HomeMy WebLinkAboutParcel Map 23496 Parcel G,H,L WQMP DCH HondaWater Quality Management Plan (WQMP)
DCH Honda -Parcel Map 23496
1 Parcels G, H, & I of LLA No. 03-0658
1 Project Specific
1 Water Quality Management Plan
1
1 For:
DCH Honda
Parcel Map 23496
1 Parcels G. H, & I of LLA No. 03-0658
1
0326
1 DESIGN REVIEW # PA -06-0293
1
1 Prepared by:
RBF Consulting
40810 County Center Drive, Suite 100
1 Temecula, CA 92591
William D Keller PE, Senior Project Manager
Joseph Daniel Hales EIT
Phone: (951) 506-2089
1 Fax: (951) 676-7240
1 WQMP Preparation/Revision Date:
5/10/2007
Job #15101579
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1
Prepared for:
DCH Auto Group
1
26755 Ynez Road
Temecula, CA 92591
1
Gary Sorter, Regional Vice President
Phone(951)699-3331x-2220
Fax: (951) 491-2397
1
1 Prepared by:
RBF Consulting
40810 County Center Drive, Suite 100
1 Temecula, CA 92591
William D Keller PE, Senior Project Manager
Joseph Daniel Hales EIT
Phone: (951) 506-2089
1 Fax: (951) 676-7240
1 WQMP Preparation/Revision Date:
5/10/2007
Job #15101579
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Water Quality Management Plan (WQMP)
DCH Honda -Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0655
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ENGINEER'S CERTIFICATION
" I certify under penalty of law that this document and all attachments and appendices were prepared
under my direction or supervision in accordance with a system designed to ensure that qualified
personnel properly gather and evaluate the information submitted"
Signature Date
No. C 44341 ] S
Ev.6.30.07 /�
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Water Quality Management Plan (WQMP)
DCII llonda-Parcel Map 2496
Parcels G, 11, & 1 of LLA No. 03-0658
OWNER'S CERTIFICATION
This project -specific Water Quality Management Plan (WQMP) has been prepared for:
DCH Auto Group, by RBF Consulting for the project known as PM 23496, Parcels G,H, & I of LLA
No. 03-0658 (DCI -I Honda), located in the City of Temecula, Riverside County, California. This
WQMP is intended to comply with the requirements of Riverside County for DCI -I Honda, which
includes the requirement 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 or project office in perpetuity.
The undersigned is authorized to certify and to approve implementation of this WQMP. The
undersigned is aware that implementation of this WQMP is enforceable under the City Of Temecula
Water Quality Ordinance (Municipal Code Section 8.28.500). If the undersigned transfers its interest
in the subject property/project, its successor in interest the undersigned shall notify the successor in
interest of its responsibility to implement this WQMP.
"I certify under of law that the provision of this WQMP have been reviewed and accepted and
that the W w' be nsferred to future successors in interest."
Owner's Signa6e Date p t
c x,j q. A
Owner's Prirr4 Name Owner's'title/Position
Gary Sorter, Regional Vice President
DCH Auto Group
26755 Ynez Road
Temecula, CA 92591
Phone(951)669-3331x-2220
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' CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT
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State of California
K It .)qA Sly
County of d . ss.
On Jute- � 6Q before me,�hFex a\C�CIU %+N_\ -I i kC�
UIr — NAlia ara rile of OXeeT(e... -Jana Doe. Note, W-)
personally appeared
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V011111. fthw OciT9, Z
❑ personally known to me
V proved to me on the basis of satisfactory
evidence
to be the person* whose name( is/*�e
subscribed to the within instrument and
acknowledged to me that he/ke/they executed
the same in his/*/tviir authorized
capacity(i ), and that by his/h*r/fl)a1r
signatureOon the instrument the person(, or
the entity upon behalf of which the person('
acted, executed the instrument.
WITNESS my had d official seal.
Slg ure of olary m
OPTIONAL
Though the information below is not required by law, it may prove valuable to persons relying on the document and could prevent
fraudulent removal and reattachment of this form to another document.
Description of Attached Document
Title or Type of Document:
Document Date: Number of Pages:
Signer(s) Other Than Named Above:
Capacity(ies) Claimed by Signer
Signer's Name:
❑ Individual Top of lhumh here
❑ Corporate Officer —Ttle(s):
❑ Partner — ❑ Limited ❑ General
❑ Attorney -in -Fact
❑ Trustee
❑ Guardian or Conservator
❑ Other:
Signer Is Representing:
1 0 1999 National Notary Association • 9350 Be Soto Ave., PO. Box 2402 • Chalsw ir-In CA 91313£402 • www nationalnolary org
Prod No. 5907 Banda, Call ToII Ftee 1 8008]6-682]
' Water Quality Management Plan (WQMP)
DCH Ronda -Parcel Map 23496
' — Parcels G, H, & I of LLA No. 030658
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Contents
' Section Page
'
I
PROJECT DESCRIPTION
A-1
II
SITE CHARACTERIZATION
A-4
'
III
POLLUTANTS OF CONCERN
A-5
IV
HYDROLOGIC CONDITIONS OF CONCERN
A-7
V
BEST MANAGEMENT PRACTICES
A-8
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V.1 Site Design BMPs
A-8
V.2 Source Control BMPs
A-11
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V.3 Treatment Control BMPs
A-14
VA Equivalent Treatment Control Alternatives
A-17
V.5 Regionally -Based Treatment Control BMPs
A-17
VI
OPERATION AND MAINTENANCE RESPONSIBILITY FOR TREATMENT
CONTROLBMPs
A-18
'
VII
FUNDING
A-21
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APPENDICES
A.
CONDITIONS OF APPROVAL
'
B.
VICINITY MAP AND S ITE PLAN
C.
SUPPORTING DETAIL RELATED TO HYDRAULIC CONDITIONS OF CONCERN (IF APPLICABLE)
D.
EDUCATIONAL MATERIALS
E.
SOILS REPORT (NOT CONDUCTED)
F.
TREATMENT CONTROL BMP SIZING CALCULATIONS AND DESIGN DETAILS
'
G.
AGREEMENTS - CC&Rs, COVENANT AND AGREEMENTS AND/OR OTHER MECHANISMS FOR ENSURING ONGOING
OPERATION, MAINTENANCE, FUNDING AND TRANSFER OF REQUIREMENTS FOR THIS PROJECT -SPECIFIC WQMP
H.
PHASE 1 ENVIRONMENTAL SITE ASSESSMENT - SUMMARY OF SITE REMEDIATION
CONDUCTED AND USE
'
RESTRICTIONS (NOT CONDUCTED)
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Water Quality Management Plan (WQMP)
DCH Honda -Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
I. Project Description
' PM 23496 is located in the City of Temecula, at the northwest corner of Ynez Road and Rancho Way. This
commercial development has an area of 5.1 acres. The vicinity map is included in Appendix B. The post -
construction BMP's listed herein are temporary and will be replaced with new permanent BMP's, accompanied
with a new WQMP, when the site is reconstructed at a future date.
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' LOCATION OF FACILITIES: This project consists primarily of parking areas that will be used for parking
on this auto dealership. A proposed 6,000 sf (0.138acres) area including a sales trailer and a car wash area will
be constructed along with approximately 1.33 acres of typical asphalt parking space. 61% of the site will be
covered with compacted Class II Aggregate for a total of 3.19 acres. There will be a vegetated strip of land
parallel to Ynez Road that is approxiametly 0.27ac. The remaining 0.2 acres includes the area of the two
basins. See Exhibit for location details.
ACTIVITIES AND LOCATION: Typical activities associated with this project consist of parking, delivery
of office items, building and landscaped maintenance, car washing, and foot traffic.
MATERIAL STORAGE: Material storage areas are not proposed for this project.
' DELIVERY AREAS: All deliveries will take place at the entrance to the temporary trailer.
' WASTES GENERATED: Trash and debris, oil and grease, and metals. In addition, there is a potential for
sediment/turbidity, nutrients, oxygen demanding substances and pesticides. The project also is expected to
produce runoff that includes organic compounds, trash & debris, oil & grease and metals. In addition there is
potential for the runoff to include bacteria & viruses
Project Owner: DCH Auto Group
' 26755 Ynez Road
Temecula, CA 92591
Gary Sorter, Regional Vice President
Phone (951)699-3331x-2220
Fax: (951) 491-2397
' WQMP Preparer: RBF Consulting
' 40810 County Center Drive, Suite 100
Temecula, CA 92591
William D Keller PE, Senior Project Manager
Joseph Daniel Hales EIT
'
Phone: (951) 506-2089
Fax: (951) 676-7240
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Water Quality Management Plan (WQMP)
DCH Honda -Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
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Project Site Address:
The Project is located at 26957 Ynez Road
No
State Water Resources Control Board, Clean Water
Act (CWA) section 401 Water Quality Certification
City of Temecula, California
'
Planning Area/
Community Name:
City of Temecula, California
No
APN Number(s):
921730067, 921730068, 921730069
tThomas
Bros. Map:
County of Riverside, Page 958, H5, Year 2006
Yes
Project Watershed:
Santa Margarita River (HA 902)
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Sub -watershed:
Murrieta Creek (Hydrologic Unit Basin No. 902.32)
Project Site Size:
5.23 Acres
'
Standard Industrial Classification (SIC) Code: 5511, 7521
Formation of Home Owners'
Association (HOA) or Property Owners Association (POA): N/A
Additional Permits/Approvals required for the Project
I
AGENCY
Permit required
State Department of Fish and Game, 1601 Streambed
Alteration Agreement
No
State Water Resources Control Board, Clean Water
Act (CWA) section 401 Water Quality Certification
No
US Army Corps of Engineers, CWA section 404 permit
No
US Fish and Wildlife, Endangered Species Act section
7 biological opinion
No
City of Temecula Grading Permit
Yes
City of Temecula Building Permit
Yes
SWRCB General Construction Permit
Yes
' The final Conditions of Approval are currently unavailable. Upon receipt, they will be inserted in
Appendix A.
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Water Quality Management Plan (WQMP)
DCH Honda -Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
Appendix B of this project -specific WQMP shall include:
1. A Vicinity Map identifying the project site and surrounding planning areas in sufficient detail to allow
the project site to be plotted on Co -Permittee base mapping; and
2. A Site Plan for the project, which includes structural BMP's, paved areas, landscaped areas, and
structures.
3. A Receiving Waters Exhibit.
A-1
Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
1 II. Site Characterization
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Project Site Address: 26957 Ynez Road
Temecula, Ca. 92591
Land Use Designation or Zoning: Commercial
Current Property Use: Vacant
Proposed Property Use: Commercial/Parking Lot
Availability of Soils Report: No (Not Conducted)
Phase 1 Site Assessment: No (Not Conducted)
Receiving Waters for Urban Runoff from Site
A-3
303(d) List
Designated Beneficial
Proximity to RARE
Receiving Waters
Impairments
Uses
Beneficial Use
Empire Creek
None
None
300 feet from site
Phosphorus
MUN, AGR, IND,
0.4 miles from site
Murrieta Creek
PROC, GWR,REC1,
(HSA 2.32,252)
REC2 WARM, WILD
Santa Margarita
Phosphorus
MUN, AGR, IND,
2.8 miles from site
River - Upper
REC1, REC2, WARM,
Portion (HSA
COLD, WILD, RARE
2.22, 2.21)
Santa Margarita
None
MUN, AGR, IND,
20 miles from site
River -Lower
PROC, ,REC1, REC2,
Portion (HSS
WARM, COLD, WILD,
2.13, 2.12, 2.11)
RARE
Santa Margarita
Eutrophc
RECI, REC2, EST,
23 Miles from Site
Lagoon(HSA
WILD, RARE, MAR,
2.11)
MIGR SPWN
None
IND, NAV, RECI,
30 miles from site
REC2, COMM, BIOL,
Pacific Ocean
WILD, RARE, MAR,
AQUA, MIGR, SPWN,
SHELL
A-3
' Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
1 III. Pollutants of Concern
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1. For the proposed project discharge points, the proximate Receiving Water is specified using the
hydrologic unit basin numbers as identified in the most recent version of the Water Quality Control
Plan for the San Diego Region.
Proximate Receiving Water for Project Discharge Point
Receiving Water Order
Hydrologic Unit Basin
Number
Receiving Water Name
is(
902.32
Empire Creek
2"
902.32, 902.52
Murrieta Creek
3 th
902.52
Santa Margarita River
' 2. For each proximate receiving water identified above, the pollutant, if any, for which the proximate
Receiving Waters are impaired is provided in the following table.
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Pollutants for which the Proximate Receiving Waters are impaired
Pollutant for which impaired
Empire Creek
N/A
Murrieta Creek
Phosphorus
Santa Margarita River
Phosphorus
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Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
Parking lots will be used as the pollutant category for this WQMP. As such, the pollutants associated
with parking lots are listed below.
Pollutant of Concern Summary Table
Pollutant Type
Expected
Potential
Potential
Source
Present in Impaired
Waterbody (303d listed)
Sediment/Turbidity
X
Parking Lot
N
Nutrients
X
Landscaping
Y
Organic Compounds
X
Parking Lot
N
Trash & Debris
X
Parking Lot
N
Oxygen Demanding
Substances
X
Parking Lot
N
Bacteria & Viruses
X
Parking Lot
N
Oil & Grease
X
Parking lot
N
Pesticides
X
Landscaping
N
Metals
X
Parking Lot
N
There are no known legacy pollutants for this site. The pollutant of concern for this project is Phosphorus.
Description of Urban Runoff Pollutants of Concern Expected, per above Table:
• Pathogens - Pathogens (bacteria and viruses) are ubiquitous microorganisms that thrive under certain
environmental conditions. Their proliferation is typically caused by the transport of animal or human
fecal wastes from the watershed. Water, containing excessive bacteria and viruses can alter the aquatic
habitat and create a harmful environment for humans and aquatic life. Also, the decomposition of
excess organic waste causes increased growth of undesirable organisms in the water.
• Nutrients — Nutrients are inorganic substances, such as nitrogen and phosphorus. They commonly
exist in the form of mineral salts that are either dissolved or suspended in water. Primary sources of
nutrients in Urban Runoff are fertilizers and eroded soils. Excessive discharge of nutrients to water
bodies and streams can cause excessive aquatic algae and plant growth. Such excessive production,
referred to as cultural eutrophication, may lead to excessive decay of organic matter in the water body,
loss of oxygen in the water, release of toxins in sediment, and the eventual death of aquatic organisms.
• Pesticides — Pesticides (including herbicides) are chemical compounds commonly used to control
nuisance growth or prevalence of organisms. Excessive or improper application of a pesticide may
result in runoff containing toxic levels of its active ingredient.
• Sediments — Sediments are soils or other surfrcial materials eroded and then transported or deposited
by the action of wind, water, ice, or gravity. Sediments can increase turbidity, clog fish gills, reduce
spawning habitat, lower young aquatic organisms survival rates, smother bottom dwelling organisms,
and suppress aquatic vegetation growth.
• Trash and Debris — Trash (such as paper, plastic, polystyrene packing foam, and aluminum materials)
and biodegradable organic matter (such as leaves, grass cuttings, and food waste) are general waste
A-5
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Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
'
Parcels G, H, & I of LLA No. 03-0658
products on the landscape. The presence of trash and debris may have a significant impact on the
recreational value of a water body and aquatic habitat. Excess organic matter can create a high
'
biochemical oxygen demand in a stream and thereby lower its water quality. In addition, in areas where
stagnant water exists, the presence of excess organic matter can promote septic conditions resulting in
the growth of undesirable organisms and the release of odorous and hazardous compounds such as
'
hydrogen sulfide.
• Oxygen -Demanding Substances — This category includes biodegradable organic material as well as
chemicals that react with dissolved oxygen in water to form other compounds. Proteins carbohydrates,
and fats are examples of biodegradable organic compounds such as ammonia and hydrogen sulfide are
examples of oxygen -demanding compounds. The oxygen demand of a substance can lead to depletion
'
of dissolved oxygen in a water body and possibly the development of septic conditions.
• Oil and Grease — Oil and grease are characterized as high -molecular weight organic compounds.
Primary sources of oil and grease are petroleum hydrocarbon products, motor products from leaking
vehicles, esters, oils, fats, waxes, and high molecular -weight fatty acids. Introduction of these
pollutants to the water bodies are very possible due to the wide uses and applications of some of these
products in municipal, residential, commercial, industrial, and construction areas. Elevated oil and
grease content can decrease the aesthetic value of the water body, as well as the water quality.
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' Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
I IV. Hydrologic Conditions Of Concern
' Impacts to the hydrologic regime resulting from the Project may include increased runoff volume and velocity;
reduced infiltration; increased flow frequency, duration, and peaks; faster time to reach peak flow; and water
quality degradation. Under certain circumstances, changes could also result in the reduction in the amount of
available sediment for transport; storm flows could fill this sediment -carrying capacity by eroding the
downstream channel. These changes have the potential to permanently impact downstream channels and habitat
integrity. A change to the hydrologic regime of a Project's site would be considered a hydrologic condition of
concern if the change would have a significant impact on downstream erosion compared to the pre -development
' condition or have significant impacts on stream habitat, alone or as part of a cumulative impact from
development in the watershed.
This project -specific WQMP must address the issue of Hydrologic Conditions of Concern unless one of the
following conditions are met:
■ Condition A: Runoff from the Project is discharged directly to a publicly -owned, operated and
' maintained MS4; the discharge is in full compliance with Co -Permittee requirements for connections
and discharges to the MS4 (including both quality and quantity requirements); the discharge would not
significantly impact stream habitat in proximate Receiving Waters; and the discharge is authorized by
the Co -Permittee.
■ Condition B: The project disturbs less than 1 acre. The disturbed area calculation should include all
disturbances associated with larger plans of development.
■ Condition C: The project's runoff flow rate, volume, velocity and duration for the post -development
condition do not exceed the pre -development condition for the 2 -year, 24-hour and 10 -year 24-hour
rainfall events. This condition can be achieved by minimizing impervious area on a site and
' incorporating other site -design concepts that mimic pre -development conditions. This condition must
be substantiated by hydrologic modeling methods acceptable to the Co -Permittee.
' This Project meets the following condition: A
Condition A, discharges into the existing public storm drain systems. The discharges will be in full compliance with co -
permittee requirements for connections and discharges to the MS4, and the discharges will not significantly impact stream
habitat in proximate receiving waters. No downstream receiving water will be significantly impacted.
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Water Quality Management Plan (WQMP)
DCH Honda - Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
Attachment to Section IV
A-8
STORM EVENT
2 -YEAR
10 -YEAR
100 -YEAR
Pre-
Post-
Pre-
Post-
Pre-
Post -
development
development
development
development
development
development
CENTRAL BASIN
0.20
0.52
0.54
1.25
1.01
2.27
Q
cfs
0.06
0.17
0.17
0.40
0.32
0.72
Velocity
ft/sec
0.05
0.06
0.13
0.14
0.25
0.26
Volume
(acre-feet)
60
60
60
60
60
60
Duration
(minutes)
SOUTHWEST BASIN
0.09
0.23
0.24
0.56
0.45
1.02
Q
(cfs
0.03
0.07
0.08
0.18
0.14
0.32
Velocity
ft/sec)
0.02
0.03
0.06
0.06
0.11
0.12
Volume
acre-feet
60
60
60
60
60
60
Duration
(minutes)
A-8
tWater Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
V. Best Management Practices
V.1 SITE DESIGN BMPS
The project will implement Site Design concepts that achieve each of the following:
1) Minimize Urban Runoff
2) Minimize Impervious Footprint
3) Conserve Natural Areas
4) Minimize Directly Connected Impervious Areas (DCIAs)
1 Table 1. Site Design BMPS
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Included
Design
Technique
Specific BMP
yes
No
Concept
Site
Design
Concept
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Minimize Urban.
111' ' t ; .Milli 4
,,
Runoff
Maximize the permeable area (See Section 4.5.1 of
the WQMP).
X
Incorporate landscaped buffer areas between
sidewalks and streets.
X
Maximize canopy interception and water
conservation by preserving existing native trees and
shrubs, and planting additional native or drought
X, Site Previously
Graded
tolerant trees and large shrubs.
Use natural drainage systems.
X, Site Previously
Graded
Where soils conditions are suitable, use -perforated
pipe or gravel filtration pits for low flow infiltration.
X, Pere rate too fast
Construct onsite ponding areas or retention facilities
to increase opportunities for infiltration consistent
X, Pere rate too fast
with vector control objectives.
Other comparable and equally effective site design
concepts as approved by the Co -Permittee (Note:
X, Water Quality
Additional narrative required describing BMP and
Basins are proposed
how it addresses Site Design concept).
A-9
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' Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
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Table 1. Site Design BMPs (Cont.)
A-10
Included
Design
Technique
Specific BMP
yes
No
Concept
Site Design
Minimize
-;.
Concept 1
Impervious
Maximize the permeable area (See Section
X
Footprint
4.5.1 of the WQMP).
Construct walkways, trails, patios, overflow
parking lots, alleys, driveways, low -traffic
streets and other low —traffic areas with
X, water quality basins
open -jointed paving materials or permeable
proposed
surfaces, such as pervious concrete,
porous asphalt, unit pavers, and granular
materials.
Construct streets, sidewalks and parking lot
aisles to the minimum widths necessary, if
public safety and a walk able environment
X
for pedestrians are not compromised.
Reduce widths of street where off-street
X (No off-street parking area
parking is available.
proposed)
Minimize the use of impervious surfaces,
such as decorative concrete, in the
X
landscape design.
Other comparable and equally effective site
design concepts as approved by the Co -
Permittee (Note: Additional narrative
water quality basins proposed
required describing BMP and how it
addresses Site Design concept .
Site Design
Conserve Natural
�
Concept 1
Areas
� -�
rve naturalareas (See WQMPSection4.5.1.
Maximize canopy interception and waterconservation
7Conse
by preserving existing nativetreesand
shrubs, and planting additionale
was previously graded
native or drought tolerant trees and large
shrubs.
Use natural drainage systems.
X, Site was previously graded
Other comparable and equally effective site
design concepts as approved by the Co -
Permittee (Note: Additional narrative
X, Site was previously graded
required describing BMP and how it
addresses Site Design concept).
A-10
1 Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
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Table 1. Site Design BMPs (Cont.)
A-11
Included
Design
Technique
Specific BMP
yes
No
Concept
Site Design
Concept 2
Minimize Directly
Connected
Impervious
AreasDCIAs)
(
Residential and commercial sites must be designed to
contain and infiltrate roof runoff, or direct roof runoff to
vegetative swales or buffer areas, where feasible.
X, Water quality
basin
Where landscaping is proposed, drain impervious
sidewalks, walkways, trails, and patios into adjacent
landscaping.
X, Water quality
basin
Increase the use of vegetated drainage swales in lieu of
underground piping or imperviously lined swales.
X, Water quality
basin
Rural swale system: street sheet flows to vegetated swale
or gravel shoulder, curbs at street corners, culverts under
N/A
driveways and street crossings.
Urban curb/swale system: street slopes to curb; periodic
swale inlets drain to vegetated swale/biofilter.
N/A
Dual drainage system: First flush captured in street catch
basins and discharged to adjacent vegetated swale or
N/A
ravel shoulder, high flows connect directly to MS4s.
Design driveways with shared access, flared (single lane
at street) or wheel strips (paving only under tires); or,
X, Water quality
drain into landscaping prior to discharging to the MS4.
basin
Uncovered temporary or guest parking on private
residential lots may be paved with a permeable surface,
X, Water quality
or designed to drain into landscaping prior to discharging
basin
to the MS4.
Where landscaping is proposed in parking areas,
incorporate landscape areas into the drainage design.
X, Water quality
basin
Overflow parking (parking stalls provided in excess of the
Co-Permittee's minimum parking requirements) may be
constructed with permeable paving.
X, No overflow
parking proposed
Other comparable and equally effective design concepts
as approved by the Co -Permittee (Note: Additional
rrative required describing BMP and how it addresses
X
Ina
Site Desi n conce t).
A-11
Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
V.2 SOURCE CONTROL BMPs
' Table 2. Source Control BMPs
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Check One
Not
If not applicable, state
BMP Name
Included
Applicable
brief reason
Non -Structural Source Control BMPs
ItIONXIMIM
Education for Property Owners, Operators,
Tenants, Occupants, or Employees
X
Activity Restrictions
X
Irrigation System and Landscape Maintenance
X
Common Area Litter Control
X
Street Sweeping Private Streets and Parking Lots
X
Drainage Facility Inspection and Maintenance
X
Structural Source Control BMPs
X
No curb inlet catch
MS4 Stencilin and Si nae
basins
Landscape and Irrigation System Design
X
X, make sure drainage paths
Protect Slopes and Channels
are preserved
No car wash areas within
Provide Community Car Wash Racks
project
Properly Design:
X
No fueling areas within
FuelingAreas
the pro ect
No Air/Water Supply
X
Area Drainage within
AirMater Supply Area Drainage
site.
Trash Storage Areas
X, trash pickup routine)
X
No loading docks within
LoadingDocks
the voiect
X
No maintenance bays
Maintenance Bas
within the project
X, an oil water separator will
be used and discharges to
Vehicle and Equipment Wash Areas
sewers stem
No outdoor material
X
storage areas within the
Outdoor Material Storage Areas
project
No outdoor or:withit)]
X
processing areas
Outdoor Work Areas or ProcessingAreas
the project
A-12
Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
Education for Property Owners, Operators, Tenants, Occupants, or Employees: Once the project is
' completed, an educational program must be implemented to train all staff to ensure they know all activity restrictions and this
education must occur once a new staff comes in and once a year at a minimum. All maintenece staff must be trained and
aware of all bmp maintenance items listed in this WQMP.
IActivity Restrictions: All who occupy this projects premise must avoid tracking any forein material from (class II
aggregate base) area onto asphalt. A routine sweeping procedure must take place weekly to avoid any base to asphalt track -
out. All inlet catch basins must be clean and all area of inlet basins should be visible at all times.
' Irrigation System and Landscape Maintenance: All contracted employees must adhere to the irrigation and
landscaping practices located herein. See maintenance required for water quality basins in the maintence section of this
' report.
Common Area Litter Control: Keep project clean of trash and ensure proper handling of all wastes that they may be
' stored in a controlled facility. Trash tops must be closed at all times while not in use.
Street Sweeping Private. Streets and Parking Lots: Street sweeping in asphalt area of project will occur
regularly.
Drainage Facility Inspection and Maintenance: All drainage facilities must be cleared of any foreign material
and inspected and maintained regularly.
' Landscape and Irrigation System Design: Slopes on basins and depth must be inspected regularly and
maintained at all times.
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SPECIFIC
RESPONSIBLE
ACTIVITY
FREQUENCY
PARTY
Non -Structural Source Controls
Education for Property
At occupancy, within 3
Owners, Operators, Tenants,
months for new hires, and
Owner
Occupants, or Employees
then annually thereafter.
Daily
Owner
Activity Restrictions
Irrigation System and
Weekly
Owner
Landscape Maintenance
Daily
Owner
Common Area Litter Control
Street Sweeping Private Streets
Monthly
Owner
and Parking Lots
A-13
Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
L
I
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Drainage Facility Inspection and
Maintenance
Weekly
Owner
Maintenance Needed:
Irrigation System
Spray heads missing or
Weekly as part of the
Adjust or replace spray
Structural Source Controls
Landscape and Irrigation
System Design
Weekly
Owner
Protect Slopes and Channels
Weekly
Owner
Trash Storage Areas
Daily
Owner
Vehicle and Equipment Wash
Areas
Weekly
Owner
Irrigation/Landscape Common Area
Maintenance Item:
Maintenance Need
When:
When to Inspect:
Maintenance Needed:
Irrigation System
Spray heads missing or
Weekly as part of the
Adjust or replace spray
over sprays.
routine landscape
heads as necessary.
maintenance.
Landscaping/Common
Landscaping requires
Weekly
Mow and trim
Area
mowing or trimming.
landscaping. Also, pick
up loose trash.
Informational educational signs in appendix D will be posted in the temporary trailer to educate employees,
1 visitors, etc. concerning water quality and the BMPs used on-site. Although there are no CCR's, activity
restriction will be in place (i.e., no car washing, no landscaping debris from maintenance allowed onsite, no
vehicle/equipment maintenance allowed onsite, etc.)
' The locations of the covered trash containers are shown on the WQMP Map in Appendix B.
' Vehicle and equipment wash areas will be properly maintained and clean at all times. All flows within this area
used for any type of washing or cleaning must discharge to sewer system.
The owner will utilize both Integrated Pest Management and Integrated Vegetation Management to minimize
impacts to urban runoff water quality by minimizing pests and maintaining vegetation onsite respectively.
1 Also, irrigation will be minimized to the maximum extent practicable and watering will be only what is needed
A-14
' Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
for vegetation to maintain good health. The method of irrigation control reduces the amount of water used for
' irrigation and minimizes the potential for overspray and nuisance runoff.
Integrated pest management is an evolving method for managing and monitoring of turf and pests. The most
applicable elements of the integrated pest management program will be used. Potential pest populations or
I infestations will be monitored and, if no occurrences are identified, they will be treated immediately. A phased
implementation strategy of eradicating pest will be employed. Such a strategy will begin with the application of
the least environmentally damaging pest control and then increasing intensity of methods until the correct
' measure is used. Spot treatment of pesticides will be utilized where applicable to avoid application of large
amounts.
The owner will clean any chemical spills unless the spill is large enough to require assistance. In that case, the
' fire department's hazardous materials team will assist with cleanup procedures. Streets will be routinely
cleaned (street sweeping) to remove small particle size sediments with absorbed pollutants.
' Appendix D includes copies of the educational materials that will be used as training as part of this project -
specific WQMP.
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' Water Quality Management Plan (WQMP)
DCA Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
V.3 TREATMENT CONTROL BMPS
' Directions for completing Table 3: Treatment Control BMP Selection Matrix
For each pollutant of concern enter "yes" if identified using Exhibit B (Riverside County WQMP — General
' Categories of Pollutants of Concern per the instructions specified in Section III of this Template), or "no" if not
identified for the project. Check the boxes of selected BMPs that will be implemented for the project to address
each pollutant of concern from the project as identified using Exhibit B. Treatment Control BMPS must be
' selected and installed with respect to identified pollutant characteristics and concentrations that will be
discharged from the site. For any identified pollutants of concern not listed in the Treatment Control BMP
Selection Matrix, provide an explanation of how they will be addressed by Treatment Control BMPS.
' For identified pollutants of concern that are causing an impairment in receiving waters, the project WQMP
shall incorporate one or more Treatment Control BMPS of medium or high effectiveness in reducing those
pollutants. It is the responsibility of the project proponent to demonstrate, and document in the project WQMP,
' that all pollutants of concern will be fully addressed. The Agency may require information beyond the
minimum requirements of this WQMP to demonstrate that adequate pollutant treatment is being accomplished.
' In addition to completing the Selection Matrix, provide detailed descriptions on the location, implementation,
installation, and long-term O&M of planned Treatment Control BMPS.
The primary treatment control BMP for this temporary project is two water quality basins. The provided
' volumes for the two basins equal the required volumes with additional with freeboard. See basin design
worksheets in appendix F for details pertaining to layout ie: length, depths, widths, etc.) and WQMP map.
There are two water quality basins on this site, identified on the WQMP Map (Appendix B). A weighted
imperviousness ratio will be used to determine the water quality required volume and also the height of the
water quality water surface. Each water quality basin will discharge into an existing storm drain. The water
quality basins and outlet structures are designed to detain the first flush volume between 48-72 hours by
appropriately sizing the outlet orifice. For additional treatment cb filters are required at all cb inlet locations.
' The model number is FGP-24F (24" x 24") and a total of 6 will be installed. The site will be re -designed with
permanent BMP's at a later date
' Flows from an area of designated washing will be directed to an 8'x4' oil/water separator and then discharge
into the sewer system.
Supporting engineering calculations for the VBmp for the water quality basin volume are in Appendix F.
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Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, I4, & I of LLA No. 03-0658
Table 3: Treatment Control BMP Selection Matrix
Pollutants)
Treatment Control BMP Categories (9)
Veg. Swale
Neg. Filter
Strips
Detentla Infiltration Basins
Bas ns(2 &
Trenches/Porous
Pavement (3)(10)
Wet
Ponds or
Wetlands
Sand
Filter orSeparator
FiltrationSystems
UrHydrodynamic
(')
Manufactured/
Proprietary
Devices
Sediment/Turbidity
HIM
HIM
"_�•
HIM
HIM
1...
HIM
(L for turbidity)
U
Yes/No? Yes
X
Nutrients
L
HIM
HIM
L/M
• i
L
U
Yes/No? Yes
Organic Compounds
U
U
U
HIM
L
U
Yes/No?
Yes
Trash & Debris
L
;M=. U
U
HIM
HIM
U
Yes/No? Yes
Oxygen Demanding Substances
L
'M. HIM
HIM
HIM
L
U
Yes/No? Yes
-X
Bacteria & Viruses
U
HIM
U
HIM
L
U
Yes/No? Yes
Oils & Grease
HIM
; ' - U
U
HIM
L/M.
U
Yes/No? Yes
IffamX
Pesticides (non -soil bound)
U
13 U
U
U
L
U
Yes/No? Yes
Metals
HIM
H
H
H�
L
U
Yes/ o? Yes
=X
A-17
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Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
Abbreviations
L: Low removal efficiency H/M: High or medium removal efficiency U: Unknown removal efficiency
Notes:
V. ❑ Periodic performance assessment and updating of the guidance provided by this table may be necessary.
V. ❑ Includes grass swales, grass strips, wetland vegetation swales, and bioretention.
V. ❑ 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.
V. ❑ Includes infiltration basins, infiltration trenches, and porous pavements.
V. ❑ Includes permanent pool wet ponds and constructed wetlands.
V. ❑ Includes sand filters and media filters.
V. ❑ Also known as hydrodynamic devices, baffle boxes, swirl concentrators, or cyclone separators.
V. ❑ Includes proprietary stormwater treatment devices as listed in the CASQA Stormwater Best Management Practices
Handbooks, other stormwater treatment BMPs not specifically listed in this WQMP, or newly developed/emerging
stormwater treatment technologies.
V. ❑ Project proponents should base BMP designs on the Riverside County Stormwater Quality Best Management
Practice Design Handbook. However, project proponents may also wish to reference the California Stormwater
BMP Handbook — New Development and Redevelopment (www.cabmohandbooks.com). The Handbook contains
additional information on BMP operation and maintenance.
(10) Note: Projects that will utilize infiltration -based Treatment Control BMPs (e.g., Infiltration Basins, Infiltration Trenches, Porous
Pavement) must include a copy of the property/project soils report as Appendix E to the project -specific WQMP. The selection
of a Treatment Control BMP (or BMPs) for the project must specifically consider the effectiveness of the Treatment Control
BMP for pollutants identified as causing an impairment of Receiving Waters to which the project will discharge Urban Runoff.
A-19
Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
VA EQUIVALENT TREATMENT CONTROL ALTERNATIVES
Not applicable.
V.5 REGIONALLY -BASED TREATMENT CONTROL BMPS
' Not applicable.
Fl
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Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
VI. Operation and Maintenance Responsibility for
Treatment Control BMPs
Operation and maintenance (O&M) requirements for all structural Source Control and Treatment Control BMPs
shall be identified in the project -specific WQMP. The project -specific WQMP shall address the following:
■ Identification of each BMP that requires O&M.
■ Thorough description of O&M activities, the O&M process, and the handling and placement of any
wastes.
■ BMP start-up dates.
■ Schedule of the frequency of O&M for each BMP.
■ Identification of the parties (name, address, and telephone number) responsible for O&M, including a
written agreement with the entities responsible for O&M. This agreement can take the form of a
Covenant and Agreement recorded by the Project Proponent with the County Recorder, HOA or POA
CC&Rs, formation of a maintenance district or assessment district or other instrument sufficient to
guarantee perpetual O&M. The preparer of this project -specific WQMP should carefully review
Section 4.6 of the WQMP prior to completing this section of the project -specific WQMP.
■ Self -inspections and record-keeping requirements for BMPs (review local specific requirements
regarding self -inspections and/or annual reporting), including identification of responsible parties for
inspection and record- keeping.
■ Thorough descriptions of water quality monitoring, if required by the Co -Permittee.
Water Ouality Basin
There are also two water quality basins in this temporary project. The purpose of the water quality
basins are to remove pollutants from stormwater; not from onsite operations. Water Quality basins
provide the following pollutant removal mechanisms: settling or sedimentation; some infiltration;
adsorption to sediments, native vegetation, or detritus; filtration by plants.
Operation and Maintenance Practices
The inlet filters and the water quality basins need to be maintained and inspected by the owner. The following
table describes maintenance frequencies and responsibilities.
A-21
Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
11
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Operation and Maintenance Practices
Water Quality Basins
Preventive Maintenance and Routine Inspections
Design Criteria,
Maintenance Indicator
Inspection Frequency
Maintenance Activity
Routine Actions
Drain time
More than 48 hours or less
Each Storm
If time too long, open riser cap
than 72 hours.
and discharge remaining volume,
For full basin, goal is to have
within 1 day.
a drain time of 48 hours
Remove and dispose of
debris/trash from outlet/outlet
screen
Basin side slope planted for
Average plant height greater
Bi -monthly
Cut vegetation to an average
erosion protection and
than 18 -inches
height of 18 -inches and remove
planted invert
trimmings. Vegetation along the
side slopes can remain, and
periodically thinned to allow
access to the basin invert and
visual observation of the
operation of the basin inlets and
outlets from the maintenance
access 2oints.
Inspect for adequate
Less than 70 percent coverage
Monthly
Reseed/replant barren spots,
vegetative cover
on invert and side slopes
scarify surface if needed.
Reseed/replant preferably prior
to the rainy season. If
reseeding/replanting is not
successful, install erosion
blanket along barren spots
Inspect for standing water
Standing water for more than
Monthly, 72 hours after a
Check and unclog the
72 hours
storm event
outlet/orifice structure.
Inspection for trash and
Debris/trash present
Monthly and before a
Remove and dispose of trash and
debris at inlet and outlet
storm. Before and after
debris
structures
onset of wet season.
Inspection for sediment
Sediment depth averages 18-
Monthly
Remove and dispose of sediment
management and
inches or 10 percent of basin
when maintenance indicator has
characterization of sediment
volume which ever is less
been exceeded. Regrade and
for removal
revegetate
Inspect for burrowing
Ground squirrel holes, vole or
Monthly
Where burrows cause seepage,
rodent activity
gopher mounds
erosion, and leakage, backfill
firmly
General Maintenance
Inlet structures, outlet
Bi -monthly.
Take corrective action.
Inspection
structures, side slopes or other
features damaged, significant
erosion, emergence of trees or
woody vegetation, graffiti or
vandalism, fence damage, etc.
A-22
tWater Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
The following table represents the costs associated with the treatment control BMP's as well as the responsible
' funding party
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Annual
O&M
Responsible
Responsible
Structural
Capital
O&M
Start -Up
Frequency
Funding
Quantity
Costs
Costs
Dates
(weekly/
Party for
Party Party for
BMP's
($)
($)
monthly/
Installation
1'On
quarterly)
O&term
&M
CB inserts (FGP-
6
$2,000
$6,00
Prior to
Quarterly
Owner
Owner
24F)
Occupancy
Basins
2
$7,718
$3,200
Prior to
Monthly
Owner
Owner
Occupancy
A-23
Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
' VII. Funding
' A funding source or sources for the O&M of each Treatment Control BMP identified in the project -specific
WQMP must be identified. By certifying the project -specific WQMP, the Project applicant is certifying that the
funding responsibilities have been addressed and will be transferred to future owners. One example of how to
' adhere to the requirement to transfer O&M responsibilities is to record the project -specific WQMP against the
title to the property. The owner will be responsible for funding this project and for the operation and
maintenance.
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1 Water Quality Management Plan (WQMP)
DCH llonda — Parcel Map 23496
Parcels G, H, & 1 of LLA No. 03-0658
1 FUNDING CERTIFICATION
1 A source of funding is required for all site design, source control, and treatment BMPs. For this project, the
owner will fund the installation, and operation and maintenance of all BMPs set forth in this WQMP until the
project is transferred to a new owner. Each owner shall record this WQMP with the County of Riverside as an
1 attachment to the title of the property in order to transfer the O&M responsibilities to each new owner. Where
the owner requires a lessee or other party to install, and operate and maintain the BMPs, the owner will
maintain ultimate funding responsibilities, and will, upon default of the lessee or other party to fulfill these
responsibilities, shall cause the same to be performed at the owners expense. Nothing in this WQMP shall
1 prevent the owner from pursuing cost recovery from any lessee or other party responsible for the BMPs, or from
pursuing remedies for the default of responsibilities as provided by the lease contract and law.
1
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1
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The facility owner for DCH Auto Group
will be responsible for the installation, and operation and maintenance of all BMPs until such time that the site
is transferred to a new owner.
Owner or Con y Official's Signature
S o RTeb.—
Owner or Co tpany Official's Printed Name
Gary Sorter, Regional Vice President
DCH Auto Group
26755 Ynez Road
Temecula, CA 92591
Phone(951)669-3331x-2220
s/r7/z-01-.
Dat(!�
Owner or Company Official's Title/Position
A-25
' Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
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Appendix A
Conditions of Approval
Planning Commission Resolution
Dated
N/A
M P_R-05-2007 12:09 PM STAUERCH+RETAIL+DCCS
[1
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[1
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949 698 1192
P.02
' MFR -05-2007 12.10 PM STRUBACH+RETRIL+DCCS 949 698 1192
o:•
a tr;5q, i
' �, 11N�it1 D AftYNlEpia` V.
2 The appkant¢hapslg ipoth copies pflp�flnal Conditions of�provYlttt"
' byths PlonnN Drill ttBA aleft, and'trdutn one signed setnl
thptr fine*,
3 Ttie appncaijtsnd oy+nQr;af the real prepeiv subject to thisoohdlHon s�tdN
intlomNfy, {itr#fec hold'harmleas, end defOnd the City wflhi til G
selection from ary erxl aNclaims, actionsments; o
; awards, judgf pi
' City to attack; set aside, annul, or seek. monetary damages rAe�llting, dJrq
from any action in ltAherenca of and. the approval of the C i' ru',ar�e
Instrumentals thet'®of,;adVisory agency, appeal board oflegislpth+e dy1
' approved by the voters of.tits City, conopming the Planning ,t ppolcatlorr
deemed for purpoeep iof this condition, to include any agency or in
any of its elected Qr appointed officials, officers, employees consullents,
counsel, and egenla. City shall promptly notify both the applicantand
�+oceedtry'
claim, action, qr l. to which this oondition is applicab1tj and stall .
' fully In the defense;of the,octlon. That*y reserves the tipht'to takd s�tif •,
City deems to be "best blest Interest of the City and its dtize66 In regio
4. The pal mittae shaltebtaln City approval for any modificatlonsw fevigion r
this Temporary U� feimit ,,
vt
S. This Temporary Use Permit is valid from January 16, 2007 to
time .the applicant Would like to continue car sales, a day
structure win need to be constructed. Otherwlse, any extenalott'
' submitted In Wrding.to the Planning Director for Planning Deper
S. The Director of Planning may, upon, awappllcation being flied;
' a ptrgtfon, and fof qod ones, grant alms extension of up...
time ohs year
VVIA qme.
7 The developmentgt the premises shall Substantially conform to
' fie with the Ptannitig Department
p
%
8. The alta ehiia be 1t iored to Its original condition or better foliawing <
8 Any signs u®ed h conJunctlon with thle use must be parrttltta>t
Planning bep'tt�ttmnt� ;. "�: a�
1A All of the, 004 a contalned in. d ft approve) ahan e
alarttfrtertc®tttbnt$c�tiil� ttrporery evorf or any use anowed d;y
11 lies appllistllaq y with their 8rnent of Operatltme
ties PerrtdLtt Octoberbe. i,' ,i r
' 12 ` "ghlg apptbaejYttl bib tpvoked or mb."ad by. the Planrntq�
t3eotbn17:t73p804(1hsi3'ai►elopmerltCnde. ;� y ;}, . ��'.
' 1� iTn)ah-o011g�On��r$!as'ehe,H be 1poaited':wie+ln
approved).?hbai c rsttlre'should notb (isibleirprtt'
a-Viannirlgt200WA0&0328 DCH Inv Major TUP�Pienn1M9ZGndWone of APPrmel.doo f '
P.03
' MaR-05-2007 12:11 PM STRUEPICH+RETaIL�DCCS 949 698 1192 P,04
y
14 COftmpr and rking spaceeehall be located on epevsd'bu►� �
Ah the deslpri tprt on apadliC no esleblli had
nierked with paint of 8esily distinguishable malarial } , �' • ,�
' 15.
Sop erateparmits ars required for all efgrasge. Signage types, quenUUae, b1d ad vl Fn
tonslstant with 6ection 17.28 of the DeVa1opment Code........
1 '
16. The temporary Inventory spaces shall be limited In use to include only
end used vehicles 4qr silo or storage. Customer and amployae paAclnp she
t
the area reserved fbiInventory spaces: ° � � a
17. All chain link fencing shall be temporary end may not be permitted upon the ev,11
Temporary Use Permit. I�
18. Any outdoor furniture shell be reviewed and approved bythe'Planning l)ireGorfal'tapa�
as part of this Temporary Use Penult Application.
Landscaping
19. Provide a header between the lawn area and shrubs:
20. Provide an enclosure for the backflow device.
21. Appllcent Is lwsf@ lhaf landscaping, including perimeter lendacaping M"oy'
' modiflod WOiCode or Design Guidelines, If applicable et the illus a per♦fari a.
devetbprt►e submitted at this location.
' DEPAA7Mt'WORtt8
22 lit le laptherba�eer3p od, ®11 conditions shall be completed by the 0egeloptlt
' a3 °!'7'1' il!;it('underatoobt}elthet�veloperoorroctlys�c►Mr8'
e end property lines, easements, treveled xdae lrrtpro F� Y
Arad 2 as; i lid their omission may require the prviact" btu'
' skin;X.
29 /R�3 q fpfpreplsograding, Including all on,siteAetvybrkar}d! v s � .
' bA�°thee>Qgpartmant of :Public Works prlor,.to cdrr+rFl Pk
s z t.F
c0 ytaf bf.lha Clty-malntamad street rightsifANay l i tint+ I i
�♦ Tit J:J 'Ki• Y, f.. ,�.Il h
(/� l nw c ' it shell be obte ed from the Deparfo*nt pf Y
' y oonstivdion 4A anexisUng or, pr'opoeed
coordinated consistency wlthlA�i4i ql
to the 46"shall be submitted on a�l
-� w
T I:� T
5}
de opnstiuotlon pljase pollution pZ"*M
n r
gaistlty.prote�lmt.jneaeures InW� . r
{�Qj} dischargingtffslte or enteringtp,,{
' r t vw lw.:: f S t �C,'h�> Y� alfii7 5 lli y t 4M
i I.A
G:WIenningl20091PA0B•03R®DCH Inv MDior TUPWIan ninglCon011bneclat ppplovlldoc
4.
MA.R-05-2007 12:13 PM
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STAUBACH=RETAIL4DCCS
949 698 1192 P.05
11, 07,
to vvwt-wnl sropmYc'mu my
anigii*4:-,PirM
813144110AND BAFSTY:bEl[ f11AENT
28, :,AH,.,.daWjn Co' rwft 0*11 comply VA40(cabl" Provis"
-Pluirribing and Mai$i1arilcal Codes; 20041
001116frge MrininletifsVve Code, Tide 24 energy 0o de� Call InL
F;iaguqatlon and the Temboula Municipal Code,
29, The City of Temecula. has adopted an ordinance to collect fG84 1
wide Transpofttiph,UAibi.nMiggatlori'Fee(TiJMF). Upon thqP
March 31, 2003, 1 his proapt will be sUblacrito payment of these
permit lasuanc . 4: faM If BODII "I'll the proiect, shall 126:
Ordinance 03-01 arid the fee schaduuWN affect at the HM. O-bfb
30. Submit at the of pion review,
view, a complete exterior site lighting.
with Ordlnan,66WJ9for the regulation 4f light pollution. All 4111
11l;lhIting shall'be -40M'on electrical 01ans submitted to the Z
Safety. Any wlaitijlllghtlng shall, be hopIded and directed i6�'
adiolning property 60dolle'rights-of-way, As applicable 61his
31, A receipt orclesre6ce Wftr from the Temecula Valley Scho,014
the Building. A.1§8ifeti, Department to is I nBUre the paymatiril
Mitigation Fees. M. applicable to the scope
CPO of work propio
32. Obtain all building ,plans and permit approvals prior to cornmer
Work.
33, Show all bu"104*06"as,
34.
35. AN building and4dilitie W.Mcomply wloepplicabledisAbi6da
qallifornia Diath*4 Access Roo
2,
.36 -P
'Mow, pAblid4wess.from the pubi!j , ey to the mOln'.
37 T�01",lvnd* 00yers, light standards, and a. blo
01"i"WU r6qUite-vaperste a* tali and pe
30. min 1sItj4,a . 00inisaing for an proposed buildings prior to
G�P*rd%IINDIPPA0642M uCH Inv Mejor TU"lanning%CandWans Of
.of the *I
' MAR -05-2007 12:14 PM STAUBAOH-RETAIL+DOCS 949 698 1192 P.06
. b • S r !4'J ,,� ';1� ems+
"SIp'aoelsh®l apo 4 Wcu)ugly attbesntrencetOwpm. 4
ttf:cdneltuclieita b ; 4a agomr�d by the Clty, 4011 ary(apgl8 #�
apaclficaily SpNo Itiverelde t:4►nty Ordinance Na 467:79, totan 5 T.
' quarter mHa 4f an id residence,,:,:
MonAay,Ftldey 6:30 a.m. 6:30 p.m fi+a 2 "t r
a
§(Siu
' Saturday 7:00 a.m. 6:30 -p.m.
No work is parmlllod,on Sunday or Government Holidays i
40, Restroom fixtures, nu tibpi and type, to be in accordance with the prOVW.ons p
edition of the C®W4p .Building Code Appendix 29. +
41.Provkis electrical plan including load calculations and panel schedule„pfuitlp
and mechanical plan applicable to scope of work for plan. review, As pppl!
' scope of work proposed.
42. Truse calculations thpt'are stamped by the engineer of reoordend ”
engineer are regdlhed for plan review submittal. As appflaNblr <'
' proposed r a'� ,' A'r
43. Provide precise grading plan at plan check submittal to check' ;
' disabilities.
44. A pre=oonstruction,mesting Is required with the bullding raspY tNe7€;.
buildingconatruc¢on;
' TEMECULA POLICE CRIME PREVENTION B PLANS UNIT
46,; Adequate.ltphtingtntlllbaplaced atrategicaWythroughout the{� r
adequate Ughtin b• 'b
pplhr4iughouttheentiroperkingtecili
IAL Palomar lig 0q-,,0rdlnence and should be Iilumirkl ,INlth r 'a
' dandle of Ilght at ground level, evenly dispersed.
46, Applicentwtlipo8taplpnwltha24houretnergencycontsCtrurtl4 rr
' response to -the sitsand a point of contact needs to be loosed. rh
COMMUNITY.BER'biQ@ VEP1 ATMENT
' 47. Provide a Veslt'�la�osura large enough to accommodate
jec.p ng.
48 7tie t1 1k�psor t•gpnWct the Cltys franchised. Ud , .
t rant otWend l Mori tleMs. 0�lythe City'e fra,
, Y
Tho A Wow s e�`ootnply with the Public Art Ordinsnab
0:1PIa4n1npt2008V'A06.0326 DCH tm Melor.TllPtPlsnnln0Condltlone of Appragaj�l9cr' � r
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MPR -05-2007 12:15 PM STAUBACH.RETAIL-DCCS
949 698 1192 P.07
61. The F" pWWftn:Rurm is'regwrep jorlet a minimum fire low ?or ins pony
oommeniii6tildi*-,po'ib'rcApp6nibot.A, Table A -III -A-1 "Tti'sAG**
fpr this project, a *pJygisron capable ;o6fivehng 1500 GPM et 20 081 4W
w
press . uns, fora 2 hou'r-6 , ration, (CFC 012, Appendix III -A)
52, As required by the California Fire Code, when any portion of the 1`8011111y
feet from a water supply on a public WeiK as measured by an approo
exterior of the facillty, onsite fire hydrants'. req
hydrents 'and main$ Capable of SUPOY
are - � I,,
flow shall be provided. For this project ion site fire U,ri
53. Prior to building i6onstrijetion, all locations where strictures. are 10
approved Fft'D
Votmarit vehicle access toads. Tamp Ana
shall be anidl,weattusr surface for KOOD ibs, GVW. (CFC, 8704.2 an
54, All manual and electronic gates on required Fire Department.eca
obstructing Fire Department building access shall be provided with th
55. Provide two; 2-A:1 013C fire extinguishe r mounted on the wall. next to 6
Se. PoatrMar
'signs In the tents and canopies. (CFC 3215)
57.
comply with GFC section 3207and.OaftOa CoObtf,
iy shall be labeled or provide Oedlfi¢ Etior)', 114M64
Marshal.
e of a commercial a p 0"' b i I Ni I i bi ".;' I 'SO
,Tc,tsd toph physical
No dam"d, a,
cord 6 damage.
1
shall b einaccorencewlthArtclel-6,
59 4?Ow lf-I ous atsigns or illuminated SAt
W�wo:mwtthwmin shall be sipirats from all'Other, ckcUII
,
where
IrecV66 ofJjMew,�(CFQ.,,
'0690'to clearly Indloate the d
80 Cait00houresu at (W) 694-6405 to schedule an InspiseW
of Oi�!t prior to* e#vent.
3
IRA
G:f I9nnIn;;W0MPAOr,-o= DCH Inv Major TUPPIanningCondOns of Approval 06Co'.
7
' MAR -05-2007 12:16 PM STAUBACH+RETAIL>DCCS
949 698 1192 P.08
' MAR-05-2007 12:17 PM STAUBACH-RETAIL-DCCS 949 696 1192 P.09
r,
t>Ef►Il1NEN7 OF AUBL'tC NtORKS
81 The temporary pt�ttte lot shall be paved*n h as shown on tits apPrnva�d
ai Vehk�Ve store®e area — A" deep Mess II aggreaete surface zl - w� t, `
b, Perking lot 9"A.C. over native surface. w
82 A Grading Plan O"M ba prepared by a r8glstsred Civil Engineer andl9Fte11
the erK of.Pub1l' Works, The grading shah thcdU a l{ a lG a
approved! protect adjacent pubtic prod
' erosion control measures needed to ed�quataly
63, The Developer shalt post security and enter into an agreemerrtgueratrpaelgp RiyPQ iu fy
erosion control linObvenients in confort'nancs with applicable Clty'Standattiit
approval by the Department of Public Worcs. M '
64: A Soil Report shall be prepared by a registered Soil or Civil Engineer and
Director of the Deportment of Public Works with the Initial Grading, plan oHel�C
' shall address` all salla conditions of tis she, and provide reoo
construction,of srAiineerad structures and pavement section$,
65. Construction-phase pollution prevention. controls shell be consists4" ,
Erosion & Sedilmint''Control Ordinance, and associated techri al ; � th4 tyltys .
standard notes foitroslon and Sediment Control,
���`rvw
y.•
66. The project shalt; demonstrete coverage under the State Werndt fol
Construcion:A*les by providing a copy of the Waste Rt +tart '
' (WDID) issued by"the State Water Resources Control R66M''
Pollution Prpverilloh Plan (SWPPP) shall be avallabie at the
construction scovtaes.
x )
' 67.As deemed necessary by the Director of the Department oR'Pub�io
shall reoeive''Wrltten clearance from the following agencies
r •�i '�y'R mY 1
a, San Urego,fleglonal Water Quality Control Board
' b. Rlvereide County flood Control and Water Conaervatloit
c, Planning I partrnent hh g r°•lr11
d. Department of Public Works
66 "'Che Develo 11 k k* comply with all oor"ints which May,
'Gon6lralrrt "i-0CS)x rdedwith!anyunderying:M6a Sa ,
60 The sopIlcp13t"j#46bhtpty With the p*slons of Chapter9, T,
' Code(hlab" �f�lstfori)`bYP®3aR9 approprlet®fee
rw,
`".proMding db �ittad evidence that t}0.feea nava already
..TP
A' flobri mitpe�on'oherde shall be paid. ;The. Area
RivereMeGDuhtyPlr>odControland ViorConseryaUon it l"i'4s
noneq orti etrtbr to i's�tlanbe of pant t basad on
ttro full m01an fee or lien.cho
'
F 1
pti'opaity; hd riti�aheede to b r � � r t „ > , ,X
Kf +e
ar'�it
fl;1PleoriMg\30O8WA0&0318 DCH Inv Melor 7UP\PlennlnplConO R ne or ApprQvuldec
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MAR -05-2007 12:18 PM STAUBACH-PETAIL4DCCS 949 698 1192 P.10
'V�
EN
SAFET�,.OE T
71�i 9 approprietbAUMO 9 mg -professional Wth 6rWIr
16 permh iist4ncc"-;`
CC OUNIte SERV,1608'#'!�PA$TIIIIENT
72. The :dwAlopej sto.1 pwvlds To, SO; * vWcetlon of arrang"
franchise soil . d was I W be0er for disposal of construction and del
w 9MAII
FIRE PRE.Yr. 110NOU
71 Prior to
blook;;and i
the plans a
Prevention
installed w
materials t
Protection
Aiding permits, the developer shall furnish or%&Ooi
sPieverdlon Bureau for approval prior. to InstalRatl0%
cMl engineer: oo.hisln a Fire Prev
iydrant type, location, spacing and minionurh firO
1hei lo6al watercompany, the originilli ah*0Q;.
on an indMcI401 lot,
Si
t
MAR -05-2007 12:19 PM STAUBACH+RETAIL�DCCS
F
11
949 696 1192 P.11
,
a
Ex, �ts
rl
!L�[11-1
UK?,
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as.
R
1r .�•
ry
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PRIOR TO ISSUANCE OF OCCUPANCY
r,Y Ix� �Y wl if�'"iT
F.4 wa,Xtt
� r
f 1 � i•
' G;VPIdnnln0�200$wAOB-0928 DCH:im Me)orSUPWIanMnpSCor,dtllona otApprovaldoC
I
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MAR -05-2007 12:20 PM
STAUDACH+RETAIL4DCCS
949 698 1192
�J
'top,
74 T i'Pmeonst*ate .that tha ppoutlon prevention
tteiva been Co and installed In conformance with appvWa
imrtiedinte ►pr lerrlerltatlbn; `
doeiped .jtepa"ary.by the Department of Public Worke„dye r Y
wrJtban clearer+irtfl the following agendas:
®,-Raric.ho CallfomipWater District
r
f: Eastern Municipal Water District
®, DepodmontOf Public Works yFi
78. The existing ijn"v.pmahta shall be reviewed. Any appurtenance damaged -ori �t
be repaired drr w*od end replaced to the satisfaction of the Directorofthe'b
Public Worfcf , 'Ir
k,yTr
FOE..PREVENTIOpirJ�UR U". " r
77. Prior to iss' �.iy, Certificate of Occupancy or: bullding.flnal, apptt
addresgee, iblrgled on all naw end existing buik9npia In aLah 1(06 1, }
plainly foa m the straitbr road fronting the'.prgp", ,t�Wth
contra 'background.. C ommercial, multi-femlly ragtag Mj clam x �
bui
a minlmum
iwelve(1'2)'Inches numbers Wth suite num"
4I wi
(CFC 901.4,+0)
8 Certificate of Occupancy or bullding ttjy�al, "-piprref0p
kav' obtaining underground and/or abarp>to K p
efgr a°pt. kulds,flammable liquids orany othel
tingitt rtriient and Firs Prevention BureaU.(CC.'19Q7,�"acrd`
01 i 9 e
0 Te
i a il 4 a� Y9
BY Pled +y►!* gp plpVu,'I confirm'" 1!have read, understerkd attd 1a
ConditionsQ! rthaltvndarstand that the property shall tie.m�It� 4
with thtlee fiivflI and that any #ranges I may wish to MA4 to
subJat t to'l alit Department approval.
Date
en+„�d
a F i 5;t 6
r r +U
r P w� ,
61
v e
0:1FMannlnpt�0091PA0e•0926 DCH Inv major TUPiPleaninglCaedRI ► o1 Appm"I doe
P.12
i
'•a e1
�lc,,.
�J
'top,
74 T i'Pmeonst*ate .that tha ppoutlon prevention
tteiva been Co and installed In conformance with appvWa
imrtiedinte ►pr lerrlerltatlbn; `
doeiped .jtepa"ary.by the Department of Public Worke„dye r Y
wrJtban clearer+irtfl the following agendas:
®,-Raric.ho CallfomipWater District
r
f: Eastern Municipal Water District
®, DepodmontOf Public Works yFi
78. The existing ijn"v.pmahta shall be reviewed. Any appurtenance damaged -ori �t
be repaired drr w*od end replaced to the satisfaction of the Directorofthe'b
Public Worfcf , 'Ir
k,yTr
FOE..PREVENTIOpirJ�UR U". " r
77. Prior to iss' �.iy, Certificate of Occupancy or: bullding.flnal, apptt
addresgee, iblrgled on all naw end existing buik9npia In aLah 1(06 1, }
plainly foa m the straitbr road fronting the'.prgp", ,t�Wth
contra 'background.. C ommercial, multi-femlly ragtag Mj clam x �
bui
a minlmum
iwelve(1'2)'Inches numbers Wth suite num"
4I wi
(CFC 901.4,+0)
8 Certificate of Occupancy or bullding ttjy�al, "-piprref0p
kav' obtaining underground and/or abarp>to K p
efgr a°pt. kulds,flammable liquids orany othel
tingitt rtriient and Firs Prevention BureaU.(CC.'19Q7,�"acrd`
01 i 9 e
0 Te
i a il 4 a� Y9
BY Pled +y►!* gp plpVu,'I confirm'" 1!have read, understerkd attd 1a
ConditionsQ! rthaltvndarstand that the property shall tie.m�It� 4
with thtlee fiivflI and that any #ranges I may wish to MA4 to
subJat t to'l alit Department approval.
Date
en+„�d
a F i 5;t 6
r r +U
r P w� ,
61
v e
0:1FMannlnpt�0091PA0e•0926 DCH Inv major TUPiPleaninglCaedRI ► o1 Appm"I doe
P.12
1
MAR -0S-2007 12:20 PM
STAUBACH41RETAIL-iDCCS
949 698 1192
tate that Bre pollutlon prevent
installed In Conformance with
i
ary.by qhe Department of Public Worke,.tha Da�alogar l
rYrri firs foflowtng egenciea: ;
e. -Rancho CalNomisti Water District
f: Eastern' Municipal Water District
®, Depeirtment of Public Works
' 78. The existing lmprovstmehts shall be reviewed. Any appurtenance do
be repaired orremoirad and replaced to the satisfaction of the Dired
Public Works.
FIKCorKCYGr011VrM %wFMnu.. {
i
77. Prior to is pf a 9,ertificats of Occupancy or buiiding:final, apple dIt
sddreeees, ad on all naw snd existing buildings in s'uah a'a�oaga
plainI f}� rpm the atrebtQr rued fronting Me'property, , w'11 dt
contra Wckground.' Commorclal, multi -family realder qa1 A
bulId a lrt9Mmum twelve(12)Inches numbers with suite nuptbarS":
o'Fsix It (CFC 90 1.4,4,)
78Prigf aCertificate of Occupancy or building fJnel, 8►a4pvep
n vbtalning underground and/or abovel tank Q
sfq e, ilqulds, flammable liquids or any o&Y®f valla
the rtmeni and fire Prevention Buresu.(CF'C 764t,:9k `
1,
BY placing 6 glow, 1 confirm"htiave read, understand attd to
Conitltlons3af rthatvnderstand thit the property shall t* riiw n f
Yallh those, l and that any changes I may wlsff to males ie
subject ant Department approval. " . M
Tl
� a
�_.
Data
P.12
RM 14 a nt� :r r S r`A iy'li�wch�°&Ya F: h��f 7
pp1lCt�rtt' �, � N{ M7 :lYP t W i
' Y• IF w; 1:. i w +� M
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0:YPIanningY200MI`A0e•0725 OCH Inv Msior TUP1PIenningYcond9lum of Appmwl d0c
12 .t 7Ltju+ d
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Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
Appendix B
Vicinity Map, Receiving Waters Exhibit, and Site Plan
1
1
1
1
1
TO SAN DIEGO
N.T.S.
PL NNING ■ DESIGN IS CONSTRUCTION DCH HONDA
27555 TTEZ ROAD, SURE 400 VICINITY MAP
TEMECULA CALFORMA 92591-4879
CONSULTING 95LS768042 • FAX 95L6767240 • w MF.can
K
1:600000
5 0 5 10 miliis
A
N
N
if a.O 9 1 MR.
L Yl 4
All,
71
IL
t
T A T A
DCH Auto Group
DCH Honda
PLANNING D DESIGN 13 CONSTRUCTION
40810 COUNTYCENTeR DRIVE, SUITE 100 RECEIVING WATERS EXHIBIT
TEMECULA, CALIFORNIA 92591-6022
951.676.8042 FAX951.6767240 wwwRBF.com
'71
gr
K
1:600000
5 0 5 10 miliis
A
N
N
if a.O 9 1 MR.
L Yl 4
All,
71
IL
t
T A T A
DCH Auto Group
DCH Honda
PLANNING D DESIGN 13 CONSTRUCTION
40810 COUNTYCENTeR DRIVE, SUITE 100 RECEIVING WATERS EXHIBIT
TEMECULA, CALIFORNIA 92591-6022
951.676.8042 FAX951.6767240 wwwRBF.com
(TYP.)
INLET FILTER DETAIL
NTH 3/8" BOLT
CRATE OETA/L
NOT TO SCALE
HYDROSEEO FOR
SLOPE
PR i -Ill N
6
MAX
(A)
(B)
(C)
WQ ELEVATION
STANDARD = 20 INCHES
SHALLOW = 12 INCHES
VES
OR APPROVED EQUAL
OUTLET DETAIL
NOT TO SCALE
LENCIH UAR/ES
WATER OUAL/TY
ELEUA170N(SEE CRAIE OETA
HEREON)
BAS/N TO BE HYOROSEZ,90
ANO SLOPES MUST BE
PROFOIT'0 (SEE WOMP
FOR o, 1AW S)
SECTION B (TYPICAL)
NORTH BASIN SOUTH BASIN
1046.4' 1044.0'
1041.1' 1039.8'
1047.0' 1045.0'
1046.4' 1044.0'
SCALE: V.30'
30 0 30 60 90
SCALE: 1"=30'
LEGEND
1
SURFACE FLOW DIRECTION 0
TE
WEEKLY STREET SWEEPING
- - PROPOSED STORM DRAIN
---- PROJECT BOUNDARY
HYDROLOGY BOUNDARY
3" MINUS ROCK
HYDROSEED (MANUAL IRRIGATIONUNTIL VEGETAION BECOMES SELF
SUSTAINED)SEE NOTES HERON
VEGETATED AREAS W/ EFFICIENT IRRIGATION CONTROL
COVERED TRASH ENCLOSURE
CLASS II BASE PARKING LOT
PROPOSED CONCRETE
PROPOSED ASPHALT
EXISTING STORM DRAIN
FGP-24F CATCH BASIN INSERT
HYDRO SEEDING NOTES
-HYDRO-MIX SLURRY SHALL BE AS
FOLLOWS:
I. S(ED AS SPECIFIED
II. FIBER 2,000 LBS. PER ACRE
III. M -BINDER 100 LBS. ACRE
IV. WATER 3,000 GAL PER ACRE
OR AS REQUIRED
V. FERTILIZER/SOIL CONDITIONER
1,100 LSS PER ACRE
-OWNER SHALL MONITOR WATERING
TO PREVENT BROWNING AND FUNGUS.
DE
CON/TE CHANNE117-411
NOT TO SCALE
SECTION G-2
NOTTOSCALE
PFPLANNING ■ DESIGN ■ CONSTRUCTION
40610 COUNTY CENTER DRIVE, SUITE 100
■ TEMECULA, CALIFORNIA 92591-4679
CONSULTING 951676.8042 • FAX 951.676.7240 • w .RBF.com
PROP.CHAINLINK
FENCE
R
--{{ VARIES
1 3 5 3 I
NOTE:SWALE TO BE FH OSEEDEO
I0�-RR m VEGITATION OAR LI
MATERIAL IS PERMITTED IN SWALE.OM
SECTION C-2
NOT TO SCALE
*SEE LATEST ORA0INO
PLANS FOR ACL DETAILS
1H/S EXH1B/T/S
CONCEPTUAL 1N NATURE
DCH HONDA
WQMP SITE MAP
t
t
5 r
a
k
�J��-��
-(",AAA
rr�nr,.�
SECTION G-2
NOTTOSCALE
PFPLANNING ■ DESIGN ■ CONSTRUCTION
40610 COUNTY CENTER DRIVE, SUITE 100
■ TEMECULA, CALIFORNIA 92591-4679
CONSULTING 951676.8042 • FAX 951.676.7240 • w .RBF.com
PROP.CHAINLINK
FENCE
R
--{{ VARIES
1 3 5 3 I
NOTE:SWALE TO BE FH OSEEDEO
I0�-RR m VEGITATION OAR LI
MATERIAL IS PERMITTED IN SWALE.OM
SECTION C-2
NOT TO SCALE
*SEE LATEST ORA0INO
PLANS FOR ACL DETAILS
1H/S EXH1B/T/S
CONCEPTUAL 1N NATURE
DCH HONDA
WQMP SITE MAP
Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
I
[1
11
11
1
1
[1
1
1
1
Appendix C
Supporting Detail Related to Hydraulic Conditions of Concern
1
DRAINAGE STUDY
DCH Honda
Parcel Map 23496
Parcels G, H, & I of
LLA No. 03-0658
January 2007
Prepared for:
DCH Auto Group
26957 Ynez Road
Temecula, CA 92626
Phone (951) 699-3331x-2220
Report Prepared By. -
IMF40810
y:40810 County Center Drive,
Suite 100
Temecula, CA 92591
B B a 951676-8042
CONSULTING
Engineer of Work/ Contact Person:
William Keller, P.E.
Frank Gerard
RBF JN 15-101579.001
Revision
Date
' Table of Contents
Introduction
' Hydrologic Methodology
Hydrologic Analysis -Proposed Conditions
Conclusions
' References
1 List of Figures
Figure 1: Vicinity Map
' Figure 2: Hydrology Map — Proposed Conditions
' Appendix:
' Data from the Manual
10- and 100 -year Rational Output
Water Quality Calculations
H
1
1
1
ll
DRAINAGE STUDY
I. INTRODUCTION
DCH Honda -Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
The proposed project is located in the City of Temecula, Riverside County,
California. The site is situated between Ynez Road and Interstate 15, north of
Rancho California Road. Figure 1 shows the location of this project.
' This study, which accompanies the precise grading plans, specifically
accomplishes the following tasks:
' Determine the peak post -developed onsite 10 -year and 100 -year
' runoff
s• Design water quality basins to mitigate in accordance with the
criteria in the Riverside County Flood Control & Water Conservation
' District's (RCFC&WCD's) Riverside County Stormwater Quality
Best Management Practice Design Handbook (Reference 1.)
1
' II. HYDROLOGIC METHODOLOGY
' The methodology presented in this study is in compliance with the RCFC&WCD
1978 Hydrology Manual (Reference 2), hereinafter referred to as the Manual).
' Model Descriptions -The Integrated Rational Method Hydrology System Model
' Version 8.0, dated January 1, 2000, (Reference 3) within the Advanced
Engineering Systems Software (AES) was used to generate the peak 10 -year
' and 100 -year onsite flows.
' Soil Type - The Manual utilizes the Soil Conservation Service (SCS) soil
classification system, which classifies soils into four (4) hydrological groups
(HSG): A through D, with D being the least impervious. According to Hydrologic .
F
1
I
DRAINAGE STUDY
1
DCH Honda -Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
Soils Group Map, this project lies within a mixture of HSG "B" and "BC." For
conservative purposes, HSG "C" was used in this report. A copy of the HSG
' Map is included in the Appendix.
' Development Type- The proposed development was based on commercial
' development.
' Intensity-Thel0-minute / 60 -minute intensity values (inches/hour) for the 10 -year
and 100 -year storm events, obtained from Plate D-4.1 (4 of 6) of the Manual, are
' 2.36/0.88 and 3.48/1.30, respectively. A copy of the above-mentioned plate is
included in the Appendix.
Drainage Areas and Flow Patterns - The drainage areas and flow patterns
' were determined using the precise grading plans. The areas were measured
using the computer capabilities of AutoCAD.
III. HYDROLOGIC ANALYSIS - PROPOSED CONDITIONS
' This proposed drainage patterns for this commercial development are shown on
' Figure 2. The site drains to two water quality basins. The discharge pipes from
the basins will connect to existing storm drains. These pipes, as well as all
' hydraulic facilities, will be designed in a future submittal. The results of the
Rational models are shown in Table 1. All Rational output is included in the
' Appendix.
1
' 2
I
1
1
[1
DRAINAGE STUDY
DCH Honda -Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
TABLE 1
SUMMARY
RATIONAL RESULTS
10 -YEAR & 100 -YEAR FLOWS
Basin*
Q10
Q100
cfs
cfs
A
9,1
13.4
B
4.3
6.3
* See figure 2.
' The required water quality for Basins A and B are 0.26 ac -ft and 0.18 ac -ft,
respectively. All pertinent calculations are included in the Appendix.
IV. CONCLUSIONS
1
' 1. Methodology used in this report is in compliance with the Riverside County
Flood Control and Water Conservation District (RCFC&WCD).
1
2. There are no anticipated adverse downstream impacts.
V. REFERENCES
1. Riverside Flood Control District and Water Conservation District, Riverside
County Stormwater Quality Best Management Practice Design Handbook,
July 6, 2004.
2. Riverside Flood Control District and Water Conservation District Hydrology
Manual, 1978.
3, Advanced Engineering Systems Software (AES), Rational Method
Hydrology System Model Version 8.0, January 1, 2000.
3
1
1
1
t
1
TO SAN DIEGO
N.T.S.
PLANNING ■ DESIGN ■ CONSTRUCTION
t (x B,
27555 YNEZ ROAD, SUrrE 400
m TEMECUL4, CALIFORNIA 9259F4679
C O N S U LT I N G 951676.8042 • FAX 95L676J240 • w ABFcom
DCH HONDA
FIGURE 1
VICINITY MAP
E
a
N
tf7
6j
Lo
APPENDIX
I
I
I
I
I
a
I
11
I
I
I
RAINFALL
INTENSITY
-INCHES
PER HOUR
d
PIRA
LOpA
XU.gR,lETA
- TEpECULA
NORCO
PALX
SPRIN65
PERRIS
VALLEY
'
L Rr NCXO
CALIFORNIA
DURATION
MINUTES
FqEOUENCY'
DURATION
MINUTES
FRE QUENCY
DURATION
MINUTES
FREQUENCY
DURATION FREQUENCY FR EQUEMCY DURATi OM FREQUENCY
MINUTES MINUTES
<
10
YEAR
100
YEAR,
10
YEAR
100
YEAR
-l9
YEAR
100
YEAR
10
YEAR
X00
YEAR
IO
YEAR.,.
1D0
YEAR
5
6
7
6
9
10
31
l2'
13
lA
2.7T '
2.53
2,11
2.19
2.07
1.96
1.07'
1.79
1.72
1.08
4.16
3•79
7.51
3.29
7.10
2.94
Z•e0
2.6e
2.50 '
.2.48
5
b
7
0
9
10
11
12
17"
,lA
4.27 .,
3.80
3•48
3.22
J. 01
�®9
2.67.
2.54
2.43'
2.33
6.70
6.08-.
5.56
5.15
4�01�
0 52�_•
(f-.:52
4�'ce
1.07
3.00 .
7.72
5
.8-.
7
0
9
30
11
12,
17
14
2.04,
2.41.
2,,24.
2,09
1.98
1.38
1.79
1.72
1.65
1.59
7.70
3.46
3.21
7.01
2.04
2.69
2.57
2.40
2.37
2.29
5 .2.04 ♦.AO. 5'' 3.45 5.10.
0 . 2.38 4.&T 6 7.12 4.61 '
7 E,77 3.T5,„ T Z.AT 4.24.
6 Y.21 0 E.bT 7..94.
9 2.00 3.20 9 2.90 3.69
10 1.90.':•].1.0 10 �i1�.00"
11 1..97 E.90 11 L.24 ` .'J 0:
12 1.70 0.38 1L 2.13 - 7.15
r 13 1.71' 2..70 I] 2..04' 3.01
14 1.64 2.60 11 1.96 2.09
15
10
17
10
19
1,50
1.93
1.40
1.44'
1.40
E.00
E.42'
1.74
2.27
E.21
15
16
1T
10
19
1.84
1.0 P:-'
1.76.
1.71
1.68
2.79
2.89
'2:60'
2.52
2.45
15
10
1T
le
19
1,60-
1.55_
1.50:
1.46''
1:42
2.10.
2.32
2.25`
2.19
2.17
15L
16
1T
]0'
19
P.23
2.15
2,06
Z.01
1.95
7.58
3.40
7.32
3.22
3.12,�
15
Ib
17
Is
19
1.54
1.49
1.45
1.41
1.37,
2.21
2.14
2.03,
2.02
1.97
20
22
. 24
26
20
1.:36'
1,29
1;24
2.1B
1.14
2;154.'
204'
1.95
1.67
1.80
.22"
LO
26
29
L5J
1.10
1.79
1.34
2.26-,
2.15'
2.08
1.90
22`",
21.
26
28
1.32`"
1.20'
1.22
1.37
1.90=.'
1.98
1.02
1.70
20
22-'
2e-
26
28
1.e4
1T9 °
1.T0'
1:62
1:56
7..03 .
.2 6'
2.72
2.60
2.49
�-%•
20
22
-24
20
20
1.74
1.2B'
1.22
],10
1.13
1.92
1.87
1.T5
1.09
1.03
n ��
30
32
34
30
38
1,10
3.06
1.03
1.00.
,97
1.73
1.67
1.62
1.57
l.5']
30
32
34
76 -
30
1.29
1.24
I. ZO
1.17
1.17
.1.98-
1.84
1.78
1.72
1.67
30.
32
30.
36
38
1.13
1.10-
1.06
1.03
1.01
1.70
1.04
1.59
1.55
1.5A
30
32
71
76
78
1,49
1.14
1.39
1.74
1.3D
2,79
2.30
2.22
2.15
2.V9
30
32
74
70
38
1,10
1.00
1.03
1.00
,90
1.57
1.52
1.48
1.44
1.40
c�
U1
(n
40
45
50
55
60
.94
.09
,54
.00
,76
1.49
1.40
1.32
3.26
1.20
40
45
50
55
60
1.10
1.03
.97
.42
•e6
1.6E
1.52
1,11
1.76
1,30
40
45. -
50
55
60
,90
,92-
,BB'
•04
,80
(.47
1.39
1•31
1.29
1.20
40 '
45
50
55
00
3,27
1.18
1.11
`5
1. Oy'
2.02
1.69
1.70
1.60
1.60.
AO
15
50
55
80
•95
.90
.85
,BI
.TB
1:77
1.29
1.22
1:1�T;
1.12:
Q
A
q
65
70
75
X00
05
•73
:70
,68
.05
,63
1.15
1.11
1*. 0T
1.03
1.00
b§
70
75
e0
BS
.84'
.Bl
.78
.75
.T3
1.24
1.19
1.15
1.11
1.07
65
70
75
BO
e5
,7T
•74
,Tz'
•69
,67'
1.15
1,11
1.07
1.04
1.01
65
70
TS
00
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.9�1
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.85
.8
1.53
1.46
1.01
1,35
65
TO
75
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•72
.TO .1.00
•68
1,08
1.04
,97
O
2
1.31
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C:Iaes20001hydrosftVatscAI5-7910.RES
++.++...++++x ' x....+.......... +.x x++l++++x *...++++* .... *..... +++*++ RATIONAL METHOD HYDROLOGY COMPUTER PROGRAM BASED ON
CONTROL RIVERSIDE COUNTY FLOOD OL F wATER CONSERVATION DISTRICT
WC
(RCFOAD) 1978 HYDROLOGY MANUAL
(c) Copyright 1982-2000 Advanced Engineering Sottwaie (acs)
Ver. 1.5A Release Date: 01/01/2000 License ID 1264
Analysis prepared by:
AHF 4 Associates
14725 Alton Parkway
Irvine, CA 92618
DESCRIPTION OF STUDY *x u+++z++x+e+++u+xxx+++ +
++DCH HOMCA
Q10
+ DEVELOPED
e+.++e u e e ++.++++++++++e++++++:: «+++«+r a+e+++r++• x++r... x ++y+u+«++ee e
FILE NAME: 157910.DAT
TIME/DATE OF STUDY: 13:55 01/04/2007
_--------- _--- _--------- _----- _____________
USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION:
____________________________________________________________________________
USER SPECIFIED STORM EVENT(YEAR) z 10.00
' SPECIFIED MINIMUM PIPE SIZE(INCH) : 18.00
SPECIFIED PERCENT OF GRADIENTS(➢ECIMAL7 TO USE FOR FRICTION SLOPE = 0.90
10 -YEAR STORM 10-MINOT£ INTENSITY(INCe/HOUR) . 2.360
10 -YEAR STORM 60 -MINUTE INTENSITY(INCR/HOUR) - 0.880
100 -YEAR STORM 10 -MINUTE INTINSITY(INCH/HOURI - 3.480
100 -YEAR STORM 60 -MINUTE INTENSITY(INCH/HOUR) - 1.300
1 SLOPE OF 10 -YEAR INTENSITY -DURATION CURVE • 0.5505732
SLOPE OF 100 -YEAR INTENSITY -DURATION CURVE + 0.5495536
COMPUTED RAINFALL INTENSITY DATA:
STORM EVENT - 10.00 1-HOURINTENSITY(INCH/HOUR) = 0.889
SLOPE OF INTENSITY DURATION CURVE . 0.5506
RCFCRWCD HYDROLOGY MANUAL 'C' -VALUES USED FOR RATIONAL METHOD
NOTE: COMPUTE CONFLUENCE VALUES ACCORDING TO RCM1WCD HYDROLOGY MANUAL
' AND IGNORE OTHER CONFLUENCE COMBINATIONS FOR DOWNSTREAM ANALYSES
*USER -DEFINED STREET -SECTIONS FOR COUPLED PIPHFLOW AND STREEEFLON MODEL*
HALF- CROWN TO STREET-CROSSFALL: CURB GUTTER -GEOMETRIES: MANNING
WIDTH CROSSFALL IN- / OUT -/PARK- HEIGHT WIDTH LIP HIRE FACTOR
N0. (FT) (FT) SIDE / SIDE/ WAY (FT) (FT) (FT) (FT) (n)
' .•1 30.0 �• 20.06C 0.018/0.018/0?6
020 0 60 • 6
2.00 0 0313 0 167 0.0150
GLOBAL STREET PLOW -DEPTH CONSTRAINTS:
1. Relative Plow -Depth - 0.00 FEET
s (Maximum Allowable Street Flom Depth) - (Top -o£ -Cath)
2. (Depth)* (Velocity) Constraint . 6.0 (FT*FT/S)
ACITY
•+SIZE `O`PS WITH A*FLOW AM TRIBUTARY PIPE.
OR EQUAL TO THE UPSTREAM TRIBUTARY PIPE.'
+ FLOW PROCESS +FROM NODE f 1.10 TO NODE +1'20+IS*CODE +- 21
__________________________________________ -________--____-
..... TIONAL METF[OD INITIAL SDRAREA ANALYSIS ««<
...6.6.6-------= ---------- ....:..6.a------------------ .z.......----------
.:z
ASSUMED INITIAL SUBAREA UNIFORM
DEVELOPMENT IS COMMERCIAL
TO . R*[(LENGTH**3)/(ELEVATION CHANGE)]+'.2
INITIAL SUBAREA FLOW -LENGTH . 450.00
' UPSTREAM ELEVATION . 60.69
DOWNSTREAM ELEVATION . 45.13
ELEVATION DIFFERENCE . 15.56
TO . 0.303*[( 450.00**3)/( 15.56)]**.2 = 6.841
30 YEAR RAINFALL INTENSITY(INCH/HOUR) . 2.938
COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT . .8848
SOIL CLASSIFICATION IE 'C'
' +TOTAL A AONOFF(+F •*24
TOTAL AREA OFF (C 2.40 TOTAL RUNOFF(CFS) = 6.24
FLOW PROCESS PROM MOE 1.20 TO NODE 1.20 IS CODE . 1
' ...
------
=.....I...=------NMEWENT STREAM.FOR.CONFLUENCE.•.-.=....................
c TOTAL NUMBER OF STREAMS - 3
CONFLUENCE VALUBE USED FOR INDEPENDENT STRRAN 1 ARE:
TIME OF CONCERTAATION(MIN.) . 6.84
RAINFALL INTENSITY(INCR/HR) . 2.94
' + TOTAL*STREAM TE(CFS] AT CONTS+*_+*•+:+.e.e*++++.++:*e*
PEAR FLOW RATE (CFS] AT CONFLUENCE 6.24
FLOW PROCESS FROM NODE 1.30 TO NODE 1.40 IS CODE .* 21
------------------------------------------------ _------ _____________________
> »RATIONAL METHOD INITIAL SUBAREA ANALYSIS<n
ASSUMEINITIAL A
SUBAREUNIFORM
DEVELOPMENT IS COMMERCIAL
TO ((LENGTH**1)/(ELEVATION CHANGE.2
INITIALAL SUBAREA FLOW -LENGTH 120.000
UPSTREAM ELEVATION . 51.22 0
' DOWNSTREAM ELEVATION . 46.53
ELEVATION DIFFERENCE 4.67
TC 0.303* E F CONCENTRATION
4.67))+*.2 - 1.938
COMPUTED TIME OF CONCENTRATION INCREASED TO 5 MIN.
10 YEAR RAINFALLINTE(INCH/HOUR) . 3.491
RUNOFF
COMMERCIAL DEVELOPMENT RllNOFF WEFFICIENT = .8868
' Printed: 01/04/2007 01:56:01 PM PM Modified: 01104/2007 01:55:47 PM PM Page 1 of 3
I
CAaes26001hydrosilVatscAl 57910. RES
SOIL CLASSIFICATION IS 'C'
SUBAREA RUNOFF(CFS) 0.62
' 'TOTAL AREA'ACRESx 0.20*. TOTAL RUNOFF•--5-*•.x 0x12 * «e«.•
' FLOW PROCESS FROM *MODE ' 1.40 TO -NODE: 1.40 IS •CODE . **1 x
----------------------------------------------------------------------------
»».DESIGNATE INDEPENDENT STREAM FOR CONFLUENCE««
' ==...... =.......... L -===_f=_=_-_--------=====__=___....._=
TOTAL.OF
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
TIME OF CONCENTRATION(MIN.) . 5.00
RAINFALL IN1'ENSITYIINCH/RR) . 3.49
TOTAL STREAM AREA(ACRES) • 0.20
PEAR FLOW RATE(CFS) AT CONFLUENCE - 0.62
♦«--x*.--r......
a u...u*..........*...
*-**..ax..*=*x...
*..........xx.x«.
FLOW PROCESS FROM NODE 1_50 TO NODE 1.60 IS CODE . 21
»».RATIONAL METHOD INITIAL SUBAREA ANALYSIS.-<
' ASSUMED INITIAL SUBAREA UNIFORM
DEVELOPMENT IS COMMERCIAL
TC = K*[(LENGTH**3)/(ELEVATION CHANGE)j-*.2
INITIAL SUBAREA FLOW -LENGTH - 450.00
UPSTREAM ELEVATION = 57.00
DOWNSTREAM ELEVATION = 43.64
ELEVATION ➢IFFEBENCE • 13.36
TC • 0.303*[( 450.001•3)/( 13.36)7.42 - 7.053
10 YEAR RAINFALL INTENSITY (INCH/HOUR) 2.889
COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT = .8845
SOIL CLASSIFICATION IS 'C'
SUBAREA RUNOPP (CF57 2.30
' •-TOTALtAAEA (ACBExw x220«.0 .a•*•TOTAL' RUNOFF(CF5xx.••«::*.]0
FLOW: PR :5 FROM NODE * 1.60 •'DO NODE *'1.60 IS CODE*= • 1
»DESIGNATR INDEPENDENT STREAM FOR CONFLUENCE -c
--'AND COMPUTE VARIOUS CONFLUENCED STREAM VALUES'.-
1 =___. . .===a------2..===--- _________________________
;;;;ER OF STREAMS • 3
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE:
TIME OF CONCENTRATION(MIN.) . 7.05
RAINFALL INTENSITY(INCB/SA) • 2.89
TOTAL STREAM AREA(A(7RES) . 0.90
' PEAK FLOW RATE ((IFS) AT CONFLUENCE - 2.30
• CONMUSNC3 DATA
STREAM RUNOFF Tc INTENSITY AREA
NUMBER (CFS) (MIN.) (INCH/HOUR) (ACRE)
1 6.24 6.64 2.938 2.40
5.
' .•.0x22*** xt0. 62.•••• 00 3.491 0.20
7
3 2.30 7.05 2.889 0.90
x ..* * .. ..WARNING:***.•**.. x**.xxu xx..»x. -.xxx.xe
*IN MIS COMPUTER` PROGRAM, THE CONFLUENCE VALUE USED IS EASED
ON THE RCFCiWCI FORMULA OF PLATE D-1 AS DEFAULT VALUE. THIS FORMIBA
WILL NOT NECESSARILY RESULT IN TBE MAXIMUM VALUE OF PEAR FLOW.
' * RAINFALL' INTENSITY AND TIME OF-CONCENTRATION•RATIO
'x«.xx
CONFLUENCE FORMULA USED FOR 3 STREAMS.
' Printed: 0110412007 01:56:01 PM PM Modified: 01/04/2007 01:55:47 PM PM Page 2 of 3
* PEAK FLAW RATE TABLE *•
STREAM RUNOFF Tc INTENSITY
NUMBER (CFS) (MIN.) (IN(ZE/HOUR)
'
1 6.81 5.00 3.491
2 8.99 6.84 2.948
3 8.95 7.05 2.089
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
PEAR FLAW RATE (CPS) . 0.99 TC(MIN.) 6.84
TOTAL AREA(A(7RES) . 3.50
LONGEST £TOWPATH FROM NODE 1.10 TO NODE 1.60
450.00 FEEI.
*«x-xe«xx xx«xx:.uxx***x.xxx.x.a=e*wx*r u:ax»*ex:: xrxx«xx
FROM NODE 1_60 TD NO➢E 1.60=IS=CODE-----
exe*.*+x.xxx
'
.ADDITION OF SUBAREA TO MAINLINE�PEAK FLOW< -
----------
-'£IOWPROCESS
10 YEAR RAINFALL INTENSITY(INCN/HOUR) 2.938-
UN➢EVEIAPE➢ WATREEME3 RUNOFF COEFFICIENT .7476
SOIL CLASSIFICATION IS 'C*
SUBAREA AREA(ACRES) = 0.07 SUBAREA RUNOFF(CFS) 0.15
'
TOTAL ARSA(ACRES) J.57 TOTAL RUNOFF(CFS) = 9.14
TC(MIN) . 6.04
:
♦xu«•vx«u**xx.xxu»x.x*e*q:ex*x.exx.xx «xexxxxe.x.o oxxx*x
FLOW PROCESS FROM NODE 2.10 TO NODE 2.20 IS CODE
xxx««xx«
= 21
'
METHOD_ -NI INITIAL SUBAREA=ANALYSIS................-__........__
.=.,--6RATI0-AL
•-ASSUME➢=INITIAL SL----=.... =
DEVEAPMENT IS COM4ERCIAL
TC . Kx [ILEN4TH•x3)/(ELEVATION CEANGE))*•.2
INITIAL SUBAREA FLAW -LENGTH 330.00
UPSTREAM ELEVATION 52.92
'
DOWNSTREAM ELEVATION 44.90
ELEVATION DIFFERENCE = 8.02
TC - 0.303*[( 330.00 -*3)/( 8.02))-x.2 = 6.404
'
10 YEAR RAINFALL INTENS ITY(IIBCH/HOUR) 3.026
' Printed: 0110412007 01:56:01 PM PM Modified: 01/04/2007 01:55:47 PM PM Page 2 of 3
1
1
1
1
C:laes2000ydiosftlrafscxflS7910 RES
COMMERCIAL DSVEIAPMENT RUNOFF COEFFICIENT = .8051
SOIL CLASSIFICATION IS 'C'
SO£A££A RUNOFF(CFS) 1.34 -
TOTAL AREA(ACRES) • 0.50 TOTAL RUNOFF(CFS) 1.34
++FLOW *PROCESS *FROM NOD£2'20+TO+NODE +*:++2'20 ISxCODE
*=+»i
____________________________________________________________________________
aaa>DESIGNATE INDEPENDENT STREAM FOR CONFLUENCR--
TOSAL NOMBEB OF STREAMS = 2
CONFLUENCE VALUES USED EOR INDEPENDENT STREAM 1 ARE:
TIME OF CON CENTRATION(MIN.) • 6.48
RAINFALL INT£NSITY(INCH/HR) • 3.03
TOTAL SMEAM AREA(ACRESI • 0.50
PEAR FLOW RATE (CFS) AT CONFLUENCE • 1.34
FLOW PROCESS FROM NODE 2.10 TO NODE 2.30 IS CODE • 21
----------------------------------------------------------------
--RATIONN MEMO➢ INITIAL sUBAREA A30ALY5Is--
ASSUMED INITIAL SUBAREA UNIFORM
DEVELOPMENT IS COMMERCIAL
TC • R*[(LENGTE'+31/(ELEVATION CEANGE)J^.2
INITIAL SUBAREA FLOW -LENGTH • 330.00
UPSTREAM ELEVATION • 52.92
DOWNSTREAM ELEVATION • 44.34
ELEVATION DIFFE@ENCE . 8.5E
TC = 0.303'[( 330.00*'3)/( 8.58)7=+.2 - 6.397
10 YEAR RAINFALL INTENSITY(INCH/HOUR) - 3.048
COMMERCLAL DEVEIAPMENT RUNOFF COEFFICIENT - .8952
SOIL CLASSIFICATION IS 'C'
SUBAREA RUNOFF(CFS) = 2.70
TOTAL AREA(ACRES) = 1.00 TOTAL RUNOFF(CFE) 2.70
"FLOW *PROCESS •FROM *NODE :♦'*'+2.20•T0«NODE 2.30•IS CODE .«+1+«+:*....
»DESIGNATE INDEPENDENT 5'SREAM FOR CONFLUENCEc««
»>"a COMPUTE VARIOUS CONFLUENCED STREAM VALUES«.«
......................=-......-==---.........-----------.-------a..--.-----
TOTAL NUMBER OF STREAMS = 2
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
TIME OF CONCENTRATION(MIN.) - 6.40
RAINFALL IMT:IPSITYIINCE/FA) • 3.05
TOTAL STREAM AREA (ACRES) 1.00
PEAR FLOW RATE (CFS) AT CONFLUENCE - 2.70
«• CONFLUENCE DATA 'x
STREAM RUNOFF TO INTENSITY AREA
NUMBER (CFS) (MIN.) (INCH/HOUR) (ACRE)
1 1.34 6.48 3.0260.50
2 2.70 6.40 3.048 1.00
IN THIS COMPUTER PROGRAM, THE CONFLUENCE VALUE USED IS BASED
ON TAE RCFC4WCD FORMULA OF FLATS D-1 AS DEFAULT OALUE. TRIS FORMULA
WILL NOT NECESSARILY RESULT IN TEE MAKIMUM VALUE OF PEAR FLOW.
RAINFALL INTENSITY AMD TIME OF CONCENTRATION RATIO
CONFLUENCE FORMULA USED FOR 2 STREAMS.
+' PEAR FLOW PATE TA8LE *
STREAM RUNOFF TCINTENSITY
NUMBER (CFS) (MIN.( (INCH/HOUR)
1 4.02 6.40 3.048
2 4.02 6.48 3.026
COMPUTED CON UENCE ESTIMATES ARE AS FOLLOWS:
PEAR FLAW RATE(CFS) - 4.02 TC(MIN.) . 6.40
TOTAL AREA(ACRES) - 1.5o
LONGEST FLOWPATH FROM NODE 2.10 TO NODE 2.30 = 330.00 FEET.
r♦ x ♦*:*«u * * • xx:«++++x a x*-«+++««ee+*.*+»++««e+ee+«+«++e+x»»+uu
FLAW PROCESS FROM NODE 230 TO NODE 2.30 IS CODE . 81 -
_____________________
--ADDITION OF SUBAREA TO MAINLINE PEAK FLM--
..- ---------- ------------------- ..................................e.-----
10 YEAR RAINFALL INIENSITY(INCH/HOUR) - 3.048
UNDEVELOPED RATERSHED RUNOFF COEFFICIENT - .7522
SOIL CLASSIFICATION IS 'C'
SUBAREA AREA (ACRES) • 0.10 SUenncn RUNOFF(CFS) • 0.23
TOTAL AREA(ACRES) = 1.66 TOTAL RUNOFF(CFS) • 4.25
-TC(MIN-40
-- -----=
END OF STUDY SUMMARY:
TOTAL AREA(ACRES) = 1.60 TC(MIN.) = 6.40
PEAR FLAW RATE(CFS) = 4.25
1
ENO OF RATIONAL METROD ANALYSIS
Printed: 01104/2007 01:56:01 PM PM Modified: 01/04/2007 01:55:47 PM PM Page 3 of 3
' CAaes20001hydrosftVatscAl579100.RES
RATIONAL M£1'HOD HMWOIAGY COMPUTER P&OGRAN BASED ON
' RIVERSIDE COUNTY FLOOD CONTROL 4 WATER CDNSERVATION DISTRICT
(RCFCFWCD) 1978 HYDROLOGY MANUAL
(r) Copyright 1982-2000 Advanced Engineering Software fees)
Ver. S.SA Release Date: 01/01/2000 License ID 1264
Analysis prepared by:
RRF F AssoCiates
14925 Alton Parkway
Irvin , CA 92618
' •+r::++++ DESCRIPTION OF STVDY +*^+•+++++++,++r:++++««+
DCN AON➢A
0100
, r?EELOPED*„+r» «+++. •.+,,,+, *,+«, r,+.err+:++.++++•++„r„+++,+++•,«++..
PILE NAME: 1579100.➢AT
TIME/DATE OF STUDY: 13:48 01/04/2007
USER SPECIFIED HYDROLOGY AND HYDRAULIC MODEL INFORMATION:
----------------------------------------------------------------------
USER SPECIFIED STORM EVENT(YEAR) = 100.00
SPECIFIED MINIMUM PIPE SIZE(INCH) 18.00
' SPECIFIED PERCENT OF GAADIENfS(DECIMAL) TO USE FOR FRICTION SLOPE - 0.90
10 -YEAR STORM 10 -MINUTE INTENSITY (INCH/HDUR7 . 2.360
101YEAR STORM 60 -MINUTE INTENSITY(INCH/HOUR) . 0.880
100 -YEAR STORM 10 -MINUTE INTENSITY(INCH/HOUR) - 3.480
100 -YEAR STORM 60 -MINUTE INTENSITY(TNCH/AODRI - 1.300
SLOPE OF 10 -YEAR INTENSITY -DURATION CURVE 6 0.5505732
SLOPE OF 100 -YEAR INTENSITY -DURATION CURVE - 0.5495536
COMPUTED RAINFALL INTENSITY DATA:
STORM EVENT = 100.00 1 -HOUR LVTENSITY (INCH/HOUR) - 1.300
SLOPE OF INTENSITY DURATION CURVE - 0.5496
RCFCFW= HYDROLOGY MANUAL •C" -VALUES USED FOR RATIONAL METHOD
NOTE: COMPUTE CONFLUENCE VALUES ACCORDING TO RCFCAWCD HYDROLOGY MANUAL
' AN➢ IGNORE C=R CONFLUENCE COMBINATIONS FOR DOWNSTREAM ANALYSES
USER -DEFINED STREET -SECTIONS FOR COUPLED PIPEFLOW AND STREETPIAW MODEL*
HALF- CROWN TO STREET-CROSSFALL: CURB GUTTER -GEOMETRIES: MANNING
WIDTH CROSSFALL IN- / OUT -/PARK- HEIGHT WIDTH LIP RIES FACTOR
NO. (FT) (FT) SIDE / SIDE/ WAY (FT) (FT) (FT) (FT) (D)
' = 1 10 ,0 =20.06= 0 018/0 018/0.020 60,67 62,00 0.0313 1,167 00150=
GLORAL STREET FLOW -DEPTH CONSTRAINTS:
1. Relative Flow -Depth . 0.00 FEET
as (Ma . Allowable Street Flow Depth) - (Top -of -Cu b)
2. (Depth)*(Ve10CitY) Constraint - 6.0 (FT*FT/S)
•SIZE PIPE WITH A FLAW CAPACITY GREATER THAN
' .. OR+EQUALTO THE UTSTRIOkR. RTARY, PIPE.
_..
..............
..' ....*...*.....--
FLOW
**
FLAW PROCESSFROM NODE** '1.10 TO NODE 1.20 IS CODE = e21*
> »RATIONAL METHOD INITIAL SUUAREA ANALYSISe<
6_6e...6..66.6....666:.66666:66a.....v------666a:=..6666.6,6._........6..
ASSUMED INITIAL SUBAREA UNIFORM
OEVENGTK--R IS COK(ELEERCIAL
VATION
TC AL SUBAGTA MOR -ELEVATION C450.0 1`*.2
INITIAL SUEAAEA FLOW-LETIG60 = 450.00
UPSTREAM ELEVATION 6 60.69
DOWNSTREAM ELEVATION 45.13
ELEVATION DIFFERENCE 15.56
TO = 0.203•f( 450.00••3)/( 15.56)]+•.2 = 6.941
100 YEAR RAINFALL INTERUNOFFTCOEFFICI7 6 4.287
COMMERCIAL DECATION IS RUNOFF COEFFICIENT - .5990
SOIL CLASSIFICATION 2S •C"
N -F
' * SUBHRPArRU(ACRES+S•,+, .•.•r+s.+r»r«,.,.,.,•++„9.15
TOTAL AREA(ACREE) 2.40 TOTAL RUNOFF(CFS) 9.15
* FLOW PROCESS PROM NODE** 1.20 TO NODE* +1.20 IS MOE 1
-------------------------------------- -------------------------------------
»DESIGNATE INDEPENDENT STREAM FOR CONFLVENCE<cc
_-TIRE
TOTAL NUMBER OF STREAMS J
CIRELOF CE VALUES USED FOR INDEPENDENT STRENI 1 ARE:
TAME OF CONCENTRATION (MIN.) - 6.84
RAINFALL INfENSIT CAES/HR) 4.29
A
TOTAL STREAM ) 2.40
,.PEAR FLOW.RATE(,CF�,S)CAES+BATrCONFLU£NCE.r .r+:+•.15
.,«.+,r
FL PROCESS FROM NODE r 1.30 TO NODE 1.40*IS+CODE . 21
----------------------------------------------------------------------------
>aR TIONAL METHOD INITIAL SUBAREA ANALYSIS-
' ASSUMED INITIAL SURAREA UNIFORM
DEVELOPMENT IS COMMERCIAL
TC = Ar I(LENGS FLOW(ELEVATION CIDINGE)7".2
INITIAL SA FLOW -LENGTH 6 120.00
UPSTREAM ELEVATION = 51.20
' DOWNSTREAM ELEVATION = 466.-
53
ELEVATION DIFFERENCE = 4.67
TC . 0.303 -If TIKE F CONCENTRATION
4.67)]`•.2 = 2.939
COMPUTED TINE OF CONCENTRATION INCREASED TO $ MIN.
100 YEAR RAINFALL INTENSITY (INCH/FOUR) = 5.093
' COlWERCIAL DEVEIAPMENT RUNOFF =EFFICIENT = .9905
Printed: 01/0412007 01:52:49 PM PM Modified: 01/04/2007 01:48:01 PM PM Page 1 of 3
17,
' SOIL CLASSIFICATION IS `C• C:Iaes2000lhydresBGafscxll579100.RES;
SUBAREA RINOFF(CFS) • D.91
TOTAL AREA(ACRES) - 0.20 TOTAL RUNOFF (CFS) 0.91
+'FLOW PROCESS «FROM •NODE ***+1.40TO+NODE•*+** • 1.40IS+CODE•-<_.I
-- --+.++w+.•+r
---»DESIGNATE INDEPENDENT STREAM FOR OONFLUENCZc«-<
...............a........................................a................
TOTAL NUMBER OF STREAMS • 3
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 2 ARE:
TIME OF CONCTNSRATION(MIN.1 S.DO
RAINFALL INTENSITY(INCH/HR) • 5.09
TOTAL STREAM AREA(ACRES( - 0.2a
PEAS FLOW RACE (CFS) AT CONFLUENCE • 0.91
' r«♦reran r+-e..errrrreerrrr+r::++rr+er++re rrrre r+re+«ewer*-+»+rr«w:rrrr
FLOW PROCESS FROM NODE1_-50 TO NODE 1_60 IS CODE - 21
- _
»->>RATIONAL METHOD INITIAL SUBAREA ANALYSIS--<
' ASSIAff INITIAL SUBAREA UNIFORM
DEVESDPMENT IS COMMERCIAL
TC . E+((LEt,C -3)/(ELEVATION CHANGE)1 -.2
INITIAL SUBAREA FLOW -LENGTH 450.00
UPSTREAM ELEVATION . 57.00
DOWNSTREAM ELEVATION . 43.64
ELEVATION DIFFERENCE • 13.36
TC . 0.303•(( 450.00+•3)/( 13.16)(••.2 • 7.053
100 YEAR RAINFALL INTENB2IY (INCE/HOUR) • 4.216
COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT . .8880
SOIL CLASSIFICATION IS `C`
SUBAREA RIMOFF(CFS) 3.37
TOTAL AREA(ACRES) • 0.90 TOTAL RUNOFF(CFS) 3.37
FLOW«PROCESS< FROM.
NODE
-rrr**1.6O T0`NODE r_r_.+1_60'IS.
CODE ••+'1•r..-+..wr
--DESIGNATE INDEPENDENT STREAM FOR CONFLUENCS--c
-a>--AND COMPOTE VARIOUS CONFLIENCED STREAM VALUES -e
' TOTAL'NUMBER•OF STREAM 7 3 ..................=--------- ---------------
CONFIDENCE
----------- .CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 3 ARE:
TIME OF CONCENTRATION(MIN.) - 7.05
RAINFALL INTENSITY (INCE/EAT - 4.22
TOTAL STREAM AREA(ACRES) 0.90
' PEAR FLOW RATE(CFSI AT CONFLUENCE = 3.37
rr CONFLUENCE DATA ••
STREAM RUNOFF TC INTENSITY AREA
NUMBER (CFS) (MIN.) (INCE/HOUR) (ACRE)
1 9.15 6.84 4.207 2.40
2 0.91 5.00 5.093 0.20
rr+r.+r.»wr]r r.«r.0
5r+« 9.216 0.90
r+WAR1TINGr•r•UE USEMes BASE<«+++.w.wr..wr
IN•TBIS COMPUTER•ORMULAM,FTFL TS D-1EAS VALUE OVAL IS HAS®
WILLTHE T NECTCD FORMULA OF FLATS D-1 AS DEFAULT VALUE. THIB FORMULA
WILY NOT NECFSSAAILY RESULT IN THE MAYIMIM VALUE OF PEAR FLOW.
' *RAINFALL INTENSITY AND •TIME •OF CONCENTRATION RATIO
«•rr+rr:++<+..
CtlNFLIIENCE PORMUTA USED FOR 3 STREAMS.
• PEAR FLOW RATE TABLE +
' STREAM RUNOFF Tc INTENSITY
NUMBER (CFS) (MIN.( (INCH/HOUR)
1 9.98 5.00 5.093
2 13.18 6.84 4.287
3 13.12 7.05 4.216
' COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
PEAR FLOW RATE(CFS) . 13.16 Tc(MIN-) • 6.84
TOTAL AREA (ACAEs) . 3.30
LONGEST FLOWPATH FROM NODE 1.10 TO NODE 1.60 • 450.00 FEET.
e+++u««e.<e r+++u«++«r • •«e++r<ru o+++:r+rr+r r+r+<«+e ee r♦ rr+r: r r♦«e
FLOW PROCESS FROM NODE 1.60 TO LADE 1.60 IS CODE = 61
__________•________••__-____-_-____••___________•_•____________•_•
-----ADDITION OF BUBAREA TO MAINLINE PEAR FLOW««<
..----------- ......:.................... .----------- ................. .......
100 YEAR RAIAFALL INTENSITY (INCE/NOIR} 4.207
SOIL CLOP® WATERSHED RUNOFF COEFFICIENT • .7897
SOIL CLASSIFICATION IE •C`
SUBAREA AREA(ACS) 0.07 SUBAREA RUNOFF(CFS)
0.24
TOTAL AREA(A9.84 • 3.57 TOTAL AUNOFF(CFS) 13.42
TC(MIN) . 6.84
. r»r++<«r+wee.wr+r<+++:e+.«+w err+*<:<+«:«w«err rr r<r+«r«er+++++++w«•+r+.e
FLAW PROCESS FROM NODE 2.10 TO NODE 2.20 IS CODE • 21
-----RATIONAL MEITI0D IIfITIAL SUBAREA�YSIS--
................................................ .--------- ....... ...x.......
ASSUME➢ INITIAL EOBNIEA UNIFORM
nEVEta l4tFxr Is COMMERCIAL
TC E•[(LENGTA'r3)/!ELEVATION FAANGEI7'•.2
INITW. S08AREA FLOW -LENGTH • 330.00
UPSTREAM ELEVATION • 52.92
DOWNSTREAM ELEVATION . 44.90
ELEVATION DIFFERENCE • 0.02
TC . 0.303*(( 330.00••3)/( 8.02)1••.2 - 6.484
100 YEAQ EALNFAIY INIENSITxlINC31/9otnx) . 4.415
' Printed: 01/04/2007 01:52:49 PM PM Modified: 01/0412007 01:48:01 PM PM Page 2 of 3
C:Iaes20001hydros$Iratscx11579100. RES
COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT . .8892
SOIL CLASSIFICATION IS •C -
SUBAREA RUNOFF(CFS 1.96
TOTAL AREA(ACRES) . 0.50 TOTAL RUNOFF(CFS) 1.96
FLOW« PROCESSx FROMNODE
xx xx 2.20` TO«NODE `•«««•2.20 IS«CODE «.•«•1
----------------------------------------------------------------
»»-DESIGNATE INDEPENDENT STREAM FOR CONFLUENCS--
TOTAL HOMERS OF STREAMS . 2
CONFLUENCE VALUES USED FOR INDEPENDENT STREAM 1 ARE:
TIME OF CONCENI'RATION(MIN.) . 6.4E
RAINFALL INTENSITY (INCH/HR) - 4.42
TOTAL ETREAM AREA(ACRES) + 0.50
PEAK FLOW RATE(CFS) AT CONFLUENCE 1.96
«•FLOW PROCESS =FROM xMODE •«««x•2.10«TOxNODE xxxx xx2.30x IS' CODEx':x 31xxxxxxx xxx
----------------------------------------------------------------------------
»»-RATIONAL METHOD INITIAL SUBAocn ANALYSIS--
...___:__________________________:_____________________________________
ASSUMED INITIAL EDBAREA UNIFORM
DEVELOPMENT IS COMMERCIAL
TO - Kx[(LENGTH-*3)/ ELEVATION CHANGE)) -x,2 _
INITIAL SUBAREA FLOW -LENGTH . 330.00
UPSTREAM ELEVATION - 52.92
DOWNSTREAM ELEVATION . 44.34
ELEVATION DIFFERENCE . 8.58
TO . 0.303x[( 330.00x•37/( 8.58))^.2 + 6.397
100 YEAR RAINFALL INTENSITY(INCN/HOUR) - 4.448
COMMERCIAL DEVELOPMENT RUNOFF COEFFICIENT + .8893
SOIL CLASSIFICATION IS •C•
SUBAREA RUNOFF(CFS) 3.96
TOTAL AREA (ACRES) - 1.00 TOTAL RUNOFF(CFS) + 3.96
« ««««x« ` «
FLOWPROCESSFROM xNODExe xxxe2!20«TONODE2.30ISCODE +«««1««x«x««««
----------------------------------------------------------------------------
>» DESIGNATE INDEPENDENT 6TREAM FOR CONFLUENCR««<
-a>»ANU COMPUTE VARIOUS CONFLUENCED STREAM VALUES«-«
TOTAL NUMBER OF STREAMS . 2
CONFLUENCE VALUES USED FOR INOEPENDEMT STREAM 2 ARE:
TIME OF COINCCE]NNI"RATION(MIN.) . 6.40
RAINFALL IN SITY(INCR/HR) . 4.45
TOTAL STREAM AREA(ACRES) - 1.00
PEAK FLOW RATE(CFS) AT CONFLUENCE - 3.96
xx CONFLUENCE DATA xx
STREAM RUNOFF Tc INTENSITY AREA
NUMBER '(CFS) (MIN.) (INCH/HOUR) (ACRE)
1 1.96 6.48 4.415 0.50
2 3.96 6.40 4.448 1.00
xx MIS xx==xx PROGRM, THE x x•WARNINGxxVALUE USED, EASED xexxx:xxexxx
IN THIS CCMRWCDR PROGRAM, THE CONFLUENCE VALUE USED IS BAS®
ON THB T NECESS FORMULA OF PLATE D-1 AS DEFAULT pOLDE. THIE FORMULA
WILL NOT NECESSARILY RESULT IN TRE MAKIMUM VALUE OF PEAR FLOW.
xxxxxxexx.«xx •xxxx.xx♦>«a«xtxxxx«:«««:«.exxx««««««««xxv xx. x.
RAINFALL INTENSITY AND TIME OF CONCENTRATION RATIO
CONFLUENCE FORMULA USED FOR 2 STREAMS.
«« PEAR FLOW FATE TABLE -•
STREAM RUNOFF TC INTENSITY
ER
NUMB[CPS) (MIN.) (INCH/HOUR)
1 5.89 6.40 4.448
2 5.89 6.48 4.415
COMPUTED CONFLUENCE ESTIMATES ARE AS FOLLOWS:
PEAK FLAW RATE(CFS) + 5.89 TC(MIN.) 6.40
TOTAL AREA(ACRES) = 1.50
LONGEST FLOWPATN FROM NODE 2.10 TO NODE 2.30 = 330.00 FEET.
»xxx xxe xx a «««x.xv«rx«««««: x ♦«x.xx ♦r ax xe xxa««xx x.«xx exx x
FLAW PROCESS FROM NODE 2.30 TO NODE 2.30 IS CODE 81
____________________________________________________
-----ADDITION OF SUBAREA TO MAINLINE PEAK FLOW, -
100 YEAR RAINFALL IMINE ITV (INCH/NOOK) - 4.448
UNDEVELOPED WATERSHED RUNOFF COEFFICIENT . .7932
SOIL CLASSIFICATION IS C.
SUBAREA AREA(ACRES) + 0.10 SUBAREA RUNOFF(CFS) 0.35
TOTAL AREA(ACRFS) 1.60 TOTAL RUNOFF(CFS) . 6.25
TC(MIN) + 6.40
END OF STUDY SUMMARY:
TOTAL AREA(ACRES) + 1.60 TC(MIN.) . 6.40
PEAK FLOW RATE(CFS) = 6.25
END OF RATIONAL METHOD ANALYSIS
1
' Pdnfed: 01/04/2007 01:52:49 PM PM Modified: 01104/2007 01:48:01 PM PM Page 3 of 3
a'.
\ a
'
2 -yr
CENTRAL BASIN
0.05
0.25Pre-Project
i pre
'
10- r0.20
C=
Area 3.57 ac
i post
Vel(FPS)2-yr
C=
'
0.32
Precipitation
ea for 24" RCP
2- 10- 100 -yr
0.530.81 1.2
Effective Pre -Project Precipitation
2 -yr
10- 100- r
0.163
0.443 0.833
(ac-ft)
Pre -Project volM31
2 -yr
10- r
0.05
0.25Pre-Project
fl(CFS)2-yr
2- r 10-yr0.52
10- r0.20
1.25Post-Project
Velocity v--Q/A
12-yr0.17
1.01Pre-Project
Vel(FPS)2-yr
10- rr0.06
0.32
0.5
0.34
0.9
0.73
3.14 ft^2
EffeMPost-Project Precipitation
2-100 0.87
Post -Project volum:V=d*A
10 -yr
0.06 0.14Post-Project
J(ac-ft)2-
flow
2- r 10-yr0.52
1.25Post-Project
Velocity v--Q/A
12-yr0.17
10- r 100 -yr
0.40 0.72
SOUTHWEST BASIN
i pre
C=
Area 1.6 ac i post
C=
Preci itation Area for 24" RCP
100-
0.53 0.81 1.2
'. Effective Pre -Project Precipitation
2- 10- r 00 -yr
0.163 0.443 0.833
Pre -Project volume V=d'A ac -ft)
2- 10 -yr I 100-
0.021 0. 61 0.11
Pre -Project flow Q=CIA (CFS)
2 -yr
10-yrI 100 -yr
0.091
0.2411 0.45
Pre -Project Velocity v=Q/A (FPS)
2 -yr 10- r 100 -yr
0.03 0.08 0.14
u
0.5
0.34
0.9
0.73
3.14 ftA2
Effective Post -Project Precipitation
2-yr0.j11 00- r
0.20- o.as o.37
Post -Project volume V=d'A (ac -ft)
12 -yr I 10
1 00 -yr
0.031 0.06
0.12
Post -Project flow Q=CIA (CFS)
2 -yr 10- 100 -yr
0.23 0.56 1.02
Post -Project Velocity v=Q/A (FPS)
2 -yr 110 -yr 1100-
0.07 0. 181 0.32
1 Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
1 Parcels G, H, & I of LLA No. 03-0658
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Appendix D
Educational Materials
I
EMPLOYEE EDUCATION LOG
I
■
I
Permeable Pasemeot—?rad'viGNl mrmete wad
gsphal[ dont alltwvatuip;soal ban the pound
ti¢se sah¢s rely an scram dn6a m
divert urrvraiyed
and
mowmk o mak th
systems a0ow rahi and mowmeh m mak through,
dedeasing stcsnaatu rano[
)fah Baaels You mn
urgent rahrvztq, 4om .
wTh
o_.n
.
� lavm os gartlen areas
e_managedJo &mg 9peranpns ran resat o.. . ni
n and
p>abon
u[t.prehags[ylannmg to preva¢ wsion and lower costs.
agg�ng me[ho6s and egwpmerYt that mvumize so0 disNPoance _
anidesign ind trak pard ateaz and tack access mads w -
�,. sirzam-itessm� and avu�d d�sNrbmg the loresttlooc
ttuH steam crossings so rhat2hey mm mite erosion and phy ,iol
lite-reveg-ration of d=aced alai
ide naoval Phos for '-•
raNwatamcdlea..
the
x. .d. Rsu o .
gdud Raa frorn, i
:
7oeim4 areas or pavr?
arsai dente dner¢d
Into theseareas rather
aT
Erosron conuolz ;that areas'; saint
aessve amounts of sedimentar
roto the stnnnwatm systee
vJh�cles an leak NeL oil, and oth
_
that can be picked W by sbrrim',:
deposited mm localwaLerbo6.s
i - h_v D_ a
• IJrvert away Plum di
� .n
rear of
uposed arvas o! die m2Cvue2
- {,rteasg e2uv•
tracall sik fences. vehicle mud
u. -� Ytmyoi
t-geta[ive cone:. and othei se[
unsion convoLs and pmpedy
sep ..4y aheo assmma.
orb
Pru east s,5il erusori-by minimi:
distm :g'-�, a n _
_are=s during mns�ucdun Prof
and m icb bare areas as soon
.e
e_managedJo &mg 9peranpns ran resat o.. . ni
n and
p>abon
u[t.prehags[ylannmg to preva¢ wsion and lower costs.
agg�ng me[ho6s and egwpmerYt that mvumize so0 disNPoance _
anidesign ind trak pard ateaz and tack access mads w -
�,. sirzam-itessm� and avu�d d�sNrbmg the loresttlooc
ttuH steam crossings so rhat2hey mm mite erosion and phy ,iol
lite-reveg-ration of d=aced alai
ide naoval Phos for '-•
raNwatamcdlea..
the
x. .d. Rsu o .
gdud Raa frorn, i
:
7oeim4 areas or pavr?
arsai dente dner¢d
Into theseareas rather
aT
r r �
LOCAL SrvvrNING AGENCIES
IN RIVLRSIDE COUNTY:
M M M
City of Beaumont
(000)
13elarr Homeowner, Association
(909)
Gly of Henning -
(909)
City of Blythe
(Igo)
City of Couahollo
(700)
Coachella Valley Water District
(700
City of Corolla
(909
Desert Cather, CSAN61
(760)
F-aelern Municipal Water District
(Dog)
Llalnore Valley MWD
(900)
Fain Mutual Water Company`909
Itlyllwlld Water District
(909
,lurupn Coolmunlly Services Dist.
1009)
Lotto Henlnt MWD
(909)
Lon Lake Water District
(000)
Mach Air Force Base
(909)
ldlsvion Springs Wine, District
(700)
City of Polls Surings
(Too)
Rancho Caballero
(900)
Rancho California Water Dist.
(009)
Ripley, LISA UO2
(700)
Rubldoux Community Sorvlces DI,I.
(Dug)
Clly of Riverside
(g09)
Gilead Volley Club, Ino
(900)
Valley Sanitary DInirIcL
(700)
Western Municipal Water District
(909)
ACTIVITIES
Riverside County line two di alnoge syelems - sanlhtry
sewers slid storm drains. The storm drahl systaln la
designed to prevent flooding by carrying excess
relnwater away from alreels. , - It's nut designad to bee
waste disposal system. Slnoe the storm drain system
•t ,"• does not provide for water treatment, It often serves
the unintended function of 1rarLvporling pollutants
directly to ourwatorways.
086-7484jrb� � #
6563247 G.y�rl(,rlN.l
''y
'I
(909) 350-505x,
tlAznRDOU3 WASTE DISPOSAL:
(909) 350-5055
'P
y Non-stormweler discharges such as
waehweler from outdoor
277-1474x- _ lqr,,�.
r
I
generated
clonning projects often transport harmful
060-700a
(d�
pollutants Into storm drainu and our local
32g-6440
323-9242'4r
Ig
waterways. Polluted runoff conlamleai9e
local wolorwaya end poaas a threat to
700-9272ra ��yI"JItgp
570-4101
rr
groundwater resources.
SPILL RESPONSE AGENCY:
'Ii4
HA2 -MAT:
(909) 350-505x,
tlAznRDOU3 WASTE DISPOSAL:
(909) 350-5055
TO REPORT ILLEGAL DUMPING OR A CLOGGED ii'
STORM DRAIN:
1-600.506.2555 h,
10I• arST4 :, o, vv ;i; sl:. Ohl' act'.}owremjos Ilr Ploy rtran
'4'h. Ivl; lea,., a - I C(Ihnr'::s5 CulscLhluu, and'.
'..�trN"�] ��,.mlller:• Irpdv Aiaclimlr:;n fur"
..:, ,, ,vwldeJ�P alas l•"pr!vt �
Unlika sanitary sewwrt stem ;lra;os aril for
001olACred to a Ventmenr pent- dray ncW alr e.'rlx
to ourlocei sl•sams.:Ivor% en(I laaOs
Soaps, dogreasem, automotive fluids. litter, End a hosl
of other materials washed off buildings; sldswalks,
plazas, parking areas, vehicles, and equipmentean all
pollute ourwalerweys.
rll Ir.
Since preventing pollutier Is m.Ich easter, slid less cosily than oleaning ;.p "after 111A foci," the :
. Cities and CcuNy of Rl�erade Storm WelarrClea'1 Water Prtnectlon Proprilm Hfcpns revlden's and
ltuainnanes orpollul!orr(pevantlon artivieos nm:h as Lhose rlascnbne. In lois mirphlot. _ )
' 1 I
'File Chine and County o° Rlvorulde have adoctad ordinances for Dior'nwaler rna'legement and
dleohargo control, Ir. Htx:afdahca with ofa[a ntld fedora! la'N. lhosa 700"1 6111('*M1WUIer OrdlDanC04
til:rAhlt. 1:he discharge cfwastes Into the stun"dra;n syslanl Or khat nvrtncs rnmtaltr. This Incudes
non-Cvmwa;ei lsecharges COeta:nlny oil. grease C!OtF.fganle, r. egreaeel'e, !rash, Dr C91er wa51s I
c'laaarlats.
PLEASE NOTE: Tho discharge of pollutants Into the street, gutters, Storm drain syatom, or waterways -
wlthouL a fteglonal Water Quallty Control hoard permit or wolver- la efrl cfl y prohfb/ted by local ordinunoos
and el ate and federal law.
M M
Ido . . . Dispose of small amounts of washwater from cleaning
building exteriors, sidewalks, or plea onto landscaped or unpaved
surfaces provided you have the owner's permission and the discharge will
Ip
notcause fl000ding or nulsence problems, or lbw Into a storm drain.
Do NOT... ... DlecFal'ge large 9man nl'8 GrlhEee lyp940f Wa91.Wn:el'
urro lo•Idscaned areas ar nor' where water may run to a street or anon,
dism. Waelawwe-trom on,nincr rlonrrng may be umnped to it sewer line
^,:It 4acllic porniss•orf from It's loon, smvering agency,
Do . . . Check with your local sowering agency's policies and
requirements concerning waste water disposal. Water from nhony
outdoor cleaning activities may be 000eptable for disposal In the sewer
system. See the Ila( on the back or this flyer for phone numbers of Iia
towering ngencias In your oras.
00 NOT... Pour hazardous wnslea or lox c mntanalt- Inrc Iho
VCur oral' a: 5ewe- sy5'um . proper% olsoose of it i -mend. Myon in
rr.1L•1 ettmtocl the local sewe-;ng agorcyi 'ry`e agency will tall, you whs(
types ulfquid waslas can lie accecred. .
I)Q . Understand trial venter (wi(hout soap) used to remove dust
from clean vehicles may be discharged to a" skeet or storm drain.
Washwater from sidewalk, plaza, and building surface cleaning may
go Into n street or alone drain If QL L of the following conditions ara mel:
1) The surface being washed Is free of residual oil steins, debris and
slmllor pollutants by using dry aleontip methods (sweeping, and
clean trig any oil or chemical spills with rage oro Ther a bsorbent ma terlals
bolero using water).
2� Washing is done with water only- Iii seal] or olhor cleaning malirinls.
df You hove trot used the water to remove point from surfaces during
Doclearing.
DY'N
o oT... Disposeofwnteraonb.oing sosp oranyothartype of
ulanning ogeid.nto a sloh'.n dra,n or water bony. ThlstsadlreclvIc!ellancf
snr"e a-Idto• local regciaaoos. Because wastewater from cleaning
parking areas or roadway» rrnnally contains mstaliic breko poo duo;, oil
a^d e:hnr uo;cnwliva'?trios, It ahoulek never be cllsoharged :o n moat, glider.
c'scum 0 -air
Do . . Understand that mobile auto delallers should dives
woshwater to landscaped or dirt areas. Note: Be aware that soapy
wsshwater may adversely affecb landscaping; consul( with the properly
owner. Residual washwalor may remain on paved surfaces to ovaporalo;
sweep up any remohting reslduo. If there to sufficient water volume to reach
the elorrn drain: collect the runoff and obtain permission to pump It Into the
sanitarysewer. Follow local sewer Ing ogency's requirements for disposal.
Dp�
p..Yo NOT. Dispose of lsn ova• cleaning agents loft ;he gutter,
slorm uroln or stintary sower.
Regarding Cleaning Agents:
If you must use soap, LIDO blodegi odablelphosphale free cleaners. Avoid use
of petroleum based cleaning products. Although the use of nontoxic cleaning
products Is strongly encouraged, 0 understand that geese products can still
degrade writer quality and. therefore, the discharge of these producta Inst
the street, gullets, storm drain
system, or waterways I..4 prohibited
by local ordinances and Ilia Slate
Weser Code.
Note: When cleaning surfaces with a high pressure weshor or stoat
cleaning methods, additional precautions should be taken to prevent the
discharge of pollutants Into the alarm drain system. These two methods of
surface Ole anbig. as compared to Iha LIDO or a low pressure hose, can
remove additional materials Ihot can contari lnele local waierweya.
OTHER Tips TO HELP
PROTECT OUR WATER...
SCREENING WASH WATT
A dtorgUgn dry cleanup before 'washlcg iv,,W.out
soap) surfaces such Ile Uuil041ci e)(feriors Intl decks
without loose pallet, sidewalks, or plata areas, sha:nd
bar sufficlanr ro proferf storm Arains. However, If nay
debris (aoiido) could enter stator drams o- "omnin It,
the gutter at street after cioaning, washvvxer s^bund
f!rslease :hrougl: a'20 nosh" orCnor sc�oe^ to ra.cn
the solid material, which should then to disoaaed a(
'n the crash.
DRAIN 1NL(T PfiQ EGT 0 I
CONTAINING & COLLECTING
WASH WATER
® Sand bogs can be used to crenae a barr,er incrand
storm droln Inlets.
* Plugs or rubber mots can be used Ira femporartl)r
seal storm drain opouings.
® You can also use vacuum bourns crmkvn•m,pl
pacts. or ten-.p'orary borms Io. keen wash write'
away Win the sireet, guller or sic! n' dram
EQUIPMENT AND SUPPLIES
Special Itlalar11115 suer es absorborlm stonr ;va:r
plugs and seats, srnall sump pun-ps, and v(Iruur:'
booms are available Iron, many vendors. For snore
Information check catalogs such as New P,g ,.600
466-4647), Lab Satiny Suonly (DOO-356.12-T83), CGF
(600-565-9966). andVV.W.Grelncler(000.994.9;174;
or cell the C:eanlng Cculpment Trade Ass9clnllor
(800-W-0111) or the Powe, Wanhors of Not -d
Anrerica (UQD-399-PVVIJA)
r r■ r r r r r r IMI!
lIm
.,,o, e .ro'� tho Cer oral'ndVe6'.al
Stu m water Pon -i: ccl-tact.
S: we VVaw R(IPeu•Caa (;onlroI 9Onrd t S W RCB )
e•'.YaM awT'L, GFi,£Ovi or, at you
i..e•r;lonal aV;y;eC;un�•:y Cnmrel scald YiL lgCl3 ).
5A aAlta ROU 311 I°)
[all'OTIva T,.Yei
5'97 Wil, S:reot. Ste. 500
n'va-aloe, CA 91.501-'33'391
tU091 701-1131
sar Diupe Rogon t91
iT i 1 Claremont Mona GIVd. SIe A
9,tn Dlr•.;^ "4 ;12124
,r• y • 4ti i -2952
F.kor Beare Ra;l on 1,71
t:-. .brr•�I rp >4 ..Un
'�IJ,;ianr.i.5;
SPILL RaaPONaE AOENCY:
HA2 -MAT: (909) 368.51
IIAznndous WA8TE DISPOSAL: (909) 356-6(
n ECY C LINO INPO GMAT ION: 1 -8U0 -366-$A
TO REPORT ILLEOAL DUMPING On A CLOOOED
STORM DRAIN: 1-800-506-11
'r o. f,r nddlUonnl bro(xoroe or, obtaln In'ore
n::+hfro.'8venjen ail:v-L'm Call.
IC• , VOC-1-11
1z
Rknrmae Coorta grntxw,ry .al:nowledyny the SI
VJn•a." euair. . Cors(!E16m] amt :ne Anivi'Lar Pul
r, or.y auo:.rec.:. 5r(yTn lynler O;Ianly'.a6h force
�y:nrOl-I::IL'a9 Qre. GUp in L -.:y I:IRChtlfe.
Riverside County has two drainage systems - sanitary sewers and storm drains.
The slomt drain system Is designed to help prevent flooding by carrying excess
rainwater away from streets. Since the storm draln system does not provide for
water treatment. It also servos the
unintended function of transporting
pollutants diroully to our waterways.
Unlike senilmy sewers. storm
drains are not connected to e
treatment plant -they flow directly
to our local stroams, rivers and
lakes.
In recent years, awareness of the need
to protect water quality has Increased.
As a result, federal, state, and local
programs have been established to
reduce polluted stormwolor discharges to
our waterways. The emphasis of these
programs is to prevent slornwater
pollution since it's much easier, and less
cosily, than cleaning un "after the fact."
In 1987, the Federal Clean Water Act was amanded to establish a framework for
regulating Industrlal stormwater discharges under the NPDES ponnitprogram. Ir.
Callromla, NPDES permits are Issued by the State Water Ra5ourcus Ccntrol Bosrd
(SWRCB) and the nine (9) Reglonal Water Quality Control Boards (RWQCB). Ill
genoroi; certain industrial facilities and manufacturing operations rousl obtain
coverage under the Industrial Activities Stone Water General PermIt if the type of
facilities or operations falls Into one of the several categories described in this
brochure,
M = M mI M
I
Fo'Iewfng are 1fg�lgr_}l(-�(�grjpt[gtl,R of the
industry calsgodas types that ere regulated by the
rrluatnal Activldos Storm Water 08nma, Penult.
vo.Jr local Roglcn Water Qual ty Control
Board hr deten-nine if your fardlily'operaWn
•scloires cu oaroge under tie Perms.
-i nnr Iii en aUa zt, ce vert —mina cludiri
•i};p;.;y 'eyiy�,?r -Ilflnbfa CCUh'.g, DerrOoklm
t'•.�[ i,.,asr>✓:are pie ivfactunng. seem elsclrlc
r•caar .aenerat+r,n. rue: mining; mineral reining
ar,J pn?caseing: ere rnining acid drasaing; and
aopllalt enlusloo;
^D FAC,lllie9 C'e69iflod 09 heT'ber -jail woUf)
aratdc:a :ewer, wood allche- Cab'cetaipilo.
Dauer, 0nil capermoan: mills ollan)cel procluc."
!dxcaw 6ama Dhermacuuhcal arid olotoglcal
umdicts): neirole,:m arid ace' OrodoCls- leather
wedueuon and uvdsols: alone, clay and glans
C,'r.c)ue,t9, priory metal 9-dustries: :dal'valod
91r-' W'a• mgoo1 era❑ a'Ttl 50at building and
•� �.: CIMe ❑r ilei:V6 111114'0 Opel"nuena and
pas arplelra;r:n p%:iduct•on, prmeselrg. ci
tl eatinunt ooerellariC
-i I-Inzardous waste traal•ne-,: storago or
U1sp0a e. felosldes,
dumps that rucerre u -nave recelvea any InduaalBl
waste, unless there Is a new uvildylng :xnd Use
aUCh as al pelf CCUrsa, perk. etc.. anJ there is no
discharge assodated with the landfill:
i Facilities 174:nlvo! In the racypllnit of
matunsia. Inc'hdnil matal scrap yards.: batlary
recialriers. salvage yards, and aulrnnotl le
Jurdryaros:
-) 51earrl clectrictiow,ergenorating facWaes,
fadlldos t^til generate sterni for doOde power by
GDI'1{?UadC1i''
-9• Transponution 1110110es Itlel have Valk 0
lnainranaroo shops, fueling facilllles, oqulpm0nl
claamrp eperril.W ls. or elraOft dalcwa uVe1 aliens.
Th.9 Inde dos admol bun mated?nonan fou-htles
ope-a led by a aclmol dls lnctl:
� i�H'wnya ireainlHr,tfGCl'ItINn-;
-b 1-tic-Ilhes that have areas wh lio,nnalotial
handling equipment up OCC+illes, row materials,
IDlernlOUlate products, finai arudocls; wastu
materlols, by -produces, or industrial rtlacn nary
are enpesed to store wafer.
Mow do 1 obtahl coverage under the
Industrial Activities Storm Wafer General Permlt7
r • n po-^tato- `;'n y,",nn::al flag:or„: t^enter Q�mllly Cartrol 9cnrd IlateJ rl lila uncle
'rile'=tateWelar Resuuaes ConmelecanJ ISWRCGI. FlUbmitaaomplolnd NoUliocrinlonl
r_1111 x:s ^Tec aid tie o0r•eproce fee p6250 or 1500 ro ale SWRCD, Facilities must aubmR an NOI
:'.1ri t3 �! dans pour tc heg.nn•ng sal?re(!on. ODca yuu 8uhmlt inn NOI. ane Stale Doard wit rnr❑ yc)f a le Car
a.'i,x?vdedging : ecslpl of yo:a NO. and will eee:gn your reciaty a westo alsenarge Identification number (VVDID
N(:] VOUN'llt a'aL'aCe'4H01 arruel+eo filling. These u•!i.nga shoWd roughly wino da with lea date the State
Soard processac yrar nr genal NC. sub'�lua!,
i. Tho facility ^luat admnate any non-stormwWor d,sotlal-goo or obtain a aepa•ate notmit ror mrch
d,eCharges.
2. The faciNly mual devnioll and nnplemOnt a Storm Water PoCchcn Prevention Plan i5WPf-•Pl, The.
SWPPP must to airily Poul Ctrs u: U0110 spite if! at rriny ba Bxpoe 9U to (110111)Water. 01106 the 9C orrNa lir
po9dtnnls hake beenIdandrled, tile. lacl;lty onerator Minn dfivelcn and o1clei,ant Dent h'r.+natpr•en'
Pre.-4ces (NIIIJu) to mmtmiie or prevent pollaloo runoff
Gu!dnrcn hl umparalg 8 SbVPPfe is ovelloble from a docuplent pmpaned by the Calironna star,” Walsr
Quality 7d sh Forcl, ceded the Cplfforniu Storm'Nofer Best Managerrlarll Praclrce Hendhoe.l
U. 1'tla fauilhy must r'evtrlop and implement a Monitoring Pre(frvm: teal Includes celluuc:ng visual
ocaeNa•Jons aur) coll0di rip asmales of the faetlhy s slornl Water rNSCnmgee assec,a)6n will IndJsd81
activity Tile Gan 01Wl5cir^n 11 ra JJlreabink lila anely'Ois de conducted by a latioralory tnflHa oarare d hV:he
Stale of C011furnla.
4. Tiro faolllty must aubn,a :o :!x3 Ftaglonnl Goord, every July 1 an amoral :nport'quit Includes the recoils of
,In monitonrlg rrogrerr,
A Non -Storm Water Discharge Is... any
dlscrlargu to a 91om1 n)nirl st,slarr. Iha; l0 not
,composed enGraly of seine vvalaC Thn iabw�hg
iron-sfunn we.:r.o mschu'ges an; u,nhurizou by fhs
eanolnl Formic Any pydmpt flushhlg: cotable
wn!an svurcas. Including potable water misled to
Ina operation. in,51nfenance. or lesbng of pofaWo
water sy.annns; d fmnng fountain were:'
8;fno4phenu Cendapsplas Including refdgara0on.
mfr condloonlng. still co:nplossvY corldensaf0;
Ldgnalun drainage' inndacapo wafering. spnngs-
non-crnlumalaled gmund ly8;0l: roundevon or
fooang drainage; aa! ^8, warer horlvi Don where
[hH Pea N'aterS 21!6 dlscllargao beck Into the sea
watersowre.
A BMP Is , r . e fuawifua, pmens, va!vni'
of"SlrilplLVo:,secllomdI co(heppPu(aptMnionrof
a storm water discharge. SMP3 may lreltrda
amla)a lip/1-RhUflUmr n'IO11104 such as Pood
da,.seheapilig. Stair triperng and ;.vaveB'ce
s aNmerlarlce. Addrllonaby, B410s maY hlcfude
arra•.fdmf mod(ricntions such an !less:&Unvcr of
Damps. canopies oraeairronr oanb P' fir g sehrrr
nus(ns, vii;vara: sapnromrs, efc.)
WARNING: 771019 am 31017071701W Pelta/165 run nun-campllruma: a minimum Ma of 10.000 for falling to obtain panne
coverage, and, uplo, i10.00operdny, Pei vloln0on plus i10porgallon urdischar0e In excess or 1,000 pal/ons.
M M M M M
M = M M M
Cloanin' It.Bight ...
Four scop and was'l water In;o file mop sink
c, (town floor drains . not into gullers.
ausys.
oal'klmg lots or
3 G.Grll- aral'1.
YSrdrn F'ISV l
o::.lipneni Only
v"e.re'1
:Cnlle:::fid [g
ll -e rawer systern with an approuriate
o%walar sena'ator. Also. avo-d washing
lalchon mats, gnrbage containers, and other
Renis -r areda where wastewater Is likely to
new Into a'slorrll (Ira n.
Watch Out For Spills .. .
fzi, ap.':cleanup Don'thoee
dowry cutalde spills.
614 tJse rags or
abs orhuns such as
cel :Icer mW then
`nor l,ll f dlapose ur In the
1 III garbage. or handle
-- 1 -- as hazardous wasla
,l as aporopraui. IL
'Flit ir..
I'IEIGHU9HI}'. rilbp Lha
A�;t� �"'-'2i+-..�s'9 area Wlt•r n Rilrl•'nl:rrl
11��w�� arrnanl ofwalor.
Proper Storage and
Disposal ...
Oener(il rleansra.Tloor cleaners, so:vgrte,
and detergents often
contain toxic substances.
Read labels carefully and
Stora and dispose of these
nroddctspropelly.
REMEMBER: Don't Uuow
talde waste Into:he trash
or Into a storm drain. To
repot- toxic solll call 91'I.
• ,l
FC&l' •matron on
hazardws waste plot( -up
call 1909) 350-5055.
Grease and Oil
hlandlo and dispose of grease properly. Seve
uses cooling grease and oil fol• recycling In
tallow bins or sealed containers. Never pour
grease Into a otrik, floor dials, durripoler or
storm drawl.
Watch out for. U�
and report to 1
management, .
bverflDweltJ
grease
dlte•ceplofs. ll
Call f909j 351--r :72
for disposal r
info-nallon.
How 'Bout That
Dumpster .. .
Keep dumps:er and loading dock araes clear.
Control litter by sweeping - don t hoso down
the area. Replace
leaky dE,r.:psterr,
rind keep lids
closed to keep out
reinweter.
Use Water -Friendly
Products ...
Whenover possible, purchase water-based
cleaning products. Look for pronucts
labeled "nun -tax.(),"
'11on-polr0leunl Cased,'
'u1nalonfo-frog,'
•'phosphate-froo:
and `perfume -T1 us.
cr'•eaddy
blodogrztdable..
Everyone contributes a little to the problem of stormwater pollution. Now it's time for all of us to become part of the solutions
Outdoor/Sidewalk
Areas
Sweep uo food panicles, cigarette btilis. and
trash from odtdoor dWng areas be`re
llnsrlg or steam cleaning.
Don't eke toxo bleechne
or detergents when -.
you pressure wash�r I
culuoor dining ! s
areas. ar7a•1ceg�.
or surroundir.
sidewalit areas. -
You may be already rrnplemenr,ng fonfj;: l
rho OMP& prescnbed in this bmcr.vrv.
However, if you discover any pafenhal
problenz. areas, planes cons/derustnif one c;
more of tho recomiren;le d 8MP S.
Also, please note fiat tno Ni Counf•r
Envtronrnenral Health Dsperfinent w'il
nlcnrtor potenrlal sources c,1 sl'c`rrrmarer
P0111.16011 activities dung regularlyscheduled
inspgcUonr, ofloorl srrvicg facvltias. LfHeaRH
Oenar'frne,ii staff observe acpw'Jes wh uti
roti✓ be c:mtribuUrlg to sa;vowarer poduVa;,
Suggestions wi't be ptclvhted and.''or :se c!
prescribed O.MPS ILsred vi tris imichore w;.'
be offoird
t c
I�J IIPIfrJi'G�I
�l`sb'i?iii.."-Li:�iL.yll`ilr'i'�i��,'��'�!'Y.iililh
For irforriaaon Cil-closad-lucfi' suPPliel
r.-, faCy'Gin(LJdspOslll vendors. Cun(aul:
County of Riverside
Heath Services Agency
DLWMI HnWl of Environmental Heallh
of (909) 3665055.
SPILL RESPONsr AGENCY:
HAZ-MAT: (909)358-50551
ALTER 5:00 P.M.: (909) 3585245 OR 911M
RLCYCLI14G AND HAZARDOUS WASTE
DISPOSAL: (909) 358-6065)
TO REPORT ILLEGAL DUMPING ORA 'r
CLOGGED STORM DRAIN: 1-900-506-2555
to c•:ner nnDuuwl ynynnlmr uWwllles.
The Cities and County of Riverside
SlunnWaler/CloonWa(er Protection Progrant
1-300-506-2555
,a Wesly ,druinmlly nov,mmalml u0 611,14, (
�Al". 111V' tntsogwu llmwa.^ and the
1.6r A.P99"Is SWrmenl9r Munaa¢men• ❑nne,Ior,
•:uv,xe;n p••rvxuw iN.'�n omtirury
R,vers:de County gas 1,vo drasaoGo eystarns - san';a•y sewers end storm dra:rts. The smrrr
drain System Is dcSlgnou LO help prevent flooding Lly carrying excess ralnwa'ter a,may fr'Cm
I Skeels, 4inco tha corm drain system noes vol prOvido fur vu<ller iroalmar.l, i? else sc{ ve!s the
un)neridedfuncdon of transporting pollutants dlroctly w ourwaterwoys.
UnlUre sanllwy sewers, storm drams
are not connected to a 8 eatrnont
plant - they flow directly to our
local strveRls, dears and lolfes.
Rain enc •haler n. �off'rom aulomotP✓e uhds and
hUfil'IeseGS can carry DOIIUIart materia into slo-m
drains. Exampies of pellulants Include Gil and grease
from care, copper and asbestos 'rom wom brzlke
linings, zanc f•om inns. and :wfto from spilled fluids.
Stonrlwaterpollutlon causes as much as GO% of our
water pollution problem. It Jeopanllzes (Ile quallty of
our waterways and poses a thivat to groundwater
resources if pollutants percolate through sell.
Since preventing pollutlun ,s moch easier, and less coolly. Wan Clearing up "39er the iaa ' the Clliee.
and County of Riverside SLornnWe[Gr/CleanWarer Pruteotiorl Progrem informs residents and
businesses on peUutlun prevention activities such as the Best k1anegemen: or<aclicas (18MPsl
described In tills pan•phlet.
Thu Cities and County Or Riverside have adopled ordlnar.cos fur stormvwaler nlonagamum and
discharge control In accordance vv:lh stale and redural aw, these lova: stonnwaler urdhances
L)[51J71aJ�lhodiscnorgeorwaetesln[omestunndra.nsyslamorioca!surracoxa!o-s Thisircudea
discharges containing oil. antifreeze, gasouna ana other waste rr.atorlals.
PLEASE NOTE: A common sto;mwslu' pollution plabiern essoclated whit
aulornoava shops and bdsiressea Is the hosing down of service bays, Parhlri f and
other areas. Often, this oclivlly flushes p011ulanYS lntc the Slain draat oyslenf. T;:e
disolaorgW of pollu.a:rls Is aerlcliy probfbfteef by local urdlrances a, id stn:e aro
fedoral regulations.
1. Changing Automotive Fluids
o 7as•gnale an area away kern storm or
aaritary drams tc change eutol^alive 4[.ids.
a Cdloc;, separate, wo mcvcla motor ol,
arl'r-oaze. Vaaamlaaloc llUld and gea'oll.
lu DiAn Lake fled aac oder nun-; ecyGatlas
,nlc a props^UUn:ahlaralyd na+die
as a hazardot.n waste.
a Use a raclelor
Til
.Fanta al'.I'(1Yai.11.
2. Working on Transmissions, Engines,
and Miscellaneous Repairs
9 Kosp a d'ip part or a Pads lues-r-mmoc.
cLrtariar Urlde' Vohlc.ea tc calm Volds
lleroved y%Junc;p noses, ansc-ewaltwa. of
Challua pa-ta.1C :Ants a dratPocted leaks.
Preventing Leaks and Spills
•leo'•; so't's r.% owv:y'nv and "''o r0 dnu carx
,.Itrn .•Q'1 nlc'�:he"` :C a r'OV;o' +e'.Cla ^l
oflen!ney a -a relf-^i.,ll
!2Cll!1'101y Che.Ch eCUICrn E'rli IC w pe up spills
and repair'eO S.
Plane Isrpe pans or all. Ir9arable pnneLlo
Dean uhdel wrec*o'd liars.
Drain all fl:,da '-r:n w-eUkeo voNe.ea or
'Part6 oar's yodlte11por a'te.
4. Cleaning up Spills Kr"�
e _Aeon .,P small up lla l'[t e(�,-.
ey;i r
e Reel, dry cronoruert mntodels andlUr o
wsl; Cry vacdum clser'er on r'.and fol'rad-alzed
grille
® Cr.•nlain arge spl;ls hmoodlately, blodkor shUl
Dlf floor a'lu paadnq lot dralns inn nutty the
aulhontles. '
a Treln ernployaa5:0 be fo:rlll;cr wl!fl hazaruolla
spill respoese P;3119 Slid an'vrgercy
procodtn'os.
0, Identify and Control Wastewater
Discharges
o Ensure that elhip sWaa real i'ocr drrilin are
mrinlctvU lc rte sonl:ary sewer. Chad( with
Me local sewer nuUlorcy regaTJ:ng pe,lrlang
or ether-cquirorrenls.
e Poslelt:ns to prevent dlsoosal cf Cgold,wa6tus
Into sanitary eralon
0. Fueling Vehicles
a Crean -do minor spills, will: a r
dr{ abao•ben:, rather then gNLEAIIEO
allowing them In evaporate.
Dlspoue (if the absorbent oil ill
a nay hazardeua wants.' i1
e Use a damp cloth S'A a
doa,p mop to keop the area
Clean teller Clan a -lose cr e '
wolmdo. V9
7. Removing and Sterling Batteries
o Store oaderlea Ie Coors. on an open rac4.
e Relurh Used hmeriss in a 1:allery vendor
e Conlaln aacnad hade0ou to u•even:
hozardeba Salle.
AM
IM M M M
0. Cleaning Parts
a Cleat. parrs a a selr-
conlained unit. solvent sink
or parts weaker in p'averli
solvonla aro gron5a faith
anler!ng a sewer n^ slonn
drain Donna W or.
U. Metal Grinding and Finishing
9 Carol I motel fit 0�51n an ondrood uuk n- nn a
tarpoupn.
o Sweep 91n1g else to Prerenl washing metals
Inlo floor drills
10. Storing and Disposing of Waste
o tioro recyclable and non-rocycJnMo 'n'oste
separately
a Placo I.quld wasto it' zordo:r-a or od'enw,sal
wlimn a hemled or seconder? :on!ala'nent
Mae.
a Cover outdoor storage moos to plevanl
contact wilh reit. water.
p Ca.len: killed on.'!$ for delweiyto a setup rnelel
dealer,
11. Selecting and Controlling Inventory
p °urdtane rvcydatAe or ton-tcxlcmalenals.
e Select 'cloyed -loop" euppllers and purrlisso
suppiisa In bunt.
M
12. Outdoor Parking and Auto
Maintenance
e Treat outdoor atony Its all axtenstirn t, Voir
service hays or avoid using alrogelhor
y Sweep -up Irish anC din from oudoor oa Mig
aria main nnance areas. Do no: hooe ccwn
aress. AI! non -storm water discl'anaes aro
prohibited.
s/ Ura'n wo-k areas to a oanitsry oral:' 'alher
than a atone drain Contact ll'a =V Va1ve:'
aulho-i:y !n dslonrina if preVeaonent 'e
required.
13. Washing Vehicles, Cleaning Engines,
and Other Steam Cleaning
a For occasional col extencrcivaning. roWi—inze
Ire water -used and divert mmol" to lardscneec
areae, Neerdlg li outor:he s:ant wall,.
p VVasr. ve'Jclas wllh bmilogradabla,
pbon ohelo-free daletger,t.
p Make sura no waste" star fan, engfneurparls
cleaning or steam clea"rng la ulscaerga;
w,iefe I: -nay flaw to a street. cd:tor or siert•
drato
14. Clasning Work Areas
W Sweep or vaciuni Vitt erlOa rear fr@y'Jo:`7v
O Damp trot: wary, nese - re llrc: boos c000ll
work arena into the stro, r or p,:ae-
a Do not pull clop water Imil ir'" PNitkip .Vl.
mreat, po Iter or storm drnIn
m Use non-lcxlc wnorevsl
poaa'ble.
Please remember:
DPtf IVI S
n 1,s illif It "d$�il a+' 1 r ,
M AM
i
• (
'
r
r br' n In.. Snnllun'
In r•xldc('rmlharmohuen dndnn cxlxlrna-xra<rn.:, II Am
U yr b 9
• 1 r r ......nvmm h I d girt bl rev<N
gnanv nm cumrcrwd In Inamlul I Innu.l nl Ih. x Andrl
Hood In, lm rerrdnpeseenn ralnn nlrr mvav 1rame1.relx...11 Jos, N r%nuerl Is. I
'",
Inmuwn I frcilllrumlwm\fll'denlpned In use n'nxt<dh1uh.1 gnlxnl.
Ylro r•11r1 IwIII hrr'Ir walrrlut; ellemel I1 in Irl hafxl, 0 .... ilenI el'o...... 11111 rr1t1.11 nl<Illlp) Airs
ABOP's are L'luecd I lot iduy Weekend,
Iron, rhnll Idem v IN nnxra 1.11.1 Orr .hit'. n•Pinv¢ bixin, are" ulrh a bmmI. nnrl ON., . P1r4
up 1• . oris mal dlryoom ul'h. mol rr.e mrxu ennedrnv. lin 1111111111-bvnnhnu onnlu.
In Rynrrf I/lrpnl.,lunn Amin Abryurrf. mer....nlrnnrra•Nul srrrlrrx, nr to oe...in odditLuml
zhmu slight pn/lpdonpre,rndon bt irrrmirle"; lrarr roll 140-1e6-1.155
Pedley ABOP: 0951 Ven Buren Blvd. +Rlverelde+92509
I
HAZARDOUS MATERIALS MANAGEMENT DIVISION!
HOUSEHOLD HAZARDOUS WASTE IADOP
ABOP Silts C ,Ilum Antifrueze. Sollerles. 0:1. and Late; Parol
1, ( >
=]rV Conditionally Exempt Small Quantity Generator (CESQG) rT
I
What Ia a CESQG 7 Businesses Thal generale 27 gallons or 220lbe. of hazardous wosle, or 2.21be of extremely
hazardous weals per month ere called CESQG'.. Businesses are inquired to use a licenced
hazardous waste hauler to menifa.l and transport their waste. The most common CESOG'a era painter.. pilot .hops,
auto shops. bulldare, churches. schools. non-pmlll group, and property managers
What Is the CESQG Program? This Program Is a hazardous waste pith -up disposal service for eligible
bminesseelnon-prolll orgenlzallona In the County of Riverside. This Program provides small quantity
genarelon with a lapel and cllordable way to dispose of their weals with all legal documenlellmi po0ded as pad of the
source.
How do I gal the w.muoT To avenge gp appointment far the CESQG Program. call 1 (6001952-6506.
A disposal fee will be charged based on the type and amount of waste.
411411'111'%I Y ttlll'IJ• I IInvI,
1!11 II11,\'-JN•,
RI\•Ii IlTllll. CA v±gt!JNn
11
v
ABOP's ure open Saturdays 9:00 AM to 3:00 PM
5
ABOP's are L'luecd I lot iduy Weekend,
d
Pedley ABOP: 0951 Ven Buren Blvd. +Rlverelde+92509
I
Palm Springs* ABOP: 3000 E. Ale)o Rd. +Palm Springs }92202
Murrieta ABOP: 25315 Jefferson Ave. +Murriela +02362
1, ( >
=]rV Conditionally Exempt Small Quantity Generator (CESQG) rT
I
What Ia a CESQG 7 Businesses Thal generale 27 gallons or 220lbe. of hazardous wosle, or 2.21be of extremely
hazardous weals per month ere called CESQG'.. Businesses are inquired to use a licenced
hazardous waste hauler to menifa.l and transport their waste. The most common CESOG'a era painter.. pilot .hops,
auto shops. bulldare, churches. schools. non-pmlll group, and property managers
What Is the CESQG Program? This Program Is a hazardous waste pith -up disposal service for eligible
bminesseelnon-prolll orgenlzallona In the County of Riverside. This Program provides small quantity
genarelon with a lapel and cllordable way to dispose of their weals with all legal documenlellmi po0ded as pad of the
source.
How do I gal the w.muoT To avenge gp appointment far the CESQG Program. call 1 (6001952-6506.
A disposal fee will be charged based on the type and amount of waste.
411411'111'%I Y ttlll'IJ• I IInvI,
1!11 II11,\'-JN•,
RI\•Ii IlTllll. CA v±gt!JNn
11
v
oN
E
o
illy
— nt
N n
��-r
11�11qq
•� p
ITAF
F^ x h
U
Q
0
01,:��•n; r.:•:1�:1.3 .(I r.
Sponsored by Rlverelde County Wads Management Dopmlmenl
Hour. of Oparalian 10:00 am to 2:00 pm
COLLECTION MAY BE CLOSED DURING INCLEMENT WEATHER
I A9usn0a Fire Station, October 0. 2004• June 11. 2005 and Oalober S. 2005
Cottonwood Fire Station - 44222 gags Road. north of Hwy 79
Ansa Transfer Station: Sspl.la, 2004, Mor.12, 2005, Sept. IT, 2005. and Deo.3, 2005
40320 Terwllllger Road on the Anze Lendllll properly, mouth of Hwy 371 antl edI... in to the Cahullle Reearvellon
i D.s.d Canter Landfill: Fobmary 3, 2005
17-991 Kaiser Road. north of 1-10 and west of Highway 177
r 1 Meoce II Landfill, October 23. 2004, May 21. 2005 and Oclober 22. 2005
I 05.260 gen Ave. approximately Iwo miles anal of Hwy 111 and north of the Ballon Sao
Pine. Fle(Tr.neler Station: November 0. 2004, May 7, 2005 and November 5. 2005
Southern and of Floor, Fiala Road
For Information call (051)400-3200 or www.rlvcowm.or9
I
1
[1
1
j
Extended Detention Basin TC -22
Design Considerations
■ Tributary Area
■ Area Required
s Hydraulic Head
Description
Dry extended detention ponds (a.k.a. dryponds, extended Targeted Constituents
detention basins, detention ponds, extended detention ponds) J Sediment A
are basins whose outlets have been designed to detain the J Nutrients •
stormwater runoff from a water quality design storm for some ✓ Trash
minimum time (e.g., 48 hours) ponds,
allow particles and associated ✓ Metals
pollutants to settle. Unlike wet these facilities do not have A
a large permanent pool. They can also be used to provide flood ✓ Bacteria e
control by including additional flood detention storage. J Oil and Grease .
J Organics
California Experience Legend (Removal Effectiveness)
_Caltrans constructed and monitored 5 extended detention basins o-- Low— ®— High -
in southern California with design drain times of 72 hours. Four
of the basins were earthen, less costly and had substantially e Medium
better load reduction because of infiltration that occurred, than
the concrete basin. The Caltrans study reaffirmed the flexibility
and performance of this conventional technology. The small
headloss and few siting constraints suggest that these devices are
one of the most applicable technologies for stormwater
treatment.
Advantages
■ Due to the simplicity of design, extended detention basins are
relatively easy and inexpensive to construct and operate.
■ Extended detention basins can provide substantial capture of
sediment and the toxics fraction associated with particulates.
■ Widespread application with sufficient capture volume can_ - A
provide significant control of channel erosion and enlargement _ Cai;torm
caused by changes to flow frequency relationships resulting storvvater
from the increase of impervious cover in a watershed. aualit'
Association
L of 10
January 2003 California Stormwater BMP Handbook
New Development and Redevelopment
www.cabmphandbook.com
i
TC-22 Extended Detention Basin
Limitations
' ■ Limitation of the diameter of the orifice may not allow use of extended detention in
watersheds of less than 5 acres (would require an orifice with a diameter of less than o.5
inches that would be prone to clogging).
' ■ Dry extended detention ponds have only moderate pollutant removal when compared to
some other structural stormwater practices, and they are relatively ineffective at removing
' soluble pollutants.
■ Although wet ponds can increase property values, dry ponds can actually detract from the
value of a home due to the adverse aesthetics of dry, bare areas and inlet and outlet
structures.
Design and Sizing Guidelines
■ Capture volume determined by local requirements or sized to treat 85% of the annual runoff
volume.
i■ Outlet designed to discharge the capture volume over a period of hours.
■ Length to width ratio of at least 1.5:1 where feasible.
i■ Basin depths optimally range from 2 to 5 feet
■ Include energy dissipation in the inlet design to reduce resuspension of accumulated
sediment
■ A maintenance ramp and perimeter access should be included in the design to facilitate
i access to the basin for maintenance activities and for vector surveillance and control.
U Use a draw down time of 48 hours in most areas of California. Draw, down times in excess of
' 48 hours may result in vector breeding, and should be used only after coordination with
local vector control authorities. Draw down times of less than 48 hours should be limited to
BMP drainage areas with coarse soils that readily settle and to watersheds where warming
may be determined to downstream fisheries.
Construction/ inspection Considerations
■ Inspect facility after first large to storm to determine whether the desired residence time has
' been achieved.
e When constructed with small tributary area, orifice sizing is critical and inspection should
' verify that flow through additional openings such as bolt holes does not occur.
Performance
i ractices can be to reduce the flood hazard associated
One objective of stonnwater management p
with large storm events by reducing the peak flow associated with these storms. Dry extended
detention basins can easily be designed for flood control, and this is actually the primary
i purpose of most detention ponds.
Dry extended detention basins provide moderate pollutant removal, provided that the
recommended design features are incorporated. Although they can be effective at removing
J
2of10
California Stormwater BMP Handbook January 2003
New Development and Redevelopment
www.cabmphandbooks.com
'
Extended Detention Basin TC-22
because
some pollutants through settling, they are less effective at removing soluble pollutants
are available on the effectiveness of dry
of the absence of a permanent pool. Several studies
extended detention ponds including one recently concluded by Caltrans (2002).
The load reduction is greater than the concentration reduction because of the substantial
is clearly beneficial to surface
'
infiltration that occurs. Although the infiltration of stormwater
receiving waters, there is the potential for groundwater contamination. Previous research on the
effects of incidental infiltration on groundwater quality indicated that the risk of contamination
'
is minimal.
There were substantial differences in the amount of infiltration that were observed in the
On approximately 40 percent of the runoff
'
earthen basins during the Caltrans study. average,
entering the unlined basins infiltrated and was not discharged. The percentage ranged from a
high of about 6o percent to a low of only about 8 percent for the different facilities. Climatic
local table elevation are likely the principal causes of this difference. The
'
conditions and water
least infiltration occurred at a site located on the coast where humidity is higher and the basin
invert is within a few meters of sea level. Conversely, the most infiltration occurred at a facility
the climate is much warmer and the humidity
located well inland in Los Angeles County where
is less, resulting in lower soil moisture content in the basin floor at the beginning of storms.
Vegetated detention basins appear to have greater pollutant removal than concrete basins. In
the Caltrans study, the concrete basin exported sediment and associated pollutants during a
'
number of storms. Export was not as common in the earthen basins, where the vegetation
appeared to help stabilize the retained sediment
}}
Siting Criteria
Dry extended detention ponds are among the most widely applicable stormwater management
'
practices and are especially useful in retrofit situations where their low hydraulic head
requirements allow them to be sited within the constraints of the existing storm drain system. In
addition, many communities have detention basins designed for flood control. It is possible to
facilities to incorporate features that provide water quality treatment and/or
'
modify these
channel protection. Although dry extended detention ponds can be applied rather broadly,
This section
designers need to ensure that they are feasible at the site in question. provides
basic guidelines for siting dry extended detention ponds.
'
In general, dry extended detention ponds should be used on sites with a minimum area of 5
the size can be on the order of 0.5 inches. On
'
acres. With this size catchment area, orifice
smaller sites, it can be challenging to provide channel or water quality control because the
small storms becomes very small and
orifice diameter at the outlet needed to control relatively
thus prone to dogging. In addition, it is generally more cost-effective to control larger drainage
'
areas due to the economies of scale.
Extended detention basins can be used with almost all soils and geology, with minor design
soils such as sand. In these areas, extended
'
adjustments for regions of rapidly percolating
detention ponds may need an impermeable liner to prevent ground water contamination.
The base of the extended detention facility should not intersect the water table. A permanently
wet bottom may become a mosquito breeding ground. Research in Southwest Florida (Santana
'
et al., 1994) demonstrated that intermittently flooded systems, such as dry extended detention
'
January 2003 Califomia Stommwatu BMP Handbook 3 of 10
New Development and Redevelopment
www.cabmphandbook.com
TC -22 Extended Detention Basin
ponds, produce more mosquitoes than other pond systems, parficulazly when the facilities
t remained wet for more than 3 days following heavy rainfall.
A study in Prince George's County, Maryland, found that stormwater management practices can
increase stream temperatures (Galli, 1990). Overall, dry extended detention ponds increased
' temperature by about 5°F. In cold water streams, dry ponds should be designed to detain
stormwater for a relatively short time (i.e., 24 hours) to mini,nize the amount of warming that
occurs in the basin.
I
1
I
1
1
1
I
Additional Design Guidelines
In order to enhance the effectiveness of extended detention basins, the dimensions of the basin
must be sized appropriately. Merely providing the required storage volume will not ensure
maximum constituent removal. By effectively configuring the basin, the designer will create a
long flow path, promote the establishment of low velocities, and avoid having stagnant areas of
the basin. To promote settling and to attain an appealing environment, the design of the basin
should consider the length to width ratio, cross-sectional areas, basin slopes and pond
configuration, and aesthetics (Young et al., 1996).
Energy dissipation structures should be included for the basin inlet to prevent resuspension of
accumulated sediment. The use of stilling basins for this purpose should be avoided because the
standing water provides a breeding area for mosquitoes.
Extended detention facilities should be sized to completely capture the water quality volume. A
micropool is often recommended for inclusion in the design and one is shown in the schematic
diagram. These small permanent pools greatly increase the potential for mosquito breeding and
complicate maintenance activities; consequently, they are not recommended for use in
California.
A large aspect ratio may improve the performance of'detention basins; consequentl} the outlets
should be placed to maximize the flowpath through the facility. The ratio of flowpath length to
width from the inlet to the outlet
should be at least 1.5:1(L:W)
where feasible. Basin depths
optimally range from z to 5 feet.
The facility's drawdown time
should be regulated by an orifice
or weir. In general, the outflow
structure should have a trash
rack or other acceptable means
of preventing clogging at the
entrance to the outflow pipes.
The outlet design implemented
by Caltrans in the facilities
constructed in San Diego County
used an outlet riser with orifices Example
sized to discharge the water
quality volume, and the riser
overflow height was set to the design storm elevation.
Figure 1
of Extended Detention outlet Structure
A stainless steel screen was placed
4 of 10
California stormwater BMP Handbook January 2003
New Development and Redevelopment
www.cabmphandbooks.com
1
Extended Detention Basin TC -22
around the outlet riser to ensure that the orifices would not become clogged with debris. Sites
either used a separate riser or broad crested weir for overflow of runoff for the 25 and greater
year storms. A picture of a typical outlet is presented in Figure 1.
The outflow structure should be sized to allow for complete drawdown of the water quality
volume in 72 hours. No more than 50% of the water quality volume should drain from the
facility within the tted with a valve so th
discharge from the first
asin can be halted m case of an accidental spill the watershed. at
1
11
3umrnary of Design Recommendations
(1) Facility Sizing - The required water quality volume is determined by local regulations
or the basin should be sized to capture and treat 85% of the annual runoff volume.
See Section 5.5.1 of the handbook for a discussion of volume -based design.
Basin Configuration — A high aspect ratio may improve the performance of detention
basins; consequently, the outlets should be placed to maximize the flowpath through
the facility. The ratio of flowpath length to width from the inlet to the outlet should
be at least 1.s:1(L:W). The flowpath length is defined as the distance from the inlet
to the outlet as measured at the surface. The width is defined as the mean width of
the basin. Basin depths optimally range from 2 to 5 feet. The basin may include a
sediment forebay to provide the opportunity for larger particles to settle out
A micropool should not be incorporated in the design because of vector concerns. For
illways must be sized to
online facilities, the ring the
tihp land ar event andergency pto safely pass the flow fromrloo-year
vide i.o
foot of freeboard during 5-Y
storm.
(2) pond Side Slopes - Side slopes of the pond should be 3:1(H:V) or flatter for grass
_- _stabilized slopes: Slopes steeper than 3-.1 (H -.V)
must be stabilized with an - - - —
appropriate slope stabilization practice.
(3) Basin Lining g _ Basins must be constructed to prevent possible contamination of
groundwater below the facility.
(4) Basin Inlet — Energy dissipation is required at the basin inlet to reduce resuspension
of accumulated sediment and to reduce the tendency for short-circuiting.
(5) outflow Structure - The facility's drawdown time should be regulated by a gate valve
or orifice plate. In general, the outflow structure should have a trash rack or other
acceptable means of preventing clogging at the entrance to the outflow pipes.
The outflow structure should be sized to allow for complete drawdown of the water
quality volume in 72 hours. No more than 50% of the water quality volume should
drain from the facility within the first 24 hours. The outflow structure should be
fitted with a valve so that discharge from the basin can be halted in case of an
accidental spill in the watershed. This same valve also can be used to regulate the
rate of discharge from the basin.
The discharge through a control orifice is calculated from:
January 2003 California Stormwater BMP Handbook
Sof 10
New Development and Redevelopment
www.cabmphandbook.com
TC -22 Extended Detention Basin
Q = CA(2gH-Ha)0.5
' where: Q = discharge (ft3/s)
C = orifice coefficient
A = area of the orifice (ft=)
' g = gravitational constant (32.2)
H = water surface elevation (ft)
Ho= orifice elevation (ft)
' Recommended values for C are o.66 for thin materials and o.8o when the material is
thicker than the orifice diameter. This equation can be implemented in spreadsheet
' form with the pond stage/volume relationship to calculate drain time. To do this, use
the initial height of the water above the orifice for the water quality volume. Calculate
the discharge and assume that it remains constant for approximately 10 minutes.
' Based on that discharge, estimate the total discharge during that interval and the
new elevation based on the stage volume relationship. Continue to iterate until H is
approximately equal to Ho- When using multiple orifices the discharge from each is
' summed.
(6) Splitter Box - When the pond is designed as an offline facility, a splitter structure is
used to isolate the water quality volume. The splitter box, or other flow diverting
i approach, should be designed to convey the 25 -year storm event while providing at
least i.o foot of freeboard along pond side slopes.
(7) Erosion Protection at the Outfall -For online facilities, special consideration should
be given to the facility s outfall location. Flared pipe end sections that discharge at or
near the stream invert are preferred. The channel immediately below the pond
outfall should be modified to conform to natural dimensions, and lined with large
stone rip applaced over filter-cloth.—Energy dissipation -maybe -required to -reduce -
flow velocities from the primary spillway to non-erosive velocities.
' (8) Safety Considerations - Safety is provided either by fencing of the facility or by
managing the contours of the pond to eliminate dropoffs and other hazards. Earthen
side slopes should not exceed 3:1(H:V) and should terminate on a flat safety bench
' area. landscaping can be used to impede access to the facility. The primary spillway
opening must not permit access by small children. Outfall pipes above 48 inches in
diameter should be fenced.
' Maintenance
Routine maintenance activity is often thought to consist mostly of sediment and trash and
' debris removal; however, these activities often constitute only a small fraction of the
maintenance hours. During a recent study by Caltrans, 72 hours of maintenance was performed
annually, but only a little over'7 hours was spent on sediment and trash removal. The largest
' recurring activity was vegetation management, routine mowing. The largest absolute number of
hours was associated with vector control because of mosquito breeding that occurred in the
stilling basins (example of standing water to be avoided) installed as energy dissipaters. In most
' cases, basic housekeeping practices such as removal of debris accumulations and vegetation
management to ensure that the basin dewaters completely in 48-72 hours is sufficient to prevent
creating mosquito and other vector habitats.
6 of 10 California stormwater BMP Handbook January 2003
New Development and Redevelopment
www.cabmphandbooks.com
Extended Detention Basin TC -22
Consequently, maintenance costs should be estimated based primarily on the mowing frequency
and the time required. Mowing should be done at least annually to avoid establishment of
woody vegetation, but may need to be performed much more frequently if aesthetics are an
important consideration.
' Typical activities and frequencies include:
■ Schedule semiannual inspection for the beginning and end of the wet season for standing
' water, slope stability, sediment accumulation, trash and debris, and presence of burrows.
■ Remove accumulated trash and debris in the basin and around the riser pipe during the
semiannual inspections. The frequency of this activity may be altered to meet specific site
conditions.
' ■ Trim vegetation at the.beginning and end of the wet season and inspect monthly to prevent
establishment of woody vegetation and for aesthetic and vector reasons.
■ Remove accumulated sediment and regrade about every 10 years or when the accumulated
' sediment volume exceeds io percent of the basin volume. Inspect the basin each year for
accumulated sediment volume.
Cost
Construction Cost
The construction costs associated with extended detention basins vary considerably. One recent
study evaluated the cost of all pond systems (Brown and Schueler, 1997). Adjusting for
be with the equation:
'
inflation, the cost of dry extended detention ponds can estimated
C=12.4Vo.76o -----
and
where: C = Construction, design, and permitting cost,
V = Volume (ft3).
Using this equation, typical construction costs are:
'
$ 41,60o for a 1 acre-foot pond
$ 239,000 for a 10 acre-foot pond
$ 1,380,000 for a loo acre-foot pond
Interestingly, these costs are generally slightly higher than the predicted cost of wet ponds
(according to Brown and Schueler, 1997) on a cost per total volume basis, which highlights the
facility
'
difficulty of developing reasonably accurate construction estimates. In addition, a typical
constructed by Caltrans cost about $16o,000 with a capture volume of only o.3 ac -ft.
'
An economic concern associated with dry ponds is that they might detract slightly from the
value of adjacent properties. One study found that dry ponds can actually detract from the
value of homes adjacent to a dry pond by between 3 and 10 percent (Emmerling-
perceived
Dinovo, 1995)•
'
January 2003 cavomia stonnwater BMP Handbook 7 of 10
New Development and Redevelopment
www.cabmphandbook.com
1
TC -22 Extended Detention Basin
Maintenance Cost
' For ponds, the annual cost of routine maintenance is typically estimated at about 3 to 5 percent
of the construction cost (EPA website). Alternatively, a community can estimate the cost of the
maintenance activities outlined in the maintenance section. Table 1 presents the maintenance
' costs estimated by Caltrans based on their experience with five basins located in southern
California. Again, it should be emphasized that the vast majority of hours are related to
vegetation management (mowing).
' Table 1 Estimated Average Annual Maintenance Effort
Equipment & Cost
Activity Labor Hours Material($)
' Inspections 4 7 183
Maintenance 49 126 2282
' Vector Control o 0 o
Administration 3 0 132
' Materials - 535 535
Total 56 $668 $3,132
1
References and Sources of Additional Information
' 1 Brown, W., and T. Schueler. 1997. The Economics of Stormwater BMPs in the Mid -Atlantic
i
Region. Prepared for Chesapeake Research Consortium. Edgewater, MD. Center for Watershed
Protection. Ellicott City, MD.
Denver Urban Drainage an3-l7c—,oTControl-gis c .1 UrbarTStum—Drainage Gs terra —
Manual—Volume 3: Best Management Practices. Denver, CO.
' EmmerEng-Dinovo, C. 1995. Stormwater Detention Basins and Residential Locational
Decisions. Water Resources Bulletin 31(3): 515-521
' Galli, J. 19go. Thermal Impacts Associated with Urbanization and Stormwater Management
Best Management Practices. Metropolitan Washington Council of Governments. Prepared for
Maryland Department of the Environment, Baltimore, MD.
GRY, 1989, Outlet Hydraulics of Extended Detention Facilities for the Northern Virginia
Planning District Commission.
' MacRae, C. 1996. Experience from Morphological Research on Canadian Streams: Is Control of
the Two -Year Frequency Runoff Event the Best Basis for Stream Channel Protection? In Effects
' of Watershed Development and Management onAquatic Ecosystems. American Society of
Civil Engineers. Edited by L. Roesner. Snowbird, UT. pp. 144-162.
Maryland Dept of the Environment, 2000, Maryland Stormwater Design Manual: Volumes 1 &
2, prepared by MDE and Center for Watershed Protection.
httn�//www.mde.stateandus/environment/wing stormwatermanual/index.html
8 of 10 California Stormwater BMP Handbook January 2003
New Development and Redevelopment
www.cabmphandbooks.com
1
Extended Detention Basin TC -22
>
�1
Metzger, M. E., D. F. Messer, C. L. Beitia, C. M. Myers, and V. L. Kramer. 2002. The Dark Side
Of Stormwater Runoff Management: Disease Vectors Associated With Structural BMPs.
'
Stormwater 3(2): 24-39
Santana, F., J. Wood, R Parsons, and S. Chamberlain. 1994. Control of Mosquito Breeding in
'
Permitted Stormwater Systems. Prepared for Southwest Florida Water Management District,
Brooksville, FL.
'
Schueler, T. 1997. Influence of Ground Water on Performance of Stormwater Ponds in Florida.
Watershed Protection Techniques 2(4)525-528•
Watershed Management Institute (WMI). 1997. Operation, Maintenance, and Management of
'
Stormwater Management Systems. Prepared for U.S. Environmental Protection Agency, Office
of Water. Washington, DC.
'
Young, G.K., et al., 1996, Evaluation and Management of Highway Runoff Water Quality,
Publication No. FHWA-PD-96-032, U.S. Department of Transportation, Federal Highway
Admin tration, Office of Environment and Planning.
Information Resources
Center for Watershed Protection (CWP), Environmental Quality Resources, and Loiederman
Associates. 1997. Maryland Stormwater Design Manual. Draft: Prepared for Maryland
Department of the Environment, Baltimore, MD.
Center for Watershed Protection (CWP). 1997 Stormwater BMP Design Supplement for Cold
' --�
Climates. Prepared for U.S. Environmental Protection Agency, Office of Wetlands, Oceans and
Watersheds. Washington, DC.
FITS -Environmental Protection -Agency (USEPtk)-1993.-Gwdance-Specifying-Management--------
Measures for Sources of Nonpoint Pollution in Coastal Waters. EPA -840-B-92-002. U.S.
Environmental Protection Agency, Office of Water, Washington, DC.
1
January 2003
califomia Stormwater BMP Handbook 9 of to
New Development and Redevelopment
' www.cabmphandbook.com
TC -22 Extended Detention Basin
M IMUME VA7ni
OF SAFM STORM
PLAN VIEW
FILTER DIAPHRAGM
PROFILE
Schematic of an Extended Detention Basin (MDE, 2000)
10 of 10 California Stonmwater BMP Handbook January 2003
New Development and Redevelopment
www.cabmphandbooks.com
Jam_
PLAN VIEW
FILTER DIAPHRAGM
PROFILE
Schematic of an Extended Detention Basin (MDE, 2000)
10 of 10 California Stonmwater BMP Handbook January 2003
New Development and Redevelopment
www.cabmphandbooks.com
I
I]
Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
Appendix E
Soils Report
N/A
1
INLAND. INC.
' Geotechnical, Environmental, and Material Testing Consultants
' PERCOLATION FEASIBILITY REPORT FOR THE
PROPOSED DCH HONDA DEVELOPMENT,
SOUTH OF NORTH PLAZA DRIVE AND WEST
' OF YNEZ ROAD, ASSESSORS PARCEL
NUMBERS (APA) 921-730-067,-068,-069, CITY OF
TEMECULA, RIVERSIDE COUNTY, CALIFORNIA
' Project No. 10 61 62 0-1 0
1
Dated. February 7, 1007
41531 Date Street • Murrieta • CA 92562-7086 • Office (951) 461-1919 • Fax (951) 461-7677
Prepared For:
Mr. Bill Keller
'
RBF CONSULTING
40810 County Center Drive, Suite 100
'
Temecula, California 91591
1
41531 Date Street • Murrieta • CA 92562-7086 • Office (951) 461-1919 • Fax (951) 461-7677
I
IN
' Geotechnical, Environmental, and Material Testing Consultants
February 7, 2007 Project No. I061620-10
tMr. Bill Keller
RBF CONSULTING
40810 County Center Drive, Suite 100
' Temecula, California 92591
'Subject. Percolation Feasibility Report far the Proposed DCH Honda Development, South of North Plaza
Drive and West of Ynez Road, Assessors Parcel Numbers (APN9 921-730-067,-068, -069, City of
Temecula, Riverside County, California
1 References: County of Riverside, Department of Health, Division of Environmental Health, 1981, "Waste Disposal
for Individual Homes, Commercial and Industrial, " dated August.
' 2000, Continuous Pre -Soak Test Procedure, " dated May 24.
' LGC Inland, Inc., 2006, Rough Grade, Project Number, 105837-30, dated January 12.
' LGC Inland, Inc. (LGC) is pleased to present this percolation feasibility report for the proposed commercial
development, Assessors Parcel Numbers 921-730-067, -068, -069, in the City of Temecula, Riverside County,
California. The purpose of our feasibility study was to determine the percolation rates and physical characteristics of
' —the subsurface soils existing within the subject property and then -provide guidelines for the design of onsite storm --
water disposal systems where applicable.
1.0 PROPERTY LOCATIONS AND DESCRIPTION
1 The subject property is located south of North Plaza Drive and west of Ynez Road (See Figure 1). The topography
of the site consists of a previously rough graded area. Features located on the site include detention basins, placed
' aggregate base, and stockpiled soil. The native vegetation consisted of brush, shrubs, bushes and trees.
2.0 PROPOSED CONSTRUCTION
'Based on information provided by you, the proposed development includes a commercial car retail center, parking
areas and associated utilities.
41531 Date Street • Murrieta • CA 92562-7086 • Office (951) 461-1 91 9 • Fax (951)461-7677
' 3.0 SUBSURFACEEWLORATIONANDPERCOLATION TESTING
3.1 Subsurface Exploration
' Subsurface exploration of the subject site consisted of a deep exploratory boring to a depth of 62 feet,
conducted on January 30, 2007. The purpose of excavating the deep exploratory boring included checking for
' groundwater and evidence of impermeable soil layers, and to retrieve soil samples. Earth materials
encountered within the deep exploratory boring was classified and logged in general accordance with the
visual manual procedures of the Unified Soil Classification System.
' The approximate location of the deep exploratory boring is shown on the attached Percolation Test Hole Map,
Plate 1. A log of the soils encountered within the deep exploratory boring is presented in Appendix A.
' 3.2 Percolation Testing
' On January 31, 2007, one (1) percolation test was initiated to evaluate the feasibility of utilizing detention
basins for on site disposal of storm water. The test method employed was the pre-soak test procedure. The
' percolation test was performed in conformance with the guidelines for seepage pits presented in both the
referenced booklet and referenced pre-soak test procedure by the RCEHSD.
' The percolation tests were conducted in an 8.5 -inch diameter test hole mechanically excavated by a drill rig.
The percolation test hole location is shown on the attached Boring and Percolation Test Hole Location Map,
Plate 1. The percolation test hole was located by property boundary measurement on the site plan.
' Groundwater stabilized at a depth of 29.5 feet. Per the RCEHSD procedures for pre-soak testing, the test
whole was filled with clear water.
1
1
1
1
The test was conducted the day after the pre-soak was initiated, but no more than 26 hours after initiating pre-
__------._ _ ..
soak. After presoak, the test was conducted by adjusting the water level to the surface prior to each of four (4)
consecutive readings. The drop in water level was measured from a fixed initial reference point for each
reading. Measurements were made with a precision of %.-inch and after each measurement the water level was
refilled to the original level within the test hole. Percolation test data recorded in the field are presented in
Appendix B, and a summary of the percolation rates are presented below.
PERCOLATION TEST RESULTS
r ' 6 a' 6 C @WEM
a "-
r
RIN
® 15 6
^gffi
y
95M
'
Project No. 10 61 62 0-1 0 Page 2 February 7,2007
' 4.1 Earth Materials 4.0 FINDINGS
' The earth materials encountered on the site include artificial fill encountered at the surface and Quaternary
Young Alluvium. A general description of the soil materials observed on the site is provided in the following
' paragraphs:
Artificial Fill, Compacted (man symbol Afc): Documented compacted artificial fill materials were
encountered throughout the site in the 2 to 15 feet within the borings. These materials are typically locally
derived from the native materials and consist generally of light yellowish brown to olive brown silty sand.
These materials are generally consistent, well consolidated fills.
Ouatemary Artificial fill (map symbol Ova): Young alluvium was encountered generally at depth below the
materials. These materials consisted primarily of yellow brown to black, fine to coarse grained silty sand
' and sandy clay. These materials were typically medium dense and dry to moist.
' 4.2 Groundwater
Groundwater was initially observed within the deep exploratory boring excavated at the subject site at a depth of 37
feet. The groundwater stabilized at a depth of 29.5 feet after 1 day.
4.3 Percolation Test Results
' The measured percolation test rates were 0.29 minutes per inch (mpi). For design purposes, we
recommended an allowable percolation rate of 2 mpi.
5.0 CONCLUSIONS AND RECOMMENDATIONS
' 5.1 General
' Based on the data presented in this report and using the recommendations set forth, it is the judgment of
LGC that there is sufficient area at the subject site to support storm water disposal systems in those areas
with test results that meet the current codes and standards of the RCEHSD. Furthermore, based on the data
presented in this report and the testing information accumulated, it is also the judgment of LGC that the
groundwater table will not encroach within the current allowable limit set forth by Riverside County and
' California State requirements.
11
1
' Project No. 10 61 62 0-10 Page 3 February 7, 2007
6.0 INVESTIGATION LIMITATIONS
' This report is based upon information provided by the client, from published documents, a limited number of
subsurface excavations, field observations and tests to which we applied various methods of analysis and
' interpretation. The materials encountered on the project site and described in reviewed literature are believed
representative of the project area, and the conclusions and recommendations contained herein are presented on that
'basis. However, soil materials can vary in characteristics between points of exploration, both laterally and vertically,
and those variations could affect the conclusions, recommendations, and performance of the sewage disposal system.
Furthermore, the performance of onsite sewage disposal systems is such that deterioration occurs over time even
'when properly used and maintained. Improper use and neglected maintenance will reduce the lifespan of the
primary system, necessitating the premature construction and use of the designated "expansion" system.
'Our services were performed using the degree of care and skill ordinarily exercised, under similar circumstances, by
engineers and geologists practicing in this or other localities. The contents of this report are professional opinions
and as such, are not to be considered a guarantee or warranty.
' The opportunity to be of service is appreciated. Should you have any questions regarding the content of this report,
or should you require additional information, please do not hesitate to contact this office at your earliest
' convenience.
Respectfully submitted,
' LGCIIVLAND,INC. �pN -"Qi\
�W4, bOCligf
` w N 00219c
J>. IVII q�Q
St en M. Poole, PE 40219 ATF OF CAt�F�Q
'Vice President
Principal Engineer
' SMP/CW/JAM/kg/ko
' Distribution: (4) Addressee
Attachments: Figure 1 — Site Location Map (Rear of Text)
' Appendix A — Log of Exploratory Test Pit (Rear of Text)
Appendix B — Percolation Test Results (Rear of Text)
Appendix C — Laboratory Test Results (Rear of Text)
' Plate 1 — Percolation Test Hole Map (In Pocket)
1
' Project No. 1061620-10 Page 4 February 7,2007
5
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Pro ect Name DCH HONDA
Pro'eet No. t061659-10
FIGURE 1
Geol./ En . MB/ SMP
SITE LOCATION [AAP
Scale NOT TO SCALE
Date Februarv2007
5
I
1
11
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1
[1
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1
APPENDIX A
LOG OF EXPLORATORY BORING
Geotechnical
Boring Log 5-1
ate: 1130107 Project
Name: DCH Honda Page 1 of 2
roject Number: 1061659-10 Logged
By: JAM
rifling Company: Cal Pac Type
iop
of Rig: CME -55
rive Weight (lbs): 140
Drop (in): 30 Hole Dia (n): 8
of Hole Elevation (it):
Hole Location: See Geotechnical Ma
c
n
to
c
Ci
=:D-6
CO
a
1
H
`o
o
3
m
n
c
d
—'
s E
o U)
CD
o
o
m
m
o
o
c-9
o
DESCRIPTION
a
~
0
AfC
Artificual Compacted Fill
SM
Silty SAND; light yellow brown, slightly moist, medium dense, fine to
coarse sand, scatterd fine gravel
5
4
5
to
s1
_
_
olive brown, moist
-200 wash
dark brown to gray, moist
10
4
s
S2
_
_
-200 wash
'
Young Alluviam
Qya Quaternary
15
s
12
17
sa
-
-
SM Silty SAND, light yellow brown, moist, medium dense, fine to coarse -200 wash
sand, lenses of Sand
1
20
5
11
16
sq
-
-
dark brown to gray, moist, medium dense to medium stiff.
25
s
n
'
14
ss
—
—
dark grey brown, moist to wet.
'
p Groundwater at 29.5 feet
30
5
s
7
ss
—
—
I
1
1
[1
1
I
1
11
Geotechnical
Boring Log ,B-1
Date: 1!30107
Project Name: DCH Honda Page 2 of 2
Project Number. 1061659.10
Logged By: JAM
Drilling Company: Cal Pac
Type of Rig: CME -55
Drive Weight (Ibs): 140
Drop in): 30 Hole Dia (in): 8
Top of Hole
Elevation (ft):
Hole Location: See Geotechnical Ma
c
c
7
o
Z
z
M
o
o
L
H
r
O
U
a
C
p
m
3
U
0�
o
m
aai
o
M
m
W
0
O
DESCRIPTION
a
30
35
—
—
—
CL
Sandy CLAY; dark brown to black, wet, stiff, fine to coarse sand,
organic fragements
40
3
4
S7
6
45
50
2
3
5
36
_
_
medium stiff
55
60
2
2
4
wet FM
Total Depth = 62.0 feet, Groundwater 29.5 feet
APPENDIX B
1
' PERCOLATION TEST RESULTS
1
1
1
1
1
1
1
1
1
1
1
' LEACHLINE PERC DATA SHEET/PRE-SOAK
' TEST HOLE NO.: SP -1
SOIL CLASSIFICATION: SM
DEPTH OF TEST HOLE: 53 feet
TIME INTERVAL
START 1/30/0710:30
STOP 1/31/0712:30
i'
1
1
1
JOB NO.: 1061620-30
TEST HOLE SIZE: Diameter. 8.5 inches
DATE EXCAVATED: 1/30/07
PRESOAK PERIOD
26:00:00
AMOUNT WATER USED
86.96 gallons
TFQT PERIOD
INTTiAL WATER FIRST WATER AIN WATER
INTERVAL LEVEL LEVEL LEVEL PERCOLATIONRATE
TIME (MI1V) (INCHES) (INCHES) (INCHES) 0117VI17VCID
14:27 0
14:37 10 32.000 32 0.31
14:40 0
14:50 10 33.000 33 0.30
14:52 0
15:02 10 33.000 33 0.30 Y
15:05 0
15:15 10 33.000 33 0.30
TIME
1
APPENDIX C
1 Laboratory Tesdne Procedures and Test Results
1 The laboratory testing program was directed towards providing quantitative data relating to the relevant engineering
properties of the soils. Samples considered representative of site conditions were tested in general accordance with
American Society for Testing and Materials (ASTM) procedure and/or California Test Methods (CTM), where
1 applicable. The following summary is a brief outline of the test type and a table summarising the test results.
Grain Size Distribution: Representative samples were dried, weighed, and soaked in water until individual soil
1 particles were separated (per ASTM D421) and then washed on a No. 200 sieve. The portion retained on the No. 200
sieve was dried and then sieved on a U.S. Standard brass sieve set in accordance with ASTM D422 (CTM 202). Where
1 an appreciable amount of fines were encountered (greater than 20 percent passing the No. 200 sieve) a hydrometer
analysis was done to determine the distribution of soil particles passing the No. 200 sieve.
[1
1
1 Soil Classification: Soils were classified according the Unified Soil Classification System (USCS) in accordance
1 with ASTM Test Methods D2487 and D2488. This system uses relies on the Atterberg Limits and grain size
distribution of a soil. The soil classifications (or group symbol) are shown on the laboratory test data, boring logs,
and trench logs. See USCS classification chart located at the end of this appendix.
1
1
1
�l
'.J
1
1
11
' Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
I
�1
1
1
11
I
11
Appendix F
Treatment Control BMP Sizing Calculations and Design Details
I
Worksheet 1
uesign rrocecture for BMP Design Volume
' 85ih percentile runoff event
Designer: F, G ERA
' Company: � g F C
Date: tiA Qlf�t
Project: p l�DD
Location: 19 v!.4
1. Create Unit Storage Volume Graph
a. Site location (Township, RaTandT
&R
Section).
Section
(1)
b. Slope value from the DesigCurvein
"1
Appendix A.ope
= �, 2
(2)
c. Plot this value on the Unit S
Volume Graph shown on Figure 2.
d. Draw a straight line form this point to
Is this graph Yes No❑
the origin, to create the graph
attached?
2. Determine Runoff Coefficient
a. Deterrrtine total impervious area
A� _ , t� ?'/ �, ��{ acres
(5)
b. Determine total tributary area
Aemi =�, 5 1, , acres
(6)
c. Determine Impervious fraction
1'
d. Use (7) in Fiy�ure 1 to find Runoff
ORC=.8589.-.78i2+.774i+.04
C= 173
(8)
3. Determine 85% Unit Storage Volumje
a. Use (8) in Figure 2
Draw a Vertical line from
graph, then a Horizontal
desired V. value.�
in -acre
_ (�; ,� acre
,(9)
4. Determine Design Storage Volume
a. Vamp = (9) z (6) [n- acP
Jr LD (0)?t�41 in -acre
(10)
b. Vemp _ (10) / 12 [ft- aP
= 0. 2L )a, I ft -acre
(11)
c. Vena = (11) x 43560 [P
= �` J, '! r� �I fl I ft3
(12)
Notes: N�1�A1n �A51� ( L4 -L io P PL F�j+cFFo 4TzGSE�it��i
7
Worksheet 3
Design Procedure Form for Extended Detention Basin
Designer:
JDH
Company:
RBF
Date:
4/10/2007
Project:
DCH Honda
Location: South Basin
1. Determine Design Volume
( Use Worksheet 1)
a. Total Tributary Area (minimum 5 ac.)
b. Design Volume, V..,
Atml=
VWP =
1.5 acres
7841 ft'
2. Basin Length to Width ratio (2:1 min.)
Ratio =
2:01 L:W
3. Two Stage Design
a. Overall Design
1) Depth (3.5' min.)
Depth =
4.5 ft
2) Width (30' min.)
Width =
80 ft
3) Length (60' min)
Length =
100 ft
4) Volume (must be > VBMP)
Volume =
10000 ft3
b. Upper Stage
1) Depth (2' min.)
Depth = N/A
ft
2) Bottom Slope (2% to low flow channel
Slope =
0.01 %
recomended)
c. Bottom Stage
1) Depth (1.5' to 3')
Depth =
4.5 ft
2 ) Length
Length =
60 ft
3) Volume (10 to 25% of VBMP)
Volume =
10 ft'
4. Forebay Design
a. Forebay Volume Volume = N/A ft3
b. Outlet Pipe Drainage time (approx 45 min) Drain time = N/A minutes
5. Low -flow Channel
a. Depth (9" minimum) Depth = 0.75 ft
b. Flow capacity (2 ' Forebay QOUT) Q Low FLOW = 2 cfs
6. Trash Rack or Gravel Pack (check one) Trash Rack
Gravel Pack X
H:/pdata/91000/Strmwtr Management/Water Quality/bmp design/Ext Det Basin
I
1
7. Basin Outlet
a. Outlet type (check one)
Single orifice
X
Multi -orifice plate
Perforated pipe
Other
b. Orifice Area
Area =
z n
�QA1—
c. Orifice Type
Type
circular
d. Maximum Depth of water above
Depth =
4 ft
bottom orifice
e. Length of time for 50% VBMp
Time 50% _
>24 hours hrs
drainage (24 hour minimum)
f. Length of time for 100% VBMp
Time 100% =
48<t<72 hrs
drainage (between 48 and 72
hours)
g. Attached documents (all required)
Attached Documents (check)
1) Stage vs. Discharge
1)
2) Stage vs volume
2)
X
3) Inflow Hydrograph
3)
4) Basin Routing
4)
8. Increased Runoff (optional)
Is this basin also mitigating increased
Yes
No
(If No, skip to #9)
runoff?
Attached Documents (all required)
for 2, 5,& 10 year storms:
Attached Documents
(check)
1) Stage vs. Discharge
1)
2) Stage vs. Volume
2)
3) Inflow Hydorgraph
3)
4) Basin Routing
4)
9. Vegetation (check type)
Native Grasses
Irigated Turf
Hydroseed
Other
10. Embankment
a. Interior slope (4:1 max.)
Interior slope =
3:01 %
b. Exterior slope (3:1 max.)
Exterior slope =
3:01 %
11. Access
a. Slope (10% max.)
b. Width (16 feet min.)
Slope = N/A %
Width = N/A ft
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1
7. Basin Outlet
a. Outlet type (check one)
b. Orifice Area
c. Orifice Type
d. Maximum Depth of water above
bottom orifice
e. Length of time for 50% VBmp
drainage (24 hour minimum)
f. Length of time for 100% VBmp
drainage (between 48 and 72
hours)
g. Attached documents (all required)
1) Stage vs. Discharge
2) Stage vs volume
3) Inflow Hydrograph
4) Basin Routing
8. Increased Runoff (optional)
Is this basin also mitigating increased
runoff?
Attached Documents (all required)
for 2, 5,& 10 year storms:
1) Stage vs. Discharge
2) Stage vs. Volume
3) Inflow Hydorgraph
4) Basin Routing
9. Vegetation (check type)
' 10. Embankment
a. Interior slope (4:1 max.)
b. Exterior slope (3:1 max.)
1
I
11. Access
a. Slope (10% max.)
b. Width (16 feet min.)
Single orifice
X
Multi -orifice plate
Perforated pipe
Other
Area =
Il 042 ftz
Type
circular
Depth =
4 ft
Time 50% _
>24 hours
hrs
Time 100%=
48<t<72
hrs
Attached Documents
(check)
1)
2)
X
3)
4)
Yes No
(If No, skip to #9)
Attached Documents (check)
1)
2)
3)
4)
Native Grasses
Irigated Turf
Hydroseed Other
Interior slope = 2:01 %
Exterior slope = 3:01-%
Slope = N/A %
Width = N/A ft
Worksheet 3
Design Procedure Form for Extended Detention Basin
Designer:
Jdh
Company:
RBF
Date:
4/10/2007
Project:
DCH Honda
Width =
Location:
North Basin
Length =
1. Determine Design Volume
( Use Worksheet 1)
a. Total Tributary Area (minimum 5 ac.) ACJ= 3.6 acres
b. Design Volume, V... VWP = 11326 ft
2. Basin Length to Width ratio (2:1 min.) Ratio = 2:01 L:W
3. Two Stage Design
a. Overall Design
1) Depth (3.5' min.)
Depth =
4.5 ft
2) Width (30' min.)
Width =
75 ft
3) Length (60' min)
Length =
150 ft
4) Volume (must be > VBMp)
Volume =
15000 ft3
b. Upper Stage
1) Depth (2' min.)
Depth = N/A
ft
2) Bottom Slope (2% to low flow channel
Slope =
0.01 %
recomended)
c. Bottom Stage
1) Depth (1.5' to 3')
Depth =
4.5 ft
2 ) Length
Length =
75 ft
3) Volume (10 to 25% of VBMP)
Volume =
15 ft'
4. Forebay Design
a. Forebay Volume
Volume = N/A
ft3
b. Outlet Pipe Drainage time (approx 45 min)
Drain time = N/A
minutes
5. Low -flow Channel
a. Depth (9" minimum)
Depth =
0.75 ft
b. Flow capacity (2 ` Forebay QOUT)
Q Low FLOW =
2 cfs
6. Trash Rack or Gravel Pack (check one)
Trash Rack
Gravel Pack X
H:/pdata/91000/Strmwtr Management/Water Quality/bmp design/Ext Det Basin
D
u
1
L
H:/pdata/91000/Strmwtr Management/Water Quality/bmp design/Ext Det Basin
Volume Based BMPs
General
' The largest concentrations of pollutants are found in runoff from small volume
storms and from the first flush of larger storms. Therefore, volume based BMPs
should be sized to capture and treat the initial and more frequent runoff surges
' that convey the greatest concentration of pollutants. To maximize treatment and
avoid health hazards, volume -based BMPs must retain and release the runoff
between a 24 and 72 hour period. This handbook typically recommends a draw
down time of 48 hours, as recommended by the California BMP Handbook. The
drawdown time refers to the minimum amount of time the design volume must be
retained.
'
In order to meet RWQCB requirements, the method for determining the design
volume is based on capturing 85 percent of the total annual runoff. These 85
percent capture values were determined throughout Riverside County using rain
'
gages with the greatest periods of record. Key model assumptions are based on
studies used in the Urban Runoff Quality Management, WEF Manual of Practice
No '231ASCE Manual of Practice No. 87. (1998) and the California Best
'
Management Practice Handbook. This handbook gives a simple procedure for
determining the design volume of a BMP based on the location of the project.
BMP Design Volume Calculations
Following is a step-by-step procedure for determining design volume for BMPs
using Worksheet 1. Examples of the following procedure can be found in
'
Appendix B.
1. Create Unit Storage Volume Graph:
a) Locate the project site on the Slope of the Design Volume Curve
contained in Appendix A.
b) Read the slope value at this location. This value is. the Unit Storage
Volume for a runoff coefficient of 1.0.
'
c) Plot this value as a point (corresponding to a coefficient of 1.0) on the
Unit Storage Volume Graph shown on Figure 2.
d) Draw a straight line from this point to the origin, to create the graph.
'
2. Determine the runoff coefficient (C) from Figure 1 or the following relationship:
'
C = .858i' -.78i2 + .774i + A4
where i = impervious percentage
—
I-
1.00
3. Using the runoff coefficient found in step 2, determine 85"' percentile unit
'
storage volume (V„) using Figure 2 (created in step 1).
4. Determine the design storage volume (VBmp). This is the volume to be used
�i
in the design of selected BMPs presented in this handbook.
P
L
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30 40 50 60 70 80 90 100
% impervious
Figure 1. Impervious- Coefficient Curve (WEF/ASCE Method)
Impaviousness is the decmml fraction of the total catchment covered by the sum of roads, parking lots,
sidewalks, rooftops, and other impermeable surfaces of an urban landscape.
5
1.00
0.90
=
0.80
0.70
�i
0.60
o
0.50
0.40
0
0.30
0.20
0.10
0.00
0% 10 20
30 40 50 60 70 80 90 100
% impervious
Figure 1. Impervious- Coefficient Curve (WEF/ASCE Method)
Impaviousness is the decmml fraction of the total catchment covered by the sum of roads, parking lots,
sidewalks, rooftops, and other impermeable surfaces of an urban landscape.
5
Plot Slope Value from Appendix A here
2
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
0
1.1
a 1
to
m
< 0.9
0
0.8
2 0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
rn '
Runoff Coefficient (C)
Figure 2 Unit Storage Volume Graph
I
[1
11
[1
DCH -Honda
15101579
South Basin
Orff ice Diameter, in
0.75
Area, Sq. ft
0.012
Orifice Coefficient
0.62
100% WQ Volume Elevation, ft
1,044.00
Top Area, ft
3,940
50% WQ Volume Elevation, ft
1,042.51
Top Area, ft
2,207
Empty Basin Elevation, ft
1,040.00
Top Area, ft
982
Drawdown from 100% to 50%, Hrs
35
Desirable 24-48 hours
Drawdown from 100% to Empty
58
Desirable 48-72
t Drawdown Equation (Source CA BMP page 5-42)
T - (7x10-5)A(H-Ho)os
' C•a
1
1
1
1
1
1
1
1
I
I
DCH -Honda
15101579
North Basin
Orifice Diameter, in
0.75
Area, Sq. ft
0.012
Orifice Coefficient
0.62
100% WQ Volume Elevation, ft
1,046.40
Top Area, ft
3,412
50% WQ Volume Elevation, ft
1,044.48
Top Area, ft
2,524
Empty Basin Elevation, ft
1,041.16
Top Area, ft
-
Drawdown from 100% to 50%, Hrs
38
Desirable 24-48 hours
Drawdown from 100% to Empty
59
Desirable 48-72
Drawdown Equation (Source CA BMP page 5-42)
T-(7x10-5)A(H—Ho) os
' C•a
1
1
1
11
1
1
1
1
O
O
O
CL
0
IL
OR
G
'ULTIMATE' BYPASS FEATURE
(LOUVERS & OPENINGS)
SEE DETAIL C
'ULTIMATE' BYPASS FEATURE
(LOUVERS & OPENINGS)
r-.
DEPTH
Ise 6ui 45'L.%u'r6 YR✓I STANDARD 20 INCHES
SHALLOW 12 INCHES
SECTIONDETAIL B
• RD@
U.S. PATENT # 6,00,023 & 6,877,029
DETAIL C
"ULTIMATE"
BYPASS FEATURES
A74rmM@+PLUS
CATCH BASIN FILTER INSERT
(Frame Mount)
FLAT GRATED INLET
-/'*- ARKriStar Enterprises, Inc.
IKRISTP.O. Box 6419, Santa Rosa, CA 95406
VTPh: 800.579.8819, Fax: 707.524.8186, www.kdstar.com
FGP-0001 A 1"'0001UPR 09/01/06 1 SHEET 2 OF 2
SPECIFIER CHART
MODEL NO.
STANDARD
DEPTH
STANDARD & SHALLOW
DEPTH
(Dab in mese mlumes is me same for
and,STANDARD 6 SHALLOW versions)
INLET O GRATE OD TOTAL
Inside Outside BYPASS
Dimension Dimension CAPACITY
(inch z inch) (inch x inch) (cu. R)
STANDARD DEPTH
-20 Inches-
SOLIDS FILTERED
STORAGE FLOW
CAPACITY
(cu. R) (cu. 8. / sec.)
MODEL NO.
SHALLOW
DEPTH
SHALLOW DEPTH
-12 Inches -
SOLIDS FILTERED
STORAGE FLOW
CAPACITY
(cu. 8.) (cu. it. / sec.)
FGP-12F
12 X 12
12 X 14
2.8
0.3
0.4
FGP-12FB
.15
.25
FGP-1530F
15 X 30
15 X 35
6.9
2.3
1.6
FGP-153OFS
1.3
.9
FGP-16F
16 X 16
16 X 19
4.7
0.8
0.7
FGP-16FB
.45
.4
FGP-1624F
16 X 24
16 X 26
1 5.0
1.5
1.2
FGP-1624F8
.85
.7
FGP-1 BF
18 X 18
18 X 20
1 4.7
0.8
0.7
FGP-18FB
.45
.4
FGP-1820F
16 X 19
18 X 21
5.9
2.1
1.4
FGP-1820F8
1.2
.8
FGP-1624F
16 X 22
18 X 24
5.0
1.5
1.2
FGP-1824F8
.85
.7
FGP-1836F
18 X 36
18 X40
6.9
2.3
1 1.6
FGP-1836FB
1.3
.9
FGP-2024F
18 X 22
20 X 24
5.9
1.2
1 1.0
FGP-2024FB
.7
.55
FGP-21 F
22 X 22
22 X 24
6.1
2.2
1 1.5
FGP-21 F8
1 1.25
.85
FGP-2142F
21 X40
24 X 40
9.1
4.3
1 2.4
FGP-2142F8
2.45
1.35
FGP-2148F
19 X 46
22 X 48
9.8
4.7
2.6
FGP-2148F8
2.7
1.5
FGP-24F
24 X 24
24 X 27
6.1
2.2
1.5
FGP-24FB
1.25
.85
FGP-2430F
24 X 30
26 X 30
7.0
2.8
1.8
FGP-2430FB
1.6
1.05
FGP-2436F
24 X 36
24 X 40
8.0
3.4
2.0
FGP-2436F8
1.95
1.15
FGP-2448F
24 X 48
26 X 48
9.3
4.4
2.4
FGP-2448FB
2.5
1.35
FGP-28F
28 X 28
32 X 32
6.3
2.2
1 1.5
FGP-28F8
1.25
.85
FGP-244OF
24 X 36
28 X 40
8.3
4.2
2.3
FGP-2440F8
2.4
1.3
FGP-30F
30 X 30
30 X 34
8.1
3.6
2.0
FGP-30F8
2.05
1.15
FGP-36F
36 X 36
36 X40
9.1
4.6
2.4
FGP-36FB
2.65
1.35
FGP-3648F
36 X 48
40 X 48
11.5
6.8
3.2
FGP-3648FB
3.9
1.85
FGP-48F
48 X 48
48 X 54
13.2
9.5
3.9
FGP48F8
5.45
2.25
FGP-SD24F
24 X 24
28 X 28
6.1
2.2
1.5
FGP-SD24FB
1.25
FGP-1836FGO
18 X 36
20 X 40
6.9
2.3
1.6
FGP-1836F8GO
1.3FGP-2436FG0
Nl
20 X 36
24 X 40
B.0
3.4
2.0
FGP-2436FBG0
1.95
FGP-48FGO
18 X 48
20X54
6.3
2.2
1.5
FGP48FBGO
1.25
A74rmM@+PLUS
CATCH BASIN FILTER INSERT
(Frame Mount)
FLAT GRATED INLET
-/'*- ARKriStar Enterprises, Inc.
IKRISTP.O. Box 6419, Santa Rosa, CA 95406
VTPh: 800.579.8819, Fax: 707.524.8186, www.kdstar.com
FGP-0001 A 1"'0001UPR 09/01/06 1 SHEET 2 OF 2
Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
' Parcels G, H, & I of LLA No. 03-0658
I
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
1
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N/A
1
1
1
1
1
1
1
1
1
1
RECORDING REQUESTED BY:
City of Temecula
AND WHEN RECORDED MAIL TO:
City of Temecula
43200 Business Park Drive
Temecula, CA. 92589
SPACE ABOVE THIS LINE FOR RECORDER'S USE
AGREEMENT
THIS PAGE ADDED TO PROVIDE ADEQUATE SPACE FOR RECORDING
INFORMATION (Additional Recording Fees Apply)
1
I
Water Quality Management Plan and Stormwater BMP
Transfer, Access and Maintenance Agreement
1 OWNER NAME:
1
1
DCH Auto Group
THIS AGREEMENT is made and entered into in
Temecu
California, this day of
May, 2007, by and between
Auto Group , herein after
referred to as "Owner and the CITY OF Temecula a municipal corporation,
located in the County of Riverside, State of California hereinafter referred to as "CITY";
' WHEREAS, the Owner owns real property ("Property") in the City of Temecula, County of
Riverside, State of California, more specifically described as Exhibit "A" and depicted in
Exhibit "B", each of which exhibits is attached hereto and incorporated herein by this
' reference.
WHEREAS, at the time of initial approval of development project known as
DCH Honda within the Property described herein, the City
required the project to employ Best Management Practices, hereinafter referred to as
' "BMPs" to minimize pollutants in urban runoff;
WHEREAS, the Owner has chosen to install and/or implement BMPs as described in the
' Water Quality Management Plan, on file with the City, hereinafter referred to as "WQMP",
to minimize pollutants in urban runoff and to minimize other adverse impacts of urban
runoff;
WHEREAS, said WQMP has been certified by the Owner and reviewed and approved by
the City;
' WHEREAS, said BMPs, with installation and/or implementation on private property and
' draining only private property, are part of a private facility with all maintenance or
2
replacement theretofore, the sole responsibility of the Owner in accordance with the terms
' of this Agreement.
WHEREAS, the Owner is aware that periodic and continuous maintenance, including, but
not necessarily limited to, filter material replacement and sediment removal, is required to
' assure peak performance of all BMPs in the WQMP and that, furthermore, such
maintenance activity will require compliance with all Local, State, or Federal laws and
' regulations, including those pertaining to confined space and waste disposal methods, in
effect at the time such maintenance occurs.
' NOW THEREFORE, it is mutually stipulated and agreed as follows:
1. Owner hereby provides the City of Temecula designee complete access, of any
' duration, to the BMPs and their immediate vicinity at any time, upon reasonable
notice, or in the event of emergency, as determined by the City's Engineer, no
advance notice, for the purpose of inspection, sampling, testing, of the Device, and
t in case of emergency, to undertake all necessary repairs or other preventitive
measures at the owner's expense as provided in Paragraph 3 below. City shall
make every effort at all times to minimize or avoid interference with Owner's use of
' the Property.
2. Owner shall use its best efforts diligently to maintain all BMPs in a manner
' assuring peak performance at all times. All reasonable precautions shall be
exercised by Owner and Owner's representative or contractor in the removal and
extraction of any material(s) from the BMPs and the ultimate disposal of the
' Material(s) in a manner consistent with all relevant laws and regulations in effect at
the time. As may be requested from time to time by the City, the Owner shall
provide the City with documentation identifying the material(s) removed, the
' quantity, and disposal destination.
3. In the event Owner, or its successors or assigns, fails to accomplish the necessary
' maintenance contemplated by this Agreement, within five (5) days of being given
written notice by the City, the City is hereby authorized to cause any maintenance
necessary to be done and charge the entire cost and expense to the Owner or
' Owner's successors or assigns, including administrative costs, attorneys fees and
interest thereon at the maximum rate authorized by the Civil Code from the date of
the notice of expense until paid in full.
4. The City may require the owner to post security in form and for a time period
satisfactory to the city to guarantee the performance of the obligations stated
' herein. Should the Owner fail to perform the obligations under the Agreement, the
City may, in the case of a cash bond, act for the Owner using the proceeds from it,
or in the case of a surety bond, require the sureties to perform the obligations of
' the Agreement. As an additional remedy, the City's Engineer may withdraw any
previous stormwater-related approval with respect to the property on which the
BMPs have been installed and/or implemented until such time as Owner repays to
' City its reasonable costs incurred in accordance with paragraph 3 above.
5. This agreement shall be recorded in the Office of the Recorder of Riverside
1
County, California, at the expense of the Owner and shall constitute notice to all
' successors and assigns of the title to said Property of the obligation herein set
forth, and also a lien in such amount as will fully reimburse the City, including
interest as herein above set forth, subject to foreclosure in event of default in
' payment.
6. In event of legal action occasioned by any default or action of the Owner, or its
' successors of assigns, then the Owner and its successors or assigns agree(s) to pay
all costs incurred by the City in enforcing the terms of this Agreement, including
' reasonable attorney's fees and costs, and that the same shall become a pert of the
lien against said Property.
t 7. It is the intent of the parties hereto that burdens and benefits herein undertaken
shall constitute covenants that run with said property and constitute a lien there
against.
' 8. The obligations herein undertaken shall be binding upon the heirs, successors,
executors, administrators and assigns of the parties hereto. The term "Owner"
' shall include not only the present Owner, but also its heirs, successors, executors,
administrators, and assigns. Owner shall notify any successor to title of all or part
of the Property about the existence of this Agreement. Owner shall provide such
' notice prior to such successor obtaining an interest in all or part of the Property.
Owner shall provide a copy of such notice to the City at the same time such notice
is provided to the successor.
' 9. Time is of the essence in the performance of this Agreement.
t 10. Any notice to a party required or called for in this Agreement shall be servedin
person, or by deposit in the U. S. Mail, first class postage prepaid, to the address
set forth below. Notice(s) shall be deemed effective upon receipt, or seventy-two
' (72) hours after deposit in the U.S. Mail, whichever is earlier. A party may change
a notice address only by providing written notice thereof to the other party.
tIF TO A CITY: IF TO OWNER:
City Of Temecula DCH Honda
t43200 Business Park Dr. 26755 Ynez Road
' Temecula, CA 92589 Temecula CA 92591
IN WITNESS THEREOF, the parties hereto have affixed their signatures as of the date first
' written above.
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Title
NOTARIES ON FOLLOWING PAGE
A notary acknowledgement is required for recordation (attach appropriate acknowledgement)
ACCEPTED BY:
City Engineer
Date:
Attachment: Standard Notary Acknowledgement
5
I
' CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT
1
State of California
ss.
County ofQ44?211 l 9
On�Sfi �,1�[�� before me, �hEJI 1� ��� � (�R C
Na and Title of Omer (e., If, 'Jane Doe. Notary dri
personally appeared
CHERYL CLOUD
COmmWlon C 16106J2
o fbtay PuWk - Callforrtla �_
RNersltle County
Mycortpn. Expires Oct 29, 2
t personally known to me
proved to me on the basis of satisfactory
evidence
to be the person whose nal is/�v,�re
subscribed to the within instrument anU
acknowledged to me that a/ t9/1 executed
the same in his/ l authorized
capacity(1 ), and that by his/h r/t)yr
signature(�1 on the instrument the person , or
the entity upon behalf of which the person�g
acted, executed the instrument.
WITNESS my h nd official seal.
lure of Notary Public
OPTIONAL
Though the information below is not required by law. it may prove valuable to persons relying on the document and could prevent
fraudulent removal and reattachment of this form to another document.
Description of Attached Document
Title or Type of Document:
Document Date: Number of Pages:
Signer(s) Other Than Named Above:
Capacity(les) Claimed by Signer
Signer's Name:
❑ Individual Top of humh here
❑ Corporate Officer — Title(s):
❑ Partner — ❑Limited LI General
❑ Attorney -in -Fact
❑ Trustee
CI Guardian or Conservator
❑ Other:
Signer Is Representing:
1 01999 National Notary Association - 9350 Do Soto Ave., PO. aox 2402 - Chatswodh, CA 91313-2402 - www.nationainotaryorg
Prod. No. 5907 Reorder'. Call Toll Fire 1-800-8]6682]
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RECORDING REQUESTED BY:
FIRST AMERICAN TITLE COMPANY
WHEN RECORDED MAIL TO:
CITY OF TEMECULA
P.O. BOX 9033
TEMECULA, CA 92589-9033
10
First American Title Company has recorded
this instrument by reyue;t as an accom-
mudatinn unly and hv, not examined it for
regularity cru sufficiency or as to Its effect
upon the title to any reel preperty that may
he descrihed herein.
DOC a 2004-0660749
08/20/2004 08:00A Fee:34.00
Pape 1 of 10
Recorded in Official Records
County of Riverside
Gary L. Orso
Assessor, County Clerk & Recorder
11111111111111111111111111111111111111 III 1111111111111
NOTICE OF LOT LINE ADJUSTMENT
THIS
AREA
FOR
LrI
RECORDER'S
USE ONLY
THIS PAGE ADDED TO PROVIDE ADEQUATE SPACE FOR RECORDING INFORMATION
($3.00 Additional Recording Fee Applies)
s Ss w tri "e
When Recorded,
Return Original To:
City of Temecula
P.O. Box 9033
Temecula, CA 92589-9033
and Return Copy To:
J
THIS SPACE TD BE USED By COUNTY RECORDERS OFFICE ONLY
NOTICE OF LOT LINE ADJUSTMENT PA 03-C659
Record Owners or - Assessors Parcel Numbers of Existing Parcels
North Plaza LLC,.a California Limited Liability Company 921-730-006
North Plaza LLC, a California Limited Liability Company 1 921-730-010
North Plaza LLC, a California Limited Liability Company 1 921-730-011
North Plaza LLC, a California Limited Liability Company I 921-730-012
Legal Description and Map of Adjusted Parcel(s)
'A'
Signature(s)7
printed names) ecord Owner(s)
WILLIAM . , 50
MANA4eg, nloRrc, GAZA 14r
DEPARTMENT USE ONLY
PA o3 -04P58
This N`oj'' Jof LL t/Line Adjustment Nods hereby approved.
By v`;
Debbie Ubnoske
Title Director of Planning..Qjly of Temecula
Date % ,) 3
Attach Appropriate Notary Acknowledgement Form(s) for all signatures
N1Fn4T&Un14d1knFFIr:FXW PWIN144111anObMU04AM
1
' CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT
1
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1
1
State of Califo t
County of yU��
On 6 V � o ?�Pb fore me,
Date
personally appeared 1'
K VALDQ
CommWon M 1249481 sz
Notary PubAC - CaRhxrft i
_RIvarsk7e County
Mt• Con1m.6�ira H WU 20M
Plat Notary Seal Ahow
I ss.
f-2�
Nam (s) M Sl9zr(s)
y-pIrrsonally known to me
L.l proved to me on the basis of satisfactory
evidence
to be the person(s) whose name(s) is/are
subscribed to the within instrument and
acknowledged to me that he/she/they executed
the same in hisfherltheir authorized
capacity(ies), and that by hisfher/their
signature(s) on the instrument the person(s), or
the entity upon behalf of which the person(s)
acted, executed the
� instrument.
WITS m�t�a al official seal.
slgmM of Nowry
OPTIONAL
Though the information below is not required by law, it may prove valuable to persons relying on the document
and could prevent fraudulent removal and reattachment of this fomr to another document.
Description of Attached Document
Title or Type of Document
Document Date: Number of Pages
Signer(s) Other Than Named Above:
Capacity(ies) Claimed by Signer
Signer's Name:
LJ Individual Top of rhv here
❑ Corporate Officer —Tdle(s):
* Partner —❑ Limited O General '
❑ Attorney in Fad
* Trustee
❑ Guardian or Conservator
C I Other:
Signer Is Representing:
0 199 Nalb l Notary Association • 9350 De Sora Ave., PO. Boa 2402 - Chatsworh. CA 91311M02 Pmtl. No. 5907 ReoNe Call Toll -Free 1-800-97"827
LLEGIBLE NOTARY SEAL DECLARATION
' Govemrnent Code Section 27361.7
' I certify under penalty of perjury that the notary seal on the document to which this statement attached
reads as follows:
'
Name of Notary:
Date Commission Expires:
'
Notary Identification No:
(for Notaries commissioned at 1/1/92)
'
ManufacturerNendor Identification No:
(for Notaries commissioned at 1/1/92)
'
Place of Execution of this Declaration:
Date:
K. VALDEZ
NOVEMBER 25, 2D03
1243461
NNAt
FIRST AMERICAN TITLE
JULY 26, 2004
FIRST AMERICAN TITLEJINSURANCE COMPANY
I&
-'/
Authorized Signatory
RBF CONSULTING
27555 Ynez Road, Suite 400
Temecula, CA 92591
December 19, 2003
JN 15-401441-M5
EXHIBIT "A"
'
LOT LINE ADJUSTMENT NO. PA 03-0658
PARCEL "G"
That certain parcel of land situated in the City of Temecula, County of Riverside,
State of California, being those portions of Parcel 7 of Parcel Map No. 23496
filed in Book 168, Pages 41 through 45 of Parcel Maps and Parcel "G" of Lot Line
Adjustment No. PA 03-0657 recorded 8— Z O 2004 as Instrument
No. 2004- of Official Records, both in the Office of the County
Recorder of said County of Riverside, described as a whole as follows
'
BEGINNING at the northwesterly corner of said Parcel "G";
thence along the westerly line of said Parcel "G" South 14°35'02" East 170.79
'
feet;
'
thence North 80058'41" East 350.16 feet to the westerly line of Ynez Road as
shown on said Parcel Map;
thence along said westerly line through the following courses:
North 09°01'19" West 213.35 feet to the beginning of a tangent curve concave
southwesterly and having a radius of 1133.00 feet;
'
thence along said curve northerly 43.32 feet through a central angle of 02°1126"
to a line bearing North 67°39'09" East from POINT OF BEGINNING;
thence leaving said westerly line non -tangent from said curve
South 67039'09" West 376.01 feet to the POINT OF BEGINNING.
CONTAINING: 1.764 Acres, more or less.
PARCEL "H"
That certain parcel of land situated in the City of Temecula, County of Riverside,
State of California, being those portions of Parcel 7 of Parcel Map No. 23496
' filed in Book 168, Pages 41 through 45 of Parcel "aps and Parcel "G" of Lot Line
Adjustment N . PA 03-0657 recorded 9--2 2004 as Instrument
No. 2004- D lo� b7 ys of Official Records, both in the Office of the County
' Recorder of said County of Riverside, described as a whole as follows
Page 1 of 4
HAPDAM401441\OFFICEMPWIM441 IIaODSA c
COMMENCING at the northwesterly corner of said Parcel "G";
thence along the westerly fine of said Parcel "G" South 14035'02" East 170.79
feet to the TRUE POINT OF BEGINNING;
thence continuing South 14035'02" East 190.00 feet;
thence North 80°58'41" East 331.75 feet to the westerly line of Ynez Road as
shown on said Parcel Map;
thence along said westerly line North 09001'19" West 189.11 feet to a line
bearing North 80058'41" East from the TRUE POINT OF BEGINNING;
thence South 8005841" West 350.16 feet to the TRUE POINT OF BEGINNING.
CONTAINING: 1.480 Acres, more or less.
PARCEL "1"
That certain parcel of land situated in the City of Temecula, County of Riverside,
State of California, being those portions of Parcel 7, Parcel 8 and Lot "B" (Park
Plaza Lane -vacated) of Parcel Map No. 23496 filed in Book 168, Pages 41
through 45 of Parcel Maps and Parcel "G" of Lot Line Adjustment No. PA 0_3-
0657 recorded 5-;7-0 2004 as Instrument No. 2004- O�6 7/--1of
Official Records and Parcel "D" of Lot Line Adjustment No. PA 03-0656
recorded ?'2 c7 2004 as Instrument No. 2004- �Of
Official Records both in the Office of the County Recorder of said County of
Riverside, described as a whole as follows;
' COMMENCING at the northwesterly corner of said Parcel "G";
thence along the westerly line of said Parcel "G" South 14°35'02" East 360.79
' feet to the TRUE POINT OF BEGINNING;
thence South 52047'52" West 50.00 feet to a point on a non -tangent curve in the
' northeasterly line of Park Plaza Lane (78.00 feet wide) as described in a
document recorded 2-133 2004 as Instrument No.2004- -78,113
of Official Records in said Office of the Riverside County Recorder, concave
' southwesterly and having a radius of 589.00 feet, a radial line of said curve from
said point bears South 52047'52" West;
' thence along said northeasterly line and the northerly line of Rancho Way the
following courses: along said curve southwesterly 172.78 feet through a central
angle of 16°48'28;
thence tangent from said curve South 20023'40" East 82.23 feet;
HAP DATA\4D1441\OFFICE\WPW INA41 HaD05.doc
Page 2 of 4
' thence South 64013'31" East 34.66 feet;
thence North 69036'20" East 259.93 feet;
' thence North 27°22'44" East 30.45 feet to the westerly line of Ynez Road as
shown on said Parcel Map;
thence along said westerly line North 09001'19" West 210.25 feet to a line
bearing North 80058'41" East from the TRUE POINT OF BEGINNING;
' thence South 80058'41" West 331.75 feet to the TRUE POINT OF BEGINNING.
' CONTAINING: 1.991 Acres, more or less.
' �CL V
T t certain parcel of land situated in the City of Temecula, County of Rive ide,
Stat of California, being those portions of Parcel 8 and Lot "B" (Pa Plaza
' Lane -v ted) of Parcel Map No. 23496 filed in Book 168, Pages 41 rough 45
of Parcel ps and that portion of Parcel "D" of Lot Line Adjustme �o. PAQ3-
0656 record ��l D 2004 as Instrument No. 200 (D 0? of
' Official Record both in the Office of the County Recorder said County of
Riverside, describ as a whole as follows;
' BEGINNING at the no est comer of said Parcel "D
Thence along the northerly a of said Parcel " ' North 67038'32" East 460.51
' feet to a point on a non-tange curve in th outhwesterly line of Park Plaza
Lane as shown on said Parcel Ma oncav ortheasterly and having a radius of
589.00 feet, a radial line of s ' curve from said point bears
North 35°35'38" East;
' thence along said southwesterly ne throug the following courses: along said
curve southeasterly, 30.24 feet rough a central gle of 02°56'29";
thence tangent from s ' curve South 57°20'51" ast 304.79 feet to the
beginning of a tange curve concave northeasterly d having a radius of
' 589.00 feet;
thence along id curve southeasterly 90.11 feet through a ntral angle of
' 08°45'55' to point on a non -tangent curve in the northeasterly line Park Plaza
Lane (78. feet wide) as described in a document recorded ZIA 2004
as Inst ment No. 2004- 7 $213 of Official Records in said Offi of the
' Riv ide County Recorder concave southwesterly and having a radius of 5 .00
f , a radial line of said curve from said point bears South 61006'01" West;
' Page 3 of 4
HAPDATA\401441\OFFICE\W PW IM44111a005.dm
th nce along said northeasterly line and the northerly line of Rancho Wa the
folio ing courses: along said curve southwesterly 87.43 feet through a entral
angle O8°30'19;
thence tan nt from said curve South 20023'40" East 82.23 feet;
thence South °13'31" East 34.66 feet;
thence North 69°36' " East 259.93 feet;
thence North 27°22'44" st 30.45 feet to the wes rly line of Ynez Road as
shown on said Parcel Map;
thence along said westerly line outh 090011 ' East 343.78 feet to the southerly
line of said Parcel 8;
thence along the boundary line of sai arcel 8 and said Parcel "D" through the
following courses: South 80°58'41" s 01.00 feet;
thence South 75°47'21" West 4 .22 feet t a point on a non -tangent curve
concave southerly and havin radius of 230. feet, a radial line of said curve
from said point bears South 4°11'05" East;
thence along said cury esterly 69.70 feet through a ntral angle of 17°21'45';
thence tangent fro said curve South 68°27'10" West 253. feet;
thence North °33'53" West 23.78 feet;
thence N h 29°51'37" West 109.19 feet;
then North 20°21'29" West 609.34 feet to the POINT OF BEGINNING.
NTAINING: 13.476 Acres, more or less.
EXHIBIT `B" attached hereto and by this reference made a part hereof.
This description was prepared
by me or under my direction. o�P-S let
NO. LS 5348
Thomas E, Vedoop, P.L.S. 5348 • ExK1:131104
Expires 12/31/05 s
Page 4 of 4
H:\PDATA\4014411OFFICE\WPWIN\4411taDO5.doc
200 0 200 400 600
GRAPHIC SCALE
� � I N67"39'09"E
331.00
I ;
II � • 1 1 •_�
.. L; uy ,..., .... i
iN l '1 P.O.C. PCLS. H k I
•'^~M8"47
- -'15"E 67
7105.97'
z I 1P.O.B. 2 n.
l PCL. D" 7.P.0.8. o
i '32"EI 450.51, PCL. "H" n
1.® C.
i N67 38 N35 -38'E 13 o N80 ------ n f
6 41 E 350.16 -
r I I
1 2^S I®PGL. 7�3
II T. P.O. B. 1. 4B AC. rn
I -PCL. "I" 331.75' ..
I 1 \... iN80 58 41 E g
I 13.48 AC. f `m I
II / 11 , , 3 1.99 AC.
N23.5g3"E —10
I N6106(01q11 "E \\ �18 f
l l
(R) 5 9 9 6 i O
SCALE Jun rvu.
DECEMBER 19, 2003 1"=200' 15-401441-M5
RAtJCl� WAY
I 3 f
PROS
3p
CL. 8 poI
16
14
1 "W
1
575 47'21"W 431.22'
I NB2 E I
56'41•
/6253.03
201.00
15
1/ SO4.11.05 E//
1 (R>
pCL.
234 9 s7
P •M Nt0.
/41— 45
p$ 16
SEE SHEET
2 FOR DATA TABLE,
LEGEND OF
SYMBOLS AND EASEMENT
NOTES. SHEET
1 OF 2 SHEETS
EXHIBIT
,B,
PL NNIND ■ DE910N ■ CDNSTRUCTIDN
LOT LINE
ADJUSTMENT
t ftno We
27555 YhEZ ROAD. � 400
NO. 03-0658
CONSULTING
679
TF O� A C^li40 - 92591-4679
"A
909.676.0042 • FAX 909 6767240 • wriw.R9F.cnm
SCALE Jun rvu.
DECEMBER 19, 2003 1"=200' 15-401441-M5
DATA TABLE
�N ))
BEARING/DELTA
RADIUS
LENGTH
1
N22'39'09"E
—
35.36'
2
N52'47'52"E
(R)
50.00'
3
16'48'28"
589.00'
172.78'
4
08'30'19"
589.00'
87.43'
5
N20'23'40"W
--
82.23'
6
N64'13'31"W
--
34.66'
7
N69'36'20"E
--
259.93'
8
N27'22'44"E
—
30.45'
9
N69'36'20"E
—
73.33'
10
N09'01'19"W
—
210.25'
11
08'45'55"
589.00'
90.11'
12
N57'20'51"W
—
304.79'
13
02'56'29"
5B9.00'
30.24'
14
N29'51'37"W
—
109.19'
15
N21'33'53'W
—
23.78'
16
17'21'45"
230.00'
69.70'
17
02'11'26"
1133.00'
43.32'
PREPARED UNDER THE
SUPERVISION OF -
VL
THOMAS E. VERLQO
L.S. 5348
EXHIBIT 'B'
EASEMENT NOTES
Qi INDICATES EASEMENT IN FAVOR OF
EASTERN MUNICIPAL WATER DISTRICT
PER INSTRUMENT NO. 43416 RECORDED
MAY 8, 1970
INDICATES EASEMENT IN FAVOR OF
2 PACIFIC TELEPHONE & TELEGRAPH
COMPANY PER INSTRUMENT RECORDED
SEPTEMBER 21, 1917 IN BOOK 470,
PAGE 14 OF DEEDS.
INDICATES EASEMENT IN FAVOR OF
3 THE PUBLIC DEDICATED, BUT NOT
ACCEPTED ON PARCEL MAP NO. 23496
P.M.B. 168/41-45.
LEGEND OF SYMBOLS
EXISTING PARCEL LINE TO REMAIN
- — — — - EXISTING PARCEL LINE TO BE ADJUSTED
NEW ADJUSTED PARCEL LINE
O PARCEL LETTER PER THIS ADJUSTMENT
LOT LINE ADJUSTMENT
NO. 03-0658
LAND
o
o
* L.S. 5348 a *
C IIIL
I rGEND
P.O.C. - POINT OF COMMENCEMENT
P.O.B. - POINT OF BEGINNING
T.P.O.B.- TRUE POINT OF BEGINNING
SHEET 2 OF 2 SHEETS
0 owPLANNING ■ DESIGN ■ CONSTRUCTION
n 2LA, AUFYNU ROAD, 25 1- 400
TEB.fECULq CALIFORNIA 92591-4674
C O N S U LTI N G 909.676.8042 • FAX 909.676.7240 " w .R9F.com
SCALE Jun NU.
DECEMBER 19, 2003 1"=200' 15-401441-M5
E
0
9
Water Quality Management Plan (WQMP)
DCH Honda — Parcel Map 23496
Parcels G, H, & I of LLA No. 03-0658
Appendix H
PHASE 1 ENVIRONMENTAL SITE ASSESSMENT — SUMMARY OF SITE REMEDIATION
CONDUCTED AND USE RESTRICTIONS
N/A