HomeMy WebLinkAboutPMW 10-165 - Cert of Water Mgmt Pln & Covenant & Agmt (Alessando Alley) �
CITY OF PALM DESERT
STAFF REPORT
REQUEST: AUTHORIZE THE MAYOR TO EXECUTE OWNER'S
CERTIFICATION OF WATER QUALITY MANAGEMENT PLAN
AND EXECUTE COVENANT AND AGREEMENT FOR PARCEL
MAP WAIVER NO. 10-065
SUBMITTED BY: Bryce Lynn White, Project Administrator
DATE: December 9, 2010
CONTENTS: Aerial Map
Final Water Quality Management Plan
Covenant and Agreement
Recommendation
By Minute Motion, that the City Council:
Authorize the Mayor to execute Owner's Certification of Water Quality
Management Plan and execute Covenant and Agreement for Parcel Map
Waiver No. 10-165.
Executive Summary
The Owner's Certification of Water Quality Management Plan for Parcel Map Waiver
No. 10-165 and the Covenant and Agreement Establishing Notification Process ar�d
Responsibility for Water Quality Management Plan Implementation and Maintenance
are for a portion of City-owned parcel APN 627-092-045. The subject property is located
along the Alessandro Alley next to 44-849 Las Palmas Avenue, which is an apartment
complex with covered parking for twelve spaces running parallel to the Alessandro
Alley. The City Council approved the even exchange of the City-owned property,
excepting the portion retained for right-of-way, for the southerly portion of 44-849 Las
Palmas Avenue. Also, as part of the Alessandro Alley Project, the remainder portion of
APN 627-092-045 will be improved with parking improvements and a carport providing
an equal number of covered parking spaces to replace those removed from 44-849 Las
Palmas Avenue. An approved Water Quality Management Plan is required prior to
constructing the new parking improvements.
Discussion
The City-owned property (APN 627-092-045) is zoned R-1 (single family residential)
and has access only to Alessandro Alley. The square footage and lot width of this
Staff Report
WQMP and Covenant for PMW No. 10-065
Page 2 of 3
December 9, 2010
property are considerably less than the minimum development standards for an R-1
zone. On April 23, 2009, the City Council approved the exchange of this property
excepting the portion retained for the Alessandro Alley right-of-way.
The property at 44-849 Las Palmas Avenue (APN 627-092-035) is an eleven unit
apartment complex zoned R-3 (multi-family residential) and is adjacent to the City-
owned property. This property has covered parking for twelve spaces that parallel the
Alessandro Alley. The southerly 25.5 feet, excepting portions thereof, is approximately
3,488 square feet and will be exchanged for the remainder portion of APN 627-092-045.
The parking and carports on the southerly portion of 44-849 Las Palmas Avenue will be
removed as part of the Alessandro Alley Improvement Project. The Palm Desert
Municipal Code Section 25.58 requires that all residential properties provide onsite
parking spaces, and at least half are to be covered for shading. This requires parking
improvements on the remainder portion of APN 627-092-045 that provide twelve
parking spaces and a carport to replace the twelve spaces and carports to be removed
as part of the project.
On August 4, 2010, the Planning Commission approved Parcel Map Waiver (PMW) No.
10-165 to merge the remainder portion of APN 627-092-045 with 44-889 Las Palmas
Avenue. The paved area for the parking improvements exceeds 5,000 square feet,
which requires that a Water Quality Management Plan (WQMP) be implemented to
design, construct, and maintain improvements specified in the WQMP using site specific
Best Management Practices (BMP).
The City of Palm Desert, along with the County of Riverside, the Riverside County Flood
Control and Water Conservation District, Coachella Valley Water, the City of Banning
and eight other Coachella Valley cities are all co-permittees to the Municipal Separate
Storm Sewer System (MS4 Permit), which the City approved in 1991 in response to the
requirements of the National Pollutant Discharge Elimination System (NPDES). The
MS4 Permit is reissued every five years and requires the co-permittees to implement
and follow a Stormwater Management Plan (SWMP). The MS4 and SWMP require a
project specific Water Quality Management Plan (WQMP).
The Whitewater River Region WQMP as required by the Whitewater River Watershed
SWMP has been developed to further address post-construction Urban Runoff from
New Development and Redevelopment projects under the jurisdiction of the Permittees,
which the subject WQMP is in compliance with. Both the SWMP and the WQMP are
updated every five years in response to the requirements of the MS4 Permit.
As part of the Alessandro Alley Improvement Project the Palm Desert Redevelopment
Agency will provide funding and maintenance of the improvements until completed. The
executed Covenant and Agreement will ensure that when the subject property is
conveyed to the owners of 44-889 Las Palmas, they and future owners will comply with
the approved WQMP and operate and maintain the BMPs as outlined in the WQMP.
G:IrdalBryce WhiteIWQMP Plan and Covenant SR 12-9-10.doc
Staff Report
WQMP and Covenant for PMW No. 10-065
Page 3 of 3
December 9, 2010
Therefore staff recommends the City Council authorize the Mayor to execute the
Owner's Certification of the WQMP and the Covenant and Agreement for PMW No. 10-
165.
Fiscal Analvsis
The cost to implement the subject WQMP has been budgeted as part of the Alessandro
Alley Improvement Project. Funds are available in Account No. 850-4341-433-4001.
There will be no fiscal impact on the General Fund.
Submitted By:
Bryc nn it , Project Administrator M in Alvarez, Redevelopment Manager
Department Head:
l C1TY COUNCILAC' ION
��j . � APPROVED.�„____pF,NiF,D
sti McCarthy, AC r edevelopment RECEI'I�ED _______�pT�i�;R
� MEI�;TtNG D - � �
: ATE ���/�,
' AYF.S: % �, �
;'` _ Nors:�1���N
ABSrNT; �L7r�l5nf2���P�-,1/ `�`�—'
Paul S. Gibson, Director of Finance AI3STAIN: v�r?�
VERIFIF.0 I3Y; � -
Originat on File with City Clcr s Uf`fice
Ap ova �
1
Jo . Wohlmuth, City Manager/Executive Director
G:IrdalBryce WhiteIWQMP Plan and Covenant SR 12-9-10.doc
Project Specific
Final Water Quality Management Plan
For: Alessandro Alley Improvement Project
Apartment Parking Lot
Las Palmas Avenue to Monterey Avenue
City of Palm Desert
THE PALM DESERT REDEVELOPMENT AGENCY PMW NO. 10-165
Prepared for:
r-�7---�
� �
The Palm Desert Redevelopment Agency
Palm Desert Civic Center
73-510 Fred Waring Drive
Palm Desert, CA 92260
Telephone: (760) 346-0611
Prepared by:
-
,..�:.� The Altum Group
Doug Franklin, P.E.
73-255 EI Paseo Drive, Suite 15
Palm Desert, CA 92260
Telephone: (760) 346-4750
WQMP Preparation Date: October 12, 2010 - Revised
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
OWNER'S CERTIFICATION
This project-specific final Water Quality Management Plan (WQMP) has been prepared for:
Palm Desert Redevelopment Agency (RDA)
by The Altum Group for the project known as Alessandro Alley Improvement Project
(Apartment Parking Lot). The site is located one block north of Highway 111, between
Las Palmas Avenue and Monterey Avenue in the City of Palm Desert.
This final WQMP is intended to comply with the requirements of the City of Palm Desert (City)
and the California Regional Water Quatity Control Board MS-4 Permit for the Colorado River
Region Basin for the preparation and implementation of a project-specific WQMP which
includes site specific best management practices (BMPs).
The undersigned, while owning the property/project described in the preceding paragraph, shall
be responsible for the implementation of this WQMP and will ensure that this WQMP is
amended as appropriate to reflect up-to-date conditions on the site. This WQMP will be
reviewed with the facility operator, facility supervisors, employees, tenants, maintenance and
service contractors, or any other party (or parties) having responsibility for implementing
portions of this WQMP. At least one copy of this WQMP will be maintained at the project site or
project office in perpetuity.
The undersigned is authorized to certify and to approve implementation of this WQMP. The
undersigned is aware that implementation of this WQMP is enforceable under City ordinances.
If the undersigned transfers its interest in the subject property/project, the undersigned shall
notify the successor in interest of its responsibility to implement this WQMP.
"I, the undersigned, certify under penalty of law that I am the owner of the property that is the
subject of this WQMP, and that the provisions of this WQMP have been reviewed and accepted
and that the WQMP will be transferred to future successors in interest."
Document Date: December 9, 2010 City of Palm Desert
STATE OF CALIFORNIA ) By:
)ss:
COUNTY OF RIVERSIDE )
Title: Mayor
On ,before
me, ,Notary Public,
(insert name and title of officer) personally
appeared ,
who proved to me on the basis of satisfactory evidence,
to be the person(s)whose name(s)is/are subscribed
to the within instrument and acknowledgement to me that
he/she/they executed the same in his/her/their authorized
capacity(ies),and that by his/her/their signature(s)on the
instrument the person(s),or the entity upon behalf of
which the person(s)acted,executed the instrument.
I certify under PENALTY OF PERJURY under the laws
of the State of Califomia that the foregoing paragraph is
true and correct.
WITNESS my hand and o�cial seal.
Notary Public Signature
October 12, 2010 �
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Contents
SECTION PAGE
Contents.................................................................................................................................................ii
I. Project Description.......................................................................................................................1
II. Site Characterization ...................................................................................................................4
III. Pollutant.......................................................................................................................................5
IV. Hydrologic Conditions of Concern...............................................................................................6
V. Best Management Practices .......................................................................................................7
V.1 Site Design and Treatment Control BMPs ...........................................................7
V.1.A Site Design BMPs .................................................................................9
V.1.B Treatment Control BMPs.....................................................................14
V.1.0 Measureable Goal Summary...............................................................16
V.2 Source Control BMPs ........................................................................................17
V.3 Equivalent Treatment Control Alternatives.........................................................20
V.4 Regionally-Based Treatment Control BMPs.......................................................20
VI. Operations and Maintenance Responsibility for BMPs ........................................................... 21
VII. Funding..................................................................................................................................... 22
TABLES
Table 1. Pollutant of Concern Summary 5
Table 2. BMP Selection Matrix Based Upon Pollutant Removal Efficiency�'� 8
Table 3. Implementation of Site Design Concepts 10
Table 4. Site Design BMPs Meeting the Measureable Goal in WQMP Section 3.5.1.1 13
Table 5: Treatment Control BMP Summary 15
Table 6: Measureable Goal Summary 16
Table 7. Source Control BMPs 17
APPENDICES
A. Planning Commission Meeting Notice of Action
B. Vicinity Map, WQMP Site Plan, and Receiving Waters Map
C. Supporting Detail Related To Conditions of Concern (not applicable)
D. Educational Materials
E. Soils Report(not applicable)
F. Site Design and Treatment Control BMP Sizing Calculations and Design Details
G. Agreements— CC&Rs, Covenant and Agreements and/or Other Mechanisms for ensuring
ongoing Operation, Maintenance, Funding and Transfer of Requirements of this project-
specific WQMP.
H. Phase 1 Environmental Site Assessment—Summary of Site Remediation Conducted and
Use Restrictions (not applicable)
I. Project-Specific WQMP Summary Data Form
October 12, 2010 ii
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
I. Project Description
Project Owner: City of Palm Desert
73-510 Fred Waring Drive
Palm Desert, CA 92260
Telephone: (760) 346-0611
WQMP Preparer: The Altum Group
73-255 EI Paseo Drive, Suite 15
Palm Desert, CA 92260
Telephone: (760) 346-4750
Project Site Address: The project address is located on Alessandro Alley, between Las
Palmas Avenue and Monterey Avenue, in the City of Palm Desert,
County of Riverside, California.
Planning Area/
Community Namel
Development Name: N/A
APN Number(s): 627-092-045
Thomas Bros. Map: Riverside Co. Pg. 848 Sec E-1 and F-1, 2008 Edition
Project Watershed: Whitewater River
Sub-watershed: N/A
Project Site Size: The total site area is approximately 5,520 square feet;
Pervious/Impervious: All of the site will be disturbed during construction. The post
development impervious area is approximately 88% of the site.
The pervious site areas are landscaped or will have a decorate
rock covering.
Standard Industrial Classification (SIC) Code: 8399 — Social Services, not elsewhere
classified; 6513— Operators of Apartment Buildings.
Formation of Home Owners' Association (HOA)
or Property Owners Association (POA): Y ❑ N �
October 12, 2010 �
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Additional Permits/Approvals required for the Project:
AGENCY Permit required
State Department of Fish and Game, 1601 Streambed Y ❑ N�
Alteration Agreement
State Water Resources Control Board, Clean Water Act Y ❑ N�
(CWA) Section 401 Water Quality Certification
US Army Corps of Engineers, CWA Section 404 permit Y ❑ N�
US Fish and Wildlife, Endangered Species Act Section 7 Y ❑ N�
biological opinion
Othe►' (p/ease list in the space below as required)
Project Description:
The proposed Apartment Parking Lot will be located on the north side of Alessandro Alley,
adjacent to the existing apartment complex and just west of Las Palmas Avenue, in the City of
Palm Desert. The subject parcel is currently undeveloped, with little or no vegetation. The
parking lot will be developed with the repaving of Alessandro Alley, part of the Alessandro Alley
Improvement Project initiated by the Palm Desert RDA.
The project plans have been approved by the City and the project is ready to go "out to bid".
The new parking lot will be paved with asphalt, have covered canopy parking, block walls on
three sides (one of which is existing), adjacent landscaping, and a retention basin at the low end
of the parking lot to capture storm runoff.
The site is not subject to offsite storm flows. Some of the onsite storm flow percolates into the
existing ground. The remainder accumulates and flows north-westerly along an adjacent parcel
(APN 672-092-044) to San Benito Court, a public street. Ultimately, these flows are intercepted
by a 42" storm drain in Las Palmas Avenue, conveyed to a 24'x8' channel along San Pasqual,
which flows to the Whitewater River.
A retention basin will be provided at the low (northerly) end of the parking lot. The capacity of
the basin is 330 cubic feet. However, the maximum 100-year storm volume is 911 cubic feet
(see calculations in Appendix F). Therefore, a drywell is recommended to address the
difference between the basin capacity provided and the 100-year volume. With a drywell
installed (assuming a nominal percolation rate of 0.05 cfs), the 100-year storm flow is retained
with approximately 0.5' af freeboard.
If the basin capacity is exceeded, overflow will continue north-westerly (through a "dropped
block" opening in the adjacent CMU wall) in a manner consistent with the pre-developed flow
patterns.
Expected pollutants to be generated by the project during construction include sediment and
turbidity, nutrients, organic compounds, trash and debris, oxygen demanding substances,
bacteria and viruses, oil and grease, pesticides and metals.
October 12, 2010 2
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Appendix A of this project-specific WQMP will include a complete copy of the final Conditions of
Approval. Appendix B of this project-specific WQMP includes:
a. A Vicinity Map identifying the project site in sufficient detail to allow the project site to
be plotted on Permittee base mapping; and
b. A Site Plan for the project. The Site Plan included as part of Appendix B depicts the
following project features:
■ Location and identification of all structural BMPs, including Treatment Control
BMPs.
■ Landscaped areas.
■ Paved areas and intended uses (i.e., parking, sidewalks, etc.).
■ Number and type of structures and intended uses (e.g., buildings, etc.).
■ Infrastructure (i.e., streets, storm drains, etc.) that will revert to public agency
ownership and operation.
■ Location of existing and proposed public and private storm drainage facilities
(i.e., storm drains, channels, basins, etc.), including catch basins, drywells and
other inlets/outlet structures. Existing and proposed drainage facilities should be
clearly differentiated.
■ Location(s) of Receiving Waters to which the project directly or indirectly
discharges.
■ Location of points where onsite (or tributary offsite)flows exit the property/project
site.
■ Proposed drainage area boundaries, including tributary offsite areas, for each
location where flows exit the property/project site. Each tributary area should be
clearly denoted.
■ Pre- and post-project topography.
Appendix I (included in final WQMP) is a one page form that summarizes pertinent information
relative to this project-specific WQMP.
October 12, 2010 3
Whitewater River Region Final WQMP
Alessandro Ailey Improvement Project
Palm Desert RDA PMW No. 10-165
II. Site Characterization
Land Use Designation or Zoning: R-L, Low Density (General Plan)
Current Property Use: Vacant, undeveloped.
Proposed Property Use: Parking lot.
Availability of Soils Report: Y ❑ N � Note: A soils report is required if infiltration
BMPs are utilized. Attach report in Appendix E.
Phase 1 Site Assessment: Y ❑ N � Note: If prepared, attached remediation
summary and use restrictions in Appendix H.
Receivin Waters for Urban Runoff from Site
Receiving Waters 303(d) List Impairments Designated Beneficial Proximity to RARE
Uses Beneficial Use
MUN, AGR, GWR, REC Not Designated as
Whitewater River None 1, REC 2, WARM, RARE (1.5 miles)
COLD, WILD, POW
Coachella Valley Pathogens, Toxaphene FRSH, REC 1, REC 2, Designated as
Storm Water Channel WARM,WILD, RARE RARE 17.0 miles
Nutrients, Salinity, and AQUA, IND, REC 1, Designated as
Salton Sea' Selenium REC 2, WARM,WILD, RARE ( 34.0 miles)
RARE
Note: 1) The Salton Sea is the terminus for the Coachella Valley Storm Water Channel. However, note
that the Salton Sea is not located within the "Whitewater Region" receiving waters as outlined in
the Riverside County WQMP.
October 12, 2010 4
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
III. Pollu#ant
Table 1. Pollutant of Concern Summary
Potential for Causing Receiving Water
Pollutant Category Project Impairment
Bacteria/Virus (pathogens') Yes Yes
Heavy Metals Yes No
Nutrients Yes Yes
Pesticides Yes No
Toxaphene2 No Yes
Organic Compounds3 Yes No
Sediments and Turbidity Yes No
Trash & Debris Yes No
Oxygen Demanding Substances Yes No
Oil &Grease4 Yes No
Notes: 1) Pathogens are disease causing virus or bacteria. Pathogens are an impairment in the
Coachella Valley Storm Water Channel from Dillon Road to the Salton Sea.
2) Toxaphene is an insecticide which was banned from use in the United States in 1990.
Therefore, it is not a potential for the project but is currently a receiving water impairment.
3) Petroleum hydrocarbons are one of the most common organic compounds associated with
street and parking lots and are a potential pollutant for the site. See Section V.2 for a
description of appropriate Source Control BMPs.
4) Oil and grease associated with landscaping and onsite operations are potential pollutants for
the development. See Section V.2 for a description of appropriate Source Control BMPs.
Discussion of Receiving Water Impairment:
Most of the pollutants which have caused impairment to the projecYs receiving waters are no
longer being used. Many of these pollutants can be traced back to agricultural operations
prevalent in the Coachella Valley. In addition, water quality management practices (i.e., the
MS4 Permit requirements) have been implemented throughout the region to govern storm and
non-storm water discharges to the designated receiving waters. These discharges have the
ability to impact the "Beneficial Uses" of the receiving waters and can cause or threaten to
cause a condition of"pollution" or"nuisance".
The purpose of the project WQMP is to provide Best Management Practices (BMPs) which the
property owner or their designee will implement and maintain to meet the requirements of the
MS4 permit, thus minimizing the pollutant load associated with urban runoff.
October 12, 2010 5
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
IV. Hydrologic Conditions of Concern
Local Jurisdiction Requires On-Site Retention of Urban Runoff:
Yes � The project will be required to retain urban runoff onsite in conformance with local
ordinance (See Table 6, Permittees Requiring Onsite Retention of Stormwater, of the
Whitewater River Region WQMP). This section does not need to be completed.
See SDP No. 08-909 Hydrology Report, dated 10/8/09, for Reference.
No ❑ This section must be completed.
This Project meets the following condition:
� Condition A: Runoff from the Project is discharged directly to a publicly-owned,
operated and maintained MS4; the discharge is in full compliance with Permittee
requirements for connections and discharges to the MS4 (including both quality and
quantity requirements); the discharge would not significantly impact stream habitat
in proximate Receiving Waters; and the discharge is authorized by the Permittee.
� Condition B: The project disturbs less than 1 acre and is not part of a larger
common plan of development that exceeds 1 acre of disturbance. The disturbed
area calculation must include all disturbances associated with larger plans of
development.
� Condition C: The project's runoff flow rate, volume, velocity and duration for the
post-development condition do not exceed the pre-development condition for the 2-
year, 24-hour and 10-year 24-hour rainfall events. This condition can be achieved
by minimizing impervious area on a site and incorporating other site-design
concepts that mimic pre-development conditions. This condition must be
substantiated by hydrologic modeling methods acceptable to the Permittee.
� None
Refer to Section 3.4 of the Whitewater River Region WQMP for additional
requirements.
Supporting engineering studies, calculations, and reports will be included in Appendix C in the
final WQMP.
October 12, 2010 g
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
V. Best Management Practices
This project implements Best Management Practices (BMPs) to address the Pollutants of
Concern that may potentially be generated from the use of the project site. These BMPs have
been selected and implemented to comply with the Section 3.5 of the WQMP and consist of Site
Design, Source Control and, if/where necessary, Treatment Control BMPs as described herein.
V.1 Site Design and Treatment Control BMPs
Local Jurisdiction Requires On-Site Retention of Urban Runoff:
Yes � The project will be required to retain urban runoff onsite in conformance with Iocal
ordinance (See Table 6, Permittees Requiring Onsite Retention of Stormwater, of the
Whitewater River Region WQMP). Section V.1 does not need to be completed.
No ❑ Section V.1 must be completed.
This section of the Project-Specific WQMP documents the Site Design BMPs and, if/where
necessary the Treatment Control BMPs that will be implemented on the Project to meet the
requirements within Section 3.5.1 of the WQMP. Section 3.5.1, includes requirements to
implement Site Design Concepts and BMPs, and includes requirements to address the project's
Pollutants of Concern with BMPs. Further sub-section 3.5.1.1 specifically requires that the
projects Pollutants of Concern be addressed with Site Desiqn BMPs to the extent feasible.
This project incorporates Site Design BMPs to fully address the Pollutants of Concern where
and to the extent feasible. If and where it has been acceptably demonstrated to the Permittee
that it is infeasible to fully meet this requirement with Site Design BMPs, this section includes a
description of the conventional Treatment Control BMPs that will be substituted to meet the
same requirements.
In addressing pollutants of concern, BMPs are selected using Table 2 below.
October 12, 2010 7
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Table 2. BMP Selection Matrix Based Upon �ollutant Removal Efficiency�'�
(Excerpted,with minor revision,from the Orange Courrty Water Quality Management Plan dated September 26,2003
and the San Bernardino Water Quality Management Plan dated April 14,2004)
Wet Water Hydrodynamic Manufactured
Detention Infiltration Ponds Filtration Quality Separator or Proprietary
Pollutant of Biofilters Basins�3� BMPs�4� or Systems�6� Inlets Systems�'� Devices�8�
Concern �Z� Wetlands
�s�
Sediment/Turbidity H/M M H/M H/M H/M L H/M U
(l for
Turbidity)
Nutrients L M H/M H/M L!M L L U
Organic U U U U H/M L L U
Compounds
Trash&Debris L M U U H/M M H/M U
Oxygen L M H/M H/M H/M L L U
Demanding
Substances
Bacteria&Viruses U U H/M U H/M L L U
Oil&Grease H/M M U U H/M M L/M U
Pesticides U U U U U L L U
(non-soil bound)
Metals H/M M H H H L L U
Abbreviations:
L: Low removal efficiency H/M: High or medium removal efficiency U: Unknown removai efficiency
Notes:
(1) Periodic performance assessment and updating of the guidance provided by this table may be necessary.
(2) Includes grass swales, grass strips, wetland vegetation swales, and bioretention.
(3) Includes extended/dry detention basins with grass lining and extended/dry detention basins with impervious
lining. Effectiveness based upon minimum 36-48-hour drawdown time.
(4) Includes infiltration basins, infiltration trenches, and porous pavements.
(5) Includes permanent pool wet ponds and constructed wetlands.
(6) Includes sand filters and media filters.
(7) Also known as hydrodynamic devices, baffle boxes, swirl concentrators, or cyclone separators.
(8) Includes proprietary stormwater treatment devices as listed in the CASQA Stormwater Best Management
Practices Handbooks, other stormwater treatment BMPs not specifically listed in the WQMP, or newly
developed/emerging stormwater treatment technologies.
October 1 Z, 2010 g
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
V.1.A Site Design BMPs
This section documents the Site Design BMPs that will be implemented on this project to
comply with the requirements in Section 3.5.1 of the WQMP. Since the 100-year storm is being
retained onsite per local ordinances, we have included Tables 3 and 4 for "Reference" only.
Note that for this project, in which the small parking lot is almost ninety percent (90%) of the
parcel, these tables are not applicable.
October 12, 2010 g
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O
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Justification of infeasibilitv for sub-areas not addressed with effective Site Desiqn BMPs
in Tab/e 4:
Pollutants of concern will be addressed in the basin.
V.1.B Treatment Control BMPs
Conventional Treatment Control BMPs shall be implemented to address the projecYs Pollutants
of Concern as required in WQMP Section 3.5.1 where, and to the extent that, Section V.1.A has
demonstrated that it is infeasible to meet these requirements through implementation of Site
Design BMPs.
� The Site Design BMPs described in Section V.1.A of this project-specific WQMP
completely address the Pollutants of Concern for the entire project site as required in
Section 3.5.1.1 of the WQMP. Supporting documentation for the sizing of these Site
Design BMPs is included in Appendix F. *Section V.1.B need not be completed.
❑ The Site Design BMPs described in Section V.1.A of this project-specific WQMP do NOT
completely address the Pollutants of Concern for the entire project site as required in
Section 3.5.1.1 of the WQMP. *Section V.1.B must be completed.
The Treatment Control BMP identified in this section was selected, sized and implemented to
address the Pollutants of Concern for the project sub-area, if not fully addressed with Site
Design BMPs in the previous section. Supporting documentation for the sizing of the Treatment
Control BMP is included in Appendix F.
October 12, 2010 14
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Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Paim Desert RDA PMW No. 10-165
V.1.0 Measureable Goal Summary
This section documents the extent to which this project meets the measureable goal described
in WQMP Section 3.5.1.1 of addressing all of the projects Treatment Requirements with Site
Design BMPs.
Table 6: Measureab/e Goa/ Summary
��) (2) �3)
%of Treatment
Total Area Treated with Total Area Treated with Requirement addressed
Site Desiqn BMPs Treatment Control BMPs with Site Design BMPs
0 AC 0.13 AC N/A
October 12, 2010 16
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
V.2 Source Control BMPs
This section identifies and describes the Source Control BMPs applicable and implemented on
this project.
Table 7. Source Control BMPs
Check One If not applicable,
BMP Name Included Not state brief reason
Applicable
Non-Structural Source Control BMPs
Education for Property Owners, Operators, � �
Tenants, Occu ants, or Em lo ees
Activit Restrictions � ❑
Irri ation S stem and Landsca e Maintenance � ❑
Common Area Litter Control � ❑
Street Sweeping Private Streets and Parking � �
Lots
Draina e Facilit Ins ection and Maintenance � ❑
Structural Source Control BMPs
Site will not drain
MS4 Stenciling and Signage ❑ � directly to MS4
facilities
Landsca e and Irri ation S stem Desi n � ❑
Protect Slopes and Channels � � Not part of project
desi n
Provide Community Car Wash Racks � � Not part of project
desi n
Pro erl Desi n*:
Fueling Areas � � Not part of project
desi n
Not part of project
Air/Water Supply Area Drainage ❑ � desi n
Not part of project
Trash Storage Areas � � desi n
Loading Docks � � Not part of project
desi n
Maintenance Bays � � Not part of project
desi n
Vehicle and Equipment Wash Areas � � Not part of project
desi n
Outdoor Material Storage Areas � � Not part of project
desi n
October 12, 2010 17
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Not part of project
Outdoor Work Areas or Processing Areas ❑ � desi n
Provide Wash Water Controls for Food � � Not part of project
Pre aration Areas desi n
*Details demonstrating proper design must be included in Appendix F.
5.2.1 Non-Structural Source Control BMPs
5.2.1.1 Education
Yes
The owner, as responsible party for implementing the WQMP, will ensure that owner's
employees, operators and managers are properly trained and attend continuing education
classes.
5.2.1.2 Activity Restrictions
Yes
Certain activities within the project area may be restricted to enable the owner/operator to meet
the City's water quality requirements. For example, maintenance of vehicles (which contributes
to storm water contamination by oil and grease) is not authorized in this area.
Similarly, washing of vehicles and other equipment is also not authorized in the parking lot.
Activity restrictions such as these meet the intent of the best management practices.
5.2.1.3 Irrigation System and Landscape Maintenance
Yes
Owner shall ensure that the irrigation systems within the project site are operating properly.
Owner shall also ensure that the ground's landscaping is maintained regularly so that the
project site is in compliance with all City and Coachella Valley Water District water quality
req ui rements.
5.2.1.4 Common Area Litter Control
Yes
Owner shall ensure that the parking lot, landscape area and retention basin are regularly
maintained and kept free of litter so that the project site is in compliance with all City water
quality requirements.
5.2.1.5 Street Sweeping
Yes
Owner shall ensure that the parking lot is regularly swept so that the project site is in
compliance with all City water quality requirements. Streets/driveways and parking lots shall be
swept at least quarterly, including just prior to start of the rainy season (October 1 st). The
frequency shall be no less than the frequency of street sweeping by the Co-Permittee on public
streets.
5.2.1.6 Drainage Facility Inspection and Maintenance
Yes
Owner shall ensure that drainage facilities within the project area are regularly inspected (at
least annually) and maintained properly so that the project site is in compliance with all City
October 12, 2010 1 g
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
water quality requirements. At a minimum, routine maintenance of drainage facilities should
take place in the late summer or early fall prior to the start of the rainy season (October 1 st).
Drainage facilities must be cleaned if accumulated sediment/debris fills 25% or more of the
storage capacity of the facility.
5.2.2 Structural Source Control BMPs
5.2.2.1 MS4 Stenciling and Signage
No
The site does not drain directly to MS4 facilities. Essentially the entire proposed site drains to
an infiltration basin, which is equipped with a drywell to help increase percolation rates.
5.2.2.2 Landscape and Irrigation System Design
Yes
The project will be designed to include native, drought tolerant plants. These plants use less
water, and help reduce the use of fertilizers and pesticides. The irrigation system will be
programmable and utilize drip emitters, limiting excess irrigation runoff. The landscape and
irrigation system will be designed in accordance with the City's water quality requirements and
the Coachella Valley Water DistricYs irrigation requirements.
5.2.2.3 Protect Slopes and Channels
No
The project site does not contain any existing or proposed slopes and channels.
5.2.2.4 Provide Community Car Wash Racks
No
The project site will not include community car wash racks as part of the project design.
Washing of private vehicles and equipment is also a restricted activity.
5.2.2.5 Fueling Areas
No
The project site will not include fueling areas.
5.2.2.6 Air/VVater Supply Area Drainage
No
The project site will not include air/water supply areas.
5.2.2.7 Trash Storage Areas
No
The project site will not include trash storage areas. Trash storage (or trash enclosures) will be
located outside the parking lot area. All trash dumpsters will have attached covers and shall be
leak proof. The entire trash storage surface area will be concrete.
5.2.2.8 Loading Docks
No
The project site will not include loading docks.
5.2.2.9 Maintenance Bays
No
The project site will not include maintenance bays.
October 12, 2010 19
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
5.2.2.10 Vehicle and Equipment Wash Areas
No
The project site will not include vehicle and equipment wash areas.
5.2.2.11 Outdoor Material Storage Areas
No
The project site will not include outdoor material storage areas.
5.2.2.12 Outdoor Work Areas or Processing Areas
No
The project site will not include outdoor work areas or processing areas.
5.2.2.13 Wash Water Areas for Food Preparation Areas
No
The project site will not include wash water areas for preparation areas.
V.3 Equivalent Treatment Control Alternatives
This project will not include any other treatment control alternatives.
V.4 Regionally-Based Treatment Control BMPs
This project will not include any regionally-based treatment control BMPs.
October 12, 2010 20
Whitewater River Region Final WQMP
Alessandro Alley improvement Project
Palm Desert RDA PMW No. 10-165
VI. Operations and Maintenance Responsibility
for BMPs
Appendix G of this project-specific WQMP will include a copy of an executed Covenant and
Agreement used to ensure the ongoing operation, maintenance, funding, transfer and
implementation of the project-specific WQMP requirements as part of the final WQMP.
The City of Palm Desert is the current owner of the parcel which includes the proposed parking
lot and drainage facilities (i.e., an infiltration basin and drywell). As such, the owner, their
agents, and/or their assignees will be responsible for the operations and maintenance of the
project BMPs. Maintenance of the basin and drywell consists primarily of removing trash and
debris from the parking lot and basin, which could potentially clog the drywell and reduce its
potential for infiltration.
The owner has expressed an interest in conveying the parcel to the Apartment Complex owner
prior to construction. The executed Covenant and Agreement will ensure that the current and
future owner(s) comply with the approved WQMP, and operate and maintain the BMPs as
outlined in this WQMP.
October 12, 2010 2l
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
VII. Funding
The Palm Desert Redevelopment Agency will provide funding for implementation of this WQMP
until such time the parcel ownership changes. Note that the City of Palm Desert (owner) has
expressed an interest in conveying the parcel to the Apartment Complex owner prior to
construction. Any conveyance will include this WQMP and an executed Covenant and
Agreement (Appendix G) which will ensure that the current and future owner(s) comply with the
approved WQMP, and operate and maintain the BMPs as outlined in this WQMP. See Section
VI "Operations and Maintenance Responsibility for BMPs"for additional discussion.
October 12, 2010 22
Whitewater River Region Final WQMP
Alessandro Alley Improvement PFoject
Palm Desert RDA PMW No. 10-165
Appendix A
Planning Commission
Meeting Notice of Action
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
�, �
�
�l � � �3'SIO FRED WARiNG DHIYE
t�� .:.: PALM D@SERT,CALIFORNU c�22G0-2g7S
rsc:76o 346—o6ii
infols'c ityofpalmdeses.org
PLANNING COMMiSSION MEETING
NOTICE OF ACTION
Date: August 4, 2010
Arthur and Dora Cohn City of Palm Desert
c/o Palm Desert Redevelopment Agency Attn:Ciiy Clerk
Attn:Bryce White 73-510 Fred Waring Drive
73-510 Fred Waring Drive Palm Desert, California 92260
Paim Desert, California 92260
Re: PMW 10-165
44-845 Las Palmas Avenue
The Pianning Commission of the City of Palm Desert has considered your request and
taken the following action at its regular meeting of August 3,201 d:
THE PLANNING COMMISSION,BY MINUTE MOTION,APPROVED PMW
10-165.THE MOTION CARRfED 5-0.
Any appeal of the above action may be made in writing to the City Clerk, City of Paim
Desert,within fifteen(15)days of the date of the decision.
Lauri Aylaian, Secretary
Paim Desert Planning Commission
/dn
cc: Coachelta Va11ey Water District
Public Worics Department
Building&Safety Department
Fire Marshal
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Paim Desert RDA PMW No. 10-165
Appendix B
Vicinity Map, WQMP Site Plan, and Receiving Waters Map
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Appendix C
Supporting Detail Related to Hydraulic Conditions of Concern
(not applicable)
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Appendix D
Educational Materials
Whitewater River Region Final WQMP
Afessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Appendix E
Soils Report
(not applicable)
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Paim Desert RDA PMW No. 10-165
Appendix F
Site Design and Treatment Control BMP Sizing Calculations/Design Details
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Appendix G
Agreements — CC&Rs, Covenant and Agreements and/or Other
Mechanisms for ensuring ongoing Operation,
Maintenance, Funding and Transfer of
Requirements for this project-specific WQMP
(to be submitted with final WQMP submittat)
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Appendix H
Phase 1 Environmental Site Assessment — Summary of Site
Remediation Conducted and Use Restrictions
(not applicable)
Whitewater River Region Final WQMP
Alessandro Alley Improvement Project
Palm Desert RDA PMW No. 10-165
Appendix I
Project-Specific WQMP Summary Data Form
Project-Specific WQMP Summary Data Form
Applicant Information
Name and Title BryCe White
Company The Palm Desert Redevelopment Agency
Phone (760)346-0611
Email bwhite@cityofpaimdesert.org
Project information
Project Name Alessandro Alley Improvement Project
(as shown on project applicationlproject-specific WQMP) Apartment Parking Lot
Street Address N/A
Nearest Cross Streets Las Palmas Avenue and Alessandro Alley
Municipality City of Palm Desert
(City or Unincorporated County)
Zip Code 92260
Tract Number(s)and/or Assessor Parcel Number(s) APN 627-092-045
Other
(other information to help identify location of project)
Watershed Whitewater River
Indicate type of project. Priority Development Projects(Use an"X"in cell preceding project type):
SF hillside residence; impervious area>_ 10,000 sq.ft.; Slope>_25%
SF hiliside residence; impervious area>_ 10,000 sq.ft.; Slope>_ 10%&erosive soils
Automotive repair shop
Retail Gasoline Outlet disturbing>5,000 sq.ft.
Restaurant disturbing>5,000 sq.ft.
Home subdivision z 10 housing units
X Parking lot>_5,000 sq. ft. or>_25 parking spaces
Date Project-Specific WQMP Submitted July 19,2010
Size of Project Area(nearest 0.1 acre) 0.13
Project Area managed with Site Design or Low 0.13
Impact Development(LID)BMPs(nearest 0.1 acre)
Is the project subject to onsite retention by Yes �
ordinance or policy?
Are Treatment Control BMPs required? Yes
Name of the entity will impiement,operate,and The City of Palm Desert, their agent, and/or assignee
maintain the post-construction BMPs
Contact Name Bryce White
Street or Mailing Address 73-510 Fred Waring Drive
City Palm Desert, CA.
Zip Code 92260
Phone (760) 346-0611
Space Betow for Use by City/County Staff Only
Preceding Information Verified by Name:
(consistent with information in project-specific WQMP) Date:
Date Project-Specific WQMP Approved:
Data Entered by Name:
Date:
Other Comments
WHEN RECORDED MAIL TO:
Rachelle Klassen
City Clerk
City of Palm Desert
73-510 Fred Waring Drive
Palm Desert, CA 92260
Case No. PMW 10-165
For Recorder's Office Use Onlv
No Recording Fee Required per Government Code Section 6103
COVENANT AND AGREEMENT
ESTABLISHING NOTIFICATION PROCESS AND RESPONSIBILITY FOR
WATER QUALITY MANAGEMENT PLAN IMPLEMENTATION AND MAINTENANCE
THIS COVENENT AND AGREEMENT FOR WATER QUALITY
MANAGEMENT PLAN IMPLEMENTATION AND MAINTENANCE is made and entered
into this 9th day of December, 2010, by Citv of Palm Desert, a Municipal Corporation
("Declarant"), with reference to the following facts:
A. Declarant is the fee owner of the real property (the "Property") situated in
the City of Palm Desert, County of Riverside, State of California, and
legally described in Exhibit "A", which is attached hereto and incorporated
within by reference.
B. Declarant has applied to the City of Palm Desert ("City") for
Parcel Map Waiver No. 10-165
C. As a condition of approval and prior to the map recordation and/or issuance
of any permits, the City is requiring Declarant to execute and record an
agreement stating that the future property owners shall be informed of the
requirements to implement and maintain the Best Management Practices
("BMPs") as described in the approved project specific Water Quality
Management Plan.
D. Declarant intends by this document to comply with the conditions imposed
by the City and to impose upon the Property mutually beneficial
restrictions, conditions, covenants and agreements for the benefit of
Property. �
NOW, THEREFORE, for the purpose of complying with the conditions
imposed by the City of Palm Desert for the approval of Case No.PMW 10-165,
Declarant hereby declares that the Property is and hereafter shall be held, conveyed,
transferred, mortgaged, encumbered, leased, rented, used, occupied, sold and
improved subject to the following declarations, limitations, covenants, conditions,
restrictions and easements, all of which are imposed as equitable servitudes pursuant
to a general plan for the development of the Property, for the purpose enhancing and
protecting the value and attractiveness of the Property, and each Parcel thereof, in
accordance with the plan of improvement of the Property, and to comply with certain
conditions imposed by the City for the approval of Case No. PMW 10-165 , and shall be
binding and inure to the benefit of each successor and assignee in the interest of each
such party. Any conveyance, transfer, sale, assignment, lease or sublease made by
Declarant of a Parcel of the Property shall be and hereby is deemed to incorporate be
reference all the provisions of the Covenant and Agreement including, but not limited to,
all the covenants, conditions, restrictions, limitations, grants of easement, rights, right-
of-way, and equitable servitude contained herein.
1. This Covenant and Agreement hereby establishes a notification process for
future individual property owners to ensure they are subject to and adhere
to the Water Quality Management Plan implementation measures and that
it shall be the responsibility of the Declarant, it heirs, successors and
assigns to implement and maintain all Best Management Practices (BMPs)
in good working order.
2. Declarant shall use it best efforts to diligently implement and maintain all
BMPs in a manner assuring peak performance at all times. All reasonable
precautions shall be exercised by Declarant, its heirs, successors and
assigns, in the removal and extraction of any material(s) from the BMPs
and the ultimate disposal of the material(s) in a manner consistent with all
relevant laws and regulations in effect at the time. As may be requested
from time to time by the City, Declarant, its heirs, successors and assigns
shall provide the City with documentation identifying the material(s)
removed, the quantity, and disposal destination.
3. In the event Declarant, or its heirs, successors or assigns, fail to undertake
the maintenance contemplated by this Covenant and Agreement within
twenty-one (21) days of being given written notice by the City, or fails to
complete and maintenance contemplated by this Covenant and Agreement
with reasonable diligence, the City is hereby authorized to cause any
maintenance necessary to be completed and charge the entire cost and
expense to the Declarant or Declarant's succesors or assigns, including
administrative costs, reasonable attorneys fees and interest thereon at the
maximum rate authorized by the Civil Code from the date of the notice of
expense until paid in full. As an additional remedy, the Public Works
Director may withdraw any previous urban runoff-related approval with
respect to the Property on which BMP's have been installed and/or
implemented until such time as Declarant, its heirs, successors or assigns,
repays to City its reasonable costs incurred in accordance with this
paragraph.
4. Any Person who now or hereafter owns or acquires any right, title or
interest in or to any parcel of the Property shall be deemed to have
consented and agree to every covenant, condition, restriction and
easement contained herein.
5. In addition, each of the provisions hereof shall operate as covenants
running with the land for the benefit of the Property and each Parcel thereof
and shall inure to the benefit of all owners of the Parcels thereof, their
successors and assigns in interest, and shall apply to and bind each
successive owner of each Parcel, their successors and assigns in interest.
6. The terms of this Covenant and Agreement may be enforced by the City,
its successors or assigns, and by any owner, lessee or tenant of the
Parcels of the Property. Should the City or any owner, lessee or tenant
bring an action to enforce any of the terms of this Covenant and
Agreement, the prevailing party shall be entitled to costs of suit including
reasonable attorneys' fees.
7. Subject to the prior written approval of the City by its Public Works Director,
any provisions contained herein may be terminated, modified or amended
as to all of the Property or any portion hereof. No such termination,
modification or amendment shall be effective until there shall have been
executed, acknowledged and recorded in the Office of the Recorder of
Riverside County, California an appropriate instrument evidencing the
same including the consent thereto by the City.
IN WITNESS WHEREOF, Declarant has caused this Covenant and
Agreement to be executed as of the day and year first written above.
CITY OF PALM DESERT
Dated: By:
Title: Mavor
APPROVED AS TO FORM:
Name: David J. Erwin
City Attorney
STATE OF )
)
COUNTY OF )
On , before me, , Notary
Public, personally appeared , who
proved to me on the basis of satisfactory evidence, to be the person(s) whose name(s)
is/are subscribed to the within instrument and acknowledgement to me that he/she/they
executed the same in his/her/their authorized capacity(ies), and that by his/her/their
signature(s) on the instrument the person(s), or the entity upon behalf of which the
person(s) acted, executed the instrument.
I certify under PENALTY OF PERJURY under the laws of the State of
that the foregoing paragraph is true and correct.
WITNESS my hand and official seal.
(SEAL)
Notary Public Signature
STATE OF )
)
COUNTY OF )
On , before me, , Notary
Public, personally appeared , who
proved to me on the basis of satisfactory evidence, to be the person(s) whose name(s)
is/are subscribed to the within instrument and acknowledgement to me that he/she/they
executed the same in his/her/their authorized capacity(ies), and that by his/her/their
signature(s) on the instrument the person(s), or the entity upon behalf of which the
person(s) acted, executed the instrument.
I certify under PENALTY OF PERJURY under the laws of the State of
that the foregoing paragraph is true and correct.
WITNESS my hand and official seal.
(SEA�)
Notary Public Signature
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