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Home My WebLink AboutTract Map 3752 Lot 27 Temecula Medical Center WQMP 0("rW0 Project Specific Water Quality Management Plan • A Template for preparing Project Specific wQMPs for Priority Development Projects located within the Santa Margarita Region of Riverside County Project Title: TEMECULA MEDICAL OFFICE BUILDING Development No: LD15-0865 Design Review/Case No: PA 14-0107 MURR TA ' r • Contact Information: Warren Owen Prepared for: Temecula M.O.B., LLC P.O. Box 2248 ❑ Preliminary Orange,California 92859 ® Final Telephone: 714-981-2194 Original Date Prepared: September 3,2015 Prepared by: Michael Medofer, PE Medofer Engineering Inc. Revision Date(s):November 12,2015 28610 Midsummer Lane Menifee,CA 92584 Prepared for Compliance with Telephone: (909)816-5830 • Regional Board Order No. 119-2010-0016 Project Specific Water Quality Management Plan A Template for preparing Project Specific WQMPs for Priority Development Projects located within the Santa Margarita Region of Riverside County Project Title: TEMECULA MEDICAL OFFICE BUILDING Development No: LD15-0865 Design Review/Case No: PA 14-0107 T i ryxix*n I i Contact Information: Warren Owen Prepared for: Temecula M.O.B.,LLC P.O.Box 2248 ❑Preliminary Orange,California 92859 ® Final Telephone:714-981-2194 Original Date Prepared:September 3,2015 Prepared by: Michael Medofer, PE Medofer Engineering Inc. Revision Date(s): October 8,2015 28610 Midsummer Lane Menifee, CA 92584 Prepared for Compliance with Telephone:(909)816-5830 Regional Board Order No. R9-2030-0016 A Brief Introduction • The Municipal Separate Stormwater Sewer System (MS4) Permit' for the Santa Margarita Region (SMR) requires preparation of a Project-Specific Water Quality Management Plan (WQMP) for all Development Projects as defined in section F.l.d.(1) of the Permit. This Project-Specific WQMP Template for Development Projects in the Santa Margarita Region has been prepared to help document compliance and prepare a WQMP submittal. Below is a flowchart for the layout of this Template that will provide the steps required to document compliance. Section A Section B Section C -Project and Site Information •Optimize Site Utilization •Delineate Drainage •Identification of LID and Management Areas(DMAs) Hydromodification requirements,if any . i • Section F Section E Section D -Alternative Compliance(LID •Technical Feasibility •Technical Feasibility Waiver Program& •implement -implement LID BMPs Hydromodification) Hydromodi0wtlon BM Ps Section G Section H -Source Control BMPs •Operation,.Maintenance, and Funding • 'Order No.R9-2010-0016,NPDES No.CAS0108766,Waste Discharge Requirements for Discharges from the M54 Draining the County of Riverside,the Incorporated Cities of Riverside County,and the Riverside County Flood Control and Water Conservation District within the San Diego Region,California Regional Water Quality Control Board, November 10,2020. Water Quality Management Plan(WQMP) Temecula Medical Office Building • OWNER'S CERTIFICATION This Project-Specific WQMP has been prepared for Temecula M.O.B., LLC by Medofer Engineering Inc. for the Temecula Medical Office Building project. This WQMP is intended to comply with the requirements of The City of Temecula for Development Plan PA 14- 0107 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 and funding of this WQMP and will ensure that this WQMP is amended as appropriate to reflect up-to-date conditions on the site. In addition, the property owner accepts responsibility for interim operation and maintenance of Stormwater Best Management Practices until such time as this responsibility is formally transferred to a subsequent owner. 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 8.28.500). "I, the undersigned, certify under penalty of law that the provisions of this WQMP have been reviewed and accept and t WQMP will be transferred to future successors in interest." • December 16, 2015 Owner's Signature Date Warren L. Owens Managing Member Owners Printed Name Owner's Title/Position PREPARER'S CERTIFICATION "The selection, sizing and design of stormwater treatment and other stormwater quality and quantity control Best Management Practices in this plan meet the requirements of Regional Water Quality Control Board Order No. R9- 2010-0016 and any subsequent amendments thereto" Oecer4ke 119 Zo/S Preparer's Signature Date Mi4Hge,l A. Civi ir�ePf Preparer's Printed Name Preparer's Title/Pos) ion oQy,OFESSlO�,y � • c; m Preparer's Licensure: No.47804 Exp. r} -3- `t'l CIVO. FTFOF CALIFOP CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT CIVIL CODE§ 1189 A notary public or other officer completing this certificate verifies only the identity of the individual who signed the document to which this certificate is attached,and not the truthfulness,accuracy,or validity of that document. State of California ) County of p�J / On / 4 ZD/ before me, f/W/L�C, /^/. 1_14C/V3 Date Here Insert Name and Title of the dificer personally appeared . Name(s)of Signers) who proved to me on the basis of satisfactory evidence to be the persohM whose names) is/pee subscribed to the within instrument and acknowledged to me that he/sheAthery executed the same in his/hefkheG authorized capacity(ies),and that by his/herftheirsignalure(%on the instrument the person, or the entity upon behalf of which the person(a)acted, executed the instrument. I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph • is true and correct. MARK W.MASTERS WITNESS my hand and official seal. �TARV PUBLIC-CAIIFORNIA COMMISSION 21o3eSr i ORANGE COUNTY Signature -s' My Comm.E.P.APO 11;pate _ Signature o/ t Public Place Notary Seal Above OPTIONAL Though this section is optional, completing this information can deter alteration of the document or fraudulent reattachment of this form to an unintended document. Description of Attached Document Title or Type of Document: Document Date: Number of Pages: Signer(s) Other Than Named Above: Capacity(ies) Claimed by Signer(s) Signer's Name: Signer's Name: ❑Corporate Officer — Title(s): ❑Corporate Officer — Title(s): ❑Partner — ❑Limited ❑General ❑Partner — ❑Limited ❑General ❑Individual ❑Attorney in Fact ❑ Individual ❑Attorney in Fact ❑Trustee ❑Guardian or Conservator ❑Trustee ❑Guardian or Conservator ❑Other: ❑ Other. Signer Is Representing: Signer Is Representing: • 02014 National Notary Association •wvvw.NationalNotary.org • 1-800-US NOTARY(1-800-876-6827) Item 65907 • California All-Purpose Certificate of Acknowledgment A notary public or other officer completing this cedificale-verifies only the identity of the individual who signed the document to which this certificale is attached,and not the truthfulness, accuracy, or validity of that document. State of California County of S.S.- On before me, M )�I0tLl4ti,{ fK�v�IU A', I- - ' Name of Notary pmtt,Ttllo personally appeared M Ar • McGWw Name of Slgner(1) Name of sgner(2) who proved to me on the basis of satisfactory evidence to be the person(s)whose name(s) is/are subscribed to the Gvithin instrument and acknowledged to me that he/she/they executed the same in'his/heF,llheir authorized capacity(ies), and that by his/her/their signature(s) on the instrument the person(s), or the entity upon behalf of which the person(s) acted, executed the l instrument. certify under PENALTY OF PERJURY under the law of the State of California that the foregoing paragraph i AMY M.BROWN Cefn true and correct. maaelon a 2000992 i • Notary Public-,California = WITNESS my hand and official seal. = Riverside County • Comm.Expires Dec 14,2016 t — SIgridwe of Notary Public .. seal 11 OPTIONAL INFORMATION Although the information in this section is not required by law. it could prevent fraudulent removal end reallachment of this acknowledgment loan unauthorized document find may pmvo useful to persons relying on the atlachod dorument. Description of Attached Document The preoeding Certificate of Acknowledgment is attached to a Method of Signer Identification document titled/for the purpose o/ff'' Proved to me on,me basis or satisfactory evidence: WVYLP.I'� �Y1T-T1(Jtif)�1�. VItomWofidenlifiwtion ❑credible wltness(es) containing 3 pages,and dated 12-11-2UI S Notarial event is detailed br rgla. ryjoumal on: The signer(s)capacity or authority(stare as: ?�a— Entry p— Sllnlm4dlral(s) Notary contact . ❑ Aturneyii-fad ❑ Cap(1rafe0f5rx1(s) Omer Two) ❑Additional signer ❑ S 4rrer(a)ihtanbpxds(a) ❑ GtmdaYColtservalor ❑ ❑ Partner-LYnmed(General ❑ Tmd*s) ❑ other: representing: 0 2009-2015l fib ry Leemxg Center-All Rob Reserved You mo pmirax copies of 0ds form from curreD sl,e at swwvTheNoterysstore.00m Water Quality Management Plan(WQMP) Temecula Medical Office Building • Table of Contents Section A: Project and Site Information........................................................................................................6 A.1 Maps and Site Plans............................................................................................................................6 A.2 Identify Receiving Waters...................................................................................................................7 A.3 Drainage System Susceptibility to Hydromodification........................................................................7 A.4 Additional Permits/Approvals required for the Project:.....................................................................8 Section B: Optimize Site Utilization (LID Principles)......................................................................................9 Section C: Delineate Drainage Management Areas(DMAs).......................................................................SO Section D: Implement LID BMPs..................................................................................................................12 D.1 Infiltration Applicability ....................................................................................................................12 D.2 Harvest and Use Assessment............................................................................................................14 D.3 Bioretention and Biotreatment Assessment ....................................................................................16 D.4 Other Limiting Geotechnical Conditions...........................................................................................17 D.5 Feasibility Assessment Summaries...................................................................................................17 D.6 LID BMP Sizing...................................................................................................................................18 Section E: Implement Hydrologic Control BMPs and Sediment Supply BMPs............................................19 E.1 Onsite Feasibility of Hydrologic Control BMPs..................................................................................19 • E.2 Meeting the HMP Performance Standard for Small Project Sites.....................................................19 E.3 Hydrologic Control BMP Selection ....................................................................................................20 E.4 Hydrologic Control BMP Sizing..........................................................................................................21 E.5 Implement Sediment Supply BMPs...................................................................................................21 Section F: Alternative Compliance..............................................................................................................25 F.1 Identify Pollutants of Concern...........................................................................................................27 F.2 Stormwater Credits ...........................................................................................................................28 F.3 Sizing Criteria.....................................................................................................................................28 F.4 Treatment Control BMP Selection.....................................................................................................29 F.5 Hydrologic Performance Standard—Alternative Compliance Approach..........................................29 F.6 Sediment Supply Performance Standard -Alternative Compliance..................................................30 Section G: Source Control BMPs.................................................................................................................31 Section H: Construction Plan Checklist .......................................................................................................32 Section I: Operation, Maintenance and Funding........................................................................................33 Acronyms, Abbreviations and Definitions...................................................................................................34 • -4 - Water Quality Management Plan (WQMP) Temecula Medical Office Building • List of Tables Table A.1 Identification of Receiving Waters................................................................................................7 Table A.2 Identification of Susceptibility to Hydromodification...................................................................8 Table A.3 Other Applicable Permits..............................................................................................................8 Table C.1 DMA Classifications.....................................................................................................................10 Table C.2 Type 'A', Self-Treating Areas.......................................................................................................10 Table C.3 Type'B', Self-Retaining Areas......................................................................................................10 Table CA Type'C',Areas that Drain to Self-Retaining Areas......................................................................11 Table C.5 Type'D', Areas Draining to BMPs................................................................................................11 Table D.1 Infiltration Feasibility..................................................................................................................12 Table D.2 Geotechnical Concerns for Onsite Retention Table....................................................................17 Table D.3 LID Prioritization Summary Matrix..............................................................................................17 Table DA DCV Calculations for LID BMPs....................................................................................................18 TableD.5 LID BMP Sizing.............................................................................................................................18 Table E.1 LID & Hydro modification BMP Location......................................................................................20 Table E.2 Hydrologic Control BMP Sizing....................................................................................................21 Table F.1 Potential Pollutants by Land Use Type........................................................................................27 • Table F.2 Stormwater Credits......................................................................................................................28 Table F.3 Treatment Control BMP Sizing.....................................................................................................28 Table F.4 Treatment Control BMP Selection...............................................................................................29 Table F.5 Offsite Hydrologic Control BMP Sizing.........................................................................................30 Table G.1 Structural and Operational Source Control BMP........................................................................31 Table H.1 Construction Plan Cross-reference .............................................................................................32 List of Appendices Appendix 1: Maps and Site Plans................................................................................................................41 Appendix2: Construction Plans..................................................................................................................42 Appendix3: Soils Information.....................................................................................................................43 Appendix 4: Historical Site Conditions........................................................................................................44 Appendix5: LID Infeasibility........................................................................................................................45 Appendix6: BMP Design Details.................................................................................................................46 Appendix 7: Hydromodification..................................................................................................................47 Appendix8: Source Control.........................................................................................................................48 • Appendix 9: O&M........................................................................................................................................49 Appendix 10: Educational Materials...........................................................................................................43 -5 - Water Quality Management Plan (WQMP). Temecula Medical Office Building Section A: Project and Site Information PROJECT INFORMATION Type of Project: Commercial Planning Area: Southwest Area Plan Community Name: City of Temecula Development Name: n/a PROJECT LOCATION Latitude&Longitude(DMS):33.4831,-117.1041 Project Watershed and Sub-Watershed:'Santa Margarita(HU 902)Watershed Temecula Creek(HAS 2.51)Sub-Watershed APN(s):959-080-035 Map Book and Page No.:Page 979,Grid E2 PROJECT CHARACTERISTICS Proposed or potential land use(s) Professional Office Building Proposed or Potential SIC Codes) 8011 - Offices of Medical Doctors • Area of Impervious Project Footprint(SF) 63,209 Total area of proposed Impervious Surfaces within the Project Limits(SF)/or-Replacement 63,209 Total Project Area(ac) 2.01 Does the project consist of offsite road improvements? ❑Y ®N .- Does the project propose to construct unpaved roads? ❑Y ®N Is the project part of a larger common plan of development(phased project)? ❑Y ®N. Is the project exempt from_HMP Performance Standards? ❑Y ®N. ExISTING SITE CHARACTERISTICS - - - - -_-_ _-- -- - - -- --- ---- ----_-_- - Total area of existing Impervious Surfaces within the project limits(SF) 0 Is the project located within any Multi-Species Habitat Conservation Plan (MSHCP Criteria ❑Y ® N Cell? If so,identify the Cell number: N/A Are there any natural hydrologic features on the project site? ❑Y ® N Is a Geotechnical Report attached? ®Y ❑ N If no Geotech. Report, list the Natural Resources Conservation Service (NRCS) soils type(s) B present on the site(A, B,C and/or D) What is the Water Quality Design Storm Depth for the project? 0.97 in. A.1 Maps and Site Plans When completing your Project-Specific WQMP, include a map of the Project vicinity and existing site. In addition, include all grading,drainage, landscape/plant palette and other pertinent construction plans in Appendix 2. At a minimum,your WQMP Site Plan should include the following: • • Drainage Management Areas (DMAs) • Source Control BMPs -6- Water Quality Management Plan (WQMP) Temecula Medical Office Building • • Proposed Structural Best Management • Buildings, Roof Lines, Downspouts Practices (BMPs) • Impervious Surfaces • Drainage Path • Standard Labeling • Drainage infrastructure,.inlets,overflows Use your discretion on whether or not you may need to create multiple sheets or can appropriately accommodate these features on one or two sheets. Keep in mind that the Copermittee plan reviewer must be able to easily analyze your Project utilizing this template and its associated site plans and maps. A.2 Identify Receiving Waters Using Table A.1 below, list in order of upstream to downstream, the Receiving Waters that the Project site is tributary to. Continue to fill each row with the Receiving Water's 303(d) listed impairments(if any), designated Beneficial Uses, and proximity, if any, to a RARE Beneficial Use. Include a map of the Receiving Waters in Appendix 1. (h[tn//muw waterhoardcca.env/.rmidiegn/water issugs/J2 rogram.dbosinplan/) TableA.1 Identification of Receiving Waters USEPA Approved Designated Receiving Waters 303(d) List Beneficial Uses Proximity to RARE Beneficial Use Impairments Temecula Creek(HSA Chlorpyrifos,Copper, MUN,AGR,IND,PROC,GWR,RECI,REC2,W Not a RARE waterbody(approximately 2.51,2.52) Phosphorus,Total ARM,WILD 0.5 miles from site) Dissolved Solids,Toxicity • Santa Margarita River- MUN,AGR,IND,RECI,REC2,WARM,COLD, RARE waterbody(approximately 2.2 Upper portion(HSA Phosphorus,Toxicity WILD,RARE miles from site) 2.22,2.21) Santa Margarita River- Enterococcus,Fecal MUN,AGR,IND,PROC,RECI,REC2,WARM, RARE waterbody(approximately 15.7 Lower portion(HSA; Coliform,Phosphorus, COLD,WILD,RARE miles from the site) 2.13,2.12,2.11) Total Nitrogen Santa Margarita Lagoon - RECI,REC2,EST, RARE waterbody(approximately 23.2 (HSA 2.11) Eutrophic WILD,RARE,MAR,MIGR,SPWN miles from the site) Pacific Ocean Not Listed on Region 9 IND,NAV,RECI,REC2,COMM,BIOL,WILD,R RARE waterbody(approximately 25.0 List of Impairments ARE,MAR,AQUA,MIGR,SPWN,SH ELL total miles from the site) A.3 Drainage System Susceptibility to Hydromodification Using Table A.2 below, list in order of the point of discharge at the project site down to the Santa Margarita River, each drainage system or receiving water that the project site is tributary to. Continue to fill each row with the material of the drainage system, the storm drain susceptibility using the SWCT2 (Stormwater & Water Conservation Tracking Tool - http://rivco.permitrack.com/) or Map 2 of the Hydromodification Susceptibility Documentation Report and Mapping:Santa Margarita Region (Appendix D of the SMR HMP),and the condition for exempting the drainage system, if applicable. If the exemption includes receiving waters that were not evaluated • in Appendix D, provide supporting documentation in Appendix 7 to demonstrate that they classify as Engineered, Fully Hardened and Maintained (EFHM) channels, consistent with the definition provided in Appendix D. Include a map exhibiting each drainage system and the associated susceptibility in Appendix 1. -7- Water Quality Management Plan (WQMP) Temecula Medical Office Building • Table A.2 Identification of Susceptibility to Hydromodification Drainage System Drainage System Material Susceptibility of Drainage Hydromodification System Exemption Storm Drain Assumed RCP and Concrete Catch Not known None Collection System Basins Temecula Creek Natural Stream bed Not Susceptible None A.4 Additional Permits/Approvals required for the Project: Table A.30ther Applicable Permits Agency Permit Required State Department of Fish and Game, 1602 Streambed Alteration Agreement ❑Y ® N State Water Resources Control Board, Clean Water Act Section 401 Water Quality ❑Y ® N Certification US Army Corps of Engineers,Clean Water Act Section 404 Permit ❑Y ® N US Fish and Wildlife, Endangered Species Act Section 7 Biological Opinion ❑Y ® N • Statewide Construction General Permit Coverage ®Y ❑N. Statewide Industrial General Permit Coverage ❑Y ®N Western Riverside MSHCP Consistency Approval(e.g.,JPR, DBESP) ❑Y ®N Other(please list in the space below as required) City of Temecula Grading Permit ®Y N❑ If yes is answered to any of the questions above, the Copermittee may require proof of approval/coverage from those agencies as applicable including documentation of any associated requirements that may affect this Project-Specific WQMP. • -8- Water Quality Management Plan(WQMP) Temecula Medical Office Building Section B: Optimize Site Utilization (LID Principles) Review of the information collected in Section 'A' will aid in identifying the principal constraints on site design and selection of LID BMPs as well as opportunities to reduce imperviousness and incorporate LID Principles into the site and landscape design. For example, constraints might include impermeable soils, high groundwater, groundwater pollution or contaminated soils, steep slopes, geotechnical instability, high-intensity land use, heavy pedestrian or vehicular traffic, utility locations or safety concerns. Opportunities might include existing natural areas, low areas, oddly configured or otherwise unbuildable parcels, easements and landscape amenities including open space and buffers (which can double as locations for LID Bioretention BMPs), and differences in elevation (which can provide hydraulic head). Prepare a brief narrative for each of the site optimization strategies described below. This narrative will help you as you proceed with your Low Impact Development (LID) design and explain your design decisions to others. The 2010 SMR MS4 Permit further requires that LID Retention BMPs (Infiltration Only or Harvest and Use) be used unless it can be shown that those BMPs are infeasible. Therefore, it is important that your narrative identify and justify if there are any constraints that would prevent the use of those categories of LID BMPs. Similarly, you should also note opportunities that exist which will be utilized during project design. Upon completion of identifying Constraints and Opportunities, include these on your WQMP Site plan in Appendix 1. Site Optimization • The following questions are based upon Section 3.2 of the WQMP Guidance Document. Review of the WQMP Guidance Document will help you determine how best to optimize your site and subsequently identify opportunities and/or constraints,and document compliance. Did you identify and preserve existing drainage patterns? If so, how? If not, why? Site was previously graded and developed as a ranch style residence. Present drainage patterns are preserved to the extent possible. Did you identify and protect existing vegetation? If so, how? If not, why? Site was previously developed and landscaped. Present vegetation is protected to the extent possible. Did you identify and preserve natural infiltration capacity? If so, how? If not,why? Natural infiltration capacity is preserved to the extent possible. Did you identify and minimize impervious area? If so, how? If not, why? Site is developed with minimum amount of impervious paving and hardscape as allowed by City development code. Did you identify and disperse runoff to adjacent pervious areas? If so, how? If not,why? • Site impervious areas drain into pervious landscape areas and bioretention basin before leaving the site. -9- Water Quality Management Plan(WQMP) Temecula Medical Office Building Section C: Delineate Drainage Management Areas (DMAs) Utilizing the procedure in Section 3.3 of the WQMP Guidance Document which discusses the methods of delineating and mapping your project site into individual DMAs, complete Table CA below to appropriately categorize the types of classification (e.g., Type A, Type B, etc.) per DMA for your Project site. Upon completion of this table, this information will then be used to populate and tabulate the corresponding tables for their respective DMA classifications. Table CA DMA Classifications DMA Name or surface Type(s)' Area(Sq.Ft.) DMA Type Identification DMAI Concrete,asphalt,landscape 43,702 Type'D'Areas draining to BMPs DMA2 Rooftop,concrete,asphalt,landscape 29,622 Type'D'Areas draining to BMPs DMA3 Rooftop,concrete,asphalt,landscape 14,166 Type'D'Areas draining to BMPs 'Reference Table 1-1 in the WDMP Guidance Document to populate this column Table C.2 Type W,Self-Treating Areas DMA Name or Identification Area(Sq.Ft.) Stabilization Type Irrigation Type(if any) N/A • Tattle C.3 Type V,.Self-Retaining Areas Self-Retaining Area Type 'C' DMAs that are draining to the Self-Retaining Area Area Storm (square Depth [C]from Table Required Retention Depth DMA post-project feet) (inches) CA = (inches) Name/ID surface type IAI IBI DMA Name/ID (C) IDI N/A [o] _ [B] + [B1 • [c] [A] - 10- Water Quality Management Plan (WQMP) Temecula Medical Office Building •. Table CA Type'C',Areas that Drain to Self-Retaining Areas DMA Receiving Self-Retaining DMA o v a a y y d > o 0 C , z a ? u z' =° Area(square Product fee[) Ratio � a IA) [B) (C)_(A)x[BI DMA name/ID (D) [C)/[D) N/A Note:(See Section 3.3 of WQMP Guidance Document)Ensure that partially pervious areas draining to a self-Retaining area do not exceed the following ratio: r 2 l 1 \Impervious Fraction/ • - (Tributary Area:Self-Retaining Area) Table C.5 Type'D',Areas Draining to BMPs DMA Name or ID BMP Name or ID DMA1 BMP3—Bloretention Basin DMA2 BMP2—Infiltration Trench DMA3 BMP3—Infiltration Trench • - 11 - Water Quality Management Plan (WQMP) Temecula Medical Office Building Section D: Implement LID BMPs D.1 Infiltration Applicability An assessment of the feasibility of utilizing Infiltration BMPs is required for all projects, except in the following case: ❑ Harvest and Use BMPs will be implemented to address the Design Capture Volume (see the Harvest and Use Assessment below) for all Drainage Management Areas AND the project is exempt from HMP Performance Standards (Proceed to Section D.2 and Section E). If the above box remains unchecked, perform a site-specific evaluation of the feasibility of Infiltration BMPs using each of the applicable criteria identified in Chapter 3.4.1 of the WQMP Guidance Document and complete the remainder of Section D.1. Is there an infiltration concern (see discussion in Chapter 2.3.4 of the WQMP Guidance Document for further details)? ❑Y ON If yes has been checked, both Infiltration BMPs and Hydrologic Control BMPs that include an infiltration functionalities may not be feasible for the site. It is recommended that you contact your Copermittee to verify whether or not infiltration within the Project is infeasible. Runoff from impervious areas will drain into two infiltration trenches and one bioretention basin that will include an approximately 2 foot thick layer of select plantable filter material. Storm flows will accumulate in the bioretention basin will discharge Into the existing 72"Storm drain pipe in Margarita • Road by means of a drop inlet and 12" PVC pipe sized to handle the 300-year storm event flow. Geotechnical Report A Geotechnical Report or Phase I Environmental Site Assessment may be required by the Copermittee to confirm present and.past site characteristics that may affect the use of Infiltration BMPs. In addition, the Copermittee, at their discretion, may not require a geotechnical report for small projects as'described in Chapter 2 of the WQMP Guidance Document. If a geotechnical report has been prepared, include it in Appendix 3. In addition, if a Phase I Environmental Site Assessment has been prepared, include it in Appendix 4. Is this project classified as a small project consistent with the requirements of Chapter 2 of the WQMP Guidance Document?❑Y ® N Infiltration Feasibility Table DA below is meant to provide a simple means of assessing which DIVAS on your site support Infiltration BMPs and is discussed in the WQMP Guidance Document .in Chapter 2.3.4. Check the appropriate box for each question and then list affected DIVAS as applicable. If additional space is needed, add a row below the corresponding answer. Table DA Infiltration Feasibility Does the project site... YES No ...have any DMAs with a seasonal high groundwater mark shallower than 10 feet? x If Yes,list affected DMAs: • ...have any DMAs located within 100 feet of a water supply well? x If Yes,list affected DMAs: ...have any areas identified by the geotechnical report as posing a public safety risk where infiltration of x - 12 - - Water Quality Management Plan(WQMP) Temecula Medical Office Building • stormwater could have a negative impact? If Yes,list affected DMAs: ...have measured in-situ infiltration rates of less than 1.6 inches/hour? x If Yes,list affected DMAs: ...have significant cut and/or fill conditions that would preclude in-situ testing of infiltration rates at the final X infiltration surface? If Yes,list affected DMAs: ...have any contaminated groundwater plume in the vicinity of the site? i % If Yes,list affected DMAs: ...geotechnical report identifies other site-specific factors that would preclude effective and safe infiltration? X Describe here: If you answered "Yes" to any of the questions above for any DMA, Infiltration BMPs should not be used for those DMAs and you.should proceed to the assessment for Harvest and Use below. • • - 13 - Water Quality Management Plan (WQMP) Temecula Medical Office Building DZ Harvest and Use Assessment Please check what applies: X Reclaimed water will be used for the non-potable water demands for the Project. ❑Downstream water rights may be impacted by Harvest and Use as approved by the Regional Board (verify with the Copermittee). ❑The Design Capture Volume (DCV) will be addressed using Infiltration Only BMPs. In such a case, Harvest and Use BMPs are still encouraged, but it would not be required if the DCV will be infiltrated or evapotranspired. If any of the above,boxes have been checked, Harvest and Use BMPs need not be assessed for the site. If neither of the above criteria applies, follow the steps below to assess the feasibility of irrigation use, toilet.use and other non-potable uses(e.g., industrial use). Irrigation Use_Feasibility Complete the following steps to determine the feasibility of harvestingstormwater runoff for Irrigation Use BMPs on your site: Step 1: Identify the total area of irrigated landscape on the site, and the type of landscaping used. Total Area of Irrigated Landscape: Insert Area (Acres) • Type of Landscaping (Conservation Design or Active Turf): List Landscaping Type Step 2: Identify the planned total of all impervious areas on the proposed project from which runoff might be feasibly captured_and stored for irrigation use. Depending on the configuration of buildings and other impervious areas on the site, you may consider the site as a whole, or parts of the site, to evaluate reasonable scenarios for capturing and storing runoff and directing the stored runoff to the potential use(s) identified in Step 1 above. Total Area of Impervious Surfaces: Insert Area (Acres) Step 3: Cross reference the Design Storm depth for the project site (see Exhibit A of the WQMP Guidance Document) with the left column of Table 2-4 in Chapter 2 to determine the minimum area of Effective Irrigated Area per Tributary Impervious Area (EIATIA). Enter your EIATIA factor: EIATIA Factor Step 4: Multiply the unit value obtained from Step 3 by the total of impervious areas from Step 2 to develop the minimum irrigated area that would be required. Minimum required irrigated area: Insert Area (Acres) Step 5: Determine if harvesting stormwater runoff for irrigation use is feasible for the project by comparing the total area of irrigated landscape (Step 1) to the minimum required irrigated area (Step 4). • Minlmum required irrigated area (Step 4) Available Irrigated Landscape(Step 1) Insert Area (Acres) Insert Area (Acres) - 14- Water Quality Management Plan (WQMP) Temecula Medical Office Building • Toilet Use Feasibility Complete the following steps to determine the feasibility of harvesting stormwater runoff for toilet flushing uses on your site: Step 1: Identify the projected total number of daily toilet users during the wet season, and account for any periodic shut downs or other lapses in occupancy: Projected Number of Daily Toilet Users: Number of daily Toilet Users Project Type:Enter'Residential', 'Commercial', 'Industrial'or 'Schools' Step 2: Identify the planned total of all impervious areas on the proposed Project from which runoff might be feasibly captured and stored for toilet use. Depending on the configuration of buildings and other impervious areas on the site, you may consider the Project site as a whole, or parts of the site, to evaluate reasonable scenarios for capturing and storing runoff and directing the stored runoff to the potential use(s)identified in Step 1 above. Total Area of Impervious 5urfaces: Insert Area(Acres) Step 3: Enter the Design Storm depth for the project site (see Exhibit A) into the left column of Table 2-3 in Chapter 2 to determine the minimum number or toilet users per tributary impervious acre (TUTIA). Enter your TUTIA factor: TUTIA Factor • Step 4: Multiply the unit value obtained from Step 3 by the total of impervious areas from Step 2 to develop the minimum number of toilet users that would be required. Minimum number of toilet users:Required number of toilet users Step 5: Determine if-harvesting stormwater runoff for toilet Flushing use is feasible for the Project by comparing the Number of Daily Toilet Users (Step 1) to the minimum required number of toilet users(Step 4). Minimum required Toilet Users(Step 4) I Projected number of toilet users(Step 1) Insert Area (Acres) Insert Area (Acres) Other Non-Potable Use Feasibility Are there other non-potable uses for stormwater runoff on the site (e.g. industrial use)? See Chapter 2 of the Guidance for further information. If yes, describe below. If no, write N/A. Insert narrative description here. Step 1: Identify the projected average daily non-potable demand, in gallons per day, during the Wet Season and accounting for any periodic shut downs or other lapses in occupancy or operation. Average Daily Demand:Projected Average Daily Use (gpd) • Step 2: Identify the planned total of all impervious areas on the proposed Project from which runoff might be feasibly captured and stored for the identified non-potable use. Depending on the configuration of buildings and other impervious areas on the site, you may consider the - 15- Water Quality Management Plan (WQMP) Temecula Medical Office Building • Project site as a whole, or parts of the site, to evaluate reasonable scenarios for capturing and storing runoff and directing the stored runoff to the potential use(s) identified in Step 1 above. Total Area of Impervious Surfaces:Insert Area(Acres) Step 3: Enter the Design Storm Depth for the Project site (see Exhibit A) into the left column of Table 2-5 in Chapter 2 to determine the minimum demand for non-potable uses of stormwater runoff per tributary impervious acre. Enter the factor from Table 2-3:Enter Value Step 4: Multiply the unit value obtained from Step 4 by the total of impervious areas from Step 3 to develop the minimum gpd of non-potable use that would be required. Minimum required use: Minimum use required(gpd) Step 5: Determine if harvesting stormwater runoff for other non-potable use is feasible for the Project by comparing the Number of Daily Toilet Users (Step 1) to the minimum required number of toilet users(Step 4). Minimum required non-potable use(Step 4) I Projected average daily use(Step 1) Minimum use required (gpd) Projected Average Daily Use (gpd) If Irrigation, Toilet and Other Use feasibility anticipated demands are less than the applicable minimum values, Harvest and Use BMPs are not required,and you should proceed to utilize LID Bioretention and Biotreatment BMPs, unless a site-specific analysis has been completed that demonstrates technical infeasibility as noted in D.3 below. D.3 Bioretention and Biotreatment Assessment Other LID Bioretention and Biotreatment BMPs as described in Chapter 2.3 of the WQMP Guidance Document are feasible on nearly all development sites with sufficient advance planning. Select one of the following: X LID Bioretention/Biotreatment BMPs will be used for some or all DMAs of the Project as noted below in Section DA ❑ A site-specific analysis demonstrating the technical infeasibility of all LID BMPs has been performed and is included in Appendix 5. If you plan to submit an analysis demonstrating the technical infeasibility of LID BMPs, request a pre-submittal meeting with the Copermittee with jurisdiction over the Project site to discuss this option. Proceed to Section E to document your alternative compliance measures. • - 16- Water Quality Management_Plan(WQMP) Temecula Medical Office Building D.4 Other Limiting Geotechnical Conditions Onsite retention may not be feasible due to specific geotechnical concerns identified in the Geotechnical Report. If any,describe below. If no, write N/A: N/A Table D.2 Geotechnical Concerns for Onsite Retention Table Type of Geotechnical Concern DMAs Feasible(By Name or ID) DMAs Infeasible(By Name or ID) Collapsible Soil Expansive Soil Slopes - Liquefaction Other . D.5 Feasibility Assessment Summaries From the Infiltration, Harvest and Use, Bioretention and Biotreatment Sections above, complete Table D.3 below to summarize which LID BMPs are technically feasible, and which are not, based upon the established hierarchy. Table D.3 LID Prioritization Summary Matrix LID BMP Hierarchy No LID • DMA (Alternative Name/ID 1. Infiltration 2. Harvestanduse 3. Bioretention 4. Biotreatment Compliance( DMA1 El ® ❑ DMA2 DMA3 Li F= 1-1 LT I E For those DMAs where LID BMPs are not feasible, provide a brief narrative below summarizing why they are not feasible, include your technical infeasibility criteria in Appendix 5, and proceed to Section E below to document Alternative Compliance measures for those DMAs. Recall that each proposed DMA must pass through the LID BMP hierarchy before alternative compliance measures may be considered. Infiltration trenches and a bioretention basin is proposed to treat the design capture volume that will infiltrate Into the existing subsurface soils - 17- Water Quality Management Plan(WQMP) Temecula Medical Office Building 40 D.6 LID BMP Sizing Each LID BMP must be designed to ensure that the DCV will be addressed by the selected BMPs. First, calculate the DCV for each LID BMP using the Vamp worksheet in Appendix F of the LID BMP Design Handbook. Second, design the LID BMP to meet the required VBMP using a method approved by the Copermittee with jurisdiction over the Project site. Utilize the worksheets found in the LID BMP Design Handbook or consult with the Copermittee to assist you in correctly sizing your LID BMPs. Complete Table D.4 below to document the DCV and the Proposed Volume for each LID BMP. Provide the completed design procedure sheets for each LID BMP in Appendix 6.You may add additional rows to the table below as needed. Table DA DCV Calculations for LID BMPs Post- DMA - DMA Project Effective DMA Areas x DMA (square Surface Impervious Runoff Runoff Enter BMP Nome/Identifier Here Type/ID feet) Type Fraction,If Factor Factor [A] 181 [C] [A] x[C] DMA 1 43,702 MIXED 0.79 0.59 25,784 1 DMA 2 29,621 MIXED 0.78 1 0.58 17,180 DMA 3 14,166 MIXED 0.57 0.39 5,525 Proposed Design Volume • Storm on Plans Depth DCV,VBMP (cubic (in) (cubicfeet) feet) I 87,489 48,489 0.97 3,920 6,366 [e],[C]is obtained as described in Section 2.5 of the WQMP Guidance Document [E]is obtained from Exhibit A in the WQMP Guidance Document [G]is obtained from a design procedure sheet,such as in LID BMP Design Handbook and placed in Appendix 6 Each LID BMP must be designed to ensure that the Design Capture Volume (DCV)will be addressed by the selected BMPs. First,calculate the Design Capture Volume for each LID BMP using the'VBMP worksheet in Appendix F of the LID BMP Design Handbook. Second,design the LID BMP to meet the required Vamp using a method approved by the Copermittee. Utilize the worksheets found in the LID BMP Design Handbook or consult with your Copermittee.Complete Table D.5 below to document the Design Capture Volume and the Proposed Volume for each LID BMP.You can add rows to the table as needed.Alternatively,the Santa Margarita Hydrology Mode[ (SMRHM)can be used to size LID BMPs to address the DCV and, if applicable,to size Hydrologic Control BMPs to meet the Hydrologic Performance Standard of the SMR HMP, as identified in Section E. BMP Name/ DMA No. BMP Type/Description Design Capture Proposed Volume ID Volume (ft3) (ft3) BMP 1 1 Bioretention Basin 2,069 4,035 • BMP2 2 Infiltration Trench 1,382 1,401 BMP3 3 Infiltration Trench 455 930 - 18- Water Quality Management Plan (WQMP) Temecula Medical Office Building Section E: Implement Hydrologic Control BMPs and Sediment Supply BMPs If a completed Table A.2 demonstrates that the project is exempt from HMP Performance Standards, specify N/A of proceed to Section F, if applicable, and Section G. EA Onsite Feasibility of Hydrologic Control BMPs An assessment of the feasibility of implementing onsite Hydrologic Control BMPs is required for all projects. Select one of the following: X Yes—The implementation.of Hydrologic Control BMPs is feasible onsite. (Proceed to Step E.3 and Step E.4) - Or - No—The project site is larger than one acre and the implementation of Hydrologic Control BMPs is not feasible onsite. (Proceed to Step E.5 and Step F for'Alternative Compliance upon approval of the Technical Feasibility Assessment by the Copermittee) ❑ No — The project site is smaller than one acre and the implementation of Hydrologic Control • BMPs is not feasible onsite. (Proceed to Step E.2) If the reasons-for infeasibility are different from those listed in Section D.1, describe the technical or spatial reasons that preclude the implementation of onsite Hydrologic Control BMPs. If none, write N/A: Insert narrative description here. Approval of the condition for infeasibility, if any, is required by the Copermittee. Has the condition for infeasibility been approved by the Copermittee? ®Y ❑ N ❑ N/A E.2 Meeting the HMP Performance Standard for Small Project Sites Select one of the following: Yes—The project site is equal to or larger than one acre. (Proceed to Step E.3, Step E.4, and Step E.5) - Or - No—The project site is less than one acre. (Follow the remainder of Step E.2) Only a Simplified Technical Feasibility Study is required from the applicant. Complete the Simplified Technical Feasibility Study in Appendix 7, which must include, at a minimum, the soil conditions at the • PDP, a demonstration of the lack of available space for onsite Hydrologic Control BMPs, an explanation of prohibitive costs to implement Hydrologic Control BMPs, and a written opinion from a Registered Geotechnical Engineer identifying the infeasibility due to geotechnical concerns. - 19- Water Quality Management Plan (WQMP) Temecula Medical Office Building • Select one of the following: ❑ Yes—Onsite Hydrologic Control BMPs are feasible. (Proceed to Step E., Step E.4, and Step E.S) Or - ❑ No — Onsite Hydrologic Control BMPs are not feasible per the Simplified Technical Feasibility Study. (Proceed to Section E.5 for Sediment Supply Performance Standard and Section F for Alternative Compliance) E.3 Hydrologic Control BMP.Selection Capture of the DCV and achievement of the Hydrologic Performance Standard may be met by combined and/or separate structural BMPs. Similarly, compliance with the two identified requirements may be fully or partially achieved onsite. For each DMA, identify in Table EA if the DCV is fully or partially captured onsite, if the Hydrologic Performance Standard is fully or partially met onsite (by using the SMRHM identified in Step E.4), and if structural BMPs for compliance with the LID requirement and the Hydrologic Performance Standard are combined. Table EA LID&Hydronnodlfication BMP Location ' • DMA LID BMP Hydrologic Control Combined BMP BMP BMP type and ID ®Onsite ®Onsite ❑ Partially Onsite ❑Partially Onsite ®Yes BMP 1—Onsite Bioretention Basin, with DMA3 ❑Offsite Offsite No infiltration and detention of storm ❑ ❑ flows. ❑ None Required ❑None Required ®Onsite ®Onsite BMP 2 - Onsite Filter..Trench, with ❑ ❑ Partially Onsite Partially Onsite ❑Yes infiltration. Storm flows will route to DMA2 ❑Offsite ❑Offsite ❑ None Required ® No the bioretention basin (BMP 1), with ❑ None Required detention of storm flows. ®Onsite ®Onsite BMP 3 - Onsite Filter Trench, with El Partially Onsite ❑ Partially Onsite ❑Yes infiltration. Storm flows will route to DMA3 ❑Offsite ❑Offsite ❑None Required ® No the bioretention basin (BMP 1), with ❑ None Required detention of storm flows. For each DMA provide a narrative describing if the DCV and the Hydrologic Performance Standard are to be fully managed onsite. If not, the narrative should detail how and where offsite structural BMPs will achieve management of the DCV and the Hydrologic Performance Standard. • DMA 1 — The DCV and hydrologic performance standard will be managed onsite. The Onsite Bioretention Basin (BMP 1)will capture and treat the design control volume. The design storm flows will - 20- Water Quality Management Plan (WQMP) Temecula Medical Office Building • pond in the basin and the outlet flow amount will be controlled by the capacity of the drop inlet and 12" PVC pipe. DMA 2 - The DCV and hydrologic,performance standard will be managed onsite. The filter trench will treat the DCV and flows will infiltrate into the ground. During major storms, the runoff will flow by subsurface pipe and surface.flow into the bioretention basin at the south end of the site. The design storm flows will pond in the basin and the outlet flow amount will be controlled by the capacity of the drop inlet and 12" PVC pipe. DMA 2 - The DCV and hydrologic performance standard will be managed onsite. The filter trench will treat the DCV and flows will infiltrate into the ground. During major storms, the runoff will flow by subsurface pipe and surface flow into the bioretention basin at the south end of the site. The design storm flows will pond in the basin and the outlet flow amount will be controlled by the capacity of the drop inlet and 12" PVC pipe. EA Hydrologic Control BMP Sizing Each Hydrologic Control BMP must be designed to ensure that the flow duration curve of the post- development DMA will not exceed that of the pre-existing, naturally occurring, DMA by more than ten percent over a one-year period. Using SMRHM, the applicant shall demonstrate that the performance of each designed Hydrologic Control BMP complies with the Hydrologic Performance Standard. Complete Table E.2 below and identify, for each DMA, the type of Hydrologic Control BMP; if the SMRHM model confirmed the management (identified as "passed" in SMRHM), the total volume capacity of the Hydrologic Control BMP,the Hydrologic Control BMP footprint at top floor elevation, and the drawdown • time of the Hydrologic Control BMP. SMRHM summary reports should be documented in Appendix 7. Refer to the SMRHM Guidance Document for additional information on SMRHM. You can add rows to the table as needed. Table E.2 Hydrologic Control BMP Sizing BMP DMA BMP Type/Description SMRHM BMP Volume BMP Drawdown Name/ ID No. Passed I (ac-ft) Footprint (ac) time(hr) BMP1 1 Bioretention Basin 0.093 0.0671 48 hr. max. BMP2 2 Filter Trench 0.032 0.0292 72 hr. max. BMP3 3 Filter Trench 0.021 0.009 72 hr. max. E.5 Implement Sediment Supply BMPs The applicant may refer to Section 2.3 of the SMR HMP for a comprehensive description of the methodology to meet the Sediment Supply Performance Standard. Complete the following steps to determine compliance with the Sediment Supply Performance Standard: Step 1: Identify if the site is a Significant Source of Bed Sediment Supply to the receiving channel There are no onsite streams within this project. • X Step 1.A—Is the Bed Sediment of onsite streams similar to that of receiving streams? Rate the similarity: ❑ High - 21 - Water Quality Management Plan(WQMP) Temecula Medical Office Building • ❑ Medium ® Low Results from the geotechnical and sieve analysis to be performed both onsite and in the receiving channel should be documented in Appendix 7. Of particular interest, the results of the sieve analysis, the soil erodibility factor, a description of the topographic relief of the project area, and the lithology of onsite soils should be reported in Appendix 7. There are no onsite streams within this project. X Step 1.B —Are onsite streams capable of delivering Bed Sediment Supply from the site, if any, to the receiving channel? Rate the potential: ❑ High ❑ Medium ® Low Results from the analyses of the sediment delivery potential to the receiving channel should be documented in Appendix 7 and identify, at a minimum, the Sediment Source, the distance to the receiving channel, the onsite channel density, the project watershed area, the slope, length, land use, and rainfall intensity. There are no_onsite streams to deliver sediment to the receiving channel, not applicable. • X Step 1.C—Will the receiving channel adversely respond to a change in Bed Sediment Load? Rate the need for bed sediment supply: ❑ High ❑ Medium ® Low Results from the in-stream analysis to be performed both onsite should be documented in Appendix 7. The analysis should, at a minimum, quantify the bank stability and the degree of incision, provide a gradation of the Bed Sediment within the receiving channel, and identify if the channel is sediment supply-limited. There are no onsite streams to deliver sediment to the receiving channel, not applicable. X Step 1.0—Summary of Step 1 Summarize in Table E.3 the findings of Step 1 and associate a score (in parenthesis) to each step. The sum of the three individual scores determines if a stream is a significant contributor to the receiving stream. • Sum is equal to or greater than eight - Site is a significant source of sediment bed material — all on-site streams must be preserved or by-passed within the site plan. The • applicant shall proceed to Step 2 for all onsite streams. - 22- Water Quality Management Plan.(WQMP) Temecula Medical Office Building • • Sum is greater than five but lower than eight. Site is a source of sediment bed material— some of the on-site streams must be preserved (with identified streams noted). The applicant shall proceed to Step 2 for the identified streams only. • Sum is equal to or lower than five. Site is not a significant source of sediment bed material.The applicant may advance to Section F. Table E.3 Triad Assessment Summary Step Rating Total Score 1.A ❑ High(3) ❑ Medium (2) ® Low(1) 1 1.13 ❑ High(3) ❑ Medium (2) ® Low(1) 1 1.0 ❑ High(3) ❑ Medium (2) ® Low(1) 1 Significant Source Rating of Bed Sediment to the receiving channel(s) 3' Step 2: Preservation of Identified Onsite Channels Onsite streams identified as a Significant Source of Bed Sediment should be avoided in the site design. Check one of the following: ®The site design doesavoid all onsite channels identified as a Significant Source of Bed Sediment (The • applicant may disregard subsequent steps of Section E.5 and directly advance directly to Section F.) Or - ❑The site design does NOT avoid all onsite channels identified.as a Significant Source of Bed Sediment (The applicant may proceed with the subsequent steps of Section E.5). Provide in Appendix 7 a site map that identifies all onsite channels and highlights those onsite channels that were identified as a Significant Source of Bed Sediment. The site map shall demonstrate, if feasible, that the site design avoids those onsite channels identified as a Significant Source of Bed Sediment. In addition, the applicant shall describe the characteristics of each onsite channel identified as a Significant Source of Bed Sediment. If the design plan cannot avoid the onsite channels, please provide a rationale for each channel individually. There are no onsite channels to evaluate. Step 3: By-Pass of Upstream Drainage(s) to Preserve the discharge of Bed Sediment Supply to the receiving channel(s) Orisite channels identified as a Significant Source of Bed Sediment Supply should be by-passed the discharge of Bed Sediment Supply to the receiving channel(s). Check one of the following: ®'The site design does avoid and/or bypass all onsite channels identified as a source of Bed Sediment Supply(The applicant may directly advance to Section F.) • Or - -23- Water Quality Management Plan (WQMP) Temecula Medical Office Building • ❑The site design.does NOT avoid or by-pass all onsite channels identified as a source of Bed Sediment Supply(The applicant may proceed to on Alternative Approach, as defined in Section F). There are no onsite'channels to evaluate. Provide in Appendix 7 a site map that identifies all onsite channels and highlights those onsite channels that were identified as a Significant Source of Bed Sediment Supply. The site map shall demonstrate, if feasible, that the site design avoids or by-passes those onsite channels of significant Bed Sediment Supply to the receiving channel(s). In addition, the applicant shall describe the characteristics of each onsite channel identified as a Significant Source of Bed.Sediment Supply. If the design plan cannot avoid or by-pass the onsite channels, please provide a rationale for each channel individually. • - - 24 - Water Quality Management Plan (WQMP) Temecula Medical Office Building Section F: Alternative Compliance LID BMPs and Hydrologic Control BMPs are expected to be feasible on virtually all projects. Where LID BMPs and/or Hydrologic Control BMPs have been demonstrated to be infeasible as documented in Section D and/or Section E, respectively,other Treatment Control BMPs or alternative compliance approaches must be used (subject LID waiver and/or HMP alternative compliance approval by the Copermittee). In addition, if supporting documentation demonstrates the infeasibility to implement Sediment Supply BMPs onsite(See Section E.5),the applicant may refer to Section F.5. Check one of the following boxes: X LID Principles, LID BMPs, Hydrologic Control BMPs, and Sediment Supply BMPs have been incorporated into the site design to fully address all Drainage Management Areas. No alternative compliance measures are required for this project and thus this Section,is not required to be completed. - Or - ❑ LID Principles and LID BMPs have NOT been incorporated into the site design to fully address the LID requirements for all Drainage Management Areas AND HMP Performance Standards are not fully addressed in the following Drainage Management Areas. • o The following Drainage Management Areas are unable to be addressed using LID BMPs. A site specific analysis demonstrating technical infeasibility of LID BMPs has been approved by the Copermittee,and included in Appendix S.The following alternative compliance measures on the following pages are being implemented to ensure that any pollutant loads expected to be discharged by not incorporating LID BMPs, are fully mitigated.The applicant should complete Section F.1,Section F.2, and Section F.3, as applicable. o A site specific analysis demonstrating technical infeasibility of Hydrologic Control BMPs and Sediment Supply BMPs has been approved by the Copermittee and included in Appendix 7. Projects less than one acre have completed the Simplified Technical Feasibility Study.The applicant should complete Section F.5 and/or Section F.6, as applicable. List DMAs Here. - Or - ❑ LID Principles and LID BMPs have been Incorporated into the site design to fully address the DCV for all Drainage Management Areas. However, HMP Performance Standards are not fully • addressed in the following Drainage Management Areas.A site specific analysis demonstrating technical infeasibility of Hydrologic Control BMPs and Sediment Supply BMPs has been approved by the Copermittee and included in Appendix 7. Projects less than one acre have - 25 - Water Quality Management Plan (WQMP) Temecula Medical Office Building • completed the Simplified Technical Feasibility.The applicant should complete Section F.5 and/or Section F.6, as applicable. List DMAs Here. • - 26- Water Quality Management Plan (WQMP) Temecula Medical Office Building F.1 Identify Pollutants of Concern Utilizing Table A.1 from Section A above which noted your projecVs Receiving Waters and their associated USEPA approved 303(d) listed impairments, cross reference this information with that of your selected Priority Development Project Category in Table F.1 below. If the identified General Pollutant Categories are the same as those listed for your Receiving Waters, then these will be your Pollutants of Concern and the appropriate box or boxes will be checked on the last row. The purpose of this is to document compliance and to help you appropriately plan for mitigating your Pollutants of Concern in lieu of implementing LID BMPs. Table FA Potential Pollutants by Land Use Type Priority Development General Pollutant Categories Project Categories andfor Toxic Project Features (check those Bacterial Metals Nutrients Pesticides Organic Sediments Trash & Oil R that apply) Indicators Compounds Debris Grease e ❑ Detached Residential P N P P N P P P Development ❑ Attached Residential P N P P N P P P(z) Development ® Commercial/Industrial Fri) P P(') P(') P(e) P(') P P Development ❑ Automotive Repair N P N N Pr s) N P P • Shops ❑ Restaurants P N N N N N P P (>5,000 ftz) ❑ Hillside Development P N P P N P P P (>5,000 ft� ® Parking Lots p(e) P P.I') Pr') P(') PI'> P P (>5,000 ft� ❑ Retail Gasoline Outlets N P N N P N P P Project Priority Pollutant(s) of Concern P=Potential N=Not Potential (')A potential Pollutant if non-native landscaping exists or is proposed onsite;otherwise not expected (2)A potential Pollutant if the project includes uncovered parking areas;otherwise not expected (7)A potential Pollutant is land use involving animal waste (')Specifically petroleum hydrocarbons re)Specifically solvents (6)Bacterial indicators are routinely detected in pavement runoff - 27- Water Quality Management Plan (WQMP) Temecula Medical Office Building F.2 Stormwater Credits Projects that cannot implement LID BMPs but nevertheless implement Smart Growth Principles are potentially eligible for Stormwater Credits. Utilize Table 3-7 within the WQMP Guidance Document to identify your Project Category and its associated Water Quality Credit. If not applicable,write N/A. NO STORMWATER CREDITS PROPOSED. Table F.2 Stormwater Credits Qualifying Project Categories Credit Percentage' N/A Total Credit Percentage' 'Cannot Exceed 50% 'Obtain corresponding data from Table 3-7 in the WQMP Guidance Document F.3 Sizing Criteria After you appropriately considered Stormwater Credits for your Project, utilize Table F.3 below to appropriately size them to the DCV, or Design Flow Rate, as applicable. Please reference Chapter 3.5.5 of the WQMP Guidance Document for further information. • Table F.3 Treatment Control BMP Sizing Post- DMA Project Effective DMA DMA x DMA (square Surface Impervious Runoff Runoff Enter BMP Name,/Identifier Here Type/ID feet) Type Fraction,It Factor Factor [A] [B] [C] [A] r JCJ N/A Proposed Volume Total Storm or Flow Design Minimum DCV Water on Plans Storm or Design Flow Credit % (cubic Depth Rate (cubic Reduction feet or (in) feet or cfs) CA) AT f= [D] [E] [F] _ [Dlx[El [F]X(1-[HD [I] E[AJ [G] [B),[CI Is obtained as described in Section 2.S from the WQMP Guidance Document IEI is obtained from Exhibit A in the WQMP Guidance Document IGI is for Flow-Based Treatment Control BMPs(G)=43,560,for Volume-Based Control Treatment BMPs,IGI=12 [H)is from the Total Stormwater Credit Percentage as Calculated from Table E.2 above [I)as obtained from a design procedure sheet from the BMP manufacturer and should be included in Appendix 6 • - 28- Water Quality Management Plan(WQMP) Temecula Medical Office Building F.4 Treatment Control BMP Selection Treatment Control BMPs typically provide proprietary treatment mechanisms to treat potential Pollutants in runoff, but do not sustain significant biological processes. Treatment Control BMPs must have a removal efficiency of a medium or high effectiveness as quantified below: • High: equal to or greater than 80%removal efficiency • Medium: between 40%and 80%removal efficiency Such removal efficiency'documentation (e.g., studies, reports, etc.) as further discussed in Chapter 3.5.2 of the WQMP Guidance Document, must be included in Appendix 6. In addition, ensure that proposed Treatment'Control BMPs are properly identified on the WQMP Site Plan in Appendix 1. Table F.4 Treatment Control BMP Selection Selected Treatment Control Priority Pollutant(s) of Concern to Mitigate' Removal BMP Name or ID' Efficiency Percentage' Bacterial Indicators, Metals, Nutrients, BMP 1 Pesticides,Toxic Organic Compounds, High Sediments,Trash & Debris, Oil.& Grease Bacterial Indicators, Metals, Nutrients, BMP 2 Pesticides,Toxic Organic Compounds,Trash & High Debris,Oil & Grease • Bacterial Indicators, Metals, Nutrients, BMP 3 Pesticides,Toxic Organic Compounds,Trash & High Debris, Oil & Grease Treatment Control BMPs must not be constructed within Receiving Waters.In addition,a proposed Treatment Control BMP may be listed more than once If they possess more than one quolifying pollutant removal efficiency. 'Cross Reference Table E.]above to populate this column. 'As documented in a.Copermittee Approved Study and provided in Appendix 6. F.5 Hydrologic Performance Standard — Alternative Compliance Approach Alternative compliance options are only available if the governing Copermittee has acknowledged the infeasibility of onsite Hydrologic Control BMPs and approved an alternative compliance approach. Attach to Appendix 7 the Technical Feasibility Study(Projects equal or greater than one acre)or Simplified Technical Feasibility Study(Projects less than one acre)along with a written approval from the Copermittee.The applicant may refer to Section 2.2.iv of the SMR HMP for extensive guidelines on the alternative compliance approach. Select the pursued alternative and describe the specifics of the alternative: ❑ Offsite Hydrologic Control Management within the same channel system Not Applicable ❑ In-Stream Restoration Project • Insert narrative description here - 29- Water Quality Management Plan (WQMP) Temecula Medical Office.Building • For Offsite Hydrologic Control BMP Option Each Hydrologic Control BMP must be designed to ensure that the flow duration curve of the post- development DMA will not exceed that of the pre-existing, naturally occurring, DMA by more than ten percent over a one-year period. Using SMRHM, the applicant shall demonstrate that the performance of each designed Hydrologic Control BMP is equivalent with'the Hydrologic Performance Standard for onsite conditions. Complete Table FA below and identify,for.each Hydrologic Control BMP, the equivalent DMA the Hydrologic Control BMP mitigates, that the SMRHM model passed, the total volume capacity of the BMP,the BMP footprint at top floor elevation, and the drawdown time of the BMP. SMRHM summary reports for the alternative approach should be documented in Appendix 7. Refer to the SMRHM Guidance Document for additional information on SMRHM.You can add rows to the table as needed. Table F.5 Offsite Hydrologic Control BMP Sizing BMP Name/Type Equivalent SMRHM BMP Volume BMP Drawdown DMA(ac) Passed (ac-ft) Footprint(ac) time(hr) N/A • For Instream Restoration Option Attach to Appendix 7 the technical report detailing the condition of the receiving channel subject to the proposed hydrologic and sediment regimes. Provide the full design plans for the in-stream restoration project that have been approved by the Copermittee. F.6 Sediment Supply Performance Standard - Alternative Compliance The alternative compliance option to the Sediment Supply Performance Standard is only available if the governing Copermittee has approved the investigation of alternative Bed Sediment Supply options. Attach to Appendix 7 the Technical Feasibility Study, along with the modeling analysis,the long-term monitoring program, and the potential corrective actions,that demonstrate the performance of the overall alternative compliance program.The applicant may refer to Section 2.3.ii of the SMR HMP for extensive guidelines on the alternative compliance approach. Provide a narrative describing the alternative Bed Sediment Supply approach, including the long-term monitoring program and the findings of the numerical modeling. Not Applicable • - 30- Water Quality Management Plan (WQMP) Temecula Medical Office Building Section G: Source Control BMPs Source Control BMPs.include permanent, structural features that may be required in your Project plans — such as roofs over and berms around trash and recycling areas — and Operational BMPs, such as regular sweeping and "housekeeping", that must be implemented by the site's occupant or user. The Maximum Extent Practicable (MEP) standard typically requires both types of BMPs. In general, Operational BMPs cannot be substituted for a feasible and effective structural BMP. Using the Pollutant Sources/Source Control Checklist in Appendix 8, review the following procedure to specify Source Control BMPs for your site: 1. Identify Pollutant Sources: Review Column 1 in the Pollutant Sources/Source Control Checklist. Check off the potential sources of Pollutants that apply to your site. 2. Note Locations on Project-Specific WQMP Exhibit: Note the corresponding requirements listed in Column 2 of the Pollutant Sources/Source Control Checklist. Show the location of each Pollutant source and each permanent Source Control BMP in your Project-Specific WQMP Exhibit located in Appendix 1. 3. Prepare a Table and Narrative: Check off the corresponding requirements listed in Column 3 in the Pollutant Sources/Source Control Checklist. In the left column of Table G.1 below, list each potential source of Pollutants on your site (from those that you checked in the Pollutant Sources/Source Control Checklist). In the middle column, list the corresponding permanent, Structural Source • Control BMPs (from Columns 2 and 3 of the Pollutant Sources/Source Control Checklist) used to prevent Pollutants from entering runoff. Add additional narrative in this column that explains any special features, materials or methods of construction that will be used to implement these permanent, Structural Source Control BMPs. 4. Identify Operational Source Control8MPs:To complete.your table, refer once again to the Pollutant Sources/Source Control Checklist. List in the right column of your table the Operational BMPs that should be implemented as long as the anticipated activities continue at the site. Copermittee stormwater ordinances require that applicable Source Control BMPs be implemented; the same BMPs may also be required as a condition of a use permit or other revocable Discretionary Approval for use of the site. Table G.1 Structural and Operational Source Control BMP Potential Sources of Operational Source Control BMPs Runoff Pollutants Structural Source Control BMPs Metals Bioretention Basin to be constructed and maintained Parking Lot Sweeping(to be funded by by private property owner private property owner). Toxic Organic Compounds Bioretention Basin to be constructed and maintained by private property owner Trash&Debris Trash pick up&removal by site maintenance personnel(to be funded by private property owner) Oil&Grease Bioretention Basin to be constructed and maintained Parking Lot Sweeping Ito be funded by • by private property owner private property owner). - 31 - Water Quality Management Plan(WQMP) Temecula Medical Office Building Section H: Construction Plan Checklist Populate Table HA below to assist the plan checker in an expeditious review of your project. The first two columns will contain information that was prepared in previous steps, while the last column will be populated with the corresponding plan sheets. This table is to be completed with the submittal of your final Project-Specific WQMP. Table H1 Construction Plan Cross-reference BMP No.or ID BMP Identifier and Description Corresponding Plan Sheet(s) BMP I Bioretention Basin Grading Sheet Nos. 3 and 4 BMP 2 Infiltration Trench, Grading Sheet Nos. 3 and 4 BMP 3 Infiltration Trench Grading Sheet Nos. 3 and 4 • Note that the updated table — or Construction Plan WQMP Checklist— is-only a reference tool to facilitate an easy comparison of the construction plans to your Project-Specific WQMP. The Copermittee with jurisdiction over the Project site can advise you regarding the process required to propose changes to the approved Project-Specific WQMP. • 7Z Water Quality Management Plan (WQMP) Temecula Medical Office Building Section I: Operation, Maintenance and Funding The Copermittee with jurisdiction over the Project site will periodically verify that BMPs on your Project are maintained and continue to operate as designed.To make this possible, the Copermittee will require that you include in Appendix 9 of this Project-Specific WQMP: 1. A means to finance and implement maintenance of BMPs in perpetuity, including replacement cost. 2. Acceptance of responsibility for maintenance from the time the BMPs are constructed until responsibility for operation and maintenance is legally transferred. A warranty covering a period,following construction may also be.required. 3. An outline of general maintenance requirements for the Stormwater BMPs you have selected. 4. Figures delineating and designating pervious and impervious areas, location, and type of Stormwater BMP, and tables of pervious and impervious areas served by each facility. Geo- locating the BMPs using a coordinate system of latitude and longitude is recommended to help facilitate a future statewide database system. S. A separate list and location of self-retaining areas of areas addressed by LID Principles that do not require specialized Operations and .Maintenance or inspections but will require typical landscape maintenance as noted in Chapter 5, in the WQMP Guidance. Include a brief description of typical landscape maintenance for these areas. • The Copermittee with jurisdiction over the Project site will also require that you prepare.and submit a detailed BMP Operation and Maintenance Plan that sets forth a maintenance schedule for each of the BMPs built on your site. An agreement assigning responsibility for maintenance and providing for inspections and certification may also be required. Details of these requirements and instructions for preparing a BMP Operation and Maintenance Plan are in Chapter 5 of the-WQMP Guidance Document. Maintenance Mechanism: BMPs will be constructed and maintained by the property owner: Temecula M.O.B., LLC P.O. Box 2248 Orange, CA 92859 Will the proposed BMPs be maintained by a Homeowners' Association (HOA) or Property Owners Association (PDA)? ❑Y ® N Include your Operation and Maintenance Plan and Maintenance Mechanism in Appendix 9. Additionally, include all pertinent forms of educational materials for those personnel that will be maintaining the proposed BMPs within this Project-Specific WQMP in Appendix 10. • - 33 - Water Quality Management Plan (WQMP) Temecula Medical Office Building Acronyms,,Abbreviations and .Definitions 2010 SMR MS4 Order No. R9-2010-0016, an NPDES Permit issued by the San Diego Permit Regional Water Quality Control Board. Applicant Public or private entity seeking the discretionary approval of new or replaced'improvements from the Copermittee with jurisdiction over the project site. The Applicant has overall responsibility for the implementation and the approval of a Priority Development Project. The WQMP uses consistently the term "user" to refer to the applicant such as developer or project proponent. The WQMP employs also the designation "user" to identify the Registered Professional Civil Engineer responsible for submitting the Project-Specific WQMP,and designing the required BMPs. Best Management Defined in 40 CFR 122.2 as schedules of activities, prohibitions of Practice (BMP) practices, .maintenance procedures, and other management practices to prevent or reduce the pollution of waters of the United States. BMPs also include treatment requirements, operating procedures and practices to control plant site, runoff, spillage or leaks, sludge or waste disposal, or drainage from raw material storage. In the case of municipal storm water permits, BMPs are tvpically used in place of numeric effluent limits. • BMP Fact Sheets BMP Fact Sheets are available in the LID BMP Design Handbook. Individual BMP Fact Sheets include sitting considerations, and design and sizing guidelines for seven types of structural BMPs (infiltration basin, infiltration trench; permeable pavement, harvest- and-use,bioretention,extended detention basin, and sand filter). California Publisher of the California Stormwater Best Management Practices Stormwater Quality Handbooks, available at Association (CASQA) www.cabmihandbooks.com. Conventional A type of BMP that provides treatment of stormwater runoff. Treatment Control Conventional treatment control BMPs, whfle designed to treat BMP particular Pollutants, typically do not provide the same level of volume reduction as LID BMPs, and commonly require more specialized maintenance than LID BMPs. As such, the 2010 SMR MS4 Permit and this WQMP require the use of LID BMPs wherever feasible, before Conventional Treatment BMPs can be considered or implemented. Copermittees The 2010 SMR MS4 Permit identifies the Cities of Murrieta, Temecula, and Wildomar, the County, and the District, as Co ermittees for the SMR. County The abbreviation refers to the County of Riverside in this document. • CEQA California Environmental Quality Act-a statute that requires state and local agencies to identify the significant environmental impacts of their actions and to avoid or mitt ate those impacts, if feasible. -34 - Water Quality Management Plan (WQMP) Temecula Medical Office Building iCIMIS California Irrigation Management Information System-an integrated network of 118 automated active weather stations all over California managed by the California Department of Water Resources. CWA Clean Water Act- is the primary federal law governing water pollution. Passed in 1972, the CWA established the goals of eliminating releases of high amounts of toxic substances into water, eliminating additional water pollution by 1985,and ensuring that surface waters would meet standards necessary for human sports and recreation by 1983. CWA Section 402(p) is the federal statute requiring NPDES permits for discharges from MS4s. CWA Section 303(d) Impaired water in which water quality does not meet applicable Waterbody water quality standards and/or is not expected to meet water quality standards, even after the application of technology based pollution controls required by the CWA. The discharge of urban runoff to these water bodies by the Copermittees is significant because these discharges can cause or contribute to violations of applicable water quatity standards. Design Storm The 2010 SMR MS4 Permit has established the 85th percentile, 24- hour storm event as the "Design Storm". The applicant may refer to Exhibit A to identify the applicable Design Storm Depth (D85) to • the project. DCV Design Capture Volume (DCV) is the volume of runoff produced from the Design Storm to be mitigated through LID Retention BMPs, Other LID BMPs and Volume Based Conventional Treatment BMPs, as appropriate. Design Flow Rate The design flow rate represents the minimum flow rate capacity that flow-based conventional treatment control BMPs should treat to the MEP, when considered. DCIA Directly Connected Impervious Areas- those impervious areas that are hydraulically connected to the MS4 (i.e. street curbs, catch basins, storm drains, etc.) and thence to the structural BMP without flowing over pervious areas. Discretionary A decision in which a Copermittee uses its judgment in deciding Approval whether and how to carry out or approve a project. District Riverside County Flood Control and Water Conservation District. DMA A Drainage Management Area - a delineated portion of a project site that is hydraulically connected to a common structural BMP or conveyance point. The Applicant may refer to Section 3.3 for further guidelines on how to delineate DMAs. • -35 - Water Quality Management Plan(WQMP) Temecula Medical Office Building • Drawdown Time Refers to the amount of time the design volume takes to pass through the BMP. The specified or incorporated drawdown times are to ensure that adequate contact or detention time has occurred for treatment, while not creating vector or other nuisance issues. It is important to abide by the drawdown time requirements stated in the fact sheet for each specific BMP. Effective Area Area which 1) is suitable for a BMP (for example, if infiltration is potentially feasible for the site based on infeasibility criteria, infiltration must be allowed over this area) and 2) receives runoff from impervious areas. ESA An Environmental Sensitive Area (ESA) designates an area "in which plants or animals life or their habitats are either rare or especially valuable because of their special nature or role in an ecosystem and which would be easily disturbed or degraded by human activities and developments". (Reference: California Public Resources Code§30107.5). ET Evapotranspiration,(ET) is the lossof water to the atmosphere by the combined processes of evaporation (from soil and plant surfaces) and transpiration (from plant tissues). It is also an indicator of how much water crops, lawn, garden, and trees need for health growth and productivity • FAR The Floor Area Ratio (FAR) is the total square feet of a building divided by the totalsquare feet of the lot the building is located on. Flow-Based BMP Flow-based BMPs are conventional treatment control BMPs that are sized to treat the design flow rate. Fppp Facility Pollution Prevention Plan HCOC 'Hydrologic Condition of Concern - Exists when the alteration of a site's hydrologic regime caused by development would cause significant impacts on downstream channels and aquatic habitats, alone or in conjunction with impacts of other projects. HMP Hydromodification Management Plan - Plan defining Performance Standards for PDPs to manage increases in runoff discharge rates and durations. Hydrologic Control BMP to mitigate the increases in runoff discharge rates and BMp durations and meet the Performance Standards set forth in the HMP. HSG Hydrologic Soil Groups - soil classification to indicate the minimum rate of infiltration obtained for bare soil after prolonged wetting. The HSGs are A (very low runoff potential/high infiltration rate), B, C, and D (high runoff potential/very low infiltration rate Hydromodificatlon The 2010 SMR M54 Permit identifies that increased volume, velocity, frequency and discharge duration of storm water runoff from developed areas has the potential to greatly accelerate • downstream erosion, impair stream habitat in natural drainages, and negatively impact beneficial uses. -36- Water Quality Management Plan(WQMP) Temecula Medical Office Building • JRMP A separate Jurisdictional Runoff Management Plan ORMP) has been developed by each Copermittee and identifies the local programs and activities that the Copermittee is implementing to meet the 2610 SMR MS4 Permit requirements. LID Low Impact Development(LID) is a site design strategy with a goal of maintaining or replicating the pre-development hydrologic regime through the use of design techniques. LID site design BMPs help preserve and restore the natural hydrologic cycle of the site, allowing for filtration and infiltration which can greatly reduce the volume, peak flow rate, velocity, and pollutant loads of storm water runoff. LID BMP A type of stormwater BMP that is based upon Low Impact Development concepts. LID BMPs not only provide highly effective treatment of stormwater runoff, but also yield potentially significant reductions in runoff volume - helping to mimic the pre- project hydrologic regime, and also require less ongoing maintenance than Treatment Control BMPs. The applicant may refer to Chapter 2. LID BMP Design The LID BMP Design Handbook was developed by the Handbook Copermittees to provide guidance for the planning, design and maintenance of LID BMPs which may be used to mitigate the water quality impacts of PDPs within the County. • LID Bioretention BMP LID Bioretention BMPs are bioretention areas are vegetated (i.e., landscaped) shallow depressions that provide storage, infiltration, and evapotranspiration, and provide,for pollutant removal (e.g., filtration, adsorption, nutrient uptake) by filtering stormwater through the vegetation and soils. In bioretention areas, pore spaces and organic material in the soils help to retain water in the form of soil moisture and to promote the adsorption of pollutants (e.g., dissolved metals and petroleum hydrocarbons) into the soil matrix. Plants use soil moisture and promote the drying of the soil through transpiration. The 2010 SMR MS4 Permit defines "retain' as to keep or hold in a particular place, condition, or position without discharge to surface waters. LID Biotreatment BMPs that reduce stormwater pollutant discharges by intercepting BMP rainfall on vegetative canopy, and through incidental infiltration and/or evapotranspiration, and filtration, and other biological and chemical processes. As stormwater passes down through the planting soil, pollutants are filtered, adsorbed, biodegraded, and sequestered by the soil and plants, and collected through an underdrain. LID Harvest and BMPs used to facilitate capturing Stormwater Runoff for later use Reuse BMP without negatively impacting downstream water rights or other • Beneficial Uses. - 37 - Water Quality Management Plan (WQMP) Temecula Medical Office Building • LID Inflltration BMP BMPs to reduce stormwater runoff by capturing and infiltrating the runoff into in-situ soils or amended onsite soils. Typical LID Infiltration BMPs include infiltration basins, infiltration trenches and pervious avements. LID Retention BMP BMPs to ensure full onsite retention without runoff of the DCV such as infiltration basins, bioretention, chambers, trenches, permeable pavement and pavers, harvest and reuse. LID Principles Site design concepts that prevent or minimize the causes (or drivers) of post-construction impacts, and help mimic the pre- development h drolo 'c regime. MEP Maximum Extent Practicable - standard established by the 1987 ame m ndents to the CWA for the reduction of Pollutant discharges from MS4s. Refer to Attachment C of the 2010 SMR MS4 Permit for a complete definition of MEP. MF Multi4amily - zoning classification,for parcels having 2 or more living residential units. MS4 Municipal Separate Storm Sewer System (MS4).is a conveyance or system of conveyances (including roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, man-made channels, or storm drains): (i) Owned or operated by a State, city, town, borough, county, parish, district, association, or other public • body (created by or pursuant to State law) having jurisdiction over disposal of sewage, industrial wastes, storm water, or other wastes, including special districts under State law such as a sewer district; Flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or designated and approved management agency under section 208 of the CWA that discharges to waters of the United States; (ii) Designated or used for collecting or conveying storm water; (iii) Which is not a combined sewer; (iv) Which is not part of the Publicly Owned Treatment Works (POTW) as defined at 40 CFR 122.26. New Development Defined by the 2010 MS4 permit as 'Priority Development Projects' Project if the project, or a component of the project meets the categories and thresholds described in Section 1.1.1. NPDES National Pollution Discharge Elimination System - Federal program for issuing, modifying, revoking and reissuing, terminating, monitoring and enforcing permits, and imposing and enforcing pretreatment requirements, under Sections 307, 318, 402, and 405 of the CWA. NRCS Natural Resources Conservation Service PDP Priority Devclopment Project - Includes New Development and Redevelopment project categories listed in Section F.1.d(2) of Order • No. R9-2009-0002. -38- Water Quality Management Plan (WQMP) Temecula Medical Office Building • Priority Pollutants of Pollutants expected to be present on the project site and for which a Concern downstream water body is also listed as Impaired under the CWA Section 303 d list or by a TMDL. Project-Specific A plan specifying and documenting permanent LID Principles and WQMp Stormwater BMPs to control post-construction Pollutants and stormwater runoff for the life of the PDP, and the plans for o eration and maintenance of those BMPs for the life of the project. Receiving Waters Waters of the United States. Redevelopment The creation, addition, and or replacement of impervious surface Project on an already developed site. Examples include the expansion of a building footprint, road widening, the addition to or replacement of a 'structure, and creation or addition of impervious surfaces. Replacement of impervious surfaces includes any activity that is not part of a routine maintenance activity where impervious material(s) are removed, exposing underlying soil during construction. Redevelopment does not include trenching and resurfacing associated with utility work; resurfacing existing roadways; new sidewalk construction, pedestrian ramps, or bike lane on existing roads; and routine replacement of damaged pavement,such as pothole repair. Project that meets the criteria described in Section 1. • Runoff.Fund Runoff Funds have not been established by the Copermittees and are not available to the Applicant. If established, a Runoff Fund will develop regional mitigation projects where PDPs will be able to buy mitigation credits if it is determined that implementing onsite controls is infeasible. San Diego Regional San Diego Regional Water Quality Control Board - The term Board "Regional Board", as defined in Water Code section 13050(b), is intended to refer to the California Regional Water Quality Control Board for the San Diego Region as specified in Water Code Section 13200. State agency responsible for managing and regulating water quality in the SMR. SCCWRP Southern California Coastal Water Research Project Site Design BMP Site design BMPs prevent or minimize the causes (or drivers) of post-construction impacts, and help mimic the pre-development h drolo c re 'me. SF Parcels with a zoning classification for a single residential unit. SMC Southern California Stormwater Monitoring Coalition SMR The Santa Margarita Region (SMR) represents the portion of the Santa Margarita Watershed that is included within the County of Riverside. • - 39- Water Quality Management Plan (WQMP) Temecula Medical Office Building . Source Control BMP Source Control BMPs land use or site planning practices, or structural or nonstructural measures that aim to prevent runoff pollution by reducing the potential for contamination at the source of pollution. Source control BMPs minimize the contact between Pollutants and runoff. Stormwater.Credit Stormwater Credit can be claimed by an Applicant if certain development practices that provide broad-scale environmental benefits to communities are incorporated into the project design. Refer to Section 3.5.4 for additional information on Stormwater Credits. Structural BMP Structures designed to remove pollutants from stormwater runoff and mitigate h dromodification impacts. SWppp Storm Water Pollution Prevention Plan Tentative Tract Map Tentative Tract Maps are required for all subdivision creating five (5) or more parcels, five (5) or more condominiums as defined in Section 783 of the California Civil Code, a community apartment project containing five (5) or more parcels, or for the conversion of a dwelling to a stock cooperative containing five (5) or more dwelling units. TMDL Total Maximum Daily Load - the maximum amount of a.Pollutant that can be discharged into a waterbody from all sources(point and non-point) and still maintain Water Quality Standards. Under • CWA Section 303(d), TMDLs must be developed - for all waterbodies that. do not meet Water Quality Standards after application of technology-based controls. USEPA United States Environmental Protection Agency Volume-Based BMP Volume-Based BMPs applies to BMPs where the primary mode of pollutant removal depends upon the volumetric capacity such as detention, retention, and infiltrations stems. WQMP Water Quality Management Plan Wet Season The 2010 SMR MS4 Permit defines the wet season from October 1 through April 30.. • -40- Water Quality Management Plan (WQMP) Temecula Medical Office Building Appendix 1: Maps and Site Plans Location Map, WQMP Site Plan and Receiving Waters Map • -41 - �f 0 0 pq DE SITE cy LP • c9 IWO RE VICINITY MAP NO SCALE cn,l:/ 's -;h O `, � Rag4AW k Valiey,_1 � •'4 mac, � � ,�. OS+ .\eV � \ \` 'l ��•. 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Water Quality Management Plan(WQMP) Temecula Medical Office Building Appendix 2: Construction Plans Grading and Drainage Plans • -42- I� 1 PRECISE GRADING PLAN PORTION OF LOT 27 OF TRACT NO. 3752 CITY OF TEMECULA, CALIFORNIA ; TEMECULA MEDICAL OFFICE BUILDING S1 GRADING NOTES GENERAL NOTES PA 14-0107 1. ONNd� ALL aItiRICTIpI ND minm IEIARD At9Nlts GE EICDVIAl4 1AD I. mADAmn All 100!WAIL Qleml ro M I�OIO m M MRESNT fNldl CMPTER.Is w n E anR ER)DDLL K N100FU P A(mDRNE RIM m M OM RE mNr mN can ENGINEERING I G RBC iCIOa a•ISm&LAL(Nm aNrPRN le m UA an a'r�O�AA ANXIA AL 0p0� M oQmmOF Alm IiRYam wmcmlrs} Marts pm®Iw uo aoamxml YANw. Im 1 pIEET N0. 2 006RRTIOI MANUAL Ill NAIEANE mNDRJU L STATE m11O1 v M OmFS NO 1rmIWpIR I -' GLimOA 91OR10 CDa(IPPDCa N4 I AcammI E RE STATE Mile R m00M1°am PmBO�ir r�i��n e'��ml ®IIAa wolAua mzml Oars) 1 DtPORTOLA ROAD rorr sTIPPOA ten]-a]or I —-—-- 1 A lRAOMi PFANi SMNL K®INN®PRICII W LNRmIMlmli v ] N.es IO®Dull a NmiE.o'AA M PUME WOM INSPECTION UE � z♦a PIOE NI- VICINITY MAP Ar RRI .me-LNe AT IGEr SA wun N ADVANCE v ® ART I �I ` — -- - 71, I CONSTRUCTION NOTES I N OWNER/DEVELOPER MR AC71MIm L "�'A PIEaI 10�R�•ACE 1pN. A D19®IAllg DWl a®TAW Peal II 4 Qj pa611Eltf r TM[PC I>aOER QII®191 Nmr?ID®M c4nr.) 1.4T1 V A All NTIM1II® 9WL ODE N m1m1IMK NM M CITY. / 1.1 TIMa v M A61 w�8 x16roA1mN In Dum DmIE 1l]mm• 6 A WIIDC 19nIT a a Br.4pEy, PRIOR ro ACE .aQ IN PRIVATE I mn ll4 21AA PA M 140 Ilt [NNIMIONTA DRIED 0%®I T.IDES SAID NEIPM SIAL K cmmm' rX IS, OflflelmNi. 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G / / 'I �'O) • Dl�:•:.�co��,_po rid �A �'_ c 6._`'� o;i•°moo 1?f 4�:'1 �'�,Y Gr_`,'G I'�I_ �.-� it :o0 • _ I O �ucD � •O �O Dpo ool ' � a (ro b"t] OjpOo I,�UII nP tp uol�'c�O�Dn�' � O�DooOpoo o•�°_ �° II 11�'! p�°rin,.0000�V" 'a3onnnprrc i oar` goo r0 rye 'i 000 '.lOci op--tlo r vd0./ . OOr n Orltiu00r'••+ijp00000.u. ^Sq• .r000'O'0000000'Ob0001'. 0000.1 s0000 OOgn�4„j0 cCO.000r�O: ..00.0:0,00.0?• 00!�.0,004900000000000.•�•%JOOAg00000000000,00,O Q;,000000000.O.c,too�.o, O Q ��mO 0 � mO .-IMIUM-1-ma 0 o memo 0 - - . Water Quality Management Plan (WQMP) Temecula Medical Office Building Appendix 3: Soils Information Geotechnical Study and Other Infiltration Testing Data • • -43 - PROFESSIONAL ENGINEERS CONSULTING;. Inc. GEOTECHNICAL ENVIRONMENTAL TESTING INSPECTION • 15411 TraAaco Rd. N105 lake Forevi, CA 91630 Phone 949-768-3693 inj�.nesoil.com 27636 YneZRoad, 8l7 Temecula, CA 92591 Plume 951-698-4598 www.pesoil.coni GEOTECHNICAL INVESTIGATIONS SITE: Pacific Media Properties. 31775 De'Portola Road Temecula, CA 92592 , DATE: • April 19, 2014 Project Number: PM0414 PREPARED FOR: PadFlc Media Properties Mr. Warren Owens PO Box 2248 Orange, CA 92859 PROFESSIONAL ENGINEERS CONSULTING, Inc. GEOTECNNICAL ENVIRONMENTAL TESTING INSPECTION • 25422 7rabuco Rd #105 Lake Forest, CA 92630 Phone 949-768-3693 iujr,gpesoil.com 27636 Die-Road, #L 7 Temecula, CA 92591 Phone 951-698-1598 mvmpesoiLeom April 19.".2014 Mr. Warren Owens Pacific Media Properties PO Box 2248 Orange. CA 92859 Dear Mr. Owens: Professional Engineers Consulting, Inc.'is pleased to present you this soil report for your project'located'at 31773 De Portola'Road,"Temecula; CA 92392. Based on the actual site condition, laboratory analyses, and our field observations, we are providing you a summary of geotechnical .studies. It is our opinion that the enclosed conclusions and recommendations can be used for the design and construction of this project. • This opportunity to be of professional service is greatly appreciated. Should you have any questions or require additional information, please do not hesitate to contact our office at 949-768-3693. Respectfully Submitted, PROFESSIONAL ENGINEERS CONSULTING, Inc. oQpOFESS/0 No.51711 �_ m CCrn * Exp. C✓.10/14 s� CIVR v 9 OF CAUFOQ Saeed Shahid! Registered'Civil Engineer • PROFESSIONAL ENGINEERS CONSULTING, Inc. TABLE OF CONTENTS INTRODUCTION 1 SCOPE OF WORK I SITE LOCATION& DESCRIPTION I PROPOSED DEVELOPMENT 2 LIQUEFACTION CONDITIONS 2 SEISMICITY& FAULTING 3 GEOTECHNICAL INVESTIGATION A FIELD STUDY 4 LABORATORY.TESTING 4 ATTERBERG LIMITS 4 SOIL CLASSIFICATION 5 PARTICLE SIZE ANALYSES 5 R-VALUE 6 FIELD OBSERVATION 6 CONCLUSIONS AND RECOMMENDATIONS 6 FOUNDATION DESIGN RECOMMENDATIONS 7 • ALOWABLE FOUNDATION PRESSURE 8 LATERAL RESISTANCE 9 SETTLEMENT 9 EARTHWORK AND GROUND PREPARATION 9 IMPORTED SOIL IO FILL PLACEMENT&TESTING I 1 EFFECT OF GRADINFG ON ADJOINING PROPERTIES 1 I POST-GRADING CONSIDERATION 12 PAD DRAINAGE 12 UTILITY TRENCH BACKFILL 12 SITE CLEARING 13 FOOTING OBSERVATION 13 SOLUBALE SULFATE,CONCRETE TYPE 13 MASONARY GARDEN WALLS 13 EXTERIOR CONCRETE FLATWORK 14 REINFORCEMENT 14 SUBGRADE PREPARATION 14 EDGE BEAMS 15 FUTUREIMPROVEMENT 15 CONCRETE AND ASPHALT PAVEMENTS 16 PRELIMINARY ASPHALTIC CONCRETE PAVEMENT DESIGN 16 STRUCTURAL PAVEMENT SECTION 17 • PROFESSIONAL EN&INEEPS CONSULTING. Inc. TABLE OF CONTENTS (Continued..........) GEOTECHNICAL OBSERV ATION.AND TESTING 18 LIMITATIONS 19 APPENDIX A . FIGURES I. ` STI'E LOCATION 2. SITE MAP-SAMPLING LOCATIONS_ 3. SEISMIC HAZARD MAP 4. GEOLOGIC MAP • APPENDIX B TRENCH LOGS APPENDIX C SUMMARY OF LABORATORY ANALYSIS • PROFESSIONAL ENGINEERS CONSULTING, Inc. • Soil Report PadAc Med/a Properties 31775 De Portola Road. Temecula. CA 92592 Project Number:PM0414 Page 1 of 19 INTRODUCTION This report was prepared by Professional Engineers Consulting, Inc. to provide geotechnical investigation for the construction of a medical building facility within the lot located at 31775 De Portola Road, Temecula, CA 92592. See figures 1 & 2. The scope of this study is designed to determine and evaluate the surface and subsurface conditions on the subject site and to present preliminary recommendations for the foundation systems, structural design, and grading requirements for the building and the parking area. SCOPE OF WORK • Placing. four exploratory trenches, logging, soil sampling and preparation for the purpose of laboratory testing, engineering design recommendations, and analyses. • Laboratory testing of selected soil and/or bedrock samples, including visual classification • Preparation of a report presenting our findings, conclusions, and geotechnical recommendations for the type of foundation, structural design, seismic design, parking lot section, and grading procedures. • Providing seismic design values and recommendations S/TELOCAT/ON& DESCRIPTION The subject lot is within the City of Temecula at approximately two miles east of 15 Freeway. The area in general is developed with residential and commercial structures. Currently, the site is vacant PROFESSIONAL ENGINEERS CONSULTING, Inc. • 5611 Report Pad&Me&a Properties 31775 De Portole Road, Temecula, CA 92592 Project Number:PM0414 Page 1 of 19 PROPOSED DEVELOPMENT The lot is going to be used for the construction a medical center. Structures are to be supported on continuous and isolated pad footing type foundations. Loads on the foundations are unknown but are not anticipated to exceed 50 kips per linear foot for column loads. The proposed floors could consist of continuous concrete slabs placed on_finish grade and supported by footings. Finished floor elevations will be anticipated to have approximately + 2 % gradient from the street level -and also :in accordance with the city of Temecula design standards. Surface drainage will be controlled by sloped concrete flatwork earth swales and area • drains will be designed to carry surface water to drain outside the property. Currently architectural and engineering plans are not finalized. Therefore, our conclusions are preliminary and subject to modification. Should details involved in final design vary from those outlined above, this firm should be notified for review and possible revision of our recommendations. Otherwise we cannot take any responsibility. LIQUEFACTION CONDITIONS Liquefaction can occur when saturated loose and fine granular soils are subjected to excessive ground vibrations or exposure to groundwater. Per "Public Safety Element" publication issued by the city of Temecula, the site is within the area with liquefaction potential as shown on Figure 3. The subsurface mainly consists of sandy silty soil material with some thin layers of clay. • Groundwater was not encountered during our investigations. Additional liquefaction study may be needed based on the city of Temecula standards. PROFESSIONAL ENGINEERS CONSULTING, Inc. •, So//Report Pad&Med/a Properder 3177S Die Porfo/a Road, Temecula, CA 92592 Project Number:PM0414 Page 3 of 19 SEISMICITY and FAULT/NC PER 48 States, 2005 ASCE 7 Standard for Latitude = 33.4, Longitude = -117.1 Spectra/Response Acceleratlons Ss and Sl Ss and SI = Mapped Spectral Acceleration Values Site Class D - Fa = 1.0 ,Fv = 1.6 'Data are based on a 0.01 deg grid spacing Period Sa (sec) (g) 0.2 1.765 (Ss, Site Class D) • 1.0 0.632 (S1, Site Class D) Specdal Response Acceleradons SMs and SMI SMs= fa x Ss and SMI = Fv x SI Site Class D - Fa = I.0 ,Fv = 1.5 Period Sa (sec) (g) 0.2 1.765 (SMs, Site Class D) 1.0 0.948 (SMI, Site Class D) Deslgn.Specftl Response Accelerations SDs and SDl SDs = 2/3"x SMs and SDI = 2/3 x SMI Site Class D - Fa = 1.0 ,Fv = 1.5 Period Sa (sec) (g) 0.2 1.176 (SDs. Site Class D) 1.0 0.632 (SDI, Site Class D) • PROFESSIONAL ENGINEERS CONSULTING, Inc. • Sol/Report PadAc Media PropoVer 31775 De Portola Road, Temecula, CA 92592 Project Number:PM0414 Page 4 of 19 GEOTECHN/CAL INVEST/CATIONS FIELD STUDY Geotechnical field studies consisting of site observations and subsurface exploration were started on April 8, 2014, by placing total of four;trenches to depths of 10 feet to verify the subsurface conditions. Our Registered. Civil Engineer the encountered formations. The trench logs are included in Appendix W. Approximate locations of Trenches are shown on Figure 2. Undisturbed samples of the soils were obtained at selected intervals. Undisturbed . samples were obtained by driving a thin walled steel sampler with successive drops of a 25-pound weight having a free fall of 18 inches. Undisturbed soils were retained- in close fitting moisture proof containers and transported to our laboratory. Grab samples were also taken to perform geotechnical laboratory tests. The exploratory trenches used for subsurface exploration were backfilled with the native soil and with reasonable'effort to restore the area to its original condition. LABORATORY TESTING Laboratory analyses were performed per ASTM Standards. ATTEROERC LIMITS(ASTM D 4318) The sample is processed to remove any material retained on a 425-um (No. 40) sieve. The Liquid'Limit is determined'by performing trials in which a portion of the sample is spread in a brass cup, divided in two by a grooving tool, and then allowed to flow • together from the shocks caused by repeatedly dropping the cup in a standard mechanical device. The multipoint liquid limit, Method A. requires three or more trials PROFESSIONAL ENGINEERS CONSULTING, Inc. • Sol/Report PadAc Med/a Properties 31775 De Portole'Roed, Temecula. CA 92592 Project Number: PM0414 Page S ojl9 over a range of water contents to be performed and the data from the trial plotted or calculated to make a relationship from which the liquid limit is determined. The one-point liquid limit, method B, uses the data from two trials at one water content multiplied by a correction factor to determine the liquid limit. The Plastic Limit is determined by alternatively pressing together and rolling into a 3.2 mm diameter thread a small portion of the plastic soil until its'water content is reduced to a point at which the thread is crumbles and can no longer.be-pressed together and. rolled. The water content of the soil at this point is reported as Plastic Limit. Plasticity Index is the difference between Liquid and Plastic Limit. SOIL CLASSIFICATION The field classification of the soils was verified in the laboratory in general accordance with the Unified Soil Classification System. The final classification is shown on the trench logs. PARTICLE SIZE ANALYSIS The procedure is repeated for a sufficient number of water contents to establish a relationship between the dry unit weight and the water content of the soil. This data, when plotted, presents a curvilinear relationship known as the compaction curve. The values of optimum water content and modified maximum dry unit weight are determined from the compaction curve. A specimen of the soil is washed over a 75-um (No. 200) sieve. Clay and other particles that are dispersed by the wash water, as well as water-soluble materials. are removed from the soil during the test. The loss is mass resulting from the wash treatment is calculated as mass percent of the • original sample and is reported as the percentage of material finer than a 75-um (No. 200) sieve by washing. PROFESSIONAL ENGINEERS CONSULTING, Inc. • Soil Report - Pact&Med/a Properdes 31775 De Portola Road, Temecula, CA 92592 ProjectNumber:PM0414 Page 6 of 19 R-VALUE This test method covers the procedure for testing both treated and untreated laboratory-compacted soils or aggregates with the stabilometer and expansion pressure devices to obtain results indicative of performance when placed in the base, subbase, or subgrade of a road subjected to traffic. It is used to determine the structural section of asphalt concrete pavement. FIELD OSSERVAT/ON Based on field observations from the samples obtained from the four 10 feet deep • trenches, we can present the following: The subsurface consisted of partially disturbed soil within the top 2.5 feet, mainly from demolishing the old structures. Some random debris of rubbles were observed within this depth. This layer was underlain by dense sandy silty soil, becoming veryAense at 5 feet. This unit consists of fine-grained floodplain deposits, mainly sands, silts, and some clay. These sediments are unconsolidated on the upper few feet; they are typically dense at lower depths. Generally, the subsurface of the site consists of young alluvium (map symbol: Qya). Groundwater was not encountered in our trenches. CONCLUSIONSAND RECOMMENDATIONS It is our opinion that subject property can be developed by using conventional and deepened footings with grade beams and slab-on-grade floors, provided that our enclosed conclusions and recommendations are implemented into the design criteria • and project specifications. PROFESSIONAL ENGINEERS CONSULTING, Inc. • Sol/Report PadAc Med/a Properties 31775 De Portola Road. Temecula, CA 92592 Project.Number:PM0414 Page 7of19 However, our conclusions at this time are preliminary and are subject to review and modification after reviewing the final plans and design specifications. FOUNDATION DES/GN RECOMMENDATIONS • All exterior-building footings should. be founded at a minimum depth of 24 inches below the lowest adjacent final grade. Interior footings may be founded at a minimum depth of 24 inches below the lowest adjacent final grade. This, value is applicable for a 2 story building.. Extra 12 inches-of.depth will'be required for each additional story. • • Continuous footings should be reinforced with 4 No. 4 bars, 2 at every one foot. • Exterior- isolated pad.footings intended.for..support of roof overhangs.such as patio. covers should be a minimum of 24 inches square, and founded at a minimum depth of 48 inches below the lowest adjacent final grade. The pad .footings should be reinforced with No. 4 bars spaced 18 inches on centers, both ways, near the bottoms of the footings. • Living area concrete floor slabs should be a full 5 inches thick an underlain with 3 inches of clean sand or gravel. All slabs should be reinforced with No. 3 bars spaced 18 inches on centers, both ways. All slab reinforcement should be supported on concrete chairs or bricks to ensure the desired placement near mid depth. Rebars should be No. 3 and spaced 18 inches • Living area floor slabs should be underlain with a moisture vapor barrier consisting of a polyvinyl chloride membrane such as 6 mil Visqueen, or equivalent, placed on top of the 2-inch sand. At least 2 inch of clean sand should be placed over the membrane to promote uniform curing of the concrete. • PROFESSIONAL ENGINEERS CONSULTING, Inc, • So//Report Pad&Media Properties 37775 De Porto/a Road, Temecula, CA 92592 Project Number:PM0414 Page 8.of.19 • Garage floor slabs should be a full 5 inches thick and underlain with 4 inches of clean sand or gravel. Garage and parking slabs should be reinforced in a similar manner as living area slabs and poured separately from adjacent wall footings with a positive separation maintained with 3/8-inch minimum felt expansion joint materials, and then quartered with weakened plane joints. A 12-inch wide by 24- inch deep grade beam should also be provided across garage entrances. The grade beam should be reinforced with four No. 4 bars, two top and two at every one foot. • Prior to placing concrete, the subgrade below all living area and garage slabs should be presoaked to achieve a moisture content that is 30 percent or greater above • optimum moisture content. This moisture content should penetrate to a minimum depth of 12 inches into the subgrade ALLOWABLE FOUNDATION PRESSURE The allowable foundation pressure value is 1.500 psf for footings having a minimum width and depth of 12 inches. An increase of twenty percent shall be allowed for each additional foot of width of depth to a maximum value of three times the designated value. Additionally, an increase of one third shall be permitted when considering load combinations.including wind or earthquake loads. The above values are based on footings placed directly against compacted fill. In the case where footing sides are formed, all backfill against footings should be compacted to at least 90 percent of maximum dry density. • PROFESSIONAL ENGINEERS CONSULTING, Inc. • Soll Report Pad&Med/a Properties 31775 De Portola Road. Temecula. CA 92592 Project.Number:PM0414 Page 9 of19 LATERAL RESISTANCE A passive earth pressure of 150 pounds per square foot per foot,of-depth.may be used to determine lateral bearing resistance for footings. Lateral sliding resistance coefficient should be 0.25. The above values are based on.footings placed directly against bedrock or compacted fill. In the case where footing sides are formed, all backfill against footings should be compacted to at least 90 percent of maximum dry density. SETTLEMENT • The majority of total and differential settlements are expected to occur during construction or shortly thereafter as building loads are applied. However, should-there be any ground shaking, some small seismically induced settlements may:occur. Due to the fact that the site is within an area with the potential for liquefaction, we recommend a conservative approach .by the structural engineer and performing liquefaction study to determine proper valuefor-the settlement. EARTHWORK AND GROUND PREPARATION All earthwork and grading should be performed in accordance with all applicable requirements' of the grading code of the city of Temecula, California, and the recommendations provided below: • For any area used for structure, surface must be over-excavated for a minimum of 4 feet below the existing grade and recompacted for 90% of laboratory maximum density. The overexcavation must-be extended-to a minimum .or.5 feet-beyond the boundaries. • PROFESSIONAL ENGINEERS CONSULTING, Inc. • Sol/Report Pad&Media Properdes 31775 De Porto/a Road. Temecu/a, CA 92592 Project Number: PM0414 Page 10 of 19 • For any area used for parking, surface must be over-excavated for a minimum of 2.5 feet below the existing grade and recompacted for 90% of laboratory maximum density. The overexcavation must be extended to a minimum of 5 feet -beyond the boundaries. • Prior to placing fill, all areas to receive fill. should first be scarified, watered or air dried as necessary to achieve near optimum moisture conditions, and then recompacted•in•place for 900/o: • For proposed driveway and parking subgrade areas, all base material shall be compacted for 95% of laboratory maximum density. • • The soilmust be -moisture conditioned to achieve-no more-than 3% higher than optimum moisture content. • Fill soils shall be placed in 8-inch lifts, moisture conditioned and compacted to the required level of compaction. • All significant weeds or rootlets should be stripped and removed offsite. • All cobbles and gravels over 8" diameter must be removed from the pad or any backfilling area. • Stockpile soil materials that-are to be used as fill should be cleared of any unsuitable materials prior to placement as properly compacted fill. IMPORTED SOILS Imported. soils should, consist of clean materials void of trash, organic and similar deleterious materials, and rock exceeding a maximum dimension of 8 inches. • PROFESSIONAL ENGINEERS CONSULTING, Inc. • So//Report Pad&Med/a ProperHer 31775 De Porto/a Road, Temecula, CA 92592 Project Number:PM0414 Page!I of 19 The imported soil should also exhibit an expansion potential of low expansion, as determined in accordance with UBC Standard Test No. 29-2. A representative of this firm should approve prospective import soils before transporting to the site. The grading contractor should accommodate sufficient time for performing the above tests, prior to importing soil materials. PILL PACEMENT AND TEST/NG All fills should be placed in 8-inch-thick maximum lifts, watered or air-dried as • necessary to achieve near optimum moisture conditions, and then compacted in-place to a minimum relative compaction of 90% for the pads and 95% for the base material for driveway and.parking areas.. The laboratory maximum dry density and optimum moisture content-for each change in soil type should be determined in accordance with Test Method ASTM D 1557-91. A representative of this firm should be present onsite during grading operations to verify proper placement and adequate compaction of all "fills, as well as to verify compliance with the other geotechnical recommendations presented herein. EFFECTS OF GRADING ON ADJOINING PROPERTIES Based on our site observation, the proposed grading and construction will not adversely affect the geotechnical stability of adjoining properties provided that grading and construction are performed in accordance with the recommendations presented .herein. • PROFESSIONAL ENGINEERS CONSULTING, Inc. • Soil Report Pad&Media Properties 31775 De Portola Road, Temecula, CA 92592 Project Number:PMO$14 Page 12 of 19 Should there be any anticipation regarding this issue, it will be the responsibility of the grading contractor to contact our firm and the owner before starting the job or during the construction. Otherwise we can not take any responsibility. POST-GRAD/NG CONSIDERATIONS PAD,DRAINAGE Positive drainage devices consisting of sloped concrete flatwork, area drains, and graded-earth swales-have been designed-foi- the site. The purpose of these devices is to reduce water infiltration into the subgrade, and to direct surface waters away from building foundations, walls and sloped areas. The homeowner is advised that all • drainage devices should be properly maintained throughout the lifetime of the development. UTILITY TRENCH BACKPILL All utility trench backfill should be compacted to a minimum relative compaction of 90 percent. Trench-backfill materials-should-be-placed-in'lifts -no greater than 8 inches in thickness, watered or air dried as necessary to achieve a moisture content that is 2 to 3 points over optimum moisture content, and then mechanically compacted in place to a minimum relative compaction of 90 percent. Where exterior and/or interior utility trenches are proposed parallel to any building footing, the bottoms of these trenches should not extend below a 1:1 plane projected downward from the bottom edge of the adjacent footing. Where this condition occurs, the adjacent footing should be deepened or the utility constructed and batkfilled prior to-constructirfg'the-footing. A representative of this firm should be notified 48 hours in advance to verify adequate • compaction of the backfill. PROFESSIONAL ENGINEERS CONSULTING, Inc. • Sol/Report PadRc Med/a Properties 31775 De Portola Road. Temecula, CA 92592 Project Number:PM0414 Page 13 of 19 SITE CLEARING All soil, vegetation, and rock debris excavated from stripping and foundation trenches are to be disposed:offsite.in a proper. manner..This also includes.refuses such as-bushes, organic material, stumps and construction debris. No debris or reject materials from the excavations are to be placed on the slope behind the retaining walls or used as backfill. FOOTING OBSERVATIONS All footing trenches should be observed by a representative of this firm to verify that they have been excavated into competent .bearing materials. These observations • should be performed prior to the placement of forms, reinforcement, or concrete. The excavations should.be.trimmed_neat, level..and.square.. All.loose.. sloughed..or.moisture- softened soils and/or construction debris should be,removed prior to the placement of concrete. Excavated soils derived from footing and utility trenches should not be placed in slab-on-grade areas unless they are compacted to at least 90 percent of maximum dry density. SOL UBL E SULFA TE ANAL YSES Per UBC standards, type V cement with 2,500 psi and 0.5 water content ratio is recommended. MASONRY GARDEN WALLS Footings for masonry garden walls on level ground should be embedded at a minimum depth of 12 inches below the lowest competent soil material. All footings should also be reinforced with a minimum of four No. 4 bars. two top and two bottom. In order to mitigate the potential for unsightly cracking related to the • possible effects of differential settlement and/or expansion, construction joints should also be provided in the garden walls at each corner and at horizontal intervals of at PROFESSIONAL ENGINEERS CONSULTING, Inc. • Soil Report PadAc Med/a Properdel 31775 De Portola Road, Temecula, C4 92592 Project Number.PM0414 Page 14 of 19 least 20 feet. The separation should be provided in the blocks and not extend through the footings. The footings should be poured monolithically with continuous rebars to serve as effective "grade beams" below the walls. EXTERIOR CONCRETE FLA TWORK To reduce the potential of unsightly cracking related to the effects of soils, concrete sidewalks and patio-type slabs should be at.least 4 inches thick and provided with saw cuts or expansion joint every 6 feet or less. Concrete driveway slabs should be at least 6 inches thick and provided with saw cuts or expansion joints every 10 feet or less. REINFORCEMENT Consideration should be given to reinforcing all concrete patio-type slabs, driveways and sidewalks greater than 5 feet in width with No. 3 bars spaced 18 inches on centers, both ways. The reinforcement should be positioned near the middle of the slabs by means-of_concrete _chairs .or._brick. iAll_cold .joints should_be_,provide -with. dowels consisting of No. 3 bars, 24 inches in length, and spaced 18 inches on center. SUBGRADE PREPARATION As a further measure to mitigate cracking and/or shifting of concrete flatwork, the subgrade soils below concrete flatwork should be thoroughly moistened prior- to placing concrete. The moisture content of the soils should be about 130 percent of optimum moisture content and penetrate to a depth of approximately 12 inches below the bottom of the slabs. • PROFESSIONAL ENGINEERS CONSULTING, Inc. • Soll Report Pad&Media Properties 31775 De Portola Road, Temecula, CA 92592 Projecl Number:PM0414 Page 15 of 19 EDGE BEAMS Where the outer edges of concrete flatwork such as patios and driveways are to be bordered by landscaping, consideration should be given to the use of edge beams (thickened edges) to mitigate infiltration of water under the slabs. _Edge beams should be 6 to 8 inches wide, extend 12 inches below the tops of the finish slab surfaces, and be reinforced with a minimum'of two No. 4bars. one top and one bottom. • FUTURE IMPROVEMENTS Should any new structures or improvements be proposed at any time in the future other than those-shown on the enclosed site plan'and discussed herein, our firm should be notified so that we may provide design recommendations to maintain the integrity of the new improvement. Potential problems can develop when drainage on the pad is altered in any way (i.e., excavations or placement of fills associated with construction of new walkways, patios, garden walls and planters). Therefore, it is recommended that we be engaged to review the final design drawings, specifications and grading plan prior to any new constructions. If we are not given the opportunity to review these documents with respect to the _geotechnical aspects of new construction and grading, we can take no responsibility for misinterpretation of our recommendations presented herein. • PROFESSIONAL ENGINEERS CONSULTING, Inc. • Soll Report Pad&Med/a Properties 3177S De Portola Road. Temecula, CA 92592 Project Number:PM0414 Page 16 of 19 CONCRETE AND ASPHALT PAVEMENTS PRELIMINARY ASPHALTIC CONCRETE PAVEMENT DESIGN Following Asphaltic concrete pavement sections have been computed in accordance with the State of California design procedures. Subgrade soil immediately below the aggregate base (base) should be compacted to a minimum of 90 percent relative compaction based on ASTM Tea-Method-D1557 to a minimum depth of 24 inches. • Final subgrade compaction should be performed prior to placing base or Asphaltic concrete and after all utility trench backfills have been compacted and tested.' Base materials should consist of Class 2 aggregate base ( not miscellaneous) conforming to Section 2&1.02B of the St California. Standard Specifications or crushed aggregate base conforming to Section 200-2 of Standard Specifications for Public Works -Construction (Greenbook). Base materials should be compacted to a minimum of 95 percent relative compaction based on ASTM Test Method 0157. The base materials should be at or slightly below optimum moisture content when compacted. Asphaltic concrete materials and construction should conform to Section 203 of the Greenbook. • PROFESSIONAL ENGINEERS CONSULTING-, Inc. Soll Report Pad&Medla Propertlet 31775 De Portola Road. Temecula. CA 92592 Projeel.Nuntber:PM0414 PagelZ0j19 STRUCTURAL PAVEMENT SECT/ON TI = 5 R-Value 62 AC thickness: 4 inches minimum Road Base Thickness: 6 inches minimum • R value and additional verification for-the TI The following are our recommendation for the structural pavement'sections: Based on the onsite soil condition, 2.500 psi and Type V cement and 0.45 water cement ratio shall—be .used-.in .concrete. All joints (longitudinal, construction and expansion) should be in accordance with current specifications. Currently due to changeability of the onsite soil during the grading and also possibility of importing soil, the R- Value and.sulfate tests on the soil for the pads, driveways, and parking areas will be subject to some modification. In order to' obtain a proper concrete type and pavement design, we recommend performing confirmatory R- Value and sulfate test during grading the pads and parking area, followed by TI and pavement section design. • PROFESSIONAL ENGINEERS CONSULTING; Inc. • Sol/Report Padfic Medla Propertler 31775 Die Portola Road, Temecula, CA 92592 Project Number:PM0414 Page IS ojJ9 CEO TECHNICAL OBSERVAT/ON 6 TEST/NC Several observations, site inspections, meetings, and testing will be required throughout the construction, followings are the typical items: o Pre-construction meeting. o Bottom inspection of all overexcavations. .o During the compaction of overexcavated area and the precise.grade. o Footing.excavations, prior to the pouring of concrete. o After presoaking the slabs upgrade and prior to pouring concrete slabs. • o During the construction of area drain and utility,trenches. o During the placement of subgrade for parking and driveways. o During the placement'of the base material'for the parking and "driveway. o When any unusual conditions are encountered during any construction operation subsequent to this report. All inspections are subject to a minimum of prior 24 hours notice (within working day period): Pre-grade meeting is subject'to a minimum of two working days notice. To avoid any possible delays or misinterpretations, a representative of our firm must be notified to attend the pre-construction meeting with the grading contractor and city inspector.to review the.grading plans>and the soil report and site.condition and discuss potential changes prior to proceeding grading. We cannot take any responsibility for changes if we are not given the opportunity to attend the pregrade meeting and also review the grading plans and foundation plans prior to the construction. • PROFESSIONAL ENGINEERS-CONSULTING, Inc. • Soil Report Pad&Media Properdet 31775 De Porto%Road, Teinecu/a, CA 92592 Project.Number:PM0414 Page l9.of 19 LIMITATIONS The geotechnical assessment activities presented in this report have been conducted in accordance with current practice and the standard of care exercised :by geotechnical consultants performing similar tasks in this area. No warranty, expressed or implied, is made regarding the conclusions, professional opinions, and recommendations expressed in this report. 'The,conclusions are based solely upon an analysis of the conditions as observed by our personnel and as reported to use by regulatory agencies and other named sources are and also based on surface • and subsurface conditions present and our present state of geotechnical knowledge. They are not meant to imply a control of nature. If actual conditions differ from those described in this report, our office should be notified. The usage of this report in any independent form cannot be approved unless specific, written verification of the applicability of the recommendations is obtained from our firm. The services provided in this report are only to provide geotechnical characteristics of the subsurface, based on our field data and observations only and also following the ASTM standards. By accepting this report, the client will agree that we are not responsible for reviewing any private investigation that may have been performed'at the site or surroundings and not released to public agencies, particularly by the Homeowner Association or leading property management company. We take no responsibility for any matter that is not disclosed to us prior or during our studies. • PROFESSIONAL.EN6INEERS_CONSULTING, Inc. . • APPENDIX " " TRENCH LOGS PROFESSIONAL.ENGINEERS CONSULTING, Inc. APPENDIX "A" • FIGURES & MAPS • r4 !alley Mine tbardr, r P1 A'Mo tY �`. 3 ' "�aq� \ \� Y (?4 r 5 02 o r� % {r e TEMEC' `L'PA1 m ' ' a c ElEmntar/schad � 1'40JAebe'� - °a,e 5�s .177S De Portob Rdlid 6reataips RM Cslb � Pednq_ 0c4Q'N'� � Gp-i H1ypaza Ar �_� __- ® '?`YalhurA Gcarert <nl �• a uR w> f p• 4bla `1V c�trtN £ \r�.Gado� �PAp� 7fr N14 74J �i l Vy 5jtb dry H" TmicclhCreeklnna ",a+0 41yv 16hurf"aaltChb SITE LOCATION 31715 De Portola Road, Temecula, CA 92592 PROFESSIONAL ENGINEERS CONSULTING, Inc. H Project No. PM0414 Figure: 1 I n o a � — — nY --- — ----------------J I • 1••• ivcYll CC+It T.! T6 T3 U0�^ " o d T 2 f r . - F I III fora.PIMI r SPaa5: 119 131I >5 ..I O—•� r I II• ° 12, JI 50Ff, I D 7Z n of ••I.I I O :-;•:-: T 4 � T t aa:. • r •\ • I •'� — r`s aar. �I 'T "ri��j.� •\ _ �� .Q� `tom'— _ � v�� 'I ' �' I I �I SITE MAP - SAMPLING LOCATIONS 31775 De Portola Road, Temecula, CA 92592 PROFESSIONAL ENGINEERS CONSULTING, Inc. Project No.: PM0414 Figure: 2 Figure PS-1 • Seismic Hazards CITI OF\EMFLULA GENERAIPIAN Legend OLiquefaction Hazard Zones Estimated Fault Locations h`mt`"a r Camel O1 5 lNttts / Wcaude • Temecula City Boundary ➢ i ` ��• Sphere of Influence Boundary I i planning Area Boundary •M., �./ I 5➢vrr TenemCa G5.rJ CaamY2na7!-JArmlm ➢ i l f P r w I a � � 4 % f �--------- I • i p \ i r• f �. • o s.oao lo,oao CITY OF TEMECULA SEISMIC _Feet HAZARD MAP rr�� PROFESSIONAL ENGINEERS CONSULTING, Inc. Project No.: PM0414 Figure: 3 2 1d '� 2 V s rya e- t L , MzU 1 �' �� ..-, rs .rr, Kgb aps50 1 50 , ,\` 2Qyc AJ GEOLOGIC MAP 31775 be Portola Road, Temecula, CA 92592 PROFESSIONAL ENGINEERS CONSULTING, Inc. H Project No.: PM0414 Figure: 4 PROFESSIONAL ENGINEERS CONSULTING, Inc. • TRENCH LOG Surface Elevation:NA Logged By:SS Trench Orientation:EW Date:04-8-14 -rl Trench Dimensions:WNW Equipment: Backhoe Grmaiduater Depth:NA 'ILis log is a tepa iuuion of stdrnrfacc conditions at the time&Place of excavation. SAMPLE ENGINEERING Y 9 CLASSIFICATION AND DESCRIPTION �t- 0-L5' sin _ Brown sandy silt,loose artificial fill,dry X - 52• +-4S+ col -5'0 Brown sandy silt,medium dense,damp 4.5'-1 0.0' sin Brown sandy silt with some thin layers ofclay,dense, moist 10.0 Cemented at 5 feet Heavily cemented at 6.5 feet and below 15.0 • Loose Soi I Ground surface 5.0 Trench profile Native Soil 10.0 15.0 Location&Situation: Surface Gradient:NA 31775 De Remola Road Terrxatda. CA 92592 stain:- ft.flnch Project No,: 1"= 5.0, PM0414 • PROFESSIONAL ENGINEERS CONSULTING, Inc. • TRENCH LOG Surface Elevation:NA Logged By:SS Trench Orientation:EW Date:04-8-14 T2 Trench Dimensions:2x10x10 Equipment:Backhoe Gromut%vter Depth:NA 'Ibis log is a mprreeaumion of subsanC=conditions at the time @ place of excavation. SAMPLE 3 ENGINEERING Y CLASSIFICATION AND DESCRIPTION O sm. _ 0.-35' Brown sandy silt,loose artificial fill,some rubbles,dry X - sm -50 3.5'-5.0' Brown sandy silt,medium dense,damp sm - 5.0'-1 0.0' _ Brown sandy silt with sonic thin layers orclay,dense,moist, 10.0 Cemented Heavily cemented at 7.5 feet and below 15.0 • t Loose Soil Ground surface 5.0 Trench profile Native Soil 10.0 15.0 Location& Situation: Surface Gredirnt:NA 31775 De Aorrole Road Temecula. CA 92592 scale:- ft./inch Pmjcct No.: I"=5.0, PM0414 • PROFESSIONAL-ENGINEERS.CONSULTING,. Inc.. • TRENCH LOG Surface Elevation:NA Logged By:SS Trench Orientation:EW Date:04-8-14 T3 Trench Dimensions:WNW Equipment:Backhce Groundwater Depth: NA 'ILis log is a re{nexowian of aAMnfwe Mditious at the: . time'&,place of excavation. SAMPLE " ENGINEERING Y w CLASSIFICATION AND DESCRIPTION Brown sandy silt, loose to medium dense,dry X sm 5.0 5 S - Brown sandy silt,medium dense,damp sm - 2N--10:0' _ Brown sandy siltwith some thin4ayers of clay,dense; moist 10.0 Cemented Heavily cemented at 6.0 feet and below I5.0 Loose Soil Ground surface 5.0 Trench profile Native Soil 10.0 15.0 Location&Situation: Surface Grudicut:NA 31775 Die Porto%Road Temecula, CA 92592 state:- fl./Inch Ptoiat No.: PM0414 • PROFESSIONAL ENGINEERS CONSULTING, Inc. • TRENCH LOG Surface Elevation:NA Logged By:SS Trench Orientation:EW Date:04-8-14 T4 Trench Dimensions: 2z IOx 10 Equipment: Backhoe Groundwatv Depth:NA 'this lug is a teptcsmntion of••u baMace oonditimn at U= time R.n1acc of escalation. SAMPLE " ENGINEERING Y CLASSIFICATION AND DESCRIPTION r- sm 0- 1— Brown sandy silt,loose to medium dense, dry X — Ful 5.0 1.5— —2S Brown sandy silt,medium dense, damp sm — 2.5'—10.0' Brown sandy silt with some thin layers of clay,dense,moist 10.0 Cemented Heavily cemented at 6.0 feet and below 15.0 • R Loose Soil Ground surface 5.0 Trench profile Native Soil 10.0 15.0 Location&Situation: Surface Cnadieru:NA 31775 De Porfola Roed TemewlA CA 92592 scam:— ft./Inch Pmject No.: 1 =5.0, PM0414 • PROFESSIONAL ENGINEERS CONSULTING, Inc. • TRENCH LOG Surface Elevation:NA Logged By:SS Trench Orientation: EW Date:04-8-14 T5 Trench Dimensions:WWI) Equipment:Backhoe Gmuadv=cr Depth:NA 'Ibis tog is a represenumon of srbsuff=conditions at the time&.plaw of excavation. SAMPLE z ENGINEERING y $ W CLASSIFICATION AND DESCRIPTION MI. 0-215' Brown sandy silt, loose to medium dense,dry X - sm 5.0 Brown sandy silt with some thin layers of clay,dense,moist sm Cemented 10.0 Heavily cemented at 7.0 feet and below I5.0 • Loose Soil Ground ' surface 5.0 Trench profile Native Soil 10.0 15.0 Location&Situation: Surface Gradient:NA 31775 De Porrola Road Temeiada CA 92592 Scale:- R./Inch Project No.: I-=5.0' PM0414 • PROFESSIONAL ENGINEERS CONSULTING, Inc. • TRENCH LOG Surface Elevation:NA Logged By:SS Trench Orientation: EW Date:04-8.14 T6 Trench Dimensions:2XIOxlO Equipment:Backhoc Croaadwater Depth:NA 'this tog isa myreaanliVion of mbs .r r.caoditiomat the time@ place of excavation. SAMPLE Y ENGINEERING 9 CLASSIFICATION AND DESCRIPTION sm Brown sandy silt, loose to medium dense,some rootlets within top X — 12 inches,dry 5.0 sm - - 2S+_10.01 — Brown sand-silt mix with some thin layers of.clay,.dense, moist Cemented ml 10.0 Heavily cemented at 7.0 feet and below 15.0 • Loose t Soil Ground surface 5.0 Trench profile Native Soil 10.0 15.0 Location&Situation: Surface Gredicnt:NA 31775 De Portole Roed Teme l^ CA 92592 scats— R./Inch Ptoiat No.: I = 5.0' PM0414 • PROFESSIONAL ENGINEERS CONSULTING, Inc. APPENDIX "$" • LABORATORY RESULTS AND ANALYSES PROFESSIONAL ENGINEERS CONSULTING Inc. PLASTICITY TEST 31775 De Portola Road Temecula, CA 92592 ATTERBERG LIMITS Particles passed,#-200 sample Liquid Limit Plastic Limit Plasticity Index Tl @ 1.0 to 5.0' 48 36 12 Soil Classification: SILT (ML) • 60 Plasli�f �aE! z 00001� 4L 30 �cfor P ? 1 G � i � a 20 Mki oa Oki 10 oe • 7 - ML«+OL Is I 00 10 1620 30 40 SO 60 70 60 90 100 110 LIQUID LIMIT ILL) • PROFESSIONAL ENGINEERS CONSULTING Inc. PLASTICITY TEST 31775 De Portola Road Temecula, CA 92592 ATTERBERG LIMITS Particles passed N 200 Sample Liquid Limit Plastic Limit Plasticity Index B2 @ 1.0 to 5.0' 40 35 5 • Soil Classification: SILT (ML) 60 Plauffe C/�Bfl M 50 . a i >11 W {{ e O 40 2 G r 30 u � � V a 20 a. GIS OH �' �. MH 10 - ML OL 1 00 10 16 20 3D 40 'so 60 7D W 90 100 110 L IOUID LIMIT (LL) • PROFESSIONAL. ENGINEERS CONSULTING Inc. PLASTICITY.TEST 31775 De Portola Road Temecula, CA 92592 ATTERBERG LIMITS Particles.passed N 200 Sample .Liquid Limit Plastic Limit ..Plasticity Index B4 @ 0.0 to 5.0' 50 35 15 • Soil Classification: SILT (ML) �, P/gsdCf Cl��l M 50 bi O_ 40 r > / G . / >o u 4 2O ,/ MH oh OH' 10 - M MLC 4 - i 00 10 16 V 30 - "40 '50 60 70 .80 .so 100 110 LIQUID LIMIT (LU - • PROFESSIONAL ENGINEERS CONSULTING-Inc. PL MC/TY TEST 31775 De Portola Road Temecula...CA.92592. ATTERBERG LIMITS Particles passed N 200 Samule Liquid Limit Plastic Limit _Plasticity Index • T6 @ 1.0 to 5.0' 35 25 10 Soil Classification: SILT(ML) �, Ples�ci •Cher!' 00000/ O 50 xv tt. O +0 V 2 G� 3o u N O� a zo i` � a io I . 00 10 1620 so +0 00 60 '70 so 90 100 110 LIWID LIMIT ILL) PROFESSIONAL ENGINEERS CONSULTING, Inc. PAR TICL SIZE ANALYSIS PROJECT NUMBER: PM0414 SITE: 31775 De Portola Road, Temecula, CA 92592 SAMPLE: T-1 DEPTH: 1.0 -6.0 ft. SIEVE ANALYSIS HYDROMETER ANALYSIS. CLEAR SIEVE I U.S.STANDARD SIEVE NUMBERS ..I OPENINGS r r s 1r2• a o ao so 1 fo. oo too 0 • 90 10 F 80 20 (7 70 i I 4I •_ 30 >4 80 40 G c� oar so so e 40 � 90' oc 90 • IEE� 70 w 20Tgr a a.• 10 - -- 90 0 100 100 10 1.0 0.1 0.01 0m1 PARTIQ.E DIAMETER IN MM CWAVM SAND COH9IJl.4' SILT AND CLAY FRACTION m® 0m ® ondlum tim • PROFESSIONAL ENGINEERS CONSULTING, Inc. PART/CL SIZE ANALYSIS PROJECT NUMBER: PM0414 SITE: 31775 De Portola Road, Temecula, CA 92592 SAMPLE: T-2 DEPTH:1.0 -6.0 ft. 1aPARsw,m lussTANDARDSENBNUMBFRs I OPENINGS 3' rl.5' 1'. trr ao oo tooa Mill iIII I 00 10 [r s0. 20 C� Q 70 90 io C0 00 40 G CO � 5p 50 _- F [r �o oo C Z 90 ' 70 W 20 so a 10 . 00 0 ' 100 100 10 1.0 0.1 0.01 0.1m PABTICL DL"WMR IN MM CMA%'= BAWD C�B81.E9 SLLT AND CLAY 19IACDON • ® 0m ® �m Me .. PROFESSIONAL ENGINEERS CONSULTING, Inc. PAR TICL SIZE ANALYSIS PROJECT NUMBER: PM0414 SITE: 31775 De Portola Road, Temecula, CA 92592 SAMPLE: T-3 DEPTH: 1.0 -6.0 ft GEAR SIEVE- I U.S STANDARD SIEVE NUMBERSOPENINGS I U2' 4 0 0 00 t 0' 00 f00 0 • 00� � 10 BO 20 70 30 m >4 00 40 0 w m S0 s0 F 40 � � . 80 per, 90 ' 70 OC 20 BO 10 90 0 ' 100 100 10 1.0 0.1 0.01 0.001 PARTICI DIAMETER BV MM �lAVM SAND OOBIif PY Stl.T A!ID CLAY PRACI7@I z4 Me • PROFESSIONAL ENGINEERS CONSULTING, Inc. PART/CL SIZE ANALYSIS PROJECT NUMBER: PM0414 SITE: 31775 De Portola Road, Temecula, CA 92592 SAMPLE: T4 DEPTH: 1.0 -6.0 ft. ICIGAR SIEVE I U.S.STANDARD SIEVE NUMBERS I . OPEZ41NG4 • 2 .a• +rr a 0 0 0 1f0 oo • 100 - o YO ! 10 so 20 70 , 30 CI '+ 00 • 40 Q 0� ao � so Lr7 _ I 40 so Ix ma so , 70 L W Zp so P. 10 — oo o � 1ao 100 10 1.0 0.1 0.01 0.001 PARTICLE DIAMETER W MM �A"L SAND_ oaoielrs soa ADID a.11r PRArnoN o® em ® ®wm 0m Water Quality Management Plan (WQMP) Temecula Medical Office Building • Appendix 4: Historical Site Conditions Phase I Environmental Site Assessment or Other Information on Past Site Use • • _44_ Water Quality Management Plan (WQMP) Temecula Medical Office Building Appendix 5: LID Infeasibility LID Technical Infeasibility Analysis lUo �Arr�/ca��e _45 _ Water Quality Management Plan (WQMP) Temecula Medical Office Building Appendix 6: BMP Design Details BMP Sizing,Design Details and other Supporting Documentation • • -46- Flool 7-9ZI.fo• l QDAG_ �andscq�e : J D Z ¢3, 74 A71 pmh Conc�a��/Qs�i4f7� /7, 2S/ Z� = a.. 76 DM145 totg114rca. = 14, laof-g- L9 :F;�. Feitll loP: 7, 070 Con�r�t� s��/t• 389 GQ•�d qr� . �, 7D7_ 400 Ef �'— 14; /6,6 TF = D•S7 • Santa Margarita Watershed Required Entries BMP Design Volume, VBMp (Rev.03-2012) Legend. Calculated Cells (Note[his%Norkshwt shall only be used in conjunction a-ith BMP designs I}om du LID BMP Design Handbook) Company Name Medofer Engineering Inc. Date 10/8/2015 Designed by Mike Medofer County/City Case No PA14-0107 Company Project Number/Name 3212-Temecula Medical Office Building Drainage Area Number/Name DMA 1 Enter the Area Tributary to this Feature AT= 1 acres 85's Percentile,24-hour Rainfall Depth, from the Isobyetal Map in Handbook Appendix E Site Location Township 8 South Range 2 West Section 17 Enter the 85'Percentile,24-hour Rainfall Depth D85= 0.97 Determine the Effective Impervious Fraction Type of post-development surface cover Mixed Surface Types (use pull down menu) Effective Impervious Fraction It= 0.79 • Calculate the composite Runoff Coefficient, C for the BMP Tributary Area Use the following equation based on the WEF/ASCE Method C =0.8581f-0.78117+0.774Ir+0.04 C= 0.59 Determine Design Storage Volume,VBw Calculate Vu,the 85%Unit Storage Volume Vu=D85 x C V.= 0.57 (in*ac)/ac Calculate the design storage volume of the BMP, VBmtp. VBMP(ft)= Vu(in-ac/ac)x AT(ac)x 43,560(ft/ac) VBW= 2,069 ft 12(in/ft) Notes: • Bioretention Facility - Design Procedure - --BMP 1D — Required Entries BMPi - Legend: Calculated Cells mpany Name: Medofer Engineering Inc. Date:! 10/8/2015 Designed by: Mike Medofer County/City Case No.:IPA 14-0107 Design Volume Enter the area tributary to this feature Ark I acres Enter VBt p determined from Section 2.1 of this Handbook VBi,I i 2,069 ft Type of Bioretention Facility Design ® Side slopes required (parallel to parking spaces or adjacent to walkways) 0 No side slopes required (perpendicular to parking space or Planter Boxes) Bioretention Facility Surface Area Depth of Soil Filter Media Layer ds =1 1.8 ft Top Width of Bioretention Facility, excluding curb wT= 17.0 ;ft Total Effective Depth, dE dE= (0.3) x ds+ (0.4) x I - (0.7/wT)+ 0.5 dE= 1.38 ft Minimum Surface Area, Am __ VBW(W) Att= 1,496 ft` AM(ft ) dE(ft) _ _ Proposed Surface Area A=' 2,924 'ft` Bioretention Facility Properties Side Slopes in Bioretention Facility z= 4 :1 Diameter of Underdrain inches Longitudinal Slope of Site(3%maximum) % 6" Check Dam Spacing feet Describe Vegetation: Other Notes: I Riverside County Best Management Practice Design Handbook JUNE 2010 • Santa Marearita Watershed Legend. Required Entries BMP Desig n Volume, V gMp (Rev.03-2012) Calculated Cells (Note this tcorksheet shal121L be used in conjunction scith BMP designs front the LID BNIP Desien Handbook) Company Name Medofer Engineering Inc. Date 10/8/2015 Designed by Mike Medofer County/City Case No PA14-0107 Company Project Number/Name 3212-Temecula Medical Office Building Drainage Area Number/Name DMA 2 Enter the Area Tributary to this Feature AT= 0.69 acres 85's Percentile, 24-how Rainfall Depth, from the Isoh etal Map in Handbook Appendix E Site Location Township 8 South Range 2 West Section 17 Enter the 85"'Percentile, 24-hour Rainfall Depth Day= 0.97 Determine the Effective Impervious Fraction Type of post-development surface cover Mixed Surface Types (use pull down menu) Effective Impervious Fraction If= 0.78 • Calculate the composite Runoff Coefficient, C for the BMP Tributary Area Use the following equation based on the WEF/ASCE Method C=0.858If3-0.78If2+0.774If+0.04 C= 0.58 Determine Design Storage Volume,VBt� Calculate VB, the 85%Unit Storage Volume Vu=D85 x C V = 0.56 (in*ac)/ac Calculate the design storage volume of the BMP, VBMp. VBMP(ft3)= VB(in-ac/ac)x AT(ac)x 43,560(W/ac) VBMP= UO2 ft3 12(in/ft) Notes: • Infiltration Trench -Design Procedure IBW2 BMP ID Legend: Required Entries Calculated Cells • Company Name: Medofer Engineering Date: 10/8/2015 Designed by: Mike Medofer County/City Case No.: PA14-0107 Design Volume Enter the area tributary to this feature, Max= 10 acres At= 1 acres Enter VBw determined from Section 2.1 of this Handbook VBI,,> = 1,382 ft3 Calculate Maximium Depth of the Reservoir Layer Enter Infiltration rate I= 3.0 in/hr Enter Factor of Safety, FS(unidess) FS= 2 Obtain from Table 1, Appendix A: "Infiltration Testing"of this BMP Handbook n= 40 % Calculate D1. Dr = I(in/hr)x 72 hrs D1 = 22.50 ft 12(in/ft)x(n/100)x FS Enter depth to historic high groundwater mark(measured from finished grade) 15 ft Enter depth to top of bedrock or impermeable layer(measured from finished grade) 15 ft • D2 is the smaller of: Depth to groundwater- 11 ft;&Depth to impermeable layer-6 ft D2= 4.0 ft DmAx is the smaller value of D1 and D2,must be less than or equal to 8 feet. DmAx= 4.0 ft Trench Sizing Enter proposed reservoir layer depth DR,must be<_DMAX DR= 2.75 ft Calculate the design depth of water, dw Design dw= (DR)x(n/100) Design dw= 1.10 ft Minimum Surface Area, As As= VBw As= 1,256 If dw Proposed Design Surface Area AD= 1,274 fe Minimum Width = DR + l foot pea gravel 3.75 ft Sediment Control Provided?(Use pulldown) Yes • Geotechnical report attached?(Use pulldown) Yes It the vawh has Men dc,,.W cnncctl..them.hnold M nn orc..mC,e ge,un the.p.d,hcCt Riverside County BestManagemeni Practice Design Handbook JANUARY 2010DRAFr PRELIMINARY DRAFT- SUBJECT TO REVISION Santa Marearita Watershed Legend: Required Entries • BMP Design Volume, VBMP (Rev.03-2012) 1 Calculated Cells (Note this worksheet shall oil be used in conjunction with BMP designs from die LID BMP Design Handbook) Company Name Medofer Engineering Inc. Date 10/8/2015 Designed by Mike Medofer County/City Case No PA14-0107 Company Project Number/Name 3212-Temecula Medical Office Building Drainage Area Number/Name DMA 3 Enter the Area Tributary to this Feature AT= 0.33 acres 85th Percentile,24-hour Rainfall Depth, from the Isoh etal Map in Handbook Appendix E Site Location Township 8 South Range 2 West Section 17 Enter the 85's Percentile, 24-hour Rainfall Depth Day= 0.97 Determine the Effective Impervious Fraction Type of post-development surface cover Mixed Surface Types (use pull down menu) Effective Impervious Fraction If= 0.57 • Calculate the composite Runoff Coefficient,C for the BMP Tributary Area Use the following equation based on the WEF/ASCE Method C=0.8581f3-0.78If'+0.774If+0.04 C= Determine Design Storage Volume,Vats Calculate Vu, the 85%Unit Storage Volume Vu=Das x C V = 0.38 (in*ac)/ac Calculate the design storage volume of the BMP, VBMP. VBMP(ft')= Vu(in-ac/ac)x AT(ac)x 43,560(ft'/ac) VBMP= 455 f13 12(in/ft) Notes: • Infiltration Trench -Design Procedure BMP3 BMP ID Required Entries Legend: Calculated Cells • Company Name: Medofer Engineering Date: 10/8/2015 Designed by: Mike Medofer County/City Case No.: PA14-0107 Design Volume Enter the area tributary to this feature, Max= 10 acres A1= 0 acres Enter VBw determined from Section 2.1 of this Handbook VBt p= 455 ft3 Calculate Maximimn Depth of the Reservoir Layer Enter Infiltration rate I= 3.0 in/hr Enter Factor of Safety, FS(umidess) FS= 2 Obtain from Table 1, Appendix A: 'Infiltration Testing"of this BMP Handbook n= 40 % Calculate D1. Dt = I(in/hr)x 72 Ins Dt = 22.50 ft 12(in/ft)x(n/100)x FS Enter depth to historic high groundwater mark(measured from finished grade) 15 ft Enter depth to top of bedrock or impermeable layer(measured from finished grade) 15 ft • D2 is the smaller of. Depth to groundwater- 11 ft;&Depth to impermeable layer-6 R D2= 4.0 ft DMAX is die smaller value of D1 and D2,must be less than or equal to 8 feet. DmAx= 4.0 ft Trench Sizing Enter proposed reservoir layer depth DR,must be<DmAx DR= 2.75 ft Calculate the design depth of water, dw Design dW= (DR)x(n/100) Design dw= 1.10 ft Minimum Surface Area, As As= VBt� As = 414 ft2 dW Proposed Design Surface Area AD= 846 ft2 Minimum Width =DR+ 1 foot pea gravel 3.75 ft Sediment Control Provided?(Use pulldown) Yes • Geotechnical report attached?(Use pulldown) Yes It the tren.h has Ik n decipned cnrnx9c.ihcre shnulJ br na error messngev nn the spre:ulshret Riverside County BestMmmgemenl Practice Design Handbook JANUARY 2010 DRAFT PRELIMINARY DRAFT-SUBJECT TO REVISION 0 R07W R06W R05W R04W R03W R02W RO/W R01E R02E R03E R04E R05E TO1S 0 p MIm L Om T 02 S .,... 07 �• "J Rivers itlalTo N 10.E , m.•, PI9s'onPasa , 0 s 090 075 oTo ass Rivenitl•Sou Moast 0.86 sunUni om U i 0 T03S _• ON ` t,.•-•• S: .68 �. ,il \ oyo oso Prstl•9am , W.eitnst •j. 0 0. p Parrle f•�o:0 1 OA7 tit'y'� ••... T 04$ \ 055 r •��. . 015 ntleli 08.1• . 0 s 0850 0T5041 am 0. 085090 T05S 0W 0. 0 7.7 }},. O �S•M"Ib oy0/ •. 'l oss �J 0e5 I ` ,. .. SunCity WI t .r •S Des • '/ reNW n.� •• 9ama RirerW Nurke k / •To�V" •i 1083 7.17 • 1 reNWS ^ �• � r/�•p' EIC risoSbtlod' {\\ o'so' ♦• / aTS 1� 4`T5 OE5 Y• \ a• OTSA Y• •.��` •• SanO Ms7gsrits Wabnh•U S r .. \ .. . ..., .... . , \ p \ Smk•0q0 Wild aiLaC;090 T07 4 \ • '\ _og5 `\\\ /Anil ,, ,.J,,•. 0 Tc1 . 1� • I oe T f • o T 0� 1 • Rain Gags Localbns T OS S •SanbROUPbtsan T.,b q� i T ,..... • n i/ o Be `t.. _ — IVER IDE C N L 0 • CONTROL ANO WATER `••• CONSERVATION DISTRICT A9wng•Valby Isohystal Map R 07W RO6W R05W R04W R03W R02W R01W ROIE R02E R03E for the SSth Percentile 24 hour Storm Event JWy 201 I Water Quality Management Plan (WQMP) Temecula Medical Office Building Appendix 7: Hydromodification Supporting Detail Relating to complionce with the HMP Performance Standards • • -47 - Water Quality Management Plan for Temecula Medical Office Building Development No. LD15-0865 Appendix 7: Supporting Detail for Hydromodification Requirement The proposed Medical Office Building project consists of development of an approximately 2 acre property into a professional office site with related parking, hardscape and landscape areas. It is the opinion of Medofer Engineering Inc. the project does not require hydromodification mitigation for the following reasons: 1. The project is designed with minimum potential for erosion and sedimentation. All areas of the site will be paved or landscaped with drought-resistant plants and watered by a drip type irrigation system. 2. There is no drainage run-on from offsite tributary areas. With no offsite run-on, there is no potential for unimproved areas conveying sediments and/or debris into the site for conveyance downstream. 3. All drainage runoff for this site will collect in the bioretention.basin at the south portion of the site. The storm Flows will pond in the basin, allowing any sediments and debris to settle out. Storm flows will be managed by the capacity of the drop inlet and 12" PVC pipe outlet. 4. The proposed storm drain system consists of a drop inlet and 12" PVC pipe that will • connect directly to an existing Riverside County Flood Control District maintained 72" RCP culvert (MS4 facility). • 1{ M' - ��I 7` R �J .��- s`�_� •- i_ ��' �\� 4, , �. _ ,ice iL � ��•�i �i.� •� .fit ��(1�,��z.�• r AV �- 200fi, f � 800tt Riverside County SWCTT temecula mob rcfc Water Quality Management Plan(WQMP) Temecula Medical Office Building Appendix 8: Source Control Pollutant Sources/Source Control Checklist • -48- STORMWATER POLLUTANT SOURCESISOURCE CONTROL CHECKLIST How to use this workshaet (also see instructions In Section G of-the WQMP Template): 1. Review Column 1 and identify which of these potential sources of stormwater pollutants apply to your site. Check each box that applies. 2. Review Column 2 and incorporate all of the corresponding applicable BMPs in your WQMP Exhibit. 3. Review Columns 3 and 4 and incorporate all of the corresponding applicable permanent controls and operational BMPs in your WQD1P. Use the format shown in Table G.Ion page 23 of this WQMP Template. Describe your specific BMPs in an accompanying narrative,and explain any special conditions or situations that required omitting BMPs or substituting alternative BMPs for those shown here. IF THESE SOURCES WILL BE ...THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs,AS APPLICABLE ON THE PROJECT SITE ... t 2 3 4 Potential Sources of Permanent Control"how on Permanent Controls—List In WQMP Operational BMPs—Include In WQMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative O A.On-site storm drain O Locations of inlets. 0 Mark all inlets with the words O Maintain and periodically repaint or inlets "Only Rain Down the Storm replace inlet markings. Drain"or similar.Catch Basin O Provide stormwater pollution Markers may be available from the prevention information to new site Riverside County Flood Control owners,lessees,or operators. and Water Conservation District, call 951.955.1200 to verify. 0 See applicable operational BMPs in Fact Sheet SC-04,"Drainage System Maintenance,"in the CASQA Stormwater Quality Handbooks at www.cilimphandbooks.com (3 Include the following in lease agreements:"Tenant shall not allow anyone to discharge anything to storm drains or to store or deposit materials so as to create a potential discharge to storm drains." B. Interior floor drains State that interior floor drains and Inspect and maintain drains to prevent and elevator shaft sump elevator shaft sump pumps will be blockages and overflow. pumps plumbed to sartitary'sewer. O C. Interior parking El State that parking garage floor O Inspect and maintain drains to prevent garages drains will be plumbed to the blockages and overflow. sanitary sewer. T mece'da' /VeG1ic4q/ f'�� e f3�dr. STORMWATER POLLUTANT SOURCESISOURCE CONTROL CHECKLIST IF THESE SOURCES WILL BE ON THE PROJECT 817E ... ... THEN YOUR WOMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs,AS APPLICABLE O 1 2 3 4 Potential Sources of Permanent Controls how on Permanent Controls—List in WOMP Operational BMPs—Include In WOMP Runoff Pollutants WOMP Drawings Table and Narrative Table and Narrative D1.Need for future Note building design features that Provide Integrated Pest Management indoor&structural pest discourage entry of pests. information to owners,lessees,and control operators. D2.Landscape/ Show locations of native trees or State that final landscape plans will Maintain landscaping using minimum Outdoor Pesticide Use areas of shrubs and ground cover to accomplish all of the following. or no pesticides. be undisturbed and retained. O Preserve existing native trees, O See applicable operational BMPs in Show self-retaining landscape shrubs,and ground cover to the "What you should know areas,if any. aximum extent possible. for.....Landscape and Gardening"at Show stormwaterntreatment and Design landscaping to minimize http://rcfood.org/stotmwater/Emrl hydrograph modification irrigation and runoR,to promote Hyperlink reference not valid. management BMPs. (See surface infiltration where Provide.IPM information to new instructions in Chapter 3,Step 5 appropriate,and to minimize the owners,lessees and operators. and guidance in Chapter 5.) use of.fertilizets and pesticides that can contribute to stormwater pollution. Where landscaped areas are used to retain or detain stormwater,specify plants that are tolerant of saturated soil conditions. - �Consider using pest-resistant O plants,especially adjacent to hardscape. GrTo insure successful establishment, select plants appropriate to site soils,slopes,climate,sun,wind, rain,land use,air movement, ecological consistency,and plant -interactions. STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST IF THESE SOURCES WILL BE ,,, THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE,CONTROL BMPs,AS APPLICABLE ON THE PROJECT SITE ... 1 2 3 4 Potential Sources of Permanent Controls—Show on Permanent Controls—List In WQMP Operational BMPs—Include In WQMP Runoff Pollutants WQMP Drawings_ Table and Narrative Table and Narrative E.Pooh,spas,ponds, ❑ Show location of water feature and If the Co-Permittee requires pools )See applicable operational BMPs in decorative fountains, a sanitary sewer cleanout in an to be plumbed to the sanitary "Guidelines for Maintaining four and other water accessible area within 10 feet. sewer,place a note on the plans Swimming Pool,Jacuzzi and Garden features. (Exception: Public pools must be and state in-the narrative that this Fountain"at plumbed according to County connection will be made according hap://rcflood.Org/stormwaTer/ Department of Environmental to local requirements. Health Guidelines.) ❑ F.Food service O For restaurants,grocery stores;and ❑ Describe the location and features ❑ See the brochure,"Ibe Food Senice other food service operations,show of the designated cleaning area. Industry Best Management Practices for. location(indoors or in a covered ❑ Describe the items to be cleaned in Restaurants,Grocery.Stores, area outdoors)of a floor sink or this facility and how it has been Delicatessens and Bakeries"at other area for cleaning floor mats, http://rcflood.org/stormwater/ sized.to insure that the largest containers,and equipment. items can be accommodated. Provide this brochure to new site ❑ On the drawing,show a note that owners,lessees,and operators. this drain will be connected to a. grease interceptor before discharging to the sanitarysewer. G.Refuse areas 1<01how where site refuse and Mrstate how site refuse will be Sj� State how the following will be recycled materials will be handled . handled and provide supporting implemented: and stored for pickup.See local, detail to what is shown on plans. Provide adequate number of municipal requirements for sizes State that signs will be posted on or receptacles. Inspect receptacles d other details of refuse areas. near dumpsters with the words"Do regularly;repair or replace leaky If dumpsters or other receptacles not dump hazardous materials receptacles. Keep receptacles covered. are outdoors,show how the here"or similar. Prohibit/prevent dumping of liquid or designated area will be covered, hazardous wastes.Post"no hazardous graded,and paved to prevent run- - materials"signs. Inspect and pick up on and show locations of berms to litter daily and clean up spills prevent runoff from the area. immediately.Keep spill control ❑ Any drains from dumpsters, materials available on-site. See Fact compactors,and tallow bin areas Sheet SC-34,"Waste Handling and shall be connected to a grease Disposal"in the CASQA Stormwater removal device before discharge to Quality Handbooks at sanitary sewer. www.cabmphandbooks.com STORMWATER POLLUTANT SOURCESISOURCE CONTROL CHECKLIST IF THESE SOURCES WILL BE ...THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL SMPs,AS APPLICABLE ON THE.PROJECT SITE ... 1 2 .3 4 Potential Sources of Permanent Controls--Show on Permanent Controls—List In WQMP Operational BMPs—Include in WQMP Runoff Pollutants WQMP Drawings Tableland Narrative Table and Narrative ❑ H.Industrial processes. ❑ Show process area. ❑ If industrial processes are to be ❑ See Fact Sheet SC-10,"Non- located on site,state:"All process Stormwater Discharges"in the activities to be performed indoors. CASQA Stormwater Quality No processes to drain to exterior or Handbooks at to storm drain system." www.cabmphandbooks.com See the brochure"Industrial& Commercial Facilities Best Management Practices for. Industrial,Commercial Facilities"at http://mflood.org/stomwater/ STORMWATER .POLLUTANT SOURCESISOURCE CONTROL CHECKLIST IF THESE SOURCES WILL BE ...THEN YOUR WOMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs,AS APPLICABLE ON THE PROJECT SITE ... 1 2 3 • 4 Potential Sources of Permanent Controls—Show on Permanent Controls—List in WOMP Operational BMPs—Include In WOMP Runoff Pollutants WOMP Drawings Table-and Narrative Table and Narrative 0 1.Outdoor storage of 0 Show any outdoor storage areas, Include a detailed description of 0 See the Fact Sheets SC-31,"Outdoor equipment or materials. including how materials will be materials to be stored,storage Liquid Container Storage"and SC-33, (See rows J and K for covered.Show how areas will be areas,and structural features to "Outdoor Storage of Raw Materials" source control graded and bermed to prevent run- prevent pollutants from entering in the CASQA Stormwater Quality measures for vehicle on or run-off from area. storm drains. Handbooks at cleaning,repair,and O Storage of non-hazardous liquids When appropriate,reference www.cabmphandbooks.com maintenance.) shall be covered by a'roof and/or documentation of compliance with drain to the sanitary sewer system, the requirements of Hazardous and be contained by berms,dikes, Materials Programs for. liners,or vaults. • Hazardous Waste Generation O Storage of hazardous materials and wastes must be in compliance with Response and Inventals Release the local hazardous'materials Response and Inventory ordinance and a Hazardous • California Accidental Release Materials ManagementTlan for the (CalARP) site. • Aboveground Storage Tank • Uniform Fire Code Article 80 Section'103(b)&(c)1991 s Underground Storage Tank www.cchealth:org/groups/hazmat L STORMWATER POLLUTANT SOURCESISOURCE CONTROL CHECKLIST IF THESE SOURCES WILL BE ...THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs,AS APPLICABLE ON THE PROJECT SITE ... 1 2 3 4 Potential Sources of Permanent Controls—Show on Permanent Controls—List In WQMP Operational BMPs..Include in WOMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative ❑ J.Vehicle and ❑ Show on drawings as appropriate: ❑ if a car wash area is not.provided, Describe operational.measures to (1)Commercial/industrial facilities Equipment Cleaning describe any measures taken'to implement the following(if having vehicle/equipment`cleaning discourage on-site car washing and applicable): needs shall either provide explain how these will be enforced. ❑ Washwater from vehicle and covered,bermed area for washing equipment washing operations shall activities or discourage not be discharged to the storm drain vehicle/equipment washing by system. Refer to"Outdoor Cleaning removing hose bibs and installing Activities and Professional Mobile Service signs prohibiting such uses. Providers"for many of the Potential (2) Multi-dwelling complexes shall Sources of Runoff Pollutants categories ' have a paved,bermed,and covered below. Brochure can be found at car wash area(unless carwashing http://rcflood.org/sto=water/ is prohibited on-site and hoses are ❑Car dealerships and similar may provided with an automaticshut- _ rinse cars with water only. .off to discourage such use). (3)Washing areas for can,vehicles, and equipment shall be paved, designed to prevent run-on to or - runoff from the area,.and plumbed to drain to.the sanitary sewer. (4)Commercial car wash facilities _ shall be designed such that no runoff from the facility is discharged to the stoiin drain System.Wastewater from the facility shall discharge to the sanitary sewer,ora,wastewater reclamation system shall be installed. STORMWATER POLLUTANT SOURCESISOURCE CONTROL CHECKLIST IF THESE SOURCES WILL BE ... THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs,AS APPLICABLE ON THE PROJECT SITE ... 1 2 3 4 Potential Sources of Permanent Control"how on Permanent Controls—List In WQMP Operational BMPs—Include In WQMP Runoff Pollutants WQMP Drawings Table and.Narrative Table and Narrative O K.Vehicle/Equipment O Accommodate all vehicle Cl State that no vehicle repair or In the Stormwater Control Plan,note Repair and equipment repair and maintenance maintenance will be done outdoors, that all of the following restrictions Maintenance indoors.Or designate an outdoor or else describe the required' apply to use the site: work area and design the area to features of the outdoor work area. O No person shall dispose of,nor permit prevent run-on and runoff of (3 State that there are no Boor drains the disposal,directly or indirectly of stormwater. or if there are floor drains,note the vehicle fluids,hazardous materials,or O Show secondary containment for agency from which an industrial rinsewater from pans cleaning into exterior work areas where motor waste discharge permit will be storm drains. oil,brake fluid,gasoline,diesel obtained and that the design meets O No vehicle fluid removal shall be fuel,radiator fluid,acid-containing that agency's.requirements. performed outside a building,nor on batteries or other hazardous O State that there are no tanks, asphalt or ground surfaces,whether materials or hazardous wastes are containers or sinks to be used for inside or outside a building,except in used or stored.Drains shall not be parts cleaning or rinsing or,if there such a manner as to ensure that any installed within the secondary arc,note the agency from which art spilled fluid will be in an area of containment areas. industrial waste discharge permit secondary containment.Leaking 0 Add a note on the plans that states will be obtained and that the vehicle fluids shall be contained or either(1) there me no floor drains, design meets that agency's drained from the vehicle immediately. or(2)floor drains'are connected to requirements. No person shall leave unattended drip wastewater pretreatment systems prior to discharge tothe sanitary Cl containing other open containers sewer and an industrial waste containing vehicle a or iu an a such discharge permit willbe obtained. - containers are in use or in an area of secondary containment. Refer to"Automotive Maintenance&Car Care Best Management Practices for Auto Body Shops,Auto Repair Shops,Car _ Dealerships,Gas Stations and Fleet Service Operations". Brochure can be found at htm://rcflood.org./stormwarer/` Refer to Outdoor Cleaning Activities and Professional Mobile Service Providers for many of the Potential Sources of Runoff Pollutants categories below. Brochure can be found at hup;//rcf1ood.org/stomi%xud STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST IF THESE SOURCES WILL BE ...THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs,AS APPLICABLE ON THE PROJECT SITE ... 1 2 3 4 Potential Sources of Permanent Controls—Show on Permanent Control"Is1 In WQMP. Operational BMP"nclude In WQMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative (3 L Fuel Dispensing ❑ Fueling areas6 shall have ❑ The property owner shall dry sweep Areas impermeable floors (i.e.,pordand the fueling area routinely. cement concrete or equivalent smooth impervious surface)that Cl .See the Fact Sheet A St ,"Fueling are: a)graded at the minimum _ Areas"t in the CASQA Stormwater slope.necessary to prevent ponding; Quality Handbooks at www.cabmnhandbooks.com and b)separatedfrom the rest of the site by a grade break that prevents run-on of stormwater to the maximum extent practicable. - ❑ Fueling areas shall be covered bya canopy that extends a minimum of ten feet in each direction from each pump. ]Alternative:The fueling area must be covered and the cover's minimum dimensions must be equal to or greater than'the area within the grade break or fuel dispensing area'.] The canopy [or cover] shall not drain onto the - fueling area. 6 The fueling area shall be defined as the area extending a minimum of 6.5 feet from the comer of each fuel dispenser or the Imgth at which the hose and nozzle assembly may be operated plus a minimum of one foot,whichever is greater. STORMWATER POLLUTANT SOURCESISOURCE CONTROL CHECKLIST IF THESE SOURCES WILL BE ... THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs,AS APPLICABLE ON THE PROJECT SITE ... 1 2 3 4 Potential Sources of Permanent Controls—Show on Permanent Controls—List in WQMP Operational BMPs—Include In WQMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative O M.Loading Docks O Show a preliminary design for the LI Move loaded and unloaded items loading dock area,including indoors as soon as possible. roofing and drainage.Loading O See Fact Sheet SC-30,"Outdoor docks shall be covered and/or graded to minimize run-on to and CASQLoading and Unloading,"li in the runoff from the loading area. Roof Handbooks oksSto at ater Quality downspouts shall be positioned to Handbooks.at wwa•.cabmphandbooks.com direct stormwater away from the loading area.Water from loading dock areas shall be drained to the sanitary sewer,or diverted and collected for ultimate discharge to the sanitary sewer. O Loading dock areas draining directly to the sanitary sewer shall be equipped with a spill control valve or equivalent device;which shall be kept closed during periods. of operation. O Provide a roof overhang over the loading area or install door skirts (cowling)at each bay that enclose the end of the trailer. STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST IF THESE SOURCES WILL BE ...THEN YOUR WQMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs,AS APPLICABLE ON THE PROJECT SITE ... 1 2 3 4 Potential Sources of Permanent Controls—Show on Permanent Controls—List.in WQMP Operational BMPs—Include in WQMP unoff Pollutants WQMP Drawings Table and Narrative Table and Narrative N.Fire Sprinkler Test jieProvide a means to drain fire ee the note in Fact Sheet SC41, Water _ sprinkler test water to the sanitary "Building and Grounds Maintenance," sewer. in the CASQA Stormwater Quality Handbooks at www.cabmph a ndbooks.com O.Miscellaneous Drain Q Boiler drain lines shall he directly or Wash Water or Other or indirectly connected to the Sources sanitary sewer system and may not Q Boiler drain tines discharge to the stone drain Condensate drain lines Q system. Condensate'drain lines may Q Rooftop equipment discharge to landscaped areas if the Q Drainage sumps flow is small enough that runoff v will not occur.Condensate drain J� Roofing,gutters,and lines may not discharge to the trim. storm drain system. Q Other sources Rooftop equipment with potential to produce pollutants shall be Q roofed and/or have secondary containment. . Any drainage sumps on-site shall Q feature a sediment sump to reduce the quantity of sediment in pumped water. ' - Avoid roofing,gutters,and trim made of copper or oiher unprotected metals that may leach into runoff. Include controls for other sources asspecified by local reviewer. STORMWATER POLLUTANT SOURCESISOURCE CONTROL CHECKLIST IF THESE SOURCES WILL BE ...THEN YOUR WOMP SHOULD INCLUDE THESE SOURCE CONTROL BMPs,AS APPLICABLE ON THE PROJECT SITE ... 1 2 3 4 Potential Sources of Permanent Controls—Show on Permanent Controls—List in WOMP Operational BMPs—Include In WOMP unoff Pollutants WOMP Drawings Table and Narrative Table and Narrative P.Plazas,sidewalks, �{ Sweep plazas,sidewalks,and parking and parking lots. lots regularly to prevent accumulation of litter and debris. Collect debris from pressure washing to prevent entry into the storm drain system.Collect washwater containing any cleaning agent or degreaser and discharge to the sanitary sewer not to a storm drain. Water Quality Management Plan(WQMP) Temecula Medical Office Building Appendix 9: O&M Operation and Maintenance Plan and Documentation of Finance, Maintenance and Recording Mechanisms • • -49- • RECORDING REQUESTED BY: TEMECULA M.O.B., LLC 2015-0546736 (Property Owners Name) 12/17/2015 e3:06 PM AND WHEN RECORDED MAIL TO: ***Customer Copy Label*** P.O. BOX 2248 The Paper to which this label is affixed has not been compared with the f iledlreoorded dopusenl (Property Owners Mailing Address) Countyf Peer AOeR/verslde ORANGE, CA 92859 Assessor-County Clerk-Recorder SPACE ABOVE THIS LINE FOR RECORDER'S USE RECORDING OF A • WATER QUALITY MANAGEMENT PLAN OPERATION AND MAINTENANCE AGREEMENT FOR TEMECULA MEDICAL OFFICE BUILDING (Name of Project) 31775 DEPORTOLA ROAD (Address or Tract Map/Lot No.) TEMECULA, CALIFORNIA Page 1 - ----- — - — - Water Quality Management Plan • Operation and Maintenance Agreement Property Owner Name: TEMECULA M.O.B., LLC Property Owner Mailing Address: P.O. BOX 2248 ORANGE, CA 92859 Project Address or Location: 31775 DEPORTOLA ROAD TEMECULA, CA Project's Assessor Parcel Number: 959-080-035 This Operation and Maintenance Agreement (Agreement) is' made in The City of Temecula (City), a municipal agency, located in the County of Riverside; State of California,'by (insert property owner) TEMECULA.M.O.B., LLC (Owner),this (insert day) 16th of(insert month and year), December 2075 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 Property be developed in accordance with • governmental approvals issued by the City and other agencies having jurisdiction over the Property; WHEREAS, at the time of initial approval of the.development project (Project) known as (insert name of project) TEMECULA MEDICAL OFFICE BUILDING within the Property, the City required the Project to generate a Water Quality Management Plan(WOMP). The WQMP describes how the Project proposes to remove pollutants and minimize any adverse.impacts from the discharge of storm water and non-stone 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 laws 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 shall 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 sampling 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 place 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 all or part of the Property. • -- - ----— -- — - - Page 3 . . - -----..—_.., . ......_ __ _ IN WITNESS THEREOF,the Owner hereto affixes their signature as of the date first written above. fEMECGlG�} M. OWNER f: OWNER 2 (if more than one owner!: Warren L. Owens //lame ame Signature Sign tur Managing Member Title Title A notary acknowledgement is required for recordation (attach appropriate acknowledgement). • _.. _._. Page CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT CIVIL CODE§ 1189 A notary public or other officer completing this certificate verifies only the Identity of the Individual who signed the document to which this certificate is attached,and not the truthfulness,accuracy,or validity of that document. State of Califomia ) County of .a AA0 e ) On /Z�/6�20►� before me,.�&a k ik,/ Aig S .Aloll?1,41 � IC_ Date � � Here Insert Name a d Title of thV Officer personally appeared Gf/�1f�/I Pi �• e2be ft/1 Names of Si nerls) who proved to me on the basis of satisfactory evidence to be the person(4 whose name is/afe subscribed to the within instrument and acknowledged to me that he/sheAboy executed the same in his/herdtAeir authorized capacity(tas),and that by his/herftheir signatures)on the instrument the personA, or the entity upon behalf of which the person(s)acted, executed the instrument. I certify under PENALTY OF PERJURY under the laws of the State of California that the foregoing paragraph MARK W.MUC ASTERS Is true and correct. • 5NpCOMMISSION 0 ALIF ;?M WITNESS m hand and offs ial.seal. COMMISSION. AUFO T y Y OnANGa COUNTY' yy Camm.EiP.APrO t1,"It ./ Signature 6 /v Signature oPlVofary Public Place Notary Seal Above OPTIONAL Though this section is optional, completing this information can deter alteration of the document or fraudulent reattachment of this form to an unintended document. Description of Attached Document Title or Type of Document: Document Date: Number of Pages: Signer(s) Other Than Named Above: Capacity(ies) Claimed by Signer(s) Signer's Name: Signer's Name: ❑Corporate Officer — Title(s): ❑Corporate Officer — Trtle(s): ❑Partner — ❑Limited. ❑General ❑Partner — ❑Limited ❑General ❑Individual ❑Attorney in Fact ❑Individual ❑Attorney in Fact ❑Trustee ❑Guardian or Conservator ❑Trustee ❑Guardian or Conservator ❑Other. ❑ Other. Signer Is Representing: Signer Is Representing: • 02014 National Notary Association•www.Nationa]Notary.org• 1-800-US NOTARY(1-800-876-6827) Item N5907 EXHIBIT A (Legal Description of Property) A PORTION OF LOT 27 OF TRACT•NO. 3762, IN THE CITY OF TEMECULA, COUNTY OF RIVERSIDE, STATE OF CALIFORNIA, AS SHOWN BY MAP ON FILE IN BOOK 59 PAGES 53 THROUGH 55 INCLUSIVE OF MAPS, IN THE OFFICE OF THE COUNTY RECORDER OF SAID COUNTY. CALIFORNIA. • • --- -- — -- Page 5 ��,►..►�.1;,��wm OVERI g�\'� SRI1' is `�► I�I�. LIM `M Ml pa -` ��N �mmm0 Omr ZT_q ff r r 3 1m om��m a�mmm PROPERTY LINE 93.47 62.97 13, WATER SURF CURB OPFNMGS PER PLAN 4.1 SLOPE '.� ""•..,. • .•. MODIFIED CURB (TYP) +- •` DROP +•: ,21tFlL117t`- .r A GUTTER VISQUEEN MOISTURE ` INLET LATE;t •i..:;: 3' GRAVEL PAD AT BARRIER MDT. 10 MIL CURB OPENINGS THICK PER LAYER-2 LAYERS THICK (TYP. 9' THICK 1HICK PEA BOTH SIDES) BO.00 (RAVEL LAYER GRAVEL LATER 12' PVC NOTES STORM DRAIN 1. FOR FILTER LATER INSTALL ENGINEERED SOIL MEDIA TO CONSIST OF SM MINERAL COMPONENT AND 15X ORGANIC COMPONENT BY VOLUME. DRUM MIXED PRIOR TO PLACEMENT. MINERAL COMPONENT SHALL i)E A CLASS A SANDY LOAM TOPSOIL MEETING THE FOLL.OWDIG: EERMT GE COMPONENT 70—BD 15 — 20 SLLT S — 10 CLAY TRIP TICKET OR CERTIFICATE OF COMPLIANCE, SHALL BE MADE AVAILABLE TO THE • DIPSECTOR SRO PROVE THE ENGINEERED MIX MEETS THIS SPECACATION 2. GRAVEL LAYER TO CONSIST OF 1' ROC( PER AASHTO 157 OR EOLnVALENT. RIORETENTION BASIN NO SCALE 4' THICK LAYER OF RIVER ROC( COBBLES B' PERFORATED PVC PIPE (PEIMATIM UPWARD 29' THICK IYJT OF I' GRAVEL VISOIUEEN MOISTURE BARRIER EON. 10 MIL THICK PER DYER—P • LAYERS THICK (TYP. BOTH SIDES) INFILTRATION TRENCH NO SCALE • Exhibit"C" Operation and Maintenance Manual • 1. PURPOSE OF THE BIORETENTION BASIN AND INFILTRATION TRENCH MAINTENANCE MANUAL The purpose of this manual is to provide maintenance instructions for the one bioretention basin located in the south portion of the site, and the two infiltration trenches located along the western and eastern sides of the site, in the landscape areas. The bioretention basin and infiltration trenches are pollution control devices designed to treat urban runoff before it leaves the project area. Regular maintenance will help to ensure that the bioretention basin and infiltration trenches function as they have been designed. This manual will serve as a reference guide and filed manual to assist the property owner with: •An overview of the bioretention basin and infiltration trenches and how they function • A description of the locations of the bioretention basin and infiltration trenches • An understanding of the procedures required to effectively maintain the bioretention basin and infiltration trenches on a regular basis • Reproducible copies of the forms, logs and guidance sheets necessary for recording maintenance activities associated with the bioretention basin and infiltration trenches. 2. GENERAL DESCRIPTION AND FUNCTION OF THE BIORETENTION BASIN AND INFILTRATION'TRENCHES A. BIORETENTION BASIN The bioretention.basin is a shallow, vegetated.basin underlain by an engineered soil media. Healthy plant and biological activity in the root zone maintain and renew the macro-pore space in the soil and maximize plant uptake of pollutants and runoff. keeping the soil media layer of the basin from becoming clogged and allowing more of the soil column to function as both a sponge (retaining water) and a highly effective and self-maintaining biofilter. The bottom of the basin is unlined, which also provides an opportunity for infiltration to the extent the underlying onsite soil can accommodate. When the infiltration rate of the underlying soil is exceeded, fully biotreated flows are discharged via underdrains. The basin will inherently achieve the maximum feasible level of infiltration and evapotranspiration and achieve the minimum feasible (but highly biotreated)discharge to the storm drain system. The cross section of the bioretention basin consists of: 21-inch thick layer of engineered soil media layer over 3-inch thick layer of pea gravel over 9-inch thick layer of 1"diameter gravel. Runoff enters the basin area by 1-foot wide openings in the adjacent curb. Storm flows that enter the basin will discharge by means of a grated catch basin that connects a 12"diameter PVC pipe to the public storm drain system. Each side of the basin is lined with a double layer of visqueen moisture barrier. A 6" diameter perforated pipe is located within the 9-inch thick gravel layer, connecting to the grated catch basin Soils tests indicate the infiltration rates of the soil will drain the water quality capture reservoir volume within 48 hours. B. INFILTRATION TRENCHES The infiltration trenches are long, narrow basins comprised of layers of porous materials that allow collective urban runoff to infiltrate into the ground. From the top of the trench to the bottom, the porous materials consist of: • 4-inch thick layer of River Rock Cobbles over Exhibit"C" Operation and Maintenance Manual • 29-inch thick layer of 1"diameter gravel. Runoff enters the infiltration trenches by 1-foot wide openings in the adjacent curb or by surface flow directed into the trench areas. Each side of the trench is lined with a double layer of visqueen moisture barrier. A 6" diameter perforated pipe is located within the top portion of the 29-inch thick gravel layer, connecting to the grated catch basin located in the bioretention.basin preventing standing water from occurring in the trench,which in turn could create vector concerns. Pollution is mitigated through infiltration of runoff Into the porous materials within the trenches and ultimately through infiltration in to the ground below the trench. Soils tests indicate the infiltration rates of the soil will drain the water quality capture reservoir volume within 48 hours. 3. MAINTENANCE RESPONSIBILITY The property owner, Temecula M.O.B., LLC is ultimately responsible for maintaining the bioretention basin and infiltration trenches. The goal in maintaining the basin and trenches is to ensure that infiltration is occurring. Regular inspection and replacement of materials within the basin and trenches once they become ineffective in performing as designed 'are ,the major components in the maintenance program, In order to 'achieve this, the following., general procedures shall be followed: "Qualified maintenance personnel should periodically inspect the permeable paving at least twice a year. The first inspection should happen prior to August 1 and the subsequent inspection should happen during the period between February 1 and March 31. • " If a problem is identified, it should be rectified as soon as possible to ensure that the paving functions as designed. " Regular removal of trash and debris should occur as needed. Trash and debris, visible along the surface of the permeable paving shall be promptly removed. 4. MAINTENANCE INDICATORS AND ACTIVITIES Functional Maintenance: Regular functional maintenance is required to ensure that the bioretention basin and infiltration trenches perform in an effective manner. Functional maintenance consists of both preventative and corrective activities. Logs and guidance sheets are contained herein to use in recording vital information while performing operation inspection and other BMP maintenance activities. Maintenance records shall be maintained by the property owner for a minimum of five years. The proper use and subsequent storage of these records will assure the City of Temecula that the bioretention basin and infiltration trenches are functioning as designed. Preventative Maintenance: Preventative maintenance shall be performed on a regular basis. Checklists are included herein to track and record preventative maintenance activities. These activities include trash and debris removal and sediment management. Trash and debris removal shall be performed to ensure that runoff has adequate surface area to infiltrate through the various layers that comprise the cross section of the bioretention basin and infiltration trenches. Sediment management will occur when testing indicates that the infiltration rate has diminished below the stated acceptable rate. • Corrective Maintenance: Exhibit"C" Operation and Maintenance Manual • Corrective maintenance will be required on an emergency or non-routine basis to correct problems and restore the intended operation and safe function of the bioretention basin and infiltration trenches. Bioretention Basin and Infiltration Trench Maintenance • Inspect a minimum of twice a year, before and after the rainy season, after large storms or more frequently as needed. • Clean the basin and trenches when the loss of infiltrative capacity is observed. When the standing water is present for a period of time in excess of 72 hours, removal of sediment may be necessary. This is an expensive activity and the need for it may be minimized through the prevention of upstream erosion. • Remove litter and debris from surface as required. • Control mosquitoes as necessary. Table 1, Typical Maintenance Activities for Bioretention Basin and Infiltration Trenches Design Criteria and Maintenance Indicator Inspection Maintenance Activity Routine Actions Fre uene Inspection for standing Presence of water that Annually and Check the 12' PVC drain. water in the bioretention has been standing for 72 72 hours after a pipe for blockages and basin and infiltration hours storm event. unclog. trenches Inspect for sediment Sediment buildup within IN-Annually Remove and replace top buildup within the 6' 2'of the bottom of the layer of basin and/or trench .• underdrain basin and/or trench. materials (engineered media la er or cobbles Maintenance Indicators: Maintenance Indicators are signs or triggers that indicate that maintenance personnel need to check the infiltration trenches for maintenance needs. The most common triggers include warnings or accounts of standing water and sediment accumulation. The proceeding Table 1 shows conditions and criteria that trigger the need for some specific routine infiltration trench maintenance activities. Emergencies may occasionally arise that would require a more urgent, critical response. Sediment Removal: The types of storm water pollutants that accumulate in sediment varies, but may include contaminants such as heavy metals; petroleum hydrocarbons, and other organic compounds such as pesticides or solvents. When the sediment reaches a level within 2" of the invert of the 6" PVC underdrain, the sediment must be removed. Sediment Disposal: Several methods for disposal are available depending on the concentration of toxins in the waste. Methods can range from recycling the material, to depositing the sediment into appropriate landfills. At the time of disposal, if the waste— are deemed to be unfit for disposal in a municipal landfill, a full and comprehensive testing program should be run by a qualified person to test for all the constituents outlined under California code of Regulations (CCR) Title 22. Title 22 list concentrations of certain chemicals and their soluble threshold limit concentrations (STLC's) and • their total threshold limit concentrations (TTLC's). Chemicals that exceed the allowable concentrations are considered hazardous wastes and must be removed from the sediment. Exhibit"C" Operation and Maintenance Manual • S. INSPECTION AND MAINTENANCE CHECKLIST • • BIORETENTION BASIN AND INFILTRATION TRENCH.INSPECTION AND MAINTENANCE CHECKLIST DATE OF INSPECTION: TYPE OF INSPECTIONS: _MONTHLY _PRE-WET SEASON AFTER HEAVY RUNOFF(V OR GREATER) END OF WET SEASON OTHER Conditions When Maintenance Comments(Describe maintenance REMaintenance Expected Defect Maintenance Is Required Needed completed and if needed maintenance was wh is eslno not conducted note when It will be done rmed When water stands in the Tuld be no Standing Water basin or trench longer than staner inexcess 72 hours hours Trash and Debris Visible confirmation of Trash and debris Accumulation accumulated trash and removed from basin or debris trench and disposed of properly Evidence of sedimentation in Materials removed and Sediment of disposed basin or trench dis P properly so there is no standing Visual inspection reveals water Bedding Layers/ Uniform graded has been du Side Slopes material is not uniform up or surfaces, no erosion Any condition not covered apparent Miscellaneous above that needs attention Meet the design to ensure proper function of specifications the basin or trench • Temecula M.O.B.Water Quality Management Plan Responsible Responsible Structural Annual Funding Treatment Quantity Capital O&M Start-up O&M Funding party for BMPs Costs Costs Dates Frequency Party for Long-term Installation O&M BMP1 - 4,035 Prior to Basin Bioion cubic $20,175.00 $1,500.00 Occupancy Monthly Developer Developer Basin feet BMP2- 1.401 Prior to Infiftratiori cubic $8.406.00 $1,000.00 Occupancy Monthly Developer Developer Trench feet BMP3- 930 Prior to Infiltration cubic $5,580.00 $1.000.00 Occupancy Monthly Developer Developer Trench feet • • Water Quality Management Plan(WQMP) Temecula Medical Office Building Appendix 10: Educational Materials BMP Fact Sheets,Maintenance Guidelines and Other End-User BMP Information -43- Vnur auto • Web Site Addresses_: • Take used motor oil, antifreeze, and other toxic , solvents to collection centers. U.S.Environmental Protection Agency RMWATER Fix oil, radiator, and transmission leaks.., don't �A V% '__ -i M Icave oil slicks to wash off in the rain. CLEANWATER Use biodegradable soap when washing cars. Limit U.S.Fish&Wildlife Service water to reduce runoff. Protectionm Cut down on automobile trips. Pollutants from engine exhausts contain toxic chemicals that may California Department of Fish &Game eventually end up in stormwater. The California Environmental Rsources Evaluation With your cooperation . . System(CERES) lie can protect our groundwater, Riverside County Transportation Department rivers and lakes.. and enjoy pure, w'.cu.river�ide ca us-trans lram.him 6 clean water. Together we can make a difference! Phone Numbers/Addresses: kid Q �- Environmental Health 0 d l For 358-4529 more information on the Stormwater,77eanivater Mailing Address: Protection Program: 4065 Countv Circle Dr. call: Riverside, CA 92503 County of Riverside ©he Storurtrater/Cleanivater Transportation Department Street Address: (909) 955-6880 Same as above protection Prr,.,ram will help Transportaticontrol a serious problem.. . (909)955-6onDepartment pollilled ctnI-Illwrter, (909)955-6880 For information on disposal of Household Hazardous Waste 'Mailing Address: Our area doesn't receive a great deal of call: P.O.Box 1090 rain, but even a single storm can carry County of Riverside Riverside, CA 92502 Department of Environmental Health oil, grease and other pollutants into our (909)358.5172 street Address: stormwater. These untreated waters flow 4080 Lemon Street, 8'"Floor directly to our rivers, lakes and Stormwater should be Riverside,CA 92501 groundwater. These waters not only Cleanwater only... support wildlife... they also serve as our Help keep our water cleatIf resources for swimming, fishing, boating and our dr•inkin- grater. FACTS, Are any 'properties�8xempted from this ��rsir®AT�t• A 1 . assessment. ACTIONS, l�l tom• Because federal law exempts agricultural What you should know properties from this program, assessments are not What you can do levied. Undeveloped/vacant Natural and man-made drainage systems capture parcels are also excluded from Everyone contributes a little to the problem. . but, by rainwater runoff. this assessment. working together, we can make a big, difference. The problem is. . . they capture • How will the Pollutants as well. money be Your Home used? • Use and dispose of household products carefully, • How is stormwater polluted? Funds will be Cleaning solutions and solvents often contain When pollutants such as motor oil, used to toxic elements. antifreeze, detergents, soil erosion, trash and litter end up in a comply with stem, the federal guidelines. storm drain system, y The guidelines require: When using pollute drinking water. waterbased Even rainwater flowing stormwater sampling,. inspection of illegal g drainage, hazardous material management, paints, clean off rooftops and brushes in a sink. increased street sweeping and community property carries information/participation. A portion of the Don't pour pollution downstream, 'funds will also be -used to protect against clean-up water into our water resources. stormwater pollution caused by construction down the and operation of public projects, which storm include roads, facilities and bridges in your drain: • Why has this program started now? Federal area. Dispose of oil-based products and solvents at a laws now require counties and cities to clean up hazardous waste collection site. stormwater runoff, so that stormwater is cleanwater only. • How can assessment fees be kept to a minimum.' Recycle reusable materials. By doing your part to help keep stormwater • Who pays for this program? clean,you can minimize program'costs. Y and The federal government requires, but does not Our Y fund this program. As a result, many cities and • Apply pesticides and fertilizers carefully. counties typically enact parcel assessments based • Use a broom— not a hose—to clean the sidewalk. on the size and type of property. Municipalities 0 Do not over water your lawn and garden. Keep calculate appropriate fees for their area. water on your property. • Clean up animal waste and dispose of it in trash • When .are assessment fees collected? cans. Assessments appear on annual property tax bills which are mailed in September. In some areas, property tax bills also reflect a separate stormwater runoff fee from the Riverside County Flood Control District. This is because local agencies (including Riverside County, cities, and the Flood Control District) must each take steps to protect stormwater Flowing through their own storm drain systems. erinformaUon: DID You KNOW!!ffiam&ffAff Pollution . . . What you should know Fc:r in,,, ,ro-n,e:non on u,e General Industrial - Riverside County has two drainage systems - sanitary sewers and storm drains. Storm Water Permit contact: YOUR FACILITY MA The storm drain system is designed to help prevent flooding by carrying excess State Water Resources Control Board(SWRCB) rainwater away from streets. Since the storm drain system does not provide for (916)657-1146 or www.swrcb.ca.gov/a,at your NEED A STORM WA- water treatment, it also serves the Regional Water Quality control Board(RWOCB). PERMIT? unintended function of transporting Settle Ana Region(8) pollutants directly to our waterways. California Tower 3737 Main Street,Ste.500 Unlike sanitary sewers, storm Riverside,CA 92501-3339 (909)782-4130 drains are not connected to a treatment plant- they flow directly San Diego Region(9)9771 to our local streams, rivers and San Diego, y ego,C Mesa Blvd..Ste.A Ant O CA9212q lakes. Lml�ili� (619)467-2962 Colorado River Basin Region(7) In recent years, awareness of the need 73-720 Fred Waring Dr..Ste. 100 to protect water quality has increased. r Palm Desert,CA 92260 As a result, federal, state, and local (760)346-7491 programs have been established to reduce polluted stormwater discharges to SPILL RESPONSE AGENCY: our waterways. The emphasis Of these HA2-MAT: (909)358-5055 programs is to prevent stormwater HAZARDOUS WASTE DISPOSAL: (909)358.5055 pollution since it's much easier, and less RECYCLING INFORMATION: 1-800-366-SAVE costly, than cleaning up "after the fact." _ TO REPORT ILLEGAL DUMPING OR A CLOGGED STORM DRAIN: 1-800-506-2566 To order additional brochures nr to obtain information °°°merg°Ratty°prevention a Many industrial facili tional Pollutant Discharge Elimination System (NPDES) and manufacturing oper must obtain coverage Lander It --� StormWater Industrial Activities Storm Wat In 1987, the Federal Clean Water Act was amended to establish a framework for General Permit regulating industrial stormwater discharges under the NPDES permit program. In California, NPDES permits are issued by the State Water Resources Control Board PROTECTION PROGRAM (SWRCB)and the nine (9) Regional Water Quality Control Boards (RWQCB). In FIND ® general, certain industrial facilities and manufacturing operations must obtain Ri:mrside County gratefully acknowledges the State IF ypUR FACT..:, coverage under the Industilal Activities Storm Water General Permit if the type of Wnter Quality central Board and the American Public MUST OBTAIN A Ps_ facilities or operations falls into one of the several categories described in this Works Association,Storm Water Quality Task Force for the information provided in this brochure. - - brochure. d What are the requirements of the How Do I Know If I Need A Permit? Industrial Activities Storm Water General Permit? Following are general descriptions of the 4 Land'ills,land application saes and open, The basic requirements of the Permit are: industry categories types that are regulated by the dumps that receive or have received any industrial Industrial Activities Storm Water General Permit. waste; unless there is a new overlying land use 1. The facility must eliminate any non-stormwater discharges or obtain a separate permit for such Contact your local Region Water Quality Control such as a golf course,park,etc.,and there is no discharges. Board to determine if your facility/operation discharge associated with the landfill; requires coverage under the Permit. 2. The facility must develop and implement a Storm Water Pollution Prevenuon Plan (SWPPP). The -► Facilities such as cement manufacturing: "4 Facilities involved in the recycling of SWPPP must identify sources of pollutants that may be exposed to stormwater. Once the sources of feedlots, fertilizer manufacturing, petroleum materials, including metal scrap yards, battery pollutants have been identified,the facility operator must develop and implement Best Management refining:phosphate manufacturing;steam electric reclaimers, salvage yards, ane automobile Practices(BMPs)tu minimize or prevent polluted runoff. power generation; coal mining; mineral mining junkyards; and processing; ore mining and dressing; and Guidance in preparing a SWPPP is available from a documant prepared by the California Storm Water asphalt emulsion: 4 Steam electric powergenerating facilities. Quality Task Force calledthe Cablomia Storm Water Best Management Practice Handbrrok. facilities that generate steam for electric power by -► Facilities classified as lumber and wood combustion; 3. The Facility must develop and implement a Monitoring Program That includes conducting visual products (except wood kitchen cabinets): pulp, observations and collecting samples of the facility's storm water discharges associated with industrial paper,and paperboard mills:chemical producers 4 Transportation facilities that have vehicle activity. The General Permit requires that the analysis be conducted bya laboratory that is certified by the (except some pharmaceutical and biological maintenance shops, fueling facilities, equipment State of California. products); petroleum and coal products; leather cleaning operations,orairport deicing operations - production and products: stone. clay and glass This includes school bus maintenance facilities 4. The facility must submit to the Regional Board,every July 1,an annual report that inclw les the results of products; primary metal industries; fabricated operated by a school district; its monitoring program structural metal; ship and boat building and repairing: -6 Sewage treatment facilities: -0 Active u, inactive mining operations and oil and gas exploration,production,processing.or -► Facilities that have areas where material A Non-Storm Water Discharge is...any A BMP Is . . . a rechnique, process, activity. treatment operations; handling equipment or activities, raw materials, discharge to a storm drain system that is not or structure used to reduce,the pollutant content of Intermediate products, final products, waste composed entirely ofstonm wale,. Thelollowing a storm water discharge. BMPs may include Hazardous waste treatment, storage, or materials. by-products, or industrial machinery non-storm water discharges are authorized by the simple, non-.structural methods such as good disposal facilities; are exposed in storm water. General Permit: fire hydrant flushing; potable housekeeping, staff training and preventive water sources, including potable water related to mainlenarce. Additionally. BMPs may include the operation, maintenance,or testing of potable structural modifications such as the installation of water systems; drinking fountain water. berms.canopies or urahnent oontrol(e.g.setting How rill I obtain coverage under the atmospheric condensates including refrigeration, basins.oillwalerseperators.etc./ g air conditioning, and compressor condensate: - Industrial Activities Storm Water General Permit? irrigation drainage;landscape watering.springs, non-contaminated ground water; foundation or - -... Obtain a permit application package from your[oral Regional Water Quality Control Board listed on the back rooting drainage;and sea water infiltration where - of this brochure or the Stale Water Resources Control Board(SWRCB). Submit a completed Notice of Intent file sea waters are discharged back into the sea (NOp form,site map and the appropriate fee($250 cr$500)to the SW RCB Facilities must submit an Not watersource thirty(30)days prior to beginning operation Once you submit the NOI,the Slate Board will said you a letter. acknowledging receipt of your NOI and will assign yocr facility a waste discharge identification number(WDID No). You will also receive an annual lee billing.These billings should roughly coincide with the date the Slate WARNING: There are significant penalties for noncomplfani a minimum fine of$5.000 for failing to obtain permit Board processed your original NO1 submittal coverage,and,up to$10,OOOperday permeation plus$10pergallon ofdischarge in excessof 1,OOOgallons. er t e 'form For more information contact: I ONLY RAIN IN THE STORM DRAIN Riverside County Flood Control District 1995 Market Street, Riverside, CA 92501 Call Toll Free: 1-800-506-2555 E-mail: flood.fcnpdes@co.riverside.ca.us or visit 000 www.epa.gov/npdes/stormwater www.epa.gov/nps i F2�CNaY FxF flyLY tips Polluted stormwater runoff can have many adverse effects on plants, fish, Stormwater runoff occurs when precipitation animals, and people. from rain or snowmelt flows over the ground. • Sediment can cloud the water impervious surfaces like driveways, sidewalks, and make it difficult or and streets prevent stormwater from impossible for aquatic plants to naturally soaking into the ground. grow. Sediment also can destroy aquatic habitats. • Excess nutrients can cause 2^ algae blooms.When algae die, Err, r� sr:<= they sink to the bottom and decompose in a process that removes oxygen from Now 777. ;4 ': _ the water. Fish and other aquatic organisms can't exist in water with low dissolved oxygen levels. _ak • Bacteria and other pathogens can wash into swimming areas and create health hazards, often making beach closures .4 0• r'" g� necessary. • Debris—plastic bags, six-pack rings, bottles, and cigarette butts—washed into waterbodies can choke, suffocate, or disable aquatic life like ducks, fish, turtles, and birds. • Household hazardous wastes like insecticides, pesticides, paint, f !!� solvents, used motor oil, and other auto fluids can poison aquatic life. Land animals and people can become sick or die from eating diseased fish and shellfish or ingesting polluted water. Stormwater can pick up debris, chemicals, dirt, and other • Polluted s often pollutants and Flow into a storm sewer system or directly to affects drinking nking water sources.This, in turn, can a lake, stream, river, wetland, or coastal water. Anything that 4 _ affect human health and ..r>Nr' s...rr: enters a storm sewer system is discharged untreated into � fi�'�= �^ increase drinking water the waterbodies we use for swimming, fishing, and providing treatment costs. drinking water. i ' r ? r - , , �` � y , ( e r c Auto care ~•� ' Washing your car and degreasing auto parts at home Edurnliat s raertt�20° "vfar4 peo�t'ei tie/vvlot. can send detergents and other H Said aNd nt2&M KRat A&W desi re watw VAQk4 contaminants through the '06t oair4 exiee . it domfil ex&be ravried //�� ii - / storm sewer systerr. Dumping - p B Rt { Ffr' ClE�- DR, C Odf, of �iG(!d-� p, kD�[(C�d WCW. automotive fluids into storm uJa ated ixa a (nO1G "Jerhoo y ptop 4 6* e4a p drains has the same result as POK& t Cke aieaA dark al tmerrLaA Pfd1utA dumping the materials directly into a waterbody. dO a wotot °d a auk ' • Use a commercia'.car wash that treats or �4 t�LL�L CQNLIdCQ�1W� Dow tPatrt 46st oo(&W,gwrutd of ut&&&w dwiad. recycles its wastewater, or wash your car on Permeable Pavement--Traditional concrete and your yard so the water infiltrates into the asphalt don't allow water to soak into the ground. ground. Instead these surfaces rely on storm drains to Lawn care • Repair leaks and dispose of used auto fluids divert unwanted water.Permeable pavement and batteries at designated drop-off or systems allow rain and snowmelt to soak through, Excess fertilizers recycling locations. decreasing stormwater runoff. red and pesticides y g applied to lawns Rain Barrels—You can - and gardens wash collect from off and pollute �- Septic Pet waste rooftops in mosquito- streams.streams. In addition, yard systems _� pet waste can be Proof containers.The clippings and a major source of __ water can e used later on PP � Leaking and � I lawn or garden areas. leaves can wash poorly bacteria and into storm drains and contribute maintained w . - excess nutrients 7 Rain Gardens and nutrients and organic matter to streams. septic in local waters. Grassy Swales—Specially • Don't overwater your lawn. Consider systems release nutrients and •When walking designed areas planted using soaker hose instead of a pathogens(bacteria and your pet, with native plants can provide natural places for sprinkler. viruses) that can be picked up remember to pickup the ,-70 rainwater to collect by stormwater and discharged waste and dispose of it and soak Into the • Use pesticides and fertilizers into nearby waterbodies. properly. Flushing pet a •"' ground.Rain from sparingly.When use is necessary, use Pathogens can cause public waste is the best disposal rooftop areas or paved these chemicals in the recommended health problems and method. Leaving pet waste areas can be divertedamounts. Use organic mulch or safer environmental concerns. on the ground increases into these areas rather pest control methods whenever ♦ Inspect your system every public health risks by Othan into storm drains. possible. 3 years and pump your allowing harmful bacteria • Compost or mulch yard waste. Don't tank as necessary(every 3 and nutrients to wash into Vegetated Filter Strips—Filter strips are areas of leave it in the street or sweep it into to 5 years). the storm drain and native grass or plants created along roadways or storm drains or streams. eventually into local streams.They trap the pollutants stormwater • Don't dispose of waterbodies, picks up as it flows across driveways and streets. • Cover piles of dirt or mulch being household hazardous used in landscaping projects. waste in sinks or toilets. 1 Dirt, oil, and debris that collect in on controls that aren't maintained can cause , parking lots and paved areas can be a ssive amounts of sediment and debris to be f washed into the storm sewer system c rried into the stormwater system. Construction and eventuallyenter local v i les can a fuel, it and other harmful fluids I �h c n leak u ,oil, rm ul waterbodies. that can be picked up by stormwater and t- ._ ^ 7rf- • Sweep up litter and debris from deposited into local waterbodies. �. sidewalks, driveways and parking lots, • Divert stormwater away from disturbed or / especially around storm drains. (,exposed areas of the construction site. 9 • Cover grease storage and dumpsters •Install silt fences, vehicle mud removal areas, and keep them clean to avoid leaks. ivegetative cover, and other sediment and • Report any chemical spill to the local ierosion controls and properly maintain them, especially after rainstorms. hazardous waste cleanup team. They'll know the best way to keep •Prevent soil erosion by minimizing disturbed spills from harming the environment. areas during construction projects, and seed and mulch bare areas as soon as possible. Lack of vegetation on streambanks can lead to erosion. Overgrazed pastures can also contribute excessive amounts of sediment to local waterbodies. Excess fertilizers and pesticides can poison aquatic animals and lead to destructive algae blooms. livestock in streams can contaminate waterways with bacteria, making them unsafe for human contact. • Keep livestock away from streambanks and provide them a water source away from waterbodies. • store and apply manure away from waterbodies and in accordance with a nutrient management plan. • Vegetate riparian areas along waterways. • Rotate animal grazing to prevent soil erosion in fields. • Apply fertilizers and pesticides according to label w �~ instructions to save mone40h�-; y and minimize pollution. .. Uncovered fueling stations allow spills to be �! �' washed into storm drains. Cars waiting to be repaired can leak fuel, oil, and other harmful Improperly managed logging operations can result in erosion and fluids that can be picked up by stormwater. sedimentation. �- • Clean up spills immediately and properly • Conduct preharvest planning to present erosion and lower costs. dispose of cleanup materials. ~AR • Use logging methods and equipment that minimize soil disturbance. • Provide cover over fueling stations and • Plan and design skid trails, yard areas, and truck access roads to design or retrofit facilities for spillcontainment. minimize stream crossings and avoid disturbing the forest Floor. • Construct stream crossings so that they minimize erosion and physical # Properly maintain fleet vehicles to prevent oil, gas, and other discharges from being changes to streams. washed into local waterbodies. ` • Expedite revegetation of cleared areas. • Install and maintain oil/water separators. Where does stormwater ti pollution come from? Help Keep Our Water Clean! To receive your free guide on 20 ways you % can help protect our _ - water.. t A H y . For information on the disposal of household ` Did you know that the sewer hazardous waste... system and the storm drain system are not the same? - To receive a list of recyclers in your area... _ CALL ` Is stormwater pollution a �vQOO��OCMj��CC JJ problem only when it rains? t - Sto�rmMater A __, 416h. 9formwafer Polluf*ion Rain is typically a welcomed sight in Riverside County It cleans the air and provides us with a valuable resource - water. Sure, rainwater is usually clean. But, as it flows over our streets and yards, it carries pollutants into the storm drains. So, what's the problem ;' Be a part of the solution! The problem is . . . storm drains ultimately carry these pollutants Everyone contributes a little to the directly to our rivers, lakes and streams.. problem . . . now, it's time for all of us to: Stormwater pollution causes as much as 60% of our it Never pour anything down a storm drain; water pollution problem. It jeopardizes the quality of our waterways and poses a threat to groundwater resources & Use good housekeeping practices with lawn if pollutants percolate through Soil - care chemicals, oil, gasoline, pet wastes, paints and solvents: Some major pollutants include Recycle and safely dispose of used oil and household hazardous wastes; • Dirt and grime from streets, Purchase non-toxic products; • Motor oil, antifreeze. paints, and household / cleaners that are dumped into the storm drains ' Report illegal dumping to local authorities; • Contaminants from car and truck exhaust. • Pesticides and fertilizers from lawns and gardens; f Tell others about stormwater pollution and • Soil erosion from yards and hillsides encourage them to help: • Biological contaminants from animal waste, ' Call the StormWaterlCleanWater Protection • Litter, leaves and lawn clippings:Contaminates from illegal dumping I Program for a booklet on environmentally • r_ -` safe alternatives for the home and garden. SlormW� " Mat You Should Know For information on the Construction Activity General Riverside County has two drainage systems-sanitary sewers and storm drains. The storm drain Permit package contact: system is designed to help prevent flooding by carrying excess rainwater away from streets.Since State General Permit Intormation What VDU S the storm drain system does not provide for water treatment,it also serves the unintended function (916)Quality on or your -'_ of transporting pollutants directly to our waterways. / r� Regional Water quality Control Board(RWDCB) C UnWesanitarysewers,storm drains Santa Ana Region(8) GENERA a California Tower le riot corrrrectedtoatreatment 3737 Main Street,State S00 CONSTRUCTION 8 Want - they flow directly to our Riversido.CA 92501-3339 SITE SUPERVISION looalsheams,rivers and lakes. (909)782-4130 r San Diego Region(9) --. - ." Runoff from construction sites cancarry pollutant 9771 Clarremont Mesa Blvd.,Suite B - material into stone drains. Examples of pollutants San Diego,CA 92124 - . include oil,fuel,and fluid from vehicles and heavy (619)467-2952 equipment;construction site debris and dirt;mortar Colorado River Basin Region(7) - < , and concrete;paints and solvents;and landscaping f _ 73-720 Fred Wanng Drive,Suite 100 ` , runoff containing pesticides orweed killers. 1 Palm Desert,CA 92260 " �y (760)346-7491 ! r • /l I Stomlwater pollution causes as much as 60% of our SPILL RESPONSE AGENCY: ® waterpolfution problem. Itjeoparcdzes the quaiity of our HAz-MAT: (909)358-5055 .,,' _f. waterways and poses a threat to groundwater a AFTER 5:00 P.M.: (909)358-5245 OR 911 - Q resources ilpollutants percolate through soil RECYCLING AND HAZARDOUS WASTETi' - '--_ - DISPOSAL: 909 358 5055 ) ( ) puntY of Riverside TO REPORT ILLEGAL DUMPING OR A �� ".� G CLOGGED STORM DRAIN: 1-800-506-2555 i� `-� ter Protection Program To order additional brochures or to obtain information Since preventing pollution is much easier,and less costly,than cleaning up"after the fact,"the Cities on offer pollution prevention eotivaies, and County of Riverside StorrnWater/CleanWater Protection Program informs residents and talc(909)955-1111. Beat described in this pamphlet businesses on pollution prevention activities such as the Best Management Practices (BMPs) The Cities and County of Riverside pros StomnWater/Clean Water Protection Program The Cifies and County of Riverside have adopted ordinances for stormwater management and 1-800-506-2555 for: discharge control. In accordance with state and federal law, these local stormwater ordinances per hlbtt the discharge of wastes into the storm drain system or local surface waters. This includes StolmWater discharges from construction sites containing concrete, paint, fuel, automotive fluids, sediment, pewlOpe trash and other materials. General PLEASE NOTE:Erosion and sedimentation are two of the most common stormwater pollution problems associated with construction activity. Inadequate erosion and sediment controls often PROTECTION PROGRAM Home Bull result in sediment discharges from construction sites.Construction vehicles and equipment can Riverside Count'gratefully acknowledges me Santa Clara also track significant amounts of mud and seciment onto adjacent streets. Control your "site Valley Nonpolnt source reemon Control Program,Alameda ' Construct g f Countywide Clean Water Program and the City of Los perimenter,"the discharge of sediment and pollutants to a street, storm drain or watercourse is Angeles Stormwaler Management Division for information jAnyonel strictiyprohibitedby local ordinances and state and federal regulations. prcvitled in Ines 6mchure. busln Storm Water Construction sites are potential sources of The following Best Management Practices ❑ Place dumpsters under roofs or cover Discharge Permits stormwater pollution. Materials and wastes (BMPs) can significantly reduce pollutant with tarps or plastic sheeting. Nevercleanout . . . what You should know that blow or wash into storm drains,gutters, discharges from your site. Compliance with a dumpsterby washing A down. The State Water Resources Control Board or streets have a direct impact on local rivers stormwater regulations can be as simple as ❑ Make sure portable toilets are in good and Regional Water t and lakes. As an owner, contractor, site minimizing rainwater contact (covering the h Control Boards working order and regularly serviced. Check administer and enforce the State General supervisor, or operator ofasite,you maybe source), limiting the area of the source. frequently for leaks. Permit for construction activity held responsible for any environmental protecting materials and waste from runoff, (Construction Activity General Permit).This damage caused by your subcontractors or and maintaining a"clean"site. ❑ Use gravel approaches to limit the tracking permit requires implementation of best employees. of sediments into streets,where truck traffic is management practices to prevent the ❑ Designate a specific area of the site for frequent. discharge of pollutants from construction auto parking, vehicle refueling, and routine sites. equipment maintenance. This area should be ❑ Prevent erosion by planting fast-growing located away from any streams or storm drain annual and perennial grasses. These will Is compliance with the Construction inlets, and bermed and rocked if necessary. shield and bind the soil. Do not remove trees Activity General Permit required for my Make ma or shrubs unnecessarily; they help prevent major repairs off site. construction site? erosion. •Yes,if construction will affect five or more W ❑exposed materials out of the rain - prevent acres or is part of a plan of development runoff contamination at the source. Cover ❑ Control surface runoff to reduce erosion, d Iles of soil or construction materials especially during excavation. Use drainage of five or more acres. A Notice of Intent p p ditches and dikes to direct water away from (Not)must be filed with the State prior to with plastic sheeting or temporary roofs. active work areas. Consult local drainage grading or disturbing soil at the site. _ Before it rains, sweep to remove materials policies. nee ann ng from paved surfaces that drain to storm drains. What is Required by Iris Permit? Prevent Pollution • Eliminate non-storm water discharges to ❑ Keep work areas clean. Remove trash, the storm drain system and other waters. ❑ Identify potential pollutant sources from litter,and debris on a regularbasis. a Prepare and implement a Storm Water materials and wastes that will be used and ❑ Clean u leaks, drips and others ills o.o.. Pollution Prevention Plan(SWP.PP). stored on the jobsite. p P P • Periodically inspect the site and update I immediately so they do not pollute the soil or the S WPPP as needed. ❑ Incorporate stormwater quality measures leave residue on paved surfaces that can be into the site design process; locate areas for washed away when it rains. Mow Do You Obtain a Permit? material storage and equipment maintenance ❑ Practice source reduction by ordering • Fill out and mail a Notice of Intent(NOI)to away from storm drain inlets orwatercourses. ❑ Maintain all vehicles and equipment in only the amount you need to finish the job. the State Water Resources Control good working order. Inspect frequently for Board Include the required fee.The NOI ❑ Schedule excavation,grading,and paving leaks and repairpromptly. ❑ Dispose of all waste property. Many is your commitment to comply with the activities for dry weather periods. construction materials and wastes, including terms and conditions of the Construction ❑ Never wash down "dirty" pavement or solvents, water-based pain, vehicle fluids, Activity General Permit. ❑ Control the amount of runoff crossing your surfaces where materials have been spilled; broken asphalt and concrete, wood, and construction site. Use berms or drainage use dry cleanup methods whenever possible cleared vegetation can be recycled. Materials NOTE: You may obtain a State General ditches to direct water flow around thestle. (absorbent materials, cat litter and/or rags). that cannot be recycled must be taken to an Permit packet from the State Board or local ❑ Inform your employees and subcontractors appropriate landfill or disposed of as hazardous Regional Board. Carefully read the about stormwater management requirements waste. If did and sediment accumulates on instructions. Make sure you fully 9 9 and their pollution prevention responsibilities. ONw aAiN - W 7NE DRAIN dispose of properly.Do not wash dirt,streets, sweep and collect materials and understand sediment responsibilitie-t permit conditions and your or any materials into the stometrains. lielplul telephone numbers and links: Do you know . . . where the water actually goes? WATER AGENCY LIST slormwitel Pollution Storm Drains are not in Riverside County i City of Banning (951)922-3130 connected to sanitary City of Beaumont (951)769-8520 _ _ City of Blythe (760)922-6161 What you should know for... _ - �N -- sewer systems and City of Coachella (760)398-3502 Coachella Valley Water District (760)398-2651 treatment plants! Des Desert (760)227-3259 03 OUTDOOR CLEANING Desert Center.CSA#51 p60)227-3203 Eastern Municipal Water District (951)928-3777 The primary purpose of storm drains is to carry rain water away from developed areas to prevent Elsinore Valley MWD (951)674-3146 ACTIVITIES AND flooding. Pollutants discharged to storm drains are conveyed directly into rivers,lakes and streams. Farm Mutual Water Company (961 2"4198 Soaps, degreasers, automotive fluids, litter and a host of other materials washed off buildings, City of Hemel (951)765-3712 sidewalks,plazas,parking areas,vehicles and equipment must be property managed to prevent the Idyllwiid water District (951)659-2143 NON-POINT SOURCE pollution of rivers,lakes and streams. Jumps Community Services District (951)360-8795 Lake Hemel MWD (951)658-3241 DISCHARGES costly than leaning up"after the fact." Preventing pollution is the best way to protect the environment. In addition,it is much easier and less Lee Lake Water District (951)277.1414 ;. March Air Farce Base (951)656-7000 Mission Springs Water District (760)329-6448 City of palm Springs (951)323-8253 .4 The Cities and County of Riverside Rancho Caballero (951)760-9272 p Rancho California Water District (760)296-6900 / Regional Water Quality Control Board Ripley CSA#62 (760)922-0951 _jJ - .�-_ . -_ City of Riverside (951)3,91-6170 Rubidoux Community Services District (951)68,14580 1 x A WATERSHED is an area of land that catches rain and snow, then drains or seeps into a marsh, Silent Valley Club,Inc (951)849 4501 stream,river,lake or groundwater.Watersheds come in all shapes and sizes,crossing county.state, Valley Sanitary District (760)347-2356 �, and national boundaries,therefore many of ouractivifies at home,work or play affect the quality of our Western Municipal Water District (951)789-5000 =>"' watersheds. Yucaipa Valley Water District (909)797-5117 Z' In accordance with state and federal law to protect our watersheds,the CITIES AND COUNTY OF To report illegal dumping into storm drains or RIVERSIDE have adopted ordinances for stormwater management and discharge control to prohibit clogged storm drains,please call the discharge of wastes into the storm drain system or local surface waters. This INCLUDES 1-800-506-2555 discharge of wash water from outdoor cleaning activities which may contain pollutants such as oil, { o/wash water fta�a. grease,detergent,degreasers,trash,pet waste or other materials. Online resources include: Far disposal Of MIi1Er twater„AIM Riverside County Flood Control Dai outreach materials page: j Sidewalk,plaza or parking lot cleaning l(J— www.floodcontrol.co.riverside.ca.ac I i Vehicle washing or detailing - California Storm Water Quality Association .1 Building exterior cleaning wvrw.casoa.ora or www.cabmohandbooks.com J Waterproofing Stale Water Resources Control Board.Water Quality J Equipment cleaning or degreasi --wvrx.swrch ca.aovlstormwtr/n lex html U.S.Environmental Protection Agency PLEASE NOTE: Check with your Regional Water Quality Control Board, local municipal vrww.eoa.nmrl000cr^�Iwnel�ooamsrbuspra<nL:- _ government and water agencies on what the restrictions are in your area. Help Protect our waterways! Use These Guidelines For Outdoor Cleaning Activities and Wash Water Disposal DO NOT . . . dispose of water DO NOT . . . Dispose of leftover USING CLEANING AGENTS: OTHER TIPS TO HELP PROTECT OUR containing soap or any other type of cleaning agents into the gutter. stone drain If you must use soap, use biodegradable/ WATER. . cleaning agent into a storm drain or water or sanitary sewer. phosphate-free cleaners.Although the use of SCREENING WASH WATER body.This is a direct violation of state and/or nontoxic cleaning products is strongly local regulations.Because wash water from UO . . . understand that wash water encouraged, do understand that these A thorough dry cleanup before washing cleaning parking areas may contain metallic (without soap)used to repave dust from a products can degrade water quality. The exterior surfaces such as building and decks brake pad dust, oil and other automotive clean vehicle may be discharged to a street discharge of these products into the street, without loose paint, sidewalks, or plaza Fluids, litter, food wastes and other or drain.Wash water from sidewalk, plaza, gutters, storm drain system or waterways is areas, should be sufficient to protect materials, if should never be discharged to and building surface cleaning may go into a prohibited by local ordinances and the State receiving waters. HOWEVER, if any debris Water Code.Avoid use of petroleum-based (solids)could enter storm drains or remain in a street,gutter or storm drain. street o storm drain IF ALL of the following Water gutter or street after cleaning,wash water cleaning products. cenditins are met: should first pass through a"20 mesh"or finer DO . . . dispose of small amounts of 1 The surface being washed is free of screen to catch the solid materials,the mesh wash water from cleaning building residual oil, debris and other materials should then be disposed of in the trash. exteriors, sidewalks or plazas onto by using dry cleanup methods (i.e., , DRAIN INLET PROTECTIOWCONTAINMENT & landscaped or unpaved surfaces, provided sweeping, and cleaning any oil or `� COLLECTION OF WASH WATER you have the owner's permission and the chemical spills with rags or other discharge will not cause nuisance problems absorbent materials before using • Sand bags can be used to create a barrier or flow into a street or stone drain. water). around stone drain inlets. UO . . . check with your sanity sewer 2. Washing is done with water only, not • Plugs or rubber mats can be used to yo sanitary / temporarily seal stone drain openings. agency's policies and requirements with soap or other cleaning materials. concerning wash water disposal. Wash 3. You have not used the water to remove Containment pads, temporary berms or water from outdoor cleaning activities may paint from surfaces during cleaning. vacuum brooms can be used to contain and collect wash water. be acceptable for disposal to the sanitary sewer with specific permission. See the list ,/ EGuIPMENT AND SUPPLIES on the back of this flyer for phone numbers CALL -800-506-2555 of the sanitary sewer agencies inyourarea. TO REPORT ILLEGAL POLLUTING Special materials such as absorbents,storm OF STORM DRAINS drain plugs and seals, small sump pumps, When cleaning surfaces with a high-pressure and vacuum booms are available from many DO . . . Understand that mobile auto 0 II washer or steam cleaning methods, vendors. For more information, check detailers should divert wash water to e f�. additional precautions should be taken to catalogs such as New Pig (800-468-4647, landscaped or dirt areas. Be aware that r , prevent the discharge of pollutants into the www.riewpig.com), Lab Safety Supply(800- soapy wash water may damage ��'i'� stone drain system. These two methods of 356-0783), C&H (800-558-9966), and W.W. landscaping. Residual wash water may �. surface cleaning,as compared to the use of a Grainger (800-994-9174); or call the remain on paved surfaces to evaporate. low-pressure hose. can repave additional Cleaning Equipment Trade Association(800- Residues should be swept up and disposed or visit materials that can contaminate local 441-0111) or the Power Washers of North Of. www.floodcontrol.co.riverside.ca.us waterways. America(800-393-PWNA). Helpful telephone numbers and!inks: Do you know , r .where the water actually goes? RIVERSIDE COUNTY WATER AGENCIES: stodotel Pollution Qryde.nnsg (95On-313p / Storm Brains are not CiNdeeeuaont 195t)MIM20 Qry d Blythe 06g)M-6161 CityaCoacntlw (710)39a35o2 What you should knew f or.,. — connects to sanitary Coatlgla Valley Wear Dlalrel (y60)N 2651 CaydGa or (951)227.3203 ��I - - sewer systems and Eased Cenleribal ate (m60)22R3293 Eeahch Municwal Water dstrtl (951)614-314 I'shn,e Vzni WawC (951)2"1146 City hornet Company (95t)2aa3712 C/ treatment plants! Cam d hornet (gsq ysS31R J..,a W.I.Wa n,hn'se (95tI659-2143 \ Lako H h,el lA any Services De,ntt (951)360.6295 Lakaour water MwD (951)MI)277-3z41 The primary purpose of storm drains is to carry rain water away from Me"bAirLee Lakei'muellaw ("I)me-16t4 l' mgKicrn sParvs water D,mla ;w)3�2sBa4�0B _ developed areas to prevent flooding. Untreated storm water and the q4 0s „�° a pollutants it carries flow directly into rivers, lakes,and streams.Wastewater "pl.y.Carl.ftt? Wa"0°' 'm°�900 from residential swimming pools, jacuzzis, fishponds, and fountains often C1I,.F CBP a02 (y00)351-61 1 Clue.G..e (95u35,-6110 contain chemicals used for sanitizing or cleansing purposes. Toxic Se raom CoClub.I t'servtrae aevid less ee4a56e 9 9 P P stle"S.'",CAArm (65t3649d501 chemicals (such as chlorine or copper-based algaecides)can damage the vYwY Sanaary Dletrkl 1280)34t2356 Weelam Mur¢on Wale,Demo. (9s1)'ea5°°0 environment when wastewater is allowed to flow into our local rivers, lakes, neap.Vahan,W.;®Dstnn 1909)N2-5117 and streams by way of the storm drain system. Each of us can do our part to CALL 1-800-506-2555 to: help clean ou r water,and that adds up to a pollution solution. RIHNM d.AM aYem MprS" &,W 9plm Araln bee rat n"n rev w,aena nauam �mm el.`nrw,remr�a„ .r�a like,:oo mekP The Cities and County of Riverside have adopted ordinances for storm drain 1,reeuia. BatharaawwaerBoa«. °pAOrr'p"""eof0Irbear"d°a,bhkala pollution management to maintain discharge control and prevent illegal L.A.lxa;e the mw era Mw d nbiedrola twmdoua Waex(W W/t P g g P g 1"ile,4uhE"'t storm drain discharge. In accordance with state and federal law, these local PepeSl.din.npvM14ahmf,"tlnavpan Pr¢eenaaom. Lxeapaar caddy Wwiimme,alserviea storm water ordinances prohibit the cischar a of pollutants into the storm P 9 Pecerve eraaagdag 'nr"'"a'"" an6 wmpmag wakshup drain system or local surface waters. The Only Rain in the Storm Drain Mmruem u usu• ........................ ,._. Pollution Program informs residents and businesses of storm drain pollution A nsa our(Rrvasbe Count'Flood Cpnirpl Diana wahsae al: ® �� 9 wvpy,jlpgQgg]r[pf,te rlveR'da ca.Y1 prevention activities such as those described in this brochure. Other links to additional storm drain pollution Information: County of In,th kw Erwimnmental R9a m. -- runcpen bag _-- CabWn'.Saw Walcr Resound Talk Fa - mmW'.SYMR.tr➢W1 ForahVd California Water alq Task Duu: dd r d wunv�allna M1arMeapks.coM "V4� 1~n•�• F } !' Un teo sate Enmrpnmmal PMpclan n8cY a^ (EPAp —�_ 1j ♦ 4r wr1'L.N'.etM pOYraf✓DILr$32CPnleIML9ra:31413ArG_M1;m kon,p�w,y �a�a� maum' Swimming Pool, _ Jacuzzi and a. Fountain Maintenance PLEASE NOTE: The discharge of pollutants into the street, gutters,storm drain BWIa3Yw Canny 1,rhin m the Sann Dran 1,61uh.Proles.r Mogrnr gbildully knmvl„dgr„ the Bar Ara„ Slnrm„rat- system,or waterways-without a Regional Water Quality Control board permit or MenagemmlR9anoes Aasoca6on and the ClearAng Enurement iwk Aaunmr nl"inlnmwlk,np,pvM.nrnnuahr":h,n„ waiver-is strictly prohibited by local ordinances and state and federal law. No Your Part to Protect Our Waterways! Use These Guidelines For Proper Draining of Your Swimming Pool, Jacuzzi and Fountain Water Discharge Regulations Refinishing Pool Surfaces Cleaning Filters Algaecides If you are resurfacing your pool, or Requirements for pool draining resurfacing the pool patio area, be sure to Discharge of pod filter rinse water and Avoid using copper- —� may differfrom city to city. hose down mixers,tools and trailers in a dirt backflush to stream,ditch,or storm drain is based algaecides Check with yourwater area where rinse water won't flow into the prohibited.Backflush from pod filters must be unless absolutely agency to see if disposal to the street, gutter or storm drain. local storm discharged to the sanitary sewer, on-site necessary. Control sanitary sewer line Is water ordinances strictly prohibit the septic lank and drainfield system (if property algae with chlorine, allowed for pool discharges discharge of pollutants into the storm drain designed and adequately sized), or a organic polymers or (see reverse side for Riverside County water system. seepage pit. Altematively, pool filter rinse other alternatives to purveyors). water and backwash may be diverted to dirt or copper-based pool _ Residues from add washing and similar landscaped areas. Filter media and other chemicals. Copper is If sewer discharge is allowed,a hose can be activities require special handling. Never solids should be picked up and disposed of in a heavy metal that can run from your swimming pool pump to the discharge low or high pH wastewater into the the trash. be toxic to aquatic life. washing machine drain or a sink or bathtub.If street,gutter or storm drain. sewer discharge is not allowed, or If your house is served by a septic tank, review the Chemical Storage and options presented below. M�+ .,r„ Handling Proper Disposal of Pool Discharge Options �� Use only the amount Chemicals If our local sewer agency will not accept of water into theirs stem, indicated on product If you need to dispose of unwanted Y 9 cy P Po y labels. I chemicals,first t giving them or if you are on a septic tank system,follow these guidelines: �� Poo ryg g 1. Reduce or eliminate solids(e.g.,debris, leaves or dirt)in the pool Store chlorine and to a neighbor with i pool. If that doesn't work, bring unwanted water. other chemicals in a pool chemicals to a Household 2. Allow the chemicals in the pool water to dissipate. This could take covered area to Hazardous Waste (HHW) upto seven(7)days depending on the time of year. Create a co-op;let prevent runoff. Collection Event. There's no cost your neighbor share your pool while theirs is being prepared for draining, Keep out of reach for bringing HHW items to collection then use their pool while yours is being drained.Chlorinated water should not be discharged of children and g g into the storm drain or surface waters.This includes large pools such as community swimming events -it's FREE! Call 1.800.506- poolsorspas. pets. 2555 for a schedule of HHW events in 3. When the pool water Is free of all chemicals(verify by a home pool water test kit)drain pool Chlorine kits, available at your community. waterto landscaped areas.lawns,yards.orany areas thatwill absorb the water. retail swimming pool equipment and 4. You may have to drain the pool water over a period of a few days to allow the landscape areas to supply stores, should be used to monitor absorb most of the water. the chlorine and pH levels. 5. Control the flow of the draining pool water to prevent soil erosion. Do not allow sediment to enter the street.gutter or storm drain. Chlorine and other pool chemicalsshould NEVER put unused chemicals 6. Avoid discharging pool water into the street and storm drain system. Water runoff that enters never be allowed to flow into the gutter or into the trash, onto the ground the street can pick up motor oil,pet waste,trash and other pollutants,eventually carrying them the storm drain system. or down a storm drain. into the storm drain system and local surface waters. • 3.5 Bioretention Facility Type of BMP LID—Bioretention Treatment Mechanisms Infiltration, Evapotranspiration,Evaporation,Biofiltration Maximum Drainage Area This BMP is intended to be integrated into a project's landscaped area in a distributed manner.Typically,contributing drainage areas to Bloretention Facilities range from less than 1 acre to a maximum of around 10 acres. Other Names Rain Garden,Bioretention Cell, Bioretention Basin,Biofiltration Basin, Landscaped Filter Basin, Porous Landscape Detention Description Bioretention Facilities are shallow, vegetated basins underlain by an engineered soil media. Healthy plant and biological activity in the root zone maintain and renew the macro-pore space in the soil and maximize plant uptake of pollutants and runoff. This keeps the Best Management Practice (BMP) from becoming clogged and allows` more of the soil column to function as both a sponge (retaining water) and a highly effective and self-maintaining biofilter. In most cases, the bottom of a Bioretention Facility is unlined, which also provides an opportunity for infiltration to the extent the underlying onsite soil can accommodate. When the infiltration rate of the underlying soil is exceeded, fully biotreated flows are discharged via • underdrains. Bioretention Facilities therefore will inherently achieve the maximum feasible level of infiltration and evapotranspiration and achieve the minimum feasible (but highly biotreated) discharge to the storm drain system. Siting Considerations These facilities work best when they are designed in a relatively level area. Unlike other BMPs, Bioretention Facilities can be used in smaller landscaped spaces on the site, such as: ✓ Parking islands ✓ Medians ✓ Site entrances Landscaped areas on the site (such as may otherwise be required through minimum landscaping ordinances), can often be designed as Bioretention Facilities. This can be accomplished by: • Depressing landscaped areas below adjacent impervious surfaces, rather than elevating those areas • Grading the site to direct runoff from those impervious surfaces into the Bioretention Facility, rather than away from the landscaping • Sizing and designing the depressed landscaped area as a Bioretention Facility as described in this Fact Sheet • Riverside County-Low Impact Development BAIP Design Handbook rev.212012 Page I Bioretention Facilities should however not be used downstream of areas where large amounts of sediment can clog the system. Placing a Bioretention Facility at the toe of a steep slope should also be avoided due to the potential for clogging the engineered soil media with erosion from the slope, as well as the potential for damaging the vegetation. Design and Sizing Criteria The recommended cross section necessary for a Bioretention Facility includes: • Vegetated area • 18' minimum depth of engineered soil media • 12' minimum gravel layer depth with 6' perforated pipes (added flow control features such as orifice plates may be required to mitigate for HCOC conditions) 6 MINIMUM TOP WIDTH 2' VARIES T' OR (DEPTH K S1DE SLOPE) I'MINIMUM )(DEPTH M SIDE SLOPE GILTRANS DT3 TYPE G-1 FUNCTIONAL EQUIVALENT DROP INLET SLOTTED CURB PONDING DEPTH PARpNG OR DRIVE AISLE(TYP) GRAVEL PAD 6'MAYJMUM PARKING OR DRIVE 4ISLE(TYP) 18'-36' MATURE VEGETATION ENGINEERED AND 7-3'MACH LAYER SOIL ARDIAI • PERFORATED APE 11E SUBORNNIMOINLET PEINMNG WAIL ME lA PER CALTUNS STANDARD B3.3 OR ENGINEERED ALTERNATIVE USED ON GEOTECMRCAL PARAMETERS While the 18-inch minimum engineered soil media depth can be used in some cases, it is recommended to use 24 inches or a preferred 36 inches to provide an adequate root zone for the chosen plant palate. Such a design also provides for improved removal effectiveness for nutrients. The recommended ponding depth inside of a Bioretention Facility is 6 inches; measured from the flat bottom surface to the top of the water surface as shown in Figure 1. Because this BMP is filled with an engineered soil media, pore space in the soil and gravel layer is assumed to provide storage volume. However, several considerations must be noted: • Surcharge storage above the soil surface (6 inches) is important to assure that design flows do not bypass the BMP when runoff exceeds the soil's absorption rate. • In cases where the Bioretention Facility contains engineered soil media deeper than 36 inches, the pore space within the engineered soil media can only be counted to the 36- inch depth. • A maximum of 30 percent pore space can be used for the soil media whereas a maximum of 40 percent pore space can be use for the gravel layer. • Riverside County-Low Impact Development RAIP Design Handbook rev.212012 Page 2 Figure 1: Standard Layout for a Bioretention Facility BIORETENTION FACILITY BMP FACT SHEET • Engineered Soil Media Requirements The engineered soil media shall be comprised of 85 percent mineral component.and 15 percent organic component, by volume, drum mixed prior to placement. The mineral component shall be a Class A sandy loam topsoil that meets the range specified in Table 1 below. The organic component shall be nitrogen stabilized compost', such that nitrogen does not leach from the media. Table 1: Mineral Component Range Requirements 70-90 Sand 15-20 Silt 5.10 Clay The trip ticket, or certificate of compliance, shall be made available to the inspector to prove the engineered mix meets Uiis specification. Vegetation Requirements Vegetative cover is important to minimize erosion and ensure that treatment occurs in the Bioretention Facility. The area should be designed for at least 70 percent mature coverage throughout the Bioretention Facility. To prevent the BMP from being used as.walkways, Bioretention Facilities shall be planted with a combination of, small trees, densely planted • shrubs, and natural grasses. Grasses shall be native or ornamental; preferably ones that do not need to be mowed. The application of fertilizers and pesticides should be minimal.To maintain oxygen levels for, the vegetation and promote biodegradation, it is important that vegetation not be completely submerged for any extended period of time. Therefore, 'a maximum of 6 inches of ponded water shall be used in the design to ensurethat plants within the Bioretention Facility remain healthy. A 2 to 3-inch layer of standard shredded aged hardwood mulch shall be placed as the top layer inside the Bioretention Facility. The 6-inch ponding depth shown in Figure 1 above shall be measured from the top surface of the 2 to 3-inch mulch layer. Curb Cuts To allow water to flow into the Bioretention Facility, 1-foot-wide (minimum) curb cuts should be placed approximately every 10 feet around the perimeter of the Bioretention Facility. Figure 2 shows a curb cut in a Bioretention Facility. Curb cut flow lines must be at or above the Vamp water surface level. • For more information on compost,visit the US Composting Council website at: httn://comoostinycouncil.om Riverside County-Low Impact Development BAIP Dertign Handbook rev.212012 Page 3 BIORETENTION FACILITY BMP FACT SHEET Figure 2:Curb Cut located In a Bloretention Facility To reduce erosion, a gravel pad shall be placed at each inlet point to the Bioretention Facility. The gravel should be 1- to 1.5-inch diameter in AZ_ size. The gravel should overlap the curb cut opening a minimum of 6 inches. The gravel pad inside the Bioretention Facility should be flush with the finished surface at the curb cut and extend to the bottom of the slope. In addition, place an apron of stone or concrete, • a foot square or larger, inside each inlet to prevent vegetation from growing up and 1 blocking the inlet. See Figure 3. Figure 3:Apron located In a Bioretention Facility Terracing the Landscaped Filter Basin It is recommended that Bioretention Facilities be level. In the event the facility site slopes and lacks proper design, water would fill the lowest point of the BMP and then discharge from the basin without being treated. To ensure that the water will be held within the Bioretention Facility on sloped sites, the BMP must be terraced with nonporous check dams to provide the required storage and treatment capacity. The terraced version of this BMP shall be used on non-flat sites with no more than a 3 percent slope. The surcharge depth cannot exceed 0.5 feet, and side slopes shall not exceed 4:1. Table 2 below shows the spacing of the check dams, and slopes shall be rounded up (i.e., 2.5 percent slope shall use 10' spacing for check dams). Table 2:Check Dam Spacing Slope Spacing 1% 25' 2% 15' • 3% 10' Riverside Cowry-Low lmpon Developmenr BALP Design Handbook rev.212012 Page 4 BIORETENTION FACILITY BMP FACT SHEET • Roof Runoff Roof downspouts may be directed towards Bioretention Facilities. However, the downspouts must discharge onto a concrete splash block to protect the Bioretention Facility from erosion. Retaining Walls It is recommended that Retaining Wall Type 1A, per Caltrans Standard 83-3 or equivalent, be constructed around the entire perimeter of the Bioretention Facility. This practice will protect the sides of the Bioretention Facility from collapsing during construction and maintenance or from high service loads adjacent to the BMP. Where such service loads would not exist adjacent to the BMP, an engineered alternative may be used if signed by a licensed civil engineer. Side Slope Requirements Bioretention Facilities Requiring Side Slopes The design should assure that the Bioretention Facility does not present a tripping hazard. Bioretention Facilities proposed near pedestrian areas, such as areas parallel to parking spaces or along a walkway, must have a gentle slope to the bottom of the facility. Side slopes inside of a Bioretention Facility shall be 4:1. A typical cross section for the Bioretention Facility is shown in Figure 1. Bioretention Facilities Not Requiring Side Slopes • Where cars park perpendicular to the Bioretention Facility, side slopes are not required. A 6- inch maximum drop may be used, and the Bioretention Facility must be planted with trees and shrubs to prevent pedestrian access. In this case, a curb is not placed around the Bioretention Facility, but wheel stops shall be used to prevent vehicles from entering the Bioretention Facility, as shown in Figure 4. VARIES 2,MINIMUM CALTRANS D73 TYPE G-1 OR FUNCTIONAL EQUIVALENT DROP INLET WHEELSTOP(AS NEEDED) PONDING DEPTH WHEELSTOP(AS NEEDED) 6"MAXIMUM PARKING(TYP PARKING(TYP) �lr MAT I AND 2-3 VEGETATIONLAY ENGINEERED " AND 2-3'MULCH LAYER SOILMEDIA RETAININGWAl17YPEIAPER , 6"PEAFORATED PIPE iIESU6DRAIN `'- CALTRANS STANDARD 03.3 OR INTO INLET ENGINEERED ALTERNATIVE BASED OH GEOTECHNICAL PARAMETERS • Riverside County-Low Impact Development BMP Design Handbook rev.212012 Page 5 BIORETENTION FACILITY BMP FACT SHEET • Planter Boxes Bioretention Facilities can also be placed above ground as planter boxes. Planter boxes must have a minimum width of 2 feet, a maximum surcharge depth of 6 inches, and no side slopes are necessary. Planter boxes must be constructed so as to ensure that the top surface of the engineered soil media will remain level. This option may be constructed of concrete, brick, stone or other stable materials that will not warp or bend. Chemically treated wood or galvanized steel, which has the ability to contaminate stormwater, should not be used. Planter boxes must be lined with an impermeable liner on all sides, including the bottom. Due to the impermeable liner, the inside bottom of the planter box shall be designed and constructed with a cross fall, directing treated flows within the subdrain layer toward the point where subdrain exits the planter box, and subdrains shall be oriented with drain holes oriented down. These provisions will help avoid excessive stagnant water within the gravel underdrain layer. Similar to the in-ground Bioretention Facility versions, this BMP benefits from healthy plants and biological activity in the root zone. Planter boxes should be planted with appropriately selected vegetation. i Figure 5: Planter Box Source:IA Team Effort Overflow An overflow route is needed in the Bioretention Facility design to bypass stored runoff from storm events larger than Vamp or in the event of facility or subdrain clogging. Overflow systems must connect to an acceptable discharge point, such as a downstream conveyance system as shown in Figure 1 and Figure 4. The inlet to the overflow structure shall be elevated inside the Bioretention Facility to be flush with the ponding surface for the design capture volume (Vamp) as shown in Figure 4. This will allow the design capture volume to be fully treated by the Bioretention Facility, and for larger events to safely be conveyed to downstream systems. The overflow inlet shall not be located in the entrance of a Bioretention Facility, as shown in Figure 6. • Riverside Cowry-Low Impact Development BAM Design Handbook rev. 212012 Page 6 BIORETENTION FACILITY BMP FACT SHEET • Underdrain Gravel and Pipes An underdrain gravel layer and pipes shall be provided in accordance with Appendix B— Underdrains. 1 i Figure 6:Incorrect Placement of an Overflow Inlet. Inspection and Maintenance Schedule • The Bioretention Facility area shall be inspected for erosion, dead vegetation, soggy soils, or standing water. The use of fertilizers and pesticides on the plants inside the Bioretention Facility should be minimized. Schedule Activity • Keep adjacent landscape areas maintained. Remove clippings from landscape maintenance activities. • Remove trash and debris Ongoing 0 Replace damaged grass and/or plants • Replace surface mulch layer as needed to maintain a 2-3 inch soil cove r. After storm events • Inspect areas forponding Annually • Inspect/clean inlets and outlets • Riverside Coma,-Low 1m1aN Development BAIP Design Handbook rev. 212012 Page 7 • Bioretention Facility Design Procedure 1) Enter the area tributary, AT, to the Bioretention Facility. 2) Enter the Design Volume, Vemp, determined from Section 2.1 of this Handbook. 3) Select the type of design used. There are two types of Bioretention Facility designs: the standard design used for most project sites that include side slopes, and the modified design used when the BMP is located perpendicular to the parking spaces or with planter boxes that do not use side slopes. 4) Enter the depth of the engineered soil media, ds. The minimum depth for the engineered soil media can be 18' in limited cases, but it is recommended to use 24' or a preferred 36' to provide an adequate root zone for the chosen plant palette. Engineered soil media deeper than 36' will only get credit for the pore space in the first 36'. 5) Enter the top width of the Bioretention Facility. 6) Calculate the total effective depth, dE, within the Bioretention Facility. The maximum allowable pore space of the soil media is 30% while the maximum allowable pore space for the gravel layer is 40%. Gravel layer deeper than 12' will only get credit for the pore • space in the first 12'. Wt 4dp wT-8dp 4dp 1 ` dr 1 d s a Engineered soil media with 30%pore space'; :Kok-e-fi=Mama a. For the design with side slopes the following equation shall be used to determine the total effective depth. Where, dp is the depth of ponding within the basin. 0.3 x [(wT(ft) x ds(ft)) + 4(dP(ft))21 + 0.4 x 1(ft) + dp(ft)[4dp(ft) + (wT(ft) — Bdp(ft))] dE(k) — wT(ft) This above equation can be simplified if the maximum ponding depth of 0.5' is used. The equation below is used on the worksheet to find the minimum area required for the Bioretention Facility: dE(ft) = (0.3 x ds(ft) + 0.4 x 1(ft)) — I .7 (ft2 I + 0.5(ft) is Riverside County.Low Impact Development BA1P Design Handbook rev. 212012 Page 8 b. For the design without side slopes the following equation shall be used to determine the total effective depth: ds(ft) = ds(ft) + [(0.3) x ds(ft) + (0.4) x 1(ft)] The equation below, using the maximum ponding depth of 0.5', is used on the worksheet to find the minimum area required for the Bioretention Facility: ds(ft) = 0.5 (ft) + [(0.3) x ds(ft) + (0.4) x 1(ft)] 7) Calculate the minimum surface area, AM, required for the Bioretention Facility.This does not include the curb surrounding the Bioretention Facility or side slopes. AM(ft2) o VaMP(ft3) dE (ft) 8) Enter the proposed surface area. This area shall not be less than minimum required surface area. 9) Verify that side slopes are no steeper than 4:1 in the standard design, and are not • required.in the modified design:, 10) Provide the diameter, minimum 6 inches, of the perforated underdrain used in the Bioretention Facility. See Appendix B for specific information regarding perforated pipes. 11) Provide the slope of the site around the Bioretention Facility, if used. The maximum slope is 3 percent for a standard design. 12) Provide the check dam spacing, if the site around the Bioretention Facility is sloped. 13) Describe the vegetation used within the Bioretention Facility. • Riverside Cmmry-Low Impact Development RAP Design Handbook rev.212012. Page 9 • References Used to Develop this Fact Sheet Anderson, Dale V. "Landscaped Filter Basin Soil Requirements." Riverside, May 2010. California Department of Transportation. CalTrans Standard Plans. 15 September 2005. May 2610<http://www.dot.ca.gov/hq/esc/oe/project_plans/HTM/stdpins-met-new99.htm>. Camp Dresser and McKee Inc.; Larry Walker Associates. California Stormwater Best Management Practice Handbook for New Development and Redevelopment. California Stormwater Quality Association (CASQA), 2004. Contra Costa Clean Water Program.Stormwater Quality Requirements for Development Applications. 3rd Edition. Contra Costa, 2006. County of Los Angeles Public Works.Stormwater Best Management Practice Design and Maintenance Manual,Los Angeles, 2069. Kim, Hunho, Eric A. Seagren and Allen P. Davis. "Engineered Bioretention for Removal of Nitrate from'StormwaterRunoff." Water Environment Research 75.4(2003): 355-366. LA Team Effort. LA Team Effort: FREE Planter Boxes for Businesses. 2 November 2009. May 2010<http://Iateameffort.blogspot.com/2009/11/free-planter-boxes-for-businesses-est.html>. • Montgomery County Maryland Department of Permitting Services Water Resources Section. Biofiltration (BF). Montgomery County, 2005. Program, Ventura Countywide Stormwater Quality Management. Technical Guidance Manual for Stormwater Quality Control Measures. Ventura, 2002. United States Environmental Protection Agency. Storm Water Technology Fact Sheet Bioretention. Washington D.C, 1999. Urban Drainage and Flood Control District. Urban Storm Drainage Criteria Manual Volume 3 - Best Management Practices.Vol. 3. Denver, 2008. 3 vols. Urbonas, Ben R. Stormwater Sand Filter Sizing and Design: A Unit Operations Approach. Denver: Urban Drainage and Flood Control District, 2002. Riverside Cowry-Low Impact Development BAIP Design Handbook rev. 212012 Page 10 EMPLOYEE EDUCATION LOG NAME NAME Date WQMP Print (Signature Materials Provided • • GROUNDSKEEPERS EDUCATION LOG NAME NAME Date WQMP Print (Signature Materials Provided • • Spill Prevention, Control & Cleanup SC-11 • Objectives ■ ■ Cover v ■ Contain ■ Educate ■ Reduce/Minimize ■ Product Substitution Photo Credit: Geoff Bnmeau Description Targeted Constituents Many activities that occur at an industrial or commercial site Sediment have the potential to cause accidental or illegal spills. Nutrients Preparation for accidental or illegal spills, with proper training Trash and reporting systems implemented,can minimize the discharge Metals 0 • of pollutants to the environment. Bacteria Spills and leaks are one of the largest contributors.of stormwater Oil and Grease 0 pollutants. Spill prevention and control.plans are applicable to Organics 0 any site at which hazardous materials are stored or used. An effective plan should have spill prevention and response procedures that identify potential spill areas,specify material handling procedures,describe spill response procedures, and, provide spill clean-up equipment. The plan should take steps to identify and characterize potential spills,eliminate and reduce spill potential, respond to spills when they occur in an effort to prevent pollutants from entering the stormwater drainage system, and train personnel to prevent and control future spills. Approach Pollution Prevention ■ Develop procedures to prevent/mitigate spills to storm drain systems. Develop and standardize reporting procedures, containment,storage,and disposal activities,documentation, and follow-up procedures. ■ Develop a Spill Prevention Control and Countermeasure (SPCA Plan. The plan should include: uLms�insroan+•nrm UUALIr1 n5AC1ATIUY ]anuary 2003 California Stormwater BMP Handbook 1 of 9 Errata 4-06 Industrial and Commercial www.cabmphandbooks.com SC-11 Spill Prevention, Control & Cleanup - Description of the facility,owner and address,activities and chemicals present - Facility map - Notification and evacuation procedures - Cleanup instructions - Identification of responsible departments - Identify key spill response personnel ■ Recycle,reclaim,or reuse materials whenever possible. This will reduce the amount of process materials that are brought into the facility. Suggested Protocols(including equipment needs) Spill Prevention ■ Develop procedures to prevent/mitigate spills to storm drain systems. Develop and standardize reporting procedures,containment,storage, and disposal activities, documentation,and follow-up procedures. ■ If consistent illegal dumping is observed at the facility: • - Post"No Dumping"signs with a phone number for reporting illegal dumping and disposal. Signs should also indicate fines and penalties applicable for illegal dumping. - landscaping and beautification efforts may also discourage illegal dumping. - Bright lighting and/or entrance barriers may'also be needed to discourage illegal dumping. ■ Store and contain liquid materials in such a manner,that if the tank is ruptured,the contents will not discharge,flow,or be washed into the storm drainage system,surface waters,or groundwater. ■ If the liquid is oil,gas,or other material that separates from and floats on water, install a spill control device(such as a tee section) in the catch basins that collects runoff from the storage tank area. ■ Routine maintenance: - Place drip pans or absorbent materials beneath all mounted taps, and at all potential drip and spill locations during filling and unloading of tanks.Any collected liquids or soiled absorbent materials must be reused/recycled or properly disposed. - Store and maintain appropriate spill cleanup materials in a location known to all near the tank'storage area;and ensure that employees are familiar with the site's spill control plan and/or proper spill cleanup procedures. • Sweep and clean the storage area monthly if it is paved,do not hose down the area to a storm drain. 2 of 9 California Stormwater BMP Handbook January 2003 Industrial and Commercial Errata 4-06 www.cabmphandbooks.com Spill Prevention, Control & Cleanup SC-11 Check tanks(and any containment sumps)daily for leaks and spills. Replace tanks that are leaking,corroded,or otherwise deteriorating with tanks in good condition. Collect all spilled liquids and properly dispose of them. ■ label all containers according to their contents (e.g.,solvent,gasoline). ■ Label hazardous substances regarding the potential hazard(corrosive, radioactive, flammable,explosive,poisonous). ■ Prominently display required labels on transported hazardous and toxic materials(per US DOT regulations). ■ Identify key spill response personnel. Spill Control and Cleanup Activities ■ Follow the Spill Prevention Control and Countermeasure Plan. ■ Clean up leaks and spills immediately. ■ Place a stockpile of spill cleanup materials where.it will be readily accessible (e.g., near storage and maintenance areas). ■ On paved surfaces,clean up spills with as little water as possible. Use a rag for small spills,a • damp mop for general cleanup,and absorbent material for larger spills. If the spilled material is hazardous,then the used cleanup materials are also hazardous and must be sent to a certified laundry(rags)or disposed of as hazardous waste. Physical methods for the cleanup of dry chemicals include the use-of brooms,shovels,sweepers,or.plows. ■ Never hose down or bury dry material spills. Sweep up the material and dispose of properly. ■ Chemical cleanups of material can be achieved with the use of adsorbents,gels,and foams. Use adsorbent materials on small spills rather than'hosing down the.spill. Remove the adsorbent materials promptly and dispose of properly. ■ For larger spills,a private spill cleanup company or Hazmat team may be necessary. Reporting ■ Report spills that pose an immediate threat to human health or the environment to the Regional Water Quality Control Board. ■ Federal regulations require that any oil spill into a water body or onto an adjoining shoreline be reported to the National Response Center(NRC)at 800-424-8802 (24 hour). ■ Report spills to local agencies,such as the fire department; they can assist in cleanup. ■ Establish'a system for tracking incidents. The system should be designed to identify the following: - Types and quantities(in some cases)of wastes • - Patterns in time of occurrence(time of day/night,month,or year) January 2003 California Stormwater 6MP Handbook 3 of 9 Errata 4-06 Industrial and Commercial ww w.ca b m p h a n d b oo ks.co m SC-11 Spill Prevention, Control & Cleanup - Mode of dumping(abandoned containers,`midnight dumping"from moving vehicles, direct dumping of materials,accidents/spills) - Responsible parties 7}aining ■ Educate employees about spill prevention and cleanup. ■ Well-trained employees can reduce human errors that lead to accidental releases or spills: - The employee should have the tools and knowledge to immediately begin cleaning up a spill should one occur. - Employees should be familiar with the Spill Prevention Control and Countermeasure Plan. ■ Employees should be educated about aboveground storage tank requirements., Employees responsible for aboveground storage tanks and liquid transfers should be thoroughly familiar with the Spill Prevention Control and Countermeasure Plan and the plan should be readily available. ■ Train employees to recognize and report illegal dumping incidents. • Other Considerations(Limitations and Regulations) ■ A Spill Prevention Control and Countermeasure Plan(SPCC)is required for facilities that are subject to the oil pollution regulations specified in Part 112 of Title 40 of the Code of Federal Regulations or if they have a storage capacity of lo,000 gallons or more of petroleum. (Health and Safety Code 6.67) ■ State regulations also exist for storage of hazardous materials(Health&Safety Code Chapter 6.95), including the preparation of area and business plans for emergency response to the releases or threatened releases. ■ Consider requiring smaller secondary containment areas(less than 200 sq. ft.)to be connected to the sanitary sewer, prohibiting any hard connections to the storm drain. Requirements Costs(including capital and operation&maintenance) ■ Will vary depending on the size of the facility and the necessary controls. ■ Prevention of leaks and spills is inexpensive. Treatment and/or disposal of contaminated soil or water can be quite expensive. Maintenance(including administrative and stq,frog) ■ This BMP has no major administrative or staffing requirements. However,extra time is needed to properly handle and dispose of spills, which results in increased labor costs. • 4 of 9 California Stormwater BMP Handbook January 2003 Industrial and Commercial Errata 4-06 www.cabm pha nd books.com Spill Prevention, Control & Cleanup SC-11 Supplemental Information Further Detail of the BMP Reporting Record keeping and internal reporting represent good operating practices because they can increase the efficiency of the facility and the effectiveness of BMPs. A good record keeping system helps the facility minimize incident recurrence,correctly respond with appropriate cleanup activities, and comply with legal requirements. A record keeping and reporting system should be set up for documenting spills, leaks,and other discharges, including discharges.of hazardous substances in reportable quantities. Incident records describe the quality and quantity of non-stormwater discharges to the storm sewer. These records should contain the following information: ■ Date and time of the incident ■ Weather conditions ■ Duration of the spill/leak/discharge ■ Cause of the spill/leak/discharge ■ Response procedures implemented ■ Persons notified • ■ Environmental problems associated with the spill/leak/discharge Separate record keeping systems should be established to document housekeeping and preventive maintenance.inspections,and training activities. All housekeeping and preventive maintenance inspections should be documented. Inspection documentation should contain the following information: ■ The date and time the inspection was performed ■ Name of the inspector ■ Items inspected ■ Problems noted ■ Corrective action required ■ Date corrective action was taken Other means to document and record inspection results are field notes,timed and dated photographs,videotapes,and drawings and maps. Aboveground Tank Leak and Spill Control Accidental releases of materials from aboveground liquid storage tanks present the potential for contaminating stormwater with many different pollutants. Materials spilled,leaked,or lost from January 2003 California Stormwater BMP Handbook 5 of 9 Errata 4-06 Industrial and Commercial www.cabmphandbooks.com SC-11 Spill Prevention, Control & Cleanup tanks may accumulate in soils or on impervious surfaces and be carried away by stormwater runoff. The most common causes of unintentional releases are: ■ Installation problems ■ Failure of piping systems(pipes,pumps,flanges,couplings, hoses,and valves) ■ External corrosion and structural failure ■ 'Spills and overfills due to operator error ■ Leaks during pumping of liquids or gases from truck or rail car to a storage tank or vice versa Storage of reactive,ignitable,or flammable liquids should comply with the Uniform Fire Code and the National Electric Code. Practices listed below should be employed to enhance the code requirements: ■ Tanks'should be placed in a designated area. ■ Tanks located in areas where firearms are discharged should be encapsulated in concrete or the equivalent. • ■ Designated areas should be impervious and paved with Portland cement concrete,free of cracks and gaps,in order to contain leaks and spills. ■ Liquid materials should be stored in UL approved double walled tanks,or surrounded by a curb or dike to provide the volume to contain to percent of the volume of all of the containers or tto percent of the volume of the largest container,whichever is greater. The area inside the curb should slope to a drain. ■ For used oil or dangerous waste,a dead-end sump should be installed in the drain. • All other liquids should be drained to the sanitary sewer if available.The drain must have a positive control such as a lock,valve,or plug to prevent release of contaminated liquids. ■ Accumulated stormwater in petroleum storage areas should be passed through an oil/water separator. Maintenance is critical to preventing leaks and spills. Conduct routine inspections and: ■ Check for external corrosion and structural failure. ■ Check for spills and overfills due to operator error. ■ Check for failure of piping system(pipes, pumps, Hanger,coupling, hoses, and valves). ■ Check.for leaks or spills during pumping of liquids or gases from truck or rail car to a storage facility or vice versa. • 6 of 9 California stormwater BMP Handbook January 2003 Industrial and Commercial Errata 4-06 www.cabmphandbooks.com Spill Prevention, Control & Cleanup SC-11 40 ■ Visually inspect new tank or container installation for loose fittings,poor welding,and improper or poorly fitted gaskets. ■ Inspect tank foundations,connections,coatings,and tank walls and piping system. Look for corrosion, leaks,cracks,scratches,and other physical damage that may weaken the tank or container system. ■ Frequently relocate accumulated stormwater during the wet season. ■ Periodically conduct integrity testing by a qualified professional. Vehicle Leak and Spill Control Major spills on roadways and other public areas are generally handled by highly trained Hazmat teams from local fire departments or environmental health departments. The measures listed below pertain to leaks and smaller spills at vehicle maintenance shops. In addition to implementing the spill prevention,control,and clean up practices above,use the following measures related to specific activities: Vehicle and Equipment Maintenance ■ Perform all vehicle fluid removal or changing inside or under cover to prevent the run-on of stormwater and the runoff of spills. • ■ Regularly inspect vehicles and equipment for leaks,and repair immediately. ■ Check incoming vehicles and equipment(including delivery truck's,and employee and subcontractor vehicles)for leaking oil and fluids. Do not allow leaking vehicles or equipment onsite. ■ Always use secondary containment,such as'a drain pan or drop cloth,to catch spills or leaks when removing or changing fluids. ■ Immediately drain all fluids from wrecked vehicles. ■ Store wrecked vehicles or damaged equipment under cover. ■ Place drip pans or absorbent materials under heavy equipment when not in use. ■ Use adsorbent materials on small spills rather than hosing down the spill. ■ Remove the adsorbent materials promptly and dispose of properly. ■ Promptly transfer used fluids to the proper waste or recycling drums. Don't leave full drip pans or other open containers lying around. ■ Oil filters disposed of in trashcans or dumpsters can leak oil and contaminate stormwater. Place the oil filter in a funnel over a waste oil recycling drum to drain excess oil before disposal. Oil filters can also be recycled. Ask your oil supplier or recycler about recycling oil filters. January 2003 California Stormwater BMP Handbook 7 of 9 Errata 4-06 Industrial and Commercial www.cabmphandbooks.com SC-11 Spill Prevention, Control & Cleanup ■ Store cracked batteries in a non-leaking secondary container. Do this with all cracked batteries,even if you think all the acid has drained out. If you drop a battery,treat it as if it is cracked. Put it into the containment area until you are sure it is not leaking. Vehicle and Equipment Fueling ■ Design the fueling area to prevent the run-on of stormwater and the runoff of spills: - Cover fueling area if possible. - Use a perimeter drain or slope pavement inward with drainage to a sump. - Pave fueling area with concrete rather than asphalt. ■ If dead-end sump is not used to-collect spills, install an oil/water separator. ■ Install.vapor recovery nozzles to help control drips as well as air pollution. ■ Discourage`topping-off of fuel tanks. ■ Use,secondary containment when transferring fuel from the tank truck to the.fuel tank. • Use adsorbent materials on small spills and general cleaning rather than hosing down the area. Remove,the adsorbent materials promptly. • ■ Carry out all Federal and State requirements regarding underground storage tanks, or install above ground tanks. ■ Do not use mobile fueling of mobile industrial equipment around the facility;rather, transport the equipment to designated fueling areas. ■ Keep your Spill Prevention Control and Countermeasure(SPCC) Plan up-to-date. ■ Train employees in proper fueling and cleanup procedures. Industrial Spill Prevention Response For the purposes of developing a spill prevention and response program to meet the stormwater regulations, facility managers should use information provided in this fact sheet and the spill prevention/response portions of the fact sheets in this handbook, for specific activities. The program should: ■ Integrate with existing emergency response/hazardous materials programs(e.g., Fire Department) ■ Develop procedures to prevent/mitigate spills to storm drain systems ■ Identify responsible departments ■ Develop and standardize reporting procedures, containment,storage,and disposal activities, documentation,and follow-up procedures • ■ Address spills at municipal facilities,as well as public areas 8 of 9 California stormwater BMP Handbook January 2003 Industrial and Commercial Errata 4-06 www.cabmphandbooks.com Spill Prevention, Control & Cleanup SC-11 ■ Provide training concerning spill prevention, response and cleanup to all appropriate personnel References and Resources California's Nonpoint Source Program Plan httn://www.swrcb.ca.gov/nos/index.html Clark County Storm Water Pollution Control Manual http://%%,ww.co.clark.wa.us/pubworks/bmpman.pdf King County Storm Water Pollution Control Manual http://dnr.metrokc.gov/wlr/dss/spem.htm Santa Clara Valley Urban Runoff Pollution Prevention Program httn://i%,Ww.scvuEppp.org The Stormwater Managers Resource Center httn//www.stonnwatercenter.net/ January 2003 California Stormwater BMP Handbook 9 of 9 Errata 4-06 Industrial and Commercial www.cabmphandbooks.com Waste Handling & Disposal SC-34 • Objectives A ` � ■ Cover I ■ Contain - ■ Educate ■ Reduce(Minimize ■ Product Substitution Description Targeted Constituents Improper storage and handling of solid wastes can allow toxic compounds,oils and greases,heavy metals,nutrients,suspended Sediment solids, and other pollutants to enter stormwater runoff. The Nutrients discharge of pollutants to stormwater from waste handling and Trash disposal can be prevented and reduced by tracking waste Metals ✓ • generation,storage,and disposal; reducing waste generation and Bacteria ✓ disposal through source reduction,reuse,and recycling; and Oil and Grease ✓ preventing run-on and runoff. Organics ✓ Approach Pollution Prevention ■ Accomplish reduction in the amount of waste generated using the following source controls: - Production planning and sequencing - Process or equipment modification - Raw material substitution or elimination - Loss prevention and housekeeping - Waste segregation and separation - Close loop recycling ■ Establish a material tracking system to increase awareness about material usage. This may reduce spills and minimize contamination,thus reducing the amount of waste produced. (,i CalMo.ma Stormwater • ■ Recycle materials whenever possible. Cuatny Auoclatlon January 2003 California Stormwater BMP Handbook 1 of S Industrial and Commercial www.cabmphandbooks.com SC-34 Waste Handling & Disposal Suggested Protocols General ■ Cover storage containers with leak proof lids or some other means. If waste is not in containers,cover all waste piles(plastic tarps are acceptable coverage)and prevent stormwater run-on and runoff with a berm. The waste containers or piles must be covered except when in use. ■ Use drip pans or absorbent materials whenever grease containers are emptied by vacuum trucks or other means. Grease cannot be left on the ground. Collected grease must be properly disposed of as garbage. ■ Check storage containers weekly for leaks and to ensure that lids are on tightly. Replace any that are leaking,corroded,or otherwise deteriorating. ■ Sweep and clean the storage area regularly. If it is paved,do not hose down the area to a storm drain. ■ Dispose of rinse and wash water from cleaning waste containers into a sanitary sewer if allowed by the local sewer authority. Do not discharge wash water to the street or storm drain. ■ Transfer waste from damaged containers into safe containers. ■ Take special care when loading or unloading wastes to minimize losses. Loading systems can be used to minimize spills and fugitive emission losses such as dust or mist. Vacuum transfer systems can minimize waste loss. Controlling.Litter ■ Post"No Littering"signs and enforce anti-litter laws. ■ Provide a sufficient number of litter receptacles for the facility. ■ Clean out and cover litter receptacles frequently to prevent spillage. Waste Collection ■ Keep waste collection areas clean. ■ Inspect solid waste containers for structural damage regularly. Repair or replace damaged containers as necessary. ■ Secure solid waste containers;containers must be closed tightly when not in use. ■ Do not fill waste containers with washout water or any other liquid. ■ Ensure that only appropriate solid wastes are added to the solid waste container. Certain wastes such as hazardous wastes,appliances, fluorescent lamps, pesticides,etc., may not be disposed of in solid waste containers(see chemical/ hazardous waste collection section below). • 2 of 5 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Waste Handling & Disposal SC-34 ■ Do not mix wastes;this can cause chemical reactions,make recycling impossible,and complicate disposal. Good Housekeeping ■ Use all of the product before disposing of the container. ■ Keep the waste management area clean at all times by sweeping and cleaning up spills immediately. ■ Use dry methods when possible(e.g.,sweeping,use of absorbents) when cleaning around restaurant/food handling dumpster areas. If water must be used after sweeping/using absorbents,collect water and discharge through grease interceptor to the sewer. Chemical/Hazardous Wastes ■ 'Select designated hazardous waste collection areas on-site. ■ Store hazardous materials and wastes in covered containers and protect them from vandalism. ■ Place hazardous waste containers in secondary containment. ■ Make sure that hazardous waste is collected, removed,and disposed of only at authorized disposal areas. • ■ Stencil or demarcate storm drains on the facility's property with prohibitive message regarding waste disposal. Run-on/Runoff Prevention ■ Prevent stormwater run-on from entering the waste management area by enclosing the area or building a berm around the area. ■ Prevent waste materials from directly contacting rain. ■ Cover waste piles with temporary covering material such as reinforced tarpaulin, polyethylene,polyurethane, polypropyleneor hypalon. ■ Cover the area with a permanent roof if feasible. ■ Cover dumpsters to prevent rain from washing waste out of holes or cracks in the bottom of the dumpster. ■ Move the activity indoor after ensuring all safety concerns such as fire hazard and ventilation are addressed. Inspection ■ Inspect and replace faulty pumps or hoses regularly to minimize the potential of releases and spills. ■ Check waste management areas for leaking containers or spills. • January 2003 California Stormwater BMP Handbook 3 of 5 Industrial and Commercial _ www.cabmphandbooks.com SC-34 Waste Handling & Disposal • ■ Repair leaking equipment including valves, lines,seals,or pumps promptly. Training ■ Train staff in pollution prevention measures and proper disposal methods. ■ Train employees and contractors in proper spill containment and cleanup. The employee should have the tools and knowledge to immediately begin cleaning up a spill should one occur. ■ Train employees and subcontractors in proper hazardous waste management. Spill Response and Prevention ■ Keep your Spill Prevention Control and Countermeasure(SPCC)Plan up-to-date. ■ Have an emergency plan;equipment and trained personnel ready at.all times to deal immediately with major spills ■ Collect all spilled liquids and properly dispose of them. ■ Store and maintain appropriate spill cleanup materials in a location known to all near the designated wash area. ■ Ensure that vehicles transporting waste have spill prevention equipment that can prevent spills during transport. Spill prevention equipment includes: •' - Vehicles equipped with baffles for liquid waste - Trucks with sealed gates and spill guards for solid waste Other Considerations(Limitations and Regulations) Hazardous waste cannot be reused or recycled; it must be disposed of by a licensed hazardous waste hauler. Requirements Costs Capital and C&M costs for these programs will vary substantially depending on the size of the facility and the types of waste handled. Costs should be low if there is an inventory program in place. Maintenance ■ None except for maintaining equipment for material tracking program. Supplemental Information Further Detail of the BMP Land Treatment System Minimize runoff of polluted stormwater from land application by: ■ Choosing a site where slopes are under 6%,the soil is permeable,there is a low water table, • it is located away from wetlands or marshes,and there is a closed drainage system 4 of 5 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Waste Handling & Disposal SC-34 ' ■ Avoiding application of waste to the site when it is raining or when the ground is saturated with water ■ Growing vegetation on land disposal areas to stabilize soils and reduce the volume of surface water runoff from the site ■ Maintaining adequate barriers between the land application site and the receiving waters (planted strips are particularly good) ■ Using erosion control techniques such as mulching and matting, filter fences,straw bales, diversion terracing,and sediment basins ■ Performing routine maintenance to ensure the erosion control or site stabilization measures are working Examples The port of Long Beach has a state-of-the-art,database for identifying potential polhltant sources,documenting facility management practices, and tracking pollutants. References and Resources California's Nonpoint Source Program Plan httn://www.swrcb.ca.gov/nos/index.html Clark County Storm Water Pollution Control Manual httn://www.co.clark.wa.us/pubworks/bmpman.pdf Solid Waste Container Best Management Practices— Fact Sheet On-Line Resources— Environmental Health and Safety. Harvard University. 2002. King County Storm Water Pollution Control Manual h"p://dnr.metroke.gov/wlr/dss/spcm.htm Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwater Management Agencies Association(BASMAA). httn://www.basmaa.org Santa Clara Valley Urban Runoff Pollution Prevention Program httn://www.scvurppp.org The Storm Water Managers Resource Center http://www.stormwatercenter.net/ • ]anuary2003 - California Stormwater BMP Handbook 5 of 5 Industrial and Commercial www.cabmphand books.com Building & Grounds Maintenance SC-41 • Objectives ■ Cover ■ Contain .- ■ Educate 4 — ■ Reduce/Minimize - ail ■ ■ Product Substitution Targeted Constituents Description Sediment ✓ Stormwater runoff from building and grounds maintenance Nutrients ./ activities can be contaminated with toxic hydrocarbons in Trash solvents,fertilizers and pesticides,suspended solids, heavy Metals ./ ,• metals, abnormal pH,and oils and greases. Utilizing the Bacteria ./ protocols in this fact sheet will prevent or reduce the discharge of Oil and Grease pollutants to stormwater from building and grounds Organics maintenance activities by washing and cleaning up with as little water as possible, following good landscape management practices, preventing and cleaning up spills immediately,keeping debris from entering the storm drains,and maintaining the stormwater collection system. Approach Reduce potential for pollutant discharge through source control pollution prevention and BMP implementation. Successful implementation depends on effective training of employees on applicable BMPs and general pollution prevention strategies and objectives. Pollution Prevention ■ Switch to-non=toxic chemicals for maintenance when possible; ■ Choose cleaning agents that can be recycled. ■ Encourage proper lawn management and landscaping, °' S Q.A including use of native vegetation. r`' Glfro.nfa Stormwater Ouarfty • Ass«latlon January 2003 California Stormwater BMP Handbook 1 of 5 Industrial and Commercial www.cabmphandbooks.com SC-41 Building & Grounds Maintenance ■ Encourage use of Integrated Pest Management techniques for pest control. ■ Encourage proper onsite recycling of yard trimmings. ■ Recycle residual paints,solvents,lumber,and other material as much as possible. Suggested Protocols Pressure Washing ofBuildings,Rooftops,and Other Large Objects ■ In situations where soaps or detergents are used and the surrounding area is paved, pressure washers must use a water collection device that enables collection of wash water and associated solids.A sump pump,wet vacuum or similarly effective device must be used to collect the runoff and loose materials.The collected runoff and solids must be disposed of properly. ■ If soaps or detergents are not used, and the surrounding area is paved,wash runoff does not have to be collected but must be screened. Pressure washers must use filter fabric or some other type of screen on the ground and/or in the catch basin to trap the particles in wash water runoff. ■ If you are pressure washing on a grassed area(with or without soap), runoff must be dispersed as sheet flow as much as possible, rather than as a concentrated stream.The wash runoff must remain on the grass and not drain to pavement. Landscaping Activities ■ Dispose of grass clippings,leaves,sticks,or other collected vegetation as garbage,or by composting. Do not dispose of collected vegetation into waterways or storm drainage systems. ■ Use mulch or other erosion control measures on exposed soils. Building Repair,Remodeling,and Construction ■ Do not dump any toxic substance or liquid waste on the pavement,the ground,or toward a storm drain. ■ Use.ground or drop cloths underneath outdoor painting,scraping,and sandblasting work, and properly dispose of collected material daily. ■ Use a ground cloth or oversized tub for activities such as paint mixing and tool cleaning. ■ Clean,paintbrushes and tools covered with water-based paints in sinks connected to sanitary sewers or in portable containers that can be dumped into a sanitary sewer drain. Brushes and tools covered with non-water-based paints, finishes,or other materials must be cleaned in a manner that enables collection of used solvents(e.g., paint thinner,turpentine,etc.)for recycling or proper disposal. ■ Use a storm drain cover,filter fabric,or similarly effective runoff control mechanism if dust, grit,wash water,or other pollutants may escape the work area and enter a catch basin. This is particularly necessary on rainy days.The containment device(s) must be in place at the beginning of the work day,and accumulated dirty runoff and solids must be collected and disposed of before removing the containment device(s)at the end of the work day. 2 of 5 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com - Building.& Grounds Maintenance SC-41 ■ If you need to de-water an excavation site,you may need to filter the water before discharging to a catch basin or off-site. If directed off-site,you should direct the water through hay bales and filter fabric or use other sediment filters or traps. ■ Store toxic material under cover during precipitation events and when not in use.A cover would include tarps or other temporary cover material. Mowing, Trimming, and Planting ■ Dispose of leaves,sticks,or other collected vegetation as garbage,by composting or at a permitted landfill. Do not dispose of collected vegetation into waterways or storm drainage systems. ■' Use mulch or other erosion control measures when soils are exposed. • Place temporarily stockpiled material away from watercourses and drain inlets,and berm or cover stockpiles to prevent material releases to the storm drain system. ■ Consider an alternative approach when bailing out.muddy water: do not put it in the storm drain; pour over landscaped areas. ■ Use'hand weeding where practical. Fertilizer and Pesticide Management • • Follow all federal,state,and local laws and regulations governing the use,storage,and disposal of fertilizers and pesticides and training of applicators and pest control advisors. ■ Use less toxic pesticides that will do the job when applicable. ,Avoid use of copper-based pesticides if possible. ■ Do not use pesticides if rain is expected. ■ Do not mix or prepare;pesticides for application near storm drains. ■ Use the minimum amount needed for the job. • Calibrate fertilizer distributors to avoid excessive application. ■ Employ techniques to minimize off-target application (e.g.,spray drift)of pesticides, including consideration of alternative application techniques. ■ Apply pesticides only when wind speeds are low. ■ Fertilizers should be worked into the soil rather than dumped or broadcast onto the surface. ■ Irrigate slowly to prevent runoff and then only as much as is needed. ■ Clean pavement and sidewalk if fertilizer is spilled on these surfaces before applying irrigation water. • ■ Dispose of empty pesticide containers according to the instructions on the container label. January 2003 California Stormwater BMP Handbook 3 of 5 Industrial and Commercial www.cabmphandbooks.com SC-41 Building & Grounds Maintenance ■ Use up the pesticides. Rinse containers,and use rinse water as product. Dispose of unused pesticide as hazardous waste. ■ Implement storage requirements for pesticide products with guidance from the local fire department and County Agricultural Commissioner. Provide secondary containment for pesticides. Inspection ■ Inspect irrigation system periodically to ensure that the right amount of water is being applied and that excessive runoff is not occurring. Minimize excess watering and repair leaks in the irrigation system as soon as they are observed. Training ■ Educate and train employees on pesticide use and in pesticide application techniques to prevent pollution. ■ Train employees and contractors in proper techniques for spill containment and cleanup. ■ Be sure the frequency of training takes into account the complexity of the operations and the nature of the staff. Spill Response and Prevention ■ Keep your Spill Prevention Control and Countermeasure(SPCC) Plan up-to-date. • ■ Place a stockpile of spill cleanup materials,such as brooms,dustpans,and vacuum sweepers (if desired)near the storage area where it will be readily accessible. ■ Have employees trained in spill containment and cleanup present during the loading/unloading of dangerous wastes,liquid chemicals,or other materials. ■ Familiarize employees with the Spill Prevention Control and Countermeasure Plan. ■ Clean up spills immediately. Other Considerations Alternative pest/weed controls may not be available,suitable,or effective in many cases. Requirements Costs ■ Cost will vary depending on the type and size of facility. ■ Overall costs should below in comparison to other BMPs. Maintenance Sweep paved areas regularly to collect loose particles. Wipe up spills with rags and other absorbent material immediately,do not hose down the area to a storm drain. • 4 of 5 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Building & Grounds Maintenance SC-41 Supplemental Information Further Detail of the BMP Fire Sprinkler Line Flushing Building fire sprinkler line flushing may be a source of non-stormwater runoff pollution. The water entering the system is usually potable water, though in some areas it may be non-potable reclaimed wastewater. There are subsequent factors that may drastically reduce the quality of the water in such systems. Black iron pipe is usually used since it is cheaper than potable piping,but it is subject to rusting and results in lower quality water. Initially,the black iron pipe has an oil coating to protect it from rusting between manufacture and installation; this will contaminate the water from the first flush but not from subsequent flushes. Nitrates, poly- phosphates and other corrosion inhibitors,as well as fire suppressants and antifreeze may be added to the sprinkler water system. Water generally remains in the sprinkler system a long time(typically a year)and between flushes may accumulate-iron,manganese,lead, copper, nickel,.and zinc. The water generally becomes anoxic and contains living and dead bacteria and breakdown products from chlorination. This may result in a significant BOD problem and the water often smells. Consequently dispose fire sprinkler line flush water into the sanitary sewer. Do not allow discharge to storm drain or infiltration due to potential high levels of pollutants in fire sprinkler line water. References and Resources California's Nonpoint Source Program Plan httn://www.swrcb.ca.gov/nps/index.html • Clark County Storm Water Pollution Control Manual http://www:co.clark.wa.us/pubworks/bmpman,pdf King County Storm Water Pollution Control Manual h"p://dnr.metrokc.gov/wlr/dss/spcm.htm Mobile Cleaners Pilot Program: Final Report. 1997. Bay Area Stormwater Management Agencies Association(BASMAA). http://www.basmaa.ory/ Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwater Management Agencies Association(BASMAA). http://www.basmaa&ML Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.scvuEppp.org The Storm Water Managers Resource Center http://www.stormwatercenter,netl January 2003 California Stormwater BMP Handbook 5 of 5 Industrial and Commercial www.cabmphandbooks.com Building Repair and Construction SC-42 • Objectives ■ Cover ■ Contain ■ Educate till _ jt P s Reduce/Minimize 0 '• . rf ■ Recycle CQ f�- ��I •um nnnium'' i uskr.. MI C can —�—•7;-_ h i Targeted Constituents Description Sediment ✓ Modifications are common particularly at large industrial sites. Nutrients The activity may vary from minor and normal building repair to Trash ✓ major remodeling,or the construction of new facilities. These Metals ✓ • activities can generate pollutants including solvents,paints, paint Bacteria and varnish removers,finishing residues,spent thinners,soap Oil and Grease ✓ cleaners,kerosene,asphalt and concrete materials,adhesive Organics ✓ residues, and old asbestos installation. Protocols in this fact sheet are intended to prevent or reduce the discharge of pollutants to stormwater from building repair, remodeling, and construction by using soil erosion controls,enclosing or covering building material storage areas,using good housekeeping practices, using safer alternative products,and training employees. Approach Pollution Prevention ■ Recycle residual paints,solvents,lumber,and other materials to the maximum extent practical. ■ Buy recycled products to the maximum extent practical. ■ Inform on-site contractors of company policy on these matters and include appropriate provisions in their contract to ensure certain proper housekeeping and disposal practices are implemented. �Q Q (CalHornl�" \ Stormwater • \ Quality � Assoclatlon January 2003 California Stormwater BMP Handbook 1 of 4 Industrial and Commercial www.cabmphandbooks.com SC-42 Building Repair and Construction ■ Make sure that nearby storm drains are well marked to minimize the chance of inadvertent disposal of residual paints and other liquids. Suggested Protocols Repair&Remodeling ■ .Follow BMPs identified in Construction BMP Handbook. ■ Maintain good housekeeping practices while work is underway. ■ Keep the work site clean and orderly. Remove debris in a timely fashion. Sweep the area. ■ Cover materials of.particular concern that must be left outside,particularly during the rainy season. ■ Do not dump waste liquids down the storm drain. ■ Dispose of wash water,sweepings,and sediments properly. ■ Store materials properly that are normally used in repair and remodeling such as paints and solvents. ■ Sweep out the gutter or wash the gutter and trap the particles at the outlet of the downspout if when repairing roofs,small particles have accumulated in the gutter. A sock or geofabric • placed over the outlet may effectively trap the materials. If the downspout is tight lined, place a temporary plug at the first convenient point in the storm drain and pump out the water with a vactor truck,and clean the catch basin sump where you placed the plug. ■ Properly store and dispose waste materials generated from construction activities. See Construction BMP Handbook. ■ Clean the storm drain system in the immediate vicinity of the construction activity after it is completed. Painting ■ Enclose painting operations consistent with local air quality regulations and OSHA. ■ Local air pollution regulations may,in many areas of the state,specify painting procedures which if properly carried out are usually sufficient to protect water quality. ■ Develop paint handling procedures for proper use, storage,and disposal of paints. ■ Transport paint and materials to and from job sites in containers with secure lids and tied down to the transport vehicle. ■ Test and inspect spray equipment prior to starting to paint. Tighten all hoses and connections and do not overfill paint containers. ■ Mix paint indoors before using so that any spill will not be exposed to rain. Do so even during dry weather because cleanup of a spill will never be i00%effective. • ■ Transfer and load paint and hot thermoplastic away from storm drain inlets. 2 of 4 California stormwater BMP Handbook January 2003 Industrial and Commercial ww w.ca bm p h a n d books.co m Building Repair and Construction. SC-42 ■ Do not transfer or load paint near storm drain inlets. ■ Plug nearby storm drain inlets prior to starting painting and remove plugs when job is complete.when there is significant risk of a spill reaching storm drains. ■ Cover nearby storm drain inlets prior to starting work if sand blasting is used to remove paint. ■ Use a ground cloth to collect the chips if painting requires scraping or sand blasting of the existing surface. 'Dispose the residue properly. • Cover or enclose painting operations properly to avoid drift. • Clean the application equipment in a sink that is connected to the sanitary sewer if using water based paints. ■ Capture all cleanup-water and dispose of properly. ■ : Dispose of.paints containing lead or tributyl tin and considered a hazardous waste properly. ■ Store leftover paints if they are to be kept for the next job properly,or dispose properly. ■ Recycle paint when possible. Dispose of paint at an appropriate household hazardous waste facility. • paining Proper education of off-site contractors is often overlooked. The conscientious efforts of well trained employees can be lost by unknowing off-site contractors,so make sure they are well informed about what they are expected to do. Spill Response and Prevention ■ Keep your Spill Prevention Control and Countermeasure(SPCC) Plan up-to-date. ■ Place a stockpile of spill cleanup materials where it will be readily accessible. ■ Clean up spills immediately. ■ Excavate and remove the contaminated (stained)soil if a spill occurs on dirt. Limitations ■ This BMP is for minor construction only. The State's General Construction Activity Stormwater Permit has more requirements for larger projects. The companion "Construction Best Management Practice Handbook"contains specific guidance and best management practices for larger-scale projects. ■ Hazardous waste that cannot be reused or recycled must be disposed of by a licensed hazardous waste hauler. • Be certain that actions to help stormwater quality are consistent with Cal- and Fed-OSHA • and air quality regulations. January 2003 California Stormwater BMP Handbook 3 of 4 Industrial and Commercial www.cabmphandbooks.com SC-42 Building Repair and Construction Requirements Costs These BMPs are generally low to modest in cost. Maintenance N/A, Supplemental Information Further Detail of the BMP Soil/Erosion Control If the work involves exposing large areas of soil,employ the appropriate soil erosion and control techniques. See the Construction Best Management Practice Handbook. If old buildings are being torn down and not replaced in the near future,stabilize the site using measures described in SC-40 Contaminated or Erodible Areas. If a building is to be placed over an open area with a storm drainage system,.makesure the storm inlets within the building are covered or removed,or the storm line is connected to the - sanitary sewer. If because of the remodeling a new drainage system is to be installed or the existing system is.to be modified,consider installing catch basins as they serve as effective"in- line"treatment devices. See Treatment Control Fact Sheet TC-2o Wet Pond/Basin in Section g. of the New Development and Redevelopment Handbook regarding design criteria. Include in • the catch basin a"turn-down"elbow or similar device to trap floatables. References and Resources California's Nonpoint Source Program Plan htto://www.swreb.ca.gov/nos/indek.html Clark County Storm Water Pollution Control Manual http://www.co.clark.wa.us/pubworksfbmpman;pdf King County Storm Water Pollution Control Manual http;//dnr.metrokc.gov/wlr/dss/spcm.htm Santa Clara Valley Urban Runoff Pollution Prevention Program htto://mvw.scvurnR�org The Storm Water Managers Resource Center htto://www.stormwatereenter.net/ • 4 of 4 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Parking/Storage Area Maintenance SC-43 • Objectives ■ Cover ■ Contain (� ■ Educate ■ Reduce/Minimize ■ Product Substitution r Targeted Constituents Description Sediment ✓ Parking lots and storage areas can contribute a number of Nutrients substances,such as trash,suspended solids, hydrocarbons,oil Trash ✓ and grease,and heavy metals that can enter receiving waters Metals ✓ • through stormwater runoff or non-stormwater discharges. The Bacteria protocols in this fact sheet are intended to prevent or reduce the Oil and Grease ✓ discharge of pollutants from parking/storage areas and include Organics ✓ using good housekeeping practices,following appropriate cleaning BMPs, and training employees. Approach The goal of this program is to ensure stormwater pollution prevention practices are considered when conducting activities on or around parking areas and storage areas to reduce potential for pollutant discharge to receiving waters. Successful implementation depends on effective training of employees on applicable BMPs and general pollution prevention strategies and objectives. Pollution Prevention ■ Encourage alternative designs and maintenance strategies for impervious parking lots. (See New Development and Redevelopment BMP Handbook) ■ Keep accurate maintenance logs to evaluate BMP implementation. �,/�!•CalHornla ,A,�Stormwater • Quailty Assoclatlon January 2003 Califomla Stormwater BMP Handbook 1 of 4 Industrial and Commercial www.cabmphandbooks.com SC-43 Parking/Storage Area Maintenance Suggested Protocols General ■ Keep the parking and storage areas clean and orderly. Remove debris in a timely fashion. ■ Allow sheet runoff to flow into biofilters(vegetated strip and swale)and/or infiltration devices. ■ Utilize sand filters or oleophilic collectors for oily waste in low quantities. ■ Arrange rooftop drains to prevent drainage directly onto paved surfaces. ■ Design lot to include semi-permeable hardscape. • Discharge soapy water remaining in mop or wash buckets to the sanitary sewer through a sink,toilet,clean-out,or wash area with drain. Controlling Litter. ■ Post"No Littering"signs and enforce anti-litter laws. ■ Provide an adequate number of litter receptacles. ■ Clean out and cover litter receptacles frequently to prevent spillage. • ■ Provide trash receptacles in parking lots to discourage litter. ■ Routinely sweep,shovel,and dispose of litter in the trash. Surface Cleaning ■ Use dry cleaning methods(e.g.,sweeping,vacuuming)to prevent the discharge of pollutants into the stormwater conveyance system if possible. ■ Establish frequency of public parking lot sweeping based on usage and field observations of waste accumulation. ■ Sweep all parking jots at least once before the onset of the wet season. ■ Follow the procedures below if water is used to clean surfaces: - Block the storm drain or contain runoff. - Collect and pump wash water to the sanitary sewer or discharge to a pervious surface. Do not allow wash water to enter storm drains. - Dispose of,parking lot sweeping debris and dirt at a landfill. ■ Follow the procedures below when cleaning heavy oily deposits: - Clean oily spots with absorbent materials. • - Use a screen or filter fabric over inlet,then wash surfaces. 2 of 4 California stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Parking/Storage Area Maintenance SC-43 - Do not allow discharges to the storm drain. - Vacuum/pump discharges to a tank or discharge to sanitary sewer. - Appropriately dispose of spilled materials and absorbents. Surface Repair ■ Preheat,transfer or load hot bituminous material away from storm drain inlets. ■ Apply concrete,asphalt,and seal coat during dry weather to prevent contamination from contacting stormwater runoff. ■ Cover and seal nearby storm drain inlets where applicable(with waterproof material or mesh)and manholes before applying seal coat,slurry seal,etc. Leave covers in place until job is complete and all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for-proper disposal. ■ Use only as much water as necessary for dust control,to avoid runoff. ■ Catch drips from paving equipment that is not in use with pans or absorbent material placed under the machines. Dispose of collected material and absorbents properly. Inspection • ■ Have designated personnel conduct inspections of parking facilities and stormwater conveyance systems associated with parking facilities on a regular basis. ■ Inspect cleaning equipment/sweepers for leaks on a regular basis. Training ■ Provide regular training to field employees and/or contractors regarding cleaning of paved areas and proper operation of equipment. ■ Train employees and contractors in proper techniques for spill containment and cleanup. Spill Response and Prevention ■ Keep your Spill Prevention Control and Countermeasure(SPCC) Plan up-to-date. n Place a stockpile of spill cleanup materials where it will be readily accessible or at a central location. ■ Clean up fluid spills immediately with absorbent rags or material. ■ Dispose of spilled material and absorbents properly. Other Considerations Limitations related to_sweeping activities at large parking facilities may include high equipment costs,the need for sweeper operator training,and the inability of current sweeper technology to remove oil and grease. • January 2003 California Stormwater BMP Handbook 3 of 4 Industrial and Commercial ww w.c a b m p h a n d boo k s.co m SC-43 Parking/Storage Area Maintenance Requirements Costs Cleaning/sweeping costs can be quite large. Construction and maintenance of stormwater structural controls can be quite expensive as well. Maintenance ■ 'Sweep parking lot regularly to minimize cleaning with water. ■ Clean out oil/water/sand separators regularly,especially after heavy storms. ■ Clean parking facilities regularly to prevent accumulated wastes and pollutants from being discharged into conveyance systems during rainy conditions. Supplemental Information Further Detail of f the BMP Surface Repair Apply concrete,asphalt,and seal coat during dry weather to prevent contamination from contacting stormwater runoff. Where applicable,cover and seal nearby storm drain inlets (with waterproof material or mesh)and manholes before applying seal coat,slurry seal,etc. leave covers in place until job is complete and all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for proper disposal. Only use only as much water as is necessary for dust control to avoid runoff. • References and Resources California's Nonpoint Source Program Plan http://www.swrcb.ca.gov/nps/index.htmi Clark County Storm Water Pollution Control Manual http://www.co.clark.wa.us/pubworks/bmpman.pd King County Storm Water Pollution Control Manual t p://dnr.metrokc.goy/wlr/dss/sucm.htm Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwater Management Agencies Association (BASMAA). httg//www.basmaa.org/ Oregon Association of Clean Water Agencies. Oregon Municipal Stormwater Toolbox for Maintenance Practices. June 1998. Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.sevurppp.org The Storm Water Managers Resource Center http://www.stormwatercenter.net/ • 4 of 4 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Drainage System Maintenance SC-44 • :q Objectives ■ Cover ■ Contain ■ Educate ■ Reduce/Minimize Description As a consequence of its function,the stormwater conveyance Targeted Constituents system collects and transports urban runoff and stormwater that Sediment ✓ may contain certain pollutants. The protocols in this fact sheet Nutrients are intended to reduce pollutants reaching receiving waters Trash ✓ through proper conveyance system operation and maintenance. Metals • Approach Bacteria ✓ Oil and Grease Pollution Prevention Organics Maintain catch basins,stormwater inlets,and other stormwater conveyance structures on a regular basis to remove pollutants, reduce high pollutant concentrations during the first flush of storms;prevent clogging of the downstream conveyance system, restore catch basins'sediment trapping capacity,and ensure the system functions properly hydraulically to avoid flooding. Suggested Protocols Catch Basins/Inlet Structures ■ Staff should regularly inspect facilities to ensure compliance with the following: - 'Immediate repair of any deterioration threatening structural integrity. - Cleaning before the sump is 40%full. Catch basins should be cleaned as frequently as needed to meet this standard. - Stenciling of catch basins and inlets(see SC34 Waste Q S Q.� Gllfornla Handling and Disposal). Stormwater • Cuallty ` Association .January 2003 California Stormwater BMP Handbook 1 of 6 Industrial and commercial www.cabmphandbooks.com SC-44 Drainage System Maintenance ■ Clean catch basins,storm drain inlets, and other conveyance structures before the wet season to remove sediments and debris accumulated during the summer. ■ Conduct inspections more frequently during the wet season for problem areas where sediment or trash accumulates more often. Clean and repair as needed. ■ Keep accurate logs of the number of catch basins cleaned. ■ Store wastes collected from cleaning activities of the drainage system in appropriate containers or temporary storage sites in a manner that prevents discharge to the storm drain. ■ Dewater the wastes if necessary with outflow into the sanitary sewer if permitted. Water should be treated with an appropriate filtering device prior to discharge to the sanitary sewer. If discharge to the sanitary sewer is not allowed,water should be pumped or vacuumed to a tank and properly disposed. Do not dewater near a storm drain or stream. Storm Drain Conveyance,System ■ Locate reaches of storm drain with deposit problems and develop a flushing schedule that keeps the pipe clear of excessive buildup. ■ Collect and pump flushed effluent to the sanitary sewer for treatment whenever possible. • Pump Stations ■ Clean all storm drain pump stations prior to the wet season to remove silt and trash. ■ Do not allow discharge to reach the storm drain system when cleaning a storm drain pump station or other facility. ■ Conduct routine maintenance at each pump station. ■ Inspect,clean,and repair as necessary all outlet structures prior to the wet season. Open Channel ■ Modify storm channel characteristics to improve channel hydraulics, increase pollutant removals,and enhance channel/creek aesthetic and habitat value. ■ Conduct channel modification/improvement in accordance with existing laws. Any person, government agency,or-public utility proposing an activity that will change the natural (emphasis added)state of any river,stream,or lake in California, must enter into a Steam or Lake Alteration Agreement with the Department of Fish and Game. The developer-applicant should also contact local governments(city,county,special districts),other state agencies (SWRCB, RWQCB, Department of Forestry, Department of Water Resources),and Federal Corps of Engineers and USFWS. Illicit Connections and Discharges ■ Look for evidence of illegal discharges or illicit connections during routine maintenance of conveyance system and drainage structures: • - Is there evidence of spills such as paints,discoloring,etc? 2 of 6 - California stormwater BMP Handbook ]anuary 2003 Industrial and Commercial www.cabmphandbooks.com .Drainage System Maintenance SC-44 Are there any odors associated with the drainage system? Record locations of apparent illegal discharges/illicit connections? Track flows back to potential dischargers and conduct aboveground inspections. This can be done through visual inspection of upgradient manholes or alternate techniques including zinc chloride smoke testing,fluorometric dye testing,physical inspection testing,or television camera inspection. Eliminate the discharge once the origin of flow is established. ■ Stencil or demarcate storm drains,where applicable,to prevent illegal disposal of pollutants. Storm drain inlets should have messages such as"Dump No Waste Drains to Stream" stenciled next to them to warn against ignorant or intentional dumping of pollutants into the storm drainage system. ■ Refer to fact sheet Si Non-Stormwater Discharges. Illegal Dumping ■ Inspect and clean up hot spots and other storm drainage areas regularly where illegal dumping and disposal occurs. ■ Establish a system for tracking incidents. The system should be designed to identify the following: - Illegal dumping hot spots - Types and quantities(in some cases) of wastes - Patterns in time of occurrence(time of day/night,month,or year) - Mode of dumping(abandoned containers, "midnight dumping"from moving vehicles, direct dumping of materials,accidents/spills) - Responsible parties ■ Post"No Dumping"signs in problem areas with a phone number for reporting dumping and disposal. Signs should also indicate fines and penalties for illegal dumping. ■ Refer to fact sheet SC-toNon-Stormwater Discharges. Training . ■ Train crews in proper maintenance activities,including record keeping and disposal. ■ Allow only properly trained individuals to handle hazardous materials/wastes. ■ Have staff involved in detection and removal of illicit connections trained in the following: OSHA-required Health and Safety Training(29 CFR 1910.120) plus annual refresher • training(as needed). January 2003 California Stormwater BMP Handbook 3 of 6 Industrial and Commercial - www.cabmphandbooks.com SC-44 Drainage System Maintenance - OSHA Confined Space Entry training(Cal-OSHA Confined Space,Title 8 and Federal OSHA 29 CFR 1910.146). - Procedural training(field screening,sampling,smoke/dye testing,TV inspection). Spill Response and Prevention ■ Investigate all reports of spills, leaks,and/or illegal dumping promptly. ■ Clean up all spills and leaks using"dry" methods(with absorbent materials and/or rags)or dig up, remove,and properly dispose of contaminated soil. ■ Refer to fact sheet SC-lt'Spill Prevention,Control,and Cleanup. Other Considerations(Limitations and Regulations) ■ Clean-up activities may create a slight disturbance for local aquatic species. Access to items and material on private property may be limited. Trade-offs may exist between channel hydraulics and water quality/riparian habitat. If storm channels or basins are recognized as wetlands,many activities, including maintenance,may be subject to regulation and permitting. ■ Storm drain flushing is most effective in small diameter pipes(36-inch diameter pipe or less, depending on water supply and sediment collection capacity). Other considerations associated with storm'drain flushing may include the availability of a water source,finding a • downstream area to collect sediments,liquid/sediment disposal,and prohibition against disposal of flushed effluent to sanitary sewer in some areas. ■ Regulations may include adoption of substantial penalties for illegal dumping and disposal. ■ Local municipal codes may include sections prohibiting discharge of soil,debris, refuse, hazardous wastes, and other pollutants into the storm drain system. Requirements Costs ■ An aggressive catch basin cleaning program could require a significant capital and O&M budget. ■ The elimination of illegal dumping is dependent on the availability,convenience,and cost of alternative means of disposal. The primary cost is for staff time. Cost depends on how aggressively a program is implemented. Other cost considerations for an illegal dumping program include:. - Purchase and installation of signs. - Rental of vehicle(s)to_haul illegally-disposed items and material to landfills. - Rental of heavy equipment to remove larger items(e.g.,car bodies)from channels: - Purchase of landfill space to dispose of illegally-dumped items and material. 4 of 6 - California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Drainage System Maintenance SC-44 ■ Methods used for illicit connection detection(smoke testing,dye testing,visual inspection, and flow monitoring)can be costly and time-consuming. Site-specific factors,such as the level of impervious area,the density and ages of buildings,and type of land use will determine the level of investigation necessary. Maintenance ■ Two-person teams may be required to clean catch basins with vactor trucks. ■ Teams of at least two people plus administrative personnel are required to identify illicit discharges, depending on the complexity of the storm sewer system. • Arrangements must be made for proper disposal of collected wastes. ■ Technical staff are required to detect and investigate illegal dumping violations. Supplemental Information Further Detail of the BMP Storm Drain Flushing Flushing is a common maintenance activity used to improve pipe hydraulics and to remove pollutants in storm drainage systems. Flushing maybe designed to hydraulically convey accumulated material to strategic locations,such as an open channel,another point where flushing will be initiated,or the sanitary sewer and the treatment facilities,thus preventing • resuspension and overflow of a portion of the solids during storm events. Flushing prevents plug flow"discharges of concentrated pollutant loadings and sediments. Deposits can hinder the designed conveyance capacity of the storm drain system and potentially cause backwater conditions in severe cases of clogging. Storm drain flushing usually takes place along segments of pipe with grades that are too flat to maintain adequate velocity to keep particles in suspension. An upstream manhole is selected to place an inflatable device that temporarily plugs the pipe. Further upstream,water is pumped into the line to create a flushing wave. When the upstream reach of pipe is sufficiently full to cause a flushing wave,the inflated device is rapidly deflated with the assistance of a vacuum pump,thereby releasing the backed up water and resulting in the cleaning of the storm drain segment. To further reduce impacts of stormwater pollution,a second inflatable device placed well downstream may be used to recollect the water after the force of the flushing wave has dissipated. A pump may then be used to transfer the water and accumulated material to the sanitary sewer for treatment. In some cases,an interceptor structure may be more practical or required to recollect the flushed waters. It has been found that cleansing efficiency of periodic flush Haves is dependent upon flush volume,flush discharge rate,sewer slope,sewer length,sewer flow rate,sewer diameter,and population density. As a rule of thumb,the length of line to be flushed should not exceed 700 feet. At this maximum recommended length,the percent removal efficiency ranges between 65- 75%for organics and 55-65%for dry weather grit/inorganic material. The percent removal efficiency drops rapidly beyond that. Water is commonly supplied by a water truck, but fire • hydrants can also supply water. To make the best use of water, it is recommended that reclaimed water be used or that fire hydrant line flushing coincide with storm sewer flushing. January 2003 California stormwater BMP Handbook 5 of 6 Industrial and Commercial www.ca b m p h a n d boo k s.co m SC-44 Drainage System Maintenance. References and Resources California's Nonpoint Source Program Plan hhttp://www.swreb.ca.gov/nps/index.html Clark County Storm Water Pollution Control Manual http://www.co.clark-.wa.0 /Vubworks/bmpman.pddf Ferguson, B.K. i99i. Urban Stream Reclamation,P. 324-322,Journal of Soil and Water Conservation. King County Storm,Water Pollution Control Manual httn://dnr.metrokc.gov/wlr/dss/spcm.htm Oregon Association of Clean Water Agencies. Oregon Municipal Stormwater Toolbox for Maintenance Practices. June 1998. Santa Clara Valley Urban Runoff Pollution Prevention Program ham://www;scvuEppp.org The Storm Water Managers Resource Center httn://www.stormwatereenter.net, United States Environmental Protection Agency(US EPA).. 2062. Pollution Prevention/Good Housekeeping for Municipal Operations Storm Drain System Cleaning. On line: http://www.epa.gov/npdes/menuofbmps/poll 16.htm, • • 6 of 6 Californla.5tormwater BMP Handbook January 2003 Industrial and Commercial www xabmpha ndbooks.com -�— I 011 N ......_......�-.._.�..._.._., X .,_ ..�. ,.._, -- I + + + + + + + + ++ + + + 6" PERFORATED PIPE ++ + + + + + + - + + + ++ + r7 IT+ + ++ + + + + + + + + BMP2 + + + . + + + + + + Q PROPERTY LINE 63.47 62.97 + + + +I INFILTRATION TRENCH + + ++ + ++ + I TG 13' FL WATER SURFA E PER pLOAPN OPENINGS BMP1 VOL=1 ,401 cu. ft. � � � Ro D l + + + + 6 - + ;.• ;.,..:.:. •.. . •. , ' 21 FILTER•.•�••, �.. �~ MODIFIED CURB + + BIORETENTION BAST + + + + + + + 4:, SLOPE •` ' ` & GUTTER + + + + + + + (TYP.) :; .t ;..; ' :, DROP •' " + J71� o — + DMA 2 + INLET • `' .LAYER • + + + VOL-4,035 CU. ft. O N • '.: . . ; �, • - : .. 3 GRAVEL PAD AT � � VISQUEEN MOISTURE I + + 0.68 a c. OWN POT I + � BARRIER MIN. 10 MIL + � A ON + •" ^ �• -r,:-- CURB OPENINGS + ILL + THICK PER LAYER-2 + + + W + + Vbmp=1 ,382cu. fL. ao LAYERS THICK (TYP. " " . . . + + I + + R0 F IN BOTH SIDES) 9 THICK 3 THICK PEA + I + + D PUT + 60.00 GRAVEL LAYER GRAVEL LAYER IE C ON + + 12 PVC NOTES: STORM DRAIN --� 1. FOR FILTER LAYER INSTALL ENGINEERED SOIL MEDIA TO CONSIST OF 85% MINERAL ++ + ++ + f 0 COMPONENT AND 15% ,ORGANIC COMPONENT BY VOLUME DRUM MIXED PRIOR TO + I + + + �— PLACEMENT. MINERAL COMPONENT SHALL BE A CLASS A SANDY LOAM TOPSOIL MEETING + I THE FOLLOWING: + + + + T I E R DMA1 _ � . L Ff� B I � + � o + / PERCENT RANGE COMPONENT + + + + + 1 .00 a c. ``� + �" 70 _ 80 SAND + + I W 15 20 SILT + Vbmp=2,069cu. ft. + 5 - 10 CLAY TRIP TICKET, OR CERTIFICATE OF COMPLIANCE, SHALL BE MADE AVAILABLE TO THE + + + I La � +I I + + + + � � _ I INPSECTOR TO PROVE THE ENGINEERED MIX MEETS THIS SPECIFICATION + + + + + + + 2. GRAVEL LAYER TO CONSIST OF 1" ROCK PER AASHTO #57 OR EQUIVALENT. RL '1Z + + IL + + IL DMA3 ++ + BIORETENo ONLEBASIN + _ + W 0.33 ac. I I+ I + + BMP• o S 3 + Vbm =455cu. ft. + + � ` + 0E NS UB OC ON + + + R� s D ( INFILTRATION TRENCH + + VO L=9 3 0 c u. ft. RO ►IIV SPO IT + + IL4" THICK LAYER OF CAIIO RIVER ROCK COBBLES + + + + + + + + + + 6" PERFORATED PVC PIPE + + + + + + + F + A E C + + + + + + + + + + + + + + + + + + (PERFORATIONS UPWARD) + + + + + + �+ -- -- + +� + + + + + + + + + + + + + ++ + +/++ + o 0 29" THICK LAYER + + + + + + + + + + + + + + + + + + + + + + + �-� + OF 1" GRAVEL + + J + + + + _ _ _ .. _v. .._. I ! VISQUEEN BARRIER N. 10 MIL THICK PER LAYER-2 4.5' LAYERS THICK (TYP. BOTH SIDES) INFILTRATION TRENCH NO SCALE I 12" PVC PIPE JOINS TO EXISTING 72" RCFC OWNED & MAINTAINED STORM DRAIN AREA SUMMARY LEGEND DMA 1 DMA 2 DIMA 3 SITE ROOFTOP 0.00 AC. 0.12 AC. 0.16 AC. 0.28 AC. CONCRETE 0.77 AC. 0.39 AC. 0.01 AC. 1.17 AC. ROOFTOP °°..,.�° �'° 1' LANDSCAPE 0.23 AC. 0.17 AC. 0.16 AC. 0.56 AC. TOTAL 1.00 AC. 0.68 AC. 0.33 AC. 2.01 AC. _. CONCRETE LANDSCAPE LD15-0866 Medofer Engineering Inc. 28610 Midsummer Lane M en ifee, CA 92584 909-816-5830/951-301-6792 fax 0 20 40 60 80 m edo feren g®verizon.n e t Underground Service AI e rt CONSTRUCTION RECORD DATE BY REVISIONS DATE ACC'D BENCH MARK SCALE SEAL: Designed By Drawn By Checked By CITY OF TEMECULA Drawing No. FESSiDEPARTMENT OF PUBLIC WORKS RIV. CO. BM T-7-21 ��o PAL A.MFD ql MAM. MAM. MAM. o Call: TOLL FREE Contractor Horizontal �<v p`2' �� y� Plans Prepared Under Supervision Of RECOMMENDED BY:- DATE:_ q ELEVATION: 117s.31 ; .WATER QUALITY MANAGEMENT PLAN 1 —8 0 0 2-1/2 BRASS DISK STAMPED AS NOTED No. 47604 s Inspector , " , EXP. 12-31-15 MICHAEL A. MEDOFER Y--% -7- 1 A NW CORNER OF ANZA vertical * * Date: ACCEPTED BY: DATE. A' :. •'.'� A%\AY.SA' �MECULA MEDICAL OFFICE BUILDING , 2 7—2 6 O O T 2 T �, THOMAS W. GARCIA 3W5 DePORTOLA PD., TEMECULA, CA 2 RD. AND DE PORTOLA RD.. 49 WEST sr c�Vl, �� i;;e : ' Date Completed OF ANZA RD. NA glfpFCA1-�E�Et R.C.E. No. 47604 Expires 12/31/15 DIRECTOR OF PUBLIC WORKS/CITY ENGINEER r' .,,� PA14-0107 Sheet 1 of 1 Jt R.C.E. N0. 48279 TWO WORKING DAYS BEFORE YOU DIG f - ,