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Home My WebLink AboutRes No. 2913 PP25-006 Portola SpringsPLANNING COMMISSION RESOLUTION NO. 2913 A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF PALM DESERT, CALIFORNIA, APPROVING A PRECISE PLAN FOR THE DEVELOPMENT OF A 156 UNIT SINGLE-FAMILY RESIDENTIAL COMMUNITY LOCATED AT THE SOUTHWEST CORNER OF FRANK SINATRA DRIVE AND PORTOLA AVENUE AND ADOPTING AN ADDENDUM TO THE PREVIOUSLY APPROVED INITIAL STUDY AND MITIGATED NEGATIVE DECLARATION PURSUANT TO THE CALIFORNIA ENVIRONMENTAL QUALITY ACT (CEQA) AND FINDING THE PROJECT EXEMPT FROM CEQA PURSUANT TO STATE CEQA GUIDELINES SECTION 15183 CASE NO. PP/EA 25-0006 WHEREAS, Blue Fern West (“Applicant”), submitted a Precise Plan and Addendum to the 2022 Initial Study/Mitigated Negative Declaration (SCH #2022120165) for the Frank Sinatra and Portola Project to construct 156 single family residential units on approximately 18.3 acres, including onsite circulation, utility infrastructure, stormwater facilities, lighting, and open space areas. The project is located South of Frank Sinatra Drive and west of Portola Avenue on APN 620-400-030 & 620-400-031 (“Project”); and WHEREAS, the Project site is within the PR-22 zoning district, and is designated as Town Center Neighborhood by the Palm Desert General Plan; and WHEREAS, the proposed Project establishes site layout, minimum lot sizes, circulation, recreation and open space areas; and WHEREAS, for approval of the home design and development, the Project would need to apply for subsequent Precise Plan(s) applications to establish development standards, including setbacks and height, and architecture, including landscaping, consistent with the conditions of approval listed herein; and WHEREAS, the proposed Project conforms to the General Plan land use designation for Town Center Neighborhood and the development standards listed in the City’s Zoning Ordinance for the PR-22 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 Project; and WHEREAS, the Project has been reviewed in compliance with the 2024 Local Guidelines for Implementing the California Environmental Quality Act for the City of Palm Desert (Resolution No. 2024-035), and, pursuant to Section 15164 of the CEQA Guidelines, an Addendum to the previously approved Initial Study and Mitigated Negative Declaration (IS/MND) was prepared and considered to address changes to the Project, based upon which it was determined that no new significant environmental impacts would occur and that no previously identified impacts would be substantially more severe than those analyzed in the approved IS/MND; and Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 2 WHEREAS, the Planning Commission of the City of Palm Desert, California, did on the 3rd day of February, open a duly noticed public hearing on the request by the Applicant regarding the above noted Project, which public hearing was continued to a date certain of February 17th; and WHEREAS, the Planning Commission of the City of Palm Desert, California, did on the 17th day of February continue a previously opened public hearing to consider the request by the Applicant for approval of the above noted Project request; and WHEREAS, pursuant to CEQA Guidelines Section 15183, projects that are consistent with an adopted General Plan for which an EIR has been certified do not require additional environmental review except to address impacts that are peculiar to the project or site and were not analyzed as part of the General Plan EIR; and WHEREAS, the Planning Commission finds that the Project does not result in any new significant environmental effects or a substantial increase in the severity of impacts previously identified in the General Plan EIR, and that all potential impacts are either: • Adequately addressed in the General Plan EIR, or • Mitigated through compliance with City standards, adopted mitigation measures, and conditions of approval; and WHEREAS, the IS/MND Addendum and supporting technical studies constitute substantial evidence in the record demonstrating that the Project qualifies for CEQA streamlining pursuant to CEQA Guidelines Section 15183; 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. Findings on Precise Plan. Under Palm Desert Municipal Code Section 25.72.030(E), the findings for the PP25-0006 are the following: 1. The proposed location of the Precise Plan is in accord with the objectives of this title and the purpose of the district in which the site is located. Project Compliance: Yes. It is the purpose of the PR district to provide for flexibility in development, creative and imaginative design, and the development of parcels of land as coordinated projects involving a mixture of residential densities and housing types, and community facilities. The PR district is further intended to provide for the optimum integration of urban and natural amenities within developments. The PR district is also established to give a land developer Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 3 assurance that innovative and unique land development techniques will be given reasonable consideration for approval and to provide the City with assurances that the completed project will contain the character envisioned at the time of approval. 2. The proposed location of the Precise Plan under which it would be operated or maintained will not be detrimental to the public health, safety, or welfare, or be materially injurious to properties or improvements in the vicinity. Project Compliance: Yes. The Project has been reviewed in accordance with all applicable requirements of the PR-22 Zoning Ordinance, as well as engineering, building, fire safety, and utility regulations, to ensure compliance with all relevant safety and usability standards. The Project was found to not be detrimental to the health, safety, or welfare of the public, nor will it be materially injurious to the properties in the vicinity. The Project provides setbacks from adjacent properties that meet the standards of the PR-22 zoning district. 3. The proposed Precise Plan use will comply with each of the applicable provisions of this title, except for approved variances or adjustments. Project Compliance: Yes. The proposed development conforms with all applicable standards of the Palm Desert Municipal Code, including all standards of the PR- 22 zoning designation. The Project conforms with all applicable development standards. Approval of the home design and development, the Project would need to apply for subsequent Precise Plan(s) applications to establish development standards, including setbacks and height, and architecture, including landscaping, consistent with the conditions of approval listed herein. This can be established per single or multiple planning areas identified on TTM 39307. Per Palm Desert Municipal Code section 25.10.050(B)(14), two-story, single-family detached buildings shall be setback a minimum of 100 feet. The Commission may waive this requirement when adjacent developments are planned simultaneously. The Applicant has submitted applications for a development directly abutting this west perimeter, as the same ownership, and requested to meet the allowance of two- story homes. 4. The proposed conditional use complies with the goals, objectives, and policies of the City’s General Plan Project Compliance: Yes. The proposed use complies and is consistent with the site’s Town Center Neighborhood land use designation as outlined by the Palm Desert General Plan. The Project provides a single family housing and aligns with the surrounding neighborhood. The Project meets objective design standards and incorporates drought-tolerant landscaping throughout the site, enhancing sustainability and reducing water consumption in accordance with the City’s planning and environmental goals. The following General Plan Policies are implemented with this Project: Land Use Policy 3.15 – The Project provides on-site recreational open space as required by the General Plan. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 4 Land Use Policy 3.16 – The Project provides single family residential units at a scale and density consistent with the surrounding uses and satisfy the City’s objective for transitional development. Land Use Policy 3.20 – The Project enhances and preserves the characteristics of the existing surrounding neighborhoods. SECTION 3. CEQA. The Planning Commission finds that the Project has been reviewed in compliance with the 2024 Local Guidelines for Implementing the California Environmental Quality Act (CEQA) for the City of Palm Desert (Resolution No. 2024-035). Pursuant to Section 15164 of the CEQA Guidelines, an Addendum to the previously approved Initial Study and Mitigated Negative Declaration (IS/MND) was prepared and considered to address changes to the Project. Based on the Addendum, it was determined that no new significant environmental impacts would occur and that no previously identified impacts would be substantially more severe than those analyzed in the approved IS/MND. The Planning Commission hereby adopts the Addendum to the approved Mitigated Negative Declaration and the Project qualifies for CEQA streamlining pursuant to Section 15183, and the City may rely on the existing environmental record to support approval of the Project. The City shall file the appropriate Notice of Determination and/or Notice of Exemption within five (5) working days in accordance with CEQA. SECTION 4. Project Approval. The Planning Commission hereby approves the Addendum to the Mitigated Negative Declaration as identified in Exhibit A, and approves PP/EA 25-0006, subject to the conditions of approval identified in Exhibit B. SECTION 5. 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. Rosie Lua, the Secretary to the Palm Desert Planning Commission, is the custodian of the record of proceedings. SECTION 6. 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. ADOPTED ON February 17, 2026. LINDSAY HOLT CHAIRPERSON ATTEST: ROSIE LUA SECRETARY Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 5 I, Rosie Lua, Secretary of the City of Palm Desert Planning Commission, hereby certify that Resolution No. 2913 is a full, true, and correct copy, and was duly adopted at a regular meeting of the Planning Commission of the City of Palm Desert on February 17, 2026, by the following vote: AYES: COLLUM, GREENWOOD, HOLT, MEYERHOFF, NICKERSON NOES: NONE ABSENT: NONE ABSTAIN: NONE RECUSED: NONE IN WITNESS WHEREOF, I have hereunto set my hand and affixed the official seal of the City of Palm Desert, California, on February 26, 2026. ROSIE LUA SECRETARY Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 6 EXHIBIT A ADDENDUM TO THE MITIGATED NEGATIVE DECLARATION Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C SCH NO. 2022120165 Addendum to the Frank Sinatra and Portola Multifamily Development Initial Study/Mitigated Negative Declaration Portola Springs Residential Development Project November 2025 Prepared for: BLUE FERN WEST LLC 18300 Redmond Way, Suite 120 Redmond, Washington 98052 Contact: Kim Molina Prepared by: 225 S Lake Avenue, Suite M-210 Pasadena, California 91101 Contact: Nicole Cobleigh Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C 18192.02 i NOVEMBER 2025 Table of Contents SECTION PAGE Acronyms and Abbreviations ............................................................................................................................................... iii 1 Introduction .................................................................................................................................................................. 1 1.1 Background and Overview ..................................................................................................................... 1 1.2 Project Location ........................................................................................................................................... 1 1.3 Environmental Setting ............................................................................................................................... 2 1.4 California Environmental Quality Act Compliance ............................................................................. 2 1.4.1 Use of an Addendum ................................................................................................................. 2 1.4.2 Incorporation by Reference ....................................................................................................... 3 1.4.3 Addendum Process and Availability .................................................................................... 3 2 Project Description ..................................................................................................................................................... 5 2.1 Project Summary from 2022 IS/MND .................................................................................................. 5 2.2 Modified Project Changes ......................................................................................................................... 5 2.3 Project Approvals ......................................................................................................................................... 6 3 Environmental Checklist .......................................................................................................................................... 7 3.1 Aesthetics ................................................................................................................................................... 10 3.2 Agriculture and Forestry Resources .................................................................................................... 14 3.3 Air Quality .................................................................................................................................................... 17 3.4 Biological Resources ............................................................................................................................. 22 3.5 Cultural Resources ................................................................................................................................... 28 3.6 Energy .......................................................................................................................................................... 30 3.7 Geology and Soils ................................................................................................................................... 33 3.8 Greenhouse Gas Emissions ............................................................................................................... 39 3.9 Hazards and Hazardous Materials ..................................................................................................... 41 3.10 Hydrology and Water Quality ................................................................................................................. 46 3.11 Land Use and Planning ........................................................................................................................ 53 3.12 Mineral Resources ...................................................................................................................................... 55 3.13 Noise ............................................................................................................................................................ 56 3.14 Population and Housing ......................................................................................................................... 60 3.15 Public Services ......................................................................................................................................... 62 3.16 Recreation .................................................................................................................................................. 65 3.17 Transportation ........................................................................................................................................... 67 3.18 Tribal Cultural Resources ....................................................................................................................... 70 3.19 Utilities and Service Systems ................................................................................................................ 72 Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 ii NOVEMBER 2025 3.20 Wildfire ......................................................................................................................................................... 76 3.21 Mandatory Findings of Significance ................................................................................................... 79 4 Addendum Conclusion ......................................................................................................................................... 83 5 References and Preparers.................................................................................................................................... 85 5.20 References Cited ...................................................................................................................................... 85 5.21 List of Preparers ........................................................................................................................................ 86 APPENDICES A Updated Geotechnical Report, March 2025 B Biological Resources Technical Report, August 2025 C Cultural Resources Constraints Analysis, August 2025 D Phase I Environmental Site Assessment, January 2025 E Preliminary Hydrology Report, August 2025 F Site Access and Vehicle Miles Traveled Analysis,November 2025 G Air Quality, Greenhouse Emissions, and Energy Assessment, November 2025 H Noise and Vibration Technical Memorandum, November 2025 I Assembly Bill 52 Consultation, 2025 FIGURES 1 Project Location ............................................................................................................................................87 2 Existing General Plan Land Use Designation ...............................................................................................89 3 Existing Zoning .............................................................................................................................................. 91 4 Site Plan ........................................................................................................................................................93 Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C 18192.02 iii NOVEMBER 2025 Acronyms and Abbreviations Acronym/Abbreviation Definition AB Assembly Bill AFY acre-feet per year APN Assessor’s Parcel Number AQMP Air Quality Management Plan BMP best management practice CalEEMod California Emissions Estimator Model CALGreen California Green Building Standards Code CARB California Air Resources Board CAL FIRE California Department of Forestry and Fire Protection CBC California Building Code CEQA California Environmental Quality Act CGP Construction General Permit City City of Palm Desert CMP Congestion Management Plan CNDDB California Natural Diversity Database CNEL Community Noise Equivalent Level CNPS California Native Plant Society CO2e Carbon dioxide equivalent CVGB Coachella Valley Groundwater Basin CVMSHCP Coachella Valley Multiple Species Habitat Conservation Plan CVWD Coachella Valley Water District CVWMP Coachella Valley Water Management Plan CWA Clean Water Act dBA A-weighted decibels DSUSD Desert Sands Unified School District du/ac dwelling units per acre DWA Desert Water Agency DWR California Department of Water Resources EIR Environmental Impact Report EPA U.S. Environmental Protection Agency FEMA Federal Emergency Management Agency GHG greenhouse gas GSAs Groundwater Sustainability Agencies HVAC heating, ventilation, and air conditioning IS/MND Initial Study/Mitigated Negative Declaration NAHC Native American Heritage Commission NPDES National Pollutant Discharge Elimination System mgd million gallons per day MM mitigation measure MS4 Municipal Storm Sewer System Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 iv NOVEMBER 2025 Acronym/Abbreviation Definition MT metric ton RCFD Riverside County Fire Department RCWMD Riverside County Waste Management Department RIVTAM Riverside Transportation Analysis Model ROW right-of-way RUWMP Regional Urban Water Management Plan SCAQMD South Coast Air Quality Management District SCE Southern California Edison SFHA Special Flood Hazard Area SGMA Sustainable Groundwater Management Act SoCalGas Southern California Gas Company SWPPP Stormwater Pollution Prevention Plan TAZs Transportation Analysis Zones TUMF Transportation Uniform Mitigation Fees USGS U.S. Geological Survey VMT vehicle miles traveled WQMP Water Quality Management Plan Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C 18192.02 1 NOVEMBER 2025 1 Introduction This Addendum to the 2022 Initial Study/Mitigated Negative Declaration (2022 IS/MND) for the Frank Sinatra and Portola Multifamily Development Project (Original Project) (SCH #2022120165) has been prepared for the City of Palm Desert (City) in accordance with Section 15164 of the California Environmental Quality Act (CEQA) Guidelines. This Addendum, for the Portola Springs Multifamily Residential Development Project (Modified Project), modifies the 2022 IS/MND1 and analyzes the effects of the proposed changes to the Original Project in Section 3, Environmental Checklist. The City is the Lead Agency for the environmental review of this Modified Project. The 2022 IS/MND and supporting technical studies are available to the public for review at the offices of the City of Palm Desert Development Services Department, at 73510 Fred Waring Drive, Palm Desert, California 92260. This section discusses the project background and overview, location, and environmental setting, as well as provides an overview about the use of an addendum when complying with CEQA. A detailed description of the Modified Project is provided in Section 2, Project Description, and an analysis of potential environmental effects of the Modified Project due to the proposed changes to the Original Project is provided in Section 3, Environmental Checklist. Section 4, Addendum Conclusion, summarizes the conclusions of this Addendum. 1.1 Background and Overview The Project site is located at the southwest corner of the intersection of Frank Sinatra Drive and Portola Avenue in the northwestern portion of the City and is included in the City’s General Plan area (Figure 1, Project Location). The City’s existing General Plan Land Use map identifies the Project site as Town Center Neighborhood and the City’s current zoning for the Project site is Planned Residential (P.R.22) (City of Palm Desert 2016a; City of Palm Desert 2023). In 2022, the City prepared the 2022 IS/MND for the Frank Sinatra and Portola Multifamily Development Project to allow for the construction of a new residential community consisting of 13, three -story buildings and up to 402 residential units as well as the construction of various amenities and site improvements on approximately 18.3 acres of vacant land. This Addendum, prepared for the Modified Project, proposes modifications to the 2022 IS/MND that are analyzed herein to evaluate the potential environmental impacts of the proposed modifications to the 2022 IS/MND to construct 156 single-family residential lots, utility connections, landscaping, and associated site improvements. These changes to the Original Project are defined as the “Modified Project” as detailed in this Addendum. The Modified Project description for this Addendum is detailed further below under Section 2, Project Description. 1.2 Project Location The City is located in the central portion of Riverside County (Figure 1, Project Location). On a regional basis, the City is accessible via State Route 111 (SR-111), State Route 74 (SR-74), and Interstate 10 (I-10). Cities surrounding the City of Palm Desert include the City of Rancho Mirage and Cathedral City to the west, the City of Indian Wells, the City of Indio and the unincorporated community of Bermuda Dunes to the east, the City of La Quinta to the southeast, and unincorporated Riverside County to the northeast. The Project site for the Modified Project totals approximately 17.6 acres and is located at the southwest corner of Frank Sinatra Drive and Portola Avenue in the City (Assessor’s Parcel Numbers [APNs] 620-400-030-5 and 620- 1 The 2022 IS/MND prepared for Frank Sinatra and Portola Multifamily Development Project is located online at https://ceqanet.lci.ca.gov/2022120165 Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 2 NOVEMBER 2025 400-031-6). Regional access to the Project site is provided via SR-111, SR-74, and I-10. Local access to the Project site is provided via Frank Sinatra Drive and Portola Avenue. 1.3 Environmental Setting According to the Updated Geotechnical Report prepared for the Modified Project (Appendix A), the City is located in central Riverside County where it is generally characterized by a relatively flat to gently sloping topography, which ranges between approximately 255 to 285 feet above sea level. The General Plan land use designation for the Project site is Town Center Neighborhood, and the current zoning is Planned Residential (P.R.22) (Figure 2, Existing General Plan Land Use Designation; Figure 3, Existing Zoning Designation). The Town Center Neighborhood designation allows for a moderate to higher-intensity neighborhood development that features a variety of housing choices, walkable streets, and mixed uses at a density ranging between 7 and 40 dwelling units per acre (du/ac), while the Planned Residential zone allows for flexibility in residential development that features mixed densities, mixed housing types, and community facilities (City of Palm Desert 2016, 2023, 2025). As stated in the City’s zoning map, the numerical suffix after the “P.R.” symbol represents the planned density per acre; therefore, the Project site’s Planned Residential zone allows for a maximum project density of 22 du/ac (City of Palm Desert 2023). The Modified Project is proposed with a gross density of 9.2 du/ac, consistent with both the Town Center Neighborhood General Plan designation, and the site’s Planned Residential (P.R.22) zone. Existing Project Site The Project site, located on the southwest corner of Frank Sinatra Drive and Portola Avenue, is a disturbed, vacant lot with a utility easement observed along the western portion of the Project site and with power lines that extend along the western boundary in a north-south direction (Appendix A). Topographically, the Project site and surrounding areas are relatively flat. The Project site contains minimal vegetation; however, low bushes are scattered throughout the site. Surrounding Land Uses Surrounding land uses include residential development on all sides, golf courses to the east, west, and northwest, and vacant land zoned as Planned Residential, P.R.22 and PR.18, respectively, to the west and northeast of the Project site (see Figure 2 and Figure 3). 1.4 California Environmental Quality Act Compliance 1.4.1 Use of an Addendum Pursuant to CEQA Guidelines Section 15164, an addendum to a certified Environmental Impact Report (EIR) or an adopted Negative Declaration may be prepared if only minor technical changes or additions are necessary and none of the conditions described in CEQA Guidelines Section 15162 that call for preparation of a subsequent EIR or Negative Declaration have occurred. Under CEQA Guidelines Section 15162(a), when an EIR has been certified or a negative declaration for a project has been prepared, no subsequent EIR or negative declaration shall be Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C 18192.02 3 NOVEMBER 2025 ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT prepared for that project unless the lead agency (the City) determines, on the basis of substantial evidence, one or more of the following: Substantial changes are proposed in the project which will require major revisions of the previous EIR or negative declaration due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects; Substantial changes occur with respect to the circumstances under which the project is undertaken which will require major revisions of the previous EIR or negative declaration due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects; or New information of substantial importance, which was not known and could not have been known with the exercise of reasonable diligence at the time the EIR was certified as complete or the negative declaration was adopted, shows any of the following: A. The project will have one or more significant effects not discussed in the previous EIR or negative declaration; B. Significant effects previously discussed will be substantially more severe than shown in the previous EIR or negative declaration; C. Mitigation measures or alternatives previously found not to be feasible would in fact be feasible, and would substantially reduce one or more significant effects of the project, but the project proponents decline to adopt the mitigation measures or alternatives; or D. Mitigation or alternatives which are considerably different from those analyzed in the previous EIR or negative declaration would substantially reduce one or more significant effects on the environment, but the project proponents decline to adopt the mitigation measure or alternative. 1.4.2 Incorporation by Reference The CEQA Guidelines, Section 15150, permit and encourage that an environmental document incorporate, by reference, other documents that provide relevant data. The 2022 IS/MND (City of Palm Desert 2022), the City of Palm Desert General Plan (City of Palm Desert 2016a), the City of Palm Desert General Plan EIR (City of Palm Desert 2016b), and the Palm Desert Code of Ordinances (City of Palm Desert 2025), which are all herein incorporated by reference pursuant to CEQA Guidelines, Section 15150, are available for review, as follows: City of Palm Desert Development Services Department Planning Division 73510 Fred Waring Drive Palm Desert, California 92260 1.4.3 Addendum Process and Availability Per CEQA Guidelines, Section 15164(c), an Addendum need not be circulated for public review but can be included in or attached to the final EIR or [Mitigated] Negative Declaration. CEQA Guidelines Section 15164(d) states the decision-making body shall consider the addendum with the Final EIR or adopted [Mitigated] Negative Declaration prior to making a decision on the project. Once adopted, the addendum is placed in the City’s Administrative Record, along with the original EIR or [Mitigated] Negative Declaration, thus completing the CEQA process. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 4 NOVEMBER 2025 INTENTIONALLY LEFT BLANK Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C 18192.02 5 NOVEMBER 2025 2 Project Description 2.1 Project Summary from 2022 IS/MND The 2022 IS/MND evaluated the Frank Sinatra and Portola Multifamily Development, which allowed for the construction of a new residential community and amenities consisting of 13, three -story buildings and up to 402 residential units, a clubhouse, fitness center, community pools, 6.85 acres of landscape and retention areas (open space), internal paved areas, landscaping, and 671 parking stalls on approximately 18.3 acres of vacant land. 2.2 Modified Project Changes As described in Section 1.1, Background and Overview, this Addendum evaluates the potential environmental impacts of the proposed modifications to the 2022 IS/MND. This Addendum, prepared for the “Modified Project,” proposes to allow for the creation of 156 single-family residential lots at the Project site instead of the originally proposed 13, three-story multifamily apartment buildings containing up to 402 units. The Modified Project removes the previously proposed clubhouse and the fitness center and includes some slight changes to the traffic flow of the proposed Project site access points and associated Project site improvements. The Modified Project would also remove 4.12 acres of open space. The Modified Project involves the creation of a 156-lot single-family residential development, and associated improvements (Figure 4, Site Plan). The Modified Project would provide alley-loaded and 6-pack cluster single-family residences at heights of one- to two-stories. The Modified Project would also construct stormwater retention infrastructure, including three retention basins, and would include utility connections, landscaping and open space, and internal roadways. A total of 2.73 acres of common open space is proposed throughout the Project site, including a larger 0.29-acre recreation area at the center of the Project site. Circulation and Parking The Project site would continue to be accessible via three entries (see Figure 4, Site Plan). There would be two entrances to access the Project site from Portola Avenue, and one entrance to access the Project site from Frank Sinatra Drive. The Modified Project’s proposed internal roadways would provide internal circulation throughout the Project site. All driveways would be right-turn in and right-turn out. Parking would be provided within garages attached to each home, along with driveway and street parking. On -Site Improvements The Modified Project would also include improvements to Frank Sinatra Drive and Portola Road along street frontages, including new sidewalks and sidewalk landscaping. In conformance with the City’s desert flora landscape design manual, a variety of trees, shrubs, plants, and land covers would be planted in the landscaped areas proposed throughout the Project site. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 6 NOVEMBER 2025 Utility and Infrastructure Improvements The Project site would connect to existing domestic water, sanitary sewer, and dry utility infrastructure facilities located adjacent to the site. The Modified Project would also include construction of three storm water retention basins, two along the western edge of the Project site and one at the southern boundary of the Project site, which would abut Portola Avenue. Project Design Feature (PDF) The following project design feature (PDF) has been incorporated into the project description to ensure the requests of Agua Caliente Band of Cahuilla Indians (Agua Caliente) are implemented as part of the Modified Project. PDF TCR-1: An Agua Caliente Band of Cahuilla Indians (Agua Caliente) Native American Cultural Resource Monitor shall be present during any ground disturbing construction activities for the Modified Project. Should buried cultural materials be identified, a management plan shall be developed in consultation with Agua Caliente, a Qualified Archaeologist, and the City. In addition, any discovered Tribal cultural material will be reburied on-site, if feasible. The City has also agreed to include these requests by Agua Caliente as a condition of approval for issuance of a grading permit for the Modified Project. 2.3 Project Approvals The Modified Project would require a number of discretionary permits and approvals from the City, listed below: ▪ A Financing Map - Tentative Tract Map (TTM) 39306 ▪ Subdivision Map - TTM 39307 ▪ Site Plan Review A public agency, other than the lead agency, that has discretionary approval over a project is known as a “responsible agency,” as defined by State CEQA Guidelines (14 CCR 15000 et seq.). There are no other public agencies that have discretionary authority over the Modified Project. Other permits and approvals are required for implementation that are not subject to discretionary review but nevertheless require actions by the applicant and/or the City to obtain the necessary approvals to implement the Modified Project. Other permits and approvals required, and their respective agency administrators, are listed below: ▪ City of Palm Desert - Building Permits, Grading Permits, Encroachment Permits, and Demolition Permits, etc. ▪ Colorado River Regional Water Quality Control Board – National Pollutant Discharge Elimination System (NPDES) Permit ▪ Riverside County Fire Department – Plan approval ▪ Riverside County Sheriff’s Department – Plan approval ▪ Utility providers – Utility connection permits Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C 18192.02 7 NOVEMBER 2025 3 Environmental Checklist 1. Project title: Portola Springs Residential Development Project 2. Lead agency name and address: City of Palm Desert 73510 Fred Waring Drive Palm Desert, California 92260 3. Contact person and phone number: Carlos Flores, Principal Planner, Planning Department City of Palm Desert 73510 Fred Waring Drive Palm Desert, California 92260 760.346.0611 cflores@palmdesert.gov 4. Project location: The Modified Project is located at the southwest corner of Frank Sinatra Drive and Portola Avenue in the City of Palm Desert (APNs 620-400-030-5 and 620-400-031-6). 5. Project sponsor’s name and address: Blue Fern West LLC 18300 Redmond Way, Suite 120 Redmond, Washington 98052 6. General plan designation: Town Center Neighborhood 7. Zoning: Planned Residential (P.R.22) 8. Description of project. (Describe the whole action involved, including but not limited to later phases of the project, and any secondary, support, or off-site features necessary for its implementation. Attach additional sheets if necessary): The Modified Project proposes to create a 156-lot single-family residential development, and associated improvements, including stormwater infrastructure, utilities, landscaping, internal roadways, and approximately 2.74 acres of open space throughout the Project site. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 8 NOVEMBER 2025 9. Surrounding land uses and setting: Briefly describe the project’s surroundings: The surrounding area is largely characterized by residential development, golf courses, and vacant land. Refer to Section 2.2, Environmental Setting, of this Addendum. 10. Other public agencies whose approval is required (e.g., permits, financing approval, or participation agreement): ▪ Riverside County Fire Department – Plan approval ▪ Riverside County Sheriff’s Department – Plan approval ▪ Utility providers – Utility connection permits 11. Have California Native American tribes traditionally and culturally affiliated with the project area requested consultation pursuant to Public Resources Code section 21080.3.1? If so, is there a plan for consultation that includes, for example, the determination of significance of impacts to tribal cultural resources, procedures regarding confidentiality, etc.? Refer to Section 3.18 (Tribal Cultural Resources) for details. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 9 NOVEMBER 2025 Evaluation of Environmental Impacts Pursuant to Section 15162 of the CEQA Guidelines, the lead agency shall not prepare a subsequent or supplemental EIR or negative declaration unless the agency determines that one or more of the following conditions are met for the project: Substantial project changes are proposed that will require major revisions of the previous EIR or negative declaration due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects; Substantial changes would occur with respect to the circumstances under which the project is undertaken that require major revisions to the previous EIR or negative declaration due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects; or New information of substantial importance that was not known and could not have been known with the exercise of reasonable diligence at the time the previous EIR was certified or the negative declaration was adopted shows any of the following: a. The project will have one or more significant effects not discussed in the previous EIR or negative declaration; b. Significant effects previously examined will be substantially more severe than identified in the previous EIR; c. Mitigation measures or alternatives previously found not to be feasible would in fact be feasible, and would substantially reduce one or more significant effects of the project, but the project proponent declines to adopt the mitigation measures or alternatives; or d. Mitigation measures or alternatives that are considerably different from those analyzed in the previous EIR would substantially reduce one or more significant effects on the environment, but the project proponent declines to adopt the mitigation measures or alternatives. Where none of the conditions specified in Section 15162 are present, the lead agency cannot prepare a subsequent or supplemental EIR (CEQA Guidelines Section 15162(a)), but may prepare a negative declaration, an addendum, or no further CEQA documentation. Section 15164 of the CEQA Guidelines states that an addendum to a mitigated negative declaration shall be prepared “if only minor technical changes or additions are necessary or none of the conditions described in Section 15162 calling for the preparation of a subsequent EIR or negative declaration have occurred.” In accordance with the CEQA Guidelines, the City has determined that an Addendum to the 2022 IS/MND is the appropriate environmental document for the Modified Project. This Addendum reviews the changes proposed by the Modified Project and any pertinent changes to the circumstances under which the Modified Project is undertaken that have occurred since the 2022 IS/MND was certified. It also reviews any new information of substantial importance that was not known and could not have been known with exercise of reasonable diligence at the time that the 2022 IS/MND was certified. This examination includes an analysis of the provisions of Section 15162 of the CEQA Guidelines and their applicability to the Modified Project. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 10 NOVEMBER 2025 3.1 Aesthetics I. AESTHETICS – Except as provided in Public Resources Code Section 21099, would the project: a) Have a substantial adverse effect on a scenic vista? b) Substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and historic buildings within a state scenic highway? c) In non-urbanized areas, substantially degrade the existing visual character or quality of public views of the site and its surroundings? (Public views are those that are experienced from publicly accessible vantage point). If the project is in an urbanized area, would the project conflict with applicable zoning and other regulations governing scenic quality? d) Create a new source of substantial light or glare which would adversely affect day or nighttime views in the area? 2022 IS/MND Analysis Summary Potential impacts related to aesthetics were analyzed in the 2022 IS/MND on pages 8 through 14. Potential impacts on scenic vistas and resources, degradation of the existing visual character or quality of the site, and sources of light and glare were evaluated. The 2022 IS/MND concluded that aesthetic impacts to scenic vistas, scenic resources within a State scenic highway, degradation of existing visual character or quality, and to sources of light and glare would be less than significant. Modified Project Analysis a) Would the project have a substantial adverse effect on a scenic vista? No New Impact. As discussed in the 2022 IS/MND, the undeveloped, vacant Project site does not contain any characteristics or physical features that contribute to a unique scenic vista and there are no salient topographic features or other natural visual landmarks on the Project site. The Palm Desert General Plan states that the hillsides and mountains surrounding the Coachella Valley are considered visual resources (City of Palm Desert 2016a). The San Jacinto Mountains, the San Gorgonio Mountains, the San Bernardino Mountains, Little San Bernardino Mountains and the Indio Hills, and the Santa Rosa Mountains create panoramic mountains views in the Coachella Valley (City of Palm Desert 2022). The 2022 IS/MND states New Potentially Significant Impact New Mitigation No New is Required Impact Reduced Impact Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 11 NOVEMBER 2025 that views of the San Jacinto Mountains to the west and of the Santa Rosa Mountains to the south are available from the Project site. Base views of the mountains are obstructed by existing structures and landscaping (City of Palm Desert 2022). The 2022 IS/MND found that development of the vacant Project site would partially obstruct views of the San Jacinto Mountains to the west when viewed from Portola Avenue and would partially obstruct views of the Santa Rosa Mountains to the south when viewed from Frank Sinatra Drive. The 2022 IS/MND analyzed views from Frank Sinatra Drive and the existing single -family homes along Frank Sinatra Drive in detail. The 2022 IS/MND determined that although views of the Santa Rosa Mountains from north of the Project site are primarily unobstructed due to the Project site being vacant, views from the single-family residences to the north of the Project site are primarily obstructed by large transmission/distribution combination utility poles, landscaping, and 6 -foot block walls separating the residences from the road right-of-way (ROW). The 2022 IS/MND found that the top of the three-story buildings may be able to be seen from the residences to the north, but the Original Project would not obstruct views of the mountains since they are distant and already partially obstructed by manmade features. Furthermore, although the 2022 IS/MND determined that construction of the Original Project would partially obstruct pedestrian and motorist views of the Santa Rosa Mountains from along Frank Sinatra Drive, that obstructions would be brief until the motorist or pedestrian passes the Project site. As such, the 2022 IS/MND determined that Original Project impacts to scenic vistas from north of the Project site would be less than significant (City of Palm Desert 2022). The 2022 IS/MND also analyzed views from Portola Avenue in detail. The 2022 IS/MND determined that although construction of the Original Project would partially obstruct pedestrian and motorist views of the San Jacinto Mountains from along Portola Avenue, that obstructions would be brief until the motorist or pedestrian passes the Project site. In addition, it was found that from the existing residential structures east of the Project site, which already have a partially obstructed view west, that the Original Project could partially obstruct base and mid-range views of the mountains to the west. However, peak views would still be available. Impacts to scenic vistas from east of the Project site were determined to be less than significant (City of Palm Desert 2022). Therefore, the 2022 IS/MND determined that the Original Project would comply with the City’s Municipal Code guidelines and would result in less than significant impacts to scenic vistas. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would result in shorter buildings on the Project site that would create a reduced effect relating to obstruction of scenic vistas compared to the impacts analyzed in the 2022 IS/MND. There are no other changed circumstances or new information relating to aesthetics. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Thus, the Modified Project would not result in any new or different impacts to scenic vistas from those previously identified. No further analysis is required. b) Would the project substantially damage scenic resources, including, but not limited to, trees, rock outcroppings, and historic buildings within a state scenic highway? No New Impact. The 2022 IS/MND determined there would be a less-than-significant impact to scenic resources within a State scenic highway as eligible or designated State scenic highways do not currently Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 12 NOVEMBER 2025 exist adjacent to or in the vicinity of the Project site, according to the California Scenic Highway Mapping System (City of Palm Desert 2022). Under existing conditions, there are no eligible or officially designated State scenic highways adjacent to or in the vicinity of the Project site. The nearest eligible highway is State Route (SR-) 111 approximately 2.92 miles southwest of the Project site, and the nearest officially designated highway is SR-74 approximately 3.47 miles southwest of the Project site (Caltrans 2019). As such, there are no changes in conditions, new information, or change of circumstances leading to new or substantially worse significant impacts to a State scenic highway. The Modified Project would not result in new or different impacts as presented within the impact analysis of the 2022 IS/MND. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. c) In non-urbanized areas, would the project substantially degrade the existing visual character or quality of public views of the site and its surroundings? (Public views are those that are experienced from publicly accessible vantage point). If the project is in an urbanized area, would the project conflict with applicable zoning and other regulations governing scenic quality? No New Impact. As discussed in the 2022 IS/MND, the proposed Project site is located within a relatively developed area in the City and is surrounded by existing roadway and utility infrastructure. Areas to the north and south of the Project site are developed with residential communities and golf course areas, while undeveloped lots are located west and northeast of the Project site (City of Palm Desert 2022). California Public Resources Code Section 21071 defines an “urbanized area” as “(a) an incorporated city that meets either of the following criteria: (1) Has a population of at least 100,000 persons, or (2) Has a population of less than 100,000 persons if the population of that city and not more than two contiguous incorporated cities combined equals at least 100,000 persons.” Approximately 51,980 people reside in the City (DOF 2025). The City is surrounded by the unincorporated community of Cahuilla Hills to the south, the cities of Indian Wells and Indio to the east, and the cities of Rancho Mirage and Cathedral City to the west. The City’s existing population in combination with the population of Cathedral City (51,651 residents) and Indio (92,539) totals well over 100,000 persons (DOF 2025). As such, the City is considered to be within an urbanized area. Therefore, a significant impact would occur in the event the Original Project conflicts with applicable zoning and other regulations governing scenic quality. As described in the 2022 IS/MND, the Original Project would be consistent with and visually complimentary to the appearance of existing residential communities in the area and throughout the City. The proposed structures would utilize neutral colors that complement the natural surrounding landscape and desert environment and would utilize external materials such as stone veneer, stucco, and metal trellis. The features and characteristics of the proposed buildings are intended to establish an attractive architectural presence while providing a desirable environment for residents. The Original Proje ct was determined to comply with all City standards relating to scenic quality including the Project site’s land use and zoning designations and therefore would not conflict with applicable zoning and other regulations governing scenic quality (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to applicable zoning governing scenic quality would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 13 NOVEMBER 2025 Modified Project would continue to not conflict with applicable zoning of the Project site nor with other regulations governing scenic quality. The Modified Project would continue to adhere to all City standards relating to scenic quality. There are no changed circumstances or new information relating to aesthetics. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Implementation of the Modified Project would not result in any new or different impacts related to applicable zoning governing scenic quality from those identified. No further analysis is required. d) Would the project create a new source of substantial light or glare which would adversely affect day or nighttime views in the area? No New Impact. As discussed in the 2022 IS/MND, development of the vacant Project site would introduce new sources of light and glare, which would consist of low-intensity, wall-mounted, downward- oriented lighting fixtures typically associated with residential communities as well as nighttime lighting for safety purposes that would be installed in accordance with Chapter 24.16 (Outdoor Lighting Requirements) of the City’s Municipal Code. These requirements ensure a minimum uniformity of light coverage, while minimizing light trespass (City of Palm Desert 2022). The 2022 IS/MND determined that the Original Project would also be consistent with the physical character intended for the Town Center Neighborhood uses, per the City’s General Plan. In addition, because the Original Project proposed to use neutral-colored finishes that do not have highly reflective properties or other conditions that would cause substantial daytime or nighttime glare, and because the Original Project included a strategic landscape plan that would screen light sources and building surfaces, impacts were determined to be less than significant (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three -story multifamily apartment buildings and would still include new sources of light and glare. These new sources of light and glare would be visible from development along adjacent roadways and to light-sensitive receptors such as nearby residents and traveling motorists. However, all lighting installed for the Modified Project would be required to comply with the lighting standards identified in the City’s Municipal Code and the Project-specific lighting plan would be subject to review and approval by the City, which would ensure proper design, installation, and operation of all exterior lighting, thereby reducing the potential for glare effects, light spillover onto adjacent properties, and conflicts with adjacent land uses (City of Palm Desert 2022). There are no other changed circumstances or new information relating to aesthetics. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. The Modified Project would not result in any new or different impacts related to light and glare from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 14 NOVEMBER 2025 3.2 Agriculture and Forestry Resources New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact II. AGRICLTURE AND FORESTRY RESOURCES – In determining whether impacts to agricultural resources are significant environmental effects, lead agencies may refer to the California Agricultural Land Evaluation and Site Assessment Model (1997) prepared by the California Dept. Conservation as an optional model to use in assessing impacts on agriculture and farmland. In determining whether impacts to forest resources, including timberland, are significant environmental effects, lead agencies may refer to information compiled by the California Department of Forestry and Fire Protection regarding the state’s inventory of forest land, including the Forest and Range Assessment Project and the Forest Legacy Assessment project; and forest carbon measurement methodology provided in Forest Protocols adopted by the California Air Resources Board. Would the project: a) Convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency, to non-agricultural use? b) Conflict with existing zoning for agricultural use, or a Williamson Act contract? c) Conflict with existing zoning for, or cause rezoning of, forest land (as defined in Public Resources Code section 12220(g)), timberland (as defined by Public Resources Code section 4526), or timberland zoned Timberland Production (as defined by Government Code section 51104(g))? d) Result in the loss of forest land or conversion of forest land to non-forest use? e) Involve other changes in the existing environment which, due to their location or nature, could result in conversion of Farmland, to non- agricultural use or conversion of forest land to non-forest use? 2022 IS/MND Analysis Summary Potential impacts related to agricultural and forestry resources were analyzed in the 2022 IS/MND on page 15. The 2022 IS/MND determined that the Project site does not include any zoning or resources related to agricultural, forestry, or timberland uses, and that there are no lands subject to Williamson Act contracts Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 15 NOVEMBER 2025 that would be affected. The 2022 IS/MND states that the Original Project area is defined as “Other Land,” and surrounding areas are mapped as “Urban and Built-Up Land.” Therefore, the 2022 IS/MND determined that there would be no impact regarding agricultural and forestry resources. Modified Project Analysis a) Would the project convert Prime Farmland, Unique Farmland, or Farmland of Statewide Importance (Farmland), as shown on the maps prepared pursuant to the Farmland Mapping and Monitoring Program of the California Resources Agency, to non-agricultural use? No New Impact. The 2022 IS/MND states that the Project site is located in an urbanized area of the City that does not include any farmland in the vicinity as mapped by the Farmland Mapping and Monitoring Program, including Prime Farmland, Unique Farmland, or Farmland of Statewide Importance designations. The 2022 IS/MND states that the desert area of the Project site is not located on land zoned for or used for agriculture or forest land and is not covered by a Williamson Act contract. Therefore, the 2022 IS/MND determined there would be no impact to agricultural and forestry resources (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to not result in the conversion of farmland to non-agricultural uses. As such, the Modified Project would not create a new or substantially worse significant impact with respect to farmland. Furthermore, there are no changes in circumstances or new information related to agricultural or forestry resources. Therefore, the Modified Project would result in no impacts to farmland, consistent with the 2022 IS/MND. Given this, the Modified Project would not result in any new or different impacts from those previously identified in the 2022 IS/MND. No further analysis is required. b) Would the project conflict with existing zoning for agricultural use, or a Williamson Act contract? No New Impact. The 2022 IS/MND identified that Williamson Act contracts do not exist within the vicinity of the Original Project and that the Project site does not include zoning for agricultural use. As such, there would be no impact (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not create new agricultural zones, nor would it conflict with existing zoning for agricultural use. Additionally, there are no Williamson Act contracts in the vicinity of the Modified Project under existing conditions (DOC 2022). There are no changes in circumstances or new information related to agricultural or forestry resources. Impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and no impact would result from the Modified Project. Therefore, the Modified Project would not result in any new or different impacts from those previously identified in the 2022 IS/MND. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 16 NOVEMBER 2025 c) Would the project conflict with existing zoning for, or cause rezoning of, forest land (as defined in Public Resources Code Section 12220(g)), timberland (as defined by Public Resources Code Section 4526), or timberland zoned Timberland Production (as defined by Government Code Section 51104(g))? No New Impact. The 2022 IS/MND identified that the Project site does not contain land zoned for forestry uses as none exists within the desert area surrounding the Original Project. As such, the 2022 IS/MND determined there would be no impact with respect to zoning for forest land, timberland, or timberland zoned Timberland Production (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The analysis within the 2022 IS/MND is consistent with the impacts associated with the Modified Project. The Modified Project would not create a new or substantially worse significant impact with respect to zoning for forest land, timberland, or timberland zoned Timberland Production. Furthermore, there would be no change in circumstances or new information related to zoning of forest land, timberland, or timberland zoned Timberland Production. The Project site does not contain forest land or timberland, and no conflicts with forest land zoning would occur from the Modified Project. Impacts associated with the Mod ified Project would be consistent with the analysis in the 2022 IS/MND and no impact would occur. Therefore, the Modified Project would not result in any new or different impacts relating to forest land or timberland zoning from those previously identified in the 2022 IS/MND. No further analysis is required. d) Would the project result in the loss of forest land or conversion of forest land to non-forest use? No New Impact. The 2022 IS/MND identified that the Project site and the desert area of the region do not have any land dedicated to or zoned for forestry uses. As such, the 2022 IS/MND identified that there would be no impact (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Project site does not contain forest land or timberland, and no loss of forest land would occur as part of the Modified Project. As such, the analysis within the 2022 IS/MND remains accurate with respect to the Modified Project and no impact would result from the Modified Project. The Modified Project would not create a new or substantially worse significant impact with respect to the loss of forest land or conversion of forest land to non-forest use. Furthermore, there would be no changed circumstances or new information related to the loss of forest land or conversion of forest land to non -forest use. Therefore, the Modified Project would not result in any new or different impacts relating to loss or conversion of forest land from those previously identified. No further analysis is required. e) Would the project involve other changes in the existing environment which, due to their location or nature, could result in conversion of Farmland, to non-agricultural use or conversion of forest land to non-forest use? No New Impact. As discussed in the 2022 IS/MND, the Project site does not have any land dedicated to or zoned for any agricultural or forestry uses. Implementation of the Original Project would not create conflicts involving agricultural or forest zones and would not result in other changes to the existing environment which, due to their location or nature, could result in conversion of farmland or forests, to non- Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 17 NOVEMBER 2025 agricultural or non-forestry use (City of Palm Desert 2022). As such, the 2022 IS/MND determined that no impact would occur. The Modified Project would not create a new or substantially worse significant impact with respect to conversion of Farmland to non-agricultural use or conversion of forest land to non-forest use as none exists on or near the Project site. Neither would there be changed circumstances or new information related to conversion of Farmland, to non-agricultural use or conversion of forest land to non -forest use. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and no impact would occur. Therefore, the Modified Project would not result in any new or different impacts relating to other changes in the environment that could result in the conversion of farmland or forest land from those previously identified. No further analysis is required. 3.3 Air Quality New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact III. AIR QUALITY – Where available, the significance criteria established by the applicable air quality management district or air pollution control district may be relied upon to make the following determinations. Would the project: 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 federal or state ambient air quality standard (including releasing emissions that exceed quantitative thresholds for ozone precursors)? c) Expose sensitive receptors to substantial pollutant concentrations? d) Result in other emissions (such as those leading to odors) adversely affecting a substantial number of people? 2022 IS/MND Analysis Summary Potential impacts related to air quality were analyzed in the 2022 IS/MND on pages 16 through 22 . The 2022 IS/MND evaluated potential impacts relating to whether the Original Project would conflict with or obstruct implementation of an applicable air quality plan, violate any air quality standards or contribute to an existing or projected air quality violation, result in cumulatively considerable increases in criteria air pollutants, expose sensitive receptors to substantial pollutant concentrations, or create objectionable Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 18 NOVEMBER 2025 odors. The 2022 IS/MND determined that impacts relating to cumulatively considerable increases in criteria air pollutants (threshold b) would be potentially significant; however, with mitigation incorporated, all potential air quality impacts were determined to be less than significant. The 2022 IS/MND incorporated the following mitigation measure (MM): MM AQ-1: SCAQMD Rule 403 (403.1 specific to the Coachella Valley): A Dust Control Plan shall be prepared and implemented by all contractors during all construction activities, including ground disturbance, grubbing, grading, and materials import and export. Said plan shall include but not be limited to the following best management practices: ▪ Treated and stabilized soil where activity will cease for at least four consecutive days; ▪ All construction grading operations and earth moving operations shall cease when winds exceed 25 miles per hour; ▪ Water site and equipment morning and evening and during all earth-moving operations; ▪ Operate street-sweepers on impacted paved roads adjacent to site; ▪ Establish and strictly enforce limits of grading for each phase of construction; ▪ Wash off trucks as they leave the project site to control fugitive dust emissions ▪ Cover all transported loads of soils, wet materials prior to transport, provide freeboard (space from the top of the material to the top of the truck) to reduce PM10 and deposition of particulate matter during transportation ▪ Use track-out reduction measures such as gravel pads at project access points to minimize dust and mud deposits on roads affected by construction traffic. Modified Project Analysis a) Would the project conflict with or obstruct implementation of the applicable air quality plan? No New Impact. As discussed in the 2022 IS/MND, the Original Project air quality analysis utilized the most current California Emissions Estimator Model (CalEEMod) at the time to calculate criteria air pollutants and greenhouse gas (GHG) emissions. The air quality analysis found that the unmitigated criteria air pollutant emissions from Original Project construction would not exceed the applicable South Coast Air Quality Management District (SCAQMD) Air Quality Significance Thresholds. As stated in the 2022 IS/MND, dust control measures would be implemented during construction as a standard requirement as part of a City- approved fugitive dust control plan in accordance with SCAQMD Rule 403 and 403.1, as well as City Municipal Code Chapter 24.12; thus, it was determined that construction air quality impacts would be less than significant. Further, the air quality analysis also found that the applicable SCAQMD Air Quality Significance Thresholds would not be exceeded during operation of the Original Project (City of Palm Desert 2022). The 2022 IS/MND also discussed the Original Project’s consistency with SCAQMD’s Consistency Criterion No. 1 and Criterion No. 2 and determined that as it relates to SCAQMD’s Consistency Criterion No. 1, the Original Project would not result in an increase in the frequency or severity of existing air quality violations, or cause or contribute to new violations, or delay the timely attainment of air quality standards or the interim emissions reductions specified in the Air Quality Management Plan (AQMP). As demonstrated by the Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 19 NOVEMBER 2025 analysis within the 2022 IS/MND, the Original Project was determined to not result in emissions levels exceeding the applicable SCAQMD standards, and it was determined that the Original Project would not conflict with SCAQMD Consistency Criterion No. 1. As it relates to SCAQMD Consistency Criterion No. 2, the 2022 IS/MND determined that the Original Project would not exceed the assumptions in the AQMP. As the Original Project was designed in accordance with the City’s land use, zoning, and development standards, the Original Project would not exceed the local land development assumptions and would be consistent with the growth projections identified in the 2016 AQMP (City of Palm Desert 2022). Therefore, the 2022 IS/MND determined that the Original Project would not interfere with the AQMP and impacts relating to conflicts with the applicable air quality plan would be less than significant. The Modified Project would allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Original Project proposed a total of approximately 515,930 square feet between all the proposed buildings, including the club/fitness center, while the Modified Project would allow for approximately 318,000 square feet of single- family homes: a reduction of approximately 197,930 square feet under the Modified Project, which would therefore reduce the overall construction intensity. The Modified Project, which would result in lower density residential development within the same development footprint, would generate 488 fewer residents on site, thereby reducing water and energy consumption and vehicle miles traveled (VMT), and therefore would generate less construction and operational criteria air pollutant emissions. Therefore, air emissions would be less than the levels analyzed for the Originally Project. As demonstrated in Appendix G of this Addendum Air Quality, Greenhouse (GHG) Emissions, and Energy Assessment, the Modified Project would not exceed the applicable South Coast Air Quality Management District (SCAQMD) Air Quality Significance Thresholds for construction or operation without mitigation. The Modified Project would still be required to implement dust control measures in accordance with SCAQMD Rule 403 and 403.1 and City Municipal Code Chapter 24.12. The Modified Project would continue to be designed in accordance with the City’s land use, zoning, and development standards, would not exceed the local land development assumptions featured in the 2022 AQMP, and therefore would not conflict with the AQMP. There would be no change in circumstances or new information relating to conflicts with or obstruction of implementation of the applicable AQMP. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in a less than significant impact. Therefore, the Modified Project would not result in any new or different impacts relating to conflicts with the applicable AQMP from those previously identified. No further analysis is required. b) Would the project result in a cumulatively considerable net increase of any criteria pollutant for which the project region is non-attainment under an applicable federal or state ambient air quality standard? No New Impact. As detailed within the 2022 IS/MND, the Coachella Valley portion of the Salton Sea Air Basin was formerly classified as “Severe-15” nonattainment for the 1997 8-hour ozone national ambient air quality standard with an attainment deadline of June 15, 2019. Over the past 15 years, the air quality in the Valley has steadily improved because of the implementation of emission control measures by SCAQMD and the California Air Resources Board (CARB). However, because SCAQMD could not practically attain the 1997 8-hour standard by the 2019 deadline due to higher ozone levels observed in 2017 and 2018, SCAQMD requested a reclassification that would extend the attainment deadline to June of 2024 (City of Palm Desert 2022). Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 20 NOVEMBER 2025 As discussed in the 2022 IS/MND, the Original Project was determined to result in emissions that would not exceed the applicable SCAQMD regional thresholds for ozone precursors. By complying with the adopted thresholds, the proposed development is also complying with the overall attainment strategies reflected in the currently adopted 2022 AQMP. Although the Coachella Valley is currently designed as a serious nonattainment area for PM10, the U.S. Environmental Protection Agency (EPA)-approved Coachella Valley PM10 State Implementation Plan is in place with an attainment strategy for meeting the PM10 standard (City of Palm Desert 2022). As stated in the 2022 IS/MND, Chapter 24.12 (Fugitive Dust [PM 10] Control Plan) a fugitive dust control plan must be prepared and approved prior to any earthmoving activities, implementation of which must be under the supervision of an individual with training on Dust Control within the Coachella Valley. With implementation of a PM10 Control Plan during construction as required by Mitigation Measure AQ-1, the Original Project would not result in emissions that exceed applicable SCAQMD Air Quality Significance Thresholds for PM10 (City of Palm Desert 2022). As such, the 2022 IS/MND determined that because the Original Project would be consistent with the AQMP, the Coachella Valley PM10 and Ozone State Implementation Plan, all SCAQMD Air Quality Significance Thresholds, and would implement MM AQ-1, impacts relating to a cumulatively considerable net increase of any criteria pollutant would be less than significant with mitigation incorporated. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Original Project proposed a total of approximately 515,930 square feet between all the proposed buildings, including the club/fitness center, while the Modified Project would allow for approximately 318,000 square feet of single-family homes. The Modified Project would result in a reduction of approximately 197,930 square feet and therefore would reduce construction intensity. The Modified Project, which would generate 488 fewer residents would be expected to generate less criteria air pollutant emissions than the levels identified for the Original Project. As discussed in Appendix G, Air Quality, Greenhouse (GHG) Emissions, and Energy Assessment, the Modified Project would not result in emissions that would exceed the applicable SCAQMD regional thresholds for ozone precursors, PM10 or any criteria pollutant. Nevertheless, the Modified Project would also be required to implement MM-AQ-1. There would be no change in circumstances or new information relating to a cumulatively considerable net increase of any criteria pollutant. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in an impact of less than significant with mitigation incorporated. Therefore, the Modified Project would not result in any new or different impacts relating to a violation of any air quality standards or relating to a cumulatively considerable net increase of any criteria pollutant for which the project region is nonattainment from those previously identified. No further analysis is required. c) Would the project expose sensitive receptors to substantial pollutant concentrations? No New Impact. As discussed in the 2022 IS/MND, the nearest residential structures to the Project site are located north of Frank Sinatra Drive and east of Portola Avenue, respectively. Based on the analysis conducted in the 2022 IS/MND, it was found that the Original Project’s construction emissions would not exceed the established thresholds, SCAQMD Localized Significance Thresholds. Thus, the Original Project was determined to not result in emissions capable of exposing sensitive receptors to localized substantial pollutant concentrations. The 2022 IS/MND also determined that the Original Project would not situate new housing in a location known to be exposed to existing or planned sources of substantial emissions (City Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 21 NOVEMBER 2025 of Palm Desert 2022). As such, the 2022 IS/MND determined impacts relating to exposure of sensitive receptors to substantial pollutant concentrations would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. Implementation of the lower density Modified Project would not increase construction emissions and thus would not expose sensitive receptors to substantial pollutant concentrations as compared to the Original Project. As discussed in Appendix G, Air Quality, Greenhouse (GHG) Emissions, and Energy Assessment, the Modified Project would not exceed the established thresholds, SCAQMD Localized Significance Thresholds, CO Hotspots and would result in a less than significant impact related to health impacts from criteria pollutants. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in a less than significant impact. Therefore, the Modified Project would not result in any new or different impacts relating to exposure of sens itive receptors to substantial pollutant concentrations from those previously identified. No further analysis is required. d) Would the project result in other emissions (such as those leading to odors) adversely affecting a substantial number of people? No New Impact. As detailed within the 2022 IS/MND, implementation of the Original Project would not result in emissions that exceed the applicable SCAQMD Air Quality Significance Thresholds or Localized Significance Thresholds. The proposed residential uses and private amenities are not expected to include or be located near facilities commonly known to generate odors; thus, it was determined that the Original Project would not result in odor or other emissions that would adversely affect substantial numbers of people (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to objectionable odors or other emissions would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. Similar to the Original Project, the Modified Project’s proposed residential uses and private amenities would not expose a substantial number of people to odors or other emissions (see Appendix G of this Addendum). There is no new information or changed circumstances. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in a less than significant impact. Therefore, the Modified Project would not result in any new or different impacts relating to objectionable odors from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 22 NOVEMBER 2025 3.4 Biological Resources New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact IV. BIOLOGICAL RESOURCES – Would the project: a) Have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special- status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Wildlife or U.S. Fish and Wildlife Service? b) Have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations or by the California Department of Fish and Wildlife or U.S. Fish and Wildlife Service? c) Have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means? d) Interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites? e) Conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? f) Conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? g) Affect a Significant Ecological Area (SEA) or Significant Natural Area (SNA) as identified on the City of Santa Clarita ESA Delineation Map? Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 23 NOVEMBER 2025 2022 IS/MND Analysis Summary Potential impacts related to biological resources were analyzed in the 2022 IS/MND on pages 23 through 27. The 2022 IS/MND determined that impacts relating to a substantial adverse effect on any species identified as a candidate, sensitive, or special-status species in local or regional plans, policies, or regulations (threshold a) would be less than significant with mitigation incorporated, while all other potential impacts to biological resources were determined to result in no impact. The 2022 IS/MND incorporated the following mitigation measures: MM BR-1: Prior to construction and issuance of any grading permit, the City of Palm Desert shall ensure compliance with the CVMSHCP and its associated Implementing Agreement and shall ensure that payment of the CVMSHCP Local Development Mitigation Fee for the proposed Project is sent to the Coachella Valley Conservation Commission. MM BR-2: The project proponent shall ensure that burrowing owl clearance survey is performed not more than 14 days prior to project site disturbance (clearing, grubbing, grading, construction). If any owls are identified, the most current protocol established by the California Department of Fish and Wildlife (Burrowing Owl Mitigation) must be followed. It is also recommended that a survey take place 24 hours prior to ground disturbance as burrowing owls may colonize or recolonize the site within the time between the original survey and project activities. Modified Project Analysis a) Would the project have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Wildlife or U.S. Fish and Wildlife Service? No New Impact. As discussed in the 2022 IS/MND, James W. Cornett Ecological Consultants conducted a General and Focused Biological Resources Assessment for the Original Project, which covered the Project site and 100 yards beyond all site boundaries. Field surveys for plant and animal species were also initiated in February 2022. The flat Project site is subject to the Coachella Valley Multiple Species Habitat Conservation Plan (CVMSHCP) and is included as part of the sand field habitat of the valley floor as described in the CVMSHCP. There are no naturally occurring springs or permanent aquatic habitats within or near the Project site, and no streams or dry washes are shown on the U.S. Geological Survey (USGS) maps for the Project site. The Inventory of Rare and Endangered Plants of California, published by the California Native Plant Society (CNPS), the California Natural Diversity Database (CNDDB) Special Plan List (2021), and the Endangered, Threatened, and Rare Plants of California (2021) list a total of five plant species that could occur on the Project site: the glandular ditaxis, ribbed cryptantha, flat-seeded spurge, Coachella Valley milk vetch, and the Salton milkvetch (City of Palm Desert 2022). As described in the 2022 IS/MND, the glandular ditaxis is a rare perennial herb which is not a covered species under the CVMSHCP and that, if present on the Project site, likely would have been detected during the field surveys; it was not detected and therefore the 2022 IS/MND presumed it does not occur on the Project site. The ribbed cryptantha is an uncommon ephemeral species not listed as rare, threatened, or endangered, but considered sensitive by the CNPS, and was not detected on site during the field surveys. The flat-seeded spurge is an extremely rare ephemeral herb known to occur on sandy soils in the Sonoran Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 24 NOVEMBER 2025 Desert; this species, not listed under the CVMSHCP and not listed as rare, threatened, or endangered, but considered sensitive by the CNPS, was not detected on site during the field surveys. The Coachella Valley milk vetch, an uncommon perennial herb known to occur on sandy soils in the Coachella Valley, was not detected on or near the Project site during the field surveys (City of Palm Desert 2022). However, as stated in the 2022 IS/MND, this subspecies has been found within a 1 - mile radius of the Project site in similar habitat, and therefore, seeds of this species may exist on site. Potential impacts to the milk vetch would be fully mitigated by the CVMSHCP through the payment of the Plan mitigation fee. The Salton milk vetch is a perennial herb found in the Sonoran Desert considered sensitive by the CNPS, but not covered under the CVMSHCP; none were detected on or near the Project site during the field surveys (City of Palm Desert 2022). As stated in the 2022 IS/MND, the biological report for the Original Project concluded that there is no evidence or records that any plant species considered sensitive occur on the Project site, and that any species that might occur on site is either covered under the CVMSHCP or is not listed by either the State or the federal government. No individuals of the Palm Springs Pocket Mouse or the desert kit fox were detected during on or near the Project site. However, the Palm Springs ground squirrel, a species covered under the CVMSHCP, was detected on the Project site twice. Potential impacts to this species would be mitigated through the payment of required habitat acquisition fees. Intensive burrowing owl surveys were conducted and returned negative results for the species on the Project site (City of Palm Desert 2022). However, because the Project site is suitable habitat for the owl and because active burrows have been found several times within two miles of the Project site, the 2022 IS/MND assumed that the burrowing owl could take residential on site at any time. In addition, a concerted effort was made to find signs of the officially listed desert tortoise; however, no evidence of any kind was found and because the CNDDB has no records of the tortoise on or within one mile of the Project site, it was concluded that this species does not occur on site or in the immediate vicinity of the Project site. Similarly, no evidence of the flat -tailed horned lizard was found on site (City of Palm Desert 2022). As such, the 2022 IS/MND determined that because the Original Project would be required to comply with the CVMSHCP and because the Original Project would implement Mitigation Measures BR-1 and BR-2, impacts relating to species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by the California Department of Fish and Wildlife or the U.S. Fish and Wildlife Service would be less than significant with mitigation incorporated. Dudek conducted a general field reconnaissance survey, including vegetation mapping and a general habitat assessment within the Modified Project in February of 2025 to document current site conditions and conducted a focused rare plant survey in April of 2025 as part of the August 2025 Biological Resources Technical Report prepared for the Modified Project (Appendix B). The updated surveys confirmed that there are no naturally occurring springs or permanent aquatic habitats within or near the Modified Project site. No rare, threatened, or endangered plant species were observed, nor were any CVMSHCP covered species observed during the April 2025 focused rare plant survey. One special-status wildlife, loggerhead shrike, was observed during the 2025 field efforts, and two special-status wildlife species, burrowing owl and Crotch’s bumble bee, were determined to have a low potential to occur based on known species distribution, species-specific habitat preferences, and habitat conditions on the Modified Project. Of these, only burrowing owl is covered by the CVMSHCP. However, implementation of mitigation measure BR-2 shall include clearance surveys for these applicable species that would ensure potential direct impacts remain less than significant. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 25 NOVEMBER 2025 The 2022 IS/MND mitigation measure has been updated accordingly: MM BR-2: The project proponent shall ensure that burrowing owl clearance survey is performed not more than 14 days prior to project site disturbance (clearing, grubbing, grading, construction). If any owls are identified, the most current protocol established by the California Department of Fish and Wildlife (Burrowing Owl Mitigation) must be followed. It is also recommended that a survey take place 24 hours prior to ground disturbance as burrowing owls may colonize or recolonize the site within the time between the original survey and project activities. If construction activities are to take place during the avian nesting season or breeding season (February 15 through August 31 for most bird species; and January 1 through August 31 for raptors), a pre-construction survey for nesting bird species, including raptors, shall be conducted within 3 days prior to vegetation removal. The survey will identify any active nesting by special-status birds on the project site or within 200 feet of the project boundary. If active nests of special-status birds are present in the impact area or within 200 feet of the edge of construction area, a qualified biologist shall prescribe avoidance measures to be approved by the City Palm Desert including, but not limited to, establishing a construction buffer until the nesting activity is concluded. The type of species, nesting stage, surrounding topography, existing conditions, and type of construction activity will determine the appropriate avoidance measures. It should be noted also that under California Fish and Game Code 3503 and the Migratory Bird Treaty Act, no active nests, eggs, or young of native birds can be directly disturbed. For non-special-status species, the qualified biologist will work with the construction contractor to ensure that no active bird nests are directly disturbed as a result of the project. A pre-construction survey for Crotch’s bumble bee shall occur within the construction area where suitable habitat has been identified during the primary flight period for workers and males (March 1 through June 30) prior to the start of construction activities. The survey shall ensure that no nests for Crotch’s bumble bee are located within the construction area. Crotch’s bumble bee is a habitat generalist, ground-nesting bee. Surveys and other relevant recommendations shall be in accordance with the most recent protocol available at the time of the surveys. If nest resources occupied by Crotch’s bumble bee are detected within the construction area, no construction activities shall occur within 100 feet of the occupied nest resources, or as determined by a qualified biologist through evaluation of topographic features or distribution of floral resources. The nest resources shall be avoided for the duration of the Crotch’s bumble bee nesting period (February 1 through October 31). Outside of the nesting season, it is assumed that no live individuals would be present within the nest, because the daughter queens (gynes) usually leave by September, and all other individuals (original queen, workers, males) die. The gynes are highly mobile and can independently disperse to outside the construction footprint to the proposed open space or other suitable areas beyond that have suitable hibernaculum resources. Because construction will have occurred in the area outside the occupied nesting resources, no suitable habitat will be present in the impact area, and it is assumed that new queens will disperse to habitat outside the construction area. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 26 NOVEMBER 2025 The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to be required to comply with the CVMSHCP and implement mitigation measure BR-1 as well as updated mitigation measure BR-2. As such, impact associated with the Modified Project would be consistent with the impact conclusions provided in the 2022 IS/MND and would result in an impact of less than significant with mitigation incorporated. No further analysis is required. b) Would the project have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations, or by the California Department of Fish and Wildlife or U.S. Fish and Wildlife Service? No New Impact. As described in the 2022 IS/MND, the biological survey performed on the Project site did not find any naturally occurring springs, streams or dry washes, permanent aquatic habitats, or other sensitive natural community identified in local or regional plans, policies, or regulations, or by the California Department of Fish and Wildlife or the U.S. Fish and Wildlife Service. Therefore, the 2022 IS/MND determined that no impact would occur in this regard. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not affect riparian habitats or sensitive natural communities as none exist on or near the Project site as confirmed during the updated 2025 survey efforts. There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in no impact. Therefore, the Modified Project would not result in any new or different impacts relating to any riparian habitat or other sensitive natural community from those previously identified. No further analysis is required. c) Would the project have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means? No New Impact. As described in the 2022 IS/MND, the Project site does not contain federally protected wetlands, marshes, or other drainage features, and the National Wetland Inventory indicated that there are no wetlands or riparian resources on the Project site. In addition, the analysis did not identify any naturally occurring springs or permanent aquatic habitats on or near the Project site. The proposed on-site storm drain improvements include facilities to prevent runoff to adjacent land uses, and a project-specific Water Quality Management Plan (WQMP) would be required to ensure that the Original Project does not contain pollutants of concern in any storm runoff (City of Palm Desert 2022). As such, the 2022 IS/MND determined that no impact to state or federally protected wetlands would occur. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to be required to implement on-site storm drain improvements and implement a project-specific WQMP. The Modified Project would not affect state or federally protected wetlands. Further, there are no changed circumstances or new information relating to state or federally protected wetlands as confirmed during the updated 2025 survey efforts. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in no Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 27 NOVEMBER 2025 impact. Therefore, the Modified Project would not result in any new or different impacts relating to protected wetlands from those previously identified. No further analysis is required. d) Would the project interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites? No New Impact. As stated in the 2022 IS/MND, the biological report prepared for the Original Project found that no migratory wildlife corridors or native wildlife nursery sites were found on the Project site or adjacent properties, and no discernable routinely used corridors were found. The Project site, surrounded by developed and highly disturbed environments, residential communities, and roadways, has been disturbed by historical grading and does not act as a wildlife corridor or native wildlife nursery site (City of Palm Desert 2022). As such, the 2022 IS/MND determined that the Original Project would result in no impact relating to the movement of native resident or migratory fish or wildlife species. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to not affect the movement of native resident or migratory fish or wildlife species. Further, there would be no changed circumstances and no new information as confirmed during the updated 2025 survey efforts. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in no impact. Therefore, the Modified Project would not result in any new or different impacts relating to the movement of native resident or migratory fish or wildlife species from those previously identified. No further analysis is required. e) Would the project conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance? No New Impact. As discussed in the 2022 IS/MND, the Project site is vacant with scattered vegetation and does not support high value biological resources, and the Original Project would not result in demolition or tree removal. The Original Project would comply with the CVMSHCP and there are no other unique local policies or ordinances protecting biological resources, including a tree preservation policy or ordinance, that the Original Project could potentially conflict with (City of Palm Desert 2022). As such, the 2022 IS/MND determined that the Original Project would result in no impact relating to conflicts with any local policies protecting biological resources. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to comply with the CVMSHCP and therefore would not conflict with existing local policies or ordinances protecting biological resources. There are no changed circumstances and no new information as confirmed during the updated 2025 survey efforts. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in no impact. Therefore, the Modified Project would not result in any new or different impacts relating to conflicts with any local policies protecting biological resources from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 28 NOVEMBER 2025 f) Would the project conflict with the provisions of an adopted Habitat Conservation Plan, Natural Community Conservation Plan, or other approved local, regional, or state habitat conservation plan? No New Impact. As discussed in the 2022 IS/MND, the Original Project is located within the boundaries of the CMSHCP but is not located within a Conservation Area under the plan, and there are no known significant biological resources on the Project site. The CVMSHCP implements a habitat mitigation fee to be paid to the City for new development to support the acquisition of conservation lands. Thus, the Original Project would comply with all required plan provisions and would pay the required fee in conformance with the CVMSHCP and City Ordinance (City of Palm Desert 2022). As such, the 2022 IS/MND determined that the Original Project would result in no impact relating to conflicts with an adopted habitat conservation plan or natural community conservation plan. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to comply with the CVMSHCP and pay the required fees. There are no changed circumstances and no new information. As such, the Modified Project would not conflict with provisions of an approved local, regional, or state habitat conservation plan. Impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in no impact. Therefore, the Modified Project would not result in any new or different impacts relating to conflicts with an adopted habitat conservation plan or natural community conservation plan from those previously identified. No further analysis is required. 3.5 Cultural Resources New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact V. CULTURAL RESOURCES – Would the project: a) Cause a substantial adverse change in the significance of a historical resource pursuant to §15064.5? b) Cause a substantial adverse change in the significance of an archaeological resource pursuant to §15064.5? c) Disturb any human remains, including those interred outside of formal cemeteries? 2022 IS/MND Analysis Summary Potential impacts related to cultural resources were analyzed in the 2022 IS/MND on pages 28 and 29. The 2022 IS/MND determined that all potential impacts would be less than significant. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 29 NOVEMBER 2025 Modified Project Analysis a) Would the project cause a substantial adverse change in the significance of a historical resource pursuant to Section 15064.5? No New Impact. As discussed in the 2022 IS/MND, CRM Tech prepared a Historical/Archaeological Resource Survey Report for the Original Project in April 2022 and utilized information from a past CRM Tech Phase I cultural resources survey for the Original Project area completed in 2006, which included a records search, background research, Native American consultation, and an intensive-level field survey. Throughout the course of the 2022 and 2006 research procedures, no historical resources were identified within or adjacent to the Project site. In addition, a different 2015 CRM Tech survey for the Original Project area also yielded negative results for historical resources. As stated in the 2022 IS/MND, the results of records searches for two studies carried out on properties within a 1-mile radius of the Project site were examined for pertinent information and they indicated that no additional cultural resources studies occurred within the Original Project area between 2015 and 2018, that no additional historical or archaeological resources have been identified within the Original Project area or within a 1-mile radius, and the only known cultural resources within a half mile of the Original Project area is Site 33-005080, located approximately 0.25 miles outside of the Project area. Additionally, during the 2022 field inspection conducted for the Original Project at the Project site, no historical or archaeological resources were encountered in the Original Project area (City of Palm Desert 2022). As such, the 2022 IS/MND concluded that impacts to historical resources would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. Because the proposed Project site is unchanged, the Modified Project would continue to not directly impact historical resources within the City. There are no other changed circumstances. Additionally, the Cultural Resources Constraints Analysis conducted for the Modified Project included a records search update, which indicated that no recently identified resources have been identified within the Modified Project site (Appendix C). As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in impacts that are less than significant. The Modified Project would not result in any new or different impacts relating to historical resources from those previously identified. No further analysis is required. b) Would the project cause a substantial adverse change in the significance of an archaeological resource pursuant to Section 15064.5? No New Impact. As discussed in the 2022 IS/MND, CRM Tech prepared a Historical/Archaeological Resource Survey Report for the Original Project in April 2022 and utilized information from a past CRM Tech Phase I cultural resources survey for the Original Project area completed in 2006. CRM Tech also submitted a written Sacred Lands File request to the Native American Heritage Commission (NAHC) for information pertaining to known Native American cultural resources in the Original Project vicinity; however, the NAHC reply stated that the Sacred Lands File identified no such resources in or near the Original Project area. In addition, the 2022 field survey produced negative results and records searched indicate that no additional cultural resources have been identified within the Original Project area or within a 1-mile radius (City of Palm Desert 2022). As such, the 2022 IS/MND concluded that impacts to archaeological resources would be less than significant. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 30 NOVEMBER 2025 The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not directly impact archaeological resources in the City as the Cultural Resources Constraints Analysis conducted for the Modified Project, which included a South Coastal Information Center and NAHC Sacred Lands File records search update, found that no previously identified cultural resources intersect the Modified Project area (Appendix C). Additionally, there are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in a less than significant impact. Therefore, the Modified Project would not result in any new or different impacts relating to archaeological resources from those previously identified. No further analysis is required. c) Would the project disturb any human remains, including those interred outside of formal cemeteries? No New Impact. As discussed in the 2022 IS/MND, the Original Project would not be expected to affect any human remains, including those outside of formal cemeteries. The 2022 field survey conducted for the Original Project did not show any evidence of human activities dating to prehistoric or historic periods, and no other sites, features, artifacts, or built environment features were encountered. Pursuant to California Health and Safety Code Section 7050.5, in the event of discovery or recognition of any human remains, the Original Project would be required to halt until the County Coroner has examined the remains. If the coroner determines that the remains are not recent and may be Native American, Public Resources Code Section 5097.98 requires the coroner to notify the NAHC within 24 hours (City of Palm Desert 2022). As stated in the 2022 IS/MND, compliance with these State laws would reduce any potential impacts to human remains to a level of less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to be required to comply with State law and would not disturb human remains. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in a less than significant impact. Therefore, the Modified Project would not result in any new or different impacts relating to human remains from those previously identified. No further analysis is required. 3.6 Energy New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact VI. ENERGY – Would the project: a) Result in potentially significant environmental impact due to wasteful, inefficient, or unnecessary consumption of energy resources, during project construction or operation? Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 31 NOVEMBER 2025 New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact b) Conflict with or obstruct a state or local plan for renewable energy or energy efficiency? 2022 IS/MND Analysis Summary Potential impacts related to energy were analyzed in the 2022 IS/MND on pages 30 through 40. The 2022 IS/MND determined that potential impacts relating to energy would be less than significant. Modified Project Analysis a) Would the project result in potentially significant environmental impact due to wasteful, inefficient, or unnecessary consumption of energy resources, during project construction or operation? No New Impact. As discussed in the 2022 IS/MND, electricity and natural gas are the primary sources of energy within the City, provided by Southern California Edison (SCE) and Southern California Gas Company (SoCalGas), respectively. The Original Project would be expected to use energy in the form of electricity, natural gas, and petroleum during construction and operation (City of Palm Desert 2022). As stated in the 2022 IS/MND, although the Original Project would require electricity for various activities during construction, electricity use would be temporary, and the amount of electricity required would be negligible. Natural gas would not be used for construction; although, petroleum would be used during construction for construction equipment and from construction workers that are expected to travel to and from the Project site in gasoline-powered cars. However, no unusual Original Project characteristics or construction processes that would require the use of equipment that would be more energy intensive that is used for comparable activities or would not conform to current emissions standards would occur (City of Palm Desert 2022). Overall, the 2022 IS/MND estimates that the Original Project would consume approximately 76,767.3 gallons of gasoline, 125,387.9 gallons of diesel fuel, and 202,155.2 gallons of petroleum during construction, which would not represent the use of energy resources in a wasteful or inefficient manner. In addition, as discussed in the 2022 IS/MND, the Original Project would not result in the use of excessive amount of fuel or electricity and would not result in the need to develop additional sources of energy. Although energy use would not be excessive, the Original Project incorporated several energy efficient design features aimed at minimizing energy use. Operation of the Original Project was determined to result in a long-term increase in demand for electricity and natural gas. However, the Original Project would be required to comply with the California Building Code (CBC) and California Energy Code standards to ensure efficient technologies and practices are used at the Project site (City of Palm Desert 2022). As such, the 2022 IS/MND determined that the Original Project would not result in the inefficient, wasteful, or unnecessary use of natural gas during operation. Furthermore, as discussed in the 2022 IS/MND, although the Original Project would result in additional VMT, over the lifetime of the Original Project, the fuel efficiency of cars and advancement of more efficient Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 32 NOVEMBER 2025 technology is expected to increase, which would, over time, reduce the amount of petroleum consumed for vehicle trips to and from the Project site during operation. In addition, regional VMT and associated emissions would be reduced by the proposed on-site sidewalk improvements to improve pedestrian connectivity, encouraging telecommuting and alternative work schedules, and implementing a school bus program (City of Palm Desert 2022). As stated in the 2022 IS/MND, the Original Project would provide for and promote energy efficiencies required under other applicable federal and State of California standards and regulations, which would allow the Original Project to meet CBC, Title 24 standards. It was determined that the energy consumed for the Original Project would be comparable to energy consumed by other residential uses of similar scale and intensity. The Original Project would also implement required measures under the City’s General Plan, Municipal Code, the CBC, and the California Energy Code (City of Palm Desert 2022). As such, the 2022 IS/MND determined that the Original Project would not result in the inefficient, wasteful, or unnecessary consumption of energy, and impacts would be less than significant. The Modified Project is proposed to allow for the construction of lower density, one- to two-story single- family homes on the Project site instead of the originally envisioned three -story multifamily apartment buildings. The Original Project proposed a total of approximately 515,930 square feet between all the proposed buildings, including the club/fitness center, while the Modified Project would allow for approximately 318,000 square feet of single-family homes: a reduction of approximately 197,930 square feet under the Modified Project. The Modified Project, which would generate 488 fewer residents on site and would therefore utilize less energy than the levels analyzed in the 2022 IS/MND, would still be required to implement required measures under the City’s General Plan, Municipal Code, the CBC, and the California Energy Code to ensure efficient technologies and practices are used at the Project site. As detailed in Appendix G, Air Quality, Greenhouse (GHG) Emissions, and Energy Assessment, the Modified Project would not result in the inefficient, wasteful, or unnecessary consumption of energy. There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in a less than significant impact. Therefore, the Modified Project would not result in any new or different impacts relating to wasteful, inefficient, or unnecessary consumption of energy resources from those previously identified. No further analysis is required. b) Would the project conflict with or obstruct a state or local plan for renewable energy or energy efficiency? No New Impact. As discussed in the 2022 IS/MND, regarding federal transportation regulations, the Project site is located in a developed area with existing roads in place; thus, the Original Project was determined to not interfere with or obstruct intermodal transportation plans or projects as none are being planned for the Original Project area. Regarding the State’s Energy Plan and compliance with Title 24 energy efficiency standards, the Original Project is required to comply with the California Green Building Standards Code (CALGreen) requirements for energy efficient buildings and appliances, as well as energy efficiency programs implemented by SCE and SoCalGas. Regarding the State’s Renewable Energy Portfolio Standards, the Original Project would be required to meet or exceed the energy standards established in Title 24, Part 11 of CALGreen, which 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. In addition, the Original Project was deemed to be consistent with the applicable strategies of the City’s Sustainability Plan and GHG Inventory, as well as CARB’s Scoping Plan. The Original Project property would be required to comply with all applicable federal, state, and local guidelines and regulations regarding energy efficient building design and standards (City of Palm Desert 2022). As such, the 2022 IS/MND determined that the Original Project Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 33 NOVEMBER 2025 would not conflict with or obstruct a state or local plan for renewable energy or energy efficiency, and impacts were determined be less than significant. The Modified Project is proposed to allow for the construction of lower density, one- to two-story single- family homes on the Project site instead of the originally envisioned three -story multifamily apartment buildings. The Modified Project, which would generate 488 fewer residents on site and would therefore utilize less energy than the levels analyzed in the 2022 IS/MND, would still be required to comply with the latest CALGreen and energy efficiency programs implemented by SCE and SoCalGas. As presented in Appendix G, Air Quality, Greenhouse (GHG) Emissions, and Energy Assessment, implementation of the Modified Project would not conflict with state or local plans related to renewable energy or energy efficiency, There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in a less than significant impact. Therefore, the Modified Project would not result in any new or different impacts relating to conflicts with a State or local plan for renewable energy from those previously identified. No further analysis is required. 3.7 Geology and Soils New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact VII. GEOLOGY AND SOILS – Would the project: a) Directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving: i) Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Refer to Division of Mines and Geology Special Publication 42. ii) Strong seismic ground shaking? iii) Seismic-related ground failure, including liquefaction? iv) Landslides? b) Result in substantial soil erosion or the loss of topsoil? c) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction, or collapse? Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 34 NOVEMBER 2025 New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact d) Be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code (1994), creating substantial risks to life or property? e) Have soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater? f) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? 2022 IS/MND Analysis Summary Potential impacts related to geology and soils were analyzed in the 2022 IS/MND on pages 41 through 45. The 2022 IS/MND determined that potential impacts relating to paleontological resources would be less than significant with mitigation, while all other geology and soils impacts would be less than significant. The 2022 IS/MND incorporated the following mitigation measure: MM GEO-1: A qualified paleontologist shall be retained and present during the first days of ground disturbing activities. Once the paleontologist has had a chance to assess the sediments and paleontological potential of the project area, he/she may make a recommendation to reduce the monitoring effort, as appropriate, or continue with full time monitoring. This decision shall be communicated along with the rationalization to the City for their records. Modified Project Analysis a) Would the project directly or indirectly cause potential substantial adverse effects, including the risk of loss, injury, or death involving: i) Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Refer to Division of Mines and Geology Special Publication 42. No New Impact. As discussed in the 2022 IS/MND, the City’s General Plan notes that the City’s planning area is not located in an active fault zone; however, the planning area is bordered by three active faults, including the San Andreas Fault, located approximately 4 miles north of the planning area and 4.2 miles northeast of the proposed Project site. Other nearby faults include the San Jacinto Fault, approximately 10 miles southwest of the City’s planning area, and the Elsinore Fault, approximately 30 miles to the southwest. Although ground shaking is expected to occur within the City, rupture from an earthquake fault is not anticipated to occur on the Project site (City of Palm Desert 2022). Therefore, the 2022 IS/MND determined that the Original Project would not expose people or structures to potentially substantial adverse effects from rupture of a known earthquake fault and determined that impacts would be less than significant. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 35 NOVEMBER 2025 The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As discussed in the Updated Geotechnical Report prepared for the Modified Project (Appendix A), the Project site is not located within an “Alquist-Priolo” Earthquake Fault Zone. There are no changed circumstances or new information relating to geology and soils. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to rupture of a known earthquake fault from those previously identified. No further analysis is required. ii) Strong seismic ground shaking? No New Impact. As discussed in the 2022 IS/MND, strong ground shaking is the geologic hazard that has the greatest potential to severely impact the Palm Desert planning area due to the major faults in the region, such as the San Andreas and San Jacinto faults. All structures within the City’s planning area would experience significant shaking and could be damaged if not designed properly. However, the City requires all new construction to meet the standards of the Uniform Building Code for Seismic Zone 4 and to comply with the most current seismic design coefficients and ground motion parameters, and to comply with all applicable provisions of the CBC and City Municipal Code Section 15.04.010 (Adoption of California Building Code). In addition, remedial grading and construction would work to reduce exposure of people or structures to adverse effects from seismic hazards to the greatest extent possible (City of Palm Desert 2022). As stated in the 2022 IS/MND, compliance with these building safety design standards would ensure that potential geology and soils impacts would be less than significant. Therefore, the Original Project would not expose people or structures to potentially substantial adverse effects from strong seismic ground shaking and impacts would be less than significant (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As discussed in the Updated Geotechnical Report prepared for the Modified Project (Appendix A), the Project site is not located within an “Alquist-Priolo” Earthquake Fault Zone. Construction of the Modified Project would continue to be required to comply with all applicable City standards and the CBC. The Modified Project would not result in any ground-shaking impacts. Further, there are no changed circumstances or new information relating to geology and soils. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to strong seismic ground shaking from those previously identified. No further analysis is required. iii) Seismic-related ground failure, including liquefaction? No New Impact. As discussed in the 2022 IS/MND, the City’s General Plan states that, according to the Riverside County Land Use Information System, the majority of the City is located in an area susceptible to moderate liquefaction potential. Factors known to influence liquefaction include depth to groundwater, soil type, structure, grain size, relative density, the intensity and duration of ground shaking, and the soils most Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 36 NOVEMBER 2025 susceptible to liquefaction are saturated, loose, sandy soils and low plasticity clay and silt (City of Palm Desert 2022). The 2022 IS/MND found that because the Project site soils include Myoma fine sand and because historic groundwater levels at the Project site are greater than 50 feet below the ground surface, liquefaction potential at the Project site is low. Furthermore, the 2022 Original Project-specific Geotechnical Report states that exploratory boreholes did not encounter groundwater to the maximu m explored depth, and it was determined that risks associated with liquefaction were negligible. The 2022 IS/MND determined that adherence to standard design requirements for Seismic Zone 4 and CBC standards would ensure that the Original Project’s seismic-related ground failure and liquefaction impacts would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As detailed in the Updated Geotechnical Report prepared for the Modified Project (Appendix A), the Project site is not located within an “Alquist-Priolo” Earthquake Fault Zone and the Project site is not mapped within a State of California Seismic Hazard Zone for liquefaction or earthquake-induced landslides. Similar to the Original Project, the Modified Project would be required to comply with City standards, including the building requirements for Seismic Zone 4 and CBC standards. Therefore, the Modified Project would not result in any seismic-related ground failure impacts. Further, there are no changed circumstances or new information relating to seismic-related conditions in the project area. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to seismic-related ground failure from those previously identified. No further analysis is required. iv) Landslides? No New Impact. As discussed in the 2022 IS/MND, Figure 7.5 of the City’s General Plan indicates that potential landslide hazards are primarily located in the hillside or mountainous areas of the southernmost portions of the City; however, the proposed Project site is located in a central area of the City that is not designated as having landslide potential and where the site is characterized by flat topography and partially disturbed native desert conditions. As such, the 2022 IS/MND determined that the Original Project’s landslide impacts would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As detailed in the Updated Geotechnical Report prepared for the Modified Project (Appendix A), the Project site is not located within an “Alquist-Priolo” Earthquake Fault Zone; nor is the site mapped within a State of California Seismic Hazard Zone for liquefaction or earthquake-induced landslides. There are no changed circumstances nor any new information relating to geology and soils, including landslide potential. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to landslides from those previously identified. No further analysis is required. b) Would the project result in substantial soil erosion or the loss of topsoil? No New Impact. As discussed in the 2022 IS/MND, the City is susceptible to wind erosion and hazards associated with wind erosion, including the Project site, which is located in an area with a Very High Wind Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 37 NOVEMBER 2025 Erodibility Rating. The Original Project would be required to implement a PM10 Fugitive Dust Control Plan per SCAQMD Rule 403.1 and per Mitigation Measure AQ-1. This plan would be submitted and reviewed as part of the grading permit process to minimize potential impacts caused by blowing dust and sand during construction. Best management practices (BMPs) included in the required PM10 Dust Control Plan would work to reduce windborne fugitive dust caused by earth movement to the greatest extent possible (City of Palm Desert 2022). As detailed further in the 2022 IS/MND, because the Original Project is larger than one acre, it would also be required to comply with the most current Construction General Permit (CGP) (Order No. 2009-0009- DWQ as amended by 2010-0014-DWQ and 2012-0006-DWQ), which involves implementation of a Stormwater Pollution Prevention Plan (SWPPP) that would reduce potential adverse impacts to surface water quality during construction from construction activities by utilizing specific BMPs and other necessary compliance measures to prevent soil erosion and stormwater runoff pollution (City of Palm Desert 2022). As stated in the 2022 IS/MND, implementation of the Fugitive Dust Control Plan and the SWPPP would ensure that the Original Project’s erosion impacts would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As detailed in the Updated Geotechnical Report prepared for the Modified Project (Appendix A), the Project site is not located within an “Alquist-Priolo” Earthquake Fault Zone; nor is the site mapped within a State of California Seismic Hazard Zone for liquefaction or earthquake-induced landslides. Similar to the Original Project, development of the Modified Project would continue to be required to implement a Fugitive Dust Control Plan and a SWPPP. There are no changed circumstances or new information relating to geology and soils. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to substantial soil erosion or the loss of topsoil from those previously identified. No further analysis is required. c) Would the project be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction or collapse? No New Impact. As discussed in the 2022 IS/MND, the potential for liquefaction to occur is based on the presence of groundwater within 50 feet of the surface and it was determined that, because the approximate depth to groundwater at the Project site is greater than 50 feet, the potential for liquefaction (and lateral spreading, an effect of liquefaction) is low, and impacts would be less than significant. In addition, as discussed in Section 3.7a) iv) above, the 2022 IS/MND determined that the Project site is not located in an area susceptible to landslides and that the Project site topography is relatively flat; therefore, it was determined that landslide impacts would be less than significant. Ground subsidence is a regional issue that affects the City, and subsidence rates have been rapidly increasing in the Coachella Valley. As detailed in the 2022 IS/MND, Coachella Valley Water District (CVWD) has implemented a variety of measures to reduce subsidence, such as groundwater recharge, imported water, water conversation techniques, and more. Monitoring conducted by the USGS indicates that subsidence has occurred near the central portion of the City, specifically near Fred Waring Drive and Monterey Avenue. However, because USGS maps show that subsidence has not occurred at the Project site and the Original Project-specific Geotechnical Report did not observe any fissures or other surficial evidence of subsidence at or near the Project site, impacts were determined to be less than significant. Furthermore, the 2022 IS/MND states that, per the Palm Desert General Plan, expansive clay or soils exhibiting shrink-swell characteristics do not underlie the City; Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 38 NOVEMBER 2025 however, soil conditions would be analyzed on a project-by-project basis, grading plans and structural engineering plans would be reviewed and approved by the City, and the Original Project would be required to comply with the current CBC standards and City requirements to reduce the impacts of potentially unstable soils (City of Palm Desert 2016a, 2022). Therefore, as stated in the 2022 IS/MND, Original Project impacts relating to unstable soils would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As detailed in the Updated Geotechnical Report prepared for the Modified Project (Appendix A), the Project site is not located within an “Alquist-Priolo” Earthquake Fault Zone, mapped within a State of California Seismic Hazard Zone for liquefaction or earthquake-induced landslides, and groundwater is anticipated to be greater than 50 feet below the ground surface of the Project site. The Modified Project would not conflict with existing regulations to reduce impacts associated with unstable soil. Further, there are no changed circumstances or new information relating to geologic units and soils at the Project site. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to unstable soils from those previously identified. No further analysis is required. d) Would the project be located on expansive soil, as defined in Table 18-1-B of the Uniform Building Code (1994), creating substantial direct or indirect risks to life or property? No New Impact. As discussed in the 2022 IS/MND, the Palm Desert General Plan states that expansive clay or soils exhibiting shrink-swell characteristics do not underlie the City, and the Original Project-specific Geotechnical Report discovered that the material underlying the Project site are considered “non- expansive” (City of Palm Desert 2016a). Furthermore, grading plans and structural engineering plans would be reviewed and approved by the City, and the Original Project would be required to comply with the current CBC standards that include common engineering practices that reduce or eliminate potential expansive soil-related impacts, as well as City requirements to reduce the impacts of potentially unstable soils (City of Palm Desert 2022). Therefore, the 2022 IS/MND determined that impacts relating to expansive soil would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As detailed in the Updated Geotechnical Report prepared for the Modified Project (Appendix A), the Project site is not located within an “Alquist-Priolo” Earthquake Fault Zone; nor is the site mapped within a State of California Seismic Hazard Zone for liquefaction or earthquake-induced landslides. Similar to the Original Project, the Modified Project would not conflict with existing regulations to reduce impacts associated with unstable soil. There are also no changed circumstances or new information relating to geology and soils. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to expansive soils from those previously identified. No further analysis is required. e) Would the project have soils incapable of adequately supporting the use of septic tanks or alternative waste water disposal systems where sewers are not available for the disposal of waste water? No New Impact. As discussed in the 2022 IS/MND, the Project site is surrounded by urbanized development within the City and would be required to connect to the sanitary sewer lines in the area; no Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 39 NOVEMBER 2025 septic tanks would be required. Therefore, the 2022 IS/MND determined that the Original Project would result in no impact relating to septic tanks or alternative wastewater disposal systems. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would connect to the City’s sanitary sewer lines and would not conflict with existing regulations associated with septic tanks or alternative wastewater disposal systems. There are no changed circumstances or new information relating to Project site soils. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND; no impact would occur. Therefore, the Modified Project would not result in any new or different impacts relating to septic tanks or alternative wastewater disposal systems from those previously identified. No further analysis is required. f) Would the project directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? No New Impact. As discussed within the 2022 IS/MND, per Riverside County General Plan Figure OS-8, Paleontological Sensitivity, the Project site is recognized for having low potential for paleontological resources and is not recognized as a unique paleontological or a un ique geologic feature; therefore, the 2022 IS/MND determined that it is unlikely paleontological resources exist on site. Although the Original Project has a low potential for encountering significant paleontological resources, a qualified paleontologist shall be retained and present during the first days of ground-disturbing activities to assess the sediments and paleontological potential of the Original Project area through implementation of Mitigation Measure (MM) GEO-1 (City of Palm Desert 2022). As stated in the 2022 IS/MND, with incorporation of MM GEO-1, impacts to paleontological resources were determined to be less than significant with mitigation. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to be required to implement MM GEO-1. There are no changed circumstances or new information relating to paleontological resources. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant with mitigation incorporated. Therefore, the Modified Project would not result in any new or different impacts relating to paleontological resources from those previously identified. No further analysis is required. 3.8 Greenhouse Gas Emissions New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact VIII. GREENHOUSE GAS EMISSIONS – Would the project: a) Generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment? Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 40 NOVEMBER 2025 New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact b) Conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse gases? 2022 IS/MND Analysis Summary Potential impacts related to GHG emissions were analyzed in the 2022 IS/MND on pages 46 through 50. The 2022 IS/MND did not identify any significant impacts related to GHG emissions and was found to be consistent with the California Air Resources Board (CARB) 2017 State Scoping Plan, and therefore would not substantially contribute to global climate change impacts. Impacts were determined to be less than significant. Modified Project Analysis a) Would the project generate greenhouse gas emissions, either directly or indirectly, that may have a significant impact on the environment? No New Impact. As discussed in the 2022 IS/MND, Original Project implementation is expected to generate approximately 3,150.44 metric tons (MT) of carbon dioxide equivalent (CO2e), exceeding the applicable SCAQMD threshold of 3,000 MT of CO2e. However, utilizing various available CalEEMod factors to reduce GHG emissions, including an assumption that a conservative rate of 10% of residents would partially work from home and that the Original Project would utilize high efficiency light fixtures and appliances and would use low volatile organic compound materials per SCAQMD Rule 1113. The identified GHG reduction factors would substantially reduce Original Project GHG emissions to 2,956.43 MT of CO2e, which would be below the SCAQMD limit threshold (City of Palm Desert 2022). As such, the 2022 IS/MND determined that because the Original Project would be complaint with the SCAQMD threshold, which is a part of the State’s regulations aimed at addressing climate change, the Original Project is not expected to interfere with plans, policies, or regulations adopted for the purpose of reducing GHG emissions, and impacts would be less than significant. The Modified Project is proposed to allow for the construction of lower density one- to two-story single- family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings, which would reduce the amount of greenhouse gases emitted from the Modified Project through reduced construction and heavy machinery demands and from a reduction of residents during operation resulting in reductions in VMT, and energy consumption. As presented in Appendix G of this Addendum, Air Quality, Greenhouse (GHG) Emissions, and Energy Assessment, the Modified Project would not exceed the SCAQMD threshold of 3,000 MT of CO2e. As such, t he Modified Project would not result in significant GHG emissions. There are no changed circumstances or new information relating to GHG emissions. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to significant GHG emissions from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 41 NOVEMBER 2025 b) Would the project generate conflict with an applicable plan, policy or regulation adopted for the purpose of reducing the emissions of greenhouse gases? No New Impact. As discussed in the 2022 IS/MND, the Original Project would emit approximately 2,956.43 MT of CO2e per year after accounting for GHG reduction measures, which is below the applicable SCAQMD threshold and in compliance with Assembly Bill (AB) 32. When accounting for the evaluated expected residential population of approximately 824 residents for the Original Project’s up to 402 total dwelling units, the estimated per capita GHG emissions for the Original Project would be 3.59 MT of CO2e, which is considerably below the City’s most recent per capita calculation of 12.3 MT of CO2e assessed for the City under the Palm Desert Greenhouse Gas Inventory (2013 Update) (City of Palm Desert 2022). As such, the 2022 IS/MND determined that the Original Project is not expected to conflict with any applicable plan, policy, or regulation for the purpose of reducing GHG emissions, and impacts would therefore be less than significant. The Modified Project is proposed to allow for the construction of lower density one- to two-story single-family homes on the Project site instead of the originally envisioned three -story multifamily apartment buildings, which would reduce the amount of greenhouse gases emitted from the Modified Project from reduced construction and heavy machinery demands and from a reduction of residents during operation. As detailed in Appendix G, Air Quality, Greenhouse (GHG) Emissions, and Energy Assessment, the Modified Project would not conflict with an applicable plan, policy or regulation to reduce GHG emissions , including Applicable plans for the project site such as SCAG’s 2024-2050 RTP/SCS and CARB’s 2022 Scoping Plan to address Senate Bill (SB) 32 and Assembly Bill (AB) 1279. There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to conflicts with an applicable plan, policy or regulation to reduce GHG emissions from those previously identified. No further analysis is required. 3.9 Hazards and Hazardous Materials New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact IX. HAZARDS AND HAZARDOUS MATERIALS – Would the project: a) Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials? b) Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment? Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 42 NOVEMBER 2025 New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact c) Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school? d) Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or the environment? e) For a project located within an airport land use plan or, where such a plan has not been adopted, within 2 miles of a public airport or public use airport, would the project result in a safety hazard for people residing or working in the project area? f) Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan? g) Expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires? 2022 IS/MND Analysis Summary Potential impacts related to hazards and hazardous materials were analyzed in the 2022 IS/MND on pages 51 through 54. All potential hazards and hazardous materials impacts were determined to be less than significant or were determined to have no impact. Modified Project Analysis a) Would the project create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials? No New Impact. As discussed in the 2022 IS/MND, regulation and enforcement of safety measures for the use and management of hazardous or potentially hazardous materials is the responsibility of federal, State, and local agencies, and is regulated under federal, State, and local laws. Construction of the Original Project is expected to involve the temporary management and use of oils, fuels, and other potentially flammable substances. Some of these materials would be transported to the Project site periodically by vehicle and would be stored in designated controlled areas on a short-term basis. When handled properly by trained individuals and consistent with the manufacturer’s instructions and industry standards, the risk involved Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 43 NOVEMBER 2025 with handling these materials is considerably reduced. The Original Project contractor would be required to identify a staging area for storing materials and equipment and would be required to implement BMPs to ensure that potential impacts are minimized and that any minor spills are immediately and properly remediated (City of Palm Desert 2022). As further discussed in the 2022 IS/MND, the management of potentially hazardous materials and other potential pollutant sources will be regulated through the implementation of control measures required in the SWPPP, which will prevent pollutants from being released on-site or into the surroundings. BMPs would be implemented for Material Delivery and Storage, Material Use, and Spill Prevention and Control to prevent impacts of pollutants and hazardous materials to workers and the environment during construction. In addition, other standard measures such as perimeter controls, linear sediment barriers, and access restrictions would help prevent temporary impacts to the public and environment. Activities in the proposed residential community are expected to involve the presence and transport of chemicals for household and maintenance facilities; however, these will occur in limited quantities and are not expected to represent a potentially significant impact, and the Original Project does not include facilities with foreseeable risk of accident conditions involving the release of hazardous materials into the environment (City of Palm Desert 2022). The 2022 IS/MND therefore determined that with the identified standard measures in place, Original Project impacts relating to the routine use, transport, or disposal of hazardous and hazardous materials would be less than significant. Because the Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings, the Modified Project would be consistent with the analysis of the 2022 IS/MND and impacts would be less than significant. There are no changed circumstances or new information relating to hazards and hazardous materials. Therefore, the Modified Project would not result in any new or different impact relating to the transport, use, or disposal of hazardous materials from those previously identified. No further analysis is required. b) Would the project create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment? No New Impact. As discussed in the 2022 IS/MND and described in Section 3.9(a) above, the 2022 IS/MND determined that with the identified standard measures in place and because the Original Project does not include facilities with foreseeable risk of accident conditions involving the release of hazardous materials into the environment, impacts relating to reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment would be less than significant (City of Palm Desert 2022). Because the Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three -story multifamily apartment buildings, the Modified Project would be consistent with the analysis of the 2022 IS/MND and impacts would be less than significant. There are no changed circumstances or new information relating to hazards and hazardous materials. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to reasonably foreseeable upset and accident conditions from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 44 NOVEMBER 2025 c) Would the project emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school? No New Impact. As discussed in the 2022 IS/MND, the proposed Project site is not located within one- quarter mile of an existing or proposed school and the Original Project is not expected to result in the release of hazardous emissions, materials, or waste during construction or operation. In addition, as described in the 2022 IS/MND and in Section 3.9(a) above, materials used during construction and operation would be stored and applied according to manufacturer’s instructions to mitigate the potential for release of hazardous materials or explosive reactions. As such, there would be no impact relating to emissions or handling of hazardous materials within one-quarter mile of an existing or proposed school (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three -story multifamily apartment buildings. There are no changed circumstances or new information relating to hazards and hazardous materials. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND; no impact would occur. Therefore, the Modified Project would not result in any new or different impacts relating to hazardous emissions or handling of hazardous materials within one -quarter mile of an existing or proposed school from those previously identified. No further analysis is required. d) Would the project be located on a site that is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or the environment? No New Impact. As discussed in the 2022 IS/MND, records searches of databases conducted for the Original Project did not identify any active hazardous materials sites in connection with the Project site and that are listed pursuant to Government Code 65962.5. There are listed properties within a 1-mile radius of the Project site, but due to their distance from the site and their status as “Completed-Case Closed” or as having no violations, the 2022 IS/MND determined that the Original Project would have no impact relating to hazardous materials sites complied pursuant to Government Code 65962.5 (City of Palm Desert 2022). The Project site is unchanged and there are no changed circumstances or new information as the Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. Based on the findings of the Modified Project’s 2025 Phase I Environmental Site Assessment (see Appendix D), which produced negative results for any hazards or hazardous material recognized environmental conditions on the Project site and found that the Project site was not listed on any environmental databases for hazardous materials, there are no changed circumstances or new information relating to hazards and hazardous materials . As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND; no impact would occur. Therefore, the Modified Project would not result in any new or different impacts relating to a hazardous materials site from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 45 NOVEMBER 2025 e) For a project located within an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard or excessive noise for people residing or working in the project area? No New Impact. The 2022 IS/MND determined that the Project site is not located near an existing airport or airport land use plan or in the vicinity of a private airstrip as the nearest airport facility, Bermuda Dunes Airport, is located approximately 5.25 miles to the southeast. As such, the Original Project would result in no impact relating to safety hazards or excessive noise from airport operations for people (City of Palm Desert 2022). There are no changed circumstances or new information, and the Project site is still not located within any airport land use plan or within two miles of any airport. The Modified Project would allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND; no impact would occur. Therefore, the Modified Project would not result in any new or different impacts from those previously identified. No further analysis is required. f) Would the project impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan? No New Impact. The 2022 IS/MND states that because the Original Project’s site design would be reviewed by the Palm Desert Fire Department for compliance with project-specific emergency access, water pressure, and similar requirements as a routine aspect of the City’s design review process, and because the Original Project would be required to prepare a traffic control plan as a condition of approval to be implemented throughout all construction activities to reduce conflicts with the surrounding land uses, emergency access and evacuation of the site would not be impaired by Original Project development. As such, impacts relating to emergency access and evacuation of the site were determined to be less than significant (City of Palm Desert 2022). There are no changed circumstances or new information relating to hazards and hazardous materials. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings and would still be required to go through the City’s design review process and prepare a traffic control plan as a condition of approval. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to conflicts with an adopted emergency response or evacuation plan from those previously identified. No further analysis is required. g) Would the project expose people or structures, either directly or indirectly, to a significant risk of loss, injury or death involving wildland fires? No New Impact. The 2022 IS/MND states that the Project site is surrounded by developed land primarily consisting of residential and open space/golf uses where it is not adjacent to or intermixed with wildlands, and that, according to the California Department of Forestry and Fire Protection’s (CAL FIRE) Fire Hazard Severity Zones in State Responsibility Area map, the Project site is not located in a Moderate, High, or Very Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 46 NOVEMBER 2025 High Fire Hazard Severity Zone. As such, the Original Project would have no impact relating to exposure of people or structures to wildland fires (City of Palm Desert 2022). The Project site is unchanged; thus, there are no changed circumstances or new information relating to wildland fires. The Modified Project is proposed to allow for the construction of one- to two-story single- family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND; no impact would occur. Therefore, the Modified Project would not result in any new or different impacts relating to exposure of people or structures to wildland fires from those previously identified. No further analysis is required. 3.10 Hydrology and Water Quality New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact X. HYDROLOGY AND WATER QUALITY – Would the project: a) Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality? b) Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin? c) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would: i) Result in a substantial erosion or siltation on- or off-site; ii) Substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off site; iii) Create or contribute runoff water which would exceed the capacity of existing or planned stormwater drainage systems or provide substantial additional sources of polluted runoff; or iv) Impede or redirect flood flows? Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 47 NOVEMBER 2025 New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation? e) Conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan? 2022 IS/MND Analysis Summary Potential impacts related to hydrology and water quality were analyzed in the 2022 IS/MN D on pages 55 through 62. All potential hydrology and water quality impacts were determined to be less than significant. Modified Project Analysis a) Would the project violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality? No New Impact. As described in the 2022 IS/MND, based on the Myoma Quadrangle, 7.5-Minute Series, USGS Topographic Map, the Original Project limits are absent of any mapped drainage flow lines, wash areas, or bodies of water, and based on the Federal Emergency Management Agency (FEMA) Flood Insurance Rate Map, the Project site occurs within a Zone X designation, corresponding to an area of minimal flood hazard, which is not considered a Special Flood Hazard Area (SFHA) or designated floodway. Construction and operation of the Original Project would be required to comply with the Clean Water Act (CWA), the National Pollutant Discharge Elimination System (NPDES), state, and local regulations to prevent violations or impacts to surface water quality standards and waste discharge requirement pertinent to surface or ground water quality. In addition, construction of the Original Project would be required to comply with the State’s most current NPDES CGP (Order No. 2009-0009-DWQ as amended by 2010-0014-DWQ and 2012-0006-DWQ), which involves implementation of a SWPPP that would reduce potential adverse impacts to surface water quality, including erosion and siltation, during construction from construction activities. The SWPPP utilizes specific BMPs and other necessary compliance measures such as erosion control, sediment control, storm drain inlet protection to prevent soil erosion and stormwater runoff pollution and would be reviewed for compliance with NPDES by the City (City of Palm Desert 2022). Furthermore, in order to obtain a grading permit, the Original Project would be required to submit and obtain approval for a WQMP in accordance with the standards of the Whitewater River Region Water Quality Management Plan for Urban Runoff, the Whitewater River Watershed Municipal Storm Sewer System (MS4) Permit, and the City’s on-site stormwater retention requirements (Municipal Code Chapter 27.12.056) (City of Palm Desert 2022). The 2022 IS/MND further states that the Original Project included multiple designated locations for stormwater retention that incorporated into the landscape design that would be required to comply with Municipal Code Chapter 27.12.056 and, if necessary, additional retention locations could be identified Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 48 NOVEMBER 2025 during the course of final engineering to adequately distribute the retention quantities. The Original Project’s engineering plans and WQMP would be subject to review and approval by the City. In summary, the Original Project would require plan-based compliance with the CWA, the NPDES, and local regulations to prevent impacts to water quality standards and the beneficial uses assigned to local receiving waters during construction and operation. Following review and approval by the City, the stormwater capture and management strategy for on- and off-site runoff would avoid waste discharge violations and impacts would therefore be less than significant (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. Development of the Modified Project would continue to be required to comply with and obtain coverage under all the applicable standards to reduce sediment and erosion, including the CWA, the NPDES, the Whitewater River Region Water Quality Management Plan for Urban Runoff, and the Whitewater River Watershed MS4 Permit. Through NPDES, the Modified Project would continue to be required to implement a SWPPP with erosion and sediment control measures to eliminate or control pollutants discharged from the Project site. Based on the Modified Project’s Preliminary Hydrology Report (Appendix E), the Modified Project would include catch basins to intercept and convey storm flows through storm drain popping to proposed underground retention storage chambers along the western boundary of the Project site, and to a proposed retention basin at the south end of the site. Further, there are no changed circumstances or any new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to violations of any water quality standards or waste discharge requirements from those previously identified. No further analysis is required. b) Would the project substantially decrease groundwater supplies or interfere substantially with groundwater recharge such that the project may impede sustainable groundwater management of the basin? No New Impact. As discussed in the 2022 IS/MND, the entire City and the Project site are within the domestic water service area of the CVWD, where the Coachella Valley Groundwater Basin (CVGB) is the primary source for the region’s domestic water purveyors, including CVWD. The CVGB is divided into four subbasins and the Project site is underlain by the Indio Subbasin, which represents approximately 76% of the total groundwater in the CVGB. Local groundwater management occurs under the framework of the 2020 Coachella Valley Regional Urban Water Management Plan (2020 RUWMP), which was drafted in collaboration with the six urban water suppliers in the Coachella Valley and describes the region’s water supplies, anticipated water demands through 2045, and each agency’s programs to encourage efficient water use. The CVWD developed the 2002 Coachella Valley Groundwater Management Plan in collaboration with other local stakeholders with a focus on reducing overdraft, preventing groundwater level decline, protecting water quality, and preventing land subsidence; the plan was updated in 2010 to document accomplishments in reducing overdraft and to address changed conditions (City of Palm Desert 2022). As further discussed in the 2022 IS/MND, the CVWD, the Coachella Water Authority, the Desert Water Agency (DWA), and the Indio Water Authority collectively represent the Indio Subbasin Groundwater Sustainability Agencies (GSAs). The GSAs submitted the 2010 Coachella Valley Water Management Plan (2010 CVWMP) accompanied by an Indio Subbasin Bridge Document as a Sustainable Groundwater Management Act (SGMA) compliant Alternative Plan to the California Department of Water Resources Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 49 NOVEMBER 2025 (DWR) who approved of the Alternative Plan with the requirement to submit an Alternative Plan Update by January 1, 2022, and every five years thereafter. Based on the Indio Subbasin SGMA documentation, the combined strategies have resulted in significant groundwater storage increases across the subbasin, allowing the region to comply with the framework for sustainable management (City of Palm Desert 2022). In 2019, the six urban water suppliers in the Coachella Valley collaborated on the 2020 RUWMP and in June of 2021, CVWD’s Water Shortage Contingency Plan was prepared to outline each agency’s actions that could be taken during a water shortage to reduce demands. CVWD collaborates with the operation and maintenance of three replenishment facilities serving the Indio Subbasin, the Whitewater River Groundwater Replenishment Facility, the Thomas E. Levy Groundwater Replenishment Facility, and the Palm Desert Groundwater Replenishment Facility, where artificial recharge is recognized by the water districts as one of the most effective methods available for preserving local groundwater supplies, reversing aquifer overdraft, and meeting customer demand. Combined with water conservation and efficiency requirements, individual projects can contribute to groundwater sustainability by implementing the required stormwater runoff retention and infiltration facilities (City of Palm Desert 2022). The 2022 IS/MND identified that the Original Project would be consistent with the City’s General Plan land use designation and noted that the existing groundwater replenishment facilities are not located near the Project site. As such, the 2022 IS/MND determined that regarding land use and location, Original Project implementation would not conflict with any existing or planned groundwater recharge facilities or associated infrastructure. In addition, the Original Project’s proposed residential uses and associated improvements would incorporate water conservation measures, including the use of low-flow plumbing fixtures, drought-tolerant (native) landscaping, water-efficient irrigation systems, and the Original Project would incorporate on-site retention facilities to ensure that stormwater runoff is adequately conveyed and retained on-site to avoid off-site urban runoff (City of Palm Desert 2022). Therefore, the 2022 IS/MND determined that the proposed facilities would not violate or interfere with groundwater supplies or recharge, and impacts would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings, which would reduce total groundwater supplies necessary to accommodate the Modified Project. The Modified Project would continue to comply with all applicable water plans identified in the 2022 IS/MND, and there are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to groundwater supplies from those previously identified. No further analysis is required. c) Would the project substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would: i) Result in substantial erosion or siltation on- or off-site? No New Impact. As discussed in the 2022 IS/MND, the Project site consists of relatively flat terrain that is absent of any mapped naturally occurring drainage or flood-prone patterns, and because the site is surrounded by residential communities, golf courses, and roadways, development of the Project site would not result in any alternation or obstruction of any river, stream, or other naturally occurring drainage pattern. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 50 NOVEMBER 2025 Based on the USGS Web Soil Survey, Project site soils consist of Myoma fine sand, corresponding to Hydrological Soil Group A which is characterized as having low runoff potential and high infiltration rates. The 2022 IS/MND states that site soils are not prone to existing erosion or siltation. As a standard practice, erosion and siltation would be prevented during construction and operation through required compliance plans. During construction, the SWPPP would include BMPs to prevent erosion and siltation and after construction, all construction-related soil disturbance would be properly restored to a stabilized condition consisting of permanent Original Project improvements. During operation, ongoing maintenance and operation of facilities would ensure that all permanently improved ground surfaces are adequately maintained. All Original Project runoff would be conveyed along engineered sheet flow or defined conveyances leading to the designated retention facilities (City of Palm Desert 2022). As such, the 2022 IS/MND determined that the Original Project would improve the Project site’s existing drainage, erosion, and siltation conditions, and impacts were therefore determined to be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not affect naturally occurring drainage or flood-prone patterns, or any river, stream, or other naturally occurring drainage pattern. The Modified Project would continue to be required to comply with NPDES and would implement a SWPPP and erosion and sediment control BMPs. Based on the Modified Project’s Preliminary Hydrology Report (Appendix E), the Modified Project would include catch basins to intercept and convey storm flows through storm drain popping to proposed underground retention storage chambers along the western boundary of the Project site, and to a proposed retention basin at the south end of the site. There are no changed circumstances or new information. As such, impacts associated with the development of the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to alteration of the existing drainage pattern of the area that would result in substantial erosion or siltation from those previously identified. No further analysis is required. ii) Substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off site? No New Impact. The 2022 IS/MND states that based on the evaluated FEMA Flood Insurance Rate Map, the Project site occurs within a Zone X designation, corresponding to an area of minimal flood hazard, which is not considered a SFHA or designated floodway. As a standard condition, the Original Project would be required to include the adequate improvements and site design features to handle the relevant hydrological conditions in a way that prevents inundation to the proposed structures and facilities. The Original Project would introduce impervious surfaces to a vacant property but would also include an appropriate storm drain system to adequately convey and retain the controlling storm event storm water volume from the site (City of Palm Desert 2022). Thus, the 2022 IS/MND determined that, following City engineering review, the Original Project would not substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site, and impacts would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to be required to include adequate improvements and site design features to handle hydrological conditions, including an appropriate storm drain system, and would not otherwise affect the rate or amount of surface runoff evaluated in the 2022 IS/MND. Based on the Modified Project’s Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 51 NOVEMBER 2025 Preliminary Hydrology Report (Appendix E), the Modified Project would include catch basins to intercept and convey storm flows through storm drain popping to proposed underground retention storage chambers along the western boundary of the Project site, and to a proposed retention basin at the south end of the site. Further, there is no change in circumstances nor any new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to alteration of the existing drainage pattern of the area or relating to a substantial increase in the rate of surface runoff that would result in flooding from those previously identified. No further analysis is required. iii) Create or contribute runoff water which would exceed the capacity of existing or planned stormwater drainage systems or provide substantial additional sources of polluted runoff? No New Impact. As discussed in the 2022 IS/MND, the City is a Permittee of the Whitewater River Watershed MS4 permit area. The vacant Project site is absent of any publicly operated storm drain facilities, and adjacent public streets, Frank Sinatra Drive to the north and Portola Avenue to the east, have off-site storm drain facilities primarily consisting of curb/gutter conveyances and public catch basins. The Original Project would increase impervious surfaces on the Project site; however, in compliance with City Municipal Code Chapter 27.12.056 (Required On-site Retention), the Original Project must include retention facilities sized to contain stormwater volume resulting from the controlling 100 -year, 24-hour storm event. The Original Project’s engineering plans and retention levels would be subject to review and approval by the City (City of Palm Desert 2022). The 2022 IS/MND determined that by complying with local retention requirements, the Original Project would not result in urban runoff that would exceed the MS4 capacity, and impacts would therefore be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not create or contribute runoff water in excess of the volumes evaluated in the 2022 IS/MND. The Modified Project would continue to be required to comply with the MS4 requirements and to implement erosion and sediment control BMPs. Based on the Modified Project’s Preliminary Hydrology Report (Appendix E), the Modified Project would include catch basins to intercept and convey storm flows through storm drain popping to proposed underground retention storage chambers along the western boundary of the Project site, and to a proposed retention basin at the south end of the site. Further, there is no change in circumstances nor any new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to alteration of the existing drainage pattern of the area or relating to a substantial increase in the rate of surface runoff that would result in flooding from those previously identified. No further analysis is required. iv) Impede or redirect flood flows? No New Impact. As discussed in the 2022 IS/MND, the Project site is located outside of any designated SFHA, floodway, or drainage flow lines as determined by FEMA and USGS maps. In addition, the Original Project would include the implementation of a storm drain system and associated retention facilities to meet the City’s engineering requirements and to provide protection to the new Original Project facilities. The Original Project’s grading and hydrology plans would be subject to review and approval by the City. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 52 NOVEMBER 2025 Therefore, the Original Project would not impede or redirect any flood flows, and impacts were determined to be less than significant (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not result in any effects relating to naturally occurring drainage patterns or impeding or redirecting flood flows. The Modified Project would continue to be required to comply with MS4 requirements to implement erosion and sediment control BMPs. Further, there is no change in circumstances nor any new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to alteration of the existing drainage pattern of the area or relating to a substantial increase in the rate of surface runoff that would result in flooding from those previously identified. No further analysis is required. d) In flood hazard, tsunami, or seiche zones, would the project risk release of pollutants due to project inundation? No New Impact. The 2022 IS/MND states that the Project site is not located near any coastal areas, any large body of water, and is not within a floodplain or SFHA, and therefore is not prone to flood, tsunami or seiche hazards and risks. The Original Project would incorporate on-site retention facilities and, given the residential nature of the Original Project, would not involve the storage or handling of any significant quantities of hazardous substances or petroleum products that would risk release of pollutants due to flooding. With these required improvements subject to City review and approval, impacts relating to release of pollutants in flood hazard, tsunami, or seiche zones were determined to be less than significant (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to be required to incorporate on-site retention facilities and would continue to not risk release of hazardous pollutants. Further, there are no changed circumstances nor any new information. As such, impacts associated with the development of the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to release of pollutants in flood hazard, tsunami, or seiche zones from those previously identified. No further analysis is required. e) Would the project conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan? No New Impact. As described in the 2022 IS/MND, the Original Project would be required to implement a WQMP to comply with the most current standards of the Whitewater River Watershed MS4 Permit and the City’s on-site retention standards. The combined retention capacity for the Original Project would meet the storm water volume resulting from the controlling 100 -year storm event, and the storm water retention facilities would ensure that only stormwater runoff is recharged into the ground through infiltration. As such, it was found that the Original Project would not conflict with regional groundwater management strategies or with the Indio Subbasin Sustainable Groundwater Management Plan, and impacts were therefore determined to be less than significant (City of Palm Desert 2022). Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 53 NOVEMBER 2025 The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to be required to incorporate on-site retention facilities and would not conflict with or obstruct implementation of a water quality control plan or sustainable groundwater management plan. Based on the Modified Project’s Preliminary Hydrology Report (Appendix E), the Modified Project would include catch basins to intercept and convey storm flows through storm drain popping to proposed underground retention storage chambers along the western boundary of the Project site, and to a proposed retention basin at the south end of the site. There are no changed circumstances or new information. As such, impacts associated with the development of the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to conflicts with water quality control or sustainable groundwater management plans from those previously identified. No further analysis is required. 3.11 Land Use and Planning New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact XI. LAND USE AND PLANNING – Would the project: a) Physically divide an established community? b) Cause a significant environmental impact due to a conflict with any land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental effect? 2022 IS/MND Analysis Summary Potential impacts related to land use and planning were analyzed in the 2022 IS/MND on pages 62 through 64. Potential impacts related to physically dividing an existing community, conflicts with any applicable land use plan, policy, or regulation, and conflicts with any applicable habitat conservation plan were determined be less than significant or were determined to have no impact. Modified Project Analysis a) Would the project physically divide an established community? No New Impact. As discussed in the 2022 IS/MND, the Original Project would be located on a vacant site within the City surrounded by single-family residential homes to the north, Desert Willow Golf Resort and the Retreat at Desert Willow Condominiums to the east, and a maintenance building and parking lot to the south. A partially disturbed vacant property exists west of the Project site and a vacant and undeveloped parcel of land is located to the northeast of the Project site. The Project site and the surrounding area are located within the City’s Planned Residential zoning district. Because the areas north and east of the Project Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 54 NOVEMBER 2025 site are developed and operate separately from each other, and because the vacant parcels west and northeast of the Project site are owned by different landowners, it was determined that the Original Project would not divide an established community, and impacts would therefore be less than significant (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not physically divide an established community. There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to disruption or division of an established community from those previously identified. No further analysis is required. b) Would the project cause a significant environmental impact due to a conflict with any land use plan, policy, or regulation adopted for the purpose of avoiding or mitigating an environmental effect? No New Impact. As analyzed in the 2022 IS/MND, the Original Project would consist of up to 402 dwelling units and residential amenities on 18.3 acres, which would result in a density of 21.5 du/ac and would be consistent with the Project site’s designated zoning of Planned Residential with 22 du/ac. In addition, the Original Project was determined to be compatible with all of the land use policies found within the City’s General Plan as the Original Project would provide pedestrian sidewalks and pathways, amenities available to residents that would reduce VMT by residents, and adequate site access points and recreational amenities. The Original Project would also comply with the intent and purpose of the Town Center Neighborhood General Plan land use designation that is intended to provide moderate to higher intensity neighborhood development that features a variety of housing choices, walkable streets, and mixed uses. Thus, the Original Project was determined to be consistent with regional plans and policies, and impacts were determined to be less than significant (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. Additionally, there are no changed circumstances or any new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to conflicts with an applicable land use plan, policy, or regulation from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 55 NOVEMBER 2025 3.12 Mineral Resources New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact XII. MINERAL RESOURCES – Would the project: a) Result in the loss of availability of a known mineral resource that would be a value to the region and the residents of the state? b) Result in the loss of availability of a locally important mineral resource recovery site delineated on a local general plan, specific plan or other land use plan? 2022 IS/MND Analysis Summary Potential impacts related to mineral resources were analyzed in the 2022 IS/MND on page 65. All potential mineral resources impacts were determined to result in no impact. Modified Project Analysis a) Would the project result in the loss of availability of a known mineral resource that would be of value to the region and the residents of the state? No New Impact. As discussed in the 2022 IS/MND, as shown in the Mineral Land Classification Map for the Original Project area, the Project site is located in Mineral Zone 3 (MRZ-3), which indicates an area contains mineral deposits, but that the mineral deposits cannot be evaluated from available data. There are no mining or extraction sites within the City and construction of the Original Project would rely on existing local and regional aggregate resources from permitted facilities (City of Palm Desert 2022). As such, the 2022 IS/MND determined that the Original Project is not expected to result in a considerable extraction and/or loss of known mineral resources considered important to the region or residents of California, and that there would be no impact relating to mineral resources. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three -story multifamily apartment buildings. There are no changed circumstances or new information. The analysis within the 2022 IS/MND remains accurate with respect to the Modified Project, and there would be no impact. Therefore, the Modified Project would not result in any new or different impacts relating to availability of a known mineral resource of value to the region or State from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 56 NOVEMBER 2025 b) Would the project result in the loss of availability of a locally important mineral resource recovery site delineated on a local general plan, specific plan or other land use plan? No New Impact. As discussed in the 2022 IS/MND and in Section 3.12(a) above, there are no mining or extraction sites within the City and construction of the Original Project would rely on existing local and regional aggregate resources from permitted facilities. Thus, it was determined that there would be no impact relating to mineral resources (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three -story multifamily apartment buildings. There are no changed circumstances or new information. The analysis within the 2022 IS/MND remains accurate with respect to the Modified Project, and there would be no impact. Therefore, the Modified Project would not result in any new or different impacts relating to availability of a locally important m ineral resource recovery site from those previously identified. No further analysis is required. 3.13 Noise New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact XIII. NOISE – Would the project result in: a) Generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? b) Generation of excessive groundborne vibration or groundborne noise levels? c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels? 2022 IS/MND Analysis Summary Potential impacts related to noise were analyzed in the 2022 IS/MND on pages 66 through 73. All potential noise impacts were determined to be less than significant (threshold a and b) or were determined to result in no impact (threshold c). Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 57 NOVEMBER 2025 Modified Project Analysis a) Would the project result in generation of a substantial temporary or permanent increase in ambient noise levels in the vicinity of the project in excess of standards established in the local general plan or noise ordinance, or applicable standards of other agencies? Construction Noise No New Impact. As discussed in the 2022 IS/MND, the City relies on the 24-hour Community Noise Equivalent Level (CNEL) to assess land use compatibility with transportation-related noise sources. The Original Project would result in development of a residential community with up to a maximum of 402 residential dwelling units in 13 buildings and various recreational amenities on a vacant site, the construction and operation of which would lead to increase noise levels in the Original Project area. The City has established land use noise standards and restrictions within the City’s General Plan Noise Element and within the City’s Noise Ordinance, Municipal Code Chapter 9.24, Noise Control, which the Original Project would be required to comply with. The Original Project would generate short -term noise increases compared to existing conditions on site from construction and along local roadways from the transport of workers and equipment to and from the Project site. Residential homes north and east of the Project site may be affected by construction noise (City of Palm Desert 2022). As stated in the 2022 IS/MND, during construction, the Original Project would be required to implement common industry standards to limit noise level increases. Approved haul routes would be used to minimize exposure of sensitive receptors to potential adverse noise levels from hauling operations. Standard earth- moving equipment for grading activities would be stored on site to reduce minimize disruption of surrounding land uses. As a standard requirement, the Original Project would be required to abide by the Municipal Code regulations on construction hours that limit activities to less sensitive times of the day and would be required to utilize industry standard-compliant construction equipment. As such, it was determined that construction noise impacts would be less than significant (City of Palm Desert 2022). Estimated noise and vibration levels from construction and operation of the Modified Project were assessed and are provided in Appendix H of this Addendum. . As detailed in Appendix H, construction noise levels are predicted to be no greater than an 8-hour average of 80 dBA Leq at the closest residences to the project and would therefore not exceed the Federal Transit Administration (FTA) recommended limit for construction noise exposure. In addition, the exposure would be short term, would occur during the less sensitive daytime period, and would cease upon construction completion. There would be no change in circumstances or new information relating to generation of temporary ambient noise levels. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in a less than significant impact. Therefore, the Modified Project would not result in any new or different impacts relating to generation of temporary ambient noise levels previously identified. No further analysis is required. Off-Site Traffic Noise As discussed in the 2022 IS/MND, the vacant Project site property is immediately surrounded by a mix of residential properties approximately 110 feet to the north and 130 feet to the west, a maintenance building and parking lot immediately south, and vacant undeveloped land immediately to the west. The residential communities north and east of the Project site are completely separated from the Project site by existing Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 58 NOVEMBER 2025 ROWs and block walls, where the block wall features would act to reduce noise levels generated by the surrounding roadways and the Original Project to the existing residential neighborhoods. Per Figure 7.1 of the City’s General Plan, Frank Sinatra Drive and Portola Avenue are considered major roadways within the City that will reach noise contours up to 70 A-weighted decibels (dBA) in the future (City of Palm Desert 2016a, 2022). As detailed in Appendix H, potential noise effects of the Modified Project from vehicular traffic were assessed using the Federal Highway Administration’s Traffic Noise Model version 2.5 (FHWA 2004) and the noise model results (summarized in Table 4 of Appendix H) indicate implementation of the Modified Project would not result in readily perceptible increases in traffic noise . Thus, a less-than-significant impact for proposed project-related off-site traffic noise increases affecting existing residences in the vicinity. There would be no change in circumstances or new information relating to generation of off-site traffic noise levels. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in a less than significant impact. Therefore, the Modified Project would not result in any new or different impacts relating to generation of off-site traffic noise. No further analysis is required On-site Traffic Noise As detailed in Appendix H to confirm compliance with the City of Palm Desert’s exterior noise standard for residential uses (65 dBA CNEL), traffic noise modeling for the Modified Project was conducted using the Federal Highway Administration’s Traffic Noise Model (FHWA TNM v2.5). All modeled receptor locations at the building facades were found to be below the 65 dBA CNEL exterior threshold, demonstrating that the project will meet the City’s standard for residential outdoor areas. When exterior noise levels are at or below 65 dBA CNEL, standard construction practices (such as dual-pane windows, insulated walls, and doors) ensure that interior noise levels will also comply with the 45 dBA CNEL requirement set forth by the California Building Code and City of Palm Desert. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would be required to comply with both exterior and interior noise standards and would likely result in reduced noise level increases compared to the Original Project evaluated in the 2022 IS/MND. There are no changed circumstances or new information relating to noise and the Modified Project would not result in any new or different impacts relating to exposure of people to or generation of noise levels in excess of established standards from those previously identified in the 2022 IS/MND. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would result in a less than significant impact. No further analysis is required. On-site (Stationary) Noise The 2022 IS/MND states that the Original Project is expected to increase noise levels from various sources during operation, including opening and closing of car doors, people talking, car alarms, trash pick -ups, operating heating, ventilation, and air conditioning (HVAC) units. The 2022 IS/MND determined that the Original Project would result in a less than significant impact related to generation of on-site stationary noise levels. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 59 NOVEMBER 2025 The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As detailed in Appendix H, the predicted sound exposure level from the combination of all operating condenser units as received by the nearest offsite single-family home would be 40 dBA Leq and thus would be compliant with the City’s nighttime threshold of 45 dBA hourly Leq. Under such conditions, the operation of residential air-conditioning units associated with the Modified Project would result in a less-than-significant impact. The Modified Project would not exacerbate the noise levels evaluated in the 2022 IS/MND and instead would likely result in reduced noise level increases compared to the Original Project. There are no changed circumstances or new information relating to noise. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to exposure of people to or generation of noise levels in excess of established standards from those previously identified. No further analysis is required. b) Would the project result in generation of excessive groundborne vibration or groundborne noise levels? No New Impact. As discussed in the 2022 IS/MND, construction of the Original Project would involve the temporary operation of vehicles and equipment that could result in localized, short-term vibration increase during the City’s established construction hours. All construction equipment staging would be located within the temporary construction limits, while vehicular and equipment access to the construction site would be restricted to only approved entry points to reduce disturbance to local traffic. The short-term increases in vibration and sound during construction would not result in a significant impact, and during operation the Original Project would not involve activities that would generate excessive groundborne vibration or noise. The Original Project would adhere to the requirements within the City’s Noise Ordinance (City of Palm Desert 2022). As such, the 2022 IS/MND determined that groundborne vibration and noise impacts would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not exacerbate the noise levels evaluated in the 2022 IS/MND and instead would likely result in reduced noise level increases compared to the Original Project. As detailed in Appendix H, anticipated construction vibration associated with the Modified Project would yield a maximum amplitude of 0.008 ips, which does not surpass the FTA-based construction vibration damage criterion of 0.2 ips PPV for “non-engineered timber and masonry buildings” (i.e., a building category consistent with most residential structures) (FTA 2018). There are no changed circumstances or new information relating to noise. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project woul d not result in any new or different impacts relating to generation of groundborne vibration or groundborne noise levels from those previously identified. No further analysis is required. c) For a project located within the vicinity of a private airstrip or an airport land use plan or, where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project expose people residing or working in the project area to excessive noise levels? No New Impact. As discussed in the 2022 IS/MND, based on the Riverside County Airport Land Use Commission website’s list of Current Compatibility Plans, the Project site is not located in the vicinity of an Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 60 NOVEMBER 2025 airport land use plan or private airstrip, or located within the 65 dBA CNEL contours of any public or private airports. As such, it was determined that the Original Project would not result in any impacts relating to exposure of people to excessive noise levels from an airport or airstrip; therefore, no impact would occur (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As detailed in Appendix H, the Modified Project would not expose people residing or working in the area to excessive noise levels as a result of a private airstrip or public use airport. There are no changed circumstances or new information relating to noise. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND; no impact would occur. Therefore, the Modified Project would not result in any new significant impacts relating to exposure of people to excessive noise levels from those previously identified. No further analysis is required. 3.14 Population and Housing New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact XIV. POPULATION AND HOUSING – Would the project: a) Induce substantial unplanned population growth in an area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)? b) Displace substantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere? 2022 IS/MND Analysis Summary Potential impacts related to population and housing were analyzed in the 2022 IS/MND on pages 74 and 75. Potential impacts related to inducing substantial unplanned population growth were determined to be less than significant, while potential impacts related to displacement of existing people or housing were determined to result in no impact. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 61 NOVEMBER 2025 Modified Project Analysis a) Would the project induce substantial unplanned population growth in an area, either directly (for example, by proposing new homes and businesses) or indirectly (for example, through extension of roads or other infrastructure)? No New Impact. As discussed in the 2022 IS/MND, the City’s General Plan EIR analyzed future growth under Chapter 4.13, Population, Employment, and Housing (City of Palm Desert 2022). The General Plan EIR Table 4.13-2 forecasts a population of 61,691 residents in the City by the year 2040 (City of Palm Desert 2016b). As analyzed in the 2022 IS/MND, in 2022, the City had a population of 50,889 with an average household size of approximately 2.05 people. Thus, the Original Project buildout of 394 dwelling units would result in approximately 808 new residents in the City, for an approximate population of 51,697 and a population increase of approximately 1.6%, which is still well below the 2040 population forecast. Although the Original Project would contribute to growth in the City, significant growth to population, housing, and employment is already anticipated within the City’s General Plan. In addition, the Original Project would be located in an area served by existing infrastructure and would therefore not induce growth by extending utilities into undeveloped areas (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to unplanned population growth would be less than significant. As of 2025, according to the California Department of Finance, the City has a population of 51,980 residents, which is still well below the 2040 population forecast for the City (DOF 2025). The Modified Project is proposed to allow for the construction of 156 one- to two-story single-family homes on the Project site instead of the originally envisioned 13 three-story multifamily apartment buildings. Given the City’s household average of 2.05 people, the Modified Project would result in approximately 320 new residents in the City, 488 fewer residents than the population evaluated for the Original Project in the 2022 IS/MND. As such, the Modified Project would not exacerbate planned growth. There are no changed circumstances or new information. Consistent with the analysis of the 2022 IS/MND, the Modified Project would result in a less than significant impact. Therefore, the Modified Project would not result in any new or different impacts relating to substantial population growth from those previously identified. No further analysis is required. b) Would the project displace substantial numbers of existing people or housing, necessitating the construction of replacement housing elsewhere? No New Impact. As discussed in the 2022 IS/MND, the Project site is vacant land designated by the City General Plan as Town Center Neighborhood and is zoned for Planned Residential. As such, the Original Project would not displace any existing people or housing, and it was determined that no impact relating to displacement of people or housing would occur (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three -story multifamily apartment buildings. There are no changed circumstances or new information relating to displacement of substantial numbers of existing people or housing. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND; no impact would occur. Therefore, the Modified Project would not result in any new or different impacts relating to displacement of substantial numbers of existing housing from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 62 NOVEMBER 2025 3.15 Public Services New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact XV. PUBLIC SERVICES – Would the project: ▪ Result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times, or other performance objectives for any of the public services: i) Fire protection? ii) Police protection? iii) Schools? iv) Parks? v) Other public facilities? 2022 IS/MND Analysis Summary Potential impacts related to fire protection, police protection, school services, parks, and other public facilities were analyzed in the 2022 IS/MND on pages 76 through 78. The 2022 IS/MND determined that potential impacts to other public facilities would result in no impact, while all other potential public services impacts were determined to be less than significant. Modified Project Analysis a) Would the project result in substantial adverse physical impacts associated with the provision of new or physically altered governmental facilities, need for new or physically altered governmental facilities, the construction of which could cause significant environmental impacts, in order to maintain acceptable service ratios, response times, or other performance objectives for any of the public services: Fire protection? No New Impact. As described in the 2022 IS/MND, development of the Original Project would result in an increase in demand for fire protection services; however, based on the Project site’s proximity to Riverside County Fire Department (RCFD) Fire Station 71 (approximately 0.65 miles south), and the existing infrastructure in place, the Original Project would be adequately served by fire protection services within a 5-minute response time, and no new or expanded facilities would be required. In addition, the Original Project was determined to comply with the City’s 2016 General Plan EIR and General Plan policies 7.2 and 7.8 as the Original Project would be reviewed by the City and RCFD officials to ensure adequate fire protection service and safety is provided. The Original Project would be required to implement all applicable fire safety requirements and comply with the applicable Fire Facilities Impact Fee in place at the time of construction (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to fire protection services would be less than significant. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 63 NOVEMBER 2025 The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not increase the demand for fire protection or emergency services beyond the levels evaluated in the 2022 IS/MND; in fact, the Modified Project would result in approximately 488 fewer residents than the Original Project, which would decrease the demand for fire protection services compared to the levels evaluated in the 2022 IS/MND. Similar to the Original Project, the Modified Project will be required to implement all applicable fire safety requirements and comply with the applicable Fire Facilities Impact Fee in place at the time of construction; therefore, potential impacts to fire protection services would be adequately mitigated and fire protection facilities would be able to adequately provide fire protection services to residents of the Modified Project. There are no changed circumstances or new information relating to fire protection. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to fire protection services from those previously identified. No further analysis is required. Police protection? No New Impact. As discussed in the 2022 IS/MND, development of the Original Project would result in an increase in demand for police protection services; however, the demand is not expected to hinder the City’s ability to provide police protection services and would not result in a need for new or expanded police facilities. The Project site is located in a developed urban area and is surrounded by development already served by the Palm Desert Police Department. The Original Project was determined to comply with the 2016 General Plan EIR and General Plan policies 7.2 and 7.8, and would be reviewed by the City and police staff to ensure adequate service is maintained. The Original Project would also be required to comply with Development Impact Fees in place at the time of construction (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to police protection services would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not increase the demand for police protection services beyond the levels evaluated in the 2022 IS/MND; in fact, the Modified Project would result in approximately 488 fewer residents than the Original Project, which would decrease the demand for police protection services compared to the levels evaluated in the 2022 IS/MND. There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to police protection services from those previously identified. No further analysis is required. Schools? No New Impact. As described in the 2022 IS/MND, school services for the Original Project would be served by Desert Sands Unified School District (DSUSD) and has the potential to generate approximately 142 new students based on DSUSD’s Student Generation Rate. Even though middle schools in the school district are over capacity by 50 students and Palm Desert High School is over capacity by 67 students, the additional 142 students from Original Project implementation would not necessitate the construction of new school facilities. Further, the Original Project would be required to comply with DSUSD’s AB 2926 and Senate Bill 50 development fees (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to schools would be less than significant. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 64 NOVEMBER 2025 The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not increase the demand for school services beyond the levels evaluated in the 2022 IS/MND; in fact, the Modified Project would result in approximately 488 fewer residents than the Original Project, which would decrease the number of students generated compared to the levels evaluated in the 2022 IS/MND. Based on a letter from DSUSD dated September 24, 2025, payment of the school mitigation fee by the developer is required to ensure adequate school facilities are available for the anticipated new students resulting from implementation of the Modified Project. Similar to the Original Project, the Modified Project developer will be required to pay the school mitigation fee; therefore, potential impacts to DSUSD facilities would be adequately mitigated and DSUSD facilities would be able to adequately provide school services to new students resulting from implementation of the Modified Project. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to schools from those previously identified. No further analysis is required. Parks? No New Impact. As discussed in the 2022 IS/MND, the City provides a wide range of park and recreational facilities and amenities, including over 200 acres of parkland and over 25 miles of multipurpose trails. The Original Project would also provide additional recreational amenities on site, including a clubhouse, a fitness center, a community pool, open space areas, and more (City of Palm Desert 2022). The 2016 General Plan EIR analyzed the existing parkland and determined that parkland in the City is adequate, exceeds the amount of parkland required by the Quimby Act, and new residents would not significantly impact park facilities (City of Palm Desert 2016b). The Original Project would also be required to comply with the City’s Development Impact Fees, which include a Park & Recreation Fee (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to parks and recreation would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not significantly increase the demand for parks beyond the levels evaluated in the 2022 IS/MND; in fact, the Modified Project would result in approximately 488 fewer residents than the Original Project, which would decrease the demand for parks compared to the levels evaluated in the 2022 IS/MND. Further, there are no changed circumstances or new information related to parks. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to parks from those previously identified. No further analysis is required. Other public facilities? No New Impact. The 2022 IS/MND states that no increase in government services or other public facilities is expected beyond those evaluated in this section. It was determined that no impact to other public facilities would occur (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would not increase the demand on public facilities. There are also no changed Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 65 NOVEMBER 2025 circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND; no impact would occur. Therefore, the Modified Project would not result in any new or different impacts relating to other public facilities from those previously identified. No further analysis is required. 3.16 Recreation New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact XVI. RECREATION. a) Would the project increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated? b) Does the project include recreational facilities or require the construction or expansion of recreational facilities which might have an adverse physical effect on the environment? 2022 IS/MND Analysis Summary Potential impacts related to recreation were analyzed in the 2022 IS/MND on page 79. The 2022 IS/MND determined that potential impacts relating to increased use of existing parks or recreational facilities would be less than significant, while potential impacts relating to the construction or expansion of recreational facilities were determined to result in no impact. Modified Project Analysis a) Would the project increase the use of existing neighborhood and regional parks or other recreational facilities such that substantial physical deterioration of the facility would occur or be accelerated? No New Impact. As discussed in the 2022 IS/MND, the City provides a wide range of recreational opportunities, including golf courses, bikeways, and parkland, and is located near thousands of acres of National Park and National Monument lands, United States Forest Service wilderness lands, as well as state, regional, and tribal parks that have miles of hiking, biking, and equestrian trails. The Original Project also proposed additional on-site recreational amenities, including a clubhouse, fitness center, community pools, yoga lawn, putting green, grilling/fire pit areas, a dog park, and recreational courts/games. The Original Project may lead to an incremental increase in use and in physical deterioration of the City’s public recreational facilities; however, the Original Project would comply with the City’s parkland Quimby Act fees and other development impact fees (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to substantial physical deterioration of parks and recreational facilities would be less than significant. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 66 NOVEMBER 2025 The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project does not include the previously proposed clubhouse and the fitness center but still provides a total of 2.73 acres of common open space, including a larger recreation area at the center of the proposed development. The Modified Project would not increase the demand on recreational facilities beyond the levels analyzed in the 2022 IS/MND and would continue to comply with the City’s parkland Quimby Act fees and other development impact fees. There are no changed circumstances or new information related to recreation. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to existing neighborhood and regional parks or other recreational facilities from those previously identified. No further analysis is required. b) Does the project include recreational facilities or require the construction or expansion of recreational facilities, which might have an adverse physical effect on the environment? No New Impact. The proposed Project site is within the City’s Town Center Neighborhood land use designation and would not involve the development of a City recreational facility (City of Palm Desert 2022). As such, the 2022 IS/MND determined that the Original Project would not involve construction or expansion of a recreational facility owned by the City, and therefore no impact would occur. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project is still proposed within the City’s Town Center Neighborhood land use designation and would not involve the development of a City recreational facility. There are no changed circumstances or new information. As such, impacts associated with the development of the Modified Project woul d be consistent with the analysis in the 2022 IS/MND; no impact would occur. Therefore, the Modified Project would not result in any new or different impacts relating to construction or expansion of recreational facilities from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 67 NOVEMBER 2025 3.17 Transportation New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact XVII. TRANSPORTATION – Would the project: a) Conflict with a program, plan, ordinance or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities? b) Conflict or be inconsistent with CEQA Guidelines § 15064.3, subdivision (b)? c) Substantially increase hazards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)? d) Result in inadequate emergency access? 2022 IS/MND Analysis Summary Potential impacts related to transportation were analyzed in the 2022 IS/MND on pages 80 through 93. The 2022 IS/MND determined that all potential transportation impacts would be less than significant. Modified Project Analysis a) Would the project conflict with a program, plan, ordinance, or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian facilities? No New Impact. As discussed in the 2022 IS/MND, the Project site is bound by Frank Sinatra Drive to the north and Portola Avenue to the east, and both roadways are designated as Balanced Arterials, which are described as having four lanes undivided with bicycle lanes. The Project site is served with bus services by Sunline Transit with the closest bus stop being located approximately 1 mile east of the Project site at the northeast corner of Cook Street and Frank Sinatra Drive. Shared sidewalks would be constructed along the Original Project’s street frontage, consistent with the General Plan Roadway Cross-sections, and each Original Project access point would include a crosswalk for nearby residents. Existing on-street bike lanes are generally located throughout the Original Project’s study area, and although bike lanes adjacent to the site might be temporarily impacted during construction, they would be returned to their existing condition after construction is completed (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts related to pedestrian, bicycle, and transit facilities would be less than significant. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 68 NOVEMBER 2025 The 2022 IS/MND also states that implementation of the Original Project is not anticipated to directly impact the Riverside County Congestion Management Plan (CMP) or any CMP facilities. Any potential impacts are expected to be offset by fees, such as the Transportation Uniform Mitigation Fees (TUMF), which are required as a standard condition. In addition, as a standard condition, the project applicant would participate in the funding or construction of off-site improvements through the payment of TUMF and the City’s Development Impact Fees, or through a fair share contribution as directed by the City (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to conflicts with an applicable program, plan, ordinance, or policy addressing the circulation system would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project, which would generate less trips from a reduced number of residents, would still be required to adhere to the Riverside County CMP and be required to pay the applicable TUMF and City Development Impact Fees. There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to conflicts with an applicable program, plan, ordinance, or policy addressing the circulation system from those previously identified. No further analysis is required. b) Would the project conflict or be inconsistent with CEQA Guidelines Section 15064.3, subdivision (b)? No New Impact. As discussed in the 2022 IS/MND, the City utilizes Riverside County Department of Transportation’s Transportation Analysis Guidelines for Level of Service and Vehicle Miles Traveled, which sets forth screening criteria under which projects are not required to submit detailed VMT analysis. Map- based screening is also used by the City through the sub-regional Riverside Transportation Analysis Model (RIVTAM) to measure VMT performance within individual Transportation Analysis Zones (TAZs). The Original Project is located within RIVTAM TAZ 4676, which experiences less than the County average of VMT per capita. For projects that are found to reside in an area of low VMT generation, the Original Project is required to verify that the proposed development is consistent with the underlying land use assumptions contained in the low-VMT TAZ. Urban Crossroads reviewed the land use assumptions contained in the Original Project TAZ and found it to be consistent with the Original Project’s residential land use; thus, the Original Project was eligible to be screened out of VMT analysis (City of Palm Desert 2022). As such, the 2022 IS/MND determined that potential impacts relating to CEQA Guidelines Section 15064.3, subdivision (b) would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. As stated in the Site Access and Vehicle Miles Traveled Analysis prepared for the Modified Project, because the Modified Project would continue to meet the City’s criteria to be screened out from VMT analysis as it is located in a low VMT area consistent with the City and Riverside County’s transportation guidelines, further VMT analysis was not required (Appendix F). There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 69 NOVEMBER 2025 c) Would the project substantially increase hazards due to a geometric design feature (e.g., sharp curves or dangerous intersections) or incompatible uses (e.g., farm equipment)? No New Impact. The 2022 IS/MND states that a queuing analysis was conducted for the Original Project. It was determined that the Original Project would not create a substantial increase in hazards due to a design feature as the Original Project’s access points would be located with adequate site distances and Original Project-generated traffic would be consistent with the existing traffic patterns in the area. The Original Project’s internal circulation system would provide adequate access for fire services and sharp curves are avoided by design guidelines. In addition, a Traffic Control Plan might be required as a condition of approval to be implemented throughout all construction activities (City of Palm Desert 2022). As stated in the 2022 IS/MND, following implementation of the recommendations within the Original Project-specific Traffic Analysis and following review and approval by the City, impacts relating to increased hazards due to a geometric design feature would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. A site access and queuing analysis has been provided for the Modified Project in the Site Access and Vehicle Miles Traveled Analysis (Appendix F). The memo includes recommendations for northbound left turn and southbound deceleration turn lane at the project access driveway along Portola Avenue, consistent with the Original Project. The Modified Project would not increase hazards due to a geometric design feature in the City. Further, there are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to substantially increasing hazards due to a design feature from those previously identified. No further analysis is required. d) Would the project result in inadequate emergency access? No New Impact. As stated in the 2022 IS/MND, the Project site provides adequate emergency access via arterial and enhanced roadways, and design guidelines would further ensure that adequate emergency access is provided by the Original Project. Project plans would be reviewed and approved by the Riverside County Fire Department, the Palm Desert Police Department, and the City to ensure adequate safety is addressed. The Original Project would also be required to comply with the City’s General Plan and design guidelines policies (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to emergency access would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project, which would generate less trips from a reduced number of residents, would still go through the review and approval process and would still be required to follow City General Plan and design guidelines policies. The Modified Project would not result in inadequate emergency acce ss in the City. Further, there are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to inadequate emergency access from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 70 NOVEMBER 2025 3.18 Tribal Cultural Resources New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact XVIII. TRIBAL CULTURAL RESOURCES. ▪ Would the project cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public Resources Code § 21074 as either a site, feature, place, cultural landscape that is geographically defined in terms of the size and scope of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that is: a) Listed or eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in Public Resources Code section 5020.1(k), or b) A resource determined by the lead agency, in its discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of Public Resources Code § 5024.1. In applying the criteria set forth in subdivision (c) of Public Resource Code § 5024.1, the lead agency shall consider the significance of the resource to a California Native American tribe. 2022 IS/MND Analysis Summary Potential impacts related to tribal cultural resources were analyzed in the 2022 IS/MND on page 94. The 2022 IS/MND determined that all potential impacts to tribal cultural resources would be less than significant. Modified Project Analysis Would the project cause a substantial adverse change in the significance of a tribal cultural resource, defined in Public Resources Code Section 21074 as either a site, feature, place, cultural landscape that is geographically defined in terms of the size and scope of the landscape, sacred place, or object with cultural value to a California Native American tribe, and that is: a) Listed or eligible for listing in the California Register of Historical Resources, or in a local register of historical resources as defined in Public Resources Code Section 5020.1(k)? No New Impact. As discussed in the 2022 IS/MND, CRM Tech conducted a project and site-specific study on historical and archaeological resources, including a records search, Native American scoping, and historical background research and an intensive-level field survey. The field survey provided negative Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 71 NOVEMBER 2025 results and records searches indicated that no additional cultural resource studies occurred within the Original Project area between 2015 and 2018. The data further indicated that no additional historical or archaeological resources have been identified within the Original Project area or a half-mile radius, and the only known cultural resources within a half mile of the Original Project area is Site 33 -005080, located approximately 0.25 miles outside of the Project area (City of Palm Desert 2022). As such, the 2022 IS/MND determined that the Original Project would not impact cultural resources, and impacts relating to historical resources would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. A Cultural Restraints Analysis was prepared for the Modified Project in August 2025 (Appendix C) with an updated records search of information housed at the South Coastal Information Center (SCIC) for the Project area and the 1.0-mile search radius of the Project area, an update search of the Sacred Lands File by the Native American Heritage Commission (NAHC), and a review of historic aerial photographs and historic topographic maps. The archival review identified no archaeological resources within the Project area. Based on the records search results and archival review, Dudek concurs with CRM’s (2022) finding that impacts to archaeological resources would be less than significant. The Modified Project would not impact historical resources and there are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to historical resources from those previously identified. No further analysis is required. b) A resource determined by the lead agency, in its discretion and supported by substantial evidence, to be significant pursuant to criteria set forth in subdivision (c) of Public Resources Code Section 5024.1? In applying the criteria set forth in subdivision (c) of Public Resource Code Section 5024.1, the lead agency shall consider the significance of the resource to a California Native American tribe. No New Impact. The 2022 IS/MND states that to ensure all significant tribal resources are identified and fully considered, the City initiated a 30-day government to government tribal consultation period with local tribes; however, requests for consultation were not received from tribes and, based on the analysis above in Section 3.18(a), the Original Project site-specific historical and archaeological resources study, impacts relating to tribal cultural resources were determined to be less than significant (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. Modified Project. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to historical resources from those previously identified. Although not required for an Addendum, the City initiated a 30-day government to government tribal consultation period with local tribes in letters dated August 20, 2025 (Appendix I). In a letter to the City dated October 3, 2025, Agua Caliente Band of Cahuilla Indians (Agua Caliente) requested that an approved Agua Caliente Native American Cultural Resource Monitor be present during any ground disturbing construction activities for the Modified Project and that any discovered Tribal cultural material be reburied on-site, when feasible. As detailed in the project description above (see Section 2.2, Modified Project Changes), the requests of Agua Caliente have been incorporated into the Modified Project as a project design feature (PDF TCR-1). As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 72 NOVEMBER 2025 and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to Tribal cultural resources. No further analysis is required. 3.19 Utilities and Service Systems New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact XIX. UTILITIES AND SERVICE SYSTEMS – Would the project: a) Require or result in the relocation or construction of new or expanded water, wastewater treatment or storm water drainage, electric power, natural gas, or telecommunications facilities, the construction or relocation of which could cause significant environmental effects? b) Have sufficient water supplies available to serve the project and reasonably foreseeable future development during normal, dry and multiple dry years? c) Result in a determination by the waste water treatment provider, which serves or may serve the project that it has adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments? d) Generate solid waste in excess of state or local standards, or in excess of the capacity of local infrastructure, or otherwise impair the attainment of solid waste reduction goals? e) Comply with federal, state, and local statutes and regulations related to solid waste? 2022 IS/MND Analysis Summary Potential impacts related to utilities and service systems were analyzed in the 2022 IS/MND on pages 95 through 98. The 2022 IS/MND determined that all potential utilities and service systems impacts would be less than significant. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 73 NOVEMBER 2025 Modified Project Analysis a) Would the project require or result in the relocation or construction of new or expanded water, waste water treatment or storm water drainage, electric power, natural gas, or telecommunications facilities, the construction or relocation of which could cause significant environmental effects? No New Impact. As discussed in the 2022 IS/MND, domestic water would be provided to the Project site by connection into the existing water and sewer main located along Frank Sinatra Drive, and electric power, telecommunications, and natural gas connections are also located within proximity of the Project site. The Original Project was designed to include an on-site stormwater retention system that would comply with the City’s drainage requirements and be designed to provide enough water storage for the 100-year controlling storm event. No relocation or new construction of water, wastewater, electric power, natural gas, or telecommunications facilities would be needed for the Original Project (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to relocation or construction of new or expanded utilities facilities would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to include an on-site stormwater retention system and connection to the surrounding utility connections. The Modified Project would not require or result in the relocation or construction of new or expanded utilities facilities. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Further, there are no changed circumstances or new information. Thus, the Modified Project would not result in any new or different impacts relating to construction or expansion of water or wastewater treatment facilities from those previously identified. No further analysis is required. b) Would the project have sufficient water supplies available to serve the project and reasonably foreseeable future development during normal, dry and multiple dry years? No New Impact. As discussed in the 2022 IS/MND, groundwater is the primary source of domestic water supply in the Coachella Valley where CVWD is the largest provider of potable water. Water in the region is managed through CVWD’s 2020 RUWMP. CVWD has achieved its 2020 wa ter use target but continues to implement demand management measures to reduce water use per capita. Further, CVWD anticipates that single-family and multifamily residences would use less water than existing properties due to the mandated use of high-efficiency plumbing fixtures under the CalGreen building standards and reduced landscaping water use mandated by CVWD’s Landscape Ordinance. The Original Project would connect into existing infrastructure on Frank Sinatra Drive through on-site improvements and would comply with the existing water management program in place (City of Palm Desert 2022). As further discussed in the 2022 IS/MND, the Original Project was estimated to use approximately 46,327 gallons of water per day, or 51.89 acre-feet per year (AFY), and was found to be well within the CVWD’s total projected water use of 123,461 AFY for 2025, which includes assumptions for new development. The City’s Municipal Code includes several ordinances to ensure water supply and efficiency measures are in place, including Section 24.04.010, which codifies CVWD’s Landscape Ordinance. Compliance with these ordinances would ensure that development reduces water demand to meet target demands. Project infrastructure and design would be consistent with CVWD’s requirements and water management plan, and Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 74 NOVEMBER 2025 the Original Project would be reviewed and approved by CVWD and the City to assure compliance with all applicable requirements. The Original Project would be expected to implement water conservation measures and pay applicable water installation and connection fees to CVWD (City of Palm Desert 2022). As such, the 2022 IS/MND determined that no new infrastructure would be required for the Original Project, and that impacts relating to water supply would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project, which would generate a reduced demand for water from a reduced number of residents, would continue to comply with the requirements of the CVWD’s Landscape Ordinance, water management plan, and the City’s Municipal Code. There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Thus, the Modified Project would not result in any new or different impacts relating to construction or expansion of stormwater drainage facilities from those previously identified. No further analysis is required. c) Would the project result in a determination by the waste water treatment provider which serves or may serve the project that it has adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments? No New Impact. As discussed in the 2022 IS/MND, the Original Project would be served by CVWD’s wastewater reclamation system, which includes over 1,000 miles of sewer pipeline and treats approximately 17 million gallons per day (mgd). Wastewater from the City is conveyed to CVWD’s Cook Street Water Reclamation Plant No. 10 (WRP-10), which treats an average of 10 mgd and has a capacity of 18 mgd. The Original Project would connect to the existing sewer main on Frank Sinatra Drive and is expected to generate approximately 32,430 gallons of wastewater per day, or approximately 0.03 mgd. This increase would be treated well within the capacity of WRP-10. The Original Project would be reviewed by CVWD and the City to ensure adequate wastewater capacity and compliance with current wastewater treatment requirements and would be required to pay applicable sewer and water installation and connection fees to CVWD (City of Palm Desert 2022). As such, the 2022 IS/MND determined that no new infrastructure would be required for the Original Project, and that impacts relating to adequate wastewater treatment capacity would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project, which would generate a reduced demand for wastewater from a reduced number of residents, would not significantly affect wastewater systems or capacity. Additionally, there are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Thus, the Modified Project would not result in any new or different impacts relating to adequate wastewater treatment capacity from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 75 NOVEMBER 2025 d) Would the project generate solid waste in excess of state or local standards, or in excess of the capacity of local infrastructure, or otherwise impair the attainment of solid waste reduction goals? No New Impact. As discussed in the 2022 IS/MND, solid waste disposal and recycling services for the City are provided by Burrtec, and solid waste and recycling collected from the Project site would be hauled to the Edom Hill Transfer Station where waste is then sent to a permitted landfill or recycling facility outside of the Coachella Valley. The analysis determined that the Original Project could generate up to 162.36 tons of solid waste; although, this analysis did not take into account the required solid waste reduction efforts required by the State of California. As part of its long-range planning and management activities, the Riverside County Waste Management Department (RCWMD) ensures that the County has a minimum of 15 years of capacity for future landfill disposal. At the time of drafting the 2022 IS/MND, the most recent 15- year projection by the RCWMD indicated that no additional waste capacity was needed at existing facilities through 2024 as a disposal capacity of 28,561,626 tons would remain at existing facilities in the year 2024 (City of Palm Desert 2022). As such, the Original Project would comply with all applicable solid waste statutes, policies, and guidelines, and the 2022 IS/MND determined that impacts relating to solid waste would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project, which would generate less solid waste from a reduced number of residents, would not generate solid waste in excess of state or local standards or in excess of existing capacity. There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Thus, the Modified Project would not generate solid waste in excess of State or local standards from those previously identified. No further analysis is required. e) Would the project comply with federal, state, and local management and reduction statutes and regulations related to solid waste? No New Impact. As discussed in the 2022 IS/MND and above in Section 3.19(d), the most recent 15-year projection by the RCWMD indicated that no additional waste capacity was needed at existing facilities through 2024 as a disposal capacity of 28,561,626 tons would remain at existing facilities in the year 2024. In addition, the Original Project would comply with all applicable solid waste statutes, policies, and guidelines (City of Palm Desert 2022). Thus, the 2022 IS/MND determined that impacts relating to compliance with applicable solid waste regulations would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project, which would generate less solid waste from a reduced number of residents, would comply with federal, state, and local statutes and regulations related to solid waste. There is no other new information or changed circumstances. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Thus, the Modified Project would not result in any new or different impacts relating to compliance with applicable solid waste regulations from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 76 NOVEMBER 2025 3.20 Wildfire New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact XX. WILDFIRE – If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the project: a) Substantially impair an adopted emergency response plan or emergency evacuation plan? b) Due to slope, prevailing winds, and other factors, exacerbate wildfire risks, and thereby expose project occupants to, pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire? c) Require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency water sources, power lines or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment? d) Expose people or structures to significant risks, including downslope or downstream flooding or landslides, as a result of runoff, post-fire slope instability, or drainage changes? 2022 IS/MND Analysis Summary Potential impacts related to wildfire were analyzed in the 2022 IS/MND on pages 98 and 99. The 2022 IS/MND determined that all potential wildfire impacts would be less than significant. Modified Project Analysis a) Would the project substantially impair an adopted emergency response plan or emergency evacuation plan? No New Impact. As discussed in the 2022 IS/MND, the Project site is located in a primarily developed area within the City and is characterized by vacant land with scattered, low-lying desert vegetation. According to CAL FIRE maps, the Project site is located in a Local Responsibility Area and is not located in or near a State responsibility area or lands classified as a Moderate, High, or Very High Fire Hazard Severity Zone, and no impact in this regard would occur. According to the Riverside County General Plan, wildfire susceptibility is moderate to low in the Coachella Valley and desert regions on the western and eastern sides of the Salton Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 77 NOVEMBER 2025 Sea. Thick vegetation and steep slopes do not occur in areas adjacent to the Project site. Because the Santa Rosa Mountains (approximately 3 miles southwest of the Project site) were determined to not be conducive to wildfires, it was determined that wildfires are not expected to occur within the City or at the Project site. The Original Project would be developed in accordance with the latest California building standards and fire code and would not be expected to expose people to pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire; less than significant impacts would occur (City of Palm Desert 2022). In addition, the 2022 IS/MND states that the Original Project would connect to existing water and sewer infrastructure located within Frank Sinatra Drive and that the proposed infrastructure would not exacerbate fire risk or result in short- or long-term impacts to the environment, and would in fact decrease fire risk on the Project site. The Project site is connected to an existing network of streets and would not impair implementation of or physically interfere with an adopted emergency response or evacuation plan and the Original Project would not include installation or maintenance of infrastructure that may exacerbate fire risk; less than significant impacts would occur. The Project site is located on flat ground with no slopes immediately surrounding the site; thus, risks associated with slope instability would not be significant and impacts relating to exposing people or structure to significant risks from wildfires would be less than significant (City of Palm Desert 2022). As such, the 2022 IS/MND determined that all wildfire impacts would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Project site is still not located in a State Responsibility Area or in a State-designated Very High Fire Hazard Severity Zone (CAL FIRE 2024). Thus, the Modified Project is not anticipated to result in significant impacts associated with the impairment of an adopted emergency response plan or emergency evacuation plan. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. There are no changed circumstances or new information. Thus, the Modified Project would not result in any new or different impacts relating to an adopted emergency response plan or emergency evacuation plan from those previously identified. No further analysis is required. b) Due to slope, prevailing winds, and other factors, would the project exacerbate wildfire risks, and thereby expose project occupants to pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire? No New Impact. As discussed in the 2022 IS/MND and above in Section 3.20(a), thick vegetation and steep slopes do not occur in areas adjacent to the Project site, and the Santa Rosa Mountains were determined to not be conducive to wildfires; thus, it was determined that wildfires are not expected to occur within the City or at the Project site. The Original Project would be developed in accordance with the latest California building standards and fire code and would not be expected to expose people to pollutant concentrat ions from a wildfire or the uncontrolled spread of a wildfire; less than significant impacts would occur (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Project site continues to not have slopes or thick vegetation that could serve as fuel for a fire. The Modified Project Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 78 NOVEMBER 2025 would still be required to adhere to the latest California building standards and fire code and would therefore not expose people to pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. There are no changed circumstances or new information. Thus, the Modified Project would not result in any new or different impacts relating to wildfire exacerbation and exposure of people to pollutant concentrations from a wildfire or the uncontrolled spread of a wildfire from those previously identified. No further analysis is required. c) Would the project require the installation or maintenance of associated infrastructure (such as roads, fuel breaks, emergency water sources, power lines, or other utilities) that may exacerbate fire risk or that may result in temporary or ongoing impacts to the environment? No New Impact. As discussed in the 2022 IS/MND and above in Section 3.20(a), the Original Project would connect to existing water and sewer infrastructure located within Frank Sinatra Drive and the proposed infrastructure would not exacerbate fire risk or result in short- or long-term impacts to the environment; in fact, the infrastructure would decrease fire risk on the Project site (City of Palm Desert 2022). As such, the 2022 IS/MND determined that impacts relating to the installation or maintenance of infrastructure that may exacerbate fire risk or result in ongoing impacts to the environment would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to connect to the existing infrastructure adjacent to the Project site along Frank Sinatra Drive. The Modified Project would still be required to adhere to the latest California building standards and fire code. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. There are no changed circumstances or new information. Thus, the Modified Project would not result in any new or different impacts relating to installation or maintenance of infrastructure that may exacerbate fire risk or result in ongoing impacts to the environment from those previously identified. No further analysis is required. d) Would the project expose people or structures to significant risks, including downslope or downstream flooding or landslides, as a result of runoff, post-fire slope instability, or drainage changes? No New Impact. As discussed in the 2022 IS/MND and above in Section 3.20(a), the Project site is located on flat ground with no slopes immediately surrounding the site and implementation of the proposed infrastructure would reduce fire risk on the Project site. As such, risks associated with slope instability would not be significant and impacts relating to exposing people or structure to significant risks from wildfires would be less than significant (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Project site continues to not have slopes and similar to the previously proposed infrastructure, the Modified Project would connect to existing infrastructure connections along Frank Sinatra Drive. The Modified Project would still be required to adhere to the latest California building standards and fire code. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. There are no changed circumstances or new information. Thus, the Modified Project would not result in any new or different impacts relating to exposure of people or str uctures to significant wildfire risks from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 79 NOVEMBER 2025 3.21 Mandatory Findings of Significance New Potentially Significant Impact New Mitigation is Required No New Impact Reduced Impact XXI. MANDATORY FINDINGS OF SIGNIFICANCE a) Does the project have the potential to substantially degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, substantially reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory? b) Does the project have impacts that are individually limited, but cumulatively considerable? (“Cumulatively considerable” means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects.) c) Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly? 2022 IS/MND Analysis Summary Impacts to biological resources were analyzed in the 2022 IS/MND on pages 23 through 27. The 2022 IS/MND determined that impacts relating to a substantial adverse effect on any species identified as a candidate, sensitive, or special-status species in local or regional plans, policies, or regulations would be less than significant with mitigation incorporated, while all other potential impacts to biological resources were determined to result in no impact. Impacts to cultural resources were analyzed in the 2022 IS/MND on pages 28 and 29, and all potential cultural resources impacts were determined to be less than significant. Impacts to paleontological resources were analyzed in the 2022 IS/MND on page 45 of the 2022 IS/MND; with implementation of Mitigation Measure GEO-1 (MM GEO-1), potential impacts to paleontological resources would be less than significant. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 80 NOVEMBER 2025 The 2022 IS/MND determined the Original Project were adequate and consistent with existing federal, state and local policies and consistent with the City of Palm Desert General Plan and surrounding land use. The 2022/IS/MND concluded approval and implementation of the proposed project would result in less than significant impacts related to cumulatively considerable impacts. In addition, the 2022 IS/MND determined the Original Project was designed to comply with established design guideline and current building standards and that the City’s review process would ensure that applicable guidelines are being followed. With implementation of mitigation measures (MM AQ-1, BR-1, BR- 2, and GEO-1), the Original Project would result in a less than significant impact. Modified Project Analysis a) Does the project have the potential to substantially degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below self- sustaining levels, threaten to eliminate a plant or animal community, substantially reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory? No New Impact. As discussed in the 2022 IS/MND, the analysis for Biological Resources determined that the Original Project would result in no impact or less than significant impacts with mitigation measures incorporated (MM BR-1 and MM BR-2) and potential impacts to paleontological resources would be reduced to a less than significant impact with incorporation of Mitigation Measure GEO -1 (MM GEO-1). The Original Project was determined to be compatible with the Palm Desert General Plan, the Project site’s zoning, and its surroundings. With implementation of mitigation measures incorporated, the Original Project was determined to not significantly degrade the overall quality of the region’s environment, or substantially reduce the habitat of a wildfire species, cause a fish or wildlife population to drop below self-sustaining levels, threaten to eliminate a plant or animal community, reduce the number or restrict the range of a rare or endangered plant or animal species, or eliminate important example of the ma jor periods of California history or prehistory (City of Palm Desert 2022). As such, the 2022 IS/MND determined that based on the information and mitigation measures included in the 2022 IS/MND, the Original Project would not be expected to substantially alter or degrade the quality of the environment, including biological and paleontological resources, and impacts would be less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would comply with all required and applicable regulations and mitigation measures regarding biological, paleontological, and cultural resources. There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant with mitigation oncorporated. Therefore, the Modified Project would not result in any new or different impacts relating to alteration or degradation of the quality of the environment, including biological, paleontological, and cultural resources, from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 81 NOVEMBER 2025 b) Does the project have impacts that are individually limited, but cumulatively considerable? (“Cumulatively considerable” means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects.) No New Impact. The 2022 IS/MND states that the Original Project and its location are found to be adequate and consistent with existing federal, state, and local policies and is consistent with the City of Palm Desert General Plan and surrounding land use. Regarding cumulatively considerable impacts, it was determined that the Original Project would result in less than significant impacts (City of Palm Desert 2022). The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to comply with the Palm Desert General Plan and all applicable federal, state, and local policies. There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to cumulatively considerable impacts from those previously identified. No further analysis is required. c) Does the project have environmental effects which will cause substantial adverse effects on human beings, either directly or indirectly? No New Impact. The 2022 IS/MND states that the Original Project would not result in impacts relating to environmental effects that would cause substantial adverse effects on human beings as the Original Project was designed to comply with established guidelines and current building standards. The City’s review process would ensure that applicable guidelines are followed (City of Palm Desert 2022). As stated in the 2022 IS/MND, with implementation of mitigation measures and project design features incorporated into the Original Project, impacts relating to substantial adverse effects on human beings would be reduced to less than significant. The Modified Project is proposed to allow for the construction of one- to two-story single-family homes on the Project site instead of the originally envisioned three-story multifamily apartment buildings. The Modified Project would continue to comply with all applicable guidelines and be required to be reviewed and approved by the City. There are no changed circumstances or new information. As such, impacts associated with the Modified Project would be consistent with the analysis in the 2022 IS/MND and would be less than significant. Therefore, the Modified Project would not result in any new or different impacts relating to substantial adverse effects on human beings from those previously identified. No further analysis is required. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 82 NOVEMBER 2025 INTENTIONALLY LEFT BLANK Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C 18192.02 83 NOVEMBER 2025 4 Addendum Conclusion As demonstrated by the analysis and discussion above, impacts associated with the Modified Project would be similar to or less than the impacts identified within the 2022 IS/MND. The Modified Project would not create substantial changes that would require major revisions of the 2022 IS/MND due to the involvement of new significant environmental effects or a substantial increase in the severity of previously identified significant effects. In addition, no change in circumstances or new information of substantial importance has become available relative to any of the environmental topic categories that would result in new or more severe significant environmental impacts related to the Modified Project. Furthermore, the applicable mitigation measures incorporated into the 2022 IS/MND would continue to be implemented under the Modified Project. All Modified Project impacts would be within the significance determination disclosed under the 2022 IS/MND, and none of the conditions described in CEQA Guidelines Section 15164 requiring a recirculated 2022 IS/MND would occur. Therefore, the Modified Project would not create any potential adverse impacts beyond those evaluated within the 2022 IS/MND. As such, the preparation of this Addendum to modify the Original Project would be appropriate and fully complies with the requirements of CEQA Guidelines Section 15164. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 84 NOVEMBER 2025 INTENTIONALLY LEFT BLANK Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C 18192.02 85 NOVEMBER 2025 5 References and Preparers 5.20 References Cited CAL FIRE (California Department of Forestry and Fire Protection). 2024. Fire Hazard Severity Zones in State Responsibility Area. Prepared September 29, 2023. Effective April 1, 2024. Accessed June 2025. https://calfire-forestry.maps.arcgis.com/apps/webappviewer/index.html?id= 988d431a42b242b29d89597ab693d008. Caltrans. 2013 Technical Noise Supplement. Caltrans.2020. Traffic Noise Analysis Protocol. Caltrans (California Department of Transportation). 2019. California State Scenic Highway System Map. Copyright 2019. Accessed June 2025. https://caltrans.maps.arcgis.com/apps/webappviewer/ index.html?id=465dfd3d807c46cc8e8057116f1aacaa. Carrier. 2012. CA16NA 018-061 Single-Stage Air Conditioner w/ Puron Refrigerant. Catalog No: CA16NA-06PD. https://resource.carrierenterprise.com/is/content/Watscocom/carrier_ca16na03600g_article_1404816 230548_en_ss?_ga=2.123164302.489492439.1570570581-792571132.1570570581 City of Palm Desert. 2016a. General Plan. Adopted November 10, 2016. Accessed May 7, 2025. https://www.palmdesert.gov/home/showpublisheddocument/35222/638747754856570000. City of Palm Desert. 2016b. General Plan Update & University Neighborhood Specific Plan. Draft Environmental Impact Report. Adopted November 10, 2016. Accessed June 16, 2025. https://www.palmdesert.gov/ home/showpublisheddocument/33582/638133583356830000. City of Palm Desert. 2022. Frank Sinatra and Portola Multifamily Development. July 2022. Accessed June 17, 2025. https://files.ceqanet.lci.ca.gov/283696-1/attachment/ -UuK7R440Uo-p6WJ5tPibb50Jv0tJKY14Mubx12DFw-7OiSUwBqSfjjMaSTOHTy2249BHkab9dWlVQxS0. City of Palm Desert. 2023. Zoning. Updated September 2023. Accessed May 7, 2025. https://www.palmdesert.gov/home/showpublisheddocument/34525/638369640378300000. City of Palm Desert. 2025. Municipal Code. Accessed May 7, 2025. https://ecode360.com/PA4981. Department of Conservation (DOC). 2022. California Williamson Act Enrollment Finder. Copyright 2022. Accessed June 2025. https://maps.conservation.ca.gov/dlrp/WilliamsonAct/. Department of Finance (DOF). 2025. Estimates-E1. Population and Housing Estimates for Cities, Counties, and the State — January 1, 2024, and 2025. Accessed June 2025. https://dof.ca.gov/forecasting/ demographics/estimates-e1/. Federal Transit Administration (FTA). 2018. Transit Noise and Vibration Impact Assessment Manual. September 2018. FHWA. 2006. Roadway Construction Noise Model, Version 1.1 Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 86 NOVEMBER 2025 International Organization of Standardization (ISO). 1996. 9613-2: “Attenuation of Sound During Propagation Outdoors, Part 2: General Method of Calculation”. December. Accessible at https://www.iso.org/standard/20649.html 5.21 List of Preparers Dudek Kristen Stoner, Senior Project Manager Gabe Romero, Environmental Analyst Britney Schultz, Senior Biology Specialist David LaRocca, Senior Air Resources Specialist Matthew DeCarlo, Archaeology Specialist Connor Burke, Senior Noise Specialist Sabita Tewani, Senior Transportation Specialist Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C Project Boundary 0 1,000500 Feetn Da t e : 8 / 1 4 / 2 0 2 5 U s e r : c g a r d n e r P a t h : Z : \ P r o j e c t s \ j 1 8 1 9 2 0 2 \ M A P D O C \ C E Q A \ P o r t o l a S p r i n g s . a p r x M a p : F i g u r e 1 P r o j e c t L o c a t i o n L a y o u t : F i g u r e 1 P r o j e c t L o c a t i o n Coachella La Quinta Indian Wells Palm Desert Indio Rancho Mirage Cathedral City Palm Springs ÄÆ111 ÄÆ86ÄÆ74 ÄÆ111 §¨¦10 R i v e r s i d e C o u n t yProject Site !(^ SOURCE: USGS National Map 2025 Portola Springs Residential Development Project Project Location FIGURE 1 Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 88 NOVEMBER 2025 INTENTIONALLY LEFT BLANK Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C Por t o l a A v e Frank Sinatra Dr DesertSpringsDr HalfwayDr Fuller Dr Pele Pl Alpine Ln Daisy Ln Em e r s o n D r Desert Greens DriveNorth Sh e p h e r d L n Ho l l i s t e r D r Dr e x e l l D r Sawmill Canyon Way Oak Flats Dr Ba u t i s t a C a n y o n W a y Chap a r r o s a W a y Heatherwood Dr DesertGre e n s Dr i ve E as t Project Boundary Palm Desert General Plan Land Use Conventional Suburban Neighborhood Golf Course & Resort Neighborhood Town Center Neighborhood Resort & Entertainment 0 500250 Feetn Da t e : 8 / 1 4 / 2 0 2 5 U s e r : c g a r d n e r P a t h : Z : \ P r o j e c t s \ j 1 8 1 9 2 0 2 \ M A P D O C \ C E Q A \ P o r t o l a S p r i n g s . a p r x M a p : F i g u r e 2 E x i s t i n g G e n e r a l P l a n L a n d U s e D e s i g n a t i o n L a y o u t : F i g u r e 2 E x i s t i n g G e n e r a l P l a n L a n d U s e D e s i g n a t i o n SOURCE: Esri Imagery; City of Palm Desert 2024 Portola Springs Residential Development Project Existing General Plan Land Use Designation FIGURE 2 Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 90 NOVEMBER 2025 INTENTIONALLY LEFT BLANK Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C Por t o l a A v e Frank Sinatra Dr DesertSpringsDr HalfwayDr FullerDr Pele Pl Alpine Ln Daisy Ln Em e r s o n D r Desert Greens Drive North Sh e p h e r d L n Ho l l i s t e r D r Dr e x e l l D r Sawmill Canyon Way Oak Flats Dr Ba u t i s t a C a n y o n W a y Ch a p a r r o s a W a y Heatherwood Dr De s e r t Gr e en s D ri v e E a st P.R.-8 P.R.-5 P.R.-5 P.R.-5 P.R.-5 P.R.-5 ST P.R.-5P.R.-22 P.R.-10 P.R.-7 ST P.R.-18 Project Boundary Palm Desert Zoning P.R. - Planned Residential 0 500250 Feetn Da t e : 8 / 1 4 / 2 0 2 5 U s e r : c g a r d n e r P a t h : Z : \ P r o j e c t s \ j 1 8 1 9 2 0 2 \ M A P D O C \ C E Q A \ P o r t o l a S p r i n g s . a p r x M a p : F i g u r e 3 E x i s t i n g Z o n i n g L a y o u t : F i g u r e 3 E x i s t i n g Z o n i n g SOURCE: Esri Imagery; City of Palm Desert 2024 Portola Springs Residential Development Project Existing Zoning FIGURE 3 Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 92 NOVEMBER 2025 INTENTIONALLY LEFT BLANK Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C RECREATION AREA 0.29 AC. RETENTION BASIN 0.25 AC. PROPOSED 45' BUILDING SETBACK LINE FRANK SINATRA DRIVE PO R T O L A A V E N U E 24' 40 ' 51 ' 32' 24' 20' 20 ' PO R T O L A A V E N U E 10' PUE 10' PUE 10' PUE 40 ' EXISTING ROW EXISTING ROW SHALLOW RETENTION BASIN 24' 32 ' 40' 50' 32' RIGHT IN / RIGHT OUT ACCESS SHALLOW RETENTION BASIN 24' 37'1 2 3 4 6 5 7 8 9 10 12 11 13 14 15 16 18 17 19 20 21 22 24 23 26 25 27 28 29 30 31 32 33 3436 35 37 38 39 4042 41 43 44 45 46 48 47 49 50 51 52 53 54 55 56 57 58 60 59 62 61 6366 64 65 67 68 69 72 70 71 73 74 75 76 77 9 10 11 12 13 148 28 27 26 25 24 23 29 30 31 32 33 34 44 43 42 41 40 39 38 37 36 35 45 46 47 48 49 50 51 52 5358 57 56 55 54 79 78 77 76 75 7467 66 65 64 63 62 61 60 59 72 73 15 16 17 18 19 20 21 22 1 2 3 4 5 6 7 RIGHT IN / RIGHT OUT ACCESS MAIN ENTRY 10' PUE 20' 70 45' 45' 45' EXISTING SCE POWERPOLE EXISTING POLE ANCHORS REQUIRED 32' BLDG. SETBACK LINE REQUIRED 32' BLDG. SETBACK LINE REQUIRED 20' PROJECT PERIMETER SETBACK FROM PUBLIC STREET REQUIRED 20' PROJECT PERIMETER SETBACK FROM PUBLIC STREET 32' REQUIRED 32' BLDG. SETBACK LINE EXISTING ROW 32' 51' 40' 10' 10 ' 5' 10 ' 10 ' 10' 10' 5' 10' 10' 5' 5' 68 32' 43' 10' 71 69 PROPOSED 6' MEANDERING SIDEWALK PROPOSED 6' MEANDERING SIDEWALK PROPOSED 6' MEANDERING SIDEWALK Site Plan Portola Springs Development Project FIGURE 4SOURCE: MSA Consulting, Inc. Pa t h : Z : \ P r o j e c t s \ Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C ADDENDUM TO THE FRANK SINATRA AND PORTOLA MULTIFAMILY DEVELOPMENT INITIAL STUDY/MITIGATED NEGATIVE DECLARATION / PORTOLA SPRINGS RESIDENTIAL DEVELOPMENT PROJECT 18192.02 94 NOVEMBER 2025 INTENTIONALLY LEFT BLANK Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 7 EXHIBIT B CONDITIONS OF APPROVAL CASE NO. PP25-0006 (Precise Plan) 1. The development of the property shall conform substantially with the approved plans and exhibits on file with the Development Services Department, except as modified by the following conditions. Any variation from the approved plans must be reviewed and approved by the Planning Division prior to building permit issuance and may require review and approval by the ARC, Planning Commission, and/or City Council. 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. 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. All conditions are subject to field verification. The City may withhold building or occupancy permits until compliance with applicable conditions and mitigation measures is demonstrated. 4. The Precise Plan approves site layout and development consistent with the Conceptual Site Plan dated January 30, 2026. This includes site layout, common open space provided, recreation area location/size, and lot sizes. 5. All development within this Precise Plan will need to adhere to PDMC Section 25.10.050(B). Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 8 6. Prior to the issuance of any building or landscaping permit an application for a Precise Plan is required for approval for architecture, landscaping, development standards, setbacks, and all other requirements identified for the Precise Plan and within the Palm Desert Municipal Code at time of application, subject to approval from the City’s Architectural Review Commission and Planning Commission. Precise Plan 25-0006 and all of the conditions herein will still remain in effect in the event a future Precise Plan approvals unless specifically specified in a resolution. 7. The Precise Plan has identified common areas for recreation, open space and retention. The Applicant shall submit a Design Review application subject to Architectural Review Commission approval for the design of these areas. 8. All future Precise Plans and development will need to adhere to the approved pad elevations as identified in the Preliminary Grading Exhibit, dated January 29, 2026. Any revisions would need to comply with PDMC Section 27.12.045. 9. The City Engineer and Development Services Director reserve the right for any pad elevation revision within this development to require any further studies, drawings, or analysis to ensure the entirety of the project meets City requirements and is consistent with the original approval. The City Engineer and Development Services Director reserves the right for any pad elevation revision within this development to be subject to Planning Commission approval, compliant with PDMC Section 27.12.045. 10. A signed copy of all pages of this Resolution of approval shall be printed onto the first page of the construction drawings upon submittal for building permits. 11. All construction documents, including grading, building, civil, landscape, and improvement plans, shall identify the applicable Precise Plan number on the cover sheet. 12. The Precise Plan shall expire two years from the date of this approval and shall become null and void unless a time extension is granted per PDMC Section 26.20.140, any extension legislation from the Governor or State Legislature. 13. 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. 14. Prior to any construction approval, “will serve” letters shall be obtained from all affected agencies, including but not limited to the jurisdictional agencies; Coachella Valley Water District, Southern California Edison, Spectrum Cable, Frontier Telephone and Burrtec Waste and Recycling of the Desert. 15. Prior to issuance of a building permit, Applicant shall submit an address plan including the recorded street names and addresses for approval by the Development Services Director, in consultation with the Planning, Police, and Fire Departments, and shown on the Final Map. 16. The applicant shall have recorded Conditions, Covenants and Restrictions (CC&Rs) as part of the establishment of a Home Owners Association (HOA), to the Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 9 satisfaction of the City Attorney and City Engineer, after the recordation of the Final Map. Said HOA shall be responsible for the ongoing and perpetual maintenance of all common areas and improvements established and required within the tentative map area. The CC&Rs shall include, but not be limited to, provisions for the ongoing maintenance of frontage streets including Frank Sinatra Drive and Portola Avenue, private interior streets, recreational amenities, landscaping (including street parkways, landscape easements, parks, drainage facilities including pipelines and retention basins, and landscape improvements located within the City right-of-way), blows and nuisance water mitigation features (e.g., fencing, landscaping irrigation, sand impoundment areas, soil stabilization, and bubblers), and the ongoing maintenance of the exterior of any project perimeter walls, including graffiti removal. The CC&Rs shall have clearly labeled exhibit(s) that demonstrate maintenance obligations for all improvements within each associated phase, and the CC&Rs shall be recorded subsequent to the recordation of the Final Map for each associated phase. 17. Plant materials shall emphasize drought-tolerant species compatible with the Coachella Valley climate. Turf shall be limited to recreational or functional open- space areas only. Landscape coverage shall achieve at least 50 percent ground coverage within two years of installation. 18. The pedestrian network shall conform to the Pedestrian Accessibility Plan dated January 30, 2026, including internal sidewalk connections, and safe crossings to the recreation area. Any revision to pedestrian routes shall require Planning Division review. 19. A photometric plan demonstrating compliance with the City’s illumination levels and shielding standards shall be submitted to the Planning Division for approval prior to issuance of building permits. The Photometric Plan shall include the following: a. A catalog of each type of lighting used. b. A detail of any freestanding light that includes height, type of fixture, and decorative base. c. The Photometric level at property line should be “0” 20. The applicant shall comply with the Mitigation Monitoring and Reporting Program adopted State Clearinghouse Number 2022120165 and amendments. All mitigation measures shall be implemented at the timing specified therein, and verification shall be provided to the Planning Division. 21. In the event that any human remains are discovered the applicant shall cease all work and contact the Riverside County Sheriff and Riverside County Coroner’s Office and work shall not resume until such time that the site has been cleared by County Coroner and/or the Palm Desert Sherrif’s Office of any criminal matter. The applicant will also be required to consult with the Agua Caliente Tribal office. 22. During grading and construction, the applicant shall implement SCAQMD Rule 402 and 403 dust-control measures, including daily watering, covering of haul trucks, stabilization of access points, and vehicle idling limits of 5 minutes. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 10 23. An exception to the 100-foot setback requirement per Section 25.10.050 Development Standards (B)(14) is approved for two-story single-family detached homes. Setbacks shall be reduced to 45 feet along the west property line and 32 feet along Portola Avenue and Frank Sinatra. No residential structure shall exceed two stories or 35 feet in height as measured per PDMC § 25.10.050. Rooflines and massing shall maintain visual variety and avoid monotonous repetition along internal streets. 24. Wall heights, materials, and finishes shall match those shown on the approved wall- and-fence plan. Decorative treatments facing public rights-of-way shall include textured stucco, stone veneer, or similar high-quality finishes. Chain-link fencing is prohibited except as temporary construction security fencing. Barbed Wire, Acrylic, and Serpentine Fences are specifically prohibited. 25. The recreation/open-space area shown on the approved Precise Plan shall include a pool area, passive lawns, and shaded seating. The preliminary landscape plan shall be submitted for review and approval of the Architectural Review Commission. Final design details shall be reviewed and approved by the Planning Division prior to building permits for those facilities. The completion of these areas shall be completed prior to the completion of any residential phase within the development. 26. Prior to grading permit, the Applicant shall submit plans and obtain permits for the construction of the perimeter wall along the west, east, and north side of TTM 39307. These property walls shall meet the City of Palm Desert Municipal Code and do not require Architectural Review Commission approval. They may be approved by the Development Services Department at a ministerial level. The Applicant is responsible for conducting a precise survey of the property to verify all boundary lines. a. Wall heights, materials, and finishes shall match those shown on the approved wall-and-fence plan. Decorative treatments facing public rights- of-way shall include textured stucco, stone veneer, or similar high-quality finishes. Chain-link fencing is prohibited except as temporary construction security fencing. Barbed Wire, Acrylic, and Serpentine Fences are specifically prohibited. b. All walls adjacent to a public street shall be designed to provide undulation (offset of at least 18 inches) or pilaster at least every 30 feet of linear extent of the wall pursuant to PDMC Section 25.40.080(F)(3). c. In the event that the survey identifies existing improvements (i.e. fences, structures, landscaping) encroaching into the subdivision from adjacent properties, the Applicant shall be responsible for addressing such conflicts. This includes making good-faith efforts to resolve encroachments through coordination with property owners, which may involve relocation of improvements and processing of lot line adjustments. Any proposed lot line adjustment shall be submitted for review and approval of the City and must be finalized prior to recordation of the Final Map. d. Construction of the site perimeter walls (west, east and north perimeter Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 11 walls) shall be completed prior to first Certificate of Occupancy issuance 27. The applicant shall prepare a final landscape plan that contains the information prescribed by the Development Services Director and is consistent with all City Design Guidelines. This includes the final landscape plan for all common areas, retention, and recreation area as identified in Condition #7. 28. Prior to the issuance of a building permit, the Applicant shall submit perimeter landscape plans consistent with existing landscape across Frank Sinatra Drive, Portola Avenue and consistent with the project to the west. The southwest corner of Frank Sinatra Drive and Portola Avenue shall include enhanced landscaping. The conceptual plans shall be submitted for review and approval by the Architectural Review Commission. 29. All frontage landscape improvements (Frank Sinatra Drive and Portola Avenue) shall be maintained by the Homeowners Association. 30. Prior to the issuance of a certificate of occupancy, all perimeter landscaping shall be installed. 31. Prior to issuance of certificate of occupancy, applicant shall install monumentation sign in a location designated in the landscape plan or approved by the Director of Development Services 32. All subdivision signs shall be subject to Palm Desert Sign Code. 33. In compliance with the City of Palm Desert Municipal Code Chapter 12.16.020, all utility extensions within the site shall be placed underground unless otherwise specified or allowed by the respective utility purveyor. 34. The Applicant shall pay all applicable City of Palm Desert fees, charges and other costs such as development impact fees as prescribed by City Ordinance. The applicant is hereby advised that the fees may change at the time they become due and payable, as permitted by applicable law. NOTICE TO APPLICANT: Pursuant to Government Code Section 66020(d)(1), the 90 day period to protest the imposition of any impact fee, dedication, reservation, or other exaction described in this resolution begins on the effective date of this approval and any such protest must be in a manner that complies with Section 66020(a), and failure to timely follow this procedure will bar any subsequent legal action to attack, review, set aside, void or annul imposition. The right to protest the fees, dedications, reservations, or other exactions does not apply to planning, zoning, grading, or other similar application processing fees or service fees in connection with this project. LAND DEVELOPMENT: 36. The following plans are hereby referenced: Preliminary Grading Exhibit prepared by MSA Consulting on January 29, 2026 updated by and supporting Tentative Tract Map No. 39307 exhibit prepared by MSA Consulting on January 30, 2026. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 12 37. 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 (30 days current) for the site shall be submitted during technical plan review. The Applicant shall secure approval from all easement holders for all grading and improvements, which are proposed over respective easements, if any, or provide evidence that the easement has been relocated, quitclaimed, vacated, abandoned, easement holder cannot be found, or is otherwise of no effect. Proof of authorization shall be provided to the Land Development Department prior to issuance of grading permit. 38. Should such approvals or alternative 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. 39. The Applicant shall comply with Palm Desert Ordinance No. 843, Section 24.20 Stormwater Management and Discharge Ordinance. 40. Prior to a 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 Preliminary Grading Exhibit, the California Building Code, Palm Desert Municipal Code (PDMC) Title 27 Grading, and all other relevant laws, rules, and regulations governing grading in the City of Palm Desert. a. The final grading plans shall show and identify all proposed onsite improvements in accordance with the approved preliminary grading exhibit. b. Design shall be in compliance with the accessibility standards in the California Building Code (current) and Americans with Disability Act (ADA) regulations. Plans shall show running and cross slopes along accessibility path from building entrances to designated parking stalls and to public pedestrian infrastructure. c. All private improvements shall be kept within private property. Non-standard encroachments into proposed public right-of-way will not be permitted, unless clearly identified on these conditions of approval. d. The project’s Geotechnical Engineer shall sign the final grading plans. 41. Prior to grading plan approval, 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. 42. Prior to grading plan approval, the Applicant shall pay all appropriate park fees in accordance with the City’s Municipal Code Section 26.48.060. 43. Prior to issuance of the grading permit for the development, the Applicant shall pay all appropriate signalization fees in accordance with the City’s Resolution No. 79- 17 and 79-55. 44. Prior to grading permit, the applicant shall record the related land subdivision (TTM39307) final map. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 13 45. Prior to grading permit, the Applicant shall submit improvement plans for required improvements along Frank Sinatra Drive as outlined in these conditions of approval. The plans are required to be approved by the City Engineer prior to final map approval. Applicant shall provide: a. Right-of-way dedication to provide a minimum 65-foot right-of-way from street centerline to property line is required. b. Additional right-of-way dedication at project driveways required to accommodate ADA-compliant public infrastructure within public right-of- way, if needed, shall be dedicated. c. All public infrastructure shall be within public right-of-way, prior to plan approval the Applicant shall provide proof of proposed design will meet criteria. d. Street improvements include, but are not limited to, meandering sidewalk, landscaped parkway, and curb & gutter. e. Improvement plans shall include Class II Bicycle Lane along the project frontage per Coachella Valley AG Active Transportation Planning (CVAG ATP) Design Guidelines Section 5.3. f. The project driveway at Frank Sinatra Drive shall be restricted to right-in and right-out movements. Right-in movements shall be made from a right- turn only pocket providing minimum 200-feet of vehicle storage length, or as approved by the City Engineer. The design shall be per AASHTO Green Book and Caltrans Highway Design Manual and be reviewed and approved by the City Engineer. g. Separate signing and striping plans for Frank Sinatra Drive shall be submitted for review and approval of the City Engineer. h. The Applicant shall guarantee all(any) improvements within the public right- of-way 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 improvements. 46. Prior to grading permit, the Applicant shall submit improvement plans for required improvements along Portola Avenue as outlined in these conditions of approval. The plans are required to be approved by the City Engineer prior to final map approval. a. Right-of-way dedication to provide minimum 63-foot right-of-way from street centerline to property line. b. Additional right-of-way dedication at project driveways required to accommodate ADA-compliant public infrastructure within public right-of- way shall be dedicated. c. Street improvements include, but are not limited to, meandering sidewalk, landscaped parkway, and curb & gutter. d. Improvement plans shall include Class II Bicycle Lane along the project Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 14 frontage per Coachella Valley AG Active Transportation Planning (CVAG ATP) Design Guidelines Section 5.3. e. The Applicant shall restripe the existing lane configuration to accommodate a dedicated right-turn lane onto the development at the Portola Avenue driveways with a minimum of 200-feet pocket length, or as approved by the City Engineer. The design shall be per AASHTO Green Book and Caltrans Highway Design Manual and be reviewed and approved by the City Engineer. f. The Applicant shall construct a median opening at the northerly Portola Avenue driveway to accommodate a northbound left-turn lane into the development, providing a minimum 200-foot storage length. The design shall account for the existing southbound left-turn movement from Portola Avenue onto Retreat Circle North and shall be subject to review and approval by the City Engineer. g. Separate signing and striping plans for Portola Avenue shall be submitted for review and approval of the City Engineer. The restriping shall provide for 2 southbound through lanes along the project frontage, and 2 southbound through lanes and a 1 right-turn lane at the project driveways. Adequate transitions shall be provided. h. The Applicant shall guarantee all(any) improvements within the public right- of-way 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 improvements. 47. Prior to approval of the grading plan, the Applicant shall prepare a final Water Quality Management Plan (WQMP) for approval of the City Engineer. a. LID BMPs shall be designed in accordance with the Riverside County Whitewater River Region Stormwater Quality Best Management Practice Design Handbook for Low Impact Development, dated June 2014. b. Any onsite and offsite BMPs shall be designed and sized for a maximum infiltration rate of 2 inches/hour as supported by the infiltration report. Any changes to the proposed BMP sizing, design, and type; and impacts to the referenced exhibits, may require additional approvals. 48. Prior to the issuance of a grading permit, the Applicant shall submit a signed and notarized WQMP Operations and Maintenance Agreement to the City. The agreement shall include provisions for the maintenance and operation of all onsite water quality BMP facilities by the property owner. 49. 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 PDMC Section 24.12 regarding Fugitive Dust Control. 50. Prior to approval of the grading plan, the Applicant shall prepare a detailed final hydrology and hydraulics report for approval of the City Engineer. The report shall encompass the entire development project area and offsite tributary areas to the Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 15 site, and be prepared in compliance with all relevant laws, rules, and regulations governing the City of Palm Desert. a. Site is required to handle the 100-year 24-hour event. Final report shall show the site is designed to meet requirement. b. Design shall incorporate emergency overflow outlet in the event the drainage improvements exceed full capacity. c. A maximum infiltration rate of 2 inches/hour is allowed to be used for this project per the City of Palm Desert Stormwater Infiltration Rate Policy and as determined by the City Engineer during the entitlement review of this project. 51. Prior to approval of the grading plans, the Applicant shall provide the City Engineer with evidence that a Notice of Intent (NOI) has been filed with the State Water Resources Control Board. Such Evidence shall consist of a copy of the NOI stamped by the State Water Resources Control Board or the Regional Water Quality Control Board, or a letter from either agency stating that the NOI has been filed and their WDID number is depicted on the grading plan before approval. 52. Prior to grading permit 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 preliminary site plan exhibit. Proof shall be provided to the Land Development Department prior to issuance of grading permit. 53. Prior to issuance of 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 for all grading work related to this project. 54. Prior to issuance of grading permit, where grading involves import or export, the Applicant shall obtain relevant permits, from the Public Works Department where the material is coming from or going to, including import/export quantities and hauling route. 55. Prior to grading permit issuance, a copy of the recorded development specific Covenants, Conditions and Restrictions (CC&R's) shall be submitted for review and concurrence of maintenance responsibilities by City Engineer and City Attorney. 56. Prior to grading permit sign-off, the final grade certification shall be submitted in conformance with the approved grading plans. A licensed land surveyor shall certify the completion of grading in conformance with the lines and grades shown on the approved grading plans. 57. Prior to grading permit sign-off, the Applicant shall field verify that all BMPs are designed, constructed, and functional in accordance with the approved WQMP. BMPs shall be inspected by City staff. 58. Upon completion of grading work, the project’s Geotechnical Engineer shall certify to the completion of 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 to the completion of grading in conformance with the lines and grades shown on the approved grading plans. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 16 59. Prior to grading sign-off, the required associated improvements shall be completed or bonded in a manner acceptable to the City Engineer and City Attorney. 60. Prior to issuance of a Certificate of Occupancy, the applicant shall submit a Signing and Striping Plan for review and approval by the City Engineer. The plan shall identify all proposed on-street parking restrictions and signage, and shall restrict parking along designated sections of the street, excluding the area identified as Section A-A. No Certificate of Occupancy shall be issued until the Signing and Striping Plan has been approved and implemented. 61. The applicant shall complete all public improvements per the provisions of the Subdivision Improvement Agreement. a. Prior to the first certificate of occupancy of an individual lot within the proposed subdivision, all improvements within existing public streets, Frank Sinatra Drive and Portola Avenue, will be required to be constructed in conformance with current City standards. FIRE DEPARTMENT: 62. Protection Water Supplies/Fire Flow - Minimum fire flow for the construction of all buildings is required per CFC Appendix B. Prior to building permit issuance for new construction, the applicant shall provide documentation to show a (existing/proposed) water system capable of delivering the required fire flow. Specific design features may increase or decrease the required fire flow. a. Will Serve Letters from the responsible water purveyor are required prior to a map recordation. 63. Fire Protection Water Supplies/Hydrants - The minimum number of fire hydrants required, as well as the location and spacing of fire hydrants, shall comply with CFC Appendix C and NFPA 24. Fire hydrants shall be located no more than 400 feet from all portions of the exterior of the building along an approved route on a fire apparatus access road, unless otherwise approved by the Fire Department. Where new water mains are extended along streets where hydrants are not needed for protection of structures, standard fire hydrants shall be provided at spacing not to exceed 1000 feet along streets for transportation hazards. Fire hydrants shall be at least 40 feet from the building it is serving. A fire hydrant shall be located within 20 to 100 feet of the fire department connection for buildings protected with a fire sprinkler system. The size and number of outlets required for the approved fire hydrants are 4” x 2 ½” x 2 ½” (super hydrant). Reference CFC as amended and NFPA 24. 64. Fire Department Access - Fire apparatus access roads shall be provided to within 150 feet of all exterior portions of buildings, unless otherwise approved by the Fire Department. Fire apparatus access roads shall have an unobstructed width of not less than 24 feet. Dead-end fire apparatus access roads in excess of 150 feet shall be provided with an approved turn around. The minimum required turning radius of a fire apparatus access road is 45 feet outside radius and 24 feet inside radius. The construction of the fire apparatus access roads shall be all weather and capable of sustaining 75,000 lbs. Unless otherwise approved, the grade of a fire apparatus Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 17 access road shall not exceed 16 percent and the cross slope shall not exceed 2.5 percent. The angles of approach and departure for fire apparatus access roads shall be a maximum of 6 percent grade change for 25 feet of approach/departure. Reference CFC as amended and Riverside County Fire Department Policies and Standards. a) Fire Lane marking: Identification and marking of fire lanes, including curb details and signage shall be in compliance with Riverside County Fire Department Standards. 65. Fire Department Access Turn Around - Dead-end fire apparatus access roads in excess of 150 feet in length shall be provided with a bulb turnaround at the terminus measuring a minimum of 45 feet outside radius and 24 feet inside radius. Parallel parking around the perimeter of the bulb is acceptable provided the bulb outside turning radius is increased by 8 feet. In-lieu of a bulb, a hammer-head type turnaround is acceptable where the top of the “T” dimension is 120 feet with the stem in the center. Additional turnaround designs may be acceptable as approved by the Fire Department. Reference CFC as amended and Riverside County Fire Department Policies and Standards. 66. Secondary Access – Unless otherwise approved by the Fire Department, dead end fire apparatus access roads shall not exceed 1,320 feet. Secondary egress/access fire apparatus access roads shall provide independent egress/access from/to the area or as otherwise approved by the Fire Department. Secondary egress/access fire apparatus access roads shall be as remote as possible from the primary fire apparatus access road to reduce the possibility that both routes will be obstructed by a single emergency. Additional fire apparatus access roads based on the potential for impairment by vehicle congestion, condition of terrain, climatic conditions, anticipated magnitude of a potential incident, or other factors that could limit access may be required by the Fire Department. Reference CFC as amended and Riverside County Fire Department Policies and Standards. 67. Fire Department Building Construction Plan Review - Submittal of construction plans to the Fire Department will be required. Final fire and life safety conditions will be addressed when the Fire Department reviews the plans. These conditions will be based on California Fire Code, California Building Code (CBC), and related codes/standards adopted at the time of construction plan submittal. Reference CFC as amended. 68. Traffic Calming Devices - Requests for installation of traffic calming designs/devices on fire apparatus access roads shall be submitted for evaluation purposes, resulting in denial or approval by the Fire Code Official. Reference CFC as amended. 69. Gate Access - All electronically operated gates shall be provided with Knox key switches and automatic sensors for access. These gates shall be provided with access to gate equipment or another method to open the gate if there is a power failure. (Manual gates shall not be locked unless a Knox padlock or Knox Box containing the key to the lock is installed in an approved location on the approach side of the gate). A pedestrian gate, if used to provide access, shall be a minimum Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C PLANNING COMMISSION RESOLUTION NO. 2913 18 3 feet wide and provided with a Knox Box/Padlock if locked. Reference CFC as amended. 70. Water Plans - If fire hydrants are required to be installed, applicant/developer shall furnish the water system fire hydrant plans to the Fire Department for review and approval prior to building permit issuance. Plans shall be signed by a registered civil engineer, and shall confirm hydrant type, location, spacing, and minimum fire flow. Once plans are signed and approved by the local water authority, the originals shall be presented to the Fire Department for review and approval. Reference CFC as amended. 71. Fire Planning Review: This planning case will also be reviewed by the Riverside County Fire Department’s Fire Planning Division for the cumulative impact on the Fire Department’s ability to provide an acceptable level of service. Additional requirements may be conditioned by Fire Planning to mitigate these impacts. Questions for Fire Planning can be addressed to RVCPlanningSubmittals@fire.ca.gov. Docusign Envelope ID: CE757150-3C75-4A7F-B4AD-B1786AE0930C