within Assessor’s Parcel Numbers 6941-300-17, -18, -19, and -20. Refer to Exhibits 1-3 in Attachment A. Project Description The project proposes the development of a gated affordable housing community on approximately 11.8 acres. The proposed community will consist of 176 units, 330 parking spaces, and associated infrastructure and amenities. Refer to Attachment B, Site Plan. December 12, 2021 Page 2 Crossings at Palm Desert Biological Resources Assessment Methodology Literature Review Prior to conducting the field investigation, a literature review and records search was conducted for special- status biological resources potentially occurring on or within the vicinity of the project site. Previously recorded occurrences of special-status plant and wildlife species and their proximity to the project site were determined through a query of the California Department of Fish and Wildlife’s (CDFW’s) CNDDB Rarefind 5, the California Native Plant Society’s (CNPS) Electronic Inventory of Rare and Endangered Vascular Plants of California, Calflora Database, compendia of special-status species published by CDFW, and the United States Fish and Wildlife Service (USFWS) species listings. Literature detailing biological resources previously observed in the vicinity of the project site and historical land uses were reviewed to understand the extent of disturbances to the habitats on-site. Standard field guides and texts on special-status and non-special-status biological resources were reviewed for habitat requirements, as well as the following resources: x CDFW 2012 Staff Report on Burrowing Owl Mitigation; x Coachella Valley Multiple Species Habitat Conservation Plan; x Google Earth Pro historic aerial imagery (1985-2021); x United States Department of Agriculture (USDA) Natural Resource Conservation Service (NRCS), Soil Survey 1; and x USFWS Critical Habitat designations for Threatened and Endangered Species. The literature review provided a baseline from which to inventory the biological resources potentially occurring on the project site. Additional recorded occurrences of these species found on or near the project site were derived from database queries. The CNDDB ArcGIS database was used, in conjunction with ArcGIS software, to locate the nearest occurrence and determine the distance from the project site. Habitat Assessment/Field Investigation ELMT biologist Jacob H. Lloyd Davies inventoried and evaluated the extent and conditions of the plant communities found within the boundaries of the project site and a 200-foot buffer on September 14, 2021. Plant communities identified on aerial photographs during the literature review were verified by walking meandering transects through the plant communities and along boundaries between plant communities. The plant communities were evaluated for their potential to support special-status plant and wildlife species. In addition, field staff identified any natural corridors and linkages that may support the movement of wildlife through the area. Special attention was given to special-status habitats and/or undeveloped areas, which have higher potentials to support special-status plant and wildlife species. All plant and wildlife species observed, as well as dominant plant species within each plant community, were recorded. Wildlife detections were made through observation of scat, trails, tracks, burrows, nests, and/or visual and aural observation. In addition, site characteristics such as soil condition, topography, 1 A soil series is defined as a group of soils with similar profiles developed from similar parent materials under comparable climatic and vegetation conditions. These profiles include major horizons with similar thickness, arrangement, and other important characteristics, which may promote favorable conditions for certain biological resources. December 12, 2021 Page 3 Crossings at Palm Desert Biological Resources Assessment hydrology, anthropogenic disturbances, indicator species, condition of on-site plant communities, and presence of potential jurisdictional drainage and/or wetland features were noted. Soil Series Assessment On-site and adjoining soils were researched prior to the field visit using the USDA NRCS Soil Survey for Riverside County, California. In addition, a review of the local geological conditions and historical aerial photographs was conducted to assess the ecological changes the project site has undergone. Plant Communities Plant communities were mapped using 7.5-minute USGS topographic base maps and aerial photography. The plant communities were delineated on an aerial photograph, classified in accordance with those described in the MSHCP, and then digitized into GIS Arcview. The Arcview application was used to compute the area of each plant community in acres. Plants Common plant species observed during the field survey were identified by visual characteristics and morphology in the field and recorded in a field notebook. Unusual and less-familiar plants were photographed in the field and identified in the laboratory using taxonomic guides. Taxonomic nomenclature used in this study follows the 2012 Jepson Manual (Hickman 2012). In this report, scientific names are provided immediately following common names of plant species (first reference only). Wildlife Wildlife species detected during field surveys by sight, calls, tracks, scat, or other sign were recorded during surveys in a field notebook. Field guides were used to assist with identification of wildlife species during the survey included The Sibley Field Guide to the Birds of Western North America (Sibley 2003), A Field Guide to Western Reptiles and Amphibians (Stebbins 2003), and A Field Guide to Mammals of North America (Reid 2006). Although common names of wildlife species are fairly well standardized, scientific names are provided immediately following common names in this report (first reference only). Jurisdictional Drainages and Wetlands Aerial photography was reviewed prior to conducting a field investigation in order to locate and inspect any potential natural drainage features, ponded areas, or water bodies that may fall under the jurisdiction of the United States Army Corps of Engineers (Corps), Regional Water Quality Control Board (Regional Board), or CDFW. In general, surface drainage features indicated as blue-line streams on USGS maps that are observed or expected to exhibit evidence of flow are considered potential riparian/riverine habitat and are also subject to state and federal regulatory jurisdiction. In addition, ELMT reviewed jurisdictional waters information through examining historical aerial photographs to gain an understanding of the impact of land-use on natural drainage patterns in the area. The USFWS National Wetland Inventory (NWI) and Environmental Protection Agency (EPA) Water Program “My Waters” data layers were also reviewed to determine whether any hydrologic features and wetland areas have been documented on or within the vicinity of the project site. December 12, 2021 Page 4 Crossings at Palm Desert Biological Resources Assessment Topography and Soils The project site is located at an approximate elevation of 217 to 262 feet above mean sea level and slopes generally from southwest to northeast. Onsite topography is generally flat in the center with downward slopes towards the eastern, northern, and western boundaries. Based on the NRCS USDA Web Soil Survey, the project site is underlain by Myoma fine sand (5 to 15 percent slopes). Refer to Exhibit 4, Soils, in Attachment A. The majority of soils onsite are relatively undisturbed with the exception of those along site boundaries which have been mechanically disturbed and compacted during the development of adjacent paved walkways and thoroughfares. In addition, some soil compaction is present along remnant pathways that were created prior to the development of neighboring parcels. Existing Site Condition The project site occurs in an area of the City of Palm Desert that has undergone a conversion from natural habitats to residential, recreational, and commercial developments. The site is bounded to the north by Dick Kelly Drive with residential development and graded pads beyond; to the west by Gateway Drive with undeveloped land beyond; to the east by Cortesia Way with residential development beyond; and to the south by undeveloped land. Undeveloped land in the immediate vicinity supports similar conditions to those observed onsite. The site itself supports undeveloped, vacant land that is relatively undisturbed. Vegetation The project site supports primarily undeveloped, vacant land that is generally consistent with naturally occurring native habitats in the surrounding area. Refer to Attachment C, Site Photographs, for representative site photographs. The project site supports one (1) plant community: creosote bush scrub. In addition, the site supports one (1) land cover type that would be classified as disturbed (refer to Exhibit 5, Vegetation in Attachment A). The creosote bush scrub plant community found onsite is dominated by creosote (Larrea tridentata) and supports limited additional woody perennials and an herbaceous understory dominated by Mediterranean grass (Schismus barbatus). Common plant species observed during the field investigation include iodine bush (Allenrolfea occidentalis), desert croton (Croton californicus), sweetbush (Bebbia juncea), fanleaf crinklemat (Coldenia plicata), Spanish needle (Palafoxia arida), desert tea (Ephedra californica), desert dicoria (Dicoria canescens), sandpaper plant (Petalonyx thurberi), dyebush (Psorothamnus emoryi), and mustard (Brassica tournefortii). Refer to Attachment B, Site Photographs, for representative site photographs. The project site also supports disturbed land that has been impacted by adjacent development and varying disturbances that regular plant distribution and diversity is no longer natural. Disturbed areas are primarily isolated to the eastern, northern, and western boundaries, and are somewhat present where vehicle access has degraded soil conditions. Plant species observed in disturbed areas of the project site include Russian thistle (Salsola tragus), dyebush, desert croton, and mustard. Wildlife Plant communities provide foraging habitat, nesting/denning sites, and shelter from adverse weather or predation. This section provides a discussion of those wildlife species that were observed or are expected to occur within the project site. The discussion is to be used a general reference and is limited by the season, December 12, 2021 Page 5 Crossings at Palm Desert Biological Resources Assessment time of day, and weather conditions in which the field survey was conducted. Wildlife detections were based on calls, songs, scat, tracks, burrows, and direct observation. Fish No fish or hydrogeomorphic features (e.g., creeks, ponds, lakes, reservoirs) that would provide suitable habitat for fish were observed on or within the vicinity of the project site. Therefore, no fish are expected to occur and are presumed absent from the site. Amphibians No amphibians or hydrogeomorphic features that would provide suitable habitat for amphibian species were observed on or within the vicinity of the project site. Therefore, no amphibians are expected to occur and are presumed absent from the site. Reptiles The project site provides suitable foraging and cover habitat for reptilian species adapted to routine human disturbance and desert environments. The only reptilian species observed during the field investigation were desert iguana (Diposaurus dorsalis) and western long-tailed brush lizard (Urosaurus graciosus graciosus). Common reptile species that could be expected to occur include Great Basin whiptail (Aspidoscelis tigris tigris), western side-blotched lizard (Uta stansburiana elegans), Great Basin fence lizard (Sceloporus occidentalis longipes), and sidewinder (Crotalus cerastes). Due to the limited availability of adjacent open space, species with large foraging ranges are not expected to occur. Birds The project site provides suitable foraging and nesting habitat for avian species adapted to routine human disturbance and desert environments. Bird species detected during the field investigation include mourning dove (Zenaida macroura), common raven (Corvus corax), rock pigeon (Columba liva), house finch (Haemorhous mexicanus), and verdin (Auriparus flaviceps). Common avian species that could be expected to occur include Eurasian collard dove (Streptopelia decaocto), America crow (Corvus brachyrhynchos), red-tailed hawk (Buteo jamaicensis), Anna’s hummingbird (Calypte anna). Mammals The project site provides suitable foraging and denning habitat for mammalian species adapted to routine human disturbance and desert environments. However, most mammal species are nocturnal and are difficult to observe during a diurnal field visit. Common mammalian species that could be expected to occur include desert cottontail (Sylvilagus audubonii) and coyote (Canis latrans). Nesting Birds and Raptors No active nests or birds displaying nesting behavior were observed during the field survey, which was conducted outside of the breeding season. Although subjected to routine disturbance, the ornamental vegetation found on-site has the potential to provide suitable nesting habitat for year-round and seasonal avian residents, as well as migrating songbirds that could occur in the area that area adapted to urban environments. (Charadrius vociferans). No raptors are expected to nest on-site due to lack of suitable nesting opportunities. December 12, 2021 Page 6 Crossings at Palm Desert Biological Resources Assessment Nesting birds are protected pursuant to the Migratory Bird Treaty Act (MBTA) and California Fish and Game Code (Sections 3503, 3503.5, 3511, and 3513 prohibit the take, possession, or destruction of birds, their nests or eggs). If construction occurs between February 1st and August 31st, a pre-construction clearance survey for nesting birds should be conducted within three (3) days of the start of any vegetation removal or ground disturbing activities to ensure that no nesting birds will be disturbed during construction. Migratory Corridors and Linkages Habitat linkages provide connections between larger habitat areas that are separated by development. Wildlife corridors are similar to linkages but provide specific opportunities for animals to disperse or migrate between areas. A corridor can be defined as a linear landscape feature of sufficient width to allow animal movement between two comparatively undisturbed habitat fragments. Adequate cover is essential for a corridor to function as a wildlife movement area. It is possible for a habitat corridor to be adequate for one species yet still inadequate for others. Wildlife corridors are features that allow for the dispersal, seasonal migration, breeding, and foraging of a variety of wildlife species. Additionally, open space can provide a buffer against both human disturbance and natural fluctuations in resources. In accordance with the CVMSHCP, the project site has not been identified as occurring in a wildlife corridor or linkage. The site has limited adjacent open space and available open space is entirely surrounded by existing development, limiting its connectivity to surrounding habitats. In addition, there are no riparian corridors, creeks, or useful patches of steppingstone habitat (natural areas) within or connecting the site to a recognized wildlife corridor or linkage. As such, implementation of the proposed project is not expected to impact wildlife movement opportunities. Therefore, impacts to wildlife corridors or linkages are not expected to occur. Jurisdictional Areas There are three key agencies that regulate activities within inland streams, wetlands, and riparian areas in California. The Corps Regulatory Branch regulates discharge of dredge or fill materials into “waters of the United States” pursuant to Section 404 of the Clean Water Act (CWA) and Section 10 of the Rivers and Harbors Act. Of the State agencies, the CDFW regulates alterations to streambed and bank under Fish and Wildlife Code Sections 1600 et seq., and the Regional Board regulates discharges into surface waters pursuant to Section 401 of the CWA and the California Porter-Cologne Water Quality Control Act. No jurisdictional drainage and/or wetland features were observed on the project site or within the during the field investigation. Further, no blueline streams have been recorded on the project site based on the review of the NWI and topographic maps. Therefore, development of the project will not result in impacts to Corps, Regional Board, or CDFW jurisdiction and regulatory approvals will not be required. Special-Status Biological Resources The CNDDB was queried for reported locations of special-status plant and wildlife species as well as natural communities of special concern in the Cathedral City USGS 7.5-minute quadrangle. This singular quadrangle was used due to on-site conditions and surrounding development. A search of published records within this quadrangle was conducted using the CNDDB Rarefind 5 online software and the CDFW BIOS database and the CNPS Inventory of Rare and Endangered Plants of California that supplied information regarding the distribution and habitats of vascular plants in the vicinity of the project site. The habitat December 12, 2021 Page 7 Crossings at Palm Desert Biological Resources Assessment assessment evaluated the conditions of the habitat(s) within the boundaries of the project site to determine if the existing plant communities, at the time of the survey, have the potential to provide suitable habitat(s) for special-status plant and wildlife species. The literature search identified thirteen (13) special-status plant species, sixteen (16) special-status wildlife species, and two (2) special-status plant community were identified as having potential to occur within the Cathedral City quadrangle. Special-status plant and wildlife species were evaluated for their potential to occur within the project site based on habitat requirements, availability and quality of suitable habitat, and known distributions. Species determined to have the potential to occur within the general vicinity are presented in Table D-1: Potentially Occurring Special-Status Biological Resources, provided in Attachment D. Refer to Table D-1 for a determination regarding the potential occurrence of special-status plant and wildlife species within the project site. Special-Status Plants According to the CNDDB and CNPS, sixteen (16) special-status plant species have been recorded in the Cathedral City quadrangle (refer to Attachment D). No special-status plants were observed on the project site during the field investigation. Based on habitat requirements for specific species and the availability and quality of habitats needed by each special-status plant species, it was determined that the project site has a moderate or higher potential to support Coachella Valley milk-vetch, a CVMSHCP Covered Species. In addition, it was determined that the site has a moderate to low potential to support the following special- status plant species that are not covered under the MSHCP, including Borrego milk-vetch (Astragalus lentiginosus var. borreganus), ribbed cryptantha (Johnstonella costata), winged cryptantha (Johnstonella holoptera), pointed dodder (Cuscuta californica var. apiculata), Arizona spurge (Euphorbia arizonica), andflat-seeded spurge (Euphorbia platysperma). All other special-status plant species covered and non- covered are presumed absent. Descriptions of species determined to have a moderate or higher potential to occur within the project site, as well as of those covered species that are known to occur within the general vicinity of the project site, are provided below. Coachella Valley Milk-vetch Coachella Valley milk-vetch can be either an annual or perennial herb that blooms between February and May. It is federally listed as endangered and is designated by the CNPS with the Rare Plant Rank 1B.2, indicating that is rare, threatened, or endangered in California and elsewhere, and is considered fairly threatened in California, with 20-80% of its known occurrences threatened. It is covered under the MSHCP. It is endemic to California and is only known from Riverside County. It occurs in sandy soils within desert dunes and Sonoran desert scrub, where it typically grows at elevations between 131 and 2,149 feet. Coachella Valley milk-vetch is known to occur in many locations throughout the Coachella Valley, and the project site is immediately adjacent to designated Critical Habitat for this species (78 Federal Register [FR] 10449 10497). Since Coachella Valley milk-vetch is a covered species under the CVMSHCP, no further surveys or additional mitigation measures will be required for impacts to this species. Borrego Milk-vetch Borrego milk-vetch is an annual herb that blooms between February and May. It is not state or federally listed. However, it is designated by the CNPS with the Rare Plant Rank 4.3, indicating that it is a plant of limited distribution and is not very threatened in California, with less than 20% of its known occurrences December 12, 2021 Page 8 Crossings at Palm Desert Biological Resources Assessment threatened. It is not endemic to California, but in California it is known to occur in Imperial, Riverside, San Bernardino, and San Diego Counties, where it can be found in sandy soils in Mojavean and Sonoran Desert scrub between 98 and 1,050 feet in elevation. Borrego milk-vetch was determined to have a moderate potential to occur on the project site. Pointed Dodder Pointed dodder is an annual parasitic vine that blooms between February and August. It is not state or federally listed. However, it is designated by the CNPS with the Rare Plant Rank 3, indicating that it is under review and that more information about it is needed. It is not endemic to California, but in California it is known to occur in Riverside and San Bernardino Counties, where it can be found in Mojavean and Sonoran Desert scrub between 0 and 1,640 feet in elevation. Pointed dodder was determined to have a moderate potential to occur on the project site. Arizona Spurge Arizona spurge is a perennial herb that blooms between March and April. It is not state or federally listed. However, it is designated by the CNPS with the Rare Plant Rank 2B.3, indicating that it is rare, threatened, or endangered in California and more common elsewhere, but is still not very threatened in California, with less than 20% of its known occurrences threatened. It is not endemic to California, but in California it is known to occur in Imperial, Riverside, and San Diego Counties, where it can be found in sandy Sonoran desert scrub between 164 and 984 feet in elevation. Arizona spurge was determined to have a moderate potential to occur on the project site. Flat-seeded Spurge Flat-seeded spurge is an annual herb that blooms between February and September. It is not state or federally listed. However, it is designated by the CNPS with the Rare Plant Rank 1B.1, indicating that it is indicating that is rare, threatened, or endangered in California and elsewhere, and is seriously threatened in California. It is not endemic to California, but in California it is known to occur in Imperial, Riverside, and San Diego Counties, where it can be found in sandy Sonoran desert scrub between 213 and 328 feet in elevation. Flat-seeded spurge was determined to have a moderate potential to occur on the project site. Ribbed Cryptantha Ribbed cryptantha is an annual herb that blooms between February and May. It is not state or federally listed. However, it is designated by the CNPS with the Rare Plant Rank 4.3, indicating that it is a plant of limited distribution and is not very threatened in California, with less than 20% of its known occurrences threatened. It is not endemic to California, but in California it is known to occur in Imperial, Inyo, Riverside, San Bernardino, and San Diego Counties, where it can be found in sandy soils in desert dunes and Mojavean and Sonoran Desert scrub between 197 and 1,640 feet in elevation. Ribbed cryptantha was determined to have a moderate potential to occur on the project site. Winged Cryptantha Ribbed cryptantha is an annual herb that blooms between March and April. It is not state or federally listed. However, it is designated by the CNPS with the Rare Plant Rank 4.3, indicating that it is a plant of limited distribution and is not very threatened in California, with less than 20% of its known occurrences threatened. December 12, 2021 Page 9 Crossings at Palm Desert Biological Resources Assessment It is not endemic to California, but in California it is known to occur in Imperial, Inyo, Riverside, San Bernardino, and San Diego Counties, where it can be found in Mojavean and Sonoran Desert scrub between 328 and 5,545 feet in elevation. Winged cryptantha was determined to have a moderate potential to occur on the project site. Special-Status Wildlife According to the CNDDB, sixteen (16) special-status wildlife species have been reported in the Cathedral City quadrangle (refer to Attachment D). No special-status wildlife species were observed on-site during the field investigation. Based on habitat requirements for specific species and the availability and quality of on-site habitats, it was determined that the project site has a moderate potential to support prairie falcon (Falco mexicanus) and loggerhead shrike (Lanius ludovicianus); and a low potential to support Coachella giant sand treader cricket (Macrobaenetes valgum), Palm Springs pocket mouse (Perognathus longimembris bangsi), and Coachella Valley fringe-toed lizard (Uma inornata). It was further determined that all other special-status wildlife species known to occur in the vicinity of the site do not have potential to occur and are presumed to be absent. Based on regional significance, listing status, coverage under the CVMSHCP, Coachella giant sand treader cricket, Palm Springs pocket mouse, and Coachella Valley fringe-toed lizard are discussed below. Coachella Giant Sand Treader Cricket The Coachella giant sand treader cricket has no state or federal designation but is covered under the CVMSHCP. Its known range extends through the western Coachella Valley to approximately two miles west of the City of Indio. This species is dependent on active dunes and ephemeral sand fields in the western Coachella Valley. It is strongly correlated with windblown habitats dominated by creosote bush, burrobush (Ambrosia dumosa), honey mesquite (Prosopis glandulosa), Mormon tea (Ephedra spp.), desert willow (Chilopsis linearis), and sandpaper bush (Mortonia scabrella). Stabilized sandy environments are avoided. This species is often detected via their charastic delta-shaped burrow excavations and tracks. Adults are active in early spring and burrow underground again my mid- to late spring, and juveniles emerge in late fall. Coachella giant sand treader cricket was determined to have a low potential to occur on the project site. Since Coachella giant sand treader cricket is a covered species under the CVMSHP, no further surveys or additional mitigation measures will be required for impacts to this species, if present. Palm Springs Pocket Mouse The Palm Springs pocket mouse is designated by the CDFW as a species of special concern and is also covered under the CVMSHCP. It is endemic to the Coachella Valley, and while its current distribution is not well known, it was historically present from the San Gorgonio Pass to Joshua Tree National Park and south to Borrego Springs. This species generally occurs in creosote scrub, desert scrub, and grasslands with loose and/or sandy soils and sparse to moderate vegetative cover in areas dominated by creosote bush, brittlebush (Encelia farinosa), burrobush, and ephedra (Ephedra californica). They are likely dormant generally between October and March but may emerge periodically to feed on seed caches. Breeding occurs from January to August, peaking between March and May. Palm Springs pocket mouse was determined to have a low potential to occur on the project site. Since Palm Springs pocket mouse is a covered species under the CVMSHP, no further surveys or additional mitigation measures will be required for impacts to this species, if present. December 12, 2021 Page 10 Crossings at Palm Desert Biological Resources Assessment Coachella Valley Fringe-toed Lizard Coachella Valley fringe-toed lizard is designated by the USFWS as threatened under the ESA and by the CDFW as endangered under the CESA. It is covered under the MSHCP. This species is only found in the Coachella Valley, and occurs on areas containing fine, windblown sands. They are rarely, if ever, found outside of this habitat and do not occur on stabilized sands. Vegetative cover is sparse to moderate and is usually dominated by creosote bush, indigo bush, honey mesquite, and four-winged saltbush (Atriplex canescens). This species is typically active from spring through fall, especially between April and October. Up to three clutches of eggs are laid between May and September, with juveniles emerging between August and October. Coachella Valley fringe-toed lizard was determined to have a moderate potential to occur on the project site. Since Coachella Valley fringe-toed lizard is a covered species under the CVMSHP, no further surveys or additional mitigation measures will be required for impacts to this species, if present. Special-Status Plant Communities The CNDDB lists one (1) special-status plant community as being identified within the Cathedral City quadrangle: Desert Fan Palm Oasis Woodland. Based on the results of the field investigation, no special- status plant communities were observed onsite. Therefore, no special-status plant communities will be impacted by project implementation. Critical Habitat Under the federal Endangered Species Act, “Critical Habitat” is designated at the time of listing of a species or within one year of listing. Critical Habitat refers to specific areas within the geographical range of a species at the time it is listed that include the physical or biological features that are essential to the survival and eventual recovery of that species. Maintenance of these physical and biological features requires special management considerations or protection, regardless of whether individuals or the species are present or not. All federal agencies are required to consult with the United States Fish and Wildlife Service (USFWS) regarding activities they authorize, fund, or permit which may affect a federally listed species or its designated Critical Habitat. The purpose of the consultation is to ensure that projects will not jeopardize the continued existence of the listed species or adversely modify or destroy its designated Critical Habitat. The designation of Critical Habitat does not affect private landowners, unless a project they are proposing is on federal lands, uses federal funds, or requires federal authorization or permits (e.g., funding from the Federal Highways Administration or a CWA Permit from the Corps). If a there is a federal nexus, then the federal agency that is responsible for providing the funding or permit would consult with the USFWS. The project site is not located within federally designated Critical Habitat (refer to Exhibit 6, Critical Habitat, in Attachment A). The nearest designated Critical Habitat to the site is located approximately 0.73 miles to the northeast for Coachella Valley fringe-toed lizard, beyond existing urban development and Interstate 10. Therefore, the loss or adverse modification of Critical Habitat will not occur as a result of the proposed project and consultation with the USFWS will not be required for implementation of the proposed project. Coachella Valley MSHCP The proposed project was reviewed to determine consistency with the CVMSHCP. Geographic Information System (GIS) software was utilized to map the project site in relation to the CVMSHCP including conservation areas, corridors and linkages, and sand transport areas. The CVMSHCP requires that local December 12, 2021 Page 11 Crossings at Palm Desert Biological Resources Assessment permittees, such as the City of Desert Hot Springs, comply with various protective measures for covered species, communities, essential ecological processes, and biological corridors. In addition, certain projects may be subject to local development mitigation fees, a Joint Project Review Process, or other conservation or implementation measures. The project site is located within the boundaries of the CVMSHCP Area, but is not located within any Conservation Areas, Preserves, Cores, or Linkages (refer to Exhibit 7, CVMSHCP Conservation Areas in Attachment A). The proposed project is not listed as a planned “Covered Activity” under the published CVMSHCP, but is still considered to be a current Covered Activity pursuant to Section 7.1 of the CVMSHCP. According to Section 7.1 of the CVMSHCP, take authorization will be provided for certain activities that take place outside of Conservation Areas including “new projects approved pursuant to county and city general plans, transportation improvement plans for roads in addition to those addressed in Section 7.2, master drainage plans, capital improvement plans, water and waste management plans, the County’s adopted Trails Master Plan, and other plans adopted by the Permittees.” As a Covered Activity located outside designated conservation areas, construction of the proposed project is expected to be consistent with the applicable avoidance, minimization, and mitigation measures described in Section 4.4 of the CVMSHCP (refer to Attachment F, Section 4.4 of the CVMSHCP). Since the proposed project is considered a Covered Activity under Section 7.1 of the CVMSHCP, no further avoidance, minimization, and mitigation measures are required, and the project is in compliance with the CVMSHCP. The CVMSHCP does not identify modeled habitat for any covered species as occurring within the project site. Further, based on the results of the field investigation, the project site supports creosote bush scrub and disturbed land that has been subjected to a variety of anthropogenic disturbances. These disturbances have reduced, if not eliminated, the ability of the project site to provide suitable habitat for CVMSHCP Covered species. Due to the limited project footprint, no impacts to CVMSHCP Covered Species are expected to occur from project implementation. Conclusion and Recommendations Based literature review and field survey, and existing site conditions discussed in this report, implementation of the project will have no significant impacts on federally or State listed species known to occur in the general vicinity of the project site. Additionally, the project will have no effect on designated Critical Habitat or regional wildlife corridors/linkage because none exists within the area. No jurisdictional drainage and/or wetland features were observed on the project site during the field investigation. No further surveys are recommended. With completion of the recommendations provided below, no impacts to year- round, seasonal, or special-status avian residents or special-status species will occur from implementation of the proposed project. Special-Status Plant Species No special-status plant species were observed during the field investigation. With the exception of Coachella Valley milk-vetch, the aforementioned special-status plant species are not federally or state listed, and are CNPS Rare Plant Rank 1B.1, 2B.3, 3, or 4.3 species. In an effort to increase coverage for unlisted but regionally sensitive plants under the California Environmental Quality Act (CEQA), the California Native Plant Society began publishing sensitivity rankings for special-status plant species, and December 12, 2021 Page 12 Crossings at Palm Desert Biological Resources Assessment were not recognized as a special-status species of local concern by the MSHCP. Therefore, these species do not rise to the level of a species of concern under CEQA. Project impacts to these special-status plant species, if present, would therefore be less than significant, and no mitigation is required. Special-Status Wildlife Species No special-status wildlife species were observed onsite during the field investigation. Loggerhead shrike and prairie falcon are state or federally listed as threatened or endangered. In order to ensure impacts to these avian species do not occur from implementation of the proposed project, a pre-construction nesting bird clearance survey shall be conducted prior to ground disturbance. As a condition of approval, with implementation of the pre-construction nesting bird clearance survey, impacts to special-status avian species will be less than significant and no mitigation will be required. Coachella Valley fringe-toed lizard, Coachella giant sand treader cricket, and Palm Springs pocket mouse are covered species under the CVMSHCP and no further surveys will be required. Further, due to the limited scope of work, and small project footprint, if present, the adjacent habitats provide suitable refuge habitat for these species to temporarily move into. No impacts to these species are expected to occur. The following shall be implemented prior to ground disturbing activities as a condition of approval as described below: Migratory Bird Treaty Act and Fish and Game Code Nesting birds are protected pursuant to the Migratory Bird Treaty Act (MBTA) and California Fish and Game Code (Sections 3503, 3503.5, 3511, and 3513 prohibit the take, possession, or destruction of birds, their nests or eggs). In order to protect migratory bird species, a nesting bird clearance survey should be conducted prior to any ground disturbance or vegetation removal activities that may disrupt the birds during the nesting season. If construction occurs between February 1st and August 31st, a pre-construction clearance survey for nesting birds should be conducted within three (3) days of the start of any vegetation removal or ground disturbing activities to ensure that no nesting birds will be disturbed during construction. The biologist conducting the clearance survey should document a negative survey with a brief letter report indicating that no impacts to active avian nests will occur. If an active avian nest is discovered during the pre-construction clearance survey, construction activities should stay outside of a no-disturbance buffer. The size of the no-disturbance buffer will be determined by the wildlife biologist and will depend on the level of noise and/or surrounding anthropogenic disturbances, line of sight between the nest and the construction activity, type and duration of construction activity, ambient noise, species habituation, and topographical barriers. These factors will be evaluated on a case-by-case basis when developing buffer distances. Limits of construction to avoid an active nest will be established in the field with flagging, fencing, or other appropriate barriers; and construction personnel will be instructed on the sensitivity of nest areas. A biological monitor should be present to delineate the boundaries of the buffer area and to monitor the active nest to ensure that nesting behavior is not adversely affected by the construction activity. Once the young have fledged and left the nest, or the nest otherwise becomes inactive under natural conditions, construction activities within the buffer area can occur. Riparian Habitat and Special-Status Natural Communities December 12, 2021 Page 13 Crossings at Palm Desert Biological Resources Assessment No jurisdictional drainage and/or wetland features were observed within the project site. Therefore, development of the proposed project will not result in impacts to Corps, Regional Board, or CDFW jurisdiction and regulatory approvals will not be required. No special-status natural communities were observed within the boundaries of the project site. Therefore, no special-status natural communities will be impacted by project implementation. Wildlife Corridors and Linkages The project site has not been identified as occurring in a wildlife corridor or linkage. The site has limited adjacent open space and available open space is entirely surrounded by existing development, limiting its connectivity to surrounding habitats. In addition, there are no riparian corridors, creeks, or useful patches of steppingstone habitat (natural areas) within or connecting the site to a recognized wildlife corridor or linkage. As such, implementation of the proposed project is not expected to impact wildlife movement opportunities. Therefore, impacts to wildlife corridors or linkages are not expected to occur. Local, Regional, and State Plans The project site is located within the CVMSHCP, but is not located within any conservation areas. As a Covered Activity located outside designated conservation areas, construction of the proposed project is expected to implement the applicable regulatory complinace measures described in Section 4.4 of the CVMSHCP (see Attachment F). With implementation of these measures, the proposed project would be fully consistent with the biological goals and objectives of the CVMSHCP. Please do not hesitate to contact Tom McGill at (951) 285-6014 or tmcgill@elmtconsulting.com or Travis McGill at (909) 816-1646 or travismcgill@elmtconsulting.com should you have any questions regarding this proposal. Sincerely, Thomas J. McGill, Ph.D. Travis J. McGill Managing Director Director Attachments: A.Project Exhibits B.Site Plan C.Site Photographs D.Potentially Occurring Special-Status Biological Resources E.Regulations F.Section 4.4 of the CVMSHCP Attachment A Project Exhibits ^_ RIVERSIDE SAN BERNARDINO SAN DIEGO IMPERIAL Regional Vicinity CROSSINGS AT PALM DESERT BIOLOGICAL RESOURCES REPORT Exhibit 1 O Source: World Street Map, Riverside County 05102.5 Miles PROJECT LOCATION ^_ PROJECT LOCATION Site Vicinity CROSSINGS AT PALM DESERT BIOLOGICAL RESOURCES REPORT Exhibit 2 O Source: USA Topographic Map, Riverside County 0 2,000 4,0001,000 Feet Legend Project Site Project Site CROSSINGS AT PALM DESERT BIOLOGICAL RESOURCES REPORT Exhibit 3 O Source: ESRI Aerial Imagery, Riverside County 012525062.5 Feet Legend Project Site Dick Kelly Drive Cortesia WayGateway Dr MaD Soils CROSSINGS AT PALM DESERT BIOLOGICAL RESOURCES REPORT Exhibit 4 O Source: ESRI Aerial Imagery, Soil Survey Geographic Database, Riverside County 012525062.5 Feet Legend Project Site Myoma fine sand, 5 to 15% slopes (MaD) Dick Kelly Drive Cortesia WayGateway Dr Vegetation CROSSINGS AT PALM DESERT BIOLOGICAL RESOURCES REPORT Exhibit 5 O Source: ESRI Aerial Imagery, Riverside County 012525062.5 Feet Legend Project Site Survey Buffer (200 feet) Creosote Bush Scrub Disturbed Developed Dick Kelly Drive Cortesia WayGateway Dr Critical Habitat CROSSINGS AT PALM DESERT BIOLOGICAL RESOURCES REPORT Exhibit 6 O Source: ESRI Aerial Imagery, USFWS Critical Habitat, Riverside County 0120.5 Miles Legend Project Site Coachella Valley fringe-toed lizard Coachella Valley milk-vetch Peninsular bighorn sheep CVMSHCP Conservation Areas CROSSINGS AT PALM DESERT BIOLOGICAL RESOURCES REPORT Exhibit 7 O Source: ESRI Aerial Imagery, CVMSHCP, Riverside County 0120.5 Miles Legend Project Site Conservation Area Santa Rosa and San Jacinto Mountains Conservation Area Thousand Palms Conservation Area SandCource/Transport Sand Source Sand Transport Attachment B Site Plan Attachment C Site Photographs Attachment C – Site Photographs Crossings at Palm Desert Biological Resources Report Photograph 1: From the northwest corner of the project site looking south along the western boundary. Photograph 2: From the northwest corner of the project site looking east along the northern boundary. Attachment C – Site Photographs Crossings at Palm Desert Biological Resources Report Photograph 3: From the northeast corner of the project site looking west along the northern boundary. Photograph 4: From the northeast corner of the project site looking south along the eastern boundary. Attachment C – Site Photographs Crossings at Palm Desert Biological Resources Report Photograph 5: From the southeast corner of the project site looking north along the eastern boundary. Photograph 6: From the southeast corner of the project site looking west along the southern boundary. Attachment C – Site Photographs Crossings at Palm Desert Biological Resources Report Photograph 7: From the southwest corner of the project site looking east along the southern boundary. Photograph 8: From the southwest corner of the project site looking north along the western boundary. Attachment D Potentially Occurring Special-Status Biological Resources Attachment D – Potentially Occurring Special-S Crossings at Palm Desert Biological Resources Assessment Table D-1: Potentially Occurring Special-Status Biological Resources Scientific Name Common Name Status Habitat Observ On-si SPECIAL-STATUS WILDLIFE SPECIES Athene cunicularia burrowing owl Fed: CA: CVMSHCP: None SSC Covered Primarily a grassland species, but it persists and even thrives in some landscapes highly altered by human activity. Occurs in open, annual or perennial grasslands, deserts, and scrublands characterized by low-growing vegetation. The overriding characteristics of suitable habitat appear to be burrows for roosting and nesting and relatively short vegetation with only sparse shrubs and taller vegetation. No Crotalus ruber red-diamond rattlesnake Fed: CA: CVMSHCP: None SSC Not Covered It can be found from the desert, through dense chaparral in the foothills (it avoids the mountains above around 4,000 feet), to warm inland mesas and valleys, all the way to the cool ocean shore. It is most commonly associated with heavy brush with large rocks or boulders. Dense chaparral in the foothills, cactus or boulder associated coastal sage scrub, oak and pine woodlands, and desert slope scrub associations are known to carry populations of the northern red-diamond rattlesnake; however, chamise and red shank associations may offer better structural habitat for refuges and food resources for this species than other habitats. No Dinacoma caseyi Casey's June beetle Fed: CA: CVMSHCP: END None Not Covered All Dinacoma populations are associated with alluvial sediments occurring in or contiguous with bases of desert alluvial fans, and the broad, gently sloping, depositional surfaces at the base of the Santa Rosa mountain ranges in the dry Coachella valley region. Most commonly associated with the Carsitas series soil. No Falco mexicanus prairie falcon Fed: CA: CVMSHCP: None WL Not Covered Commonly occur in arid and semiarid shrubland and grassland community types. Also occasionally found in open parklands within coniferous forests. During the breeding season, they are found commonly in foothills and mountains which provide cliffs and escarpments suitable for nest sites. No Habropoda pallida white-faced bee Fed: CA: CVMSHCP: None None Not Covered Builds nests in clay-rich sandy slopes along water courses in the Mojave Desert. In California, it occurs from Into County south to Imperial County and east to the Nevada and Arizona borders. Prefers areas with a high density of creosote and dune-restricted endemic plants. No Attachment D – Potentially Occurring Special-S Crossings at Palm Desert Biological Resources Assessment Scientific Name Common Name Status Habitat Observ On-si Lanius ludovicianus loggerhead shrike Fed: CA: CVMSHCP: None SSC Not Covered Often found in broken woodlands, shrublands, and other habitats. Prefers open country with scattered perches for hunting and fairly dense brush for nesting. No Lasiurus xanthinus western yellow bat Fed: CA: CVMSHCP: None SSC Not Covered Roosts in palm trees in foothill riparian, desert wash, and palm oasis habitats with access to water for foraging. No Macrobaenetes valgum Coachella giant sand treader cricket Fed: CA: CVMSHCP: None None Covered Nocturnal and moisture sensitive insects. Emergence occurs with winter rains and appear at maximum densities in January- February. Can be detected via their characteristic delta-shaped burrow excavations. No Ovis canadensis nelsoni pop. 2 Peninsular bighorn sheep DPS Fed: CA: CVMSHCP: END THR; FP Covered Preferred habitat is near mountainous terrain above the desert floor that is visually open, as well as steep and rocky. Most Mojave Desert mountain ranges satisfy these requirements well. Surface water is another element that is considered important to population health. Found mainly in the Peninsular Ranges. No Perognathus longimembris bangsi Palm Springs pocket mouse Fed: CA: CVMSHCP: None SSC Covered Inhabits areas having flat to gently sloping topography, sparse to moderate vegetative cover, and loosely packed or sandy soils on slopes ranging from 0% to approximately 15%. Remaining habitat in the Coachella Valley and environs is about 142,000 acres. No Phrynosoma mcallii flat-tailed horned lizard Fed: CA: CVMSHCP: None SSC Covered Typical habitat is sandy desert hardpan or gravel flats with scattered sparse vegetation of low species diversity. Most common in areas with high density of harvester ants and fine windblown sand, but rarely occurs on dunes. No Polioptila californica californica coastal California gnatcatcher Fed: CA: CVMSHCP: THR SSC Not Covered Obligate resident of sage scrub habitats that are dominated by California sagebrush. This species generally occurs below 750 feet elevation in coastal regions and below 1,500 feet inland. It prefers habitat with more low-growing vegetation. No Stenopelmatus cahuilaensis Coachella Valley Jerusalem cricket Fed: CA: CVMSHCP: None None Covered Restricted to desert dunes. No Toxostoma lecontei Le Conte's thrasher Fed: CA: CVMSHCP: None SSC Covered An uncommon to rare, local resident in southern California deserts from southern Mono Co. south to the Mexican border, and in western and southern San Joaquin Valley. Occurs primarily in open desert wash, desert scrub, alkali desert scrub, and desert succulent shrub habitats; also occurs in Joshua tree habitat with scattered shrubs. No Attachment D – Potentially Occurring Special-S Crossings at Palm Desert Biological Resources Assessment Scientific Name Common Name Status Habitat Observ On-si Uma inornata Coachella Valley fringe-toed lizard Fed: CA: CVMSHCP: THR END Covered Sparsely-vegetated arid areas with fine wind-blown sand, including dunes, washes, and flats with sandy hummocks formed around the bases of vegetation. Needs fine, loose sand for burrowing. No Xerospermophilus tereticaudus chlorus Coachella Valley round-tailed ground squirrel Fed: CA: CVMSHCP: None SSC Covered Inhabits sandy arid regions of Lower Sonoran Life Zone. Its scrub and wash habitats include mesquite and creosote dominated sand dunes, creosote bush scrub, palo verde and saltbush/alkali scrub. No SPECIAL-STATUS PLANT SPECIES Abronia villosa var. aurita chaparral sand-verbena Fed: CA: CNPS: CVMSHCP: None None 1B.1 Not Covered Grows within chaparral, coastal scrub, and desert dunes habitats in areas of full sun and sandy soils. Found at elevations ranging from 245 to 5,249 feet. Blooming period is from January to September. No Astragalus hornii var. hornii Horn's milk-vetch USFWS: CDFW: CNPS: CVMSHCP: None None 1B.1 Not Covered Occurs in lake margins in playas, meadows and seeps. Found at elevations ranging from 197 to 2,789 feet. Blooming period is from May to October. No Astragalus lentiginosus var. borreganus Borrego milk-vetch Fed: CA: CNPS: CVMSHCP: None None 4.3 Not Covered Grows in sandy soils within Mojavean desert scrub and Sonoran desert scrub. Found at elevations ranging from 98 to 1,050 feet in elevation. Blooming period is from February to May. No Astragalus lentiginosus var. coachellae Coachella Valley milk-vetch Fed: CA: CNPS: CVMSHCP: END None 1B.2 Covered Preferred habitat includes desert dunes and sandy Sonoran desert scrub. Found at elevations ranging from 131 to 2,149 feet in elevation. Blooming period is from February to May. No Cuscuta californica var. apiculata pointed dodder Fed: CA: CNPS: CVMSHCP: None None 3 Not Covered Occurs in Mojavean desert scrub and Sonoran desert scrub habitats. Found at elevations ranging from 0 to 1640 feet. Blooming period is from February to August. No Euphorbia arizonica Arizona spurge Fed: CA: CNPS: CVMSHCP: None None 2B.3 Not Covered Preferred habitat includes sandy, Sonoran desert scrub habitat. Found at elevations ranging from 164 to 984 feet. Blooming period is from March to April. No Euphorbia platysperma flat-seeded spurge Fed: CA: CNPS: CVMSHCP: None None 1B.2 Not Covered Occurs within desert scrub and sandy Sonoran desert scrub habitats. Found at elevations ranging from 213 to 328 feet. Blooming period is from February to September. No Attachment D – Potentially Occurring Special-S Crossings at Palm Desert Biological Resources Assessment Scientific Name Common Name Status Habitat Observ On-si Johnstonella costata ribbed cryptantha Fed: CA: CNPS: CVMSHCP: None None 4.3 Not Covered Preferred habitat includes desert dunes, Mojavean desert scrub, and Sonoran desert scrub habitats on sandy soil. Found at elevations ranging from 197 to 1,640 feet. Blooming period is from February to May. No Johnstonella holoptera winged cryptantha Fed: CA: CNPS: CVMSHCP: None None 4.3 Not Covered Found in Mojavean desert scrub and Sonoran desert scrub habitats. Found at elevations ranging from 328 to 5,545 feet. Blooming period is from March to April. No Lycium torreyi Torrey’s box-thron Fed: CA: CNPS: CVMSHCP: None None 4.2 Not Covered Found in sandy, rocky, washes, streambanks and desert valleys in association with Mojavean and Sonoran Desert scrub habitats. Found at elevations ranging from 130 to 3,575 feet. Blooming period is from March to May. No Nemacaulis denudata var. gracilis slender cottonheads Fed: CA: CNPS: CVMSHCP: None None 2B.2 Not Covered Occurs in coastal dunes, desert dunes, and Sonoran desert scrub habitats. Found at elevations ranging from 164 to 1,312 feet. Blooming period is from March to May. No Selaginella eremophila desert spike-moss Fed: CA: CNPS: CVMSHCP: None None 2B.2 Not Covered Found in chaparral and Sonoran desert scrub habitats within gravelly or rocky soil. Found at elevations ranging from 656 to 2,953 feet. Blooming period is from May to July. No Stemodia durantifolia purple stemodia Fed: CA: CNPS: CVMSHCP: None None 2B.1 Not Covered Occurs in Sonoran desert scrub habitats. Found at elevations ranging from 591 to 984 feet. Blooming period is from January to December. No CDFW SENSITIVE HABITATS Desert Fan Palm Oasis Woodland CDFW Sensitive Habitat Rare plant community that is one of the most unusual biological resources located within the Coachella Valley. Found within canyons and along the San Andreas Fault Zone, where water occurs naturally. Generally characterized by open to dense groves of native desert fan palms, which are the most massive native palm in North America, growing more than 66 feet. No U.S. Fish and Wildlife Service (Fed) - Federal California Department of Fish and Wildlife (CA) - California California Native Plant Society (CNPS) California Rare Plant Rank Threat Rank Attachment D – Potentially Occurring Special-S Crossings at Palm Desert Biological Resources Assessment END – Federal Endangered THR – Federal Threatened END – California Endangered THR – California Threatened FP – California Fully Protected SSC – California Species of Special Concern WL – California Watch List 1B Plants Rare, Threatened, or Endangered in California and Elsewhere 2B Plants Rare, Threatened, or Endangered in California, but More Common Elsewhere 3 More Information Needed 4 Plants of Limited Distribution – A Watch List 0.1- Seriousl 0.2- Modera 0.3- Not very Attachment E Regulations Attachmetn E – Regulations Crossings at Palm Desert Biological Resources Assessment Special status species are native species that have been afforded special legal or management protection because of concern for their continued existence. There are several categories of protection at both federal and state levels, depending on the magnitude of threat to continued existence and existing knowledge of population levels. Federal Regulations Endangered Species Act of 1973 Federally listed threatened and endangered species and their habitats are protected under provisions of the Federal Endangered Species Act (ESA). Section 9 of the ESA prohibits “take” of threatened or endangered species. “Take” under the ESA is defined as to “harass, harm, pursue, hunt, shoot, wound, kill, trap, capture, or collect, or to attempt to engage in any of the specifically enumerated conduct.” The presence of any federally threatened or endangered species that are in a project area generally imposes severe constraints on development, particularly if development would result in “take” of the species or its habitat. Under the regulations of the ESA, the United States Fish and Wildlife Service (USFWS) may authorize “take” when it is incidental to, but not the purpose of, an otherwise lawful act. Critical Habitat is designated for the survival and recovery of species listed as threatened or endangered under the ESA. Critical Habitat includes those areas occupied by the species, in which are found physical and biological features that are essential to the conservation of an ESA listed species and which may require special management considerations or protection. Critical Habitat may also include unoccupied habitat if it is determined that the unoccupied habitat is essential for the conservation of the species. Whenever federal agencies authorize, fund, or carry out actions that may adversely modify or destroy Critical Habitat, they must consult with USFWS under Section 7 of the ESA. The designation of Critical Habitat does not affect private landowners, unless a project they are proposing uses federal funds, or requires federal authorization or permits (e.g., funding from the Federal Highway Administration or a permit from the U.S. Army Corps of Engineers (Corps)). If USFWS determines that Critical Habitat will be adversely modified or destroyed from a proposed action, the USFWS will develop reasonable and prudent alternatives in cooperation with the federal institution to ensure the purpose of the proposed action can be achieved without loss of Critical Habitat. If the action is not likely to adversely modify or destroy Critical Habitat, USFWS will include a statement in its biological opinion concerning any incidental take that may be authorized and specify terms and conditions to ensure the agency is in compliance with the opinion. Migratory Bird Treaty Act The Migratory Bird Treaty Act (MBTA) (16 U.S. Government Code [USC] 703) makes it unlawful to pursue, capture, kill, possess, or attempt to do the same to any migratory bird or part, nest, or egg of any such bird listed in wildlife protection treaties between the United States, Great Britain, Mexico, Japan, and the countries of the former Soviet Union, and authorizes the U.S. Secretary of the Interior to protect and regulate the taking of migratory birds. It establishes seasons and bag limits for hunted species and protects migratory birds, their occupied nests, and their eggs (16 USC 703; 50 CFR 10, 21). Attachmetn E – Regulations Crossings at Palm Desert Biological Resources Assessment The MBTA covers the taking of any nests or eggs of migratory birds, except as allowed by permit pursuant to 50 CFR, Part 21. Disturbances causing nest abandonment and/or loss of reproductive effort (i.e., killing or abandonment of eggs or young) may also be considered “take.” This regulation seeks to protect migratory birds and active nests. In 1972, the MBTA was amended to include protection for migratory birds of prey (e.g., raptors). Six families of raptors occurring in North America were included in the amendment: Accipitridae (kites, hawks, and eagles); Cathartidae (New World vultures); Falconidae (falcons and caracaras); Pandionidae (ospreys); Strigidae (typical owls); and Tytonidae (barn owls). The provisions of the 1972 amendment to the MBTA protects all species and subspecies of the families listed above. The MBTA protects over 800 species including geese, ducks, shorebirds, raptors, songbirds and many relatively common species. State Regulations California Environmental Quality Act (CEQA) The California Environmental Quality Act (CEQA) provides for the protection of the environment within the State of California by establishing State policy to prevent significant, avoidable damage to the environment through the use of alternatives or mitigation measures for projects. It applies to actions directly undertaken, financed, or permitted by State lead agencies. If a project is determined to be subject to CEQA, the lead agency will be required to conduct an Initial Study (IS); if the IS determines that the project may have significant impacts on the environment, the lead agency will subsequently be required to write an Environmental Impact Report (EIR). A finding of non-significant effects will require either a Negative Declaration or a Mitigated Negative Declaration instead of an EIR. Section 15380 of the CEQA Guidelines independently defines “endangered” and “rare” species separately from the definitions of the California Endangered Species Act (CESA). Under CEQA, “endangered” species of plants or animals are defined as those whose survival and reproduction in the wild are in immediate jeopardy, while “rare” species are defined as those who are in such low numbers that they could become endangered if their environment worsens. California Endangered Species Act (CESA) In addition to federal laws, the state of California implements the CESA which is enforced by CDFW. The CESA program maintains a separate listing of species beyond the FESA, although the provisions of each act are similar. State-listed threatened and endangered species are protected under provisions of the CESA. Activities that may result in “take” of individuals (defined in CESA as; “hunt, pursue, catch, capture, or kill, or attempt to hunt, pursue, catch, capture, or kill”) are regulated by CDFW. Habitat degradation or modification is not included in the definition of “take” under CESA. Nonetheless, CDFW has interpreted “take” to include the destruction of nesting, denning, or foraging habitat necessary to maintain a viable breeding population of protected species. The State of California considers an endangered species as one whose prospects of survival and reproduction are in immediate jeopardy. A threatened species is considered as one present in such small numbers throughout its range that it is likely to become an endangered species in the near future in the Attachmetn E – Regulations Crossings at Palm Desert Biological Resources Assessment absence of special protection or management. A rare species is one that is considered present in such small numbers throughout its range that it may become endangered if its present environment worsens. State threatened and endangered species are fully protected against take, as defined above. The CDFW has also produced a species of special concern list to serve as a species watch list. Species on this list are either of limited distribution or their habitats have been reduced substantially, such that a threat to their populations may be imminent. Species of special concern may receive special attention during environmental review, but they do not have formal statutory protection. At the federal level, USFWS also uses the label species of concern, as an informal term that refers to species which might be in need of concentrated conservation actions. As the Species of Concern designated by USFWS do not receive formal legal protection, the use of the term does not necessarily ensure that the species will be proposed for listing as a threatened or endangered species. Fish and Game Code Fish and Game Code Sections 3503, 3503.5, 3511, and 3513 are applicable to natural resource management. For example, Section 3503 of the Code makes it unlawful to destroy any birds’ nest or any birds’ eggs that are protected under the MBTA. Further, any birds in the orders Falconiformes or Strigiformes (Birds of Prey, such as hawks, eagles, and owls) are protected under Section 3503.5 of the Fish and Game Code which makes it unlawful to take, possess, or destroy their nest or eggs. A consultation with CDFW may be required prior to the removal of any bird of prey nest that may occur on a project site. Section 3511 of the Fish and Game Code lists fully protected bird species, where the CDFW is unable to authorize the issuance of permits or licenses to take these species. Pertinent species that are State fully protected by the State include golden eagle (Aquila chrysaetos) and white-tailed kite (Elanus leucurus). Section 3513 of the Fish and Game Code makes it unlawful to take or possess any migratory nongame bird as designated in the MBTA or any part of such migratory nongame bird except as provided by rules and regulations adopted by the Secretary of the Interior under provisions of the MBTA. Native Plant Protection Act Sections 1900–1913 of the Fish and Game Code were developed to preserve, protect, and enhance Rare and Endangered plants in the state of California. The act requires all state agencies to use their authority to carry out programs to conserve Endangered and Rare native plants. Provisions of the Native Plant Protection Act prohibit the taking of listed plants from the wild and require notification of the CDFW at least ten days in advance of any change in land use which would adversely impact listed plants. This allows the CDFW to salvage listed plant species that would otherwise be destroyed. California Native Plant Society Rare and Endangered Plant Species Vascular plants listed as rare or endangered by the CNPS, but which have no designated status under FESA or CESA are defined as follows: California Rare Plant Rank 1A- Plants Presumed Extirpated in California and either Rare or Extinct Elsewhere 1B- Plants Rare, Threatened, or Endangered in California and Elsewhere Attachmetn E – Regulations Crossings at Palm Desert Biological Resources Assessment 2A- Plants Presumed Extirpated in California, But More Common Elsewhere 2B- Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere 3- Plants about Which More Information is Needed - A Review List 4- Plants of Limited Distribution - A Watch List Threat Ranks .1- Seriously threatened in California (over 80% of occurrences threatened / high degree and immediacy of threat) .2- Moderately threatened in California (20-80% occurrences threatened / moderate degree and immediacy of threat) .3- Not very threatened in California (<20% of occurrences threatened / low degree and immediacy of threat or no current threats known). Local Policies Coachella Valley MSHCP A Multiple Species Habitat Conservation Plan (Plan) was prepared for the entire Coachella Valley and surrounding mountains to address current and potential future state and federal Endangered Species Act issues in the Plan Area. A Memorandum of Understanding (“Planning Agreement”) was developed to govern the preparation of the Plan. In late 1995 and early 1996, under the auspices of CVAG, the cities of Cathedral City, Coachella, Desert Hot Springs, Indian Wells, Indio, La Quinta, Palm Desert, Palm Springs, and Rancho Mirage; County of Riverside (County); U.S. Fish and Wildlife Service (USFWS); California Department of Fish and Game (CDFG); Bureau of Land Management (BLM); U.S. Forest Service (USFS); and National Park Service (NPS) signed the Planning Agreement to initiate the planning effort. Subsequently, Caltrans, Coachella Valley Water District (CVWD), Imperial Irrigation District (IID), Riverside County Flood Control and Water Conservation District (County Flood Control), Riverside County Regional Park and Open Space District (County Parks), Riverside County Waste Resources Management District (County Waste), California Department of Parks and Recreation (State Parks), and CVMC decided to participate in the Plan. The Plan balances environmental protection and economic development objectives in the Plan Area and simplifies compliance with endangered species related laws. The Plan is intended to satisfy the legal requirements for the issuance of Permits that will allow the Take of species covered by the Plan in the course of otherwise lawful activities. The Plan will, to the maximum extent practicable, minimize and mitigate the impacts of the Taking and provide for Conservation of the Covered Species. The Conservation Plan includes the establishment of an MSHCP Reserve System, setting Conservation Objectives to ensure the Conservation of the Covered Species and conserved natural communities in the MSHCP Reserve System, provisions for management of the MSHCP Reserve System, and a Monitoring Program, and Adaptive Management. The MSHCP Reserve System will be established from lands within Attachmetn E – Regulations Crossings at Palm Desert Biological Resources Assessment 21 Conservation Areas. Because some Take Authorization is provided under the Plan for Development in Conservation Areas, the actual MSHCP Reserve System will be somewhat smaller than the total acres in the Conservation Areas. When assembled, the Reserve System will provide for the Conservation of the Covered Species in the Plan Area. Attachmetn E – Regulations Crossings at Palm Desert Biological Resources Assessment There are three key agencies that regulate activities within inland streams, wetlands, and riparian areas in California. The Corps Regulatory Branch regulates activities pursuant to Section 404 of the Federal Clean Water Act (CWA) and Section 10 of the Rivers and Harbors Act. Of the State agencies, the CDFG regulates activities under the Fish and Game Code Section 1600-1616, and the Regional Board regulates activities pursuant to Section 401 of the CWA and the California Porter-Cologne Water Quality Control Act. Federal Regulations Section 404 of the Clean Water Act Since 1972, the Corps and U.S. Environmental Protection Agency (EPA) have jointly regulated the filling of “waters of the U.S.,” including wetlands, pursuant to Section 404 of the Clean Water Act (CWA). The Corps has regulatory authority over the discharge of dredged or fill material into the waters of the United States under Section 404 of the CWA. The Corps and EPA define “fill material” to include any “material placed in waters of the United States where the material has the effect of: (i) replacing any portion of a water of the United States with dry land; or (ii) changing the bottom elevation of any portion of the waters of the United States.” Examples include, but are not limited to, sand, rock, clay, construction debris, wood chips, and “materials used to create any structure or infrastructure in the waters of the United States.” In order to further define the scope of waters protected under the CWA, the Corps and EPA published the Clean Water Rule on June 29, 2015. Pursuant to the Clean Water Rule, the term “waters of the United States” is defined as follows: (i) All waters which are currently used, or were used in the past, or may be susceptible to use in interstate or foreign commerce, including all waters which are subject to the ebb and flow of the tide. (ii) All interstate waters, including interstate wetlands1. (iii) The territorial seas. (iv) All impoundments of waters otherwise defined as waters of the United States under the definition. (v) All tributaries 2 of waters identified in paragraphs (i) through (iii) mentioned above. (vi) All waters adjacent 3 to a water identified in paragraphs (i) through (v) mentioned above, including wetlands, ponds, lakes, oxbows, impoundments, and similar waters. 1 The term wetlands means those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. 2 The terms tributary and tributaries each mean a water that contributes flow, either directly or through another water (including an impoundment identified in paragraph (iv) mentioned above), to a water identified in paragraphs (i) through (iii) mentioned above, that is characterized by the presence of the physical indicators of a bed and banks and an ordinary high water mark. 3 The term adjacent means bordering, contiguous, or neighboring a water identified in paragraphs (i) through (v) mentioned above, including waters separated by constructed dikes or barriers, natural river berms, beach dunes, and the like. Attachmetn E – Regulations Crossings at Palm Desert Biological Resources Assessment (vii) All prairie potholes, Carolina bays and Delmarva bays, Pocosins, western vernals pools, Texas coastal prairie wetlands, where they are determined, on a case-specific basis, to have a significant nexus to a water identified in paragraphs (i) through (iii) meantioned above. (viii) All waters located within the 100-year floodplain of a water identified in paragraphs (i) through (iii) mentioned above and all waters located within 4,000 feet of the high tide line or ordinary high water mark of a water identified in paragraphs (i) through (v) mentioned above, where they are determined on a case-specific basis to have a significant nexus to a waters identified in paragraphs (i) through (iii) mentioned above. The following features are not defined as “waters of the United States” even when they meet the terms of paragraphs (iv) through (viii) mentioned above: (i) Waste treatment systems, including treatment ponds or lagoons designed to meet the requirements of the Clean Water Act. (ii) Prior converted cropland. (iii) The following ditches: (A) Ditches with ephemeral flow that are not a relocated tributary or excavated in a tributary. (B) Ditches with intermittent flow that are not a relocated tributary, excavated in a tributary, or drain wetlands. (C) Ditches that do not flow, either directly or through another water, into a water of the United States as identified in paragraphs (i) through (iii) of the previous section. (iv) The following features: (A) Artificially irrigated areas that would revert to dry land should application of water to that area cease; (B) Artificial, constructed lakes and ponds created in dry land such as farm and stock watering ponds, irrigation ponds, settling basins, fields flooded for rice growing, log cleaning ponds, or cooling ponds; (C) Artificial reflecting pools or swimming pools created in dry land; (D) Small ornamental waters created in dry land; (E) Water-filled depressions created in dry land incidental to mining or construction activity, including pits excavated for obtaining fill, sand, or gravel that fill with water; (F) Erosional features, including gullies, rills, and other ephemeral features that do not meet the definition of a tributary, non-wetland swales, and lawfully constructed grassed waterways; and (G) Puddles. (v) Groundwater, including groundwater drained through subsurface drainage systems. (vi) Stormwater control features constructed to convey, treat, or store stormwater that are created in dry land. Attachmetn E – Regulations Crossings at Palm Desert Biological Resources Assessment (vii) Wastewater recycling structures constructed in dry land; detention and retention basins built for wastewater recycling; groundwater recharge basins; percolation ponds built for wastewater recycling; and water distributary structures built for wastewater recycling. Section 401 of the Clean Water Act Pursuant to Section 401 of the CWA, any applicant for a federal license or permit to conduct any activity which may result in any discharge to waters of the United States must provide certification from the State or Indian tribe in which the discharge originates. This certification provides for the protection of the physical, chemical, and biological integrity of waters, addresses impacts to water quality that may result from issuance of federal permits, and helps insure that federal actions will not violate water quality standards of the State or Indian tribe. In California, there are nine Regional Water Quality Control Boards (Regional Board) that issue or deny certification for discharges to waters of the United States and waters of the State, including wetlands, within their geographical jurisdiction. The State Water Resources Control Board assumed this responsibility when a project has the potential to result in the discharge to waters within multiple Regional Boards. State Regulations Fish and Game Code Fish and Game Code Sections 1600 et. seq. establishes a fee-based process to ensure that projects conducted in and around lakes, rivers, or streams do not adversely impact fish and wildlife resources, or, when adverse impacts cannot be avoided, ensures that adequate mitigation and/or compensation is provided. Fish and Game Code Section 1602 requires any person, state, or local governmental agency or public utility to notify the CDFW before beginning any activity that will do one or more of the following: (1) substantially obstruct or divert the natural flow of a river, stream, or lake; (2) substantially change or use any material from the bed, channel, or bank of a river, stream, or lake; or (3) deposit or dispose of debris, waste, or other material containing crumbled, flaked, or ground pavement where it can pass into a river, stream, or lake. Fish and Game Code Section 1602 applies to all perennial, intermittent, and ephemeral rivers, streams, and lakes in the State. CDFW’s regulatory authority extends to include riparian habitat (including wetlands) supported by a river, stream, or lake regardless of the presence or absence of hydric soils and saturated soil conditions. Generally, the CDFW takes jurisdiction to the top of bank of the stream or to the outer limit of the adjacent riparian vegetation (outer drip line), whichever is greater. Notification is generally required for any project that will take place in or in the vicinity of a river, stream, lake, or their tributaries. This includes rivers or streams that flow at least periodically or permanently through a bed or channel with banks that support fish or other aquatic life and watercourses having a surface or subsurface flow that support or have supported riparian vegetation. A Section 1602 Streambed Alteration Agreement would be required if impacts to identified CDFW jurisdictional areas occur. Porter Cologne Act Attachmetn E – Regulations Crossings at Palm Desert Biological Resources Assessment The California Porter-Cologne Water Quality Control Act gives the State very broad authority to regulate waters of the State, which are defined as any surface water or groundwater, including saline waters. The Porter-Cologne Act has become an important tool in the post SWANCC and Rapanos regulatory environment, with respect to the state’s authority over isolated and insignificant waters. Generally, any person proposing to discharge waste into a water body that could affect its water quality must file a Report of Waste Discharge in the event that there is no Section 404/401 nexus. Although “waste” is partially defined as any waste substance associated with human habitation, the Regional Board also interprets this to include fill discharged into water bodies. 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HIIHFWVDQGVKDOOEHLPSOHPHQWHGZKHUHDSSOLFDEOH 3URSRVHG 'HYHORSPHQW DGMDFHQW WR RU ZLWKLQ D &RQVHUYDWLRQ $UHDVKDOO LQFRUSRUDWH SODQV WR HQVXUH WKDW WKH TXDQWLW\ DQG TXDOLW\ RI UXQRII GLVFKDUJHG WR WKH DGMDFHQW &RQVHUYDWLRQ $UHD LV QRW DOWHUHG LQ DQ DGYHUVH ZD\ ZKHQ FRPSDUHG ZLWK H[LVWLQJ FRQGLWLRQV 6WRUPZDWHU V\VWHPV VKDOO EH GHVLJQHG WR SU HYHQW WKH UHOHDVH RI 1 PHASE I HISTORICAL/ARCHAEOLOGICAL RESOURCES SURVEY THE CROSSINGS AT PALM DESERT PROJECT City of Palm Desert Riverside County, California For Submittal to: City of Palm Desert Planning/Land Development Division 73-510 Fred Waring Drive Palm Desert, CA 92260 Prepared for: The Altum Group 73-710 Fred Waring Drive, Suite 219 Palm Desert, CA 92260 Prepared by: CRM TECH 1016 East Cooley Drive, Suite A/B Colton, CA 92324 Bai “Tom” Tang, Principal Investigator Michael Hogan, Principal Investigator December 3, 2021 CRM TECH Contract No. 3794 Title: Phase I Historical/Archaeological Resources Survey: The Crossings at Palm Desert Project, City of Palm Desert, Riverside County, California Author(s): Daniel Ballester, Archaeologist/Field Director Nina Gallardo, Archaeologist/Native American Liaison Consulting Firm: CRM TECH 1016 East Cooley Drive, Suite A/B Colton, CA 92324 (909) 824-6400 Date: December 3, 2021 For Submittal to: City of Palm Desert Planning/Land Development Division 73-510 Fred Waring Drive Palm Desert, CA 92260 (760) 346-0611 Prepared for: Lauren Reese The Altum Group 73-710 Fred Waring Drive, Suite 219 Palm Desert, CA 92260 (760) 346-4750 Project Size: Approximately 10 acres USGS Quadrangle: Cathedral City, Calif., 7.5’ quadrangle (Section 29, T4S R6E, San Bernardino Baseline and Meridian) Keywords: Coachella Valley, western Colorado Desert; Assessor’s Parcel Numbers 694-130-017 and -018; no “historical resources” under CEQA i EXECUTIVE SUMMARY In October and November 2021, at the request of the Altum Group, CRM TECH performed a Phase I cultural resources survey on approximately 10 acres of undeveloped land in the northwestern portion of the City of Palm Desert, Riverside County, California. The subject property of the study consists of Assessor’s Parcel Numbers 694-130-017 and -018, located on the south side of Dick Kelly Drive between Gateway Drive and Cortesia Way, in the southwest quarter of Section 29, T4S R6E, San Bernardino Baseline and Meridian. The study is part of the environmental review process for the proposed development of a multi-family residential complex known as the Crossing at Palm Desert. The City of Palm Desert, as the lead agency for the project, required the study in compliance with the California Environmental Quality Act (CEQA). The purpose of the study is to provide the City with the necessary information and analysis to determine whether the proposed project would cause substantial adverse changes to any “historical resources,” as defined by CEQA, that may exist in or around the project area. In order to identify and evaluate such resources, CRM TECH reviewed the results of recent historical/archaeological resources records searches on nearby properties, initiate a Native American Sacred Lands File search, pursued historical background research, and carried out an intensive-level field survey of the entire project area. Throughout the course of these research procedures, no “historical resources” were encountered within or adjacent to the project area. Based on these findings, CRM TECH recommends to the City of Palm Desert a determination of No Impact regarding “historical resources.” No further cultural resources investigation is recommended for the project unless development plans undergo such changes as to include areas not covered by this study. However, if buried cultural materials are discovered during any earth-moving operations associated with the project, all work in that area should be halted or diverted until a qualified archaeologist can evaluate the nature and significance of the finds. ii TABLE OF CONTENTS EXECUTIVE SUMMARY ................................................................................................................... i INTRODUCTION ................................................................................................................................ 1 SETTING .............................................................................................................................................. 4 Current Natural Setting ..................................................................................................................... 4 Cultural Setting ................................................................................................................................. 5 Prehistoric Context........................................................................................................................ 5 Ethnohistoric Context ................................................................................................................... 5 Historic Context ............................................................................................................................ 6 RESEARCH METHODS ..................................................................................................................... 7 Records Search.................................................................................................................................. 7 Sacred Lands File Search .................................................................................................................. 7 Historical Background Research....................................................................................................... 8 Field Survey ...................................................................................................................................... 8 RESULTS AND FINDINGS ................................................................................................................ 8 Records Search.................................................................................................................................. 8 Sacred Lands File Search .................................................................................................................. 9 Historical Background Research....................................................................................................... 9 Field Survey ...................................................................................................................................... 9 DISCUSSION ..................................................................................................................................... 11 CONCLUSIONS AND RECOMMENDATIONS ............................................................................. 11 REFERENCES ................................................................................................................................... 12 APPENDIX 1: Personnel Qualifications ............................................................................................ 14 APPENDIX 2: Sacred Lands File Search Results .............................................................................. 17 LIST OF FIGURES Figure 1. Project vicinity...................................................................................................................... 1 Figure 2. Project area ........................................................................................................................... 2 Figure 3. Aerial view of the project area ............................................................................................. 3 Figure 4. Overview of the current natural setting of the project area .................................................. 4 Figure 5. The project area and vicinity in 1855-1856 ........................................................................ 10 Figure 6. The project area and vicinity in 1901 ................................................................................. 10 Figure 7. The project area and vicinity in 1941 ................................................................................. 10 Figure 8. The project area and vicinity in 1956-1958 ........................................................................ 10 1 INTRODUCTION In October and November 2021, at the request of the Altum Group, CRM TECH performed a Phase I cultural resources survey on approximately 10 acres of undeveloped land in the northwestern portion of the City of Palm Desert, Riverside County, California (Figure 1). The subject property of the study consists of Assessor’s Parcel Numbers 694-130-017 and -018, located on the south side of Dick Kelly Drive between Gateway Drive and Cortesia Way, in the southwest quarter of Section 29, T4S R6E, San Bernardino Baseline and Meridian (Figures 2, 3). The study is part of the environmental review process for the proposed development of a multi- family residential complex known as the Crossing at Palm Desert. The City of Palm Desert, as the lead agency for the project, required the study in compliance with the California Environmental Quality Act (CEQA; PRC §21000, et seq.). The purpose of the study is to provide the City with the necessary information and analysis to determine whether the proposed project would cause substantial adverse changes to any “historical resources,” as defined by CEQA, that may exist in or around the project area. In order to identify and evaluate such resources, CRM TECH reviewed the results of recent historical/archaeological resources records searches on nearby properties, initiate a Native American Sacred Lands File search, pursued historical background research, and carried out an intensive-level field survey of the entire project area. The following report is a complete account of the methods, results, and final conclusion of the study. Personnel who participated in the study are named in the appropriate sections below, and their qualifications are provided in Appendix 1. Figure 1. Project vicinity. (Based on USGS Santa Ana, Calif., 120’x60’ quadrangle [USGS 1979]) 2 Figure 2. Project area. (Based on USGS Cathedral City and Myoma, Calif., 7.5’ quadrangles [USGS 1978; 1981]) 3 Figure 3. Aerial view of the project area. 4 SETTING CURRENT NATURAL SETTING The City of Palm Desert lies in the heart of the Coachella Valley, a northwest-southeast trending desert valley that constitutes the western end of the Colorado Desert. Dictated by this geographic setting, the climate and environment of the region are typical of the southern California desert country, marked by extremes in temperature and aridity. Temperatures in the region reach over 120 degrees Fahrenheit in summer, and dip to near freezing in winter. Average annual precipitation is less than five inches, and the average annual evaporation rate exceeds three feet. The subject property is part of an area of rapid suburban growth in recent years on the northern edge of the city, along the Interstate Highway 10 corridor. It is bounded by Gateway Drive on the west, Dick Kelly Drive on the north, Cortesia Way on the east, and open desert land on the south. A condominium complex is located on the opposite side of Dick Kelly Drive while commercial development dominates the land use further to the north (Figure 3). To the south of the project location, the existing development is mostly residential, including condominiums as well as single- family homes (Figure 3). The terrain in the project area is uneven, with a gentle decline towards the northeast and elevations ranging approximately from 260 feet to 310 feet above mean sea level. The property is currently open desert land with small dune-like features made up of fine- to medium-grained sands. Some modern refuse is scattered along the property boundaries, along with fragments of asphalt and concrete. The sparse vegetation growth consists of creosote bushes, brittlebush, wild mustard, and other small shrubs and grasses (Figure 4). Figure 4. Overview of the current natural setting of the project area. (Photograph taken on October 22, 2021; view to the south) 5 CULTURAL SETTING Prehistoric Context Numerous investigations on the history of cultural development in southern California have led researchers to propose a number of cultural chronologies for the desert regions. A specific cultural sequence for the Colorado Desert was offered by Schaefer (1994) on the basis of the many archaeological studies conducted in the area. The earliest time period identified is the Paleoindian (ca. 8,000 to 10,000-12,000 years ago), when “small, mobile bands” of hunters and gatherers, who relied on a variety of small and large game animals as well as wild plants for subsistence, roamed the region (ibid.:63). These small groups settled “on mesas and terraces overlooking larger washes” (ibid.:64). The artifact assemblage of that period typically consists of very simple stone tools, “cleared circles, rock rings, [and] some geoglyph types” (ibid.). The Early Archaic Period follows and dates to ca. 8,000 to 4,000 years ago. It appears that a decrease in population density occurred at this time and that the indigenous groups of the area relied more on foraging than hunting. Very few archaeological remains have been identified to this time period. The ensuing Late Archaic Period (ca. 4,000 to 1,500 years ago) is characterized by continued low population densities and groups of “flexible” sizes that settled near available seasonal food resources and relied on “opportunistic” hunting of game animals. Groundstone artifacts for food processing were prominent during this time period. The most recent period in Schaefer’s scheme, the Late Prehistoric, dates from ca. 1,500 years ago to the time of the Spanish missions, and saw the continuation of the seasonal settlement pattern. Peoples of the Late Prehistoric Period were associated with the Patayan cultural pattern and relied more heavily on the availability of seasonal “wild plants and animal resources” (Schaefer 1994:66). It was during this period that brown and buff ware ceramics were introduced into the region. The shores of Holocene Lake Cahuilla, during times of its presence, attracted much settlement and resource procurement; but in times of the lake’s desiccation around 1700, according to Schaefer (1994:66), the Native people moved away from its receding shores towards rivers, streams, and mountains. Numerous archaeological sites dating to this time period have been identified along the shoreline of Holocene Lake Cahuilla. Testing and mitigative excavations at these sites have recovered brown and buff ware ceramics, a variety of groundstone and projectile point types, ornaments, and cremations. Ethnohistoric Context The Coachella Valley is a historical center of Native American settlement, where U.S. surveyors noted large numbers of Indian villages and rancherías, occupied by the Cahuilla people, in the mid- 19th century. The Takic-speaking Cahuilla are generally divided by anthropologists into three groups, according to their geographic setting: the Pass Cahuilla of the San Gorgonio Pass-Palm Springs area, the Mountain Cahuilla of the San Jacinto and Santa Rosa Mountains and the Cahuilla Valley, and the Desert Cahuilla of the eastern Coachella Valley. The basic written sources on Cahuilla culture and history include Kroeber (1925), Strong (1929), and Bean (1978). The following ethnohistoric discussion is based primarily on these sources. 6 The Cahuilla did not have a single name that referred to an all-inclusive tribal affiliation. Instead, membership was in terms of lineages or clans. Each lineage or clan belonged to one of two main divisions of the people, known as moieties. Members of clans in one moiety had to marry into clans from the other moiety. Individual clans had villages, or central places, and territories they called their own, for purposes of hunting game, gathering food, or utilizing other necessary resources. They interacted with other clans through trade, intermarriage, and ceremonies. The Cahuilla people were primarily hunters and gatherers who exploited nearly all of the resources available in a highly developed seasonal mobility system. They were adapted to the arid conditions of the desert floor, the lacustral cycles of Holocene Lake Cahuilla, and the environments of the nearby mountains. When the lake was full, or nearly full, the Cahuilla would take advantage of the resources presented by the body of fresh water. Once the lake had desiccated, they utilized the available terrestrial resources. They also migrated to the higher elevations of the nearby mountains to take advantage of the resources and cooler temperatures available in that environment. The Cahuilla collected seeds, roots, wild fruits and berries, acorns, wild onions, piñon nuts, and mesquite and screw beans. Common game animals included deer, antelope, big horn sheep, rabbits, wood rats and, when Holocene Lake Cahuilla was present, fish and waterfowls. The Cahuilla hunted with throwing sticks, clubs, nets, traps, snares, as well as bows and arrow (Bean 1978; CSRI 2002). Common tools and utensils included manos and metates, mortars and pestles, hammerstones, fire drills, awls, arrow-straighteners, and stone knives and scrapers. These lithic tools were made from locally available material as well as exotic material procured through trade or travel. They also used wood, horn, and bone spoons and stirrers; baskets for winnowing, leaching, grinding, transporting, parching, storing, and cooking; and pottery vessels for carrying water, storage, cooking, and serving food and drink (ibid.). Population data prior to European contact are almost impossible to obtain, but estimates range from 3,600 to as high as 10,000 persons. During the 19th century, however, the Cahuilla population was decimated as a result of European diseases, most notably smallpox, for which the Native peoples had no immunity. Today, Native Americans of Pass or Desert Cahuilla heritage are mostly affiliated with one or more of the Indian reservations in and near the Coachella Valley, including Agua Caliente, Morongo, Cabazon, Torres Martinez, and Augustine. Historic Context In 1823-1825, José Romero, José Maria Estudillo, and Romualdo Pacheco became the first noted European explorers to travel through the Coachella Valley when they led a series of expeditions in search of a route to Yuma (Johnston 1987:92-95). Due to its harsh environment, few non-Indians ventured into the desert valley during the Mexican and early American periods, except those who traveled along the established trails. The most important of these trails was the Cocomaricopa Trail, an ancient Indian trading route that was “discovered” in 1862 by William David Bradshaw and known after that as the Bradshaw Trail (Gunther 1984:71; Ross 1992:25). In much of the Coachella Valley, this historic wagon road traversed a similar course to that of present-day State Route 111. During the 1860s-1870s, the Bradshaw Trail served as the main thoroughfare between coastal southern California and the Colorado River, until the completion of the Southern Pacific Railroad in 1876-1877 brought an end to its heyday (Johnston 1987:185). 7 Non-Indian settlement in the Coachella Valley began in the 1870s with the establishment of railroad stations along the Southern Pacific Railroad, and spread further in the 1880s after public land was opened for claims under the Homestead Act, the Desert Land Act, and other federal land laws (Laflin 1998:35-36; Robinson 1948:169-171). Farming became the dominant economic activity in the valley thanks to the development of underground water sources, often in the form of artesian wells. Around the turn of the century, the date palm was introduced into the Coachella Valley, and by the late 1910s dates were the main agricultural crop and the tree an iconic image celebrating the region as the “Arabia of America” (Shields Date Gardens 1957). Then, starting in the 1920s, a new industry featuring equestrian camps, resorts, hotels, and eventually country clubs began to spread throughout the Coachella Valley, transforming it into southern California’s premier winter retreat. The modern community of Palm Desert is located in the general vicinity of Sand Hole, an unreliable water hole on the Cocomaricopa-Bradshaw Trail that has since vanished into obscurity (Johnston 1987:120). The community was founded in 1945-1946 by three brothers, Randall, Clifford, and Phil Henderson, who organized the Palm Desert Corporation to promote their new desert town (Gunther 1984:373-374). Following the footsteps of Palm Springs and other “cove communities” along Highway 111, such as Rancho Mirage and La Quinta, Palm Desert soon became another winter resort town for the rich and famous of the time, characterized by country clubs and golf courses. The Palm Desert post office was established in 1947, and in 1973, after four unsuccessful attempts, the community was officially incorporated as the 16th city in Riverside County (ibid.:374). More recently, growth has been focused on new residential and commercial development, the latter concentrated mostly along the two transportation arteries across the Coachella Valley, Interstate Highway 10 and State Route 111. RESEARCH METHODS RECORDS SEARCH Due to delays caused by facility closure during the COVID-19 pandemic, a historical/archaeological resources records search could not be obtained in time for this project from the Eastern Information Center (EIC) of the California Historical Resources Information System. In lieu of a new records search, project archaeologist Daniel Ballester reviewed CRM TECH’s archives for studies carried out between 2016 and 2021 near the project location and the records search results for those studies. From these data, Ballester was able to construct a coverage of existing records pertaining to an approximate half-mile radius of the current project location. As the EIC has not updated its data collection since the beginning of the pandemic, the coverage was considered adequate for this study. SACRED LANDS FILE SEARCH On October 14, 2021, CRM TECH submitted a written request to the State of California Native American Heritage Commission (NAHC) for a records search in the commission’s Sacred Lands File. The NAHC is the State of California’s trustee agency for the protection of “tribal cultural resources,” as defined by California Public Resources Code §21074, and is tasked with identifying and cataloging properties of Native American cultural value throughout the state, including places of 8 special religious, spiritual, or social significance and known graves and cemeteries. The NAHC’s reply is summarized below and attached to this report in Appendix 2. HISTORICAL BACKGROUND RESEARCH Historical background research for this study was conducted by CRM TECH principal investigator/ historian Bai “Tom” Tang. Sources consulted during the research included published literature in local and regional history, historical maps of the Palm Desert area, and aerial photographs of the project vicinity. Among the maps consulted were U.S. General Land Office (GLO) land survey plat maps dated 1856 and U.S. Geological Survey (USGS) topographic maps dated 1904-1981, which are accessible at the websites of the U.S. Bureau of Land Management and the USGS. The aerial photographs, taken in 1972-2021, are available at the Nationwide Environmental Title Research (NETR) Online website and through the Google Earth software. FIELD SURVEY On October 22, 2021, Daniel Ballester carried out the intensive-level field survey of the project area. Prior to that, CRM TECH notified the Tribal Historic Preservation Office of the nearby Agua Caliente Band of Cahuilla Indians of the upcoming archaeological field survey on October 19 and invited tribal participation, but the tribe was unable to arrange for the proper personnel to be present. The survey was completed on foot by walking a series of parallel north-south transects spaced 15 meters (approximately 50 feet) apart. In this way, the ground surface in the entire project area was systematically and carefully examined for any evidence of human activities dating to the prehistoric or historic period (i.e., 50 years or older). Ground visibility was excellent (90 to 100 percent) due to the sparse vegetation growth throughout the project area. RESULTS AND FINDINGS RECORDS SEARCH Based on information from recent records searches on nearby properties, the current project area had not been surveyed for cultural resources prior to this study, and no cultural resources had been recorded on or adjacent to the property. Within the half-mile scope of the records search, EIC records identify at least nine previous studies on various tracts of land and linear features, including the adjacent property to the north. In addition, CRM TECH has recently completed a survey near this location that has yet to be submitted to the EIC once the California Historical Resources Information System resumes normal operations. As a result of these past survey efforts, three historical/archaeological sites and five isolates—i.e., localities with fewer than three artifacts were previously recorded within the half-mile radius, as listed in Table 1. As Table 1 shows, all of the known sites and isolates in the project vicinity dated to the historic period, and no cultural resources of prehistoric—i.e., Native American—origin have been recorded within the records search scope. The sites and isolates listed in Table 1 were found approximately 0.3 mile to 0.5 mile from the project location, mostly to the west and the northeast. Since none of them were located in the immediate vicinity of the project area, none of them require further consideration during this study. 9 Table 1. Previously Recorded Cultural Resources within the Scope of the Records Search Resource No. Recorded by/Date Description 33-009498 Various 1999-2005 Southern Pacific (now Union Pacific) Railroad 3760-2H* Ballester and O’Donnell 2021 Remains of a late-1950s “jackrabbit homestead” 3760-3H* Ballester and O’Donnell 2021 Remains of a late-1950s “jackrabbit homestead” 3760-4H* Ballester and O’Donnell 2021 Isolate: Hamm’s 12-ounce aluminum can 3760-5H* Ballester and O’Donnell 2021 Isolate: metal sanitary can 3760-6H* Ballester and O’Donnell 2021 Isolate: flat-top beverage can 3760-7H* Ballester and O’Donnell 2021 Isolate: five-gallon round fuel can 3760-8H* Ballester and O’Donnell 2021 Isolate: brown glass bottle base * Temporary designation, pending assignment of official identification numbers in the California Historical Resources Inventory SACRED LANDS FILE SEARCH In response to CRM TECH’s inquiry, the NAHC states in a letter dated November 19, 2021, that the Sacred Lands File identified no Native American cultural resources in the project vicinity (see App. 2). Noting that the absence of specific information would not necessarily indicate the absence of cultural resources, however, the NAHC recommended that local Native American groups be consulted for further information and provided a referral list of 16 individuals associated with 11 local Native American groups who may have knowledge of such resources. The NAHC’s reply is attached in Appendix 2 for reference by the City of Palm Desert in future government-to- government consultations with the pertinent tribal groups, if necessary. HISTORICAL BACKGROUND RESEARCH Historical sources consulted for this study suggest that the project area is low in sensitivity for cultural resources from the historic period. Throughout the 1850s-1970s era, no evidence of any settlement or development activities were observed in or near the project area (Figures 5-8; NETR Online 1972). As late as the mid-1990s, the project area and the surrounding land retained much of their undisturbed native landscape, and the nearest notable human-made feature was Monterey Avenue a quarter-mile to the west, which was extended through the vicinity sometime between 1972 and 1996 (NETR Online 1972; 1996; Google Earth 1996). The existing development nearby, including the shopping centers and office parks to the north and the residential neighborhoods to the south, began in the 2004-2006 era, and the condominiums across Dick Kelly Drive were built between 2006 and 2009 (NETR Online 2002-2009; Google Earth 2002-2009). By 2009, all three streets surrounding the project area today were in place (ibid.). While the commercial and residential development gradually expanded on the surrounding properties, the project area has remained undeveloped to the present time (NETR Online 2009-2018; Google Earth 2009-2021). FIELD SURVEY The field survey yielded completely negative results for potential “historical resources.” No buildings, structures, or objects more than 50 years of age were encountered in the project area, nor were any archaeological features or artifacts of prehistoric or historic origin. The ground surface in project area has been slightly disturbed along the perimeters by past construction activities associated with the adjacent streets and underground utilities. A small amount of modern refuse was 10 Figure 5. The project area and vicinity in 1855-1856. (Source: GLO 1856) Figure 6. The project area and vicinity in 1901. (Source: USGS 1904) Figure 7. The project area and vicinity in 1941. (Source: USGS 1941) Figure 8. The project area and vicinity in 1956-1958. (Source: USGS 1958a; 1958b) 11 also observed along the project boundaries, consisting mainly of building debris and household discards, as mentioned above, but none of the items is of any historical/archaeological interest. DISCUSSION The purpose of this study is to identify any cultural resources within or adjacent to the project area, and to assist the City of Palm Desert in determining whether such resources meet the official definition of “historical resources,” as provided in the California Public Resources Code, in particular CEQA. According to PRC §5020.1(j), “‘historical resource’ includes, but is not limited to, any object, building, site, area, place, record, or manuscript which is historically or archaeologically significant, or is significant in the architectural, engineering, scientific, economic, agricultural, educational, social, political, military, or cultural annals of California.” More specifically, CEQA guidelines state that the term “historical resources” applies to any such resources listed in or determined to be eligible for listing in the California Register of Historical Resources, included in a local register of historical resources, or determined to be historically significant by the lead agency (Title 14 CCR §15064.5(a)(1)-(3)). Regarding the proper criteria for the evaluation of historical significance, CEQA guidelines mandate that “generally a resource shall be considered by the lead agency to be ‘historically significant’ if the resource meets the criteria for listing on the California Register of Historical Resources” (Title 14 CCR §15064.5(a)(3)). A resource may be listed in the California Register if it meets any of the following criteria: (1) Is associated with events that have made a significant contribution to the broad patterns of California’s history and cultural heritage. (2) Is associated with the lives of persons important in our past. (3) Embodies the distinctive characteristics of a type, period, region, or method of construction, or represents the work of an important creative individual, or possesses high artistic values. (4) Has yielded, or may be likely to yield, information important in prehistory or history. (PRC §5024.1(c)) In summary of the research results presented above, no potential “historical resources” were previously recorded within or adjacent to the project area, and none were found during the present survey. In addition, the Native American Sacred Lands File does not identify any sites of traditional cultural value in the project vicinity, and no notable cultural features were known to be present in the project area throughout the historic period. Based on these findings, and in light of the criteria listed above, the present report concludes that no historical resources exist within or adjacent to the project area. CONCLUSIONS AND RECOMMENDATIONS CEQA establishes that “a project that may cause a substantial adverse change in the significance of a historical resource is a project that may have a significant effect on the environment” (PRC §21084.1). “Substantial adverse change,” according to PRC §5020.1(q), “means demolition, destruction, relocation, or alteration such that the significance of a historical resource would be 12 impaired.” As stated above, the results of the present study indicate that no “historical resources,” as defined by CEQA, are present within or adjacent to the project area. Therefore, CRM TECH presents the following recommendations to the City of Palm Desert: x The project as currently proposed will not cause a substantial adverse change to any known “historical resources.” x No further cultural resources investigation is necessary for the proposed project unless development plans undergo such changes as to include areas not covered by this study. x If buried cultural materials are discovered during any earth-moving operations associated with the project, all work in that area should be halted or diverted until a qualified archaeologist can evaluate the nature and significance of the finds. REFERENCES Bean, Lowell John 1978 Cahuilla. In Robert F. Heizer (ed.): Handbook of North American Indians, Vol. 8: California; pp. 575-587. Smithsonian Institution, Washington, D.C. CSRI (Cultural Systems Research, Inc.) 2002 The Native Americans of Joshua Tree National Park: An Ethnographic Overview and Assessment Study. http://www.cr.nps.gov/history/online_books/jotr/history6.htm. GLO (General Land Office, U.S. Department of the Interior) 1856 Plat map: Township No. 4 South Range No. 6 East, San Bernardino Baseline and Meridian; surveyed in 1855-1856. Google Earth 1996-2021 Aerial photographs of the project vicinity; taken in 1996, 2002, 2005, 2006, 2009, 2011-2013, 2015-2019, and 2021. Available through the Google Earth software. Gunther, Jane Davies 1984 Riverside County, California, Place Names: Their Origins and Their Stories. J.D. Gunther, Riverside. Johnston, Francis J. 1987 The Bradshaw Trail; revised edition. Historical Commission Press, Riverside. Kroeber, Alfred L. 1925 Handbook of the Indians of California. Bureau of American Ethnology Bulletin 78. Government Printing Office, Washington, D.C. Laflin, Patricia 1998 Coachella Valley California: A Pictorial History. The Donning Company, Virginia Beach, Virginia. NETR (Nationwide Environmental Title Research) Online 1972-2018 Aerial photographs of the project vicinity; taken in 1972, 1996, 2002, 2005, 2009, 2010, 2012, 2014, 2016, and 2018. http://www.historicaerials.com. Robinson, W.W. 1948 Land in California. University of California Press, Berkeley. Ross, Delmer G. 1992 Gold Road to La Paz: An Interpretive Guide to the Bradshaw Trail. Tales of the Mojave Road Publishing Company, Essex, California. 13 Schaefer, Jerry 1994 The Challenge of Archaeological Research in the Colorado Desert: Recent Approaches and Discoveries. Journal of California and Great Basin Anthropology 16(1):60-80. Shields Date Gardens 1957 Coachella Valley Desert Trails and the Romance and Sex Life of the Date. Shields Date Gardens, Indio. Strong, William Duncan 1929 Aboriginal Society in Southern California. University of California Publications in American Archaeology and Ethnology, Vol. 26. Reprinted by Malki Museum Press, Banning, California, 1972. USGS (United States Geological Survey, U.S. Department of the Interior) 1904 Map: Indio, Calif. (30’, 1:125,000); surveyed in 1901. 1941 Map: Edom, Calif. (15’, 1:62,500); aerial photographs taken in 1941. 1958a Map: Cathedral City, Calif. (7.5’, 1:24,000); aerial photographs taken in1956. 1958b Map: Myoma, Calif. (7.5’, 1:24,000); aerial photographs taken in1956, field-checked 1958. 1978 Map: Myoma, Calif. (7.5’, 1:24,000); 1958 edition photorevised in 1972, photoinspected in 1978. 1979 Map: Santa Ana, Calif. (120’x60’, 1:250,000); 1959 edition revised. 1981 Map: Cathedral City, Calif. (7.5’, 1:24,000); 1958 edition photorevised in 1978. 14 APPENDIX 1: PERSONNEL QUALIFICATIONS PRINCIPAL INVESTIGATOR/HISTORIAN Bai “Tom” Tang, M.A. Education 1988-1993 Graduate Program in Public History/Historic Preservation, University of California, Riverside. 1987 M.A., American History, Yale University, New Haven, Connecticut. 1982 B.A., History, Northwestern University, Xi’an, China. 2000 “Introduction to Section 106 Review,” presented by the Advisory Council on Historic Preservation and the University of Nevada, Reno. 1994 “Assessing the Significance of Historic Archaeological Sites,” presented by the Historic Preservation Program, University of Nevada, Reno. Professional Experience 2002- Principal Investigator, CRM TECH, Riverside/Colton, California. 1993-2002 Project Historian/Architectural Historian, CRM TECH, Riverside, California. 1993-1997 Project Historian, Greenwood and Associates, Pacific Palisades, California. 1991-1993 Project Historian, Archaeological Research Unit, University of California, Riverside. 1990 Intern Researcher, California State Office of Historic Preservation, Sacramento. 1990-1992 Teaching Assistant, History of Modern World, University of California, Riverside. 1988-1993 Research Assistant, American Social History, University of California, Riverside. 1985-1988 Research Assistant, Modern Chinese History, Yale University. 1985-1986 Teaching Assistant, Modern Chinese History, Yale University. 1982-1985 Lecturer, History, Xi’an Foreign Languages Institute, Xi’an, China. Cultural Resources Management Reports Preliminary Analyses and Recommendations Regarding California’s Cultural Resources Inventory System (with Special Reference to Condition 14 of NPS 1990 Program Review Report). California State Office of Historic Preservation working paper, Sacramento, September 1990. Numerous cultural resources management reports with the Archaeological Research Unit, Greenwood and Associates, and CRM TECH, since October 1991. 15 PRINCIPAL INVESTIGATOR/ARCHAEOLOGIST Michael Hogan, Ph.D., RPA (Registered Professional Archaeologist) Education 1991 Ph.D., Anthropology, University of California, Riverside. 1981 B.S., Anthropology, University of California, Riverside; with honors. 1980-1981 Education Abroad Program, Lima, Peru. 2002 “Section 106—National Historic Preservation Act: Federal Law at the Local Level,” UCLA Extension Course #888. 2002 “Recognizing Historic Artifacts,” workshop presented by Richard Norwood, Historical Archaeologist. 2002 “Wending Your Way through the Regulatory Maze,” symposium presented by the Association of Environmental Professionals. 1992 “Southern California Ceramics Workshop,” presented by Jerry Schaefer. 1992 “Historic Artifact Workshop,” presented by Anne Duffield-Stoll. Professional Experience 2002- Principal Investigator, CRM TECH, Riverside/Colton, California. 1999-2002 Project Archaeologist/Field Director, CRM TECH, Riverside, California. 1996-1998 Project Director and Ethnographer, Statistical Research, Inc., Redlands, California. 1992-1998 Assistant Research Anthropologist, University of California, Riverside. 1992-1995 Project Director, Archaeological Research Unit, U.C. Riverside. 1993-1994 Adjunct Professor, Riverside Community College, Mt. San Jacinto College, U.C. Riverside, Chapman University, and San Bernardino Valley College. 1991-1992 Crew Chief, Archaeological Research Unit, U.C. Riverside. 1984-1998 Project Director, Field Director, Crew Chief, and Archaeological Technician for various southern California cultural resources management firms. Research Interests Cultural Resource Management, Southern Californian Archaeology, Settlement and Exchange Patterns, Specialization and Stratification, Culture Change, Native American Culture, Cultural Diversity. Cultural Resources Management Reports Principal investigator for, author or co-author of, and contributor to numerous cultural resources management study reports since 1986. Memberships Society for American Archaeology; Society for California Archaeology; Pacific Coast Archaeological Society; Coachella Valley Archaeological Society. 16 PROJECT ARCHAEOLOGIST/FIELD DIRECTOR Daniel Ballester, M.S., RPA (Registered Professional Archaeologist) Education 2013 M.S., Geographic Information System (GIS), University of Redlands, California. 1998 B.A., Anthropology, California State University, San Bernardino. 1997 Archaeological Field School, University of Las Vegas and University of California, Riverside. 1994 University of Puerto Rico, Rio Piedras, Puerto Rico. Professional Experience 2002- Field Director/GIS Specialist, CRM TECH, Riverside/Colton, California. 2011-2012 GIS Specialist for Caltrans District 8 Project, Garcia and Associates, San Anselmo, California. 2009-2010 Field Crew Chief, Garcia and Associates, San Anselmo, California. 2009-2010 Field Crew, ECorp, Redlands. 1999-2002 Project Archaeologist, CRM TECH, Riverside, California. 1998-1999 Field Crew, K.E.A. Environmental, San Diego, California. 1998 Field Crew, A.S.M. Affiliates, Encinitas, California. 1998 Field Crew, Archaeological Research Unit, University of California, Riverside. Cultural Resources Management Reports Field Director, co-author, and contributor to numerous cultural management reports since 2002. PROJECT ARCHAEOLOGIST/NATIVE AMERICAN LIAISON Nina Gallardo, B.A. Education 2004 B.A., Anthropology/Law and Society, University of California, Riverside. Professional Experience 2004- Project Archaeologist, CRM TECH, Riverside/Colton, California. Cultural Resources Management Reports Co-author of and contributor to numerous cultural resources management reports since 2004. 17 APPENDIX 2 SACRED LANDS FILE SEARCH RESULTS STATE OF CALIFORNIA Gavin Newsom, Governor NATIVE AMERICAN HERITAGE COMMISSION Page 1 of 1 November 19, 2021 Nina Gallardo CRM TECH Via Email to: ngallardo@crmtech.us Re: Proposed Crossings at Palm Desert Project, Riverside County Dear Ms. Gallardo: A record search of the Native American Heritage Commission (NAHC) Sacred Lands File (SLF) was completed for the information you have submitted for the above referenced project. The results were negative. However, the absence of specific site information in the SLF does not indicate the absence of cultural resources in any project area. Other sources of cultural resources should also be contacted for information regarding known and recorded sites. Attached is a list of Native American tribes who may also have knowledge of cultural resources in the project area. This list should provide a starting place in locating areas of potential adverse impact within the proposed project area. I suggest you contact all of those indicated; if they cannot supply information, they might recommend others with specific knowledge. By contacting all those listed, your organization will be better able to respond to claims of failure to consult with the appropriate tribe. If a response has not been received within two weeks of notification, the Commission requests that you follow-up with a telephone call or email to ensure that the project information has been received. If you receive notification of change of addresses and phone numbers from tribes, please notify me. With your assistance, we can assure that our lists contain current information. If you have any questions or need additional information, please contact me at my email address: Andrew.Green@nahc.ca.gov. Sincerely, Andrew Green Cultural Resources Analyst Attachment S N N C CHAIRPERSON Laura Miranda Luiseño VICE CHAIRPERSON Reginald Pagaling Chumash PARLIAMENTARIAN Russell Attebery Karuk COMMISSIONER William Mungary Paiute/White Mountain Apache COMMISSIONER Isaac Bojorquez Ohlone-Costanoan COMMISSIONER Sara Dutschke Miwok COMMISSIONER Buffy McQuillen Yokayo Pomo, Yuki, Nomlaki COMMISSIONER Wayne Nelson Luiseño COMMISSIONER Stanley Rodriguez Kumeyaay EXECUTIVE SECRETARY Christina Snider Pomo NAHC HEADQUARTERS 1550 Harbor Boulevard Suite 100 West Sacramento, California 95691 (916) 373-3710 nahc@nahc.ca.gov NAHC.ca.gov Agua Caliente Band of Cahuilla Indians Patricia Garcia-Plotkin, Director 5401 Dinah Shore Drive Palm Springs, CA, 92264 Phone: (760) 699 - 6907 Fax: (760) 699-6924 ACBCI-THPO@aguacaliente.net Cahuilla Agua Caliente Band of Cahuilla Indians Jeff Grubbe, Chairperson 5401 Dinah Shore Drive Palm Springs, CA, 92264 Phone: (760) 699 - 6800 Fax: (760) 699-6919 Cahuilla Augustine Band of Cahuilla Mission Indians Amanda Vance, Chairperson P.O. Box 846 Coachella, CA, 92236 Phone: (760) 398 - 4722 Fax: (760) 369-7161 hhaines@augustinetribe.com Cahuilla Cabazon Band of Mission Indians Doug Welmas, Chairperson 84-245 Indio Springs Parkway Indio, CA, 92203 Phone: (760) 342 - 2593 Fax: (760) 347-7880 jstapp@cabazonindians-nsn.gov Cahuilla Cahuilla Band of Indians Daniel Salgado, Chairperson 52701 U.S. Highway 371 Anza, CA, 92539 Phone: (951) 763 - 5549 Fax: (951) 763-2808 Chairman@cahuilla.net Cahuilla Los Coyotes Band of Cahuilla and Cupeño Indians Ray Chapparosa, Chairperson P.O. Box 189 Warner Springs, CA, 92086-0189 Phone: (760) 782 - 0711 Fax: (760) 782-0712 Cahuilla Morongo Band of Mission Indians Robert Martin, Chairperson 12700 Pumarra Road Banning, CA, 92220 Phone: (951) 755 - 5110 Fax: (951) 755-5177 abrierty@morongo-nsn.gov Cahuilla Serrano Morongo Band of Mission Indians Ann Brierty, THPO 12700 Pumarra Road Banning, CA, 92220 Phone: (951) 755 - 5259 Fax: (951) 572-6004 abrierty@morongo-nsn.gov Cahuilla Serrano Quechan Tribe of the Fort Yuma Reservation Jill McCormick, Historic Preservation Officer P.O. Box 1899 Yuma, AZ, 85366 Phone: (760) 572 - 2423 historicpreservation@quechantrib e.com Quechan Quechan Tribe of the Fort Yuma Reservation Manfred Scott, Acting Chairman Kw'ts'an Cultural Committee P.O. Box 1899 Yuma, AZ, 85366 Phone: (928) 750 - 2516 scottmanfred@yahoo.com Quechan 1 of 2 This list is current only as of the date of this document. Distribution of this list does not relieve any person of statutory responsibility as defined in Section 7050.5 of the Health and Safety Code, Section 5097.94 of the Public Resource Section 5097.98 of the Public Resources Code. This list is only applicable for contacting local Native Americans with regard to cultural resources assessment for the proposed Proposed Crossings at Palm Desert Project, Riverside County. PROJ-2021- 005686 11/19/2021 02:09 PM Native American Heritage Commission Native American Contact List Riverside County 11/19/2021 Ramona Band of Cahuilla Joseph Hamilton, Chairperson P.O. Box 391670 Anza, CA, 92539 Phone: (951) 763 - 4105 Fax: (951) 763-4325 admin@ramona-nsn.gov Cahuilla Ramona Band of Cahuilla John Gomez, Environmental Coordinator P. O. Box 391670 Anza, CA, 92539 Phone: (951) 763 - 4105 Fax: (951) 763-4325 jgomez@ramona-nsn.gov Cahuilla Santa Rosa Band of Cahuilla Indians Lovina Redner, Tribal Chair P.O. Box 391820 Anza, CA, 92539 Phone: (951) 659 - 2700 Fax: (951) 659-2228 lsaul@santarosa-nsn.gov Cahuilla Soboba Band of Luiseno Indians Isaiah Vivanco, Chairperson P. O. Box 487 San Jacinto, CA, 92581 Phone: (951) 654 - 5544 Fax: (951) 654-4198 ivivanco@soboba-nsn.gov Cahuilla Luiseno Soboba Band of Luiseno Indians Joseph Ontiveros, Cultural Resource Department P.O. BOX 487 San Jacinto, CA, 92581 Phone: (951) 663 - 5279 Fax: (951) 654-4198 jontiveros@soboba-nsn.gov Cahuilla Luiseno Torres-Martinez Desert Cahuilla Indians Michael Mirelez, Cultural Resource Coordinator P.O. Box 1160 Thermal, CA, 92274 Phone: (760) 399 - 0022 Fax: (760) 397-8146 mmirelez@tmdci.org Cahuilla 2 of 2 This list is current only as of the date of this document. Distribution of this list does not relieve any person of statutory responsibility as defined in Section 7050.5 of the Health and Safety Code, Section 5097.94 of the Public Resource Section 5097.98 of the Public Resources Code. This list is only applicable for contacting local Native Americans with regard to cultural resources assessment for the proposed Proposed Crossings at Palm Desert Project, Riverside County. PROJ-2021- 005686 11/19/2021 02:09 PM Native American Heritage Commission Native American Contact List Riverside County 11/19/2021 8711 Monroe Court, Suite A Rancho Cucamonga, CA 91730 (909) 980-6455 Office (909) 980-6435 Fax SAN JOSE ▪ STOCKTON ▪ FRESNO ▪ BAKERSFIELD ▪ RANCHO CUCAMONGA ▪ DALLAS DALLAS, TX, ▪ DENVER, CO ▪ CHARLESTON, SC November 2, 2021 Job No. 3-221-1146 Ms. Lauren Reese The Altum Group 44-600 Village Court, Suite 100 Palm Desert, CA 92260 SUBJECT: GEOTECHNICAL INVESTIGATION REPORT UPDATE PROPOSED APARTMENT COMPLEX DICK KELLY DRIVE & GATEWAY DRIVE PALM DESERT, CALIFORNIA Reference: Salem Engineering Group, Inc. (SALEM), Geotechnical Engineering Investigation Report, Proposed Apartment Complex, 35th Avenue and Gateway Drive, Palm Desert, California, SALEM Project No. 3-208-0025, Dated January 24, 2008 Dear Ms. Reese: In accordance with your request, we have provided this letter to update the above referenced Geotechnical Report for the proposed Apartment Complex to be located at the subject site in Palm Desert, California. In addition, two (2) percolation tests were performed at depths of approximately 4.3 and 8 feet below existing grade at the proposed infiltration basin area for determination of infiltration rate. The locations of the percolation tests are depicted on Figure 1, Site Plan. The subject site is rectangular in shape and encompasses approximately 11.8 acres. The site is located on the southeast corner of Dick Kelly Drive and Gateway Drive in the City of Palm Desert, Riverside County, California. The site is surrounded predominately by commercial and residential developments and vacant land. The site is gently sloping to the northeast with elevations ranging from 261 to 219 feet above mean sea level based on Google Earth imagery. At the time of our field investigation in January 2008, the site was a vacant undeveloped land with sparse vegetation. The site was revisited on November 1, 2021, and the site conditions were found to remain the same as January 2008. Photos of the site from November 1, 2021, are presented below: Project No. 3-221-1146 November 2, 2021 Page No. 2 Looking to the West from NEC of the site Looking to the East from NWC of the site Based on our review of the referenced report and recent site visit, the above mentioned report is considered, from a geotechnical standpoint, to remain valid for the proposed development except the seismic design parameters and subsequent seismic densification analysis needed to be updated. The 2008 report presented seismic design criteria based on the 2007 California Building Code (CBC). Seismic design criteria have now been incorporated into the 2019 California Building Code (CBC) and are applicable as of January 1, 2020. Project No. 3-221-1146 November 2, 2021 Page No. 3 Site Coefficients For seismic design of the structures, and in accordance with the seismic provisions of the 2019 CBC, our recommended parameters are shown below. These parameters were determined using Office of Statewide Health Planning and Development (OSHPD) Seismic Design Maps by location website (https://seismicmaps.org/), in accordance with the 2019 CBC. The Site Class was determined based on the soils encountered during our field exploration. 2019 CBC SEISMIC DESIGN PARAMETERS Seismic Item Symbol Value ASCE 7-16 or 2019 CBC Reference Site Coordinates (Datum = NAD 83) 33.7938 Lat -116.3816 Lon Site Class -- D ASCE 7 Table 20.3-1 Soil Profile Name -- Stiff Soil ASCE 7 Table 20.3-1 Risk Category -- II CBC Table 1604.5 Site Coefficient for PGA FPGA 1.1 ASCE 7 Table 11.8-1 Peak Ground Acceleration (adjusted for Site Class effects) PGAM 0.879 g ASCE 7 Equation 11.8-1 Seismic Design Category SDC E CBC Table 1613.2.5 Mapped Spectral Acceleration (Short period - 0.2 sec) SS 1.843 g CBC Figure 1613.2.1(1-8) Mapped Spectral Acceleration (1.0 sec. period) S1 0.767 g CBC Figure 1613.2.1(1-8) Site Class Modified Site Coefficient Fa 1 CBC Table 1613.2.3(1) Site Class Modified Site Coefficient Fv 1.7* CBC Table 1613.2.3(2) MCE Spectral Response Acceleration (Short period - 0.2 sec) SMS = Fa SS SMS 1.843 g CBC Equation 16-36 MCE Spectral Response Acceleration (1.0 sec. period) SM1 = Fv S1 SM1 1.304 g* CBC Equation 16-37 Design Spectral Response Acceleration SDS=⅔SMS (short period - 0.2 sec) SDS 1.228 g CBC Equation 16-38 Design Spectral Response Acceleration SD1=⅔SM1 (1.0 sec. period) SD1 0.869 g* CBC Equation 16-39 Short Period Transition Period(SD1/SDS), Seconds TS 0.708 ASCE 7-16, Section 11.4.6 Long Period Transition period(seconds) TL 8 ASCE 7-16, Figures 22-14 Note: * Determined per ASCE Table 11.4.-2 for use in calculating TS only Project No. 3-221-1146 November 2, 2021 Page No. 4 Site Specific Ground Motion Analysis was not included in the scope of this update. Per ASCE 11.4.8, Structures on Site Class D, with S1 greater than or equal to 0.2 may require Site Specific Ground Motion Analysis. However, a site specific ground motion analysis may not be required based on Exceptions listed in ASCE 11.4.8. The Structural Engineer should verify whether Exception No. 2 of ASCE 7-16, Section 11.4.8 is valid for the site. In the event a site specific ground motion analysis is required, SALEM should be contacted for these services. Conformance to the criteria in the above table for seismic design does not constitute any kind of guarantee or assurance that significant structural damage or ground failure will not occur if a large earthquake occurs. The primary goal of seismic design is to protect life, not to avoid all damage, since such design may be economically prohibitive. Seismic Densification Analysis A common phenomena during seismic shaking accompanying any earthquake is the induced settlement of loose unconsolidated soils. Based on site subsurface conditions and the high seismicity of the region, any loose granular materials at the site could be vulnerable to this potential hazard. Our analysis of dynamic densification of “dry” soil in the upper 50 feet of existing soil profile was performed. For the analysis, a maximum earthquake magnitude of 8.2 Mw and a peak horizontal ground surface acceleration of 0.879g (with a 2 percent probability of exceedance in 50 years) were considered appropriate for the analysis. The seismic densification of dry to damp alluvial sandy soils due to onsite seismic activity was calculated to have a total settlement of approximately 1.27 inches. Differential settlement is calculated to be on the order of approximately 0.64 inches. The recommendations presented in the 2008 report are considered to be valid for the proposed development of the site. The settlement analysis is attached at the end of this report update. Percolation Testing Two percolation tests (P-1 and P-2) were performed within assumed infiltration areas and were conducted in accordance with in accordance with the guidelines established by the County of Riverside. The approximate locations of the percolation tests are shown on the attached Site Plan, Figure 1. The boreholes were advanced to the depths shown on the percolation test worksheets. The holes were pre- saturated before percolation testing commenced. Percolation rates were measured by filling the test holes with clean water and measuring the water drops at a certain time interval. The percolation rate data are presented in tabular format at the end of this report. The difference in the percolation rates are reflected by the varied type of soil materials at the bottom of the test holes. The test Project No. 3-221-1146 November 2, 2021 Page No. 5 results are shown on the table below. PERCOLATION TEST RESULTS Test No. Depth (feet) Measured Percolation Rate (min/inch) Infiltration Rate* (inch/hour) Soil Type** P-1 8 0.2 23.01 SAND (SP) P-2 4.3 0.3 21.33 SAND (SP) * Tested infiltration Rate = (∆H 60 r) / (∆t(r + 2Havg)), no factor of safety applied **At bottom of test hole. The soil infiltration or percolation rates are based on tests conducted with clear water. The infiltration/percolation rates may vary with time as a result of soil clogging from water impurities. The infiltration/percolation rates will deteriorate over time due to the soil conditions and an appropriate factor of safety (FS) may be applied. The soils may also become less permeable to impermeable if the soil is compacted. Thus, periodic maintenance consisting of clearing the bottom of the drainage system of clogged soils should be expected. The infiltration/percolation rate may become slower if the surrounding soil is wet or saturated due to prolonged rainfalls. Additional percolation tests should be conducted at bottom of the infiltration basin during construction to verify the infiltration/percolation rate. Groundwater, if closer to the bottom of the drainage system, will also reduce the infiltration/percolation rate. Limitations The scope of our services did not include a groundwater study and was limited to the performance of percolation testing and soil profile description, and the submitted data only. Our services did not include those associated with septic system design. Neither did services include an Environmental Site Assessment for the presence or absence of hazardous and/or toxic materials in the soil, groundwater, or atmosphere; or the presence of wetlands. Any statements, or absence of statements, in this report or on any boring logs regarding odors, unusual or suspicious items, or conditions observed, are strictly for descriptive purposes and are not intended to convey engineering judgment regarding potential hazardous and/or toxic assessment. The geotechnical engineering information presented herein is based upon professional interpretation utilizing standard engineering practices. The work conducted through the course of this investigation, including the preparation of this report, has been performed in accordance with the generally accepted standards of geotechnical engineering practice, which existed in the geographic area at the time the report was written. No other warranty, express or implied, is made. Project No. 3-221-1146 November 2, 2021 Page No. 6 Please be advised that when performing percolation testing services in relatively small diameter borings, that the testing may not fully model the actual full scale long term performance of a given site. This is particularly true where percolation test data is to be used in the design of large infiltration system such as may be proposed for the site. The measured percolation rate includes dispersion of the water at the sidewalls of the boring as well as into the underlying soils. Subsurface conditions, including percolation rates, can change over time as fine-grained soils migrate. It is not warranted that such information and interpretation cannot be superseded by future geotechnical engineering developments. We emphasize that this report is valid for the project outlined above and should not be used for any other sites. The recommendations and limitations provided in the Geotechnical Engineering Investigation Report apply to this letter. If you have any questions, or if we may be of further assistance, please do not hesitate to contact our office at (909) 980-6455. Respectfully submitted, SALEM ENGINEERING GROUP, INC. Jared Christiansen, EIT Clarence Jiang, GE Geotechnical Staff Engineer Senior Geotechnical Engineer RGE 2477 Attachments: Site Plan, Figure 1 Seismic Densification Analysis Percolation Test Results, P-1 and P-2 SITE PLAN GEOTECHNICAL ENGINEERING INVESTIGATION Proposed Apartment Complex Dick Kelly Drive & Gateway Drive Palm Desert, California SCALE:DATE: NOT TO SCALE 11/2021 DRAWN BY:APPROVED BY: JC CJ PROJECT NO.FIGURE NO. 3-221-1146 1 LEGEND: Percolation Locations All Locations Approximate P-1 P-2 DRY SETTLEMENT DUE TO EARTHQUAKE SHAKING * Use Fig. 11 of Tokimat Job No.3-221-1146 Job Name Proposed Apartment Complex ** Use Fig. 13 of Tokima Boring No. B-3 Drill Date 01/15/08 *** MSF=102.24/Mw2.56 # CN=2.2/(1.2+σ'o/Pa) User Input Section Earthquake Data Drilling GW Depth (ft)50 Mag. (Mw)8.2 Earthquake GW Depth (ft)50 amax/g 0.879 Rod Stick-Up (ft)3 Lookup Tables MSF*** 0.80 SPT N-Value Correction Factors % Fines ΔN Length Energy Ratio CE 1.60 Notes 0 0 1 0 Borehole Dia.CB 1.05 Notes 10 1 12 0 Sampling Method CS 1.2 Notes 25 2 20 0 Factor of Safety FS 1.0 50 4 30 0 Rod Length CR Calculated 75 5 33 Overburden Press CN Calculated During Drilling During EQ Depth Dry Unit Fines SPT Layer Unit Total σo bottom Total σo mid-pt. Eff. σ'o SPT Fines Corct'd SPT Eff. σ'oeq (ft) USCS Wt (pcf)w (%)%Field N (ft)Wt (pcf) (psf) (psf) (psf) CN #(N1)60 ΔN (N1)60f (psf)σo 2 SP 105 3.1 4 8 2.0 108.3 217 108 108 1.75 21.2 0.0 21.2 108 1 5 SP 105 2.0 4 13 3.0 107.1 538 377 377 1.58 31.1 0.0 31.1 377 1 10 SP 105 0.5 5 32 5.0 105.5 1065 802 802 1.37 75.4 0.0 75.4 802 1 15 SP-SM 105 0.5 8 22 5.0 105.5 1593 1329 1329 1.18 44.5 0.0 44.5 1329 1 20 SP 105 0.6 5 15 5.0 105.6 2121 1857 1857 1.03 29.7 0.0 29.7 1857 1 25 SP 105 0.4 5 29 5.0 105.4 2648 2385 2385 0.92 51.1 0.0 51.1 2385 1 30 SP 105 0.4 5 29 5.0 105.4 3175 2912 2912 0.83 48.4 0.0 48.4 2912 1 35 SP-SM 105 0.4 8 32 5.0 105.4 3703 3439 3439 0.75 48.6 0.0 48.6 3439 1 40 SP-SM 105 0.4 8 32 5.0 105.4 4230 3966 3966 0.69 44.6 0.0 44.6 3966 1 45 SP 105 0.4 3 43 5.0 105.4 4757 4493 4493 0.64 55.3 0.0 55.3 4493 1 50 SP 105 0.4 3 43 5.0 105.4 5284 5020 5020 0.59 51.4 0.0 51.4 5020 1 The total seismic-induced settlement calculation is based on a water table depth of 50 feet below Project: Job No.: Poorly graded SAND (SP)Hole Ra Pipe Test Hole No.:P-1 Presoaking Date:Total Depth of H Tested by: JC Test Date: Drilled Hole Depth: 8.0 ft.Pipe Stic Time Start Time Finish Depth of Test Hole (ft)# Refill- Yes or No Elapsed Time (hrs:min) Initial Water Level# (ft) Final Water Level# (ft) Δ Water Level (in.)Δ Min. Meas. Perc Rate (min/in) Initial Height of Water (in) Fin Heig Wate 10:10 10:35 10.0 Y 0:25 6.00 Empty - 25 - - - 10:37 11:02 10.0 Y 0:25 6.00 Empty - 25 - - - 11:04 11:09 10.0 Y 0:05 6.00 8.73 32.76 5 0.2 48.0 15 11:09 11:14 10.0 N 0:05 8.73 Empty - 5 - - - 11:15 11:20 10.0 Y 0:05 6.00 8.70 32.40 5 0.2 48.0 15 11:20 11:25 10.0 N 0:05 8.70 Empty - 5 - - - 11:26 11:31 10.0 Y 0:05 6.00 8.72 32.64 5 0.2 48.0 15 11:31 11:36 10.0 N 0:05 8.72 Empty - 5 - - - 11:37 11:42 10.0 Y 0:05 6.00 8.71 32.52 5 0.2 48.0 15 11:42 11:47 10.0 N 0:05 8.71 Empty - 5 - - - 11:48 11:53 10.0 Y 0:05 6.00 8.70 32.40 5 0.2 48.0 15 11:53 11:58 10.0 N 0:05 8.70 Empty - 5 - - - 11:59 12:04 10.0 Y 0:05 6.00 8.70 32.40 5 0.2 48.0 15 12:04 12:09 10.0 N 0:05 8.70 Empty - 5 - - - Recommended for Design:Infiltration 11/1/2021 Palm Desert, California Soil Classification: 11/1/2021 11/1/2021 Percolation Test Worksheet Proposed Apartment Complex 3-221-1146 Dick Kelly Drive & Gateway Drive Date Drilled: Project: Job No.: 3-221-1146 Date Drilled: Soil Classification: Poorly graded SAND (SP)Hole Ra Pipe Test Hole No.:P-2 Presoaking Date:Total Depth of H Tested by: JC Test Date: Drilled Hole Depth: 4.3 ft.Pipe Stic Time Start Time Finish Depth of Test Hole (ft)# Refill- Yes or No Elapsed Time (hrs:min) Initial Water Level# (ft) Final Water Level# (ft) Δ Water Level (in.)Δ Min. Meas. Perc Rate (min/in) Initial Height of Water (in) Fin Heig Wate 8:10 8:35 4.8 Y 0:25 3.00 Empty - 25 - - - 8:36 9:01 4.8 Y 0:25 3.00 Empty - 25 - - - 9:02 9:07 4.8 Y 0:05 3.00 4.24 14.88 5 0.3 21.6 6. 9:07 9:12 4.8 N 0:05 3.00 Empty - 5 - - - 9:13 9:18 4.8 Y 0:05 3.00 4.22 14.64 5 0.3 21.6 7. 9:18 9:23 4.8 N 0:05 3.00 Empty - 5 - - - 9:24 9:29 4.8 Y 0:05 3.00 4.23 14.76 5 0.3 21.6 6. 9:29 9:34 4.8 N 0:05 3.00 Empty - 5 - - - 9:35 9:40 4.8 Y 0:05 3.00 4.22 14.64 5 0.3 21.6 7. 9:40 9:45 4.8 N 0:05 3.00 Empty - 5 - - - 9:46 9:51 4.8 Y 0:05 3.00 4.21 14.52 5 0.3 21.6 7. 9:51 9:56 4.8 N 0:05 3.00 Empty - 5 - - - 9:57 10:02 4.8 Y 0:05 3.00 4.22 14.64 5 0.3 21.6 7. 10:02 10:07 4.8 N 0:05 3.00 Empty - 5 - - - Recommended for Design:Infiltration 11/1/2021 Percolation Test Worksheet Proposed Apartment Complex Dick Kelly Drive & Gateway Drive 11/1/2021 Palm Desert, California 11/1/2021                                    !"     #       $      %&'()*! #+ , ! )-. ! / #0.-     011                                !  2&"22222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222 2222222222222222222 2"   !"3$4 ,   2! +  !"   20 4    2!"   2 "  ' 22222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222222 22222222222- 2!"'  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e#= Short-Term Monitoring Location 21 3 Crossing at Palm Springs Noise Impact Study City of Palm Springs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www.mdacoustics.com AZ Office 4960 S. Gilbert Rd, Ste 1-461 Chandler, AZ 85249 Project:Crossing at Palm Desert Site Observations: Site Address/Location:S.E. corner Gateway Dr. & Dick Kelly Dr., Palm Desert, CA Date: Field Tech/Engineer:Jason Schuyler General Location: Sound Meter:NTi Audio SN:A2A-05967-E0 Site Topo: Settings:A-weighted, slow, 1-sec, 10-minute interval Ground Type: Meteorological Con.:78 degrees F, minimal wind. Site ID:ST1 thru ST3 20-Minute Continuous Noise Measurement Datasheet ST1-23' from Gateway dr. curb ST-2 15' from road on E. side o Clear sky, measurements were performed o Desert conditions Noise Source(s) w/ Di Flat Sandy soil Figure 1: Monitoring Locations 10/19/2021 ST3- middle of lot Figure Figure 20Min_Field Sheet Awtg ST1-3 Crossing at Palm Desert www.mdacoustics.com AZ Office 4960 S. Gilbert Rd, Ste 1-461 Chandler, AZ 85249 Project:Crossing at Palm Desert Site Address/Location:S.E. corner Gateway Dr. & Dick Kelly Dr., Palm Desert, CA Site ID:ST1 thru ST3 Location Start Stop Leq Lmax Lmin L2 L8 L25 L50 L90 1 2:32 PM 2:52 PM 52.9 67.5 40.4 48.4 42.2 2 3:00 PM 3:20 PM 53.6 74.0 41.6 62.2 56.6 49.6 45.8 42.8 3 2:55 PM 3:15 PM 46.5 64.7 38.9 43.2 40.4 Figure 4: ST3 Photo 20-Minute Continuous Noise Measurement Datasheet Table 1: Baseline Noise Measurement Summary 20Min_Field Sheet Awtg ST1-3 Crossing at Palm Desert FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:I10 2040 DATE:5-Nov-21 LOCATION:Site 1st floor ENGINEER:C Pincock ADT =162,176 RECEIVER DISTANCE = 2,000 SPEED =65 DIST C/L TO WALL =0 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 100 WALL DISTANCE FROM RECEIVER 1,000 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =16,218 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 15 HTH WALL 0.0 MEDIUM TRUCKS =15 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =15 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.104 0.6750 AUTOMOBILES 2.0 1999.38 MEDIUM TRUCK 0.020 0.500 0.0504 MEDIUM TRUCKS 4.0 1999.38 HEAVY TRUCKS 0.020 0.500 0.2746 HEAVY TRUCKS 8.0 1999.38 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 57.2 55.2 53.9 47.8 56.2 56.9 MEDIUM TRUCKS 52.1 48.1 40.3 49.5 55.7 55.7 HEAVY TRUCKS 62.9 58.9 51.2 60.4 66.5 66.6 NOISE LEVELS (dBA)64.2 60.7 55.9 60.9 67.2 67.3 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 57.2 55.2 53.9 47.8 56.2 56.9 MEDIUM TRUCKS 52.1 48.1 40.3 49.5 55.7 55.7 HEAVY TRUCKS 62.9 58.9 51.2 60.4 66.5 66.6 NOISE LEVELS (dBA)64.2 60.7 55.9 60.9 67.2 67.3 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 1325 2854 6148 13246 LDN 1308 2817 6069 13076 VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.480 - - 0.480 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:I10 2040 DATE:5-Nov-21 LOCATION:Site 2nd floor ENGINEER:C Pincock ADT =162,176 RECEIVER DISTANCE = 2,000 SPEED =65 DIST C/L TO WALL =0 PK HR % =10 RECEIVER HEIGHT =15.0 NEAR LANE/FAR LANE DIS 100 WALL DISTANCE FROM RECEIVER 2,000 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =16,218 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 15 HTH WALL 0.0 MEDIUM TRUCKS =15 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =15 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.104 0.6750 AUTOMOBILES 2.0 1999.42 MEDIUM TRUCK 0.020 0.500 0.0504 MEDIUM TRUCKS 4.0 1999.41 HEAVY TRUCKS 0.020 0.500 0.2746 HEAVY TRUCKS 8.0 1999.39 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 57.2 55.2 53.9 47.8 56.2 56.9 MEDIUM TRUCKS 52.1 48.1 40.3 49.5 55.7 55.7 HEAVY TRUCKS 62.9 58.9 51.2 60.4 66.5 66.6 NOISE LEVELS (dBA)64.2 60.7 55.9 60.9 67.2 67.3 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 57.2 55.2 53.9 47.8 56.2 56.9 MEDIUM TRUCKS 52.1 48.1 40.3 49.5 55.7 55.7 HEAVY TRUCKS 62.9 58.9 51.2 60.4 66.5 66.6 NOISE LEVELS (dBA)64.2 60.7 55.9 60.9 67.2 67.3 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 1325 2854 6148 13246 LDN 1308 2817 6069 13075 VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.480 - - 0.480 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:I10 2040 DATE:5-Nov-21 LOCATION:Site 2nd floor ENGINEER:C Pincock ADT =162,176 RECEIVER DISTANCE = 2,000 SPEED =65 DIST C/L TO WALL =0 PK HR % =10 RECEIVER HEIGHT =25.0 NEAR LANE/FAR LANE DIS 100 WALL DISTANCE FROM RECEIVER 2,000 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =16,218 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 15 HTH WALL 0.0 MEDIUM TRUCKS =15 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =15 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.104 0.6750 AUTOMOBILES 2.0 1999.51 MEDIUM TRUCK 0.020 0.500 0.0504 MEDIUM TRUCKS 4.0 1999.49 HEAVY TRUCKS 0.020 0.500 0.2746 HEAVY TRUCKS 8.0 1999.45 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 57.2 55.2 53.9 47.8 56.2 56.9 MEDIUM TRUCKS 52.1 48.1 40.3 49.5 55.7 55.7 HEAVY TRUCKS 62.9 58.9 51.2 60.4 66.5 66.6 NOISE LEVELS (dBA)64.2 60.7 55.9 60.9 67.2 67.3 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 57.2 55.2 53.9 47.8 56.2 56.9 MEDIUM TRUCKS 52.1 48.1 40.3 49.5 55.7 55.7 HEAVY TRUCKS 62.9 58.9 51.2 60.4 66.5 66.6 NOISE LEVELS (dBA)64.2 60.7 55.9 60.9 67.2 67.3 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 1325 2854 6148 13246 LDN 1308 2817 6069 13075 VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.480 - - 0.480 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Dinah Shore DATE:5-Nov-21 LOCATION:50 ft from Roadline ENGINEER:C Pincock ADT =15,953 RECEIVER DISTANCE = 50 SPEED =45 DIST C/L TO WALL =0 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 60 WALL DISTANCE FROM RECEIVER 50 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =1,595 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 10 HTH WALL 0.0 MEDIUM TRUCKS =10 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =10 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.104 0.9200 AUTOMOBILES 2.0 40.11 MEDIUM TRUCK 0.020 0.500 0.0300 MEDIUM TRUCKS 4.0 40.01 HEAVY TRUCKS 0.020 0.500 0.0500 HEAVY TRUCKS 8.0 40.11 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 70.1 68.0 66.8 60.7 69.1 69.8 MEDIUM TRUCKS 63.5 59.5 51.7 60.9 67.1 67.1 HEAVY TRUCKS 70.2 66.2 58.4 67.7 73.8 73.8 NOISE LEVELS (dBA)73.6 70.6 67.5 69.2 75.7 75.9 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 70.1 68.0 66.8 60.7 69.1 69.8 MEDIUM TRUCKS 63.5 59.5 51.7 60.9 67.1 67.1 HEAVY TRUCKS 70.2 66.2 58.4 67.7 73.8 73.8 NOISE LEVELS (dBA)73.6 70.6 67.5 69.2 75.7 75.9 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 194 614 1942 6143 LDN 187 590 1867 5904 VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.480 - - 0.480 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Dinah Shore plus Project DATE:5-Nov-21 LOCATION:50 ft from Roadline ENGINEER:C Pincock ADT =16,313 RECEIVER DISTANCE = 50 SPEED =45 DIST C/L TO WALL =0 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 60 WALL DISTANCE FROM RECEIVER 50 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =1,631 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 10 HTH WALL 0.0 MEDIUM TRUCKS =10 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =10 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.104 0.9200 AUTOMOBILES 2.0 40.11 MEDIUM TRUCK 0.020 0.500 0.0300 MEDIUM TRUCKS 4.0 40.01 HEAVY TRUCKS 0.020 0.500 0.0500 HEAVY TRUCKS 8.0 40.11 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 70.2 68.1 66.8 60.8 69.2 69.9 MEDIUM TRUCKS 63.6 59.6 51.8 61.0 67.2 67.2 HEAVY TRUCKS 70.3 66.3 58.5 67.8 73.9 73.9 NOISE LEVELS (dBA)73.7 70.7 67.6 69.3 75.8 76.0 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 70.2 68.1 66.8 60.8 69.2 69.9 MEDIUM TRUCKS 63.6 59.6 51.8 61.0 67.2 67.2 HEAVY TRUCKS 70.3 66.3 58.5 67.8 73.9 73.9 NOISE LEVELS (dBA)73.7 70.7 67.6 69.3 75.8 76.0 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 199 628 1986 6281 LDN 191 604 1909 6037 VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.480 - - 0.480 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Monterey Ave DATE:5-Nov-21 LOCATION:50 ft from Roadline ENGINEER:C Pincock ADT =36,594 RECEIVER DISTANCE = 50 SPEED =50 DIST C/L TO WALL =0 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 60 WALL DISTANCE FROM RECEIVER 50 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =3,659 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 10 HTH WALL 0.0 MEDIUM TRUCKS =10 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =10 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.104 0.9200 AUTOMOBILES 2.0 40.11 MEDIUM TRUCK 0.020 0.500 0.0300 MEDIUM TRUCKS 4.0 40.01 HEAVY TRUCKS 0.020 0.500 0.0500 HEAVY TRUCKS 8.0 40.11 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 75.0 73.0 71.7 65.6 74.0 74.7 MEDIUM TRUCKS 67.8 63.8 56.0 65.2 71.4 71.4 HEAVY TRUCKS 74.2 70.3 62.5 71.7 77.8 77.9 NOISE LEVELS (dBA)78.1 75.2 72.3 73.4 80.0 80.2 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 75.0 73.0 71.7 65.6 74.0 74.7 MEDIUM TRUCKS 67.8 63.8 56.0 65.2 71.4 71.4 HEAVY TRUCKS 74.2 70.3 62.5 71.7 77.8 77.9 NOISE LEVELS (dBA)78.1 75.2 72.3 73.4 80.0 80.2 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 523 1654 5229 16535 LDN 500 1581 5001 15814 VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.480 - - 0.480 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Monterey Ave plus Project DATE:5-Nov-21 LOCATION:50 ft from Roadline ENGINEER:C Pincock ADT =36,864 RECEIVER DISTANCE = 50 SPEED =50 DIST C/L TO WALL =0 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 60 WALL DISTANCE FROM RECEIVER 50 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =3,686 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 10 HTH WALL 0.0 MEDIUM TRUCKS =10 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =10 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.104 0.9200 AUTOMOBILES 2.0 40.11 MEDIUM TRUCK 0.020 0.500 0.0300 MEDIUM TRUCKS 4.0 40.01 HEAVY TRUCKS 0.020 0.500 0.0500 HEAVY TRUCKS 8.0 40.11 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 75.0 73.0 71.7 65.6 74.1 74.7 MEDIUM TRUCKS 67.8 63.9 56.1 65.3 71.4 71.5 HEAVY TRUCKS 74.3 70.3 62.5 71.7 77.9 77.9 NOISE LEVELS (dBA)78.1 75.2 72.3 73.4 80.0 80.2 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 75.0 73.0 71.7 65.6 74.1 74.7 MEDIUM TRUCKS 67.8 63.9 56.1 65.3 71.4 71.5 HEAVY TRUCKS 74.3 70.3 62.5 71.7 77.9 77.9 NOISE LEVELS (dBA)78.1 75.2 72.3 73.4 80.0 80.2 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 527 1666 5267 16657 LDN 504 1593 5038 15931 VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.480 - - 0.480 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:I10 2040 DATE:5-Nov-21 LOCATION:Pool ENGINEER:C Pincock ADT =162,176 RECEIVER DISTANCE = 2,500 SPEED =65 DIST C/L TO WALL =0 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 100 WALL DISTANCE FROM RECEIVER 2,500 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =16,218 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 15 HTH WALL 0.0 MEDIUM TRUCKS =15 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =15 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.104 0.6750 AUTOMOBILES 2.0 2499.50 MEDIUM TRUCK 0.020 0.500 0.0504 MEDIUM TRUCKS 4.0 2499.50 HEAVY TRUCKS 0.020 0.500 0.2746 HEAVY TRUCKS 8.0 2499.50 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 55.7 53.7 52.4 46.3 54.8 55.4 MEDIUM TRUCKS 50.6 46.6 38.9 48.1 54.2 54.2 HEAVY TRUCKS 61.5 57.5 49.7 58.9 65.1 65.1 NOISE LEVELS (dBA)62.8 59.3 54.4 59.5 65.8 65.9 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 55.7 53.7 52.4 46.3 54.8 55.4 MEDIUM TRUCKS 50.6 46.6 38.9 48.1 54.2 54.2 HEAVY TRUCKS 61.5 57.5 49.7 58.9 65.1 65.1 NOISE LEVELS (dBA)62.8 59.3 54.4 59.5 65.8 65.9 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 1324 2854 6148 13245 LDN 1307 2817 6068 13074 NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.480 - - 0.480 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Dinah Shore 2040 DATE:5-Nov-21 LOCATION:Site ENGINEER:C Pincock ADT =22,784 RECEIVER DISTANCE = 1,000 SPEED =45 DIST C/L TO WALL =0 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 60 WALL DISTANCE FROM RECEIVER 1,000 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =2,278 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 15 HTH WALL 0.0 MEDIUM TRUCKS =15 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =15 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.104 0.9200 AUTOMOBILES 2.0 999.55 MEDIUM TRUCK 0.020 0.500 0.0300 MEDIUM TRUCKS 4.0 999.55 HEAVY TRUCKS 0.020 0.500 0.0500 HEAVY TRUCKS 8.0 999.55 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 49.9 47.9 46.6 40.5 49.0 49.6 MEDIUM TRUCKS 43.3 39.3 31.6 40.8 46.9 47.0 HEAVY TRUCKS 50.1 46.1 38.3 47.5 53.7 53.7 NOISE LEVELS (dBA)53.4 50.4 47.3 49.0 55.6 55.7 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 49.9 47.9 46.6 40.5 49.0 49.6 MEDIUM TRUCKS 43.3 39.3 31.6 40.8 46.9 47.0 HEAVY TRUCKS 50.1 46.1 38.3 47.5 53.7 53.7 NOISE LEVELS (dBA)53.4 50.4 47.3 49.0 55.6 55.7 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 112 241 520 1120 LDN 109 235 506 1091 VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.480 - - 0.480 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Monterey Ave 2040 DATE:5-Nov-21 LOCATION:Site ENGINEER:C Pincock ADT =52,265 RECEIVER DISTANCE = 1,350 SPEED =50 DIST C/L TO WALL =0 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 60 WALL DISTANCE FROM RECEIVER 1,350 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =5,227 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 15 HTH WALL 0.0 MEDIUM TRUCKS =15 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =15 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.104 0.9200 AUTOMOBILES 2.0 1349.67 MEDIUM TRUCK 0.020 0.500 0.0300 MEDIUM TRUCKS 4.0 1349.67 HEAVY TRUCKS 0.020 0.500 0.0500 HEAVY TRUCKS 8.0 1349.67 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 52.9 50.9 49.6 43.5 51.9 52.6 MEDIUM TRUCKS 45.7 41.7 33.9 43.1 49.3 49.3 HEAVY TRUCKS 52.1 48.1 40.4 49.6 55.7 55.8 NOISE LEVELS (dBA)56.0 53.1 50.2 51.3 57.9 58.1 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 52.9 50.9 49.6 43.5 51.9 52.6 MEDIUM TRUCKS 45.7 41.7 33.9 43.1 49.3 49.3 HEAVY TRUCKS 52.1 48.1 40.4 49.6 55.7 55.8 NOISE LEVELS (dBA)56.0 53.1 50.2 51.3 57.9 58.1 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 217 467 1005 2166 LDN 210 453 976 2103 VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.480 - - 0.480 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Gateway Drive 2040 DATE:5-Nov-21 LOCATION:Site ENGINEER:C Pincock ADT =3,555 RECEIVER DISTANCE = 130 SPEED =45 DIST C/L TO WALL =50 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 50 WALL DISTANCE FROM RECEIVER 80 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =356 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 15 HTH WALL 0.0 MEDIUM TRUCKS =15 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =15 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.105 0.9742 AUTOMOBILES 2.0 127.61 MEDIUM TRUCK 0.022 0.489 0.0184 MEDIUM TRUCKS 4.0 127.58 HEAVY TRUCKS 0.054 0.473 0.0074 HEAVY TRUCKS 8.0 127.61 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 55.5 53.5 52.2 46.2 54.6 55.2 MEDIUM TRUCKS 46.5 42.6 35.2 43.9 50.1 50.1 HEAVY TRUCKS 47.1 43.1 39.7 44.3 50.5 50.6 NOISE LEVELS (dBA)56.5 54.2 52.5 49.7 57.0 57.4 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 55.5 53.5 52.2 46.2 54.6 55.2 MEDIUM TRUCKS 46.5 42.6 35.2 43.9 50.1 50.1 HEAVY TRUCKS 47.1 43.1 39.7 44.3 50.5 50.6 NOISE LEVELS (dBA)56.5 54.2 52.5 49.7 57.0 57.4 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 19 40 87 188 LDN 18 38 82 177 NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.489 - - 0.473 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Dick Kelly Dr 2040 DATE:5-Nov-21 LOCATION:Site ENGINEER:C Pincock ADT =1,420 RECEIVER DISTANCE = 150 SPEED =45 DIST C/L TO WALL =50 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 50 WALL DISTANCE FROM RECEIVER 100 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =142 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 15 HTH WALL 0.0 MEDIUM TRUCKS =15 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =15 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.105 0.9742 AUTOMOBILES 2.0 147.93 MEDIUM TRUCK 0.022 0.489 0.0184 MEDIUM TRUCKS 4.0 147.91 HEAVY TRUCKS 0.054 0.473 0.0074 HEAVY TRUCKS 8.0 147.93 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 50.5 48.5 47.2 41.2 49.6 50.3 MEDIUM TRUCKS 41.6 37.7 30.2 38.9 45.1 45.1 HEAVY TRUCKS 42.1 38.1 34.7 39.4 45.6 45.6 NOISE LEVELS (dBA)51.6 49.2 47.5 44.7 52.0 52.4 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 50.5 48.5 47.2 41.2 49.6 50.3 MEDIUM TRUCKS 41.6 37.7 30.2 38.9 45.1 45.1 HEAVY TRUCKS 42.1 38.1 34.7 39.4 45.6 45.6 NOISE LEVELS (dBA)51.6 49.2 47.5 44.7 52.0 52.4 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 10 22 47 101 LDN 10 21 44 95 NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.489 - - 0.473 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION www.mdacoustics.com AZ Office 4960 S. Gilbert Rd, Ste 1-461 Chandler, AZ 85249 Project:Crossing at Palm Desert Site Address/Location:S.E. corner Gateway Dr. & Dick Kelly Dr., Palm Desert, CA Site ID:ST1 20-Minute Continuous Noise Measurement Datasheet 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 2:32:09 PM2:32:24 PM2:32:39 PM2:32:54 PM2:33:09 PM2:33:24 PM2:33:39 PM2:33:54 PM2:34:09 PM2:34:24 PM2:34:39 PM2:34:54 PM2:35:09 PM2:35:24 PM2:35:39 PM2:35:54 PM2:36:09 PM2:36:24 PM2:36:39 PM2:36:54 PM2:37:09 PM2:37:24 PM2:37:39 PM2:37:54 PM2:38:09 PM2:38:24 PM2:38:39 PM2:38:54 PM2:39:09 PM2:39:24 PM2:39:39 PM2:39:54 PM2:40:09 PM2:40:24 PM2:40:39 PM2:40:54 PM2:41:09 PM2:41:24 PM2:41:39 PM2:41:54 PM2:42:09 PM2:42:24 PM2:42:39 PM2:42:54 PM2:43:09 PM2:43:24 PM2:43:39 PM2:43:54 PM2:44:09 PM2:44:24 PM2:44:39 PM2:44:54 PM2:45:09 PM2:45:24 PM2:45:39 PM2:45:54 PM2:46:09 PM2:46:24 PM2:46:39 PM2:46:54 PM2:47:09 PM2:47:24 PM2:47:39 PM2:47:54 PM2:48:09 PM2:48:24 PM2:48:39 PM2:48:54 PM2:49:09 PM2:49:24 PM2:49:39 PM2:49:54 PMdBATime ST-1: Ambient Noise Level (1-sec) 20Min_Field Sheet Awtg ST1-3 Crossing at Palm Desert www.mdacoustics.com AZ Office 4960 S. Gilbert Rd, Ste 1-461 Chandler, AZ 85249 Project:Crossing at Palm Desert Site Address/Location:S.E. corner Gateway Dr. & Dick Kelly Dr., Palm Desert, CA Site ID:ST2 20-Minute Continuous Noise Measurement Datasheet 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 3:00:45 PM3:01:00 PM3:01:15 PM3:01:30 PM3:01:45 PM3:02:00 PM3:02:15 PM3:02:30 PM3:02:45 PM3:03:00 PM3:03:15 PM3:03:30 PM3:03:45 PM3:04:00 PM3:04:15 PM3:04:30 PM3:04:45 PM3:05:00 PM3:05:15 PM3:05:30 PM3:05:45 PM3:06:00 PM3:06:15 PM3:06:30 PM3:06:45 PM3:07:00 PM3:07:15 PM3:07:30 PM3:07:45 PM3:08:00 PM3:08:15 PM3:08:30 PM3:08:45 PM3:09:00 PM3:09:15 PM3:09:30 PM3:09:45 PM3:10:00 PM3:10:15 PM3:10:30 PM3:10:45 PM3:11:00 PM3:11:15 PM3:11:30 PM3:11:45 PM3:12:00 PM3:12:15 PM3:12:30 PM3:12:45 PM3:13:00 PM3:13:15 PM3:13:30 PM3:13:45 PM3:14:00 PM3:14:15 PM3:14:30 PM3:14:45 PM3:15:00 PM3:15:15 PM3:15:30 PM3:15:45 PM3:16:00 PM3:16:15 PM3:16:30 PM3:16:45 PM3:17:00 PM3:17:15 PM3:17:30 PM3:17:45 PM3:18:00 PM3:18:15 PM3:18:30 PMdBATime ST-2: Ambient Noise Level (1-sec) 20Min_Field Sheet Awtg ST1-3 Crossing at Palm Desert www.mdacoustics.com AZ Office 4960 S. Gilbert Rd, Ste 1-461 Chandler, AZ 85249 Project:Crossing at Palm Desert Site Address/Location:S.E. corner Gateway Dr. & Dick Kelly Dr., Palm Desert, CA Site ID:ST3 20-Minute Continuous Noise Measurement Datasheet 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 2:55:33 PM2:55:48 PM2:56:03 PM2:56:18 PM2:56:33 PM2:56:48 PM2:57:03 PM2:57:18 PM2:57:33 PM2:57:48 PM2:58:03 PM2:58:18 PM2:58:33 PM2:58:48 PM2:59:03 PM2:59:18 PM2:59:33 PM2:59:48 PM3:00:03 PM3:00:18 PM3:00:33 PM3:00:48 PM3:01:03 PM3:01:18 PM3:01:33 PM3:01:48 PM3:02:03 PM3:02:18 PM3:02:33 PM3:02:48 PM3:03:03 PM3:03:18 PM3:03:33 PM3:03:48 PM3:04:03 PM3:04:18 PM3:04:33 PM3:04:48 PM3:05:03 PM3:05:18 PM3:05:33 PM3:05:48 PM3:06:03 PM3:06:18 PM3:06:33 PM3:06:48 PM3:07:03 PM3:07:18 PM3:07:33 PM3:07:48 PM3:08:03 PM3:08:18 PM3:08:33 PM3:08:48 PM3:09:03 PM3:09:18 PM3:09:33 PM3:09:48 PM3:10:03 PM3:10:18 PM3:10:33 PM3:10:48 PM3:11:03 PM3:11:18 PM3:11:33 PM3:11:48 PM3:12:03 PM3:12:18 PM3:12:33 PM3:12:48 PM3:13:03 PM3:13:18 PMdBATime ST-3: Ambient Noise Level (1-sec) 20Min_Field Sheet Awtg ST1-3 Crossing at Palm Desert   .$/  8  6<<%   FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Gateway Drive DATE:5-Nov-21 LOCATION:50 ft from CL ENGINEER:C Pincock ADT =2,489 RECEIVER DISTANCE = 50 SPEED =45 DIST C/L TO WALL =50 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 50 WALL DISTANCE FROM RECEIVER 0 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =249 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 10 HTH WALL 0.0 MEDIUM TRUCKS =10 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =10 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.105 0.9742 AUTOMOBILES 2.0 43.41 MEDIUM TRUCK 0.022 0.489 0.0184 MEDIUM TRUCKS 4.0 43.31 HEAVY TRUCKS 0.054 0.473 0.0074 HEAVY TRUCKS 8.0 43.41 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 61.9 59.9 58.6 52.6 61.0 61.6 MEDIUM TRUCKS 52.9 49.0 41.6 50.3 56.5 56.5 HEAVY TRUCKS 53.5 49.5 46.1 50.7 56.9 57.0 NOISE LEVELS (dBA)62.9 60.6 58.9 56.1 63.4 63.8 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 61.9 59.9 58.6 52.6 61.0 61.6 MEDIUM TRUCKS 52.9 49.0 41.6 50.3 56.5 56.5 HEAVY TRUCKS 53.5 49.5 46.1 50.7 56.9 57.0 NOISE LEVELS (dBA)62.9 60.6 58.9 56.1 63.4 63.8 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 12 38 120 379 LDN 11 35 109 346 VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.489 - - 0.473 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Gateway Drive plus Project DATE:5-Nov-21 LOCATION:50 ft from CL ENGINEER:C Pincock ADT =3,119 RECEIVER DISTANCE = 50 SPEED =45 DIST C/L TO WALL =50 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 50 WALL DISTANCE FROM RECEIVER 0 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =312 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 10 HTH WALL 0.0 MEDIUM TRUCKS =10 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =10 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.105 0.9742 AUTOMOBILES 2.0 43.41 MEDIUM TRUCK 0.022 0.489 0.0184 MEDIUM TRUCKS 4.0 43.31 HEAVY TRUCKS 0.054 0.473 0.0074 HEAVY TRUCKS 8.0 43.41 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 62.9 60.9 59.6 53.5 62.0 62.6 MEDIUM TRUCKS 53.9 50.0 42.6 51.3 57.5 57.5 HEAVY TRUCKS 54.5 50.4 47.0 51.7 57.9 58.0 NOISE LEVELS (dBA)63.9 61.6 59.9 57.1 64.4 64.8 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 62.9 60.9 59.6 53.5 62.0 62.6 MEDIUM TRUCKS 53.9 50.0 42.6 51.3 57.5 57.5 HEAVY TRUCKS 54.5 50.4 47.0 51.7 57.9 58.0 NOISE LEVELS (dBA)63.9 61.6 59.9 57.1 64.4 64.8 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 15 48 150 475 LDN 14 43 137 434 NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.489 - - 0.473 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Dick Kelly Dr DATE:5-Nov-21 LOCATION:50 ft from CL ENGINEER:C Pincock ADT =994 RECEIVER DISTANCE = 50 SPEED =45 DIST C/L TO WALL =50 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 50 WALL DISTANCE FROM RECEIVER 0 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =99 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 10 HTH WALL 0.0 MEDIUM TRUCKS =10 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =10 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.105 0.9742 AUTOMOBILES 2.0 43.41 MEDIUM TRUCK 0.022 0.489 0.0184 MEDIUM TRUCKS 4.0 43.31 HEAVY TRUCKS 0.054 0.473 0.0074 HEAVY TRUCKS 8.0 43.41 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 57.9 55.9 54.6 48.6 57.0 57.6 MEDIUM TRUCKS 49.0 45.1 37.6 46.3 52.5 52.5 HEAVY TRUCKS 49.5 45.5 42.1 46.7 52.9 53.0 NOISE LEVELS (dBA)59.0 56.6 54.9 52.1 59.4 59.8 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 57.9 55.9 54.6 48.6 57.0 57.6 MEDIUM TRUCKS 49.0 45.1 37.6 46.3 52.5 52.5 HEAVY TRUCKS 49.5 45.5 42.1 46.7 52.9 53.0 NOISE LEVELS (dBA)59.0 56.6 54.9 52.1 59.4 59.8 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 5 15 48 151 LDN 4 14 44 138 NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.489 - - 0.473 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION FHWA-RD-77-108 HIGHWAY NOISE PREDICTION MODEL PROJECT:Crossing at Palm Desert JOB #:07412144 ROADWAY:Dick Kelly Dr Plus Project DATE:5-Nov-21 LOCATION:50 ft from CL ENGINEER:C Pincock ADT =1,624 RECEIVER DISTANCE = 50 SPEED =45 DIST C/L TO WALL =50 PK HR % =10 RECEIVER HEIGHT =5.0 NEAR LANE/FAR LANE DIS 50 WALL DISTANCE FROM RECEIVER 0 ROAD ELEVATION =0.0 PAD ELEVATION =0.0 GRADE =0.0 %ROADWAY VIEW:LF ANGLE=-90 PK HR VOL =162 RT ANGLE=90 DF ANGLE=180 AUTOMOBILES = 10 HTH WALL 0.0 MEDIUM TRUCKS =10 (10 = HARD SITE, 15 = SOFT SITE)AMBIENT=0.0 HEAVY TRUCKS =10 BARRIER =0 (0 = WALL, 1 = BERM) VEHICLE TYPE EVENING NIGHT DAILY VEHICLE TYPE HEIGHT SLE DISTANCE AUTOMOBILES 0.140 0.105 0.9742 AUTOMOBILES 2.0 43.41 MEDIUM TRUCK 0.022 0.489 0.0184 MEDIUM TRUCKS 4.0 43.31 HEAVY TRUCKS 0.054 0.473 0.0074 HEAVY TRUCKS 8.0 43.41 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 60.0 58.0 56.7 50.7 59.1 59.8 MEDIUM TRUCKS 51.1 47.2 39.7 48.4 54.6 54.7 HEAVY TRUCKS 51.6 47.6 44.2 48.9 55.1 55.1 NOISE LEVELS (dBA)61.1 58.7 57.0 54.2 61.5 61.9 VEHICLE TYPE PK HR LEQ DAY LEQ EVEN LEQ NIGHT LEQ LDN CNEL AUTOMOBILES 60.0 58.0 56.7 50.7 59.1 59.8 MEDIUM TRUCKS 51.1 47.2 39.7 48.4 54.6 54.7 HEAVY TRUCKS 51.6 47.6 44.2 48.9 55.1 55.1 NOISE LEVELS (dBA)61.1 58.7 57.0 54.2 61.5 61.9 NOISE LEVELS 70 dBA 65 dBA 60 dBA 55 dBA CNEL 8 25 78 247 LDN 7 23 71 226 NOISE CONTOUR (FT) DAY GRADE ADJUSTMENT 0.755 - - 0.489 - - 0.473 0.00 NOISE OUTPUT DATA NOISE IMPACTS (WITHOUT TOPO OR BARRIER SHIELDING) NOISE IMPACTS (WITH TOPO AND BARRIER SHIELDING) VEHICLE MIX DATA MISC. VEHICLE INFO NOISE INPUT DATA ROADWAY CONDITIONS RECEIVER INPUT DATA SITE CONDITIONS WALL INFORMATION   ./  "'  3""  ABCDE Construction Phase Equipment Item # of Items Item Lmax at 50 feet, dBA Dist. To Recptr. Item Usage Perce SITE PREP 1. Graders 1 85 350 41 2. Scrapers 1 85 350 48 3. Tractors/Loaders/Backhoes 1 80 350 37 GRADE 1. Graders 1 85 350 41 2. Rubber Tired Dozers 1 85 350 40 3. Tractors/Loaders/Backhoes 2 80 350 37 BUILD 1. Cranes 1 85 350 29 2. Forklifts 2 85 350 20 3.Generator Sets 1 82 350 74 4. Tractor/Loaders/Backhoes 1 80 350 37 5. Welders 3 73 350 45 PAVE 1. Cement and Mortar Mixers 1 85 350 56 2. Pavers 1 85 350 42 3. Paving Equipment 1 85 350 36 4. Rollers 2 85 350 38 5. Tractors/Loaders/Backhoes 1 80 350 37 ARCH COAT 1. Air Compressors 1 80 350 48 Receptor - Residences t                          !"#$% "  $ &' (  )*+ & +),* )* & +-( ! ./.01 2!   "  $  # !/  3#./..   ! &' (   2 4 "!$ 3/3. 5      66 6    )*& ,++ )* 2&      *    !  '  !  5  7   8 9  !  (  ! + (  9 ..:9 ( 0;</           Prepared for: Altum Group 44-600 Village Court, Suite 100 Palm Desert CA, 92260 Prepared by: 23905 Clinton Keith Road 114-280 Wildomar, CA 92595 April 2022 Crossings at Palm Desert Transportation Analysis Crossings at Palm Desert TA Executive Summary i EXECUTIVE SUMMARY Purpose of the Report The purpose of this transportation analysis (TA) report is to identify and document potential traffic level of service (LOS) deficiencies and effects on vehicle miles traveled (VMT) related to the proposed Crossings at Palm Desert project in the City of Palm Desert. This technical report was prepared consistent with the County of Riverside Transportation Analysis Guidelines for LOS and VMT (Guidelines, December 2020) and will also recommend transportation improvements to address potential project deficiencies to local and regional transportation facilities. Project Overview The project will be developed on a vacant site located along Dick Kelly Drive between Gateway Drive and Cortesia Way. Access to the project site will be provided via one full access driveway along Gateway Drive and one right in/right out only driveway along Dick Kelly Drive. The subject project is proposing the construction of 11 residential buildings including 176 multi-family (low-rise) units and 1 building that includes a leasing office and other amenity uses. The project trip generation was calculated using the ITE Trip Generation Manual (11th Edition). It is estimated that the project will generate 1,186 total daily trips, 71 AM peak hour trips and 90 PM peak hour trips. Project trip distribution and assignment were developed, in coordination with the City of Palm Desert staff, based on the land use characteristics of the proposed project and surrounding area, existing travel patterns within the study area, anticipated travel patterns to and from the project site, and approved projects located in the vicinity of the project site. Project scenarios and study area were then established in coordination with City staff to determine the potential project deficiencies on the transportation network. Project Scenarios: x Existing Conditions (2021) x Project Completion Year 2023 (Existing Plus Ambient Plus Project) Conditions Study Area Intersections: 1. Dick Kelly Drive and Gateway Drive 2. Dick Kelly Drive and Monterey Avenue 3. Dick Kelly Drive and Dinah Shore Drive Analysis Results and Recommendations Existing Conditions (2021) Scenario All study area intersections operate at acceptable level of service (LOS) under Existing Conditions 2021. Therefore, no improvements are required by this project. Project Completion Scenario All study area intersections operate at acceptable LOS under Project Completion Conditions. Therefore, no improvements are required by this project. Crossings at Palm Desert TA Executive Summary ii Vehicle Miles Traveled Per the Guidelines, Page 19, Figure 3, Screening Criteria for Development Projects, the proposed project can be presumed to not have a significant transportation related CEQA impact by qualifying for the small project screening criterion. Per Appendix G (Page 42) of the Guidelines, the ITE Trip Generation Manual, 10th Edition, trip generation rates were used to determine land use unit-based screening thresholds for small projects. Therefore, for VMT screening purposes, the proposed project consists of 128 multi-family (low-rise) units and 48 multi-family (mid-rise) units can be screened as a multi-family (low-rise) housing project with less than 147 dwelling units; or a multi-family (mid-rise) housing project with less than 194 dwelling units. Crossings at Palm Desert TA Table of Content i Table of Contents EXECUTIVE SUMMARY ............................................................................................................................................... I Purpose of the Report ..................................................................................................................................... i Project Overview ............................................................................................................................................. i Analysis Results and Recommendations ......................................................................................................... i Vehicle Miles Traveled ................................................................................................................................... ii 1.0 PROJECT INTRODUCTION .................................................................................................................................. 1 PROJECT DESCRIPTION ............................................................................................................................................. 1 STUDY AREA .......................................................................................................................................................... 1 PROJECT TRIP GENERATION ....................................................................................................................................... 1 PROJECT TRIP DISTRIBUTION AND ASSIGNMENT............................................................................................................. 2 PROJECT ACCESS ..................................................................................................................................................... 2 PARKING ............................................................................................................................................................... 3 2.0 METHODOLOGIES ........................................................................................................................................... 7 STUDY SCENARIOS ................................................................................................................................................... 7 STUDY TIME PERIODS............................................................................................................................................... 7 ANALYSIS METHODOLOGIES ...................................................................................................................................... 7 Intersection Capacity Analysis ....................................................................................................................... 8 Signalized Intersections .......................................................................................................................................... 9 City of Palm Desert General Plan Compliance ............................................................................................. 10 3.0 EXISTING CONDITIONS (2021) SCENARIO .......................................................................................................... 11 ROADWAY NETWORK ............................................................................................................................................. 11 TRANSIT SYSTEM ................................................................................................................................................... 11 ACTIVE TRANSPORTATION SYSTEM ............................................................................................................................ 1 1 TRAFFIC VOLUMES ................................................................................................................................................ 11 ANALYSIS RESULTS ................................................................................................................................................ 12 4.0 PROJECT COMPLETION CONDITIONS .................................................................................................................. 16 ANALYSIS RESULTS ................................................................................................................................................ 16 5.0 VEHICLE MILES TRAVELED .............................................................................................................................. 18 Senate Bill 743 ............................................................................................................................................. 18 Guidance Documents ................................................................................................................................... 18 Analysis Methodology ................................................................................................................................. 18 Screening Criteria ................................................................................................................................................. 18 VMT Analysis ........................................................................................................................................................ 19 VMT Thresholds .................................................................................................................................................... 20 Project Assessment .............................................................................................................................................. 20 List of Figures FIGURE 1-1 – PROJECT SITE PLAN .................................................................................................................................. 4 FIGURE 1-2 – PROJECT STUDY AREA AND TRIP DISTRIBUTION .............................................................................................. 5 FIGURE 1-3 – PROJECT AM/PM PEAK HOUR INTERSECTION VOLUMES ................................................................................. 6 FIGURE 3-1 – CITY OF PALM DESERT GENERAL PLAN CIRCULATION NETWORK ...................................................................... 13 FIGURE 3-2 – CITY OF PALM DESERT SECONDARY STREET ROADWAY CROSS-SECTIONS .......................................................... 14 FIGURE 3-3 – EXISTING YEAR (2021) AM/PM PEAK HOUR INTERSECTION VOLUMES ........................................................... 15 FIGURE 4-1 – PROJECT COMPLETION CONDITIONS AM/PM PEAK HOUR INTERSECTION VOLUMES .......................................... 17 Crossings at Palm Desert TA Table of Content ii List of Tables TABLE 1-1 PROJECT TRIP GENERATION RATE .................................................................................................................... 2 TABLE 1-2 PROJECT TRIP GENERATION ........................................................................................................................... 2 TABLE 2-1 VEHICULAR LEVEL OF SERVICE DEFINITIONS ....................................................................................................... 8 TABLE 2-2 SIGNALIZED INTERSECTION LEVEL OF SERVICE HCM OPERATIONAL ANALYSIS METHOD ............................................ 10 TABLE 3-1 EXISTING CONDITIONS 2021 SCENARIO INTERSECTION OPERATION ANALYSIS ........................................................ 12 TABLE 4-1 PROJECT COMPLETION SCENARIO INTERSECTION OPERATION ANALYSIS ................................................................ 16 TABLE 5-1 COUNTY GREENHOUSE GAS EMISSIONS SCREENING TABLES ................................................................................ 19 TABLE 5-2 SUMMARY OF VMT IMPACTS ....................................................................................................................... 20 Appendices APPENDIX A - TRAFFIC COUNT DATA APPENDIX B - EXISTING CONDITIONS PEAK HOUR INTERSECTION ANALYSIS WORKSHEETS APPENDIX C - PROJECT COMPLETION CONDITIONS PEAK HOUR INTERSECTION ANALYSIS WORKSHEETS APPENDIX D - TRANSIT ROUTE INFORMATION Crossings at Palm Desert TA Project Introduction 1 1.0 PROJECT INTRODUCTION This transportation analysis (TA) report has been prepared for Crossings at Palm Desert project. The project will be developed on a vacant site located along Dick Kelly Drive between Gateway Drive and Cortesia Way in the City of Palm Desert. PROJECT DESCRIPTION The subject project is proposing the construction of 11 residential buildings including 176 multi-family (low-rise) units and 1 building that includes a leasing office and other amenity uses. Figure 1-1 shows the project site plan. STUDY AREA The study area for this project was developed consistent with the County of Riverside Transportation Analysis Guidelines (Guidelines), including all intersections of “Collector” or higher classification streets with “Collector” or higher classification streets, at which the proposed project will add 50 or more peak hour trips. IEG prepared a project traffic study scoping agreement defining the study area, which was reviewed and approved by City of Palm Desert staff prior to the preparation of this technical report. Figure 1-2 presents the study area that includes the following key intersection locations: 1. Dick Kelly Drive and Gateway Drive 2. Dick Kelly Drive and Monterey Avenue 3. Dick Kelly Drive and Dinah Shore Drive Turning movement counts were conducted for one weekday during the morning and evening peak hours on Wednesday December 15, 2021. The turning movement counts are included in Appendix A. These counts will be utilized in Synchro 10 software to determine LOS at all study intersections. Existing Plus Ambient Growth without Project traffic volumes will be developed by adding a 2% annual growth for two years to the existing counts. PROJECT TRIP GENERATION The trip generation is a measure or forecast of the number of trips that begin or end at the project site. These trips will result in some traffic increases on the streets where they occur. The rates used in this analysis were determined using Trip Generation, 11th Edition, published by the Institute of Transportation Engineers (ITE) that is the method preferred by the City of Palm Desert. Project ITE average trip generation rates are presented in Table 1-1. Crossings at Palm Desert TA Project Introduction 2 Table 1-1 Project Trip Generation Rate Land Use Units1 ITE LU Code AM Peak Hour PM Peak Hour Daily In Out Total In Out Total Multi-family Housing (Low Rise) DU 220 0.10 0.30 0.40 0.32 0.19 0.51 6.74 Source: Institute of Transportation Engineers (ITE), Trip Generation Manual, 11th Edition (2021) 1 DU = Dwelling Unit Tables 1-2 summarizes the calculated trip generation based on the number of dwelling units associated with the proposed Project. As shown on Table 1-2, the proposed development is anticipated to generate approximately 1,186 total daily trips, 71 AM peak hour trips and 90 PM peak hour trips. Table 1-2 Project Trip Generation Land Use Intensity Units1 AM Peak Hour PM Peak Hour Daily In Out Total In Out Total Multi-family Housing (Low Rise) 176 DU 17 54 71 57 33 90 1186 Total 17 54 71 57 33 90 1,186 Source: Institute of Transportation Engineers (ITE), Trip Generation Manual, 11th Edition (2021) 1 DU = Dwelling Unit PROJECT TRIP DISTRIBUTION AND ASSIGNMENT Trip distribution and assignment is the process of identifying the probable destinations, directions and traffic routes that project related traffic will affect. Once the proposed development’s trips have been estimated, they are assigned to the study area network. For this development, the project trip distribution and assignment were developed, in coordination with City staff, based on the land use characteristics of the proposed project and surrounding area, existing travel patterns within the study area, anticipated travel patterns to and from the project site, and approved projects located in the vicinity of the project site. Figures 1-2 and 1-3 show study area/trip distribution; and intersection turning movement volumes, respectively. PROJECT ACCESS Access to the project site will be provided via two driveways on Dick Kelly Drive and Gateway Drive as described below: x Dick Kelly Drive – proposed 48 ft wide right in/right out only driveway with curb returns and 8 ft wide raised median. This driveway will provide one entering and one existing lane. The exiting lane will provide approximately 750 ft intersection sight distance (ISD) viewing left (west), complying with the minimum required AASHTO ISD of 430 ft along a roadway with 45 mph speed limit. x Gateway Drive – proposed 32 ft wide driveway with curb returns. This driveway will provide one entering lane and one existing lane. The exiting lane will provide approximately 500 ft ISD viewing left (south) and 800 ft ISD viewing right (north), complying with the minimum required Crossings at Palm Desert TA Project Introduction 3 AASHTO ISD of 480 ft viewing right and 555 ft viewing left along a roadway with 50 mph speed limit. PARKING The proposed development will be required to provide on-site parking spaces consistent with City of Palm Desert parking requirements. ϰ CrossingƐ at WƌŽũĞĐƚ^ƚƵĚLJ Figure ϭͲ2 #/ŶƐƚĞƌƐĞĐƟŽŶLEGEND PROJECT SITE 20%20% 15%15% 35%35%5%5% 25%25% 20%20% 5%5%35%35% 15%15% 20%20 40%40% 60%60% 12 ϱ ƌŽƐƐŝŶŐƐĂƚWĂůŵĞƐĞƌƚ WƌŽũĞĐƚWĞĂŬ,ŽƵƌ/ŶƚĞƌƐĞĐƚŝŽŶsŽůƵŵĞƐ Figure ϭͲ3 (AM/PM) Peak Hour Volumes LEGEND ϲ Crossings at Palm Desert TA Methodologies 7 2.0 METHODOLOGIES This section documents the methodologies and assumptions used to conduct the transportation analysis for the proposed project, consistent with the Guidelines, Page 11. This section contains the following background information: x Study scenarios x Study time periods x Analysis methodologies STUDY SCENARIOS This report presents an operation analysis of the intersections which were selected for the following scenarios recommended by the Guidelines: x Existing Conditions (2021) x Project Completion Year 2023 (Existing Plus Ambient Plus Project) Conditions STUDY TIME PERIODS The Guidelines recommend the following timeframes for peak hour analysis: x Weekday AM (peak hour between 7:00 AM and 9:00 AM) x Weekday PM (peak hour between 4:00 PM and 6:00 PM) ANALYSIS METHODOLOGIES Street system operating conditions are typically described in terms of “level of service.” Level of service is a report-card scale used to indicate the quality of traffic flow on roadway segments and at intersections. Level of service (LOS) ranges from LOS A (free flow, little congestion) to LOS F (forced flow, extreme congestion). Table 2-1 describes generalized definitions of auto LOS A through F. Crossings at Palm Desert TA Methodologies 8 Table 2-1 Vehicular Level of Service Definitions LOS Characteristics A Primarily free-flow operation. Vehicles are completely unimpeded in their ability to maneuver within the traffic stream. Controlled delay at the boundary intersections is minimal. The travel speed exceeds 8 0% of the base free-flow speed, and the volume-to-capacity ratio is no greater than 1.0. B Reasonably unimpeded operation. The ability to maneuver within the traffic stream is only slightly restricted and control delay at the boundary intersections is not significant. The travel speed is between 67% and 80% of the base free-flow speed, and the volume-to-capacity ratio is no greater than 1.0. C Stable operation. The ability to maneuver and change lanes at mid-segment locations may be more restricted than at LOS B. Longer queues at the boundary intersections may contribute to lower travel speeds. The travel speed is between 50% and 67% of the base free-flow speed, and the volume-to-capacity ratio is no greater than 1.0. D Less stable condition in which small increases in flow may cause substantial increases in delay and decreases in travel speed. This operation may be due to adverse signal progression, high volume, or inappropriate signal timing at the boundary intersections. The travel speed is between 40% and 50% of the base free -flow speed, and the volume-to-capacity ratio is no greater than 1.0. E Unstable operation and significant delay. Such operations may be due to some combination of adverse signal progression, high volume, and inappropriate signal timing at the boundary intersections. The travel speed is between 30% and 40% of the base free-flow speed, and the volume-to-capacity ratio is no greater than 1.0. F Flow at extremely low speed. Congestion is likely occurring at the boundary intersections, as indicated by high delay and extensive queuing. The travel speed is 30% or less of the base free-flow speed, or the volume-to- capacity ratio is greater than 1.0. Source: Highway Capacity Manual 6th Edition, Transportation Research Board (2016) Intersection Capacity Analysis The analysis of peak hour intersection performance was conducted using the Synchro 10 software program, which uses methodologies defined in the Highway Capacity Manual (HCM) 6th Edition to calculate LOS. Level of service (LOS) for intersections is determined by control delay. Control delay is defined as the total elapsed time from when a vehicle stops at the end of a queue to the time the vehicle departs from the stop line. The total elapsed time includes the time required for the vehicle to travel from the last-in-queue position to the first-in-queue position, including deceleration of vehicles from free-flow speed to the speed of vehicles in the queue. HCM6 signalized intersection analysis within Synchro 10 software package requires standard NEMA phasing. For signalized intersections without standard NEMA phasing the following manual adjustments were included to allow for HCM6 analysis: x Dick Kelly Drive/Monterey Avenue – Included western intersection leg to receive dummy westbound through movement to allow phasing for existing westbound left and right turn movements. This adjustment included 0 volume for the dummy eastbound movement and its phase time overlapped with the westbound phase (i.e. no dummy time added to the realistic cycle length) x Dick Kelly Drive/Dinah Shore Drive – Included eastern intersection leg to receive dummy eastbound through movement to allow phasing for existing eastbound left and right turn movements. This adjustment included 0 volume for the dummy westbound movement and Crossings at Palm Desert TA Methodologies 9 its phase time overlapped with the eastbound phase (i.e. no dummy time added to the realistic cycle length) Signalized Intersections The HCM analysis methodology for evaluating signalized intersections is based on the “operational analysis” procedure. This technique uses 1,900 passenger cars per hour of green per lane (pcphpl) as the maximum saturation flow of a single lane at an intersection. Average control delay is calculated by taking a volume-weighted average of all the delays for all vehicles entering the intersection. Table 2-2 summarizes the level of service criteria for signalized intersections. Crossings at Palm Desert TA Methodologies 10 Table 2-2 Signalized Intersection Level of Service HCM Operational Analysis Method Source: Highway Capacity Manual 6th Edition, Transportation Research Board (2016) City of Palm Desert General Plan Compliance In coordination with City staff, the transportation analysis will identify LOS deficiencies for compliance with City of Palm Desert General Plan goals. The City of Palm Desert has established LOS “D” as the minimum allowable level of service at signalized intersections. Therefore, any intersection operating at LOS E or worse will be considered deficient for the purposes of this analysis. Average Control Delay Per Vehicle (seconds) Level of Service (LOS) Characteristics <10.0 LOS A occurs when the volume-to-capacity ratio is low and either progression is exceptionally favorable or the cycle length is very short. If it is due to favorable progression, most vehicles arrive during the green indication and travel through the intersection without stopping. 10.1 – 20.0 LOS B occurs when the volume-to-capacity ratio is low and either progression is highly favorable or the cycle length is short. More vehicles stop than with LOS A. 20.1 – 35.0 LOS C occurs when progression is favorable or the cycle length is moderate. Individual cycle failures (i.e., one or more queued vehicles are not able to depart as a result of insufficient capacity during the cycle) may begin to appear at this level. The number of vehicles stopping is significant, although many vehicles still pass through the intersection without stopping. 35.1 – 55.0 LOS D occurs when the volume-to-capacity ratio is high and either progression is ineffective or the cycle length is long. Many vehicles stop and individual cycle failures are noticeable. 55.1 – 80.0 LOS E occurs when the volume-to-capacity ratio is high, progression is unfavorable, and the cycle length is long. Individual cycle failures are frequent. >80.0 LOS F occurs when the volume-to-capacity ratio is very high, progression is very poor, and the cycle length is long. Most cycles fail to clear the queue. Crossings at Palm Desert TA Existing Conditions (2021) 11 3.0 EXISTING CONDITIONS (2021) SCENARIO This section documents the circulation system conditions within the study area of the project under Existing Conditions Year 2021. This section also documents operational deficiencies on the existing local and regional circulation networks. ROADWAY NETWORK Locally significant roadway located within the study area of the proposed project is discussed below. Dick Kelly Drive from Monterey Avenue to Dinah Shore Drive functions as a 4-lane undivided roadway. The posted speed limit on Dick Kelly Drive is 45 miles per hour (mph). Per the City of Palm Desert General Plan Mobility Element, the buildout roadway classification of Dick Kelly Drive is a divided 4- lane Secondary Street. Gateway Drive south of Dick Kelly Drive functions as a 4-lane undivided roadway. The posted speed limit on Gateway Drive is 50 mph. Per the City of Palm Desert General Plan Circulation Element, the buildout roadway classification of Gateway Drive is a divided 4-lane Secondary Street. Figures 3-1 and 3-2 show the City of Palm Desert General Plan Circulation Network and Recommended Secondary Street Cross Sections, respectively. TRANSIT SYSTEM The SunLine Transit Agency (STA) is the main transit agency servicing the City of Palm Desert. Currently, STA operates Route 4 within the vicinity of the project. Route 4 operates seven days a week and connects south to The Shops at Palm Desert and northeast to Downtown Palm Springs. Weekday and weekend service frequency is 60 minutes. Bus stops for Route 4 are currently located approximately 0.9 mi away at the northwest corner of the intersection of Monterey Avenue and Dinah Shore Drive for eastbound service and at the southwest corner for southbound service. Pedestrian accessibility and connectivity from the project site to these bus stops is provided along both sides of Dick Kelly Drive, the east side of Monterey Avenue and both sides of Dinah Shore Drive with signalized crossings at the intersection where the bus stops are located. Bus route information is included in Appendix D. ACTIVE TRANSPORTATION SYSTEM Active transportation facilities including pedestrian and bicycle facilities are provided within the study area of the project. Pedestrian crosswalks are generally provided at signalized intersections along Dick Kelly Drive with non-contiguous sidewalks on both sides. Class II bike lanes are provided in both directions along Dick Kelly Drive, Gateway Drive and Cortesia Way. TRAFFIC VOLUMES The Existing Year 2021 peak hour intersection turning movement volumes were counted on Wednesday December 15, 2021. The turning movement counts are provided in Appendix A. Crossings at Palm Desert TA Existing Conditions (2021) 12 ANALYSIS RESULTS Table 3-1 shows Existing Conditions intersection operation analysis results. Figure 3-3 shows intersection turning movement counts under Existing Year 2021 scenario. Table 3-1 Existing Conditions 2021 Scenario Intersection Operation Analysis Intersection Intersection Control Existing Conditions Delay (a) LOS (b) AM/PM Peak 1. Dick Kelly Drive and Gateway Drive Signalized 10.2/11.0 B/B 2. Dick Kelly Drive and Monterey Avenue*Signalized 5.1/7.1 A/A 3. Dick Kelly Drive and Dinah Shore Drive*Signalized 3.8/5.2 A/A Notes: (a)Delay refers to the average control delay for the entire intersection, measured in seconds/vehicle. (b) LOS calculations are based on the methodology outlined in the Highway Capacity Manual 6th Edition and performed using Synchro 10. *See Ch 2.0 Methodologies for manual adjustments to these intersections. Per the analysis results shown in Table 3-1, all analyzed intersections are operating at an acceptable LOS under Existing Year 2021 Conditions. Therefore, no improvements are required. Existing Conditions peak hour analysis worksheets are provided in Appendix B. ƌŽƐƐŝŶŐƐĂƚWĂůŵĞƐĞƌƚ ŝƚLJŽĨWĂůŵĞƐĞƌƚ'ĞŶĞƌĂůWůĂŶ WƌŽƉŽƐĞĚŝƌĐƵůĂƚŝŽŶEĞƚǁŽƌŬ &ŝŐƵƌĞϯͲϭ ϭϯ ƌŽƐƐŝŶŐƐĂƚWĂůŵĞƐĞƌƚ ŝƚLJŽĨWĂůŵĞƐĞƌƚ ^ĞĐŽŶĚĂƌLJ^ƚƌĞĞƚƌŽƐƐͲ^Ğ &ŝŐƵƌĞϯͲϮ ϭϰ ƌŽƐƐŝŶŐƐĂƚWĂůŵĞƐĞƌƚ džŝƐƚŝŶŐϮϬϮϭWĞĂŬ,ŽƵƌ/ŶƚĞƌƐĞĐƚŝŽŶsŽůƵŵĞƐ &ŝŐƵƌĞϯͲϯ (AM/PM) Peak Hour Volumes LEGEND ϭϱ Crossings at Palm Desert TA Project Completion 16 4.0 PROJECT COMPLETION CONDITIONS This section documents the circulation system conditions within the study area of the project under Project Completion (Existing Plus Ambient Plus Project) Conditions. Since the project is expected to be built and operational in 2023, a 2% annual compound growth factor for two years, or 4% (1.02^2=1.04), was applied to the existing counts, as recommended by the Guidelines. Project traffic volumes are then added to these volumes to develop Project Completion Conditions traffic volumes. This section also documents potential operational deficiencies on the existing local and regional circulation networks. ANALYSIS RESULTS Table 4-1 shows Project Completion Conditions intersection operation analysis results. Figures 4-1 shows intersection turning movement volumes under Project Completion Conditions. Table 4-1 Project Completion Scenario Intersection Operation Analysis Intersection Existing Conditions Project Completion Conditions Delay (a) LOS (b) Delay (a) LOS (b) AM Peak/PM Peak 1. Dick Kelly Drive and Gateway Drive 10.2/11.0 B/B 10.7/12.1 B/B 2. Dick Kelly Drive and Monterey Avenue*5.1/7.1 A/A 5.4/7.5 A/A 3. Dick Kelly Drive and Dinah Shore Drive*3.8/5.2 A/A 4.4/5.7 A/A Notes: (a)Delay refers to the average control delay for the entire intersection, measured in seconds/vehicle. At unsignalized intersections, delay refers to the worst movement. (b) LOS calculations are based on the methodology outlined in the Highway Capacity Manual 6th Edition and performed using Synchro 10. *See Ch 2.0 Methodologies for manual adjustments to these intersections. Per the analysis results shown in Table 4-1, all analyzed intersections are operating at an acceptable LOS under Project Completion Conditions. Therefore, no additional improvements are required. Project Completion Conditions peak hour analysis worksheets are provided in Appendix C. ƌŽƐƐŝŶŐƐĂƚWĂůŵĞƐĞƌƚ WƌŽũĞĐƚ ŽŵƉůĞƚŝŽŶWĞĂŬ,ŽƵƌ/ŶƚĞƌƐĞĐƚŝŽŶsŽůƵŵĞƐ &ŝŐƵƌĞϰͲϭ (AM/PM) Peak Hour Volumes LEGEND ϭϳ 5.0 VEHICLE MILES TRAVELED Senate Bill 743 On September 27, 2013, SB 743 was signed into State law and started a process intended to fundamentally change transportation impact analysis as part of the CEQA compliance. The California Natural Resource Agency updated the CEQA transportation analysis guidelines in 2018. In this update automobile delay and LOS metrics are no longer to be used in determining transportation impacts. Instead VMT metrics will serve as the basis in determining impacts. Furthermore, the guidelines stated that after July 1, 2020, transportation analysis under CEQA must use VMT to determine impacts for land use projects. Guidance Documents The project is within the jurisdiction of the City of Palm Desert within the County of Riverside. The County has adopted guidance on evaluating VMT for transportation impacts under CEQA. The City currently does not have guidance on evaluating VMT for transportation impacts under CEQA; Therefore, County of Riverside guidance will be used as the basis to evaluate potential transportation VMT impacts for this project. The County of Riverside, “Transportation Analysis Guidelines for Level of Service, Vehicle Miles Traveled”, December 20201, will be used; hereafter referred to as Guidelines. Analysis Methodology The Guidelines adopted by Riverside County require a 5-step process2 for VMT analysis: x Project Screening: Identifies if the project needs additional VMT analysis based on if the project meets screening criteria set by Riverside County. Projects that meet any criteria would have a presumption of less than significance. x Identify VMT Measure: If the project does not meet any screening criteria, the project will need to identify the appropriate VMT metric as identified in the Guidelines based on land use type. x Identify VMT Threshold: Based on the required VMT Measure the project will need to identify the appropriate VMT Measure threshold as required in the Guidelines. x Assessment of Impact: Project will need to evaluate its project specific VMT Measure against the appropriate VMT Threshold to determine if the project would have an CEQA transportation VMT impact. x Mitigation Measures: If the project would have a VMT impact under CEQA the project would need to mitigate the impact to the extent feasible and disclose whether the project would fully mitigate its impact or require additional analysis. Screening Criteria County of Riverside Transportation Analysis Guidelines Screening Criteria The Guidelines recognize that certain projects based on type, location, size and other contexts could lead to a presumption of less than significance (i.e. the project’s VMT would not cause a transportation impact) and would not need additional VMT analysis. The Guidelines provide the following screening criteria3: 1 https://rctlma.org/Portals/7/2020-12-15%20-%20Transportation%20Analysis%20Guidelines.pdf 2 Guidelines, Figure 2 VMT Analysis Flow Chart 3 Guidelines, Figure 3 Screening Criteria for Development Projects Crossings at Palm Desert TA Project Completion 19 1. Small Projects: This applies to projects with low trip generation per existing CEQA exemptions or based on the County Greenhouse Gas Emissions Screening Tables, result in a 3,000 Metric Tons of Carbon Dioxide Equivalent (MTCO2e) per year screening level threshold.” 2. Table 5-1 County Greenhouse Gas Emissions Screening Tables Land Use DU or TSF1 Total MTCO2e MTCO2e per DU or TSF Single Family 110 2,997 27.25 Multi-Family (low-rise) 147 2,989 20.34 Multi-Family (mid-rise) 194 2,997 15.45 General Office Building 165 2,989 18.11 Retail 60 2,983 49.72 Warehouse (Unrefrigerated) 208 2,995 14.40 General Light Industrial 179 2,997 16.74 1DU = dwelling unit, TSF = Thousand Square Feet Source: TRANSPORTATION ANALYSIS GUIDELINES for Level of Service Vehicle Miles Traveled; Appendix G Unit-Based Screening Thresholds for Small Projects 3. Projects Near High Quality Transit: High quality transit provides a viable option for many to replace automobile trips with transit trips resulting in an overall reduction in VMT. 4. Local Retail: The introduction of new Local-serving retail has been determined to reduce VMT by shortening trips that will occur. 5. Affordable Housing: Lower-income residents make fewer trips on average, resulting in lower VMT overall. 6. Local Essential Service: As with Local-Serving Retail, the introduction of new Local Essential services shortens non-discretionary trips by putting those goods and services closer to residents. 7. Map-Based Screening: This method eliminates the need for complex analyses by allowing existing VMT data to serve as a basis for the screening smaller developments. Note that screening is limited to residential and office projects. 8. Redevelopment Projects: Projects with lower VMT than existing on-site uses, can under limited circumstances, be presumed to have a non-significant impact. In the event this screening does not apply, projects should be analyzed as though there is no existing uses on site (project analysis cannot take credit for existing VMT). VMT Analysis Projects that do not meet any of the screening criteria identified would need to perform a VMT analysis per the Guidelines. The project would need to evaluate the appropriate VMT metrics and compare them to thresholds to determine significance as defined by the Guidelines4. VMT Measures The Guidelines assign the appropriate VMT Measure for land use projects based on land use type. Residential and Office uses are required to use the relevant VMT efficiency metric, VMT per Capita or Work VMT per Employee respectively. Retail and similar uses are required to use a total VMT metric to measure the net change in VMT a project would create due to the “customer component” of the project. 4 Guidelines, Figure 4 Threshold Basisskjf Crossings at Palm Desert TA Project Completion 20 VMT Thresholds Once a project identifies the appropriate VMT measures for the proposed land uses it would need to be compared to thresholds for those metrics to determine significance under CEQA. The County has chosen to base its thresholds on the county and county-wide averages. The thresholds5 as defined by the Guidelines provides are as follows: x Residential Projects: exceeding 15.2 VMT/Capita, based on the county-wide average. x Office and Other Employment Projects: exceeding 14.2 Work VMT/Employee, based on the county-wide average. x Retail and Other Customer Projects: An increase in total region wide (county) VMT. Project Assessment Screening Criteria Assessment Per Appendix G (Page 42) of the Guidelines, the ITE Trip Generation Manual, 10th Edition, trip generation rates were used to determine land use unit-based screening thresholds for small projects. Therefore, for VMT screening purposes, the proposed project consists of 128 multi-family (low-rise) units and 48 multi- family (mid-rise) units. Screening Criteria Small Projects Based on the Guidelines, the proposed project consisting of 128 multi-family (low-rise) units and 48 multi- family (mid-rise) units can be presumed to not have a significant transportation related CEQA impact by qualifying for the small project screening criterion as a multi-family (low-rise) housing projects less than or equal to 147 dwelling units; or multi-family (mid-rise) housing projects less than or equal to 194 dwelling units. VMT Analysis Per the analysis above, the proposed project is screened out for meeting the small project criteria; therefore, the project as proposed would be presumed to be less than significant for VMT impacts. The project’s VMT impact assessment for the proposed uses is summarized in Table 1: Table 5-2 Summary of VMT Impacts Land Use Type Proposed Uses Impact Commentary Residential Low-rise and mid- rise Residential Developm ent Presumed to be less than significant Meets County’s Screening Criteria for Small Projects. 5 Guidelines, Figure 6 VMT Threshold of Significance APPENDIXͲ TRAFFICCOUNTDATA T218 DATE:LOCATION: PROJECT #:SC3214 Wed, Dec 15, 21 NORTH & SOUTH: LOCATION #:1 EAST & WEST: CONTROL:SIGNAL NOTES:AM Ÿ PM N MD Ż W E Ź OTHER S OTHER ź NORTHBOUND SOUTHBOUND EASTBOUND WESTBOUND NL NT NR SL ST SR EL ET ER WL WT WR TOTAL NB SB EB WB TTL LANES:120 1 2012012 0 0000 7:00 AM 291 0 1143106 1 29 00000 7:15 AM 3110 0 6141602 1 35 00000 7:30 AM 2140 0 8116423 3 44 00000 7:45 AM 1111 2 6155404 3 43 00000 8:00 AM 6210 3 8133203 2 52 00000 8:15 AM 2191 1 10146105 0 50 00000 8:30 AM 2170 0 1102650101 54 00000 8:45 AM 4110 0 8039517 1 49 00000 VOLUMES 22 113 3 6 58 6 26 39 28 3 40 12 356 0 0 0 0 0 APPROACH % 16% 82% 2% 9% 83% 9% 28% 42% 30% 5% 73% 22% APP/DEPART 138 /151 70 /89 93 /48 55 /68 0 BEGIN PEAK HR VOLUMES 14 68 1 4 37 2 12 24 13 1 25 4 205 APPROACH % 17% 82% 1% 9% 86% 5% 24% 49% 27% 3% 83% 13% PEAK HR FACTOR 0.769 0.896 0.721 0.682 0.949 APP/DEPART 83 /84 43 /51 49 /29 30 /41 0 4:00 PM 5120 3 1921751123 70 01001 4:15 PM 11 21 1 7 18 5 3 12 10 0 12 2 102 00000 4:30 PM 8150 5 256 118151 6 3 103 00000 4:45 PM 480 2 22327605 2 61 00000 5:00 PM 7180 3 147 016100 9 1 85 00000 5:15 PM 7150 1 272 31310012 0 90 00202 5:30 PM 9120 1 131 112100 4 1 64 00000 5:45 PM 2201 2 181 312180 6 1 84 00000 VOLUMES 53 121 2 24 156 27 14 97 84 2 66 13 659 0 1 2 0 3 APPROACH % 30% 69% 1% 12% 75% 13% 7% 50% 43% 2% 81% 16% APP/DEPART 176 /147 207 /242 195 /122 81 /148 0 BEGIN PEAK HR VOLUMES 30 62 1 17 79 21 6 53 41 1 32 8 351 APPROACH % 32% 67% 1% 15% 68% 18% 6% 53% 41% 2% 78% 20% PEAK HR FACTOR 0.705 0.813 0.735 0.732 0.852 APP/DEPART 93 /76 117 /121 100 /71 41 /83 0 Gateway NORTH SIDE Dick Kelly WEST SIDE EAST SIDE Dick Kelly SOUTH SIDE Gateway N SIDE S SIDE E SIDE W SIDE TOTAL N SIDE S SIDE E SIDE W SIDE TOTAL NS SS ES WS TOTAL 7:00 AM 0 0 0 0 0 0000 0 00000 7:15 AM 0 2 0 0 2 0100 1 01001 7:30 AM 0 0 0 0 0 0000 0 00000 7:45 AM 0 0 0 0 0 0000 0 00000 8:00 AM 0 0 0 0 0 0000 0 00000 8:15 AM 0 0 0 0 0 0000 0 00000 8:30 AM 0 1 0 0 1 0000 0 01001 8:45 AM 0 0 0 0 0 0000 0 00000 TOTAL 03 0 03 0100 1 02002 AM BEGIN PEAK HR 0000 0 4:00 PM 0 0 0 1 1 0000 0 00011 4:15 PM 0 0 0 1 1 0001 1 00000 4:30 PM 0 0 1 0 1 0010 1 00000 4:45 PM 0 0 1 0 1 0010 1 00000 5:00 PM 0 0 0 0 0 0000 0 00000 5:15 PM 0 0 0 0 0 0000 0 00000 5:30 PM 0 0 0 0 0 0000 0 00000 5:45 PM 0 0 0 0 0 0000 0 00000 TOTAL 00 2 24 0021 3 00011 0021 3AMPMAM8:00 AM PM4:15 PM PEDESTRIAN + BIKE CROSSINGS 8:00 AM PM BEGIN PEAK HR 4:15 PM BICYCLE CROSSINGSPEDESTRIAN CROSSINGS U-TURNS Gateway Gateway Dick Kelly Dick Kelly INTERSECTION TURNING MOVEMENT COUNTS PREPARED BY: AimTD LLC. tel: 714 253 7888 cs@aimtd.com Palm Desert Gateway Dick Kelly Add U-Turns to Left Turns 277 33 214 30 TOTAL 298 207 27 156 24 PM 147 70 6586AM 151 55 81 136 216 148 68 12 13 25 40 66 106 TOTALPMAM3 2 5 40 14 26 AMPMTOTAL136 97 39 112 84 28 48 122 170 288 195 93 89 AM 22 113 3 138 242 PM 53 121 2 176 331 TOTAL 75 234 5 314 160 23 116 21 TOTAL 160 117 21 79 17 PM 76 43 2374AM 84 30 41 71 124 83 41 4 8 12 25 32 57 TOTALPMAMAM 8:00 AM 8:45 AM 1 1 2 18 6 12 #N/A AMPMTOTAL77 53 24 PM 4:15 PM 5:45 PM 54 41 13 29 71 100 149 100 49 51 AM 14 68 1 83 121 PM 30 62 1 93 172 Total 44 130 2 176 Gateway Gateway Gateway Dick KellyDick KellyPEAK HOUR AimTD LLC TURNING MOVEMENT COUNTS Gateway Dick KellyDick KellySC3214 ALL HOURS Palm Desert T218 DATE:LOCATION: PROJECT #:SC3214 Wed, Dec 8, 21 NORTH & SOUTH: LOCATION #:2 EAST & WEST: CONTROL:SIGNAL NOTES:AM Ÿ PM N MD Ż W E Ź OTHER S OTHER ź NORTHBOUND SOUTHBOUND EASTBOUND WESTBOUND NL NT NR SL ST SR EL ET ER WL WT WR TOTAL NB SB EB WB TTL LANES:X31 1 3XXXX1.5X0.5 0000 7:00 AM 0114432140000120 5 352 00000 7:15 AM 0132702560000150 1 411 10001 7:30 AM 0125823310000150 1 482 00000 7:45 AM 0154923710000170 2 555 30003 8:00 AM 01491342760000200 4 466 10001 8:15 AM 01641832450000220 5 457 00000 8:30 AM 01771822560000220 8 483 02013 8:45 AM 015826112370000260 3 461 00000 VOLUMES 01,173103272,18600001490293,67552018 APPROACH % 0% 92% 8% 1% 99% 0% 0% 0% 0% 83% 0% 16% APP/DEPART 1,281 /1,204 2,215 /2,340 0 /131 179 /00 BEGIN PEAK HR VOLUMES 064458111,1480000810191,968 APPROACH % 0% 91% 8% 1% 99% 0% 0% 0% 0% 80% 0% 19% PEAK HR FACTOR 0.905 0.778 0.000 0.815 0.882 APP/DEPART 706 /665 1,161 /1,233 0 /70 101 /00 4:00 PM 0356488258000044021735 00000 4:15 PM 0332415277000039013707 24006 4:30 PM 03433512244000047018699 00000 4:45 PM 0292398260000064016679 00000 5:00 PM 0355246239000044010678 20002 5:15 PM 03413511229000048016680 00000 5:30 PM 02992622240000410 7 599 01001 5:45 PM 0245303203000037010528 00000 VOLUMES 02,563278551,934000036401115,31445009 APPROACH % 0% 90% 10% 3% 97% 0% 0% 0% 0% 77% 0% 23% APP/DEPART 2,845 /2,679 1,994 /2,302 0 /333 475 /00 BEGIN PEAK HR VOLUMES 01,323163331,03900001940682,826 APPROACH % 0% 89% 11% 3% 97% 0% 0% 0% 0% 74% 0% 26% PEAK HR FACTOR 0.921 0.941 0.000 0.819 0.961 APP/DEPART 1,488 /1,395 1,076 /1,235 0 /196 262 /00 Monterey NORTH SIDE Dick Kelly WEST SIDE EAST SIDE Dick Kelly SOUTH SIDE Monterey N SIDE S SIDE E SIDE W SIDE TOTAL N SIDE S SIDE E SIDE W SIDE TOTAL NS SS ES WS TOTAL 7:00 AM 0 0 1 0 1 0000 0 00101 7:15 AM 0 0 0 0 0 0000 0 00000 7:30 AM 0 0 0 0 0 0000 0 00000 7:45 AM 0 0 0 0 0 0000 0 00000 8:00 AM 0 0 1 2 3 0000 0 00123 8:15 AM 0 0 2 0 2 0020 2 00000 8:30 AM 0 0 0 0 0 0000 0 00000 8:45 AM 0 0 3 0 3 0020 2 00101 TOTAL 00729 0040 4 00325 AM BEGIN PEAK HR 0020 2 4:00 PM 0 0 0 0 0 0000 0 00000 4:15 PM 0 0 1 0 1 0010 1 00000 4:30 PM 0 0 0 0 0 0000 0 00000 4:45 PM 0 0 0 0 0 0000 0 00000 5:00 PM 0 0 0 0 0 0000 0 00000 5:15 PM 0 0 0 0 0 0000 0 00000 5:30 PM 0 0 0 0 0 0000 0 00000 5:45 PM 0 0 0 0 0 0000 0 00000 TOTAL 00101 0010 1 00000 0010 1 INTERSECTION TURNING MOVEMENT COUNTS PREPARED BY: AimTD LLC. tel: 714 253 7888 cs@aimtd.com Palm Desert Monterey Dick Kelly PM BEGIN PEAK HR 4:00 PM BICYCLE CROSSINGSPEDESTRIAN CROSSINGS U-TURNS Monterey Monterey Dick Kelly Dick Kelly AMPMAM7:45 AM PM4:00 PM PEDESTRIAN + BIKE CROSSINGS 7:45 AM Add U-Turns to Left Turns T218 DATE:LOCATION: PROJECT #:SC3214 Wed, Dec 15, 21 NORTH & SOUTH: LOCATION #:3 EAST & WEST: CONTROL:SIGNAL NOTES:AM Ÿ PM N MD Ż W E Ź OTHER S OTHER ź NORTHBOUND SOUTHBOUND EASTBOUND WESTBOUND NL NT NR SL ST SR EL ET ER WL WT WR TOTAL NB SB EB WB TTL LANES:12XX201X2XX X 0000 7:00 AM 5770054410200 0 143 00000 7:15 AM 11030064110200 0 172 00000 7:30 AM 5870070020500 0 169 00000 7:45 AM 71210067010500 0 201 00000 8:00 AM 61280067200500 0 208 01001 8:15 AM 2950061430400 0 169 00000 8:30 AM 7980056320400 0 170 00000 8:45 AM 5890061140500 0 165 00000 VOLUMES 38 798 0 0 500 15 14 0 32 0 0 0 1,398 0 1 0 0 1 APPROACH % 5% 95% 0% 0% 97% 3% 30% 0% 70% 0% 0% 0% APP/DEPART 836 /813 516 /532 46 /00 /53 0 BEGIN PEAK HR VOLUMES 19 439 0 0 268 3 4 0 17 0 0 0 751 APPROACH % 4% 96% 0% 0% 99% 1% 19% 0% 81% 0% 0% 0% PEAK HR FACTOR 0.854 0.971 0.750 0.000 0.898 APP/DEPART 458 /444 272 /285 21 /00 /22 0 4:00 PM 1311700120430500 0 262 00000 4:15 PM 13 121 0 0 97 4 7 0 14 0 0 0 256 00000 4:30 PM 6 110 0 0 121 3 1 0 18 0 0 0 259 10001 4:45 PM 41160093110900 0 224 00000 5:00 PM 10 84 0 0 102 2 0 0 17 0 0 0 215 00000 5:15 PM 11 98 0 0 106 1 2 0 11 0 0 0 229 10001 5:30 PM 3 91 0 0 102 0 0 0 11 0 0 0 207 10001 5:45 PM 5770 0582 1 0120 0 0 155 00000 VOLUMES 65 814 0 0 799 17 15 0 97 0 0 0 1,810 3 0 0 0 3 APPROACH % 7% 92% 0% 0% 98% 2% 13% 0% 87% 0% 0% 0% APP/DEPART 882 /829 816 /899 112 /00 /82 0 BEGIN PEAK HR VOLUMES 36 464 0 0 431 12 12 0 46 0 0 0 1,002 APPROACH % 7% 93% 0% 0% 97% 3% 21% 0% 79% 0% 0% 0% PEAK HR FACTOR 0.935 0.893 0.690 0.000 0.956 APP/DEPART 501 /476 443 /478 58 /00 /48 0 Dinah Shore NORTH SIDE Dick Kelly WEST SIDE EAST SIDE Dick Kelly SOUTH SIDE Dinah Shore N SIDE S SIDE E SIDE W SIDE TOTAL N SIDE S SIDE E SIDE W SIDE TOTAL NS SS ES WS TOTAL 7:00 AM 0 0 0 0 0 0000 0 00000 7:15 AM 0 0 0 0 0 0000 0 00000 7:30 AM 0 0 0 0 0 0000 0 00000 7:45 AM 0 0 0 0 0 0000 0 00000 8:00 AM 0 0 0 1 1 0000 0 00011 8:15 AM 0 0 0 0 0 0000 0 00000 8:30 AM 0 0 0 2 2 0002 2 00000 8:45 AM 0 0 0 0 0 0000 0 00000 TOTAL 00033 0002 2 00011 AM BEGIN PEAK HR 0000 0 4:00 PM 0 0 1 0 1 0010 1 00000 4:15 PM 0 0 0 0 0 0000 0 00000 4:30 PM 0 0 0 0 0 0000 0 00000 4:45 PM 0 0 0 0 0 0000 0 00000 5:00 PM 0 0 0 0 0 0000 0 00000 5:15 PM 0 0 0 0 0 0000 0 00000 5:30 PM 0 0 0 0 0 0000 0 00000 5:45 PM 0 0 0 0 0 0000 0 00000 TOTAL 00101 0010 1 00000 0010 1 INTERSECTION TURNING MOVEMENT COUNTS PREPARED BY: AimTD LLC. tel: 714 253 7888 cs@aimtd.com Palm Desert Dinah Shore Dick Kelly PM BEGIN PEAK HR 4:00 PM BICYCLE CROSSINGSPEDESTRIAN CROSSINGS U-TURNS Dinah Shore Dinah Shore Dick Kelly Dick Kelly AMPMAM7:15 AM PM4:00 PM PEDESTRIAN + BIKE CROSSINGS 7:15 AM Add U-Turns to Left Turns APPENDIXͲ EXISTINGCONDITIONSPEAKHOURINTERSECTIONANALYSISWORKSHEETS HCM 6th Signalized Intersection Summary Crossing at Palm Desert 1: Gateway Drive & Dick Kelly Drive 12/18/2021 Existing Conditions 2021 Timing Plan: AM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 12 24 13 1 25 4 14 68 1 4 37 2 Future Volume (veh/h) 12 24 13 1 25 4 14 68 1 4 37 2 Initial Q (Qb), veh 000000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 0.99 1.00 1.00 1.00 1.00 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 Adj Flow Rate, veh/h 13 25 14 1 26 4 15 72 1 4 39 2 Peak Hour Factor 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 Percent Heavy Veh, % 222222222222 Cap, veh/h 43 290 149 7 327 49 49 992 14 14 882 45 Arrive On Green 0.02 0.13 0.13 0.00 0.11 0.11 0.03 0.28 0.28 0.01 0.26 0.26 Sat Flow, veh/h 1781 2269 1168 1781 3093 463 1781 3589 50 1781 3441 175 Grp Volume(v), veh/h 13 19 20 1 15 15 15 36 37 4 20 21 Grp Sat Flow(s),veh/h/ln 1781 1777 1660 1781 1777 1780 1781 1777 1861 1781 1777 1839 Q Serve(g_s), s 0.2 0.3 0.3 0.0 0.2 0.2 0.2 0.4 0.4 0.1 0.2 0.2 Cycle Q Clear(g_c), s 0.2 0.3 0.3 0.0 0.2 0.2 0.2 0.4 0.4 0.1 0.2 0.2 Prop In Lane 1.00 0.70 1.00 0.26 1.00 0.03 1.00 0.10 Lane Grp Cap(c), veh/h 43 227 212 7 188 188 49 491 514 14 456 472 V/C Ratio(X) 0.30 0.08 0.09 0.15 0.08 0.08 0.31 0.07 0.07 0.29 0.04 0.04 Avail Cap(c_a), veh/h 496 1530 1430 490 1523 1526 496 1660 1739 490 1654 1711 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Uniform Delay (d), s/veh 13.1 10.5 10.5 13.6 11.0 11.0 13.0 7.3 7.3 13.5 7.6 7.6 Incr Delay (d2), s/veh 3.9 0.2 0.2 10.5 0.2 0.2 3.4 0.1 0.1 11.4 0.0 0.0 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.1 0.1 0.1 0.0 0.1 0.1 0.1 0.1 0.1 0.1 0.0 0.0 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 17.0 10.7 10.7 24.1 11.2 11.2 16.5 7.4 7.4 24.9 7.7 7.7 LnGrp LOS BBBCBBBAACAA Approach Vol, veh/h 52 31 88 45 Approach Delay, s/veh 12.3 11.6 8.9 9.2 Approach LOS BBAA Timer - Assigned Phs 12345678 Phs Duration (G+Y+Rc), s 4.2 11.5 4.1 7.5 4.8 11.0 4.7 6.9 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 7.5 25.5 7.5 23.5 7.6 25.4 7.6 23.4 Max Q Clear Time (g_c+I1), s 2.1 2.4 2.0 2.3 2.2 2.2 2.2 2.2 Green Ext Time (p_c), s 0.0 0.3 0.0 0.1 0.0 0.1 0.0 0.1 Intersection Summary HCM 6th Ctrl Delay 10.2 HCM 6th LOS B HCM 6th Signalized Intersection Summary Crossing at Palm Desert 2: Monterey Avenue & Dick Kelly Drive 12/18/2021 Existing Conditions 2021 Timing Plan: AM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 0 0 0 81 0 19 0 644 58 11 1148 0 Future Volume (veh/h) 0 0 0 81 0 19 0 644 58 11 1148 0 Initial Q (Qb), veh 000000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 1.00 1.00 0.99 1.00 1.00 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 0 Adj Flow Rate, veh/h 0 0 0 57 49 22 0 732 66 12 1305 0 Peak Hour Factor 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 Percent Heavy Veh, % 222222222220 Cap, veh/h 0 297 0 544 194 87 6 1957 599 40 2813 0 Arrive On Green 0.00 0.00 0.00 0.16 0.16 0.16 0.00 0.38 0.38 0.02 0.55 0.00 Sat Flow, veh/h 0 1870 0 1781 1223 549 1781 5106 1563 1781 5274 0 Grp Volume(v), veh/h 0 0 0 57 0 71 0 732 66 12 1305 0 Grp Sat Flow(s),veh/h/ln 0 1870 0 1781 0 1772 1781 1702 1563 1781 1702 0 Q Serve(g_s), s 0.0 0.0 0.0 0.8 0.0 1.0 0.0 2.8 0.7 0.2 4.2 0.0 Cycle Q Clear(g_c), s 0.0 0.0 0.0 0.8 0.0 1.0 0.0 2.8 0.7 0.2 4.2 0.0 Prop In Lane 0.00 0.00 1.00 0.31 1.00 1.00 1.00 0.00 Lane Grp Cap(c), veh/h 0 297 0 544 0 281 6 1957 599 40 2813 0 V/C Ratio(X) 0.00 0.00 0.00 0.10 0.00 0.25 0.00 0.37 0.11 0.30 0.46 0.00 Avail Cap(c_a), veh/h 0 679 0 908 0 643 491 5561 1702 517 5635 0 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 0.00 0.00 0.00 1.00 0.00 1.00 0.00 1.00 1.00 1.00 1.00 0.00 Uniform Delay (d), s/veh 0.0 0.0 0.0 10.1 0.0 10.2 0.0 6.1 5.5 13.3 3.7 0.0 Incr Delay (d2), s/veh 0.0 0.0 0.0 0.1 0.0 0.5 0.0 0.1 0.1 4.2 0.1 0.0 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.0 0.0 0.0 0.2 0.0 0.2 0.0 0.2 0.1 0.1 0.0 0.0 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 0.0 0.0 0.0 10.2 0.0 10.6 0.0 6.2 5.5 17.4 3.9 0.0 LnGrp LOS AAABABAAABAA Approach Vol, veh/h 0 128 798 1317 Approach Delay, s/veh 0.0 10.4 6.2 4.0 Approach LOS B A A Timer - Assigned Phs 1 2 4 5 6 8 Phs Duration (G+Y+Rc), s 4.6 14.6 8.4 0.0 19.2 8.4 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 8.0 30.0 10.0 7.6 30.4 10.0 Max Q Clear Time (g_c+I1), s 2.2 4.8 0.0 0.0 6.2 3.0 Green Ext Time (p_c), s 0.0 4.7 0.0 0.0 8.9 0.2 Intersection Summary HCM 6th Ctrl Delay 5.1 HCM 6th LOS A Notes User approved volume balancing among the lanes for turning movement. Crossing at Palm DesertHCM 6th Signalized Intersection Summary 3: 'LQDK6KRUH'ULYH Dick Kelly Drive 12/18/2021 Existing Conditions 2021 Timing Plan: AM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 4 0 17 0 0 0 19 439 0 0 268 3 Future Volume (veh/h) 4 0 17 0 0 0 19 439 0 0 268 3 Initial Q (Qb), veh 000000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 0.99 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 Adj Flow Rate, veh/h 4 0 19 0 0 0 21 488 0 0 298 3 Peak Hour Factor 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Percent Heavy Veh, % 222222222222 Cap, veh/h 423 0 133 0 78 0 69 2029 905 9 1221 12 Arrive On Green 0.04 0.00 0.04 0.00 0.00 0.00 0.04 0.57 0.00 0.00 0.34 0.34 Sat Flow, veh/h 1781 0 3170 0 1870 0 1781 3554 1585 1781 3604 36 Grp Volume(v), veh/h 4 0 19 0 0 0 21 488 0 0 147 154 Grp Sat Flow(s),veh/h/ln 1781 0 1585 0 1870 0 1781 1777 1585 1781 1777 1863 Q Serve(g_s), s 0.0 0.0 0.1 0.0 0.0 0.0 0.2 1.4 0.0 0.0 1.2 1.2 Cycle Q Clear(g_c), s 0.0 0.0 0.1 0.0 0.0 0.0 0.2 1.4 0.0 0.0 1.2 1.2 Prop In Lane 1.00 1.00 0.00 0.00 1.00 1.00 1.00 0.02 Lane Grp Cap(c), veh/h 423 0 133 0 78 0 69 2029 905 9 602 631 V/C Ratio(X) 0.01 0.00 0.14 0.00 0.00 0.00 0.31 0.24 0.00 0.00 0.24 0.24 Avail Cap(c_a), veh/h 2892 0 4526 0 2671 0 690 4472 1995 647 2193 2300 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 1.00 0.00 1.00 0.00 0.00 0.00 1.00 1.00 0.00 0.00 1.00 1.00 Uniform Delay (d), s/veh 9.5 0.0 9.5 0.0 0.0 0.0 9.7 2.2 0.0 0.0 4.9 4.9 Incr Delay (d2), s/veh 0.0 0.0 0.5 0.0 0.0 0.0 2.5 0.1 0.0 0.0 0.2 0.2 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.1 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 9.5 0.0 10.0 0.0 0.0 0.0 12.2 2.3 0.0 0.0 5.1 5.1 LnGrp LOS AABAAABAAAAA Approach Vol, veh/h 23 0 509 301 Approach Delay, s/veh 9.9 0.0 2.7 5.1 Approach LOS A A A Timer - Assigned Phs 1 2 4 5 6 8 Phs Duration (G+Y+Rc), s 0.0 15.8 4.9 4.8 11.0 4.9 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 7.5 26.0 29.5 8.0 25.5 29.5 Max Q Clear Time (g_c+I1), s 0.0 3.4 2.1 2.2 3.2 0.0 Green Ext Time (p_c), s 0.0 2.9 0.0 0.0 1.5 0.0 Intersection Summary HCM 6th Ctrl Delay 3.8 HCM 6th LOS A Notes User approved volume balancing among the lanes for turning movement. HCM 6th Signalized Intersection Summary Crossing at Palm Desert 1: Gateway Drive & Dick Kelly Drive 12/18/2021 Existing Conditions 2021 Timing Plan: PM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 6 53 41 1 32 8 30 62 1 17 79 21 Future Volume (veh/h) 6 53 41 1 32 8 30 62 1 17 79 21 Initial Q (Qb), veh 000000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 Adj Flow Rate, veh/h 7 62 48 1 38 9 35 73 1 20 93 25 Peak Hour Factor 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 Percent Heavy Veh, % 222222222222 Cap, veh/h 24 359 252 6 485 111 105 936 13 64 663 172 Arrive On Green 0.01 0.18 0.18 0.00 0.17 0.17 0.06 0.26 0.26 0.04 0.24 0.24 Sat Flow, veh/h 1781 1996 1399 1781 2873 656 1781 3589 49 1781 2791 724 Grp Volume(v), veh/h 7 54 56 1 23 24 35 36 38 20 58 60 Grp Sat Flow(s),veh/h/ln 1781 1777 1618 1781 1777 1752 1781 1777 1861 1781 1777 1738 Q Serve(g_s), s 0.1 0.8 0.9 0.0 0.3 0.4 0.6 0.5 0.5 0.3 0.8 0.8 Cycle Q Clear(g_c), s 0.1 0.8 0.9 0.0 0.3 0.4 0.6 0.5 0.5 0.3 0.8 0.8 Prop In Lane 1.00 0.86 1.00 0.37 1.00 0.03 1.00 0.42 Lane Grp Cap(c), veh/h 24 320 291 6 300 296 105 463 485 64 422 413 V/C Ratio(X) 0.30 0.17 0.19 0.17 0.08 0.08 0.33 0.08 0.08 0.31 0.14 0.15 Avail Cap(c_a), veh/h 435 1361 1240 435 1361 1342 441 1477 1547 435 1471 1439 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Uniform Delay (d), s/veh 15.0 10.6 10.7 15.3 10.7 10.7 13.9 8.6 8.6 14.4 9.2 9.2 Incr Delay (d2), s/veh 6.8 0.2 0.3 13.5 0.1 0.1 1.8 0.1 0.1 2.8 0.1 0.2 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.1 0.2 0.2 0.0 0.1 0.1 0.2 0.1 0.1 0.1 0.2 0.2 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 21.8 10.9 11.0 28.7 10.8 10.9 15.7 8.6 8.6 17.2 9.4 9.4 LnGrp LOS CBBCBBBAABAA Approach Vol, veh/h 117 48 109 138 Approach Delay, s/veh 11.6 11.2 10.9 10.5 Approach LOS BBBB Timer - Assigned Phs 12345678 Phs Duration (G+Y+Rc), s 5.1 12.0 4.1 9.5 5.8 11.3 4.4 9.2 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 7.5 25.5 7.5 23.5 7.6 25.4 7.5 23.5 Max Q Clear Time (g_c+I1), s 2.3 2.5 2.0 2.9 2.6 2.8 2.1 2.4 Green Ext Time (p_c), s 0.0 0.3 0.0 0.4 0.0 0.5 0.0 0.1 Intersection Summary HCM 6th Ctrl Delay 11.0 HCM 6th LOS B HCM 6th Signalized Intersection Summary Crossing at Palm Desert 2: Monterey Avenue & Dick Kelly Drive 12/18/2021 Existing Conditions 2021 Timing Plan: PM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 0 0 0 194 0 68 0 1323 163 33 1039 0 Future Volume (veh/h) 0 0 0 194 0 68 0 1323 163 33 1039 0 Initial Q (Qb), veh 000000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 0 Adj Flow Rate, veh/h 0 0 0 136 92 71 0 1378 170 34 1082 0 Peak Hour Factor 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 Percent Heavy Veh, % 222222222220 Cap, veh/h 0 320 0 488 168 129 5 2390 742 98 3192 0 Arrive On Green 0.00 0.00 0.00 0.17 0.17 0.17 0.00 0.47 0.47 0.06 0.63 0.00 Sat Flow, veh/h 0 1870 0 1781 979 755 1781 5106 1584 1781 5274 0 Grp Volume(v), veh/h 0 0 0 136 0 163 0 1378 170 34 1082 0 Grp Sat Flow(s),veh/h/ln 0 1870 0 1781 0 1734 1781 1702 1584 1781 1702 0 Q Serve(g_s), s 0.0 0.0 0.0 2.7 0.0 3.4 0.0 7.7 2.5 0.7 4.0 0.0 Cycle Q Clear(g_c), s 0.0 0.0 0.0 2.7 0.0 3.4 0.0 7.7 2.5 0.7 4.0 0.0 Prop In Lane 0.00 0.00 1.00 0.44 1.00 1.00 1.00 0.00 Lane Grp Cap(c), veh/h 0 320 0 488 0 297 5 2390 742 98 3192 0 V/C Ratio(X) 0.00 0.00 0.00 0.28 0.00 0.55 0.00 0.58 0.23 0.35 0.34 0.00 Avail Cap(c_a), veh/h 0 628 0 782 0 583 340 3482 1080 363 3547 0 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 0.00 0.00 0.00 1.00 0.00 1.00 0.00 1.00 1.00 1.00 1.00 0.00 Uniform Delay (d), s/veh 0.0 0.0 0.0 14.6 0.0 14.9 0.0 7.6 6.2 17.9 3.5 0.0 Incr Delay (d2), s/veh 0.0 0.0 0.0 0.3 0.0 1.6 0.0 0.2 0.2 2.1 0.1 0.0 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.0 0.0 0.0 0.9 0.0 1.1 0.0 1.2 0.4 0.3 0.1 0.0 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 0.0 0.0 0.0 14.9 0.0 16.5 0.0 7.8 6.4 20.0 3.6 0.0 LnGrp LOS AAABABAAABAA Approach Vol, veh/h 0 299 1548 1116 Approach Delay, s/veh 0.0 15.8 7.7 4.1 Approach LOS B A A Timer - Assigned Phs 1 2 4 5 6 8 Phs Duration (G+Y+Rc), s 6.2 22.4 10.7 0.0 28.6 10.7 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 8.0 26.8 13.2 7.5 27.3 13.2 Max Q Clear Time (g_c+I1), s 2.7 9.7 0.0 0.0 6.0 5.4 Green Ext Time (p_c), s 0.0 8.6 0.0 0.0 6.8 0.7 Intersection Summary HCM 6th Ctrl Delay 7.1 HCM 6th LOS A Notes User approved volume balancing among the lanes for turning movement. Crossing at Palm DesertHCM 6th Signalized Intersection Summary 3: 'LQDK6KRUH'ULYH Dick Kelly Drive 12/18/2021 Existing Conditions 2021 Timing Plan: PM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 12 0 46 0 0 0 36 464 0 0 431 12 Future Volume (veh/h) 12 0 46 0 0 0 36 464 0 0 431 12 Initial Q (Qb), veh 000000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 Adj Flow Rate, veh/h 12 0 48 0 0 0 38 483 0 0 449 12 Peak Hour Factor 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 Percent Heavy Veh, % 222222222222 Cap, veh/h 488 0 308 0 182 0 117 1963 875 8 1101 29 Arrive On Green 0.10 0.00 0.10 0.00 0.00 0.00 0.07 0.55 0.00 0.00 0.31 0.31 Sat Flow, veh/h 1781 0 3170 0 1870 0 1781 3554 1585 1781 3536 94 Grp Volume(v), veh/h 12 0 48 0 0 0 38 483 0 0 225 236 Grp Sat Flow(s),veh/h/ln 1781 0 1585 0 1870 0 1781 1777 1585 1781 1777 1853 Q Serve(g_s), s 0.1 0.0 0.3 0.0 0.0 0.0 0.5 1.6 0.0 0.0 2.3 2.3 Cycle Q Clear(g_c), s 0.1 0.0 0.3 0.0 0.0 0.0 0.5 1.6 0.0 0.0 2.3 2.3 Prop In Lane 1.00 1.00 0.00 0.00 1.00 1.00 1.00 0.05 Lane Grp Cap(c), veh/h 488 0 308 0 182 0 117 1963 875 8 553 577 V/C Ratio(X) 0.02 0.00 0.16 0.00 0.00 0.00 0.32 0.25 0.00 0.00 0.41 0.41 Avail Cap(c_a), veh/h 2619 0 4099 0 2418 0 625 4050 1806 586 1986 2071 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 1.00 0.00 1.00 0.00 0.00 0.00 1.00 1.00 0.00 0.00 1.00 1.00 Uniform Delay (d), s/veh 9.4 0.0 9.4 0.0 0.0 0.0 10.2 2.6 0.0 0.0 6.2 6.2 Incr Delay (d2), s/veh 0.0 0.0 0.2 0.0 0.0 0.0 1.6 0.1 0.0 0.0 0.5 0.5 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.3 0.3 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 9.4 0.0 9.7 0.0 0.0 0.0 11.8 2.7 0.0 0.0 6.7 6.7 LnGrp LOS AAAAAABAAAAA Approach Vol, veh/h 60 0 521 461 Approach Delay, s/veh 9.6 0.0 3.4 6.7 Approach LOS A A A Timer - Assigned Phs 1 2 4 5 6 8 Phs Duration (G+Y+Rc), s 0.0 16.6 6.2 5.5 11.1 6.2 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 7.5 26.0 29.5 8.0 25.5 29.5 Max Q Clear Time (g_c+I1), s 0.0 3.6 2.3 2.5 4.3 0.0 Green Ext Time (p_c), s 0.0 2.9 0.2 0.0 2.3 0.0 Intersection Summary HCM 6th Ctrl Delay 5.2 HCM 6th LOS A Notes User approved volume balancing among the lanes for turning movement. APPENDIXCͲ WZK:dKDW>d/KECONDITIONSPEAKHOURINTERSECTIONANALYSISWORKSHEETS HCM 6th Signalized Intersection Summary Crossings at Palm Desert 1: Gateway Drive & Dick Kelly Drive 03/19/2022 Project Completion 2023 Timing Plan: AM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 13 26 17 8 30 5 23 82 2 5 42 3 Future Volume (veh/h) 13 26 17 8 30 5 23 82 2 5 42 3 Initial Q (Qb), veh 0 0 0 000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 0.99 1.00 1.00 1.00 1.00 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 Adj Flow Rate, veh/h 14 27 18 8 32 5 24 86 2 5 44 3 Peak Hour Factor 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 0.95 Percent Heavy Veh, %222222222222 Cap, veh/h 46 289 175 27 386 59 76 989 23 17 829 56 Arrive On Green 0.03 0.14 0.14 0.02 0.13 0.13 0.04 0.28 0.28 0.01 0.25 0.25 Sat Flow, veh/h 1781 2129 1286 1781 3086 470 1781 3550 82 1781 3378 228 Grp Volume(v), veh/h 14 22 23 8 18 19 24 43 45 5 23 24 Grp Sat Flow(s),veh/h/ln 1781 1777 1639 1781 1777 1779 1781 1777 1856 1781 1777 1829 Q Serve(g_s), s 0.2 0.3 0.3 0.1 0.3 0.3 0.4 0.5 0.5 0.1 0.3 0.3 Cycle Q Clear(g_c), s 0.2 0.3 0.3 0.1 0.3 0.3 0.4 0.5 0.5 0.1 0.3 0.3 Prop In Lane 1.00 0.78 1.00 0.26 1.00 0.04 1.00 0.12 Lane Grp Cap(c), veh/h 46 241 223 27 222 223 76 495 517 17 436 449 V/C Ratio(X) 0.31 0.09 0.10 0.30 0.08 0.09 0.32 0.09 0.09 0.29 0.05 0.05 Avail Cap(c_a), veh/h 469 1464 1351 469 1464 1466 500 1589 1659 469 1558 1604 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Uniform Delay (d), s/veh 13.6 10.8 10.8 13.9 11.0 11.0 13.2 7.6 7.6 14.0 8.2 8.2 Incr Delay (d2), s/veh 3.7 0.2 0.2 6.0 0.2 0.2 2.4 0.1 0.1 9.3 0.0 0.0 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 17.3 10.9 11.0 19.9 11.2 11.2 15.6 7.7 7.7 23.3 8.3 8.3 LnGrp LOS BBBBBBBAACAA Approach Vol, veh/h 59 45 112 52 Approach Delay, s/veh 12.5 12.7 9.4 9.7 Approach LOS BBAA Timer - Assigned Phs 12345678 Phs Duration (G+Y+Rc), s 4.3 11.9 4.4 7.9 5.2 11.0 4.7 7.6 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 7.5 25.5 7.5 23.5 8.0 25.0 7.5 23.5 Max Q Clear Time (g_c+I1), s 2.1 2.5 2.1 2.3 2.4 2.3 2.2 2.3 Green Ext Time (p_c), s 0.0 0.3 0.0 0.1 0.0 0.1 0.0 0.1 Intersection Summary HCM 6th Ctrl Delay 10.7 HCM 6th LOS B HCM 6th Signalized Intersection Summary Crossings at Palm Desert 2: Monterey Avenue & Dick Kelly Drive 03/19/2022 Project Completion 2023 Timing Plan: AM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 0 0 0 88 0 28 0 671 62 15 1195 0 Future Volume (veh/h) 0 0 0 88 0 28 0 671 62 15 1195 0 Initial Q (Qb), veh 0 0 0 000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 1.00 1.00 0.99 1.00 1.00 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 0 Adj Flow Rate, veh/h 0 0 0 66 48 32 0 762 70 17 1358 0 Peak Hour Factor 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 0.88 Percent Heavy Veh, %222222222220 Cap, veh/h 0 313 0 549 175 117 6 1964 601 55 2832 0 Arrive On Green 0.00 0.00 0.00 0.17 0.17 0.17 0.00 0.38 0.38 0.03 0.55 0.00 Sat Flow, veh/h 0 1870 0 1781 1047 698 1781 5106 1563 1781 5274 0 Grp Volume(v), veh/h 0 0 0 66 0 80 0 762 70 17 1358 0 Grp Sat Flow(s),veh/h/ln 0 1870 0 1781 0 1745 1781 1702 1563 1781 1702 0 Q Serve(g_s), s 0.0 0.0 0.0 0.9 0.0 1.2 0.0 3.1 0.8 0.3 4.6 0.0 Cycle Q Clear(g_c), s 0.0 0.0 0.0 0.9 0.0 1.2 0.0 3.1 0.8 0.3 4.6 0.0 Prop In Lane 0.00 0.00 1.00 0.40 1.00 1.00 1.00 0.00 Lane Grp Cap(c), veh/h 0 313 0 549 0 292 6 1964 601 55 2832 0 V/C Ratio(X) 0.00 0.00 0.00 0.12 0.00 0.27 0.00 0.39 0.12 0.31 0.48 0.00 Avail Cap(c_a), veh/h 0 650 0 869 0 606 470 5322 1629 495 5393 0 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 0.00 0.00 0.00 1.00 0.00 1.00 0.00 1.00 1.00 1.00 1.00 0.00 Uniform Delay (d), s/veh 0.0 0.0 0.0 10.4 0.0 10.5 0.0 6.4 5.7 13.6 3.9 0.0 Incr Delay (d2), s/veh 0.0 0.0 0.0 0.1 0.0 0.5 0.0 0.1 0.1 3.1 0.1 0.0 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.0 0.0 0.0 0.2 0.0 0.3 0.0 0.3 0.1 0.1 0.0 0.0 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 0.0 0.0 0.0 10.5 0.0 11.0 0.0 6.5 5.8 16.8 4.0 0.0 LnGrp LOS AAABABAAABAA Approach Vol, veh/h 0 146 832 1375 Approach Delay, s/veh 0.0 10.7 6.5 4.2 Approach LOS B A A Timer - Assigned Phs 1 2 4 5 6 8 Phs Duration (G+Y+Rc), s 4.9 15.1 8.8 0.0 20.0 8.8 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 8.0 30.0 10.0 7.6 30.4 10.0 Max Q Clear Time (g_c+I1), s 2.3 5.1 0.0 0.0 6.6 3.2 Green Ext Time (p_c), s 0.0 5.0 0.0 0.0 9.3 0.2 Intersection Summary HCM 6th Ctrl Delay 5.4 HCM 6th LOS A Notes User approved volume balancing among the lanes for turning movement. HCM 6th Signalized Intersection Summary Crossings at Palm Desert 3: Dinah Shore Drive & Dick Kelly Drive 03/19/2022 Project Completion 2023 Timing Plan: AM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 16 0 2900023457002797 Future Volume (veh/h) 16 0 29 0 0 0 23 457 0 0 279 7 Initial Q (Qb), veh 0 0 0 000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 0.99 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 Adj Flow Rate, veh/h 18 0 3200026508003108 Peak Hour Factor 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Percent Heavy Veh, %222222222222 Cap, veh/h 479 0 266 0 157 0 83 1955 872 8 1133 29 Arrive On Green 0.08 0.00 0.08 0.00 0.00 0.00 0.05 0.55 0.00 0.00 0.32 0.32 Sat Flow, veh/h 1781 0 3170 0 1870 0 1781 3554 1585 1781 3538 91 Grp Volume(v), veh/h 18 0 32 0 0 0 26 508 0 0 155 163 Grp Sat Flow(s),veh/h/ln 1781 0 1585 0 1870 0 1781 1777 1585 1781 1777 1853 Q Serve(g_s), s 0.2 0.0 0.2 0.0 0.0 0.0 0.3 1.6 0.0 0.0 1.4 1.4 Cycle Q Clear(g_c), s 0.2 0.0 0.2 0.0 0.0 0.0 0.3 1.6 0.0 0.0 1.4 1.4 Prop In Lane 1.00 1.00 0.00 0.00 1.00 1.00 1.00 0.05 Lane Grp Cap(c), veh/h 479 0 266 0 157 0 83 1955 872 8 569 593 V/C Ratio(X) 0.04 0.00 0.12 0.00 0.00 0.00 0.31 0.26 0.00 0.00 0.27 0.27 Avail Cap(c_a), veh/h 2734 0 4279 0 2525 0 652 4228 1886 611 2073 2162 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 1.00 0.00 1.00 0.00 0.00 0.00 1.00 1.00 0.00 0.00 1.00 1.00 Uniform Delay (d), s/veh 9.3 0.0 9.3 0.0 0.0 0.0 10.1 2.6 0.0 0.0 5.5 5.5 Incr Delay (d2), s/veh 0.0 0.0 0.2 0.0 0.0 0.0 2.1 0.1 0.0 0.0 0.3 0.2 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.1 0.1 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 9.3 0.0 9.5 0.0 0.0 0.0 12.2 2.7 0.0 0.0 5.8 5.8 LnGrp LOS AAAAAABAAAAA Approach Vol, veh/h 50 0 534 318 Approach Delay, s/veh 9.4 0.0 3.1 5.8 Approach LOS A A A Timer - Assigned Phs 1 2 4 5 6 8 Phs Duration (G+Y+Rc), s 0.0 16.0 5.8 5.0 11.0 5.8 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 7.5 26.0 29.5 8.0 25.5 29.5 Max Q Clear Time (g_c+I1), s 0.0 3.6 2.2 2.3 3.4 0.0 Green Ext Time (p_c), s 0.0 3.0 0.1 0.0 1.5 0.0 Intersection Summary HCM 6th Ctrl Delay 4.4 HCM 6th LOS A Notes User approved volume balancing among the lanes for turning movement. HCM 6th Signalized Intersection Summary Crossings at Palm Desert 1: Gateway Drive & Dick Kelly Drive 03/19/2022 Project Completion 2023 Timing Plan: PM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 7 59 52 22 36 9 37 72 2 18 94 22 Future Volume (veh/h) 7 59 52 22 36 9 37 72 2 18 94 22 Initial Q (Qb), veh 0 0 0 000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 Adj Flow Rate, veh/h 8 69 61 26 42 11 44 85 2 21 111 26 Peak Hour Factor 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 0.85 Percent Heavy Veh, %222222222222 Cap, veh/h 27 331 263 80 578 146 125 907 21 66 639 145 Arrive On Green 0.02 0.18 0.18 0.04 0.21 0.21 0.07 0.26 0.26 0.04 0.22 0.22 Sat Flow, veh/h 1781 1883 1495 1781 2812 708 1781 3549 83 1781 2874 654 Grp Volume(v), veh/h 8 65 65 26 26 27 44 42 45 21 67 70 Grp Sat Flow(s),veh/h/ln 1781 1777 1601 1781 1777 1743 1781 1777 1855 1781 1777 1751 Q Serve(g_s), s 0.1 1.0 1.2 0.5 0.4 0.4 0.8 0.6 0.6 0.4 1.0 1.1 Cycle Q Clear(g_c), s 0.1 1.0 1.2 0.5 0.4 0.4 0.8 0.6 0.6 0.4 1.0 1.1 Prop In Lane 1.00 0.93 1.00 0.41 1.00 0.04 1.00 0.37 Lane Grp Cap(c), veh/h 27 312 281 80 365 358 125 454 474 66 395 389 V/C Ratio(X) 0.30 0.21 0.23 0.32 0.07 0.08 0.35 0.09 0.09 0.32 0.17 0.18 Avail Cap(c_a), veh/h 406 1270 1144 406 1270 1245 406 1378 1438 406 1378 1357 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Uniform Delay (d), s/veh 16.0 11.6 11.6 15.2 10.5 10.5 14.6 9.3 9.3 15.4 10.3 10.4 Incr Delay (d2), s/veh 6.1 0.3 0.4 2.3 0.1 0.1 1.7 0.1 0.1 2.7 0.2 0.2 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.1 0.3 0.3 0.2 0.1 0.1 0.3 0.1 0.1 0.2 0.3 0.3 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 22.1 11.9 12.1 17.5 10.6 10.6 16.2 9.4 9.4 18.1 10.5 10.6 LnGrp LOS C BBBBBBAABBB Approach Vol, veh/h 138 79 131 158 Approach Delay, s/veh 12.6 12.9 11.7 11.6 Approach LOS BBBB Timer - Assigned Phs 12345678 Phs Duration (G+Y+Rc), s 5.2 12.4 5.5 9.8 6.3 11.3 4.5 10.8 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 7.5 25.5 7.5 23.5 7.5 25.5 7.5 23.5 Max Q Clear Time (g_c+I1), s 2.4 2.6 2.5 3.2 2.8 3.1 2.1 2.4 Green Ext Time (p_c), s 0.0 0.3 0.0 0.6 0.0 0.6 0.0 0.2 Intersection Summary HCM 6th Ctrl Delay 12.1 HCM 6th LOS B HCM 6th Signalized Intersection Summary Crossings at Palm Desert 2: Monterey Avenue & Dick Kelly Drive 03/19/2022 Project Completion 2023 Timing Plan: PM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 0 0 0 204 0 76 0 1377 173 44 1081 0 Future Volume (veh/h) 0 0 0 204 0 76 0 1377 173 44 1081 0 Initial Q (Qb), veh 0 0 0 000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 0 Adj Flow Rate, veh/h 0 0 0 146 93 79 0 1434 180 46 1126 0 Peak Hour Factor 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 Percent Heavy Veh, %222222222220 Cap, veh/h 0 315 0 478 157 134 4 2374 737 124 3236 0 Arrive On Green 0.00 0.00 0.00 0.17 0.17 0.17 0.00 0.46 0.46 0.07 0.63 0.00 Sat Flow, veh/h 0 1870 0 1781 934 793 1781 5106 1584 1781 5274 0 Grp Volume(v), veh/h 0 0 0 146 0 172 0 1434 180 46 1126 0 Grp Sat Flow(s),veh/h/ln 0 1870 0 1781 0 1728 1781 1702 1584 1781 1702 0 Q Serve(g_s), s 0.0 0.0 0.0 3.0 0.0 3.7 0.0 8.4 2.8 1.0 4.2 0.0 Cycle Q Clear(g_c), s 0.0 0.0 0.0 3.0 0.0 3.7 0.0 8.4 2.8 1.0 4.2 0.0 Prop In Lane 0.00 0.00 1.00 0.46 1.00 1.00 1.00 0.00 Lane Grp Cap(c), veh/h 0 315 0 478 0 291 4 2374 737 124 3236 0 V/C Ratio(X) 0.00 0.00 0.00 0.31 0.00 0.59 0.00 0.60 0.24 0.37 0.35 0.00 Avail Cap(c_a), veh/h 0 694 0 839 0 641 330 3208 995 335 3236 0 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 0.00 0.00 0.00 1.00 0.00 1.00 0.00 1.00 1.00 1.00 1.00 0.00 Uniform Delay (d), s/veh 0.0 0.0 0.0 15.2 0.0 15.5 0.0 8.0 6.5 18.0 3.5 0.0 Incr Delay (d2), s/veh 0.0 0.0 0.0 0.4 0.0 1.9 0.0 0.2 0.2 1.8 0.1 0.0 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.0 0.0 0.0 1.0 0.0 1.3 0.0 1.4 0.4 0.4 0.1 0.0 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 0.0 0.0 0.0 15.6 0.0 17.4 0.0 8.3 6.7 19.8 3.5 0.0 LnGrp LOS AAABABAAABAA Approach Vol, veh/h 0 318 1614 1172 Approach Delay, s/veh 0.0 16.6 8.1 4.2 Approach LOS B A A Timer - Assigned Phs 1 2 4 5 6 8 Phs Duration (G+Y+Rc), s 6.8 22.8 10.8 0.0 29.6 10.8 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 7.6 25.4 15.0 7.5 25.5 15.0 Max Q Clear Time (g_c+I1), s 3.0 10.4 0.0 0.0 6.2 5.7 Green Ext Time (p_c), s 0.0 8.3 0.0 0.0 6.8 0.9 Intersection Summary HCM 6th Ctrl Delay 7.5 HCM 6th LOS A Notes User approved volume balancing among the lanes for turning movement. HCM 6th Signalized Intersection Summary Crossings at Palm Desert 3: Dinah Shore Drive & Dick Kelly Drive 03/19/2022 Project Completion 2023 Timing Plan: PM Peak Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Traffic Volume (veh/h) 20 0 55000494830044922 Future Volume (veh/h) 20 0 55 0 0 0 49 483 0 0 449 22 Initial Q (Qb), veh 0 0 0 000000000 Ped-Bike Adj(A_pbT) 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Parking Bus, Adj 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Work Zone On Approach No No No No Adj Sat Flow, veh/h/ln 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 1870 Adj Flow Rate, veh/h 21 0 57000515030046823 Peak Hour Factor 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 0.96 Percent Heavy Veh, %222222222222 Cap, veh/h 508 0 374 0 221 0 150 1958 873 7 1039 51 Arrive On Green 0.12 0.00 0.12 0.00 0.00 0.00 0.08 0.55 0.00 0.00 0.30 0.30 Sat Flow, veh/h 1781 0 3170 0 1870 0 1781 3554 1585 1781 3447 169 Grp Volume(v), veh/h 21 0 57 0 0 0 51 503 0 0 241 250 Grp Sat Flow(s),veh/h/ln 1781 0 1585 0 1870 0 1781 1777 1585 1781 1777 1840 Q Serve(g_s), s 0.3 0.0 0.4 0.0 0.0 0.0 0.7 1.8 0.0 0.0 2.6 2.7 Cycle Q Clear(g_c), s 0.3 0.0 0.4 0.0 0.0 0.0 0.7 1.8 0.0 0.0 2.6 2.7 Prop In Lane 1.00 1.00 0.00 0.00 1.00 1.00 1.00 0.09 Lane Grp Cap(c), veh/h 508 0 374 0 221 0 150 1958 873 7 536 555 V/C Ratio(X) 0.04 0.00 0.15 0.00 0.00 0.00 0.34 0.26 0.00 0.00 0.45 0.45 Avail Cap(c_a), veh/h 2472 0 3869 0 2283 0 590 3823 1705 553 1875 1941 HCM Platoon Ratio 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Upstream Filter(I) 1.00 0.00 1.00 0.00 0.00 0.00 1.00 1.00 0.00 0.00 1.00 1.00 Uniform Delay (d), s/veh 9.5 0.0 9.6 0.0 0.0 0.0 10.4 2.8 0.0 0.0 6.8 6.8 Incr Delay (d2), s/veh 0.0 0.0 0.2 0.0 0.0 0.0 1.3 0.1 0.0 0.0 0.6 0.6 Initial Q Delay(d3),s/veh 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 %ile BackOfQ(50%),veh/ln 0.1 0.0 0.1 0.0 0.0 0.0 0.2 0.0 0.0 0.0 0.4 0.4 Unsig. Movement Delay, s/veh LnGrp Delay(d),s/veh 9.5 0.0 9.8 0.0 0.0 0.0 11.8 2.9 0.0 0.0 7.4 7.4 LnGrp LOS AAAAAABAAAAA Approach Vol, veh/h 78 0 554 491 Approach Delay, s/veh 9.7 0.0 3.7 7.4 Approach LOS A A A Timer - Assigned Phs 1 2 4 5 6 8 Phs Duration (G+Y+Rc), s 0.0 17.3 6.9 6.0 11.3 6.9 Change Period (Y+Rc), s 4.0 4.0 4.0 4.0 4.0 4.0 Max Green Setting (Gmax), s 7.5 26.0 29.5 8.0 25.5 29.5 Max Q Clear Time (g_c+I1), s 0.0 3.8 2.4 2.7 4.7 0.0 Green Ext Time (p_c), s 0.0 3.0 0.2 0.0 2.5 0.0 Intersection Summary HCM 6th Ctrl Delay 5.7 HCM 6th LOS A Notes User approved volume balancing among the lanes for turning movement. APPENDIX D - TRANSIT ROUTE INFORMATION Effective October 17, 2021 Efectivo 17 de octubre de 2021SunLine Transit Agency • SunLine.org ROUTE RUTA4 WESTFIELD PALM DESERT PALM SPRINGSL L M H H ROUTE / RUTA POST OFFICE / OFICINA POSTAL HOSPITAL SCHOOL / ESCUELA MALL / CENTRO COMERCIAL SENIOR CENTER / CENTRO PARA ADULTOS MAYORES CASINO AIRPORT / AEROPUERTO CITY HALL / AYUNTAMIENTO LIBRARY / BIBLIOTECA SUNLINE TRANSIT AGENCY TIMEPOINT / PUNTO DE TIEMPO TRANSFER POINT / PUNTO DE TRANSFERENCIA TOWN CENTER WAYBOB HOPE DRMONTEREY AVECOUNTRY CLUB DR FRED WARING DR HWY 111 M S RANCHO MIRAGE PALM DESERT CITY N 6 15 1XRATTLERRDSOUTH PALM CANYONINDIAN CANYON DREL CIELO RD RDDATE PALMMONTEREY AVEFARRELL DRSUNRISE WAYVISTA CHINO AVE 30TH DINAH SHORE DRGATEWAY DR N P A L M C A N Y O N D R RAMON RDRAMON RD EAST TAHQUITZ CANYON WAY RACQUET CLUB DR ROSA PARKS RD TACHEVAH DR STEVENS RD AVENIDA MARAVILLAE BARISTO PALM SPRINGS PALM SPRINGS THOUSAND PALMS CATHEDRAL CITYN INDIAN CANYONH C C E SAN RAFAEL DR GENEAUTRYGENEAUTRYSHOPPERS LN 2 21 2 L H ROUTE / RUTA POST OFFICE / OFICINA POSTAL HOSPITAL SCHOOL / ESCUELA MALL / CENTRO COMERCIAL SENIOR CENTER / CENTRO PARA ADULTOS MAYORES CASINO AIRPORT / AEROPUERTO CITY HALL / AYUNTAMIENTO LIBRARY / BIBLIOTECA SUNLINE TRANSIT AGENCY TIMEPOINT / PUNTO DE TIEMPO TRANSFER POINT / PUNTO DE TRANSFERENCIA M S CS NIVEL 2 HORARIO 7 DÍAS Effective October 17, 2021 Efectivo 17 de octubre de 2021SunLine Transit Agency • SunLine.org ROUTE RUTA4 WESTFIELD PALM DESERT PALM SPRINGSTown Center Way @ HahnDinah Shore @ Shoppers LnDate Palm @ RamonPalm Cyn @ StevensSunrise Way @ Vista ChinoIndian Canyon @ RamonEl Cielo @ Kirk Douglas 6:10a 6:30a 6:46a 7:10a 7:25a 7:36a 7:47a 7:10a 7:30a 7:46a 8:10a 8:25a 8:36a 8:47a 8:10a 8:30a 8:46a 9:10a 9:25a 9:36a 9:47a 9:10a 9:30a 9:46a 10:10a 10:25a 10:36a 10:47a 10:10a 10:32a 10:49a 11:13a 11:28a 11:41a 11:53a 11:10a 11:32a 11:49a 12:13p 12:28p 12:41p 12:53p 12:10p 12:32p 12:49p 1:13p 1:28p 1:41p 1:53p 1:10p 1:32p 1:49p 2:13p 2:28p 2:41p 2:53p 2:10p 2:32p 2:49p 3:13p 3:28p 3:41p 3:53p 3:10p 3:32p 3:49p 4:13p 4:28p 4:41p 4:53p 4:10p 4:32p 4:49p 5:13p 5:28p 5:41p 5:53p 5:10p 5:31p 5:48p 6:12p 6:26p 6:40p 6:52p 6:10p 6:31p 6:48p 7:12p 7:26p 7:40p 7:52p 7:10p 7:31p 7:48p 8:12p 8:26p 8:40p 8:52p 8:10p 8:31p 8:47p 9:12p 9:26p 9:39p 9:50pEl Cielo @ Kirk DouglasVista Chino @ Sunrise WayRamon @ Date PalmDinah Shore @ Shoppers LnTown Center Way @ Hahn 6:10a 6:42a 7:05a 7:20a 7:41a 7:10a 7:42a 8:05a 8:20a 8:41a 8:10a 8:42a 9:05a 9:20a 9:41a 9:10a 9:42a 10:05a 10:20a 10:41a 10:10a 10:43a 11:05a 11:20a 11:43a 11:10a 11:43a 12:05p 12:20p 12:43p 12:10p 12:43p 1:05p 1:20p 1:43p 1:10p 1:43p 2:05p 2:20p 2:43p 2:10p 2:43p 3:05p 3:20p 3:43p 3:10p 3:43p 4:05p 4:20p 4:43p 4:10p 4:43p 5:05p 5:20p 5:43p 5:10p 5:43p 6:07p 6:20p 6:40p 6:10p 6:43p 7:07p 7:20p 7:40p 7:10p 7:43p 8:07p 8:20p 8:40p 8:10p 8:42p 9:03p 9:20p 9:38p WESTBOUND | HACIA EL OESTEEASTBOUND | HACIA EL ESTE S NIVEL 2 HORARIO 7 DÍASFor the VillageFest Thursday night detour, please see the map.Para ver el desvío del jueves del VillageFest, por favor vea el mapa.- This section is intentionally left blank - Effective October 17, 2021 Efectivo 17 de octubre de 2021SunLine Transit Agency • SunLine.org VILLAGEFEST DETOUR Due to the Palm Springs VillageFest every Thursday night, Routes 1, 2 and 4 will be on detour from 5:00 p.m. to 11:00 p.m. Todos los jueves por la noche de 5:00 p.m. a 11:00 p.m., las Rutas 1, 2 y 4 tendrán un desvío, debido al VillageFest de Palm Springs. = Stops closed Paradas cerradas = Route/Ruta 2 = Route/Ruta 4 = Temporary stops Paradas temporales T = Stops available Paradas disponibles = Road Closure Cierre de ruta = Route/Ruta 1 GRANVIA VALMONTE ALEJO AMADO ANDREAS ENCILIAARENAS CAMINO PAROCELA BARISTO INDIAN CANYONTAHQUITZ PALM CYN - CLOSED ROAD127 125 124 RAMON T ENCILIAPALM CANYONN PALM SPRINGS  &5266,1*6$73$/0'(6(57 6287+($67&251(52)',&..(//(<'5,9($1'*$7(:$<'5,9( 3$/0'(6(57&$   35(/,0,1$5<+<'52/2*<5(3257    35(3$5(')25 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ERWWRPVXUIDFHDUHDRIWKHEDVLQWKHGHVLJQLQILOWUDWLRQUDWHFDQEHDSSOLHGWRWKHVWRUHG YROXPHGHSWKWRFDOFXODWHWKHGUDZGRZQWLPHIRUFRPSOHWHHYDFXDWLRQDVIROORZV  6WRUHG5XQRII9ROXPH'HSWK IW LQ  $VVXPHG,QILOWUDWLRQ5DWH LQKU  LQ  LQKU  KUVKUV  7KHWRWDOVWRUHGUXQRIIYROXPHLQWKHRQVLWHVXUIDFHUHWHQWLRQEDVLQFDQEHHYDFXDWHG FRPSOHWHO\YLDLQILOWUDWLRQZLWKLQDSHULRGRIKUVDVVXPLQJDFRQVHUYDWLYHGHVLJQ LQILOWUDWLRQUDWHRILQKU                            $33(1',;±5()(5(1&(0$7(5,$/                                           8711 Monroe Court, Suite A Rancho Cucamonga, CA 91730 (909) 980-6455 Office (909) 980-6435 Fax SAN JOSE ▪ STOCKTON ▪ FRESNO ▪ BAKERSFIELD ▪ RANCHO CUCAMONGA ▪ DALLAS DALLAS, TX, ▪ DENVER, CO ▪ CHARLESTON, SC November 2, 2021 Job No. 3-221-1146 Ms. Lauren Reese The Altum Group 44-600 Village Court, Suite 100 Palm Desert, CA 92260 SUBJECT: GEOTECHNICAL INVESTIGATION REPORT UPDATE PROPOSED APARTMENT COMPLEX DICK KELLY DRIVE & GATEWAY DRIVE PALM DESERT, CALIFORNIA Reference: Salem Engineering Group, Inc. (SALEM), Geotechnical Engineering Investigation Report, Proposed Apartment Complex, 35th Avenue and Gateway Drive, Palm Desert, California, SALEM Project No. 3-208-0025, Dated January 24, 2008 Dear Ms. Reese: In accordance with your request, we have provided this letter to update the above referenced Geotechnical Report for the proposed Apartment Complex to be located at the subject site in Palm Desert, California. In addition, two (2) percolation tests were performed at depths of approximately 4.3 and 8 feet below existing grade at the proposed infiltration basin area for determination of infiltration rate. The locations of the percolation tests are depicted on Figure 1, Site Plan. The subject site is rectangular in shape and encompasses approximately 11.8 acres. The site is located on the southeast corner of Dick Kelly Drive and Gateway Drive in the City of Palm Desert, Riverside County, California. The site is surrounded predominately by commercial and residential developments and vacant land. The site is gently sloping to the northeast with elevations ranging from 261 to 219 feet above mean sea level based on Google Earth imagery. At the time of our field investigation in January 2008, the site was a vacant undeveloped land with sparse vegetation. The site was revisited on November 1, 2021, and the site conditions were found to remain the same as January 2008. Photos of the site from November 1, 2021, are presented below: Project No. 3-221-1146 November 2, 2021 Page No. 2 Looking to the West from NEC of the site Looking to the East from NWC of the site Based on our review of the referenced report and recent site visit, the above mentioned report is considered, from a geotechnical standpoint, to remain valid for the proposed development except the seismic design parameters and subsequent seismic densification analysis needed to be updated. The 2008 report presented seismic design criteria based on the 2007 California Building Code (CBC). Seismic design criteria have now been incorporated into the 2019 California Building Code (CBC) and are applicable as of January 1, 2020. Project No. 3-221-1146 November 2, 2021 Page No. 3 Site Coefficients For seismic design of the structures, and in accordance with the seismic provisions of the 2019 CBC, our recommended parameters are shown below. These parameters were determined using Office of Statewide Health Planning and Development (OSHPD) Seismic Design Maps by location website (https://seismicmaps.org/), in accordance with the 2019 CBC. The Site Class was determined based on the soils encountered during our field exploration. 2019 CBC SEISMIC DESIGN PARAMETERS Seismic Item Symbol Value ASCE 7-16 or 2019 CBC Reference Site Coordinates (Datum = NAD 83) 33.7938 Lat -116.3816 Lon Site Class -- D ASCE 7 Table 20.3-1 Soil Profile Name -- Stiff Soil ASCE 7 Table 20.3-1 Risk Category -- II CBC Table 1604.5 Site Coefficient for PGA FPGA 1.1 ASCE 7 Table 11.8-1 Peak Ground Acceleration (adjusted for Site Class effects) PGAM 0.879 g ASCE 7 Equation 11.8-1 Seismic Design Category SDC E CBC Table 1613.2.5 Mapped Spectral Acceleration (Short period - 0.2 sec) SS 1.843 g CBC Figure 1613.2.1(1-8) Mapped Spectral Acceleration (1.0 sec. period) S1 0.767 g CBC Figure 1613.2.1(1-8) Site Class Modified Site Coefficient Fa 1 CBC Table 1613.2.3(1) Site Class Modified Site Coefficient Fv 1.7* CBC Table 1613.2.3(2) MCE Spectral Response Acceleration (Short period - 0.2 sec) SMS = Fa SS SMS 1.843 g CBC Equation 16-36 MCE Spectral Response Acceleration (1.0 sec. period) SM1 = Fv S1 SM1 1.304 g* CBC Equation 16-37 Design Spectral Response Acceleration SDS=⅔SMS (short period - 0.2 sec) SDS 1.228 g CBC Equation 16-38 Design Spectral Response Acceleration SD1=⅔SM1 (1.0 sec. period) SD1 0.869 g* CBC Equation 16-39 Short Period Transition Period(SD1/SDS), Seconds TS 0.708 ASCE 7-16, Section 11.4.6 Long Period Transition period(seconds) TL 8 ASCE 7-16, Figures 22-14 Note: * Determined per ASCE Table 11.4.-2 for use in calculating TS only Project No. 3-221-1146 November 2, 2021 Page No. 4 Site Specific Ground Motion Analysis was not included in the scope of this update. Per ASCE 11.4.8, Structures on Site Class D, with S1 greater than or equal to 0.2 may require Site Specific Ground Motion Analysis. However, a site specific ground motion analysis may not be required based on Exceptions listed in ASCE 11.4.8. The Structural Engineer should verify whether Exception No. 2 of ASCE 7-16, Section 11.4.8 is valid for the site. In the event a site specific ground motion analysis is required, SALEM should be contacted for these services. Conformance to the criteria in the above table for seismic design does not constitute any kind of guarantee or assurance that significant structural damage or ground failure will not occur if a large earthquake occurs. The primary goal of seismic design is to protect life, not to avoid all damage, since such design may be economically prohibitive. Seismic Densification Analysis A common phenomena during seismic shaking accompanying any earthquake is the induced settlement of loose unconsolidated soils. Based on site subsurface conditions and the high seismicity of the region, any loose granular materials at the site could be vulnerable to this potential hazard. Our analysis of dynamic densification of “dry” soil in the upper 50 feet of existing soil profile was performed. For the analysis, a maximum earthquake magnitude of 8.2 Mw and a peak horizontal ground surface acceleration of 0.879g (with a 2 percent probability of exceedance in 50 years) were considered appropriate for the analysis. The seismic densification of dry to damp alluvial sandy soils due to onsite seismic activity was calculated to have a total settlement of approximately 1.27 inches. Differential settlement is calculated to be on the order of approximately 0.64 inches. The recommendations presented in the 2008 report are considered to be valid for the proposed development of the site. The settlement analysis is attached at the end of this report update. Percolation Testing Two percolation tests (P-1 and P-2) were performed within assumed infiltration areas and were conducted in accordance with in accordance with the guidelines established by the County of Riverside. The approximate locations of the percolation tests are shown on the attached Site Plan, Figure 1. The boreholes were advanced to the depths shown on the percolation test worksheets. The holes were pre- saturated before percolation testing commenced. Percolation rates were measured by filling the test holes with clean water and measuring the water drops at a certain time interval. The percolation rate data are presented in tabular format at the end of this report. The difference in the percolation rates are reflected by the varied type of soil materials at the bottom of the test holes. The test Project No. 3-221-1146 November 2, 2021 Page No. 5 results are shown on the table below. PERCOLATION TEST RESULTS Test No. Depth (feet) Measured Percolation Rate (min/inch) Infiltration Rate* (inch/hour) Soil Type** P-1 8 0.2 23.01 SAND (SP) P-2 4.3 0.3 21.33 SAND (SP) * Tested infiltration Rate = (∆H 60 r) / (∆t(r + 2Havg)), no factor of safety applied **At bottom of test hole. The soil infiltration or percolation rates are based on tests conducted with clear water. The infiltration/percolation rates may vary with time as a result of soil clogging from water impurities. The infiltration/percolation rates will deteriorate over time due to the soil conditions and an appropriate factor of safety (FS) may be applied. The soils may also become less permeable to impermeable if the soil is compacted. Thus, periodic maintenance consisting of clearing the bottom of the drainage system of clogged soils should be expected. The infiltration/percolation rate may become slower if the surrounding soil is wet or saturated due to prolonged rainfalls. Additional percolation tests should be conducted at bottom of the infiltration basin during construction to verify the infiltration/percolation rate. Groundwater, if closer to the bottom of the drainage system, will also reduce the infiltration/percolation rate. Limitations The scope of our services did not include a groundwater study and was limited to the performance of percolation testing and soil profile description, and the submitted data only. Our services did not include those associated with septic system design. Neither did services include an Environmental Site Assessment for the presence or absence of hazardous and/or toxic materials in the soil, groundwater, or atmosphere; or the presence of wetlands. Any statements, or absence of statements, in this report or on any boring logs regarding odors, unusual or suspicious items, or conditions observed, are strictly for descriptive purposes and are not intended to convey engineering judgment regarding potential hazardous and/or toxic assessment. The geotechnical engineering information presented herein is based upon professional interpretation utilizing standard engineering practices. The work conducted through the course of this investigation, including the preparation of this report, has been performed in accordance with the generally accepted standards of geotechnical engineering practice, which existed in the geographic area at the time the report was written. No other warranty, express or implied, is made. Project No. 3-221-1146 November 2, 2021 Page No. 6 Please be advised that when performing percolation testing services in relatively small diameter borings, that the testing may not fully model the actual full scale long term performance of a given site. This is particularly true where percolation test data is to be used in the design of large infiltration system such as may be proposed for the site. The measured percolation rate includes dispersion of the water at the sidewalls of the boring as well as into the underlying soils. Subsurface conditions, including percolation rates, can change over time as fine-grained soils migrate. It is not warranted that such information and interpretation cannot be superseded by future geotechnical engineering developments. We emphasize that this report is valid for the project outlined above and should not be used for any other sites. The recommendations and limitations provided in the Geotechnical Engineering Investigation Report apply to this letter. If you have any questions, or if we may be of further assistance, please do not hesitate to contact our office at (909) 980-6455. Respectfully submitted, SALEM ENGINEERING GROUP, INC. Jared Christiansen, EIT Clarence Jiang, GE Geotechnical Staff Engineer Senior Geotechnical Engineer RGE 2477 Attachments: Site Plan, Figure 1 Seismic Densification Analysis Percolation Test Results, P-1 and P-2 SITE PLAN GEOTECHNICAL ENGINEERING INVESTIGATION Proposed Apartment Complex Dick Kelly Drive & Gateway Drive Palm Desert, California SCALE:DATE: NOT TO SCALE 11/2021 DRAWN BY:APPROVED BY: JC CJ PROJECT NO.FIGURE NO. 3-221-1146 1 LEGEND: Percolation Locations All Locations Approximate P-1 P-2 DRY SETTLEMENT DUE TO EARTHQUAKE SHAKING * Use Fig. 11 of Tokimat Job No.3-221-1146 Job Name Proposed Apartment Complex ** Use Fig. 13 of Tokima Boring No. B-3 Drill Date 01/15/08 *** MSF=102.24/Mw2.56 # CN=2.2/(1.2+σ'o/Pa) User Input Section Earthquake Data Drilling GW Depth (ft)50 Mag. (Mw)8.2 Earthquake GW Depth (ft)50 amax/g 0.879 Rod Stick-Up (ft)3 Lookup Tables MSF*** 0.80 SPT N-Value Correction Factors % Fines ΔN Length Energy Ratio CE 1.60 Notes 0 0 1 0 Borehole Dia.CB 1.05 Notes 10 1 12 0 Sampling Method CS 1.2 Notes 25 2 20 0 Factor of Safety FS 1.0 50 4 30 0 Rod Length CR Calculated 75 5 33 Overburden Press CN Calculated During Drilling During EQ Depth Dry Unit Fines SPT Layer Unit Total σo bottom Total σo mid-pt. Eff. σ'o SPT Fines Corct'd SPT Eff. σ'oeq (ft) USCS Wt (pcf)w (%)%Field N (ft)Wt (pcf) (psf) (psf) (psf) CN #(N1)60 ΔN (N1)60f (psf)σo 2 SP 105 3.1 4 8 2.0 108.3 217 108 108 1.75 21.2 0.0 21.2 108 1 5 SP 105 2.0 4 13 3.0 107.1 538 377 377 1.58 31.1 0.0 31.1 377 1 10 SP 105 0.5 5 32 5.0 105.5 1065 802 802 1.37 75.4 0.0 75.4 802 1 15 SP-SM 105 0.5 8 22 5.0 105.5 1593 1329 1329 1.18 44.5 0.0 44.5 1329 1 20 SP 105 0.6 5 15 5.0 105.6 2121 1857 1857 1.03 29.7 0.0 29.7 1857 1 25 SP 105 0.4 5 29 5.0 105.4 2648 2385 2385 0.92 51.1 0.0 51.1 2385 1 30 SP 105 0.4 5 29 5.0 105.4 3175 2912 2912 0.83 48.4 0.0 48.4 2912 1 35 SP-SM 105 0.4 8 32 5.0 105.4 3703 3439 3439 0.75 48.6 0.0 48.6 3439 1 40 SP-SM 105 0.4 8 32 5.0 105.4 4230 3966 3966 0.69 44.6 0.0 44.6 3966 1 45 SP 105 0.4 3 43 5.0 105.4 4757 4493 4493 0.64 55.3 0.0 55.3 4493 1 50 SP 105 0.4 3 43 5.0 105.4 5284 5020 5020 0.59 51.4 0.0 51.4 5020 1 The total seismic-induced settlement calculation is based on a water table depth of 50 feet below Project: Job No.: Poorly graded SAND (SP)Hole Ra Pipe Test Hole No.:P-1 Presoaking Date:Total Depth of H Tested by: JC Test Date: Drilled Hole Depth: 8.0 ft.Pipe Stic Time Start Time Finish Depth of Test Hole (ft)# Refill- Yes or No Elapsed Time (hrs:min) Initial Water Level# (ft) Final Water Level# (ft) Δ Water Level (in.)Δ Min. Meas. Perc Rate (min/in) Initial Height of Water (in) Fin Heig Wate 10:10 10:35 10.0 Y 0:25 6.00 Empty - 25 - - - 10:37 11:02 10.0 Y 0:25 6.00 Empty - 25 - - - 11:04 11:09 10.0 Y 0:05 6.00 8.73 32.76 5 0.2 48.0 15 11:09 11:14 10.0 N 0:05 8.73 Empty - 5 - - - 11:15 11:20 10.0 Y 0:05 6.00 8.70 32.40 5 0.2 48.0 15 11:20 11:25 10.0 N 0:05 8.70 Empty - 5 - - - 11:26 11:31 10.0 Y 0:05 6.00 8.72 32.64 5 0.2 48.0 15 11:31 11:36 10.0 N 0:05 8.72 Empty - 5 - - - 11:37 11:42 10.0 Y 0:05 6.00 8.71 32.52 5 0.2 48.0 15 11:42 11:47 10.0 N 0:05 8.71 Empty - 5 - - - 11:48 11:53 10.0 Y 0:05 6.00 8.70 32.40 5 0.2 48.0 15 11:53 11:58 10.0 N 0:05 8.70 Empty - 5 - - - 11:59 12:04 10.0 Y 0:05 6.00 8.70 32.40 5 0.2 48.0 15 12:04 12:09 10.0 N 0:05 8.70 Empty - 5 - - - Recommended for Design:Infiltration 11/1/2021 Palm Desert, California Soil Classification: 11/1/2021 11/1/2021 Percolation Test Worksheet Proposed Apartment Complex 3-221-1146 Dick Kelly Drive & Gateway Drive Date Drilled: Project: Job No.: 3-221-1146 Date Drilled: Soil Classification: Poorly graded SAND (SP)Hole Ra Pipe Test Hole No.:P-2 Presoaking Date:Total Depth of H Tested by: JC Test Date: Drilled Hole Depth: 4.3 ft.Pipe Stic Time Start Time Finish Depth of Test Hole (ft)# Refill- Yes or No Elapsed Time (hrs:min) Initial Water Level# (ft) Final Water Level# (ft) Δ Water Level (in.)Δ Min. Meas. Perc Rate (min/in) Initial Height of Water (in) Fin Heig Wate 8:10 8:35 4.8 Y 0:25 3.00 Empty - 25 - - - 8:36 9:01 4.8 Y 0:25 3.00 Empty - 25 - - - 9:02 9:07 4.8 Y 0:05 3.00 4.24 14.88 5 0.3 21.6 6. 9:07 9:12 4.8 N 0:05 3.00 Empty - 5 - - - 9:13 9:18 4.8 Y 0:05 3.00 4.22 14.64 5 0.3 21.6 7. 9:18 9:23 4.8 N 0:05 3.00 Empty - 5 - - - 9:24 9:29 4.8 Y 0:05 3.00 4.23 14.76 5 0.3 21.6 6. 9:29 9:34 4.8 N 0:05 3.00 Empty - 5 - - - 9:35 9:40 4.8 Y 0:05 3.00 4.22 14.64 5 0.3 21.6 7. 9:40 9:45 4.8 N 0:05 3.00 Empty - 5 - - - 9:46 9:51 4.8 Y 0:05 3.00 4.21 14.52 5 0.3 21.6 7. 9:51 9:56 4.8 N 0:05 3.00 Empty - 5 - - - 9:57 10:02 4.8 Y 0:05 3.00 4.22 14.64 5 0.3 21.6 7. 10:02 10:07 4.8 N 0:05 3.00 Empty - 5 - - - Recommended for Design:Infiltration 11/1/2021 Percolation Test Worksheet Proposed Apartment Complex Dick Kelly Drive & Gateway Drive 11/1/2021 Palm Desert, California 11/1/2021                                                         $%&' 5&)&'6<17+(7,&81,7+<'52*5$3+ '$7$,13876+((7 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<($5+28567250(9(17 )/2: 92/80( 727$/,1 3(5& 727$/,1 %$6,1 81,7 PLQ ,1 ,1 %$6,1 287 %$6,1 '(37+ 3(5,2' FIV FXIW FXIW FXIW FXIW IW FXIW DFUHIW 7,0(%$/$1&(,1 %$6,1                                                                                                                                                                                                                                                                                                                                                                                             %DVLQ'HSWK$QDO\VLV 3DJHRI ARCHITECTURAL REVIEW COMMISSION NOTICE OF ACTION April 22, 2022 Urban Housing Communities (UHC) 00357 Palm Desert, 2000 E. 4th Street, Suite 205 Santa Ana, CA 92705 Subject: Consideration to approve a request for a recommendation to the Planning Commission for approval of a Precise Plan, Conditional Use Permit, and a Mitigated Negative Declaration to construct a 176-unit multi-family (affordable housing) residential community consisting of four (4) three-story apartment buildings, five (5) two-story apartment buildings, a single-story clubhouse, pool area, and private outdoor recreation areas on an 11-acre parcel located at the southeast corner of Gateway Drive and Dick Kelly Drive and west of Cortesia Way. The Architectural Review Commission of the City of Palm Desert considered your request and took the following action at its meeting of April 12, 2022: By Minute Motion, the Architectural Review Commission approved Case No. PP/CUP22-0002 subject to the following: 1) Explore options for thickening base element an additional 2 inches using band accent as a cap element on base; 2) Windows should be attached to 2x4 nailers to allow a minimum of 2-inch recesses (not including the trim), upper-level windows should be recessed as well; and 3) Project revisions will be reviewed by staff and return to the ARC should there be any items that cannot be resolved with Applicant. The motion carried by a 4-0 vote. (AYES: Lambell, Latkovic, McIntosh, and Vuksic; NOES: None; ABSENT: McAuliffe, Van Vliet). Any appeal of the above action may be made in writing to the City Clerk of the City of Palm Desert within 15 days of the date of the decision. If you have any questions, please contact Associate Planner, Kevin Swartz, at (760) 346-0611, Extension 485 or kswartz@cityofpalmdesert.org. Sincerely, ROSIE LUA, SECRETARY ARCHITECTURAL REVIEW COMMISSION cc: File y CITY OF PALM DESERT PUBLIC HEARING NOTICE CASE NO. PP/CUP22-0002 NOTICE OF A PUBLIC HEARING BEFORE THE CITY OF PALM DESERT PLANNING COMMISSION FOR CONSIDERATION OF A PRECISE PLAN, CONDITIONAL USE PERMIT, AND A MITIGATED NEGATIVE DECLARATION TO CONSTRUCT A 176-UNITS MULTI- FAMILY (AFFORDABLE HOUSING) RESIDENTIAL COMMUNITY ON A 11-ACRE PARCEL LOCATED AT THE SOUTHEAST CORNER OF GATEWAY DRIVE AND DICK KELLY DRIVE AND WEST OF CORTESIA WAY. The City of Palm Desert (City), in its capacity as the Lead Agency for this project under the California Environmental Quality Act (CEQA), has determined that any potentially significant impacts can be mitigated to a less than significant level and a Mitigated Negative Declaration has been prepared for this project. Project Location/Description: Project Location: APNs: 694-130-017 to 020 Project Description: The proposal for a new 176-unit affordable apartment development consisting of four (4) three-story apartment buildings, five (5) two-story apartment buildings, a single-story clubhouse, pool area, and private outdoor recreation areas on an 11-acre parcel. Recommendation: Staff is recommending that the Planning Commission adopt a Resolution of the project request, subject to the conditions of approval. Public Hearing: The public hearing will be held before the Planning Commission on Tuesday, July 5, 2022, at 6:00 p.m. via Zoom. The hearing will be conducted in accordance with the City’s emergency protocols for social distancing. Options for remote participation will be listed on the Posted Agenda for the meeting at: https://www.cityofpalmdesert.org/our-city/committees-and- commissions/planning-commission-information-center. Comment Period: The public comment period for this project is from June 25, 2022, to July 5, 2022. Public Review: The plans and related documents are available for public review Monday through Thursday from 8:00 a.m. to 5:00 p.m. by contacting the project planner, Kevin Swartz. Please submit written comments to the Planning Division. If any group challenges the action in court, issues raised may be limited to only those issues raised at the public hearing described in this notice or in written correspondence at or prior to the Planning Commission hearing. All comments and any questions should be directed to: Kevin Swartz, Associate Planner City of Palm Desert 73-510 Fred Waring Drive Palm Desert, CA 92260 (760) 346-0611, Extension 485 kswartz@cityofpalmdesert.org PUBLISH: DESERT SUN MARTIN ALVAREZ, SECRETARY 30'-0" A GATEWAY DRIVE2-Story Building Type VB Construction Vehicular Gate Secondary Project Entry G G G G G G G G Building Key Plan N.T.S. 1 4 3 G G G G G G G G G G G G Building Key Plan N.T.S. 1 4 3 Building Key Plan N.T.S. Building Key Plan N.T.S.Building Key Plan N.T.S.1 4 3 71'-9 1/2"1st Floor Un P1 Unit P2-1 Unit P3-1 Unit P3-1 71'-9 1/2"1st Floor Unit P2-1 Unit P3-1 Unit P3-1 Jan. Cl t Ma Laundry Room Game Room 3. Rear Elevation LEASING & AMENITY BUILDING 48 ' - 0 " ( C P E T )48'-0" (CPET) 1st Floor Unit P3-1 6 Occ. Unit P3-1 6 Occ. 45'-9" (CPET)42'-1" (CPET)48 ' - 0 " ( C P E T )48'-0" (CPET)EXIT 3EXIT 6 EXIT 5 EXIT 20 EXIT 6 FIRE AREA 1 1st Floor Unit P3-1 6 Occ. Unit P3-1 6 Occ.Unit P2-1 5 Occ. Unit 3 O Game Ro 185sf / 15sf pe = 13 Occup Laundry Room 265sf / 15sf per Occu. = 18 Occupants Jan. Closet EX 1 EXIT 18 ************************************ ********& & $ $ % % $ $ $% % % % % $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ ********% $% $ $ $ $ $ $$ %% % % % & $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $ $ $ $ % % %% $ % $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% ;),/,1*&$%,1(7;5(7851'(6. ; '(6. ; 5(7851'(6. ;'(6. ;5(7851'(6. ;'(6.6+8))/(%2$5'/,9(0(',$/,9(0(',$&2817(50,&52:$9(5()':;),/(35,17(5&$%,1(76+(/9(6 6+(/9(6 6+(/9(6 Page 1 of 9 CITY OF PALM DESERT STAFF REPORT MEETING DATE: July 5, 2022 PREPARED BY: Nick Melloni, Associate Planner REQUEST: CONSIDERATION TO ADOPT A RESOLUTION UNDER THE CALIFORNIA ENVIRONMENTAL QUALITY ACT (CEQA) AND APPROVAL OF A PRECISE PLAN (PP) FOR MODIFICATIONS TO THE LIVING DESERT ZOO AND GARDENS, INCLUDING EXPANDING THE EXISTING ON-SITE PARKING, CONSTRUCTION OF A SINGLE-STORY FACILITIES BUILDING, TWO (2) SINGLE-STORY STORAGE BUILDINGS, A PRIVATE DRIVE AISLE FOR STAFF, AND MODIFICATIONS OF THE EXISTING MEDIAN ON PORTOLA AVENUE FOR A NEW DRIVEWAY ENTRY AT 47900 PORTOLA AVENUE. RECOMMENDATION: Waive further reading and adopt Planning Commission Resolution No. 2815: 1. Adopting a Notice of Exemption under the CEQA; and 2. Approving the applicant’s request to expand the existing on-site parking, construct a single-story facilities building, two single-story storage buildings, a private drive aisle for staff, and modify the existing median on Portola Avenue for a new driveway entry located at 47900 Portola Avenue, subject to the findings and Conditions of Approval. ARCHITECTURAL REVIEW COMMISSION RECOMMENDATION: The Architectural Review Commission (ARC) reviewed the proposed project, including architecture and landscaping, at their regular meeting on February 8, 2022. The ARC was supportive and complimentary of the design quality of the project, particularly the facilities building for incorporating a quality exterior material palette and varied building massing. The ARC recommended approval of the project by a 5-0 vote, with Commissioner Vuksic absent (Attachment No. 3), as presented, with no added conditions of approval. EXECUTIVE SUMMARY: Approval of staff’s recommendation will adopt a resolution approving the project that consists of a PP and Environmental Assessment (EA) for modifications to the existing The Living Desert Zoo and Gardens. The project scope will improve a 3.6-acre portion of an 18.4-acre parcel within the Living Desert Zoo and Gardens at 47900 Portola Avenue. The project scope of work includes: x Expansion of the existing public parking lot (675 existing spaces) by adding 179 new public spaces (854 total parking spaces). x Construction of a new private parking lot (49 spaces) for staff. x Construction of a 10,356-square-foot single-story facilities building. x Construction of two single-story storage buildings at 2,943 square feet and 1,633 square feet totaling, 4,576 square feet. City of Palm Desert Case No. PP22-0001 The Living Desert Expansion Page 2 of 9 x Construction of a new gated staff and delivery driveway entry access on Portola Avenue, approximately 180 feet north of Reserve Drive. x Modification of the existing median on Portola Avenue to accommodate access for the proposed staff and delivery driveway by providing a left-hand turn lane on the southbound of Portola Avenue. The project has been reviewed by staff for conformance with the applicable Public Institutional (P) zoning designation and is deemed consistent with zoning requirements. The project is consistent with the Public Facilities/Institutional General Plan Land Use Designation. Staff has determined the project is exempt from CEQA under CEQA Guidelines Section 15332 as a Class 32 In-fill exemption. BACKGROUND/ANALYSIS: A.Property Description:The project is located within the Living Desert Zoo and Gardens, a non- profit zoo and desert botanical garden occupying approximately 77 acres located east of Portola Avenue south of Haystack Road within the City of Palm Desert and City of Indian Wells. Approximately 32.74-acres of the facility are located within Palm Desert city limits. The project site is a 3.6-acre portion of an 18.4-acre parcel (Assessor Parcel Number 655-230- 019) located in the southerly portion of the facility, directly east of Portola Avenue and west of the City boundary with Indian Wells. The portions of the site proposed for the project are located along the southernmost portion of the site and are improved with existing portable buildings and unpaved private roadways, which are used for zoo operations and not accessible by the public. Figure 1 - An aerial photo showing the project site (in red) and existing conditions City of Palm Desert Case No. PP22-0001 The Living Desert Expansion Page 3 of 9 B. Current Zoning & General Plan Land Use Designation: Zone: P – Public/Institutional General Plan: Public Facility/Institutional C. Adjacent Zoning & Land Use: North: PR-3/Planned Residential–Marrakesh Country Club and City of Indian Wells South: PR-7/Planned Residential–The Reserve East: City of Indian Wells/Public Facilities Zoning–CVWD Water Tanks West: PR-3/PR-7/Planned Residential–Corsican Villas/Ironwood Heights Project Description: The project is a PP to improve a 3.6-acre portion of the site located at the southerly end of the property. The changes include: 1. Expansion of the existing public parking lot: The public lot currently features 675 existing standard spaces. The expansion will have 179 new standard public spaces bringing the new parking total to 854 standard spaces. The expanded parking area will occur at the south-western portion of the site as depicted on Sheet A002 of the project plan set. Existing portable buildings located in an unpaved area will be removed and replaced by additional parking and landscaping. The expanded parking lot surface will be paved with brick pavers to match the existing parking areas. New landscape trees will be planted to provide vehicle shading and match existing landscaping. In addition to the 179 new public parking spaces, the project will add 49 new parking spaces for exclusive use by Zoo staff. 2. Construction of a new staff and delivery driveway on Portola Avenue: The project will construct a new staff-only entry point near the southern project boundary by constructing a new driveway on Portola Avenue. The new driveway will be located approximately 180 feet north of Reserve Drive and is intended to separate staff access, deliveries, and parking from the public parking areas. The new access includes a gate access with approximately 100 feet of stacking distance for vehicles and trucks. The new drive aisle will also accommodate new vehicle turnarounds for the fire department. 3. Portola Avenue median improvements: To accommodate the new drive entry, the applicant will modify the existing median on Portola Avenue by: A. Providing a left-hand turn pocket within the median on southbound Portola Avenue to provide site access. B. Lengthen the northbound Portola Avenue left-hand turn lane onto Buckboard Trail. C. Shorten the southbound Portola Avenue left-hand turn lane onto Reserve Drive to expand the existing median to prevent left-turn movements and U-turns for vehicles exiting the new turn lane. 4. Administrative Facilities Building: The construction of a 10,436-square-foot, single-story administrative facilities building. The building will have a maximum height of 17 feet and 6 inches (17’6”). The floor plan features offices, conference room areas, and staff workspaces. The building will be located approximately 1,000 feet away from Portola Avenue in a rear area of the site, which is inaccessible to the public and will require the demolition of an existing garden center. City of Palm Desert Case No. PP22-0001 The Living Desert Expansion Page 4 of 9 5. Storage Buildings: The construction of two single-story storage buildings located on the north side of the new drive-aisle within the project site. The buildings will be 2,943 square feet and 1,633 square feet, for a total area of 4,576 square feet. The maximum height of the storage buildings will be 17 feet (17’). The south elevations of the buildings will face the internal driveway and feature roll-up doors for storage. The north elevation will face the public architecture feature decorative architecture, including pop-outs and desert wildlife-themed silhouettes. A.Site Plan:The site plan is designed with the goal of physically and visually separating staff areas from publicly accessible parking areas. Staff areas will be separated by a combination of building walls, retaining walls, landscaping, and landscaped berms. Figure 2 – Project Site Map Access and Circulation The site is currently developed with two access points on Portola Avenue. One is centrally located and provides access to both the public and staff. The second is private gated access located at the intersection of Portola Avenue and Haystack Road. An additional private service access road is available from Reserve Drive. The project will add a third vehicle access point at the south end of the site for staff and deliveries. The access will be gated and not accessible to the public. The entry point and private drive-aisles are designed to provide adequate circulation for maneuvering large vehicles. An emergency access connection will be constructed to provide access to the public parking area. The proposed expansion of the public parking lot is designed as an extension of the existing parking lot. The new parking lot will provide a seamless transition from the existing one by providing continuous drive aisles with rows of perpendicular parking spaces. The lot is designed to provide access and maneuvering for emergency vehicles. City of Palm Desert Case No. PP22-0001 The Living Desert Expansion Page 5 of 9 B. Architecture: The proposal will construct three new buildings for zoo operations. The architecture of the proposed buildings is desert contemporary and matches the vernacular and materiality of newer buildings in the park, such as the primary park entrance constructed in 2018. Both buildings are characterized by the use of earth tone colors and materials consisting of corrugated metal panels, stucco, and stone and tile veneer for the facilities building. The storage buildings feature a standing seam shed roof, punctuated by a flat roof area with a continuous parapet to screen rooftop equipment. The roll-up doors are located on the south elevation for storage functionality. The north elevation features enhanced architecture framed by a furred stucco wall to create relief and variation in the building plane where the building is visible from the public parking lot. The administrative facilities building is characterized by a strong horizontal primary mass, which is broken up with the use of orthogonal forms and terraced flat roofs with varying heights as well as variation in building plane and texture. The architecture uses deeply recessed windows in combination with the horizontal forms to create relief in the massing and add shade over windows. Additionally, the use of different building materials, such as alternating vertical and horizontal corrugated panels and stone veneers, add to the variation in textures and visual interest to the building exterior. Parking The project will add 179 standard parking spaces to the existing public parking lot, increasing the total number of on-site standard parking spaces to 854. The existing parking also provides for 20 ADA spaces and 14 bus-sized parking spaces. Additionally, 49 staff parking spaces will be added to the site. C. Landscape: The preliminary landscape plan shows extensive use of desert native plantings throughout the expanded parking lot areas and along the peripheries of the site. Extensive shade trees are proposed throughout the parking areas to create shade for vehicles. The tree palette includes Desert Willow, Chilean Mesquite, Palo Verde, Cascalote, and Anacahuita. This palette is consistent with trees within the existing parking area and is compatible with landscaping found throughout the site. A row of closely spaced shade trees adjoins the western and southern perimeters of the parking area to create a visual separation between public and staff areas. Additionally, the landscape plan shows desert native shrubs and accent plantings in areas adjacent to the proposed staff buildings. Analysis: The project site is designated Public Facility/Institutional by the Palm Desert General Plan Land Use Element (see Page 33 of the Palm Desert General Plan). The PF/I designation is intended to provide for government buildings and school facilities, including civic centers, libraries, community centers, senior centers, fire stations, corporate yards, universities, and similar uses. The physical character of uses within this designation is determined on a case-by-case basis, dependent upon the nature of the use. The project site is zoned Public Institution (P) and subject to the development standards established under Palm Desert Municipal Code (PDMC) Chapter 25.22 – Special Districts. The addition of parking and new administrative buildings are ancillary to the primary use and permitted subject to the approval of a PP by the Planning Commission under PDMC Chapter 25.72. City of Palm Desert Case No. PP22-0001 The Living Desert Expansion Page 6 of 9 Land Use Compatibility The project is consistent with the Palm Desert General Plan goals and policies of the Land Use Element, therefore, falls within the allowable intensity established for the PF/I land use designation. The General Plan does not specify the intended physical character for uses within the PF/I designation, as these are determined on a case-by-case basis. The proposed additional structures are consistent with the scale of development within the existing The Living Desert Zoo and Gardens and maintain extensive building setbacks to provide for desert landscaping and open areas. The proposed project is consistent with the Goals and Policies of the General Plan, as demonstrated below: Land Use Element: Policy 1.1 Scale of development. Require new development along the City’s corridors using design techniques to a moderate height and use and ensure compatible fit with surrounding development. The project proposes to construct additional staff buildings to support park operations. The design of these buildings features single-story architecture and are provided significant setbacks from the western and southern boundaries of the site to ensure compatibility with surrounding developments, which primarily consist of single-story, single-family residential development. The location of the buildings is also screened from view through the use of earthen berms and desert native landscaping. Goal 4. Districts. A series of unique, destination-oriented districts that provide space for large-format retail, industrial, and resort uses in order to increase access to jobs, provide amenities for residents and enhance the fiscal stability of the City. The project will expand existing parking and administrative buildings to facilitate and enhance existing operations of The Living Desert Zoo and Botanical Garden, which supports tourism in the greater Coachella Valley area by providing regional amenities drawing between 460,000 to 489,00 visitors per year (source The Living Desert Master Plan Initial Study – April 2016). Additionally, the design of the proposed improvements utilizes finishes, landscaping, and design vernacular to match the existing facility to maintain a high-quality environment consistent with the unique identity of the existing facility. Development Standards The project is subject to the development standards set forth by the PDCM under Section 25.22.040. The table shown in Figure 3 Project Conformance Determination summarizes the projects conformance with the applicable standards of the P zoning designation. As demonstrated, the project conforms with all applicable development standards. City of Palm Desert Case No. PP22-0001 The Living Desert Expansion Page 7 of 9 Figure 3 - Project Conformance Determination STANDARD P ZONE PROJECT CONFORMS Height 35’-0” 17’-0” (Storage Building) 17`’-6” (Facilities Building) Yes Front Setback - 293’-5”+ (Storage Building) 930’-8”+ (Facilities Building) N/A Rear Setback - 537’-9”+ (Storage Building) 38’-9”+ (Facilities Building) N/A Interior Side Setback - 32’-6”+ (Storage Building) 64’-8”+ (Facilities Building) N/A Street Side Setback - - N/A Parking 47 spaces 1/1000 (Storage) 1/250 (Office) 49 private spaces Yes Parking: Section 25.46.040 Parking Requirements of the PDMC establishes minimum vehicle parking space requirements for new buildings and uses. The project proposes to construct new buildings for administrative facilities and storage. The facilities building will be used for administrative office functions, which will require an additional 42 parking spaces based on a floor area of 10,493 square feet and a parking rate of one space per 250 feet of building floor area. The storage buildings will require an additional five (5) parking spaces based on a floor area of 4,576 square feet and a parking rate of one space per 1,000 feet of building floor area. The project proposes to construct 49 new standard parking spaces to support the new buildings and therefore satisfy the applicable parking requirements. The applicant is also proposing 32 golf cart parking spaces. No expansions are proposed to existing facility exhibits or programming under this project approval. Parking requirements for the existing facilities were evaluated with The Living Desert’s Master Plan approval of PP/CUP 15-370 with Planning Commission Resolution No. 2680. The Initial Study/Mitigated Negative Declaration prepared for the Master Plan identified that the proposed facility expansions would require a minimum of 690 parking spaces. The existing public parking lot provides approximately 695 spaces and complies with the parking rate approved by the City. The addition of 179 public spaces will increase the total to 874 public parking spaces, further increasing the surplus availability of onsite parking. Future expansions of the facility, including expansion of buildings beyond the scope of the approved master plan, will require evaluation of further impacts on parking and traffic. As proposed, the project complies with parking requirements. Public Input: Public Notification: Public noticing was conducted for the July 5, 2022, Planning Commission meeting under PDMC Section 25.60.060. A public hearing notice was published on Friday, Jun 24, 2022, in The Desert Sun. Additionally, notices were mailed to all property owners within 1,000 feet of the project site for a total of 280 public hearing notices. City of Palm Desert Case No. PP22-0001 The Living Desert Expansion Page 8 of 9 Staff has not received comments in favor or opposition to the project. Several residents that received the notice contacted the Palm Desert Planning Division with questions regarding the extent of the project scope. Environment Review: Staff recommends that the Planning Commission find that the project is exempt from CEQA per Section 15332 of the CEQA guidelines as the project is a Class 32 Exemption for “In-fill” development. Class 32 is intended for projects characterized as in-fill developments meeting the conditions described below: 1) The project is consistent with the applicable General Plan designation and all applicable General Plan policies. As analyzed, the project includes an additional 15,000 square feet of commercial building area, which will replace existing portable building structures. The proposed project meets the development standards within the P zoning designation. 2) The project occurs within a 3.6-acre portion of the project site, which is less than five (5) acres specified in the criteria of the Class 32 exemption and is substantially surrounded by urban uses. 3) The site has no value as a habitat for endangered, rare, or threatened species. The site has been previously graded and is occupied by existing portable building structures and a greenhouse. The site is not identified as suitable as a habitat for endangered species in the Coachella Valley Multi-Species Habitat Conservation Plan (MSHCP). 4) Approval of the project would not result in any significant effects relating to traffic, noise, air quality, or water quality. The proposed use will not result in significant noise that will violate the City’s Noise Ordinance. In addition, the City Engineer has reviewed the proposed use and the existing infrastructure, including the off-site improvements, and staff finds the use will not have a significant effect on traffic. In addition, a preliminary grading plan and hydrology report have been submitted for review, and final approval will commence as part of the conditions of approval herein. No other significant noise or air quality effects were identified for the project. 5) The site can be adequately served by all required utilities and public services. The proposed project has been reviewed by various utility agencies and public services, including Southern California Edison, the Coachella Valley Water District, and Burrtec Waste Management. These agencies have not identified that utilities in the area are insufficient to serve the proposed office building and parking area. Additionally, the project is not subject to any of the exceptions for categorical exemptions identified in CEQA Guidelines Section 15300.2: 1) The project qualifies as a Class 32 exemption, which is not listed as one of the classes under 15300.2 (A). The project is not located on a site where it may have an adverse impact on an environmental resource of hazardous or critical concern where designated, precisely mapped, and officially adopted pursuant to law by federal, state, or local agencies. The project site will not impact designated environmental or biological resources as it is not City of Palm Desert Case No. PP22-0001 The Living Desert Expansion Page 9 of 9 located within a conservation area as identified by the Coachella Valley Multiple Species Habitat Conservation Plan. 2) The project will not have a cumulative impact on the environment. The proposal does not conflict with additional impacts in terms of traffic generation in addition to the existing facility. The proposal will expand existing parking areas and construct new admin and storage buildings, which will replace existing portable buildings used for the same functions. 3) There are no unusual circumstances on the project site. The project site is not located within a flood zone per the latest FEMA Flood Zone Maps. The project site is located within an Urban area per Fire Hazard Severity Zone maps available from the Riverside County Fire Department and depicted in Figure 8.5 on Page 119 of the General Plan. The project site is not identified within an Alquist-Priolo Fault Zone per the latest maps on file with the California Department of Conservation; the nearest fault zone is adjacent to the Indio Hills area north of the Palm Desert city limits. 4) The project site is not located in proximity to any scenic highway. The nearest officially designated scenic highway is Highway 74, located outside of the Palm Desert city limits approximately 2.8 miles to the southwest of the project site. 5) The project site is identified as a historic waste site on any list compiled per Section 65962.5 of the Government Code. 6) The project site does not contain any existing designated historic resource and is not within a designated historic preservation district. The site has been previously surveyed and not identified as containing any existing historic resources. Findings of Approval: Findings can be made in support of the project under the City’s Municipal Code. Findings in support of this project are contained in Planning Commission Resolution No. 2815 attached to this staff report. REVIEWED BY: Department Director: Martin Alvarez Deputy Director: RRichard Cannone, AICP City Attorney: N/A Finance Director: N/A Assistant City Manager: N/A City Manager: N/A ATTACHMENTS: 1. Draft Planning Commission Resolution No. 2815 2. Public Hearing Notice 3. ARC Notice of Action and Minutes of February 8, 2022 4. CEQA Notice of Exemption 5. Project Plans PLANNING COMMISSION RESOLUTION NO. 2815 A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF PALM DESERT, CALIFORNIA, ADOPTING A NOTICE OF EXEMPTION UNDER THE CALIFORNIA ENVIRONMENTAL QUALITY ACT (CEQA) AND APPROVING A PRECISE PLAN (PP) FOR MODIFICATIONS TO THE LIVING DESERT ZOO AND GARDENS, INCLUDING EXPANDING EXISTING ON-SITE PARKING, CONSTRUCTION OF A SINGLE-STORY FACILITIES BUILDING, TWO (2) SINGLE-STORY STORAGE BUILDINGS, A PRIVATE DRIVE AISLE FOR STAFF, AND MODIFICATIONS OF THE EXISTING MEDIAN ON PORTOLA AVENUE FOR A NEW DRIVEWAY ENTRY AT 47900 PORTOLA AVENUE CASE NO. PP22-0001 WHEREAS, PVG Architects (“Applicant”) submitted a PP application for modifications to The Living Desert Zoo and Gardens, including expanding the existing on-site parking, construction of a single-story facilities building, two (2) single-story storage buildings, a private drive aisle for staff, and modifications of the existing median on Portola Avenue for a new driveway entry at 47900 Portola Avenue (“Project”); and WHEREAS, the Architectural Review Commission (ARC) of the City of Palm Desert, California, did on the 8th day of February 2022, consider the Project at its meeting and recommended approval to the Planning Commission; and WHEREAS, the proposed Project is consistent with the development density and use characteristics considered by the Palm Desert General Plan in the Public Facility/Institutional District land use designation; and WHEREAS, the proposed Project conforms to the General Plan land use designation of Public Facility/Institution and development standards listed in the City’s Zoning Ordinance for the Public Institution (P) zoning district; and WHEREAS,under Section 21067 of the Public Resources Code, Section 15367 of the State CEQA Guidelines (Cal. Code Regs., tit. 14, § 15000 et seq.), and the City of Palm Desert’s (“City’s”) Local CEQA Guidelines, the City is the lead agency for the proposed Project; and WHEREAS,said application has complied with the requirements of the "City of Palm Desert Procedure for Implementation of CEQA” Resolution No. 2019-41, in that the Director of Development Services has determined that the project will not have a significant impact on the environment and that the project is categorically exempt under Article 19, Section 15332 In-fill Development (Class 32) of the CEQA Guidelines, as outlined in the staff report and the project is not subject to any of the exceptions for categorical exemptions identified in CEQA Guidelines Section 15300.2; therefore, no further environmental review is necessary; and WHEREAS, the Planning Commission of the City of Palm Desert, California, did on the 5th day of July 2022, hold a duly noticed public hearing to consider the request by PVG Architects, the Applicant, for approval of the above-noted Project request; and PLANNING COMMISSION RESOLUTION NO. 2815 2 WHEREAS, at the said public hearing, upon hearing and considering all testimony and arguments, if any, of all interested persons desiring to be heard, the Planning Commission did find the following facts and reasons, which are outlined in the staff report, exist to justify approval of said request: NOW, THEREFORE, BE IT RESOLVED BY THE PLANNING COMMISSION OF THE CITY OF PALM DESERT, CALIFORNIA, AS FOLLOWS: SECTION 1. Recitals. The Planning Commission hereby finds that the foregoing recitals are true and correct and are incorporated herein as substantive findings of this Resolution. The Planning Commission finds that the project is exempt from CEQA per Section 15332 of the CEQA guidelines as the project is a Class 32 Exemption for “In-fill” development. Class 32 is intended for projects characterized as in-fill developments meeting the conditions described below: 1) The Project is consistent with the applicable General Plan land use designation and all applicable General Plan policies. As analyzed, the project includes an additional 15,000 square feet of commercial building area, which will replace existing portable building structures. The project meets the development standards within the P zoning designation. 2) The Project disturbs a 3.6-acre portion of the project site, which is less than five (5) acres specified in the criteria of the Class 32 exemption and is substantially surrounded by urban uses. 3) The site has no value as a habitat for endangered, rare, or threatened species. The site has been previously graded and is occupied by existing portable building structures and a greenhouse. The site is not identified as suitable as a habitat for endangered species in the Coachella Valley Multi-Species Habitat Conservation Plan (MSHCP). 4) The Project would not result in any significant effects relating to traffic, noise, air quality, or water quality. The proposed use will not result in significant noise that will violate the City’s Noise Ordinance. The City Engineer has reviewed the proposed use and the existing infrastructure, including the off-site improvements, and staff finds the use will not have a significant effect on traffic. In addition, a preliminary grading plan and hydrology report have been submitted for review, and final approval will commence as part of the conditions of approval herein. No other significant noise or air quality effects were identified for the project. 5) The site can be adequately served by all required utilities and public services. The proposed project has been reviewed by various utility agencies and public services, including Southern California Edison, the Coachella Valley Water District, and Burrtec Waste Management. These agencies have not identified that utilities in the area are insufficient to serve the proposed office building and parking area. PLANNING COMMISSION RESOLUTION NO. 2815 3 Additionally, the Project is not subject to any of the exceptions for categorical exemptions identified in CEQA Guidelines Section 15300.2: 1) The Project qualifies as a Class 32 exemption, which is not listed as one of the classes under 15300.2 (A). The Project is not located on a site where it may have an adverse impact on an environmental resource of hazardous or critical concern where designated, precisely mapped, and officially adopted pursuant to law by federal, state, or local agencies. The Project site will not impact designated environmental or biological resources as it is not located within a conservation area as identified by the Coachella Valley Multiple Species Habitat Conservation Plan. 2) The Project will not have a cumulative impact on the environment. The proposal does not conflict with additional impacts in terms of traffic generation in addition to the existing zoo facility. The proposal will expand existing parking areas and construct new admin and storage buildings that replace existing portable buildings used for the same functions. 3) There are no unusual circumstances on the Project site. The Project site is not located within a flood zone per the latest FEMA Flood Zone Maps. The Project site is located within an Urban area per Fire Hazard Severity Zone maps available from the Riverside County Fire Department and depicted in Figure 8.5 on Page 119 of the General Plan. The Project site is not identified within an Alquist-Priolo Fault Zone per the latest maps on file with the California Department of Conservation; the nearest fault zone is adjacent to the Indio Hills area north of the Palm Desert City Limits. 4) The Project site is not located in proximity to any scenic highway. The nearest officially designated scenic highway is Highway 74, located outside of the Palm Desert city limits approximately 2.8 miles to the southwest of the Project site. 5) The Project site is identified as a historic waste site on any list compiled per Section 65962.5 of the Government Code. 6) The Project site does not contain any existing designated historic resource and is not within a designated historic preservation district. SECTION 2.Project Recommendations. The Planning Commission hereby recommends approval of PP 22-0001, subject to Conditions of Approval attached as “Exhibit A.” SECTION 3. Custodian of Records. The documents and materials that constitute the record of proceedings on which these findings are based are located at the City’s office at 73510 Fred Waring Drive, Palm Desert, CA 92260. Martin Alvarez, the Secretary to the Palm Desert Planning Commission, is the custodian of the record of proceedings. SECTION 4. Execution of Resolution. The Chairperson of the Planning Commission signs this Resolution and the Secretary to the Commission shall attest and certify to the passage and adoption thereof. PLANNING COMMISSION RESOLUTION NO. 2815 4 NOW, THEREFORE, BE IT RESOLVED BY THE PLANNING COMMISSION OF THE CITY OF PALM DESERT, CALIFORNIA, AS FOLLOWS: 1. That the above recitations are true and correct and constitute the findings for approval of the Planning Commission in this case. 2. That the Planning Commission does hereby recommend approval to the City Council of Case No. PP22-0001. PASSED, APPROVED, AND ADOPTED by the Planning Commission of the City of Palm Desert, California, at its regular meeting held on the 5th day of July 2022, by the following vote, to wit: AYES: NOES: ABSENT: ABSTAIN: CHAIR ATTEST: MARTIN ALVARES, SECRETARY PALM DESERT PLANNING COMMISSION PLANNING COMMISSION RESOLUTION NO. 2815 5 EXHIBIT “A” CONDITIONS OF APPROVAL CASE NO. PP 22-0001 PLANNING DIVISION: 1. The development of the property shall conform substantially with the approved exhibits contained in PP22-0001 on file in Development Services Department, as modified by the following conditions. 2. The applicant agrees that in the event of any administrative, legal, or equitable action instituted by a third party challenging the validity of any of the procedures leading to the adoption of these Project Approvals for the Project, or the Project Approvals themselves, The developer and City each shall have the right, in their sole discretion, to elect whether or not to defend such action. developer, at its sole expense, shall defend, indemnify, and hold harmless the City (including its agents, officers, and employees) from any such action, claim, or proceeding with counsel chosen by the City, subject to the developer’s approval of counsel, which shall not be unreasonably denied, and at the developer’s sole expense. If the City is aware of such an action or proceeding, it shall promptly notify the developer and cooperate in the defense. Developer upon such notification, shall deposit with City sufficient funds in the judgment of the City Finance Director to cover the expense of defending such action without any offset or claim against said deposit to assure that the City expends no City funds. If both Parties elect to defend, the Parties hereby agree to affirmatively cooperate in defending said action and to execute a joint defense and confidentiality agreement in order to share and protect the information under the joint defense privilege recognized under applicable law. As part of the cooperation in defending an action, City and developer shall coordinate their defense in order to make the most efficient use of legal counsel and to share and protect information. Developer and City shall each have sole discretion to terminate its defense at any time. The City shall not settle any third-party litigation of Project approvals without the developer’s consent, which consent shall not be unreasonably withheld, conditioned, or delayed unless the developer materially breaches this indemnification requirement. 3. The development of the property described herein shall be subject to the restrictions and limitations set forth herein, which are in addition to the approved development standards listed in the PDMC, and state and federal statutes now in force, or which hereafter may be in force. 4. The PP shall expire if construction of the said project shall not commence within two years from the date of final approval unless an extension of time is granted by the Palm Desert Planning Commission; otherwise, said approval shall become null, void, and of no effect whatsoever. 5. The approved Precise Plan may only be modified with City approval under Palm Desert Municipal Code (PDMC) Chapter 25.72.030. PLANNING COMMISSION RESOLUTION NO. 2815 6 6. All construction documentation shall be coordi nated for consistency, including, but not limited to, architectural, structural, mechanical, electrical, plumbing, landscape and irrigation, grading, and street improvement plans. All such plans shall be consistent with the approved entitlement plans on file with the Development Services Department. 7. The Applicant shall execute a written acknowledgment to the Planning Division stating acceptance of and compliance with all the Conditions of Approval of Resolution No. 2815 for PP22-0001 and that the plans submitted are in compliance with the Conditions of Approval. No modifications shall be made to said plans without written approval from the appropriate decision-making body. 8. Construction of said project shall commence within two years from the date of final approval unless an extension of time is granted; otherwise, said approval shall become null, void, and of no effect whatsoever. 9. Prior to the issuance of a building permit for construction of any use or structure contemplated by this approval, the Applicant shall first obtain permits and or clearance from the following agencies: x City Engineer x Coachella Valley Water District (CVWD) x Public Works Department x Fire Marshal x City of Indian Wells Evidence of said permit or clearance from the above agencies shall be presented to the Building & Safety Division at the time of issuance of a building permit for the use contemplated herewith. 10. This project is subject to payment of the City’s Art in Public Places fund underPDMC Section 4.10 (Ordinance 673 and 732). The fee will be applied at the time of a building permit issuance and shall remain in the City’s public art fund. 11. Final lighting plans shall be submitted in accordance with PDMC Section 24.16 for any landscape, architectural, street, or other lighting types within the project area. 12. All exterior lighting sources shall be fully shielded and directed downwards and is subject to approval by the Palm Desert Development Services Department. Luminaries with total lamp lumens above sixteen thousand lumens shall not be used. 13. Access to trash/service areas shall be placed so as not to conflict with parking areas. Said placement shall be approved by the applicable waste company and Department of Development Services and shall include a recycling program. 14. Prior to the issuance of a building permit, the Applicant shall submit a final landscape plan and application for all private on-site landscaping, modified landscaping for the Portola Avenue medians, and a parkway along Portola Avenue frontage between the existing main entrance and new staff driveway: PLANNING COMMISSION RESOLUTION NO. 2815 7 A. All landscaping within the public right-of-way shall be subject to review and approval by the Development Services Department and City Engineer. B. All landscape and hardscaping shall conform to the approved City standard details shown on Landscape Drawings, on file with the Public Works Department. 15. Final landscape and irrigation documents shall be prepared by a landscape architect registered with the State of California and shall be submitted to the City’s Development Services Department and the CVWD for review and approval. All sheets shall be wet signed by the landscape architect and shall include the license number and the expiration date. The landscape plan shall conform to the preliminary landscape plans prepared as part of this application and shall include dense plantings of landscape material. All plants shall be a minimum of five gallons in size, and all trees shall be a minimum 24-inch box in size. 16. All project irrigation systems shall function properly, and landscaping shall be maintained in a healthy and thriving condition. The maintenance of landscaping and the irrigation system shall be permanently provided for all areas of the project site, as well as walkways and the portion of public right-of-way abutting the project site (parkways). Furthermore, the plans shall identify responsibility for the continued maintenance (such as homeowners’ association, landscape maintenance district, property owner, etc.). 17. Prior to the issuance of certificate of occupancy, the project landscape architect shall submit written verification to the Planning Division that the landscaping and irrigation has been installed per the approved landscape plan. 18. All exterior equipment, and all appurtenances thereto, shall be completely screened from public view by walls or roof screens that are architecturally treated to be consistent with the building. The final construction plans shall include appropriate drawings demonstrating how such equipment is to be screened from view. No rooftop equipment shall be permitted. 19. All ground-mounted utility structures including, but not limited to, transformers, HVAC equipment, and backflow prevention valves shall be located out of view from any public street or adequately screened using landscaping and/or masonry walls. 20. The Applicant shall comply with the recommendations made by the City’s ARC, as referenced in the February 8, 2022, Notice of Action. 21. The Applicant or any successor in interest shall comply with all applicable local, state, and federal laws and regulations. 22. A copy of the herein-listed Conditions of Approval shall be included in the construction documentation package for the project, which shall be continuously maintained on-site during Project construction. 23. The final design of all site walls and fences shall be subject to review and approval by the Palm Desert Development Services Department. PLANNING COMMISSION RESOLUTION NO. 2815 8 LAND DEVELOPMENT DIVISION: 24. The following plans, studies, and exhibits are hereby referenced: The Living Desert Phase 2.5 Preliminary Conceptual Grading Plans; prepared by MSA Consulting, Inc; dated April 5, 2022. 25. Prior to the issuance of a grading permit, the Applicant shall obtain written evidence of approval or clearance from the City of Indian Wells prior to any grading/ground disturbing activity within the boundaries of the City of Indian Wells and comply with all requirements. 26. The Applicant shall provide a current preliminary title report for the site with the submittal of a technical plan. 27. The Applicant is responsible to provide all easements shown on the preliminary grading exhibit to be shown correctly and include all the easements that encumber the subject property. 28. The Applicant shall secure approval from all, if any, easement holders for all grading and improvements that are proposed over the respective easement or provide evidence that the easement has been relocated, quitclaimed, vacated, abandoned, easement holder cannot be found, or is otherwise of no effect. Should such approvals or alternate actions regarding the easements not be provided and approved by the City, the Applicant may be required to amend or revise the proposed site configuration as may be necessary. 29. It is understood that the conceptual exhibits correctly show acceptable centerline elevations, all existing easements, traveled ways, and drainage courses with appropriate Q’s and that the omission or unacceptability may require that the Applicant amend or revise the site plan as may be. 30. All private streets and post-construction Best Management Practices facilities (BMPs) will be permitted as shown on the conceptual exhibit subject to these conditions of approval. The Applicant shall provide an agreement with adequate provisions, by means of the responsible mechanism as approved by the City Engineer and City Attorney, for the continued and perpetual maintenance of these streets and onsite post-construction BMPs to the satisfaction of the City Engineer and City Attorney. 31. Any changes and/or modifications to the approved exhibits may require additional review and are subject to the City Engineer’s approval. 32. The Applicant shall pay appropriate signalization fees per Resolution Nos. 79-17 and 79- 55. 33. The Applicant shall pay, appropriate drainage fees perPDMC Section 26.49 and Palm Desert Ordinance No. 653. 34. The Applicant shall comply with PDMC Section 24 as applicable to this Project. PLANNING COMMISSION RESOLUTION NO. 2815 9 35. Prior to a grading permit, the Applicant shall submit a final grading plan for review and approval. No grading or other improvements shall be permitted until a final grading plan has been approved by the City Engineer. Grading plans and all grading shall conform to the California Building Code, the PDMC, and all other relevant laws, rules, and regulations governing grading in the City of Palm Desert. 36. The grading plan shall provide for acceptance and proper disposal of all off-site drainage flowing onto or through the site. Should the quantities exceed the street capacity, the Applicant shall provide adequate drainage facilities and/or appropriate easements as approved by the City Engineer. 37. The Engineer of Record shall provide the locations of all existing or proposed easements within the property boundary on the grading plans. 38. Pad elevations, as shown on the conceptual exhibit, are subject to review and modification per Chapter 27 of the PDMC. 39. The Engineer of Record shall submit a hydrology report for review and approval by the City Engineer. 40. The Engineer of Record shall incorporate recommendations by the Geotechnical Engineer in their grading design. 41. The grading plan shall provide for the protection of downstream properties from damages caused by alteration of the drainage patterns, i.e., concentration or diversion of flow. All drainage improvements shall be designed to accommodate 100-year storm flows. 42. The Applicant shall provide a truck turning template exhibit, as part of grading plans or along with grading plan submittal, showing adequate interior circulation as well as appropriate and safe turning movements from and to Portola Avenue which shall be reviewed and deemed adequate by the City Engineer. 43. Prior to approval of the grading plan, the Applicant shall prepare a detailed final flood hazard/hydrology and hydraulics report for approval of the City Engineer. 44. Preliminary Drainage Study for The Living Desert Phase 2.4 dated May 10, 2022, was reviewed during the Planning application process. The Final report shall address comments provided on April 28, 2022, on PP22-0001, The Living Desert Expansion, Completeness Review letter by Michael Baker International. 45. All post-construction BMPs shall be designed based on the City of Palm Desert’s maximum infiltration criteria of two (2) inches/hour, or as indicated by the infiltration test results in the geotechnical report, whichever is more restrictive, or as otherwise approved by the City Engineer. 46. All drainage and storm drain improvements shall be designed underPDMC Title 24, Riverside County Flood Control and Water Conservation District’s standards for the Whitewater River Region, the Drainage Element of the Palm Desert General Plan, and PLANNING COMMISSION RESOLUTION NO. 2815 10 all other relevant laws, rules, and regulations governing grading in the City of Palm Desert. 47. Prior to the issuance of a grading permit, the Applicant shall submit a PM10 application for review and approval. The Applicant shall comply with all provisions of the PDMC Section 24.12 regarding Fugitive Dust Control. 48. Prior to the issuance of a grading permit, the Applicant shall submit a Storm Water Pollution Prevention Plan (SWPPP) for review and approval by the Land Development Division. The SWPPP shall describe all BMPs to be implemented year-round. Specific BMP implementation may be dependent upon wet or dry season operations. The SWPPP shall incorporate BMPs to mitigate erosion and sediment control on-site during construction. The Applicant shall submit a Notice of Intent (NOI) from the State Water Resources Control Board prior to grading permit issuance. 49. Where grading involves import or export, the Applicant shall obtain a permit from the Public Works Department, including import/export quantities and hauling route. 50. There shall be no staging of hauling trucks on any streets adjacent to the project unless specifically approved as a condition of an approved haul route. 51. It shall be the sole responsibility of the Applicant to obtain any and all proposed or required easements and/or permissions necessary to perform the grading shown on the tentative grading plan exhibit. Proof shall be provided to the Land Development Division prior to issuance of a grading permit. 52. Prior to the issuance of a grading permit, the Applicant shall obtain letters of permission from affected property owners if construction or construction access is required across property lines. 53. Prior to a grading permit and if grading is required offsite, the Applicant shall obtain written permission from the property owner(s) to grade as necessary and provide a copy to the Engineering Department. 54. The proposed retaining walls shall be designed and constructed completely within the property. No portion of the wall or footing shall extend across the property line. The limits of any retaining wall footing shall be depicted on the grading plan. The Applicant shall provide a plan and profile view of the proposed retaining wall that will depict the top of the wall and top of footing elevations. Retaining walls shall be constructed per a separate permit. 55. The setting of survey monuments is required and intended to protect both public and private property rights in accordance with Federal and State law. Monument perpetuation shall be performed with every Grading Plan and Street Improvement Plan. Upon completion of construction, the Applicant shall reset any monuments that have been destroyed due to the construction of the project. Additionally, the Applicant shall file post- construction Corner Records or Record of Survey with the County Surveyor. PLANNING COMMISSION RESOLUTION NO. 2815 11 56. It is assumed that the grading and the provisions for water quality management shown on the conceptual grading exhibit complies with all requirements for a Final Water Quality Management Plan (F-WQMP) without substantial change from that shown. Prior to issuance of a grading permit,the Applicant shall submit a F-WQMP for review and approval, prepare or cause to be prepared, a F-WQMP in conformance with the requirements of the Riverside County Flood Control and Water Conservation District (RCFC&WCD) Whitewater Watershed area for approval of the City Engineer. 57. A project specific Conceptual Water Quality Management Plan for The Living Desert Expansion Phase 2.5, dated May 10, 2022, was submitted for review during the Planning application process. The Final report shall address comments provided on April 28, 2022, on PP22-0001 Living Desert Expansion, Completeness Review letter by Michael Baker International. 58. F-WQMP shall consider a maximum infiltration rate of 2 inches/hour for the design of proposed site BMPs. 59. Prior to the issuance of a grading permit, the Applicant shall submit plans for review and approval of the City Engineer for all public improvements, including but not limited to, street, storm drain, and sidewalk improvements. 60. Improvement plans shall provide for the construction of ADA-compliant depressed curbs and access ramps, as appropriate. 61. Prior to the issuance of an encroachment permit for public improvements, the Applicant shall enter into an agreement and post financial security guarantee for the construction of all off-site/public improvements. The form and amount of the financial security shall be reviewed and approved by the City Engineer. The Applicant shall guarantee all improvements for a period of one year from the date of final acceptance and the improvement guarantee shall be backed by a bond or cash deposit in the amount of ten percent of the surety posted for the improvements. 62. Prior to a grading permit, the Applicant shall submit improvement plans for Portola Avenue. The Applicant shall be responsible for the construction and installation of improvements for Portola Avenue, including but not limited to: A. The Applicant shall construct parkway improvements along site frontage and provide adequate transition at the improvement’s terminus, as approved by the City Engineer. Including curb and gutter, sidewalk, landscape, and irrigation improvements. B. The Applicant shall provide one driveway approach. C. The Applicant shall submit signing and striping plans. D. The Applicant shall show, as reference only, all existing and proposed utility connections. Utility plans shall be processed and approved by CVWD. 63. Prior to building final inspection, the Applicant is responsible for the completion of construction of all grading and improvements for which plans are required and shall comply with all requirements within public and private road rights-of-way. PLANNING COMMISSION RESOLUTION NO. 2815 12 64. The proposed driveway on Portola Avenue shall be restricted to right-in, right-out, and left-in movements. No left turns out of the site onto Portola Avenue (Westbound) shall be permitted. 65. Prior to a grading permit, the Applicant shall prepare and submit a full-scale signing and striping plan showing the following: Proposed design of a median left-turn pocket from westbound Portola Avenue into the site, left-turn and U-turn prohibition from eastbound Portola Avenue into westbound Portola Avenue, U-turn prohibition from WB Portola Avenue into eastbound Portola Avenue, and left-turn prohibition from site access into WB Portola Avenue. All related signing, striping, and pavement markings shall be shown on the plan, as well as the left-turn pocket dimensions. The Signing and Striping plans must be approved by a Professional Engineer or Traffic Engineer. 66. Portola Avenue proposed driveway approach shall be located per the approved preliminary grading exhibit. The driveway centerline shall be, to the best extent possible, perpendicular to the Portola Avenue centerline; the final alignment and design shall be approved by the City Engineer. BUILDING AND SAFETY DIVISION: 67. This project shall comply with the latest adopted edition of the following codes: A. California Building Code and its appendices and standards. B. California Plumbing Code and its appendices and standards. C. California Mechanical Code and its appendices and standards. D. California Electrical Code. E. California Energy Code. F. California Green Building Standards Code G. Title 24, California Code of Regulations. H. California Fire Code and its appendices and standards. 68. This project will fall under the review and compliance of Chapters 11-A and Chapter 11- B of the latest adopted edition of the California Building Code. 69. The Applicant shall coordinate directly with: Riverside County Fire Marshal’s Office CAL FIRE/Riverside County Fire Department Main: 760-863-8886 77933 Las Montañas Road, Ste 201, Palm Desert, CA 92211 70. All trash enclosures are required to be accessible. Provide an accessible path of travel to the trash enclosure. Trash enclosures shall comply with the minimum requirements established by Chapter 8.12 of the PDMC. 71. All contractors and subcontractors shall have a current City of Palm Desert Business License prior to permit issuance per PDMC, Title 5. PLANNING COMMISSION RESOLUTION NO. 2815 13 72. All contractors and/or owner-builders must submit a valid Certificate of Workers’ Compensation Insurance coverage prior to the issuance of a building permit per California Labor Code, Section 3700. 73. Address numerals shall comply with Palm Desert Ordinance No. 1351 (PDMC 15.28. Compliance with Ordinance 1351 regarding street address location, dimension, a stroke of line, distance from the street, height from grade, height from the street, etc., shall be shown on all architectural building elevations in detail. Any possible obstructions, shadows, lighting, landscaping, backgrounds, or other reasons that may render the building address unreadable shall be addressed during the plan review process. The applicant may request a copy of Ordinance 1351 or Municipal Code Section 15.28 from the Building and Safety Division counter staff. FIRE DEPARTMENT: With respect to the Conditions of Approval for the referenced project, the Fire Department requires the following fire protection measures in accordance with Riverside County Ordinances and/or referenced fire protection standards: 74. Fire Hydrants and Fire Flow: Prior to the issuance of building permits, plans for the water system shall be submitted to the fire department for review and approval. The water system shall be capable of delivering the required fire flow. Based on the application, with a proposed building area of 10,436 square feet, assuming construction type VB, the minimum required fire flow is 1,375 GPM at 20 psi. Fire hydrant location and spacing shall comply with the fire code. An approved water supply for fire protection during construction shall be made available prior to the arrival of combustible materials on site. Reference 2019 California Fire Code (CFC) 507.5.1, 3312, Appendices B and C. 75. Prior to a grading permit issuance, the Office of the Fire Marshal shall review grading plans. 76. Fire Department Access: Prior to building permit issuance, a fire access site plan shall be approved. The access roads shall be capable of sustaining 60,000 lbs. over two axels and 75,000 lbs over three axles in all-weather conditions. Approved vehicle access, either permanent or temporary, shall be provided during construction. CFC 503.1.1, 3310.1 and 503.2.1 77. Requests for installation of traffic calming designs/devices on fire apparatus access roads shall be submitted and approved by the Office of the Fire Marshal. Ref. CFC 503.4.1 78. Phased Construction Access: If construction is phased, each phase shall provide approved access for fire protection prior to any construction. Ref. CFC 503.1 79. Fire Sprinkler System: All new commercial structures 3,000 square feet or larger shall be protected with a fire sprinkler system. Ref CFC 903.2 as amended by the City of Palm Desert. PLANNING COMMISSION RESOLUTION NO. 2815 14 80. Fire Alarm and Detection System: A water flow monitoring system and/or fire alarm system may be required and will be determined at the time of building plan review. Ref. CFC 903.4, CFC 907.2 and NFPA 72. 81. Knox Box and Gate Access: Buildings shall be provided with a Knox Box installed in an accessible location approved by the Office of the Fire Marshal. Manual gates shall be equipped with approved Knox equipment. Electric gates shall be provided with Knox key switches. Electric gate operators shall also be connected to a remote signal receiver compatible for use with the preemption devices on the Riverside County fire apparatus. The gate shall automatically open upon receiving a remote signal from the fire apparatus and remain in the fully open position for a minimum of 30 seconds. Ref. CFC 506.1 82. Addressing: All commercial buildings shall display street numbers in a prominent location on the street side of the premises and additional locations as required. Ref. CFC 505.1 and County of Riverside Office of the Fire Marshal Standard No. 07-01 END OF CONDITIONS OF APPROVAL CITY OF PALM DESERT PUBLIC HEARING NOTICE CASE NO. PP22-0001 NOTICE OF A PUBLIC HEARING BEFORE THE CITY OF PALM DESERT PLANNING COMMISSION TO CONSIDER THE ADOPTION OF A NOTICE OF EXEMPTION AND APPROVAL OF A PRECISE PLAN FOR A REQUEST BY PVG ARCHITECTS TO CONSTRUCT AN OFFICE AND STORAGE BUILDINGS, AND EXPAND THE EXISTING PARKING AREA OF THE LIVING DESERT ZOO AND GARDENS AT 47900 PORTOLA AVENUE. The City of Palm Desert (City), in its capacity as the Lead Agency for this project under the California Environmental Quality Act (CEQA), finds that the proposed project is categorically exempt under Article 19 Section 15332 In-Fill Development Projects (Class 32) of the CEQA; therefore, no further environmental review is necessary, and that a Notice of Exemption can be adopted as part of this project. Project Location/Description: Project Location: 47900 Portola Avenue (APN 655-230-019) Project Description: The proposal is a Precise Plan for an expansion of The Living Desert Zoo and Gardens, which will include the following: x Addition of 179 public parking spaces to the existing parking lot. x Construction of a 10,436-square-foot administrative facility building. x Construction of two storage buildings totaling 4,576 square feet. x Construction of a new staff driveway providing vehicle access to Portola Avenue. Recommendation: Staff is recommending that the Planning Commission adopt a resolution approving the project request, subject to the conditions of approval. Public Hearing: The public hearing will be held before the Planning Commission on Tuesday, July 5, 2022, at 6:00 p.m. via Zoom. The hearing will be conducted in accordance with the City’s emergency protocols for social distancing. Options for remote participation will be listed on the Posted Agenda for the meeting at: https://www.cityofpalmdesert.org/our-city/committees-and- commissions/planning-commission-information-center. Comment Period: The public comment period for this project is from June 24, 2022, to July 5, 2022. Public Review: The plans and related documents are available for public review Monday through Thursday from 8:00 a.m. to 5:00 p.m. by contacting the project planner, Nick Melloni. Please submit written comments to the Planning Division. If any group challenges the action in court, issues raised may be limited to only those issues raised at the public hearing described in this notice or in written correspondence at or prior to the Planning Commission hearing. All comments and any questions should be directed to: Nick Melloni, Senior Planner City of Palm Desert 73-510 Fred Waring Drive P l D t CA 92260 ARCHITECTURAL REVIEW COMMISSION NOTICE OF ACTION February 17, 2022 PVG Architects 44530 San Pablo Ave # 200 Palm Desert, CA 92260 Subject: Consideration of a recommendation to the Planning Commission for approval of a Precise Plan and Environmental Assessment to construct a new administrative facility building, storage building, parking lot expansion for The Living Desert Zoo & Gardens located at 47900 Portola Avenue. The Architectural Review Commission of the City of Palm Desert considered your request and took the following action at its meeting of February 8, 2022: By Minute Motion, the Architectural Review Commission approved Case No. PP 22- 0001, as presented. The motion carried with a 5-0 vote. (AYES: Lambell, Latkovic, McAuliffe, McIntosh, and Van Vliet; NOES: None; ABSENT: Vuksic) Any appeal of the above action may be made in writing to the City Clerk of the City of Palm Desert within 15 days of the date of the decision. If you have any questions, please contact Associate Planner, Nick Melloni, at (760) 346-0611, Extension 479 or nmelloni@cityofpalmdesert.org. Sincerely, ROSIE LUA, SECRETARY ARCHITECTURAL REVIEW COMMISSION cc: File MINUTES ARCHITECTURAL REVIEW COMMISSION FEBRUARY 8, 2022 3 masses; 4) Explore alternative options for placement of mechanical equipment to avoid overcrowding and excessive noise; 5) All mechanical equipment should be properly screened with access for service, use of other methods of screening in addition to landscape is encouraged; 6) Applicant will work with Planning staff to develop a landscape maintenance agreement which will ensure the upkeep of landscape utilized for screening and as a buffer between the project and Via Venezia; and 7) Project will be reviewed by staff and return to the ARC should there be any items that cannot be resolved with Applicant. (AYES: Lambell, Latkovic, McAuliffe, Vuksic and Van Vliet; NOES: McIntosh; ABSENT: None) A. PRELIMINARY PLANS 1. CASE NO: PP 22-0001 NATURE OF PROJECT/APPROVAL SOUGHT: Consideration of a recommendation to the Planning Commission for approval of a Precise Plan and Environmental Assessment to construct a new administrative facility building, storage building, parking lot expansion for The Living Desert Zoo & Gardens located at 47900 Portola Avenue. APPLICANT AND ADDRESS: PVG Architects, Palm Desert CA 92260 LOCATION: 47900 Portola Avenue ZONE: P Commissioner Vuksic advised the Commission his firm is representing the applicant. Commissioner Vuksic recused himself for this item due to a conflict of interest. Associate Planner, Nick Melloni, presented the item. Mr. Melloni mentioned this expansion project is in addition to the master plan for The Living Desert; a three phased project approved by the Planning Commission in 2015. Mr. Melloni turned the presentation over to the applicant and architect John Greenwood of PVG Architects, who answered questions from the Commission and provided additional details on the proposed project. In response to inquiry by Vice Chair Lambell, Mr. Greenwood explained there are a couple of places on the facilities building which provide an alternate option for materials. These alternates are included for approval to allow room for a budget friendly option should there be a need. He further added there is no change in the architecture, just the materials. Discussion on the item ensued with Commissioners providing comments and concerns for the project. Principal Planner, Rosie Lua, invited comments from the public, to which there were none. Upon a motion by Chair Van Vliet, seconded by Vice Chair Lambell, and a 5-0 vote of the Architectural Review Commission, Case No. PP 22-0001, was approved as presented. (AYES: Lambell, Latkovic, McAuliffe, McIntosh, and Van Vliet; NOES: None; ABSENT: Vuksic) Notice of Exemption FORM “B” NOTICE OF EXEMPTION TO: Office of Planning and Research P. O. Box 3044, Room 113 Sacramento, CA 95812-3044 FROM: City of Palm Desert 73-510 Fred Waring Drive Palm Desert, CA 92260 Clerk of the Board of Supervisors or County Clerk County of: Riverside 2724 Gateway Dr, Riverside, CA 92507 1. Project Title: PP 22-0001 2. Project Applicant: PVG Architects 3. Project Location – Identify street address and cross streets or attach a map showing project site (preferably a USGS 15’ or 7 1/2’ topographical map identified by quadrangle name): 47900 Portola Avenue – APN 655-230-019 4. (a) Project Location – City: Palm Desert (b) Project Location – County: Riverside 5. Description of nature, purpose, and beneficiaries of Project: The Project is a Precise Plan for an encompassing the improvement of 3.6 acres of an existing zoo facility including: •Expansion of an existing public parking lot (675 existing spaces) by adding 179 new public spaces (854 total parking spaces). •Construction of a new private parking lot (49 spaces) for staff. •Construction of a 10,356-square-foot single-story facilities building. •Construction of two single-story storage buildings at 2,943 square feet and 1,633 square feet totaling, 4,576 square feet. •Construction of a new gated staff and delivery driveway entry access on Portola Avenue, approximately 180 feet north of Reserve Drive. •Modification of the existing median on Portola Avenue to accommodate access for the proposed staff and delivery driveway by providing a left-hand turn lane on the southbound of Portola Avenue. 6. Name of Public Agency approving project: City of Palm Desert 7. Name of Person or Agency undertaking the project, including any person undertaking an activity that receives financial assistance from the Public Agency as part of the activity or the person receiving a lease, permit, license, certificate, or other entitlement of use from the Public Agency as part of the activity: PVG Architects – Living Desert 8. Exempt status: (check one) (a) Ministerial project. (Pub. Res. Code § 21080(b)(1); State CEQA Notice of Exemption FORM “B” Guidelines § 15268) (b) Not a project. (c) Emergency Project. (Pub. Res. Code § 21080(b)(4); State CEQA Guidelines § 15269(b),(c)) (d) Categorical Exemption. State type and section number: Class 32 “In-fill Development ”; State CEQA Guidelines §15332 (e) Declared Emergency. (Pub. Res. Code § 21080(b)(3); State CEQA Guidelines § 15269(a)) (f) Statutory Exemption. State Code section number: (g) Other. Explanation: General Rule – Section 15061(b)(3) 9. Reason why project was exempt: 1)The project is consistent with the applicable General Plan designation and all applicable General Plan policies. As analyzed, the project includes an additional 15,000 square feet of commercial building area, which will replace existing portable building structures. The proposed project meets the development standards within the P zoning designation. 2)The project occurs within a 3.6-acre portion of the project site, which is less than five (5) acres specified in the criteria of the Class 32 exemption and is substantially surrounded by urban uses. 3)The site has no value as a habitat for endangered, rare, or threatened species. The site has been previously graded and is occupied by existing portable building structures and a greenhouse. The site is not identified as suitable as a habitat for endangered species in the Coachella Valley Multi-Species Habitat Conservation Plan (MSHCP). 4)Approval of the project would not result in any significant effects relating to traffic, noise, air quality, or water quality. The proposed use will not result in significant noise that will violate the City’s Noise Ordinance. In addition, the City Engineer has reviewed the proposed use and the existing infrastructure, including the off-site improvements, and staff finds the use will not have a significant effect on traffic. In addition, a preliminary grading plan and hydrology report have been submitted for review, and final approval will commence as part of the conditions of approval herein. No other significant noise or air quality effects were identified for the project. 5)The site can be adequately served by all required utilities and public services. The proposed project has been reviewed by various utility agencies and public services, including Southern California Edison, the Coachella Valley Water District, and Burrtec Waste Management. These agencies have not identified that utilities in the area are insufficient to serve the proposed office building and parking area. Notice of Exemption FORM “B” Additionally, the project is not subject to any of the exceptions for categorical exemptions identified in CEQA Guidelines Section 15300.2: 1) The project qualifies as a Class 32 exemption, which is not listed as one of the classes under 15300.2 (A). The project is not located on a site where it may have an adverse impact on an environmental resource of hazardous or critical concern where designated, precisely mapped, and officially adopted pursuant to law by federal, state, or local agencies. The project site will not impact designated environmental or biological resources as it is not located within a conservation area as identified by the Coachella Valley Multiple Species Habitat Conservation Plan. 2)The project will not have a cumulative impact on the environment. The proposal does not conflict with additional impacts in terms of traffic generation in addition to the existing facility. The proposal will expand existing parking areas and construct new admin and storage buildings, which will replace existing portable buildings used for the same functions. 3)There are no unusual circumstances on the project site. The project site is not located within a flood zone per the latest FEMA Flood Zone Maps. The project site is located within an Urban area per Fire Hazard Severity Zone maps available from the Riverside County Fire Department and depicted in Figure 8.5 on Page 119 of the General Plan. The project site is not identified within an Alquist-Priolo Fault Zone per the latest maps on file with the California Department of Conservation; the nearest fault zone is adjacent to the Indio Hills area north of the Palm Desert city limits. 4)The project site is not located in proximity to any scenic highway. The nearest officially designated scenic highway is Highway 74, located outside of the Palm Desert city limits approximately 2.8 miles to the southwest of the project site. 5)The project site is identified as a historic waste site on any list compiled per Section 65962.5 of the Government Code. 6)The project site does not contain any existing designated historic resource and is not within a designated historic preservation district. The site has been previously surveyed and not identified as containing any existing historic resources. 10. Lead Agency Contact Person: Nick Melloni, Associate Planner Telephone: (760) 776-6479 11. If filed by applicant: Attach Preliminary Exemption Assessment (Form “A”) before filing. 12. Has a Notice of Exemption been filed by the public agHQF\DSSURYLQJWKHSURMHFW"͘<HV ͘1R 13. :DVDSXEOLFKHDULQJKHOGE\WKHOHDGDJHQF\WRFRQVLGHUWKHH[HPSWLRQ"͘<HV ͘1R If yes, the date of the public hearing was: July 5, 2021 Notice of Exemption FORM “B” Signature:__________________________________ Date:_______________ Title:__________________________ ͘ 6LJQHGE\/HDG$JHQF\͘ Signed by Applicant Date Received for Filing: (Clerk Stamp Here) Authority cited: Sections 21083 and 21100, Public Resources Code. Reference: Sections 21108, 21152, and 21152.1, Public Resources Code. 352-(&7,1)250$7,21 2:1(5$33/,&$17 /(*$/'(6&5,37,21 352-(&7'(6&5,37,21 =21,1* $5($'$7$ 7+(/,9,1*'(6(57 32572/$$9( 3$/0'(6(57&$ 3+ )$; ZZZOLYLQJGHVHUWRUJ $//(102152(35(6,'(17&(2 &217$&7 -2+1*5((1:22'$5&+,7(&7 3+ 352-(&77+(/,9,1*'(6(57=22 *$5'(1 &5($7($1(:(175<7+$75()/(&767+(=22 ()),&,(1&<%<6,=,1*,7)25)8785(*52:7+ 32572/$$9( 3$/0'(6(57&$ =21,1* 38%/,& *(1(5$/3/$1'(6,*1$7,21 38%/,&)$&,/,7 $31 7+(/$1'5()(55('72,17+,65(3257,66,78 &$/,)251,$$1',6'(6&5,%('$6)2//2:6 $&5(60/,13251(2)6(&765 72:16+,31$&5(60/6(&7,21325 5$1*(',5(&7,21( 3$5&(/$5($ $&5(6 0% 1$5 1$5#URJ#URJ1$5   120+ 32572/$$9( 32572/0% 1$5 1$5#URJ#URJ1$5   120+ $32572/$$9(352326('(0 3$5.,1*(; 352326(' 352326(' 6 32572/$$0% 1$5 1$5 1$5#URJ#URJ1$5      120+ /(*(1'32572/$$9( %8&.%2$5' 0% 1$#URJ#URJ 405.6 406.7 407.5 407 5(6(59('5,9(   /,1(2)6,*+7)5205(6 $  %  (175< 2)),&( $              367  670 333     :HVW(OHYDWLRQ :(67(/(9$7,21    $  %  $  723      $ $ $     6725$*($ 33 ),567)/225   6KHHW 6FDOH &76&20_7 _3$/0'(6(57&$ ::39*$5&+,7(&76&20 *5((1:22' ,17(5,256    $ 6725$*((/(9$7,216  :(676725$*(-$18$5< ),567)/225  00 6KHHW 6FDOH &76&20_7 _3$/0'(6(57&$ ::39*$5&+,7(&76&20 *5((1:22' ,17(5,256    $ 6725$*((/(9$7,216  ($676725$*(-$18$5< ),567)/225  6KHHW 6FDOH &76&20_7 _3$/0'(6(57&$ ::39*$5&+,7(&76&20 *5((1:22' ,17(5,256 $VLQGLFDWHG $ 6725$*(&2/25 (/(9$7,21 -$18$5< $ $ $      $ 723    522)3/$1 :(676725$*( 6KHHW 6FDOH &76&20_7 _3$/0'(6(57&$ ::39*$5&+,7(&76&20 *5((1:22' ,17(5,256 $ '9,(:6 -$18$5< 03 6KHHW 6FDOH &76&20_7 _3$/0'(6(57&$ ::39*$5&+,7(&76&20 *5((1:22' ,17(5,256    ( 6,7(/,*+7),;785( 6&+('8/(-$18$5< SHEET L-5.02 MATCHLINE SEE SHEET L-5.01 TREES BOTANICAL / COMMON NAME SIZE WU R Chilopsis linearis Desert Willow 24" BOX M 0.5 Cordia boissieri Anacahuita 24" BOX L 0.2 Existing Tree ET - Fraxinus greggii Gregg's Ash 24" BOX L 0.2 Parkinsonia floridum Blue Palo Verde 24" BOX L 0.2 Parkinsonia floridum Blue Palo Verde 24" BOX L 0.2 M Prosopis chilensis Chilean Mesquite 24" BOX L 0.2 M Prosopis chilensis Chilean Mesquite 24" BOX L 0.2 S SHRUBS BOTANICAL / COMMON NAME SIZE WU R Calliandra californica Red Baja Fairy Duster 5 gal L 0.2 Encelia farinosa Brittle Bush 5 gal L 0.2 Eremophila glabra `Mingenew Gold` Outback Sunrise Emu Bush 5 gal L 0.2 Justicia californica PLANT SCHEDULE Whitewater River Region WQMP Project Specific Final Water Quality Management Plan For:The Living Desert – Phase 2.5 47900 Portola Avenue, Palm Desert, CA 92260 DEVELOPMENT NO. APN 655-230-019 Prepared for: The Living Desert 47900 Portola Avenue Palm Desert, CA 92260 Telephone: (760) 346-5694 Prepared Under the Direction of: Rodney R. Reed MSA Consulting, Inc. 34200 Bob Hope Drive Rancho Mirage, CA 92270 Telephone: (760) 320-9811 Fax No. (760) 323-7893 Original Date Prepared: May 10, 2022 Revision Date(s): N/A Whitewater River Region Final WQMP The Living Desert– Phase 2.5 OWNER'S CERTIFICATION This project-specific Final Water Quality Management Plan (WQMP) has been prepared for: The Living Desert by MSA Consulting, Inc. for the project known as The Living Desert - Phase 2.5 in the City of Palm Desert, California. This Preliminary WQMP is intended to comply with the requirements of Palm Desert for APN 655-230- 019, which include the requirement for the preparation and implementation of a project-specific Preliminary WQMP. The undersigned, while owning the property/project described in the preceding paragraph, shall be responsible for the implementation of this Preliminary WQMP and will ensure that this Preliminary WQMP is amended as appropriate to reflect up-to-date conditions on the site. This Preliminary WQMP will be reviewed with the facility operator, facility supervisors, employees, tenants, maintenance and service contractors, or any other party (or parties) having responsibility for implementing portions of this Preliminary WQMP. At least one copy of this Preliminary WQMP will be maintained at the project site or project office in perpetuity. The undersigned is authorized to certify and to approve implementation of this Preliminary WQMP. The undersigned is aware that implementation of this Preliminary WQMP is enforceable under City of Palm Desert Water Quality Ordinance (Palm Desert Municipal Code – Title 24.20). If the undersigned transfers its interest in the subject property/project, the undersigned shall notify the successor in interest of its responsibility to implement this Preliminary WQMP. "I, the undersigned, certify under penalty of law that I am the owner of the property that is the subject of this Preliminary WQMP, and that the provisions of this Final WQMP have been reviewed and accepted and that the Preliminary WQMP will be transferred to future successors in interest." To Be Provided ATTEST Owner's Signature Allen Monroe Owner's Printed Name President/CEO Owner's Title/Position Date 47900 Portola Avenue Palm Desert, CA 92260 THIS FORM SHALL BE NOTARIZED BEFORE ACCEPTANCE OF THE FINAL PROJECT SPECIFIC WQMP Notary Signature Printed Name Title/Position Date Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 i Contents SECTION PAGE I. Project Description.........................................................................................................................1 II. Site Characterization .....................................................................................................................6 III. Pollutants of Concern.....................................................................................................................8 IV. Hydrologic Conditions of Concern............................................................................................10 V. Best Management Practices........................................................................................................11 V.1 SITE DESIGN BMP CONCEPTS,LID/SITE DESIGN AND TREATMENT CONTROL BMPS ....11 V.1.A SITE DESIGN BMP CONCEPTS AND LID/SITE DESIGN BMPS.................................13 V.1.B TREATMENT CONTROL BMPS ................................................................................19 V.1.C MEASURABLE GOAL SUMMARY .............................................................................21 V.2 SOURCE CONTROL BMPS .................................................................................................22 V.3 EQUIVALENT TREATMENT CONTROL BMP ALTERNATIVES ............................................25 V.4 REGIONALLY-BASED BMPS .............................................................................................25 VI. Operation and Maintenance Responsibility for BMPs..........................................................26 VII. Funding ..........................................................................................................................................29 TABLES TABLE 1. POLLUTANT OF CONCERN SUMMARY 8 TABLE 2. BMPSELECTION MATRIX BASED UPON POLLUTANT OF CONCERN REMOVAL EFFICIENCY 12 TABLE 3. IMPLEMENTATION OF SITE DESIGN BMP CONCEPTS 14 TABLE 4. LID/SITE DESIGN BMPS MEETING THE LID/SITE DESIGN MEASURABLE GOAL 18 TABLE 5: TREATMENT CONTROL BMP SUMMARY 20 TABLE 6: MEASURABLE GOAL SUMMARY 21 TABLE 7. SOURCE CONTROL BMPS 22 APPENDICES A. CONDITIONS OF APPROVAL B. VICINITY MAP,WQMPSITE PLAN,AND RECEIVING WATERS MAP C. SUPPORTING DETAIL RELATED TO HYDROLOGIC CONDITIONS OF CONCERN (IF APPLICABLE) D. EDUCATIONAL MATERIALS E. SOILS REPORT (IF APPLICABLE) F. STRUCTURAL BMP AND/OR RETENTION FACILITY SIZING CALCULATIONS AND DESIGN DETAILS G. AGREEMENTS – CC&RS,COVENANT AND AGREEMENTS,BMPMAINTENANCE AGREEMENTS AND/OR OTHER MECHANISMS FOR ENSURING ONGOING OPERATION,MAINTENANCE,FUNDING AND TRANSFER OF REQUIREMENTS FOR THIS PROJECT-SPECIFIC WQMP H. PHASE 1ENVIRONMENTAL SITE ASSESSMENT –SUMMARY OF SITE REMEDIATION CONDUCTED AND USE RESTRICTIONS I. PROJECT-SPECIFIC WQMPSUMMARY DATA FORM Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 1 I. Project Description Project Owner: The Living Desert 47900 Portola Avenue Palm Desert, CA 92260 Telephone: (760) 346-5694 WQMP Preparer: Prepared Under the Direction of Rodney R. Reed MSA Consulting, Inc. 34200 Bob Hope Drive Rancho Mirage, CA 92270 Telephone: (760) 323-7893 Fax No.: (760) 323-7893 Project Site Address:47900 Portola Avenue, Palm Desert, CA 92260 Planning Area:Coachella Valley Planning Area Community Name:City of Palm Desert Development Name:The Living Desert– Phase 2.5 APN Number(s):655-230-019 Latitude & Longitude:33°41’56.79”North, 116°22’25.65” West Thomas Bros. Map:Page 848, grid G4 (2007 Riverside County Edition) Receiving Water:Whitewater River, Coachella Valley Stormwater Channel Phase 2.5 Hydrologic Area:11.74 Acres (Conveyed to proposed BMPs) Standard Industrial Classification (SIC) Code(s): x 8422 Arboreta and Botanical or Zoological Gardens x 7521 Automobile Parking Formation of Home Owners' Association (HOA) or Property Owners Association (POA): Y N Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 2 Additional Permits/Approvals required for the Project: AGENCY Permit required State Department of Fish and Wildlife, Fish and Game Code §1602 Streambed Alteration Agreement Y N State Water Resources Control Board, Clean Water Act (CWA) Section 401 Water Quality Certification Y N US Army Corps of Engineers, CWA Section 404 permit Y N US Fish and Wildlife, Endangered Species Act Section 7 biological opinion Y N Statewide Construction General Permit Coverage Y N Statewide Industrial General Permit Coverage Y N Other: City of Palm Desert Grading Permit Y N City of Palm Desert Building Permit Y N x The proposed project activity will not divert or obstruct the natural flow or change the bed, channel, or bank of any stream, river or lake. Therefore, a State Department of Fish and Game, 1601 Streambed Alteration Agreement is not required. x The proposed project activity will not result in discharge into navigable waters; therefore, a Clean Water Act Section 401 Water Quality Certification permit is not required. x The proposed facility will not result in the discharge of dredged or fill materials into the waters of the United States, including wetlands. A Clean Water Act Section 404 Permit is not required for this project. x The proposed project site is not recognized as a habitat of an endangered species nor does it form part of a Conservation Area under the Coachella Valley Multiple Species Habitat Conservation Plan. A U.S. Fish and Wildlife, Endangered Species Act Section 7 biological opinion is not required for this project. x The proposed project is not industrial in nature. Therefore, coverage under the General Permit for Storm Water Discharges Associated with Industrial Activities is not required. This project will obtain coverage under the State Water Board NPDES General Permit for Storm Water Discharges Associated with Construction and Land Disturbance Activities. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 3 Existing Conditions: The Project is located east of Portola Avenue, within The Living Desert Zoo and Gardens, in the City of Palm Desert, County of Riverside. The irregularly shaped Project area is situated south and southeast of the existing public parking area and south of the existing giraffe and large hoofstock holding barns. This site is bordered on the south by The Reserve, an existing golf and residential development. Presently, the Project site is characterized as non-public “back-of-house” buildings and structures used for various operations and maintenance purposes and for equipment storage, as well as a landscape nursery. The existing parking lot surface design consists of concrete permeable pavers underlain by a 1.5- inch layer of aggregate base laying course, filter fabric, a 4.5-inch aggregate base course, over a 90-percent compacted subgrade. Stormwater runoff from this portion of the parking lot that does not percolate through the permeable surface is conveyed into three existing inlets, which are connected to a 24-inch high-density polyethylene (HDPE) storm drain pipe, then an existing 66- inch reinforced concrete pipe (RCP) that terminates approximately 1,500 feet northeast of the project site. At this location, two underground perforated-pipe sub-drains are installed to percolate storm runoff directly into the ground. An overflow outlet at the terminus is installed to allow larger storm flows to escape and continue overland toward the Haystack channel. The existing 66-inch storm drain pipeline traversing The Living Desert facility is designed as a pass-through conveyance of off-site stormwater runoff. This existing storm drain facility accepts runoff from a largely residential portion of Ironwood Country Club and The Reserve Club, located off-site and to the south. Project Description The proposed improvements include removal of all buildings and structures adjacent to the public parking area, except for the primary maintenance building, to provide for expansion of the public parking area. Improved drive aisles will be constructed in the back-of-house areas to accommodate operational circulation and a new private driveway connection will be constructed on Portola Drive south of the existing maintenance building to provide a dedicated entrance for staff and deliveries. The primary drive aisle along the south park boundary will be improved and will include staff parking spaces and two modular storage buildings. The existing landscape nursery will be removed and a Facilities Building will be constructed on its site, along with small parking areas for staff vehicles, park golf carts and park tram cars. The expansion of the existing parking area will utilize matching and equivalent permeable paver sections on all driving and parking surfaces and will incorporate a continuation of the existing pattern of landscaped islands and tree wells. The general slope of the expanded parking area also will maintain continuity and uniformity with the existing parking area. The parking area expansion lies within the area designated on the Preliminary Hydrology Exhibit as Drainage Area A, which also includes the existing maintenance building and its redeveloped back-of-house drive aisle, the redeveloped drive aisle along the south boundary and its new bay of staff parking spaces, the new private driveway connection to Portola Avenue and the two new modular storage buildings. The redeveloped drive aisles and staff parking bay will be surfaced with asphalt pavement and will drain to a storm drain inlet at the gated entrance to the maintenance area from the public parking area. Runoff captured in each inlet will be conveyed via storm drain pipe to underground retention chambers sized to accommodate the incremental increase of storm drain runoff volume due to development. Any additional runoff not captured will continue downstream. Runoff bypassing the inlet will continue onto the existing permeable pavers of the Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 4 existing public parking area. As is currently the case any runoff that is not captured through the parking area’s permeable pavers or its interceding landscape strips and tree wells would be collected by the three existing catch basins at the northeast corner of the parking area and conveyed ultimately to the percolation sub-drains at the north terminus of the existing 66” storm drain pipe as described above. Drainage Area B includes the proposed paved drive, the automobile parking area for the Facilities Building, and the existing giraffe and large hoofstock barns/holding areas. The area currently is a limited, self-contained drainage basin formed by the existing berms and mounding that separate the holding areas from the giraffe habitat. An existing overflow inlet west of the giraffe barn connects to the existing 66” storm drain. To drain the proposed development, a small area drain south of the Facilities Building and two proposed storm drain inlets, one north and one south of the proposed Storage Building, will receive runoff to be conveyed via storm drain pipes to an underground retention chamber near the existing overflow inlet. The chamber will be sized for incremental increase volume, with any additional runoff continuing along the existing flow path down into the basin area. Drainage Area C includes the Facilities Building, the golf cart and tram car parking areas and the adjacent drive aisle. Runoff from this area is collected in a proposed inlet near the south end of the recently constructed warthog exhibit, which connects to an underground retention chamber. Any additional runoff beyond incremental increase will continue downstream along existing drainage routes that ultimately lead to the large retention areas in the existing rhinoceros exhibits. All three retention chambers as described will provide treatment of runoff. Location of Activities and Waste Generation: The proposed improvements will accommodate parking and pedestrian circulation in the expanded public parking areas and operational vehicular and pedestrian circulation in the back-of-house areas. Trash generated in these areas will be managed in accordance with the existing waste management and recycling procedures for The Living Desert. Waste handling in adjacent existing animal exhibits will also be in accordance with the existing maintenance and waste management practices in place at The Living Desert. Appendix A of this project-specific WQMP includes: a. A Vicinity Map identifying the project site and surrounding planning areas in sufficient detail; and b. A Site Plan for the project. The Site Plan included as part of Appendix B depicts the following project features: „Location and identification of all structural BMPs, including Source Control, LID/Site Design and Treatment Control BMPs. „Landscaped areas. „Paved areas and intended uses (i.e., parking, outdoor work area, outdoor material storage area, sidewalks, patios, tennis courts, etc.). „Number and type of structures and intended uses (i.e., buildings, tenant spaces, dwelling units, community facilities such as pools, recreation facilities, tot lots, etc.). Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 5 „Infrastructure (i.e., streets, storm drains, etc.) that will revert to public agency ownership and operation. „Location of existing and proposed public and private storm drainage facilities (i.e., storm drains, channels, basins, etc.), including catch basins and other inlets/outlet structures. Existing and proposed drainage facilities should be clearly differentiated. „Location(s) of Receiving Waters to which the project directly or indirectly discharges. „Location of points where onsite (or tributary offsite) flows exit the property/project site. „Delineation of proposed drainage area boundaries, including tributary offsite areas, for each location where flows exit the project site and existing site (where existing site flows are required to be addressed). Each tributary area should be clearly denoted. „Pre- and post-project topography. Appendix I is a one page form that summarizes pertinent information relative to this project- specific WQMP. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 6 II. Site Characterization Land Use Designation or Zoning: Existing and Proposed General Plan: Public/Quasi-Public Facilities (PF) Existing and Proposed Zoning: Public Facility (P, D) Current Property Use:Public Facility Proposed Property Use: Public Facility Availability of Soils Report:Y N Phase 1 Site Assessment:Y N Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 7 Receiving Waters for Urban Runoff from Site Receiving Waters EPA Approved 303(d) List Impairments Designated Beneficial Uses Proximity to RARE Beneficial Use Designated Receiving Waters Deep Canyon Stormwater Channel Not listed as impaired. Not included in the list of Beneficial Uses of Surface Waters in the West Colorado River Basin,Water Quality Control Plan for the Colorado River Basin Region. Water body not classified as RARE Whitewater River Not listed as impaired. MUN, AGR, GWR, REC I, REC II, WARM (Intermittent) COLD, WILD, POW Water body not classified as RARE Coachella Valley Stormwater Channel Pathogens FRSH, REC I c, REC II c, WARM, WILD, RARE d Approximately 7miles The preceding table is based on the 2012 Integrated Report (Clean Water Act Section 303(d) List/305(b) Report. Abbreviations: I – Intermittent Beneficial Use FRSH – Freshwater Replenishment REC I – Water Contact Recreation REC II – Non-Contact Water Recreation WARM – Warm Freshwater Habitat WILD – Wildlife Habitat RARE – Preservation of Rare, Threatened, or Endangered Species MUN – Municipal & Domestic Supply AGR – Agricultural Supply GWR – Groundwater Recharge AQUA – Acuaculture COLD – Cold Freshwater Habitat POW – Hydropower Generation a. Although it is not encouraged, children play in the water infrequently on the wildlife reserve b. Section of perennial flow from approximately Indio to the Salton Sea. c. Unauthorized use. d. Rare, endangered, or threatened wildlife exists in or utilizes some of this waterway. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 8 III. Pollutants of Concern Table 1. Pollutant of Concern Summary Pollutant Category Potential for Project and/or Existing Site Causing Receiving Water Impairment Bacteria/Virus (Pathogens)Yes Yes (Pathogens) Heavy Metals Yes No Nutrients Yes No Toxic Organic Compounds Yes No Sediment/Turbidity Yes No Trash & Debris Yes No Oil & Grease Yes No The Coachella Valley Stormwater Channel is impaired by pathogens. x The proposed development is not anticipated to produce toxaphene because the use of this substance (synthetic organic compound) has been illegal since 1990; therefore, it will not be used or form part of the proposed development. x The project is not anticipated to produce polychlorinated biphenyls (PCBs) because manufacturing this substance (synthetic organic compound) stopped in 1977 and its application was banned in 1979. x The project is not anticipated to generate Dieldrin contamination because the use of this substance (synthetic organic compound) was related to agricultural operations (found in pesticides for crops) and it has been illegal since 1987; therefore, it will not be used or form part of the proposed development. x The project is not anticipated to generate DDT contamination because the use of this substance (synthetic organic compound) has been banned since 1972; therefore, it will not be used or form part of the proposed development. x The project has the potential to generate small amounts of pathogens. These pollutants are generally associated with various human activities, but pathogens are also present in natural environments. Moreover, pathogens can be associated with wild and domesticated animal waste. Source control measures to address this potential pollutant are discussed in the subsequent sections of this report. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 9 Based on Table 1 (Potential Pollutants Generated by Land Use Type) in the Riverside County Whitewater River Region Stormwater Quality Best Management Practice Design Handbook for Low Impact Development, the proposed project will consist of the following land use types and associated potential pollutants. Type of Development (Land Use) Sediment/ Turbidity Nutrients Toxic Organic Compounds Trash & Debris Bacteria & Viruses (Also: Pathogens) Oil & Grease Heavy Metals Parking Lots P P(1) P(4) P P P P Abbreviations: P = Potential N = Not potential Notes: (1) A potential Pollutant if non-native landscaping exists or is proposed onsite; otherwise not expected. (2) A potential Pollutant if the project includes uncovered parking areas; otherwise not expected. (3) A potential Pollutant if land use involves food or animal waste products. (4) Specifically, petroleum hydrocarbons. (5) Specifically, solvents; however, this Pollutant is not expected at commercial office or commercial retail sites, unless said retail is vehicle related. (6) A potential Pollutant if the project includes outdoor storage or metal roofs; otherwise not expected. The project will result in modifications to the existing parking lot, which is constructed with permeable pavers. The project will result in the addition of 25 or more parking spaces potentially exposed to urban runoff. The existing parking lot has a generalized potential to produce sediment/turbidity; nutrients; toxic organic compounds (specifically, petroleum hydrocarbons); trash and debris; bacteria and viruses (including pathogens); oil and grease; and heavy metals. The proximate receiving waters include the Deep Canyon Storm Water Channel, Whitewater River and the Coachella Valley Stormwater Channel. Deep Canyon Stormwater Channel and Whitewater River are not listed as being impaired. Potential Project Pollutants: sediment/turbidity; nutrients; toxic organic compounds (specifically, petroleum hydrocarbons); trash and debris; bacteria and viruses (including pathogens); oil and grease; and heavy metals. Legacy Pollutants: There is no evidence of legacy pollutants on-site. The project area is largely vacant land within the confines and management of The Living Desert Pollutants of Concern:Based on the comparison of potential project pollutants with the pollutant categories causing receiving water impairments, the pollutants of concern include bacteria/virus (pathogens). Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 10 IV. Hydrologic Conditions of Concern Local Jurisdiction Requires On-Site Retention of Urban Runoff: Yes The project will be required to retain urban runoff onsite in conformance with local ordinance (See Table 6 of the WQMP Guidance document, "Local Land use Authorities Requiring Onsite Retention of Stormwater"). This section does not need to be completed; however, retention facility design details and sizing calculations must be included in Appendix F. No This section must be completed. This Project meets the following condition: Condition A: 1) Runoff from the Project is discharged directly to a publicly-owned, operated and maintained MS4 or engineered and maintained channel, 2) the discharge is in full compliance with local land use authority requirements for connections and discharges to the MS4 (including both quality and quantity requirements), 3) the discharge would not significantly impact stream habitat in proximate Receiving Waters,and 4) the discharge is authorized by the local land use authority. Condition B: The project disturbs less than 1 acre and is not part of a larger common plan of development that exceeds 1 acre of disturbance. The disturbed area calculation must include all disturbances associated with larger plans of development. Condition C: The project's runoff flow rate, volume, velocity and duration for the post- development condition do not exceed the pre-development condition for the 2-year, 24-hour and 10-year 24-hour rainfall events. This condition can be achieved by, where applicable, complying with the local land use authority's on-site retention ordinance, or minimizing impervious area on a site and incorporating other Site-Design BMP concepts and LID/Site Design BMPs that assure non-exceedance of pre-development conditions. This condition must be substantiated by hydrologic modeling methods acceptable to the local land use authority. None:Refer to Section 3.4 of the Whitewater River Region WQMP Guidance document for additional requirements. Supporting engineering studies, calculations, and reports are included in Appendix C. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 11 V. Best Management Practices This project implements Best Management Practices (BMPs) to address the Pollutants of Concern that may potentially be generated from the use of the project site. These BMPs have been selected and implemented to comply with Section 3.5 of the WQMP Guidance document, and consist of Site Design BMP concepts, Source Control, LID/Site Design and, if/where necessary, Treatment Control BMPs as described herein. V.1 SITE DESIGN BMP CONCEPTS,LID/SITE DESIGN AND TREATMENT CONTROL BMPS Local Jurisdiction Requires On-Site Retention of Urban Runoff: Yes The project will be required to retain Urban Runoff onsite in conformance with local ordinance (See Table 6 of the WQMP Guidance document, "Local Land use Authorities Requiring Onsite Retention of Stormwater). The LID/Site Design measurable goal has thus been met (100%), and Sections V.1.A and V.1.B do not need to be completed; however, retention facility design details and sizing calculations must be included in Appendix F, and '100%' should be entered into Column 3 of Table 6 below. No Section V.1 must be completed. This section of the Project-Specific WQMP documents the LID/Site Design BMPs and, if/where necessary, the Treatment Control BMPs that will be implemented on the project to meet the requirements detailed within Section 3.5.1 of the WQMP Guidance document. Section 3.5.1 includes requirements to implement Site Design Concepts and BMPs, and includes requirements to address Pollutants of Concern with BMPs. Further, sub-section 3.5.1.1 specifically requires that Pollutants of Concern be addressed with LID/Site Design BMPs to the extent feasible. LID/Site Design BMPs are those BMPs listed within Table 2 below which promote retention and/or feature a natural treatment mechanism; off-site and regionally-based BMPs are also LID/Site Design BMPs, and therefore count towards the measurable goal, if they fit these criteria. This project incorporates LID/Site Design BMPs to fully address the Treatment Control BMP requirement where and to the extent feasible. If and where it has been acceptably demonstrated to the local land use authority that it is infeasible to fully meet this requirement with LID/Site Design BMPs, Section V.1.B (below) includes a description of the conventional Treatment Control BMPs that will be substituted to meet the same requirements.In addressing Pollutants of Concern, BMPs are selected using Table 2 below. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 12 Table 2. BMP Selection Matrix Based Upon Pollutant of Concern Removal Efficiency (1) (Sources: Riverside County Flood Control & Water Conservation District Design Handbook for Low Impact Development Best Management Practices, dated September 2011, the Orange County Technical Guidance Document for Water Quality Management Plans, dated May 19, 2011, and the Caltrans Treatment BMP Technology Report, dated April 2010 and April 2008) Pollutant of Concern Landscape Swale2, 3Landscape Strip2, 3Biofiltration (with underdrain)2, 3Extended Detention Basin2Sand Filter Basin2Infiltration Basin2Infiltration Trench2PermeablePavement2Bioretention (w/o underdrain)2, 3Other BMPs Including Proprietary BMPs4, 6Sediment & Turbidity MMH MHHHHH Varies by Product5Nutrients L/M L/M M L/M L/M H H H H Toxic Organic Compounds M/H M/H M/H L L/M H H H H Trash & Debris L L H H H H H L H Bacteria & Viruses (also: Pathogens)LMH LMHHHH Oil & Grease M M H M H H H H H Heavy Metals M M/H M/H L/M M H H H H Abbreviations: L: Low removal efficiency M: Medium removal efficiency H: High removal efficiency Notes: (1) Periodic performance assessment and updating of the guidance provided by this table may be necessary. (2) Expected performance when designed in accordance with the most current edition of the document, "Riverside County, Whitewater River Region Stormwater Quality Best Management Practice Design Handbook". (3) Performance dependent upon design which includes implementation of thick vegetative cover. Local water conservation and/or landscaping requirements should be considered; approval is based on the discretion of the local land use authority. (4) Includes proprietary stormwater treatment devices as listed in the CASQA Stormwater Best Management Practices Handbooks, other stormwater treatment BMPs not specifically listed in this WQMP (including proprietary filters, hydrodynamic separators, inserts, etc.), or newly developed/emerging stormwater treatment technologies. (5) Expected performance should be based on evaluation of unit processes provided by BMP and available testing data. Approval is based on the discretion of the local land use authority. (6) When used for primary treatment as opposed to pre-treatment, requires site-specific approval by the local land use authority. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 13 V.1.A SITE DESIGN BMP CONCEPTS AND LID/SITE DESIGN BMPS Based on Table 2 in this report, infiltration BMPs (retention basins) have high (H) removal efficiency for pathogens. Infiltration BMPs have high (H) removal efficiency for metals. These BMPs are also found to have high or medium (H/M) removal efficiency for sediment/turbidity; nutrients; oxygen demanding substances; and bacteria and viruses. Infiltration BMPs have unknown (U) removal efficiency for organic compounds; trash and debris; oil and grease; and non-soil bound pesticides. The project’s pollutant of concern category, bacteria and viruses (pathogens), is addressed with a high or medium (H/M) removal efficiency based on Table 2. Whitewater Ri The Liv May 10, 2022 Table 3. Implementation of Site Design BMP Concepts Included Brie Ind Design Concept Technique Specific BMP Yes No N/A Site Design BMP Concept 1 Minimize Urban Runoff, Minimize Impervious Footprint, and Conserve Natural Areas (See WQMP Section 3.5.1.3) Conserve natural areas by concentrating or clustering development on the least environmentally sensitive portions of a site while leaving the remaining land in a natural, undisturbed condition. The entire site Conserve natural areas by incorporating the goals of the Multi- Species Habitat Conservation Plan or other natural resource plans. The project is n area of the Coa site will be dev Preserve natural drainage features and natural depressional storage areas on the site. The project site features that co The existing en be preserved. Maximize canopy interception and water conservation by preserving existing native trees and shrubs, and planting additional native or drought tolerant trees and large shrubs. A majority of t and contains sc proposed lands drought toleran Use natural drainage systems.The site does n Where applicable, incorporate Self-Treating Areas The project do as self-treating Where applicable, incorporate Self-Retaining Areas The project do Increase the building floor to area ratio (i.e., number of stories above or below ground).The project pro Construct streets, sidewalks and parking lot aisles to minimum widths necessary, provided that public safety and a walkable environment for pedestrians are not compromised. Existing width maintained; sid requirements. P Reduce widths of streets where off-street parking is available.The project do Minimize the use of impervious surfaces, such as decorative concrete, in the landscape design. Landscaping im reduce impervi lot, a portion o project, is cons project does no or reduction of Whitewater Ri The Liv May 10, 2022 Other comparable and equally effective Site Design BMP concept(s) as approved by the local land use authority (Note: Additional narrative required to describe BMP and how it addresses site design concept). No other Site D Table 3. Site Design BMP Concepts (continued) Included Brief IndDesign Concept Technique Specific BMP Yes No N/A Site Design BMP Concept 2 Minimize Directly Connected Impervious Area (See WQMP Section 3.5.1.4) Design residential and commercial sites to contain and infiltrate roof runoff, or direct roof runoff to landscaped swales or buffer areas. Roof runoff fr and conveyed Drain impervious sidewalks, walkways, trails, and patios into adjacent landscaping. Incorporate landscaped buffer areas between sidewalks and streets. Use natural or landscaped drainage swales in lieu of underground piping or imperviously lined swales. Not part of th flows will prim surface flows conveyances. Where soil conditions are suitable, use perforated pipe or gravel filtration pits for low flow infiltration. Not proposed Maximize the permeable area by constructing walkways, trails, patios, overflow parking, alleys, driveways, low-traffic streets, and other low- traffic areas with open-jointed paving materials or permeable surfaces such as pervious concrete, porous asphalt, unit pavers, and granular materials. The existing p be modified b permeable pav an expansion The project in which will he impervious ar Use one or more of the following: Rural swale system: street sheet flows to landscaped swale or gravel shoulder, curbs used at street corners, and culverts used under driveways and street crossings. Not applicabl Urban curb/swale system: street slopes to curb; periodic swale inlets drain to landscaped swale or biofilter.Not applicabl Dual drainage system: first flush captured in street catch basins and discharged to adjacent vegetated swale or gravel shoulder; high flows connect directly to MS4s. Not applicabl Whitewater Ri The Liv May 10, 2022 Included Brief IndDesign Concept Technique Specific BMP Yes No N/A Other comparable and equally effective Site Design BMP concept(s) as approved by the local land use authority (Note: Additional narrative required to describe BMP and how it addresses site design concept). Infiltration BM flows. Use one or more of the following for design of driveways and private residential parking areas: Design driveways with shared access, flared (single lane at street), or wheel strips (paving only under the tires).Not applicabl Uncovered temporary or guest parking on residential lots paved with a permeable surface, or designed to drain into landscaping. Although the or guest parki guest parking surface. There design BMP f impervious ar Table 3. Site Design BMP Concepts (continued) Included Brief IndDesign Concept Technique Specific BMP Yes No N/A Site Design BMP Concept 2 (cont'd)Minimize Directly Connected Impervious Area (See WQMP Section 3.5.1.4) Other comparable and equally effective Site Design BMP concept(s) as approved by the local land use authority (Note: Additional narrative required to describe BMP and how it addresses site design concept). Not applicabl Use one or more of the following for design of parking areas: Where landscaping is proposed in parking areas, incorporate parking area landscaping into the drainage design. Impervious ar permeable pa Overflow parking (parking stalls provided in excess of the Permittee's minimum parking requirements) may be constructed with permeable pavement. Impervious ar permeable pa Other comparable and equally effective Site Design BMP (or BMPs) as approved by the local land use authority (Note: Additional narrative required describing BMP and how it addresses site design concept). No additional BMPs are pro 2. Landscapin help minimiz areas. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 17 Project Site Design BMP Concepts: Not applicable. Alternative Project Site Design BMP Concepts: Not Applicable. Whitewater Ri The Liv May 10, 2022 Table 4. LID/Site Design BMPs Meeting the LID/Site Design Measurable Goal (1) (2) (3) (4) (5) DRAINAGE SUB-AREA ID OR NO. LID/SITE DESIGN BMP TYPE* POTENTIAL POLLUTANTS OF CONCERN WITHIN DRAINAGE SUB-AREA POTENTIAL POLLUTANTS WITHIN SUB- AREA CAUSING RECEIVING WATER IMPAIRMENTS EFFECTIVENESS OF LID/SITE DESIGN BMP AT ADDRESSING IDENTIFIED POTENTIAL POLLUTANTS BM W D CR (See Table 2) (Refer to Table 1) (Refer to Table 1) (U, L, M, H/M, H; see Table 2) ( VBM PHASE 1 TOTAL TRIBUTARY AREA INFILTRATION/ RETENTION BASIN BACTERIA/VIRUS BACTERIA/VIRUS H 1,2 TOTAL PROJECT AREA TREATED WITH LID/SITE DESIGN BMPs (NEAREST 0 *LID/Site Design BMPs listed in this table are those that completely address the 'Treatment Control BMP req drainage sub-area. Whitewater River Region Final WQMP The Living Desert Entry Complex – Phase 2.5 May 10, 2022 19 Justification of infeasibility for sub-areas not addressed with LID/Site Design BMPs V.1.B TREATMENT CONTROL BMPS Conventional Treatment Control BMPs shall be implemented to address the project's Pollutants of Concern as required in WQMP Section 3.5.1 where, and to the extent that, Section V.1.A has demonstrated that it is infeasible to meet these requirements through implementation of LID/Site Design BMPs. The LID/Site Design BMPs described in Section V.1.A of this project-specific WQMP completely address the 'Treatment Control BMP requirement' for the entire project site (and where applicable, entire existing site) as required in Section 3.5.1.1 of the WQMP Guidance document. Supporting documentation for the sizing of these LID/Site Design BMPs is included in Appendix F. *Section V.1.B does not need to be completed. The LID/Site Design BMPs described in Section V.1.A of this project-specific WQMP do NOT completely address the 'Treatment Control BMP requirement' for the entire project site (or where applicable, entire existing site) as required in Section 3.5.1.1 of the WQMP.*Section V.1.B must be completed. The Treatment Control BMPs identified in this section are selected, sized and implemented to treat the design criteria of VBMP and/or QBMP for all project (and if required, existing site) drainage sub-areas which were not fully addressed using LID/Site Design BMPs. Supporting documentation for the sizing of these Treatment Control BMPs is included in Appendix F. Whitewater River The Living May 10, 2022 Table 5: Treatment Control BMP Summary (1) (2) (3) (4) (5) DRAINAGE SUB-AREA ID OR NO. TREATMENT CONTROL BMP TYPE* POTENTIAL POLLUTANTS OF CONCERN WITHIN DRAINAGE SUB- AREA POTENTIAL POLLUTANTS WITHIN SUB-AREA CAUSING RECEIVING WATER IMPAIRMENTS EFFECTIVENESS OF TREATMENT CONTROL BMP AT ADDRESSING IDENTIFIED POTENTIAL POLLUTANTS BMP W D CR (See Table 2) (Refer to Table 1) (Refer to Table 1) (U, L, M, H/M, H; see Table 2) (Id VBM PHASE 1 TOTAL TRIBUTARY AREA INFILTRATION/ RETENTION BASIN BACTERIA/VIRUS BACTERIA/VIRUS H 1,22 (20 of ca p TOTAL PROJECT AREA TREATED WITH TREATMENT CONTROL BMPs (NEAREST 0. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 21 V.1.C MEASURABLE GOAL SUMMARY This section documents the extent to which this project has met the measurable goal described in WQMP Section 3.5.1.1 of addressing 100% of the project's 'Treatment Control BMP requirement' with LID/Site Design BMPs. Projects required to retain Urban Runoff onsite in conformance with local ordinance are considered to have met the measurable goal; for these instances, '100%' is entered into Column 3 of the Table. Table 6: Measurable Goal Summary (1) (2) (3) Total Area Treated with LID/Site Design BMPs Total Area Treated with Treatment Control BMPs % of Treatment Control BMP Requirement addressed with LID/Site Design BMPs(Last row of Table 4) (Last row of Table 5) 3.36 0 100% Note: The calculations for Drainage Area C are provided in pages 3-4 of this report and in the WQMP Site Plan (Appendix B). Drainage Area C is calculated separately because it does not drain to the proposed on-site retention basin BMPs and the runoff is handled differently as described in pages 3-4. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 22 V.2 SOURCE CONTROL BMPS This section identifies and describes the Source Control BMPs applicable and implemented on this project. Table 7. Source Control BMPs BMP Name Check One If not applicable, state brief reasonIncluded Not Applicable Non-Structural Source Control BMPs Education for Property Owners, Operators, Tenants, Occupants, or Employees Activity Restrictions Irrigation System and Landscape Maintenance Common Area Litter Control Street Sweeping Private Streets and Parking Lots Drainage Facility Inspection and Maintenance Structural Source Control BMPs MS4 Stenciling and Signage Landscape and Irrigation System Design Protect Slopes and Channels Provide Community Car Wash Racks Not proposed Properly Design*: Fueling Areas Not proposed Air/Water Supply Area Drainage Not proposed Trash Storage Areas Loading Docks Not proposed. Maintenance Bays Not proposed Vehicle and Equipment Wash Areas Not proposed. Outdoor Material Storage Areas Not proposed Outdoor Work Areas or Processing Areas Not proposed Provide Wash Water Controls for Food Preparation Areas Not proposed *Details demonstrating proper design must be included in Appendix F. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 23 Non-Structural Source Control BMPs Education Program: Maintenance staff should be informed on topics related to stormwater pollution and prevention through various means, which can include the distribution of printed materials or public posting of rules or activity restrictions. A series of guidelines should be formulated and promoted to communicate beneficial habits and restricting harmful activities. Appendix D includes samples of the educational materials that can be used in implementing this project-specific WQMP. Activity Restrictions: The following activities should be prevented or prohibited on-site: littering; discharge and waste dumping into parking storm drain inlets; blowing, sweeping or hosing of debris into streets or parking lots; nuisance water flows from irrigation. Additional activity restrictions would be established in the future Declaration of Covenants, Conditions and Restrictions for the property. Irrigation System and Landscape Maintenance: Operation and Maintenance responsibilities and scheduling will be adhered to throughout the life of the project. The irrigation and landscape maintenance will help increase the effectiveness of these systems and minimize the amount of runoff that enters the storm drain system. Erosion and the conveyance of pesticides/fertilizers in runoff will also be prevented through routine maintenance. Routine irrigation system and landscape maintenance will also serve as a vector control measure due to the minimization of nuisance water runoff and stagnation. Common Area Litter Control: Common area litter control will be implemented to reduce pollution in runoff. Routine or scheduled monitoring (litter patrol) should be performed in the common areas, landscaped areas, parking lots, in and around the trash receptacles. Any observed accumulated trash, vegetation debris or improper disposal should be addressed promptly by the designated staff. Common area litter control measures can be coordinated and improved by the landscaping maintenance that will take place at the site. Moreover, the raking or sweeping of trash shall only be performed in manner that avoids trash from entering the storm drain system. All landscape-related debris or maintenance deficiencies are to be corrected immediately. Waste management will be implemented by The Living Desert at their existing designated facilities, which are outside of the Phase I project. Street Sweeping and Cleaning Street sweeping and cleaning should be performed on-site, specifically in the parking areas, to prevent sediment, litter and other debris from being washed by runoff into the on-site or municipal storm drain system. Street cleaning should be performed during dry weather if possible and the frequency should be flexible to accommodate climate conditions and areas of concern. Street sweeping equipment must be operated only by trained personnel based on the manufacturer’s specifications. Street sweeping equipment should be properly maintained; however, the equipment shall not be maintained or washed off on-site. All collected debris must be taken to an approved permanent disposal site. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 24 Structural Source Control BMPs The project will incorporate measures to discourage illegal dumping in the proposed private storm drain system. Additional details in regard will be provided in the Final WQMP. x MS4 Stenciling At each storm drain inlet, apply stenciling or signage with prohibitive language and/or graphical icons, which prohibit illegal dumping into the storm drain system. A stencil or fixed sign (including medallions) should contain a brief statement that prohibits dumping of improper materials into the urban runoff conveyance system. The legibility of markers and signs should be maintained throughout the life of the project. x Rules and Regulations Discharge prohibitions will be established based on the existing policies for The Living Desert. x Trash Receptacles Trash receptacles (for use by visitors) are expected to be installed at various. The specific placement of these containers is to be determined, but their location is intended to encourage proper trash disposal. The collection of trash from this project will be integrated into the existing waste management operations and handled at the existing designated areas outside of the Phase 2.5 project, but within The Living Desert campus. Landscape and Irrigation System Design The site’s structural source control BMP involves an efficient landscape irrigation design, which will be consistent with the City of Palm Desert Water Efficient Landscape Ordinance (Chapter 24.04). The system will include native or drought-tolerant plants and mechanisms to minimize excess irrigation and nuisance water into the stormwater conveyance system while working to reduce soil amendments and irrigation frequency. The system will also minimize the conveyance of landscape related chemicals, including pesticides. Trash Containers Waste will be collected by staff on a routine schedule. Waste management will be implemented by The Living Desert at their existing designated facilities, which are outside of the Phase 2.5 project. Trash containers shall be leak proof and have proper covers or lids. All trash shall be placed completely inside the containers and no trash shall be placed outside of the containers. Connection of trash to the MS4 shall be prohibited. Storm Drain System Facilities Catch basins and storm drainage facilities shall be inspected, cleaned, and maintained routinely. Maintenance staff will immediately repair malfunctioning facilities. Employees will immediately repair malfunctioning facilities. Slope Protection Maintenance will be the primary method to maintain slope protection. Routine maintenance will address potential instances of soil erosion. Slopes should be visually inspected on a quarterly basis or after major rainfall events. Physical obstructions caused by vegetation debris or littering should be cleared to ensure that the slopes continue to function as designed. Any material Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 25 collected (e.g. landscape debris or trash) should be properly handled and disposed of. Check for erosion and re-stabilize the slopes as needed. Record Keeping: Therefore, a copy of this project-specific WQMP shall be maintained by the project owner or operator. Records of maintenance shall be appended to this WQMP based on the information provided by the contracted management. V.3 EQUIVALENT TREATMENT CONTROL BMPALTERNATIVES Not applicable. V.4 REGIONALLY-BASED BMPS Not applicable. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 26 VI. Operation and Maintenance Responsibility for BMPs Operations and maintenance requirements for all on-site structural Source Control and Treatment Control BMPs shall be identified in the final project-specific WQMP Report. The Living Desert is the responsible party for assuring that the proper operations and maintenance take place. TABLE 8 -OPERATIONS AND MAINTENANCE BMP Requiring Maintenance Party Responsibility Inspection and Maintenance Frequency Self-Inspection and Record Keeping Implementation Period O & M Activities and Process Landscaped Areas The Living Desert via Contracted Management At least twice monthly or according to an existing maintenance schedule. Quarterly summaries of inspection and maintenance activities for each of the listed items should be appended to the WQMP by the project owner or designated staff. Post- Construction (See following page) Irrigation Systems The Living Desert via Contracted Management At least twice monthly or according to an existing maintenance schedule Post- Construction (See following page) Trash Management The Living Desert via Contracted Management Based on trash pick- up intervals Post- Construction (See following page) On-site Storm Drain System The Living Desert via Contracted Management Quarterly and after storm events or according to an existing maintenance schedule Post- Construction (See following page) Paved Area Sweeping The Living Desert via Contracted Management Twice monthly or according to a maintenance schedule Post- Construction (See following page) Common Area Litter Control The Living Desert via Contracted Management Quarterly or according to a maintenance schedule Post- Construction (See following page) Phase 2 & 3 Permanent Retention Basins The Living Desert via Contracted Management Quarterly, after storm events or according to a maintenance schedule Post- Construction (See following page) Phase 1 Temporary Retention Basins The Living Desert via Contracted Management Quarterly, after storm events or according to a maintenance schedule Post- Construction (See following page) Protection of Slopes The Living Desert via Contracted Management Quarterly, after storm events or according to a maintenance schedule Post- Construction (See following page) *Note: “Storm events” refer to precipitation events producing 0.5 inches of rain or greater within a 48-hour period. The occurrence of these events may be confirmed and documented against the local rain event summaries published in the National Oceanic and Atmospheric Administration web site (www.noaa.gov) or through other sources weather information. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 27 Description of Maintenance Requirements: Landscaped Areas:All trimming, pruning, and removal of fallen organic material from plants, shrubs, and trees are to be collected per the landscape maintenance plan, stored in an appropriate location, such as a green-waste collection facility approved by the City of Palm Desert. Any equipment or material temporarily staged during maintenance activities shall be placed away from drainage courses and storm drain inlets. Maintenance staff should haul collected material promptly following the maintenance activities to avoid on-site storage. The planting materials are to remain as indicated on the approved set of landscape planting plans. In conjunction with the routine activities, maintenance staff should verify that the landscape design continues to function properly by adjusting to eliminate overspray to hardscape areas and to verify that irrigation timing and cycle lengths are adjusted in accordance with water demands, given the time of year, weather and day or nighttime temperatures. Irrigation Systems:Water conservation is to be maintained at all times per the existing irrigation plans. Monitoring of the irrigation system is to be provided twice monthly to ensure that appropriate watering levels are maintained as well as to verify that no piping or irrigation heads are leaking. Debris/sediment/mineral deposits are to be removed from the irrigation system at regular intervals to provide consistent watering levels. Trash Containers: Trash containers shall be leak proof and have attached covers or lids. All trash shall be placed completely inside the containers and no trash shall be placed outside of the containers. Storm Drain System:Storm water conveyance systems, including inlets, outlets, cleanouts, manholes and pipelines within the project are to be inspected quarterly and after each major storm event or according to a maintenance schedule. All parts of the system are to be periodically cleaned to ensure that the system works properly during any storm event. Any waste collected from the cleaning activities is to be stored and properly disposed of. Paved Area Sweeping and Cleaning Paved area sweeping and cleaning should be performed on-site, specifically in the parking areas, to prevent sediment, litter and other debris from being washed by runoff into the storm drain system. Street cleaning should be performed during dry weather if possible and the frequency should be flexible to accommodate climate conditions and areas of concern. Street sweeping equipment must be operated only by trained personnel based on the manufacturer’s specifications. Street sweeping equipment should be properly maintained; however, the equipment shall not be maintained or washed on-site. All collected debris must be taken to an approved permanent disposal site. Common Area Litter Control: Common area litter control will be implemented to reduce pollution in runoff. Routine or scheduled monitoring (litter patrol) should be performed in the common areas, landscaped areas, parking lots and around the trash enclosures. Any observed accumulated trash, vegetation debris or improper disposal should be addressed promptly by the designated staff. Common area litter control measures can be coordinated and improved by the landscaping maintenance that will take place at the site. Moreover, the raking or sweeping of trash shall only be performed in manner that avoids trash from entering the storm drain system. All landscape-related debris or maintenance deficiencies are to be corrected immediately. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 28 Retention Basins (Temporary and Permanent): Retention chambers should be visually inspected on a quarterly basis and within 48 hours after a local rainfall event producing 0.5 inches or greater of precipitation within a 48-hour period. Physical obstructions should be cleared to ensure that the basins continue to function as designed. Any material collected (e.g. landscape debris or trash) should be properly handled and disposed of. The condition and effectiveness of the basin infiltration will depend in part on the maintenance procedures, such as those outlined below. Before annual storm seasons and following rainfall events: x Maintain landscaping as needed. x Remove debris and litter from the entire basin to minimize clogging and improve aesthetics. x Inspect for obvious problems and repair as needed. Address odor, insects, and overgrowth issues associated with stagnant or standing water in the basin bottom. There should be no long-term ponding water. x Check for erosion and sediment laden areas in the basin. Repair as needed. x Re-stabilize the basin slopes as needed per the original design. Perform inspections within 72 hours after a significant rainfall event as follows: x Examine the tributary inlets for blockage, the embankment and spillway integrity, as well as damage to any structural element. x Check for erosion, slumping and overgrowth. Repair as needed. x Check basin depth for sediment build up and reduced total capacity. Remove sediment deposition as needed. Restore to original cross-section and infiltration rate. Replant basin vegetation as needed. x Verify the basin bottom is allowing acceptable infiltration. x No water should be present 48 hours after an event. No long-term standing water should be present at all. No algae formation should be visible. Protection of Slopes and Channels: All proposed slopes will be subject to slope protection through maintenance, which will address potential instances of soil erosion. Slopes should be visually inspected on a quarterly basis or after major rainfall events. Physical obstructions caused should be cleared to ensure that the slopes continue to function as designed. Any material collected (e.g. landscape debris or trash) should be properly handled and disposed of. Check for erosion and re-stabilize the slopes as needed. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 May 10, 2022 29 Funding The funding source for the operations and maintenance of each BMP shall be the responsibility of The Living Desert. The owner recognizes that a source of funding is required to support the on-going operation and maintenance of BMPs, and that funding will continue for the life of the project. By certifying the final project specific WQMP, the Project applicant is certifying that the funding responsibilities have been addressed and will be transferred to future owners. Whitewater River Region Final WQMP The Living Desert– Phase 2.5 Appendix A Conditions of Approval Whitewater River Region Final WQMP The Living Desert– Phase 2.5 Appendix B Vicinity Map, WQMP Site Plan, and Receiving Waters Map 00.511.52 Mi.DATA SOURCES: RIVERSIDE COUNTY IT-GIS (OCTOBER, 2015), USGS, ESRI DATE: 12/22/2015 MAP OF RECEI PROJECT SITE DEEP CANYON STORMWATER CHANNEL WHITEWATER RIVER Whitewater River Region Final WQMP The Living Desert– Phase 2.5 Appendix C Supporting Detail Related to Hydrologic Conditions of Concern Whitewater River Region Final WQMP The Living Desert– Phase 2.5 Appendix D Educational Materials 8LITVMQEV]TYVTSWISJWXSVQHVEMRW HIZIPSTIHEVIEWXSTVIZIRXJPSSHMRK WXSVQHVEMRWEVIXVERWTSVXIHHMVIGXP] WXVIEQW7SETWHIKVIEWIVW ELSWXSJQEXIVMEPWEVI[EWLIHSJJFYMPHMRKW TEVOMRKEVIEW:ILMGPIWERHIUYMTQIRXQYWXF TVIZIRXXLITSPPYXMSRSJPSGEP[EXIV[E]W 9RMRXIRXMSREPWTMPPWF]QSFMPIWIVZMGISTIVEXSV GERJPS[MRXSWXSVQHVEMRWERHTSPPYXISYV [EXIV[E]W%ZSMHQMWLETW%P[E]WLEZIE7 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GSRHMXMSRW d /))4 ERMQEPW SYX SJ WXIEQW i (IWMKRIH WXVIEQ GVSWWMRKW TVSZMHI E WEJI IEW] [E] JSV LSVWIW ERH PMZIWXSGO XS JSVH WXVIEQW *IRGMRK IRGSYVEKIW XLI YWI SJ XLI GVSWWMRK MRWXIEH SJ XLI WXVIEQFIH XS REZMKEXI WXVIEQW 8LMW [MPP EPPS[ ZIKIXEXMSR XS WXEFMPM^I WXVIEQ FEROW ERHVIHYGIWIHMQIRXTSPPYXMSR d 13; TEWXYVIW XS TVSTIV LIMKLX WM\ MRGLIWMWX]TMGEPP]VIGSQQIRHIH d 1EXIVMEP 7836%+) 7%*)8= 8-47 i 1ER] SJ XLI GLIQMGEPW JSYRH MR FEVRW VIUYMVI GEVIJYP LERHPMRK ERH TVSTIV HMWTSWEP ;LIR YWMRK XLIWI GLIQMGEPW FIGIVXEMR XS JSPPS[ XLIWI GSQQSR WIRWI KYMHIPMRIW d &Y]SRP][LEX]SYRIIH [ Q TE [ 8 ]S IU ' PS Whitewater River Region Final WQMP The Living Desert– Phase 2.5 Appendix E Soils Report TheLivingDesert AlanMonroe,President/CEO 47900PortolaAvenue PalmDesert,California92260 FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714 GeotechnicalEngineeringandPercolationReport ProposedLivingDesertPhaseIEntry 47900PortolaAvenue PalmDesert,RiversideCounty,California      March30,2016                ©2016EarthSystemsSouthwest Unauthorizeduseorcopyingofthisdocumentisstrictlyprohibited withouttheexpresswrittenconsentofEarthSystemsSouthwest.   i EARTHSYSTEMSSOUTHWEST TABLEOFCONTENTS Page Section1INTRODUCTION...........................................................................................1 1.1ProjectDescription...........................................................................................1 1.2SiteDescription.................................................................................................1 1.3PurposeandScopeofServices.........................................................................1 Section2METHODSOFEXPLORATIONANDTESTING..................................................4 2.1FieldExploration...............................................................................................4 2.2LaboratoryTesting............................................................................................5 Section3DISCUSSION.................................................................................................6 3.1GeologicSetting................................................................................................6 3.2SoilConditions..................................................................................................6 3.3SiteReconnaissance..........................................................................................6 3.4Groundwater.....................................................................................................7 3.5Collapse/ConsolidationPotential.....................................................................8 3.6ExpansiveSoils..................................................................................................9 3.7Corrosivity.........................................................................................................9 3.8GeologicHazards............................................................................................11 3.8.1SeismicHazards........................................................................................11 3.8.2SecondaryHazards....................................................................................12 3.9RetentionBasinInfiltrationTesting................................................................14 Section4CONCLUSIONS...........................................................................................16 Section5RECOMMENDATIONS................................................................................17 SITEDEVELOPMENTANDGRADING...........................................................................17 5.1SiteDevelopment–Grading...........................................................................17 5.2ExcavationsandUtilityTrenches....................................................................19 5.3SlopeStabilityofGradedSlopes.....................................................................21 5.3.1SurficialSlopeFailures..............................................................................21 5.4ShallowFoundations.......................................................................................22 5.4.1EstimatedSettlementsforShallowFoundations.....................................23 5.5SlabsͲonͲGrade................................................................................................23 5.6SeismicDesignCriteria....................................................................................25 5.7RetainingWallsandLateralEarthPressures..................................................26 5.8SiteDrainageandMaintenance.....................................................................28 5.9ParkingandDrives..........................................................................................29 Section6LIMITATIONSANDADDITIONALSERVICES.................................................34 6.1UniformityofConditionsandLimitations.......................................................34 6.2AdditionalServices..........................................................................................36 REFERENCES..........................................................................................................37 TableofContents,continuedii   EARTHSYSTEMSSOUTHWEST APPENDIXA Plate1–SiteLocationMap Plate2–BoringandTestPitLocationMap Plate3through7(HistoricImages) TableAͲ1–FaultParameters TableAͲ2–HistoricEarthquakesinVicinityofProjectSite,M>5.5 TermsandSymbolsUsedonBoringLogs SoilClassificationSystem LogsofBorings SeismicSettlementCalculation SiteClassEstimator(2pages) APPENDIXB LaboratoryTestResults March30,20161FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714 GeotechnicalEngineeringandPercolationReport ProposedLivingDesertPhaseIEntry 47900PortolaAvenue PalmDesert,RiversideCounty,California  EARTHSYSTEMSSOUTHWEST Section1  INTRODUCTION 1.1 ProjectDescription ThisGeotechnicalEngineeringandPercolationReporthasbeenpreparedfortheproposed Phase1EntrywaytobelocatedattheLivingDesertinPalmDesert,RiversideCounty, California.Weassumethattheproposedimprovementsincludetwo,onetotwoͲstory buildingsandanearby40Ͳ50’tallentrytower.Thebuildingstotalapproximately7,000square feetandwehaveassumedwoodormetalframed,orconcretemasonrywallswithslabͲon gradefloors.Entrytowersareassumedtobeconstructedwitheithersteelorconcretethatare supportedbyconventionalshallowcontinuousorspreadfootings.Wehaveassumedthe structureswillcarryapproximately50kipsforcolumnfootingsand/or3kip/LFforcontinuous footings.Asthebasisforthefoundationrecommendations,allloadingisassumedtobedead plusactualliveload.Nopreliminarydesignloadingwasprovidedbythestructuralengineer.If actualstructuralloadingexceedstheseassumedvalues,wewillneedtoreevaluatethegiven recommendations.Belowgradelevelsarenotproposed.Additionalsitedevelopmentincludes clearingandgrubbingofvegetation,sitegrading,buildingpadpreparation,underground utilities,abasinanddrywellsforrunoffdetentionandpercolation,pavementareas,flatwork, concretedriveway,andsidewalkplacement.Basedonexistingsitetopographyandground conditions,sitegradingisexpectedtoconsistoffillsontheorderoflessthan5feet(excluding depthofoverͲexcavationforbuildings). 1.2 SiteDescription TheproposedEntryWayprojectislocatedsoutheastoftheLivingDesert’sAdministration Building(EarthSystems,geotechnicalreport,2004).Theoverallsiteisgenerallyundeveloped landwithintheexistingLivingDesertZoo|Gardens;however,theentrywayimprovementsare proposedwithinanareadevelopedwithparking,flatwork,andtrees.Undergroundutilities havebeenconstructedthroughthesite.Theprojectsiteisgenerallylocatedatanapproximate coordinateof33.69939°N/116.37336°W.Thesiteaddressis47900PortolaAvenue,Palm Desert,California92260.BasedonaconceptplanattachedinanemailfromMikeFontana,the sitehasageneralelevationontheorderofapproximately385feetabovemeansealevel. Topographicallythesiteisgenerallyflatandlevelwithdrainagebysheetflowtothenortheast. ThesitelocationisshownonPlate1. 1.3 PurposeandScopeofServices Thepurposeforourserviceswastoevaluatethesitesoilconditionsandtoprovideprofessional opinionsandrecommendationsregardingtheproposeddevelopmentofthesite.Thescopeof servicesincluded: March30,20162FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST 1. Surficialsiteconditionswerevisuallyassessedandselectedpublishedreportswere reviewedforthesite,includingpriorreportsbyEarthSystems. 2. NearͲsurfacesoilconditionswereexploredbymeansofdrillingfourexploratoryboringsat thesitewiththreeadditionalboringsintheproposedstormwaterretentionlocations. ExploratoryboringswereaccomplishedusingatruckͲmounteddrillingrigequippedwith hollowͲstemaugerswhichextendedtoamaximumdepthofapproximately6Ͳ1/2to41feet belowthegroundsurfaceortopracticalrefusal,whicheverwasless.Practicalrefusalwas metat3borings.Theboringswerebackfilledwithsoilderivedfromthedrilling.Theboring locationswerepreͲmarkedandclearedforundergroundutilitiesbyUndergroundService Alert.Theexposedsoilprofileswereobservedrelativetosoilandgroundwater (groundwaterwasnotencountered)conditions.Samplesofthesurfaceandsubsurface materialswerecollectedatvariousintervals,loggedbyourrepresentative,andreturnedto ourlaboratory. 3. Laboratorytestingwasperformedonselectedsoilsamplesobtainedfromtheexploratory borings.Suchtestingincludedunitdensities,moisturecontent,particlesizeanalysis, collapsepotential,directshear,moistureͲdensityrelationship,RͲValueforpavement sectiondesign,andsoilchemicalanalyses.Thesetestresultsaidedintheclassificationand evaluationofthepertinentengineeringpropertiesofthevarioussoilsencountered. 4. Engineeringanalysisofthedatageneratedfromthisstudywasperformedandawritten reportpreparedtopresentourfindingsandrecommendations,andincludesthefollowing: x Adescriptionoftheproposedprojectincludingasiteplanshowingtheapproximate boringlocations. x Adescriptionofthesurfaceandsubsurfacesiteconditionsincludinggroundwater conditions,asencounteredinourfieldexploration. x AdescriptionofthesitegeologicsettingandpossibleassociatedgeologyͲrelated hazards,includingaliquefaction,subsidence,andseismicsettlementanalysis. x Adiscussionofregionalgeologyandsiteseismicity. x Adescriptionoflocalandregionalactivefaults,theirdistancesfromthesite,their potentialforfutureearthquakes. x Adiscussionofothergeologichazardssuchasgroundshaking,landslides,flooding,and tsunamis. x Adiscussionofsiteconditions,includingthegeotechnicalsuitabilityofthesiteforthe generaltypeofconstructionproposed. x Aseismicanalysisincludingrecommendationsforgeotechnicalseismicdesign coefficientsinaccordancewiththe2013CBC. x Recommendationsforimportedfill(ifrequired)foruseincompactedfills. x Recommendationsforfoundationdesignincludingparametersforshallowfoundations, andbuildingpadandsubgradepreparation. March30,20163FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST x Anticipatedtotalanddifferentialsettlementsfortherecommendedfoundation system. x Recommendationsforlateralearthpressures(active,atͲrest,andpassive)forbelow gradestructuresandretainingwalls,includingdrainagerequirements,coefficientsof frictionandseismicearthpressures. x Recommendationsforsitepreparation,earthwork,slopesstabilityandinclination,and fillcompactionspecifications. x Discussionofanticipatedexcavationconditions,includingshrinkageand/orbulking. x Recommendationsforundergroundutilitytrenchbackfillandimportsoils. x Recommendationsforstabilityoftemporarytrenchexcavations. x Recommendationsforlocationspecificpercolationratesforstormwaterpurposes. x RecommendationsforslabsͲonͲgrade(buildingslabsandwalkways),including recommendationsforreducingthepotentialformoisturetransmissionthroughinterior slabs. x Recommendationsforcollapsibleorexpansivesoils(ifapplicable). x Preliminaryrecommendationsforasphaltconcrete(AC)andPortlandCementConcrete (PCC)pavementdesigncriteriaforparkinganddrivelaneareas. x AdiscussionofthecorrosionpotentialofthenearͲsurfacesoilsencounteredduringour fieldexploration. x Anappendix,whichincludesasummaryofthefieldexplorationandlaboratorytesting program. 5. IngeneralaccordancewiththeguidelinesoftheCountyofRiverside,thescopeofservices fortheinfiltrationtestingforstormwaterretentiongenerallyconsistedofthefollowing: x Twoboringsweredrilledattheproposedlocationsoftheretentionbasin(moats)and oneboringwasdrilledattheproposedlocationforadrywell.Boringswerecasedwith perforatedPVCpipeandgravel.TheboringswerepreͲsaturatedwithpotablewaterthe daybeforeanddayoftesting. x FieldpercolationtestingoftheboringswasperformedusingthefallingͲheadtest methodatdepthsof5Ͳ10and7Ͳ13feetbelowexistinggradesforthemoatsand20Ͳ40 feetbelowexistinggradeatthedrywelllocation. x Thedatawasorganizedandevaluatedtoidentifysubsurfacesitecharacteristicsand locationͲspecificinfiltrationratesforstormwaterdisposalattheelevationnearthe bottomoftheretentionbasins(moats)anddrywell.Theresultsofthisevaluationare presentedinthegeotechnicalengineeringreport. March30,20164FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Section2  METHODSOFEXPLORATIONANDTESTING 2.1 FieldExploration Sevenexploratoryboringsweredrilledtodepthsrangingfromabout6Ͳ1/2feetto41feet belowtheexistinggroundsurfacetoobservesoilprofilesandobtainsamplesforlaboratory testing.TheboringsweredrilledonMarch3,2016usingan8ͲinchoutsidediameterhollowͲ stemauger.AugerswerepoweredbyaCME75LARTrackdrillingrigwithandautomatictrip hammer,whichwassubcontractedwithCalPacDrillingofCalimesa,California.Theboring locationsareshownontheBoringLocationMap,Plate2,inAppendixA.Thelocationsshown areapproximate,establishedbyconsumergradeGlobalPositioningSystem(GPS)accurateto approximately15feetinconjunctionwithpacingbaseduponthecontrolprovided. AstaffscientistfromEarthSystemsmaintainedalogofthesubsurfaceconditionsencountered andobtainedsamplesforvisualobservation,classificationandlaboratorytesting.Subsurface conditionsencounteredintheboringswerecategorizedandloggedingeneralaccordancewith theUnifiedSoilClassificationSystem[USCS]andASTMD2487and2488(currentedition).Our typicalsamplingintervalwithintheboringswasapproximatelyevery2½to5feettothefull depthexplored;however,samplingintervalswereadjusteddependingonthematerials encounteredonsite.SampleswereobtainedwithinthetestboringsusingaStandard Penetration[SPT]sampler(ASTMD1586)andaModifiedCalifornia[MC]ringsampler (ASTMD3550withthosesimilartoASTMD1586).TheSPTsamplerhasa2Ͳinchoutside diameterandapproximate1.38Ͳinchinsidediameter.TheMCsamplerhasa3Ͳinchoutside diameterandapproximate2.4Ͳinchinsidediameter. BoththeringandSPTsamplersweremountedondrillrodanddrivenusingarigͲmounted140Ͳ poundautomatichammerfallingforaheightof30inches.Thenumberofblowsnecessaryto driveeitheraSPTsampleroraMCtyperingsamplerwithintheboringswasrecorded. DesignparametersprovidedbyEarthSystemsinthisreporthaveconsideredanestimated68% hammerefficiencybasedondataprovidedbythedrillingsubcontractor.Thenumberofblows necessarytodriveeitheraSPTsampleroraMCtyperingsamplerwithintheboringswas recorded.SincetheMCsamplerwasusedinourfieldexplorationtocollectringsamples,the NͲvaluesusingtheCaliforniasamplercanberoughlycorrelatedtoSPTNͲvaluesusinga conversionfactorthatmayvaryfromabout0.5to0.7.Ingeneral,aconversionfactorof approximately0.63fromastudyatthePortofLosAngeles(ZuegerandMcNeilan,1998per SP117A)isconsideredsatisfactory.Avalueof0.63wasappliedinourcalculationsforthis project. Bulksamplesofthesoilmaterialswereobtainedfromthedrillaugercuttings,representinga mixtureofsoilsencounteredatthedepthsnoted.Followingdrilling,sampling,andloggingthe boringswerebackfilledwithnativecuttingsandtampeduponcompletion.Ourfield explorationwasprovidedunderthedirectionofaregisteredGeotechnicalEngineerfromour firm. March30,20165FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Thefinallogsoftheboringsrepresentourinterpretationofthecontentsofthefieldlogsand theresultsoflaboratorytestingperformedonthesamplesobtainedduringthesubsurface exploration.ThefinallogsareincludedinAppendixAofthisreport.Thestratificationlines representtheapproximateboundariesbetweensoiltypes,althoughthetransitionsmaybe gradational.Inreviewingthelogsandlegend,thereadershouldrecognizethatthelegendis intendedasaguidelineonly,andthereareanumberofconditionsthatmayinfluencethesoil characteristicsobservedduringdrilling.Theseinclude,butarenotlimitedto,thepresenceof cobblesorboulders,cementation,variationsinsoilmoisture,presenceofgroundwater,and otherfactors. TheboringlogspresentfieldblowͲcountsper6inchesofdrivenembedment(orportion thereof)foratotaldrivendepthattemptedof18inches.TheblowͲcountsonthelogsare uncorrected(i.e.notcorrectedforoverburden,sampling,etc.).Consequently,theusermust correcttheblowͲcountsperstandardmethodologyiftheyaretobeusedfordesignand exercisejudgmentininterpretingsoilcharacteristics,possiblyresultinginsoildescriptionsthat varysomewhatfromthelegend. 2.2 LaboratoryTesting Sampleswerereviewedalongwithfieldlogstoselectthosethatwouldbeanalyzedfurther. Thoseselectedforlaboratorytestingincludesoilsthatwouldbeexposedandusedduring gradingandthosedeemedtobewithintheinfluenceoftheproposedstructures.Testresults arepresentedingraphicandtabularforminAppendixBofthisreport.Thetestswere conductedingeneralaccordancewiththeproceduresoftheAmericanSocietyforTestingand Materials[ASTM]orotherstandardizedmethodsasreferencedbelow.Ourtestingprogram consistedofthefollowing: ¾DensityandMoistureContentofselectsamplesofthesitesoils(ASTMD2937&2216). ¾MaximumdensityteststoevaluatethemoistureͲdensityrelationshipoftypicalsoils encountered(ASTMD1557). ¾ParticleSizeAnalysistoclassifyandevaluatesoilcomposition.Thegradation characteristicsofselectedsamplesweremadebysieveanalysisprocedures(ASTMD 6913). ¾Directsheartestingtoestimateshearstrengthcharacteristics(ASTMD3080). ¾Consolidation/CollapsePotentialtoevaluatethecompressibilityandhydroconsolidation (collapse)potentialofthesoiluponwetting(ASTMD5333). ¾ChemicalAnalyses(SolubleSulfatesandChlorides(ASTMD4327),pH(ASTMD1293), andElectricalResistivity/Conductivity(ASTMD1125)toevaluatethepotentialfor adverseeffectsofthesoilonconcreteandsteel. ¾RͲValuetestingtoevaluatepavementsupportcharacteristics(CTM301). March30,20166FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Section3  DISCUSSION 3.1 GeologicSetting RegionalGeology:ThesitelieswithintheCoachellaValley,apartoftheColoradoDesert geomorphicprovince.AsignificantfeaturewithintheColoradoDesertgeomorphicprovinceis theSaltonTrough.TheSaltonTroughisalargenorthwestͲtrendingstructuraldepressionthat extendsapproximately180milesfromtheSanGorgonioPasstotheGulfofCalifornia.Muchof thisdepressionintheareaoftheSaltonSeaisbelowsealevel.  TheCoachellaValleyformsthenortherlypartoftheSaltonTrough.TheCoachellaValley containsathicksequenceofMiocenetoHolocenesedimentarydeposits.Mountains surroundingtheCoachellaValleyincludetheLittleSanBernardinoMountainsonthenortheast, foothillsoftheSanBernardinoMountainsonthenorthwest,andtheSanJacintoandSanta RosaMountainsonthesouthwest.ThesemountainsexposeprimarilyPrecambrian metamorphicandMesozoicgraniticrocks.TheSanAndreasfaultzonewithintheCoachella ValleyconsistsoftheGarnetHillfault,theBanningfault,andtheMissionCreekfaultthat traversealongthenortheastmarginofthevalley.  LocalGeology:Theprojectsiteislocatedapproximately1,100feetwestoftheDeepCanyon Washand385feetabovemeansealevelinthewesternpartoftheCoachellaValley.TheonͲ sitesedimentsconsistofalluvial(Holocene)fineͲtocoarseͲgrainedsandswithinterbedded silts,gravels,andcobbles. 3.2 SoilConditions Thefieldexplorationindicatesthatsitealluvialsoilsconsistgenerallyofwellandpoorlygraded sandswithvaryingamountsofsiltandgravel(UnifiedSoilsClassificationSystemsymbolsofSP andSW,SPͲSM,andSWͲSM).Gravelsizesvariedfromfinegravelinsomelocationstofineto coarsegravelinotherlocations.Outof7borings,3oftheboringshitrefusalat11feet,26feet, and41feet.AccordingtotheUSDASoilConservationServicewebsite,theprojectsite’ssurface soilsaredefinedasRiverwash.Cobbleswereidentifiedduringtheexplorationandnearby stockpilesindicatedapproximately10to15%oversize(+6inchrock).Boulderswereobserved onthesurface,butarenotedalongthenearbymountainousslopes,andsincethisprojectis withintheDeepCanyonWash,bouldersshouldbeexpectedduringgradingoperations.The boringlogsprovidedinAppendixAincludemoredetaileddescriptionsofthesoilsencountered. Thesitelieswithinarecognizedblowsandhazardarea.Fineparticulatematter(PM10)can createanairqualityhazardifdustisblowing.Wateringthesurface,plantinggrassor landscaping,orplacinghardscapenormallyreducesthishazard. 3.3 SiteReconnaissance EarthSystemspersonnelvisitedthesiteonFebruary17andMarch3,2016,toobservecurrent siteconditionsandadjacentlanduse.ThesitelayoutispresentedinPlate2.Asummaryofour findingsispresentedbelow: March30,20167FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST x Thesitewasobservedtoconsistofsomedevelopedandundevelopedlandwith undergroundutilitieswithintheprojectsite.Pastgradinghasoccurred. x Basedonhistoricalaerialphotographs(seePlates3through7inAppendixA), improvementswithintheprojectsitehaveoccurredsince2002: ¾In2004,thesitehadbeenclearedofmostsomenativevegetationandwhatlookslikea fencehasbeeninstalled; ¾The2009imageshowsthefencehasbeenremovedandtheAdministrationBuilding constructed; ¾The2011imageshowsinthemiddleoftheimagetheadditionofsmallstructureswith possiblefencing; ¾The2012imageshowsnotmuchdifferencefromwhatwasnoticedduringthefieldsite visitsin2016. x StockpilesofnativesoilswereobservednearboringsBͲ2,BͲ3,BͲ4,andBͲ5.Thestockpile materiallookedlikeprimarilynativesoil. 3.4 Groundwater Thissectionwilldiscussgroundwaterlevelsbetween1967andthepresent.Also,the“Recent ExplorationInformation”sectionprovidesabriefdiscussionofthemoisturecontentsofthe soilsfoundduringtheexploration.Groundwaterlevelsmayfluctuatewithprecipitation, irrigation,drainage,regionalpumpingfromwells,andsitegrading. RecentExplorationInformation Freegroundwaterwasnotencounteredinanyboringsduringtheexplorationconductedin March,2016.Ourdeepestboringreachedanapproximatedepthof41feetbelowtheground surface(bgs),butallhadvisualmoisturecontentsofdampandmoist,dampbeingmore prevalent. NearbyWellInformation WeresearchedtheCaliforniaDepartmentofWaterResources(DWR)groundwaterdatabase andfoundonewellwestoftheproject.Well1(StateWellNo.:05S06E16A003S)isfound approximately5,500LFnorthwestoftheproject.ThereadingfromthewellisprovidedinTable 1. March30,20168FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Table1 GroundwaterEstimatefromNearbyWells WellIDDate (mm/dd/year) GSE (ft) WSE (ft) Depth (ft) Comments ProjectSite3/3/2016385NotFound>41ft WellNo.1**11/28/20111000784.2215.8Southofproject WellNo.110/02/20151000758.7241.3*** **ͲWellsite1islocatedatlatitude/longitudeof33.6485/Ͳ116.377667 ***ͲWellreadingindicateadropingroundwaterfrom2011to2015.  HistoricGroundwaterInformation Basedonourreviewofthe1961GroundWaterBasinSubdivisionsandContoursofGround WaterLevelsMap,publishedbytheResourcesAgencyofCaliforniaDepartmentofWater ResourcesSouthernDistrict(DepartmentofWaterResourcesBulletin108),thehistoric groundwatercontournearesttheprojectisapproximately90feetaboveMeanSeaLevel.For thisWSE,thedepthtogroundwateratthesiteisapproximately295feetbgs. EstimatedProjectGroundwaterDepth Knowingthesitehasanapproximatesurfaceelevationof385feetandtheinformation providedinTable1aboveandBulletin108,thecurrentandhistoricdepthofgroundwater belowtheprojectscurrentgroundsurfaceisover100feet.Groundwaterlevelsmayfluctuate withprecipitation,irrigation,drainage,regionalpumpingfromwells,sitegrading,andnearby faults. 3.5 Collapse/ConsolidationPotential Collapsiblesoildepositsgenerallyexistinregionsofmoisturedeficiency.Collapsiblesoilsare generallydefinedassoilsthathavepotentialtosuddenlydecreaseinvolumeuponincreasein moisturecontentevenwithoutanincreaseinexternalloads.Soilssusceptibletocollapse includeloess,weaklycementedsandsandsiltswherethecementingagentissoluble(e.g. solublegypsum,halite),valleyalluvialdepositswithinsemiͲaridtoaridclimate,andcertain graniteresidualsoilsabovethegroundwatertable. Inaridclimaticregions,granularsoilsmayhaveapotentialtocollapseuponwetting.Collapse (hydroconsolidation)mayoccurwhenthesolublecements(carbonates)inthesoilmatrix dissolve,causingthesoiltodensifyfromitslooseconfigurationfromdeposition. ThedegreeofcollapseofasoilcanbedefinedbytheCollapsePotential[CP]value,whichis expressedasapercentofcollapseofthetotalsampleusingtheCollapsePotentialTest(ASTM StandardTestMethodD5333).BasedontheNavalFacilitiesEngineeringCommand(NAVFAC) DesignManual7.1,theseverityofcollapsepotentialiscommonlyevaluatedbythefollowing Table2,CollapsePotentialValues. March30,20169FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Table2 CollapsePotentialValues CollapsePotentialValueSeverityofProblem 0Ͳ1%NoProblem 1Ͳ5%ModerateProblem 5Ͳ10%Trouble 10Ͳ20%SevereTrouble >20%VerySevereTrouble  Theprojectsiteislocatedinageologicenvironmentwherethepotentialforcollapsiblesoilcan exist.Theresultsofcollapsepotentialtestsperformedonselectedsamplesfromdifferent depthsindicatedarangeofcollapsepotentialontheorderof0.4to1.8percentatanapplied verticalstressof2,000psf.Theaveragecollapsepotentialfor4testresultsis1.3%.Earth Systems’opinionisthatthesitehasalowpotentialforcollapsebecausesampleswerenot foundtobecemented,densitiesweregenerallyhigh,soilsarecoarsegrainedsandandgravel, andverylittlesiltisfoundinthesamples.Itisouropinionthatthesitesoilshavealow potentialforcollapse.Collapserelatedsettlementisestimatedtobeminor. 3.6 ExpansiveSoils Expansivesoilsarecharacterizedbytheirabilitytoundergosignificantvolumechange(shrink orswell)duetovariationsinmoisturecontent.Changesinsoilmoisturecontentcanresult fromrainfall,landscapeirrigation,utilityleakage,roofdrainage,perchedgroundwater,drought, orotherfactors,andmaycauseunacceptablesettlementorheaveofstructures,concreteslabs supportedͲonͲgrade,orpavementssupportedoverthesematerials.Dependingontheextent andlocationbelowfinishedsubgrade,expansivesoilscanhaveadetrimentaleffecton structures.Basedonthegranularnatureofsoildepositsencounteredintheuppersoils,the ExpansionIndexoftheonsitesoilsis“verylow”asdefinedbyASTMD4829andthe2013 CaliforniaBuildingCode.Samplesofbuildingpadsoilsshouldbeobservedortestedduring gradingtoconfirmormodifythesefindings. 3.7 Corrosivity OnesampleofthenearͲsurfacesoilwithinthesiteareawastestedforpotentialtocorrosionof concreteandferrousmetals.ThetestswereconductedingeneralaccordancewiththeASTM testmethodstoevaluatepH,resistivity,andwaterͲsolublesulfateandchloridecontent.The testresultsarepresentedinAppendixB. WaterͲsolublesulfatesinsoilcanreactadverselywithconcrete.ACI318providesthe relationshipbetweencorrosivitytoconcreteandsulfateconcentration,presentedinthetable below: March30,201610FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Table3 SulfateCorrosionCorrelations WaterͲSolubleSulfateinSoil (ppm)CorrosivitytoConcrete 0Ͳ1,000Negligible 1,000–2,000Moderate 2,000–20,000Severe Over20,000VerySevere  Ingeneral,thelowerthepH(themoreacidictheenvironment),thehigherthesoilcorrosivity willbewithrespecttoferrousstructuresandutilities.AssoilpHincreasesabove7(theneutral value),thesoilisincreasinglymorealkalineandlesscorrosivetoburiedsteelstructures,dueto protectivesurfacefilms,whichformonsteelinhighpHenvironments.ApHbetween5and8.5 isgenerallyconsideredrelativelypassivefromacorrosionstandpoint.Highchloridelevelstend toreducesoilresistivityandbreakdownotherwiseprotectivesurfacedeposits,whichcan resultincorrosionofburiedsteelorreinforcedconcretestructures.Soilresistivityisameasure ofhoweasilyelectricalcurrentflowsthroughsoilsandisthemostinfluentialfactor.Basedon thefindingsofstudiespresentedinASTMSTP1013titled“EffectsofSoilCharacteristicson Corrosion”(February,1989),theapproximaterelationshipbetweensoilresistivityandsoil corrosivitywasdevelopedasshowninTable4. Table4 ResistivityCorrosionCorrelations SoilResistivity (OhmͲcm)CorrosivitytoFerrousMetals 0to900VerySeverelyCorrosive 900to2,300SeverelyCorrosive 2,300to5,000ModeratelyCorrosive 5,000to10,000MildlyCorrosive 10,000to>100,000VeryMildlyCorrosive Testresults(presentedinAppendixB)showapHvalueof9.4,chloridecontentof2ppm, sulfatecontentof10ppm,andresistivityof11,025OhmͲcm.Thesetestsshouldbeconsidered asonlyanindicatorofcorrosivityforthesampletested.Otherearthmaterialsfoundonsite maybemore,less,orofasimilarcorrosivenature.AlthoughEarthSystemsdoesnotpractice corrosionengineering,thecorrosionvaluesfromthesoiltestedarenormallyconsideredas beingverymildlycorrosivetoburiedmetalsandaspossessinga“negligible”exposuretosulfate attackforconcreteasdefinedinAmericanConcreteInstitute(ACI)318,Section4.3.Theabove valuescanpotentiallychangebasedonseveralfactors,suchasimportingsoilfromanotherjob siteandthequalityofconstructionwaterusedduringgradingandsubsequentlandscape March30,201611FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST irrigation.Assuch,werecommendanengineercompetentincorrosionmitigationreviewthe resultsofEarthSystemsreportsanddesigncorrosionprotectionappropriately. 3.8 GeologicHazards Geologichazardsthatmayaffecttheregionincludeseismichazards(groundshaking,surface faultrupture,soilliquefaction,andothersecondaryearthquakeͲrelatedhazards),slope instability,flooding,groundsubsidence,anderosion.Adiscussionfollowsonthespecific hazardstothissite. 3.8.1 SeismicHazards SeismicSources:Severalactivefaultsorseismiczonesliewithin62miles(100kilometers)of theprojectsiteasshownonTableAͲ1inAppendixA.Theprimaryseismichazardtothesiteis stronggroundshakingfromearthquakesalongtheSanAndreasandSanJacintofaults.The MaximumMagnitudeEarthquake(Mmax)listedisfrompublishedgeologicinformationavailable foreachfault(Caoetal.,CGS,2003).TheMmaxcorrespondstothemaximumearthquake believedtobetectonicallypossible. SurfaceFaultRupture:TheprojectsitedoesnotliewithinacurrentlydelineatedStateof California,AlquistͲPrioloEarthquakeFaultZone(Bryant,2007).WellͲdelineatedfaultlinescross throughthisregionasshownonCaliforniaGeologicalSurvey(CGS)maps(Jennings,2010); however,noactivefaultsaremappedintheimmediatevicinityofthesite.Therefore,active faultruptureisunlikelytooccurattheprojectsite.Whilefaultrupturewouldmostlikelyoccur alongpreviouslyestablishedfaulttraces,futurefaultrupturecouldoccuratotherlocations. SegmentsoftheSanAndreasfaultarelocatedapproximately8.8milesnortheastofthesite. ThesesegmentsofthefaultzonearewellͲrecognizedwithknownactivesurfacefaultrupture. HistoricSeismicity:ThesiteislocatedwithinanactiveseismicareaofsouthernCalifornia wherelargenumbersofearthquakesarerecordedeachyear.Approximately37magnitude5.5 orgreaterearthquakeshaveoccurredwithin60milesofthesitesince1856.Sixhistoricseismic events(5.9Morgreater)havesignificantlyaffectedtheCoachellaValleyinthelast100years, (TableAͲ2).Theyareasfollows: y DesertHotSpringsEarthquake–OnDecember4,1948,amagnitude6.5ML(6.0MW) earthquakeoccurredeastofDesertHotSprings.ThiseventwasstronglyfeltinthePalm Desertarea. y PalmSpringsEarthquake–Amagnitude5.9ML(6.2MW)earthquakeoccurredonJuly8, 1986inthePaintedHills,causingminorsurfacecreepoftheBanningsegmentoftheSan Andreasfault.ThiseventwasstronglyfeltinthePalmDesertareaandcausedstructural damage,aswellasinjuries. y JoshuaTreeEarthquake–OnApril22,1992,amagnitude6.1ML(6.1MW)earthquake occurredinthemountains9mileseastofDesertHotSprings.Structuraldamageandminor injuriesoccurredinthePalmDesertareaasaresultofthisearthquake. March30,201612FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST y LandersandBigBearEarthquakes–EarlyonJune28,1992,amagnitude7.5MS(7.3MW) earthquakeoccurrednearLanders,thelargestseismiceventinSouthernCaliforniafor 40years.SurfaceruptureoccurredjustsouthofthetownofYuccaValleyandextended some43milestowardBarstow.Aboutthreehourslater,amagnitude6.6MS(6.4MW) earthquakeoccurrednearBigBearLake.Nosignificantstructuraldamagefromthese earthquakeswasreportedinthePalmDesertarea. y HectorMineEarthquake–OnOctober16,1999,amagnitude7.1MWearthquakeoccurred ontheLavicLakeandBullionMountainfaultsnorthofTwentyninePalms.Whilethisevent waswidelyfelt,nosignificantstructuraldamagehasbeenreportedintheCoachellaValley.  SeismicRisk:Whileaccurateearthquakepredictionsarenotpossible,variousagencieshave conductedstatisticalriskanalyses.In2002and2008,theCaliforniaGeologicalSurvey(CGS) andtheUnitedStatesGeologicalSurvey(USGS)completedthelatestgenerationofprobabilistic seismichazardmaps.Wehaveusedthesemapsinourevaluationoftheseismicriskatthesite. TheWorkingGroupofCaliforniaEarthquakeProbabilities(WGCEP,2008)estimateda58% conditionalprobabilitythatamagnitude6.7orgreaterearthquakemayoccurbetween2008 and2038alongthesouthernsegmentoftheSanAndreasfault. TheprimaryseismicriskatthesiteisapotentialearthquakealongtheSanAndreasfault.The lastruptureoccurredabout1690AD,basedondatingbytheUSGSnearIndio(WGCEP,2008). Thissegmenthasalsorupturedonabout1020,1300,and1450AD,withanaveragerecurrence intervalofabout220years.TheSanAndreasfaultmayruptureinmultiplesegments,producing ahighermagnitudeearthquake.RecentpaleoseismicstudiessuggestthattheSanBernardino MountainSegmenttothenorthandtheCoachellaSegmentmayhaverupturedtogetherin 1450and1690AD(WGCEP,1995). 3.8.2 SecondaryHazards Secondaryseismichazardsrelatedtogroundshakingincludesoilliquefaction,ground subsidence,tsunamis,andseiches. SoilLiquefaction,DrySeismicSettlement,andLateralSpreading:Liquefactionisthelossofsoil strengthfromsuddenshock(usuallyearthquakeshaking),causingthesoiltobecomeafluid mass.Liquefactiondescribesaphenomenoninwhichsaturatedsoillosesshearstrengthand deformsasaresultofincreasedporewaterpressureinducedbystronggroundshakingduring anearthquake.Dissipationoftheexcessporepressureswillproducevolumechangeswithin theliquefiedsoillayer,whichcancausesettlement.Shearstrengthreductioncombinedwith inertialforcesfromthegroundmotionmayalsoresultinlateralmigration(lateralspreading) towardsa“freeface”.Factorsknowntoinfluenceliquefactionincludesoiltype,structure, grainsize,relativedensity,confiningpressure,depthtogroundwater,andtheintensityand durationofgroundshaking.Soilsmostsusceptibletoliquefactionaresaturated,loosesandy soilsandlowplasticityclayandsilt.Thesesoiltypesarepresentthroughoutthesitearea. Liquefaction,lateralspreading,anddrysandsettlementwereevaluatedconsidering informationcontainedwithinRecommendedProceduresforImplementationofDMGSpecial Publication117,GuidelinesforAnalyzingandMitigatingLiquefactionHazardsinCalifornia, publishedbySouthernCaliforniaEarthquakeCenter(SCEC),datedMarch1999andGuidelines March30,201613FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST forAnalyzingandMitigatingSeismicHazardsinCalifornia,SpecialPublication117A,published byCaliforniaGeologicalSociety(CGS),2008. Ingeneral,fortheeffectsofliquefactiontobemanifestedatthesurface,groundwaterlevels mustbewithin50feetofthegroundsurfaceandthesoilswithinthesaturatedzonemustalso besusceptibletoliquefaction.Currentandhistoricgroundwaterconditionsinthesiteareaare greaterthanapproximately100feetbelowtheexistinggroundsurface.Liquefactionistypically limitedtotheupper50feetofthesubsurfacesoils.Inaddition,perchedwaterzonewasnot encounteredduringtheexploration.Assuch,thepotentialforliquefactionisconsideredlow. TheDeadIndianCreekandDeepCanyonStormwaterChannelarelocatedimmediatelywest andeastoftheprojectsite.Thesestormwaysrepresentsa“freeface”,whereifliquefaction wouldoccur,lateralspreadingmightbeahazard.Historichighstaticgroundwaterlevelswere estimatedtobeatelevationofapproximately90feetaboveMSL,seeSection3.3.Therefore, thehistoricgroundwaterisapproximately295feetbelowprojectelevation.Duringseasonal floodinginthechannel,shortͲtermsaturatedsoilswilloccurinthechannelbottom.However, weestimatethatmigrationofsaturatedconditionsbeyondthechannelbottom,inthetime periodthatthechannelcontainsflowingwater,willbepredominantlyinadownwarddirection duetothesandynatureofsitesoilssuchthatsaturationofsoilsundertheprojectsitesare unlikely.Thereforetherearenoapparentliquefiablezoneswithintheupper50feetofsoil profile,indicatinganegligiblepotentialforlateralspreading. DrySeismicSettlement Drysandstendtosettleanddensifywhensubjectedtostrongearthquakeshaking.Theamount ofsubsidenceisdependentontherelativedensityofthesoil,groundmotion,andearthquake duration.WehavebasedouranalysisonmethodssuggestedbyTokimatsuandSeedandusing boringdata.Wehaveconsideredan8.18magnitudeearthquakeassociatedwithamultiͲ segmentruptureoftheSanAndreasfault.Forseismicsettlementevaluations,wereducedthe siteaccelerationto(2/3)PGAM,whichis0.34g,asallowedbyCGS(JenniferThornburg,2014). Baseduponthe41footboring(BͲ6),ourcurrentanalysesandconsideringagencyguidelines, weestimatethatabout0.2inchesoftotalgroundsettlementmaystilloccurintheupper 50feetofsoils.  Wehaveevaluateddifferentialsettlementbybothconsideringthatdifferentialsettlementis typicallyobservedtobe1/2ofthetotalsettlement(CaliforniaGeologicalSociety,Special Publication117A,2008),andhaveconsideredthatdifferentialsettlementcanalsobeevaluated consideringthemaximumdifferencebetweensimilar,adjacentboringsandappliedovera typicalfoundationlength(40feet).However,aseconddeepboringwasnotachievabledueto explorationboringrefusal.Ouranalysesalsoconsidersthecumulativeeffectofdifferential settlement(distortion)duetostaticloading,seeSection5.4.1forthecombinationofseismic andstaticsettlements.Ourestimateofdifferentialsettlementis0.10inches.  GroundSubsidence:Thelatestreportforsubsidenceinformation(Sneed,2014)indicatesthis projectliessouthofPalmDesertArea1andIndianWellsArea2,whicharesubsidencestudy March30,201614FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST areas(Sneed,Figure8,pp25).Therefore,thepotentialforarealsubsidencesettlementis considered“low”.  SlopeInstability:Theprojectsiteisrelativelyflatdesert.Therefore,potentialhazardsfrom globalslopeinstabilityandlandslidesareconsideredlow. Flooding:AccordingtoaFloodEmergencyManagementAgency(FEMA)FloodInsuranceRate Map(FIRM),MapNumber06065C2228G,MapEffectiveDateAugust28,2008,Panel2228of 3805theprojectsite(circulararea)lieswithinaFEMAdesignatedzoneofZoneX(hatched).  Figure1FEMAMapwithProjectSite ZoneX(hatch)Ͳ“Areasof0.2%annualchanceflood;areasof1%annualchancefloodwith averagedepthsoflessthan1footorwithdrainageareaslessthan1squaremile;andareas protectedbyleveesfrom1%annualchanceflood.” 3.9 RetentionBasinInfiltrationTesting Threeexploratoryboringsweredrilledtodepthsofapproximately11and30feetbelowthe existinggroundsurfacetoobservesoilprofiles,obtainsamplesforlaboratorytesting,and performpercolationtesting.ThepercolationboringlocationsareshownontheBoringLocation Map,Plate2,inAppendixA. Toevaluatethepercolationrateoftheshallowsoilsencountered,percolationtestingwas performed.EightͲinchdiameterboringswerecasedwith3”perforatedPVCpipeand3/4” graveltominimizesoilcaving.ThepresenceofgravelandthePVCpipewereaccountedforin theinfiltrationratecalculation.TheboringswerepreͲsaturatedwithpotablewateratleast24 March30,201615FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST hourspriortotestingandagainimmediatelypriortotesting.Fieldpercolationtestingwas performedusingthefallingͲheadtestmethodrunoveraperiodof2to4hourswiththewater levelmeasuredevery10minutes.Thepercolationresultswerecorrectedtoapproximate infiltrationratesusingHvorslevtechniquestoconsidermainlybottominfiltration(i.e.basins, wherethebottominfiltrationisthemajorityofinfiltratingareaandsidewallareaissmall).Test resultsaretypicallyfordepthsbetween5and13feetforpercolationtestsPͲ2andPͲ3and20 to40feetforpercolationtestPͲ1.Depthsarebelowexistinggradeatthetestlocations. Table5 RetentionBasinInfiltrationResults Test Pit Test Description Soil Condition USCSSoilDescriptioninTest Zone Test Zone Below Existing Grade (feet) Estimated Basic Infiltration Rate* In/hr Estimated Percolation Rate (gal/sqft/day) PͲ1**FallingHeadAlluviumPoorlyGradedSand(SP)20Ͳ40 ͲͲ164 PͲ2**FallingHeadAlluviumWellGradedSand(SW)5Ͳ106.1228 PͲ3**FallingHeadAlluviumWellGradedSand(SW)7Ͳ137.8270 *FieldValues,Nofactorofsafetyapplied.Typicalfactorsofsafetyrangefrom3to10(basedonRiversideCounty DesignHandbookforLowImpactDevelopment,September2011)dependingonthetypeofsystemwhichwillbe designedusingthefieldvaluesanddependingonthelevelofpreͲtreatmentandinfluentwhichwillbedischarged intothebasins(RiversideCountyStormwaterQualityDesignHandbook,2006). **PͲ1isBͲ6,PͲ2=BͲ5,andPͲ3=BͲ7  PleaserefertoSection5.8fordesignandmaintenancerecommendations. March30,201616FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Section4  CONCLUSIONS Thefollowingisasummaryofourconclusionsandprofessionalopinionsbasedonthedata obtainedfromareviewofselectedtechnicalliteratureandthesiteevaluation. GeneralGeotechnicalConstraintsandMitigation: x Theprimarygeologichazardisseveregroundshakingfromearthquakesoriginatingon regionalfaultsincludingtheSanAndreasandSanJacintofaults.Amajorearthquakeabove magnitude6.7originatingonthelocalsegmentoftheSanAndreasfaultzonewouldbethe criticalseismiceventthatmayaffectthesitewithinthedesignlifeoftheproposed development.EngineereddesignandearthquakeͲresistantconstructionincreasesafetyand allowdevelopmentofseismicareas x TheunderlyinggeologicconditionforseismicdesignisSiteClassD.Thesiteisabout8.8 milesfromaTypeAseismicsourceasdefinedintheCaliforniaGeologicalSurvey.A qualifiedprofessionalshoulddesignanypermanentstructureconstructedonthesite.The minimumseismicdesignshouldcomplywiththe2013editionoftheCaliforniaBuilding Code. x Ouranalysisindicatesthattheexpecteddesignlevelseismicshakingcouldcauseminordry sandsettlement. x Sitesoilsweregenerallysandwithvaryingamountsofsiltandgravel(UnifiedSoils ClassificationSystemsymbolsofSP,SW,SPͲSM,andSWͲSM)tothemaximumdepthof explorationof41feetbelowthegroundsurface.Bouldersandcobblesarelikelypresent. x Sitesoilsintheupper2feetaregenerallyloose.Assuch,overͲexcavationandrecompaction isrecommendedtoprovideafirmbearingsurface. x SitesoilsaregenerallyverylowinExpansionIndex. x Sitesoilswherefoundtoobtainsignificantamountsofoversizematerial(6”atlargest dimension).Shrinkagelossduetoremovalofoversizematerialmayrangebetween5and 20%withinthetop24inchesandhigheratdeeperdepths. x Thesoilsaresusceptibletowindandwatererosion.Preventativemeasurestoreduce seasonalfloodinganderosionshouldbeincorporatedintositegradingplans.Dustcontrol shouldalsobeimplementedduringconstruction.Sitegradingshouldbeinstrict compliancewiththerequirementsoftheSouthCoastAirQualityManagementDistrict [SCAQMD]. x Othergeologichazards,includingfaultrupture,liquefaction,flooding,andlandslides,are consideredlowornegligibleonthissite. x Stormbasinswithbaresoiland3(H):1(V)slopeshavethepotentialforsurficialfailures. Slopeplanningorfacingandfoundationsetbacksarerecommended.  March30,201617FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Section5  RECOMMENDATIONS SITEDEVELOPMENTANDGRADING 5.1 SiteDevelopment–Grading ArepresentativeofEarthSystemsSouthwest[EarthSystems]shouldobservesiteclearing, grading,andthebottomsofexcavationsbeforeplacingfill.Localvariationsinsoilconditions maywarrantincreasingthedepthofrecompactionandoverͲexcavation. Propergeotechnicalobservationandtestingduringconstructionisimperativetoallowthe geotechnicalengineertheopportunitytoverifyassumptionsmadeduringthedesignprocess andtoverifythatourgeotechnicalrecommendationshavebeenproperlyinterpretedand implementedduringconstructionandisrequiredbythe2013CaliforniaBuildingCode. Therefore,werecommendthatEarthSystemsberetainedduringtheconstructionofthe proposedimprovementstoprovidetestingandobservecompliancewiththedesignconcepts andgeotechnicalrecommendations,andtoallowdesignchangesintheeventthatsubsurface conditionsormethodsofconstructiondifferfromthoseassumedwhilecompletingourstudy. Additionally,theCaliforniaBuildingCodesrequiresthetestingagencytobeemployedbythe projectownerorrepresentative(i.e.architect)toavoidaconflictofinterestifemployedbythe contractor. ClearingandGrubbing:Atthestartofsitegrading,existingvegetation,trees,largeroots, pavement,debris,foundations,nonͲengineeredfill,trash,andundergroundutilitiesshouldbe removedfromtheproposedbuildingpadsandotherimprovementareas.Areasdisturbed duringdemolitionandclearingshouldbeproperlybackfilledandcompactedasdescribed below.Oversizematerial(largerthan6inchesmaximumdimension),trash,debris,vegetation (greaterthan1%organiccontent),etc.shouldberemovedpriortouseasengineeredfill. Dustcontrolshouldalsobeimplementedduringconstruction.Sitegradingshouldbeinstrict compliancewiththerequirementsoftheSouthCoastAirQualityManagementDistrict [SCAQMD]. BuildingPadPreparation:BecauseoftherelativelynonͲuniformandcohesionlessnatureofthe uppersitesoils,werecommendrecompactionofsoilsinthebuildingandparking/driveareas. Theexistingsoilswithinthebuildingpad,andfoundationareas,shouldbeoverͲexcavatedtoa minimumdepthof3feetbelowexistinggrade,2feetbelowfinishedsubgradeelevation,ora minimumof2feetbelowthebottomofthefootinglevel,whicheverislowerintherespective padorfootingarea,(i.e.forcut/fillbuildingpads,overexcavate2feetbelowtheexposed, finishedcutsurfaceincutareas,2feetbelowtheexistinggradeinfillareaspriortoplacingfill, and2feetbelowthebottomoffootingelevations).TheoverͲexcavationshouldextendfor 5feetbeyondtheouteredgeofexteriorfootingsandincludeanycoveredwalkwayareas,patio areas,etc.wherepossible.OverͲexcavationshouldpenetratethroughanyfillsoilsandextent tosoilwithaninͲplacedensityofatleast85%relativecompaction(ASTMD1557)oruntilthe soilsarefirmasdeterminedbytheGeotechnicalEngineerofRecordorhisrepresentative.The March30,201618FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST approvedbottomoftheoverͲexcavationshouldthenbescarified,moistureͲconditioned,and recompactedtoatleast90%relativecompaction(ASTMD1557)foranadditionaldepthofone foot.Engineeredfill(removedofoversizematerial)compactedtoatleast90%relative compaction(ASTMD1557)shouldthenbeplacedtofinishedgrade.Ifneeded,aggregatebase placedbeneaththebuildingslabshouldbeaminimumof4inchesinthicknessandcompacted toatleast95%compactionrelativetoASTMD1557.Compactionshouldbeverifiedbytesting. AlloverͲexcavationsshouldextendtoadepthwheretheprojectgeologistortheir representativehasdeemedtheexposedsoilsasbeingsuitableforreceivingcompactedfill.The materialsexposedatthebottomofexcavationsshouldbeobservedbyageotechnicalengineer orgeologistfromourofficepriortotheplacementofanycompactedfillsoils.Additional removalsmayberequiredasaresultofobservationsand/ortestingoftheexposedsubgrade subsequenttotherequiredoverͲexcavation. AuxiliaryStructuresSubgradePreparation:Auxiliarystructures,suchasfenceorretainingwalls (withfoundations),trashenclosures,etc.,shouldhavethefoundationsubgradeprepared similartothebuildingpadrecommendationsgivenabovebutthelateralextentoftheoverͲ excavationneedstoextendonly2feetbeyondtheexteriorfaceofthefooting. PavementAreaPreparation:Instreet,drive,andpermanentparkingareas,thesubgrade shouldbeoverͲexcavated,scarified,moistureconditioned,andcompactedtoatleast 90%relativecompaction(ASTMD1557)foradepthofatleast18inchesbelowexistinggrade orfinishgrade(whicheverisdeeper),withtheupper1footcompactedtoatleast95%relative compaction.Compactedfillremovedofoversizematerialshouldbeplacedtofinishsubgrade elevation.Compactionshouldbeverifiedbytesting. SubgradePreparation:InnonͲstructuralareastoreceivefillorhardscape,thesubgradeshould bescarified,moistureͲconditioned,andcompactedtoatleast90%relativecompaction (ASTMD1557)foradepthofonefootbelowfinishedsubgradeor1footbelowtheexisting grade,whicheverisdeeper.Compactionshouldbeverifiedbytesting. Thematerialsexposedatthebottomofexcavationsshouldbeobservedbyageotechnical engineer,geologistortheirrepresentativefromourofficepriortotheplacementofany compactedfillsoils.Additionalremovalsmayberequiredasaresultofobservationand/or testingoftheexposedsubgradesubsequenttotherequiredoverͲexcavation. EngineeredFillSoils:Thenativesoilissuitableforuseasengineeredfillprovideditisfreeof significantorganicordeleteriousmatter,andoversizerock.Withinareastoreceive foundationsandslabsͲonͲgradethefillshouldbe“verylow”inExpansionIndex.Import materialshouldbeofsimilarconsistency(sandy)tonativematerialandbeapprovedforuseby theprojectgeotechnicalengineer. Allfillshouldbeplacedinmaximum8Ͳinchlifts(loosethickness)andcompactedtoatleast90 percentrelativecompactioningeneralaccordancewithASTMD1557(currentedition). Aggregatebaseplacedbeneaththebuildingslabshouldbecompactedtoatleast95% compactionrelativetoASTMD1557.Inparkinganddriveareastheupperonefootof subgradeandaggregatebaseshouldbecompactedtoaminimumof95percentrelative March30,201619FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST compaction.Compactionshouldbeverifiedbytesting.Ingeneral,rockslargerthan6inchesin greatestdimensionshouldberemovedfromfillorbackfillmaterial(fillorbackfillshouldbesoil andnotconsistpredominatelyorsignificantlyofrock)placedwithinthebuildingpad.Oversize rockmaterialmaybecrushedandincorporatedintothesoilfill.Rocksshouldnotbeplacedin anestedmannerandshouldbeevenlyspreadthroughoutthefill. Allsoilsandaggregatebaseshouldbemoistureconditionedpriortoapplicationofcompactive effort.Moistureconditioningofsoilsreferstoadjustingthesoilmoisturetoorjustabove optimummoisturecontent. Aprogramofcompactiontesting,includingfrequencyandmethodoftest,shouldbedeveloped bytheprojectgeotechnicalengineeratthetimeofgrading.Acceptablemethodsoftestmay includeNuclearmethodssuchasthoseoutlinedinASTMD6938(StandardTestMethodsforInͲ PlaceDensityandWaterContentofSoilandSoilͲAggregatebyNuclearMethods)orcorrelated handͲprobing. ShrinkageandOversizeLosses:Basedupon12inͲplacesoildensitiesintheupper5feetofsoil, andonemaximumdensitycurve,assuminganaverage93%compactionforfillplacement,we calculatetheshrinkagelimitsasͲ9to14%withanaverageshrinkageof3%(Negativeshrinkage isbulking).Usinga95%confidenceintervalforshrinkage,thehigherlimitis6%andthelower limitisͲ1%.  Greatersoillossfromshrinkagewillresultfromtheremovalofoversizematerial(rockslarger than6inches).Fieldobservationsindicatethepresentofcobblesandboulders.Oversizerock quantityestimatesmayexceed15%.Lossesfromoversizerockquantityareinadditionto lossesfromsoilshrinkage.  Shrinkageandconstructionrelatedsubsidencearehighlydependentonandmayvarywith contractormethodsforcompaction.Lossesfromsiteclearing,oversizematerial,andremovalof existingsiteimprovementsmayaffectearthworkquantitycalculationsandshouldbe considered.Oversizerockmaterialmaybecrushedandincorporatedintothesoilfilltoreduce volumeloss.  5.2 ExcavationsandUtilityTrenches ExcavationsshouldbemadeinaccordancewithOSHArequirements.UsingtheOSHA standardsandgeneralsoilinformationobtainedfromthefieldexploration,classificationofthe nearsurfaceonͲsitesoilswilllikelybecharacterizedasTypeC.Actualclassificationofsite specificsoiltypeperOSHAspecificationsastheypertaintotrenchsafetyshouldbebasedon realͲtimeobservationsanddeterminationsofexposedsoilsbythecontractorsCompetent Person(asdefinedbyOSHA)duringgradingandtrenchingoperations.Duetosomedry cohesionlesssitesoilencountered,cavingandrunningsurficialsoilsshouldbeanticipated. Oursiteexplorationandknowledgeofthegeneralareaindicatesthereisamoderatepotential forcavingandslakingofsiteexcavations(overexcavationareas,utilities,footings,etc.).Where excavationsover4feetdeepareplannedlateralbracingorappropriatecutslopesof1½:1 March30,201620FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST (horizontal/vertical)shouldbeprovided.Nosurchargeloadsfromstockpiledsoilsor constructionmaterialsshouldbeallowedwithinahorizontaldistancemeasuredfromthetopof theexcavationslopeandequaltothedepthoftheexcavation.Soilsaresusceptibletocaving suchthatshallowerexcavatedslopesmayberequiredforsitesafety. Excavationswhichparallelstructures,pavements,orotherflatwork,shouldbeplannedsothat theydonotextendintoaplanehavingadownwardslopeof1.5:1(horizontal:vertical)fromthe bottomedgeofthefootings,pavements,orflatwork.Shoringorotherexcavationtechniques mayberequiredwheretheserecommendationscannotbesatisfiedduetospacelimitationsor foundationlayout.WhereoverͲexcavationwillbeperformedadjacenttoexistingstructures, ABCslotcuttingtechniquesmaybeused.Thewidthoftheslotcutswilldependonthesoils encounteredatthepointofexcavation(slotcutwidthsaregenerallynogreaterthan5to8feet withalateral“outward”extentofatleast5feet). Shoring:Shoringmayberequiredwheresoilconditions,spaceorotherrestrictionsdonot allowaslopedexcavation.Abracedorcantileveredshoringsystemmaybeused. Atemporarycantileveredshoringsystemshouldbedesignedtoresistanactiveearthpressure equivalenttoafluidweighing35poundspercubicfoot(pcf).Bracedorrestrainedexcavations abovethegroundwatertableshouldbedesignedtoresistauniformhorizontalequivalentsoil pressureof55poundspercubicfoot(pcf).Thevaluesprovidedaboveassumealevelground surfaceadjacenttothetopoftheshoringanddonotincludeafactorofsafety. Fiftypercentofanarealsurchargeplacedadjacenttotheshoringmaybeassumedtoactasa uniformhorizontalpressureagainsttheshoring.Specialcasessuchascombinationsofslopes andshoringorothersurchargeloadsmayrequireanincreaseinthedesignvalues recommendedabove.Theseconditionsshouldbeevaluatedbytheprojectgeotechnical engineeronacaseͲbyͲcasebasis. Cantileveredshoringmustextendtoasufficientdepthbelowtheexcavationbottomtoprovide therequiredlateralresistance.Werecommendrequiredembedmentdepthsbedetermined usingmethodsforevaluatingsheetpilewallsandbasedontheprinciplesofforceandmoment equilibrium.Forthismethod,theallowablepassivepressureagainstshoring,whichextends belowthelevelofexcavation,maybeassumedtobeequivalenttoafluidweighing300pcf. Additionally,werecommendafactorofsafetyofatleast1.2beappliedtothecalculated embedmentdepthandthatpassivepressurebelimitedto1,500psf. Thecontractorshouldberesponsibleforthestructuraldesignandsafetyofalltemporary shoringsystems.Thecontractorshouldcarefullyreviewtheboringlogsinthisreport,and performtheirownassessmentofpotentialconstructiondifficulties,andmethodsshouldbe selectedaccordingly.Themethodofexcavationandsupportisultimatelylefttothecontractor withguidanceandrestrictionsprovidedbythedesignerandowner. Arepresentativefromourfirmshouldbepresentduringallsitedemolition,andclearingand gradingoperationstomonitorsiteconditions;substantiateproperuseofmaterials;evaluate compactionoperations;andverifythattherecommendationscontainedhereinaremet. March30,201621FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST UtilitiesandTrenches:BackfillofutilitieswithinroadsorpublicrightͲofͲwaysshouldbeplaced inconformancewiththerequirementsofthegoverningagency(waterdistrict,publicworks department,etc.).Utilitytrenchbackfillwithinprivatepropertyshouldbeplacedin conformancewiththeprovisionsofthisreport.Ingeneral,servicelinesextendinginsideof propertymaybebackfilledwithnativesoilscompactedtoaminimumof90%relative compactionperASTMD1557.Backfilloperationsshouldbeobservedandtestedtomonitor compliancewiththeserecommendations.Thetrenchbottomshouldbeinafirmcondition priortoplacingpipe,bedding,orfill. Underpavementsections,theupper12inchesoftrenchbackfillsoilbelowthepavement sectionshouldbecompactedtoatleast95%relativecompaction(ASTMD1557).Backfill materialsshouldbebroughtupatsubstantiallythesamerateonbothsidesofthepipeor conduit.Reductionoftheliftthicknessmaybenecessarytoachievetheaboverecommended compaction.Mechanicalcompactionisrecommended;pondingorjettingshouldbeavoided. Ingeneral,coarseͲgrainedsandand/orgapgradedgravel(i.e.¾ͲinchrockorpeaͲgravel,etc.) shouldnotbeusedforpipe/conduitortrenchzonebackfillduetothepotentialforsoil migrationintotherelativelylargevoidspacespresentinthistypeofmaterialandwater seepagealongtrenchesbackfilledwithcoarseͲgrainedsandand/orgravel.Lossofsoilmay causedamagingsettlement.NOTE:Rocksgreaterthan3inchesindiametershouldnotbe incorporatedwithinutilitytrenchbackfill. 5.3 SlopeStabilityofGradedSlopes Onsiteslopeconstructionisanticipatedtobeminimal(lessthan5feetinheight).Slopes protectedagainsterosion(suchaswithslopefacing,soilͲcementmixing,etc.)shouldbe constructedat2:1(horizontal:vertical)orflatterinclinations.Slopeswithexposednativesoils atthesurfaceshouldbeconstructedat3:1orflatter.Slopesshouldbeconstructedsuchthat theslopeiscomprisedoffullycompactedsoilwhichisalsoisexposedatthesurface.Such methodsmayincludeoverfillingduringconstructionandcuttingbacktoexposeafully compactedsoil,ortrackͲwalkingorgridͲrolling.Compactedfillshouldbeplacedatnear optimummoisturecontentandcompactedtoaminimum90percentofthemaximumdryunit weight,asmeasuredinrelationtoASTMD1557testprocedures.Theexposedfaceofanycut orfillslope(upper12inches)shouldhaveaminimumrelativedensityof90percentofthe maximumdryunitweight,asmeasuredinrelationtoASTMD1557testprocedures,andbe compactedatnearoptimummoisturecontent. 5.3.1 SurficialSlopeFailures Allslopeswillbeexposedtoweathering,resultingindecompositionofsurficialearthmaterials, thuspotentiallyreducingshearstrengthpropertiesofthesurficialsoils.Inaddition,these slopesbecomeincreasinglysusceptibletorodentburrowing. Astheseslopesdeteriorate,theycanbeexpectedtobecomesusceptibletosurficialinstability suchassoilslumps,erosion,soilcreep,anddebrisflows.Developmentareasimmediately adjacenttoascendingordescendingslopesshouldaddressfuturesurficialsloughingofsoil material.SuchmeasuresmayincludemaintenancerequirementsintheOperationsand March30,201622FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Maintenance(O&M)plan,debrisfences,liners,catchmentareasorwalls,ditches,deeprooted widespreadsoilplantingorothertechniquestocontainsoilmaterial. TheO&MinspectionsshouldbedoneafterasignificantrainfalleventandonatimeͲbased criteria(annuallyorless)toevaluatedistresssuchaserosion,slopecondition,rodent infestationburrows,etc.Inspectionsshouldberecordedandphotographstakentodocument currentconditions.Therepairprocedureshouldoutlineaplanforfixingandmaintaining surficialslopefailures,erosionalareas,gullies,animalburrows,etc.Repairmethodscould consistofexcavatingandinfillingwithcompactedsoil(atleast90%relativecompaction) erosionalfeatures,trackwalkingtheslopefaceswithheavyequipment,asdeterminedbythe typeandsizeofrepair.Theserepairsshouldbeperformedinapromptmanneraftertheir occurrence.Designslopeinclinationsshouldbemaintainedandamaintenanceprogramshould includeidentifyingareaswhereslopesbegintosteepen. 5.4 ShallowFoundations Inourprofessionalopinion,foundationsforthestructuresproposed(aspresentedwithin)can besupportedonreinforcedfoundationsbearinginproperlypreparedandcompactedsoils placedasrecommendedinSection5.1.Therecommendationsthatfollowarebasedon“very low”expansioncategorysoilsintheupper6feetofsubgrade.Duringremedialgradingof buildingpads,thesoilexpansionpotentialshouldbeverifiedandfoundationrecommendations confirmedormodified,ateachbuildingsite. FoundationdesignistheresponsibilityoftheStructuralEngineer,consideringthestructural loadingandthegeotechnicalparametersgiveninthisreport.ArepresentativeofEarth Systemsshouldobservefoundationexcavationsbeforeplacementofreinforcingsteelor concrete.Loosesoilorconstructiondebrisshouldberemovedfromfootingexcavationsbefore placementofconcrete. ArepresentativeofEarthSystemsshouldobservefoundationexcavationsbeforeplacementof reinforcingsteelorconcrete.Loosesoilorconstructiondebrisshouldberemovedfromfooting excavationsbeforeplacementofconcrete.Afterexcavation,foundationbottomsshouldbe compactedtoatleast90%relativecompaction,eveniffoundedinpreviouslycompactedfill. BearingCapacity–ShallowFoundationsforBuildings:Theminimumfootingdepthspresented belowshouldbemaintainedbelowthelowestadjacentgrade(lowestadjacentgrade=lowest gradewithin3feetlaterallyofthefootingedge(5feetwhenadjacenttoslopes)).Allowable soilbearingpressuresaregivenbelowforfoundationsbearingonrecompactedsoilsas describedinSection5.1.Allowablebearingpressuresarenet(weightoffootingandsoil surchargemaybeneglected).WeutilizedafactorͲofͲsafetyof3.0onultimatebearingvalues fordeterminingallowablebearingvalues. March30,201623FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST ¾Continuouswallfoundations,12Ͳinchminimumwidthand12inchesbelowgrade: 1500psffordeadplusdesignliveloads Allowableincreasesof300psfforeachadditional0.5footoffootingdepthmaybeused uptoamaximumvalueof3000psf. ¾Isolatedpadfoundations,2x2footminimuminplanand18inchesbelowgrade: 2000psffordeadplusdesignliveloads Allowableincreasesof300psfforeachadditional0.5footoffootingdepthmaybeused uptoamaximumvalueof3000psf. Anaveragemodulusofsubgradereaction,k,of200poundspercubicinch(pci)canbeusedto designpavementslabsfoundeduponcompactedfill.Ataminimum,ACISection4.3,Table 4.3.2shouldbefollowedforrecommendedcementtype,watercementratio,andcompressive strengthorasrecommendedbytheprojectcorrosionengineer. MinimumFoundationReinforcement:Minimumreinforcementshouldbeprovidedbythe structuralengineertoaccommodatethesettlementpotentialspresentedwithin. BearingCapacityandPassivePressure–WindandSeismicIncreases:AoneͲthird(Ы)increase inthebearingandpassivepressuresmaybeusedwhencalculatingresistancetowindor seismicloads.Theallowablebearingvaluesindicatedarebasedonthestructuretypes describedinthisreport.Ifthestructuresaredifferentfromthatdescribed,thegeotechnical engineermustreevaluatetheallowablebearingvaluesandthegradingrequirements. 5.4.1 EstimatedSettlementsforShallowFoundations Estimatedtotalstaticsettlementshouldbelessthan3/4Ͳinch,basedonfootingsfoundedon compactedsoilsasrecommendedinSection5.1.Differentialstaticsettlementbetween exteriorandinteriorbearingmembersshouldbelessthan1/2inch.Totaldrysanddifferential settlementisestimatedtobeontheorderoflessthan1/4inch.Assuch,consideringboth staticandseismicsettlementappliedoveratypicalfoundationdistanceof40feet,we recommendthestructuralengineerdesignforanangulardistortionof1:480(1inchin40feet). Settlementwillnotresultinthecompletelossofsoilsupport,butwillbemanifestedasatilting ofthestructureovertheapplieddistance. 5.5 SlabsͲonͲGrade Subgrade:ConcreteslabsͲonͲgradeandflatworkshouldbesupportedbycompactedsoilplaced inaccordancewithSection5.1ofthisreport. VaporRetarder:InareasofmoistureͲsensitivefloorcoveringsorexposedinteriorslabs,an appropriatevaporretardershouldbeinstalledtoreducemoisturetransmissionfromthe subgradesoiltotheslab.Fortheseareas,aclassvaporretarder(minimum10Ͳmilthickness) shouldunderliethefloorslabs.IfaClassAvaporretarder(ASTME1745)isspecified,the retardercanbeplaceddirectlyonverylowexpansivesoilplacedperSection5.1andthe retardershouldbecoveredwithaminimumof2inchesofcleansand. March30,201624FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST CleansandisdefinedaswellorpoorlyͲgradedsand(ASTMD2488)ofwhichlessthan3%passes theNo.200sieve.Thesitesoilsdonotfulfillthecriteriatobeconsideredcleansand.Thesand shouldbelightlymoistenedjustpriortoplacingtheconcrete.LowͲslumpconcreteshouldbe usedtohelpreducethepotentialforconcreteshrinkage.Theeffectivenessofthemembraneis dependentuponitsquality,themethodofoverlapping,itsprotectionduringconstruction,and thesuccessfulsealingofthemembranearoundutilitylinesandatjoints.Capillarybreaks(if any)shouldconsistofaminimumof4inchesofopen/gapͲgradedgravel. Thefollowingminimumslabrecommendationsareintendedtoaddressgeotechnicalconcerns suchaspotentialvariationsofthesubgradeandarenottobeconstruedassupersedingany structuraldesign.Adesignengineershouldberetainedtoprovidebuildingspecificsystemsto handlesubgrademoisturetoensurecompliancewithSB800withregardstomoistureand moisturevapor. SlabThicknessandReinforcement:SlabthicknessandreinforcementofslabsͲonͲgradeare contingentontherecommendationsofthestructuralengineerorarchitectinaccordancewith therequirementsofthe2013CBCandtherequirementsofthecurrenteditionsofAmerican ConcreteInstitute(ACI)224,302,and360inrelationtotheproposeduseoftheslab.Based uponourfindings,amodulusofsubgradereactionofapproximately200poundspercubicinch canbeusedinconcreteslabdesignfortheexpectedcompactedsubgrade.ACISection4.3, Table4.3.2shouldbefollowedforrecommendedcementtype,watercementratio,and compressivestrengthorasrecommendedbytheprojectcorrosionengineer. Concreteflatworkshouldbeaminimumof4inchesthick(actual,notnominal).We recommendallslabsbereinforced,ataminimum,with#3reinforcingbar,spaced18incheson center,bothdirections.Concretefloorslabsshouldeitherbemonolithicallyplacedwiththe foundationsordoweledafterfootingplacement. Therecommendationsgivenarenotintendedtosupersedeanystructuralrequirements providedbythestructuralengineer.Theprojectinspectorshouldcontinuallyobserveall reinforcingsteelinslabsduringplacementofconcretetocheckforproperlocationwithinthe slab. ControlJoints:ControljointsshouldbeprovidedinallregularconcreteslabsͲonͲgradeata maximumspacingof36timestheslabthickness(12feetmaximumonͲcenter,eachway)as recommendedbyAmericanConcreteInstitute[ACI]guidelines.Controljointsshouldbe providedfullyaroundallcolumnandotherfoundationelementstoisolatethemfromtheslab. Thisistoreducecrackingduetofoundationelementmovement(normalsettlement).Alljoints shouldformapproximatelysquarepatternstoreducethepotentialforrandomlyoriented shrinkagecracks.Controljointsintheslabsshouldbetooledatthetimeoftheconcrete placementorsawcut(¼ofslabdepth)assoonaspracticalbutnotmorethan8hoursfrom concreteplacement. Construction(cold)jointsshouldconsistofthickenedbuttjointswith½Ͳinchdowelsat18 inchesoncenterorathickenedkeyedͲjointtoresistverticaldeflectionatthejoint.Allcontrol jointsinexteriorflatworkshouldbesealedtoreducethepotentialofmoistureorforeign March30,201625FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST materialintrusion.Theseprocedureswillreducethepotentialforrandomlyorientedcracks, butmaynotpreventthemfromoccurring. CuringandQualityControl:Thecontractorshouldtakeprecautionstoreducethepotentialof curlingofslabsinthisariddesertregionusingproperbatching,placement,andcuringmethods. Curingishighlyaffectedbytemperature,wind,andhumidity.Qualitycontrolprocedures shouldbeused,includingtrialbatchmixdesigns,batchplantinspection,andonͲsitespecial inspectionandtesting.CuringshouldbeinaccordancewithACIrecommendationscontainedin ACI211,304,305,308,309,and318.Concreteshouldbewetcuredwithburlaporplasticforat least7daysandnotallowedtodryouttominimizesurfacecrackingandslabcurl. Sidewalks:Forsidewalks,6x610/10weldedwirefabricmaybeusedasreinforcement. Sidewalksshouldbeatleast4inchesinactualthickness.Fibermixmaybeusediffinished correctly. Aminimumconcretegapofthree(3)inchesshouldbeprovidedaroundthesteelreinforcing fabricandtheedgeoftheformwork.ReinforcingsteelshouldbeplacedatmidͲheightwithin thesidewalkandplaceduponcentralizersratherthanliftedintoplaceduringplacement.Flat sheetsshouldbeusedinsteadofrolls,asrollsdonotallowforaccuratelocatingofthefabricat midheightoftheslab.Wherethereinforcingsteeldoesnothaveadequatecover,itwill corrodeandcanfracturethecuredconcreteandproduceunsightlyrustdiscolorationwhen exposedtothecorrosivesitesoilsandlandscapewater.Fabricshouldbeoverlappedatleast6 inchesatjoints.Additionally,theconcreteshouldbevibratedduringplacement.Controljoints shouldbeprovidedinallconcreteslabsͲonͲgradeatamaximumspacingofapproximately4to 10feet.Alljointsshouldformapproximatelysquarepatternstoreducethepotentialfor randomlyoriented,contractioncracks.Contractionjointsintheslabsshouldbetooledatthe timeofthepourorsawcut(¼ofslabdepth(1inchfora4inchslab))within8hoursofconcrete placement.Construction(cold)jointsshouldconsistofthickenedbuttjointswithoneͲhalfinch dowelsat18ͲinchesoncenterorathickenedkeyedͲjointtoresistverticaldeflectionatthe joint. 5.6 SeismicDesignCriteria Thissiteissubjecttostronggroundshakingduetopotentialfaultmovementsalongregional faultsincludingtheSanAndreas.EngineereddesignandearthquakeͲresistantconstruction increasesafetyandallowdevelopmentofseismicareas.Theminimumseismicdesignshould complywiththe2013editionoftheCaliforniaBuildingCodeandASCE7Ͳ10usingtheseismic coefficientsgiveninthetablebelow.Thecoordinatesforthispointlocationoccurredat 33.69939/Ͳ116.37336(boringBͲ6)anddataentrytookplaceonMarch18,2016. March30,201626FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST 2013CBC(ASCE7Ͳ10)SeismicParameters RiskCategory: EstimatedAve100’ShearWaveVelocity: I/II/III 988fps  SiteClass:D MaximumConsideredEarthquake[MCE]GroundMotion ShortPeriodSpectralResponseSs:1.500g 1secondSpectralResponse,S1:0.600g SiteCoefficient,Fa:1.00 SiteCoefficient,Fv: Acceleration,PGAM: 1.50 0.509  DesignEarthquakeGroundMotion ShortPeriodSpectralResponse,SDS1.000g 1secondSpectralResponse,SD10.600g TheintentoftheCBClateralforcerequirementsistoprovideastructuraldesignthatwillresist collapsetoprovidereasonablelifesafetyfromamajorearthquake,butmayexperiencesome structuralandnonstructuraldamage.Afundamentaltenetofseismicdesignisthatinelastic yieldingisallowedtoadapttotheseismicdemandonthestructure.Inotherwords,damageis allowed.TheCBClateralforcerequirementsshouldbeconsideredaminimumdesign.The ownerandthedesignermayevaluatethelevelofriskandperformancethatisacceptable. Performancebasedcriteriacouldbesetinthedesign.Thedesignengineershouldexercise specialcaresothatallcomponentsofthedesignarefullymetwithattentiontoprovidinga continuousloadpath.Anadequatequalityassuranceandcontrolprogramisurgedduring projectconstructiontoverifythatthedesignplansandgoodconstructionpracticesare followed.Thisisespeciallyimportantforsiteslyingclosetothemajorseismicsources. 5.7 RetainingWallsandLateralEarthPressures RetainingWalls: x Retainingwallsshouldbedesignedforanactivesoilpressureequivalenttoafluiddensityof 35pcf.Theactivelateralearthpressuresareforhorizontal(level)backfillsusingtheonͲsite nativesoilsonwallsthatarefreetorotateatleast0.1percentofthewallheight.Walls, whicharerestrainedagainstmovementorrotationatthetop,shouldbedesignedforanatͲ restequivalentfluidpressureof55pcf.Thelateralearthpressurevaluespresentedarefor levelbackfillandareprovidedforwallsbackfilledwithdrainagematerialsandexistingonͲ sitesoils.WallsretainingslopingbackfillorotherconditionsshouldbeevaluatedonacaseͲ byͲcasebasisbythegeotechnicalengineer. x Inadditiontotheactiveoratrestsoilpressure,theproposedwallstructuresmaybe designedtoincludeforcesfromdynamic(seismic)earthpressure.Dynamicpressuresare additivetoactiveandatͲrestearthpressureandshouldbeconsideredas8and22pcf, respectively.SeismicpressuresarebasedonAlAtikandSitar(2010)methodologyand March30,201627FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST consideringPGAm.Wallsretaininglessthan6feetofsoilneednotconsiderthisincreased pressure. x Retainingwallsadjacenttoparkingstallsordrivesshouldconsideratrafficloadappliedto thewallof125psf(assuminga250psftrafficsurcharge)fortrafficlocatedatleast1foot fromthebacksideofthewall.Wallsretainingtruckloads(doublerearaxle)shouldconsider a200psfwallload. x Geogridreinforcedorothersoilstabilizedretainingwallsshouldbedesignedforaphiangle of33degrees,0psfcohesion,132pcftotalunitweight,andincludedynamicearthpressure asspecifiedabove. x RetainingwallfoundationsshouldbeplaceduponcompactedfilldescribedinSection5.1. x Abackdrainoranequivalentsystemofbackfilldrainageshouldbeincorporatedintothe walldesign,wherebythecollectedwaterisconveyedtoanapprovedpointofdischarge. Designshouldbeinaccordancewiththe2013CaliforniaBuildingCode.Drainrockshould bewrappedcompletelyinfilterfabricsuchasMirafi140Nasaminimum.Backfill immediatelybehindtheretainingstructureshouldbeafreeͲdraininggranular. Waterproofingshouldbeaccordingtothedesigner’sspecifications.Watershouldnotbe allowedtopondorinfiltratenearthetopofthewall.Toaccomplishthis,thefinalbackfill gradeshouldbesuchthatwaterisdivertedawayfromretainingwalls. x Compactionontheretainedsideofthewallwithinahorizontaldistanceequaltoonewall height(toamaximumof6feet)shouldbeperformedbyhandͲoperatedorother lightweightcompactionequipment(90%compactionrelativetoASTMD1557atnear optimummoisturecontent).ThisisintendedtoreducepotentiallockedͲinlateralpressures causedbycompactionwithheavygradingequipmentordislodgingmodularblocktype walls. x TheaboverecommendedvaluesdonotincludecompactionortruckͲinducedwall pressures.Caremustbetakenduringthecompactionoperationnottooverstressthewall. Heavyconstructionequipmentshouldbemaintainedadistanceofatleast3feetawayfrom thewallswhilethebackfillsoilsareplaced.Upwardslopingbackfillorsurchargeloadsfrom nearbyfootingscancreatelargerlateralpressures.Shouldanywallsbeconsideredfor retainingslopedbackfillorplacednexttofoundations,ourofficeshouldbecontactedfor recommendeddesignparameters.Surchargeloadsshouldbeconsiderediftheyexist withinazonebetweenthefaceofthewallandaplaneprojected45degreesupwardfrom thebaseofthewall.Theincreaseinlateralearthpressureshouldbetakenas35%ofthe surchargeloadwithinthiszone.Retainingwallsshouldbedesignedwithaminimumfactor ofsafetyof1.5. FrictionalandEarthPressureCoefficients: x Resistancetolateralloads(includingthoseduetowindorseismicforces)maybeprovided byfrictionalresistancebetweenthebottomofconcretefoundationsandtheunderlying soil,andbypassivesoilpressureagainstthefoundations.Anallowablecoefficientof frictionof0.35maybeusedbetweencastͲinͲplaceconcretefoundationsandslabsandthe March30,201628FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST underlyingsoil.Anallowablecoefficientoffrictionof0.30maybeusedbetweenpreͲcastor formedconcretefoundationsandslabsandtheunderlyingsoil x Allowablepassivepressuremaybetakenasequivalenttothepressureexertedbyafluid weighing300poundspercubicfoot(pcf).Verticalupliftresistancemayconsiderasoilunit weightof105poundspercubicfoot.Theupper1footofsoilshouldnotbeconsidered whencalculatingpassivepressureunlessconfinedbyoverlyingasphaltconcretepavement orPortlandcementconcreteslab.Thesoilspressurespresentedhaveconsideredonsitefill soils.Testingorobservationshouldbeperformedduringgradingbythesoilsengineeror hisrepresentativetoconfirmorrevisethepresentedvalues. x Passiveresistanceforthrustblocksbearingagainstfirmnaturalsoilorproperlycompacted backfillcanbecalculatedusinganequivalentfluidpressureof350pcf.Themaximum passiveresistanceshouldnotexceed1,500psf. x Constructionemployingpolesorposts(i.e.lampposts,signpoles)mayutilizedesign methodspresentedinSection1807.3oftheCBCforsand(SW,SWͲSM,SP,SPͲSM)material class.Theupper2feetofanypostorpoleshouldbeneglectediffoundedinanareawith soilatthesurfaceduetoerosionconcerns. x ThepassiveresistanceofthesubsurfacesoilswilldiminishorbenonͲexistentiftrench sidewallsslough,cave,orareoverwidenedduringorfollowingexcavations.Ifthiscondition isencountered,ourfirmshouldbenotifiedtoreviewtheconditionandprovideremedial recommendations,ifwarranted. 5.8 SiteDrainageandMaintenance Positivedrainageinnativesoilsshouldbemaintainedawayfromthestructures(5%for5feet minimum)topreventpondingandsubsequentsaturationofthefoundationsoils.Guttersand downspoutsinconjunctionwitha1to2%pavedorhardscapegradeshouldbeconsideredasa meanstoconveywaterawayfromfoundationsifincreasedfallisnotprovided. Drainageshouldbemaintainedforpavedareas.Watershouldnotpondonornearpavedareas orfoundations.Thefollowingrecommendationsareprovidedinregardtositedrainageand structureperformance: x Innoinstanceshouldwaterbeallowedtofloworpondagainststructures,slabsor foundationsorflowoverunprotectedslopefaces.Adequateprovisionsshouldbe employedtocontrolandlimitmoisturechangesinthesubgradebeneathfoundationsor structurestoreducethepotentialforsoilsaturationanderosionofslopes.Landscape bordersshouldnotactastrapsforwaterwithinlandscapeareas.Potentialsourcesofwater suchaspiping,drains,brokensprinklers,etc,shouldbefrequentlyexaminedforleakageor plugging.Anysuchleakageorpluggingshouldbeimmediatelyrepaired. x Itishighlyrecommendedthatlandscapeirrigationorothersourcesofwaterbecollected andconductedtoanapproveddrainagedevice.Landscapinganddrainagegradesshouldbe loweredandslopedsuchthatwaterdrainstoappropriatecollectionanddisposalareas.All runoffwatershouldbecontrolled,collected,anddrainedintoproperdrainoutlets.Control March30,201629FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST methodsmayincludecurbing,ribbongutters,'V'ditches,orothersuitablecontainmentand redirectiondevices. x Proposedretention/infiltrationpondsshouldnotbebasedinfinegrainedsoils.Excavation shouldextendthroughanyfinegrainedsoilsencounteredandextendintothesitesandy soils. x Maintenanceofdrainagesystemsandinfiltrationstructurescanbethemostcritical elementindeterminingthesuccessofadesign.Theymustbeprotectedandmaintained fromsedimentͲladenwaterbothduringandafterconstructiontopreventcloggingofthe surficialsoilsandfiltermedium.ThepotentialforcloggingcanbereducedbypreͲtreating structureinflowthroughtheinstallationofmaintainableforebays,biofilters,or sedimentationchambers.Inaddition,sediment,leaves,anddebrismustberemovedfrom inlets,structures,andtrapsonaregularbasis.Sincetheseandotherfactors(suchas varyingsoilconditions)mayaffecttherateofwaterinfiltration,itshouldbeconsideredto applyaconservativefactorofsafety[FOS]totheunfactoredBasicPercolation/Infiltration Ratespresentedwithintoprovideareliablebasisfordesign.Inordertoaccountnotonly fortheunknownfactorsabovebutalsoforchangesofconditionsduringtheuseofthe structuressuchaspotentialcloggingeffectsduetowashinginofsoilfines,aFOSbetween3 and10shouldbeappliedtolowerthepresentedinfiltrationratesasrecommendedinthe RiversideCountyDesignHandbook,2011.Thefactorofsafetyshouldbeselectedbythe projectdrainageengineerandmaybedependentonagencyguidelinesandthepresenceof filtersandsedimentationstructures.Ifthesemeasuresareprovided,thefactorofsafety canbereduced. x Thedrainagepatternshouldbeestablishedatthetimeoffinalgradingandmaintained throughoutthelifeoftheproject.Additionally,drainagestructuresshouldbemaintained (includingthedeͲcloggingofpiping,basinbottomscarification,basinbottomsiltremoval, etc.)throughouttheirdesignlife.Maintenanceofthesestructuresshouldbeincorporated intothefacilityoperationandmaintenancemanual.Structuralperformanceisdependent onmanydrainageͲrelatedfactorssuchaslandscaping,irrigation,lateraldrainagepatterns andotherimprovements. x Itisexpectedthatbasinsoilswillbegradedwithheavy,constructiongradeearthmoving equipmentwhichcancompactsoilsduringgrading.Compactedsoilshaveareduced inabilitytoinfiltratewater.Assuch,werecommendleavingbasinbottomsoilsinanative, undisturbedorscarifiedconditiontomaintaininfiltrationrates. 5.9 ParkingandDrives Pavementstructuralsectionsforassociateddriveareasincludingrecommendationsfor standardasphaltconcrete,andPortlandcementconcreteareprovidedbelow. PavementAreaPreparation:Instreet,drive,andparkingareas,thesubgradeshouldbe overexcavatedasrecommendedinSection5.1,moistureconditioned,andcompacted. Compactionshouldbeverifiedbytesting.Aggregatebaseshouldbecompactedtoaminimum 95%relativecompaction(ASTMD1557). March30,201630FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST AutomobileTrafficandParkingAreas PavementsectionspresentedinthefollowingTableforautomobiletypetrafficareasandare basedonassumedRͲvaluetestingandcurrentCaltransdesignprocedures.Werecommend representativesubgradesamplesbeobtainedduringgradingandobservedforconsistencyto thesoilsdescribedwithinorRͲvaluetestbeperformed.TrafficIndices(TI)of5,and7.0were usedtofacilitatethedesignofasphaltconcretepavementsformaindrivesandparking.The TI’sassumedbelowshouldbereviewedbytheprojectCivilEngineertoevaluatethesuitability forthisproject.Alldesignshouldbebaseduponanappropriatelyselectedtrafficindex. Changesinthetrafficindiceswillaffectthecorrespondingpavementsection. Table6 PreliminaryFlexiblePavementSectionRecommendations RͲValueSubgradeSoilsͲ66(tested)DesignMethod–CALTRANS TrafficIndex Calculated Asphalt Concrete Thickness (in.) Calculated Aggregate Base Thickness (in.) 5orless (TypeIIAutomobileParking/NonͲMainlineDrives)3.04.0 7.0 (Drives/Entries)4.04.0 Conventional,rigidpavements,i.e.Portlandcementconcrete(PCC)pavements,are recommendedinareasthatwillbesubjecttorelativelyhighstaticwheelloadsand/orheavy vehicleloading/unloadingandturningareas(i.e.truck/buslanes).Thepavementsectionbelow isbasedupontheGuideforConstructionofConcreteParkingLots,ACI330R,andthe assumptionsoutlinedbelow. Table7 PreliminaryPortlandCementConcretePavementSections Area Minimum PavementPCC Thickness(inches) Minimum28Day FlexuralStrength (psi) ConcreteCompressive Strength(psi) TruckAccess Areas,(Traffic CategoryC, ADTT=100) 6.0**5503,650 ModulusofSubgradeReactiondriveareafill,k=200pci **PortlandCementConcretecanbeplaceddirectlyonthesoilsubgradepreparedasrecommendedinSection5.1 March30,201631FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Shouldtheactualtrafficcategoryvaryfromthoseassumedandlistedabove,thesesections shouldbemodified.Theabovepavementsectionsarecontingentontherecommendations below. x PavementAreaPreparation:Instreet,drive,andpermanentparkingareas,subsequentto strippingandgrubbing,andtheremovalofdebrisanddeleteriousmaterials,thesubgrade shouldbeoverͲexcavated,scarified,moistureconditioned,andcompactedtoatleast 90%relativecompaction(ASTMD1557)foradepthof18inchesbelowexistinggradeor finishgrade(whicheverisdeeper),withtheupper1Ͳfootofsubgradecompactedtoatleast 95%relativecompaction.Compactedfillshouldbeplacedtofinishsubgradeelevation. Compactionshouldbeverifiedbytesting. x AlloverͲexcavationsshouldextendtoadepthwheretheprojectgeologist,engineerorhis representativehasdeemedtheexposedsoilsasbeingsuitableforreceivingcompactedfill. Thematerialsexposedatthebottomofexcavationsshouldbeobservedbyageotechnical engineerorgeologistfromourofficepriortotheplacementofanycompactedfillsoils. Additionalremovalsmayberequiredasaresultofobservationand/ortestingofthe exposedsubgradesubsequenttotherequiredoverͲexcavation. x Theupper12inchesofsubgradesoilsbeneaththeasphaltconcrete(andanyaggregate base)andconventionalPCCpavementsectionshouldbecompactedtoaminimumof95% relativecompaction(ASTMD1557). x Subgradesoilsandaggregatebaseshouldbeinastable,nonͲpumpingconditionatthetime ofplacementandcompaction.ExposedfinalsubgradesshouldbeproofͲrolledtoverifythe absenceofsoftorunstablezones. x Subgradesoilsshouldbecompactedatorslightlyoveroptimummoisturecontent. x Aggregatebasematerialsshouldbecompactedatnearoptimummoisturecontenttoat least95%relativecompaction(ASTMD1557)andshouldconformtoCaltransClassII criteria. x Allcurbsseparatingpavementfromlandscapedareasshouldextendatleast6inchesinto thesubgradesoilstoreducethepotentialformovementofmoistureintotheaggregate baselayer(thisreducestheriskofpavementfailuresduetosubsurfacewateroriginating fromlandscapedareas).ThecurbingactsasamoisturecutͲoffbarrier. x Concretepavementsshouldbeconstructedwithtransversejointsatmaximumspacingof 12feet.Athickenededgeshouldbeusedwherepossibleand,asaminimum,where concretepavementsabutasphaltpavements.Thethickenededgeshouldbe1.2timesthe thicknessofthepavement(7.2inchesfora6.0Ͳinchpavement),andshouldtaperbackto thepavementthicknessoverahorizontaldistanceontheorderof3feet. x Alllongitudinalortransversecontroljointsshouldbeconstructedbyhandformingor placingapreͲmoldedfillersuchas"zipstrips."Expansionjointsshouldbeusedtoisolate fixedobjectsabuttingorwithinthepavementarea.Theexpansionjointshouldextendthe fulldepthofthepavement.Jointsshouldruncontinuouslyandextendthroughintegral curbsandthickenededges.Werecommendthatjointlayoutbeadjustedtocoincidewith March30,201632FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST thecornersofobjectsandstructures.Inaddition,thefollowingisrecommendedfor concretepavements: 1.Slopepavementatleast½percenttoprovidedrainage; 2.Provideroughsurfacetexturefortraction; 3.Cureconcretewithcuringcompoundorkeepcontinuouslymoistforaminimum ofsevendays; 4.Keepalltrafficoffconcreteuntilcompressivestrengthexceeds2,000poundsper squareinch(trucktrafficshouldbelimiteduntiltheconcretemeetsthedesign strength(3,650psi);and 5. Werecommendallconstructionjointsshouldbekeyedorslipdowelsshouldbe usedon24Ͳinchcenterstostrengthencontrolandconstructionjoints.Dowels placedwithindowelbasketsshouldbeincorporatedintotheconcreteateach sawͲcutcontroljoint(i.e.dowelbasketsanddowelsaresetinplacepriorto placementofconcrete). x Subgradesoilsandbasematerialsshouldbeinastable,nonͲpumpingconditionatthetime ofasphaltconcreteplacementandcompaction. x AsphaltconcretepavingandplacementmethodsshouldconformtotheCaltransorthe StandardSpecificationforPublicWorksreferredtointhe(“GreenBook”). x Portlandcementconcreteplacementandcuringshould,ataminimum,beinaccordance withtheAmericanConcreteInstitute[ACI]recommendationscontainedinACI211,304, 305,308,309,and318. x Withinthestructuralpavementsectionareas,positivedrainage(bothsurfaceand subsurface)shouldbeprovided.Innoinstanceshouldwaterbeallowedtopondonthe pavement,especiallyatjointsbetweencurb/guttersandthepavementsection.Roadway performancedependsgreatlyonhowwellrunoffwaterdrainsfromthesite.Saturated subgradesoilsandbasewillleadtoprematureroadwayfailure.Thisdrainageshouldbe maintainedbothduringconstructionandovertheentirelifeoftheproject. x Wherenewroadwayswillbeinstalledagainstexistingroadwaysortheroadwayisrepaired afterutilityinstallation,therepairedasphaltconcretepavementsectionshouldbedesigned andconstructedtohaveatleastthepavementandaggregatebasesectionastheoriginal pavementsectionthickness(forbothACandbase),oruponthenewlycalculatedpavement sectionspresentedwithin,whicheverisgreater. x Propermethods,suchashotͲsealingorcaulking,shouldbeemployedtolimitwater infiltrationintothepavementbasecourseand/orsubgradeatconstruction/expansionjoints and/orbetweenexistingandreconstructedpavementsections(ifany).Waterinfiltration couldleadtoprematurepavementfailure. x Toreducethepotentialfordetrimentalsettlement,excesssoilmaterial,and/orfillmaterial removedduringanyfootingorutilitytrenchexcavation,shouldnotbespreadorplaced overcompactedfinishedgradesoilsunlesssubsequentlycompactedtoatleast95%ofthe March30,201633FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST maximumdryunitweight,asevaluatedbyASTMD1557testprocedure,atnearoptimum moisturecontent,ifplacedunderareasdesignatedforpavement. x AsphalticconcreteshouldbeCaltransor“Greenbook”,½Ͳin.or¾Ͳin.gradingand compactedtoaminimumof95%ofthe75ͲblowMarshalldensity(ASTMD1559)or equivalent. x Theappropriatepavementdesignsectiondependsprimarilyontheshearstrengthofthe subgradesoilexposedaftergradingandanticipatedtrafficovertheusefullifeofthe pavement.RͲvaluetestingorconfirmationobservationshouldbeperformedduringgrading toverifyand/ormodifythepreliminarypavementsectionspresentedwithinthisreport. Pavementdesignsassumethatheavyconstructiontrafficwillnotbeallowedonbasecapor finishedpavementsections.  March30,201634FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Section6  LIMITATIONSANDADDITIONALSERVICES 6.1 UniformityofConditionsandLimitations Ourfindingsandrecommendationsinthisreportarebasedonselectedpointsoffield exploration,laboratorytesting,andourunderstandingoftheproposedproject.Conditionswill varybetweenandbeyondthepointsexplored.Thenatureandextentofthesevariationsmay notbecomeevidentuntilconstruction.Variationsinsoilorgroundwatermayrequire additionalstudies,consultation,andpossiblerevisionstoourrecommendations. Finalgradingandfoundationplanswerenotavailableforourreviewpriortothepreparationof thisreport,andtherefore,therecommendationspresentedwithinmaychangependinga reviewofthefinalgradingandfoundationplans.Recommendationspresentedinthisreport shouldnotbeextrapolatedtootherareasorbeusedforotherprojectswithoutourprior review. Theplanningandconstructionprocessisanintegraldesigncomponentwithrespecttothe geotechnicalaspectsofthisproject.Becausegeotechnicalengineeringisaninexactscience duetothevariabilityofnaturalprocessesandbecausewesampleonlyasmallportionofthe soilandmaterialaffectingtheperformanceoftheproposedstructure,unanticipatedor changedconditionscanbedisclosedduringdemolitionandconstruction.Propergeotechnical observationandtestingduringconstructionisimperativetoallowthegeotechnicalengineer theopportunitytoverifyassumptionsmadeduringthedesignprocessandtoverifythatour geotechnicalrecommendationshavebeenproperlyinterpretedandimplementedduring construction.Therefore,werecommendthatEarthSystemsberetainedduringthe constructionoftheproposedimprovementstoobservecompliancewiththedesignconcepts andgeotechnicalrecommendations,andtoallowdesignchangesintheeventthatsubsurface conditionsormethodsofconstructiondifferfromthoseassumedwhilecompletingthis commission.Ifwearenotaccordedtheprivilegeofperformingthisreview,wecanassumeno responsibilityformisinterpretationofourrecommendations.Theaboveservicescanbe providedinaccordancewithourcurrentFeeSchedule. Ourevaluationofsubsurfaceconditionsatthesitehasconsideredsubgradesoiland groundwaterconditionspresentatthetimeofourstudy.Theinfluence(s)ofpostͲconstruction changestotheseconditionssuchasintroductionorremovalofwaterintoorfromthe subsurfacewilllikelyinfluencefutureperformanceoftheproposedproject.Itshouldbe recognizedthatdefinitionandevaluationofsubsurfaceconditionsaredifficult.Judgments leadingtoconclusionsandrecommendationsaregenerallymadewithincompleteknowledge ofthesubsurfaceconditionsduetothelimitationofdatafromfieldstudies.Theavailabilityand broadeningofknowledgeandprofessionalstandardsapplicabletoengineeringservicesare continuallyevolving. March30,201635FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Assuch,ourservicesareintendedtoprovidetheClientwithasourceofprofessionaladvice, opinionsandrecommendationsbasedontheinformationavailableasapplicabletotheproject location,timeofourservices,andscope.Ifthescopeoftheproposedconstructionchanges fromthatdescribedinthisreport,theconclusionsandrecommendationscontainedinthis reportarenotconsideredvalidunlessthechangesarereviewed,andtheconclusionsofthis reportaremodifiedorapprovedinwritingbyEarthSystems.  Findingsofthisreportarevalidasoftheissueddateofthereport.However,changesin conditionsofapropertycanoccurwithpassageoftime,whethertheyarefromnatural processesorworksofman,onthisoradjoiningproperties.Inaddition,changesinapplicable standardsoccur,whethertheyresultfromlegislationorbroadeningofknowledge.Accordingly, findingsofthisreportmaybeinvalidatedwhollyorpartiallybychangesoutsideourcontrol. Therefore,thisreportissubjecttoreviewandshouldnotberelieduponafteraperiodofone year. Thisreportisissuedwiththeunderstandingthattheownerortheowner’srepresentativehas theresponsibilitytobringtheinformationandrecommendationscontainedhereintothe attentionofthearchitectandengineersfortheprojectsothattheyareincorporatedintothe plansandspecificationsfortheproject.Theownerortheowner’srepresentativealsohasthe responsibilitytoverifythatthegeneralcontractorandallsubcontractorsfollowsuch recommendations.Itisfurtherunderstoodthattheownerortheowner’srepresentativeis responsibleforsubmittalofthisreporttotheappropriategoverningagencies. AstheGeotechnicalEngineerofRecordforthisproject,EarthSystemshasstriventoprovide ourservicesinaccordancewithgenerallyacceptedgeotechnicalengineeringpracticesinthis localityatthistime.Nowarrantyorguarantee,expressorimplied,ismade.Thisreportwas preparedfortheexclusiveuseoftheClientandtheClient’sauthorizedagents. EarthSystemsshouldbeprovidedtheopportunityforageneralreviewoffinaldesignand specificationsinorderthatearthworkandfoundationrecommendationsmaybeproperly interpretedandimplementedinthedesignandspecifications.IfEarthSystemsisnotaccorded theprivilegeofmakingthisrecommendedreview,wecanassumenoresponsibilityfor misinterpretationofourrecommendations.Theownerortheowner’srepresentativehasthe responsibilitytoprovidethefinalplansrequiringreviewtoEarthSystems’attentionsothatwe mayperformourreview. AnypartyotherthantheclientwhowishestousethisreportshallnotifyEarthSystemsofsuch intendeduse.Basedontheintendeduseofthereport,EarthSystemsmayrequirethat additionalworkbeperformedandthatanupdatedreportbeissued.NonͲcompliancewithany oftheserequirementsbytheclientoranyoneelsewillreleaseEarthSystemsfromanyliability resultingfromtheuseofthisreportbyanyunauthorizedparty. AlthoughavailablethroughEarthSystems,thecurrentscopeofourservicesdoesnotincludean environmentalassessmentoraninvestigationforthepresenceorabsenceofwetlands, hazardousortoxicmaterialsinthesoil,surfacewater,groundwater,orairon,below,or adjacenttothesubjectproperty. March30,201636FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST 6.2 AdditionalServices Thisreportisbasedontheassumptionthataprogramofclientconsultation,construction monitoring,andtestingwillbeperformedduringthefinaldesignandconstructionphasesto checkcompliancewiththeserecommendations.MaintainingEarthSystemsasthe geotechnicalconsultantfrombeginningtoendoftheprojectwillprovidecontinuityofservices. Thegeotechnicalengineeringfirmprovidingtestsandobservationsshallassumethe responsibilityofGeotechnicalEngineerofRecord. Constructionmonitoringandtestingwouldbeadditionalservicesprovidedbyourfirm.The costsoftheseservicesarenotincludedinourpresentfeearrangements,butcanbeobtained fromouroffice.Therecommendedreview,tests,andobservationsinclude,butarenot necessarilylimitedtothefollowing: x Consultationduringthefinaldesignstagesoftheproject. x Areviewofthebuildingandgradingplanstoobservethatrecommendationsofourreport havebeenproperlyimplementedintothedesign. x Observationandtestingduringsitepreparation,grading,andplacementofengineeredfill. x SpecialInspectionforconcrete,masonry,steelduringconstruction. x Consultationasneededduringconstruction. Ͳo0oͲ Appendicesascitedareattachedandcompletethisreport. March30,201637FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST REFERENCES AlAtik,L.,andSitar,N.,2010,SeismicEarthPressuresonCantileverRetainingStructures,Journalof GeotechnicalandGeoenvironmentalEngineering,ASCE. AmericanConcreteInstitute[ACI],2004,ACIManualofConcretePractice,Parts1through5. AmericanConcreteInstitute[ACI],2004,ACI330R,GuidefortheDesignandConstructionof ConcreteParkingLots. AmericanConcreteInstitute(2004)“BuildingCodeRequirementsforStructuralConcrete(ACI318Ͳ 05)andCommentary(ACI318RͲ05).” AmericanSocietyofCivilEngineers[ASCE],2010,MinimumDesignLoadsforBuildingsandOther Structures,ASCE7Ͳ10. AmericanSocietyforTestingMaterials,2011,AnnualBookofStandards AmericanSocietyforTestingMaterials,1989,STP1013,EffectsofSoilCharacteristicsonCorrosion (February,1989). Bowles,J.E.,1988,FoundationAnalysisandDesign,FourthEdition,McGrawͲHillBookCompany. Bryant,W.A.andHart,E.W.(2007),FaultͲRuptureHazardZonesinCalifornia:California GeologicalSurvey,SpecialPublication42. CaliforniaDepartmentofWaterResources,1964,CoachellaValleyInvestigation,BulletinNo.108, 146pp. CaliforniaGeologicSurvey,2008,“GuidelinesforEvaluatingandMitigatingSeismicHazardsin California,”CGSSpecialPublication117A. CountyofRiverside,GeographicInformationServices(GIS),TransportationandLand ManagementAgency,http://www3.tlma.co.riverside.ca.us/pa/rclis/index.html. Coduto,D.P.,2000,FoundationDesign:PrinciplesandPractices(2ndEdition). Day,R.W.,2000,GeotechnicalEngineersPortableHandbook,McGrawͲHillCompanies. Dept.oftheNavy,1986,NAVFACDM7.01:SoilMechanics,NavalFacilitiesEngineering Command,Alexandria,Virginia. Dept.oftheNavy,1986,NAVFACDM7.02:FoundationsandEarthStructures,NavalFacilities EngineeringCommand,Alexandria,Virginia. EarthSystemsSouthwest,2004,TheLivingDesertAdministrationBuilding,47Ͳ900Portola Avenue,PalmDesert,California,datedNovember5,2004,FileNo.:08303Ͳ03,DocNo.: 04Ͳ10Ͳ835. EarthSystemsSouthwest,2009,ProposedCarousel,TheLivingDesert,47Ͳ900PortolaAvenue, PalmDesert,California,datedMarch30,2009,FileNo.:08303Ͳ06,DocNo.:09Ͳ03Ͳ796. EarthSystemsSouthwest,2010,TheLivingDesertProposedJaguarEnclosure,47Ͳ900Portola Avenue,PalmDesert,California,datedMay28,2010,FileNo.:08303Ͳ08,DocNo.:10Ͳ 05Ͳ789. FEMA,2016,MapServiceCenterwebsitehttp://msc.fema.gov/ March30,201638FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Fontana,Mike,2016,“TheLivingDesert”,MessagetoTonyColarossi,RReed,MariuszBleszynski, andBertBuxbaum,February8,2016.EͲmail CaliforniaBuildingCode,2013Edition. Jennings,C.W,2010,FaultActivityMapofCalifornia;CaliforniaGeologicSurvey,GeologicalData MapNo.6,scale1:750,000. OccupationalSafetyandHealthStandards–Excavations,FinalPub.1989. Reichard,E.G.andMead,J.K.,1991,EvaluationofaGroundwaterFlowandTransportModelof theUpperCoachellaValley,California,U.S.G.S.OpenͲFileReport91Ͳ4142. RiversideCountyLandInformationSystem(RCLIS),TransportationandLandManagement Agency,CountyofRiverside,California,Website: http://www3.tlma.co.riverside.ca.us/pa/rclis/index.html Rogers,T.H.,1966,GeologicMapofCaliforniaͲSantaAnaSheet,CaliforniaDivisionofMinesand GeologyRegionalMapSeries,scale1:250,000. Sneed,MichelleandBrandt,JustinT.,2007,DetectionandMeasurementofLandSubsidence UsingGlobalPositioningSystemSurveyingandInterferometricSyntheticApertureRadar, CoachellaValley,California,1996Ͳ2005,UnitedStatesGeologicSurveyScientific InvestigationsReport2007Ͳ5251,31p. Sneed,Michelle,2010,MeasurementofLandSubsidenceusingInterferometry,CoachellaValley, California,LandSubsidence,AssociatedHazardsandtheRoleofNaturalResources Development,ProceedingsofEISOLS2010,Queretaro,Mexico,IAHSPubl.339. Sneed,Michelle,etal,2014,LandSubsidence,GroundwaterLevels,andGeologyintheCoachella Valley,California,1993Ͳ2010,UnitedStatesGeologicalSurvey,ScientificInvestigations Report2014Ͳ5075. SouthernCaliforniaEarthquakeCenter(S.C.E.C.),1999,RecommendedProceduresfor ImplementationofDMGSpecialPublication117,GuidelinesforAnalyzingandMitigating LiquefactionHazardsinCalifornia,publishedbySouthernCaliforniaEarthquakeCenter (SCEC),datedMarch1999. Tokimatsu,K,andSeed,H.B.,1987,EvaluationofSettlementsinSandsDueToEarthquakeShaking, ASCE,JournalofGeotechnicalEngineering,Vol.113,No.8,August1987. UnitedStatesGeologicalSurvey,2008,Documentationforthe2008UpdateoftheUnited StatesNationalSeismicHazardMaps:U.S.GeologicalSurveyOpenͲFileReport2008– 1128,61p. UnitedStatesGeologicSurvey,2014,DesignMapswebsite:http://ehp3Ͳ earthquake.wr.usgs.gov/designmaps/. Wallace,R.E.,1990,TheSanAndreasFaultSystem,California:U.S.GeologicalSurveyProfessional Paper1515,283p. WorkingGrouponCaliforniaEarthquakeProbabilities,2008,TheUniformCaliforniaEarthquake RuptureForecast,Version2[UCERF2]:U.S.GeologicalSurveyOpenͲFileReport2007Ͳ 1437andCaliforniaGeologicalSurveySpecialReport203,104p. March30,201639FileNo.:PIDͲ000166Ͳ001 Doc.No.:16Ͳ03Ͳ714  EARTHSYSTEMSSOUTHWEST Youd,T.L.,andIdriss,I.M.,2001,LiquefactionResistanceofSoils:SummaryReportfromthe 1996NCEERand1998NCEER/NSFWorkshopsonEvaluationofLiquefactionResistance ofSoils,JournalofGeotechnicalandGeoenvironmentalEngineering,Vol.127,No.10, October2001. AerialPhotographs: GoogleEarth 2002,2004,2009,2011,&2012   EARTHSYSTEMSSOUTHWEST APPENDIXA Plate1–SiteLocationMap Plate2–BoringandTestPitLocationMap Plate3through7(HistoricImages) TableAͲ1–FaultParameters TableAͲ2–HistoricEarthquakesinVicinityofProjectSite,M>5.5 TermsandSymbolsUsedonBoringLogs SoilClassificationSystem LogsofBorings SeismicSettlementCalculation SiteClassEstimator(2pages) Base Map: Google Earth satellite image with historical USGS Topographic Map overlay. Scale: 1" = 1 Mile 0 1 Mile 2 Miles Plate 1 Site Location Map Earth Systems Southwest Approximate Site Location 3/30/2016 File No.: PID-000166-001 Living Desert Phase I Entry 47900 Portola Avenue Palm Desert, Riverside County, California APPROXIMATE SITE LOCATION APPROXIMATE SITE LOCATIONPortola AvenuePortola AvenueLEGEND Haystack RoadHaystack Road Base Map: Google Earth satellite image dated 3/15/2015 with site plan overlay. Scale: 1" = 85’ 0 85’ 170’ Plate 2 Boring & Test Location Map Earth Systems Southwest 3/30/2016 File No.: PID-000166-001 Living Desert Phase I Entry 47900 Portola Avenue Palm Desert, Riverside County, California LEGEND Approximate Boring Locations B-7B-7 B-1B-1 B-7B-7 B-6B-6 B-5B-5 B-2B-2 B-3B-3 B-4B-4 Existing Proposed New Buildings And Entry Sign Area 3/30/2016 Ear Sout Historic Aerial P Living De 47900 Palm Desert, Riv Source: Google Earth satellite image dated 5/27/2002. Approximate Scale: 1" = 250’ 0 250’ 500’ 3/30/2016 Ear Sout Historic Aerial P Living De 47900 Palm Desert, Riv Source: Google Earth satellite image dated 11/26/2004. Approximate Scale: 1" = 250’ 0 250’ 500’ 3/30/2016 Ear Sout Historic Aerial Living De 47900 Palm Desert, Riv Source: Google Earth satellite image dated 6/5/2009. Approximate Scale: 1" = 250’ 0 250’ 500’ 3/30/2016 Ear Sout Historic Aerial P Living De 47900 Palm Desert, Riv Source: Google Earth satellite image dated 6/23/2011. Approximate Scale: 1" = 250’ 0 250’ 500’ 3/30/2016 Ear Sout Historic Aerial P Living De 47900 Palm Desert, Riv Source: Google Earth satellite image dated 11/26/2012. Approximate Scale: 1" = 250’ 0 250’ 500’ Terms and Symbols used on Boring Logs Earth Systems Southwest DESCRIPTION FIELD TEST A 1/8 in. (3-mm) thread cannot be rolled at any moisture content. Nonplastic PLASTICITY Low Medium High The thread can barely be rolled. The thread is easy to roll and not much time is required to reach the plastic limit. The thread can be rerolled several times after reaching the plastic limit. MOISTURE CONDITION Dry.....................Absence of moisture, dusty, dry to the touch Damp................Slight indication of moisture Moist.................Color change with short period of air exposure (granular soil) Below optimum moisture content (cohesive soil) Wet....................High degree of saturation by visual and touch (granular soil) Above optimum moisture content (cohesive soil) Saturated..........Free surface water RELATIVE PROPORTIONS Trace.............minor amount (<5%) with/some......significant amount modifier/and...sufficient amount to influence material behavior (Typically >30%) Moisture Condition: Moisture Content: Dry Density: An observational term; dry, damp, moist, wet, saturated. The weight of water in a sample divided by the weight of dry soil in the soil sample expressed as a percentage. The pounds of dry soil in a cubic foot of soil. MOISTURE DENSITY Very Soft Soft Medium Stiff Stiff Very Stiff Hard *N=0-1 N=2-4 N=5-8 N=9-15 N=16-30 N>30 *C=0-250 psf C=250-500 psf C=500-1000 psf C=1000-2000 psf C=2000-4000 psf C>4000 Squeezes between fingers Easily molded by finger pressure Molded by strong finger pressure Dented by strong finger pressure Dented slightly by finger pressure Dented slightly by a pencil point or thumbnail CONSISTENCY OF COHESIVE SOILS (CLAY OR CLAYEY SOILS) Very Loose Loose Medium Dense Dense Very Dense *N=0-4 N=5-10 N=11-30 N=31-50 N>50 RD=0-30 RD=30-50 RD=50-70 RD=70-90 RD=90-100 Easily push a 1/2-inch reinforcing rod by hand Push a 1/2-inch reinforcing rod by hand Easily drive a 1/2-inch reinforcing rod with hammer Drive a 1/2-inch reinforcing rod 1 foot with difficulty by a hammer Drive a 1/2-inch reinforcing rod a few inches with hammer *N=Blows per foot in the Standard Penetration Test at 60% theoretical energy. For the 3-inch diameter Modified California sampler, 140-pound weight, multiply the blow count by 0.63 (about 2/3) to estimate N. If automatic hammer is used, multiply a factor of 1.3 to 1.5 to estimate N. RD=Relative Density (%). C=Undrained shear strength (cohesion). RELATIVE DENSITY OF GRANULAR SOILS (GRAVELS, SANDS, AND NON-PLASTIC SILTS) SOIL GRAIN SIZE 12”3”3/4”4 10 40 200 305 76.2 19.1 4.76 2.00 0.42 0.074 0.002 SOIL GRAIN SIZE IN MILLIMETERS U.S. STANDARD SIEVE COARSE FINEBOULDERSCOBBLES GRAVEL SAND COARSE MEDIUM FINE SILT CLAY Soil classification is based on ASTM Designations D 2487 and D 2488 (Unified Soil Classification System). Information on each boring log is a compilation of subsurface conditions obtained from the field as well as from laboratory testing of selected samples. The indicated boundaries between strata on the boring logs are approximate only and may be transitional. DESCRIPTIVE SOIL CLASSIFICATION LOG KEY SYMBOLS Bulk, Bag or Grab Sample Standard Penetration Split Spoon Sampler (2” outside diameter) Modified California Sample (3” outside diameter) No Recovery GROUNDWATER LEVEL Water Level (measured or after drilling) Water Level (during drilling) Soil Classification System Earth Systems Southwest MAJOR DIVISIONS GRAPHIC SYMBOL LETTER SYMBOL TYPICAL DESCRIPTIONS COARSE GRAINED SOILS FINE-GRAINED SOILS GRAVEL AND GRAVELLY SOILS SAND AND SANDY SOILS SILTS AND CLAYS CLEAN GRAVELS GRAVELS WITH FINES CLEAN SAND (Little or no fines) SAND WITH FINES (appreciable amount of fines) LIQUID LIMIT THAN 50LESS LIQUID LIMIT THAN 50 GREATER HIGHLY ORGANIC SOILS VARIOUS SOILS AND MAN MADE MATERIALS MAN MADE MATERIALS PT GW GP GM GC SW SP SM SC ML CL OL MH CH OH :HOOJUDGHG JUDYHOV JUDQGVDQG PL[WXUHV OLWWOH RU QR ILQH 3RRUO\JUDGHG JUDYHOV JUDYHOVDQG PL[WXUHV /LWWOH RU QR ILQHV 6LOW\ JUDYHOV JUDYHOVDQGVLOW PL[WXUHV &OD\H\ JUDYHOV JUDYHOVDQGFOD\ PL[WXUHV 0RUH WKDQ  RI PDWHULDO LV WKDQ 1R  VLHYH VL]H ODUJHU 0RUH WKDQ  RI PDWHULDO LV WKDQ 1R  VLHYH VL]H VPDOOHU 0RUH WKDQ  RI FRDUVH IUDFWLRQ 1R  VLHYHSDVVLQJ :HOOJUDGHG VDQGV JUDYHOO\ VDQGV OLWWOH RU QR ILQHV 3RRUO\JUDGHG VDQGV JUDYHOO\ VDQGV OLWWOH RU QR ILQHV 6LOW\ VDQGV VDQGVLOW PL[WXUHV &OD\H\ VDQGV VDQGFOD\ PL[WXUHV ,QRUJDQLF VLOWV DQG YHU\ ILQH VDQGV URFN IORXU VLOW\ ORZ FOD\H\ ILQH VDQGV RU FOD\H\ VLOWV ZLWK VOLJKW SODVWLFLW\ ,QRUJDQLF FOD\V RI ORZ WR PHGLXP SODVWLFLW\ JUDYHOO\ FOD\V VDQG\ FOD\V VLOW\ FOD\V OHDQ FOD\V 2UJDQLF VLOWV DQG RUJDQLF VLOW\ FOD\V RI ORZ SODVWLFLW\ ,QRUJDQLF VLOW\ PLFDFHRXV RU GLDWRPDFHRXV ILQH VDQG RU VLOW\ VRLOV ,QRUJDQLF FOD\V RI KLJK SODVWLFLW\ IDW FOD\V 2UJDQLF FOD\V RI PHGLXP WR KLJK SODVWLFLW\ RUJDQLF VLOWV 3HDW KXPXV VZDPS VRLOV ZLWK KLJK RUJDQLF FRQWHQWV )LOO 0DWHULDOV $VSKDOW DQG FRQFUHWH 0RUH WKDQ  RI FRDUVH IUDFWLRQ RQ 1R  VLHYH UHWDLQHG 0 5 10 15 20 25 30 35 40 Boring No: Project Name Project Number: Boring Location: Drilling Method:Depth (Ft.)Sample Type Penetration Resistance (Blows/6")SymbolUSCSDry DensityPage 1 of 1 Drilling Date: Drill Type: Logged By:BulkSPTMOD Calif.Description of Units (pcf)MoistureContent (%)Note: The stratification lines shown represent the approximate boundary between soil and/or rock types and the transition may be gradational. Blow Dry Graphic Trend Earth Systems Southwest Count Density no recovery, logged from auger cuttings no recovery auger binding, grinding, bouncing, increase in moisture in auger cuttings no recovery, relocated twice, auger refusal at 11' Boring completed at 11' No groundwater encountered Backfilled with native soil WELL GRADED SAND WITH SILT AND GRAVEL: Brown; fine to coarse grained sand, fine gravel, medium dense, damp 1121 SW-SM 12, 10, 11 4, 5, 14 50 for 5" 50 for 2" B-1 Living Desert Reserve Entry Phase I PID-000166-001 See Plate 2 March 3, 2016 HSA w/auto hammer CME 75 Limited Access Track Rig R. Howe 79-811 Country Club Rd., Bermuda Dunes, CA 92201 Phone (760) 345-1588, Fax (760) 345-7315 0 5 10 15 20 25 30 35 40 Boring No: Project Name Project Number: Boring Location: Drilling Method:Depth (Ft.)Sample Type Penetration Resistance (Blows/6")SymbolUSCSDry DensityPage 1 of 1 Drilling Date: Drill Type: Logged By:BulkSPTMOD Calif.Description of Units (pcf)MoistureContent (%)Note: The stratification lines shown represent the approximate boundary between soil and/or rock types and the transition may be gradational. Blow Dry Graphic Trend Earth Systems Southwest Count Density dense, damp small cobble or coarse gravel in lower rings and sampler tip no recovery, medium dense no recovery Boring completed at 31' No groundwater encountered 3" perforated pipe with cloth sleeve and 3/4" gravel-pack inserted for percolation testing Backfilled with native soil after percolation test on March 4, 2016 WELL GRADED SAND WITH SILT AND GRAVEL: Yellow brown; fine to coarse grained sand, fine gravel, medium dense, moist POORLY GRADED SAND WITH SILT: Yellow brown; fine to medium grained sand, very dense, damp WELL GRADED SAND WITH SILT: Yellow brown; fine to coarse grained sand, some fine gravel, very dense, damp 2 1 1 110 129 112 SW-SM SP-SM SW-SM 8, 8, 13 12, 23, 35 14, 28, 30 16, 24, 28 19, 50 for 6" 17, 19, 21 18, 50 for 6" 32, 50 for 2" B-2 Living Desert Reserve Entry Phase I PID-000166-001 See Plate 2 March 3, 2016 HSA w/auto hammer CME 75 Limited Access Track Rig R. Howe 79-811 Country Club Rd., Bermuda Dunes, CA 92201 Phone (760) 345-1588, Fax (760) 345-7315 0 5 10 15 20 25 30 35 40 Boring No: Project Name Project Number: Boring Location: Drilling Method:Depth (Ft.)Sample Type Penetration Resistance (Blows/6")SymbolUSCSDry DensityPage 1 of 1 Drilling Date: Drill Type: Logged By:BulkSPTMOD Calif.Description of Units (pcf)MoistureContent (%)Note: The stratification lines shown represent the approximate boundary between soil and/or rock types and the transition may be gradational. Blow Dry Graphic Trend Earth Systems Southwest Count Density yellow brown medium dense, damp auger bouncing no recovery auger bouncing, grinding, binding, auger refusal at 26' Boring completed at 26' No groundwater encountered Backfilled with native soil WELL GRADED SAND WITH SILT AND GRAVEL: Reddish brown to yellow brown; fine to coarse grained sand, fine gravel, medium dense, moist POORLY GRADED SAND WITH SILT: Yellow brown; fine grained sand with trace medium to coarse grained sand, some fine gravel, medium dense, damp POORLY GRADED SAND WITH GRAVEL: Yellow brown; fine to medium grained sand, coarse gravel in upper ring, dense, damp WELL GRADED SAND: Yellow brown; fine to coarse grained sand, dense, damp 2 2 2 3 118 120 122 116 SW-SM SP-SM SP SW 6, 13, 23 19, 22, 22 15, 24, 28 7, 19, 24 14, 24, 50 50 for 5" 50 for 4" B-3 Living Desert Reserve Entry Phase I PID-000166-001 See Plate 2 March 3, 2016 HSA w/auto hammer CME 75 Limited Access Track Rig R. Howe 79-811 Country Club Rd., Bermuda Dunes, CA 92201 Phone (760) 345-1588, Fax (760) 345-7315 0 5 10 15 20 25 30 35 40 Boring No: Project Name Project Number: Boring Location: Drilling Method:Depth (Ft.)Sample Type Penetration Resistance (Blows/6")SymbolUSCSDry DensityPage 1 of 1 Drilling Date: Drill Type: Logged By:BulkSPTMOD Calif.Description of Units (pcf)MoistureContent (%)Note: The stratification lines shown represent the approximate boundary between soil and/or rock types and the transition may be gradational. Blow Dry Graphic Trend Earth Systems Southwest Count Density Boring completed at 6-1/2 ' No groundwater encountered Backfilled with native soil WELL GRADED SAND: Yellow brown; fine to coarse grained sand, medium dense, moist POORLY GRADED SAND: Yellow brown; fine to medium grained sand, medium dense, moist 3 3 106 113 SW SP 10, 16, 28 10, 14, 18 B-4 Living Desert Reserve Entry Phase I PID-000166-001 See Plate 2 March 3, 2016 HSA w/auto hammer CME 75 Limited Access Track Rig R. Howe 79-811 Country Club Rd., Bermuda Dunes, CA 92201 Phone (760) 345-1588, Fax (760) 345-7315 0 5 10 15 20 25 30 35 40 Boring No: Project Name Project Number: Boring Location: Drilling Method:Depth (Ft.)Sample Type Penetration Resistance (Blows/6")SymbolUSCSDry DensityPage 1 of 1 Drilling Date: Drill Type: Logged By:BulkSPTMOD Calif.Description of Units (pcf)MoistureContent (%)Note: The stratification lines shown represent the approximate boundary between soil and/or rock types and the transition may be gradational. Blow Dry Graphic Trend Earth Systems Southwest Count Density some fine gravel in upper rings Boring completed at 10' No groundwater encountered 3-inch perforated pipe with cloth sleeve and 3/4" gravel pack inserted for percolation testing Backfilled with native soil after completion of percolation test on March 4, 2016 POORLY GRADED SAND WITH SILT: Yellow brown; fine grained sand, medium dense, damp WELL GRADED SAND WITH SILT AND GRAVEL: Yellow brown; fine to coarse grained sand, fine gravel, dense, damp 1 1 1 116 133 123 SP-SM SW-SM 16, 18, 23 14, 32, 35 15, 27, 50 for 3" B-5 Living Desert Reserve Entry Phase I PID-000166-001 See Plate 2 March 3, 2016 HSA w/auto hammer CME 75 Limited Access Track Rig R. Howe 79-811 Country Club Rd., Bermuda Dunes, CA 92201 Phone (760) 345-1588, Fax (760) 345-7315 0 5 10 15 20 25 30 35 40 45 Boring No: Project Name Project Number: Boring Location: Drilling Method:Depth (Ft.)Sample Type Penetration Resistance (Blows/6")SymbolUSCSDry DensityPage 1 of 1 Drilling Date: Drill Type: Logged By:BulkSPTMOD Calif.Description of Units (pcf)MoistureContent (%)Note: The stratification lines shown represent the approximate boundary between soil and/or rock types and the transition may be gradational. Blow Dry Graphic Trend Earth Systems Southwest Count Density increasing coarse grained sand dense medium dense very dense no recovery partial recovery, small cobble in lower rings and sampler tip no recovery Boring completed at 41' No groundwater encountered Backfilled with native soil POORLY GRADED SAND WITH SILT AND GRAVEL: Yellow brown; fine to medium grained sand, medium dense, damp, coarse gravel in sampler tip and lower ring WELL GRADED SAND WITH SILT AND GRAVEL: Yellow brown; fine to coarse grained sand, fine gravel, medium dense, damp, POORLY GRADED SAND WITH SILT AND GRAVEL: Yellow brown; fine to medium grained sand, fine gravel, very dense, damp 1 1 1 1 1 120 109 127 126 128 SP-SM SW-SM SP-SM 10, 17, 27 9, 12, 17 21, 20, 30 17, 29, 35 33, 24, 19 13, 14, 25 19, 25, 36 22, 28, 28 33, 50 for 6" 50 for 2" B-6 Living Desert Reserve Entry Phase I PID-000166-001 See Plate 2 March 3, 2016 HSA w/auto hammer CME 75 Limited Access Track Rig R. Howe 79-811 Country Club Rd., Bermuda Dunes, CA 92201 Phone (760) 345-1588, Fax (760) 345-7315 0 5 10 15 20 25 30 35 40 Boring No: Project Name Project Number: Boring Location: Drilling Method:Depth (Ft.)Sample Type Penetration Resistance (Blows/6")SymbolUSCSDry DensityPage 1 of 1 Drilling Date: Drill Type: Logged By:BulkSPTMOD Calif.Description of Units (pcf)MoistureContent (%)Note: The stratification lines shown represent the approximate boundary between soil and/or rock types and the transition may be gradational. Blow Dry Graphic Trend Earth Systems Southwest Count Density no recovery, medium dense, logged from auger cuttings medium dense, some fine gravel dense, coarse gravel in lower ring some fine gravel Boring completed at 13-1/2' No groundwater encountered 3-inch perforated pipe with cloth sleeve and 3/4" gravel pack inserted for percolation testing Backfilled with native soil after completion of percolation test on March 4, 2016 WELL GRADED SAND WITH SILT: Yellow brown; fine to coarse grained sand, damp 1 1 1 124 136 121 SW-SM 16, 18, 25 14, 19, 22 13, 25, 50 for 3" 18, 28, 35 B-7 Living Desert Reserve Entry Phase I PID-000166-001 See Plate 2 March 3, 2016 HSA w/auto hammer CME 75 Limited Access Track Rig R. Howe 79-811 Country Club Rd., Bermuda Dunes, CA 92201 Phone (760) 345-1588, Fax (760) 345-7315 67(06(9$/8$7,212)/,48()$&7,21327(17,$/$1',1'8&('68%6,'(1&( /LYLQJ'HVHUW3KDVH,(QWU\3URMHFW1R1&((50HWKRG WKTXDNH0DJQLWXGH  3*$J  &DOF*:7 IHHW    OH/D\HUVIHHW (VWLPDWHG7RWDO*URXQG6XEVLGHQFHLQFKHV          'HSWK IHHW )DFWRURI6DIHW\               'HSWK IHHW 9ROXPHWULF6WUDLQ         'HSWK IHHW 6371 6371 1  Depth (ft) Blow Type of di N60 N60HE Vsi**Vsi Ɏi di/N60i di/Vsi di/Ɏi Consistency if Consistency if Count Sampler (feet) (blows/ft) (blows/ft) (m/sec)(ft/sec) (degrees)CoarseGrained FineGrained 2.5 21 c 2.5 11.96 15.95 224.35 735.88 31.21 0.15678 0.00340 0.080112 MediumDense Stiff Degrees Minutes Seconds Decimal (deg.)5.0 58 c 2.5 33.03 44.04 301.22 988.01 36.50 0.05676 0.00253 0.068497 Dense Hard 33.6988 7.5 58 c 2.5 33.03 44.04 301.22 988.01 36.50 0.05676 0.00253 0.068497 Dense Hard 10.0 52 c 2.5 29.61 39.49 291.83 957.21 35.85 0.06331 0.00261 0.069728 MediumDense VeryStiff Degrees Minutes Seconds Decimal (deg.)15.0 77 c 5.0 49.70 58.47 327.02 1072.62 38.27 0.08552 0.00466 0.130661 Dense Hard Ͳ116.3737 20.0 40 s 5.0 51.68 45.33 303.76 996.32 36.67 0.11029 0.00502 0.136344 VeryDense Hard 25.0 77 c 5.0 55.55 58.47 327.02 1072.62 38.27 0.08552 0.00466 0.130661 VeryDense Hard 30.0 77 s 5.0 104.72 87.27 367.29 1204.72 41.02 0.05730 0.00415 0.12188 VeryDense Hard 1015 (Upper30 feet) ) Cb)* Auger 995 (Upper100 feet) tion (Cs)Total: 30.0 Total: 0.67225 0.02956 0.806381 lerUsed lerUsed **CaltransGeotechnicalServicesDesignManual,Version1.0,August2009 usingN60HEcorrectedonlyforHammerEnergy ound (ft) ConsistencyclassificationbaseduponASCE1996 Over (ft)* SpreadsheetVersion2.2.1,2011:PreparedbyKevinL.Paul,PE,GE ethod (TXLSPHQW YDULDEOH &RUUHFWLRQ  'RQXW +DPPHU WR 6DIHW\ +DPPHU WR $XWRPDWLF 7ULS'RQXW W\SH+DPPHU WR LivingDesertPhaseIE 166Ͳ001 8"HSA RH CalPac Estimated Shear Wave Velocity ** Soil Profile Type (Site Class) D Ave. SPT N-value (blows/ft) 45 Ave. Shear Wave Velocity (ft/sec)** D Ave. Friction Angle (degrees) 37 BasedonDepthLessthan100'(ft/sec) Soil Profile Type (Site Class)** Depth (ft) Blow Type of di N60 N60HE Vsi**Vsi Ɏi di/N60i di/Vsi di/Ɏi Consistency if Consistency if Count Sampler (feet) (blows/ft) (blows/ft) (m/sec)(ft/sec) (degrees)CoarseGrained FineGrained 2.5 44 c 2.5 25.06 33.41 278.03 911.94 34.91 0.07483 0.00274 0.071622 MediumDense VeryStiff Degrees Minutes Seconds Decimal (deg.)5.0 29 c 2.5 16.52 22.02 246.37 808.09 32.73 0.11353 0.00309 0.076392 MediumDense VeryStiff 33.6994 7.5 50 c 2.5 28.48 37.97 288.53 946.38 35.63 0.06585 0.00264 0.070172 MediumDense VeryStiff 10.0 64 c 2.5 36.45 48.60 309.94 1016.62 37.10 0.05144 0.00246 0.067392 Dense Hard Degrees Minutes Seconds Decimal (deg.)15.0 43 c 5.0 27.75 32.65 276.18 905.88 34.78 0.15313 0.00552 0.143768 MediumDense VeryStiff Ͳ116.3734 20.0 39 s 5.0 50.39 44.20 301.54 989.04 36.52 0.11312 0.00506 0.136913 VeryDense Hard 25.0 61 c 5.0 44.00 46.32 305.66 1002.56 36.80 0.10795 0.00499 0.135861 Dense Hard 30.0 56 s 5.0 76.16 63.47 334.89 1098.44 38.81 0.07878 0.00455 0.128846 VeryDense Hard 35.0 77 c 5.0 58.47 58.47 327.02 1072.62 38.27 0.08552 0.00466 0.130661 VeryDense Hard 40.0 77 s 5.0 104.72 87.27 367.29 1204.72 41.02 0.05730 0.00415 0.12188 VeryDense Hard 1003 (Upper40 feet) ) Cb)* Auger 988 (Upper100 feet) tion (Cs)Total: 40.0 Total: 0.90144 0.03986 1.083508 lerUsed lerUsed **CaltransGeotechnicalServicesDesignManual,Version1.0,August2009 usingN60HEcorrectedonlyforHammerEnergy ound (ft) ConsistencyclassificationbaseduponASCE1996 Over (ft)* SpreadsheetVersion2.2.1,2011:PreparedbyKevinL.Paul,PE,GE ethod (TXLSPHQW YDULDEOH &RUUHFWLRQ  'RQXW +DPPHU WR 6DIHW\ +DPPHU WR $XWRPDWLF 7ULS'RQXW W\SH+DPPHU WR LivingDesertPhaseIE 166Ͳ001 8"HSA RH CalPac Estimated Shear Wave Velocity ** Soil Profile Type (Site Class) D Ave. SPT N-value (blows/ft) 44 Ave. Shear Wave Velocity (ft/sec)** D Ave. Friction Angle (degrees) 37 BasedonDepthLessthan100'(ft/sec) Soil Profile Type (Site Class)**  EARTHSYSTEMSSOUTHWEST APPENDIXB LaboratoryTestResults   FileNo.:PIDͲ000166Ͳ001 LabNo.:16Ͳ045 UNITDENSITIESANDMOISTURECONTENT ASTMD2937&D2216 JobName:LivingDesertPhase1Entry Unit Moisture USCS Sample Depth Dry Content Group Location (feet) Density(pcf) (%) Symbol B1 5 121 1 SWͲSM B2 2.5 110 2 SWͲSM B2 5 129 1 SWͲSM B2 25 112 1 SWͲSM B3 2.5 118 2 SWͲSM B3 5 120 2 SWͲSM B3 10 122 2 SPͲSM B3 15 116 3 SP B4 2.5 106 3 SW B4 5 113 3 SP B5 2.5 116 1 SPͲSM B5 5 133 1 SWͲSM B5 7.5 123 1 SWͲSM B6 2.5 120 1 SPͲSM B6 5 109 1 SPͲSM B6 7.5 127 1 SWͲSM B6 10 126 1 SWͲSM B6 15 128 1 SWͲSM B7 5 124 1 SWͲSM B7 7.5 136 1 SWͲSM B7 10 121 1 SWͲSM March30,2016 EARTHSYSTEMSSOUTHWEST FileNo.:PIDͲ000166Ͳ001 LabNo.:16Ͳ045 SIEVEANALYSIS ASTMD6913 JobName: LivingDesertPhase1Entry SampleID: B2@25feet Description: WellGradedSandw/Silt(SWͲSM) SieveSize %Passing 3" 100 2" 100 1Ͳ1/2" 100 1" 100 3/4" 100 1/2" 99 3/8" 97 #4 91 #10 77 #16 59 #30 37 #40 30 #100 19 #200 9.0 %CoarseGravel: 0 %CoarseSand: 14 %FineGravel: 9 %MediumSand: 47 Cu: 15 %FineSand: 21 Cc: 1.8 Gradation %TotalGravel 9 %TotalSand 82 %Fines: 8.9 WellGraded 3/30/2016            %PassingSIEVESize,mm Coarse Gravel Fine Gravel Coarse Sand FineSand SiltsandClaysMediumSand EARTHSYSTEMSSOUTHWEST FileNo.:PIDͲ000166Ͳ001 LabNo.:16Ͳ045 SIEVEANALYSIS ASTMD6913 JobName: LivingDesertPhase1Entry SampleID: B3@2.5feet Description: WellGradedSandw/Silt&Gravel(SWͲSM) SieveSize %Passing 3" 100 2" 100 1Ͳ1/2" 100 1" 100 3/4" 100 1/2" 94 3/8" 92 #4 84 #10 67 #16 52 #30 34 #40 25 #100 16 #200 9.3 %CoarseGravel: 0 %CoarseSand: 17 %FineGravel: 17 %MediumSand: 42 Cu: 19.6 %FineSand: 16 Cc: 2.13 Gradation %TotalGravel 17 %TotalSand 75 %Fines: 9.2 WellGraded 3/30/2016            %PassingSIEVESize,mm Coarse Gravel Fine Gravel Coarse Sand FineSand SiltsandClaysMediumSand EARTHSYSTEMSSOUTHWEST FileNo.:PIDͲ000166Ͳ001 LabNo.:16Ͳ045 SIEVEANALYSIS ASTMD6913 JobName: LivingDesertPhase1Entry SampleID: B5@7.5feet Description: WellGradedSandw/Silt&Gravel(SWͲSM) SieveSize %Passing 3" 100 2" 100 1Ͳ1/2" 100 1" 100 3/4" 100 1/2" 98 3/8" 95 #4 81 #10 60 #16 47 #30 32 #40 26 #100 10 #200 5.3 %CoarseGravel: 0 %CoarseSand: 21 %FineGravel: 19 %MediumSand: 35 Cu: 13.7 %FineSand: 20 Cc: 0.99 Gradation %TotalGravel 19 %TotalSand 76 %Fines: 5.2 WellGraded 3/30/2016            %PassingSIEVESize,mm Coarse Gravel Fine Gravel Coarse Sand FineSand SiltsandClaysMediumSand EARTHSYSTEMSSOUTHWEST FileNo.:PIDͲ000166Ͳ001 LabNo.:16Ͳ045 SIEVEANALYSIS ASTMD6913 JobName: LivingDesertPhase1Entry SampleID: B7@10feet Description: WellGradedSandw/Silt(SWͲSM) SieveSize %Passing 3" 100 2" 100 1Ͳ1/2" 100 1" 100 3/4" 100 1/2" 99 3/8" 95 #4 86 #10 60 #16 41 #30 25 #40 19 #100 12 #200 7.7 %CoarseGravel: 0 %CoarseSand: 27 %FineGravel: 14 %MediumSand: 41 Cu: 18 %FineSand: 11 Cc: 2.38 Gradation %TotalGravel 14 %TotalSand 79 %Fines: 7.6 WellGraded 3/30/2016            %PassingSIEVESize,mm Coarse Gravel Fine Gravel Coarse Sand FineSand SiltsandClaysMediumSand EARTHSYSTEMSSOUTHWEST FileNo.: PIDͲ000166Ͳ001 JobName: LivingDesertPhase1Entry LabNumber:16Ͳ045 AMOUNTPASSINGNO.200SIEVE ASTMD1140 Fines USCS Sample Depth Content Group Location (feet) (%) Symbol B2 7.5 6 SWͲSM B2 20 7 SPͲSM B2 30 8 SWͲSM B6 15 5 SWͲSM B6 30 9 SPͲSM March30,2016 EARTHSYSTEMSSOUTHWEST FileNo.:PIDͲ000166Ͳ001 LabNo.:16Ͳ045 CONSOLIDATIONTEST ASTMD2435&D5333 LivingDesertPhase1Entry InitialDryDensity:107.6pcf BͲ1@5feet InitialMoisture,%:0.6% SpecificGravity(assumed): 2.67 InitialVoidRatio:0.551 RingSample Hydrocollapse:1.3%@2.0ksf March30,2016 WellGradedSandw/Silt(SWͲSM)                  3HUFHQW&KDQJHLQ+HLJKWVertical Effective Stress, ksf % Change in Height vs Normal Presssure Diagram %HIRUH6DWXUDWLRQ +\GURFROODSVH $IWHU6DWXUDWLRQ 5HERXQG 3RO\ $IWHU6DWXUDWLRQ EARTHSYSTEMSSOUTHWEST FileNo.:PIDͲ000166Ͳ001 LabNo.:16Ͳ045 CONSOLIDATIONTEST ASTMD2435&D5333 LivingDesertPhase1Entry InitialDryDensity:104.0pcf BͲ2@2.5feet InitialMoisture,%:1.6% SpecificGravity(assumed): 2.67 InitialVoidRatio:0.603 RingSample Hydrocollapse:1.8%@2.0ksf March30,2016 WellGradedSandw/Silt(SWͲSM)                  3HUFHQW&KDQJHLQ+HLJKWVertical Effective Stress, ksf % Change in Height vs Normal Presssure Diagram %HIRUH6DWXUDWLRQ +\GURFROODSVH $IWHU6DWXUDWLRQ 5HERXQG 3RO\ $IWHU6DWXUDWLRQ EARTHSYSTEMSSOUTHWEST FileNo.:PIDͲ000166Ͳ001 LabNo.:16Ͳ045 CONSOLIDATIONTEST ASTMD2435&D5333 LivingDesertPhase1Entry InitialDryDensity:99.4pcf BͲ4@5feet InitialMoisture,%:2.9% SpecificGravity(assumed): 2.67 InitialVoidRatio:0.678 RingSample Hydrocollapse:1.7%@2.0ksf March30,2016 PoorlyGradedSand(SP)                  3HUFHQW&KDQJHLQ+HLJKWVertical Effective Stress, ksf % Change in Height vs Normal Presssure Diagram %HIRUH6DWXUDWLRQ +\GURFROODSVH $IWHU6DWXUDWLRQ 5HERXQG 3RO\ $IWHU6DWXUDWLRQ EARTHSYSTEMSSOUTHWEST FileNo.:PIDͲ000166Ͳ001 LabNo.:16Ͳ045 CONSOLIDATIONTEST ASTMD2435&D5333 LivingDesertPhase1Entry InitialDryDensity:104.5pcf BͲ6@2.5feet InitialMoisture,%:1.2% SpecificGravity(assumed): 2.67 InitialVoidRatio:0.594 RingSample Hydrocollapse:0.4%@2.0ksf March30,2016 PoorlyGradedSandw/Silt(SPͲSM)                  3HUFHQW&KDQJHLQ+HLJKWVertical Effective Stress, ksf % Change in Height vs Normal Presssure Diagram %HIRUH6DWXUDWLRQ +\GURFROODSVH $IWHU6DWXUDWLRQ 5HERXQG 3RO\ $IWHU6DWXUDWLRQ EARTHSYSTEMSSOUTHWEST FileNo.:PIDͲ000166Ͳ001 LabNo.:16Ͳ045 MAXIMUMDRYDENSITY/OPTIMUMMOISTURE ASTMD1557(Modified) JobName: LivingDesertPhase1Entry ProcedureUsed:A SampleID: 1 PreparationMethod:Moist Location: B1@0Ͳ5feet RammerType:Mechanical Description:LabNumber: 16Ͳ045 SieveSize %Retained(Cumulative) MaximumDryDensity: 130.3pcf 3/4" 1.6 OptimumMoisture: 5.9%3/8" 6.9 CorrectedforOversize(ASTMD4718) #4 17.0 March30,2016 WellGradedSandw/Silt&Gravel (SWͲSM)                 'U\'HQVLW\SFI0RLVWXUH&RQWHQWSHUFHQW  =HUR$LU9RLGV/LQHV VJ  EARTHSYSTEMSSOUTHWEST FileNo.:PIDͲ000166Ͳ001 3/30/2016 LabNo.:16Ͳ045 SOILCHEMICALANALYSES JobName: LivingDesertPhase1Entry JobNo.: PIDͲ000166Ͳ001 SampleID: B3 SampleDepth,feet: 0Ͳ5DFRL Sulfate,mg/Kg(ppm):10 10 5.00 (ASTMD4327) Chloride,mg/Kg(ppm):2 10 1.00 (ASTMD4327) pH,(pHUnits):9.41 1 ͲͲͲ (ASTMD1293) Resistivity,(ohmͲcm):11,025 ͲͲͲ ͲͲͲ Conductivity,(mmhosͲcm):91 12.00 (ASTMD1125) Note:TestsperformedbySubcontractLaboratory: TruesdailLaboratories,Inc. DF:DilutionFactor 14201FranklinAvenue RL:ReportingLimit Tustin,California92780Ͳ7008Tel:(714)730Ͳ6462 N.D.:NotDetectable GeneralGuidelinesforSoilCorrosivity Soluble 0Ͳ1,000 mg/Kg(ppm) [0Ͳ.1%]Low Sulfates1 1,000Ͳ2,000 mg/Kg(ppm) [0.1Ͳ0.2%]Moderate 2,000Ͳ20,000 mg/Kg(ppm) [0.2Ͳ2.0%]Severe >20,000 mg/Kg(ppm) [>2.0%]VerySevere Resistivity2 0Ͳ900 ohmͲcm VerySeverelyCorrosive 900to2,300 ohmͲcm SeverelyCorrosive 2,300to5,000 ohmͲcm ModeratelyCorrosive 5,000Ͳ10,000 ohmͲcm MildlyCorrosive 10,000+ ohmͲcm ProgressivelyLessCorrosive ChemicalAgent AmountinSoil DegreeofCorrosivity 1ͲGeneralcorrosivitytoconcreteelements.AmericanConcreteInstitute(ACI)WaterSolubleSulfatein SoilbyWeight,ACI318,Tables4.2.2ͲExposureConditionsandTable4.3.1ͲRequirementsforConcrete ExposedtoSulfateͲContainingSolutions.Itisrecommendedthatconcretebeproportionedinaccordance withtherequirementsofthetwoACItableslistedabove(4.2.2and4.3.1).ThecurrentACIshouldbe referredtoforfurtherinformation. 2ͲGeneralcorrosivitytometallicelements(iron,steel,etc.).Althoughnostandardhasbeendeveloped andacceptedbycorrosionengineeringorganizations,itisgenerallyagreedthattheclassificationshown above,orothersimilarclassifications,reflectsoilcorrosivity.Source:Corrosionsource.com.The classificationpresentedisexcerptedfromASTMSTP1013titled“EffectsofSoilCharacteristicson Corrosion”(February,1989) EARTHSYSTEMSSOUTHWEST ',5(&76+($5'$7$ 6DPSOH/RFDWLRQ %DWIHHW 0DWHULDO 3RRUO\*UDGHG6DQG 63 'U\'HQVLW\ SFI   ,QLWLDO )LQDO 0RLVWXUH&RQWHQW     6DWXUDWLRQ     3HDN 8OWLPDWH I$QJOHRI)ULFWLRQ GHJUHHV   F&RKHVLYH6WUHQJWK SVI    7HVW7\SH 3HDNDQG8OLWLPDWH 6KHDU5DWH LQPLQ   7HVW0HWKRG$670' /LYLQJ'HVHUW3KDVH(QWU\ 3DOP'HVHUW&DOLIRUQLD  3,' ',5(&76+($57(67 0 500 1000 1500 2000 2500 3000 3500 4000 4500 0 500 1000 1500 2000 2500 3000 3500 4000 45006KHDULQJ6WUHVV SVI 1RUPDO/RDG SVI PEAK ULTIMATE 0 500 1000 1500 2000 2500 3000 3500 4000 4500 0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.506KHDULQJ6WUHVV SVI +RUL]RQWDO'LVSODFHPHQW LQ 1000 psf 2000 psf 4000 psf Earth Systems Southwest 3,' -2%1$0(/LYLQJ'HVHUW3KDVH(QWU\ 6$03/(,'%RULQJ%# 62,/'(6&5,37,216DQGZLWK6LOWDQG*UDYHO 6360  63(&,0(1180%(5 $%& (;8'$7,2135(6685(   5(6,67$1&(9$/8(   (;3$16,21',$/   (;3$16,2135(6685( 36)    02,6785($77(67    '5<'(16,7<$77(67    59$/8(#36,(;8'$7,21  59$/8(E\([SDQVLRQ3UHVVXUH  *Based on a Traffic Index of 5.0 and a Gravel Factor of 1.70 0DUFK       59DOXH([XGDWLRQ3UHVVXUH (;8'$7,2135(6685(&+$57          &RYHU7KLFNQHVVE\6WDELORPHWHU )W &RYHU7KLFNQHVVE\([SDQVLRQ3UHVVXUH )W (;3$16,2135(6685(&+$57 (DUWK6\VWHPV6RXWKZHVW Whitewater River Region Final WQMP The Living Desert– Phase 2.5 Appendix F Structural BMP and/or Retention Facility Sizing Calculations and Design Details Date Enter the Area Tributary to this Feature (ATRIB)ATRIB =8.79 acres AIMP =1.43 acres If =0.16 Use the following equation based on the WEF/ASCE Method CBMP = 0.858If 3 - 0.78If 2 + 0.774If + 0.04 CBMP = 0.15 Vu = 0.06 VBMP (ft3)= VBMP =1,914 ft 3 (in*ac)/ac Notes: Calculate the composite Runoff Coefficient, C for the BMP Tributary Area 12 (in/ft) Calculate VU, the 80% Unit Storage Volume VU= 0.40 x CBMP VU (in-ac/ac) x AT (ac) x 43,560 (ft2/ac) Determine the Impervious Area Ratio Company Project Number/Name Calculate Impervious Area Ratio (If) If = AIMP/ATRIB Determine the Impervious Area within ATRIB (AIMP) Whitewater Watershed BMP Design Volume, VBMP (Rev. 06-2014) Legend: Determine Design Storage Volume, VBMP Calculate the design storage volume of the BMP, VBMP. 5/10/2022 Required Entries Calculated Cells The Living Desert - Phase 2.5 Drainage Area A Designed by RRR Company Name MSA Consulting, Inc. County/City Case No Drainage Area Number/Name Date Enter the Area Tributary to this Feature (ATRIB)ATRIB =1.64 acres AIMP =0.44 acres If =0.27 Use the following equation based on the WEF/ASCE Method CBMP = 0.858If 3 - 0.78If 2 + 0.774If + 0.04 CBMP = 0.21 Vu = 0.08 VBMP (ft3)= VBMP =476 ft 3 (in*ac)/ac Notes: Calculate the composite Runoff Coefficient, C for the BMP Tributary Area 12 (in/ft) Calculate VU, the 80% Unit Storage Volume VU= 0.40 x CBMP VU (in-ac/ac) x AT (ac) x 43,560 (ft2/ac) Determine the Impervious Area Ratio Company Project Number/Name Calculate Impervious Area Ratio (If) If = AIMP/ATRIB Determine the Impervious Area within ATRIB (AIMP) Whitewater Watershed BMP Design Volume, VBMP (Rev. 06-2014) Legend: Determine Design Storage Volume, VBMP Calculate the design storage volume of the BMP, VBMP. 5/10/2022 Required Entries Calculated Cells The Living Desert - Phase 2.5 Drainage Area B Designed by RRR Company Name MSA Consulting, Inc. County/City Case No Drainage Area Number/Name Date Enter the Area Tributary to this Feature (ATRIB)ATRIB =1.31 acres AIMP =0.64 acres If =0.49 Use the following equation based on the WEF/ASCE Method CBMP = 0.858If 3 - 0.78If 2 + 0.774If + 0.04 CBMP = 0.33 Vu = 0.13 VBMP (ft3)= VBMP =618 ft 3 (in*ac)/ac Notes: Calculate the composite Runoff Coefficient, C for the BMP Tributary Area 12 (in/ft) Calculate VU, the 80% Unit Storage Volume VU= 0.40 x CBMP VU (in-ac/ac) x AT (ac) x 43,560 (ft2/ac) Determine the Impervious Area Ratio Company Project Number/Name Calculate Impervious Area Ratio (If) If = AIMP/ATRIB Determine the Impervious Area within ATRIB (AIMP) Whitewater Watershed BMP Design Volume, VBMP (Rev. 06-2014) Legend: Determine Design Storage Volume, VBMP Calculate the design storage volume of the BMP, VBMP. 5/10/2022 Required Entries Calculated Cells The Living Desert - Phase 2.5 Drainage Area C Designed by RRR Company Name MSA Consulting, Inc. County/City Case No Drainage Area Number/Name For Property Located in Those Portions of Section 32, T5S., R6E., SBM In the City of Palm Desert, California The Living Desert Crossroads of Conservation Phase 2.5 May 10, 2022 Prepared for: The Living Desert 47900 Portola Avenue Palm Desert, CA 92260 JN: 2244 FINAL HYDROLOGY REPORT THE LIVING DESERT – PHASE 2.5 FINAL HYDROLOGY REPORT TABLE OF CONTENTS EXECUTIVE SUMMARY ................................................................................................ 1 PROJECT LOCATION .................................................................................................... 1 EXISTING SITE CONDITIONS ........................................................................................ 1 Flood Rate Map ..................................................................................................................1 PROPOSED FLOOD CONTROL REQUIREMENTS ............................................................ 1 HYDROLOGY ANALYSIS DESIGN CRITERIA .................................................................... 1 National Cooperative Soil Survey ........................................................................................2 Antecedent Moisture Condition ...........................................................................................2 Land Use Classifications and Runoff Index Numbers .............................................................2 Precipitation Frequency Estimates .......................................................................................2 SYNTHETIC UNIT HYDROGRAPH (SHORTCUT METHOD) ANALYSES .............................. 2 RESULTS AND CONCLUSIONS ...................................................................................... 3 LIST OF APPENDICES A. RIVERSIDE COUNTY TLMA VICINITY MAP B. NFIP FLOOD INSURANCE RATE MAP C. USDA NCSS HYDROLOGIC SOILS MAP D. NOAA ATLAS 14 & RCFCD REFERENCE PLATES E. RCFC&WCD SYNTHETIC UNIT HYDROGRAPH WORKSHEETS F. RETENTION CHAMBER STORAGE CALCULATIONS G. WQMP VOLUME WORKSHEETS H. EXISTING CONDITIONS EXHIBIT I. HYDROLOGY EXHIBIT THE LIVING DESERT – PHASE 2.5 FINAL HYDROLOGY REPORT 1 EXECUTIVE SUMMARY The proposed project at The Living Desert in the City of Palm Desert consists of an expansion of the current parking area toward the south and the development of a new Facilities Building and a new Storage Building. On-site storm runoff will be conveyed through sheet flows, curb gutters, and storm drain lines to underground retention facilities designed to retain the incremental increase in stormwater volume resulting from the new development, with subsequent runoff following existing drainage routes. PROJECT LOCATION The proposed project site is located primarily along the south boundary of The Living Desert in Sections 32, Township 5 South, Range 6 East, San Bernardino Base and Meridian. A vicinity map obtained from the Riverside TLMA website is included as Appendix A. EXISTING SITE CONDITIONS The subject area consists of previously developed land with various buildings and structures. Mounding on the perimeter of the surrounding areas of The Living Desert prevents offsite flows from entering the project area. The existing parking lot uses a combination of permeable pavers and storm drain catch basins to percolate storm flows into the ground or convey them to the existing 66” storm drain line running underneath the project site. On-site flows within the project site typically flow south to north and generally occur as sheet flow. Refer to Appendix H for the Existing Conditions Exhibit. Flood Rate Map The proposed (to be developed) area is covered by FIRM Panel Number 06065C2228G, revised May 2, 2013, by LOMR 12-09-314P-060254 which indicates the project area lies within Zone X (Shaded), which is defined as “Areas of 0.2% annual chance flood; areas of 1% annual chance flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 1% annual chance flood. Insurance purchase is not required in these zones”. (Refer to the attached Flood Insurance Rate Map – Appendix B). PROPOSED FLOOD CONTROL REQUIREMENTS Drainage requirements for this project fall under the jurisdiction of the City of Palm Desert. Stormwater runoff will be conveyed through street gutters and swales to proposed inlets and subsequently to three proposed retention storage facilities. The retention facilities will be sized to retain the incremental increase in storm runoff volume, with further runoff being allowed to continue onto existing or proposed drainage routes. The expanded public parking area will be surfaced with permeable pavers to match the existing surface treatment. The existing permeable pavers appear to have been well maintained and have been observed over the years to perform well in eliminating the accumulation of stormwater runoff at the parking area’s low point at the northeast corner. No new storm drain facilities will be connected directly to the existing 66” storm drain line which runs north under the existing parking lot. HYDROLOGY ANALYSIS DESIGN CRITERIA Storm run-off volumes for the 100-year event were obtained utilizing the Synthetic Unit (Shortcut Method) Hydrograph, as described in the RCFC&WCD Hydrology Manual. The shortcut method is useful for evaluating those areas less than 200 acres in size. The hydrologic data used for the calculations are as follows: THE LIVING DESERT – PHASE 2.5 FINAL HYDROLOGY REPORT 2 National Cooperative Soil Survey The existing soil is categorized as “not rated” as shown on the attached National Cooperative Soil Survey exhibits in Appendix C. Per the Earth Systems Southwest Geotechnical Engineering and Percolation Report, File No. PID- 000166-001, Doc. No. 16-03-714, dated March 30, 2016, site “alluvial soils consist generally of well and poorly graded sands with varying amounts of silt and gravel (Universal Soils Classification System symbols of SP and SW, SP-SM, and SW-SM).” This description matches Soil Group A, defined by RCFCD as – “those soils having high infiltration rates. These soils consist mainly of deep, well drained to excessively drained sands or gravely sands. These soils have a high rate of water transmission.” Antecedent Moisture Condition AMC II – Moderate runoff potential, an intermediate condition. Per RCFC&WCD Hydrology Manual (Dated: April, 1978): “For the purposes of design hydrology using District methods, AMC II should normally be assumed for both the 10 year and 100 year frequency storm”. Land Use Classifications and Runoff Index Numbers Runoff Index Numbers were obtained from RCFCD Plate D-5.5 and are summarized below: Existing Conditions – Open Brush Poor 62 Proposed Conditions – Paving/Hardscape 32 Percent of Impervious Cover (RCFCD Plate E-6.3): Existing Open Brush Poor 5% Buildings/Paving/Hardscape 100% Low Loss Rates: 85% Precipitation Frequency Estimates Precipitation depths were obtained from NOAA Atlas 14: 100 Year – 1 Hour Precipitation: 1.98 inches 100 Year – 3 Hour Precipitation: 2.59 inches 100 Year - 6 Hour Precipitation 3.16 inches 100 Year – 24 Hour Precipitation 4.88 inches See Appendix D for the NOAA Atlas 14 Point Precipitation Frequency Estimates and respective RCFCD Plates. SYNTHETIC UNIT HYDROGRAPH (SHORTCUT METHOD) ANALYSES The tributary areas are considerably less than the 200-acre limit guideline for utilization of the shortcut method. It should be noted that the peak flow for the 1-hour storm is not necessarily representative for peak flow. Per RCFC&WCD, peak discharges from the 3-hour storm should normally compare well with rational peaks. Analyses performed include comparative flood volume calculations for the existing and proposed conditions based on the RCFC&WCD Synthetic Unit Hydrograph (Shortcut Method). The differentials of the results provide the anticipated worst-case incremental increase flood volume from the 100-year storm event. The synthetic unit hydrograph worksheets are included in Appendix E and the Hydrology Exhibit is included in Appendix J, with results summarized below: THE LIVING DESERT – PHASE 2.5 FINAL HYDROLOGY REPORT 3 Drainage Area A STORM EVENT SUMMARY – DEVELOPED CONDITION Duration 1-HOUR 3-HOUR 6-HOUR 24-HOUR Effective Rain (in) 0.05 0.08 0.06 0.03 Flood Volume (cu-ft) (Incremental Increase) (acre-ft) 1,436 0.03 2,513 0.06 1,954 0.04 834 0.02 Peak Flow (cfs) 0.40 0.40 0.40 0.34 Drainage Area B STORM EVENT SUMMARY – DEVELOPED CONDITION Duration 1-HOUR 3-HOUR 6-HOUR 24-HOUR Effective Rain (in) 0.11 0.16 0.16 0.10 Flood Volume (cu-ft) (Incremental Increase) (acre-ft) 675 0.02 973 0.02 981 0.02 569 0.01 Peak Flow (cfs) 0.19 0.19 0.19 0.16 Drainage Area C STORM EVENT SUMMARY – DEVELOPED CONDITION Duration 1-HOUR 3-HOUR 6-HOUR 24-HOUR Effective Rain (in) 0.25 0.47 0.44 0.42 Flood Volume (cu-ft) (Incremental Increase) (acre-ft) 1,175 0.03 2,215 0.05 2,092 0.05 1,995 0.05 Peak Flow (cfs) 0.33 0.33 0.33 0.28 RESULTS AND CONCLUSIONS As demonstrated by the above narrative and appendices, the on-site storm water runoff from the 100-year storm event will be conveyed to the retention facilities, which have sufficient capacity to retain the incremental increase of flood volume from the 100-year storm. It is therefore concluded that this project conforms to the hydrologic requirements set forth by the City of Palm Desert. THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix A Riverside County TLMA Vicinity Map *IMPORTANT* Maps and data are to be used for reference purposes only. Map features are approximate, and are not necessarily accurate to surveying or engineering standards. The County of Riverside makes no warranty or guarantee as to the content (the source is often third party), accuracy, timeliness, or completeness of any of the data provided, and assumes no legal responsibility for the information contained on this map. Any use of this product with respect to accuracy and precision shall be the sole responsibility of the user.© Riverside County RCIT GIS3,778 FeetLegendVicinity MapNotes1,8890REPORT PRINTED ON...8/26/2016 3:31:04 PMDisplay ParcelsCity BoundariesCitiesroadsannohighwaysHWYINTERCHANGEINTERSTATEOFFRAMPONRAMPUSHWYcountiescitieshydrographylineswaterbodiesLakesRivers THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix B NFIP Flood Insurance Rate Map DEFINITIONS OF FEMA FLOOD ZONE DESIGNATIONS Moderate to Low Risk Areas In communities that participate in the NFIP, flood insurance is available to all property owners and renters in these zones: ZONE DESCRIPTION X (Shaded) Areas of 0.2% annual chance flood; areas of 1% annual chance flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 1% annual chance flood. Insurance purchase is not required in these zones. X Areas determined to be outside the 0.2% annual chance floodplain. High Risk Areas In communities that participate in the NFIP, mandatory flood insurance purchase requirements apply to all of these zones: ZONE DESCRIPTION A Areas with a 1% annual chance of flooding and a 26% chance of flooding over the life of a 30-year mortgage. Because detailed analyses are not performed for such areas; no depths or base flood elevations are shown within these zones. AE Areas with a 1% annual chance of flooding and a 26% chance of flooding over the life of a 30-year mortgage. In most instances, base flood elevations derived from detailed analyses are shown at selected intervals within these zones. AH Areas with a 1% annual chance of shallow flooding, usually in the form of a pond, with an average depth ranging from 1 to 3 feet. These areas have a 26% chance of flooding over the life of a 30-year mortgage. Base flood elevations derived from detailed analyses are shown at selected intervals within these zones. AO River or stream flood hazard areas, and areas with a 1% or greater chance of shallow flooding each year, usually in the form of sheet flow, with an average depth ranging from 1 to 3 feet. These areas have a 26% chance of flooding over the life of a 30-year mortgage. Average flood depths derived from detailed analyses are shown within these zones. For areas of alluvial fan flooding, velocities are also determined. AR Areas with a temporarily increased flood risk due to the building or restoration of a flood control system (such as a levee or a dam). Mandatory flood insurance purchase requirements will apply, but rates will not exceed the rates for unnumbered A zones if the structure is built or restored in compliance with Zone AR floodplain management regulations. A99 Areas with a 1% annual chance of flooding that will be protected by a Federal flood control system where construction has reached specified legal requirements. No depths or base flood elevations are shown within these zones. X (Shaded) Areas of 0.2% annual chance flood; areas of 1% annual chance flood with average depths of less than 1 foot or with drainage areas less thangp g 1 square mile; and areas protected by levees from 1% annual chance q; p y flood. Insurance purchase is not required in these zones. High Risk – Coastal Areas In communities that participate in the NFIP, mandatory flood insurance purchase requirements apply to all of these zones: ZONE DESCRIPTION V Coastal areas with a 1% or greater chance of flooding and an additional hazard associated with storm waves. These areas have a 26% chance of flooding over the life of a 30-year mortgage. No base flood elevations are shown within these zones. VE Coastal areas with a 1% or greater chance of flooding and an additional hazard associated with storm waves. These areas have a 26% chance of flooding over the life of a 30-year mortgage. Base flood elevations derived from detailed analyses are shown at selected intervals within these zones. Undetermined Risk Areas ZONE DESCRIPTION D Areas with possible but undetermined flood hazards. No flood hazard analysis has been conducted. Flood insurance rates are commensurate with the uncertainty of the flood risk. 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PHASE 2.5 FINAL HYDROLOGY REPORT Appendix D NOAA Atlas 14 RCFCD Reference Plates NOAA Atlas 14, Volume 6, Version 2 Location name: Indian Wells, California, US* Latitude: 33.6992°, Longitude: -116.3739° Elevation: 382 ft* * source: Google Maps POINT PRECIPITATION FREQUENCY ESTIMATES Sanja Perica, Sarah Dietz, Sarah Heim, Lillian Hiner, Kazungu Maitaria, Deborah Martin, Sandra Pavlovic, Ishani Roy, Carl Trypaluk, Dale Unruh, Fenglin Yan, Michael Yekta, Tan Zhao, Geoffrey Bonnin, Daniel Brewer, Li-Chuan Chen, Tye Parzybok, John Yarchoan NOAA, National Weather Service, Silver Spring, Maryland PF_tabular | PF_graphical | Maps_&_aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1 Duration Average recurrence interval (years) 1 2 5 10 25 50 100 200 500 1000 5-min 0.075 (0.063-0.091) 0.115 (0.096-0.140) 0.178 (0.148-0.216) 0.238 (0.196-0.291) 0.335 (0.267-0.425) 0.424 (0.331-0.550) 0.530 (0.403-0.704) 0.657 (0.485-0.898) 0.864 (0.611-1.23) 1.06 (0.724-1.57) 10-min 0.108 (0.090-0.131) 0.165 (0.138-0.200) 0.255 (0.212-0.310) 0.341 (0.281-0.417) 0.480 (0.382-0.609) 0.608 (0.474-0.788) 0.760 (0.578-1.01) 0.941 (0.696-1.29) 1.24 (0.876-1.77) 1.52 (1.04-2.24) 15-min 0.131 (0.109-0.158) 0.200 (0.167-0.242) 0.308 (0.256-0.374) 0.412 (0.340-0.505) 0.581 (0.463-0.736) 0.735 (0.573-0.953) 0.919 (0.699-1.22) 1.14 (0.841-1.56) 1.50 (1.06-2.14) 1.84 (1.25-2.71) 30-min 0.196 (0.164-0.238) 0.300 (0.250-0.364) 0.463 (0.385-0.563) 0.619 (0.511-0.759) 0.873 (0.696-1.11) 1.11 (0.862-1.43) 1.38 (1.05-1.84) 1.71 (1.27-2.34) 2.25 (1.59-3.21) 2.76 (1.89-4.08) 60-min 0.281 (0.234-0.340) 0.429 (0.358-0.520) 0.662 (0.551-0.805) 0.885 (0.730-1.09) 1.25 (0.994-1.58) 1.58 (1.23-2.05) 1.98 (1.50-2.62) 2.45 (1.81-3.35) 3.22 (2.28-4.59) 3.95 (2.70-5.83) 2-hr 0.388 (0.324-0.469) 0.569 (0.475-0.689) 0.848 (0.705-1.03) 1.11 (0.915-1.36) 1.53 (1.22-1.93) 1.90 (1.48-2.46) 2.33 (1.77-3.10) 2.84 (2.10-3.88) 3.64 (2.58-5.20) 4.38 (2.99-6.47) 3-hr 0.458 (0.383-0.554) 0.664 (0.553-0.804) 0.976 (0.811-1.19) 1.27 (1.04-1.55) 1.72 (1.37-2.18) 2.13 (1.66-2.76) 2.59 (1.97-3.44) 3.13 (2.31-4.28) 3.98 (2.82-5.67) 4.74 (3.24-7.00) 6-hr 0.592 (0.495-0.717) 0.852 (0.710-1.03) 1.24 (1.03-1.51) 1.59 (1.31-1.95) 2.14 (1.71-2.71) 2.62 (2.04-3.39) 3.16 (2.40-4.20) 3.78 (2.79-5.17) 4.73 (3.35-6.75) 5.57 (3.80-8.23) 12-hr 0.722 (0.603-0.873) 1.06 (0.882-1.28) 1.55 (1.29-1.89) 2.00 (1.64-2.44) 2.67 (2.13-3.38) 3.24 (2.53-4.20) 3.89 (2.96-5.16) 4.61 (3.41-6.31) 5.71 (4.04-8.14) 6.65 (4.54-9.83) 24-hr 0.875 (0.774-1.01) 1.32 (1.16-1.52) 1.95 (1.72-2.26) 2.52 (2.20-2.94) 3.37 (2.85-4.06) 4.09 (3.39-5.02) 4.88 (3.96-6.14) 5.76 (4.55-7.45) 7.08 (5.37-9.53) 8.21 (6.02-11.4) 2-day 1.01 (0.889-1.16) 1.53 (1.36-1.77) 2.30 (2.03-2.66) 2.98 (2.61-3.48) 4.00 (3.39-4.82) 4.86 (4.04-5.97) 5.81 (4.71-7.31) 6.87 (5.43-8.88) 8.46 (6.42-11.4) 9.81 (7.20-13.6) 3-day 1.08 (0.952-1.24) 1.65 (1.46-1.91) 2.49 (2.20-2.89) 3.24 (2.83-3.78) 4.36 (3.69-5.25) 5.31 (4.41-6.52) 6.36 (5.15-8.00) 7.53 (5.95-9.73) 9.29 (7.05-12.5) 10.8 (7.92-15.0) 4-day 1.15 (1.01-1.32) 1.76 (1.56-2.03) 2.66 (2.35-3.08) 3.46 (3.03-4.04) 4.66 (3.95-5.61) 5.68 (4.72-6.98) 6.81 (5.52-8.56) 8.07 (6.37-10.4) 9.96 (7.56-13.4) 11.6 (8.50-16.1) 7-day 1.22 (1.08-1.41) 1.88 (1.66-2.17) 2.84 (2.50-3.28) 3.69 (3.23-4.30) 4.97 (4.21-5.98) 6.05 (5.02-7.44) 7.25 (5.88-9.12) 8.58 (6.78-11.1) 10.6 (8.02-14.2) 12.3 (9.01-17.1) 10-day 1.26 (1.11-1.45) 1.94 (1.71-2.23) 2.93 (2.58-3.39) 3.81 (3.33-4.45) 5.14 (4.35-6.19) 6.26 (5.20-7.69) 7.49 (6.07-9.42) 8.86 (6.99-11.5) 10.9 (8.27-14.7) 12.6 (9.28-17.6) 20-day 1.36 (1.21-1.57) 2.13 (1.88-2.46) 3.26 (2.87-3.77) 4.26 (3.72-4.97) 5.75 (4.87-6.93) 7.01 (5.82-8.62) 8.38 (6.80-10.5) 9.91 (7.82-12.8) 12.1 (9.21-16.3) 14.0 (10.3-19.5) 30-day 1.49 (1.32-1.72) 2.36 (2.08-2.72) 3.64 (3.20-4.21) 4.77 (4.17-5.57) 6.47 (5.48-7.79) 7.89 (6.55-9.69) 9.42 (7.64-11.9) 11.1 (8.77-14.4) 13.6 (10.3-18.3) 15.6 (11.5-21.7) 45-day 1.61 (1.42-1.86) 2.60 (2.30-3.00) 4.04 (3.56-4.68) 5.33 (4.66-6.22) 7.25 (6.14-8.73) 8.86 (7.35-10.9) 10.6 (8.58-13.3) 12.5 (9.84-16.1) 15.2 (11.5-20.4) 17.4 (12.8-24.2) 60-day 1.72 (1.52-1.99) 2.82 (2.49-3.26) 4.43 (3.91-5.13) 5.87 (5.13-6.84) 7.99 (6.77-9.63) 9.77 (8.11-12.0) 11.7 (9.47-14.7) 13.7 (10.8-17.8) 16.7 (12.7-22.5) 19.1 (14.0-26.6) 1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Back to Top PF graphical Page 1 of 4Precipitation Frequency Data Server 8/26/2016http://dipper.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=33.6992&lon=-116.3739&d... 1.98 2.59 3.16 4.88 Back to Top Maps & aerials Small scale terrain Map data ©2016 Google, INEGIReport a map error50 km¦ Page 2 of 4Precipitation Frequency Data Server 8/26/2016http://dipper.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=33.6992&lon=-116.3739&d... Large scale terrain Large scale map Large scale aerial Back to Top US Department of Commerce National Oceanic and Atmospheric Administration National Weather Service National Water Center 1325 East West Highway Silver Spring, MD 20910 Map data ©2016 GoogleReport a map error2 km¦ Map data ©2016 GoogleReport a map error2 km¦ Imagery ©2016 TerraMetricsReport a map error2 km¦ Page 3 of 4Precipitation Frequency Data Server 8/26/2016http://dipper.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=33.6992&lon=-116.3739&d... Questions?: HDSC.Questions@noaa.gov Disclaimer Page 4 of 4Precipitation Frequency Data Server 8/26/2016http://dipper.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=33.6992&lon=-116.3739&d... 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'HYHORSHG+U6WRUP 3DJHRI THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix F Retention Chamber Storage Calculations Call StormTech at 860.529.8188 or 888.892.2694 or visit our website at www.stormtech.com for technical and product information.4 StormTech MC-4500 Chamber MC-4500 ChamberDesigned to meet the most stringent industry performance standards for superior structural integrity while providing designers with a cost-effective method to save valuable land and protect water resources. The StormTech system is designed primarily to be used under parking lots, thus maximizing land usage for commercial and municipal applications. StormTech MC-4500 Chamber (not to scale) 1RPLQDO&KDPEHU6SHFLÛFDWLRQV Size (L x W x H) 52” (1321 mm) x 100” (2540 mm) x 60” (1524 mm) Chamber Storage 106.5 ft 3 (3.01 m3) Min. Installed Storage* 162.6 ft3 (4.60 m3) Weight 120 lbs (54.4 kg) * This assumes a minimum of 12” (300 mm) of stone above, 9” (230 mm) of stone below chambers, 9” (230 )mm between chambers/end caps and 40% stone porosity. Shipping 7 chambers/pallet 11 pallets/truck StormTech MC-4500 End Cap (not to scale) 1RPLQDO&KDPEHU6SHFLÛFDWLRQV Size (L x W x H) 35.1” (891 mm) x 90.2” (2291 mm) x 59.4” (1509 mm) Chamber Storage 35.7 ft3 (1.01 m3) Min. Installed Storage* 108.7 ft3 (3.08 m3) Weight 120 lbs (54.4 kg) * This assumes a minimum of 12” (300 mm) of stone above, 9” (230 mm) of stone below, 6” (150 mm) of stone perimeter, 9” (230 mm) between chambers/end caps and 40% stone porosity. RETENTION STORAGE CALCULATIONS DRAINAGE AREA A REQUIRED VOLUME = 2,513 CF Retention storage facility used: ADS StormTech MC-4500 Per StormTech specifications: Chamber section storage capacity: 106.5 ft3 per section End cap storage capacity: 35.7 ft3 per end cap 12 chamber sections used: Total chamber storage capacity = (12 × 106.5 ft 3) + (2 × 35.7 ft3) = 1,349 ft 3 Chamber height = 60” ÷ 12 in/ft = 5 ft Chamber width = 100” ÷ 12 in/ft = 8.33 ft Chamber overall length = (12 × 48.3 in ÷ 12 in/ft) + (2 × 30.7 in ÷ 12 in/ft) = 53.42 ft Stone envelope around chambers extends 2 feet below chamber bottom and 1 foot around all other sides and is assumed to have 40% voids: Stone envelope volume = 55.42 ft × 10.33 ft × 8 ft = 4,580 ft 3 Stone envelope storage capacity = (4,580 ft 2 – 1,349 ft 2)× 40% = 1,292 ft 3 Total retention storage volume provided = 1,349 ft 3 + 1,292 ft 3 =2,641 ft 3 RETENTION STORAGE CALCULATIONS DRAINAGE AREA B REQUIRED VOLUME = 981 CF Retention storage facility used: ADS StormTech MC-4500 Per StormTech specifications: Chamber section storage capacity: 106.5 ft3 per section End cap storage capacity: 35.7 ft3 per end cap 4 chamber sections used: Total chamber storage capacity = (4 × 106.5 ft 3) + (2 × 35.7 ft3) = 497 ft 3 Chamber height = 60” ÷ 12 in/ft = 5 ft Chamber width = 100” ÷ 12 in/ft = 8.33 ft Chamber overall length = (4 × 48.3 in ÷ 12 in/ft) + (2 × 30.7 in ÷ 12 in/ft) = 21.22 ft Stone envelope around chambers extends 2 feet below chamber bottom and 1 foot around all other sides and is assumed to have 40% voids: Stone envelope volume = 21.22 ft × 10.33 ft × 8 ft = 1,754 ft 3 Stone envelope storage capacity = (1,754 ft 2 –497ft2)× 40% = 503 ft 3 Total retention storage volume provided = 497 ft 3 + 503 ft 3 =1,000 ft 3 RETENTION STORAGE CALCULATIONS DRAINAGE AREA C REQUIRED VOLUME = 2,215 CF Retention storage facility used: ADS StormTech MC-4500 Per StormTech specifications: Chamber section storage capacity: 106.5 ft3 per section End cap storage capacity: 35.7 ft3 per end cap 9 total chamber sections used, configured a linked 5-unit and 4-unit chambers: 4-unit chamber capacity, as calculated for Drainage Area B above: 1,000 ft3 5-unit total chamber storage capacity = (5 × 106.5 ft 3) + (2 × 35.7 ft3) = 604 ft 3 Chamber height = 60” ÷ 12 in/ft = 5 ft Chamber width = 100” ÷ 12 in/ft = 8.33 ft Chamber overall length = (5 × 48.3 in ÷ 12 in/ft) + (2 × 30.7 in ÷ 12 in/ft) = 25.24 ft Stone envelope around chambers extends 2 feet below chamber bottom and 1 foot around all other sides and is assumed to have 40% voids: Stone envelope volume = 27.24 ft × 10.33 ft × 8 ft = 2,251 ft 3 Stone envelope storage capacity = (2,251 ft 2 –604ft2)× 40% = 659 ft 3 5-unit chamber retention storage volume provided = 604 ft 3 + 659 ft 3 =1,263ft3 Total retention storage volume provided = 1,000 ft 3 + 1,263 ft 3 =2,263 ft 3 THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix G WQMP Volume Worksheets Date Enter the Area Tributary to this Feature (ATRIB)ATRIB =8.79 acres AIMP =1.43 acres If =0.16 Use the following equation based on the WEF/ASCE Method CBMP = 0.858If 3 - 0.78If 2 + 0.774If + 0.04 CBMP = 0.15 Vu = 0.06 VBMP (ft3)= VBMP =1,914 ft 3 (in*ac)/ac Notes: Calculate the composite Runoff Coefficient, C for the BMP Tributary Area 12 (in/ft) Calculate VU, the 80% Unit Storage Volume VU= 0.40 x CBMP VU (in-ac/ac) x AT (ac) x 43,560 (ft2/ac) Determine the Impervious Area Ratio Company Project Number/Name Calculate Impervious Area Ratio (If) If = AIMP/ATRIB Determine the Impervious Area within ATRIB (AIMP) Whitewater Watershed BMP Design Volume, VBMP (Rev. 06-2014) Legend: Determine Design Storage Volume, VBMP Calculate the design storage volume of the BMP, VBMP. 5/10/2022 Required Entries Calculated Cells The Living Desert - Phase 2.5 Drainage Area A Designed by RRR Company Name MSA Consulting, Inc. County/City Case No Drainage Area Number/Name Date Enter the Area Tributary to this Feature (ATRIB)ATRIB =1.64 acres AIMP =0.44 acres If =0.27 Use the following equation based on the WEF/ASCE Method CBMP = 0.858If 3 - 0.78If 2 + 0.774If + 0.04 CBMP = 0.21 Vu = 0.08 VBMP (ft3)= VBMP =476 ft 3 (in*ac)/ac Notes: Calculate the composite Runoff Coefficient, C for the BMP Tributary Area 12 (in/ft) Calculate VU, the 80% Unit Storage Volume VU= 0.40 x CBMP VU (in-ac/ac) x AT (ac) x 43,560 (ft2/ac) Determine the Impervious Area Ratio Company Project Number/Name Calculate Impervious Area Ratio (If) If = AIMP/ATRIB Determine the Impervious Area within ATRIB (AIMP) Whitewater Watershed BMP Design Volume, VBMP (Rev. 06-2014) Legend: Determine Design Storage Volume, VBMP Calculate the design storage volume of the BMP, VBMP. 5/10/2022 Required Entries Calculated Cells The Living Desert - Phase 2.5 Drainage Area B Designed by RRR Company Name MSA Consulting, Inc. County/City Case No Drainage Area Number/Name Date Enter the Area Tributary to this Feature (ATRIB)ATRIB =1.31 acres AIMP =0.64 acres If =0.49 Use the following equation based on the WEF/ASCE Method CBMP = 0.858If 3 - 0.78If 2 + 0.774If + 0.04 CBMP = 0.33 Vu = 0.13 VBMP (ft3)= VBMP =618 ft 3 (in*ac)/ac Notes: Calculate the composite Runoff Coefficient, C for the BMP Tributary Area 12 (in/ft) Calculate VU, the 80% Unit Storage Volume VU= 0.40 x CBMP VU (in-ac/ac) x AT (ac) x 43,560 (ft2/ac) Determine the Impervious Area Ratio Company Project Number/Name Calculate Impervious Area Ratio (If) If = AIMP/ATRIB Determine the Impervious Area within ATRIB (AIMP) Whitewater Watershed BMP Design Volume, VBMP (Rev. 06-2014) Legend: Determine Design Storage Volume, VBMP Calculate the design storage volume of the BMP, VBMP. 5/10/2022 Required Entries Calculated Cells The Living Desert - Phase 2.5 Drainage Area C Designed by RRR Company Name MSA Consulting, Inc. County/City Case No Drainage Area Number/Name THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix H Existing Conditions Exhibit THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix I Hydrology Exhibit Whitewater River Region Final WQMP The Living Desert– Phase 2.5 Appendix G AGREEMENTS –CC&RS,COVENANT AND AGREEMENTS,BMP MAINTENANCE AGREEMENTS AND/OR OTHER MECHANISMS FOR ENSURING ONGOING OPERATION, MAINTENANCE,FUNDING AND TRANSFER OF REQUIREMENTS FOR THIS PROJECT-SPECIFIC WQMP Whitewater River Region Final WQMP The Living Desert– Phase 2.5 Appendix H PHASE 1ENVIRONMENTAL SITE ASSESSMENT –SUMMARY OF SITE REMEDIATION CONDUCTED AND USE RESTRICTIONS (NOT AVAILABLE) Whitewater River Region Final WQMP The Living Desert– Phase 2.5 Appendix I PROJECT-SPECIFIC WQMPSUMMARY DATA FORM Project-Specific WQMP Summary Data Form Applicant Information Name and Title Allen Monroe, President/CEO Company The Living Desert Phone (760) 346-5694 Email amonroe@livingdesert.org Project Information Project Name (as shown on project application/project-specific WQMP) The Living Desert – Phase 2.5 Street Address 47900 Portola Avenue Nearest Cross Streets Portola Avenue Municipality (City or Unincorporated County)Palm Desert Zip Code 92211 Tract Number(s) and/or Assessor Parcel Number(s)APN 655-230-019 Other (other information to help identify location of project) The Thomas Guide: Page 848, grid G4 (2007 Riverside County Edition) Indicate type of project. Priority Development Projects (Use an "X" in cell preceding project type): 6)KLOOVLGHUHVLGHQFHLPSHUYLRXVDUHD•VTIW6ORSH• 6)KLOOVLGHUHVLGHQFHLPSHUYLRXVDUHD•VTIW6ORSH• HURVLYHVRLOV &RPPHUFLDORU,QGXVWULDO•VTIW Automotive repair shop Retail Gasoline Outlet disturbing > 5,000 sq. ft. Restaurant disturbing > 5,000 sq. ft. +RPHVXEGLYLVLRQ•KRXVLQJXQLWV X 3DUNLQJORW•VTIWRU•SDUNLQJVSDFHV Date Project-Specific WQMP Submitted Preliminary WQMP: 06/05/2017 Size of Project Area (nearest 0.1 acre)11.7 acres (Phase 2.5) Will the project replace more than 50% of the impervious surfaces on an existing developed site? No Project Area managed with LID/Site Design BMPs (nearest 0.1 acre) 11.7 acres (Phase 2.5) Are Treatment Control BMPs required?No Is the project subject to onsite retention by ordinance or policy? Yes Did the project meet the 100% LID/Site Design Measurable Goal? Yes Name of the entity that will implement, operate, and maintain the post-construction BMPs The Living Desert Contact Name Allen Monroe, President/CEO Street or Mailing Address 47900 Portola Avenue City Palm Desert, CA Zip Code 92260 Phone (760) 346-5694 Space Below for Use by City/County Staff Only Preceding Information Verified by (consistent with information in project-specific WQMP) Name: Date: Date Project-Specific WQMP Approved: Data Entered by Name: Date: Other Comments For Property Located in Those Portions of Section 32, T5S., R6E., SBM In the City of Palm Desert, California The Living Desert Crossroads of Conservation Phase 2.5 May 10, 2022 Prepared for: The Living Desert 47900 Portola Avenue Palm Desert, CA 92260 JN: 2244 FINAL HYDROLOGY REPORT THE LIVING DESERT – PHASE 2.5 FINAL HYDROLOGY REPORT TABLE OF CONTENTS EXECUTIVE SUMMARY ................................................................................................ 1 PROJECT LOCATION .................................................................................................... 1 EXISTING SITE CONDITIONS ........................................................................................ 1 Flood Rate Map ..................................................................................................................1 PROPOSED FLOOD CONTROL REQUIREMENTS ............................................................ 1 HYDROLOGY ANALYSIS DESIGN CRITERIA .................................................................... 1 National Cooperative Soil Survey ........................................................................................2 Antecedent Moisture Condition ...........................................................................................2 Land Use Classifications and Runoff Index Numbers .............................................................2 Precipitation Frequency Estimates .......................................................................................2 SYNTHETIC UNIT HYDROGRAPH (SHORTCUT METHOD) ANALYSES .............................. 2 RESULTS AND CONCLUSIONS ...................................................................................... 3 LIST OF APPENDICES A. RIVERSIDE COUNTY TLMA VICINITY MAP B. NFIP FLOOD INSURANCE RATE MAP C. USDA NCSS HYDROLOGIC SOILS MAP D. NOAA ATLAS 14 & RCFCD REFERENCE PLATES E. RCFC&WCD SYNTHETIC UNIT HYDROGRAPH WORKSHEETS F. RETENTION CHAMBER STORAGE CALCULATIONS G. WQMP VOLUME WORKSHEETS H. EXISTING CONDITIONS EXHIBIT I. HYDROLOGY EXHIBIT THE LIVING DESERT – PHASE 2.5 FINAL HYDROLOGY REPORT 1 EXECUTIVE SUMMARY The proposed project at The Living Desert in the City of Palm Desert consists of an expansion of the current parking area toward the south and the development of a new Facilities Building and a new Storage Building. On-site storm runoff will be conveyed through sheet flows, curb gutters, and storm drain lines to underground retention facilities designed to retain the incremental increase in stormwater volume resulting from the new development, with subsequent runoff following existing drainage routes. PROJECT LOCATION The proposed project site is located primarily along the south boundary of The Living Desert in Sections 32, Township 5 South, Range 6 East, San Bernardino Base and Meridian. A vicinity map obtained from the Riverside TLMA website is included as Appendix A. EXISTING SITE CONDITIONS The subject area consists of previously developed land with various buildings and structures. Mounding on the perimeter of the surrounding areas of The Living Desert prevents offsite flows from entering the project area. The existing parking lot uses a combination of permeable pavers and storm drain catch basins to percolate storm flows into the ground or convey them to the existing 66” storm drain line running underneath the project site. On-site flows within the project site typically flow south to north and generally occur as sheet flow. Refer to Appendix H for the Existing Conditions Exhibit. Flood Rate Map The proposed (to be developed) area is covered by FIRM Panel Number 06065C2228G, revised May 2, 2013, by LOMR 12-09-314P-060254 which indicates the project area lies within Zone X (Shaded), which is defined as “Areas of 0.2% annual chance flood; areas of 1% annual chance flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 1% annual chance flood. Insurance purchase is not required in these zones”. (Refer to the attached Flood Insurance Rate Map – Appendix B). PROPOSED FLOOD CONTROL REQUIREMENTS Drainage requirements for this project fall under the jurisdiction of the City of Palm Desert. Stormwater runoff will be conveyed through street gutters and swales to proposed inlets and subsequently to three proposed retention storage facilities. The retention facilities will be sized to retain the incremental increase in storm runoff volume, with further runoff being allowed to continue onto existing or proposed drainage routes. The expanded public parking area will be surfaced with permeable pavers to match the existing surface treatment. The existing permeable pavers appear to have been well maintained and have been observed over the years to perform well in eliminating the accumulation of stormwater runoff at the parking area’s low point at the northeast corner. No new storm drain facilities will be connected directly to the existing 66” storm drain line which runs north under the existing parking lot. HYDROLOGY ANALYSIS DESIGN CRITERIA Storm run-off volumes for the 100-year event were obtained utilizing the Synthetic Unit (Shortcut Method) Hydrograph, as described in the RCFC&WCD Hydrology Manual. The shortcut method is useful for evaluating those areas less than 200 acres in size. The hydrologic data used for the calculations are as follows: THE LIVING DESERT – PHASE 2.5 FINAL HYDROLOGY REPORT 2 National Cooperative Soil Survey The existing soil is categorized as “not rated” as shown on the attached National Cooperative Soil Survey exhibits in Appendix C. Per the Earth Systems Southwest Geotechnical Engineering and Percolation Report, File No. PID- 000166-001, Doc. No. 16-03-714, dated March 30, 2016, site “alluvial soils consist generally of well and poorly graded sands with varying amounts of silt and gravel (Universal Soils Classification System symbols of SP and SW, SP-SM, and SW-SM).” This description matches Soil Group A, defined by RCFCD as – “those soils having high infiltration rates. These soils consist mainly of deep, well drained to excessively drained sands or gravely sands. These soils have a high rate of water transmission.” Antecedent Moisture Condition AMC II – Moderate runoff potential, an intermediate condition. Per RCFC&WCD Hydrology Manual (Dated: April, 1978): “For the purposes of design hydrology using District methods, AMC II should normally be assumed for both the 10 year and 100 year frequency storm”. Land Use Classifications and Runoff Index Numbers Runoff Index Numbers were obtained from RCFCD Plate D-5.5 and are summarized below: Existing Conditions – Open Brush Poor 62 Proposed Conditions – Paving/Hardscape 32 Percent of Impervious Cover (RCFCD Plate E-6.3): Existing Open Brush Poor 5% Buildings/Paving/Hardscape 100% Low Loss Rates: 85% Precipitation Frequency Estimates Precipitation depths were obtained from NOAA Atlas 14: 100 Year – 1 Hour Precipitation: 1.98 inches 100 Year – 3 Hour Precipitation: 2.59 inches 100 Year - 6 Hour Precipitation 3.16 inches 100 Year – 24 Hour Precipitation 4.88 inches See Appendix D for the NOAA Atlas 14 Point Precipitation Frequency Estimates and respective RCFCD Plates. SYNTHETIC UNIT HYDROGRAPH (SHORTCUT METHOD) ANALYSES The tributary areas are considerably less than the 200-acre limit guideline for utilization of the shortcut method. It should be noted that the peak flow for the 1-hour storm is not necessarily representative for peak flow. Per RCFC&WCD, peak discharges from the 3-hour storm should normally compare well with rational peaks. Analyses performed include comparative flood volume calculations for the existing and proposed conditions based on the RCFC&WCD Synthetic Unit Hydrograph (Shortcut Method). The differentials of the results provide the anticipated worst-case incremental increase flood volume from the 100-year storm event. The synthetic unit hydrograph worksheets are included in Appendix E and the Hydrology Exhibit is included in Appendix J, with results summarized below: THE LIVING DESERT – PHASE 2.5 FINAL HYDROLOGY REPORT 3 Drainage Area A STORM EVENT SUMMARY – DEVELOPED CONDITION Duration 1-HOUR 3-HOUR 6-HOUR 24-HOUR Effective Rain (in) 0.05 0.08 0.06 0.03 Flood Volume (cu-ft) (Incremental Increase) (acre-ft) 1,436 0.03 2,513 0.06 1,954 0.04 834 0.02 Peak Flow (cfs) 0.40 0.40 0.40 0.34 Drainage Area B STORM EVENT SUMMARY – DEVELOPED CONDITION Duration 1-HOUR 3-HOUR 6-HOUR 24-HOUR Effective Rain (in) 0.11 0.16 0.16 0.10 Flood Volume (cu-ft) (Incremental Increase) (acre-ft) 675 0.02 973 0.02 981 0.02 569 0.01 Peak Flow (cfs) 0.19 0.19 0.19 0.16 Drainage Area C STORM EVENT SUMMARY – DEVELOPED CONDITION Duration 1-HOUR 3-HOUR 6-HOUR 24-HOUR Effective Rain (in) 0.25 0.47 0.44 0.42 Flood Volume (cu-ft) (Incremental Increase) (acre-ft) 1,175 0.03 2,215 0.05 2,092 0.05 1,995 0.05 Peak Flow (cfs) 0.33 0.33 0.33 0.28 RESULTS AND CONCLUSIONS As demonstrated by the above narrative and appendices, the on-site storm water runoff from the 100-year storm event will be conveyed to the retention facilities, which have sufficient capacity to retain the incremental increase of flood volume from the 100-year storm. It is therefore concluded that this project conforms to the hydrologic requirements set forth by the City of Palm Desert. THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix A Riverside County TLMA Vicinity Map *IMPORTANT* Maps and data are to be used for reference purposes only. Map features are approximate, and are not necessarily accurate to surveying or engineering standards. The County of Riverside makes no warranty or guarantee as to the content (the source is often third party), accuracy, timeliness, or completeness of any of the data provided, and assumes no legal responsibility for the information contained on this map. Any use of this product with respect to accuracy and precision shall be the sole responsibility of the user.© Riverside County RCIT GIS3,778 FeetLegendVicinity MapNotes1,8890REPORT PRINTED ON...8/26/2016 3:31:04 PMDisplay ParcelsCity BoundariesCitiesroadsannohighwaysHWYINTERCHANGEINTERSTATEOFFRAMPONRAMPUSHWYcountiescitieshydrographylineswaterbodiesLakesRivers THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix B NFIP Flood Insurance Rate Map DEFINITIONS OF FEMA FLOOD ZONE DESIGNATIONS Moderate to Low Risk Areas In communities that participate in the NFIP, flood insurance is available to all property owners and renters in these zones: ZONE DESCRIPTION X (Shaded) Areas of 0.2% annual chance flood; areas of 1% annual chance flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from 1% annual chance flood. Insurance purchase is not required in these zones. X Areas determined to be outside the 0.2% annual chance floodplain. High Risk Areas In communities that participate in the NFIP, mandatory flood insurance purchase requirements apply to all of these zones: ZONE DESCRIPTION A Areas with a 1% annual chance of flooding and a 26% chance of flooding over the life of a 30-year mortgage. Because detailed analyses are not performed for such areas; no depths or base flood elevations are shown within these zones. AE Areas with a 1% annual chance of flooding and a 26% chance of flooding over the life of a 30-year mortgage. In most instances, base flood elevations derived from detailed analyses are shown at selected intervals within these zones. AH Areas with a 1% annual chance of shallow flooding, usually in the form of a pond, with an average depth ranging from 1 to 3 feet. These areas have a 26% chance of flooding over the life of a 30-year mortgage. Base flood elevations derived from detailed analyses are shown at selected intervals within these zones. AO River or stream flood hazard areas, and areas with a 1% or greater chance of shallow flooding each year, usually in the form of sheet flow, with an average depth ranging from 1 to 3 feet. These areas have a 26% chance of flooding over the life of a 30-year mortgage. Average flood depths derived from detailed analyses are shown within these zones. For areas of alluvial fan flooding, velocities are also determined. AR Areas with a temporarily increased flood risk due to the building or restoration of a flood control system (such as a levee or a dam). Mandatory flood insurance purchase requirements will apply, but rates will not exceed the rates for unnumbered A zones if the structure is built or restored in compliance with Zone AR floodplain management regulations. A99 Areas with a 1% annual chance of flooding that will be protected by a Federal flood control system where construction has reached specified legal requirements. No depths or base flood elevations are shown within these zones. X (Shaded) Areas of 0.2% annual chance flood; areas of 1% annual chance flood with average depths of less than 1 foot or with drainage areas less thangp g 1 square mile; and areas protected by levees from 1% annual chance q; p y flood. Insurance purchase is not required in these zones. High Risk – Coastal Areas In communities that participate in the NFIP, mandatory flood insurance purchase requirements apply to all of these zones: ZONE DESCRIPTION V Coastal areas with a 1% or greater chance of flooding and an additional hazard associated with storm waves. These areas have a 26% chance of flooding over the life of a 30-year mortgage. No base flood elevations are shown within these zones. VE Coastal areas with a 1% or greater chance of flooding and an additional hazard associated with storm waves. These areas have a 26% chance of flooding over the life of a 30-year mortgage. Base flood elevations derived from detailed analyses are shown at selected intervals within these zones. Undetermined Risk Areas ZONE DESCRIPTION D Areas with possible but undetermined flood hazards. No flood hazard analysis has been conducted. Flood insurance rates are commensurate with the uncertainty of the flood risk. 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PHASE 2.5 FINAL HYDROLOGY REPORT Appendix D NOAA Atlas 14 RCFCD Reference Plates NOAA Atlas 14, Volume 6, Version 2 Location name: Indian Wells, California, US* Latitude: 33.6992°, Longitude: -116.3739° Elevation: 382 ft* * source: Google Maps POINT PRECIPITATION FREQUENCY ESTIMATES Sanja Perica, Sarah Dietz, Sarah Heim, Lillian Hiner, Kazungu Maitaria, Deborah Martin, Sandra Pavlovic, Ishani Roy, Carl Trypaluk, Dale Unruh, Fenglin Yan, Michael Yekta, Tan Zhao, Geoffrey Bonnin, Daniel Brewer, Li-Chuan Chen, Tye Parzybok, John Yarchoan NOAA, National Weather Service, Silver Spring, Maryland PF_tabular | PF_graphical | Maps_&_aerials PF tabular PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1 Duration Average recurrence interval (years) 1 2 5 10 25 50 100 200 500 1000 5-min 0.075 (0.063-0.091) 0.115 (0.096-0.140) 0.178 (0.148-0.216) 0.238 (0.196-0.291) 0.335 (0.267-0.425) 0.424 (0.331-0.550) 0.530 (0.403-0.704) 0.657 (0.485-0.898) 0.864 (0.611-1.23) 1.06 (0.724-1.57) 10-min 0.108 (0.090-0.131) 0.165 (0.138-0.200) 0.255 (0.212-0.310) 0.341 (0.281-0.417) 0.480 (0.382-0.609) 0.608 (0.474-0.788) 0.760 (0.578-1.01) 0.941 (0.696-1.29) 1.24 (0.876-1.77) 1.52 (1.04-2.24) 15-min 0.131 (0.109-0.158) 0.200 (0.167-0.242) 0.308 (0.256-0.374) 0.412 (0.340-0.505) 0.581 (0.463-0.736) 0.735 (0.573-0.953) 0.919 (0.699-1.22) 1.14 (0.841-1.56) 1.50 (1.06-2.14) 1.84 (1.25-2.71) 30-min 0.196 (0.164-0.238) 0.300 (0.250-0.364) 0.463 (0.385-0.563) 0.619 (0.511-0.759) 0.873 (0.696-1.11) 1.11 (0.862-1.43) 1.38 (1.05-1.84) 1.71 (1.27-2.34) 2.25 (1.59-3.21) 2.76 (1.89-4.08) 60-min 0.281 (0.234-0.340) 0.429 (0.358-0.520) 0.662 (0.551-0.805) 0.885 (0.730-1.09) 1.25 (0.994-1.58) 1.58 (1.23-2.05) 1.98 (1.50-2.62) 2.45 (1.81-3.35) 3.22 (2.28-4.59) 3.95 (2.70-5.83) 2-hr 0.388 (0.324-0.469) 0.569 (0.475-0.689) 0.848 (0.705-1.03) 1.11 (0.915-1.36) 1.53 (1.22-1.93) 1.90 (1.48-2.46) 2.33 (1.77-3.10) 2.84 (2.10-3.88) 3.64 (2.58-5.20) 4.38 (2.99-6.47) 3-hr 0.458 (0.383-0.554) 0.664 (0.553-0.804) 0.976 (0.811-1.19) 1.27 (1.04-1.55) 1.72 (1.37-2.18) 2.13 (1.66-2.76) 2.59 (1.97-3.44) 3.13 (2.31-4.28) 3.98 (2.82-5.67) 4.74 (3.24-7.00) 6-hr 0.592 (0.495-0.717) 0.852 (0.710-1.03) 1.24 (1.03-1.51) 1.59 (1.31-1.95) 2.14 (1.71-2.71) 2.62 (2.04-3.39) 3.16 (2.40-4.20) 3.78 (2.79-5.17) 4.73 (3.35-6.75) 5.57 (3.80-8.23) 12-hr 0.722 (0.603-0.873) 1.06 (0.882-1.28) 1.55 (1.29-1.89) 2.00 (1.64-2.44) 2.67 (2.13-3.38) 3.24 (2.53-4.20) 3.89 (2.96-5.16) 4.61 (3.41-6.31) 5.71 (4.04-8.14) 6.65 (4.54-9.83) 24-hr 0.875 (0.774-1.01) 1.32 (1.16-1.52) 1.95 (1.72-2.26) 2.52 (2.20-2.94) 3.37 (2.85-4.06) 4.09 (3.39-5.02) 4.88 (3.96-6.14) 5.76 (4.55-7.45) 7.08 (5.37-9.53) 8.21 (6.02-11.4) 2-day 1.01 (0.889-1.16) 1.53 (1.36-1.77) 2.30 (2.03-2.66) 2.98 (2.61-3.48) 4.00 (3.39-4.82) 4.86 (4.04-5.97) 5.81 (4.71-7.31) 6.87 (5.43-8.88) 8.46 (6.42-11.4) 9.81 (7.20-13.6) 3-day 1.08 (0.952-1.24) 1.65 (1.46-1.91) 2.49 (2.20-2.89) 3.24 (2.83-3.78) 4.36 (3.69-5.25) 5.31 (4.41-6.52) 6.36 (5.15-8.00) 7.53 (5.95-9.73) 9.29 (7.05-12.5) 10.8 (7.92-15.0) 4-day 1.15 (1.01-1.32) 1.76 (1.56-2.03) 2.66 (2.35-3.08) 3.46 (3.03-4.04) 4.66 (3.95-5.61) 5.68 (4.72-6.98) 6.81 (5.52-8.56) 8.07 (6.37-10.4) 9.96 (7.56-13.4) 11.6 (8.50-16.1) 7-day 1.22 (1.08-1.41) 1.88 (1.66-2.17) 2.84 (2.50-3.28) 3.69 (3.23-4.30) 4.97 (4.21-5.98) 6.05 (5.02-7.44) 7.25 (5.88-9.12) 8.58 (6.78-11.1) 10.6 (8.02-14.2) 12.3 (9.01-17.1) 10-day 1.26 (1.11-1.45) 1.94 (1.71-2.23) 2.93 (2.58-3.39) 3.81 (3.33-4.45) 5.14 (4.35-6.19) 6.26 (5.20-7.69) 7.49 (6.07-9.42) 8.86 (6.99-11.5) 10.9 (8.27-14.7) 12.6 (9.28-17.6) 20-day 1.36 (1.21-1.57) 2.13 (1.88-2.46) 3.26 (2.87-3.77) 4.26 (3.72-4.97) 5.75 (4.87-6.93) 7.01 (5.82-8.62) 8.38 (6.80-10.5) 9.91 (7.82-12.8) 12.1 (9.21-16.3) 14.0 (10.3-19.5) 30-day 1.49 (1.32-1.72) 2.36 (2.08-2.72) 3.64 (3.20-4.21) 4.77 (4.17-5.57) 6.47 (5.48-7.79) 7.89 (6.55-9.69) 9.42 (7.64-11.9) 11.1 (8.77-14.4) 13.6 (10.3-18.3) 15.6 (11.5-21.7) 45-day 1.61 (1.42-1.86) 2.60 (2.30-3.00) 4.04 (3.56-4.68) 5.33 (4.66-6.22) 7.25 (6.14-8.73) 8.86 (7.35-10.9) 10.6 (8.58-13.3) 12.5 (9.84-16.1) 15.2 (11.5-20.4) 17.4 (12.8-24.2) 60-day 1.72 (1.52-1.99) 2.82 (2.49-3.26) 4.43 (3.91-5.13) 5.87 (5.13-6.84) 7.99 (6.77-9.63) 9.77 (8.11-12.0) 11.7 (9.47-14.7) 13.7 (10.8-17.8) 16.7 (12.7-22.5) 19.1 (14.0-26.6) 1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS). Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates (for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values. Please refer to NOAA Atlas 14 document for more information. Back to Top PF graphical Page 1 of 4Precipitation Frequency Data Server 8/26/2016http://dipper.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=33.6992&lon=-116.3739&d... 1.98 2.59 3.16 4.88 Back to Top Maps & aerials Small scale terrain Map data ©2016 Google, INEGIReport a map error50 km¦ Page 2 of 4Precipitation Frequency Data Server 8/26/2016http://dipper.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=33.6992&lon=-116.3739&d... Large scale terrain Large scale map Large scale aerial Back to Top US Department of Commerce National Oceanic and Atmospheric Administration National Weather Service National Water Center 1325 East West Highway Silver Spring, MD 20910 Map data ©2016 GoogleReport a map error2 km¦ Map data ©2016 GoogleReport a map error2 km¦ Imagery ©2016 TerraMetricsReport a map error2 km¦ Page 3 of 4Precipitation Frequency Data Server 8/26/2016http://dipper.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=33.6992&lon=-116.3739&d... Questions?: HDSC.Questions@noaa.gov Disclaimer Page 4 of 4Precipitation Frequency Data Server 8/26/2016http://dipper.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=33.6992&lon=-116.3739&d... 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'HYHORSHG+U6WRUP 3DJHRI THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix F Retention Chamber Storage Calculations Call StormTech at 860.529.8188 or 888.892.2694 or visit our website at www.stormtech.com for technical and product information.4 StormTech MC-4500 Chamber MC-4500 ChamberDesigned to meet the most stringent industry performance standards for superior structural integrity while providing designers with a cost-effective method to save valuable land and protect water resources. The StormTech system is designed primarily to be used under parking lots, thus maximizing land usage for commercial and municipal applications. StormTech MC-4500 Chamber (not to scale) 1RPLQDO&KDPEHU6SHFLÛFDWLRQV Size (L x W x H) 52” (1321 mm) x 100” (2540 mm) x 60” (1524 mm) Chamber Storage 106.5 ft 3 (3.01 m3) Min. Installed Storage* 162.6 ft3 (4.60 m3) Weight 120 lbs (54.4 kg) * This assumes a minimum of 12” (300 mm) of stone above, 9” (230 mm) of stone below chambers, 9” (230 )mm between chambers/end caps and 40% stone porosity. Shipping 7 chambers/pallet 11 pallets/truck StormTech MC-4500 End Cap (not to scale) 1RPLQDO&KDPEHU6SHFLÛFDWLRQV Size (L x W x H) 35.1” (891 mm) x 90.2” (2291 mm) x 59.4” (1509 mm) Chamber Storage 35.7 ft3 (1.01 m3) Min. Installed Storage* 108.7 ft3 (3.08 m3) Weight 120 lbs (54.4 kg) * This assumes a minimum of 12” (300 mm) of stone above, 9” (230 mm) of stone below, 6” (150 mm) of stone perimeter, 9” (230 mm) between chambers/end caps and 40% stone porosity. RETENTION STORAGE CALCULATIONS DRAINAGE AREA A REQUIRED VOLUME = 2,513 CF Retention storage facility used: ADS StormTech MC-4500 Per StormTech specifications: Chamber section storage capacity: 106.5 ft3 per section End cap storage capacity: 35.7 ft3 per end cap 12 chamber sections used: Total chamber storage capacity = (12 × 106.5 ft 3) + (2 × 35.7 ft3) = 1,349 ft 3 Chamber height = 60” ÷ 12 in/ft = 5 ft Chamber width = 100” ÷ 12 in/ft = 8.33 ft Chamber overall length = (12 × 48.3 in ÷ 12 in/ft) + (2 × 30.7 in ÷ 12 in/ft) = 53.42 ft Stone envelope around chambers extends 2 feet below chamber bottom and 1 foot around all other sides and is assumed to have 40% voids: Stone envelope volume = 55.42 ft × 10.33 ft × 8 ft = 4,580 ft 3 Stone envelope storage capacity = (4,580 ft 2 – 1,349 ft 2)× 40% = 1,292 ft 3 Total retention storage volume provided = 1,349 ft 3 + 1,292 ft 3 =2,641 ft 3 RETENTION STORAGE CALCULATIONS DRAINAGE AREA B REQUIRED VOLUME = 981 CF Retention storage facility used: ADS StormTech MC-4500 Per StormTech specifications: Chamber section storage capacity: 106.5 ft3 per section End cap storage capacity: 35.7 ft3 per end cap 4 chamber sections used: Total chamber storage capacity = (4 × 106.5 ft 3) + (2 × 35.7 ft3) = 497 ft 3 Chamber height = 60” ÷ 12 in/ft = 5 ft Chamber width = 100” ÷ 12 in/ft = 8.33 ft Chamber overall length = (4 × 48.3 in ÷ 12 in/ft) + (2 × 30.7 in ÷ 12 in/ft) = 21.22 ft Stone envelope around chambers extends 2 feet below chamber bottom and 1 foot around all other sides and is assumed to have 40% voids: Stone envelope volume = 21.22 ft × 10.33 ft × 8 ft = 1,754 ft 3 Stone envelope storage capacity = (1,754 ft 2 –497ft2)× 40% = 503 ft 3 Total retention storage volume provided = 497 ft 3 + 503 ft 3 =1,000 ft 3 RETENTION STORAGE CALCULATIONS DRAINAGE AREA C REQUIRED VOLUME = 2,215 CF Retention storage facility used: ADS StormTech MC-4500 Per StormTech specifications: Chamber section storage capacity: 106.5 ft3 per section End cap storage capacity: 35.7 ft3 per end cap 9 total chamber sections used, configured a linked 5-unit and 4-unit chambers: 4-unit chamber capacity, as calculated for Drainage Area B above: 1,000 ft3 5-unit total chamber storage capacity = (5 × 106.5 ft 3) + (2 × 35.7 ft3) = 604 ft 3 Chamber height = 60” ÷ 12 in/ft = 5 ft Chamber width = 100” ÷ 12 in/ft = 8.33 ft Chamber overall length = (5 × 48.3 in ÷ 12 in/ft) + (2 × 30.7 in ÷ 12 in/ft) = 25.24 ft Stone envelope around chambers extends 2 feet below chamber bottom and 1 foot around all other sides and is assumed to have 40% voids: Stone envelope volume = 27.24 ft × 10.33 ft × 8 ft = 2,251 ft 3 Stone envelope storage capacity = (2,251 ft 2 –604ft2)× 40% = 659 ft 3 5-unit chamber retention storage volume provided = 604 ft 3 + 659 ft 3 =1,263ft3 Total retention storage volume provided = 1,000 ft 3 + 1,263 ft 3 =2,263 ft 3 THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix G WQMP Volume Worksheets Date Enter the Area Tributary to this Feature (ATRIB)ATRIB =8.79 acres AIMP =1.43 acres If =0.16 Use the following equation based on the WEF/ASCE Method CBMP = 0.858If 3 - 0.78If 2 + 0.774If + 0.04 CBMP = 0.15 Vu = 0.06 VBMP (ft3)= VBMP =1,914 ft 3 (in*ac)/ac Notes: Calculate the composite Runoff Coefficient, C for the BMP Tributary Area 12 (in/ft) Calculate VU, the 80% Unit Storage Volume VU= 0.40 x CBMP VU (in-ac/ac) x AT (ac) x 43,560 (ft2/ac) Determine the Impervious Area Ratio Company Project Number/Name Calculate Impervious Area Ratio (If) If = AIMP/ATRIB Determine the Impervious Area within ATRIB (AIMP) Whitewater Watershed BMP Design Volume, VBMP (Rev. 06-2014) Legend: Determine Design Storage Volume, VBMP Calculate the design storage volume of the BMP, VBMP. 5/10/2022 Required Entries Calculated Cells The Living Desert - Phase 2.5 Drainage Area A Designed by RRR Company Name MSA Consulting, Inc. County/City Case No Drainage Area Number/Name Date Enter the Area Tributary to this Feature (ATRIB)ATRIB =1.64 acres AIMP =0.44 acres If =0.27 Use the following equation based on the WEF/ASCE Method CBMP = 0.858If 3 - 0.78If 2 + 0.774If + 0.04 CBMP = 0.21 Vu = 0.08 VBMP (ft3)= VBMP =476 ft 3 (in*ac)/ac Notes: Calculate the composite Runoff Coefficient, C for the BMP Tributary Area 12 (in/ft) Calculate VU, the 80% Unit Storage Volume VU= 0.40 x CBMP VU (in-ac/ac) x AT (ac) x 43,560 (ft2/ac) Determine the Impervious Area Ratio Company Project Number/Name Calculate Impervious Area Ratio (If) If = AIMP/ATRIB Determine the Impervious Area within ATRIB (AIMP) Whitewater Watershed BMP Design Volume, VBMP (Rev. 06-2014) Legend: Determine Design Storage Volume, VBMP Calculate the design storage volume of the BMP, VBMP. 5/10/2022 Required Entries Calculated Cells The Living Desert - Phase 2.5 Drainage Area B Designed by RRR Company Name MSA Consulting, Inc. County/City Case No Drainage Area Number/Name Date Enter the Area Tributary to this Feature (ATRIB)ATRIB =1.31 acres AIMP =0.64 acres If =0.49 Use the following equation based on the WEF/ASCE Method CBMP = 0.858If 3 - 0.78If 2 + 0.774If + 0.04 CBMP = 0.33 Vu = 0.13 VBMP (ft3)= VBMP =618 ft 3 (in*ac)/ac Notes: Calculate the composite Runoff Coefficient, C for the BMP Tributary Area 12 (in/ft) Calculate VU, the 80% Unit Storage Volume VU= 0.40 x CBMP VU (in-ac/ac) x AT (ac) x 43,560 (ft2/ac) Determine the Impervious Area Ratio Company Project Number/Name Calculate Impervious Area Ratio (If) If = AIMP/ATRIB Determine the Impervious Area within ATRIB (AIMP) Whitewater Watershed BMP Design Volume, VBMP (Rev. 06-2014) Legend: Determine Design Storage Volume, VBMP Calculate the design storage volume of the BMP, VBMP. 5/10/2022 Required Entries Calculated Cells The Living Desert - Phase 2.5 Drainage Area C Designed by RRR Company Name MSA Consulting, Inc. County/City Case No Drainage Area Number/Name THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix H Existing Conditions Exhibit THE LIVING DESERT - PHASE 2.5 FINAL HYDROLOGY REPORT Appendix I Hydrology Exhibit CITY OF PALM DESERT ATTENDANCE REPORT Advisory Body: Prepared By: Year Month Date 4-Jan 18-Jan 1-Feb 15-Feb 1-Mar 15-Mar 5-Apr 19-Apr 3-May 17-May 7-Jun 21-Jun DeLuna, Nancy - P P - P P - P P - P - Greenwood, John - P P - P P - A P - P - Gregory, Ron - P P - P P - A P - P - Holt, Lindsay - P P - P P - P P - P - Pradetto, Joseph - P A - P P - P P - A - - Palm Desert Municipal Code 2.34.010: PPresent AAbsent EExcused - No meeting 2022 2022 2022 2022 2022 Planning Commission M. O'Reilly 2022 Twice Monthly: Six unexcused absences from regular meetings in any twelve-month period shall constitute an automatic res Jan Feb Mar Apr May Jun CITY OF PALM DESERT ATTENDANCE REPORT 6-Sep 20-Sep 4-Oct 18-Oct 1-Nov 15-Nov 6-Dec 20-Dec 0 0 1 1 1 1 0 0 2 2 Total Absences Oct Nov Dec ng office on boards that meet twice monthly. Total Unexcused Absences Sep 2022 2022 2022 2022 SUPPLEMENTAL INFORMATION From:Nick Melloni To:soffenbach@aol.com Cc:Monica O"Reilly Subject:RE: Planned const. at the Living Desert Date:Tuesday, June 28, 2022 10:00:14 AM Attachments:Pages from PP22-0001 - Planning Commission Set.pdf image001.png Hello Sheldon, Thank you for your email. I am the project planner on this case. The staff report is under review. It will be posted on the website by this Friday: https://www.cityofpalmdesert.org/our- city/committees-and-commissions/planning-commission-information-center The new driveway is located along Portola Avenue, at the southern edge of The Living Desert, approximately 180 feet north of Reserve Drive (see the area circled in red on the photo below for the general vicinity). The new driveway is separate from the main public entry and will be used by zoo staff only. Public access to the parking area will utilize the existing entrance. The proposed improvements on Portola Avenue are shown on the attached sheet and will consist of new median improvements. No new signals or stops were required for the project. Here is a link to view the preliminary project plans being presented to Planning Commission: http://cpdftp.org/link/H1ds80qMZ1iLCu7BToCyhJ Feel free to call me if you have further questions. Nick Melloni Associate Planner Ph: 760.346.0611 Direct: 760.776.6479 nmelloni@cityofpalmdesert.org From: soffenbach@aol.com <soffenbach@aol.com> Sent: Tuesday, June 28, 2022 9:26 AM To: Nick Melloni <nmelloni@cityofpalmdesert.org> Subject: Planned const. at the Living Desert Sir, I am a resident of Palm Desert and have lived at 73820 Buckboard Trail since 2004. I have seen an increase in traffic regarding special occasions at the Living Desert that effects my quality of life. I am looking forward to seeing a larger parking lot inside the complex but after reading the planning letter I have one question. Regarding the construction of a new staff driveway providing vehicle access to Portola Ave. I would like to know the whereabouts of this new driveway and if it is going to further continue to threaten my quality of life. I have considered putting my house on the market if things do not improve. Also, are there going to be any improvements on Portola Av.? Such as stop signs, traffic signals, new signage, etc... Sincerely, Sheldon Offenbach From:Greg Hammond To:Nick Melloni Cc:Monica O"Reilly; David Lawrence; Melyssa Sobczyk Subject:Re: Case #PP22-0001 - Living Desert Project (& Corsican Villas HOA) Date:Friday, July 1, 2022 1:35:23 PM Hello Nick Melloni and City of Palm Desert I, on behalf of the Palm Desert Corsican Villas Homeowners Association, would like to comment on the upcoming Public Hearing for case #PP-22-0001. The expansion plan for The Living Desert Zoo & Gardens. Our community of 130 condos are located directly across the street from The Living Desert. We enjoy our proximity to the zoo and have been neighbors for our almost 50-year existence. Corsican Villas was built in 1973 with The Living Desert starting a couple of years before that. During that time The Living Desert has grown to a world renown attraction bringing with it enormous growth in traffic. They currently anticipate annually, a half million visitors. And with the substantial land still available to them, we anticipate their continued exponential growth in the coming years. I recognize that the current expansion and it’s approval falls under the 2016 impact report. Unfortunately, I was unable to participate in those meetings. But I would now like it on the record that our HOA has expressed concern with the ever-expanding traffic so when the next impact report is prepared (when The Living Desert proposes new exhibits), our desire for relief is considered. Specifically, a component of our residents consists of older, single, retirees. And they have expressed to me that leaving our property is becoming difficult as The Living Desert traffic increases and especially when The Living Desert holds one of their big events (such as Glow in the Park, Brew at the Zoo, Earth Day, Annual Fundraiser, Frogs & Princesses, Holiday Million Lights, etc.). I have also heard statements that ride share and delivery services are also hampered. The Living Desert, for their part, does attempt to help with traffic control at times. However, our HOA would like to explore more permanent solutions. The ideal solution would be to place a stop sign at our entrance. This also would enable a permanent crosswalk across Portola. Pedestrian safety is a concern as many cars coming north down Portola from Ironwood, Reserve, etc. are moving at high speeds. Many times park visitors park their cars up and down Portola so a crosswalk would be very beneficial to them and ensure the safety of the little ones with their families. Another potential solution would be to place that stop sign at Buckboard. The problem for our HOA with that placement, is it would not help our egress out our front gate. We do, however, have an opportunity to open up an avenue out of our community next to our tennis courts which dumps onto Buckboard, then allowing us access to a Buckboard stop sign. The construction of a gate and roadwork for that path however would cost approximately $25,000. Like I said our community is full of retirees on fixed incomes and our budget is very tight. We would hope that the city would help with that cost if it were determined that the Buckboard stop sign is the most appropriate. I know this current public hearing is not the place to immediately solve our traffic concerns. But please consider a change and exploration of ideas moving forward. And if you would like to meet with me on site for discussions, that would be welcome. Respectfully submitted. -Greg Hammond, President Palm Desert Corsican Villas Homeowners Assocation From: Nick Melloni <nmelloni@cityofpalmdesert.org> Sent: Thursday, June 30, 2022 5:03 PM To: Greg Hammond <GregoryJH@msn.com> Cc: Monica O'Reilly <moreilly@cityofpalmdesert.org> Subject: RE: Case #PP22-0001 - Living Desert Project ( & Corsican Villas HOA) Hello Greg, Here are the plans which will be presented to the Planning Commission on July 5th: http://cpdftp.org/link/H1ds80qMZ1iLCu7BToCyhJ Feel free to call me directly or email me if you have any questions. Thank you. Nick Melloni Associate Planner Ph: 760.346.0611 Direct: 760.776.6479 nmelloni@cityofpalmdesert.org From: Greg Hammond <GregoryJH@msn.com> Sent: Thursday, June 30, 2022 4:34 PM To: Nick Melloni <nmelloni@cityofpalmdesert.org> Subject: Case #PP22-0001 - Living Desert Project ( & Corsican Villas HOA) Good afternoon Mr. Melloni- My name is Greg Hammond and I am the President of the Palm Desert Corsican Villas Homeowners Association. I left you a voicemail this morning, not sure if you got it. As you may know, Corsican Villas is a small 130 unit condo community directly across the street from the Living Desert Reserve. We have received the notice of Public Hearing scheduled for Tuesday, July 5th. I have some questions and hope that you can call me to discuss before the Public Hearing. Unfortunately I am not local (I live in Orange County) and cannot come to the city office to look at plans. I would like to speak with you, but if you are able to email me any plans to help with my understanding of the scope and location of the project details, that would be very much appreciated. Thank you for your consideration. -Greg Hammond From:Nick Melloni To:Melinda Gonzalez Cc:Rosie Lua; Richard Cannone; Monica O"Reilly Subject:FW: Questions re Expansion of The Living Desert Date:Tuesday, July 5, 2022 8:51:32 AM Melinda, Please see the email below from over the weekend regarding the Living Desert item going to Planning Commission tonight. Nick Melloni Associate Planner Ph: 760.346.0611 Direct: 760.776.6479 nmelloni@cityofpalmdesert.org -----Original Message----- From: Dianna Ploeger <ploegersue@gmail.com> Sent: Sunday, July 3, 2022 1:22 PM To: Nick Melloni <nmelloni@cityofpalmdesert.org> Subject: Questions re Expansion of The Living Desert Hello Nick Melloni, I do have some questions for you with regards to the above. 1) What increased traffic will these additional parking spaces add to Portola Avenue? Will an additional stop sign be added? 2) Where will these new buildings be located? And how will the residents located just west of The Living Desert be impacted? 3) Special event parking is needed! Will the Living Desert and/ or the city do anything about the horrendous traffic created by special events and the nightmares these cause the residents in Silver Spur Ranch? It has become increasingly difficult to make left (north) turns onto Portola Avenue, not to mention how much more traffic is created on Buckboard as all tourists visiting The Living Desert use Buckboard Trail for overflow parking. 4) Construction, noise, dust etc. How much? When will this project begin? Silver Spur Ranch, the condos to the north (the name escapes me at the moment), and parts of Ironwood will most likely bare the brunt of this project. Should there be a special event during this construction, what if any allowances will be made with regards to safety & traffic? I think this may cover most of my concerns. I’m quite certain that I am not the only person nearby who is having these same concerns. Please don’t get me wrong, we absolutely “Love”The Living Desert as we have lived here over 30 years. We are just concerned what all these needed additions for The Living Desert will create for nearby residents. Thanks so much, Dianna Ploeger From:Nick Melloni To:Melinda Gonzalez Cc:Rosie Lua; Richard Cannone Subject:FW: Portola turn lane Date:Tuesday, July 5, 2022 2:00:06 PM Melinda, I have received an additional comment from a resident of Corsican Villas regarding the Living Desert expansion. Can this be forwarded to the Planning Commission as well? Nick Melloni Associate Planner Ph: 760.346.0611 Direct: 760.776.6479 nmelloni@cityofpalmdesert.org From: Lori Gavitt <lg92260@yahoo.com> Sent: Tuesday, July 5, 2022 1:47 PM To: Nick Melloni <nmelloni@cityofpalmdesert.org> Subject: Portola turn lane Good afternoon Mr. Melloni, I'm writing regarding the notice I received from City of Palm Desert for The Living Desert's (TLD) planned expansion. I am a property owner at neighboring Corsican Villas since 1989 and a year round resident since 1983. I work at The Reserve Club, also a neighboring property. I travel from home to work and back and have found it increasingly dangerous at times. There are no turn arrows in the middle lane. Depending on the traffic entering TLD, slowing or stopping to turn into community is dependent on who enters the middle lane first. Or it requires me to stop in regular travel lane and traffic coming down the hill is coming at 40-50mph. Exiting Corsican Villas to the north is also at time increasingly difficult. Although generally the vehicles turning into TLD are slowing and occasionally allow entrance to Portola, again, traffic traveling down the hill from the south are coming quickly. I'm inquiring if there will be any safety changes to the situation with the new expansion? Thank you, Lori Gavitt (760)831-4816 lgavitt@thereserveclub.com June 28, 2022 Scott Sweeney 73687 Picasso Dr Palm Desert, CA 92211 City of Palm Desert 73-510 Fred Waring Dr. Palm Desert, CA 92260 Re: City of Palm Desert Public Hearing Notice — Case #: PP/CUP22-002 To Whom It May Concern: My name is Scott Sweeney and I have been a resident of Palm Desert for the past eight years, in The Gallery which is off Dolce and Cortesia Way. I am also a minister in the Desert Cities Church of Christ. My wife Danielle and I are in support of the 176 unit affordable apartment development. We feel that this is an appropriate use of the space that fits with our area. We are also in support of the idea of affordable housing as a way to help our fellow citizens have access to the schools and benefits of our amazing city. Feel free to contact me with any questions or comments. Thanks for your consideration, /Jco'`v. ��Fnrw- Scott P. Sweeney Tel. 714-931-5464 Scottsweeney2010@yahoo.com