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HomeMy WebLinkAboutTract Map 32780 Water Quality Managment Plan e Project Specific Water Quality Management Plan For: Tentative Tract 32780 DEVELOPMENT NO. DESIGN REVIEW NO. - Prepared for: e Walcott Investments 45621 Cone Royal Temecula, 01 92592 (909) 855-3338 Prepared by: Van Dell and Associates, Inc. 255 E Rincon Street, Suite 323 Corona, 01 92879 (951) 340-0030 e WQMP Preparation/Revision Date: August 2005 , Water Quality Mauagement Plan (WQMP) Tentative Tract Map 32780 ._ OWNER'S CERTIFICATION . e This project-specific Water Quality Management Plan (WQMP) has been prepared for: Walcott Investments by Van Dell and Associates for the project known as Tentative Tract 32780 located along the east side of Walcott Lane. in the city ofTemecula, County of Riverside. This WQMP is intended to comply with the requirements of set forth by the City ofTemecula for Tentative Tract 32780, which includes the requirement for the preparation and implementation of a project-specific WQMP. The undersigned, while owning the property/project described in the preceding paragraph, shall be responsible for the implementation of this WQMP and will ensure that this W(;)MP is amended as appropriate to reflect up-to-date conditions on the site. This WQMP will be reviewed with the facility operator, facility supervisors, employees, tenants, maintenance and service contractors, or any other party (or parties) having responsibility for implementing portions of this WQMP. At least one copy of this WQMP will be maintained at the project site or project office in perpetuity. The undersigned is authorized to certifY and to approve implementation of this WQMP. The undersigned is aware that implementation of this WQMP is enforceable under City of Temecula Water Quality Ordinance (Municipal Code Section; Title 8 - Chapter 8.28). If the undersigned transfers its interest in the subject property/project, its successor in int.:rest the undersigned shall notifY the successor in interest of its responsibility to implement this WQMP. "I certifY under penalty of law that the provision of this WQMP have been reviewed and accepted and that e WQMP will be transferred to future successors in interest." -=:;^-. ~J\~ I u'-; Date Ob~at~~~L- Owner's Printed Name ~"''t....",'l.~' ~~~,vI Owner's Title/Position August, 2005 7-- Water Quality Management Plan (wQMP) Tentative Tract Map 32780 - Contents Section Page PROJECT DESCRIPTION A-I II SITE CHARACTERIZATION A-4 1lI POLLUTANTS OF CONCERN A-6 IV HYDROLOGIC CONOlTIONS OF CONCERN A-7 V BEST MANAGEMENT PRACTICES A-8 V.I Site Design BMPs A-9 V.2 Source Control BMPs A-16 V.3 Treatment Control BMPs A-18 VA Equivalent Treatment Control Alternatives A-21 V.5 Regionally-Based Treatment Control BMPs A-21 VI OPERATION AND MAINTENANCE REsPONSffilLITY FOR TREATMENT CONTROL BMPs A-22 VII FUNDING A-23 e APPENDICES A. CONDITIONS OF APPROVAL B. VICINITY MAP AND SITE PLAN C. SUPPORTING DFrAIL RELATED TO HYDRAULIC CONDITIONS OF CONCERN (IF APPLICABLE) D. EDUCATIONAL MATERIALS E. SOILS REPORT (IF APPLICABLE) F. TREATMENT CONTROL BMP SIZING CALCULATIONS AND DESIGN DETAILS G. AGREEMENTS - Cc&Rs, CoVENANT AND AGREEMENTS AND/OR OTHER MECHANISMS FOR ENSURING ONGOING OPERATION, MAINTENANCE, FUNDING AND TRANSFER OF REQUIREMl':NTS FOR THIS PROJECT- SPECIFIC WQMP H. PHASE I ENYrRONMENTAL SITE AsSESSMIo"NT - SUMMARY OF SITE REMEDIATION CONDUCTED AND USE RESTRICTIONS . A-i August, 2005 .3 e e . Water Quality Management Plan (WQMP) Tentative Trad Map 32780 1. Project Description The project description shall completely and accurately describe in namltivc form, and with supporting figures (rnaps or exhibits), where facilities will be located, what activities 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; . Project size; . Standard Industrial Classification (SIC), if applicable; . Location of facilities; . Activities and location of activities; . Materials Storage and Delivery Areas; . Wastes generated by project activities. Project OWner: Walcott Investments 45621 Cone Royal Temecula, 01 92592 Telephone: (909) 855-3338 WQMP Preparer: Van Dell and Associates, Inc. 255 E Rincon Street, Suite 323 Corona, 01 92879 Telephone: (951) 340-0030 August, 2005 A-I ~ . . .: Water Quality Management Plan (WQMP) Tentative Tral'l Map 32780 Project Site Address: Walcott Lane, approximately 3,500 feet north of Serena Way City of TemecuJa Planning Area/ Community Name: APN Number(s): N/A 957-170-032, 957-170-033, 957-170-034, 957-170-035, 957-170-036 Thomas Bros. Map: Riverside County, map page 959/ grid E2 Project Watershed: Santa Margarita Sub-watershed: Auld Project Site Size: 22.45 Acres- Standard Industrial Oassification (SIC) Code: Not Applicable Formation of Home Owners' Association (HOA) or Property Owners Association (POA): HOA Additional Permits/Approvals required for the Project AGENCY State Department of Fish and Game, 1601 Streambed Alteration Agreement State Water Resources Control Board, Clean Water Act (CWA) section 401 Water Quality Certification US Army Corps of Engineers, CWA section 404 permit US Fish and Wildlife, Endangered Species Act section 7 biological opinion Other (please list in the space below as required) Permit required (yes or no) NO NO NO NO NONE Appendix A of this project-specific WQMP includes a complete copy of the final Conditions of Approval. Appendix B of this project-specific WQMP shall include: I. A Vicinity Map identifying the project site and surrounding planning areas in sufficient detail to allow the project site to be plotted on Co-Permittee base mapping; and 2. A Site Plan for the project The Site Plan included as part of Appendix B depicts the following project features: . Location and identification of all structural BMPs, including Treatment Control BMPs; . Landscaped areas; A-2 ? August, 2005 e e e Water Quality Management Piau (WQMP) Tentative Tract Map 32780 . Paved areas and intended uses (i.e., parking, outdoor work area, outdoor rnaterial storage area, sidewalks, patios, tennis courts, etc.); . Number and type of structures and intended uscs (i.e., buildings, tenant spaces, dwelling units, community facilities such as pools, recreation facilities, tot lots, etc.); . Infrastructure (i.e., streets, storm drains, etc.) that will revert to public agency ownership and operation; . Location of existing and proposed public and private storm drainage facilitics (i.e., storm drains, channels, basins, etc.), including catch basins and other inlets/outlet structures. Existing and proposed drainage facilities should be clearly differentiated; . Location(s) of Receiving Waters to which the project directly or indirectly discharges; . Location of points where onsite (or Iributary offsite) flows exit the property/projed site; . Proposed drainage areas boundaries, including Iributary oflsite areas, for each location where flows exits the property/project site. Each tributary area should be clearly denote. I; . Pre- and post-project topography. Appendix G of this project-specific WQMP shall include copies ofCC&Rs, Covenant and Agreements, and/or other mechanisms used to ensure the ongoing operation, maintenance, funding, transfer and implementation of the project-specific WQMP requiremcnts. A-3 ~ August, 2005 e . .. Water Quality Management Plan (WQMP) Tentative Tract Map 32780 II. Site Characterization Land Use Designation or Zoning: Current Property Use: Proposed Property Use: Availability of Soils Report: Phase 1 Site Assessment: Single Family Residential Vacant - existing land covered with medium sized vegetDtion and no above/below ground structures Residential - TentDtive Tract 32780 is to be developed into typical residential lots for the purposes of single family residences. Y (attached to Appendix E) Not Applicable A-4 '\ August, 2005 e e e Water Quality Managemeut l'lau (wQMP) Tentative Tract Map 32780 Receiving Waters for Urban Runoff from Site Receiving Waters 303( d) List Designated Beneficial Proximity to RARE Imoairments Uses Beneficial Use POLLUTANT: MUN, AGR, INo, Not Applicable SanftJ Gertrudis phosphorus PRQC, GWR~ RECl, Creek REC2, WARM, WILD TMDL PRIORITY: low " Potential Beneficial use MUN - Munidpal and Domestic SUpply, AGR - Agrimltural Supply, IND - IndustJial Service Supply, PROC - Industrial Process Supply, GWR - Groundwater Recharge, NA V - Navigation, POW - Hydropower, REC1 - Water Contact Recreation, REC2 - Non- contact Water Recreation, COMM - Commercial and Sportfishing, WARM - Wann Freshwater Habitat, LWRM - Umited Wann Freshwater Habitat, COLD - QJld Freshwater Habitat, BIOL - Preservation of Biological Habitat of Special Impolfance, WIW - Wildlife Habitat, RARE - Rare, Threatened or Endangered Species, 5PWN - Spawning, Reproduction and Development, MAR - Marine Habitat, SHEL - Shellfish Harvesting ro A-S August, 2005 e e e Water' Quality Management Plan (wQMP) Tentative Tract Map 32780 III. Pollutants of Concern Potential pollutants associated with Urban Runoff frorn the proposed prqject must be identified. Exhibit B of the WQMP provides brief descriptions of typical pollutants associated with Urban Runoff and a table that associates typical potential pollutants with types of development (land use). It should be noted that at thc Co- Permittees discretion, the Co-Permittees may also accept updated studies from the California Association of Stormwater Quality Agencies (CASQA), USEPA, SWRCB and/or other commonly accepted agencies/associations acceptable to the Co-Permittee for determination of Pollutants of Concern associated with given land use. Additionally, in identitying Pollutants of Concern, the presence of legacy pesticides, nutrients, or hazardous substances in the site's soils as a result of past uses and their potential for exposure to Urban Runoff must be addressed in project-specific WQMPs. The Co-Permittee may also require specific pollutants commonly associated with urban runoff to be addressed based on known problems in the watershed. The list of potential Urban Runoff pollutants identified for the project must be compared with the pollutants identified as causing an impairment of Receiving Waters, if any. To identity pollutants impairing proximate Receiving Waters, each project proponent preparing a project-specific WQMP shall, at a rninirnurn, do the fi,llowing: I. For each of the proposed project discharge points, identity the proximate Receiving Water for each discharge point, using hydrologic unit basin numbers as identified in the most recent version of the Water Quality Control Plan for the Santa Ana River Basin or the San Diego Region. 2. Identity each proximate identified above that is listed on the most recent list of Cl~an Water Act Section 303( d) list of impaired water bodies, which can be found at website www.swrcb.ca.gov/trndV303d_lists.htrnl. List all pollutants for which the proximate Reeeiving Waters are impaired. 3. Cornpare the list of pollutants for which the proxirnate Receiving Waters are impaired with the pollutants expected to be generated by the project. Urban Runoff Pollutants: Pollutants of Concern (Exhibit B of Riverside County WQMP): . Pathogens (bacteria/virus) . Nutrients . Pesticides . Organic Compounds . Sediments . Trash and Debris . Oxygen-Demanding Substances (biodegrodable organic material) . Oil and Grease A-6 <\ August, 2005 e e e Water Quality Management l'lan (wQMP) Tentative Tract Map 32780 IV. Hydrologic Conditions of COnCeITI Impacts to the hydrologic regime resulting from the Project may include increased runoff volumc and velocity; reduced infiltration; increased flow frequency, duration, and peaks; faster time to reach peak flow; and water quality degradation. Under certain circurnstances, changes could also result in the reduction in the amount of available sediment for transport; storm flows could fill this sedirnent-carrying capacity by eroding the downstream channel. These changes have the potential to permanently impact downstream channels and habilat integrity. A change to the hydrologic regime of a Project's site would be considered a hydrologIC condition of concern if the change would have a significant impact on downstream erosion compared to the pn,-developrnent condition or have significant impacts on stream habilat, alone or as part of a cumulative impact from development in the watershed. This project-specific WQMP must address the issue of Hydrologic Conditions of Concern unless one of the following conditions are met: . Condition A: Runoff from the Project is discharged directly to a publicly-owned, operated and mainlained MS4; the discharge is in full compliance with Co-Permittee requirernents lilr connections and discharges to the MS4 (including both quality and quantity requirernents); the discharge would not significantly impact stream habitat in proxirnate Receiving Waters; and the discharge is authorized by the Co-Permittee. . Condition 8: The project disturbs less than I acre. The disturbed area calculation should include all disturbances associated with larger plans of development. . Condition C: The project's runoff flow rate, volume, velocity and duration for the post-developrnent condition do not exceed the pre-development condition for the 2-year, 24-hour and HI-year 24-hour rainfall events. This condition can be achieved by minimizing impervious area on a site and incorporating other site-design concepts that mimic pre-developrnent conditions. This <:andition rnust be substantiated by hydrologic modeling methods acceplable to the Co-Permittee. This Project meets the following condition: CONDITION C Supporting engineering studies, calculations, and reports are included in Appendix C. A-7 \f) August, 2005 . e e Wate.' Quality Management r~lan (wQMP) Tentative Tract Map 32780 V. Best Management Practices V,l SITE DESIGN BMPs Project proponents shall irnplernent Site Design concepts that achieve each of the following: I) Minimize Urban Runoff 2) Minimize Impervious Footprint 3) Conserve Natural Areas 4) Minimize Directly Connected Impervious Areas (DClAs) The project proponent should identifY the specific BMPs implemented to achieve each Site Design concept and provide a brief explanation for those Site Design concepts considered not applicable. See Section 4.5.1 of the WQMP for additional guidance on Site Design BMPs. If a particular Site Design BMP concept is found to be not applicable, please provide a brief explanation as to why the concept cannot be irnplemented. Also provide a narrative describing how each included BMP will be implemented. In those areas, where Site Design BMPs require ongoing maintenance, the IDspection and maintenance frequency, the inspection criteria, and the entity or party responsible for implemenlation, maintenance, and/or inspection shall be described. The location of each Site Design BMP must also be shown on the WQMP Site Plan included in Appendix B. A-8 \'- August, 2005 e . e Water Quality Management l'lan (wQMP) Tentative Tract Map 32780 Table l. Site Design BMPs Design Technique Concept Site Design Minimize Urban Runoff Concept 1 Included yes Specific BMP Maximize the permeable area (See Section 4.5.1 ot the WQMP. Incorporate landscaped buffer areas between sidewalks and streets. Maximize canopy interception and water conservation by preserving existing native trees and shrubs, and planting additional native or drought tolerant trees and large shrubs. Use natural drainage systems. Where soils conditions are suitable, use perforated pipe or gravel filtration pits for low flow infiltration. Construct onsite ponding areas or retention facilities to increase opportunities for infiltration consislent with vector control ob'eclives. Other comparable and equally effective site design concepts as approved by the Co-Permittee (Note: Additional narrative required 10 describe BMP and how it addresses Site Design concept). August, 2005 ,/' v~ v~ v~ N/A v~ v~ A-9 \1-- e e e Water Quality Management Plan (wQMP) Tentative Tract Map 32780 Table I. Site Design BMPs (Con!.) Design Technique Concept Site Design Minimize Concept 1 Footprint Impervious Specific BMP Included yes Maximize the permeable area (See Section 4.5.1 of the WQMP. Construct walkways, Irails, patios, overflow parking lots, alleys, driveways, low-traffic streets and other low -traffic areas with open-jointed paving materials or permeable surfaces, such as pervious concrete, porous asphalt, unit pavers, and granular materials. ,/ NIA Construct streets, sidewalks and parking lot aisles to the minimum widths necessary, provided that public safety and a walk able environment tor pedestrians are not compromised. Reduce widths of street where off-street parking is available. / " "I Minimize the use of impervious s,urfaces, such as decorative concrete, in the landscape design. "I other comparable and equally effective site design concepts as approved by the Co-Permittee (Note: "I Additional narrative required describing BMP and how it addresses Site Desi n concept). Site Design Conserve Natural Areas Concept 1 Conserve natural areas (See WQMP Section 4.5.1). ,," Maximize canopy interception and waler conservation by preserving existing native trees and shrubs, and planting additional native or drought tolerant trees and large shrubs. "I A Use natural drainage systems. 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 Desi n conce t. NIA ./ A-IO August, 2005 \~ e e e Watel' Quality Management Plan (WQMP) Tentative Trad Map 32780 Table I. Site Desigo BMPs (Coot.) Included Design Technique Specific BMP yes Conceot Site Design Minimize Directly Residential and commercial sites must be designed to Concept 2 Connected Impervious contain and Infiltrate roof runoff, or direct roof runoff to ,f Areas (DCIAs) veoetative swales or buffer areas, where feasible. Where landscaping is proposed, drain impervious sidewalks, walkways, trails, and patios into adjacent ,f landscaping. Increase the use of vegetated drainage swales in lieu of underground piping or imperviously lined swales. Rural swale system: street sheet flows to vegetated swale or gravel shoulder, curbs at street comers, culverts under drivewavs and street crossinQs. Urban curblswale system: street slopes to curb; periodic swale inlets drain to vegetated swaleJbiofilter. Dual drainage syslem: First flush captured in street catch basins and discharged to adjacent vegetaled swale or gravel shoulder, high flows connect directly to MS4s. Design driveways with shared access, flared (single lane at street) or wheel strips (paving only under tires); or, drain into landscaping prior to discharging to the MS4. 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. Where landscaping is proposed in parking areas, incorporate landscape areas into the drainage design. Overflow parking (parking stalls provided in excess of the Co-Permittee's minimum parking requirements) mav be consIructed with permeable pavina. Other comparable and equally effective design concepts as approved by the Co-Permittee (Note: Additional narrative required describing BMP and how it addresses Srte Design concept1- ,( August, 2005 no N/A N/A N/A N/A N/A N/A N/A N/A A-II \At e e e Water' Quality Management Plan (WQMP) Tentative Tract Map 32780 L Site Design Concept I LA. Minimize Urban Runoff LA.a. Maximize the permeable area Description: The permeable area will be maximized to the fullest ,'xtent possible during precise grading LA.b. Incorporate landscaped buffer areas between sidewalks and streets Description: Landscape buffer areas between sidewalks and streets are incorporated through the County of Riverside's County Road Improvement Standards LA.c. Maximize canopy interception and water conservation by preserving exi~ting native trees and shrubs, and planting additional native or drought tolerant trees ,md large shrubs. Description Landscape slope protection with drought tolerant native plants will be incorporated on all excavated slopes LA.d. Use natural drainage systems. Description Natural drainage systems will be used throughout the site to highest extent possible LA.e. Where soils conditions are suitable, use perforated pipe or gravel filtration pits for low flow infiltration. Description LA.f. Construct onsite ponding areas or retention facilities to increase opportunities for infiltration consislent with vector control objectivllS. Description Onsite detention basins will be constructed within the limits of proposed project LA.g. Other comparable and equally effective site design <:oncepts as approved by the Co- Permittee (Note: Additional narrative required to describe BMP and how it addresses Sire Design concept). Description Not Applicable to this project I.B. Minimize Irnpervious Footprint LB.a Maximize the permeable area (See Section 4.51 of the WQMP). A-12 \~ August, 2005 e e . Water Quality Management Plan (wQMP) Tentative Tract Map 32780 Description Permeable areas have been maximized throughout the project site; parks, landscape development zones, open space, landscape buffer zones I.B.b Construct walkways, trails, patios, overflow parking lots, alleys, driveways, low-traffic streets and other low-traffic areas with open-jointed paving rnaterials or [Iermeable surfaces, such as pervious concrete, porous asphalt, unit pavers, and granular materials. Description Not applicable to this project. The difference in post-development and pre-development runoff has been mitigated by the constrUI:tion of the on-site detention/infiltration basins. I. B.c. Construct streets, sidewalks and parking lot aish:s to the minirnum width" necessary, provide that public safety and a walk able environment for pedestrians ar" not compromised. Description Minimum street and sidewalk widths are provided in accordance with the Riverside County Road Improvement Standards I.B.d Reduce widths of street where off-street parking is available. Description Minimum street widths are provided in accordance with the Riverside County Road Improvement Standards I.B.f. 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). Description I.C. Conserve Natural Areas I.C.a. Conserve natural areas (See WQMP Section 4.5.1). Description I.C.b. Maximize canopy interception and water conservation by preserving existing native trees and shrubs, and planting additional native or drought tolerant trees and large shrubs. Description Landscape slope protection witll drought tolerant native plants will be incorporated on all excavated slopes I.C.c. Use natural drainage systems. Description Not applicable to this project. Minimal width street right-aI-way and various street grades prohibit u<e of natural drainage systems. The difference in post-development and pre-development runoff has been mitigated by the construction of the on-site detention/infiltration basins. A-13 \~ August, 2005 e e . Water Quality Management Plan (WQMP) Tentative Tract Map 32780 LCd. 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). Description II. Site Design Concept 2 ILA. Minirnize Directly Connected Impervious Areas (DCIAs) II.A.a. Residential and comrnercial sites must be designed to contain and infiltrate roof runoff, or direct roof runoff to vegetation swales or butler areas, where feasible. Description Roof top runoff will be directed into adjacent landscaping on private property as part of the precise grading plans. II.A.b. Where landscaping is proposed, drain irnpervious sidewalks, walkways, trails, and patios into adjacent landscaping. Description Landscaping is provided between sidewalks and street curbs in accordance with the Riverside County Road Improvement Standards. On local street where landscaping is not provided, storm water runoff is directed via storm drain system to the project '.I' detention/infiltration basin. 1I.A.c Increase the use of vegetated drainage swales in lieu of underground piping or imperviously lined swales. Description Not applicable to this project. Minimal width street right-ofway and various street grades prohibit use of natural drainage systems. Storm runoff will be treated with landscape areas at the project site and the proposed detention/infiltration basin. II.A.d. Rural swale system: Street sheet flows to vegetated swale or gravel shoulder, curbs at street comers, culverts under driveways and street crossing. Description Not applicable to this project. Storm runoff will be treat"d with landscape areas at the project site and the proposed detention/infiltration basin II.A.e. Urban curb/swale system: street slope to curb: periodic swale inlets drain to vegetated swaleJbiofilter. Description Not applicable to this project. Storm runoff will be treat"d with landscape areas at the project site and the proposed detention/infiltration basin II.A.f. Dual drainage system: First flush captured in stn:et catch basins and discharged to adjacent vegetated swale or gravel shoulder, high flows connect directly 10 MS4s. A-14 ,~ August, 2005 e . . Watet' Quality Management Plan (wQMP) Tentative Tract Map 32780 Description Not applicable to this project. Storm runoff will be treated with landscape areas at the project site lmd the proposed detention/infiltration basin ILA.g. Design driveways with shared access, flared (single lane at street) or wheel strips (paving only under tires); or, drain into landscaping prior to discharging 10 the MS4. Description Roof, yard and sidewalk runoff is directed to landscape areas on private property. Driveway and street runoff is directed to the Project Site onsite detention/infiltration basin. ILA.h. 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. Description Roof, yard and sidewalk runoff is directed to landscape areas on private property. Driveway and street runoff is directed to the Project Site onsite detention/infiltration basin. 1I.A.i. Where landscaping is proposed in parking areas" incorporate landscape areas into the drainage design. Description Not applicable to this project. Single family residentiallmits with attached garage and street parking with Public streets. No off street parking lots and/or areas II.A.j. Overflow parking (parking slalls provided in eXGess ofthe Co-Permittee',; rninimum parking requirements) may be constructed with permeable paving. Description Not applicable to this project. Single family residential units with aI/ached garage and street parking with Public streets. No off street parking lots and/or areas II.A.1e. Other comparable and equally effective site design wncepts as approved by the Co- Permittee (Note: Additional narrative required describing BMP and how it addresses Site Design concept). Description A-15 \\ August, 2005 Water' Quality Management Plan (wQMP) Tentative Trad Map 32780 . V.2 SOURCE CONTROL BMPs Table 2. Sonrce Control BMPs Check One Not state BMP Name Applicable Non-Structural Source Control BMPs Education for Property Owners, Operators, Tenants, Occupants, ../ or Em 10 ees Aclivity Restrictions ../ N1A to Single Family Develo menl lnigation Syslem and Landscape Maintenance ../ Common Area Utter Control ../ NIA to Single Family Develo menl Street Sweeping Private Streets and Par1<ing Lots ../ Drainage Facility lnspeclion and Maintenance ../ Structural Source Control BMPs MS4 Stenciling and Sign age ../ Landscape and lnigation System Design ../ . Proteel Slopes and Channels ../ Provide Community Car Wash Racks ../ N1A to Single ramily Develo men! Fueling Areas ../ N1A 10 Single ramily Develo ment "'r/Water Supply Area Drainage ../ N1A to Single ramily Davelo menl Trash Storage Areas ../ N1A 10 Single ramily Davelo menl Loading Docks ../ N1A to Single family Develo menl Maintenance Bays ../ N1A to Single family Develo menl Vehicle and Equipment Wash Areas ../ N/A 10 Single Family Develo ment Outdoor Material Storage Areas ../ N1A 10 Single family Davelo menf Outdoor Wor1< Areas or Processing Areas ../ N1A to Single family Davelo men! Provide Wash Water Controls for Food Preparation Areas ../ N1A 10 Single family Davelo men! . f;~~~'~~~~:---:"~'''::7~~:~-:~-:':- ----><r "..._~ "~'_-~-~' ~--~-:: ~ ~-" ~-_.__. -:-~_"~~"-~~'-"~ "-:_- --~~. '--~.~ -- _") Tn.s,~rt tpct~-I{i'?vide'naijf!'fve;desi;ri{iing mi-.;i,tj1cl!,incI"!fed BMP "tJ?iJJ be impJementeik the implemeritatjo"c Jl:.~. '~pectioiz 0(Id ltUlinf?lance fre4.w;nc)f.:fflspection criteria,.a1Jd the e,!lity or party responsible fo~ 1 ,y, Jemeni.''''C' itii:liffteiiil1lce:;,iiilluo'rl";; _ Ett6n.:>:-TheJdi:ation ~I" e~h striu.:tUi-cilSoiuce Control BMP'iiuist k1labe~ho~ntke IV< ''A1P's/ieii!uiiGUlledfu' r Mix:J[-~ ~~--,-~._---- ..0. -------.-- ~~_,__~,_".~., Q._.,_~__. _.,~_.__~ApP!L....._._ A-16 \0... August, 2005 e e e Wate,' Quality Management Plan (WQMP) Tentative Tract Map 32780 Appendix D includes copies of the educational rnaterials that will be used in irnplementing this project-specific WQMP. A-17 1..0 August, 2005 e e e Watel' Quality Management Plan (wQMP) Tentative Tract Map 32780 V.3 TREATMENTCONTROLBMPs Directions for cornpleting Table 3: Treatment Control BMP Selection Matrix For each pollutant of concern enter "yes" if identified using Exhibit Il (Riverside County WQMP - General Categories of Pollutants of Concern per the instructions specified in Section III of this Template:', or "no" ifnot identified for the project. Check the boxes of selected BMPs that will be implemented for the project to address each pollutant of concern from the project as identified using Exhibit B. Treatment Control BMPs must be selected and installed with respect to identified pollutant characteristics and concentrations that will be discharged from the site. For any identified pollutants of concern not listed in the TreatmenI Control BMP Selection Matrix, provide an explanation of how they will be addressed by Treatment Control BMPs. For identified pollutants of concern that are causing an impairment in receiving waters, the project WQMP shall incorporate one or more Treatment Control BMPs of medium or high effectiveness in reducing those pollutants. It is the responsibility of the project proponent to demonstrate, and document in the project WQMP, that all pollutants of concern will be fully addressed. The Agency may require infonnation beyond the rninimum requirements of this WQMP to demonstrate that adequate pollutant treatment is being accomplished. In addition to cornpleting the Selection Matrix, provide detailed descriptions on the location, implementation, installation, and long-tenn O&M of planned Treatment Control BMPs. Storm water runoff will be collected by proposed catch basins and conveyed downstream to a proposed detention basin. The basin is located onsite and will have a 42-inch outlet conduit, which will serve to peak reduce the runoff to levels that do not increase peak lOa-year flows to the existing culvert crossing on Walcott Road and other downstream properties. The required storage volume of the proposed basin is approximately 2.7 acre-feet including volume for freeboard and emergency spillway flow routing. The proposed basin volume also includes 0.5 acre-feet for water quality detention purposes. The water quality volume was computed by comparing the existing and proposed conditions for the la-year. 24-hour storm water runoff volumes. The proposed condition runoff volume in excess of the existing condition runoff volume was used to establish the required water quality volume to be included in the proposed basin.. Supporting engineering calculations for QBMP and/or VBMP, and Treatment Control BMP design details are included in Appendix F. Note: Projects that will utilize infiltration-based Treatment Control BMPs (e.g., Infiltration Basins, Infiltration Trenches, Porous Pavement) must include a copy of the property/project soils report as Appendix E to the project-specific WQMP. The selection of a Treatment Control BMP (or BMPs) for the project must specifically consider the effectiveness of the Treatment Control BMP for pollutants identified as causing an impainnenl of Receiving Waters to which the project will discharge Urban Runoff. A-IS ~\ August, 2005 . . ~ a .. ... .0 " " - ~ ~a:: := " ...= I:l " ~.~ i'\i a ~~ I:l - '" -= ... - ~l ~. ~'-" OJ D- iD ~ =J CD !i ! ... o g a - lXI ~ In CD iD ... l:!' o' ::) ~ ~ -< s: -< "tl -< Q -< III -< 0 -< ~ -< 0 -< z -< UI "tl CD .. CD .. CD CD .. CD )( CD iil CD .a CD I: CD .. 0 '" it '" .. !!?. ii" !!?. n '" '" !!?. '" !!?. - '" 0- - Z - liT - '" .. z .. , z 3' c z ii" n z (lO z z z :r ::0 z CD 0 0 0 0 ::!. 0 CD 0 0 0 0 liT "" ." ii ." 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C- O' -.., CD iil 0 C I ::I 3_0- r r- r- r- ~ r r- c_ 010'" ;;:: a-;;:: -, ::! ~ .. c: 3 g n' O"tls: ~ a s>> -''''0 :3 n , I: CD -'- C c: c c c c c e e .... .. 1iT!l. -<!:; CD e: >- , - '" ;... ,:g 1:i .- '" c c '" ./b~ e . . Wate.' Quality Management Plan (wQMP) Tentative Tract Map 32780 Abbreviations: L: Low removal efficiency Notes: (1) (2) (3) HIM: High or medium removal efficiency U: Unknown removal efficiency Periodic performance assessment and updating of the guidance provided by this table may be necessary. Includes grass swales,. grass strips, wetland vegetation swales, and bioretention. Includes extended/dry detention basins with grass lining and extended/dry detention basins with impervious lining. Effectiveness based upon minimum 3648-hour drawdown time. (4) Includes infiltration basins, infiltration trenches, and porous pavemenls. (5) Includes permanent pool wet ponds and constructed wetlands. (6) Includes sand filters and media filters. (7) Also known as hydrodynamic devices, baffle boxes, swirt concentrators, or cyclone separators. (8) Includes proprietary stormwater lreabnent devices as listed in the CASQA Stormwater Best Mananement Practices Handbooks, other stormwater treabnent BMPs not specifically listed in this WQMP, or newly developed/emerging stormwater lreabnent technologies. (9) Project proponents should base BMP designs on the Riverside County Stormwater Quality Best Management Practice Design Handbook. However, projecl proponents may also wish to reference the Calilomia Stormwater BMP Handbook - New Development and Redevelopment (www.cabmohandbooks.coml. The Handbook conlains additional information on BMP operation and maintenance. (10) Note: Projects thai will.utilize infiltration-based Treabnent Control BMPs (e.g., Infiltration Basins, Infiltration rrenches, Porous Pavement) must include a copy of the property/project soils report as Appendix E to the project-specific WQMP. The selection of a Treabnent Control BMP (or BMPs) for the project must specifically consider the effectiveness of the Treabnent Control BMP for pollutants identified as causing an impairment of Receiving Waters to which the project will discharge Urban Runoff. A-20 p August. 2005 e . . Watel- Quality Management Plan (wQMP) Tentative Tract Map 32780 VA EQUIVALENT TREATMENT CONTROL AL TERNA TIVES Not Applicable V.5 REGIONALLY-BASED TREATMENT CONTROL BMPs Not Applicable A-21 Augus~ 2005 1A. e e e Watel' Quality Management Plan (wQMP) Tentative Trad Map 32780 VI. Operation and Maintenance Responsibility for Treatment Control BMPs Operation and rnaintenance (O&M) requirements for all structural Source Control and Treatment Control BMPs shall be identified in the project-specific WQMP. The project-specific WQMP shall address the following: . Identification of each BMP that requires O&M. . Thorough description of O&M activities, the O&M process, and the handling and placernent of any wastes. . BMP start-up dates. . Schedule of the frequency ofO&M for each BMP. . Identification of the parties (name, address, and telephone numbcr) responsible for O&M, including a written agreement with the entities responsible for O&M. This agreement can take the form of a Covenant and Agreernent recorded by the Project Proponent with the County Recorder, HOA or POA CC&Rs, formation of a maintenance district or assessrnent district or other instrument sufficient to guarantee perpetual O&M. The preparer of this project-specific WQMP should carefully review Section 4.6 of the WQMP prior to completing this section of the project-specific WQMP. . Self-inspections and record-keeping requirements for BMPs (review local specific requirements regarding self-inspections and/or annual reporting), including idcntification of responsible parties for inspection and record- keeping. . Thorough descriptions of water quality monitoring, if required by the Co-Permittee. Insert text. Please identify operations and maintenance requirements, as described above. for each structural BMP. Where a public agency is identified as the funding source and responsible party for a Treatment Control BMP, a copy of the written agreement stating the public agency's acceptance of these responsibilities must be provided in Appendix G. A-22 1,-$ August, 2005 e e e Water Quality Management Plan (wQMP) Tentative Tract Map 32780 VII. Funding A funding source or sources for the O&M of each Treatment Control BMP identified in the project-specific WQMP must be identified. By certifYing the project-specific WQMP, the Project applicant is certifYing that the funding responsibilities have been addressed and will be transferred to future owners. One example of how to adhere to the requirement to transfer O&M responsibilities is to record the project-specific WQMP against the title to the property. Insert text identifYing the funding source or sources for the operation and maintenance of each Treatment Control BMP included in the project. A-23 ~ August, 2005 e e e Water Quality Management Plan (WQMP) Tentative Tract Map 32780 August, 2005 Appendix A Conditions of Approval Planning Commission Resolution _ Dated ~~ e'- e- . Water Quality Management Plan (WQMP) Tentative Tract Map 32780 August, 2005 Appendix B Vicjnity Map and Site Plan ~'O e e e Water Quality Management Plan (wQMP) Tentative Tract Map 32780 Appendix C Supporting Detail Related to Hydraulic: Conditions of Concern August, 2005 ~G"