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EIR (SCH # 2019011044)
Technical Appendices
APPENDIX F
Preliminary Water Quality Management Plan
and
Preliminary Hydrology Report
Prepared by
The Altum Group
73-710 Fred Waring Drive, Suite 219
Palm Desert, CA 92260
December 3, 2018
F-1
Whitewater River Region Preliminary WQMP
Tentative Map 37639 - DSRT SURF
December 3, 2018
OWNER’S CERTIFICATION
This project-specific preliminary Water Quality Management Plan (WQMP) has been prepared
for:
Desert Wave Ventures, LLC
by The Altum Group for the project known as DSRT SURF, located on Desert Willow
Drive within the Desert Willow Golf Resort in the City of Palm Desert.
This Preliminary WQMP is intended to comply with the requirements of the City of Palm Desert
and the requirements of the California Regional Water Quality Control Board MS-4 Permit for
the Colorado River Region Basin for the preparation and implementation of a project-specific
WQMP.
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 in
perpetuity.
The undersigned is authorized to certify and to approve implementation of this WQMP. Th e
undersigned is aware that implementation of this WQMP is enforceable under the City of Palm
Desert 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."
ATTEST
Owner’s Signature
Owner’s Printed Name
Owner’s Title/Position
Date
Desert Wave Ventures, LLC
PO Box 147
Solana Beach, CA 92075
THIS FORM SHALL BE NOTARIZED BEFORE ACCEPTANCE OF THE FINAL PROJECT
SPECIFIC WQMP
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Contents
SECTION PAGE
Contents .....................................................................................................................................2
I. Project Description ............................................................................................................3
II. Site Characterization .........................................................................................................6
III. Pollutants ..........................................................................................................................7
IV. Hydrologic Conditions of Concern .....................................................................................8
V. Best Management Practices ..............................................................................................9
V.1 Site Design and Treatment Control BMPs ............................................................9
V.1.A Site Design BMPs................................................................................11
V.1.B Treatment Control BMPs .....................................................................17
V.1.C Measureable Goal Summary ...............................................................18
V.2 Source Control BMPs ........................................................................................19
V.3 Equivalent Treatment Control Alternatives .........................................................22
V.4 Regionally-Based Treatment Control BMPs .......................................................22
VI. Operations and Maintenance Responsibility for BMPs ....................................................23
VII. Funding ...........................................................................................................................24
TABLES
TABLE 1. POLLUTANT OF CONCERN SUMMARY 7
TABLE 2. BMP SELECTION MATRIX BASED UPON POLLUTANT REMOVAL EFFICIENCY (1) 10
TABLE 3. IMPLEMENTATION OF SITE DESIGN CONCEPTS 12
TABLE 4. SITE DESIGN BMPS MEETING THE MEASUREABLE GOAL IN WQMP SECTION 3.5.1.1 16
TABLE 6. MEASUREABLE GOAL SUMMARY 18
TABLE 7. SOURCE CONTROL BMPS 19
APPENDICES
A. Conditions of Approval (See Final WQMP)
B. Vicinity Map, WQMP Site Plan, and Receiving Waters Map
C. Supporting Detail Related to Hydraulic Conditions of Concern
D. Educational Materials
E. Soils Report
F. Site Design and Treatment Control BMP Sizing Calculations and Design Details (See attached
Preliminary Hydrology Report)
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 (See Final WQMP)
H. Phase 1 Environmental Site Assessment - Summary of Site Remediation Conducted and Use
Restrictions (not applicable)
I. Project-Specific WQMP Summary Data Form
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I. Project Description
Project Owner: Desert Wave Ventures, LLC
PO Box 147
Solana Beach, CA 92075
PWQMP Preparer: The Altum Group
73-710 Fred Waring Drive, Suite 219
Palm Desert, CA 92260
Telephone: (760) 346-4750
Project Site Address: The project is located on Desert Willow Drive within the Desert Willow Golf
Resort in the City of Palm Desert.
Zoning and General Plan: PR – (Planned Residential)
Land Use Designation: Town Center Neighborhood, Resort and Entertainment
APN Number(s): 620-420-024, 620-420-023, 620-400-008
Thomas Bros. Map: Riverside Co. Pg. 818, Grid G2
Project Watershed: Whitewater River
Sub-watershed: N/A
Project Site Size: The total site area is approximately 17.8 acres;
Pervious/Impervious: The entire 17.8 acre will be disturbed during construction. The post-
development impervious area is 16.0 acres (approximately 90%) of
the site. A 6.0 acre Lagoon will be located on-site. Although the
Lagoon is “impervious”, it does not contribute to runoff. Pervious area
is 1.6 acres (approximately 10%) of the site.
Standard Industrial Classification (SIC) Code: 7999, Amusement and Recreation
Formation of Home Owners’ Association (HOA)
or Property Owners Association (POA): Y N
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Additional Permits/Approvals required for the Project:
AGENCY Permit required
Project Description:
The project applicant, Desert Wave Ventures, LLC, is proposing the construction of a surf themed
recreation resort (“DSRT Surf”) within the existing Desert Willow resort development in Palm
Desert, California. The project site consists of three Assessor’s Parcel Numbers (APNs): 620-420-
023 (primary site, approximately 14.65 acres), 620-400-008 and 024 (both consisting of existing
clubhouse parking lot or portions thereof). The development will include a Surf Lagoon and Surf
Center, two-three story hotels and assorted Villas.
In general, Desert Willow is bounded by Cook Street and adjacent residential/commercial
development to the east; Portola Avenue to the west; Country Club Drive to the south; and Frank
Sinatra Drive to the north. The proposed project will be located south of the existing clubhouse with
access off the Desert Willow Drive Roundabout. The proposed development will disturb all of the
vacant parcel on which it is to be constructed. Under both existing and developed conditions, storm
drain runoff generated on-site is designed to be conveyed to the adjacent South Golf Course within
the Desert Willow development, per the original Desert Willow Resort drainage design. Portions of
the existing South Golf Course are designated as drainage “waste” areas (Desert Willow South Golf
Course Hydrology Report – February 12, 1997) where flows from all drainage areas within Desert
Willow Resort can be diverted and collected either underground or into an existing lake where they
are less likely to be visible on the ground surface. Flows exceeding the runoff storage capacity of
the Desert Willow South Golf Course would be well in excess of the 100-yr storm and would exist
the Resort onto an existing public street bordering the Resort site to the south, continuing easterly
then southerly over public surface streets until reaching the Whitewater Storm Channel.
A relatively large (6.1 acres) Surf Lagoon is proposed as part of the development application.
Although technically an impervious surface, rainfall tributary to the on -site Lagoon will not be
directed off -site. Also, the proposed Surf Lagoon is designed to be evacuated frequently via a 16
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inch gravity flow pipe that will convey water stored in the Lagoon to a South Golf Course lake within
Desert Willow Resort.
Appendix A of the project-specific Final WQMP will include a complete copy of the final Conditions
of Approval. Appendix B of this project-specific PWQMP 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 which typically includes 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 (i.e., 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 J to the PWQMP is a one page form that summarizes pertinent information relative to this
project-specific WQMP.
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II. Site Characterization
Land Use Designation or Zoning: Town Center Neighborhood, Resort and Entertainment
PR – (Planned Residential)
Current Property Use: Vacant
Proposed Property Use: Commercial Recreation Resort
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.
Receiving Waters for Urban Runoff from Site
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.
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III. Pollutants
Table 1. Pollutant of Concern Summary
Pollutant Category
Potential for
Project
Causing Receiving Water
Impairment
Bacteria/Virus (pathogens1)
Heavy Metals
Nutrients
Pesticides
Toxaphene2, , DDT and Dieldren
Organic Compounds3 (PCBs)
Sediments and Turbidity
Trash & Debris
Oxygen Demanding Substances
Oil & Grease4
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 project’s 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.
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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.
No This section must be completed.
This Project meets the following condition:
Condition A
Condition B
Condition C
None
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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 local
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 Whitewater River Region 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 of the Whitewater River
Region WQMP specifically requires that the projects Pollutants of Concern be addressed with Site
Design 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.
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Table 2. BMP Selection Matrix Based Upon Pollutant Removal Efficiency (1)
(Excerpted, with minor revision, from the Orange County Water Quality Management Plan dated September 26, 2003
and the San Bernardino Water Quality Management Plan dated April 14, 2004)
Pollutant of
Concern
Biofilters
(2)
Detention
Basins (3)
Infiltration
BMPs (4)
Wet
Ponds
or
Wetlands
(5)
Filtration
Systems (6)
Water
Quality
Inlets
Hydrodynamic
Separator
Systems (7)
Manufactured
or Proprietary
Devices (8)
Sediment/Turbidity H/M M H/M H/M H/M L H/M
(L for
Turbidity)
U
Nutrients L M H/M H/M L/M L L U
Organic
Compounds U U U U H/M L L U
Trash & Debris L M U U H/M M H/M U
Oxygen
Demanding
Substances
L M H/M H/M H/M L L U
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
(non-soil bound) U U U U U L L U
Metals H/M M H H H L L U
Abbreviations:
L: Low removal efficiency H/M: High or medium removal efficiency U: Unknown removal 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.
(9) Per CASQA BMP TC-11, infiltration basins have high removal efficiency of organics and oil and grease. See
attached BMP in Appendix C.
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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 Whitewater River Region WQMP.
Table 3 herein documents the implementation of the Site Design Concepts described in sub-
sections 3.5.1.3 and 3.5.1.4 of the Whitewater River Region WQMP.
Table 4 herein documents the extent to which this project has implemented the goals
described in sub-sections 3.5.1.1 of the Whitewater River Region WQMP.
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Table 3. Implementation of Site Design Concepts
Included
Brief Reason for BMPs
Indicated as No or N/A Design
Concept Technique Specific BMP Yes No N/A
Si
t
e
D
e
s
i
g
n
C
o
n
c
e
p
t
1
Minimize Urban
Runoff, Minimize
Impervious
Footprint, and
Conserve Natural
Areas
(See Whitewater
River Region
WQMP Section
3.5.1.3)
Conserve natural areas by concentrating or cluster
development on the least environmentally sensitive portions
of a site while leaving the remaining land in a natural,
undisturbed condition.
Entire site will be disturbed.
Conserve natural areas by incorporating the goals of the
Multi-Species Habitat Conservation Plan or other natural
resource plans.
Will pay MSHCP fees and/or follow
guidelines as required.
Preserve natural drainage features and natural depressional
storage areas on the site. No natural drainage features exist
onsite.
Maximize canopy interception and water conservation by
preserving existing native trees and shrubs, and planting
additional native or drought tolerant trees and large shrubs.
Use natural drainage systems.
Proposed streets/storm drain system
will convey storm flow to existing off-
site drainage facilities designed to
accommodate them.
Increase the building floor area ratio (i.e., number of stories
above or below ground).
Construct streets, sidewalks and parking lot aisles to
minimum widths necessary, provided that public safety and a
walkable environment for pedestrians is not compromised.
Reduce widths of streets where off-street parking is
available.
Design driveways with shared access, flared (single lane at
street), or wheel strips (paving only under the tires).
Streets and driveways are designed to
City of Palm Desert minimum
standards.
Minimize the use of impervious surfaces, such as decorative
concrete, in the landscape design.
Other comparable and equally effective Site Design BMP (or
BMPs) as approved by the Permittee (Note: Additional
narrative required to describe BMP and how it addresses
site design concept).
Runoff tributary to large on-site Lagoon
does not surface flow off -site.
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Table 3. Site Design BMPs (continued)
Included
Brief Reason for Each BMP
Indicated as No or N/A Design
Concept Technique Specific BMP Yes No N/A
Si
t
e
D
e
s
i
g
n
C
o
n
c
e
p
t
2
Minimize
Directly
Connected
Impervious
Area
(See
Whitewater
River Region
WQMP Section
3.5.1.4)
Residential and commercial sites must be designed to contain and
infiltrate roof runoff, or direct roof runoff to vegetative swales or buffer
areas.
Drain impervious sidewalks, walkways, trails, and patios into adjacent
landscaping.
Runoff from impervious areas will
be collected underground and
conveyed to adjacent landscaped
golf course as intended in the
original golf course design.
Incorporate landscaped buffer areas between sidewalks and streets.
Planter areas are designated
between buildings, sidewalks and
streets.
Uncovered temporary or guest parking on residential lots paved with a
permeable surface, or designed to drain into landscaping.
Parking area runoff to be collected
and conveyed to designated
drainage collection areas.
Rural swale system: street sheet flows to vegetated swale or gravel
shoulder, curbs used at street corners, and culverts used under
driveways and street crossings.
Street sheet flow runoff to be
collected and conveyed to
designated drainage collection
areas within adjacent golf course.
Urban curb/swale system: street slopes to curb; periodic swale inlets
drain to vegetated swale or biofilter.
Street sheet flow runoff to be
collected and conveyed to
designated drainage collection
areas within adjacent golf course
Dual drainage system: first flush captured in street catch basins and
discharged to adjacent vegetated swale or gravel shoulder; high flows
connect directly to MS4s.
Street sheet flow runoff to be
collected and conveyed to
designated drainage collection
areas within adjacent golf course.
Maximize the permeable area by constructing walkways, trails, patios,
overflow parking, alleys, driveways, low-traffic streets, and other low-
traffic areas with open-jointed paving materials or permeable surfaces
such as pervious concrete, porous asphalt, unit pavers, and granular
materials.
Permeable hardscape surfaces will
be constructed where possible.
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Included
Brief Reason for Each BMP
Indicated as No or N/A Design
Concept Technique Specific BMP Yes No N/A
Incorporate parking area landscaping into the drainage design.
All drainage collection areas are off -
site in the existing adjacent golf
course.
Where soil conditions are suitable, use perforated pipe or gravel
filtration pits for low flow infiltration.
Construct onsite infiltration BMPs such as dry wells, infiltration
trenches, and infiltration basins consistent with vector control
objectives.
Existing golf course retention and
infiltration system will be used.
Construct onsite ponding areas or detention facilities to increase
opportunities for infiltration consistent with vector control objectives.
Existing golf course retention and
infiltration system will be used.
Table 3. Site Design BMPs (continued)
Included
Brief Reason for Each BMP
Indicated as No or N/A Design
Concept Technique Specific BMP Yes No N/A
Si
t
e
D
e
s
i
g
n
C
o
n
c
e
p
t
2
(c
o
n
t
’
d
)
Minimize
Directly
Connected
Impervious
Area
(See Whitewater
River Region
WQMP Section
3.5.1.4)
Direct roof runoff into cisterns or rain barrels for reuse.
Roof runoff directed underground
and conveyed to existing off-site
golf course retention facilities
Use vegetated drainage swales in lieu of underground piping or
imperviously lined swales.
No open space opportunities exist.
Runoff will be conveyed to an
existing off-site infiltration system.
Incorporate tree well filters, flow-through planters, and/or bioretention
areas into landscaping and drainage plans.
No open space opportunities exist.
Runoff will be conveyed to an
existing off-site infiltration system.
Other comparable and equally effective Site Design BMP (or BMPs) as
approved by the Permittee (Note: Additional narrative required
describing BMP and how it addresses site design concept).
6 acre Lagoon does not contribute
to off-site runoff.
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Project Site Design BMPs:
The existing adjacent Desert Willow Resort South Golf Course acts as a drainage retention
facility designed to accommodate flows from all drainage areas within Desert Willow Resort.
Alternative Project Site Design BMPs:
No alternatives to the existing adjacent retention basin and storm drain collection facilities have
been proposed.
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Table 4. Site Design BMPs Meeting the Measureable Goal in WQMP Section 3.5.1.1
(1) (2) (3) (4) (5) (6)
DRAINAGE
SUBAREA
ID OR NO.
SITE DESIGN
BMP TYPE *
POLLUTANTS WITHIN SUBAREA
CAUSING RECEIVING WATER
IMPAIRMENTS
RELATIVE EFFECTIVENESS
OF BMP (COLUMN 2) AT
ADDRESSING IDENTIFIED
POLLUTANTS (COLUMN 3)
BMP MEETS
WHICH DESIGN
CRITERIA?
BMP
TRIBUTARY
AREA
(See Table 2) (refer to Table 1) (U, L, M, H/M, H; see Table 2) (identify as VBMP OR QBMP) (nearest 0.1 acre)
ALL INFILTRATION BACTERIA, NUTRIENTS U, H/M VBMP 17.8
TOTAL AREA TREATED W ITH SITE DESIGN BMPS (NEAREST 0.1 ACRE)** 17.8 AC
* Site Design BMPs included in this table are those that completely address the Treatment Requirements for their tributary area.
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17
V.1.B Treatment Control BMPs
Conventional Treatment Control BMPs shall be implemented to address the project’s Pollutants
of Concern as required in WQMP Section 3.5.1 where, and to the extent that, Section V.1.A has
demonstrated that it is infeasible to meet these requirements through implementation of 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 Whitewater River Region WQMP. Supporting documentation for
the sizing of these Site Design BMPs is included in Appendix F (Desert Willow South
Golf Course Hydrology – 2/12/18). *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 Whitewater River Region WQMP. *Section V.1.B must be
completed.
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18
V.1.C Measureable Goal Summary
This section documents the extent to which this project meets the measureable goal described
in the Whitewater River Region WQMP Section 3.5.1.1 of addressing all of the projects
Treatment Requirements with Site Design BMPs.
Table 6. Measureable Goal Summary
(1) (2) (3)
Total Area Treated with
Site Design BMPs
Total Area Treated with
Treatment Control BMPs
% of Treatment
Requirement addressed
with Site Design BMPs
17.8 Ac N/A 100%
Note – The entire 17.8 acre site is treated with site design BMPs.
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19
V.2 Source Control BMPs
This section identifies and describes the Source Control BMPs applicable and implemented on
this project.
Table 7. Source Control BMPs
BMP Name
Check One If not applicable,
state brief reason
Included Not
Applicable
Non-Structural Source Control BMPs
Education for Property Owners, Operators,
Tenants, Occupants, or Employees
Activity Restrictions
Irrigation System and Landscape Maintenance
Common Area Litter Control
Street Sweeping Private Streets and Parking
Lots
Drainage Facility Inspection and Maintenance
Structural Source Control BMPs
MS4 Stenciling and Signage No MS4 facilities
onsite.
Landscape and Irrigation System Design
Protect Slopes and Channels
Provide Community Car Wash Racks Not part of project
design.
Properly Design*:
Fueling Areas No facilities.
Air/Water Supply Area Drainage No facilities.
Trash Storage Areas
Loading Docks
Maintenance Bays No facilities.
Vehicle and Equipment Wash Areas No facilities
Outdoor Material Storage Areas
Outdoor Work Areas or Processing Areas No facilities.
Provide Wash Water Controls for Food
Preparation Areas
*Details demonstrating proper design must be included in Appendix F.
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20
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 all residents and
others 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 to meet the City's
water quality requirements. For example, to eliminate storm water contamination by oil and
grease, service or repair of all vehicles may be restricted to a predesignated area (loading-lay
down area).
Similarly, washing of vehicles shall be restricted to this predesignated area, so as to not
contaminate the storm drain system.
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
requirements.
5.2.1.4 Common Area Litter Controls
Yes
Owner shall ensure that employees regularly patrol the site in an effort to keep it 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 private streets/driveways and parking lots within the project are
regularly swept so that the project site is in compliance with all City water quality requirements.
Streets and parking lots shall be swept at least quarterly, including just prior to start of the rainy
season (October 1st). 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
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 1st).
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
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
December 3, 2018 21
21
No MS4 facilities exist onsite.
5.2.2.2 Landscape and Irrigation System Design
Yes
The project will be designed to include a variety of plants, including native, drought tolerant
plants. These types of 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 District's irrigation
requirements.
5.2.2.3 Protect Slopes and Channels
Yes
Any proposed slopes and channels on site will be provided erosion control measures.
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.
5.2.2.5 Fueling Areas
No
The project site will not include fueling areas.
5.2.2.6 Air/Water Supply Area Drainage
No
The project site will not include air/water supply areas.
5.2.2.7 Trash Storage Areas
Yes
The project site will include trash storage areas. Trash storage (or trash enclosures) will be
located near or along the proposed perimeter access road. the north and south ends of the site.
Also, 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
Yes
Loading dock areas will be kept clean and spills will be cleaned promptly. Non-storm water
discharges are to be kept out of storm drain facilities in the loading dock area. Employees shall
be trained on proper spill response procedures.
5.2.2.9 Maintenance Bays
No
The project site will not include maintenance bays.
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
Yes
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
December 3, 2018 22
22
Outdoor material storage areas will be equipped with temporary coverings (tarps, plastic
sheeting) when not covered permanently o limit or prevent exposure to rainfall which might
otherwise result in contaminated runoff.
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
Yes
All outdoor food preparation areas will be limited to covered, bermed areas with drains
connected to sanitary sewer plumbing.
Appendix D includes copies of the educational materials that will be used in implementing this
project-specific WQMP.
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.
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
December 3, 2018 23
23
VI. Operations and Maintenance Responsibility
for BMPs
Appendix G of the project-specific Final WQMP will include copies of CC&Rs, an executed
Covenant and Agreement, or other mechanism used to ensure the ongoing operation,
maintenance, funding, transfer and implementation of the project-specific WQMP requirements
as part of the Final WQMP.
Operations and maintenance (O&M) will be performed, as necessary, by Desert Wave
Ventures, their agents, and/or their assignees. The BMPs for the project are primarily existing
retention basins or storm water collection systems located within the adjacent Desert Willow
Resort South Golf Course. Maintenance of the site, retention basins, and storm water collection
facilities consists primarily of the removal of trash and debris, repair and removal/reinstallation
of the facility if damaged or saturated by native material (due to wind and water erosion) or
sediment and organic material from human activity. Any removed material must be hauled
away to an approved disposal facility. See Appendix D for a recommended “Infiltration System
Maintenance Plan”.
Routine inspection and required maintenance of all BMPs and the site should begin immediately
upon completion of construction and continue throughout the life of the project. Records of all
inspection and repair/modifications shall be kept by the owner. The following persons shall be
responsible for all O&M and inspections, until such time as another staff member is designated:
Doug Sheres – Managing Member
Desert Wave Ventures, LLC
PO Box 147
Solana Beach, CA 92075
Doug@Paramocap.com
John Luff – Managing Member
Desert Wave Ventures, LLC
PO Box 147
Solana Beach, CA 92075
John@FS-Ventures.com
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
December 3, 2018 24
24
VII. Funding
Source funding and long term funding will be provided by Desert Wave Ventures, LLC, their
agents, and/or assignees. Operations and maintenance of the project BMPs are to be
scheduled and implemented regularly and continuously during the life of the project. Funding is
addressed in an agreement which will be included in the Final WQMP.
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
Appendix A
Conditions of Approval
(See Final WQMP)
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
Appendix B
Vicinity Map, WQMP Site Plan, and Receiving Waters Map
!(
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Desert Wave
Legend
Drainage Overflow Path
Whitewater River
Tahquitz Creek
Coachella Valley Storm Channel
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
Appendix C
Hydraulic and Hydrologic Summary of Findings
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
Appendix D
Educational Materials
What is stormwater runoff?
Why is stormwater runoff
a problem?
The effects of pollution
Stormwater runoff occurs when precipitation
from rain or snowmelt flows over the ground.
Impervious surfaces like driveways, sidewalks,
and streets prevent stormwater from
naturally soaking into the ground.
Stormwater can pick up debris, chemicals, dirt, and other
pollutants and flow into a storm sewer system or directly to
a lake, stream, river, wetland, or coastal water. Anything that
enters a storm sewer system is discharged untreated into
the waterbodies we use for swimming, fishing, and providing
drinking water.
Polluted stormwater runoff can have
many adverse effects on plants, fish,
animals, and people.
Sediment can cloud the water
and make it difficult or
impossible for aquatic plants to
grow. Sediment also can
.
destroy aquatic habitats
Excess nutrients can cause
algae blooms. When algae die,
they sink to the bottom and decompose
in a process that removes oxygen from
the water. Fish and other aquatic
organisms can’t exist in water with low
dissolved oxygen levels.
Bacteria and other pathogens can wash
into swimming areas and create health
hazards, often making beach closures
necessary.
Debris—plastic bags, six-pack rings, bottles, and
cigarette butts—washed into waterbodies can choke, suffocate, or
disable aquatic life like ducks, fish, turtles, and birds.
Household hazardous wastes like insecticides, pesticides, paint,
solvents, used motor oil, and other auto fluids can poison aquatic life.
Land animals and people can become sick or die from eating diseased
fish and shellfish or ingesting polluted water.
Polluted stormwater often
affects drinking water
sources. This, in turn, can
affect human health and
increase drinking water
treatment costs.
After the Storm
EPA 833-B-03-002
January 2003
For more information contact:
or visit
www.epa.gov/npdes/stormwater
www.epa.gov/nps
A Citizen’s Guide to
Understanding Stormwater
WHEN IT RAINS
IT DRAINS
WHEN IT RAINS
IT DRAINS Internet Address (URL) HTTP://www.epa.gov
Recycled/Recyclable Printed With Vegetable
Oil Based Inks on 100% Postconsumer,
Process Chlorine Free Recycled Paper
●
●
Auto care
Washing your car and
degreasing auto parts at home
can send detergents and other
contaminants through the
storm sewer system. Dumping
automotive fluids into storm
drains has the same result as
dumping the materials directly
into a waterbody.
Pet waste
Pet waste can be
a major source of
bacteria and
excess nutrients
in local waters.
When walking
your pet,
remember to pick up the
waste and dispose of it
properly. Flushing pet
waste is the best disposal
method. Leaving pet waste
on the ground increases
public health risks by
allowing harmful bacteria
and nutrients to wash into
the storm drain and
eventually into local
waterbodies.
Septic
systems
Leaking and
poorly
maintained
septic
systems release nutrients and
pathogens (bacteria and
viruses) that can be picked up
by stormwater and discharged
into nearby waterbodies.
Pathogens can cause public
health problems and
environmental concerns.
Lawn care
Excess fertilizers
and pesticides
applied to lawns
and gardens wash
off and pollute
streams. In
addition, yard
clippings and
leaves can wash
into storm drains and contribute
nutrients and organic matter to streams.
Education is essential to changing people's behavior.
Signs and markers near storm drains warn residents
that pollutants entering the drains will be carried
untreated into a local waterbody.Recycle or properly dispose of household products that
contain chemicals, such as insecticides, pesticides, paint,
solvents, and used motor oil and other auto fluids.
Don’t pour them onto the ground or into storm drains.
Use a commercial car wash that treats or
recycles its wastewater, or wash your car on
your yard so the water infiltrates into the
ground.
Repair leaks and dispose of used auto fluids
and batteries at designated drop-off or
recycling locations.
Don’t overwater your lawn. Consider
using a soaker hose instead of a
sprinkler.
Use pesticides and fertilizers
sparingly. When use is necessary, use
these chemicals in the recommended
amounts. Use organic mulch or safer
pest control methods whenever
possible.
Compost or mulch yard waste. Don’t
leave it in the street or sweep it into
storm drains or streams.
Cover piles of dirt or mulch being
used in landscaping projects.
Inspect your system every
3 years and pump your
tank as necessary (every 3
to 5 years).
Don't dispose of
household hazardous
waste in sinks or toilets.
Dirt, oil, and debris that collect in
parking lots and paved areas can be
washed into the storm sewer system
and eventually enter local
waterbodies.
Sweep up litter and debris from
sidewalks, driveways and parking lots,
especially around storm drains.
Cover grease storage and dumpsters
and keep them clean to avoid leaks.
Report any chemical spill to the local
hazardous waste cleanup team.
They’ll know the best way to keep
spills from harming the environment.
Erosion controls that aren’t maintained can cause
excessive amounts of sediment and debris to be
carried into the stormwater system. Construction
vehicles can leak fuel, oil, and other harmful fluids
that can be picked up by stormwater and
deposited into local waterbodies.
Divert stormwater away from disturbed or
exposed areas of the construction site.
Install silt fences, vehicle mud removal areas,
vegetative cover, and other sediment and
erosion controls and properly maintain them,
especially after rainstorms.
Prevent soil erosion by minimizing disturbed
areas during construction projects, and seed
and mulch bare areas as soon as possible.
Uncovered fueling stations allow spills to be
washed into storm drains. Cars waiting to be
repaired can leak fuel, oil, and other harmful
fluids that can be picked up by stormwater.
Clean up spills immediately and properly
dispose of cleanup materials.
Provide cover over fueling stations and
design or retrofit facilities for spill
containment.
Properly maintain fleet vehicles to prevent
oil, gas, and other discharges from being
washed into local waterbodies.
Install and maintain oil/water separators.
Lack of vegetation on streambanks can lead to erosion. Overgrazed pastures can also
contribute excessive amounts of sediment to local waterbodies. Excess fertilizers and
pesticides can poison aquatic animals and lead to destructive algae blooms. Livestock in
streams can contaminate waterways with bacteria, making them unsafe for human contact.
Keep livestock away from streambanks and provide
them a water source away from waterbodies.
Store and apply manure away from waterbodies and in
accordance with a nutrient management plan.
Vegetate riparian areas along waterways.
Rotate animal grazing to prevent soil erosion in fields.
Apply fertilizers and pesticides according to label
instructions to save money and minimize pollution.
Permeable Pavement
Rain Barrels
Rain Gardens and
Grassy Swales
Vegetated Filter Strips
—Traditional concrete and
asphalt don’t allow water to soak into the ground.
Instead these surfaces rely on storm drains to
divert unwanted water. Permeable pavement
systems allow rain and snowmelt to soak through,
decreasing stormwater runoff.
—You can
collect rainwater from
rooftops in mosquito-
proof containers. The
water can be used later on
lawn or garden areas.
—Specially
designed areas planted
with native plants can provide natural places for
rainwater to collect
and soak into the
ground. Rain from
rooftop areas or paved
areas can be diverted
into these areas rather
than into storm drains.
—Filter strips are areas of
native grass or plants created along roadways or
streams. They trap the pollutants stormwater
picks up as it flows across driveways and streets.
Residential landscaping
Improperly managed logging operations can result in erosion and
sedimentation.
Conduct preharvest planning to prevent erosion and lower costs.
Use logging methods and equipment that minimize soil disturbance.
Plan and design skid trails, yard areas, and truck access roads to
minimize stream crossings and avoid disturbing the forest floor.
Construct stream crossings so that they minimize erosion and physical
changes to streams.
Expedite revegetation of cleared areas.
Commercial
Stormwater Pollution Solutions
Construction
Agriculture Automotive
Facilities
Forestry
Infiltration System
Inspection and Maintenance Checklist
Property Address: Property Owner:
Treatment Measure No.: Date of Inspection: Type of Inspection: Monthly Pre-Wet Season
After heavy runoff
Inspector(s): End of Wet Season Other:_____________
Defect Conditions When Maintenance Is Needed Maintenance
Needed?
(Yes/No)
Comments (Describe maintenance
completed and if needed maintenance
was not conducted, note when it will be
done)
Results Expected When Maintenance
Is Performed
1. Standing Water When water stands in the infiltration system between storms and does not drain within 3
days after rainfall.
There should be no areas of standing water once inflow has ceased. Any of
the following may apply: sediment or
trash blockages removed, improved grade from head to foot of infiltration system.
2. Trash and Debris Accumulation Trash and debris accumulated in the infiltration system. Trash and debris removed from infiltration system and disposed of properly.
3. Sediment Evidence of sedimentation in system. Material removed and disposed of properly so that there is no clogging or blockage.
4. Inlet/Outlet Inlet/outlet areas clogged with sediment or debris, and/or eroded.
Material removed and disposed of properly so that there is no clogging or
blockage in the inlet and outlet areas.
5. Overflow Spillway Clogged with sediment or debris, and/or eroded. Material removed and disposed of properly so that there is no clogging or blockage, and system is restored to design condition.
6. Miscellaneous Any condition not covered above that needs attention in order for the infiltration system to
function as designed.
Meet the design specifications.
Infiltration System Maintenance Plan
for
Routine Maintenance Activities
The principal maintenance objective is to prevent sediment buildup and
clogging, which reduces pollutant removal efficiency and may lead to system
failure. Routine maintenance activities, and the frequency at which they will be
conducted, are shown in Table 1.
Table 1
Routine Maintenance Activities for Infiltration Systems
No. Maintenance Task Frequency of Task
1 Remove obstructions, debris and trash from infiltration
system and dispose of properly. Drywells may cleaned by
vacuuming the upper chamber with a vacuum truck.
Monthly, or as needed after storm
events
2 Inspect system to ensure that it drains between storms,
and within 3 days after rainfall. Check drywell/observation
well 2-3 days after storm to confirm drainage.
Monthly during wet season, or as
needed after storm events
3 For drywells, replace filter material (and screen if it is
damaged) in accordance with City of Rancho Mirage
Standard Detail No. 306 (see attached).
Monthly, or as needed after storm
events
4 Monitor drywell/observation well to confirm that system
has drained during dry season.
Annually, during dry season
5 Remove any trash, grass clippings and other debris in the
streets, gutters or parking area (see BMP SC-43) and
near the system perimeter. Dispose of properly.
As needed
6 Inspect infiltration system using the inspection checklist. Monthly, or after storm events 1” or
greater, and after removal of
accumulated debris or material
Mosquito Abatement
Standing water shall not remain in the treatment measures for more than three days, to
prevent mosquito generation.
Inspections
The Infiltration System Inspection and Maintenance Checklist provided shall be
used to conduct inspections monthly (or as needed), identify needed
maintenance, and record maintenance that is conducted.
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-1
10. PUBLIC EDUCATION AND OUTREACH
WATERSHED SPECIFIC EDUCATIONAL ACTIVITIES CONDUCTED DURING THE
REPORTING PERIOD
This section provides an overview of watershed specific education activities conducted by the
Permittees. During the reporting period Appendix E contains images of most public education
materials that are described in this section.
Program Overview
The Riverside County NPDES Permittees have established an ongoing watershed based public
education and outreach program known as the “Only Rain Down the Storm Drain” pollution
prevention program. The specific objectives of the public education program include:
• Fostering a broad public awareness of water pollution concerns;
• Increasing public acceptance of pollution prevention activities to curtail everyday human
behaviors that contribute to water quality problems;
• Educating/informing the general public, regulators and key local government and state
decision makers on Urban Runoff conditions in Riverside County; and
• Promoting stewardship of local water resources.
The “Only Rain Down the Storm Drain” program implements the public awareness objectives by
focusing on three areas of pollutant reduction/prevention:
• Public Behavior;
• Proper Management of Pollutants; and
• Business Specific Education Outreach.
In addition, when attempting to make use of the finite resources available to the Public Education
Program, the Permittees use these management goals to ensure that resources are used effectively:
• Focusing on pollutants of concern specific to each watershed region;
• Coordinating public education efforts with adjacent storm water management programs and
other related education programs to share resources, coordinate outreach efforts, and avoid
costly duplication of effort; and
• Adapt public education programs and objectives, based on effectiveness analysis, to address
changing MS4 programs and objectives.
Program Highlights
The public education program continues to develop changes for the better. Highlights include:
• The public education program has developed surveys in both English and Spanish. The
purpose of these surveys is to evaluate the effectiveness of the public education program
and are distributed to the public at community events. The results of these surveys are
contained in Appendix E. Two surveys were also developed for the K-3 and 4 through 6
grades education outreach programs.
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-2
• The public education web page continues to be revamped and improved.
• The program continues to update brochures and develop outreach programs specific to the
needs of the MS4.
• As part of the on-going effectiveness evaluation for the municipal training programs,
testing has been incorporated into the training for evaluation of its efficiency. In addition,
the overall training program was evaluated and is included in the Assessment and
Enhancement Analysis of the NPDES Traning Program, August 2006 in Appendix E.
• Each month, the County hosts a New Employee Orientation to an average of forty new
employees. All the attendees receive “Only Rain Down the Storm Drain” materials and
promotionals. The Toll Free 800 Number the message to call to report illegal storm drain
disposal is incorporated into all materials.
Santa Ana Pollutants of Concern
Based on monitoring data collected to date, the current 303(d) list and discussions among the Co-
Permittees, and stakeholders, the following preventative pollutants of concern were established for
this watershed. More discussion on the selection of preventative pollutants of concern can be
found in the monitoring section of this report. After each identified pollutant, specific BMP
outreach activities are identified to address the pollutant:
• Sedimentation associated with Urban Development and Land Uses
o Specific section on construction, municipal, industrial/commercial and new
development training focusing on the need to address sedimentation within the
watershed;
o Distribution of dust pans at public education outreach events to promote dry cleaning of
drive ways and impervious surfaces;
o Construction BMP Poster;
o School/Student program incorporates education on controlling soil erosion;
o The “After the Storm” and Storm Water Pollution, what you should know brochures
o General Construction Activities & Outdoor Activities brochure
• Nutrients and pathogens associated with Urban Development and Land Uses
o Specific section on construction, municipal, industrial/commercial and new
development training focusing on the need to address increased nutrients within the
watershed;
o Pet Waste “What’s the Scoop” brochure;
o Partnership with SGA Advertising to place pet waste information in pet stores,
veterinarian clinics, kennels and pet grooming facilities;
o Coordination with Riverside County Animal Control Department to distribute “What’s
the Scoop” and “After the Storm” brochures to families adopting pets;
o The Agricultural Commissioner assist in educating on water conservation, fertilizer
management and integrated pest management practices. In conjunction with County
Waste Management’s Composting Workshop, the “After the Storm” brochure and
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-3
Household Hazardous Waste flyer is included in the adult informational packet.
o "Keep Our Water Clean" video to cover proper use of fertilizers as well as excess runoff
from sprinklers;
o Earth Day mailing inserts were developed to inform residents about the problem of
storm water pollution and provide simple pollution prevention activities in gardening;
o Adult presentations conducted by RCRCD discussing the effects of fertilizers and
pesticides on local waterways;
o The “After the Storm” brochure; and
o Construction BMP Activities brochure and poster.
In addition, the District has developed other outreach materials to focus on other pollutants and
pollutant causing activities/businesses commonly associated with urban runoff. Outreach methods
can be combined to focus on specific pollutants that may exist within the watershed.
24-hour Watershed-Wide Outreach Portals
The Permittees maintain three 24-hour/7 days per week watershed wide portals to receive and
distribute information regarding the “Only Rain Down the Storm Drain” program. These portals
include a website, 1-800 number, and an e-mail address.
Storm Water Protection Program Website
The District operates a website that provides information on how to report illegal dumping,
clogged storm drains, facility signage and worn or missing curb markers, as well as provide
information on upcoming activities, opportunities for public participation in program development
and general information about Urban Runoff pollution prevention techniques. The website is
located at:
http://www.floodcontrol.co.riverside.ca.us/stormwater/
Almost all of the District’s outreach materials have been scanned into an electronic .pdf format and
are available for download. Online Order forms and phone numbers are also available to assist in
obtaining information that might not be available online.
The website contains pages specific to the following target audiences:
• General Public/Residents
• Businesses
• Developers
• Contractors
• Schools and Teachers
• Kids Page
In addition the website contains links to:
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-4
• Assist viewers in locating their watershed
• An online media library
• Materials order form
• 1-800 information to report storm drain pollution
The District tracks the number of hits to its public education website. The website was completely
revamped during the previous reporting period and the web-page counter replaced this reporting
period. Results of the webpage counter report are included in Appendix E.
Storm Water toll free 1-800 Hotline
On October 1994, a Toll Free “800” telephone number for reporting suspected Urban Runoff
pollution and obtaining pollution prevention information was established.
1. This call line offers easy to understand instructions for connecting to County Environmental
Health or Waste Management to obtain grasscycling, composting, or household hazardous
waste collection dates and locations.
2. The 24-hour Hotline also allows callers to report clogged catch basin inlets, illegal dumping
and other illicit discharge violations.
3. Finally, the hotline allows people to order public education materials and/or request storm
water presentations for schools or community groups. The Permittees advertise the hotline
in all appropriate County telephone directories, public education outreach materials, and in
other appropriate venues and locations. Callers to the hotline are given options to seek
emergency services if the spill is of a suspicious origin or a safety issue.
The 1-800 line diverts callers to appropriate Permittee departments based on caller selections.
Callers requesting information on pollution collection activities are diverted to either County
Environmental Health or Waste Management depending on their specific selection. Callers
reporting illicit discharges are directed to County Code Enforcement, who accepts the calls and
then re-directs them to appropriate Permittee Code Enforcement Departments. Calls for public
education materials or presentations are directed to the district’s front desk and then to the
District’s Public Education Staff. School presentation inquiries are directed to the Riverside
County Conservation District office, who have been contracted to provide education to elementary
schools in the Santa Ana Region. The specific text to the hotline is included as Exhibit A.
The provider of the 1-800 line, Riverside County Communication, tracks the number of incoming
calls to the line. This tracking mechanism was discontinued during past reporting period but
restored this reporting period.
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-5
Exhibit A
“ONLY RAIN DOWN THE STORM DRAIN” POLLUTION PREVENTION PROGRAM
TOLL FREE 1-800 LINE DIALOGUE
Thank you for calling the “Only Rain Down the Storm Drain” Pollution Prevention Program. To better serve the needs
of our County communities, please listen carefully to the following options:
If this is an emergency, or you wish to report a significant release or threatened releases of hazardous material into the
storm drain or elsewhere in the environment, please hang up and immediately Dial 911.
(Si esta llamada es una emergencia o decea reportar desechos de contaminantes peligrosos en las alcantarillas o en el
medio ambiente, por favor cuelge y llame 911.)
For water service connection, disconnection, or any other water utility information, call your local water service
provider.
To report illegal dumping at residential, commercial, industrial or construction sites, please call Environmental Health
at 951.955.8982, or press #1 to be directly connected.
For information regarding Household Hazardous Waste Collection Events, please Press #2.
To report clogged storm drains, please call your local municipal public works department. To report faded or missing
“Only Rain Down the Storm Drain” storm drain markers, please press #3.
For General or specific business pollution prevention information or to receive other pollution prevention information
please press #3.
(Drop Off Dialogue)
Thank you for your interest in obtaining information on storm drain pollution protection. Basic, construction,
industrial, commercial and children’s storm water protection outreach packets are available. For a quick response to
your request, please slowly and clearly leave your name, address, city and zip code. Also state the type and quantity of
the materials you are interested in receiving. Should you need additional assistance, provide your area code and phone
number and someone will contact you as soon as possible.
To inquire about our free storm water classroom presentations, workshops, youth group activities and other outreach
programs, please press #4.
(Drop Off Dialogue)
The “Only Rain Down the Storm Drain” public education program offers classroom presentations, workshops, youth
group activities, special event opportunities and other programs. For inquiries for the Temecula or Murrieta area,
please press #1 (Drops to Mission Resource Conservation District)
For inquiries in all other Riverside County areas, press 2 (drops to Riverside/Corona Resource Conservation District).
For Grasscycling and composting information or workshops, please PRESS #5. (to 951.486.3200)
For additional assistance regarding our storm drain pollution prevention program during regular business office hours,
Monday through Thursday from 7:30 am to 5:30 pm and on Friday from 7:30 am to 4:30 pm
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-6
E-mail
The Permittees also maintain an e-mail address that can be used to report illicit discharges or
request storm water related public information. The e-mail address is:
Flood.fcnpdes@co.riverside.ca.us
E-mails are received by the District’s Public Information Specialist and are responded to, in most
cases, within 2 business days.
Program Coordination with other Stakeholders
The “Only Rain Down the Storm Drain” program has used partnerships to leverage and increase
available resources. The Permittees utilize every opportunity to work with Co-permittees, local
environmental groups, and other public, private and business organizations to maximize use of
existing distribution outlets, events, programs and materials. Impressions, attendance, and other
measures of effectiveness relative to these programs are included in Appendix E (Public
Education) of this Watershed Annual Report.
To facilitate statewide awareness of storm water public education, educate local and state decision
makers, and assist in the development of more effective public education outreach programs, the
District participates in the following public education committees:
• Public Information Public Participation Committee (PIPP) – A subcommittee of the
California Storm Water Quality Association, and
• Western Regional Pollution Prevention Network (WRPPN)
To leverage education outreach resources and coordinate public education activities with other
environmental programs, the Permittees closely coordinate and/or have existing partnerships with
the following entities/organizations:
• Household Hazardous Waste Information Exchange (HHWIE); This is an eGroup that
provides household hazardous waste affiliates the ability to better communicate, share ideas
and the latest in legislative rulings.
• Riverside-Corona Resource Conservation District (RCRCD);
• Partnership to provide student education outreach in the Santa Ana and Whitewater
Watersheds
• Partnership to provide adult education outreach activities in the Santa Ana and Whitewater
Watersheds
• Partnership to provide support services for public education outreach activities at
community events
• Mission Resource Conservation District (RCRCD);
• Partnership to provide student education outreach in the Santa Ana and Santa Margarita
Watersheds
• Partnership to provide adult education outreach activities in the Santa Ana and Santa
Margarita Watersheds
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-7
o Partnership to provide support services for public education outreach activities at
community events
• California Regional Environmental Education Community Network (CREEC)
o A network whose mission is to develop a communication network which provides
educators with access to high quality environmental education resources to enhance
the environmental literacy of California students.
• Santa Ana River Watershed Clean Up Stakeholders Group in coordination with Riverside
Corona Conservation District, Keep Riverside Clean and Beautiful and the California
Coastal Commission’s Coast. This collaboration of environmental partners support and
encourage volunteers, allies and groups to gather for a day to remove trash and debris from
the Santa Ana River that might otherwise flow downstream, through the river to the ocean.
• In addition the “Only Rain Down the Storm Drain” program also coordinates with the
following City/County departments to distribute appropriate storm water education
outreach materials:
o City/County/District Front Counters
o County Waste Management
o County Public Health Department
o Agriculture Department
o County Executive Offices
o Code Enforcement
o County Parks
o Animal Control;
o Economic Development Agency
o County Assessor/Recorders Office
o Bio-terrorism
o Fleet Services
o Human Resources
o Library System
o Central Mail
Stamp on every piece of mail sent by the County that identifies the 1-800
Number and requests that citizens call it to report storm drain pollution.
o County Safety
o County DPSS
o Transportation and Land Management
In general, brochures and promotional items are provided to these departments for distribution
in public lobbies, training sessions, through customer interactions and new employee
orientations.
Finally, the “Only Drain Down the Storm Drain” Program also coordinates with the following
state and/or local government or business entities to distribute public education information:
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-8
• Western Riverside Council of Governments
• Santa Ana Regional Water Quality Control Board
• Orange County Watershed & Coastal Resources Division
• Santa Ana Watershed Association
• South Coast Air Quality Management District
• Santa Rosa Plateau
• Bureau of Reclamation
• Elsinore Valley Municipal Water District
• Metropolitan Water District
• Lake Elsinore/San Jacinto Watershed Authority
• Eastern Municipal Water District
• The Water Education Center
• Rancho California Water District
• Valley Greeters
• Department of Water Resources Southern District
• Western Municipal Water District
• Business Industrial Association (BIA)
• Caltrans
Outreach Tools to Change Public Behavior
The “Only Rain Down the Storm Drain” program conducts a wide range of outreach activities to
residents, students, community groups, new home owners, homeowner associations; informing
them of how their “everyday activities” may contribute to the pollution of Receiving Waters, and
encouraging them to adopt alternatives that will lessen or eliminate pollution-causing behaviors.
Program efforts include providing information on pollution prevention techniques and informing
residents about the proper disposal of household hazardous wastes, construction materials, used
motor oil, pet waste and litter. Public education materials and media emphasize the theme that all
citizens have a role to play in reducing and preventing the polluting of Receiving Waters. The goal
is to present a clear and consistent message that explains the simple connections between people’s
everyday activities and their impacts upon Receiving Water quality.
As the public education and outreach program continues to be implemented and enhanced, the
Permittees hope to broaden public awareness of Urban Runoff quality problems, promote proper
disposal of household hazardous waste and motor oil, encourage illegal discharge reporting, foster
good stewardship of Receiving Waters, and take personal responsibility for their actions in
preventing pollution.
While public education outreach at events indicates that most people are willing to act in an
environmentally responsible manner if given simple ways to change their behavior to avoid
polluting our water bodies; most are unaware of the sources of pollution from everyday urban land
use. The “Only Rain Down the Storm Drain” pollution prevention program using various media
forms educates the County’s population about modified behaviors to prevent storm water pollution
by focusing on residents, general public, students, home gardeners, do-it-yourselfers, mobile
businesses, etc.
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-9
Direct Outreach Methods
The “Only Rain Down the Storm Drain” program interfaces directly via program staff, or through
contracts and partnerships, to the public through attendance at community events, school education
programs, adult education programs and/or by providing classroom based training. Specific
outreach activities, segregated by target audiences, are described below.
General Community Outreach
The “Only Rain Down the Storm Drain” program participates in various community events to
ensure that our message is delivered to the largest possible municipal audience. At these
community events, surveys, to assess overall program effectiveness, have been used.
In addition, the “Only Rain Down the Storm Drain” program has partnered with County
Environmental Health to ensure that a storm drain pollution prevention material is available and
distributed at all Household Hazardous Waste and Antifreeze, Batteries, Oil and Paint Collection
Centers and/or Events throughout each of the Watershed Region’s within Riverside County. These
events provide free disposal sites for receiving common pollutants that can impair Receiving
Waters.
Elementary School Outreach
Elementary (K-6)
The Riverside County Resource Conservation District (RCRCD) continues to provide a variety of
K-6 education programs for the “Only Rain Down the Storm Drain” Program. The K-6 education
program includes materials such as the Storm Water Pollution Prevention Patrol workbook, the
Fancy Fin hands-on classroom presentation and accompanying coloring book, various word match
and crossword activity sheets and videos. A second story line featuring Fancy Fin and her friend
Phinnious J. Green (a Pacific Tree Frog) educate students about point and non-point pollution and
their effects on the environment and other creatures in the watershed. School materials are offered
to all public and provide schools in the Santa Ana Watershed Region, as well as to youth groups
such as the boy and girl scouts.
Secondary Schools
A video entitled “How to Conduct an Environmentally Friendly Car Wash and Make Money Too”
was developed for the “Car Wash Challenge” program. An accompanying flyer is also used which
informs students/groups of the potential storm water problems generated from car wash runoff, and
provides practical BMPs to minimize or eliminate contaminated runoff. The original focus of the
program was high school clubs. However, after contacting several high schools, it was discovered
that car washing fundraisers are relatively rare and revenue deficient in comparison with other high
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-10
school fund raising activities. Nevertheless, church groups, scout troops and other organizations do
conduct car wash fundraisers. Thus, the scope of the Car Wash Challenge program has been
expanded to include these additional fundraising organizations.
Adult Outreach
Valley Greeters is a “Welcoming Wagon” business taking discount coupons, product samples and
general vicinity information door to door to new residents and homeowners to the Temecula,
Murrieta and Lake Elsinore area. For the past four years, Valley Greeters has included our MS4
materials, (After the Storm; What’s the Scoop; Pool, Spa and Fountain Maintenance and HHW
Collection Schedule). This information is accompanied with a handy full size dustpan, shop cloth
and vehicle air freshener. Every material and promotional is clearly imprinted with the 1-800 Toll
Free number for reporting illegal discharges into the storm drain. Young family members receive a
copy of Fancy Finn and box of crayons. This business is solely dependent on the status of the
construction economy and by January, 07 experienced a considerable slowdown.
The “Only Rain Down the Storm Drain” program contracts with the Riverside/Corona Resource
Conservation District for public outreach. Storm Water Pollution Prevention presentations are
given to community groups who call and request such services.
Steve Groner & Associates has been retained to prepare and present workshops at major home
improvement stores throughout Riverside County. The workshops include passing out reading
material regarding targeted BMPs to the public through established corporate partnerships (paint,
hardware, home show coordinators, home improvement, garden centers, nurseries and pet stores).
All commercial employees are informed about storm water impacts that could occur from the
improper application of all types of home and garden hazardous chemicals. In turn, the employees
are then able to share with customers on the proper use and disposal of products that are potential
storm drain pollutants. Attendees at the workshop receive “Only Rain Down the Storm Drain”
promotionals to help emphasize the storm water pollution prevention message. Fixed advertising
tools such as counter displays, tear sheets have been placed throughout to attract attention.
Brochures
Residential: After the Storm; Storm Water Pollution and the Solutions, Household Hazardous
Waste Collection Schedule, Outdoor Activities; Swimming Pool, Jacuzzi and Fountain
Maintenance; and What’s the Scoop (Pet waste).
Outreach Materials
In addition to the brochures mentioned above, the program utilizes other effective outreach
materials such as, magnets, a billboard ad, videos, newspaper supplements, flyers, door knob
hangers, calendars, promotionals items, workbooks, curriculum, shop rags, shelf talkers, tear
sheets, posters and print ads to cultivate interest in the program.
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-11
A door hanger is also being utilized to help address problem discharges that are commonly
observed in residential settings. The door hanger notifies the recipient that a problem discharge
was observed flowing in to the street and offering help by following recommended pollution
prevention activities. The door hanger is provided to all cities and is used by various County
departments and the NPDES staff when conducting field or site activities/inspections.
Mailing Inserts/Slugs
The “Only Rain Down the Storm Drain” Pollution Prevention Program encourages advertising the
County’s Household Hazardous Waste Collection events via the use of mail inserts. The inserts are
included in various utility bills and special notice mass mailings.
In addition, the “Only Rain Down the Storm Drain” program has coordinated with the County Mail
Department to have the postage meter carry the “Only Rain Down the Storm Drain” message and
the 1-800 Toll Free number to report an illegal storm drain disposal or spill. In 05/06, over
5,000,000 pieces of outgoing County mail were stamped with the message. In November of 06, the
postage system was replaced with more sophisticated postage meter units but the cost of the ink in
the new system far exceeded the costs and benefits from other media options and therefore this
media venue was dissolved.
Media Outreach
The “Only Rain Down the Storm Drain” Program continues to utilize various mass media to reach
the public and promote the storm water pollution prevention. Special newspaper inserts, fliers, and
advertisements help increase public awareness of storm water pollution and environmental
protection.
• Our Sixth Edition of a four-page insert called the National Pollution Prevention or P-2,
(National Pollution Prevention Week recognization), was distributed Countywide through
the PennySaver. The insert included topics on proper disposal of pet waste, pesticide
alternatives, motor oil recycling, grass-cycling, pool and spa best management practices,
storm drain marking program, storm water school presentations, general storm drain
pollution protection, business storm water pollution information, household hazardous
waste (HHW) collection events, syringe disposal program, composting workshops and
motor oil specific recycling locations. The insert is released to over 650,500 Riverside
County homes generating an increase of calls to the 800 Toll Free Hotline and District
IC/ID investigations.
Cooperative Used Oil Program
The Western Riverside Council of Governments (WRCOG) is responsible for administering the
Used Oil Block Cycle Grant on behalf of ten cities within WRCOG’s boundaries. These cities
include: Banning, Beaumont, Canyon Lake, Lake Elsinore, Murrieta, Norco, Perris, Riverside, San
Jacinto and Temecula.
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-12
The objective of the Used Oil Block Grant is to make it convenient for Do-It-Yourselfers (DIYers)
to recycle their used oil and to make it easy for them to find a Certified Center accepting used oil.
In order for these centers to be certified, they need to apply for certification with the California
Integrated Waste Management Board (CIWMB). As a grant recipient, WRCOG contacts non-
certified centers in the jurisdiction to interest them in becoming certified used motor oil collection
center. The goal is to see a significant decrease in the amount of illegally dumped motor oil by
adding more oil collection centers within close proximity to users.
Through the same grant funding source, WRCOG also provides used oil containers for distribution
to DIYers who need proper containers for automotive fluids. Through WRCOG efforts, all
certified centers in the County are in compliance to state and local mandates.
The Storm Drain Pollution Prevention Program assists WRCOG’s efforts by making available our
MS4 information and supporting promotionals for distributions to their targeted groups.
At various venues, WRCOG staff obtain participant responses to a ten question survey. The survey
examines the public’s understanding on:
o used oil recycling,
o used oil drop-off locations,
o curbside programs, and other local recycling programs.
The program also maintains an English and Spanish 800 hotline that can be used to get answers to
any recycling question a resident may have regarding, “where the nearest Certified Center is
located?” and “where can I find a used oil container?”. The phone number is printed on all
distributed materials including the oil containers.
Cleanest County in the West Program
Through another grant funding source, WRCOG created the “Cleanest County in the West”
program to address issues relating to litter and illegal dumping. The program was designed to
assist jurisdictions in meeting the 50% diversion goals mandated by Assembly Bill 939. AB 939
was a state mandate signed in 1989 that required cities to reduce their waste by 50% by the Year
2000.
The core of the program is the elementary school assembly. WRCOG partners with Radio Disney
AM 1290 to present an interactive and informational presentation for children in grades K-6th. This
program continually reinforces the responsibility of everyone to recycle and pick up litter.
WRCOG at the end of the assembly gives the school two recycling containers for the collection of
cans and bottles. During the 06/07 school year, over 18,000 students and 600 teachers have
experienced the assembly. Each student receives an environmental activity book and an
application to join the Riverside County Kids Recycle Club where they will receive a quarterly
newspaper. This club has over 200 members.
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-13
Like the “Only Rain Down the Storm Drain” Program which promotes litter reduction and
recycling throughout the Santa Ana Region, WRCOG also participates in events to promote litter
reduction and beverage container recycling. These events gives staff an opportunity to assess how
informed the local community is regarding recycling and also allows us to distribute brochures and
informational flyers that will assist people in finding the nearest recycling center. During these
events promotional items made from recycled content are also given out to show examples on how
used items such as money can be recycled into new things such as a pencil, a promotional product
first used by the “Only Rain Down the Storm Drain” Program. This particular promotional item
especially increases the interest of the people visiting out booth and demonstrates how almost
anything can be recycled and reused.
Outreach tools specific to Business Specific
The “Only Rain Down the Storm Drain” Program conducts a wide range of outreach activities to
businesses; informing them of how their “everyday activities” may contribute to the pollution of
Receiving Waters, and encouraging them to adopt alternatives that will lessen or eliminate
polluting-causing activities. Program efforts include providing information on pollution prevention
techniques and informing businesses about the proper disposal of wastes. Public education
materials and media emphasize the theme that all businesses have a role to play in reducing and
preventing the polluting of Receiving waters. The goal is to present a clear and consistent message
that explains the simple connections between a business’ everyday activities and their impacts
upon Receiving Water quality.
Originally, the business education program mainly consisted of the development and distribution of
formal BMP guidance and outreach to business associations. The program has now expanded to
include direct outreach to businesses through classroom formats, advertising in business trade
papers and providing exhibits at various business specific symposiums.
Discussion of the current Business Specific Outreach tools implemented by the Permittees are
discussed below.
Direct Business Outreach Activities
The “Only Rain Down the Storm Drain” Program partners with various entities to provide training
and education. Currently, the District has allowed AEI-CASC Engineering, a consultant who
provides the Permittees internal education programs to train developers and consultants regarding
the new WQMP/SUSMP requirements for Riverside County. The District has partnered with
Riverside/Corona Resource Conservation District, to develop a Water Quality Design class that
focuses on sub-regional solutions and low impact development. This class was offered for the first
time through UCR extension in October 2005. Additionally, the District presented at Construction
Storm Water Compliance Workshop hosted by the Building Industry Association of Southern
California (BIA/SC) on March 22, 2006. The workshop focused on state and municipal
construction requirements for contractors, developers, and consultants.
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-14
Through the Compliance Assistance Program (CAP), a partnership with County Environmental
Health restaurants and businesses that handle hazardous wastes are reviewed for potential storm
water impacts from their activities. Each business is provided with storm drain pollution
prevention public education outreach information specific to their activities.
Steve Groner Associates has been retained to prepare and present workshops at major home
improvement stores throughout Riverside County. The workshops include a handout educating the
store’s employees about storm water impacts that could occur from improper application of paint,
pesticides or fertilizers. Attendees at the workshop also receive “Only Rain Down the Storm
Drain” information and promotionals to help highlight the storm water protection message.
Employees are then able to share with customers the proper use and disposal of products that are
potential storm drain pollutants. Point of purchase displays, tearsheets, and counter displays have
been installed at strategic locations to educate the public directly.
Each new business trade in Riverside County that is listed in the Inland Business Press newspaper
is provided with an “Only Rain Down the Storm Drain” Pollution Prevention packet.
Brochures
Commercial: After the Storm; Food Facilities; Outdoor Cleaning Activities and Non-Point Source
Discharges; Automotive Maintenance & Car Care. Note: (Staff is revising the Outdoor Activity
brochure to include broader examples of urban pollution causing activities such as, power washers
and mobile vehicle maintenance operators).
Industrial: After the Storm; Outdoor Cleaning Activities and Non-Point Source Discharges; and
Your Facility May Need a Storm Water Permit.
Construction: After the Storm; Outdoor Cleaning Activities and Non-Point Source Discharges;
General Construction & Site Supervision The revision to the construction brochure is pending the
finalization of the construction permit.
Posters
BMP posters for automotive, food service establishments (available in Spanish) and construction
employees are available. The posters address activities associated with the automotive repair
industry, and the food/restaurant industry that may pose a threat to water quality. There are also
two new posters for the Fueling Stations and Service Bay Service centers. All the posters
recommend storm water BMPs and are designed to serve as informative and attractive visual
reminders for employees.
Media Outreach
In March, 07, a full-page ad was placed in the Inland Business Press newspaper to draw the
attention of Inland Empire businesses whose urban runoff activities might be threatening local
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-15
water quality. The ad also provided links to the District’s and CASQA’s website for more detailed
BMP information.
Supplemental Environmental Projects (SEP)
In an effort to change the behaviors of large storm drain pollution prevention offenders in the
County, Environmental Health established a Supplemental Environmental Project (S.E.P.). The
S.E.P. requires from the violator a monetary fine and/or the violator’s cooperation for the
development of a public education tool on the effects of polluted urban run off. S.E.P.’s to date
include:
• A Downs Energy SEP project resulted in the development of a billboard ad that has been
greeting commuters traveling Westbound on the 60 Freeway lanes.
Outreach tools specific to Pollutants
“Only Rain Down the Storm Drain” Pollution Prevention Program conducts a wide range of
outreach activities focusing on reduction of certain pollutants in the receiving waters. These
outreach activities focus on sources of those pollutants whether it is residential, business, municipal
or some other state or federal source. Education materials explain how “everyday activities” of
potential sources may contribute to the pollution of receiving waters, and encourage the sources to
adopt alternative approaches to pollutant management that will lessen or eliminate polluting-
causing activities. Program efforts include providing information on pollution prevention
techniques and informing sources about the proper disposal of pollutants. Public education
materials and media emphasize the theme that all citizens/businesses have a role to play in
reducing and preventing the polluting of receiving waters. The goal is to present a clear and
consistent message that explains the simple connections between a business’ everyday activities
and their impacts upon receiving water quality.
Each subsection that follows identifies how existing outreach materials previously described
address specific potential pollutant sources in the watershed.
Use of pesticides, fertilizers, and herbicides
A. The Riverside County Agricultural Commissioner's Pesticide Applicator's License renewal
information package includes materials on the proper use of pesticides and offers
information on training workshops. The license renewal process requires continuing
education of applicants and detailed record keeping of pesticide applications. Municipal
employees that are responsible for the application of pesticides are encouraged to obtain
and maintain credentials as Certified Applicators and/or licensed Pest Control Advisors.
B. The "Home Garden Care” materials are being revised to draw and attract the interest of the
general public and amateur gardener. The new materials will include Integrated Pest
Management and plant selection and materials from the State Water Resource Control
Board, Central Contra Costa IPM Outreach Program, University of California and The
PROGRAM IMPLEMENTATION
Program Implementation
Section 10 – Public Education and Outreach Page 10-16
Orange County Storm Water Program are being used. All the materials selected offer
alternatives to using chemically based pesticides, herbicides and fertilizers.
C. The "Keep Our Water Clean" video covers proper use of pesticides, fertilizers and
herbicides as well as excess runoff from sprinklers.
D. The September annual “Only Rain Down The Storm Drain’s” participation in the National
Pollution Prevention Week insert informs residents about the problem of storm water
pollution and provides simple pollution prevention activities in gardening.
E. The “Only Rain Down The Storm Drain” adult presentations conducted by RCRCD
discusses the effects of pesticides and fertilizers on local waterways. The materials
distributed following the presentation promote alternatives to pesticide use in the yard and
garden.
F. The 2006 Environmental Calendar included a wide array of storm water protection
information. It is designed to attract the adult audience by listing best management
practices, scheduled special events, household hazardous waste collection sites, used oil
collection sites, composting workshops, citywide clean ups, and each of the watersheds
along with geographical information. Throughout the calendar the main message is “Only
Rain Down The Storm Drain” and the hotline number to call for additional home garden
care information.
G. Steve Groner Associates has been retained to prepare and present employee workshops at
major home improvement stores throughout Riverside County. This information is then
passed on to the public via the shelf talkers accessible to the public or when an employee is
addressed with a question. The workshops include information on BMPs the public should
be aware of for pesticide and fertilizer application, use, and storage.
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
Appendix E
Soils Report
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
Appendix F
Site Design BMP Sizing and Hydrologic Data
TRACT MAP NO. 37639 – DSRT SURF
PRELIMINARY HYDROLOGY REPORT
TABLE OF CONTENTS:
I PURPOSE AND SCOPE
II DESIGN METHODOLOGY
III DESIGN FLOWRATES – RATIONAL METHOD
IV STORM DRAIN SYSTEM SIZING CALCULATIONS
V APPENDIX - REFERENCE MATERIAL
I. PURPOSE AND SCOPE
The Preliminary Hydrology Report is prepared in support of the Tentative Tract Map and
Preliminary WQMP submittal for the DSRT Surf Resort project. This report provides a
discussion of the preliminary drainage design strategy based on the Runoff Management
Plan prepared by Mainiero, Smith and Associates, Inc. (February 12, 1997) for the
existing adjacent South Golf Course within Desert Willow Resort.
The DSRT Surf project is proposed to be built on a vacant 17.8 acre parcel within the
existing Desert Willow Resort in Palm Desert, CA. The vacant pad is located west of
existing Desert Willow Drive, near the roundabout and drop off area serving the existing
clubhouse facilities. In general, Desert Willow is bounded by Cook Street and adjacent
residential/commercial development to the east; Portola Avenue to the west; Country
Club Drive to the south; and Frank Sinatra Drive to the north. Access to the DSRT Surf
project will be located south of the existing clubhouse with access off the Desert Willow
Drive Roundabout. DSRT Surf will be constructed with a 6.1 acre surf lagoon located in
the center of the development with two-three story hotels and several residential villas
located around the perimeter. The DSRT Surf development will disturb all of the vacant
parcel on which it is to be constructed.
The South Golf Course Runoff Management Plan provides details quantifying the
retention capacity of South Golf Course concluding that “The retention areas provided
within the golf course fairways provide adequate capacity for the 100 year runoff from all
drainage areas”. The South Golf Course Runoff Management Plan also includes a
Hydrology Map (Section V – Appendix) illustrating the location of areas within the golf
course designated for the collection of storm runoff. Under both existing and developed
conditions, storm drain runoff generated on-site is designed to be conveyed to the
adjacent South Golf Course via an underground storm drain piping system in a similar
manner to the systems employed by existing adjacent resort developments. The
Hydrology Site Plan included in the Appendix of this report shows the preliminary
location of three main underground systems designed to outlet on-site runoff to the
adjacent golf course in a manner consistent with the existing South Golf Course Runoff
Management Plan. In terms of Water Quality Management Plan terms, the 6.1 acre Surf
Lagoon will act as a “self-treating area” since no rainfall tributary to the Lagoon will
result in runoff. Instead, the proposed Surf Lagoon is designed to be evacuated frequently
via a 16 inch gravity flow pipe that will convey water stored in the Lagoon to a South
Golf Course lake within Desert Willow Resort.
II. DESIGN METHODOLOGY AND CALCULATIONS
This report includes:
1) A description of the drainage strategy for the DSRT Surf project based on the Desert
Willow South Golf Course Runoff Management Plan
2) A definition of on-site drainage subareas contributing runoff to three separate
South Golf Course drainage collection areas.
3) Calculations estimating the anticipated design flowrates generated within each
subarea.
4) Preliminary level pipe sizing calculations in support of the Preliminary Grading and
Utility Design.
DESIGN CRITERIA
The following parameters were used in the preparation of the analyses:
Antecedant Moisture Condition – 100 year 2
100 year – 1 hour Precipitation 1.67” NOAA Atlas 14
2 year – 1 hour Precipitation 0.375” NOAA Atlas 14
Hydrologic Soil Type “A” RCFCD Plate C-1.36
Slope Intensity Duration Curve 0.58
III DESIGN FLOWRATES – RATIONAL METHOID
SUBAREA 1 (4.9 AC) – 19.6 CFS
SUBAREA 2 (2.06 AC) – 7.9 CFS
SUBAREA 3 (2.4 AC) – 8.3 CFS
SUBAREA 4 (1.13 AC) – 5.0 CFS
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989 - 2005 Version
7.1
Rational Hydrology Study Date: 12/07/18
File:SUBAREA1.out
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SUBAREA 1 - 100 YEAR STORM EVENT
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********* Hydrology Study Control Information **********
English (in-lb) Units used in input data file
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Program License Serial Number 6253
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Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District
1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 2
2 year, 1 hour precipitation = 0.375(In.)
100 year, 1 hour precipitation = 1.670(In.)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.670(In/Hr)
Slope of intensity duration curve = 0.5800
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++
Process from Point/Station 100.000 to Point/Station
101.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________
____
Initial area flow distance = 690.000(Ft.)
Top (of initial area) elevation = 271.500(Ft.)
Bottom (of initial area) elevation = 265.000(Ft.)
Difference in elevation = 6.500(Ft.)
Slope = 0.00942 s(percent)= 0.94
TC = k(0.300)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 10.420 min.
Rainfall intensity = 4.610(In/Hr) for a 100.0 year storm
COMMERCIAL subarea type
Runoff Coefficient = 0.866
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 2) = 32.00
Pervious area fraction = 0.100; Impervious fraction = 0.900
Initial subarea runoff = 19.556(CFS)
Total initial stream area = 4.900(Ac.)
Pervious area fraction = 0.100
End of computations, total study area = 4.90 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area fraction(Ap) = 0.100
Area averaged RI index number = 32.0
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989 - 2005 Version
7.1
Rational Hydrology Study Date: 12/07/18
File:SUBAREA2.out
------------------------------------------------------------------
------
SUBAREA 2 - 100 YEAR STORM EVENT
------------------------------------------------------------------
------
********* Hydrology Study Control Information **********
English (in-lb) Units used in input data file
------------------------------------------------------------------
------
Program License Serial Number 6253
------------------------------------------------------------------
------
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District
1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 2
2 year, 1 hour precipitation = 0.375(In.)
100 year, 1 hour precipitation = 1.670(In.)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.670(In/Hr)
Slope of intensity duration curve = 0.5800
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++
Process from Point/Station 200.000 to Point/Station
202.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________
____
Initial area flow distance = 710.000(Ft.)
Top (of initial area) elevation = 268.000(Ft.)
Bottom (of initial area) elevation = 263.000(Ft.)
Difference in elevation = 5.000(Ft.)
Slope = 0.00704 s(percent)= 0.70
TC = k(0.300)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 11.171 min.
Rainfall intensity = 4.427(In/Hr) for a 100.0 year storm
COMMERCIAL subarea type
Runoff Coefficient = 0.865
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 2) = 32.00
Pervious area fraction = 0.100; Impervious fraction = 0.900
Initial subarea runoff = 7.888(CFS)
Total initial stream area = 2.060(Ac.)
Pervious area fraction = 0.100
End of computations, total study area = 2.06 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area fraction(Ap) = 0.100
Area averaged RI index number = 32.0
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989 - 2005 Version
7.1
Rational Hydrology Study Date: 12/07/18
File:SUBAREA3.out
------------------------------------------------------------------
------
SUBAREA 3 - 100 YEAR STORM EVENT
------------------------------------------------------------------
------
********* Hydrology Study Control Information **********
English (in-lb) Units used in input data file
------------------------------------------------------------------
------
Program License Serial Number 6253
------------------------------------------------------------------
------
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District
1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 2
2 year, 1 hour precipitation = 0.375(In.)
100 year, 1 hour precipitation = 1.670(In.)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.670(In/Hr)
Slope of intensity duration curve = 0.5800
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++
Process from Point/Station 300.000 to Point/Station
303.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________
____
Initial area flow distance = 1000.000(Ft.)
Top (of initial area) elevation = 272.000(Ft.)
Bottom (of initial area) elevation = 266.000(Ft.)
Difference in elevation = 6.000(Ft.)
Slope = 0.00600 s(percent)= 0.60
TC = k(0.300)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 13.228 min.
Rainfall intensity = 4.014(In/Hr) for a 100.0 year storm
COMMERCIAL subarea type
Runoff Coefficient = 0.863
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 2) = 32.00
Pervious area fraction = 0.100; Impervious fraction = 0.900
Initial subarea runoff = 8.312(CFS)
Total initial stream area = 2.400(Ac.)
Pervious area fraction = 0.100
End of computations, total study area = 2.40 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area fraction(Ap) = 0.100
Area averaged RI index number = 32.0
Riverside County Rational Hydrology Program
CIVILCADD/CIVILDESIGN Engineering Software,(c) 1989 - 2005 Version
7.1
Rational Hydrology Study Date: 12/07/18
File:SUBAREA4.out
------------------------------------------------------------------
------
SUBAREA 4 - 100 YEAR STORM EVENT
------------------------------------------------------------------
------
********* Hydrology Study Control Information **********
English (in-lb) Units used in input data file
------------------------------------------------------------------
------
Program License Serial Number 6253
------------------------------------------------------------------
------
Rational Method Hydrology Program based on
Riverside County Flood Control & Water Conservation District
1978 hydrology manual
Storm event (year) = 100.00 Antecedent Moisture Condition = 2
2 year, 1 hour precipitation = 0.375(In.)
100 year, 1 hour precipitation = 1.670(In.)
Storm event year = 100.0
Calculated rainfall intensity data:
1 hour intensity = 1.670(In/Hr)
Slope of intensity duration curve = 0.5800
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++
Process from Point/Station 400.000 to Point/Station
404.000
**** INITIAL AREA EVALUATION ****
__________________________________________________________________
____
Initial area flow distance = 310.000(Ft.)
Top (of initial area) elevation = 272.000(Ft.)
Bottom (of initial area) elevation = 270.500(Ft.)
Difference in elevation = 1.500(Ft.)
Slope = 0.00484 s(percent)= 0.48
TC = k(0.300)*[(length^3)/(elevation change)]^0.2
Initial area time of concentration = 8.644 min.
Rainfall intensity = 5.137(In/Hr) for a 100.0 year storm
COMMERCIAL subarea type
Runoff Coefficient = 0.868
Decimal fraction soil group A = 1.000
Decimal fraction soil group B = 0.000
Decimal fraction soil group C = 0.000
Decimal fraction soil group D = 0.000
RI index for soil(AMC 2) = 32.00
Pervious area fraction = 0.100; Impervious fraction = 0.900
Initial subarea runoff = 5.039(CFS)
Total initial stream area = 1.130(Ac.)
Pervious area fraction = 0.100
End of computations, total study area = 1.13 (Ac.)
The following figures may
be used for a unit hydrograph study of the same area.
Area averaged pervious area fraction(Ap) = 0.100
Area averaged RI index number = 32.0
IV STORM DRAIN SYSTEM SIZING CALCULATIONS
tmp#8.txt
Manning Pipe Calculator
Given Input Data:
Shape ........................... Circular
Solving for ..................... Depth of Flow
Diameter ........................ 24.0000 in
Flowrate ........................ 19.6000 cfs
Slope ........................... 0.0200 ft/ft
Manning's n ..................... 0.0130
Computed Results:
Depth ........................... 13.5745 in
Area ............................ 3.1416 ft2
Wetted Area ..................... 1.8325 ft2
Wetted Perimeter ................ 40.8572 in
Perimeter ....................... 75.3982 in
Velocity ........................ 10.6960 fps
Hydraulic Radius ................ 6.4584 in
Percent Full .................... 56.5605 %
Full flow Flowrate .............. 31.9929 cfs
Full flow velocity .............. 10.1837 fps
Critical Information
Critical depth .................. 19.0926 in
Critical slope .................. 0.0062 ft/ft
Critical velocity ............... 7.1198 fps
Critical area ................... 2.7529 ft2
Critical perimeter .............. 51.8843 in
Critical hydraulic radius ....... 7.6404 in
Critical top width .............. 24.0000 in
Specific energy ................. 2.9093 ft
Minimum energy .................. 2.3866 ft
Froude number ................... 1.9707
Flow condition .................. Supercritical
Page 1
SUBAREA 1 - 24IN PIPE
tmp#9.txt
Manning Pipe Calculator
Given Input Data:
Shape ........................... Circular
Solving for ..................... Depth of Flow
Diameter ........................ 24.0000 in
Flowrate ........................ 7.9000 cfs
Slope ........................... 0.0050 ft/ft
Manning's n ..................... 0.0130
Computed Results:
Depth ........................... 11.9131 in
Area ............................ 3.1416 ft2
Wetted Area ..................... 1.5563 ft2
Wetted Perimeter ................ 37.5253 in
Perimeter ....................... 75.3982 in
Velocity ........................ 5.0761 fps
Hydraulic Radius ................ 5.9722 in
Percent Full .................... 49.6379 %
Full flow Flowrate .............. 15.9965 cfs
Full flow velocity .............. 5.0918 fps
Critical Information
Critical depth .................. 12.0005 in
Critical slope .................. 0.0049 ft/ft
Critical velocity ............... 5.0290 fps
Critical area ................... 1.5709 ft2
Critical perimeter .............. 37.7001 in
Critical hydraulic radius ....... 6.0002 in
Critical top width .............. 24.0000 in
Specific energy ................. 1.3932 ft
Minimum energy .................. 1.5001 ft
Froude number ................... 1.0145
Flow condition .................. Supercritical
Page 1
SUBAREA 2 - 24IN PIPE
tmp#10.txt
Manning Pipe Calculator
Given Input Data:
Shape ........................... Circular
Solving for ..................... Depth of Flow
Diameter ........................ 24.0000 in
Flowrate ........................ 8.3000 cfs
Slope ........................... 0.0050 ft/ft
Manning's n ..................... 0.0130
Computed Results:
Depth ........................... 12.2660 in
Area ............................ 3.1416 ft2
Wetted Area ..................... 1.6151 ft2
Wetted Perimeter ................ 38.2311 in
Perimeter ....................... 75.3982 in
Velocity ........................ 5.1389 fps
Hydraulic Radius ................ 6.0835 in
Percent Full .................... 51.1082 %
Full flow Flowrate .............. 15.9965 cfs
Full flow velocity .............. 5.0918 fps
Critical Information
Critical depth .................. 12.3149 in
Critical slope .................. 0.0049 ft/ft
Critical velocity ............... 5.1131 fps
Critical area ................... 1.6233 ft2
Critical perimeter .............. 38.3290 in
Critical hydraulic radius ....... 6.0986 in
Critical top width .............. 24.0000 in
Specific energy ................. 1.4326 ft
Minimum energy .................. 1.5394 ft
Froude number ................... 1.0082
Flow condition .................. Supercritical
Page 1
SUBAREA 3 - 24IN PIPE
tmp#11.txt
Manning Pipe Calculator
Given Input Data:
Shape ........................... Circular
Solving for ..................... Depth of Flow
Diameter ........................ 18.0000 in
Flowrate ........................ 5.0000 cfs
Slope ........................... 0.0050 ft/ft
Manning's n ..................... 0.0130
Computed Results:
Depth ........................... 10.8138 in
Area ............................ 1.7671 ft2
Wetted Area ..................... 1.1088 ft2
Wetted Perimeter ................ 31.9270 in
Perimeter ....................... 56.5487 in
Velocity ........................ 4.5096 fps
Hydraulic Radius ................ 5.0008 in
Percent Full .................... 60.0768 %
Full flow Flowrate .............. 7.4277 cfs
Full flow velocity .............. 4.2032 fps
Critical Information
Critical depth .................. 10.3225 in
Critical slope .................. 0.0057 ft/ft
Critical velocity ............... 4.7670 fps
Critical area ................... 1.0489 ft2
Critical perimeter .............. 30.9192 in
Critical hydraulic radius ....... 4.8849 in
Critical top width .............. 18.0000 in
Specific energy ................. 1.2161 ft
Minimum energy .................. 1.2903 ft
Froude number ................... 0.9258
Flow condition .................. Subcritical
Page 1
SUBAREA 4 - 18IN PIPE
Calculations are provided in this section of the Preliminary Hydrology Report based on
the design peak flowrates for each of four subareas within the DSRT Surf project and the
anticipated outlet pipe sizes conveying collected flows to the off-site Golf Course
drainage basins using Manning’s Equation for conduits flowing partially full.. These
preliminary results show that subareas 1-3 can easily convey peak design flowrates in a
24inch conduit flowing partially full and subarea 4 can easily convey peak design
flowrates in an 18inch conduit flowing partially full.
V APPENDIX – REFERENCE MATERIAL
NOAA Atlas 14, Volume 6, Version 2
Location name: Palm Desert, California, USA*
Latitude: 33.7651°, Longitude: -116.3667°
Elevation: 267.49 ft**
* source: ESRI Maps
** source: USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
Sanja Perica, Sarah Dietz, Sarah Heim, Lillian Hiner, Kazungu Maitaria, Deborah Martin, Sandra Pavlovic,
Ishani Roy, Carl Trypaluk, Dale Unruh, Fenglin Yan, Michael Yekta, Tan Zhao, Geoffrey Bonnin, Daniel
Brewer, Li-Chuan Chen, Tye Parzybok, John Yarchoan
NOAA, National Weather Service, Silver Spring, Maryland
PF_tabular | PF_graphical | Maps_&_aerials
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1
Duration Average recurrence interval (years)
1 2 5 10 25 50 100 200 500 1000
5-min 0.064
(0.053‑0.078)
0.099
(0.082‑0.120)
0.153
(0.127‑0.186)
0.203
(0.167‑0.249)
0.283
(0.225‑0.359)
0.355
(0.277‑0.460)
0.439
(0.334‑0.584)
0.538
(0.397‑0.736)
0.698
(0.494‑0.997)
0.879
(0.600‑1.30)
10-min 0.092
(0.077‑0.111)
0.142
(0.118‑0.172)
0.219
(0.182‑0.266)
0.291
(0.239‑0.357)
0.406
(0.323‑0.515)
0.509
(0.396‑0.660)
0.629
(0.478‑0.837)
0.771
(0.570‑1.06)
1.00
(0.708‑1.43)
1.26
(0.860‑1.86)
15-min 0.111
(0.093‑0.134)
0.172
(0.143‑0.208)
0.265
(0.220‑0.322)
0.352
(0.290‑0.431)
0.491
(0.390‑0.623)
0.615
(0.479‑0.798)
0.761
(0.578‑1.01)
0.933
(0.689‑1.28)
1.21
(0.856‑1.73)
1.52
(1.04‑2.25)
30-min 0.170
(0.141‑0.205)
0.262
(0.218‑0.318)
0.404
(0.336‑0.492)
0.537
(0.442‑0.659)
0.749
(0.596‑0.951)
0.940
(0.732‑1.22)
1.16
(0.883‑1.55)
1.43
(1.05‑1.95)
1.85
(1.31‑2.64)
2.33
(1.59‑3.44)
60-min 0.243
(0.202‑0.294)
0.375
(0.313‑0.455)
0.579
(0.481‑0.704)
0.769
(0.633‑0.944)
1.07
(0.854‑1.36)
1.35
(1.05‑1.75)
1.67
(1.26‑2.21)
2.04
(1.51‑2.79)
2.65
(1.87‑3.78)
3.33
(2.28‑4.93)
2-hr 0.340
(0.284‑0.412)
0.511
(0.426‑0.620)
0.768
(0.638‑0.935)
1.00
(0.827‑1.23)
1.37
(1.09‑1.74)
1.69
(1.32‑2.19)
2.05
(1.56‑2.73)
2.47
(1.82‑3.37)
3.11
(2.20‑4.43)
3.69
(2.52‑5.45)
3-hr 0.407
(0.339‑0.493)
0.607
(0.505‑0.736)
0.903
(0.750‑1.10)
1.17
(0.965‑1.44)
1.58
(1.26‑2.01)
1.94
(1.51‑2.52)
2.34
(1.78‑3.11)
2.80
(2.06‑3.83)
3.49
(2.47‑4.98)
4.10
(2.80‑6.06)
6-hr 0.543
(0.452‑0.657)
0.806
(0.671‑0.977)
1.19
(0.988‑1.45)
1.54
(1.26‑1.88)
2.06
(1.64‑2.61)
2.50
(1.95‑3.25)
3.00
(2.28‑3.99)
3.56
(2.63‑4.86)
4.39
(3.11‑6.27)
5.12
(3.49‑7.56)
12-hr 0.650
(0.542‑0.788)
0.982
(0.818‑1.19)
1.46
(1.22‑1.78)
1.89
(1.56‑2.32)
2.54
(2.02‑3.22)
3.09
(2.41‑4.01)
3.70
(2.81‑4.92)
4.38
(3.24‑6.00)
5.41
(3.83‑7.72)
6.28
(4.29‑9.29)
24-hr 0.771
(0.682‑0.889)
1.19
(1.05‑1.37)
1.80
(1.58‑2.08)
2.34
(2.04‑2.73)
3.14
(2.66‑3.79)
3.83
(3.18‑4.71)
4.59
(3.72‑5.77)
5.44
(4.29‑7.03)
6.71
(5.09‑9.03)
7.80
(5.72‑10.8)
2-day 0.864
(0.765‑0.996)
1.35
(1.19‑1.56)
2.05
(1.81‑2.37)
2.67
(2.34‑3.12)
3.59
(3.04‑4.33)
4.37
(3.63‑5.37)
5.22
(4.23‑6.57)
6.17
(4.87‑7.98)
7.58
(5.75‑10.2)
8.78
(6.44‑12.2)
3-day 0.913
(0.808‑1.05)
1.43
(1.27‑1.65)
2.18
(1.93‑2.53)
2.85
(2.49‑3.32)
3.83
(3.24‑4.61)
4.66
(3.87‑5.72)
5.56
(4.51‑7.00)
6.57
(5.19‑8.49)
8.07
(6.12‑10.9)
9.34
(6.85‑13.0)
4-day 0.951
(0.842‑1.10)
1.50
(1.32‑1.73)
2.29
(2.02‑2.65)
2.98
(2.61‑3.48)
4.01
(3.40‑4.83)
4.88
(4.05‑5.99)
5.83
(4.72‑7.33)
6.88
(5.43‑8.89)
8.45
(6.40‑11.4)
9.77
(7.17‑13.6)
7-day 1.00
(0.889‑1.16)
1.59
(1.41‑1.84)
2.45
(2.16‑2.83)
3.20
(2.80‑3.73)
4.31
(3.65‑5.19)
5.24
(4.35‑6.44)
6.25
(5.07‑7.87)
7.38
(5.82‑9.54)
9.03
(6.85‑12.2)
10.4
(7.65‑14.5)
10-day 1.04
(0.921‑1.20)
1.66
(1.47‑1.92)
2.56
(2.26‑2.97)
3.36
(2.94‑3.91)
4.53
(3.84‑5.46)
5.51
(4.58‑6.78)
6.58
(5.34‑8.28)
7.76
(6.13‑10.0)
9.50
(7.21‑12.8)
11.0
(8.04‑15.2)
20-day 1.11
(0.981‑1.28)
1.80
(1.59‑2.08)
2.80
(2.47‑3.25)
3.70
(3.23‑4.31)
5.03
(4.26‑6.05)
6.14
(5.10‑7.54)
7.35
(5.96‑9.25)
8.68
(6.85‑11.2)
10.6
(8.06‑14.3)
12.2
(8.98‑17.0)
30-day 1.21
(1.07‑1.39)
1.97
(1.74‑2.28)
3.11
(2.74‑3.59)
4.12
(3.60‑4.80)
5.64
(4.77‑6.79)
6.91
(5.73‑8.49)
8.28
(6.72‑10.4)
9.80
(7.73‑12.7)
12.0
(9.10‑16.1)
13.8
(10.1‑19.2)
45-day 1.29
(1.14‑1.48)
2.13
(1.89‑2.46)
3.39
(2.99‑3.93)
4.53
(3.96‑5.29)
6.25
(5.30‑7.53)
7.71
(6.40‑9.47)
9.28
(7.52‑11.7)
11.0
(8.68‑14.2)
13.5
(10.2‑18.2)
15.6
(11.4‑21.6)
60-day 1.37
(1.21‑1.58)
2.29
(2.03‑2.64)
3.68
(3.24‑4.26)
4.94
(4.32‑5.76)
6.84
(5.80‑8.24)
8.46
(7.03‑10.4)
10.2
(8.30‑12.9)
12.1
(9.59‑15.7)
14.9
(11.3‑20.1)
17.2
(12.6‑24.0)
1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS).
Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates
(for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds
are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values.
Please refer to NOAA Atlas 14 document for more information.
Back to Top
PF graphical
Precipitation Frequency Data Server https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=33.7651&...
1 of 4 12/7/2018, 11:41 AM
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
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
(See Final WQMP)
Infiltration Facility
Inspection and Maintenance Checklist
Property Address: Property Owner:
Treatment Measure No.: Date of Inspection: Type of Inspection: Monthly Pre-Wet Season
After heavy runoff
Inspector(s): End of Wet Season Other:_____________
Defect Conditions When Maintenance Is Needed
Needed?
(Yes/No)
Comments (Describe maintenance
completed and if needed maintenance
was not conducted, note when it will be
done)
Results Expected When Maintenance
Is Performed
1. Standing Water When water stands in the infiltration facility between storms and does not drain within 3
days after rainfall.
There should be no areas of standing water once inflow has ceased. Remove
any sediment, debris or trash blockage
within facility or around inlet.
2. Inlet/Outlet Inlet/outlet areas clogged with sediment or debris, and/or eroded. Material removed and disposed of properly so that there is no clogging or blockage in the inlet and outlet areas. Remove blockage and overflow (if any) is restored to design condition.
3. Miscellaneous Any condition not covered above that needs attention in order for the infiltration facility to function as designed.
Meet the design specifications.
Infiltration Facility Maintenance Plan
for
Routine Maintenance Activities
The principal maintenance objective is to prevent sediment buildup and clogging, which
reduces pollutant removal efficiency and may lead to facility failure. Routine maintenance
activities, and the frequency at which they will be conducted, are shown in Table 1. All
facilities shall be operational, per City of Palm Desert requirements, upon removal of the
storm water BMPs and prior to completion of construction.
Table 1
Routine Maintenance Activities for Infiltration Basins
1 Remove obstructions, debris and trash from infiltration
facility and dispose of properly.
Monthly, and as needed after storm
events.
2 Inspect drywell to ensure that it drains between storms,
and within 3 days after rainfall.
Monthly during wet season, and as
needed after storm events.
3 Remove any trash, grass clippings, vegetation and other
debris from the parking lot and upstream of the drywell
and inlet.
As needed. Parking lot sweeping at
a minimum as per frequency required
by City of Palm Desert Street
Sweeping ordinance(s).
4 Inspect infiltration facility using the inspection checklist. Monthly, and after storm events 1” or
greater, and after removal of
accumulated debris or material.
5 Walk the project site and inspect buildings, landscape
areas, irrigation systems, trash enclosures and other
areas upstream of the infiltration facility which could
impact the operation of the facility if not properly
maintained.
Monthly, and as needed after storm
events.
Mosquito Abatement
Standing water shall not remain in the treatment measures for more than five days, to
prevent mosquito generation.
Inspections
The Infiltration Facility Inspection and Maintenance Checklist provided shall be used to
conduct inspections monthly (and as needed), identify needed maintenance, and record
maintenance that is conducted.
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
Appendix H
Phase 1 Environmental Site Assessment – Summary of Site
Remediation Conducted and Use Restrictions
(not applicable)
Whitewater River Region Preliminary WQMP
Tentative Map 37369 – DSRT SURF
Appendix I
Project-Specific WQMP Summary Data Form
Project-Specific WQMP Summary Data Form
Applicant Information
Name and Title Doug Sheres – Managing Member
Company Desert Wave Ventures, LLC
Phone
Email Doug@Paramocap.com
Project Information
Project Name
(as shown on project application/project -specific WQMP) DSRT SURF
Street Address
Nearest Cross Streets Desert Willow Drive at Country Club Drive
Municipality
(City or Unincorporated County) Palm Desert
Zip Code 92260
Tract Number(s) and/or Assessor Parcel Number(s) 620-420-024, 620-420-023, 620-400-008
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 hillside residence; impervious area ≥ 10,000 sq. ft.; Slope ≥ 10% & erosive soils
X Commercial or Industrial ≥ 100,000 sq. ft.
Automotive repair shop
Retail Gasoline Outlet disturbing > 5,000 sq. ft.
Restaurant disturbing > 5,000 sq. ft.
Home subdivision ≥ 10 housing units
Parking lot ≥ 5,000 sq. ft. or ≥ 25 parking spaces
Date Project-Specific PWQMP Submitted To be Submitted 12/14/2018
Size of Project Area (nearest 0.1 acre) 17.8 acres
Project Area managed with Site Design or Low
Impact Development (LID) BMPs (nearest 0.1 acre) 17.8 acres
Is the project subject to onsite retention by
ordinance or policy? Yes
Are Treatment Control BMPs required? Yes
Name of the entity that will implement, operate, and
maintain the post-construction BMPs City of Palm
Contact Name
Street or Mailing Address
City
Zip Code
Phone
Space Below for Use by City/County Staff Only
Preceding Information Verified by
(consistent with information in project-specific WQMP)
Name:
Date:
Date Project-Specific WQMP Approved:
Data Entered by Name:
Date:
Other Comments