HomeMy WebLinkAboutBook 15 Page 726 WQMP Front Street Plaza Water Quality Managcment Plan (WQMP)
FRONTSTREETPLAZA
• Project Site Address: 28693 Town Fron[ Street, Temecula, CA 92590
Planning Area/Community Name: Old Town
Development Name: Front Street Plaza, LLC
APN Number(s): 922-046-010
Thomas Bros. Map: Page 978, Gride H-1, 2006
Project Watershed: Santa Margari[a River,( Hydrologic Unit 902)
Sub-watershed: Murrieta Creek (HAS 902.32)
Project Site Size: 0.46 AC gross and net disturbed area
Standard Industrial Classification (SIC) Code:
At this time specific tenants are not known but anticipated �ses are general office, commeroial retail and
restaurant. Possiblc SIC Codcs arc as follows: 5812 Eating Placcs, 5813 Drinking Placcs (alcoholic
Beverages), and 5900 Miscellaneous Retail, 7380: Miscellancous Business Scrvices
Formation of Home Owners' Association (HOA) or Property Owners Association (POA):
Y ❑ N �
RESPONSIBLE PARTV:
Front Strcet Plaza, LLC
• 41911 Fifth Street
Temecula, CA 92590
951-491-7777 FAX 951-697-3013
Contact: Bill Dal[on, Managing Partner
Additional Permits/Approvals required for the Project
AGENCY Permit required
State Department of Fish and Game, 1601 Streambed y� N�
Alteration Agreement
State Water Resources Control Board, Clean Water Act y � N �
(CWA) section 401 Water Quality Certification
US Army Corps of Engineers, CwA section 404 permit Y❑ N�
US Fish and Wildlife, Endangered Species Act section 7 y� N�
biological opinion
Oth2f (p/ease list in the space be/ow as �equiredJ
SWRCB General Construction Permit Y❑ N�
City of Temecula Y � N �
• Riverside County Flood Control
Y ❑ N�
A-2
Water Quality Management Plan (WQMP)
FRONTSTREETPLAZA
• PROJECT DESCRIPTION:
The project consists of replacing an existing commcrcial wooden building and associated asphalt parking area
with a ncw four story, concrctc and srocl structura Thc ncw building will includc approximatcly 8582 square
fcet oC ground lloor retail/restaurant shell with the second and third floors being multi-family units. "Che fourth
floor will be office units.
The new building roof foot print will be approximately 18,006 square feet with 1206 square feet of hardscape
and 825 square feet of landscape. Twenty-six parking space are located on ground level covercd by thc sccond
floor.
LOCATION OF NEW FACILITIF.S
The b�ilding will cover the entire project site except for a 5-foot with landscape strip along the westerly side of
the building, and hardscape along the north and northwest corner of the site serving as walkways
PROPOSED ACTIVPCIES AT'THIS FAC1WTlES:
The project will have activities associated with commercial retail, restaurant and multi-family uses.
SPF,CIFIC LOCATION OF ACTIVITIES
All activities will be located within the building structure.
• LOCATION OF MATERIALS STORAGE
Material storage will be located inside the building.
LOCATION OF LOADING AND UNLOADING AREAS
Commercial deliveries will be conducted from the adjaccnt public street (Third Street). U�loading/Loading
docks are notproposed.
ACIVITY SPECIFIC WASTES GENERATED:
Normal household, commercial retail, general of6cc and restaurant waste will be generated on-site. Thc project
will have onc trash cnclosurc located within the building to service the sitc. Possible pollutants are sediment,
nutrients, organic compounds, Trash, oxygen demanding substa�ces, pathogens, oil, grcasc, pesticides and
metals.
Appendix A of this project-specific WQMP indudes a completc copy of the final Conditions of Approval.
Appendix B of this project-specific WQMP shall include:
l. A Vicinity Map identifying the project site and surrounding planning areas in sufficient dctail to
allow the project site to be plotted on Co-Permittee base mapping; and
2. A Site Plan for the projcet. The Site Pla� included as part of Appcndix B depicts the following
project features:
Location and idcntification of all structural BMPs, induding Trcatmcnt Contro] BMPs.
Landscaped areas.
• Paved areas and intended uses (i.e., parking, outdoor work area, outdoor material storage arca, sidewalks,
patios, ten�is courts, etc J.
A-3
Water Quality Managemcnt Plan (WQMP)
FRONTSTREETPLAZA
• Number and type of structures and intended uses (i.e., buildings, tenant spaces, dwclling units, community
facilities such as pools, recreation facilities, tot ]ots, etc.).
Infrastructure (i.e., strccts, storm drains, etc.) that will revert to public agency ownership and operation.
Location of cxisting and proposed public and private storm drainage facilities (i.e., storm drai�s, cha�nels,
basins, etc.), including catch basins and other i�lets/outlet structures. Existing and proposed drainage facilities
should be clearly differentiated.
Location(s) of Receiving Waters to which the project dircctly or indirectly dischargcs.
Location of points where onsite (or tributary offsitc) ilows exits the property/project site.
Proposed drainage areas boundaries, including tributary offsite areas, Cor each location whcre flows exits thc
property/project site. Each tributary area should be clearly denoted.
Pre- and post-project topography.
Appendix G of this project-specific WQMP shall include copies of CC&Rs, Covenant and Agreements, and/or
othcr mcchanisms used to ensurc the ongoing operation, maintcnancc, funding, transfcr and implcmentation of
the project-specific WQMP requireinents.
•
•
A-4
Water Qaality Management Plan (WQMP)
FRONT STRI ET PLAZA
• II. Site Characterization
Land Use Designation or Zoning: Communiry Commercial
Cl1ff211[ PfOPEfty USB: Commercial building and parking ]ot
ProPOSed P�OPerty USe: Restaurant, Commercial and Multi-Family
AV81I8bIIILy Of $OIIS RepOfY: Y❑ N� Note: A soils report is required if infiltration BMPs are
utilized. Attach report in Appendrx E.
Ph858 1$IiE ASSe55171@Ili: Y❑ N� Note: If prepared, attached remedialion summary
und use resh�ictions in Appendix H.
Receiving Waters for Urban Runoff from Site
•
Instructinns:
On the following page, list in ordcr of upstrcam to downsveam, the receiving waters that the project is tributary
to. Continue to fill each row with the receiving watcr's 303(d) listed impairments, designated beneticial uses,
and proximity, if any, to a RARE beneficial use.
•
A-5
Water Quality Management Plan (WQIVIP)
FRON1'STREETPLAZA
• Receiving Waters for Urban Runoff from Site
Receiving Waters 303(d) List Designated Beneficial Uses Proximity to RARE
Im airments Beneficial Use
PHOSPHORUS
Murrieta creek NITROGEN, MUN, AGR, IND, PROC, GWR Not a rare wa[er boady
(HU 2.32,2.520 IRON, ,REC1, REC2, WARM, WILD Approximately 200 feet
MANGANESE
SANTA MARGARITA
RIVER PHOSPHORUS MUN, AGR, IND, REC1, REC2, Approximately 1.25
HU2.22, 2•21) WARM, COLD, WILD, RARE Miles
SANTA MARGARITA
RIVER None MUN, AGR, IND, PROC, REC1, qPProximately 15 Miles
(HU 2.13, 2.11, 2.11 REC2, WARM, COLD, WILD, RARE
SANTA MARGARITA
RIVER LAGOON EUTROPHIC REC1, REC2, EST, WILD, RARE, Approximately 26 Miles
HU 2.11 MAR, MIGR, SPWN
IND, NAV, RECI, REC2, COMM, BIOL,
PACIFIC OCEAN None WILD RARE MAR, AQUA, MIGR, SPWN, APPfOxiitl8[01y 28 Mi125
SHELL
•
•
A-6
Water Quality Managcment Plan (WQMP)
PRONTSTREETPLAZA
� III. Pollutants of Concern
Potential pollutants associated with Urban Runoff Crom thc proposed project must be identified. Exhibit B of thc
WQMP provides brief descriptions of typical pollutants associated with Urban Runoff and a table that
associates typical pote�tial pollutants with rypes of development (land use). lt should be noted that at the Co-
Pennittees discretion, the Co-Permittecs may also accept updated studies from the Califomia Assoeiation of
Stormwater Qualiry Agencies (CASQA), USEPA, SWRCB a�d/or other commonly accepted
agcncies/associations acceptable to the Co-Pennittee for determination of Pollutants of Concern associated with
given land usc. Additionally, in identifying Pollutants of Concem, the presence of legacy pesticides, nutrients,
or hazardous substances in the site's soils as a result of past uses and their potential for exposurc to Urba�
Runoff inust be addressed in project-specific WQMPs. The Co-Pennittee inay also rcquire spccific pollutants
commonly associated with urban runoffto be addressed based on known problems in the watershed. The Iist of
potentia] Urban Runoff pollutants identified for thc project must be compared with the pollutants identified as
causing an impairment of Receivi�g Waters, if any. To identify pollutants impairing proximate Recciving
Waters, each project proponcnt prcparing a project-specific WQMP shall, at a minimum, do the followi�g:
1. For each of the proposed project discharge points, identi£y the proximate Receiving Watcr for each
discharge point, using hydrologic unit basin numbers as identiticd in thc most recent version of the
Water Quality Control Plan for the Santa Ana River Basin or the San Dicgo Region.
2. Idcntify each proximate identified above that is listcd on the most recent list of Clcan Water Act
Section 303(d) list of impaired water bodies, which can be found at website
www.swrcb.ca.gov/tindl/303d_Iisls.htmL List all pollutants for which the proximatc Receiving Waters
are impaired.
• 3. Compare the list of pollutants for which the proximate Receiving Watcrs are impaired with the potential
pollutants to be generated by the project.
Urban Runoff Pollutants:
Attached Residential Development will be �sed as the pollutant category for this WQMP; as such the pollutants
associatcd are listed in the following table.
•
A-7
Water Quality Management Plan (WQMP)
FRON"P STKEE"C PLAZA
� [tem #1 Addressed in Section Ii, Rcceiving Water table.
Item #2 Addressed in Section TI, Rcceiving Water table.
Item #3 `Attachcd Residential Development' will be used as the pollutant category of this WQMP. As
such, the pollutant associated with `Attached Residcntial Devclopmcnt' arc listcd bclow.
POLLUTANTS POTENTIAL 303 (d)
EXPECTED POTENTIAL SOURCE LISTING
SEDIMENTITURBIDITY I200F/ LANDSCAPE
NUTRIENTS LANDSCAPE X
TRASH 8 DEBRIS CUSTOMER/RESIDBNT/EMPLOYEE
OXYGEN DEMANDING LANDSCAPE
SUBSTANCES
PATHOGENS( GARBAG/ROOF
BACTERIA & VIRUSES)
OILS & GREASE RESTAURANT
• PES7ICIDES LANDSCAPE
Pollutants of concern:
Murricta Creck is listcd on 2006 Clean Watcr Act Section 303(d) List of Water Qualiry Limited
Segments as being impaired by Phosphorus, Nitrogen, Iron, and Manganese. As such, these pollutants
are the Pollutants of Concern for this Projcet.
Legacy Pollutants:
Thc projcct sitc prescntly consists of cxisting commcrcial building and parking lot, no known
hazardous substances have been used on the property.
•
A-8
Water Quality Managemcnt Plan (WQMP)
FRONT STREET PLAZA
� IV. Hydrologic Conditions of Concern
Impacts to the hydrologic regime resulting from the Project may include increased runoff volumc and velocity;
reduced infiltration; incrcased flow frcqucncy, duration, and peaks; faster time to reach peak flow; and water
quality degradatioa U�der certain circumstances, changcs could also res�lt in the reduction in thc amount of
available sediment for transport; storm flows could fill this sediment-earrying capaciry by eroding the
downstream chan�el. These changes have the potcntial to permanently impact downstream channels and habitat
integriry. A change to the hydrologic regime of a ProjceYs sitc would be wnsidered a hydrologic condition of
concern if the change would havc a significaot impact on downstream crosion eompared to the pre-developmcnt
coodition or have signiticant impacts on stream habitat, alone or as part oC a cumulative impact from
development in the watershed.
This projcct-specific WQMP must address the issue of Hydrologic Conditions of Concern unless onc of the
following conditions arc mct:
Condition A: Runofffrom the Project is discharged directly to a publicly-owned, operatcd and maintained
MS4; the discharge is i� full compliance with Co-Pcrmittee requirements for connections and discharges to the
MS4 (including both quality and quantiry requirements); the discharge would not significantly impact stream
habitat in proximate Receiving Waters; and thc discharge is authorized by the Co-Pcrmittcc.
Condition B: The project disturbs Icss than 1 acre. The dismrbed area calculation should include all
disturbances associated with larger plans of devclopment.
Condition C: The projecYs runoff flow rate, volume, velocity and duration for the post-developmcnt condition
do not exceed the pre-developmcnt condition for the 2-year, 24-hour and 10-ycar 24-hour rainfall events. This
co�dition 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 mcthods
acccptable to the Co-Permittee.
This Project mects thc following condition: This project is Icss than one acre; therefore, conditon B
Supporting engi�eering studics, calculations, and reports are included in Appcndix C.
2year-24hour 10year-24hour 100year-24hour .
Precondition Post- Precondition Post- Precondition Post-
condition condition condi[ion
Discharge (cfs) 0.10 0.10 0.16 0.16 025 025
elocity (fps) 2.10 2.10 1.91 1.91 2.15 2.15
olume (cubic feet) 2615 2615 4229 4229 6535 6535
olume (Acre) 0.06 0.06 0.10 0.10 0.15 0.15
Duration (minutes) 1310 1370 1310 ]310 1330 1330
•
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Water Quality Management Plan (WQMP)
FRONTSTRGGTPLAZA
� V. Best Management Practices
V.l SiTF DFSiGN BMPs
Projcct proponcnts shall implcmcnt Sitc Design conecpts that achieve each of the following:
1) Minimize Urban Runoff
2) Minimize Impervious Footprint
3) Conscrvc Natural Arcas
4) Minimize Directly Connected Impervious Areas (DCIAs)
The project proponent should identify the specific BMPs implemented to achieve each Site Design coneept and
provide a brief explanation for those Site Design conccpts considcrcd not applicable.
Instruclions:
ln field be7ow, provide narratioe describi��g x�hich site design concepts were inca�poraled into projec� p7ans. Ijthe project
proporren/ implements o Co-Permitlee approi�ed alternatire or equally-ef/�eclive Si1e Design BMP noI specifically
descrified helow, the Site Design BMP checkb2r in Table l shou7d be marked and an additional descripiion indica�ing the
nature of the BMP and how it addresses the Site Design concept shou7d be provided. Continue with completron of Table 1.
Note: The Co-Permitlees genei plaia or o�her land vse regidations/dacuments may reguire several nveasures d�a� are
effeclively srle design BMPs (snch as rninrmraation of directly connec�ed impervrous areas and/or setbacks from natural
slream courses). The Projecl Piropo�veni ahnulcl ��ark with Co-Permittee staff m determine if those reguiremenls may be
• nvterpreted as site design BMPs for use rn this tab(e/narralrve. See Secrion 4.5.1 qjihe WQMP fnr additianal gvidance on
Si�e De.rign BMPs.
Follox�ing Table /: if a prn7icu/ar Site Design BMP cottcep! is found m be not apylicahle, p7ease provide a brief
exp/ai�ation as to why the cottcept cannot be implemen[ed. Alsa include descriytions uplainnzg how each inc/uded BMP
wrll be implemented. /n those areas where Site Design BMPs reguire ongoing nzaintennnce, !he rnspection a�d
rnaintenance,jreguenev, 8ae i��spection criteria, and Ihe entiry or parry responsible for implementalion, maintennnce,
nrxd/or inspectran shall be descri6ed. The /ocation oJ'each Srte Design BMP mx�st alro be shown on !he WQMASite P7aia
inc(uded in Appendix B.
•
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Watcr Quality Management Plan (WQMP)
FRONTSTREETPLAZA
� Table 1. Site Design BMPs
Included
Design Technique Specific BMP Yes No N/A
Concept
Maximize the permeable area (See Section 4.5.1 of the
WQMP).
Comment � � �
Pro osed buildin covers the entire ro ert .
Incorporate landscaped buffer areas between sidewalks
and streets.
Comment: ❑ ❑ �
The Project Site is not suitable for landscape buffer and
building will covers the entire site.
Maximize canopy interception and water conservation by
preserving existing native trees and shrubs, and planting
additional native or drought tolerant trees and large
shrubs. � � �
Comment:
� None existing.
a
� Minimize Use natural drainage systems.
• o
V Comment: ❑ ❑ �
A Urban None existing.
.
d
0 Runoff Where soils conditions are suitable, use perforated pipe
;; or gravel f Itration pits for low flow infiltration.
y ❑ ❑ �
Comment:
Infiltration is not suitable for this project.
Construct onsite ponding areas or retention facilities to
increase opportunities for infiltration consistent with
vector control objectives.
Comment: � � �
Infiltration is not suitable for this project.
Other comparable and equally effective site design
concepts as approved bythe Co-Permittee(Note:
Additional narrative required to describe BMP and how it
addresses Site Design concept). � � �
Comment:
None proposed.
•
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Water Quality Management Plan (WQMP)
FRONT STREET PLAZA
• Contents
Section Page
I PROJECT DESCRIP'I'ION A-I
II SITBCHARACTCRIZA'PION A-S
❑I POLLUTANTSO�CONCGRN A-7
I V I'IYDROLOGIC CONDI'�IONS OY CONCEfiN A-9
V BF.ST MANAGGMCNT PRACTICHS A-IO
V.l Site Design BMPs A-]0
V2 Source Contml BMPs A-14
V3 Treatment Con[rol BMPs A-18
V.4 Equivalent Treatment Con[rol Alter�atives A-21
V.5 Regionally-Based Treatment Control BMPs A-21
V I OPGRATION AND MAINTBNANCE RfSPONSIBILITy FOR TREATMENT
CoNi�RO� BMPS A-22
V❑ FuNniNC A-24
� APPENDICES
A. CONDITIONS OF APPROVAL
B. ViciN�TV MnP, WQMP SiTe P�nN, AND Receiv�NC WnTeas Mnv
C. SUPPORTMG DETAIL RELATED TO I IYDRALiLIC CONDITIONS OF CONCERN
D. EDUCA'PIONAL MATLRIALS
G. SOILS REPORT
F. TRGATMENT CONTROL BMP SIZING CALCULATIONS AND DESIGN DETAILS
G. AGREEMEN'I'S - CCK.RS, COVENAN7' AND AGREEMENI'S AND/OR Ol HER MECHANISMS FOR ENSURING ONGOING
OPHRATION, MNNTCNANCF, FUNDMG AND TRANSFGR OF REQUIRBMGNTS POR THIS PROIIiCT-SPGCI�IC WQMP
I'I. PHASE ] ENVIRONMENTAL SITE ASSESSMENT - SUMMARY OF SITE REMEDIATION CONDUCTBD AND USf:
RESTRICTIONS
•
.�-1
Water Quality Management Plan (WQMP)
PRONTSTREETPLA'!_A
� L Project Description
Instructions:
The project description shall be completely and accurately described in narrative form. In thc field provided on
page A-3, describe and with supporting figures (maps or exl�ibits), whcre Iacilities will be located, what
activitics will be conducted and where, what kinds of materials will be used and/or stored, how and where
materials will be delivered, and the types of wastes that will be generated. The following information shall be
described and/or addressed in the'Project Description" section of the project-specific WQMP:
Project owner and WQMP preparer;
Project location;
Projectsize;
Standard Industrial Classif�ication (SIC), if applicable;
Location of facilities;
Activities and loeation of activities; •
Materials Storage and Delivery Areas;
Wastes generated by project activities.
•
Project Owner:
Front Street Partners Inc.
41911 Fifth Street
Temecula, CA 92590
951-491-7777 FAX 951-697-3013
Contad: Bill Dalton, Managing Partner
WQMP Preparer:
Hector Correa, RCE
HLC Civil Engineering
39281 Via Cadiz
Murrieta, CA 92563
Telephone: (951)640-0957
Contact: Hector Correa, Principal Engineer
•
A-1
Water Quality Nlanagement Plan (WQMP)
FRONTSTREEI'PLAZA
Table 1. Site Design BMPs (Cont.)
• Included
Design Technique Specific BMP Yes No N/A
Concept
Maximize the permeable area (See Section 4.5.1 of the
WQMP).
Comment: ❑ ❑ �
Existing commercial building and parking lot to be replaced with
one buildin coverin the entire site.
Construct walkways, trails, patios, overflow parking lots, alleys,
driveways, low-traffic streets and other low -traffc areas with
open-jointed paving materials or permeable surfaces, such as
N pervious concrete, porous asphalt, unit pavers, and granular ❑ ❑ �
a materials.
� Comment:
� Minimize �nfiltration is not suitable for this ro'ect.
�j Construct streets, sidewalks and parking lot aisles to the
e Impervious minimum widths necessary, provided that public safety and a
A walk able environment for pedestrians are not compromised.
O Footprint Comment: � ❑ ❑
w Public improvements will be constructed per the City Public
y Works De artment.
Reduce widths of street where off-street parking is available.
Comment: � � �
• Streets are not a art of this ro ect.
Minimize the use of impervious surfaces, such as decorative
concrete, in the landscape design. � � �
Comment:
Infiltration is not suitable for this ro'ect.
Other comparable and equally effective site design concepts as
approved by the Co-Permittee (Note: Additional narrative
required describing BMP and how it addresses Site Design
concept). ❑ ❑ �
Comment:
None Pro osed.
"� Conserve natural areas (See WQMP Section 4.5.1).
..
� a ❑ ❑ �
Comment:
o Conserve None existin on-site.
V Maximize canopy interception and water conservation by
� Natura/ Preserving existing native trees and shrubs, and planting
O additional native or drought tolerant trees and large shrubs. � � �
� Areas Comment:
y Pro osed buildin covers the entire ro ert .
Use natural drainage systems.
Comment: ❑ ❑ �
Pro osed buildin covers the entire ro ert .
Other comparable and equally effective site design concepts as
approved by the Co-Permittee (Note: Additional narrative � � �
• required describing BMP and how it addresses Site Design
conce t.
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Water Quality Managcrocnt Plan (WQMP)
FRONTSTRLETPLAZA
Table l. Site Design BMPs (Cont.)
• Included
Design Technique Specific BMP Yes No N/A
Conce t
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. � � �
Comment:
Proposed building covers the entire property, roof runoff will be treated
b a Stormfilter.
Where landscaping is proposed, drain impervious sidewalks, walkways,
trails, and patios into adjacent landscaping. � � �
Comment:
In�ltration is not suitab/e for this Pro ect.
Increase the use of vegetated drainage swales in lieu of underground
piping or imperviously lined swales.
Comment: ❑ ❑ �
Proposed building covers the entire property and roof drains will be
treated b a Storm ilrer.
Rural swale system: street sheet flows to vegetated swale or gravel
shoulder, curbs at street corners, culverts under driveways and street
crossings. ❑ ❑ �
Comment:
Infiltration is not suitab/e for this ro'ect.
�, Minimize Urban curb/swale system: street slopes to curb; periodic swale inlets
drain to vegetated swale/boiler.
� oirecny Comment: � � �
• � Infiltration is not suitable for this ro'ect.
� connected Dual drainage system: First flush captured in street catch basins and
V discharged to adjacent vegetated swale or gravel shoulder, high flows
c
� Impervious connect directly to MS4s. ❑ ❑ �
y Comment:
� Infiltration is not suitab/e for this ro'ect.
y areas Design driveways with shared access, flared (single lane at street) or
Y
y wheel strips (paving only under tires); or, drain into landscaping prior to
/oaas) discharging to the MS4. ❑ ❑ �
Comment:
Not used due to existin access of existin ad acent develo ment.
Uncovered temporary or guest parking on private residential lots may
be paved with a permeable surface, or designed to drain into � � �
landscaping prior to discharging to the MS4.
Comment: Proposed parking is covered.
Where landscaping is proposed in parking areas, incorporate
landscape areas into the drainage design. � � �
Comment:
No landscaping proposed in covered parking area.
Overflow parking (parking stalls provided in excess of the Co-
Permittee's minimum parking requirements) may be constructed with � � �
permeable paving.
Comment: Overf/ow arkin is not a art of ro'ect.
Other comparable and equally effective design concepts as approved
by the Co-Permittee (Note: Additional narrative required describing
BMP and how it addresses Site Design concept). ❑ ❑ �
Comment: Roof Drains to discharge into "Precusr 4R-inch Munhole by
� Contech Storm ilter ".
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Water Quality Managcment Plan (WQMP)
FRONTSTREETPLAZA
• V.2 SOURCE CONTROL BMPS
InslPUCllons: Cnmplele Tah/e Z.
'fablc 2. Source Control BMPs
Check One If not applicable, state
BMP Name Included Not brief reason
A �icable
Non-Slmctural Source'Control BMPs �` ' . - :'. ' .
Education for Properry Owners, Operarors, Tenants, Occupants, � �
or Em lo ees
Activi[ Resvictions � ❑
Irri ation S stem and Lantlsca e Maintenance � ❑
Common Area Litter Control � ❑
Street Swee in Private Streets and Parkin Lots ❑ � Not a art of ro ect
Draina e Facilit Ins ection and Maintenance � ❑
Structural Source Control BMPs '
MS4 S[encilin and Si na e � ❑
Landsca e and Irri a[ion S s[em Desi n � ❑
Protect Slo es and Channels ❑ � Not a art of ro'ec[
Provide Communit Car Wash Racks ❑ � Not a ar[ of ro ec[
Pro erl Desi n: ❑ � Not a art of ro'ect
Fuelin Areas ❑ ❑ Not a art of ro'ect
AidWater Su I Area Draina e ❑ � Not a art of ro'ect
• Trash S[ora e Areas � ❑
Loadin Docks ❑ � Not a art of ro'ect
Maintenance Ba s ❑ � Not a art of ro'ect
Vehicle and E ui men[ Wash Areas ❑ � Not a art of ro'ect
Outdoor Material Stora e Areas ❑ � Not a art of ro'ect
Outdoor Work Areas or Processin Areas ❑ � Not a ar[ of ro ect
Provide Wash Water Controls for Food Pre aration Areas � ❑
InStYUCflons: Po-oi�ide narralive be/ow describing how each included BMP wil! be implemenled, /he implementation
frequency, inspectian and mainienance freguency, inspectian cri)eria, and d2e en�iry or parry responsible Jor
implementation, maintenance, and/or rnspec/ion. Tlre ]ocation af each struc�ural BMP must also be showia on tlze WQMP
Site P/an included in Appendix B.
•
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Water Quality Management Plan (WQMV)
FRONTSTREETPLAZA
• ACTIVITY FREQUENCY RESPONSIBLE PARTY
NON-STRUCTURAL SOURCE CONTROLS �
Provide at occupancy, within 3 months
Educatioo for oew hires, and annually for existing Property Owner
employees
Activiry Rcstrictions Daily Property Owner
Landscape Maintenance Bi-weekly property Owner
Litter Co�trol Daily Property Owner
Drainage Facility Inspection Monlhl
and Maintenance y Property Owner
STRUCTURALSOURCE
CONTROLS
� Stcnciling and Signagc
Bi-annually Properiy Owner
Irrigation Systcm
Maintenance Same as landscape maintenance Pro e Owner
p � �7'
Trash Storage Areas
Daily Property Owner
Wash Water Controls for Dail
Food Preparation Arcas y Property Ow�er
PROPOSED NON-STRUCTURAL SOURCE CONTROL BMPS
Education for Employees & Contractors:
The Developer wil] distribute to employces & Landscape Contractors, a public education program o� the use of
pesticides, herbicides, fertilizers, proper disposa] of wastes, and other storm water pollution prevention
measures. Employees & Landscape Contractors will sign a form ack�owledging reccipt of the storm watcr
pollution prevention materials, (See Appendix D). An Education log will be kept showing that they have
reccived the information. The log will be kept herein in Appendix D.
Activity Rcstrictions:
� At a minimum, Re�tal Agreement will restriet the following activities that may contribute pollutants:
1. Prohibiting the blowing, sweeping, or hosing of debris (leaf litter, grass clippings, litter, etc.) into
streets, storm drain inlets, or other conveyances.
A-15
Water Quality Management Plan (WQMP)
FRONTSTREETPLAZA
� 2. Require dumpster lids to be closed at all times.
3. Prohibit vehicle washing, maintenaoce, or repair o� the premises.
Irrigation System and Landscape Maintenancc
1 Pesticides, fertilizers and other chemical products shall be used in accordance with applicablc
federal, state, and local laws and regulations.
2 Pesticides, fertilizers and other chemical products shall be stored i� closed, labeled containers,
under cover and off the ground.
3 Landscaping wastc shall bc properly disposcd by at an approved composti�g ]ocation or
permitted landfill.
4 Stockpiles shall be placed away from watercourses, and covered to prevent the relcase if
materials to the Stormwater Conveyance System or Receiving Waters.
5 Whcrc practicablc, nativc vcgctation shall be retained or planted to reduce water, fertilizer and
pesticide needs.
6 Areas where work is being actively conducted shall bc routincly elcancd up using dry methods
(c.g., swccping raking, cte.). Wct methods (e.g., hosi�g, etc.) may only be used if adequate
precautions have bcen taken to prcvent thc discharge of wash water or other materials to the
Stormwater Conveyance Syste�n or Receiving Waters.
• 7 'Phe use of blowers is permitted so long as materials are collected and properly disposcd.
8 Mcasures will be takcn to reduce or eliminate landscapi�g and irrigation runof£ Examples of
practices includc proper irrigation programming, programming shorter irrigation cycic times,
and decreasing frequency after the application of fertilizers and pesticides.
9 Fertilizcrs and pesticides will not be applied prior to storm events. These producu wil] �ot be
applied during storm events.
10 Maintenance of irrigation systeins and landscaping will bc consistent with the City of Temecula
landscapc ordinancc, which can be obtained at the City of Temecula planning countcr.
1 I Irrigation systcm maintcnance will be conducted weekly to detect overspray, broken sprinkler
heads, and other system failures.
12 The frequency of irrigation is anticipatcd to be daily during summer months and bi-daily during
thc rest of the year.
Common Area Litter Control
Property Manager will hirc grounds kccper to i�spect and collect all litter on a daily schcdule.
Drainage Facility Inspection and Maintenance
Ail drainagc facilitics will be inspected mo�thly and after each major rain storm and will bc mai�tai�ed by the
Property Manager.
•
A-16
Water QualiTy Management Plan (WQMP)
FRON7'STREETPLAZA
• PROPOSED STRUCTURAL SOURCE CONTROL BMPS
Stenciling and Signagc
Cach catch basin will be stenciled with thc following prohibitive language; "NO DUMPING, DRAINS TO
CREEK".
Landscape and Irrigation System Design
A project-specific WQMP must describe how the following concepts have been incorporatcd into project design
features:
• Employing rain shutot'f deviccs to prevent irrigation during and aftcr precipitation events_
• Designing irrigation systems to each landscapc area's specific water requirements.
• Using flow reducers or shutoff valves higgered by a pressure drop to control watcr loss due to broken
sprinkler heads or lines.
• Tbe timing and application methods of irrigation water shall be dcsigned to minimize the runoff of
exccss irrigation water into the MS4.
• Other comparable, equally effective, methods to reduce irrigation water runoff.
• Preparation and implcmcntation of a]andscape plan consistent with the Co-Pcrmittee's water
conservation ordinance, which may include the use of water sensors, programmable irrigation times (for
short cycics), ctc.
• Preparation and implementation oC a landscapc plan that:
— Utilizes plants with low irrigation rcquirements (for examplc, native or drought tolerant
species)
• — Groups plants with similar water requirements in order to reducc excess irrigation runoff and
promote surface infiltration.
— Use mulches (such as wood chips or shredded wood produets) in planter areas without ground
covcrto minimizesedimentin runoff.
— I�stall appropriate plant matcrials for the ]ocation, in accordance with amount of sunlight and
climate, and use native plant material where possible and/or as recommended by thc landscape
architcct.
— Maintaining or crcating a vegetative barcier along the property boundary a�d interior
watercourses, to act as a pollutant filter, where appropriatc and feasible.
Trash Storage Areas
Trash enclosure is locatcd within the building and will be inspceted weekly.
Providc Wash Water Controls for Food Preparation Areas
Food cstablishmcnts (per State Health & Safcty Code 27520) shall havic either contained areas or sinks, each
with connections to the sanitary sewer for disposal of wash waters containing kitcheo and food wastes. If
locatcd outsidc, the contained areas or sinks shall also be structurally covered to prevent cntry of Urban Runoff.
Adcquate signs shall be provided and appropriately placed stating the prohibition of discharging wash water to
the MS4.
PROPOSED SOURCE CONTROL BMPS MAINTENANCE
The Source Control BMP's will be installcd by the project developer prior to occupancy. Long-term
Maintenance and Inspcction wil] be the responsibility of the Property Managcr.
Appendix D includes copies of thc educational materials that will be �sed in implementi�g this project-specific
• WQMP.
A-17
Water Quality Managcment Plan (WQMP)
PRONTSTREETPLAZA
• V.3 TREA'fb1ENT CONTROL BMPS
Instructions:
1. Provide narraiive below describrng each Treat�nen� Conn�ol BMP. hac7ude location, identi/'y !he sizii�g criteria
(i.e., Ur-ban R:inoffqua7iry design flow (QBMP) or the Ur6an Runaff qnaliry design volume (YBMP), preliminary
desigv calcu/atrons, for srzing BMPs, inaintenance procedrmes, and the fi�eyuency o/'nvaintenance pracedures
necessmv to sustain BMP effectiveness. 7'he localron af each Treahnent Coi�trol BMP n�nst alsa be shown on [he
Site Plan inc7aded in Appendix B.
2. Comple�e Table 3: Trea[men� Control BMP Selection Mntrix
Directions jor completing Table 3:
♦ For each pollutant of concern en�er 'ycr" if identified using Grhibi! B(Riverside County WQMP - Genera!
Categaries aJPol7utants of Concern pes the insh�uc�ions specified in Section Ill of this Templale), or „ nd , if
nor ideiatified for the project.
♦ Check [be boxes of se/ected BMPs lhat will be implemented far tlze project !o address each poRutant of
concern frarn the projec[ as identified using �ehibit B. Treatn�en/ Contro] BMPs must be selected and
installed with respect !o identifred pollutant characleristics and concentratroias that wrl/ be discharged jrom
the sr1e.
♦ Fa� any ident�ed pnllutants of roncern not listed in !he Trea/ment Control BMP Selection Mah-ix, pr-ovrde
nn ecplana/ioi� (in space below) ofhow they will be addressed by Trealment Conlrol BMPs.
3. In ac/diiion m comp/eting Tab1e 3, proi�ide detailed descrrptions on the localion, imp7emenlation, ii�siallation, ared
long-term O&M ojp7anned Treatment Control BMPs.
For ideretified pollutants oj concertt �ha! are causing an impairmen! in receiving waters, the project WQMP shall
� incosporate one or neore Trea[ment Coiatro/ BMPs �f naedium or high effectiveness in red:�cing those pollutants. /1 is Ihe
responsrbiliry oj/he projec! proponent to demonstrate, and doci�men� i�z Uae projec! WQMP, that all pollutants ojconcern
x�ill be fu/ly addre�ssed. The Agency mav reyuire information beyond the minimum requirements of this WQMP ta
demonsn�ate that ndequate pollutant treonreent is berng accomplrshed.
Supporfireg engineering ca7cv7ations jor Q yMP and/or V and Treatment Contro! BMP design details are included iia
Appendix F.
Note: Projects thal wi71 utilize infiln-a/ion-based Treatment Connrol BMPs (e.g., InJi7trntion Basins, Infiltration Trenclves,
Porous Pavemen�) must rnclude a copy �f the property/project soils report as Appendix E to the project-specific WQMP.
The selection of a Treannent Contro! BMP (or BMPs) jor !he projecl must speci/ically ronsider the effectiveness of the
7'reamzent Conn�ol BMP,for pollutants idenlified as causrng aia impairment ofReceiving Walers ta which the projec! will
discharge Ur-ban Runoff.
BMP
This project will includc a"Precas[ 48-inch Manhole by Contech" Thc location is shown on Exhibit A.
•
A-18
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~ in z O F O m O a E
Water Qoality Management Plan (WQMP)
FRONT STREET PLAZA
• Abbreviations:
L: Low removal efficiency HIM: High or medium removal efficiency U: Unknown removal effciency
Notes:
(1) Periodic performance assessment and updating of the guidance provided by this table may be necessary.
(2) indudes grass swales, grass strips, wetland vegeta[ion swales, and biore[ention.
(3) Includes extendedldry detention basins with grass lining and extendedltlry detention basins with impervious lining.
Effectiveness based upon minimum 36-48-hour drawdown time.
(4) Includes infiltration basins, infiltra[ion [renches, and porous pavemen[s.
(5) Includes permanent pool wet ponds and constructed wetlands.
(6) Includes sand filters and media filters.
(7) Also known as hydrodynamic devices, baffle boxes, swirl concentrators, or cyclone separators.
(8) Includes proprietary srormwater treatment devices as listed in the CASQA Stormwater Best Management Prac[ices
Handbooks, other stormwater [rea[men[ BMPs no[ specifically lis[ed in [his WQMP, or newly tleveloped/emerging stormwater
treatment technologies.
(9) Project proponents should base BMP designs on [he Riverside County Stormwater Quality Bes[ Managemen[ Practice Design
Handbook. However, project proponen[s may also wish to reference the Cali(ornia Stormwater BMP Handbook - New
Development and Redevelopment (www.cabmphandbooks.com). The Handbook contains additional information on BMP
operation and maintenance.
(10) Note: Projects that will utilize in(iltration-based Treatment Control BMPs (e.g., Infiltration Basins, Infiltration Trenches, Porous
Pavement) must include a copy of the propertylproject soils report as Appendix E to the project-specific WQMP. The selection
of a Treatment Conhol BMP (or BMPs) for the project must specifically consider the ef(ectiveness of Ihe Treatment Control
BMP (or pollutants identifed as causing an impairment o( Receiving Waters to which the project will discharge Urban Runoff.
•
• A-20
Water Quality Management Plan (WQMP)
FRONT STRGET P[,AZA
• V.4 EQUIVALENT TREATMENT CONTROL ALTERNATIVES
Not Applicable
V.S REGIONALLY-BASED TREATMENT CON'I'ROL BMPS
Not Applicable
•
•
A-21
Water QualiTy Management Plan (WQMP)
FRONT STREET PLAZA
� VI. Operation and Maintenance Responsibility for
Treatment Control BMPs
Operation and maintcnance (O&M) requirements for al] s[ructural Source Control and Treatment Co�trol BMPs
shall bc idcntified in the project-specific WQMP. The project-spccific 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 placeinent of any wastes.
BMP start-up dates.
Schedule of the frequcncy of O&M for cach BMP.
Identification of the parties (name, address, and telephone numbcr) responsible for O&M, i�cluding a written
agreement with the entities respoosible for O&M. This agreement can take the forrn of a Covenant and
Agreement recorded by the Projcct Proponcnt with thc County Recordcr, HOA or POA CC&Rs, formation of a
tnaintenance district or assessinent district or other i�stmment sufficient to guarantee perpetual O&M. The
preparer of this projcct-specific WQMP should carefully rcvicw Scction 4.6 of thc WQMP prior to completing
this section of the project-spccific WQMP.
Self-inspections and record-keeping requiremeots for BMPs (review local specific requirements regarding self-
inspcetions and/or annual reporting), including identification of responsible parties for inspection and reeord-
keeping.
• Thorough descriptions of water quality monitoring, if rcquircd by thc Co-Pcrmittec.
lnSlYUCtlons: /dent� below al/ aperations und marntenance requirements, as described above, J�or each sn-uctural
BMP. Where a pufilic agency is idenfifred as the funding source aizd resporesib/e parryJor a Treatment Contro] BMP, a
copy of the written agreement stating the public agency's accepmnce qf these responsibilitres mus! be provided in
Appendrx G.
Operation and maintenance (O&M) for all Structural Source and Treatment Control BMPs will bc wil] the
responsibiliry of the Property Owncr.
OPERATION AND MAINTENANCE COST ESTIMATE
Structural Quantity Capital Annual Start-up O& m Respo�sible Responsible
BMP Cost O& M Dates Frequency fitnding party funding party
Cost For ins[alla[ion Por long-terni
O&M
"Precast 48-inch Check Current and
Manhole by � EA $6000 52000 prior to Manufactarer Cunent Property Future
Contech occupancy ° Specs. Owner Property
Stormfilter° Owner
•
A-22
Watcr Quality Management Plan (WQMP)
FRONT STKEE'C PLAZA
� Parties responsible for O&M
Thc Property Owncr will be responsible for die O&iVl of this BMP.
Front Strcct Plaza, LLC
41911 Fifth Street
Temecula, CA 92590
951-491-7777 FAX 951-697-3013
Contac[: Bill Dalron, Managing Partner
Proof of Entities Responsiblc For O&�17
The O& M Agrccmcnt in Appendix G will be in place and contains sufficient language to guarantee perpetual
O&M.
Inspection and Record Keeping Requirements and Responsible ParTy
Thc Property Owner will be responsible for thc inspection and record kecping of O&M of this BMP.
•
•
A-23
Water QualiTy Management Plan (WQMP)
FRONT STREET PLAZA
• VII. Funding
A funding source or sources for the O&M of cach Treahnent Control BMP identified io the project-specific
WQMP must be identified. By certifying the project-specific WQMP, the Project applicant is certiCying that the
fimding responsibilities have becn addresscd 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
tide [o the propeRy.
CURRENT PROPERTY OWNER
Front Street Plaza, LLC
41911 Fifth Street
Tcmccula, CA 92590
951-491-7777 PAX 951-697-3013
Contact: Bill Dalton, Managing Partner
•
• A-24
* Water Quality Management Plan (WQMP)
` FRONTSTREETPLAZA
� F[TNDING CERTIFICATION
A source of funding is required for all site desig�, source conffol, and treafi�ent BMPs. For this project, the
owaer w�ll fund the installation, and operation and maintenance of all BMPs set forth in the WQMP until the
project is transferred to a new owner. Each owner shall record this WQMP �vith the County of Riverside as an
attachment to tlie title of thc property in order to transfer the O&M responsibilities to each new owner. VJhere
the o�mcr requires a lessee or other parry to install, and operate and maintain die BMPs, the owner will
maintain ultimate funding responsibilities, and will, upon default of the lessee or other party to fiilfill these
responsibilities shall cause the same to be performcd at owner's expense. Nothing in this WQMP shall prevent
the owner from pursuing wst recovery from any lessee or other party responsible for the BMPs, or from pursing
remedies for the default of responsibilities as provided by the lcase contract and law.
The owner for Front Street Plaza, Lots ] 2-16, Block 24 of MB 15/726, located in the City of Temecula, Riverside
Count}� wil] be responsible for the installation, and operation and maintenance of all BMPs until such time that
the site is transferred to a new owner.
�s� ��t �/ �
Owner's Signamre Date
Bill Dalton, Managing Partner Front Street Plaza, LLC
O�vner's Printed N�mc Owner's or company Official's
Title/Position
•
Front Street Plaza, LLC
419ll Fifth Street
TemecLila, CA 92590
951-491-7777 FAX 951-697-3013
Contact: Bill Dalton, Managing Pafiier
•
A-25
• CALIFORNiA ALL-PURPOSE ACKNOWLEDGMENT
State of California 1
County of �vers�cle �
On ���D'�Z before me, IC. CYDWBI.�, NOtGiYll� Pub�bC ,
Date � Here Insert Name and Tit o( the Oflicer
personally appeared ��U� 0��dt-� I v� i
Name(s) o� Slgner�s)
who proved to me on the basis of satisfactory evidence to
be the person(s) whose name(s�s ar� subscribed to the
within instrument and acknowledged to me that
K. CROWEI� ��sl�e/the9 executed the sa e i hrt�' erHherr authorized
Commission r ta65975 = capacity(ies), and that by�i k�rlEhetF signature(s) on the
_,-:� Notary Public - Cali(arnia � instrument the person(s), or the entity upon behalf of
z Riverside counry which the person(s) acted, executed the instrument.
My Comm. Ez ires Oct 18, 2013 �
I certify under PENALTY OF PERJURY under the laws
of the State of California that the foregoing paragraph is
true and correct.
• WITNESS my h nd and official seal.
Signature�`�-' ���
Place Notary Seal Above Signat�Natary Public
OPTIONAL
Though the inlormation 6elow is not required 6y law, it may prove valuable to persons �elying on the document
and could prevent lraudulent removal and reattachment of this lorm to another document.
Description of Attached Document
Title or Type of Document:
Document Date: N o Pages:
Signer(s) Other Than Named Above:
Capacity(ies) Claimed by Signer(s)
Signer's Name: Signer's Name:
❑ Individual ❑ Individual
❑ Corporate Officer itle(s): ❑ Corporate Officer—Title(s):
❑ Partner —❑ ' ited ❑ General ❑ Partner — O Limited ❑ General
❑ Attomey ' act ' ' ❑ Attomey in Fact • '
❑ TNSf2 Top af �humb here � Trustee Top of thumb here
❑ Guardian or Conservator ❑ Guardian or Conservator
❑ Other: ❑ Other:
Signer Is Representing: Signer Is Representing:
•
m20��NationalNOtaryASSOCiation•9350DeSOtoAVe.,P.O.BOx2402•ChatSworth,CA91313-2402•www.NationalNO[ary.org I�em�59�] ReordecCallTOl6Free1-B00-8]6-682]
Water Quality Management Plan (WQMP)
FRONT STREET PLAZA
� Appendix A
Conditions of Approval
Planning Commission Resolution Pendinq
Dated '�![(�11(
•
•
• EXHIBIT A
CITY OF TEMECULA
FINAL CONDITIONS OF APPROVAL
Planning Application No.: PA10-0251
Project Description: A Development Plan application for the Front Street Plaza, a four-
story, 42,558 square foot mixed use development consisting of
restaurant, office, and residential uses to be constructed on a 0.46
acre site which includes a 6,648 square foot restaurant on the ground
floor plus parking, 25 residential units on the second and third floors,
and 8,992 square feet of office suites on the third and fourth floors
Assessor's Parcel No.: APNs 922-046-010 and 922-046-011
MSHCP Category: Residential Greater than 14 DU
DIF Category: Attached Residential, Office, and Retail Commercial
TUMF Category: Multi-family Residential, Service Commercial/Office, and Retail
• Commercial
Approval Date: March 16, 2011
Expiration Date: March 16, 2013
PLANNING DEPARTMENT
Within 48 Hours of the Approval of This Project
PL-1. The applicanUdeveloper shall deliver to the Planning Department a cashier's check or
money order made payable to the County Clerk in the amount of Sixty-Four pollars
($64.00) for the County administrative fee, to enable the City to file the Notice of
Exemption as provided under Public Resources Code Section 21152 and California
Code of Regulations Section 15062. If within said 48-hour period the applicanU
developer has not delivered to the Planning Department the check as required above,
the approval for the project granted shall be void by reason of failure of condition (Fish
and Game Code Section 711.4(c)).
General Requirements
PL-2. The applicant and owner of the real property subject to this condition shall hereby agree
to indemnify, protect, hold harmless, and defend the City with Legal Counsel of the
City's own selection from any and all claims, actions, awards, judgments, or
proceedings against the City to attack, set aside, annul, or seek monetary damages
• resulting, directly or indirectly, from any action in furtherance of and the approval of the
City, or any agency or instrumentality thereof, advisory agency, appeal board or
legislative body including actions approved by the voters of the City, concerning the
Planning Application. The City shall be deemed for purposes of this condition, to •
include any agency or instrumentality thereof, or any of its elected orappointed officials,
officers, employees, consultants, contractors, legal counsel, and agents. City shall
promptly notify both the applicant and landowner of any claim, action, or proceeding to
which this condition is applicable and shall further cooperate fully in the defense of the
action. The City reserves the right to take any and all action the City deems to be in the
best interest of the City and its citizens in regards to such defense.
PL-3. The permittee shall obtain City approval for any modifications or revisions to the
approval of this project.
PL-4. This approval shall be used within two years of the approval date; otherwise, it shall
become null and void. By use is meant the beginning of substantial construction
contemplated by this approval within the two year period, which is thereafter diligently
pursued to completion, or the beginning of substantial utilization contemplated by this
approval.
PL-5. The Planning Director may, upon an application being filed prior to expiration, and for
good cause, grant a time extension of up to 3 one-year extensions of time, one year at a
time.
PL-6. This project and all subsequent projects within this site shall be consistent with the Old
Town Specific Plan.
PL-7. The project and all subsequent projects within this site shall comply with all mitigation
measures identified within the Old Town Specific Plan EIR •
PL-8. A separate building permit shall be required for all signage.
PL-9. The development of the premises shall substantially conform to the approved site plan
and elevations contained on file with the Planning Department.
PL-10. Landscaping installed for the project shall be continuously maintained to the reasonable
satisfaction of the Planning Director. If it is determined that the landscaping is not being
maintained, the Planning Directorshall have the authorityto require the propertyowner
to bring the landscaping into conformance with the approved landscape plan. The
continued maintenance of all landscaped areas shall be the responsibility of the
developer or any successors in interest.
PL-11. Other than stormwater, it is illegal to allow liquids, gels, powders, sediment, fertilizers,
landscape debris, and waste from entering the storm drain system or from leaving the
property. Spills and leaks must be cleaned up immediately. Do not wash, maintain, or
repair vehicles onsite. Do not hose down parking areas, sidewalks, alleys, or gutters.
Ensure that all materials and products stored outside are protected from rain. Ensure
all trash bins are covered at all times.
PL-12. The applicant shall provide an example mock-up of the brick veneer and paint a three-
foot by three-foot section of the building for Planning Department inspection, prior to
commencing application of any veneers or painting of the building.
•
• PL-13. The applicant shall submit to the Planning Department for permanent filing two 8" X 10"
glossy photographic color prints of the approved color and materials board and the
colored architectural elevations. All labels on the color and materials board and
Elevations shall be readable on the photographic prints.
PL-14. The Conditions of Approval specified in this resolution, to the extent specific items,
materials, equipment, techniques, finishes or similar matters are specified, shall be
deemed satisfied by staff's prior approval of the use or utilization of an item, material,
equipment, finish or technique that City staff determines to be the substantial equivalent
of that required by the Conditions of Approval. Staff may elect to reject the request to
substitute, in which case the real party in interest may appeal, after payment of the
regular cost of an appeal, the decision to the Planning Commission for its decision.
PL-15. Trash enclosures shall be provided to house all trash receptacles utilized on the site.
These shall be clearly labeled on site plan.
PL-16. The developer shall contact the City's franchised solid waste hauler for disposal of
construction and demolition debris. Only the City's franchisee may haul demolition and
construction debris.
PL-17. The applicant shall comply with the Public Art Ordinance.
PL-18. All parkways, including within the right-of-way, landscaping, walls, gates, and on-site
lighting shall be maintained by the property owner or maintenance association.
• PL-19. All costs associated with the relocation of any existing streetlights shall be paid for by
the developer.
PL-20. The trash enclosures shall be large enough to accommodate a recycling bin, as well as
regular solid waste containers.
PL-21. A Minor Modification application will be required for the outdoor dining/sidewalk cafe
use associated with the restaurant.
PL-22. The developer shall contact the Temecula Community Services District Maintenance
Superintendent for a pre-design meeting to discuss design perimeters and obtain
Temecula Community Services District Landscape Standards. The street tree (ROW )
landscape plans submitted for consideration for Temecula Community Services District
maintenance shall be in conformance with the Temecula Community Services District
Landscape Standards.
PL-23. Construction of the street tree (ROW) landscaping shall commence pursuant to a
preconstruction meeting with the developer, Temecula Community Services District
Maintenance Superintendent, Building and Safety Inspector and Public Works
Inspector. Developer shall comply with City and Temecula Community Services District
review and inspections processes.
PL-24. The developer, the developer's successor or assignee, shall be responsible for the
maintenance of the street tree (ROW) landscaping until such time as those
• responsibilities are accepted by the Temecula Community Services District or other
responsible party.
Prior to Issuance of Grading Permit(s) �
PL-25. A Parcel Merger and Certificate of Compliance shall be recorded.
PL-26. A Reciprocal Access Easement and modified parking lot layout shall be approved to
accommodate the access to the City lot to the south of the project site.
PL-27. Provide the Planning Department with a copy of the underground water plans and
electrical plans for verification of proper placement of transformer(s) and double
detector check prior to final agreement with the utility companies.
PL-28. Double detector check valves shall be installed internal to the project site at locations
not visible from the public right-of-way, subject to review and approval by the Planning
Director.
PL-29. The following shall be included in the Notes Section of the Grading Plan: "If at any time
during excavation/construction of the site, archaeological/cultural resources, or any
artifacts or other objects which reasonably appears to be evidence of cultural or
archaeological resource are discovered, the property owner shall immediately advise
the City of such and the City shall cause all further excavation or other disturbance of
the affected area to immediately cease. The Planning Directorat his/hersole discretion
may require the property owner to deposit a sum of money it deems reasonably
necessary to allow the City to consult and/or authorize an independent, fully qualified
specialist to inspect the site at no cost to the City, in order to assess the significance of
the find. Upon determining that the discovery is not an archaeological/ cultural resource,
the Planning Director shall notify the property owner of such determination and shall •
authorize the resumption of work. Upon determining that the discovery is an
archaeological/cultural resource, the Planning Director shall notify the property owner
that no further excavation or development may take place until a mitigation plan or other
corrective measures have been approved by the Planning Director."
Prior to Issuance of Building Permit(s)
PL-30. Building elevations shall illustrate the decorative lighting along the southern and
western property lines consistent with the photometric plan.
PL-31. The applicant shall submit a photometric plan, including the parking lot to the Planning
Department, which meets the requirements of the Development Code and the Palomar
Lighting Ordinance. The parking lot light standards shall be placed in such a way as to
not adversely impact the growth potential of the parking lot trees.
PL-32. All downspouts shall be internalized.
PL-33. Four copies of Construction Landscaping and Irrigation Plans shall be reviewed and
approved by the Planning Department. These plans shall conform to the approved
conceptual landscape plan, or as amended by these conditions. The location, number,
height and spread, water usage or KC value, genus, species, and container size of the
plants shall be shown. The plans shall be consistentwith the Water Efficient Ordinance
and Water Storage Contingency Plan per the Rancho California Water District. The
plans shall be accompanied by the appropriate filing fee (per the City of Temecula Fee •
Schedule at time of submittal) and one copy of the approved Grading Plan.
• PL-34. The Landscaping and Irrigation Plans shall include a note stating that "Three landscape
site inspections are required. The first inspection will verify thatthe irrigation mainline is
capable of being pressurized to 150 psi for a minimum period of two hours without loss
of pressure, which will require inspection of irrigation installation of open trenches. The
second inspection will verify that all irrigation systems have head-to-head coverage, and
to verify that all plantings have been installed consistent with the approved construction
landscape plans. The third inspection will verify proper landscape maintenance for
release of the one year landscape maintenance bond." The applicanUowner shall
contact the Planning Department to schedule inspections.
PL-35. The Landscaping and Irrigation Plans shall include a note on the plans stating that "The
contractor shall provide two copies of an agronomic soils report at the first irrigation
inspection."
PL-36. The Landscaping and Irrigation Plans shall include water usage calculations per
Chapter 17.32 of the Development Code (Water Efficient Ordinance), the total cost
estimate of plantings and irrigation (in accordance with approved plan). Applicant shall
use evapotranspiration (ETo) factorof 0.70 for calculating the maximum allowable water
budget.
PL-37. The Construction Landscape plans shall include all hardscaping and landscaping for
the pedestrian paseos, as well as landscape details for planter boxes interiorto the site.
PL-38. The Construction Landscape Plans shall indicate that all outdoor planter boxes will
• receive automatic irrigation.
PL-39. A landscape maintenance program shall be submitted for approval, which details the
proper maintenance of all proposed plant materials to assure proper growth and
landscape development for the long-term esthetics of the property. The approved
maintenance program shall be provided to the landscape maintenance contractorwho
shall be responsible to carry out the detailed program.
PL-40. Specifications of the landscape maintenance program shall indicate that "Three
landscape site inspections are required. The first inspection will verifythat the irrigation
mainline is capable of being pressurized to 150 psi for a minimum period of two hours
without loss of pressure, which will require inspection of irrigation installation of open
trenches. The second inspection will verify that all irrigation systems have head-to-head
coverage, and to verify that all plantings have been installed consistent with the
approved construction landscape plans. The third inspection will verify proper
landscape maintenance for release of the one year landscape maintenance bond." The
applicanUowner shall contact the Planning Department to schedule inspections.
PL-41. Precise Grading Plans shall be consistent with the approved rough grading plans
including all structural setback measurements.
PL-42. All WQMP treatment devices, including design details, shall be shown on the
construction landscape plans. If revisions are made to the WQMP design that result in
any changes to the conceptual landscape plans after entitlement, the revisions will be
shown on the construction landscape plans, subject to the approval of the Planning
• Director.
PL-43. All utilities shall be screened from public view. Landscape construction drawings shall •
show and label all utilities and provide appropriate screening. Provide a three-foot clear
zone around fire check detectors as required by the Fire Department before starting the
screen. Group utilities together in order to reduce intrusion. Screening of utilities is not
to look like an after-thought. Plan planting beds and design around utilities. Locate all
light poles on plans and insure that there are no conflicts with trees.
PL-44. Building plans shall indicate that all roof hatches shall be painted "International Orange."
PL-45. The construction plans shall indicate the application of painted rooftop addressing
plotted on a nine-inch grid pattern with 45-inch tall numerals spaced nine inches apart.
The numerals shall be painted with a standard nine-inch paint roller using fluorescent
yellow paint applied over a contrasting background. The address shall be oriented to
the street and placed as closely as possible to the edge of the building closest to the
street.
PL-46. The developer shall provide the Planning Department verification of arrangements
made with the City's franchise solid waste hauler for disposal of construction and
demolition debris.
PL-47. The developer shall satisfy the City's parkland dedication (Quimby) requirement through
the payment of in-lieu fees equivalent to .30 acres of parkland, based upon the City's
then current land evaluation. Said requirement includes a no credit for private
recreational opportunities provided on site.
PL-48. The developer shall meet with the Temecula Community Services District (TCSD) to •
verify irrigation tie in locations for the trees within the right-of-way. Irrigation for the new
trees should be coordinated with the existing TCSD irrigation.
PL-49. The landscape construction drawings for the street tree (ROW ) landscaping shall be
reviewed and approved by the Director of Community Services.
PL-50. The developer shall post security and enter into an agreement to install the street tree
(ROW) landscaping.
Prior to Release of Power, Building Occupancy or Any Use Allowed by This Permit
PL-51. An applicant shall submit a letter of substantial conformance, subject to field verification
by the Planning Director or his/her designee. Said letter of substantial conformance
shall be prepared by the project designer and shall indicate that all plant materials and
irrigation system components have been installed in accordance with the approved fnal
landscape and irrigation plans. If a certificate of use and occupancy is not required for
the project, such letter of substantial conformance shall be submitted priorto scheduling
for the final inspection.
PL-52. The applicant shall be required to screen all loading areas and roof mounted
mechanical equipment from view of the adjacent residences and public right-of-ways. If
upon final inspection it is determined that any mechanical equipment, roof equipment or
backs of building parapet walls are visible from any portion of the public right-of-way
adjacent to the project site, the developer shall provide screening by constructing a •
sloping tile covered mansard roofelementorotherscreening reviewed and approved by
the Planning Director.
• PL-53. All required landscape planting and irrigation shall have been installed consistent with
the approved construction plans and shall be in a condition acceptable to the Planning
Director. The plants shall be healthy and free of weeds, disease, or pests. The
irrigation system shall be properly constructed and in good working order.
PL-54. Performance securities, in amounts to be determined by the Planning Director, to
guarantee the maintenance of the plantings in accordance with the approved
construction landscape and irrigation plan shall be filed with the Planning Department
for a period of one year from final Certificate of Occupancy. After that year, if the
landscaping and irrigation system have been maintained in a condition satisfactory to
the Planning Director, the bond shall be released upon request by the applicant.
PL-55. Each parking space reserved for the handicapped shall be identified by a permanently
affixed reflectorized sign constructed of porcelain on steel, beaded text or equal,
displaying the international Symbol of Accessibility. The sign shall not be smaller than
70 square inches in area and shall be centered at the interior end of the parking space
at a minimum height of 80 inches from the bottom of the sign to the parking space
finished grade, or centered at a minimum height of 36 inches from the parking space
finished grade, ground, or sidewalk. A sign shall also be posted in a conspicuous
place, at each entrance to the off-street parking facility, not less than 17 inches by 22
inches, clearly and conspicuously stating the following:
"Unauthorized vehicles parked in designated accessible
spaces not displaying distinguishing placards or license
• plates issued for persons with disabilities may be towed away
at owner's expense. Towed vehicles may be reclaimed by
telephoning (951) 696-3000."
PL-56. In addition to the above requirements, the surface of each parking place shall have a
surface identification sign duplicating the Symbol of Accessibility in blue paint of at least
three square feet in size.
PL-57. The street tree (ROW ) landscaping shall be completed to the satisfaction of the Director
of Community Services.
PL-58. All site improvements including but not limited to parking areas and striping shall be
installed.
PL-59. All of the foregoing conditions shall be complied with prior to occupancy or any use
allowed by this permit.
OUTSIDE AGENCIES
PL-60. The applicant shall comply with the recommendations set forth in the County of
Riverside Department of Environmental Health's transmittal dated August 25, 2010, a
copy of which is attached.
PL-61. The applicant shall comply with the recommendations setforth in the Eastern Municipal
W ater DistricYs transmittals dated September 10, 2010 and January 27, 2011, copies of
• which are attached.
BUILDING AND SAFETY DEPARTMENT •
General Conditionsllnformation
B-1. Obtain street addressing for all proposed buildings.
B-2. All design components shall comply with applicable provisions of the 2010 edition of the
California Building, Plumbing and Mechanical Codes; 2010 California Electrical Code;
California Administrative Code, Title 24 Energy Code, California Title 24 Disabled
Access Regulations, and the Temecula Municipal Code.
B-3. Provide details of all applicable disabled access provisions and building setbacks on
plans.
B-4. Provide disabled access from the public way to the main entrance of the building.
B-5. Provide van accessible parking located as close as possible to the main entry.
B-6. Show path of accessibility from parking to furthest point of improvement.
B-7. Submit at time of plan review, a complete exterior site lighting plan showing compliance
with Ordinance Number 655 for the regulation of light pollution. All streetlights and
other outdoor lighting shall be shown on electrical plans submitted to the Department of
Building and Safety. Any outside lighting shall be hooded and aimed not to shine
directly upon adjoining property or public rights-of-way.
B-8. A receipt or clearance letter from the Temecula Valley School District shall be submitted .
to the Building and Safety Department to ensure the payment or exemption from School
Mitigation Fees.
B-9. Obtain all building plans and permit approvals prior to commencement of any
construction work.
B-10. Commercial and industrial project trash enclosures, patio covers, light standards, and
any block walls will require separate approvals and permits.
B-11. Signage shall be posted conspicuously at the entrance to the project that indicates the
hours of construction, as allowed by the City of Temecula Municipal Ordinance
9.20.060, for any site within one-quarter mile of an occupied residence. The permitted
hours of construction are Monday through Friday from 7:00 a.m. to 6:30 p.m., and
Saturday from 7:00 a.m. to 6:30 p.m. No work is permitted on Sundays and nationally
recognized Government Holidays.
B-12. The City of Temecula adopted an ordinance on March 31, 2003 to collect fees for a
Riverside County area wide Transportation Uniform Mitigation Fee (TUMF). This
project is subject to payment of these fees at the time of building permit issuance. The
fees are subject to the provisions of Ordinance 03-01 and the fee schedule in effect at
the time of building permit issuance.
B-13. Provide an approved automatic fire sprinkler system. •
• B-14. Commercial projects shall provide a house electrical meter to provide power for the
operation of exterior lighting, irrigation pedestals and fire alarm systems for each
building on the site. Developments with single user buildings shall clearly show on the
plans how the operation of exterior lighting and fire alarm systems when a house meter
is not specifically proposed.
At Plan Review Submittal
,
B-15. Provide electrical plan including load calculations and panel schedule, plumbing
schematic and mechanical plan applicable to scope of work for plan review.
B-16. Provide a Sound Transmission Control Study in accordance with the provisions of the
Section 1207, of the 2010 edition of the California Building Code.
B-17. Provide number and type of restroom fixtures, to be in accordance with the provisions of
the 2010 edition of the California Plumbing Code.
B-18. Provide precise grading plan to verify accessibility for persons with disabilities.
B-19. Provide truss calculations that have been stamped by the engineer of record of the
building and the truss manufacturer engineer.
Prior to Issuance of Building Permit(s)
B-20. Provide appropriate stamp of a registered professional with original signature on plans.
• Prior to Beginning of Construction
B-21. A pre-construction meeting is required with the building inspector priorto the startof the
building construction.
B-22. An asbestos report and AQMD clearance will be required before a demolition permitwill
be issued.
FIRE PREVENTION
General Requirements
F-1. Final fire and life safety conditions will be addressed when building plans are reviewed
by the Fire Prevention Bureau. These conditions will be based on occupancy, use, the
California Building Code (CBC), California Fire Code (CFC), and related codes which
are in force at the time of building plan submittal.
F-2. If construction is phased, each phase shall provide approved access and fire protection
prior to any building construction (CFC Chapter 5, Section 503.4)
Prior to Issuance of Grading Permit(s)
F-3. Fire apparatus access roads shall be designed and maintained to support the imposed
• loads of fire apparatus and shall be with a surface to provide all-weather driving
capabilities. Access roads shall be 80,000 Ibs. GVW with a minimum of AC thickness
of .25 feet. In accordance with Section 1410.1, prior to building construction, all
locations where structures are to be built shall have fire apparatus access roads (CFC •
Chapter 5, Section 503.2, 503.4 and City Ordinance 15.16.020 Section E).
F-4. Fire Department vehicle access roads shall have an unobstructed width of not less than
24 feet and an unobstructed vertical clearance of not less than 13 feet 6 inches (CFC
Chapter 5, Section 503.2, 503.4 and City Ordinance 15.16.020 Section E).
Prior to Issuance of Building Permit(s)
F-5. Fire sprinkler plans shall be submitted to the Fire Prevention Bureau for approval.
Three sets of sprinkler plans must be submitted by the installing contractor to the Fire
Prevention Bureau. These plans must be submitted prior to the issuance of building
permit.
F-6. Fire alarm plans shall be submitted to the Fire Prevention Bureau for approval. Three
sets of alarm plans must be submitted by the installing contractor to the Fire Prevention
Bureau. The fire alarm system is required to have a dedicated circuit from the house
panel. These plans must be submitted prior to the issuance of building permit.
Prior to Issuance of Certificate of Occupancy
F-7. New buildings shall have approved address numbers, building numbers or approved
building identification placed in a position that is plainly legible and visible from the
street or road fronting the property. These numbers shall contrast with their
background. Commercial, multi-family residential and industrial buildings shall have a
minimum of 12-inch numbers with suite numbers being a minimum of six inches in size. •
All suites shall have a minimum of 6-inch high letters and/or numbers on both the front
and rear doors (CFC Chapter 5, Section 505.1 and City Ordinance 15.16.020 Section
E ).
F-8. A"Knox-Box" shall be provided. The Knox-Box shall be installed a minimum of six feet
in height and be located to the right side of the fire riser sprinkler room (CFC Chapter 5,
Section 506).
F-9. All manual and electronic gates on required Fire Department access roads or gates
obstructing Fire Department building access shall be provided with the Knox Rapid
entry system for emergency access by fire fighting personnel (CFC Chapter 5, Section
506).
F-10. The applicant shall prepare and submit to the Fire Department for approval, a site plan
designating fire lanes with appropriate lane painting and/or signs (CFC Chapter 5,
Section 503.3).
POLICE DEPARTMENT
General Requirements
PD-1. Applicant shall ensure any landscaping surrounding all buildings is kept at a height of
no more than three feet or below the ground floor window sills. Plants, hedges and
shrubbery shall be defensible plants to deter would-be intruders from breaking into the •
buildings utilizing lower level windows.
• PD-2. Applicant shall ensure any trees surrounding all building rooftops be kept at a distance
to deter roof accessibility by "would-be burglars." Since trees also act as a natural
ladder, the branches must be pruned to have a six-foot clearance from the buildings.
PD-3. All out door parking lot lighting shall be energy saving and minimized after hours of
darkness and in compliance with Title 24, Part 6, of the California Code of Regulations.
PD-4. All exterior lighting shall be in compliance with Riverside County Mount Palomar
Lighting Ordinance 655, low pressure sodium lighting preferred.
PD-5. All exteriordoors shall have a vandal resistant light fxture installed above the door. The
doors shall be illuminated with a minimum one-foot candle illumination at ground level,
evenly dispersed.
PD-6. All lighting affixed to the exterior of buildings shall be wall mount light fixtures.
PD-7. Applicant shall complywith the Governor's order to address the power crisis. This order
became effective March 18, 2001 calling for a substantial reduction from businesses to
cut usage during non-business hours. The order, in part, states, "All California retail
establishments, including, but not limited to, shopping centers, auto malls and
dealerships, shall substantially reduce maximum outdoor lighting capability during non-
business hours except as necessary for the health and safety of the public, employees
or property." Failure to comply with this order following a warning by law enforcement
officials shall be punishable as a misdemeanor with a fine not to exceed $1000 in
• accordance with Title 24, Part 6, of the California Code of Regulations
PD-8. All doors, windows, locking mechanisms, hinges, and other miscellaneous hardware
shall be commercial or institution grade.
PD-9. Any graffiti painted or marked upon the buildings must be removed or painted over
within 24 hours of being discovered. Report all such crimes to the Temecula Police 24-
hour dispatch Center at (951) 696-HELP.
PD-10. Upon completion of construction, the buildings shall have a monitored alarm system
installed and monitored 24 hours a day by a designated private alarm companyto notify
the Temecula Police Department of any intrusion. All multi-tenant
offices/suites/businesses located within a specific building shall have their own alarm
system. This condition is not applicable if the business is opened 24/7.
PD-11. Any roof hatches shall be painted "International Orange."
PD-12. Any public telephones located on the exterior of the buildings shall be placed in a well-
lit, highly visible area, and installed with a"call-out only" feature to deter loitering. This
feature is not required for public telephones installed within the interior of the buildings.
PD-13. All disabled parking stalls on the premises shall be marked in accordance with Section
22511.8 of the California Vehicle Code.
PD-14. Crime prevention through environmental design as developed by the National Crime
• Prevention Institute (NCPI) supports the concept that "the proper design and effective
use of the built environment can lead to a reduction in the fear and incidence of crime
and an improvement in the quality of life." The nine primary strategies that support this •
concept are included for informational purposes below:
a. Provide clear border definition of controlled space. Examples of border definition
may include fences, shrubbery or signs in exterior areas. Within a building, the
arrangement of furniture and color definition can serve as a means of identifying
controlled space.
b. Provide clearly marked transitional zones. Persons need to be able to identifywhen
they are moving from public to semi-public to private space.
c. Gathering or congregating areas to be located or designated in locations where
there is good surveillance and access control.
d. Place safe activities in unsafe locations. Safe activities attract normal users to a
location and subsequently render the location less attractive to abnormal users due
to observation and possible intervention.
e. Place unsafe activities in safe locations. Placing unsafe activities in areas of natural
surveillance or controlled access will help overcome risk and make the users of the
areas feel safer.
f. Redesign the use of space to provide natural barriers. Separate activities that may
conflict with each other (outdoor basketball court and children's play area, for
example) by distance, natural terrain or other functions to avoid such conflict.
g. Improve scheduling of space. The timing in the use of space can reduce the risk for •
normal users and cause abnormal users to be of greater risk of surveillance and
intervention.
h. Redesign space to increase the perception of natural surveillance. Abnormal users
need to be award of the risk of detection and possible intervention. W indows and
clear lines-of-sight serve to provide such a perception of surveillance.
i. Overcome distance and isolation. This strategy may be accomplished through
improved communications (portable two-way radios, for example) and design
efficiencies, such as the location of restrooms in a public building.
PD-15. Any questions regarding these conditions should be directed to the Temecula Police
Department Crime Prevention and Plans Unit at (951) 695-2773.
PUBLIC WORKS DEPARTMENT
General Requirements
PW-1. Unless otherwise noted, all conditions shall be completed by the developerat no costto
any Government Agency. It is understood that the developer correctly shows on the site
plan all existing and proposed property lines, easements, traveled ways, improvement
constraints and drainage courses, and their omission may require the project to be
resubmitted for further review and revision. •
• PW-2. A Grading Permit for precise grading, including all on-site flat work and improvements,
shall be obtained from the Department of Public Works prior to commencement of any
construction outside of the City-maintained street right-of-way.
PW-3. An Encroachment Permit shall be obtained from the Department of Public Works prior
to commencement of any construction within an existing or proposed City right-of-way.
PW-4. All grading plans shall be coordinated for consistency with adjacent projects and
existing improvements contiguous to the site and shall be submitted on standard 24" x
36" City of Temecula mylars.
PW-5. The project shall include construction-phase pollution prevention controls into the
design of the project to prevent non-permitted runoff from discharging off site or
entering any storm drain system or receiving water during all field-related activities.
PW-6. A Water Quality Management Plan (WQMP) must be conceptually accepted bythe City
prior to the initial grading plan check. The WQMP will be prepared by a registered civil
engineer and include source controls, and treatment devices.
PW-7. All onsite storm drain and onsite water quality features shall be privately maintained.
Prior to Issuance of Grading Permit
PW-8. The developer shall submit a reciprocal easement document for egress from the City of
• Temecula, the adjacent property owner to the south, for review and approval.
PW-9. To accommodate egress for this project and ensuing replacement for loss of parking
spaces to the parking lot to the south, the Developer shall:
a. Submit a signing and striping plan for the parking lot to the south to the Department
of Public Works for review and approval.
b. Complete the signing and restriping of the parking lot within seven (7) working days
from the date of the issuance of a grading permit.
PW-10. The Water Quality Management Plan (WQMP) must receive final acceptance by the
City prior to issuance of any grading permit.
PW-11. A grading plan shall be prepared by a registered civil engineer in accordance with City
of Temecula standards, and shall be reviewed and approved by the Department of
Public Works prior to the commencement of grading. The grading plan shall include all
necessary erosion control measures needed to adequately protect the site (public and
private) and adjoining properties from damage due to erosion.
PW-12. The developer shall post security and enter into an agreement guaranteeing the grading
and erosion control improvements in conformance with applicable City Standards and
subject to approval by the Department of Public Works in accordance with Grading
Ordinance Section 18.24.120.
. PW-13. A Soils Report shall be prepared by a registered soil or civil engineer and submitted to
the Department of Public Works with the initial grading plan check. The report shall
address all soil conditions of the site, and provide recommendations forthe construction •
of engineered structures and pavement sections.
PW-14. A Geological Report shall be prepared by a qualified engineer or geologist and
submitted to the Department of Public Works with the initial grading plan check. The
report shall address special study zones and the geological conditions of the site, and
shall provide recommendations to mitigate the impact of ground shaking and
liquefaction.
PW-15. The developer shall have a Drainage Study prepared by a registered civil engineer in
accordance with City Standards identifying storm water runoff expected from this site
and upstream of this site. The study shall identify all existing or proposed public or
private drainage facilities intended to discharge this runoff. The study shall also analyze
and identify impacts to downstream properties and provide specific recommendations to
protect the properties and mitigate any impacts. Any upgrading or upsizing of
downstream facilities, including acquisition of drainage or access easements necessary
to make required improvements, shall be provided by the developer.
PW-16. Construction-phase pollution prevention controls shall be consistent with the City's
Grading, Erosion and Sediment Control Ordinance and associated technical manual
and the City's standard notes for Erosion and Sediment Control.
PW-17. A flood mitigation charge shall be paid. The Area Drainage Plan fee is payable to the
Riverside County Flood Control and Water Conservation District by either cashier's
check or money order, prior to issuance of permits, based on the prevailing area
drainage plan fee. If the full Area Drainage Plan fee or mitigation charge has already •
been credited to this property, no new charge needs to be paid.
PW-18. As deemed necessary by the Department of Public Works, the developer shall receive
written clearance from the San Diego Regional Water Quality Board, Riverside County
Flood Control and Water Conservation District, Planning Department, or otheraffected
agencies.
PW-19. The developer shall comply with all constraints which may be shown upon an
Environmental Constraint Sheet (ECS) recorded with any underlying maps related to the
subject property.
PW-20. Permanent landscape and irrigation plans shall be submitted to the Planning
Department and the Department of Public Works for review and approval.
PW-21. The applicant shall comply with the provisions of Chapter 8.24 of the Temecula
Municipal Code (Habitat Conservation) by paying the appropriate fee set forth in that
ordinance or by providing documented evidence that the fees have already been paid.
PW-22. The developer shall obtain letters of approval for any off site work performed on
adjoining properties. The letters shall be in format as directed by the Department of
Public Works.
Prior to Issuance of Building Permit
PW-23. All existing and proposed utilities shall be undergrounded per Title 15, Chapter 15.04 of •
the Temecula Municipal Code.
� PW-24. Relocation of existing utilities affected by this project shall be completed and/or pay a
fair share contribution unless otherwise, directed by the Director of Planning and
Director of Public Works.
PW-25. Precise Grading plans shall conform to applicable City of Temecula Standards subject
to approval by the Department of Public Works. The following design criteria shall be
observed:
a. Flowline grades shall be 0.5% minimum over P.C.C. and 1.00% minimum overA.C.
paving.
b. Driveway shall conform to the applicable City of Temecula Standard Number207A.
c. Concrete sidewalks and ramps shall be constructed along public street frontages in
accordance with City of Temecula Standard Number 400.
d. All street and driveway center line intersections shall be at 90 degrees.
e. Landscaping shall be limited in the corner cut-off area of all intersections and
adjacent to driveways to provide for minimum sight distance and visibility.
PW-26. The developer shall construct all public improvements outlined in these conditions to
City of Temecula General Plan standards unless otherwise noted. Plans shall be
reviewed and approved by the Department of Public Works.
• a. Improve Old Town Front Street (Local Road Standards for Old Town - 60' R/W )
to include installation of sidewalk, drainage facilities, utilities (including but not
limited to water and sewer).
b. Improve Third Street (Local Road Standards for Old Town - 60' R/W) to include
installation of paving, curb and gutter, sidewalk, streetlights and related (new)
electrical service/pedestal to service the proposed and existing streetlights,
drainage facilities, utilities (including but not limited to water and sewer).
PW-27. A construction area Traffic Control Plan shall be designed by a registered civil or traffic
engineer and reviewed by the Department of Public Works for any street closure and
detour or other disruption to traffic circulation as required by the Department of Public
Works.
PW-28. The building pad shall be certified to have been substantially constructed in accordance
with the approved Precise Grading Plan by a registered civil engineer, and the soil
engineer shall issue a Final Soil Report addressing compaction and site conditions.
PW-29. The developer shall pay to the City the Public Facilities Development Impact Fee as
required by, and in accordance with, Chapter 15.06 of the Temecula Municipal Code
and all Resolutions implementing Chapter 15.06.
PW-30. The developer shall pay to the City the Western Riverside County Transportation
Uniform Mitigation Fee (TUMF) Program as required by, and in accordance with,
Chapter 15.08 of the Temecula Municipal Code and all Resolutions implementing
• Chapter 15.08.
Prior to Issuance of Certificate of Occupancy •
PW-31. The project shall demonstrate the pollution prevention BMPs outlined in the WQMP
have been constructed and installed in conformance with approved plans and are ready
for immediate implementation.
PW-32. As deemed necessary by the Department of Public Works the developer shall receive
written clearance from Rancho California Water District, Eastern Municipal Water
District, or other affected agencies.
PW-33. Corner property line cut off shall be required per City of Temecula Standard No. 603A.
PW-34. All public improvements shall be constructed and completed per the approved plans
and City standards to the satisfaction of the Department of Public Works.
PW-35. The existing improvements shall be reviewed. Any appurtenance damaged or broken
shall be repaired or removed and replaced to the satisfaction of the Department of
Public Works.
PW-36. All necessary certifications and clearances from engineers, utility companies and public
agencies shall be submitted as required by the Department of Public Works.
•
•
Water Quality Management Plan (WQMP)
FRONTSTREETPLALA
� Appendix C
Supporting Detail Related to Hydraulic Conditions of Concern
•
•
�
OLD TOWN PLAZA
DRAINAGE STUDY
August 13, 2010
Prepared For':
Front Street Plaza, LLC
41911 Fifth Street
Temecula, CA 92590
951-491-7777 FAX 951-6973013
Contact: Bill Dalton, Managing Par[ner
• Prepared By:
HLC CIVIL ENGINEERING
28965 old TOWNFRONT STREET
Suite 315
Temewla, CA 92590
(951)506-4869
RCE STAMP
GX P. 6/30/ I 2
o QpOFESSION
�`i. f
�
� HECTOR c y\
„�'� LUCIO CORREA �
� No.363C6
` �� � CIVIL �
B u � ENGINEERIM6 � �,
Y
Hector L. orrea, RCE 36306 �� OF �AUF
•
10 YEAR DEVELOPED HYDROLOGY
•
DRAINAGE STUDY
s�rullv nxEn
The subject property consists of approximately 0.46 acres, located on the southwesterly corner of
Old Town Front Street and Third Street. The site is protected tiom off=site storm runoff by
existing street and storm drain improveme�t constructed by the City of Temecula.
EXISTINC DRAINAGE IMPROVEMENTS
Under existing conditions thc project sitc prescnNy shcct flow storm runoff into adjaccnt Murrieta
Creek. Offsite street flow also drains to Murrieta Creek via existing 48-Inch storm drain located
in Third Street .
PROPOSED DRAINAGE IMPROVEMENTS
The on-site developed storm runoff will construct a 12-Inch private storm latcral that will eonneet
into the existiog 48" storm drain located in Third Street.
See Calculations on next page
•
•
-Z-
,
]0 YEAR DEVELOPED HYDROLOGY
• RATIONAL METHOD HYDROLOGY COMPOTER PRO6RAM BASEO ON
RIVERSIDE COUNTY FLOOD CONTROL d WATER CONSERVAPION DISTRICT
(RCFC&WCD) 197fi NypROLOGY MANOAL
««««««««««««««««««<o»»»»»»»»»»»»»»»»»>»
(C) Copyright 1982,i986 Advanced Engineering So£twaze [AES]
��........DESCRIPTION OF RESOLms..+.xx...+.__....+r...�+.��:....++�.:.++_.::
� HLC *
USER SPECIFIED IlYDROLO6Y AND HYDRAOLIC MODEL INFORMATION:
OSER SPECIFIED STORM EVENT(YEAR) = i0.00
SPECIFIED M1NIMUM PIPE SIZE(INCH) = 12.00
SPECIFIED PERCENT OP GRADIENTS(DECIMAL) TO OSE FOR FRICTION SLOPL =.90
10-YEAR STORM 10-MINOTE INTEVSITY(INCH/HOUR) = 2.360
10-YEAR STORM 60-MINOTE INTGNSITY(IVCfI/HOOR) _ .880
100-YEAR STOF2M 10-MINUTE INTENSITY(INCH/HOOR) = 3.980
100-YEAR S1'ORM 60-MINUTE INTENSITY(INCH/HOOR) = 1.300
SLOPE OF 10-YEAR INPENSITY-DORATION CORVE _ .5505732
SLOPE OF 100-YEAR INTEVSITY-DORATION CORVE _ .5995536
COM?OTED RAINFALL INTENSITY 9ATA: �
STORM EVENT = 10.00 1-HOOR INTENSITY(INCH/HOOR) _.BBBB
SLOPE OP INTENSITY DORATION CURVE _.SSC6
RCFC&WCD HYDROLOGY MANOAL "C"-VALOES USED
� ««««««««««««««««««<U»»»>»»»»»»»»»»»»»»»
AdvdnC2d Engineering SOftwdrE [AE$]
SERIAL No. 100971
VER. 3.3C RELEASE OATE: 2/20/86
««G«<G G««««G«<G <G G«<G GGG«<G U»»»»»»»»»»>»»»»»»»»
��FLOW�PROCESS�FROM�NODE��� �1�OO�TO�NODE�����2�OO�IS�CODE� 2������������
»»>RATIONAL METHOD INITIAL SOBAREA ANALYSIS««<
_________________________________________________________ _
ASSUMED 1N147AL SUBAREA ON1k012M
DEVELOPMENT 1S COMMERCIAL
TC = K*[(LEN6TH**3)/(ELEVATIOV CHANGE)]°`.2
INITIAL S[1BAREA FLOW-LENGTH = 225.00
OPSTREAM ELEVATION = 1006.60
DOWNSTREAM ELEVATION = 1003.00
ELEVATION DIFFERENCE = 3.60
TC = .303*[� 225.00T'3)/( 3.60)] " .2 = 6.098
10.00 YrAR RAINFALL INTENSITY(1NCH/HOOR) = 3.199
SOIL CLASSIFICATION I$ "B"
COMh1ERCIAL DEVELOPMENT RUNOFF COEFFICIENT = .8775
SOBAREA RONOFF(CFS) = 1.91
TOTAL AREA(ACRES) _ .51 TOTAL RUNOFF(CFS) = 1.91
____________________________________________________ _ ___ __ _ __ _ _
E�D OF E2P.T10NAL METHOD ANALYSIS
•
-3-
100 YEAR DEVELOPED HYDROLOGY
• RATIONAL METHOD I3YDROLOGY COMPOTER PROGRA.M BASED ON
AIVERSIDE COUNTY FLOOD CONTROL 6 WATER CONSERVATIOV �ISTRICT
(RCFCSWCD) i978 HYDROLOGY MANOAL
<G«««««««««««««««««<o»»»»»»»»»>»»»»»»»»»
(C) Cooyzight 1982,1986 Advanced Engineering Sof[wzre [AES]
"'**'+"`OESCRIPTION OF HESUL'PS****'xK..++xx,..=x�xr=xxxx.»x....�_.+...-.+._
* PRONT STREET PLAZA 100 YR '
OSER SPECIFIED HYOROLOGY AND HYDRAOLIC MODEL 1NFORMATION:
OSER S?ECIFILD STORM EVENT(YEAR) = 100.00
SPECIFIED MINIMOM PIPE SIZE(INCH) = 12.00
S2ECIFIED PERCENT OF GRADIENTS(�ECIMAL) TO OSE FOR FRICTION SLOPE _.90
10-YEAR STORM 10-MINOTE SVTENSITY(INCH/HOOR) = 2.360
10-YEAR STOF2M 60-M1NU'PE 1NTENSITY�INCH/NOOR) _ .880
100-YEAR SPOFtM 1C-MINUTE INTENSITY(INCH/HOOR) = 3.980
100-YEAR STORM 60-MIVUTE INTENSITY(1HCH/HOUR) = 1.300
SLO?E OF 10-YEAR INTENSITY-DUAATION WRVE _ .5505732
SLO?E OF 100-YEAR INTENSITY-DOAATION CURVE _ .5995536
COMPOTED RAINFALL INTENSITY DATA:
STORM EVEVT = 100.00 1-HO[JA INTENSITY(INCH/HOOR) = 1.3000
SLOPE OF INTENSITY DURATION CURVE _.5996
RCFC&WCD HYDROLOGY MANUAL "C"-VALOES ❑SED
� «««U««U«««««««««<U«U»»»»»»»»»»»»»»»»»»>
Advancetl Engineering Software [AES]
SERIAL No. 100971
VER. 3.3C RELEASE DATE: 2/20/86
«<GG«««««GG<G«<G GGG<G GGGGGG<G<U»»»»»»»»»»»>»»»»»»»
��FLOW�PROCESS�FROM�NO�E�� ��1�00 TO�NODE �2�00 IS�CODE�=���2������������
»»>RATIONAL METHOD INITIAL SOBAREA ANALYSIS««<
___________________________________________________________
ASSOMEO INITIAL SOBAREA ONIFORM
DEVELOPMENT IS COMMERCIAL
TC = K'[(LENGTI9**3)/(ELEVATION CIIANGE)]** 2 '
INITIAL SJBAREA kLOW-LBNG'PH = i50.00
UPSTREAM ELEVATION = 1004.30
DOWNSTREAM ELEVATION = �i003.90
ELEVATIOH DIFFEAENCE _ .90
TC = .303*[( 150.00°*3)/� .90)]**.2 = 6.257
100.00 YEAR RAIHFALL INTENSITY(INCH/HOOR) = 9.503
SOIL CLASSIFICATION IS "B"
COMMERCIAL DEVELOPMENT RONOFF COEFPICIE'NT = .8830
SUBAREA RUNOFk(CFS) = 1.83
TOTAL AREA(ACRES) _ .96 TOTAL RONOFF(CFS) = 1.83
___________________________________ _ _ __ _ ___ _ ___ _ _ __ _ _ __ ___
END OF RATIONAL METHOD ANALYSIS
•
-4-
HYDRAULIC CALCULATIONS
• 12-INCH SD____________________________________________________________
HYDRAOLIC ELEMENTS - I PROGRAM PACKAGE
««G<U«G«««««««««««««O»»»»»»»»»»»>D»»»>D»»>
Ativanced Engineering So`.tware (AES]
SEAIAL NO. 10612I
VER. 2.3C RELEASE DATE: 2/20/86
««««««««««««««««««<o»»>»»»»»»»»»»»»»»
.+.*» OF' RESULTS..+_«.+..*..�x+.�.*.�++.++xx+.......�.+.*+,...
* 2 YR 24 HR STORM *
»»PIPEFLOW�HYDRAOLIC�INPOT�INB'ORMATION««����������������������_���������
PIPE �IAMETER(FF:ET) = 12.000
PIPE SLOPE(FEET/FEET) _ .0100
PIPEFLOW(CFS) _ .09
MANNINGS FRICTION FACTOR = .012000
__ ___________________________________________________ _
CRITICAL-OEPTH FLOW INFOR.MATION:
CRITICAL DEPTH(FEET) _ .06
CRITICAL FLOW AREA(SQOARE FEET) _ .076
CRITICAL FLOW TOP-WIDTH�FEET) = 1.760
CRITICAL PLOW PRESSORE + MONENTOM(POONDS) _ .33
CRITICAL FLOW VELOCITY�FEET/SEC.) = 1.181
CRITICAL FLOW VELOCITY HEAD(FEET) _ .02
CRITICAL FLOW HYDRAOLIC DEPTH(FEET) _ .09
CRITICAL FLOW S?ECIFIC ENERGY(FEET) _ .C9
• NORMAL-DEPTFI FLOW INFORINATION:
NORMAL DE2TH(F�ET) _ .06
FLOW AAEA(SQOARE FEET) _ .06
FLOW TOP WIDTH(FEET) = 1.660
FLOW PRESSORE + MOMENTOM(POON�S) _ .3q
FLOW VELOCITY(FEET/SEC.) = 1.409
FLOW VELOCITY HEAD�FEET) _ .031
HY�RApLIC DEPTH(FEET) _ .09
FROODE NOMHER = 1.265
5?ECIFIC ENERGY(FEET) _ .09
.+x...++.xDESCR1PT10N OF RESOL'PS'.+.� .............�.....+�.....+:_.�...r+...
" 10 YEAA 29HR *
»»PIPEFLOW�HYDRAOLIC INPOT�INPORMATION««��������������������������������
______________'_____'____'_______________'___________________________'______
PIPE DIAMETER�FEEY') = 12.000
PIPE SLOPE(FEE'S/FEET) _ .0?00 �
PIPEFLOW(CFS) _ .17
MANNINGS FRICTION FACTOR = .012000
___ _ _ _ __ _ _ __ _ ____ ___________________________ _ __ _ ____ _ _______
__ _ _ _ ____________________________________ _ _ ____ _ __ _ ______________
CRITICAL-DEP7'H FLOW INFORMATION:
_________________________'_______________________________'__________________
CRITICAL DEPSH�FEET) _ .09
CRITICAL FLOW AREA(SQUARE FEET) _ .123
CRITICAL FLOW TOP-WIDTH(FEET) = 2.061
CRITICAL FLOW PRESSORE + MOMENTOM�POONDS) _ .79
• CRITICAL FLOW VELOCITY(P'EET/SEC.) = 1.385
CRITICAL FLOW VELOCITY HEAD(FEET) _ .03
CRITICAL FLOW HYDRAULIC DEP2H(FEET) _ .O6
- 5 -
� FRONT STREET PLAZA- 2YEAR 24 HOUR PRE/POST
CONDITION
0 n i C H y d r o g i a o h A n a 1 y s i s
Copyright (c) CrvILCAD�/CIVILDESIGN, 1989 - 2008, Version 8.1
Study date OB/13/10 File: 3RD292.out
++++++++++---++++++>+-+++++>++++++++s?+++++-i++++++?+++?+ss+++++s-+++++-
Riverside County Synthetic Onit Hydrology Method
RCFC 6 WCD Manual date - April 1978
Progrzm License Serial Number 6191
English (in-lb) Input Units Used
English Rain:all Data IInches) Input Values Osed
English Onits used in output format
FRON1' STREET ?LA2A
2YR
• ____________________________________________________________________
Drainage Area = 0.961AC.) 0.001 Sq. Mi.
Dcainage Area fox Denth-AZea Aredl Adjustment = 0.46(AC.) O.001 Sq.
Mi
Length along longes[ watercourse = 150.00(Ft.)
Length along longes[ wateccourse :neasuied to centroid = 75.00(Ft.)
Length along longes[ wateccourse = 0.028 Mi.
Length along longest watercourse measured to cen[roid = C.014 Mi.
9ifference in elevation = 1.00(Ft.)
Slope along watercourse = 35.2000 Ft./Mi.
Average Manning's 'N' = 0.015
Lag time = 0.009 Hr.
Lag time = 0.56 Min.
25� of lag time = 0.19 Min.
90$ o£ lag time = 0.23 Min.
Onit time = 10.00 Min.
Duration of stozm = 29 Houcls)
Oser Entered Base Flow = 0.00(CFS)
2 YEAR Area rainfall data:
Area(AC.)[1] Rain�all�In)CZ1 Weighting[1°2]
0.96 ?.80 0.83
100 YEAR Acea rainfall data:
Area(AC.)[1] Rainfall�In)[2] Weighting[1°2]
0.96 9.50 2.07
STOAM EVENT (YEAR) = 2.00
Area Averaged 2-Year Rainfall = 1.800(ln)
Area Averaged ':00-Yeai Rainfall = 4.SOO�In)
• Point rain (area averaged) = 1.800(In)
Areal adjustment factor = 100.00 8
Adjusted avezage point rain = 1.800(In)
_ g '
• Sub-Area �ata:
Aiea(AC.) Runof`_ Index Impervious 8
0.960 20.00 0.960
Total Acea Entecetl = 0.4o(AC.)
RI RI Infi!. Rate Impervious Adj. Infil. Rate Acea% F
AMC2 AMC-2 (In/Iir) (Dec.�) (In/1{i) (Dec.) (In/Hr)
20.0 20.0 0.890 0.960 0.119 1.000 0.119
Sum (F) = 0.119
Area averaged mean soil loss �F) (In/Hr) = 0.119
Minimum soil loss rate ((In/Hr)) = 0.057
(for 29 hour storm tluration)
Soi1 low loss cate (decimal) = 0.130
0 n i t H y d c o g r a p h
VALLEY S-CUrve
Onit Nydrograph Data
Onit time period Time � of lag Distcibution Unit Hydrograph
(hrs) Graph & (CFS)
1 0.167 1779.815 100.000 0.969
Sum = 100.000 Sum= 0.969
The following loss rate calculaCions reflec[ use of the minimum calculated loss
rate subtracted from the Storm Rzin [o produce the maximum Effective Rain value
Unit Time Pattern Storm Rain Loss ra[e(In./Hr) Effective
(Hr.) Perrent (In/Hr) Max I Low IIn/HC)
� 1 0.17 0.1� 0.018 ( 0.202) 0.002 0.016
2 0.33 0.17 0.018 ( 0.201) 0.002 0.016
3 0.50 0.17 C.018 ( 0.199) 0.002 0.016
9 0.67 0.23 0.025 ( 0.197) 0.003 0.022
5 0.83 0.23 0.025 ( 0.196) 0.003 0.022
6 1.00 0.23 0.025 ( 0.199) 0.003 0.022
7 1.17 0.20 0.022 ( 0.193) 0.003 0.019
8 1.33 0.20 0.022 ( 0.191) 0.003 C.019
9 1.50 0.20 0.022 ( 0.190) 0.003 C.019
i0 1.67 0.23 0.025 ( 0.188) 0.003 0.022
i1 1.83 0.23 0.025 ( 0.187) 0.003 0.022
i2 2.00 0.23 O.C25 ( 0.185) 0.003 0.022
i3 2.17 0.27 0.029 ( 0.':89) O.009 0.025
19 2.33 0.27 0.029 ( 0.182) 0.009 0.025
15 2.50 0.27 O.C29 ( 0.181) O.009 0.025
16 2.67 0.33 0.036 ( 0.179) O.COS 0.03i
i7 2.83 0.33 O.C36 ( O.i78) 0.005 0.031
18 3.00 0.33 0.036 ( O.i76) O.COS 0.03_
19 3.17 0.33 0.036 ( 0."_75) O.COS 0.03i
20 3.33 0.33 0.036 ( 0.173) 0.005 0.03i
21 3.50 0.33 0.036 ( 0.':72) O.COS 0.03_
22 3.67 0.37 0.090 ( 0.?71) O.COS 0.039
23 3.83 0.37 0.090 ( O.i69) O.COS 0.034
29 9.00 0.37 0.090 ( 0.168) 0.005 0.034
25 9.17 0.93 0.097 ( 0.?66) 0.006 C.041
26 9.33 0.93 O.C97 ( 0.165) 0.006 0.041
27 9.50 0.93 0.097 ( 0.?63) 0.006 C.091
28 9.67 0.50 O.C59 ( 0.162) 0.007 0.047
29 9.83 0.50 0.059 ( 0.161) 0.007 0.097
30 5.00 0.50 0.059 ( 0.159) 0.007 0.097
31 5.17 0.93 0.097 ( 0.158) 0.006 0.091
32 5.33 0.93 0.097 ( 0.157) 0.006 0.091
33 5.50 0.93 O.C97 ( 0.155) 0.006 0.041
39 5.67 0.53 0.058 ( 0.159) 0.007 0.050
35 5.83 0.53 0.058 ( 0.?52) 0.007 0.050
• 36 6.00 0.53 0.058 ( O.i51) 0.007 0.050
37 6.17 C.60 0.065 ( O.i50) 0.006 0.056
38 6.33 C.60 0.065 ( 0.198) 0.008 0.056
39 6.50 0.60 0.065 ( 0.197) 0.008 0.056 �
- 9 -
• 90 6.67 0.67 0.072 ( C.i96) 0.009 0.063
91 6.83 0.67 0.072 ( 0.�95) 0.009 0.063
92 7.00 0.67 0.072 ( 0._93) 0.009 0.063
93 7.17 0.70 0.076 ( 0.192) 0.010 0.066
99 7.33 0.70 0.0�6. ( O.i91) 0.010 0.066
95 7.50 0.�0 O.C�b ( 0.139) 0.010 0.066
96 7.67 0.83 O.C90 ( O.i38) 0.012 0.078
97 7.83 0.83 O.C90 ( 0.137) 0.012 0.078
98 B.00 0.83 0.090 ( 0.136) 0.012 0.078
99 8.17 1.00 0.108 ( 0.134) 0.014 0.099
50 8.33 1.00 0.108 ( C.133) 0.014 0.099
51 8.50 1.00 0.108 ( C.132) 0.019 0.099
52 8.67 1.1C 0.119 ( 0.131) 0.015 0.103
53 8.83 1.10 O.119 ( C.129) 0.015 0.103
59 9.00 1.10 0.119 ( 0.128) 0.015 0.103
55 9.17 1.30 0.190 ( 0.127) 0.018 0.122
56 9.33 1.30 0.190 ( 0.126) 0.018 0.122
57 9.50 1.30 0.190 ( 0.129) 0.018 0.122
58 9.67 1.93 0.155 ( 0.1231 . 0.020 0.135
59 9.83 i.93 0.155 ( 0.122� 0.020 0.135
60 '_0.00 1.93 0.155 ( 0.121) 0.020 0.135
61 10.17 i.00 0.108 1 0.120) 0.014 0.099
62 i0.33 i.00 0.108 � O.li9) 0.019 0.099
63 10.50 1.00 O.1C8 � 0.117) 0.019 0.099
64 10.67 1.33 0.199 � 0.116) 0.019 0.125
65 10.83 1.33 0.199 � 0.115) 0.019 0.125
66 11.00 1.33 0.199 � 0.119) 0.019 0.125
67 11.17 1.27 0.13� ( 0.113) 0.018 0.119
68 11.33 L27 0.137 � 0.112) 0.018 0.?19
69 11.50 1.27 0.13� � 0.111) 0.018 0.119
70 11.67 1.17 0.126 ( 0.110) 0.016 O.i10
71 11.93 1.17 0.126 ( 0.109) 0.016 O.i10
72 12.00 1.17 0.126 ( 0.107) 0.016 0.�10
73 12.17 1 JO 0.189 ( 0.106) 0.029 0.160
79 12.33 1JO 0.189 ( 0.105) 0.029 0.160
• 75 12.50 1 JO 0.189 ( 0.109) 0.029 0.160
76 12.6� 1.90 0.205 ( 0.103) 0.027 O.119
77 12.83 1.90 0.205 ( 0.102) 0.027 0.179
78 13.00 1.90 0.205 ( 0.101) 0.027 O.119
79 13.17 2.27 C.295 ( 0.100) 0.032 0.213
80 13.33 2.2� 0.295 ( 0.099) 0.032 0.213
81 13.50 2.27 0.295 ( 0.098) 0.032 0.213
82 13.67 1.53 0.166 ( 0.097) 0.022 0.199
83 13.83 1.53 0.166 ( 0.096) 0.022 0:199
89 19.00 1.53 0.166 ( 0.095) 0.022 0.194
85 19.17 1 J7 C.191 ( 0.099) 0.025 0.166
86 19.33 1.77 0.191 ( 0.093) 0.025 0.166
87 19�.SC 1.77 C.191 ( 0.092) 0.025 0.166
88 19.67 1.70 0.189 ( 0.091) 0.029 0.160
89 19.83 1.70 C.189 ( 0.090) 0.029 0.160
9C 15.00 1 JO C.189 ( 0.089) 0.029 0.160
91 15.17 1.57 0.169 ( 0.089) 0.022 0.197
92 15.33 1.57 0.169 ( 0.088) 0.022 0.197
93 15.50 1.5� 0.169 ( 0.087) 0.022 0.197
99 15.67 1.27 C.137 ( 0.086) 0.018 0.119
95 15.83 1.27 O.i37 ( 0_085) 0.018 0.119
96 16.00 1.27 0.137 ( 0.099) 0.018 0.119
97 16.17 0.2� 0.029 ( 0.083) 0.009 C.025
98 16.33 0.2"1 0.029 ( 0.082) 0.009 0.025
99 16.50 0.2� 0.029 ( 0.082) 0.009 0.025
100 16.67 0.20 0.022 ( 0.081) 0.003 0.019
101 16.83 0.20 0.022 ( 0.090) 0.003 0.019
102 17.00 0.20 0.022 ( 0.079) 0.003 0.019
103 17.17 0.33 0.036 ( 0.078) 0.005 0.031
109 17.33 0.33 0.036 � 0.078) 0.005 0.031
105 17.50 0.33 0.036 1 0.077) 0.005 0.031
106 17.67 C.30 0.032 ( O.C76) 0.009 0.028
107 17.83 0.30 0.032 � 0.075) 0.009 0.028
108 18.00 0.30 0.032 ( 0.079) 0.009 0.028
109 18.17 0.27 0.029 ( 0.079) 0.009 0.025
• 110 18.33 0.27 0.029 ( 0.073) 0.009 0.025
111 18.50 0.27 0.029 ( 0.072) 0.009 0.025
112 18.67 O.11 0.018 ( 0.072) 0.002 0.016
113 18.83 0.17 0.018 ( 0.071) . 0.002 0.016
- ]�-
• 119 19.00 0.17 0.018 ( 0.070) 0.002 0.016
115 19.17 0.23 0.025 ( 0.070) 0.003 0.022
116 19.33 0.23 0.025 ( 0.069) O.003 0.022
117 19.50 0.23 0.025 ( 0.068) 0.003 0.022
118 ?9.67 0.17 0.018 ( 0.068) O.002 0.016
119 19.83 0.17 0.018 ( 0.067) 0.002 0.016
120 20.00 0.17 C.018 ( 0.060) 0.002 0.016
121 20.':7 0.20 0.022 ( 0.0661 0.003 0.019
122 20.33 0.20 0.022 ( 0.0651 0.003 0.019
123 20.50 0.20 0.022 ( 0.065) 0.003 0.019
129 20.67 0.17 0.018 ( 0.064) 0.002 0.016
125 20.83 0.17 0.0?8 ( 0.069) 0.002 0.016
126 21.00 0.17 O.Oi6 � 0.063) 0.002 0.016
127 21.17 0.17 O.C18 ( 0.063I 0.002 0.016
128 21.33 0.17 0.018 � 0.062) 0.002 0.016
129 21.50 O.11 0.018 � 0.062) 0.002 0.016
130 21.67 0.17 0.018 � 0.061) 0.002 0.016
131 21.83 0.17 0.018 � 0.061) 0.002 0.016
132 22.00 O.11 0.018 ( 0.060) 0.002 0.016
133 22.17 O.11 0.018 ( 0.060) 0.002 0.016
139 22.33 0.17 0.018 ( 0.060) C.002 0.016
135 22.50 0.'_7 0.018 ( 0.059) 0.002 0.016
136 22.67 0.13 0.019 ( 0.059) 0.002 0.013
137 22.83 0.13 0.019 ( 0.059) 0.002 0.013
138 23.00 0.13 0.019 ( 0.058) O.0O2 0.013
139 23.17 0.13 0.019 ( 0.058) 0.002 O.Oi3
190 23.33 0.13 0.019 ( 0.058) 0.002 O.C"_3
191 23.50 0.13 0.019 ( O.OSfi) 0.002 0.013
192 23.67 0.13 0.019 ( 0.057) 0.002 0.013
193 23.83 0.13 0.019 ( 0.057) 0.002 0.013
199 29.00 0.13 0.019 ( 0.057) 0.002 0.013
(LOSS Rate Not Osed)
Sum = ?00.0 Sum = 9.4
Flood volume = Ef`_ective rainfall 1.57(In)
times acea 0.5(AC.)/[(In)/(Ft.1] = 0.1(AC.�[)
• Total soil loss = 0.23(In)
Total soil loss = 0.009(AC.Ft)
Total rainfall = 1.80�In)
P'lood volome = 2619.9 Cubic Feet
Total soil loss = 390.7 Cubic Feet
Peak £low rate of [his hydrograph = 0.099(CFS)
++:++++++++++-c++++++t+++++±>++++++++++++++r+++++++++++++++.++++++.+
24 - H O U R 5 T 0 R M
R u n o f f Ii y d r o g r a p h .
Hydrograph in 10 Minute intervals ((CFS))
Timelh+m) Volume Ac.Ft Q(CFS) 0 2.5 5.0 7.5 10.0
0+10 0.0001 0.01 q I I I I
0+20 0.0002 0.01 q I I I I
0+30 0.0003 0.01 Q I I I I
0+90 0.0009 0.01 p I I I I
0+50 0.0006 0.01 Q I I I I
1+ 0 O.00C7 0.01 q I I I I
1+10 0.0008 0.01 q I I I I
1+20 0.0010 0.01 q I I I I
1+30 0.0011 0.01 Q I I I I
1+90 0.0012 0.01 Q I I I I
1+50 0.0019 0.01 Q I I I I
2+ 0 0.0015 0.01 QV I I I I
2+10 0.0017 0.01 qV I I I I
2+20 0.0018 0.01 qV I I I I
2+30 0.0020 0.01 QV I I I I
2+90 0.0022 0.01 QV I I I I
2+50 0.0029 0.01 QV I I I I
3+ 0 0.0026 0.01 QV I I I I
• 3+10 0.0028 0.01 QV I I I I
3+20 0.0030 0.01 QV I - I I I
3+30 0.0032 0.01 Q V I I I (
3+90 0.0039 0.02 Q V I I I I
_ � � _
• 3+50 0.0036 0.02 Q V I I I I
4+ 0 0.0038 0.02 Q V I I 1 I
9.10 0.0091 0.02 Q V I I I I
9+20 0.0099 C.02 Q V I I I I
9+30 0.0096 0.02 Q V I I I I
9+90 0.0049 0.02 Q V I I I I
9+50 0.0052 0.02 Q V I I I I
5+ 0 0.0055 0.02 Q V I I I I
5+10 0.0058 0.02 Q V I I I I
S+pO 0.0060 0.02 Q V I I I I
5+30 0.0063 0.02 Q V I I I I
5+90 0.0066 0.02 Q V I I I I
5+50 0.0069 0.02 Q V I I I I
6+ 0 O.0073 0.02 Q V I I I I
6s10 0.0076 0.03 Q V I I I I
6+20 O.0080 0.03 Q V I I I I
6+30 0.0083 0.03 Q V I I I I
6+90 0.008� 0.03 p V I I I I
6+50 0.0091 O.C3 Q V I I I I
7+ 0 0.0095 O.C3 Q V I I I I
7+10 0.0100 0.03 4 v I I I F
7+20 0.0109 0.03 Q V I I I I
7+30 0.0108 0.03 Q V I I I I
7+90 0.0113 0.09 q V I I I I
7+50 0.0118 0.09 Q V I I I I
8> 0 0.0123 0.09 Q V I I I I
8+10 0.0129 0.09 Q V I I I I
B+pO 0.0135 0.09 Q VI I I I
8+30 0.0191 0.09 Q VI I I I
8+40 0.0198 0.05 Q VI I I I
5+50 0.0159 0.05 Q V I I I
9+ 0 0.0161 0.05 Q V I I I
9+10 0.0169 0.06 Q V I I I
9+20 C.0176 0.06 Q IV I I I
9+30 0.0184 0.06 Q I V I I I
• 9+90 0.0193 0.06 Q I V I I I
9-50 0.0202 0.06 Q I V I I I
10+ 0 0.0210 0.06 Q I V I I I
10+10 0.0216 0.09 Q I V I I I
10+20 0.0222 0.09 Q I V I I I
10+30 0.0228 0.09 Q I V I I I
10+40 0.0236 0.06 Q � V I I I
10+50 0.0299 0.06 Q I V I I I
11+ 0 0.0252 0.06 Q I V I I I
11+10 0.0260 0.06 Q I v I I I
11+20 0.0267 0.06 4 I V I I I
11+30 0.0275 0.06 Q I V I 1 I
11+90 0.0282 0.05 Q I V I I I
?1+50 0.0289 0.05 Q I VI I I
i2+ 0 0.0296 0.05 Q I VI I I
12+10 0.0306 0.07 Q I V I I
12z20 0.0316 0.07 q I V I I
12z30 0.0327 0.07 q I IV I I
12+90 0.0338 0.08 Q I I V I I
12-50 0.0399 0.08 Q I I V I I
13+ 0 0.036_ 0.08 Q I I V I I
13+10 0.0379 0.10 Q I I V I I
13+20 0.0388 0.10 Q I I V I I
13+30 0.0902 0.10 Q I I V I I
13+90 0.0911 0.07 Q I I V I I
13+50 0.0920 0.07 Q I I V I I
19+ 0 0.0929 0.07 Q I I V I I
19+10 0.0990 0.08 Q I I VI I
19+20 0.0950 0.08 Q � I V I
19+30 0.0961 0.08 Q I I V I
19+90 0.0971 0.07 Q I I IV I
19+50 0.0981 0.07 Q I I I V I
15+ 0 0.0992 0.0� 4 I I I v I
15+10 0.0501 0.0� Q I I I V I
15+20 0.0510 0.07 Q I I I V I
• i5+30 0.0520 0.07 Q I I I V I
15+90 0.0527 0.06 Q I I I V I
15+50 0.0535 0.06 q I I I V �
16= 0 0.0593 0.06 Q I I I V I
_12_
• i6+io o.os9a o.oi Q i i i v i
i6+zo o.osae o.oi Q i i i v i
16+30 0.0597 0.01 Q I I I V I
16+90 0.0599 0.01 Q I I I V I
16+50 0.0550 0.01 Q I I I V I
17+ 0 0.0551 0.01 Q I I I V I
17+10 0.0553 0.0'. Q I I I � I
17+20 0.0555 O.C1 Q I I I V I
17+30 0.0557 0.01 Q I I I V I
17t90 0.0559 0.01 Q I I I V I
17-50 0.0561 0.01 q I I I V I
18+ 0 0.0562 0.01 Q I I I V I
18r10 0.0569 0.01 Q I I I V I
18+20 0.0566 0.01 Q I I I V I
18+30 0.0567 0.01 Q I I I V I
18+40 0.0568 0.01 Q I I I V I
18+50 0.0569 0.01 Q I I I V I
19+ 0 0.0570 0.01 Q I I I V I
19+10 0.0572 0.01 Q I I I V I
19+20 0.0573 0.01 4 I I I V I
19+30 0.0579 0.01 Q I I I V I
19+90 0.0575 0.01 Q I I I V I
19+50 0.0576 0.01 Q I I I V I
20+ 0 0.0577 0.01 Q I I I V I
20+10 0.0579 0.0: Q I I I V I
20+20 0.0580 O.Ci Q I I I V I
20�30 0.0581 0.01 Q I I I V I
20+40 0.0582 0.01 Q I I I V I
20+50 0.0583 0.01 Q I I I V I
21+ 0 0.0584 0.01 q I I I V I
21+'_0 0.0585 0.01 Q I I I V I
21+20 0.0586 0.01 Q I I I VI
21+30 0.0587 0.01 Q I I I VI
21+9p 0.0588 0.01 Q I I I VI
21+50 0.0589 a.01 Q I I I �I
• 22+ 0 0.0590 0.01 Q I I I V�
22+10 0.0591 0.01 Q I I I VI
22+20 0.0592 0.01 Q I I I VI
22+30 0.0593 0.01 4 I I I VI
22+90 0.0599 0.01 Q I I I VI
22+50 0.0595 0.01 Q I I I VI
23s 0 0.0595 0.0? Q I I I VI
23-10 0.0596 0.0_ Q I I I VI
23-20 0.0597 O.C1 Q I I I VI
23+30 0.0598 0.01 Q I I I VI
23r40 0.0599 0.01 Q I I I VI
23+50 0.0599 0.01 Q I I I VI
29+ 0 0.0600 0.01 Q I I I V
•
-13-
� FRONT STREET PLAZA-10 YEAR 24 HOUR PRE/POST
CONDITION
0 n i[ H y d r o g r a p h A n a 1 y s i s
COpy[ight (C) CIVILCADD/CNILOESIGN, �i989 - 2008, Version B.1
Study date 08/13/10 File: 3RD2910.ou[
+++>++++++s-+++++--+++++s+++++—+++++++>++++++-+++++sa+++++++++++<+++++
Riverside County Synthetic Onit Hydzology Method
RCFC & WC� Manual date - April :978
Program License Serial Number 6191
English (in-lb) Input [Jnits [JSed
English Rainfall Data (Inches) Input Values Used
English Uni[s used in output format
FRONT STREET PLAZA
lOYR
• ______________________________'_'______________________________'____
Drainage Area = 0.96�AC.) 0.001 Sq. Mi.
, Drainage Area for Dep[h-Area Areal Adjustment = C.96(AC.) = 0.001 Sq.
Mi.
Length along longest watesourse = 150.00(Ft.)
Length along longest watercourse measured to centroid = 75.00(FL �
Length along longest watezcourse = 0.028 Mi.
Length along longest watercourse measured to centroid = 0.019 Mi.
Diffeeence in elevation = 1.00(Ft )
Slope along watercourse = 35.2000 Ft./Mi.
Average Manning's 'N' = O.CiS
Lag time = 0.009 Hr.
Lag time = 0.56 Min.
258 of lag time = 0.19 Min.
908 of lag time = 0.23 Min.
Onit time = 10.00 Min.
Duration of storm = 29 Houi(s)
Oser Pntered Base Flow = 0.00(CFS)
2 YEAA Area rain:all data:
Area(AC.)[1] Rainfall(In1[2] Weighting[1*2]
0.96 1.80 0.83
100 YEAR Area rainfall data:
Acea(AC.)[1] Rainfall(In)[2] Weighting[1'2]
0.96 9.50 2.07
STORM EVENT (YEAR) = 10.00
Area Averaged 2-Year Rainfall = 1.800�In)
Area Averaged i00-Year Aainfall = 9.500(In)
• Point rain (area averaged) = 2.9ll(ln)
Area1 adjustment factor = 100.00 %
-14-
• AdjuSCed avera9e Point rain = 2.91111n)
Sub-Area Data:
Area(AC.) Runo:f Index Imoervious &
0.960 20.00 0.960
Totdl Area EnterEd = 0.961AC.)
RI RI In:il. Rate Impecvious Adj. Infil. Rate Area$ F
AMC2 AMC-2 (In/Hx) (Dec.�) (ln/Hr) (Dec.) (In/HC)
20.0 20.0 0.890 0.960 0.119 1.000 0.119
Sum (F) = 0.119
Area averaged mean soil loss (F) (In/Hr) = 0.119
Minimum soil loss rate ((In/Hr)) = 0.057
(foc 29 houz storm ducation)
Soil low loss iate (decimal) = 0.13C
U n i t H y d r o g r a p h
VALLEY S-Cucve
Onit Hydxograph Data
________________________________________'___________________"'______
Unit time oeriod Time a of lag Distribution Onit Hydrograph
(hcs) Gcaph $ (CFS)
1 0.167 1779.815 100.000 0.969
Sum = 100.000 Sum= 0.969
The following loss rate calculations reflect use of the minimum calculated loss
rate sub[rac[ed from the Storm Rain to ncoduce the mazimum Effec[ive Rain value
Unit Time Pattern Stocm Rdin Loss rate(In./I3r) Effective
� (Hr.) Percent (In/HC) Max I Low (In/Hi)
1 0.17 0.17 0.029 1 0.202� O.009 0.025
2 0.33 0.17 0.029 1 0.202) O.009 0.025
3 0.50 0.17 0.029 � 0.199) 0.009 0.025
9 0.67 0.23 0.091 � 0.19"1) 0.005 0.035
5 0.83 0.23 0.091 � 0.196) 0.005 0.035
6 1.00 0.23 0.091 � 0.199) 0.005 0.035
7 1.17 0.20 0.035 � 0.193) 0.005 0.030
8 1.33 0.20 0.035 � 0.19�) 0.005 0.030
9 1.50 0.20 0.035 � 0.190) 0.005 0.030
10 1.67 0.23 0.091 � 0.188) 0.005 0.035
11 1.83 0.23 0.091 � 0.187) O.00S 0.035
12 2.00 0.23 0.091 � 0.185) O.00S 0.035
13 2.17 0.27 0.097 � 0.189) O.006 0.091
19 2.33 0.27 0.097 1 0.182) O.006 0.091
15 2.50 0.27 0.097 � 0.181) 0.006 0.091
16 2.67 0.33 0.058 � O.119) 0.008 0.051
17 2.93 0.33 0.058 � 0.178) 0.008 0.051
18 3.00 0.33 0.058 � 0.176) 0.008 0.051
19 3.17 0.33 0.058 � 0.1751 0.008 0.051
20 3.33 0.33 0.058 � 0.173� 0.008 0.051
21 3.50 0.33 0.058 1 0.172� 0.008 0.051
22 3.67 0.37 0.069 � 0.17i) 0.008 0.056
23 3.83 0.37 0.064 ( O.lo9) 0.008 0.056
29 9.00 0.37 0.064 ( 0.168) O.COB 0.056
25 9.17 0.93 0.076 � 0.166) 0.010 0.066
26 9.33 0.93 0.076 ( 0.165) O.CiO 0.066
27 9.50 0.93 0.076 ( 0.163) 0.010 0.066
28 9.67 0.50 0.087 ( O.i62) 0.0":1 0.076
29 9.83 0.50 0.087 ( 0.161) O.Oi1 0.076
30 5.00 0.50 0.087 ( 0.159) 0.011 O.C76
31 5.17 0.93 0.076 ( 0.158) 0.010 0.066
32 5.33 0.93 0.076 ( 0.?57) 0.010 0.066
33 5.50 0.93 0.076 ( O.i55) 0.010 O.C66
39 5.67 0.53 0.093 ( 0.�59) 0.012 0.081
• 35 5.83 0.53 0.093 ( 0.152) 0.0?2 0.081
36 6.00 0.53 0.093 ( 0.151) O.Oi2 0.081
37 6.i7 0.60 0.105 ( C.150) 0.019 0.091
36 6.33 0.60 0.105 ( O.i98) O.Oi9 0.091
-15-
• 39 6.50 0.60 O.i05 ( C.197) 0.019 0.091
90 6.67 0.67 0.116 ( 0.196) 0.015 0.101
91 6.83 0.67 0.116 ( 0.195) 0.015 0.101
92 �.00 0.67 C.116 ( 0.193) 0.015 0.101
93 �.?7 0.70 C.122 ( 0.192) 0.016 0.106
49 7.33 0.70 0.122 ( 0.191) 0.016 0.106
45 7.50 0.70 0.122 ( 0.139) 0.016 0.106
46 7.67 0.83 0.146 ( 0.138) 0.019 0.127
47 7.83 0.83 0.146 ( 0.137) 0.019 0.127
98 9.00 0.83 0.196 ( 0.136) 0.019 0.127
49 8.17 '_.00 0.175 ( 0.139) 0.023 0.152
50 8.33 L CO 0.175 � 0.133) 0.023 0.152
51 8.50 ?.00 0.175 ( 0.132) 0.023 0.152
52 8.67 1.10 0.192 ( 0.131) 0.025 0.167
53 8.83 1.10 0.192 ( 0.129) 0.025 0.167
54 9.00 1.10 0.192 � 0.128) 0.025 0.167
55 9.17 1.30 0.227 � 0.127) 0.030 0.198
56 9.33 1.30 0.227 � 0.126) 0.030 0.198
57 9.50 1.30 0.227 � 0.129) 0.030 0.198
58 9.67 1.93 0.250 1 0.123) 0.033 0.218
59 9.83 1.43 0.250 ( 0.122) 0.033 0.218
60 10.00 1.93 0.250 ( 0.121) 0.033 0.218
61 10.17 1.00 0.175 ( 0.120) 0.023 0.152
62 10.33 1.00 0.175 ( 0.119) 0.023 0.152
63 10.50 1.00 0.175 ( 0.117) 0.023 0.152
69 10.67 1.33 0.233 ( 0.116) 0.030 0.203
65 10.83 1.33 0.233 ( 0.115) 0.030 0.203
66 11.00 1.33 0.233 ( 0.119) 0.030 0.203
67 ll.17 1.27 0.221 ( 0.113) 0.029 0.192
68 11.33 1.27 0.221 ( 0.112) C.029 0.192
69 1?.50 1.27 0.221 ( 0.111) C.029 0.192
70 _'_.67 1.17 0.209 ( 0.110) 0.026 0.177
71 21.83 1.17 0.209 ( 0.109) C.026 0."_77
72 12.00 1.17 0.209 ( 0.107) 0.026 0.177
73 12.17 1.70 0.297 ( 0.106) 0.039 0.258
• 79 12.33 1.70 0.297 ( 0.':OS) 0.039 0.258
75 12.50 1.70 0.297 ( O.i09) 0.039 0.258
76 12.67 1.90 0.332 ( O.iO3) 0.093 0.289
�7 12.83 i.90 C.332 ( 0.102) 0.093 0.289
�8 13.00 i.90 0.332 ( 0.101) 0.093 0.289
�9 13.17 2.27 0.396 ( 0.100) 0.051 0.349
80 13.33 2 27 0.396 ( 0.099) 0.051 0.399
81 13.50 2.27 0.396 ( 0.098) 0.051 0.399
82 13.67 _.53 0.268 ( 0.097) 0.035 0.233
83 13.83 "_.53 0.268 ( 0.096) 0.035 0.233
84 19.00 ?.53 0.208 ( 0.095) 0.035 0.233
85 19.11 1.77 0.309 ( C.099) 0.090 0.268
86 19.33 1.77 0.309 ( 0.093) 0.090 0.268
87 19.50 1.77 0.309 ( 0.092) 0.090 0.268
88 19.67 1.70 0.297 ( C.091) 0.039 0.258
89 19.83 1.70 0.297 ( 0.090) 0.039 0.258
90 15.00 1.70 0.297 ( 0.089) 0.039 C.258
9i 15.17 1.57 0.299 ( 0.089) 0.036 0.238
92 15.33 1.57 0.279 ( 0.088) 0.036 0.238
93 15.50 1.57 0.279 ( 0.087) 0.036 0.238
99 15.67 1.27 0.221 ( C.086) 0.029 C.192
95 15.83 1.27 0.221 ( 0.085) 0.029 0.192
96 16.00 1.27 0.221 ( 0.089) 0.029 0.192
97 16.11 0.27 0.047 ( 0.083) 0.006 0.041
98 16.33 0.27 0.097 ( 0.062) C.006 0.091
99 16.50 0.27 C.097 ( 0.082) C.006 0.091
"_00 16.67 0.20 0.035 ( 0.081) C.005 0.030
i01 16.83 0.20 0.035 ( 0.080) C.005 0.030
i02 17.00 0.20 0.035 ( 0.079) 0.005 0.030
103 17_17 0.33 0.058 ( 0.078) 0.008 0.051
104 17.33 0.33 0.058 ( 0.078) 0.008 0.051
":OS 17.50 0.33 0.058 ( 0.077) 0.008 0.051
":06 17.67 0.30 0.052 ( 0.076) 0.007 0.096
107 17.83 0.30 0.052 ( 0.075) C.007 0.096
_OB 18.00 0.30 C.052 ( 0.079) 0.007 0.096
• ?09 18.17 0.27 0.097 ( 0.079) 0.006 0.091
�10 18.33 0.27 0.097 ( 0.073) C.006 0.091
111 18.50 0.27 0.097 ( 0.072) 0.006 0.091
i12 18.67 0.17 0.029 ( 0.072) 0.009 0.025
-16-
• ??3 18.83 C.17 0.029 ( 0.071) 0.004 0.025
ii9 19.00 0.17 0.029 ( 0.070) 0.009 0.025
115 19.17 0.23 0.091 ( 0.070) 0.005 0.035
'__6 19.33 0.23 0.091 ( O.Ob9) 0.005 0.035
11� 19.50 0.23 0.091 ( 0.068) 0.005 0.035
li8 19.67 0.17 0.029 ( 0.068) 0.009 0.025
119 19.83 0.17 0.029 ( 0.067) 0.009 0.025
120 20.00 0.17 0.029 ( 0.066) 0.009 0.025
121 20.17 0.20 0.035 ( 0.066) 0.005 0.030
122 20.33 0.20 0.035 ( 0.065) 0.005 0.030
123 20.50 0.20 C.035 ( 0.065) 0.005 0.030
124 20.67 0.'_7 C.029 ( 0.064) 0.009 0.025
125 20.83 0.17 C.029 ( C.069) 0.009 0.025
126 21.00 O.i7 0.029 ( C.063) 0.009 0.025
127 21.17 0.17 0.029 ( C.063) 0.009 0.025
128 21.33 0.17 0.029 ( 0.062) 0.009 0.025
129 21.50 0.17 0.029 ( 0.062� 0.009 0.025
130 21.67 0.17 0.029 ( 0.061) 0.009 0.025
131 21.83 0.17 0.029 ( 0.06?) 0.009 0.025
132 22.00 0.17 0.029 ( 0.060) 0.009 0.025
133 2Z 17 0.17 O.C29 ( 0.060) 0.009 0.025
139 22.33 0.17 0.029 1 0.060) 0.009 0.025
135 22.50 0.17 0.029 ( 0.059) 0.009 0.025
136 22.67 0.13 0.023 1 0.059) 0.003 0.020
137 22.83 0.13 0.023 � 0.059) 0.003 0.020
138 23.00 0.13 0.023 � 0.058) 0.003 0.020
139 23.17 0.13 0.023 � 0.058) 0.003 0.020
190 23.33 0.13 0.023 1 0.058) 0.003 0.020
191 23.50 0.13 0.023 � 0.058) 0.003 0.020
?42 23.67 C.13 0.023 ( 0.057) 0.003 0.020
143 23.83 0.13 0.023 ( 0.057) 0.003 0.020
"_99 29.00 0_13 0.023 ( 0.057) 0.003 0.020
(LOSS Rate �ot Osed)
Sum = 100.0 Sum = i5.2
Flood volume = 6`.fective rain:all 2.53�1n)
� times area 0.5(AC.)/[(In)/(Ft.)] = 0.1(AC.et)
Total soil loss = 0.38(ln)
Total soil loss = 0.015(AC.k't)
Total rainfall = 2.91(ln)
Flood volume = 9228.6 Cubic Feet
Total soi! loss = 631.9 Cubic Feet
Peak flow rate of this hydcograph = 0.160(CF5)
>+++++>++++++++++s-+++++»+++++>-+++++--+++++++++++++>+++++++++++++s
29 - H 0 0 R S T 0 R M
R u n o£`_ H y d r o g r a o h
___________________________'________________________________________
Hydrograph in 10 Minute intervals ((CFS))
Time(h+m) Volume Ac.Ft q�CFS) 0 2.5 5.0 7.5 10.0
0-10 0.0002 0.01 Q I I I I
0=20 0.0003 0.01 Q I I I I
0+30 0.0005 0.01 Q � I I I
0+90 0.0007 0.02 Q I I I I
0+50 0.0009 0.02 Q I I I I
1+ 0 0.0012 0.02 Q I I I I
1+10 0.0019 0.01 Q I I I I
1:20 0.0016 0.01 Q I I I I
1z30 0.0017 0.01 Q I I I I
1+40 0.0020 0.02 Q I I I I
1+50 0.0022 0.02 Q I I I I
2z 0 0.0029 0.02 Q I I I I
2=10 O.0O27 0.02 QV I I I I
2+20 0.0029 0.02 QV I I I I
2z30 0.0032 0.02 QV I I I I
2z90 0.0035 0.02 QV I I I I
2-50 0.0039 0.02 qV I I I I
• 3+ 0 0.0092 0.02 QV I I I I
3+10 0.0095 0.02 QV I I I I
3+20 0.0098 0.02 QV I I I I
3+30 0.0051 0.02 Q V I I I I
_ � � -
• 3+90 0.0055 0.03 4 V I I I I
3+50 0.0059 0.03 Q V I I I I
9+ 0 0.0062 0.03 4 V I I I I
9+10 O.0066 C.03 Q V I I I I
9+20 O.0071 0.03 Q V I I I I
9+30 0.0075 0.03 Q V I I I I
9+90 0.0080 0.09 Q V I I I I
9+50 0.0089 O.C9 Q V I I I I
5+ 0 0.0089 O.C9 Q V I I I I
5+10 0.0099 0.03 4 v I I I I
5+20 0.0098 0.03 Q V I I I I
5+30 0.0102 0.03 4 v I I I I
5+90 0.010"7 0.09 Q V I I I I
5+50 0.0112 0.09 Q V I I I I
6- 0 0.0117 0.09 Q V I I I I
6+10 0.0123 0.09 Q V I I I I
6+20 O.C'.29 0.09 Q V I I I I
6+30 0.0135 0.09 Q V I I I I
6+90 0.0191 0.05 Q V I I I I
6+50 0.0198 0.05 Q V I I I I
7+ 0 0.0159 0.05 Q V I I I I
7+10 0.0161 0.05 Q V I I I I
7+20 0.0168 0.05 Q V I I I I
7+30 0.0175 0.05 Q V I I I I
7+90 0.0183 0.06 Q V I I I I
7+50 0.0191 O.C6 Q V I I I I
B+ 0 0.0199 O.C6 Q V I I I I
8+10 C.0209 0.07 Q V I I I I
8+20 0.0218 0.07 4 V I I I I
8-30 0.0228 0.07 q VI I I I
8+90 0.0239 0.08 Q VI I I I
8+50 0.0299 0.08 Q V I I I
9+ 0 0.0260 0.08 Q V I I I
9+10 0.0273 0.09 4 V I I I
9+20 0.0285 0.09 Q IV I I I
� 9+30 0.0298 0.09 Q � V I I I
9+90 0.0312 0.'_0 Q I V I I I
9+50 0.0326 C.�O Q I V I I I
10+ 0 0.0390 C.10 Q I V I I I
10+10 0.0399 0.07 Q I V I I I
10+20 0.0359 0.07 Q I V I I I
10+30 0.0369 0.07 Q I V I I I
10+40 0.0382 0.09 Q I V I I I
10=50 0.0395 0.09 Q I V I I I
11s 0 0.0908 0.09 Q I V I I I
1i-10 0.0420 0.09 Q I V I I I
11-20 0.0932 0.09 q I V I I I
11+30 0.0445 0.09 Q I V I I I
11+40 0.0456 0.08 q I V I I I
11+50 0.0467 0.08 Q I VI I I
12+ 0 0.0479 0.08 q I VI I I
12+10 0.0995 0.12 Q I V I I
12+20 O.OSi2 0.12 Q I V I I
12+30 0.0528 0.12 q I IV I I .
12+90 0.0597 0.13 q I I V I I '
12+50 O.C565 0.13 Q I I V I I
13+ 0 0.0583 0.13 q I I V I I
13+10 0.0605 0.16 Q I I V I I
13+20 0.0627 0.16 Q I I V I I
13+30 0.0699 0.16 4 I I V I I
13+90 0.0669 0.11 Q I I v I I
13+50 0.0679 0.11 Q I I V I I
19+ 0 0.0694 0.11 Q I I V I I
19+10 0.0711 0.12 Q I I VI I
19+20 0.0728 0.12 � I I � I
19+30 0.0996 0.12 Q I I V I
19+9C 0.0762 0.12 Q I I IV I
19+50 0.0779 0.12 Q I I I V I
15+ 0 0.0795 0.12 Q I I I V I
15+10 0.0810 0.11 Q I I I V I
� i5+20 0.0825 O.i1 Q I I I V I
i5+30 0.0891 C.i1 Q I I I V I
15+90 0.0853 0.09 4 I I I V I
15+50 0.0865 0.09 Q I I I V I
-]g-
• 16+ 0 0.0878 0.09 Q I I I V I
16-10 0.0880 0.02 Q I I I V I
16z20 0.0883 0.02 Q I I I � I
16s30 0.0885 0.02 Q I I I � I
16'90 0.0987 0.01 Q I I I V I
16s50 0.0889 0.01 Q I I I V I
17� 0 0.0891 0.01 Q I I I V I
17+10 0.0899 0.02 Q I I I V I
17+20 0.0898 0.02 Q I I I V I
17+30 0.0901 0.02 Q I I I � I
17+40 0.0909 0.02 Q I I I � I
17+50 0.0907 0.02 Q I I I V I
18+ 0 0.0910 0.02 Q I I I V I
18+i0 0.0912 0.02 Q I I I V I
18+20 0.0915 0.02 Q I I I V I
18+30 0.0917 0.02 Q I I I V I
18+90 0.0919 0.0? Q I I I V I
18+50 0.0921 0.0? Q I I I V I
19+ 0 0.0922 0.01 Q I I I V I
19+10 0.0929 0.02 Q I I I V I
19+20 0.0927 0.02 Q I I I � I
19+30 0.0929 0.02 Q I I I � I
19+90 0.0931 0.01 Q I I I � I
19+50 0.0932 0.01 Q I I I a I
20+ 0 C.0939 0.01 q I I I V I
20+10 0.0936 0.01 q I I I V I
20+20 0.0938 0.01 Q I I I V I
20+30 0.0990 0.01 q I I I V I
20+90 0.0991 0.01 Q I I I V I
20r50 0.0993 0.01 q I I I V I
21+ 0 0.0995 0.01 q I I I a I
2?-10 0.0996 0.01 Q I I I v I
21�20 0.0998 0.01 Q I I I �I
21+30 0.0999 0.01 Q I I I �I
21-40 O.C951 0.01 Q I I I VI
• 2i+50 0.0953 0.01 Q I I I VI
22r 0 0.0959 0.01 Q I I I VI
22+10 0.0956 0.01 Q I I I VI
22+20 0.0957 0.01 Q I I I VI
22+30 0.0959 0.01 Q I I I VI
22+40 0.0960 0.01 Q I I I VI
22+50 0.0962 0.01 Q I I I VI
23+ 0 0.0963 0.01 Q I I I VI
23+10 0.0969 0.01 Q I I I �I
23+20 0.0966 0.01 Q I I I �I
23+30 0.0967 0.01 Q I I I �I
23+90 0.0968 0.01 Q I I I VI
23+SC 0.0969 0.01 Q I I I VI
29+ 0 0.0971 0.01 Q I I I v
•
-�9-
� FRONT STREET PLAZA- 100 YEAR 24 HOUR PRE/POST
CONDITION
0 n i t H y d r o g r a p h A n a 1 y s i s
Conyright (c) CIVILCADD/CIVIL�BSIGN, i989 - 2008, Version 8.1
Study date OB/13/i0 File: 3RD29i00.out
++++r+++++++-+++++++s.+++++»++++.++++++>++++++:++++++++++++++++s+++++++
Riverside Coun[y Synthe[ic Unit Hytlrology Method
RCFC & WCD Manual da[e - April 19"18
Progzam License Secial Number 6191
English (in-lb) Input Onits Used
English Rainfall Data (Inches) Input Values Used
English Units used in outpu[ for,nat
___'____'________________________________________'_'_________________
FRONT STREET PLAZA
100YR
• ____________________________________________________________________
Drainage Azea = 0.96(AC.) C.001 Sq. Mi.
Drainage Area £or Depth-Area Areal Adjustment = 0.96�AC.) 0.001 Sq.
Mi.
Length along longest watercwrse = 150.00(Ft.)
Length along longest watercourse measured to cenCroid = 75.00(FC.)
Length along longest watercourse = 0.028 Mi.
Length along longest watercourse measured to cen[roid = 0.019 Mi.
Differenw in elevation = 1.00(Ft.)
Slope along watercoucse = 35.2000 Ft./Mi.
Average Manning'S 'N' = 0.015
Lag time = 0.009 Hc.
Lag time = 0.56 Min.
258 of lag time = 0.14 Yiin.
90a of lag time = 0.23 Yiin.
Onit time = 10.00 Min.
Duration of storm = 29 Noux(s)
Oser Entered Base Flow = 0.00(CFS)
2 Y6AR Area rainfall data:
Area(AC.)[1] Aain`_all�In)[2] Weighting[1-2]
0.96 1.80 0.83
100 YEAR Area rainfall data:
Area(AC.)[1] Rainfall(I�)[2] Weighting[1*2]
0.96 9.50 2.07
STOAM EVENT �YEAR) = 100.00
Area Averaged 2-Yeac Rainfall = 1.800(In)
Area Averaged 100-Year Rain`_all = 9.500(In)
• Point rain (area averaged� = 9.500(In)
Areal adjustment factor = '.00.00 �
Adjus[ed average point rain = 9.500(In)
-2�-
• Sub-Area Data:
Area(AC.) Runoff Index Impervious �
0.960 20.00 0.960
Total Area En[ered = 0.96(AC.)
RI RI Infil. Rate Imcervious Adj. Infi1. Rate Areao F
AMC2 AMC-2 (In/Hr) (Dec.�) (In/He) (�ec.) (In/Hr)
20.0 20.0 0.890 0.960 0.119 1.000 0.119
Sum (F) = 0.119
Area averaged mean soil loss (F) (In/Flr) = 0.119
Minimum Soil 1055 raCe ((In/Hr)) = 0.057
�for 29 hour storm duration)
Soil low loss ra[e (decimal) = 0.130
❑ n i t H y d r o g r a n h
VALLEY S-CUrve
Onit Iiydrograph Data
Onit time period Time R of lag Dis[ribution Onit Hydcogranh
(hLS) GYd�h o (CFS)
1 O.i67 1779.815 100.000 0.969
Sum = 100.000 Sum= 0.969
The following loss raCe calculations reflect use of the minimum calculated loss
rzte subtracted from the Storm Rain to nroduce the maximum Ef£ective Rain value
Unit Time Pat[ern Sto[m Rain Loss rdte(In./Hr) Hf£ecCive
(H[.) Peme�t (In/Hr) Max I Low (In/H[)
• 1 0.1� 0.17 0.095 ( 0.202I 0.006 0.039
2 0.33 0.17 0.095 ( 0.201) 0.006 0.039
3 0.50 O.11 0.095 ( 0.199) 0.006 0.039
4 0.6� 0.23 0.063 ( 0.197) 0.008 0.055
5 0.83 C.23 0.063 ( 0.196) 0.008 0.055
6 1.00 0.23 0.063 � 0.199) O.00B 0.055
� 1.17 0.20 0.059 1 0.193) O.007 0.097
8 1.33 0.20 0.059 � 0.191) O.007 0.097
9 1.50 0.20 0.059 � 0.190) 0.007 0.097
10 1.67 0.23 0.063 i o.iaa� 0.008 0.055
11 1.83 0.23 0.063 � 0.187) 0.008 0.055
12 2.00 0.23 0.063 � 0.185) 0.008 0.055
13 2.17 0.27 0.072 � 0.189) 0.009 0.063
19 2.33 0.27 0.072 � 0.182) 0.009 0.063
15 2.50 0.27 0.072 � 0.191) 0.009 0.063
16 2.67 0.33 0.090 � 0.179) 0.012 0.078
17 2.83 0.33 0.090 � 0.178) 0.012 0.078
18 3.00 0.33 0.090 � 0.176) 0.012 0.078
19 3.17 0.33 0.090 1 0.175) 0.012 0.078
20 3.33 0.33 0.090 � 0.173) 0.012 0.078
21 3.50 0.33 0.090 � 0.172) 0.012 0.078
22 3.67 0.37 0.099 � 0.171) 0.013 0.086
23 3.83 0.37 0.099 � 0.169) 0.013 0.086
29 9.00 0.37 0.099 � 0.168) 0.013 0.086
25 9.17 0.93 O.1P � 0.166) 0.015 0.102
26 9.33 0.43 0.117 ( 0.165) 0.015 0.102
27 9.50 C.93 O.11l ( 0.163) 0.015 0.102
28 9.67 0.50 0.135 ( 0.162) 0.018 0.117
29 9.83 0.50 0.135 ( 0.16i) 0.018 0.117
30 5.00 0.50 0.135 ( 0.159) 0.018 0.117
3i 5.17 0.43 0.117 ( 0.158� 0.015 0.102
32 5.33 0.93 0.117 ( 0.157) 0.015 0.102
33 5.50 0.93 0.117 ( 0.155� 0.015 0.102
39 5.67 0.53 0.194 ( 0.159) 0.019 0.125
35 5.83 0.53 0.194 ( 0.152) 0.019 0.125
• 36 6.00 0.53 0.194 � 0.151) 0.019 0.125
37 6.17 0.60 0.162 ( 0.150) 0.021 0.141
38 6.33 0.60 0.162 ( 0.198) 0.021 0.141
39 6.50 0.60 0.162 ( 0.197) 0.021 0.141
-2] -
• 90 6.67 0.67 0.180 ( C.146) 0.023 0.157
91 6.83 0.67 0.180 ( 0.145) 0.023 0.157
42 7.00 0.67 0.180 ( 0.193) 0.023 0.':57
43 7.17 0.70 0.189 ( 0.142) 0.025 0.?69
49 7.33 0.70 0.189 ( 0.191) 0.025 O.i69
95 7.50 0.�0 0.189 ( 0.139) 0.025 0.169
96 7.67 0.83 0.225 ( 0.138) 0.029 0.196
97 7.83 0.83 0.225 ( 0.137) 0.029 0.196
98 8.00 0.83 0.225 ( 0.136) 0.029 0.196
99 8.17 1.00 0.2�0 � 0.139) 0.035 C.235
50 8.33 1.00 0.270 � 0.133) 0.035 0.235
51 8.50 1.00 0.270 1 0.132) 0.035 0.235
52 8.67 1.10 0.297 1 0.131) C.039 0.258
53 8.83 1.10 0.297 1 0.129) 0.039 0.258
59 9.00 1.10 0.297 ( 0.128) 0.039 0.258
55 9.17 1.30 0.351 ( 0.127) 0.046 0.305
56 9.33 1.30 0.351 ( 0.126) 0.096 0.305
57 9.50 1.30 0.351 ( 0.129) O.C96 0.305
58 9.67 1.93 0.387 ( 0.123) 0.050 0.337
59 9.83 1.93 0.387 ( 0.?22) 0.050 0.337
60 10.00 1.93 0.387 ( 0.?21) 0.050 0.337
61 10.17 1.00 0.270 ( 0."_20) 0.035 0.235
62 10.33 1.00 0.270 ( 0.119) 0.035 0_235
63 10.50 ?.CO 0.270 ( 0.117) 0.035 0.235
64 10.67 1.33 0.360 ( 0.116) 0.097 0.313
65 10.83 1.33 0.360 ( 0.115) 0.097 0.313
66 11.00 1.33 0.360 ( O.li4) 0.097 0.313
67 11.17 1.27 0.392 ( O.li3) 0.099 0.298
68 11.33 1.27 0.392 ( 0.112) 0.099 0.298
69 11.50 1.27 0.392 ( 0.111) 0.099 0.29fi
70 11.67 l.11 0.315 ( 0.110) 0.091 0.279
71 11.83 1.17 0.315 ( 0.109) 0.091 0.279
72 12.00 1.17 0.315 1 0.107) 0.091 0.279
73 12.17 1 JO 0.959 1 O.1C6) C.060 C.399
79 12.33 1.70 0.459 ( 0.105) 0.060 0.399
� 75 i2.50 1.70 0.959 ( 0.109) 0.060 0.399
76 12.67 1.90 0.513 ( 0.103) 0.067 0.996
77 12.83 1.90 C.513 ( 0.102) 0.067 0.996
78 13.00 1.90 C.513 ( 0.101) 0.067 0.996
79 13.17 2.27 0.612 ( 0.100) 0.080 0.532
80 13.33 2.27 0.612 ( 0.099) O.C80 0.532
81 13.50 2.27 0.612 ( 0.098) 0.080 0.532
82 13.67 i.53 0.919 ( C.097) 0.059 0.360
83 13.83 1.53 0.919 ( C.096) 0.059 0.360
84 19.00 1.53 0.9'-9 ( 0.095) 0.054 0.360
85 19.17 1.77 0.9�7 ( 0.099) 0.062 0.915
86 19.33 1.77 0.9�7 ( 0.093) 0.062 0.915
87 19.50 1.77 0.977 ( 0.092) 0.062 0.915
88 19.67 1.70 0.959 ( 0.09i) 0.060 0.399
- 89 19.83 1 JO 0.959 ( 0.090) 0.060 0.399
90 15.00 1 JO 0.959 ( 0.089) 0.060 0.399
91 15.17 1.57 0.923 ( O.C89) 0.055 0.368
92 15.33 1.57 0.923 ( O.C88) 0.055 0.368
93 15.50 1.57 0.923 ( O.CB�) 0.055 0.368
99 15.67 1.27 0.392 ( 0.086) 0.099 0.298
95 15.83 1.27 0.392 ( 0.085) 0.099 0.298
96 16.00 1.27 0.392 ( 0.089) 0.099 0.298
97 16.17 0.27 0.072 � 0.083) 0.009 0.063
98 16.33 0.27 0.072 ( 0.082) 0.009 0.063
99 16.50 0.27 0.072 ( 0.0821 0.009 0.063
100 16.67 0.20 0.059 ( 0.081) 0.00� 0.097
101 16.83 0.20 0.059 � 0.080) 0.007 0.097
102 ll.00 0.20 0.059 � 0.079) 0.007 0.097
103 17.17 0.33 0.090 ( 0.078) 0.012 0.078
109 17.33 0.33 0.090 ( 0.078) 0.012 0.078
105 17.50 0.33 0.090 � 0.077) 0.012 0.078
106 17.67 0.30 0.081 � 0.076) 0.011 0.070
107 i7.83 0.30 0.081 � 0.075) O.011 0.070
108 18.00 0.30 0.081 � 0.079) O.011 0.070
109 i8.17 0.27 0.072 ( 0.079) 0.009 0.063
• 110 _8.33 0.27 0.072 1 0.073) 0.009 0.063
111 18.50 0.27 0.072 ( 0.072) 0.009 0.063
112 i8.67 0.17 0.095 ( 0.072) 0.006 0.039
1i3 18.83 0.17 C.095 ( 0.071) 0.006 0.039
_22 _
• 119 19.00 0.17 0.095 ( 0.070) 0.006 0.039
ll5 19.17 0.23 0.063 ( 0.070) 0.008 0.055
1i6 19.33 0.23 0.063 ( 0.069) 0.008 0.055
1"_7 19.50 0.23 0.063 ( 0.069) 0.008 0.055
118 19.67 0.17 0.095 ( 0.068) 0.006 0.039
119 19.83 0.17 0.095 ( 0.067) 0.006 0.039
120 20.00 0.1� 0.095 ( 0.066) 0.006 0.039
?21 20.17 0.20 0.059 ( 0.066) 0.007 0.097
122 20.33 0.20 0.059 ( 0.065) 0.007 O.C97
123 20.50 0.20 0.059 ( 0.065) 0.007 0.097
129 20.67 O.i7 0.045 ( 0.069) 0.006 0.039
125 20.83 0.17 0.095 ( 0.064) 0.006 0.039
126 21.00 0.17 0.095 ( 0.063) O.006 0.039
127 21.17 0.17 0.095 ( C.063) 0.006 0.039
128 21.33 0.17 C.045 ( 0.062) 0.006 0.039
129 2i.50 0.17 O.C95 ( 0.062) 0.006 0.039
130 21.67 0.17 0.095 � 0.061) O.006 0.039
131 21.83 0.17 0.095 � O.C6?) 0.006 0.039
' 132 22.00 0.17 0.095 ( 0.060) 0.006 0.039
133 22.17 0.17 0.095 ( 0.060) 0.006 0.039
139 22.33 0.17 0.095 ( 0.060) 0.006 0.039
135 22.50 0.17 0.095 ( 0.059) 0.006 0.039
136 22.67 C.13 0.036 ( 0.059) 0.005 0.031
137 22.83 0.13 0.036 ( 0.059) 0.005 0.031
138 23.00 0.13 0.036 ( 0.058) 0.005 0.031
139 23.17 O.i3 0.036 ( 0.058) 0.005 0.031
190 23.33 O.i3 0.036 ( 0.058) 0.005 0.031
191 23.SC 0.13 0.036 ( 0.058) C.005 0.031
192 23.67 0.13 0.036 ( 0.057) 0.005 0.031
193 23.83 0.13 0.036 ( 0.057) O.COS 0.031
199 29.00 0.13 0.036 ( 0.057) 0.005 0.031
(LOSS Rdt2 NOC ❑SEd)
Sum = 100.0 Sum = 23.5
Flood volume = Effective rainfall 3.91(In)
times area 0.5(AC.)/[IIn)/(F[.)] = 0.2(AC.Ft)
• Total soil loss = 0.58�In)
Total soil loss = 0.022�AC.Ft)
T_otal rainfall = 4.50(In)
Flood volume = 6537.3 Cubic Feet
Total soil loss = 976.8 Cubic Feet
Peak £low ra[e of this hydzograph = 0.297(CFS)
+++++++++++++++i<++++++++++++++++++++++++++++++++++++++++++<++++++++
29 - H 0 0 R 5? 0 R M
R u n o££ H y d r o g r a p h
Hydrograph in 10 Minute intecval5 ((CFS))
Time(h+m) Volume Ac.ct Q(CFS� 0 2.5 5.0 7.5 i0.0
0+10 0.0003 0.02 Q I I I I
p+20 0.0005 0.02 Q I I I I
0+30 0.0008 0.02 Q I I I I
. 0+90 0.0011 O.C3 Q I I I I
0+50 0.0015 O.C3 Q I I I I
1+ 0 C.0018 0.03 Q I I I I
1+10 0.0021 0.02 Q I I I I
1+20 0.0029 0.02 Q I I I I
1+30 0.0027 0.02 q I I I I
1+90 0.0031 0.03 Q I I I I
?+50 0.0039 0.03 4 I I I I
2s 0 0.0038 0.03 q I I I I
2s10 0.0092 0.03 QV I I I I
2s20 0.0096 0.03 QV I I I I
2+30 0.0050 0.03 QV I I I I
2+90 0.0055 0.09 QV I I I I
2+50 0.0060 0.09 QV I I I I
3+ 0 0.0065 0.09 QV � I I I
• 3+�0 0.0070 0.09 QV I I I I
3+20 0.0075 0.09 QV I I I I
3+30 0.0080 0.09 Q V I I I I
3+90 0.0085 0.09 Q V I I I I
-23-
• 3+50 0.0091 O.C9 Q V I I I I
9+ 0 0.0096 O.C9 Q V I I I I
9=10 0.0103 0.05 Q V I I I I
4+20 0.0109 0.05 Q V I I I I
9.30 0.0116 0.05 q V I I I I
9+40 0.0123 0.05 Q V I I I I
9+50 0.013? 0.05 Q V I I I I
5+ 0 0.0138 0.05 Q V I I I I
5+10 0.0195 0.05 Q V I I I I
5+20 0.0151 0.05 Q V I I I I
5+30 0.0158 0.05 Q V � I I I
5+90 0.0166 0.06 Q V I I I I
5+50 0.0179 0.06 Q V I I I I
6+ 0 0.0182 0.06 Q V I I I I
6+10 0.0191 0.07 Q V I I I I
6+20 0.0200 0.07 Q V I I I I
6+30 0.0209 O.C7 4 v I I I I
6=90 0.0219 O.C7 Q V I I I I
6z50 0.0229 0.07 q V I I I I
7- 0 0.0239 0.07 q V I I I I
7+10 0.0299 0.08 Q V I I I I
7+20 0.0260 0.08 Q V I I I I
7+30 0.0270 0.08 Q V I I I I
7+90 0 A283 0.09 Q V I I I I
7+50 0.0295 0.09 4 V I I I I
8+ C 0.0308 0.09 Q V I I I I
8+10 0.0323 O.i1 Q V I I I I
8+20 0.0338 0.11 Q V I I I I
8+30 0.0353 0.11 Q VI I I I
8+90 0.0369 0.12 Q VI I I I
8+50 0.0386 0.12 Q V I I I
9+ 0 0.0902 0.12 Q V I I I
9+10 O.C922 0.19 Q V I I I
9+20 0.0991 0.19 Q IV I I I
9+30 0.096? 0.19 Q I V I I I
• 9+90 0.0982 0.16 Q I V I I I
9+50 0.0509 0.16 Q � V I I I
10+ 0 0.0525 0.16 Q I V I I I
10+10 0.0590 0.11 Q I V I I I
10+2C 0.0555 0.11 Q I V I I I
10+30 0.0570 0.11 p I V I I I
10+90 0.0590 0.15 Q I V I I I
10+50 0.0610 0.15 Q I V I I I
11+ 0 0.0630 0.15 Q I V I I I
11-10 0.0649 0.14 Q I V I I I
1?z20 0.0608 0.14 Q I V I I I
li=30 0.0687 0.19 Q I V � I I
ll+90 0.0']OS 0.13 Q I V I I I
11+50 O.C722 0.13 Q I VI I I
12+ 0 0.0"190 0.13 Q I VI I I
12+10 0.0"165 0.19 q I V I I
12+20 0.079? 0.19 Q I V I I
12+30 0.0816 0.19 Q I IV I I
12+90 0.0895 0.21 Q I I V I I
12+50 0.0873 0.21 q I I V I I
13+ 0 0.09C2 0.21 q I I V I I
13+10 0.0936 0.25 Q I I V I I
13+20 0.0970 0.25 Q I I V I I
13+30 0.1C09 0.25 Q � I V I I
13+90 0.1027 0.17 4 I I v I I
13+50 0.1050 0.17 Q I I V I I
14+ 0 0.1073 0.17 Q I I V I I
19+10 0.1100 0.19 Q I I VI I
19+20 0.1126 0.19 Q I I V I
19+30 0.1153 0.19 � I I V I
19+90 0.1n8 0.19 Q I I la I
19+50 0.1209 0.19 Q I I I V I
i5+ 0 0.1229 0.19 Q I I I V I
15+10 0.1253 0.17 Q � I I V I
15+20 0.1276 0.17 Q I I I V I
• 15-30 0.1300 0.17 Q I I I V I
15'90 0.1319 0.19 Q I I I V I
15+50 0.1338 0.19 Q I I I V I
16+ 0 0.1357 0.19 Q I I I V I
-24-
• 16+10 0.136'_ 0.03 Q I I I V I
16+20 0.1365 0.03 Q I I I V I
16+30 0.1369 0.03 Q I I I V I
16+90 0.1372 0.02 Q I I I V I
16+50 0.1375 0.02 Q I I I V I
17+ 0 0.1378 0.02 Q I I I V I
17+10 0.1383 0.09 Q I I I V I
'_7+20 0.1388 0.09 Q I I I V I
17+30 C.i393 0.09 Q I I I V I
17s90 0.1397 0.03 � I I I V I
17-50 0.1902 0.03 Q I I I V I
18+ 0 0.1906 0.03 Q I I I V I
18+10 0.1910 0.03 Q I I I V I
18+20 0.1919 0.03 Q I I I V I
18+30 0.1918 0.03 Q I I I � 1
18+90 0.1921 0.02 Q I I I V I
18+SC 0.1923 0.02 Q I I I V I
19+ 0 0.1926 0.02 Q I I I V I
i9+10 0.1929 0.03 Q I I I V I
19+20 C.':933 0.03 Q I I I V I
19+30 0.1936 0.03 Q � I I V I
19+90 0.1939 0.02 Q I I I V I
19+50 0.1991 0.02 Q I I I V I
20+ 0 0.1999 0.02 Q I I I V �
20+10 0.1997 0.02 Q I I I V I
20+20 0.1950 0.02 Q I I I V I
20+30 0.1953 0.02 Q I I I V I
20+90 0.1955 O.C2 Q I I I V I
20+50 0.1958 0.02 Q I I I V I
21< 0 0.1960 0.02 Q I I I V I
21+10 O.i963 0.02 q I I I V I
2i+20 0.1965 0.02 p I I I VI
21+30 0.1968 0.02 Q I I I VI
21+40 0.1970 0.02 Q I I I VI
21+50 0.1973 0.02 Q I I I VI
• 22+ 0 0.1975 0.02 Q I I I VI
22+10 0.1978 0.02 Q � I I VI
22+20 0.1980 C.02 Q I I I VI
22+30 0.1983 0.02 Q I I I VI
22+90 0.1985 O.C1 Q I I I VI
22+50 0.1987 0.01 Q I I I �I
23- 0 0.1989 0.01 Q I I I VI
23+10 0.1491 0.01 Q I I I VI
23+20 0.1493 0.01 Q I I I VI
23+30 0.1995 0.01 Q I I I VI
23+40 0.199� 0.01 4 I I I vl
23+50 0.1999 0.01 Q I I I VI
29+ 0 0.1501 0.01 Q I I I VI
•
-25-
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Water Quality Management Plan (WQMP)
FRONTSTREETPLAZA
� Appendix D
Educational Materials
•
•
Water QualiTy Management Plan (WQMP)
FRONT STREET PLAZA
• TENANT EDUCATION LOG
TENANT NAME TENANT DATE WQMP MATERIALS
UNIT PROVIDED
•
•
�
tiAT;��or�:infarmation = ` � T ��� � �,� :-
�•�+t .o-,n� . , I i v $' � ^s k � � �..
�} a 4 Y-i` ..y � {� �+�� Y` � t I� .� 3
Interested in other FREE pollution prevention ' _ ,,,. � , {,%_� , -
information? Call 1-800-506-2555 to order any of the � � o� '* �--
follqwing matenals or presentations: �, �� r� �� r r`�° �� �`y,..'
Materials: , � .�-� ( � a � ,� Q_
- A Home Garden Care Guide „��. � ���.
- Ouldoor Activilles Brochure � � � � ���� � �,
- Environmental Calentlar (when available) -:, �
- Household Hazardous Waste Colledion Schedule ,� n
Presentations� :�. ,�.,,.„., ,.as il
- Garden Workshops at bc21 nursenes z'�` ;`�" �. �d�w °- ,. �'°:
- Classroom Presentations K-12 �
- CiNGROtaryfFlowerClubPresentations :� �,`�;x � ��'��� ",�'";�'� '�•`�
- Group Activi�ies -
,� "�' �+; . � �.?� 3 � �� � � i ��.
LOCAL SEWERING AGENCIES � � ,� � � '�-'��� ; Q�
IN RIVERSIDE COUNTY: '" '""� -. ' ' �`
Cit o( Beaumon� ,�g��. � ' ~_�� ` �"` - '`i '� � � . ��, �
Y (909) 769-A520 �g � ""'
City of Bannirlg (909) 922�3130 �ro,��+,� ,� � ° .a�
CltyoBlythe (309)922�76'I �,� . " `� �`�� �.
City of Coachella (760) 397-5008 � �.� �� � ` �
Coachella Valley Wa�er (760) 398-2651 � "� � � �, ' � ' 'k • �� °�
� : :*
Clly ot Corona (909) 736-2259 '�' � ^ �� a ��i� �.
Desen Center. CSA #51 (760) 227-3203 .." � I m - �- ��
Eastern Municipal Wafer (909) 92&3777 � �' .
• Elsinore Vailey MWD (909) 674-3146 _ ^_ l � �` � �'•7 :--- y',
Farm Mutual Waler Co. (909) 244-4198
Idyilwild Water District ��J09) 659-2143 —' '� � --- /�' ;��,
Junipa Community Service (909) 659-7434 . .:� .. _
Lake Hemet MWD (909i �58-3241 � � � ' .� ��- - .�
Lee Lake Water �islrict (909) 277-tA14 �� � 1 ` �,�'i`
March Air Reserve Base (909) 656-7000 �"" ::
Mission Springs Waler (760} 329-6448 �
Ci1y of Palm Springs (760) 323-8242 �;?C�a<� '�,�`�,°
Rancho Ca6allero (909) 780-9272 ,�'r � ���
Rancho Califomia Water (909) 676-A 101 : . �� . �-- � �-- �
Ripley. CSA #62 (760) 922-4909 ' '� \�`� :
Rubidoux CommunitY (90916847580 � `.:� ' - � (/ 1 : �.�
Ciiy ot Riverside (9D9) 862-5341 4 - ��_..(� !
�?
Sileot Valley Club. Ina (909) BA9-4501 ��; 1 Q.� � ��
Valley Sanitary District (760J 347-2356 �"' � J � � ^� --. � / � � ! � M'
Weslem Municipal Water (909) 7A0-4170 ��,,,_ �'� �\ �., e?�
�\j� '°
StormWater � � ��� �. �a. . ,,� �
: ; �� a
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PROTECTIpN PROGRAM �������� ������"� �I�) ��� � � O �� � �
-�'.� �m,�s°t8�.� x
Tbe SlQrrn+V er pro�rapl grqtelully nckriowie�lges ihe C[ars �- - m d� ;e
Valle y Nnnp[�(nl SoUren Poli�7�ie�n ConKol Proyrap� a>>d �he �'.� q
Al.�mrda(rJUnP�Wic � �.� �� n
pio�ntl d-�iihisbrqchue. ..- b� �' ��
�;� ? . 4,.'��;� ' . k. .
x
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ai � ....�.F:�'�'."s. .. � `t
•
i
�
��°" �rr`�� :�r����"�' �o .�u no !�, . ,�wher�e�'�the°wafer should go?
�_� Riverside County has two drainage sysiems - sanitary
``� J T sewers and storm tlrains. The storm drain system is
�-- ,'/ designed to prevent flooding by carrying excess
. -=-'�-' ��� � rainwateraway�from streets. .. iPs n�t designed to be a
�'/ �' � waste disposal sys[em. Since the storm drain system
� � does not provide for water treatment, it often serves
the unintended function of transporting polWtants
directly to our waiervvays.
',; •,
Unlike sanitary sewers, siorm drains are not
�; connectedtoatreatmentplanl-theyflowdirectly
to our bc21 streams, rivers and iakes.
Non-stormwaler discharges such as
washwater generated irom outdoor Soaps, degreasers, automotive fluids, litter, and a host
cleaniny projects often transport harmful ' ot other materials washed off buildin s, sidewalks,
pollutants into storm drains and our local � 9
� waterways. Polluted runoH contaminates � P�azas, parking areas, vehicles, and equipment can all
I local waterv✓ays and poses a threat to �\ polluteourwaterways.
groundwater resources.
i ��IF�:�w'...+ . a Al'..»�'.w"^.�y�'.:.,�•,..... .,.��
• 4;K da. .n��, �<�R�"'wi�+ .'i'" �.
",� �' � �' ���.` `��II� Q�u6_ �� ��IQDO��Q
�� ,
�� �� �� `� ���op�N�J��� , ��B���o�N1�H� l�rr�����o�uu ������uuo
� _.r"«�,�.�
�
Since preventiny pollution is much easier, and less costly than cleaning up "after the fact," the �
Cities and County �f Riverside StormWater/CleanWatar Proiection Program informs residents and •,'
businessespfpotiution��revenliortactivitiessuchasthoseciescrihedinihispamphlet.. ��
i
7he Cities and County of Riverside have adopted ardinances for stormwater management and
discharge control. In accordance with state and teAeral law, these local stormwater ordinances
rohi ' thedischargeofwastesintolhestom�drainsystemorlocalsurfacewaters. 7hisincludes
non-stormwa[er discharges containing oil. grease, detergents, degreasers. trash, or other waste ��"� 1
materials.
?.� 1 � �, '��Fr
,.r— � 5��,� _ �
1`
� �o � e ��t"
' � � � �,m �r"
� �:W
�, �`��
� �. � -
PLEASE NOTE: The discharge of pollutanls into the street, gutters, s[orm drain system, or waterways -
without a Regional Water Dualiry Control Board permit or waiver - is sVlct/y prohibited by local ordinances
and state and federal law.
•
2
�
�
� � } Q .� � � p ...
. z; � �� r a v .`.� K r. S �/„ c� ? >!'` � fiV ry ��"�1 y` "msa;.p �'4i5 f 4 .nt ..
Everyday activities in our communities can affecf the quality of water in our wai
waterrunoff, the combined effect ofan entire community within fhe watershed c
'=Car Wa N�n�"�'and Re air a e,U holste Cleanin
gy p �.�p �,. .. . rY 9
• Wash cars on a lawn or unpaved surface that • Dispose of diRy cleaning solution down a sink
will absorb and help filter the water. Don't ortoilet.Donotdisposeofitinthes[reetgutter
aliow polluted waste water to flow into the orstormdrainsystem.
street, gutterorsrorm drain inlet.
• Repair leaking vehicles prompt�y. Use (TlPS) Make sure the professionals donY use
absorbents like cardboard, cat litter, cloths, tbe storm drain to empty [heir tartks.
etc. to safely catch spills. Sweep up �sed Professionals should dispose of the cleaning
absorbenl materials and place in the trash. solutions down a sink or toitef, orreturn fo their
Never dump oil or any auto fluids onto ihe company for disposa! to the sanitary sewe�
grou nd or into a storm drain inlet. Make sure they donY use the storm drain!
• If you change your own oil or antifreeze, be
sure to recycle il! Call 1-800-CLEANUP for the Y �
nearestdisposallocation. i are the Solution
• (TIPS) Use a commercial car wash. Car wash to StormWater Pollutinn!
facilities are designed to capture afl wasfe
water. ff an auro service center changes the oil,
make sure they divert water runorf away from .�,,..� n`and�YaC.C�°C.aC@
stree! guffers and storm drain inlels. ,.4a ' �w.
• Don't use chemical pesticides or herbicides
unless you have a major problem and never
�
apply if rain is forecasted. Read labels
` Ca►ne�ete Masonry and carefully,andapplysparingly.
' ��
�►sphaitrRepair 0 Limit lawn heatment applications of chemical
. �+ �x weed killers and fertilizers. �Be sure that your
• Set up and operate small mixers on heavy lawn is appropriately watered mowed,
tarpsordropclothstocontainmateria�spills. thatched, and aerated. T�y less-toxic
altematives tor the yard and garden. Call
• Hose down mixers, tools, and trailers in a dirt 1-800-506-2555 for FREE copy of a Home
area where rinse water won'1 flow into the Garden Care Guide to Help Protect Our
streel gutter or storm drain system. Environment.
O Clean up with a broom, NOT A HOSE! Fine • Don'tbloworrakeyardwasteintothes[reelor
particles may be washed into a dirt area — bul gutter. Sweep up the leaves and clippings in a
notintothestreetgutterorstormdrainsystem. trashcanorstartacompostpiie.
(TIPS) If the work is contracted, have your ��f you are renovating your �andscaping, think
contracior estab/ish a cleanup area before erosion control: Prevent dirt and debris from
starting the work. Try to minimize the use of washingintostormdrains.
water in the clean up. TeN your contractor that � pick up pet waste and dispose of it in irash
rinsing hucks orequipmentm the streetornear �ans. Always remember lo p�ck up after your
a storm drainls 1llegai and it endangers wildlife! dog when you take it for a walk.
� � !
•
3
�
. x � �1� «�> �: �
� �'�`� ������ �� � "� k '! $ b° a, a�� � �, - E
l " > ?*
�i � .�s '�.�., � x :�a s 'b �S �6" °e �7 ° gf �s�'' x* '•' C "
k
ershed. While indiviilual homes migfit confribute onty mrnor amounts of polfuted
an seriouslyaffectourrivers, lakes and streams.
� �
"�°�"�OUS�� _C�E811111g.�gc'Pi]Ifltlflg 1 Deplete the chemicals in the pool water,
� use your home pool chemistry test kd to
• Senddirtycleaningwaterdownasinkortoilet, veri�y the pool water is free of alt
not inro the streel gutter. or slorm drain chemicals.
system.
. prain pool water to landscaped areas,
• Try non-toxicaiternatives. Call 1-800-506-2555 lawns, yards. or any area that will absorb
to order a FREE brochure on environmen�ally most of the water. You may have to drain
friendly cleaning aiternatives for the home. the pool water over a period of a few days
to ailow the Iandscape areas to absorb
• Never dean brushes or rinse paint containers most of the water.
into the street, gutter or storm drain inlet.
Clean latex paint from brushes In a sink. Filter 1 Avoid discharging pool water into the
and reuse Ihinners and solvents tor oil based guiteror storm drain.
paints.
, Divert fifler rinsewater and backwash into
O Dispase of unusable paints, thinners, thinner landscapedoratrsorbentareas.
residue, and cleaning products al a collection
• evencCa11909•358-5256orwww.rivecoeh.ora Y p �
�"Por Ihe date and location of the next Household �NL C RA�W
Hazardous Waste Coilection Event. �� THE DRA��
(T(PS) Empty or dry paint cans may go in with
regufarhouseholdgarbage—removelidsfirs[, s^-�:;��r��.
beforedlsposal.Letyour/riends,relativesand a�,��t1„�a�!]( Maintenance
neighborsknowthatstprmdrainsllowdirectly " '
ro/oca! rivers, lakes and streams without • If you use a septic system, make sure it is
treatment.NEVERdisposeinasformdrain. funclioning properly. Overfiowing septic
systems release raw sewage that can fiow to
rivers, lakes and ground water, causing
serious contamination.
. ,,, T--�,�.,„;--�� ... • How oken your tank will need pomping
; �,PnollSpa,�Maintenance depends largely on the size of the tank, the
�� ` number of people in Ihe household, and the
• Control algae by regulating chlorine levels. Do kinds of wastewater discharging appllances
not use copper-based algae coNrol products. you use.
• It you need to drain your pool water, call your • When septic tank service companies are hired
local sewering agency ro find out if a to pump ou[ the contents of the sepGc tank,
connection to the s2nitary sewer line is they must dispose oi contents at approved
allowed. �More information on the reverse disposaf sites. Calt 9D9-955-8980 for a Home
side) Maintenance Guide.
• If your sewering agency wiil not accep� poo� (T!P) Oivert downspoufs and air conditioning
wa[erintolheitsystem,ori(youareonaseptic condensation water frorn hard surfaces onto
tank system, follow these guidelines: grass and permea6le soil to he7p filfer harnrfu7
si�bstances.
•
4
�
����� t ,: . �
x x �
� �ll'���������Ii��:' ���s� `" � `�. � . � �p ,. ��`� �. - _ � ��
For information on "closed-loop" suppliers ����� ' '�� � �
and recycling/disposal vendors, contact: �, ° q � �
Cou�ty of Riverside {� 7� ' �j �� ±
��� {�QVl�` �V9 M+[C � � 6 7 „` ,� a'
Health Services Agency �� � � � � � �,.
Department of Environmentai Health � `� ?�° « , A�•�
at (909) 358-5055. ��� ` '��"�'�`^�' �
���� ��[��1�(�C� ;�
SPILL RESPONSE AGENCY: �11U�LYl��� LI
HAZ-Mqr: (909) 358-5055 `� ` � E ' ° � �,
AFTER 5 00 P M (909) 358-5245 oR 911 G � '� fi ��
H,n7nROOUS Wnsre D�svosa�: (909) 358-5055 f : y : .�•"�'°""� '. g �
t �;, „ , *�-�
RECYCLING INFORMAT�ON: 1-800-366-SAVE � "' ���1 � '� • � ��L�IA/'w �'
� � H`� � ,� '� � `
TO REPORT ILLEGAL DUMPMG OR A CLOGGED ��'}� �, -�
SioRM DftniN: 1-800-506-2555 ( ° i ' ,�,
� w ,�,, i�,
,
� �-� < �, � -: � .� � ,�� ��
To order additional brochures or to obtain information �� j n/���
• on other pollulion preventlon activities, � v % . f : �/=` -. �
call: (909) 955-111t P � ) �� } �..:;�
� &R
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k
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' �.'�7� q. � � !� �� ��� y '�'�.
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The Cities and County of Riverside � �'
StormWaterlCleanWater Protection Program � "����si + " r ��"�i�
1-800-506-2555 `��; � � � � �� � � �
��� D����il��a���t�t� ;
,.� �, [�[��¢�c����°'�p��, � °, �
,,
Storm�Iater � �
��� _ . . � ��
, ,, �; �
� � e ..� k � � � �n ��� � �;�' �„�,.
PROTECTION PROGRAM � ���'����S�auPal��S- � �'�` � � �
��,, . n"�". ; 'db.;
y fr?
� � .
� S rt �,G"ro ery�Stor� � � �
�� . r , ,
Riverside Gounty gratetuily acknowtedges ihe Santa Clara ��`�. �;� � �i �
Valley Nonpoint Source PoiWtion CoMrol Program. A�amede J � �• ' `�' '�
Countywitle Ciean VYaler Program anA me San Bernardino �'��` �' ��
County Stnrinwa�er Proy�am for infortnation provided in this ��.+`j Ba4 �.�.
brOCl�ure. ,. �,._ . _ ��r
_` �.
•
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����;.� ������ ,-, , t ��� �pi�i=ar� .�. .�uuN,a�t yaU xhoW � �
� ���: �� ��: a�
Riverside Counry has iwo drainage systems - sanitary sewers and storm drains. The storm
drain system is designed to help prevent flooding by carrying excess rainwater away from
streets. Since the skorrn drain system does noi provide for water treatment, it also serves the
uninfended function of transporling pollutants directly to our waterways.
Unlike sanitary sewers, storm drains ����; t�
are not connected to a treatment �
plant - they flow directfy to our
local streams, rrvers and takes. �""
��,,
Waste or washwater generated by the food se rvice . m
industryoftencontainsmaterialssuchaslo�d — _ -
wastes, oil. grease, detergents, and degreasers. �
These materials can degrode local waters when
allowed to flow into a storm drain system. �� ��
Stormwater pollution causes as much as 60% of our � Q S �
water pollution problem. Jt jeopardizes the quality of (
our watervvays and poses a threatto groundwater �� Y
resources if pollutants percolate through soil. L�
•
r�nv .g, a �,� �; +� ,� og�4 s�.' � � *���'� ��..� � � i
�x«n� ���� w�����.r�c��et�es.�an� �C�unty of�Rluerside
re� ��`�� � � ���to`�i`�MatGrE�ieanwater �r�t�cte�n Pr+o�r�m
g�`.���" �`�"� �t
s��s,.�s.... k.,,�� .
Since preventing pollution is much easier, and less eostly, tha� cleaning up "afterthe fact," the Ci6es
and County of Riverside StormWaterlCleanWater Protection Program informs residents and
6usinesses on pollution preventlon activities such as the Besi Management Practices (BMPs}
described in this pamphlet.
The Cities and Gounty of Riverside have adopted ordina�ces for stormwater management and
discharge control. In accordance with state and federai law, lhese Iocal stormwater ordinances
rp ohibit the discharge of wastes into the storm drain systerri or local surface waters. This includes
discharges from the food service industry containing food wastes, oil, grease, detergents, and
degreasers.
PLEASE NOTE: A c:ommon stormwater �lollution probfem associated wi[h the food
service industry is the discharge of washwater into alleys and gutters, and the hosing
down of outdoor areas. Often, these activities flush pollutants into the storm drain
system. The discharges of poilulants is strict/y prohibited by local ordinances and
state and federel reguiations.
•
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'v w�., e ,d, o � . �. _ v �„„ ,� ,� ��.� � „t �,. y "�v�" ,� ° � R
r � ' � ^ � ` �'tY ^ s r� ��. �'.
�s,� �, � �
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� �,_ �,.. � , . �� .� �, �` � ��� ,� � ti ',�
Cleanin' It Right ... Proper Storage and
Pour mop and wash water into the mop sink Disposal ...
or down floor drains ... not into gutters, General cleaners, floorcieaners, solvents.
alleys, and detergents often
parking lots or contain toxic substances.
a storm drain. Read labels oarefully and -
Wash greasy = store and dispose of these
equipment only __ products properiy. ` �
in designated == REMEMBER: Don't throw �
wash areas -- toxic waste into the trash
p o�perlye or into a storm drain. To � �
connected to report toxic spill calt 91L �
the sewer system .with an appropriate For information on
oillwaler separator. Aiso, avoid washing hazardaus waste pick-up
kitchen mats, garbage containers, and other call (9p9) 358-5055.
• items in areas where wastewater is likely to
flow into a storm drain.
Grease and Oil . . .
Watch Out For Spills ... Ha�dleanddisposeofgreaseproperly. Save
Usedrymethodsforspillcleanup.Don'those used cooking grease and oil for recycling in
down outside spills. tal�ow bins or sealed containers. Never pour
U s e r a g s o r grease into a sink, tloor drain, dumpster or
�� storrn drain. '�
_ absorbents such as
cat litter and then �atch out for,
u,* �,Ii I �� dispose of in the andreportto
I�� garbage, or handle management, ,
- i as hazardous waste overflowing
/ �. as apprppriate. if grease : _
r�:-o- interce tors. �
�� �-, necessary, mop the P �
�—� -_� area with a mi�imum Ca0 (909) 358-5172
amountofwater. tordisposal T
information.
Everyone contributes a little to the problem of stormwater pollution, Now it's time for
•
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Vl 'p P�4 a j. � ➢`1
�. �4"' .a AP � 'Y"� L 1 � a . �
I
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9
� � ��. °' �'�' �`v�. . .'��}�4^�k-'�� L+h�.:�:
t F
. s4YLDD .�....� .., t�R. ..:.. .t»i.. ���, i+ "^. .3.. S ... -e�- � ... , .
How `Bout That OutdooriSidewalk
Dumpster . . . Areas . . .
Keep dumpster and loading dock areas dean. Sweep up food paRicies, cigarette butts, and
Control Iitter by sweeping - don't hose down trash from outdoor dining areas before
the area. Replace rinsing or steam cleaning. ,,,�
leaky dumpsters - Qon't use toxic bleaches
and keep lids � ordetergentswhen =_,�; ' I
closed to keep out � you pressure wash � �
rainwater. - outdoor dining
areas, entrances
or surrounding ______
sidewalk areas. ���
� ` . �
�� � �\
�-�:� ��, � �
,>
• You may be already irr�plementing many o/
Use Water-Friendl the BMPs prescribed in this brochure.
y However, if you discover any poteniial
Products . problem areas, please consider using one or
Whenever possible, purchase water-based moreo(therecommertdedBMPS.
cleaning products. Look for products
labeled "non-toxic," A/so, please note that the Riversrde Counry
non-petroleum based," Environmenfal Nealth Department will
"ammonia-free," monitor potential sources of stormwater
"phosphate-free," � �— poRutipn activitres during regula�ty scheduled
and"perfume-(ree," �-"��\ inspectionsoffoodservicelacilities. IfHealth
or "readily �" DepaRment staff observe activities which
biodegradable." i._�- °_ - may be contributing to stormwater po�lution,
-�i�' /�, i'� suggesliorrs wif! be provided and/or use of
i`� �` " prescribed BMPS listed in this brochure wif�
� beo(fered.
Please remember:
M
ONLV R,4IN /N THE ORA�
all of us ta became part of the solution!
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T
�� �� � _
S }� �.
����. - „�
�-HeipfuBitel�phone numbers��and links: ,� � ��� „�
� �� ,._�. � �
,.� ��.��:
WATER AGENCY LIST � ���/� � `
in Riverside County ��o�m��� .������ � .
Ciry of Banning (951) 9223130 �„ � � '
City ol Beaumonl (951) 769-8520 ` " �.� -= A � �
i
City of Blythe (760) 922-6t61 �� yQU�j��u�� ^ ��'f y�i�s.
City of Coachella {760) 398-3502 s�,� b
Coachella Valie Water Disirict 760 398-2651 ��
Y I ) .s. � n� �
CityofCorona f951)736-2259 � o pTD00� CLEANING
Desert Center. CSA #51 (760) 2273203
Eastem Municipal Water Distrid (951j 928-3777
Elsinore Valley MWD �95,, 6�4-3,46 . ACTIVITIES AHD F�
Farm Mutuai Water Company (951) 244-4�98 �
City of Hemet (951) 765-3712 .
IdyllwildWalerDistrict 1951j659-2743 NON-POINTSOURCE
Jurupa Community Services District (951) 360-8795
LakeHemetMWD (951)658-3247 � ' ��HARGES
Lee Lake Water �istrict (951) 277-�414 �
March Alr Porce Base (951) 666-7000
Mission Springs Water �ishict (760) 329-6448 ��
Ciry of Palm Springs (760) 323-8253
• Rancho CaDallero (957) 780-9272 ,1 ,x _� � ,
Rancho California Water District (957 ) 296-6900 �, . �;� � ; �� s '-�" �'r..
Ripley. CSA #(i2 (760) 922-4951 # �
CIt of Riversitle (951) 351-6170 '`�
Y � � . �"- �., .,. � � y
Rubidoux Community Services �istricl (951) 684-7560 - r��� � , 's� > �, '
Silen[ Valley qub, Inc (951) 849-4501 �� ^a „, �� .
Valley Sanitary District (760) 347-2356 - � � +,�` � � �,
e
We9lem MuniCipal Watet Dishlet (951] 7845000 �'� , a r� ��- �,.,"�,.���",�
Yucaipa Valley Water District (909) 797-5117 � `� '.«.. �
'� t,
, . �u>_, � ��x�k� .
To report illegal dumping into storm drains or ,a �.� �-
cloqged storm drains, please call: � ��
1-800-506-2555 � t '� � ��� � � �' � :
�� t hlwe� k �
Online resourcas Include: !w� d�����q� �fipu►nh���y�q� At ��
(V Y a 0, \II(Fa V� nfi
Riverside County Flood Conirol District outreach �.y,, .. °.�
materia�s page: J 5�dew3lk� p18Zdpo1" 81'klp� I�t „1 �Cf .�y �
www.floodcontroLCO.riverside.w.us -�� "`�. �
� Vehicie wash��g ar etaitin
� �� � �
Califomia Storm Water Qualdy Assoc:iation ' ,) BUildl�f9 87R� f C�$8 �Il; ��
w. �_ cna,OfO Of NY..LC2 bm�handbooks.com -� o-� s'" " . T�
J w0t0fpfOp�17(.J �.;, h. . +
r z r� a e.6�� -
State Wa[er Resources Conhol Board, Wa[er Quality � Equipment cleanrng or�de rea in�� ��
wwwswrcb.ca.aovlsrormwtrlindex.html �� - >'� ��' - xx�,� ; �
"�,,� ,� ;. '
U S. Environmental Protection Agency '�� �� ".� '
, �x e �
� "
�= v�^=_aovl000No2homeforopram�!b�sorac.htm ` '" � � ��?� .
, . a ,���� , ��6
•
9
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� ' ef 6 'P "'�r S h _ Y � b w ��. S.� k m.
° -F P"-Sr �'�r+v�r���S��� ��.gJ"'� l� °Y sv ����/f�� 1�.''�����
' . . .. ' f � �"' . �":' i a ..`.`�� u�,� ' c � . '�': r ` ; �
�s� T��se uiticiin�s Far u�� o�r� i��n
�O �OT ... dispose of water �O �OT ... Dispose of leftover
containing soap or any other type of cleaning agents into the gutter. storm drain �
cleaning agent into a storm drain or water or sanitary sewer.
body. This is a direct violation of state and/or
local regulations. Because wash water from �O ... understand that wash water
cleaning parking areas may contain metallic (without soap) used to remove dust from a
brake pad dust, oil and other automotive clean vehicle may be discharged to a street
fluids, litter, food wastes and other or drain. Wash water from sidewalk, plaza,
materials, if should never be discharged to and buiiding surface cleaning may go into a
a street, gutter or storm drain. street or storm drain IF ALL of the following
conditions are met
�O ... dispose of small amounts of 1, The surface being washed is free of
wash water from cleaning building residual oil, debris and other materials
• exteriors, sidewalks or plazas onto by using dry cieanup methods (i.e.,
landscaped or unpaved surfaces, provided sweeping, and cleaning any oil or
you have the owner's permission and the chemical spills with rags or other
discharge will not cause nuisance problems absorbent materiais before using !
or flow into a street or storm drain. water). '
�O ... check with your sanitary sewer 2• Washing is done with water only, not
agencys policies and requirements withsoaporotherdeaningmaterials. '
conceming wash water disposal. Wash 3. You have not used the water to remove
water from outdoor cleaning activities may paint from surfaces during cleaning.
be acceptable for disposal to the sanitary
sewer with specific permission. See the list CA�� �-80� -506-2555
on the back of this Ayer for phone numbers TO REPORT ILLEGAL POLLUTING
of the sanitary sewer agencies in your area. OF STORM DRAINS
�O ... Understand that mobile auto
detailers should divert wash water to �� s��_.
landscaped or dirt areas. Be aware that � "��
- soapy wash water may damage � a �'�" '•'
- landscaping. Residuaf wash water may �• �
— remain on paved surfaces to evaporate.
Residues shouid be swept up and disposed or visit
of. www.floodcontroi.co.riverside.ca.us
•
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�
IXJ�U ���13#�Li� ���� m.*�.� �F�,-��'.r �3 ��.F �� �� ✓ `c.'J.sr�,�C '
� ��,'..` °"` v ' � x � ;, •., , `i s �.+. ��: `� ' :s . , �. d`�y , "" . '� . � � - . _ .
�a�a�1=���6�a�a�� ��������6� ������ ����a��i�����Q � �
USING CLEANING AGENTS: OrHER TiPS ro HELP PROrECr OuR
WATER . . .
If you must use soap, use biodegradable/
phosphate-free cleaners. Although the use ot SCREENING WASH WATER
nontoxic cleaning products is strongly
encouraged, do understand that these A thorough dry Geanup before washing
products can degrade water quality. The exterior surfaces such as building and decks
discharge of these products into the street, `�'�thout loose paint, sidewalks, or plaza
gutters, storm drain system or watenvays is areas, should be sufficient to protect
prohibited by local ordinances and the State �eceiving waters. HOWEVER, if any debris
Water Code. Avoid use of petroleum-based (solids) could enter storm drains or remain in
cleaning products. the gutter or street after cleaning, wash water
should fi�stpass through a"20 mesh" or finer
screen to catch the solid materiafs, the mesh
°� ' �, . shouid then be disposed of in the trash.
o ° " j � . �,
! DRAIN INLET PROTECTION/C6NTAINMENT 8.
• �" � I COILECTION OF WASN WATER
�r,� � b��r;� t
„ y , , � a -�
; �,.,�r� � „� Q Sand bags can be used to create a barrier
�;x *^ around storm drain inlets.
q � r � ss' , Q � � .
,� �����, � Q Plugs or rubber mats can be used to
r� �
� temporarily seal storm drain openings.
.
g � �, f� �--�,$;�, Q Containment pads, temporary berms or
`°�� a ti� ¢ �° ;' vacuum brooms can be used to contain
_ D, ;
°' -� �`^� �, and collectwash water.
� EQUIPMENT AND SUPPLIES
�
': �"� 1 "? Special materiais such as absorbents, storm
drain plugs and seals, smail sump pumps,
When cleaning surfaces with a high-pressure and vacuum booms are available from many
washer or steam cleaning methods, vendors. For more i�formation, check
additional precautions should be taken to catalogs such as New Pig (800-468-4647,
prevent the discharge of poliutants into the �_newpig.com), Lab Safety Supply (800-
storm drain system. These [wo methods of 356-�783), C&H (800-558-9966), and W.W.
surfacecleaning,ascomparedtotheuseofa Grainger {800-994-9174); or call the
low-pressure hose, can remove additional Cleaning Equipment Trade Association (800-
materiais that can contaminate local 441-0111) or the Power Washers of North
waterways. America (800-393-PWNA).
u � 1 I
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�
�6-�� " ��� �'s�`�u � � 1��� ,., ��'�`��� axx'^;' , , . .
�. , a , a Y ��� y�,� . a�.. �,, where the,water dctually goes?
( Storm Dr�ins �r� not
; .--' I 1 �onncct�d to �anitarv
`. - � scwer systems and
treatan�nt plants9
The primary purpose of storm drains is to carry rain water away from deve�oped areas to prevent
! flooding. Poliutants discharged to storm drains are conveyed directly into rivers, lakes and streams.
� Soaps, degreasers, automotive fluids, litter and a host of other materials washed off buildings,
� sidewalks, plazas, parking areas, vehicles and equipment must be properly managed to prevent the
pollution of rivers, lakes and streams.
Preventing pollution is the best way to protect the environment. In addition, it is much easier a�d less
costfy than cleaning up "after the fact."
� ��•�P������a:�� h��•% , Th';C Q andCaunt�of�Rsuerside
, � �, � M £� a � � � . ����- _��,�� .
� � � � ��,� ��� egi�ona,i��Water Quality Control Board
��,. ;� b � �.. ���;. :�
A WATERSHED is an area of land that catches rain and snow, then drains or seeps into a marsh,
stream, nver, Iake or groundwater. Watersheds come in aIl shapes and sizes, crossing county, state,
and national boundaries, therefore many of our activities at home, work or play affer.t the qualiry of our
watersheds.
In accordance with state and federal Iaw to protect our watersheds, the CITIES AND COUNTY OF
; RIVERSIDE have adopted ordinances for stormwater management and discharge control to prohibit
the discharge of wastes into the storm drain system or local surface waters. This WCIUDES
discharge of wash water from outdoor cleaning activities which may contain pollutants such as oil,
� grease, detergenl, degreasers, trash, pet waste orother materials.
r�,�
�.. \ j � _
�;<, �- � .� ,,'' � � � ,� � :�' *
. ���
�
i
PLEASE NOTE: Check wilh your Regional Water duality Control Board, local municipal
V govemment and water agencies on what the rest�ictions are in your area.
i
•
iz
Water Quality Management Plan (WQMP)
FRONTSTRGETPLAZA
� Appendix E
Soils Report
NOT REQUIRED
�
•
Water Quality Management Plan (WQMP)
FRONTSTREETPLAZA
� Appendix F
Treatment Control BMP Sizing Calculations and Design Details
•
•
• Worksheet 2
Design Procedure Form for Design Flow
Uniform Intensity Design Flow
Designer: xECTOR coxREA
Company: xnc CIVIL ENGINEERING
Date:
Project:
Location:
1. Determine Impervious Percentage
0.46
a. Determine total tributary area A� = acres (1)
b. Determine Impervious % i= 9 6 % (2)
2. Determine Runoff Coefficient Values
Use Table 4 and impervious % found in step 1
a. A Soil Runoff Coefficient C = (3)
• b. B Soil Runoff Coefficient Cb = . 8 6 (4)
a C Soil Runoff Coefficient C� _ (5)
d. D Soil Runoff Coefficient Cd = (6)
3. Determine the Area decimal fraction of each soil type
in tributary area
a. Area of A Soil /(1J = A = (7)
b. Area of B Soil /(1) = A = 1 (8)
c. Area of C Soil /(1) = A� _ (9)
d. Area of D Soil /(1) = A = (10)
4. Determine Runoff Coe�cient
a. C = (3)x(7) + (4)x(8) * (S)x(9) + (8)x(1�) = C = o . e 6 (11)
5. Determine BMP Design flow
ft
a. Q eMP = C x I x A=(11) x 0.2 x(1) QBMP - O. O H S ��y�
•
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• Table 4. Runoff Coefficients for an Intensit = 02 '"/h, for Urban Soil T es'
� Impervious % r � ,A Soil � � ;£ B Soil ; C Soil � D Soii ' -
`' ` .� �, h `';" . :RI ,32,.,;; ,.;,,RI.=56`, RI . 69,' . E';,;RIA,,,75, ::
0(Natural) 0.06 0.14 0.23 0.28
5 0.10 0.18 0.26 0.31
10 0.14 0.22 0.29 0.34
15 0.19 0.26 0.33 0.37
20 1-Acre 0.23 0.30 0.36 0.40
25 0.27 0.33 0.39 0.43
30 0.31 0.37 0.43 0.47
35 0.35 0.41 0.46 0.50
40 (1/2-Acre) 0.40 0.45 0.50 0.53
45 0.44 0.48 0.53 0.56
50 1/4-Acre 0.48 0.52 0.56 0.59
55 0.52 0.56 0.60 0.62
60 0.56 0.60 0.63 0.65
65 Condominiums 0.61 0.64 0.66 0.68
70 0.65 0.67 0.70 0.71
75 Mobilehomes 0.69 0.71 0.73 0.74
80 A artments 0.73 0.75 0.77 0.78
• 85 0.77 0.79 0.80 0.81
90 Commercial 0.82 0.82 0.83 0.84
95 0.86 0.86 0.87 0.87
100 0.90 0.90 0.90 0.90
'Complete DistricYs standards can be found in the Riverside County Flood Control Hydrology Manuai
•
9
• Worksheet 1
Design Procedure for BMP Design Volume
85 percentile runoff event
D@Slgl�@r. HECTOR CORREA
Company: HLC CIVIL ENGINEERING
Date:
Project:
Location: TEMECULa
1. Create Unit Storage Volume Graph
a. Site location (Township, Range, and T$S &R 3 W
Section). Section 3 ���
b. Slope value from the Design Volume 1.24
Curve in Appendix A. Slope = (
c. Plot this value on the Unit Storage
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 Coeffcient
a. Determine total impervious area A; mPerv ; o � s - o. a6 acres (5J
b. Determine total tributary area A� = o-4a acres (6)
c. Determine Impervious fraction
i=(5)�(s) �_ � (�)
d. Use (7J in Fiyure 1 to find Runoff
ORC=.858i -.78i C= a.9a �g�
3. Determine 85% Unit Storage Volume
a Use (8) in Figure 2
Draw a Vertical line from (8) to the
graph, then a Horizontal line to the in-acre
desired V� value. �= 1.1s acre (9)
4. Determine Design Storage Volume
a. VBMP =(9) x(6) [in acres] Vgry7p = 0. 529 in (10)
b. VBMP = (10) l 12 [ft- acres] Vgry�p = 0. 044 ft-acre (11)
C. VBMp =���� X 43 �ft UBMP - 1917 ft ��Z�
Notes:
•
7
• 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
in the design of selected BMPs presented in this handbook.
1.00
0.90
� 0.80
°—' 0.70
.�
� 0.60 -
0 0.50 -
V 0.40
�
�
� 0.30
� � 0.20 -
0.10
0.00 �
0% 10 20 30 40 50 60 70 80 90 100
% % % % % % % % % %
% Im pervious
Figure 1. Impervious — Coefficient Curve (WEF/ASCE Method')
• � Imperoiousness is Oie dccimal fraction of thc �ota] catclunent covered by [I�e sum of roads, parking lots,
sidcwalks. rooftops, and oll�er impenneable surfaces of an �rban landscape.
5
g
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U
w �
� N
W �
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'___ ______ _____ _____ _____ ____'_ '__'_ '_. . _"______ ____ _____ ______ _ _ ' "_ _ _ ___ _____ _____ �
,_. ___ ._'_ _ _.._ _ _. __
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. . . . . . . . . . . . . . . . . .
� � � � � � � � � O O O O O O O O O
• 85% Unit Storage Volume (Vu)
6
Watcr Quality Managcrocnt Plan (WQMP)
FRONT STRGGT PLAZA
•
CONTECH STORMFILTER CARTRIDGE
CALCULATION
�
�
• . . . BALIAST
_ , (SEE NOTE 8)
48" (d
A
1
W LET PIPE
(SEE NOTES 5 4 6)
B'y I 2"�J I1DPE OUTLET
STUB (SEE NOTES 5 C 6)
MANHOLE STORMFILTER - PLAN VIEW �1�
1
30"OJ FRAME
AND COVEK (STD)
CONCRETE (SEE NOTE 4)
• GRADE RING
STEP
(TYP)
WLET PIPE � HDPE OUTLEf
(SEE NOTES 5 d 6) RISER WITI1
SCUM BAFFLE
4'_6" MIN
� �,a (SEE NOTE 7)
STORMFILTER CARTRIDGE
(71'P) (SEE NOTE 2)
BALlAST � �•
(SEE NOTE 8) _
F1EI� d
�� �—yWIDTFI�. � �UNDERDRAW SEE DETAIL 2/2
MANIFOLD
MANHOLE STORMFILTER - SECTION VIEW A
1
Tt1E STORMWATER MANAGEMENT
SW�mFA[er�
U.S.PATENT Nc.5,322.629,
No. 5J07527. No. 6A2],639
No. 6,649.048, No, 5,624,5�6,
AND OT11ER U.S. AND FOREIGN
�2006 CONTECH Stormwater Solutions PAiENTS PENDING
DMWING
• A��/��ITt'AIJ� PRECAST 48" MANHOLE STORMFILTER
�iij��i� i ��:�! ,�
PLAN AND SECTION VIEWS
STORMWA7ER STANDARD DETAIL
SOLUTIONSr ,a
LOnt¢ChStormwa�¢cwm DATE:09I28N5 SCALE'.NONE FILENAME:MHSF3<6PG�TL DRAWN:MJW CHECKED:ARG
Determining the number of cartridges for a highly impervious site
• To determine the number of StormFilter cartridges needed for a highly impervious site �
(>_70% impervious):
1. Calculate the peak flow rate from the water quality storm (Q for your site using the
approved hydrologic models established by your local agency. If there are no agency
guidelines, we recommend using the Santa Barbara Urban Hydrograph Method.
2. Calculate the number of cartridges required to treat lhe peak water quality Flow rate (N for
your site.
~ Nflow — Qtreat �449 gpm/cfs � Qcart 9Pm/cart�
Notes:
. Assume Q�,� = 15 9pm���t, which is ihe maximum flow rate that an individual cartridge can
treat. In some areas or situations, cartridges with a flow rate other than 15 9pm may be
required, resulting in a different Q can value.
• If the number of cartridges is nol a whole number, round Ihe number of cartridges up to the
next whole number.
Example of cartndge numbe� s¢mg for a highly impernous"s�te �,�� �" ��' ��� ,�, j
� y' S v - r' � t n F D �� � a . t 1 x 7't, ,�
1� Assume that a site has a peak flow rate of 0 44 crs h,��,,�� }� � 4 �, k z t - .
.rv rH L.�b'a'�n E '` Re �'"iY . n: Yx r ar�,�s �r'a-�r i � �ts� n 'a �3' Y2 e`� Jr P' a. „t� F M. " �`.
��,2 Determine the number of cartndges reqwred to treat this flow rate >>� ;��=w
� . � > �r � , .� v �`
< , � t
r . °� Nflow - .� 0 44 ds)(449 gpmJcfs /¢.15 gpm/oart) 13 2 aertndges � + :�' � �, ; � � .. s ,
r 1 L �.a. ,,, , �,r s�,� c� � a ix�+ ; t r.�, ; z c..
/ z t�� y�Y aF 1 ✓ r '� t F' �k;, �..} .a. �-N` �; u y,sr m �; , a.a% a-.. �.. 2, �.
Answer Rounding,up to the next whoie the number of reqwred cartndges is � � rE °
� �.�, . �
� FROM WORKSEET 2- Q=0.08cfs
N=(0.08cfs)(449gpm/cfs)/(15gpm/cartridge=2.39 cart.
Use 3 Cartridaes
�
�02006 CONTECH Stormwater Solutions 29
GENERAL NOTES
• I) STORMFILTER BY CONTECYi STORMWATER SOLUTIONS; PORTLAND, OR (800) 548-4667; SCARBOROUGFi, ME (877) 907-8676;
ELKRIDGE, MD (866) 740-3318.
2) FILTER CARTRICGE(5) TO BE SIPHON-AQUATED AND SELF-CLEANING. STANDARD DEfAIL St10WS MAXIMUM NUMBER OF
CARTRIDGES. ACTUAL NUMBER REQUIRED TO BE SPEQFIED ON SITE PLANS OR IN DATA TABLE BELOW.
3) PRECAST MANHOLE STRUCTURE TO BE CONSTRUCTED IN ACCORDANCE WITH ASTM C478. CETAIL REFLECTS DESIGN INTENT
ONLY. AQUAL DIMENSIONS AND CONFIGURATION OF STRUQURE WILL BE Sh10WN ON PROOUQION SHOP DRAWIN6.
4) STRUCTURE AND ACCE55 COVERS TO MEET AASFITO F1-20 LOAD RATING.
5) STOKMFILTER REQUIRES 2.3 FEET OF DROP FROM WLET TO OUTLET. IF LE55 DROP IS AVAIIABLE, CONTACT CONTEGFt
STORMWATER SOWTIONS. MINIMUM ANGLE BETWEFN INLET AND OUTLEf IS 45°.
6) INLET PIPING TO BE SPEQFIED BY ENGWEER AND PROVIDED BY CONTRACTOR. PRECAST MANYIOLE STORMFILTER EQUIPPED
WITY1 A DUAL DIAMETER FiDPE OUTLET STUB AND SAND COLLAR. EIGFIT INCH DIAMETFR OUTLET SECTION MAY BE SEPARATED
FROM OUTLET STU6 AT MOLDED-IN CUT LINE TO ACCOMMODATE A I 2 INCY1 OUTLET PIPE. CONNEQION TO DOWNSTREAM
PIPING TO BE MADE USING A FLEXIBLE COUPLING OR EGGENTRIC REDUCER, AS REQUIRED. COUPLING BY FERNCO OR EQUAL AND
PROVIDED 6Y CONTRACTOR.
7) PROVIDE MINIMUM CLEARANCE FOR MAWTENANCE ACCE55. IF A Sh1ALLOWER SYSTEM IS RE�UIRED, CONTACT COMECH
STORMWATER SOLUTIONS FOR OTHER OPTIONS.
8) ANTI-FLOTATION BALIAST TO 8E SPEQFIED BY ENGINEER AND PROVIDED BY CONTRACTOR, IF REQUIRED. BALLAST TO BE SET
AROUND TY1E PERIMETER OF THE STRUCTURE.
9) ALL SiORMFILTERS REQUIRE REGULAR MAINTENANCE. REFER TO OPERATION AND MAMTENANCE GUIDELINES FOR MORE
INFORMATION.
PRECAST MANFIOLE
so^v� FKa„�ne STORM FI LTER DATA
�
,� i" - AND COVER (STD) STRUCTURE ID XXX
�
WATER QUALIN FLOW RATE (cfs) X.XX
!�<�C;. PEAK FLOW RATE (< I cfs) X.XX
�� y� ��! : RETURN PERIOD OF PEAK FLOW ( rs) XXX
: .'�:�' # OF CARTRIDGES REQUIRED XX
.�•� �. �'_�:� �',. CARTRIDGE FLOW RATE ( I 5 or 7.5 m) XX
'�' ���� •:��.:: MEDIA TYPE (CSF, PERLITE, ZPG) XXXXX
' %����• ''.:..• � ••: ��.:.' RIM ELEVATION XXX.XX'
-"'sl.i';:,....,.. ��_
. '`h T i ✓ . .
..� .� PIPE DATA: LE. ORIENTATION MATERIAL DIAMETEP.
• ....: �.. . INLET PIPE # I XXX.XX' XX° XXX XX��
INLET PIPE #2 XXX.%X' XX° XXX XX"
MANHOLESTORMFILTER-TOPVIEW �� our�ersrue wcx.xx o° xwc a°iiz°
2 ECCENTRIC REDUCER YES\NO SIZE
(BY CONTRACTOR) XXX XX^ x XX°
OUTLET SAND COLIAR ANTI-FLOTATION BALLAST WIDThi YIEIGYIT
RISER . 12"m OUTLET STUB � �
a' MOLDED-IN CUT LINE NOTES/SPECIAL REQUIREMENTS: PIPE ORIENTATION KEY:
90°
. 8"m OUTLET STUB /��\
I 80° —1(—}— J—O°
�T
270°
�� e OUTLET PIPE
. . � (BY CONTRACTOPJ
� ° ' COUPLING
(BY CONTRACTO�
(SEE NOTE 6)
BALLAST
GROUT (SEE NOTE 8)
(BY CONTRACTOPJ TF1E SiORMWATER MANAGEMENT
StormFJter�
MANHOLE STORMFILTER - OUTLET DETAIL 2 No's'.io�ES"zi.
No. 6,649,048, No. 5,624,5]6,
2 AND OTIIER U.S. AND FOREIGN
�2006 CONTECH Stormwater Solutions PATENTS PENDING
DRAWING
• A����ITCAL.1� PRECAST 48" MANHOLE STORMFILTER
�iij��:� i ��! 2
STORMWATER TOP AND SECTION VIEWS, NOTES AND DATA
SOLUTIONS.� STANDARD DETAIL �
contechslortnwa�e�.com DATE:09/26Ip5 SGALE:NONE FILENAME:MHSF3d0PC-DTL DRAWN:MJW CHECKED:ARG
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_^ C
Maintenance Guidelines In addition to these two activities, it is important to check
The primary purpose of the Stormwater Management the condition of the StormFilter unit after major storms for
StormFilter" is to filter out and prevent pollutants from entering Potential damage caused by high flows and for high sediment
• our waterways. Like any effective filtration rystem, periodically accumulation that may be caused by localized erosion in the
these pollutants must be removed to restore the StormFilter to its drainage area. It may be necessary to adjust the inspection/
full efficiency and effediveness. maintenance schedule depending on the actual operating
conditions enmuntered by the system. In general, inspection
Maintenance requirements and frequency are dependent on the activities can be conducted at any time, and maintenance should
pollutant load characteristics of each site. Maintenance activities occur, if warranted, in late summer to early fall when flows into
may be required in the event of a chemical spill or due to the system are not likely to be present.
excessive sediment loading from site erosion or extreme storms. It
is a good practice to inspect the system after major storm events. MdIC1t2117C1C2 FC2C�U211C�/
The primary factor controlling timing of maintenance of the
Maintenance Procedures StormFilter is sediment loading.
Although there are likely many effective maintenance
options, we believe the following procedure is efficient and A properly functioning system will remove solids from water by
can be implemented using common equipment and existing trapping particulates in the porous structure of the filter media
maintenance prommis. A two step procedure is recommended inside the cartridges. The flow through the rystem will nawrally
as follows: decrease as more and more particulates are trapped Eventually
the flow through the cartridges will be low enough to require
1. Inspection replacement. It may be possible to extend the usable span of the
Inspection of the vault interior to determine the need for cartridges by removing sediment from upstream trapping devices
maintenance. on a routine as-needed basis in order to prevent material from
being re-suspended and discharged to the StormFilter treatment
2. Maintenance system.
Cartridge replacement
Sediment removal Site mnditions greatly influence maintenance requirements.
StormFilter units located in areas with erosion or active
Inspection and Maintenance Timing construction may need to be inspected and maintained more
At least one scheduled inspection should take place per year with often than those with fully stabilized surface conditions.
• maintenance following as warranted. The maintenance frequency may be adjusted as additional
First, an inspection should be done before the winter season. monitoring information becomes available during the inspection
During the inspection the need for maintenance should be program. Areas that develop known problems should be
determined and, if disposal during maintenance will be required, inspeded more frequently than areas that demonstrate no
samples of the accumulated sediments and media should be problems, particularly after major smrms. Ultimately, inspeaion
obtained. and maintenance activities should be scheduled based on the
historic remrds and characteristia of an individual Stormfilter
Second, if warranted, a maintenance (replawment of the filter system or site. It is recommended that the site owner develop
cartridges and removal of accumulated sediments) should be a database to properly manage StormFilter inspection and
performed during periods of dry weather. maintenance programs.
��', �� Prior to the development of the maintenance database, the
following maintenance frequencies should be followed:
Inspection
� 1� ': F
..y-. ,- r� One time per year
�� .� „�t, � ' Y � After major storms
. J �{+ �` r � � rr+ � -� Maintenance
� � ��
:, F z _ � I ,�, As needed, based on results of inspection (The average
"` t� " .�, .. � maintenance lifecyde is approximately 1-3 years)
` � - � � Per Regulatory requirement
a - "'�-"„� -
� , :
.. g �s, � � � '�� � "' � ' In the event of a chemical spill
a � � ,:
'�� ��"'7, Frequencies should be updated as required. The recommended
'$i�' : � �,i�� �° ;, � initial frequency for inspection is one time per year. StormFilter
�� r " .`�.��,.� � � units should be inspected after major storms.
• r � �, ,$ y���„���� ' _.i
t K ' � 1 � iSn �'" "'u'd'"' `•�
'�`t W"'" -�_fw
2
Sediment removal and cartridge replacement on an as needed 7. Remove safery equipment.
basis is remmmended unless site conditions warrant. S. If appropriate, make notes about the local drainage area
Once an understanding of site characteristics has been relative to ongoing construction, erosion problems, or high
• established, maintenance may not be needed for one to three loading of other materials to the rystem.
yeaa, but inspection is warranted and recommended annually. 9. Discuss conditions that suggest maintenance and make
decision as to weather or not maintenanw is needed.
Inspection Procedures Maintenance Decision Tree
The primary goal of an inspection is to assess the condition of The need for maintenance is rypically based on results of the
the cartridges relative to the level of visual sediment loading as inspectioa The following Maintenance Decision Tree should be used as
it relates to decreased treatment capacity. It may be desirable to a general guide. (Other factors, such as Regulatory Requirements, may
conduct this inspection during a storm to observe the relative need to be considered)
flow through the filter cartridges. If the submerged cartridges .����� .��
are severely plugged, then typically large amounts of sediments �. y 9•� �'"����'�' 'ry�� ��"
will be present and very little flow will be discharged from the � ', !�. • .+e'�, v '
drainage pipes. If this is the case, then maintenance is warranted i�� �
and the cartridges need to be replaced. 4 � .�
Warning: In the case of a spill, the worker should abort ��
inspection activities until the proper guidance is obtained.
Notify the local hazard mntrol agency and CONTECH
Stormwater Solutions immediately.
To conduct an inspection:
Important Inspection should'be performed by a pe�Son who� �' f
� ,
� ��is familiarwith the operation and��configuration��of the . �*, �, �.,� . � �M� f � �
,�'StormFilterfreatment unit . . - >
. � �:�., , . ,.:-.. � - ,
..�_. ._....___._.... .__...__. . _�. .. __� � .� ':
._ _ . q .
1. If applicable, set up safety equipment to protect and notify
surrounding vehide and pedestrian traffic.
• 2. Visually inspect the extemal condition of the unit and take 1. Sediment loading on the vault floor.
notes conceming defects/problems. a. If >4" of accumulated sediment, maintenance is
required.
�+�' i:. 1!� 2. Sediment loading on top of the cartridge.
,
�+ + � a. If >1/4" of accumulation, maintenance is required.
r
�� ' . ' 3. Submerged cartridges.
. � _ ;t, . -. �.. ..
.M ,.,,, � a. If >4" of static water in the cartridge bay for more
?~- ��"�,�?� . t� that 24 hours after end of rain event, maintenance is
. �,�r �,� . , � �'� � .� required.
� ',�*��� � 4. Plugged media.
� - .. � .� ;,;, � �:
. �;;�""°t a. If pore space between media granules is absent,
�� - �, � ` '� �' maintenance is required.
��.�'�n_!x.u1".�.'�-`�. '..�. 'P l �
;. i--- -��'� �,y, :, ' � ' , . 5. Bypass condition.
0.
.. "`• a. If inspection is conducted during an average rain fall
�.'?' �'�`��►fwt �'� �`"v.x.;, event and StormFilter remains in bypass condition
�� ' � � . ,. �.�,r� � �r,� (water over the intemal outlet baffle wall or submerged
. ��':�.+�i����'�,` 'st�t,° � ;� cartridges), maintenance is required.
3. Open the access portals to the vault and allow the system vent. 6. Hazardous material release.
4. Without entering the vault, visually inspect the inside of the a. If hazardous material release (automotive fluids or other)
unit, and note accumulations of liquids and solids. is reported, maintenance is required.
5. Be sure to record the level of sediment build-up on the floor of 7. p�onounced scum line.
the vault, in the forebay, and on top of the cartridges. If flow a. If pronounced scum line (say >_ 1/4" thick) is present
• is occurring, note the flow of water per drainage pipe. Record above top cap, maintenance is required.
all observations. Digital pidures are valuable for historical
documentation. 8. Calendar Lifecyde.
6. Close and fasten the access portals. a. If system has not been maintained for 3 years
maintenance is required.
3
Assumptions
• No rainfall for 24 hours or more
�:
• • No upstream detention (at least not draining into StormFilter) �- �
• Structure is online r .�,
.-� �
• Outlet pipe is dear of obstruction �+ �� � .
• Construction bypass is plugged � j+ A �-,�
Y .
- 4
Maintenance ` °'
�,. �
Depending on the configuration of the particular system, �' �`�`� � , �
maintenance personnel will be requlred to enter the vault to i �'' '�. ;�^'� . �
perform the maintenance.
, ` 1 ..
Important: If vault entry is required, OSHA rules for confined _ ,; -
space entry must be followed. " - F `
} i
Filter cartridge replacement should occur during dry weather. _,'. � 4 �y,{:� „
It may be necessary to plug the filter Inlet pipe if base flows is -� '+� ;� j��a ��
occurring. •� � `�W�'"
r
� �
Replacement cartridges can be delivered to the site or customers �„� � °' � _ �
facilit . Information concemin how to obtain the re lacement '
Y 9 P '�'� � p`,y -� -� �. �
� "t`:�, _ ' .s�
cartridges is available from CONTECH Stormwater Solutions. ��-� � � � i . � ,
r
Warning: In the case of a spill, the maintenance personnel ��
should abort maintenanw activities until the proper
guidance is obtained. Notify the local hazard control _ �.�.-..._� .
agency and COMECH Stormwater Solutions immediately. _ +�?y �, �, r ,
. C� ' �, �''.
To conduct cartridge replawment and sediment removal
maintenance: �.Important::Note,that caitndges containingJeaf:media (CSF) do
� 1. If applicable, set up safety equipment to protect malntenance i. ���nobrequire unscrewing fromtheir connectors. Take,cere ��
personnel and pedestrians from site hazards. r��"� not to.damage the��manifold connectors. �ThiSconnector �. ��
2. Visually inspect the external condition of the unit and take " � should^remam'installed in the:manifold be �°
notes conceming defects/problems. �,.�apped.during the maintenance��activiry-�to�pievent '
�, ".� sediments from entering the underdrain' manifold :`
3. Open the dooa (access portals) to the vault and allow the - - �� � - -�- �- -� � � � '--- - � - = � -'� �-� - -�
system to vent. B. Remove the used cartridges (up to 250 Ibs. each) from the
4. Without entering the vault, give the inside of the unit, vault.
induding components, a general condition inspection. i�lmportant: Care musYbe�`used to��avoid damaging�the '� ��
5. Make notes about the external and internal condition of ``� , cartridgesduring� removaf and installation. The cost of ', ,
the vault. Give particular attention to recording the level of 'repairing�components damaged�during maintenance �
sediment build-up on the floor of the vault, in the forebay, ' will be��the.responsibility of thebwnerLnless CONTECH _.
and on top of the intemal components. �'��. Storinwater.SOlutions,perforrns the maintenance activities:
6. Using appropriate equipment offload the replacement ,. and(damage is',not-rela4ed<to discharges�to the system:;',
cartridges (up to 150 Ibs. each) and set aside. C Set�the used cartridge aside or load onto the hauling
7. Remove used cartridges from the vault using one of the truck.
following methods:
D. Continue steps a through c until all cartridges have been
Method 1: removed.
A. This activiry will requlre that maintenance personnel enter
the vault to remove the cartridges from the under drain Method 2:
manifold and place them under the vault opening for A. Enter the vault using appropriate confined space
lifting (removal). Unscrew (counterdockwise rotations) protocols.
each filter cartridge from the underdrain connector.
Roll the loose cartridge, on edge, to a convenient spot B� Unscrew the cartridge cap.
beneath the vault access. C Remove the cartridge hood screws (3) hood and float.
• Using appropriate hoisting equipment, attach a cable D. At location under structure access, tip the cartridge on its
from the boom, crane, or tripod to the loose cartridge. side.
Contact CONTECH Stormwater Solutions for suggested
attachment devices.
4
„Important: Note�that cartridges containing media other than ��' 11. Close and fasten the door.
����the�leaf�media require�unscrewing.from their threaded ;�^:•f �z. Remove safety equipment.
.. ���connectors. �Take care'not to damage,the.manifold �' �3 Finally, dispose of the accumulated materials in accordance
• :�.�connectors, This connector should remairi installed in the� With applicable regulations. Make arrangements to retum the
".manrfold_and�,capped�if;necessary:��� used emotv cartridges to CONTECH Stormwater Solutions.
R Empty the cartridge onto the vauR floor Reassemble the
empTy cartridge. ,�
W..1. C � . V V . . �4 °.. s
E Set the empty, used cartridge aside or load onto the �� . ,
hauling truck. , C� 5�=—:
� < "� � °^�
E Continue steps a through e until all cartridges have been i ��� '` .��� - _-
removed. ���,-' . . . `' :".u
..
, -.��.,�.-�_ .__--� �: • .�. . ...
..., ' ,.. . . . , .. . .. �' �.. w�, . . :.
.. :
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`�±,¢'T”' r..
,,� . _
a.' " ' -.: �
�
_ F.. •... � � - ' .
. • �
"' k y=kt`
t,.. i, � �� �
i,;-' �.
I � . �. ���.. q. _ ', "ri 1
_� sC+ � � ,.,�; �,.�; 2 _ �
. - 1# �� - �� � z"`~ _`i
: - �! >
� � , . ,� � =�- . W ,
+�°T 5 � c ah o 1 �' ' q ���
r :." •. n t. '"°r"� a 5�" %'y 'i ,� s
t� \� 5C�
\ � 1� y �
r
t,� � .
��....T'�C.�t. �.�.
I� fi � ♦ ' .� 4�y{�- .Y . Ry,�•
f.. .r .
£ . `` �. ` a ,� r v
h 4a
• CJ �'� j.$�� 1 ` .}� � r.�"�, � 3 .:�'
i"f., { �-.b"'X s ��"..
+�`z..::�.i�( ... .�M.+�:l�.w r ,. . .
� ' `� . � �►� � . �.�V � � 1 � ". e ' .
I � . � k 4 � � ':'f"" �. [ [ �
� �`�K.E� .n-J' {� 1 i `� P 11' t.�p�
� ,{'� .D f, .+e� -..t,: t�' IM � e Ra ��� ��
�,d J
. #'.Y�F� t', � w`t � ' i . ���,` � .�f' ,. +Y�! . ti, . . , � t�
3
��.cw� , �, .
F >� -
8. Remove accumulated sedlment from the floor of the � � '�''�
' - W t �,... .
vault and from the forebay. This can most effectively be ^`?� ,��+� ` _ �,��
acmmplished by use of a vacuum truck. . �— �� '` � y,., y '"
x �—...,�� .
9. Once the sediments are removed, assess the condition of the -'�'
vault and the condition of the connectors. The connectors : T �' �� '` ' c,. �'�
are short sections of 2-inch schedule 40 PVC, or threaded ^�' �' � y ' }
schedule 80 PVC that should protrude about 1" above the �� � ���"�' `'�=�' "� �
-7 _
floorofthevault.Llghtlywashdownthevaultintenoc .���,,, .'"�'., �,: i
, �;
a. If desired, apply a light coating of FDA approved -,
silicon lube to the outside of the exposed portion of �• ��_.� - �-..�,: `�
the connectors. This ensures a watertight connection �� �
between the cartridge and the drainage pipe.
b. Replace any damaged connedors.
10. Using the vacuum truck boom, crane, or tripod, lower and
install the new cartridges. Once again, take care not to
• damage connections.
5
Related Maintenance Activities - Material Disposal
Performed on an as-needed basis The accumulated sediment found in stormwater treatment
• StormFilter units are often just one of many structures in a more and conveyance systems must be handled and disposed of in
mmprehensive stormwater drainage and treatment system. accordanw with regulatory protocols. It is possible for sediments
to contain measurable mnwntrations of heavy metals and
In order for maintenance of the StormFilter to be successful, it organic chemicals (such as pesticides and petroleum products).
is imperative that all other mmponents be properly maintained. Areas with the greatest potential for high pollutant loading
The maintenance/repair of upstream facilities should be carried indude industrial areas and heavily traveled roads.
out prior to StormFilter maintenance adivities.
Sediments and water must be disposed of in accordance with
In addition to considering upstream facilities, it is also important all applicable waste disposal regulations. When scheduling
to correct any problems identified in the drainage area. Drainage maintenance, consideration must be made for the disposal of
area concerns may indude: erosion problems, heavy oil loading, solid and liquid wastes. This typically requires coordination with
and discharges of inappropriate materials. a local landfill for solid waste disposaL For liquid waste disposal
a number of options are available induding a municipal vacuum
truck decant facility, local waste water treatment plant or on-site
treatment and discharge.
•
� FECYCIED
PAPER
� ��w��
Q'i�'l � �i�
� STU' NAY419�[ �
�'�i911f11R'/S.
800.925.5240
c o n te c h sto r m wa t e r. c o m
Support
• Drawings and specifications are available at contechstormwater.com.
• Site-specific design support is available from our engineers.
�02007 CONTECH Stormwater Solutions
CONTECH Construction Products Inc. provides site solutions for the civil engineering industry. CONTECH's portfolio includes
bridges, drainage, sanitary sewer, stormwater and earth stabilization products. For information on other CONTECH division
offerings, visit contech-cpi.com or call 800338.1122
• Nothing in this catalog should be construed as an expressed warranty or an implied warranty of inerchantability or fitness for
any particular purpose. See the CONTECH standard quotation or acknowledgement for applicable warranties and other terms
and conditions of sale.
I �- . -�.
• I Date: Personnel:
I Location: System Size:
I System Type: Vault ❑ Cast-In-Place ❑ Linear Catch Basin ❑ Manhole ❑ Other ❑
Date:
Sediment Thickness in Forebay:
I Sediment Depth on Vault Floor:
I Structural Damage:
I Estimated Row from Drainage Pipes (if available):
I Cartridges Submerged: Yes � No ❑ Depth of Standing Watec
StormFilter Maintenance Activities (check off if done and give description)
I ❑ Trash and Debris Removal:
I � Minor Strudural Repairs:
I � Drainage Area Report
I ExcessiveOilLoading: Yes � No � Source:
Sediment Accumulation on Pavement: Yes � No � Source�.
I Erosion of Landscaped Areas�. Yes � No � Source:
� Items Needing Further Work:
I Owners should contact the local public works department and inquire about how the department disposes of their street waste
• residuals.
I Other Comments:
�
�
� I
I I
�
�
�
�
I
I
I
I
• I
I
�
�
i
Review the condition reports from the previous inspection visits. I
�
� ' ' ' � •
• I
Date: Perwnnel: I
Location: System Size: I
System Type: Vault ❑ Cast-In-Place ❑ Linear Catch Basin ❑ Manhole ❑ Other ❑ I
List Safery Procedures and Equipment Used:
�
�
�
System Observations
�
Months in Service:
Oil in Forebay: Yes ❑ No ❑ I
Sediment Depth in Forebay: I
Sediment Depth on Vauh Floor: I
Structural Damage:
Dreinage Area Report I
Excessive Oil Loading: Yes ❑ No ❑ Source: - I
Sediment Accumulation on Pavement: Yes � No � Source: I
�rosion of Landscaped Areas: Yes � No � Source: I
StormFilter Cartridge Replacement Maintenance Activities I
Remove Trash and Debris: Yes ❑ No ❑ Details: I
Replace Cartridges: Yes � No � Details: I
Sediment Removed: Yes � No � Details I
Quantity of Sediment Removed (estimate?):
Minor Structural Repairs: Yes � No � Details: I
Residuals (debris, sediment) Disposal Methods: �
Notes: I
�
�
�
�
• I
�
�
. � Evalu�ation �of Storm�rater . � � `
�.. � : - Fil#ration: Systen�s . : � � _. : :
. _ � > : : . . ; . By.JamesLenhart; P.E.
.
�
�P RO F E:S�S�I � O -� ;N �� AL � � � �
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`., ' May 2007 . � , . ,, ' • . �> w�nwa�so�unoNS_
sro
� ap�oF� Professional.Development_Series—
y� F �o
- W :�Ce`: �
°`. �, Evaluation of Stormwater Filtration
dy•.:,-: ;: • y'�
� '�..HOU8 . - ,
SySILemS By James Lenhart, P.E. ,
--� s the need for effective and space-efficient storm- ria. If the faciliry meetr [hese criteria, a pilot project is identi- . �
.�� water treatment grows, there will be an inaeas- fied to evaluate the facility in the field. This paper addresses
� ing number of mmmercial and structural filtration some of the stormwater filtration fundamentals that should �
., rystems offered to regulators. As part of their due be used to evaluate all filter systems prior to implementation � �
� diligence, regulators go through an evaluation process to of a pilot study. �
� determine if the proposed system will meet some basic crite- To perform a successful evaluation of stormwater filtretion ��
rystems, the following key elements should be mnsidered: � �
` • rystem hydraulics, :� '
: �� .-�• � � `� ,�� �� w � • media hydraulics,
�Gontmuing Education • • media rype, �
� '. � � The:Professionaf-Development;Series' is'a_�unique- • structural considerations,
� i• opporWnity to earn �continuing� edu�ation�.credit'by �� • maintenance considerations, . �
, ..reading.specially �focused,�.sponsored'artides in��CE-��. • ongoing support, and
�,New's.��lf,you��reailthe�following��artide;display-your`���� • additionalconsiderations. �
- ' ��understanding of ,stated.�learning o6jecti'ves;. and , �
.� �:follow the�simple instructions; you can`fulfill a,portion�� � SYstem hydraulics
� �ofyour continuing.education� requirements et no�cost " This is an evaluation of the simple hydraulics of how water �
'-•'to you..This�article also �is.available �online `at�www. �� flows through the rystem. The following three steps should ..
��zweigwliite.com/media/pdh/index.asp., � .� _� : . be part of [he evaluation procesr. . . �
' .�.. -,- - 1) Evaluate the hydreulic grade line (HGL) at the
Insti�etions� . � - design flow rate. Typically, a backwater calculation from the
'First, •review the learning objectives below, � then� �.' point of downstream control should be performed to ensure '
• read the.Professional�,Developmenf Series artide.�Nezt, .�. the system can wnvey the peak water quality design flow ��
.complete the qwz and� submd your,..answers -� rate. This analysis should indude head lou through porous
� '��=Professional �Development'Series:�sponsoc� �,� media (filter head loss) and pipe entrance, exit, and barrel � �
� instructionsare.p�ovided��on the'Reporting Form���which � � losses. �
� ����follows,the'quiz and is.also available �for download at " 2) Check scour velocities in tanks and pipes. Velocities ,
' - ��www.zweigwhite.com/media/pdh/index.asp. Your quiz :� should be evaluated with particular reference to where sedi- �
, � answers wilFbe graded by.the Profe'ssionabDevelopment �'� men[s are deposited orwhere high-energyflows can dislodge '
� `.Series sponsoc If, you-answer at least �80'percent'of��� or scour the filtration media. For example, the velocity at --�
`� the.questions mrrectJy,'�you,will receive;a certificate�of.�� which the inlet pipe discharges into the filter bay de[ermines .
�, � .completion.from tFie Professional �De'velopment Series ��. if there is sufficient energy dissipation to minimize smur. �
k ,�sponsor within�.90 days and `will be awz�ded 1 A.profes- �� 3) Ensure high flow bypassing. There is both online � �
-� ,�'sional development hou�.(equivalent'to.0.1 ��continuingi� ` bypassing and offline bypassing. All filters will retain depos- .
- .,. educatiomunit'.in;moststates) 'Note: ICis the,respon'sibil-�% its of sediment, organic matter, trash, and debris As flow ,.
' ity of�.the.licensee.to determine:if thismethod ofcontinuing, through a system increases, the turbulent energy will reach a .
� :edumtion'meefs his'or hergoverning�tioard(s) of registro- ; point that causes re-suspension of these materials. Therefore, ' �-
,.� requirements: � � .� �- `,,. _''� '�-�� � . ,��- ;-.. ' it is critical to ensure that high-energy Flows be kept away � �
. .. . ..� . .' A� " � .
, � � ' �- -� , . . . - � from the filter bed(s). Typically, areas with intense rainfall
� � .LeaCning�06)ectiDCS �. �' .- � wch as Type II and Type III storms require offline bypassing. � �
'.� Aher reading'tfiis artide you should,tie able to ' '�+� � '
�.1�);Understand sto�mwatecfiltration,system fiydraulic;, '�,� Media h��deaulics � .
�� "�2).Recognizemediaty�pe'and'hyd�aulia,and� '� � � This is a key factor of filtration that is poorly under-
•�� : '��3) Understand' stormwater �filt�ation system. structu�al; �� stood. The following steps should be part of the evaluation ��
� .. .. • - . . � � � . . . . . .. � .
� andmaintenarice;considerations. - . � . process: ,
. � - ' � ' � � � 1) Evaluate the specific flow rate (q) [hrough the
. .. . _ � �. �,
-� .. ��Professional,Development �Series ��'�`� media. The specific flow rate, or flux, is in uniu of flow per '� ��- ��
� �SPOnsoe " , . �'�;� 4 � � � �� unit area or gallons per minute per square foot (gpm/ft �
•� CONTEGH Stormwater�Solutioris. � Given the specific flow rate times the surface area (A) of the '
' � filter, the total Flow rate
..��� . • '��.. • . ° ' . . . .. . . � - :� (Q) can be calculated (Q = qA). A � •
�.�� '2f.PDH� ,�.�'.� �� � �,�`�SpecialAdvertisingiectlon-CONTECHStormwaterSolutions�_ .. �. ., .
.
' � � �Evaluation_of Stormwater_Eiltration.Sysfems y �p��Fp F ,` o
,, ,� good reference point is rapid sand filtration with rates of where t is the contact time, R is the outer ,�i�` � �' 3
ro ,NEWS+m
�� � , about 4 gpm/ft In general, the higher the rate, the higher radius (feet), r is the inner redius (feet), p is .d :;,_�;, �,2. '
� the head loss. Finer media are typically more efficient for [otal the porosity of the media, Q is the flow rate �. yOURS . �-
•" ���� suspended solids (TSS) removal, as well as o[her pollutants, (ft and h is the height (feet). � �
�� "r �� but have high head loss characteristics. Coarser media can One should also look at the flow paths through � .
�� . handle higher flow rates but are less efficient in TSS removal. the filter. Is there a uniform pressure distribution aaoss the
_ . Claims of high filtration rates with high pollutant removal media? A non-uniform pressure distribution resultr in differ- �
� capabilities and low head loss are highly suspect. ential loading of the filter and non-uniform contact time. �
s 2) Compare the design specific flow rate to specific 5) Consider fouling � '
�. flow rates in lab and field studies. Does the specific flow and occlusion of the
� � rate of the proposed design match the specific flow rate media. This will ultimately j �� -
�'
�-. associated with performance data? For example, does perfor- control the specific flow ,`
mance data have a specified rete of 2.0 gpm/ftz while the rete through the media. .,, ,
��� design rate is 20.0 gpm/kz? For proper filter design, this is One critical aspect is the �
. an absolute factor. Also evaluate different model sizes of the surface of the filtec In �
, � proposed BMP. Given the same driving head, the specific general, finer media can ��`' j �
" � flow rate should be the same. If the specific flow rates vary remove finer partides
with model size, this should raise questions. but have a much higher � �• ��' �`���'' � i y�
-, 3) Consider the thickness aod head loss of the media. dogging factoc Sand can t K;�; 'i +,., . .
� � Darcy's Law (q = OhKA/L) states that Flow rate (q) inaeases retain about 1.1 pounds ��r. � � � ..,µ�
. with increased head (h), wrface area (A), or driving head of dry sediment per cubic ?}"f ° v �� .f i ���x
'- (IQ and decreases with an increased bed length (L). The foot before it rapidly dogs '���' t '� �;1`�
r .� �
� thickness of the media coupled with the specific flow ra[e and fails (Lenhart and z�' �� �
_�� determines the amount of contact time the water has to Calvert, 2007), whereas a ��
�'' be treated. The longer the contact time, the more effective coarser perlite media can
� poll�tant removal will be, particularly when soluble pollut- retain about 6 pounds of Photo 1: Perlire media, normally
. antr are being removed through reactive processes. Thicker sediment per cubic foot. crystal white, is ocduded with � �
.��� media will have higher removal rates but will increase head This is a common tredeoff, fine sediments ��
loss. Thicker media will also inaease media costs and main- having the benefit of finer
tenance costr. media achieving higher
i�LT�9'T �.'+�T^����
For porous media such as perlite, TSS removal efficiency performance while exhib- 6B6�G��t �'�?�m'm009� �,
- � increases wi[h thickness because there is more o ortuni itin a much hi her do �����mG9�'�0'Qgqg,�'
PP tY 9 9 9 6WWGa4"+fPrQQQ410mq1
�� for partides to be captured as water follows a tortuous path ging factor (Photo 1). ��'QO���`'�"� Q�'�����d .
_ B!2 @ O 0 Et {t;Ga;4 � A'O'0.
though interstitial pores. For fine media such as sand, the Filtration media that is �@�ppBpqp�j��4�n �
� majority of the TSS capture is at the surface, and media thick- effective in trapping fine ��� �B�'Q���� �r�y,r�t�;c@'
6 F�.�,O E3 0 m CS;t��'.�^�.t�'F,
. ness has less influence on TSS removal. Observations and solids will accumulate a q.pQ�{a'@�.'�j_qy���;yrs'
� studies of sand filters show that the majority of fine solids thin layer of solids on its � � _
��:��m .
� �� removal occurs within the first 2 to 3 inches of bed thickness. surface (smutrdecke) that .
' In general, Darcy's law applies to flow through porous begins to ocdude the filter Photo 2: A filter screen is used to
� ; media. However, for many filVation rystems with high and reduce the flow rete. retain media. The rotal percent ��
�. conductivity and a relatively short bed, Darcy's law does not An accumulated layer as open area (17 percent) equals -
. behave with the same accuracy as in a groundwater appli- thin as 1 mm will control the saeen percent open area
-_ cation. Another confounding factor of stormwater filters is the filtration rate and (a3 percent) multiplied by the
� �� that the conductivity is a variable. As the media loads with reduce the specific Flow fine mesh percent open area (40
solids, Kwill slowly dedine. Toward the end of the filter life, K rate to very small amounts percent). .
. approaches zero asymptotically. (< 0.1 gpm/ft For exam- ,.
� 4) Calculate the contact time. Compare the calculated ple, a horizontal sand fil[er
..�. contact time with the mntact time used in lab or field stud- that builds up a smutrdecke demonstretes this. Without
; ies. For example, if the flow rate is doubled and the thickness deaning mechanisms to prevent surface dogging, this prob- �
is reduced by half, the mntact time is one fourth. This will lem becomes endemic to all filtration systems. �
� � have a direct impact on pollutant removal effectiveness. It is Following are hvo important aspects to consider regard-
_ � important to check the contact time of the design and the ing the filter surface: .�-
�� test data presen[ed. Equation 1 can be used to calculate the • Know and examine the percent open area of the outer
•,�� wntact time for a radial flow cartridge. wall of the filter vessel, which indudes the filter body and ��
� �.���� (Equation 1) any internal mesh (Photo 2). The lower the percent open
. ('di =�—clr area, the more susceptible the housing is to surface dog- .
.� �
� - - ` � ' � . , . '. �Spedal�Adver[isingSe2tion=CONiECH'StormwaterSolutions; . ' � � " .. �. . . � PDH 3 � �� ,
�,a� of� � Evaluation_of_Stormwater_�Filtration'Systeins '
y �0 / � /� F�
''W..�VV••:4 - _
�,p �NEWS:�m,� 9ing and failure. If the surface of the filter is T� v -
�.d .-!. '' exposed to light, algal growth can rapidly dog µ^.��yr� ,� a.-r�y.e-x =*^L.�.*�-, �- .-*�.• .
�� HOUPS. thefilterwrface. � �� w �� `" " - -
• Understand the capability of the technology �
. to prevent surface fouling by sediments. It is a fact .0 „ �� �
. that filters will eventually dog with sediments. The ques- � '�'""'" �" �'��,,,,�
� tion is how long does it take. Clearly, if a filter has "' < - �
no active mechanism to remove accumulated sediment -� - " - � '
� from a filter surface, its life will be less than a filter that ��� �
does. Pretreatment by settling will help, but research H 0 R I Z O N T A L F I L T E R B E D
�� indicates that the majority of the fouling is by fine sedi- �,.
mentr, organic matter, and bacterial growth, all of which � �---...��oa�,...
, are difficult to remove by pretreatment through repid � �
, settling. In fact, recent research at Monash University in � � ;, ;ff "' � f �� � �
: Melbourne, Australia, (Siriwardene, et al, 2005) indicates � �� ��"q � , . �
. that it is partides of 20 Nm or smaller that cause dogging �
, of sand filters. a� ? ' ' � ,
� �� 6) Compare a horizontal bed with vertical filters. A hori- � � � • • � ~ � — _ .� .
mntal bed filter operates by ponding water on its surface such �
�� that the driving head causes the water [o percolate through — . .
� the media (Figure 1). One characteristic of horizontal bed G R A V I T Y S Y S T E M
. � filters is that all collected sediments will impact the surface '
'� of the filter, thus reducing longevity, whereas vertical filters . .
.� allow much of the sediment to be deposited on the floor, ; �-
, away from the filter. Horizontal bed filters have the benefit of '� ���� �� ��
a mnstant pressure head (equivalent to the depth of water) ">� � t ,� �... �� ' � _
�� � over the entire filter surface. Vertical filters have a reduced ''–
driving head (equivalent to half of the depth of water, see � � � .
•�. Figure 2) because of a triangular pressure distribution, unless en -- -� .- _ — � �
� they are operating with bo[h a pressure on the outer surface I �'' "'_' �'-" ` �.
- and a suction on the inner wrface to create a uniform pres- 1 '�� �; ;.,, ,,. ,..'{ '— � -
� sure distribution auoss the filter media bed (Figure 3). - " " �
. --n,.
Mediatype SIPHON SYSTEM
During the past few years, a number of different filter �
. media have been used for stormwater filtration. Media such as
� sand, peat, and compost have been used successfully. Recent Figure 1(top} The hydraulic profile of a horizontal bed filtec The � -
� uses of perli[e, zeolite, carbon, and other "exotic" media have total driving head is the depth of water.
� expanded the choices for targeting specific pollutants. Figure 2(middle): A radial Flow, gravity-driven filter cartridge. ° '
�" Consider the physical properties of the media used for The mean pressure head is 1/2 of the water depth. �
� sediment removal. Most media remove solids by mechani- Figure 3(bottom): A radial flow, siphon-driven filter cartridge �
.' � cal processes. The gradation of the media, irregularity of Where a suction head on the interior and driving head on the �
shape, porosity, and wrface roughness charaderistics all ex[erior sums to a uniform pressure head equal to Ihe depth of
;.. � influence TSS removal characteristics. Finer media are more the water.
effective at removing TSS than coarse media but ueate
higher head loss and have higher dogging factors. This trade
; off is a fundamental consideration. Media gradation is critical exchange, precipitation, chelation, and adsorption. When �
� [o performance, the finer the media the higher the perfor- daims are made for soluble pollutantr, there needs to be a � �
mance but the slower the flow rate with the same amount documented process by which these reactions take place.
of driving head. In addition, these reactions have limits in terms of sorption ��
Unders[and the chemical properties and mechanisms capacity and reaction kinetia. For example, media may
- � used to remove stormwater pollutants. Many types of have a sorption capacity of "X" mg/kg of inedia. Given the .
.� pollutants such as nutrientr, metals, and oil and grease are in mass of the media, the total mass of pollutant that can be �
soluble or free form and can be removed through chemical removed can be calculated and then compared with what is
and/or biological processes. Common processes are cation generated from the site. Reaction kinetics also cause a slow- ��
. 4 PDH . - � . � � V � � . ' " � :�Spedal Advertising Section — CONTECH3tormwater Solutions ' � � , . , , � , � . -
� ° ' �Evaluafion_of�S.tormwater_Eiltration_S.y.stems �
4 i. /�Q O.:
� ing of pollutant removal rates as media saturation increases times what appeaa simple on the plans can ��,,�i','f �' 3
:o•.,NEWS!'nr
.. and/or pollutant concentration decreases. be difficult during construction. Consider �. d
•. The reviewer should also consider if the media can add construction loads, back filling, etc Dces the �� f/OUR`+. �
constituentr to runoff. For example, organic media can contractor have a track record of constructing
�. elevate ortho-phosphorus, which leaches from the media. In and installing similar facilities? �
' some watersheds this is not a desirable media and an alter- Consider materials of construction. Stormwater runoff
� � nate should be selected. Other media can raise or lower pH. can be very corrosive. The presence of numerous nuts, boltr, � '
. Evaluate whether the �, differential metals contact, pivot pointr and hinges, and
�' properties of the media �fy���:.� galvanized parts are all potential candidates for corrosion
will change over [ime. �'�e�" j.''� and ultimate failure. .
Stormwater is a complex � y � ��� '� �
' mixture of sediments, �'Z�, �y���'�x Maintenanceconsiderations
��. nutrients, organic matter, -���;q ��t, ,t�.��-' All stormwater BMP's will require maintenance at some ..
� �. bacteria, and other pollut- �+` �"' � time or time interval. Lon term maintenance costs and
���,F�,���rt�t"t'j;� a S 9-
�� ants. Many times, media �'&' x� maintainability are very important considerations.
may perform well in the �c,�sfi^.,.�a'.��i„,, t,�'' Evaluate availability of maintenance contracting. It is
short-term, but in the long- � 1 '�'��� [he nature of filters to ocdude with captured TSS, hence . �
'�. termmaybecompromised maintenance is required. Acceptance of all rystems should '
� _ by biological demmposi- Photo 3: A pulp-based absor- be coupled with a maintenance contract by a professional -�
� . tion, bacterial slimes, or bent, although effective for maintenance provider. Does the manufacturer stand behind .
.' simple decomposition soaking up oil spilis, will rapidly the product and offer to provide maintenance?
��� by continuous saturation decompose when used as a Maintenance frequency varies from site to site. �
�� in water (Photo 3). For stormwater filtration media. Typically, if maintenance is needed more than once a year, .
�. � example, does the media the project will cost more over its lifetime than if the facil-
- demmpose or dissolve ity had been upsized to extend the maintenance cyda ��
., when exposed to stormwater? Cellulose-based media such Conversely, designing for maintenance intervals greater than
�.- as treated pulp, com cobs, or rice hulls will decompose when one year may result in higher initial costr tha[ may never be �
exposed to these elementr. Does the media swell or shrink recovered by lower lifecyde maintenance costs.
• on wetting and drying cydes? Maintenance costs are critical. If a person states a cost, �
Check to see if the media is free draining or submerged. ask if they will sign a contract to do that Frequently, costs
_ . Permanently submerged media can lead to anoxic condi- are understated because they do not indude mobilization, �
'� - tions, causing anaerobic decomposition and release of many heavy equipment rental, and mileage costs. Consult with a .
.� � of the trapped pollutantr. local maintenance provider when in doubt -
Check media availability and cost Many times, media Facility access will always be needed. Even manholes are ��
' are available in small production quantities or it is diffi- equipped for access. Stormwa[er filtration systems will need
.,- cult to find media that meet all the specifications. Systems to be accessed for deaning media, washing sidewalls, repairs, �
. can also facilitate multiple-media options. Multiple-media media installation, and facility inspection. Review plans for �
� rystems have the versatility to fine tune media to site-specific height restriction, ventilation, and extraction ports. Make sure .
, pollutants, as well as adapt to future improvements in media the facility is also accessible by the required equipment .
� `.�� effectiveness. Working inside can be problematic Evaluate the ',
complexity of the internal components and whether they
Structural considerations pose trip hazards or make access by suction hoses difficult.
��� � Structural integrity is critical. Many stormwater filtretion Is the operator working in standing water? If you have a set
.. � - rystems are designed to handle treffic loads, therefore, it is of plans or photos of an existing unit, seek the opinion of �-
� important to evaluate the structure for integrity and design people who perform the maintenance rather than rely upon �� �
.� life. Make sure the structures are reviewed by structural engi- the generalities of the manufacturer. �
.-� neers to ensure expected traffic loads can be handled. Check the weight of the media. How is the media being -
�_ Water tightness is required by many agencies. Evaluate extrected? How much would a media "vessel' that is full of
- � vertical and horizon[al join[s for design integrity. Vertical sediment and has a high water content weigh? Is i[ practi- �
joints are more difficult to control because of differential cal that it be removed or liked? As a rule of thumb, use a �
. settlement Some agencies require a water tightness test minimum of 701bs/h for a lightweight media such as perlite .
� prior to acceptance. All join[s below the permanent pool (weighs about 5 Ibs/ft when fresh and dry). Some media �..
� elevation need to be watertight. such as sand can result in cartridges weighing in excess of �
� Buoyancy measures need to be considered. In areas of high 300 pounds. -
groundwater, take measures to prevent rystem floatation. In addition, once media bemmes dogged with sediments,
•��=� '� ��( Constructability co�siderations are important. Many it can become firmly lodged in the filter body. Typically, the �.
I
, �
� �� . , :• � � � : � � � . � Special Advertising Section = CONTECH��Stormwater Solutiond - � 'PDH .-5
k '. . � , . . . . . . .. . . . ' . .
`, ` �p�oF� Evaluation_of_Storrimwater.Eiltration;S.y.stems_ -
, y F�
. ; �p .�
u"'. ' �.•3 : spent media needs to be sucked, shaken, or ,. �� - .� . � . � � .
�o NEW$�n, , ,
� �d , � ! �,2.; dug out of the filter body, as it rarely falls from � �� Refei'ences ' `� , � _ � .- �., . �-
• HOUPS. the fil[er body under its own weight. ' ' '� ' � . .
�"'• SiriwaFdene N R A'.:Deletic, and T.D. Fletcher, 2006,
Standing water is costly and expensive to �. ��preliminary studies���of the�development.�of a�dog-
remove. What is the volume of water if the rystem ., , 9ing .predictiom�method� for storrriwater �infiltration � . '
� is drained down and what is the volume of water if the filters , .�Proc ,' 4th Intemational ��Conference �on
are fouled? Does the rystem cause standing water in the Water:5ensitive��U�ban Design,: Melbourne, Australia, -�
� upstream pipe network? ' April, V121�1-V1�.218. � � _ �� �. .
�
� . Product sup(�ort • � Cenhart, �,�ames �H., ,P,E., and ���Paula - :�P. "Calvert,.•2007, �. ' ,
Does the manufacturer warranty the product? .�� °Mass loading �and �mass� load� design of �stormwater -�
,. Typically there is a one year warranty on the structure and �� filtration. systems,° EnJironmental Water Resou�ces �
, . components. � �InstiWte,Proceedings, Apri1��2007. � � �
� Does the manufacturer provide support to the owner? �'� � ' .
' Filtration rystems are more effective than simple settling
or vortexing devices and require media replacement. It is Properties that cannot be evaluated in the laboratory �
� important tha[ the manufacturer supply on-going long-term indude fouling charac[eristics, maintainability, and pollutant- �
���� support to ensure proper operation. removal characteristics with complex hydrology and water
�� chemistry. Laboratory data provides rapid data collection .. �
�- Other considerations and good insight to filter performance but should not be ��. �
- Check references and speak with other agencies where used as a sole method to judge performance. : -
.� the facilities have been installed, then use the scope of the
information to establish aedibility. Remember, because of Programs for filtration system verification .�
� the variable nature of stormwater runoff, all types of facili- New Jersey and Washington have both implemented .
ties — induding ponds, swales, filters, settling devices, and statewide programs to evaluate filtration technologies (and -
�, others — will have examples of poor performance, but other technologies as well) for the purpose of ensuring -
� � overall the assessment should be positive. Checking manu- that the technology can meet the water quality objectives. .
� � facturers' daims is critical. A large number of reports do not The programs, known as the TARP and TAPE processes, are ,
•. necessarily imply a rystem is well tested or verified. well documented and available on the Internet. The TARP '
Integrate all of the considerations above into an over- process has been largely administrated by the New Jersey '
' all assessment of how a proposed rystem matches perfor- Corporation for Advanced Technology (NJCA�. �
-.'� mance data from prototypes. This is a critical review. If the In short, these processes outline monitoring protocols, , �
design flow rates, media thickness, etc. do not match the Veatment goals, reporting standards, and other criteria that
studies, upsizing the facility to the test values is warranted. all new BMP's must be subjec[ed to for final verification and
, Make sure the data presented are consistent with approvals. -
pollutant concentrations and characteristics typically �
� associated with stormwater runoff. Common daims that COnClUSion
illustrate inconsistencies indude the following: These factors are meant to serve as guidelines for the
- • performing a study with sand or grit and equating [he preliminary review of new products. If this review meetr the �'
� percent removal ro the removal of silts and days in the satisfaction of the reviewer(s), the next consideration should
, . field; be pilot facilities that lead to system acceptance. If a submit- ,
' • performing a study with very high concentrations of oil in tal does not appear to meet the criteria listed above, the .�
� water to assess oil and grease (OS�G) removal and then design engineer or reviewer needs to seek darification or _ ,
. using these da[a to daim high percentage removals on redesign prior to setting up a pilot program. ■ �
.-: stormwater runoff, which has much lower concentrations
�' of OS�G (Does the data presented reflect the reality of �,
what is typically found in the field?); and '
• performing studies conducted at a fraction of the design � �� � �'
�� flow rate Qf a filter is designed to a high specific flow rate, �� �
. it should be tested a[ that rate). . . . �
� Evaluate lab data versus field data. Lab data are collected �
� under controlled conditions and can provide a lot of insight � . �
.'_ on filter behavioc Studies successfully executed at the labo- � . � � �
ratory level include removal of TSS relative to different flow �
rates and hydraulic behavior.
- �. . . .. .. .. .. - : ., . . .� . � � .
: , � ., .. . .. . . . , , s �� � . � . . .
^ . � � 6 PDH� � � � ; � . � � �� .: Special Advertising Section_— COMECH Stormwater SoluNons ' - , ,. , � � �. �
,. �
� ` Pr.ofessionalDevelopment_Series Quiz �
� R uiZlnstrul'tionS 6. Auniformpressurepmfileacrossamediabed: �Wyi �:/G i��
a) Increases 9ow velo<iry [hrough the flter because of .� ip i��JE�/�/S;' T
• On the Professional Development Series Reporting Porm below, �ncreased presmre ditferenciais. ��d �
•� cirde the correct answer for each of the following questions. b) enmres a mnstant and un�fo�m fiow rare and veiociry yp�p
that is independen[ of solids loading.
c) Contributes to equal loading of the filter media, uniform
. 1. Darcy's Law provides the general relationship between the media flow vebcities, and contact time to maximize the perforv �
. . mnduc[ivity, bed [hickness, cross sectional flow area, and driving mance and life of the fitec �
. head. What facror of stormwater flltration impac[s the accuracy of d) Reduces unitorm presmre profiles when a flter dogs wiffi sediment
� : this equation? and has little impact on actual pertormance.
� .. a) Conductiviry is constan[, but edge effects have a signifcant influence
� on flow rate. 7. Wthout a surtace deaning me<hanism, a filterwill:
. � b) Conductivity will vary with solids loading and is not constant. a) Build up sediments on the surface until they slough off by [heir own � �
c) The mnductivity of sand is too variable and unpredictable. mass. �-
� d) Once a filter builds a surface layer, it mntrols the flow rate and not b) 6e subject to rapid surfa<e dogging by fne and gross polWtants such '
�. Ihe media, therefore Darq's law does not apply, as leaves, oil and grease, and silts. '
c) Need to be designed m operate at a high specifc flow rate because �
' 2. A filter has a specific flow rare of 1.5 gpm/ft� of mrface area. What is the surface ocdusion controls [he flow, no[ the media.
�' the approximate design flow rate ol a 20-inch-tall, 18-inch-diameter d) Surtace dogging is not an issue if you prescreen gross pollutanLS.
�� filrer cartridge; and given a 4in<h-diameter center drainage hbe
�, ' and 30 percent porosity, what is the appronimate contact time? 8. In a one-year-long field test, filter effluent TSS mncentration was '
�� a) 12-gpm/cartridge with a 14-second mntact time mnsistently at or below 20 percent of the influent concen[ration. '
... . b) 15-gpm/cartridye wi[h a 14-semnd mntact time Before approving the rechnology at an 80-percent TSS removal rate, � �
.� c) 15-gpm/cartridge with a 32-semnd mntact time one should: .
�. d) 12-gpm/carhidge with a 32-second contact time a) Establish loading capacity and maintenance frequency requirements.
b) Ensure tha[ the flter was operating at the design treatment flow rate .
� 3. A fllter loaded with 12 inches of sand and a surtace area of 2 square for a good portion of time prior m approval. �
feet operares at 20 gpm/k� (2S2 I/s). Given an influent TSS concem <) Ensure [he data are in accordance with a pre-established process and
_' � Iration of 80 mg/I, and 75-percent T55 removal rate, appmnimately protocd [o ensure [he integriry of the data and then approve it.
� how long can the filter operate before i[ is plugged and requires d) All of the above .
maintenance?
� a) One year 9. N�CAT (www.NJCALOrg) publishes the TIER II pmtocol for TARP on Rs '
�� � 6) 7 days website. Four of [he event colleRion criteria for a qualified event are:
� - <) D hours a) 0.1 inches minimum precipitation, 6 hours interevent period, 50 �
. , d) 100 minutes percent smrm mverage, and 12 srorm sampled minimum.
b) 0.1 inches minimum precipitatioq 24 hours interevent period, 70 .
�.' 4. Which pollutant has more impact on the operational hydraulic life of percent storm coverage, and 10 storm sampled minimum
- a filter? �) 0.1 inches minimum precipitation, 24 hours interevent period, 50
� � a) Larger sandy partides percen[ storm mverage, and 10 smrm sampled minimum.
b) Small silt, day, and organic partides on Ihe order of 20 pm or less �) 0.7 inches minimum precipitatio�, 6 hours interevent period, 70
, c) Leaves and organic matter percent storm coverage, and 10 storm sampled minimum �
• : d) Soluble metals ..
10. In addition to filter pertormance in the Fleld, an evaluator should
5. Metlia made from biotlegradable marerials such as paper pulp: Consider for final approval:
a) WII degrade polWtants and reduce maintenance costs. a) Maintenance cos[s and frequency, s[mctural integrity product
� , b) Has the ability to sequester oil and grease (rom srormwater runoff on support, a feld observation of the technology, and whether the
a long-term basis. design is mnsistent with the warer quality goals for sizing.
- c) Can biologicaly degrade and release captured pollutants. b) Laboratory studies, brochures, and advertisements.
.. d) Is best because it is more envimnmentally friendly. �) Faciliry flrst mst.
d) Whetherthefaciliryrequiresmnfinedspaceentry.
.................................................................................................................................................................
� � Protexsional Development Serics Sponsor. �� ��
. 9025 Centre Poin[e Dr., Suite 400, West Chester, OH 45069 �i•b � _
., Phone: 513-645-7330 • Fax 513-645J993 • Email: morylj@contech-cpi.com • Web: w�wv.contech-cpi.com � �^T�� .
�---/SOLUTIpWS_ .
� CE News' Professional Devclupment Scries Reporting Fonn „
Artide Title: Evaluation of Stormwa[er Filtration Systems Publica[ion Date: May 2007
� Sponsor. CONTECH Stormwater Solutions Valid for credi[ until: May 2008
� Instruclions: Select one answer for each quiz question and deady cirde the appropriate lettec Provide all of the requested contact informa-
. tion. Fax this Reporting Porm ro 513-645-7993. (YOU do not need to send the Quiz; only this Reporting Form is necessary to be submitted.)
, 1) a b c d 6) a b c d '
. 2) a b c d 7) a b c d .
- 3) a b c d 8) a b c U �
9) a b c d 9) a b c d
. 5) a b c d 10) a b c d .
. . . Required contact information � "
. Las[ Name� First Name� Middle Initiah �
- Title: Firm Name:
Address:
` C�� State� Zip� ,
. Telephone� Fax� E-maih
• .„ Certificatiun of ethical completion: I certify that I read the artide, understood the learning objectives, and completed the quiz questions �
. to the best of my ability. Additionally, the mntact inFormation provided above is tme and accurate.
- .' ..� Siqnature: Date: . � �
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Designed to meet stringent regulacory requiremenu,the StormFilter system argea a �' t����
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Variable sizes, macerial economy,faster installacion,and durabiliry combine to make our t �
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Watcr Quality Management Plan (WQMP)
FRONT STREE'C PLAZA
� 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
•
•
DOC # 2012-0243988
' RECORDING REQUESTED BY: 05/29/2012 08:58ii Fee:60.00
FRONT STREET PLAZA, LLC Page i o£ 36
� Reeorded in Official Records
� Couniy of Riverside
• (Property Owner NflfllQ� Larry W. Ward
. Rssessor, County Clerk 8 Recorder
AND WHEN RECORDED MAIL TO: I IIIIII IIIIIIIIIIII IIIII IIII IIIIIIIIIII IIIIIIIIIIIIIIII
41911 Fifth St. Temecula CA 92590
. (Property Owner's Mailing Address) s R U PAGE SIZE DA MISC LONG RFD COPY
I � ��
M A L 465 426 PCOR NCOR SMF NCHG �`
T: CTY UNI �O�
\�
�
605
SPACE ABOVE THIS LINE FOR RECORDER'S USE
RECORDING OF A
� WATER QUALITY MANAGEMENT PLAN
OPERATION AND MAINTENANCE AGREEMENT
FOR
FRONT STREET PLAZA
(Name of Projec�
28693 Old Town Front Steet, Temecula CA 92590
(A�ddress or Tract Map/Lot No.)
�
— Page t — _
Water Qualitv Manaaement Plan
Operation and Maintenance Aareement
• Property Owner Name: FRONT STREET PLAZA,LLC
Property Owner Mailing Address: 41911 Fifth Street
Temecula, CA92590
Project Address or Location: z8693 Old Town Front Street, Temecula CA 92590
ProjecYs Assessor Parcel Number: 9zZ-0460-010 & 922-046-011
This Operation and Maintenance Agreement (Agreement) is made in The City of
Temecula (City), a municipa� agency, located in the Countv of Riverside. State of
California, by (insert property owner) FROfVT STREET PLAZA, LLC -
(Owner), this (insert day) _ 1 of (insert month and year) _ Mav 2012 _,
WHEREAS, the Owner owns real property (Property) as described in Exhibit "A" and
depicted in Exhibit "B", each of which exhibit is attached hereto and incorporated by
reference, and has proposed that the Proper[y be developed in accordance with
governmentai approvals issued by the City and other agencies having jurisdiction over
the Property;
• WHEREAS, at the time of initial approval of the development proiect (Prolect) known as
(insert name of project) _ FRONT STREET PLAZA
within the Property, the City requiretl tne Nroject to generate a Water Quality
Management Plan (WQMP). The WQMP describes how the Project proposes to remove
pollutants and minimize any adverse impacts from the discharge of storm water and
non-storm water runoff generated as a result of the Project, and includes structural and
non-structural treatment devices, also known as "Best Management Practices" (BMPs),
that will be constructed, or installed, or implemented for this purpose. The precise
location(s) of these BMPs are depicted in the WQMP, on file with the City;
WHEREAS, the Owner signed and certified the WQMP and accepted the requirement to
routinely inspect, clean, maintain, repair, reconstruct, and replace the BMPs associated
with the Project in order to retain their original intent and effectiveness;
WHEREAS, this Agreement is transferable onto subsequent owners, heirs, executors,
administrators, representatives, and assigns (collectively "Successors") of this Property,
Project, and all associated BMPs;
WHEREAS, the Owner and Successors are aware that such operation and maintenance
requirements are in accordance with, and enforceable under, the City's Municipal Code
and State and Federal environmental Iaws regulating the discharge of pollutants in storm
water and non-stormwater runoff, and may also require compliance with Local, State,
and Federal laws and regulations pertaining to confined space entry and waste disposal
• methods in effect at the time such maintenance occurs;
--------------------� Page 2
NOW THEREFORE, the Owner and Successors shall be subject to the following
conditions:
. 1. This Agreement sha�l be recorded in the Office of the Recorder of Riverside
County, California, at the expense of the Owner and shall constitute notice to the
Owner and all Successors of the title to said Property of the obligations required
by this Agreement. This Agreement shall also be accompanied by a copy of an
`Operation and Maintenance Manual', included in Exhibit "C", providing detailed
instructions on how and when each treatment BMP proposed for construction, or
installation, or implementation must be inspected, cleaned, maintained, repaired,
reconstructed, and replaced, if necessary, (collectively "Maintained") in order to
retain their original intent and effectiveness.
2. Owner shall, at their sole cost, expense, and liability, routinely maintain all BMPs
in a manner assuring peak performance at all times without request or demand
from the City or other agency. All reasonable precautions shall be exercised in
the removal 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 of the recording of this Agreement. As may be requested from time to
time by the City, the Owner shall provide the City with documentation identifying
the inspections, maintenance activities, material(s) and quantity(ies) removed,
and disposal destinations.
3. Owner hereby provides the City complete access at any time and of any duration
during business hours to the BMPs, their immediate vicinity, and all legally
accessible areas draining to them upon reasonable notice, or in case of
emergency as determined by the City without advance notice, for the purpose of
• inspecting the BMPs and/or sampling runoff into and/or from the BMPs. The City
shall make every effort to minimize interference with the Owner's use of the
Property during these inspections and sampiing activities.
4. In the event the Owner fails to accomplish the necessary operation and
maintenance obligations required by this Agreement, the Owner hereby
authorizes the City to perform any maintenance necessary to restore the BMPs
to their original intent and effectiveness. Owner shall reimburse all expenses
associated with the City's maintenance activities to the City, including
administrative costs, attorney fees, and interest thereon at the maximum rate
authorized by the Civil Code. The City may also opt to use the proceeds from
any securities posted for the project, or p�ace a lien on the Property in such
amount as will fully reimburse the City, to pay for such maintenance in order to
guarantee the continued performance of the BMPs.
5. Owner shall notify any successor to title of all or part of the Property about the
existence of this Agreement and provide such notice and a copy of this
Agreement prior to such Successor obtaining an interest in ail or part of the
Property.
•
------------------------ --- Page 3
IN WITNESS THEREOF, the Owner hereto affixes their signature as of the date tirst
written above.
•
OWNER 1: OWNER 2 flf more than one ownerl:
Bill Dalton
ame Name
�//F /2—
Siqnature Signature
FRONT STREET PLAZA, LLC Managing Partner
Title Title
A notary acknowledgement is required for recordation (attach appropriate acknowledgement).
•
•
-------- - Page 4
ca�a�o�a�aa �aa�-pua�u�osE ac�cr�o�nr���GnnEavg
� �
State of California �
cou�ty or �verstde
On 5�6'l2- before me, K,. CYOwEI.L, NOtAYU Publi.G
Date Hera Insert Name antl T�t of tbe Oflicer
personally appeared �I � � � ��
- Name(s) of Signeqs) .
who proved to me on the basis of satisfactory evidence to
be the person(s) whose name( .la sre subscribed to the
w hin instrument and ackno�dged to me that
K. CNOwEIL ey-executed the s�ne i Fkerftheir authorized
Commission,� 1865975 capacity(ies), and that by�#�erffheif'signature(s) on the
Z-e Notary Public - Calitornia i instrument the person(s), or the entity upon behalf of
= Riverside County = which the person(s) acted, executed the instrument.
M Comm. Expires Oct 18. 2013
I certify under PENALTY OF PERJURY under the laws
of the State of California that the foregoing paragraph is
true and correct.
WITNES my h d and official seal.
• Signature ' L/u�'V�
Place Notary Seal Above SiBnaW of Notary Public
OPTIONAL
Though the in/ormation below is not required by law, it may prove valuable to persons relying on the document
and could prevent lraudulent removal and reattachmenf ol this /orm to another document.
Description of Attached Document
Title or Type of Document:
Document Date: ber of Pages:
Signer(s) Other Than Named Above:
Capacity(ies) Claimed by Signer(s)
Signer's Name: Signer's Name:
❑ Individual ❑ Individual
❑ Corporate Officer—Titl ❑ Corporate Officer—Title(s):
❑ Partner-0 Limited �] General ❑ Partner-0 Limited ❑ General
❑ Attorney in Fact � • ❑ Attorney in Fact • -
❑ Trustee roP oi m�mo nere � Trustee Top of �humb here
❑ Guardian Conservaror ❑ Guardian or Conservator
❑ Other: ❑ Other:
Signer Is Representing: Signer Is Representing:
� � -- �� � - - - -_ -� -
�200] NaVOnal Notary Assaclatlm • 8350 De Sob Fnx., P.0.6ox 2402 • Chatxwrth, CA 9131&2402 • www.NatlorielNOlary.org� Item N690] ReoNer: Ca11 iolFFree 1-BOPB]&882]
EXHIBIT A
• (Lepa! Descripfion)
REAL PROPERTY IN THE CITY OF TEMECULA, COUNTY OF RIVERSIDE, STATE OF CALIFORNIA,
DESCRIBED AS FOLLOWS:
LOTS 12 THROUGH 16, INCLUSfVE, IN BLOCK 29 OF THE TOWN OF TEMECULA, IN THE CITY
OF TEMECULA, COUNTY OF RIVERSIDE, STATE OF CALIFORNIA, AS PER MAP RECORDED IN
BOOK 15 PAGE 726 OF MAPS, IN THE OFFICE OF THE COUNTY RECORDER OF SAN DIEGO
COUNTY.
TOGETHER WITH THAT PORTION OF THE SOUTHWESTERLY 10.00 FEET OF FRONT
STREETADJACENT TO SAID LOT 12 ON THE NORTHEAST WHICH WOULD PASS BY OPERATION
OF LAW WITH A CONVEYANCE OF SAID LOT; AS VACATED BY RESOLUTION OF THE BOARD
OFSUPERVISORS OF RIVERSIDE COUNTY, A CERTIFIED COPY OF WHICH WAS RECORDED
APRIL 23, 1975 AS INSTRUMENT NO. 46491, OF OFFICIAL RECORDS OF RIVERSIDE COUNTY,
CAL I FORN I A.
ALSO TOGETHER WITH THAT PORTION OF THE NORTHWESTERLY HALF OF THAT CERTAIN
UNNAMED ALLEY ADJACENT TO SAID LOTS ON THE SOUTHEAST, WHICH WOULD PASS BY
OPERATION OF LAW WITH A CONVEYANCE OF SAID LOTS; AS VACATED BY RESOLUTION OF
THE BOARD OF SUPERVISORS OF RIVERSIDE COUNTY, A CERTIFIED COPY OF WHICH WAS
RECORDED APRIL 23, 1979 AS INSTRUMENT NO. 8D863, AND BY RESOLUTION RECORDED
FEBRUARY 02, 2009 AS INSTRUMENT N0. 2009-0049961, BOTH OF OFFICIAL RECORDS OF
RIVERSIDE COUNTY, CALiFORNfA.
•
•
Page 5
EXHIBIT B - MAP
�
I OLD TOWN FRONT� STREET
WAlER ESMNT. -VACAIED POR:��C � . - .
� o PUeuC un� ESMnt. SCACE: i"=40'
REC. 9/10/2000 n REC.�4�23�1975
DOC.g 365777 ppC.p 4b49i
� (� ��_ N4530'06''W o 140.Oa' 1
� L_J — — —� — L2' \. .
W � 0 9� ,
m
� M _ _� ..� _ - ��..
� I � a
�,� N
I 30 — — �
��� '� � 10' —VACAlEO POR. tt
PARCEL A ��� ausucune Es�yr.
��. REC. 4/23/t979
c� W OOCg 80863
9� ,sr� W
� a . — . — -- — � � � ' . .
• � (- ,�°�i . �� ��' bo.. . . .
� Z 9� — — ��� — � �
I a
z
I �B
� — PRQPOSEO PARCEL
` ��.. � 80UNDARY
� '� - N4530'31 "W 150.06' �'
I WiFt. U17L EASEMENT .50, CAL.E�ISON ESIdNT �
REGORDED 6/SJ20f0 REC. 9/23/2009
. WST. N0. 2050-0273166 DOC.� 2Q09-049396t
plaG�C��[� 7, �C,� 3�(�� .
G°�G�" ��3@! ����4 . uNE eE _ �eNCni
Lt� � N44'28'12'�E . 10.00'
L2 N4530'06'W 10.00'
• Page 6
EXHIBIT C .
. (Oueration and Maintenance Manua!)
•
•
--.___..----------------------- Page 7 -------------------- ----
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�
� Ma,intenance Guidelines in addition to these iwo activities, it is important to check
� The primary purpose cf the Stormwater Management tne condition of the StormFilter unit after major storms fcr
StormFilter"' is Yo flter out and prevent pollutants from enteriny P^tential damage caused by high flows and for high sediment
our waterways. Like any effective f Itration system, periedically accumulation that may be caused by localized erosion in the
• these poliutants must be removeu to restcre the StormFilter to its drainaye area. ft may be necessary to adjust the inspectioN
full ef(iciency and effediveness . maintenance schedule depending on the actual operating
conditions encountered by the system. In general, inspedion
Maintenance requirements and freGuency are dependent on the activities can be mnducted ai any time, and maintenance should
pollutant load characteristics of each site. ivlaintenance activ�iies occur, if warraMed, in late summer to early fall when flows into
may be required in the event of a chemical spill or due to the system are not likely to be present.
' excessive sediinent loading from site erosion or extreme storms. It
is a aood pradice to inspect the system aker major storm events. �dlf1t211dI1C2 ff@C�Ue11Cy
The primary factor controlling timing of maintenance of the
Maintenance Procedures StormFilter is sediment loading.
A�though ther? are likely many effective maintenance
options, we believe the foliowing procedure is e`ficient and A prcperly fundioning system will remove solids from water by
can be implemented using common equipment and er.is!ing trapping particulates in the porous structure of the filter media
maintenance protocols. A two step prowdure is recommended inside the cartridges. The flow through the system will naturally
�as follows: decrease as mcre and more particulates are trapped. Eventuzlly
the flow through ihe cartridges will be low enough to require
1. Inspection replacement. it may be possibie to eMend the usable span of the
Inspection o'the vault lnterior to determrne the need for cartridges by remcving sediment from upstream trapping devices
maintenance. on a routine as-needed basis in order to prevent materiai from
2. Maintenance being re-suspended and discharged to ine Stormfilter tr?atment
sysiem.
Cartridge replacement
Sediment removal �ite conditions greatly influence maintenance requirements.
StormFilter units bcated in areas with erosion or active
Inspeetion and Maintenanee Timing construclion may need to be inspeded and maintained more
At least one scheduled inspection should take place per year with oft?n than those N�ith fully stabi�ized surface conditions.
• maintenance following as warranted. The maintenance frequenty may be adjusted as additional
First, an insoection should be done before the winter season, monitoring information'becomes available during the inspection
During tne inspedion the need for maintenance shouid be P�ogram. Areas that develcp known problems should be
determined and, if disposal during mainienance will be required, �nspected more frequertly than areas that demonstrate no �
'�samples of the accumulated sediments and m=dia should be p�oblems, particularly after major storms. Ultimately, inspection
�'olitained. and maintenance activities should be scheduled based on the
' � histeric records and charaderisiics of an individua� S±ormFiker
°`Second, if warranted, a maintenance (replaceinen, of the filter system or site. It is recommended tYiat the site owner develep
.cartridges and removal of aaumulated sediments) should be a da±abase to properly mznage StormFilter inspecTion and
oerformed during periods of dry weather. maintenance orograms.
��� Prior to the development cf the maintenance database, thz
� fcllowing mair.tenance frequencies should be follewed:
Inspection
.,��, � One time per year
After major storms
; �1
` �F ` Maintenance
.��. f `?�� As needed, based on results of inspection (The averagz
' y �„ ��� ' .maintenance lifetyde is approximately 1-3 years)
�
<'u� � Per Regulatory requirement
� r t -:: . ,.;� �, d
In the event of a chemiczl spill
�� f �' I FreGuencies should be updated as required. The recommended
' 4 � `�¢ y . .. � initial frequenq� for inspection is one time per year. StormFilter
� '";s 'a .+�= ,� -�' units should be inspected after major storms:
ir i"t � - ��.2)� M,' .
� K �r �... 1
...�. R .��•`.� ...r` ' f$ �.� � � ���•i.
.. � Sediment removai and rrtridge replacement cn an as needed 7. R=move safety equipment.
basis is recommended unless si[e conditions warrani. S. li appropriate, make noies about the local drainaye area
Once an understanding of site characteristics has ceen re�ative to ongoing construction, erosion problems, or hlgh
established, maintenance may not be needed for one to three loading of other materials to the system.
• years, but inspection is warranted and recommended annualiy. 9. Discuss conditions that su99est maintenance and make
decision as to weather or not maintenance is needed.
Inspection Procedures Maintenance Decision iree
The primary goal of an inspectien is to assess tne condition of The need for maintenanw is typicaliy based en results of the
the cartridges relative to ±he level of visual sediment loading as inspxtion. The following Mainienance Decision Tree should be used as
it relates to decreased treatment capaciTy. It may 6= desirable to - a general guide. (Other faUors, such as Regofatory Requirements, may
condud this inspedion durinq a storm to observe the relative need to be consideredj
flow through the fiiter cartridaes. If the submerged cartridges
are severely plugged, then typically larye amounts of sediments , � � �l� �i � F �`��
wilf be presen[ and very little flow wil� bz dixharged from the {'� � � u �� ".�� °
Iq i . , i� .. FW � s'
drainage pipes. if this is the case, then maintenance is warranted F� - ��� I I I �ii � I � I� �� �� }i� ;��.
and the cartridges need to be replaced. I li �� I �
Warning: In the case of a spill, the worker shouid abort
inspection adivitizs untii the proper guidance is obtained.
Notify the local hazard mntrol agency and CONTECH
Construction Products immediately
� To conduct an inspection:
important: Inspecticn sFouid:be performerJ 6y a p2rson who �:
is�familiar witn tne operation and coiifiguration of the .
StormFi�ter t�eatment unit.
i. If applicable, set up safeTy equipmeni to protect ar,d�notify . � �� � ' �
surrounding vehide and pedestrian traffic `
• 2. Visualiy Inspect the ex:emal cendition of the unit and take 1, Sediment loadinq on the vault floor.
notes conceming defect�problems. a. If >4" of accumulated sediment, maintenance is
'�t � � ,i, I i;y� � re�uired.
d IP _
����� �� t � 2. Sedimentloading on top of the caRridge.
�-: -
z'p; "' �� 1 a. If > 1/4" ef accumulatlon, maintenance is required.
��,� � � ;��. ,r' - 3. Submerged cartridges.
� �- "� y �...,.� r �� ; a. if >4" of static water in the cartridge bay for more
� ,�'"� " r''- ;�� ' that 24 hours after end of rain event, maintenance is
� .. '`� � z « : , ��.
+� � required.
�4f���"!', �� _��
�� ' � .3� � ' � i r ' 6' !�' 4. Plugged media.
�
�� �'� a. If pore space between media granules is absent,
���.� �..r , _"`�� °` maintenanceisrequired.
� a � �-; � �� � '��'"�s � �� . 5. Bn�ass condition.
� ny
.s-r,, ' � �-:,- a. If inspedion is conducted during ar, average rain fall
F�'��° �5�;�� � event and StocmFi{ter remains in bypass condition
t 4PFx �
�' a y �„�N�r� '<i .� ��; .. '� - _ (wzter over the intemal outle? baifle wall r,r submerged
`' S,rN���r�'".�,��F' - � cartridges),maintenanceisrequired.
2., t ,
3. Open the access oortals to the vault and allow the system vent. 6. Hazardous material release.
4. Without entering the vau!t, visually inspect the inside of the a. If nazardow material release (automotive fluids or other)
unit, and note accumulations ef liquids and solids. is reoorted, maintenance is required.
5. Be sure to record the level of sediment 6uild-up on the floor ef 7 pronounced scum line.
the vault, in the forzbay, and or too of the cartridaes. if flow a. If oronounced scum line (say ? 1/4" thick) is present
• is occurring, note the ffow of water per drainage pipe. Record
all observations. Diqital pictures.are valuzb�e for historical above tep cap, maintenance is.reGuired.
documentation. 8. Calendar Lifecyde.
6. Close and fasten the access portals. a. If system has not been maintained for 3 years
� maintenance is reyuired. - �
Assumptions
. • No rainfall for 24 hours or more �� .
a ,..
• No upstream det?niion (at least noi draining into StormFilter} —-- _ . -
. • Structure is online ��;. � -
�
• • Outlei pipe is dear of obstrudion . ��� �? �-
1�:s t z.
• Construction bypass is plugged � �,,,,.;� � �'� §�
Maintenance
Depending en the mnfiguration of ihe particular system,
mairitenance personnel will be reyuired to enter tne vault to
perform the maintenance. � � ` , •, s
Important: If vauit enTry is required, OSHA ru�es for conflned ,
space entry must be foltowed. i� �', f
Filier cartrid e re Iacerr�ent should occur durin dr weather. - :- ��
9 P 9 Y i: �:. �� t o-'�d� -v`� n � •
It may be necessary to plug the filter inlet pipe if base (Icws is �+�'
� i �.
occurrinq. .��}..,:, �'" A,.'��
��
� Replaczment cartridges can be delivered to the site or customers �,�,�,,�� 1�'� �. k{'� • :. T
facility. Information concerning how to obtain the repiacement ��'¢ �F�, �� f �;,- �� - �� �
cartridges is available from CCNTECH Corstrudion Products. >� 4� �� ��` '` �
i�, ��.
Waming: In the case of a spiV, the maintenance personnef �% � �� ��"` ��
should abort maintenance activi[ies until the proper
guidance is obtained Notify the Iocal hazard ccntrol ��
ag2ncy and CONTECH Corstruction Products immediately. �: �
r
To condud cartridge replacement and sediment remova! _ �....k� x ..7��
maintenance: linportant: that cartndges contaming�leaf inedia (CSFj�do��
• 7. If applicable, set up safety equipment to protect ma+rtenance net reqinre unscremnng from`the�r connedors Take care
personnel and pedestrians from site hazards. not to damage the�manrfold'connec�ors. This connector �'.
, 2. Visually insped the exterral mndition of the unit and take should�;remain installed in the manifold andlcoultl 6e ��:
notes concernino defect�probiems. � caoped..during,the�maintenance actiwty to prevent, `
szdiments from entering the under`drain mamfold �.
3. Ooen the doers (access portals) to the vault and allow the -� � - ��
system to vent. B. Remove the used cariridges (up to 250 Ibs. each) from the
4. Without entering the vault, give the irside of the unit, vault.
induding components, a generai cendition inspection. _:jmportant::Gare must be used to avoid damaging th2 -
� 5. Make notes about the eaternal and intemal mndition of � ca•tridges dunng reinoval and installation. The cost of :-. �
the vault. Give particular attention to recording ihe level of � repziring components damaged maint2nance .
sediment build-up on the floor of the vault, in the farebay, wi11 6ethe responsibility of the owner unless CONTECH� -
and on top of the intemal components. Consfruction Products performs�the maintenance activities
6. Using appropriate equioment otiload the replaczment � and dzmage is not�related to discharges to�the system�.� ;-
cartridges (up to 7 50 16s. each) and set aside.
C Set the used cartridge aside or load onto the haufing
7. Femove used cartridges from tne vault usina ene of the i�uck.
fo�lowing metheds:
D. Continue steps a ti�rough c until all cartridges have been �
Method 1: removed.
A. This activiry will require that maintenance personnel enter
Yne vault to remove the cartridges from the under drain Method 2:
manifold and pl;ce them under the vault opening for A. Enter the vault using appropriate confined space
lifting (removaq. Unsuew (counterclockwise rotatiens) protoccis.
zach flter cartridge from the underdrain connector.
Roll the loose cartridge, on edge, to a convenient spor B� Unscrew the cartridge cap.
beneath the vault access. C Remove the cartridge hood screws (3) hood and float.
• Using appropriate hoisting equipment, attach a cabie G. At {ocation under structur= access, tip the cartridge on its
from the boom, crane, or tripod to the loose car±ridge. side.
Contact CONTECH Construdion Produds for suggested
attachment devices. -
' important: Note,that ca�tridges mntaining med�a other than `
the leaf inedia require uns�revmng from tneir thread�d ,
connectors; Take care not to damagz the rrianiiold
connectors: This connector shouid:remain installed in`the �'
� ��manifoid�and�capped if necessary -: ' ` ' � '
• D. �Empty the cartidge onto the vault fioor. Reassemble the �� �
empty ca; tridge.
�
E. Set Lhe empty, used cartridge aside or load onto the �����"'-"'��' "��-�'�q e �"s a, ..' �� ��� ��
. haul'ing truck. ��� � � ��.� . �
..h'. W�+SrS'Tr� �'�'S , �
E Continue ste�s a through e until all cartridges have been �"' �'� �� t� �_ �` ...`_ .
removed. - 6 � 3:. `� z �^ � #.,� '� �-:,`',.+,
.+.?&. �`: .-.�k*'y:a± . ,. . .�:._
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8. Remove accumulated sediment from the floor of the -_ ��:;. .
vault and from the forebay. This can mesi e"ffectively be _
' acccmolished by use of a vacuum truck. _
M 4 X i '^' v'^�...
�
9. Once the sediments are removed, asess the ccndition of the "�� ' � ^�'� � ��" ;
vault and the condition of the connectors. The connectors _,. �� {� �i �� �'� �`- �.k�� ��
_ tha, snoulu roirud� about � above The � . J �.
are short sections of 2-inch schedule 40 PVC, or ihreaded -� � n ;
schedule 80 PV� � � p ,. +° x'�''�
��
floor of the vault. Lightly wash down the vault interior. ti��
a. Repl;ce any damaged conr�ectors. „
������ . �
10. Using the vacuum truck beom, crane, or tripod, lower and �, `� -�u:�' . ����" '
install the new cartridges. Once again, take care not to � � .
- damage mnnec?ions.
11. Close and fasten the door.
72. Remove safety equipment.
13. Finally, dispose of the acwmulated rnatzrials in accordance
• with applicable regulations. Make arrangements to retum the
used m� czrtridges to CONTECH Construction Produds.
Related Maintenance Activities - Material Disposal
Performed on an as-needed basis � The accumulated sediment found in stormwater treatment �
StormPilter units are often just one of many strudures in a more and conveyance systems must be handled and dispesed of in
mmprehensive stormwater drainaoe and treatment system. aaordance with regulatory protecols. It is possi6�e for sediments
• io contain measurable concentrations of heavy metais and
ln order tor maintenance of the StormFilter to be successful, it organic chemicals (such as pesticides and petroleum productr). '
is imperative that ali other components be properly maintained. Areas with the greatest potential for high pollutant loading
The maintenance/repair of upstream facilities should be carried � indude industrial areas and heavily traveled roads. �
out orier to StormFilter maintenance activiiies. � �
Sediments and water must be disposed of in accerdance with
In addition to considering upstream facilities, it is also important all applicable waste disposai regulations. When scheduling
to corred any problems identifed in the drainage area. Drainaoe maintenance, mnsideration must be made for the disposal of
area concems may indude: erosion problems, heavy oil loading, solid and liquid wastes. This typically requires coordination with
. and discharges of inappropriate materials. a local landtill for solid waste disposal. For liquid �vaste disposal
a number of options are available induding a municipal vacuum
truck decant facility, local waste water treatment plant or on-site
treatment and discharge.
• �
�
��p PAPERCiED . �
' w����uvrnu
�.�;:: s�•*
�a� �,oe�.,,:�
. 800.338.1122
www.contech-cpi.com
support
• Drewings and specifications are available at contechstormwateccom. � �
�• Site-specitic design support is availabfe from our engineers � � � �
�02009 CONTECH Construction Products Inc. �
CONTECH Construction Products Inc. provides site solutions for the civil engineering industry. CONTECH's portfolio includes
bridges, drainage, sanitary sewer, stormwater and earth stabilization products. For information on other CONTECH division
offerings, visit contech-cpi.com or call 500338.7122
� othiny in this catalog should be construed as an expressed warranty or an implied warranty of inerchantability or fitness for
y particular purpose. See the CONTECN standard quotation or acknowledgement for applicable warranties and other terms.
and conditions of sale. � �
Theproduct(x)descri6edmaybepro[xteabyoneormoreotthefollowingUSpaten[s: 5,322,629 ; 5,624,5 J 6 ; 5, J 0],52] ; 5 ,] 5 9,9i5;5,]68,848;5,965,15];"o,0U,639;b,350.3]4;6,406.218; '
6,64 i,RO; 6,St 1,595; 6,649,046; 6,991,114; 6,998,038; ],186,058; relatM tareign pahnts or o[her pntena pendirg.
_ � . �• o• e •ae
� Date: Personnel:
• I Location: System Size: �
I System Type: Vault ❑ Cast-In-Piace ❑ Linear Catch Basin ❑ Manhole �� O,her ❑
Sediment Thickness in For<bay: Date:
I Sediment Depth on Vault Floor: -
� Structurai Damage:
I E=_timated Flow from Drainage Pipes (if available):
' Cartridges Submerged: Yes [� No � Depth of Standing Water.
Stormfilter Maintenance Activities (check off if done and give description) �
I ❑ Trash and Debris Removal:
� ❑ Minor Strudural Repairs:
I � DrainageAreaReoort �
I Excessive Oil Loading: Yes � No � Source:
Sediment Accumulation on Pavement: Yes � No � Source:
I crosion of Landscaped Areas: Yes � No � Source:
� Items Needing Further Work: - �
I O�Nners should contact the local public wor!cs deoartment and inquire about how the department disposes of i'r.eir street ti�aste
. residuals. - �
� Other Commerts:
�
�
�
�
�
�
�
I
i
�
i
• �
�
I
�. Review Yhe condition reoorts from the previous inspection visits. I
�
o 'e•
�
. • Date: Perwnnel: � . .. I
Location: Systein Size: I
t System Type: Vault ❑ Cast-In-Piace ❑ Linear Catch Basin ❑ Manhole ❑. Other ❑
� �
Lfst Safery Procedures and Equioment Used:
�
�
System Observations I
Monihs in Service: �
Oil in Forebay: yes ❑ No ❑ � . . �
Sediment Dzpth in Forebay: I
Sediment Depth on Vault F�oor: I
Structural Damage: �
DrainageArea Report I
� Excessive Oil Loading: Yes ❑ No � Source: (
Sediment Accumulation on Pav2ment: Yes [� No � Sourc2: I
•osion of Landscaped Areas: Yes � No � Source: � I
StormFilter Cartridge Replacement Maintenance Activities I
Remove Trash anc Debris: Yes ❑ No ❑ Details: � I
Replace Cartridges: Yes (� No � Details: �
Sediment Removed: Yes � No � Details: I
Quantity of Sediment Removed (estimate?): � �
Minor Structurel Reoairs: Yes � No � Detaiis: I
Residuals (debris, sediment) Disposai Methods: � � �
Notes: I
�
�
�
�
� I
� I
�
, �
Water Quality Management Plan (WQD9P)
FRONT STREET PLAZA
� Appendix H
PHASE 1 ENVIRONMENTAL SITE ASSESSMENT - SUMMARY OF SITE REMEDIATION
CONDUCTED AND USE RESTRICTIONS
NOT CONDUCTED
�
�