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WQMP with Attachments Copy
Project Specific Water Quality Management Plan A Template for Projects located within the Santa Ana Watershed Region of Riverside County Project Title:Circle K,Central Avenue, Lake Elsinore,CA Development No:TBD Design Review/Case No: Pending ��,.��G���,,. ,... ��I b�SAN JpCINTO � l� � r��•""' {{ � !wr - - I .� t r Contact Information: Prepared for: Circle K ® Preliminary Prepared by: ❑ Final Kurt Saxon, PE Saxon Engineering Original Date Prepared:July 2014 2605 Temple Heights Drive,Suite A Oceanside,CA 92056 Revision Date(s): Ph (949)366-2180 x123 Fx(800)653-4193 Prepared for Compliance with Regional Board Order No. R8-2010-0033. s 4;4NO 4,4180 . ' ;® 4� @ ' `" �. F A Brief Introduction This Project-Specific WQMP Template for the Santa Ana Region has been prepared to help guide you in documenting compliance for your project. Because this document has been designed to specifically document compliance, you will need to utilize the WQMP Guidance Document as your"how-to" manual to help guide you through this process. Both the Template and Guidance Document go hand-in-hand, and will help facilitate a well prepared Project-Specific WQMP. 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 Optimize Site Delineate Drainage Information Utilization Management Areas (DMAs) Section F Section E Section D Hydromodification Alternative Implement LID Compliance BMPs Section G Section H Section I Source Control Construction Plan Operation, BMPs Checklist Maintenance, and Funding -2 - OWNER'S CERTIFICATION This Project-Specific Water Quality Management Plan (WQMP) has been prepared for Mike Sater of Burger Builders, LLC by Saxon Engineering for the Steak N'Shake,Valley Springs Parkway project. This WQMP is intended to comply with the requirements of Riverside county for Ordinance #754 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 BIVIPs 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 County of Riverside Water Quality Ordinance(Municipal Code Section754). "I, the undersigned, certify under penalty of law that the provisions of this WQMP have been reviewed and accepted and that the WQMP will be transferred to future successors in interest." Owner's Signature Date Owner's Printed Name Owner's Title/Position PREARER'S CERTIFICATION "The selection, sizing and design of stormwater treatment and other stormwater quality and quantity control measures in this plan meet the requirements of Regional Water Quality Control Board Order No. R8-2010-0033 and any subsequent amendments thereto." 7719114 Preparer's Signature Date vwv k , . _ e% Preparer's Printed Name Preparer's Title/Position Preparer's Licensure: - 3 - 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 Additional Permits/Approvals required for the Project: ....................................................................7 Section B: Optimize Site Utilization (LID Principles) .....................................................................................8 Section C: Delineate Drainage Management Areas (DMAs).........................................................................9 SectionD: Implement LID BMPs.................................................................................................................10 D.1 Infiltration Applicability....................................................................................................................10 D.2 Harvest and Use Assessment............................................................................................................11 D.3 Bioretention and Biotreatment Assessment....................................................................................13 D.4 Feasibility Assessment Summaries...................................................................................................14 D.5 LID BMP Sizing..................................................................................................................................15 Section E:Alternative Compliance (LID Waiver Program)..........................................................................17 E.1 Identify Pollutants of Concern ..........................................................................................................18 E.2 Stormwater Credits...........................................................................................................................19 E.3 Sizing Criteria.....................................................................................................................................19 E.4 Treatment Control BMP Selection....................................................................................................20 SectionF: Hydromodification .....................................................................................................................21 F.1 Hydrologic Conditions of Concern (HCOC)Analysis..........................................................................21 SectionG: Source Control BMPs.................................................................................................................22 Section H: Construction Plan Checklist.......................................................................................................24 Section I: Operation, Maintenance and Funding........................................................................................25 -4- List of Tables Table A.1 Identification of Receiving Waters................................................................................................7 Table A.2 Other Applicable Permits..............................................................................................................7 Table C.1 DMA Classifications.......................................................................................................................9 Table C.2 Type 'A', Self-Treating Areas.........................................................................................................9 Table C.3 Type 'B', Self-Retaining Areas ........................................................ Error! Bookmark not defined. Table C.4 Type 'C', Areas that Drain to Self-Retaining Areas......................... Error! Bookmark not defined. Table C.5 Type 'D', Areas Draining to BMPs .................................................................................................9 Table D.1 Infiltration Feasibility..................................................................................................................10 Table D.2 LID Prioritization Summary Matrix .............................................................................................14 Table D.3 DCV Calculations for LID BMPs...................................................................................................15 Table E.1 Potential Pollutants by Land Use Type........................................................................................18 Table E.2 Water Quality Credits..................................................................... Error! Bookmark not defined. Table E.3 Treatment Control BMP Sizing....................................................................................................19 Table E.4 Treatment Control BMP Selection ..............................................................................................20 Table F.1 Hydrologic Conditions of Concern Summary ................................. Error! Bookmark not defined. Table G.1 Permanent and Operational Source Control Measures.............................................................22 Table H.1 Construction Plan Cross-reference.............................................................................................24 List of Appendices Appendix1: Maps and Site Plans................................................................................................................26 Appendix 2: Construction Plans..................................................................................................................27 Appendix3: Soils Information.....................................................................................................................28 Appendix 4: Historical Site Conditions........................................................................................................29 Appendix 5: LID Infeasibility........................................................................................................................30 Appendix6: BMP Design Details.................................................................................................................31 Appendix7: Hydromodification..................................................................................................................32 Appendix8: Source Control ........................................................................................................................33 Appendix9: O&M .......................................................................................................................................34 Appendix 10: Educational Materials.........................................................................................................- 6- - 5 - Section A: Project and Site Information PROJECT INFORMATION Type of Project: Commercial Development(Gas Station Remodel) Planning Area: Valley Springs Parkway Community Name: Valley Springs Parkway Development Name: Circle K PROJECT LOCATION Latitude& Longitude(DMS): 33.4134,-117.2009 Project Watershed and Sub-Watershed:Santa Ana River,Tesquesquite Arroyo, Moreno APN(s): pending Map Book and Page No.: Use GPS coordinates PROJECT CHARACTERISTICS Proposed or Potential Land Use(s) Commercial/Gas Station Proposed or Potential SIC Codes) 447110 Area of Project Footprint(SF) 23,069 SF Total Area of proposed Impervious Surfaces within the Project Limits(SF)/or Replacement 18,222 SF 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 EXISTING SITE CHARACTERISTICS Total area of existing Impervious Surfaces within the project limits(SF) 23,328 Is the project located within any MSHCP Criteria Cell? ❑Y ® N If so, identify the Cell number: NA 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 NRCS soils type(s) present on the site(A, B, C and/or D) C What is the Water Quality Design Storm Depth for the project? 0.65 inches as per Exhibit A: Isohyetal Map for the 85t" Percentile 24-hour Storm Event A.1 Maps and Site Plans When completing your Project-Specific WQMP, include a map of the local 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 0 Source Control BMPs • Proposed Structural BMPs o Buildings, Roof Lines, Downspouts • Drainage Path Impervious Surfaces • Drainage Infrastructure, Inlets, Overflows o Standard Labeling -6- 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 Co-Permittee 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. Table A.1 Identification of Receiving Waters Receiving Waters EPA Approved 303(d) List Designated Proximity to RARE Impairments Beneficial Uses Beneficial Use Water body is not listed in Unnamed stream/river 2948410 None Attachment B-3 Water body is not listed in Attachment B-3 HUC12: 180702030601 Santa Ana RWQCB Basin Plan Santa Ana RWQCB Basin Plan Beneficial Uses Beneficial Uses A.3 Additional Permits/Approvals required for the Project: Table A.2 Other 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(CWA)Section 401 Water Quality Cert. ❑Y ® N US Army Corps of Engineers, CWA 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) ❑Y ❑ N If yes is answered to any of the questions above, the Co-Permittee may require proof of approval/coverage from those agencies as applicable including documentation of any associated requirements that may affect this Project-Specific WQMP. -7- Section 6: 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 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 LID design and explain your design decisions to others. The 2010 Santa Ana 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? Yes, site is being graded to drain prior to proposed site improvements. Did you identify and protect existing vegetation? If so, how? If not,why? Yes, portion of site is not being developed and maintains existing landscape. Did you identify and preserve natural infiltration capacity? If so, how? If not,why? A soil report, generated using USDA soil data, indicates an infiltration rate of.2-0.57 inches per hour. Selection will be based on infiltration and HCOC mitigation. No geotechnical/infiltration testing was done for this site. Did you identify and minimize impervious area? If so, how? If not,why? Site is designed with 5924 ft2 of pervious landscaping area, these are distributed to disconnect impervious surfaces wherever possible. The proposed remolded area of site is 0.67 acres with 80% impervious surfaces. Did you identify and disperse runoff to adjacent pervious areas? If so, how? If not, why? No, site is higher than adjacent streets. An underground infiltration basin is proposed. Site will utilize volume based BMPs. -8- 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 C.1 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 C.1 DMA Classifications DMA Name or ID Surface Type(s)1 Area(Sq.Ft.) DMA Type A-1 Natural (C Soil) 344 A A-2 Natural (C Soil) 203 A A-3 Natural (C Soil) 232 A A-4 Natural (C Soil) 233 A A-5 Natural (C Soil) 4663 A A-6 Natural (C Soil) 301 A A-7 Natural (C Soil) 40 A A-8 Natural (C Soil) 80 A A-9 Natural (C Soil) 20 A D-1 Concrete or Asphalt 13472 D D-2 Concrete or Asphalt 5277 D D-3 Roofs 4320 D 1Reference Table 2-1 in the WQMP Guidance Document to populate this column Table C.2 Type W,Self-Treating Areas DMA Name or ID Area(Sq. Ft.) Stabilization Type Irrigation Type(if any) A-1 344 Curbed landscaping TBD A-2 203 Curbed landscaping TBD A-3 232 Curbed landscaping TBD A-4 233 Curbed landscaping TBD A-5 4663 Curbed landscaping TBD A-6 301 Curbed landscaping TBD A-7 40 Curbed landscaping TBD A-8 80 Curbed landscaping TBD A-9 20 Curbed landscaping TBD Table C.3 Type V,Areas Draining to BMPs DMA Name or ID BMP Name or ID D-1, D-2 Underground Infiltration D-3 Underground Infiltration Note: More than one drainage management area can drain to a single LID BMP, however, one drainage management area may not drain to more than one BMP. - 9 - Section D: Implement LID BMPs D.1 Infiltration Applicability Is there an approved downstream 'Highest and Best Use' for stormwater runoff (see discussion in Chapter 2.4.4 of the WQMP Guidance Document for further details)? ❑ Y ❑N Section 2.4.4 does not give criteria for 'Highest and Best Use.' Nor does it provide a reference to make determinations of'Highest and Best Use.'Question remains unanswered. Without additional information the preparers of this report propose that biotreatment and infiltration BMPs be used for stormwater management. 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 Co-Permittee, 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 D.1 below is meant to provide a simple means of assessing which DMAs on your site support Infiltration BMPs and is discussed in the WQMP Guidance Document in Chapter 2.4.5. Check the appropriate box for each question and then list affected DMAs as applicable. If additional space is needed, add a row below the corresponding answer. Table D.1 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 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:All 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: ...geotechnical report identify other site-specific factors that would preclude effective and safe infiltration? x Describe here: Estimated infiltration rate of 0.2-0.57inches per hour throughout entire project area. 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. - 10- D.2 Harvest and Use Assessment Please check what applies: ❑ 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 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 Design Capture Volume 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 harvesting stormwater 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: 0.147 Type of Landscaping (Conservation Design or Active Turf): Conservation Design 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:0.336 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 2-3 in Chapter 2 to determine the minimum area of Effective Irrigated Area per Tributary Impervious Area (EIATIA). Enter your EIATIA factor: 1.05 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: 0.353 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).Not feasible Minimum required irrigated area (Step 4) Available Irrigated Landscape (Step 1) 0.353 0.147 - 11 - 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: 115 Project Type: Commercial 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 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:0.336 Step 3: Enter the Design Storm depth for the project site (see Exhibit A) into the left column of Table 2-1 in Chapter 2 to determine the minimum number or toilet users per tributary impervious acre (TUTIA). Enter your TUTIA factor: 141 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:47.42 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). Feasible Minimum required Toilet Users(Step 4) Projected number of toilet users(Step 1) 47.42 per day 115 per day 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. N/A - 12 - D.3 Bioretention and Biotreatment Assessment Other LID Bioretention and Biotreatment BMPs as described in Chapter 2.4.7 of the WQMP Guidance Document are feasible on nearly all development sites with sufficient advance planning. Select one of the following: ® LID Bioretention/Biotreatment BMPs will be used for some or all DMAs of the project as noted below in Section D.4 (note the requirements of Section 3.4.2 in the WQMP Guidance Document). ❑ 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 to discuss this option. Proceed to Section E to document your alternative compliance measures. - 13 - D.4 Feasibility Assessment Summaries From the Infiltration, Harvest and Use, Bioretention and Biotreatment Sections above, complete Table D.2 below to summarize which LID BMPs are technically feasible, and which are not, based upon the established hierarchy. Table D.2 LID Prioritization Summary Matrix LID BMP Hierarchy No LID DMA (Alternative Name/ID 1. Infiltration 2. Harvest and use 3. Bioretention 4. Biotreatment Compliance) D-1 ® ❑ ❑ ® ❑ D-2 ® ❑ ❑ ® ❑ D-3 ® ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Runoff from D-1 and D-2 will be directed towards an underground infiltration system. Runoff from the roof of the building, D-3,will be directed to the underground infiltration system. - 14- D.5 LID BMP Sizing Each LID BMP must be designed to ensure that the Design Capture Volume 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 VBMP using a method approved by the Copermittee. Utilize the worksheets found in the LID BMP Design Handbook or consult with your Copermittee to assist you in correctly sizing your LID BMPs. Complete Table D.3 below to document the Design Capture Volume 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 D.3 DCV Calculations for LID BMPs DMA Post- DMA Area Project Effective DMA Areas x DMA (square Surface Impervious Runoff Runoff Enter BMP Name/Identifier Here Type/ID feet) Type Fraction,If Factor Factor [A] [B] [C] [A]x [C] D-1 13,472 Concrete 1.00 0.89 11,990 or Asphalt D-2 5277 Concrete 1.00 0.89 4696 or Asphalt D-3 4320 Concrete 100 0.89 3844 I or Asphalt Proposed Design Volume Storm Design Capture on Plans Depth Volume, VBMP (cubic (in) (cubic feet) feet) 10121 20,530 0.65 1,112 1,800 cf [B],[C]is obtained as described in Section 2.3.1 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 - 15 - DMA Post- DMA Area Project Effective DMA Areas x DMA (square Surface Impervious Runoff Runoff Enter BMP Name/Identifier Here Type/ID feet) Type Fraction,If Factor Factor [A] [B] [C] [A]x [C] Proposed Design Volume Storm Design Capture on Plans Depth Volume, VBMP (cubic (in) (cubic feet) feet) [B],[C]is obtained as described in Section 2.3.1 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 - 16- Section E: Alternative Compliance (LID Waiver Program) LID BMPs are expected to be feasible on virtually all projects. Where LID BMPs have been demonstrated to be infeasible as documented in Section D, other Treatment Control BMPs must be used (subject to LID waiver approval by the Copermittee). Check one of the following Boxes: ® LID Principles and LID 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 - El 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 Co-Permittee and included in Appendix 5. Additionally, no downstream regional and/or sub- regional LID BMPs exist or are available for use by the project. 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. - 17- E.1 Identify Pollutants of Concern Utilizing Table A.1 from Section A above which noted your project's receiving waters and their associated EPA approved 303(d) listed impairments, cross reference this information with that of your selected Priority Development Project Category in Table E.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 E.1 Potential Pollutants by Land Use Type Priority Development General Pollutant Categories Project Categories and/or Toxic Project Features (check those Bacterial Metals Nutrients Pesticides Organic Sediments Trash & Oil & that apply) Indicators Compounds Debris Grease El Detached Residential P N P P N P P P Development ❑ Attached Residential P N P P N P P P(2) Development Commercial/Industrial P(3) P PM PM P(5) PM P P Development ❑ Automotive Repair N P N N P(4,5) N P P Shops ® (>5,000 ft Restaurants Z)ts P N N N N N P P Hillside Development P N P P N P P P (>5,000 ft ) ® Parking Lots P(6) P PM PM P(4) PM P P (>5,000 ft 2) ® 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 (3)A potential Pollutant is land use involving animal waste (4)Specifically petroleum hydrocarbons (5)Specifically solvents (6)Bacterial indicators are routinely detected in pavement runoff - 18- E.2 Stormwater Credits Projects that cannot implement LID BMPs but nevertheless implement smart growth principles are potentially eligible for Stormwater Credits. Utilize Table 3-8 within the WQMP Guidance Document to identify your Project Category and its associated Water Quality Credit. If not applicable, write N/A. N/A E.3 Sizing Criteria After you appropriately considered Stormwater Credits for your project, utilize Table E.3 below to appropriately size them to the DCV, or Design Flow Rate, as applicable. Please reference Chapter 3.5.2 of the WQMP Guidance Document for further information. Table E.2 Treatment Control BMP Sizing DMA Post- DMA Area Project Effective DMA Area x DMA (square Surface Impervious Runoff Runoff Enter BMP Name/Identifier Here Type/ID feet) Type Fraction,If Factor Factor [A] [B] [C] [A]x[C] D-1 13,472 Concrete 1.00 0.89 11,990 or Asphalt D-2 5277 Concrete 1.00 0.89 4696 or Asphalt D-3 4320 Concrete 1.00 0.89 3844 Minimum Proposed or Design Volume Asphalt Capture Total Storm or Flow Design Volume or Water on Plans Storm Design Flow Credit (cubic Depth Rate (cubic Reduction feet or (in) feet or cfs) cfs) AT 23,069 20,530 0.65 0.1 0.1 [I] E[A] [B],[C]is obtained as described in Section 2.3.1 from the WQMP Guidance Document [E]is obtained from Exhibit A in the WQMP Guidance Document [G]is for Flow-Based Treatment Control BMPs[G]=43,560,for Volume-Based Control Treatment BMPs,[G]=12 [H]is from the Total Credit Percentage as Calculated from Table E.2 above [1]as obtained from a design procedure sheet from the BMP manufacturer and should be included in Appendix 6 - 19- EA 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. Removal Efficiencies are given according to Appendix E BMP Pollutant Removal Effectiveness, of LID BMP Design Handbook. Table E.3 Treatment Control BMP Selection Selected Treatment Control BMP Priority Pollutant(s) of Removal Efficiency Name or ID1 Concern to Mitigate Percentage Infiltration Bacterial Indicators >80% Infiltration Trash & Debris >80% Infiltration Oil & Grease >80% Bioretention/Biotreatment Bacterial Indicators >80% Bioretention/Biotreatment Trash & Debris >80% Bioretention/Biotreatment Oil &Grease >80% 1 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 qualifying pollutant removal efficiency. Z Cross Reference Table E.1 above to populate this column. 3 As documented in a Co-Permittee Approved Study and provided in Appendix 6. - 20- Section F: Hydromodification F.1 Hydrologic Conditions of Concern (HCOC)Analysis Once you have determined that the LID design is adequate to address water quality requirements, you will need to assess if the proposed LID Design may still create a HCOC. Review Chapters 2 and 3 (including Figure 3-7) of the WQMP Guidance Document to determine if your project must mitigate for Hydromodification impacts. If your project meets one of the following criteria which will be indicated by the check boxes below, you do not need to address Hydromodification at this time. However, if the project does not qualify for Exemptions 1, 2 or 3, then additional measures must be added to the design to comply with HCOC criteria.This is discussed in further detail below in Section F.2. HCOC EXEMPTION 1:The Priority Development Project disturbs less than one acre.The Copermittee has the discretion to require a Project-Specific WQMP to address HCOCs on projects less than one acre on a case by case basis. The disturbed area calculation should include all disturbances associated with larger common plans of development. Does the project qualify for this HCOC Exemption? ® Y ❑ N If Yes, HCOC criteria do not apply. - 21 - 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 MEP standard typically requires both types of BMPs. In general, Operational BMPs cannot be substituted for a feasible and effective permanent BMP. Using the Pollutant Sources/Source Control Checklist in Appendix 8, review the following procedure to specify Source Control BMPs for your site: Table GA Permanent and Operational Source Control Measures Potential Sources of Runoff Permanent Structural Source Operational Source Control BMPs pollutants Control BMPs On-site storm drain inlets Mark all inlets with words "Only Maintain and periodically repaint Rain Down the Storm Drain" or or replace inlet markings similar. Provide stormwater pollution prevention information to new site owners, lessees, or operators. Include following n 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 strorm drains." Interior floor drains Interior floor drains will be Drains will be inspected and plumbed to sanitary sewer. maintained to prevent blockages and overflow. Indoor&structural pest control All entrances to the building will Integrated Pest Management be screened to discourage entry information will be provided to of any pests. the owners, lessees, and operators. Landscape/Outdoor Pesticide Existing native trees, shrubs, and Maintain landscaping using Use ground cover will be preserved minimum or no pesticides. to the maximum extent possible. Integrated Pest Management Pest-resistant plant species will information will be provided to be considered. the owners, lessees, and Plants will be selected based operators. upon site soils, slopes, climate, sun, wind, rain, land use, air movement, ecological consistency, and plant interactions. - 22 - Food Service Floor mats, containers, and Owners will be given a copy of equipment will be cleaned "The Food Service Industry Best indoors in a floor sink in the Management Practices for: dishwashing area of the kitchen. Restaurants, Grocery stores, Drain from kitchen will be Delicatessens, and Bakeries." connected to a grease interceptor before discharging to the sanitary sewer. Dishwashing area will be sized to accommodate the largest piece of equipment that needs periodic cleaning. Refuse Areas Trash receptacles will be Receptacles for the site will be in covered, graded, and paved to adequate number to prevent run-on and bermed to accommodate all refuse prevent runoff from the refuse generated by the business area. between collection dates. Any drains will be connected to a Receptacles will be covered. grease removal device before Signs deterring dumping of discharge to sanitary sewer. hazardous waste will be posted. Refuse will be handled according Litter will be picked up daily and to the municipal requirements of spill control materials will be the City of Riverside. available on-site. Signs will be posted on dumpsters with the words "Do not dump hazardous materials here" or similar. Fire Sprinkler Test Water Fire Sprinkler test water will be drained to the sanitary sewer. Miscellaneous Drain or Wash See Stormwater Pollutant Water or Other Sources Sources/Source control Checklist in Appendix 8 for permanent • Boiler drain lines, controls for these sources. condensate drain lines, rooftop equipment, drainage sumps, roofing, gutters, and trim Parking Lot Parking areas will be swept regularly to prevent accumulation of litter and debris. The following were not considered potential sources of stormwater pollution since these features will not be included on the property: interior parking garages, pools/spas/decorative fountains/other water features, industrial processes, outdoor storage of equipment or materials, vehicle and equipment cleaning,vehicle/equipment repair and maintenance,fuel dispensing areas, and loading docks. - 23 - Section H: Construction Plan Checklist Populate Table H.1 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 H.1 Construction Plan Cross-reference BMP No.or ID BMP Identifier and Description Corresponding Plan Sheet(s) UIB#1 Underground Infiltration Basin Upon Approval of Preliminary Underground WQMP Infiltration 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. Co-Permittee staff can advise you regarding the process required to propose changes to the approved Project-Specific WQMP. - 24- Section I: Operation, Maintenance and Funding The Copermittee will periodically verify that Stormwater BMPs on your site are maintained and continue to operate as designed. To make this possible, your Copermittee will require that you include in Appendix 9 of this Project-Specific WQMP: 1. A means to finance and implement facility maintenance 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. 5. A separate list and location of self-retaining areas or areas addressed by LID Principles that do not require specialized O&M or inspections but will require typical landscape maintenance as noted in Chapter 5, pages 85-86, in the WQMP Guidance. Include a brief description of typical landscape maintenance for these areas. Your local Co-Permittee will also require that you prepare and submit a detailed Stormwater BMP Operation and Maintenance Plan that sets forth a maintenance schedule for each of the Stormwater 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 Stormwater BMP Operation and Maintenance Plan are in Chapter 5 of the WQMP Guidance Document. Maintenance Mechanism: Annual Inspection Will the proposed BMPs be maintained by a Home Owners' Association (HOA) or Property Owners Association (POA)? ❑ 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. - 25 - Appendix 1: Maps and Site Plans Location Map, WQMP Site Plan and Receiving Waters Map - 26- Vicinity . • f��7jj�• l � �,: ��I Ce,ntral'Ave�+Dexter Ave,Lake Elsinore,CA 92�32;�USA �• .� � Y � 4 ;OJf � n gyp, Y T ci AA r 1 p� �1 � :G 2014 Gaogle �, r fj. 011 jP 1994 �"'r '�'�' � • 33°41'32�32'Nil l7'2n n0 n7 1�c -.-.1 f[ - alt Project Location: 3304 • 1 1 : 1 • ft CONS-rRUCTION IVOTES O7 CONSTRUCT X'AC PAWNG OVER X'CAM II AB OVER IWII'11 V1M��� T 95%COMPACTED SUBGRADE "1,- t d -_-_-_\_____ \ J-_,�- �� -ram 7?L JT el[T,TO•JS -q�5-� .� \I':. --\ J - I OpTYSOFULAKE EL9NORE+SID.DWG.ND GUTTER 0200.� a / p� 1 '... -- -- �� ►�' cO�� ' �� JO'�e , / 6 O3 CONSTRUCT 6'CURB'TYPE Be PER CITY OF LAKE EISINORE STD.DNC.N0.202 o ��O 1 y \ ) \ J `�r�� 1 �r�i� _ )' ••I IX J� B O4 INSTALL ACCESSIBLE PARKING SIGN PER DETAIL ON SHEET G7. �'b� L•PREU: ' sv o (PROTE s I OS PAINT HANDICAP EMBLEM AND STRIPING PER DETAIL '46 mr al 130.01 TC \ �I s a - I '1` ON SHEET C7. + j 'br �o'b� .fi'f,'e•- "'o z - (0 s� 5.831< ;y. ,,rr��,, ©PAINT 4'LITY WARE TRAFFIC BEARING STRIPE(BLUE AT \ 1301.13 1 - @� 41W °130 0 TO�° .281G 30 75 1.28z -I ACCESSIBILITY STALLS)(2 COATS MIN.) / I I IN 1 00. 1 ¢ .E, ONINatld �;•b: ° r r 1303. 1C 1 0 IN 1 3 6 \ ' !{�� \ l 01; `b. g o� 7 INSTALL TRUNCATED DOMES PER DETAIL ON SHELF 4. __ / `�°-� O8 CONSTRUCT 4'THICK CONCRETE SIDEWALK. / r_ - -, 3 o IYP. a� a r) ;06, A Jo` r s �cn EX.DQ k+ I 1 �I O T .,��flf�ff ,,�. � � ���.0 1 �,� .'f2 O9 CONSTRUCT 12"WIDE*STEP-OFF'CONCRETE PER DETAIL W-34.9 t °L137 9 \ 4 i7EL ur �� p ?r 1 2 1 JOIN IX. + ON SHEET 4. / * S 0. 0/ 1 93 TC .I 1 10 CONSTRUCT ADA CURB RAMP PER DETAIL ON SHEET G7. T 252X o. P II 3 G ) ! FS 3 <° 11 CONSTRUCT TRASH ENCLOSURE PER ARCHITECTS PLAN. 1 12 CONSTRUCT 7'P.C.C.OVER 4"A.B.(CLASS II). i /1 0h93 8 -L71G' •`� . I�-��8 C9 6 ��.R 2 � q ~ ..... - - A ,� 3 �Y � 13 INSTALL 24'z24'PRECAST CONCRETE CATCH BASIN liV_^ 1302.59 TC (BROOKS 12424 OR APPROVED).WITH STEEL TRAFFIC GRATE `p ,.5 - •• '� �c 2. 1301.90 02 SEE SHEET G7. b` 6 1 I SZ INSTALL 12-PVC(SDR32)STORM DRAIN UNE. e INSTALL /i���'d' -- '0"/02 �,v j / /i�j�����- /// =-5 J• a - ' 3 r'° 1301.67 FS 15 • NE PRO-SERIES CHANNEL DRAIN CAST IRON TRAM I IX.CURB C CHANNEL RATE(ND5O5). (PROTECT) ,6 CONSTRUCT 36"WIDE VALLEY GUTTER PER DETAIL ON SHEET G7. 17 INSTALL JENSFN PRECAST OIL-WATER SEPARATOR PER DETAIL ON SHEET 06. 6*4 FOG*, y A, / .1 r, J / - �!i,7q,,� � 18 INSTALL 8'BALL VALVE IN VALVE CAN. 1 99.48 Cr f�_ �i, ,� , 05 �,�••'� a'C'.oa'V � 1 1.3fi 4ST1G w ROUGH GRADE RAMP AREA TO ACCOMMODATE NEW RAMP. DISPOSE OF SPOIL MATERIALS W X r S c 3 ! G6.S a ®CONSTRUCT ADA ACCESS RAMP PER DETAIL ON SHEET k T/ ��T �, 3 1 �''fb /� �/�/f"�� /�� �� /yes 2, o ,v -• J vi �o a� .� _ -•� ' .L, j j 4 // /,. T ? %•..' \ OCONSTRUCT CONCRETE RAMP WALL PER DETAIL ON SHEET G6. I ff ff �2$� O° /� (� ®CONSTRUCT VARIABLE HEIGHT CURB PER DETAIL ON SHEET G6. �•°s, C1 3 . 4' *D T/ i/ �`�e• c' s ' 'poi/ !{° EE q [ "' �� b 6� q, @INSTALL UNDERGROUND STORAGE/INFILTRATION CHAMBERS EX.STREET Tr RB UGHT a T 3 L��' s / I TX CURB _JI �r `y \ \ / R�C ��� �',ii i /�/i �� , •{�� ^'fb,\ c�,' 1 .8 �!�J t GUTTER/"I �- = ' Ate-JOIN �70:PA�INC 'o-EX. /l'� ' / °- _21°.'- `L (PROTECT) I { F (PROTECT) (PROTECT) \r S -- v Fo I W EX SIDEWALK�PRo(PROTECT) $„°> Q%o \ - - -+� - �: i � 1 ! II � \ ���. -�,.� J � '�:, I^� \ \ CURVE TABLE ' q2y �e P,o 6\ �'fb 4,.'T� \ \' 2y f�� �JO �'O.n _ 4''Fb� •3y `(�'�0� CURVE�° \ ,� ` '• � rr -. ` -I � ,' J,\ $ �.� \ i LENGTH RADIUS DELTA TANGENT C7 7.36 2.50 188'41'13" 25.24 C2 6.08 30.00 011'36'47" 3.05 �� - .g �1300.5 k`s 7 .CURB s EX: _ r t IX RB FOR ADDITIONAL SITE DIMENSION SEE fr�B- _ _ _ _ `I (Izsss) J Gu e - �G» \ ARCHITECTS PLANS. VERIFY ALL DIMENSIONS 3,.oB 20.00 o6sro2'oY ,ss7 Mil 111 _ l 4" , ° \ ., - _ �PrO,\✓�" _ �__(1298.5). _ °�',, 0299)_ a -°' <�I �'299 s \I C4 6.28 2.00 180'00'Oo"SHOWN HEREON WITH ARCHITECTS PLANS. (A{•�,, Sa -='^--- - - - o= - - -_- s-' - ''•-4''o - - - 'si - \ C5 6.12 1.95 180'00'00' �- - '(PR C6 4.68 3.00 089'28'OB" 2.97 ql✓�/ I c�.`�s 543'1100"1y EX CURB \ 9'r 190.00' s�• Qr B'10" 2.99 OTE� ,��.,° _ \ �` \ 9m ? +r Y CONSTRUCTION OF OFFSITE IMPROVEMENTS C7 4.70 3.00 089'4 SHALL INCLUDE ALL REQUIRED GRADING AND EARTHWORK NEEDED TO PREPARE THE cB 4.76 3.00 o90•50'44' 3.04 SUBGRADE FOR NEW IMPROVEMENTS. C9 4.71 3.00 O90ro0'00' 3.00 ADDITIONALLY AN EXPORT/DISPOSAL OF SPOIL // ��'%�I 9-��!r,•s \ \ \ J�\ �\ MATERIAL SHALL BE INCLUDED. c,o 22.45 15.00 O85'45'10' 13.93 JJ ' 01. /tip Y °T�' I, \� A L L, A N V\ E ET \� 1•- b'�� G„ 29.89 40.00 042.46'34- 15.68 60`VI(DE-PAVED PUBLIC-RIGHT-0Ri CONTRACTOR SHALL PROVIDE THE REQUIRED P- �@� - CONSTRUCTION OF THE FACILITATE NEEDED TO IMPROVEMENTS. POTENTIAL All ��o N BMPs INCLUDE BUT NOT LIMITED TO SE-6, SE-7, SE-10, NS-3, NS-12, NS-13, WM-1, WM-5 AND WM-8. �I I G a L-E R T NO1T� �� Mi w\ 1 OVER GAVMVA I IMF CONTRACTOR To VERIFY PAD ELEVAT10N SHOWN WITH UNA f'IVEIM MHWR7�AM VWD THE CONTRACTOR SHALL NOT DISTURB EXISTING PROJECT SOILS REPORT AND STRUCTURAL ENGINEERS GRAPHIC SCALE DIAL TOLL FREE OVER EXCAVATE 5 FEET OUTSIDE BUILDING ENVELOPE PER SURVEY MONUMENTS OR BENCH MARKS NOTED ON THE PLANS. CAUTION: THE ENGINEER PREPARING THESE PLANS WILL NOT BE RESPONSIBLE 1-800-227-2600 SOILS REPORT RECOMMENDATIONS PLANS, OR FOUND DURING CONSTRUCTION. REMOVAL FOR, OR LIABLE FOR, UNAUTHORIZED CHANGES TO OR USES OF AND REPLACEMENT SHALL BE AT CONTRACTOR'S GRADE ALL PLANTERS TO RETAIN STORM WATER THAT THESE PLANS. ALL CHANGES TO THE PLANS MUST BE IN WRITING AT LEAST TWO DAYS OVER EXCAVATE PARKING AREA PER SOILS REPORT EXPENSE AND SHALL BE DONE BY A REGISTERED FALLS IN PLANTER. smKonengneung AND MUST BE APPROVED BY THE PREPARER OF THESE PLANS. BEFORE YOU DIG RECOMMENDATIONS. ENGINEER WITH AN R.C.E. NUMBER BELOW 33,966, OR SAXON ENGINEERING SERVICES, INC (IN Fm) RGROIIND SERVILE ALERT OF SOUTHERN CALMPIM A UCENSED LAND SURVEYOR ONLY. CONTRACTOR SHALL ADJUST GREASE INTERCEPTOR 11 TEMPLE"EICJR5 D1.SURE A OCEAN8IDE•CA 92056 1 1no6-10 PL MANHOLES TO GRADES TEL 9193M2180 FAX 8M656A199 MARK REVISIONS APPR. DATE THESE FLANS HAVE BEEN RENEWED FOR COMPLIANCE WITH THE APPROPRIATE PREPARED BY: QRpFESS ICI CONDITIONS OF DEVELOPMENT AND/OR Ott AND STATE TAWS AND HAVE BEEN FOUND r°o RZ V.S4 < CITY OF LM EISINORE SHEET C��J e ACCEPTABLE o ram, 7 NO. 44180 z �a ap.a/so/15 SCALE: BENCH MARK: GRADM CIE ENE OF SHEETS 1'=10' �Y'1LARi �1..1Y\ ATI pTYE ANDA�RI,RCE No.XX700C DATE KURT M.SAXON RCE:44180 DATE DTP CIVIL ?' SEE SHEET G1 CIRCLE-K SPORE FILE No. CITY EN LAKE ELSINORE oc CALIF DATE: 29300 CENTRAL AVENUE, W.O. 1448-015 06-27-14 LAKE ELSINORE. CA 92532 CONSTRUCTION NOTES \ \ \ \ CONSTRUCT C AC PAYING OVER C CLASS II AB OVER \ \ \ O 95%COMPACTED SUBGRADE \ \ C E, N T R A t A V E N` U E \\ o CONSTRUCT CURB AND GUTTER"TYPE 6'PER \ \ \ \ CITY OF LAKE ELSINORE STD.DWG.NO.200. \ _ N, \ O CONSTRUCT 6'CURB"TYPE 6A'PER CITY OF` � LAKE ELSINORE STD.DWG.N0.202 INSTALL ACCESSIBLE PARKING SIGN PER DETAIL ON SHEET G7. OON PAINT�EET G7CAP EMBLEM AND STRIPING PER DETAIL s 4 \ \ \ �c s s $.' •� \ \ e - q4? \\ T Jo \ \ O PAINT a WIDE WHITE TRAFFIC BEARING STRIPE(BLUE AT IX SDEWALK ACCE54BIUTY STALLS)(2 COATS MIN.) PROTECT) \ IX CURB ( \ \ (PROTECT) INSTALL TRUNCATED DOMES PER DETAIL ON SHEET 4. CONSTRUCT 4'THICK CONCRETE SDEWALK. arb,� �.,y. �`'°——�- —e- �" — {I -�`'J� O ON SHEET 4IY WIDE'STEP-OFF'CONCRETE PER DETAIL 4o Ji's / ? N43'1o222"Etas ,A;b r CONSTRUCT ADA CURB RAMP PER DETAIL ON SHEET G7. '��& . A� /99'e I L s •� �c`T!.� '{'a / 'ba JOa I, { 's �i'� 11 CONSTRUCT TRASH ENCLOSURE PER ARCHITECTS PLAN. I A •i<c'{�aa I � ',� �, '��a <� �!,� I 12 CONSTRUCT 7-P.GG OVER 4'A.B.(CLASS IQ. I'a •.y0 o / _ — -�z_ — 13 INSTALL 24'x24'PRECAST CONCRETE CATCH BASIN ' s �,2 _ fir_ — _ .. — __ P '�:s ,� I (BROOKS 12424 OR APPROVED).WITH STEEL TRAFFIC CRATE r SEE SHEET G7. ———————— gam ?JJ�f' INSTALL 1Y PVC(SDR32)STORM DRAIN UNE �, s ZTVs a �+ I' `rr�? l{ 0?� �� I 15 INSTALL 12'WIDE PRD-SERIES CHANNEL DRAIN(NDS1840) �� �O l PARcr•1. . P No-zvrn- ?� I� F WITH CAST IRON HEAVY TRAFFIC CHANNEL GRATE(NDS/B46� ? .y �� _i00K 162 P4GES 04—: W s `baa,° 16 CONSTRUCT 36'WIDE VALLEY GUTTER PER DETAIL ON SHEET G7. q��, , CIRCI= }c sT oarrs lb; AP9 377-030-015/ / I n INSTALL JENSEN PRECAST OIL-WATER SEPARATOR PER DETAIL -� — — — — — — — — — — —/ ON SHEET G6. INSTALL B"BALL VALVE IN VALVE CAN. Q 1 rP 19 ROUGH GRADE RAMP AREA TO ACCOMMODATE NEW RAMP. IX AC PAYING / � � I� I O DISPOSE OF SPOIL uATEPoALs. (PROTECT) 'Go �� J / Q\ N 20 CONSTRUCT ADA ACCESS RAMP PER DETAIL ON SHEET G6. CONSTRUCT CONCRETE RAMP WALL PER DETAIL ON SHEET G6. �• W o III II ( / O CONSTRUCT VARIABLE HEIGHT CURB PER DETAIL ON SHEET G6. rs a �/� I/ � �/ O INSTALL UNDERGROUND STORAGE/INFlLTRARON CHA11BQt5. / �/ 15 6 NV r�> sae fI y 0 II( I I q JOIN EX� ,s�a'�• .4?�` ..JOII EX. Q 'n 4 _ I II i C��'Fb @II �b r¢sa � • r5b�6 - � r�� <� � ,� �.�,6 e, `ba tb i _ �I � II �b - .- - .fie �'-qy`4,�,�,,3 •. Y Y� n'��' � r �EK CURB _ (PROTECT) EX SIDEWALK _ (PROTECT) I I 1 ��.• r �T �� �• 12 ss.9 �'�� � — `��. �� °,� e' �b�. �1 FOR ADDITIONAL SITE DIMENSION SEE / a - 'b = c, 'b - ',�,` aJi: 'AQr EX AC PAYING ARCHITECTS PLANS. VERIFY ALL DIMENSIONS JOIN'EX �' s I� (PROTECT) SHOWN HEREON WITH ARCHITECTS PLANS. e�. CON F OFFSITE I SHALL INCLUDE ALL REQUIRED GRAD LI D O IMPROVEMENTS NG ND L 60' s=o.o20 '. 14 rT�a �4 ��� t3o zs 15 1 s �y�� I- 0 \ e EARTHWORK NEEDED TO PREPARE THE > ADE FOR NEW IMPROVEMENTS. IX TIER I + — — t PVC — — I �w: II I ,� I � ADDITIONALLY N EXPORT/DISPOSAL OF SPOIL I (k GUTTER s=0.20 I ,4 w, I I I e (PROTECT) I 7.119 \ tz o ca. , � �. I"-�s,� 75 7.I MATERIAL SHALL BE INCLUDED. I \I O \ J \ 9I I I 9 g 3 _�JON IX h 1 ` _a ;. I s e I \ I / \ I DTEXL F5 O r/ U I +ohs I \ I \ 1 \ \ir / \ I •56 �. J.2D.DL0 CAw, F._ s/�L 1 6.03 \ r �A I'JO IX N . ' in / H CONTRACTOR SHALL PROVIDE THE REQUIRED 'a / �. '� 1 '•T�. tra I\ •. _'.I•- CONSTRUCTION BMPs AS NEEDED TO FACILITATE l 3 CONSTRUCTION OF THE IMPROVEMENTS. POTENTIAL MATCFLM SM SHEET 04 BMPs INCLUDE BUT NOT LIMITED TO SE-6, SE-7, SE-10, NS-3, NS-12, NS-13, WM-1, WM-5 AND WM—B. DIG A L-E R T NOl Ex �� GRAPHIC SCALE Mi w\ EXCAVATION CONTRACTOR TO VERIFY PAD ELEVATION SHOWN WITH UNAV 1 rR./EIM C YVR1 W AM USM �y�� THE CONTRACTOR SHALL NOT DISTURB EXISTING PROJECT SOILS REPORT AND STRUCTURAL ENGINEERS 9 DIAL TOLL FREE OVER EXCAVATE 5 FEET OUTSIDE BUILDING ENVELOPE PER SURVEY MONUMENTS OR BENCH MARKS NOTED ON THE PLANS. CAUTION: THE ENGINEER PREPARING THESE PLANS WILL NOT BE RESPONSIBLE 1-800-227-2600 SOILS REPORT RECOMMENDATIONS PLANS, OR FOUND DURING CONSTRUCTION. REMOVAL FOR, OR LIABLE FOR, UNAUTHORIZED CHANGES TO OR USES OF AND REPLACEMENT SHALL BE AT CONTRACTOR'S GRADE ALL PLANTERS TO RETAIN STORM WATER THAT THESE PLANS. ALL CHANGES TO THE PLANS MUST BE IN WRITING AT LEAST TWO DAYS OVER EXCAVATE PARKING AREA PER SOILS REPORT EXPENSE AND SHALL BE DONE BY A REGISTERED FALLS IN PLANTER. sawnengneuM AND MUST BE APPROVED BY THE PREPARER OF THESE PLANS. I]N YlUa2 I 1 imh 10 tL BEFORE YOU DIG RECOMMENDATIONS. ENGINEER WITH AN R.C.E. NUMBER BELOW 33,966, OR SAXON ENGINEERING SERVICES, INC RGRGARD SERVICE ALERT OF SOUTHERN CALMRM A LICENSED LAND SURVEYOR ONLY. CONTRACTOR SHALL ADJUST GREASE INTERCEPTOR Y8p5 TEMPLE HEKiH150RNE,&UREA OCEANSIOE,CA 92058 MANHOLES TO GRADES TEL 9993W2180 FAX 800858A198 MARK REVISIONS APPR. DATE THESE PLANS HAVE BEEN RENEWED FOR COMPLIANCE WITH THE APPROPRIATE PREPARED BY: QRpFEss Ro CONDITIONS OF DEVELOPMENT AND/OR CITY AND STATE LAWS AND HAVE EIE77N FOUND �o Rt M.S4 C CITY OF LM ELSINORE SHEET C�Fo e ACCEPTABLE 0 NO. 44180 ram, OF �a ap.A/m/15 z SCALE BENCH MARK: /4tpADM pE ENE SHEETS ATI E ENGINEER ADARI,RCE No.XXXXX DATE KURT M.SAXON RCE:44180 DATE DTP CIVIL SEE SHEET GI CIRCLE-K SPORE FILE No.CITY CITY OF LAID_ELSINORE oI'CALRF DATE: 29300 CENTRAL AVENUE, W.O. 1448-Ot5 06-27-14 LAKE ELSINORE, CA 92532 Waterbody Quality Assessment Report I WATERS I US EPA Page 1 of 2 http' epa.gov/watersl0/attains_waterbody.control? p. I = 013500020081204163614&p_report_type=T&p_cycle=2010 Last updated on 7/8/2014 A Q/0 2 Watershed Assessment, Tracking & Environmental �►// a ReSrU[t& EPA Home Water WATERS Water Quality Assessment and TMDL Information Waterbody Quality Assessment Report l vpot Return to home Features page 2010 Waterbody Report for About This Database On This Page Temescal Creek, Reach 6 (Integrated Report) • Causes of Assessing Water Quality Im airment (Elsinore Groundwater Sub Questions and Answers) • TMDLs That Basin Boundary To Lake ElsinoXggrated Reporting Apply to This Outlet) Guidance Waterbody Previous National Water • Previous Quality Reports Causes of Alberhill • EnviroM%pper for Water Impairment Now uQK-iHTON ALBEl' � • AskWATERS Attaining All 14EPA WATERS Homepage Uses • Exchange Network w • Assessment Database State: California Terra Cotta • Statewide Statistical Waterbody ID: qJ Surveys CAR80135000200812 orth ilsiliore • How's My Waterway Local Location: Null h� pr Search tool State Waterbody ,�° ,ate �� Type: River �h k0S Pollution Categories EPA Waterbody LAGUNA � 4e �`a� Summary-Document y HEIGHTS Type: Rivers and Lcai Nitrogen and Phosphorus Streams 2 km Lake isinore Pollution Data Access Tool Water Size: 5.4 u ec, 4NPDA"C,}ii,, Ir— l.a�cc�Isinoce Swtc `kEs Units: miles lmt MARINA ReapauonPar6 V Watershed Name: c, VILLAGE Click on the waterbody for an interactive map Causes of Impairment for Reporting Year 2010 Description of this table Cause of Im airment Caus f Im irm n Grou TMDL Dev I Indicator Bacteria Patho ens TMDL needed TMDLs That Apply to this waterbody No TMDL data have been recorded by EPA for this waterbody. http://o-fmpub.epa.gov/watersl 0/attains_waterbody-control?p_l ist_id=CAR80135000200812... 7/8/2014 Waterbody Quality Assessment Report I WATERS I US EPA Page 2 of 2 Previous Causes of Impairments Now Attaining All Uses No causes of impairment are recorded as attaining all uses for this waterbody. http://ofmpub.epa.gov/watersl0/attains waterbody.control?p_list_id=CAR80135000200812... 7/8/2014 Appendix 2: Construction Plans Grading and Drainage Plans - 27- CONS-rRUCTION IVOTES O7 CONSTRUCT X'AC PAWNG OVER X'CAM II AB OVER IWII'11 V1M��� T 95%COMPACTED SUBGRADE "1,- t d -_-_-_\_____ \ J-_,�- �� -ram 7?L JT el[T,TO•JS -q�5-� .� \I':. --\ J - I OpTYSOFULAKE EL9NORE+SID.DWG.ND GUTTER 0200.� a / p� 1 '... -- -- �� ►�' cO�� ' �� JO'�e , / 6 O3 CONSTRUCT 6'CURB'TYPE Be PER CITY OF LAKE EISINORE STD.DNC.N0.202 o ��O 1 y \ ) \ J `�r�� 1 �r�i� _ )' ••I IX J� B O4 INSTALL ACCESSIBLE PARKING SIGN PER DETAIL ON SHEET G7. �'b� L•PREU: ' sv o (PROTE s I OS PAINT HANDICAP EMBLEM AND STRIPING PER DETAIL '46 mr al 130.01 TC \ �I s a - I '1` ON SHEET C7. + j 'br �o'b� .fi'f,'e•- "'o z - (0 s� 5.831< ;y. ,,rr��,, ©PAINT 4'LITY WARE TRAFFIC BEARING STRIPE(BLUE AT \ 1301.13 1 - @� 41W °130 0 TO�° .281G 30 75 1.28z -I ACCESSIBILITY STALLS)(2 COATS MIN.) / I I IN 1 00. 1 ¢ .E, ONINatld �;•b: ° r r 1303. 1C 1 0 IN 1 3 6 \ ' !{�� \ l 01; `b. g o� 7 INSTALL TRUNCATED DOMES PER DETAIL ON SHELF 4. __ / `�°-� O8 CONSTRUCT 4'THICK CONCRETE SIDEWALK. / r_ - -, 3 o IYP. a� a r) ;06, A Jo` r s �cn EX.DQ k+ I 1 �I O T .,��flf�ff ,,�. � � ���.0 1 �,� .'f2 O9 CONSTRUCT 12"WIDE*STEP-OFF'CONCRETE PER DETAIL W-34.9 t °L137 9 \ 4 i7EL ur �� p ?r 1 2 1 JOIN IX. + ON SHEET 4. / * S 0. 0/ 1 93 TC .I 1 10 CONSTRUCT ADA CURB RAMP PER DETAIL ON SHEET G7. T 252X o. P II 3 G ) ! FS 3 <° 11 CONSTRUCT TRASH ENCLOSURE PER ARCHITECTS PLAN. 1 12 CONSTRUCT 7'P.C.C.OVER 4"A.B.(CLASS II). i /1 0h93 8 -L71G' •`� . I�-��8 C9 6 ��.R 2 � q ~ ..... - - A ,� 3 �Y � 13 INSTALL 24'z24'PRECAST CONCRETE CATCH BASIN liV_^ 1302.59 TC (BROOKS 12424 OR APPROVED).WITH STEEL TRAFFIC GRATE `p ,.5 - •• '� �c 2. 1301.90 02 SEE SHEET G7. b` 6 1 I SZ INSTALL 12-PVC(SDR32)STORM DRAIN UNE. e INSTALL /i���'d' -- '0"/02 �,v j / /i�j�����- /// =-5 J• a - ' 3 r'° 1301.67 FS 15 • NE PRO-SERIES CHANNEL DRAIN CAST IRON TRAM I IX.CURB C CHANNEL RATE(ND5O5). (PROTECT) ,6 CONSTRUCT 36"WIDE VALLEY GUTTER PER DETAIL ON SHEET G7. 17 INSTALL JENSFN PRECAST OIL-WATER SEPARATOR PER DETAIL ON SHEET 06. 6*4 FOG*, y A, / .1 r, J / - �!i,7q,,� � 18 INSTALL 8'BALL VALVE IN VALVE CAN. 1 99.48 Cr f�_ �i, ,� , 05 �,�••'� a'C'.oa'V � 1 1.3fi 4ST1G w ROUGH GRADE RAMP AREA TO ACCOMMODATE NEW RAMP. DISPOSE OF SPOIL MATERIALS W X r S c 3 ! G6.S a ®CONSTRUCT ADA ACCESS RAMP PER DETAIL ON SHEET k T/ ��T �, 3 1 �''fb /� �/�/f"�� /�� �� /yes 2, o ,v -• J vi �o a� .� _ -•� ' .L, j j 4 // /,. T ? %•..' \ OCONSTRUCT CONCRETE RAMP WALL PER DETAIL ON SHEET G6. I ff ff �2$� O° /� (� ®CONSTRUCT VARIABLE HEIGHT CURB PER DETAIL ON SHEET G6. �•°s, C1 3 . 4' *D T/ i/ �`�e• c' s ' 'poi/ !{° EE q [ "' �� b 6� q, @INSTALL UNDERGROUND STORAGE/INFILTRATION CHAMBERS EX.STREET Tr RB UGHT a T 3 L��' s / I TX CURB _JI �r `y \ \ / R�C ��� �',ii i /�/i �� , •{�� ^'fb,\ c�,' 1 .8 �!�J t GUTTER/"I �- = ' Ate-JOIN �70:PA�INC 'o-EX. /l'� ' / °- _21°.'- `L (PROTECT) I { F (PROTECT) (PROTECT) \r S -- v Fo I W EX SIDEWALK�PRo(PROTECT) $„°> Q%o \ - - -+� - �: i � 1 ! II � \ ���. -�,.� J � '�:, I^� \ \ CURVE TABLE ' q2y �e P,o 6\ �'fb 4,.'T� \ \' 2y f�� �JO �'O.n _ 4''Fb� •3y `(�'�0� CURVE�° \ ,� ` '• � rr -. ` -I � ,' J,\ $ �.� \ i LENGTH RADIUS DELTA TANGENT C7 7.36 2.50 188'41'13" 25.24 C2 6.08 30.00 011'36'47" 3.05 �� - .g �1300.5 k`s 7 .CURB s EX: _ r t IX RB FOR ADDITIONAL SITE DIMENSION SEE fr�B- _ _ _ _ `I (Izsss) J Gu e - �G» \ ARCHITECTS PLANS. VERIFY ALL DIMENSIONS 3,.oB 20.00 o6sro2'oY ,ss7 Mil 111 _ l 4" , ° \ ., - _ �PrO,\✓�" _ �__(1298.5). _ °�',, 0299)_ a -°' <�I �'299 s \I C4 6.28 2.00 180'00'Oo"SHOWN HEREON WITH ARCHITECTS PLANS. (A{•�,, Sa -='^--- - - - o= - - -_- s-' - ''•-4''o - - - 'si - \ C5 6.12 1.95 180'00'00' �- - '(PR C6 4.68 3.00 089'28'OB" 2.97 ql✓�/ I c�.`�s 543'1100"1y EX CURB \ 9'r 190.00' s�• Qr B'10" 2.99 OTE� ,��.,° _ \ �` \ 9m ? +r Y CONSTRUCTION OF OFFSITE IMPROVEMENTS C7 4.70 3.00 089'4 SHALL INCLUDE ALL REQUIRED GRADING AND EARTHWORK NEEDED TO PREPARE THE cB 4.76 3.00 o90•50'44' 3.04 SUBGRADE FOR NEW IMPROVEMENTS. C9 4.71 3.00 O90ro0'00' 3.00 ADDITIONALLY AN EXPORT/DISPOSAL OF SPOIL // ��'%�I 9-��!r,•s \ \ \ J�\ �\ MATERIAL SHALL BE INCLUDED. c,o 22.45 15.00 O85'45'10' 13.93 JJ ' 01. /tip Y °T�' I, \� A L L, A N V\ E ET \� 1•- b'�� G„ 29.89 40.00 042.46'34- 15.68 60`VI(DE-PAVED PUBLIC-RIGHT-0Ri CONTRACTOR SHALL PROVIDE THE REQUIRED P- �@� - CONSTRUCTION OF THE FACILITATE NEEDED TO IMPROVEMENTS. POTENTIAL All ��o N BMPs INCLUDE BUT NOT LIMITED TO SE-6, SE-7, SE-10, NS-3, NS-12, NS-13, WM-1, WM-5 AND WM-8. �I I G a L-E R T NO1T� �� Mi w\ 1 OVER GAVMVA I IMF CONTRACTOR To VERIFY PAD ELEVAT10N SHOWN WITH UNA f'IVEIM MHWR7�AM VWD THE CONTRACTOR SHALL NOT DISTURB EXISTING PROJECT SOILS REPORT AND STRUCTURAL ENGINEERS GRAPHIC SCALE DIAL TOLL FREE OVER EXCAVATE 5 FEET OUTSIDE BUILDING ENVELOPE PER SURVEY MONUMENTS OR BENCH MARKS NOTED ON THE PLANS. CAUTION: THE ENGINEER PREPARING THESE PLANS WILL NOT BE RESPONSIBLE 1-800-227-2600 SOILS REPORT RECOMMENDATIONS PLANS, OR FOUND DURING CONSTRUCTION. REMOVAL FOR, OR LIABLE FOR, UNAUTHORIZED CHANGES TO OR USES OF AND REPLACEMENT SHALL BE AT CONTRACTOR'S GRADE ALL PLANTERS TO RETAIN STORM WATER THAT THESE PLANS. ALL CHANGES TO THE PLANS MUST BE IN WRITING AT LEAST TWO DAYS OVER EXCAVATE PARKING AREA PER SOILS REPORT EXPENSE AND SHALL BE DONE BY A REGISTERED FALLS IN PLANTER. smKonengneung AND MUST BE APPROVED BY THE PREPARER OF THESE PLANS. BEFORE YOU DIG RECOMMENDATIONS. ENGINEER WITH AN R.C.E. NUMBER BELOW 33,966, OR SAXON ENGINEERING SERVICES, INC (IN Fm) RGROIIND SERVILE ALERT OF SOUTHERN CALMPIM A UCENSED LAND SURVEYOR ONLY. CONTRACTOR SHALL ADJUST GREASE INTERCEPTOR 11 TEMPLE"EICJR5 D1.SURE A OCEAN8IDE•CA 92056 1 1no6-10 PL MANHOLES TO GRADES TEL 9193M2180 FAX 8M656A199 MARK REVISIONS APPR. DATE THESE FLANS HAVE BEEN RENEWED FOR COMPLIANCE WITH THE APPROPRIATE PREPARED BY: QRpFESS ICI CONDITIONS OF DEVELOPMENT AND/OR Ott AND STATE TAWS AND HAVE BEEN FOUND r°o RZ V.S4 < CITY OF LM EISINORE SHEET C��J e ACCEPTABLE o ram, 7 NO. 44180 z �a ap.a/so/15 SCALE: BENCH MARK: GRADM CIE ENE OF SHEETS 1'=10' �Y'1LARi �1..1Y\ ATI pTYE ANDA�RI,RCE No.XX700C DATE KURT M.SAXON RCE:44180 DATE DTP CIVIL ?' SEE SHEET G1 CIRCLE-K SPORE FILE No. CITY EN LAKE ELSINORE oc CALIF DATE: 29300 CENTRAL AVENUE, W.O. 1448-015 06-27-14 LAKE ELSINORE. CA 92532 CONSTRUCTION NOTES \ \ \ \ CONSTRUCT C AC PAYING OVER C CLASS II AB OVER \ \ \ O 95%COMPACTED SUBGRADE \ \ C E, N T R A t A V E N` U E \\ o CONSTRUCT CURB AND GUTTER"TYPE 6'PER \ \ \ \ CITY OF LAKE ELSINORE STD.DWG.NO.200. \ _ N, \ O CONSTRUCT 6'CURB"TYPE 6A'PER CITY OF` � LAKE ELSINORE STD.DWG.N0.202 INSTALL ACCESSIBLE PARKING SIGN PER DETAIL ON SHEET G7. OON PAINT�EET G7CAP EMBLEM AND STRIPING PER DETAIL s 4 \ \ \ �c s s $.' •� \ \ e - q4? \\ T Jo \ \ O PAINT a WIDE WHITE TRAFFIC BEARING STRIPE(BLUE AT IX SDEWALK ACCE54BIUTY STALLS)(2 COATS MIN.) PROTECT) \ IX CURB ( \ \ (PROTECT) INSTALL TRUNCATED DOMES PER DETAIL ON SHEET 4. CONSTRUCT 4'THICK CONCRETE SDEWALK. arb,� �.,y. �`'°——�- —e- �" — {I -�`'J� O ON SHEET 4IY WIDE'STEP-OFF'CONCRETE PER DETAIL 4o Ji's / ? N43'1o222"Etas ,A;b r CONSTRUCT ADA CURB RAMP PER DETAIL ON SHEET G7. '��& . A� /99'e I L s •� �c`T!.� '{'a / 'ba JOa I, { 's �i'� 11 CONSTRUCT TRASH ENCLOSURE PER ARCHITECTS PLAN. I A •i<c'{�aa I � ',� �, '��a <� �!,� I 12 CONSTRUCT 7-P.GG OVER 4'A.B.(CLASS IQ. I'a •.y0 o / _ — -�z_ — 13 INSTALL 24'x24'PRECAST CONCRETE CATCH BASIN ' s �,2 _ fir_ — _ .. — __ P '�:s ,� I (BROOKS 12424 OR APPROVED).WITH STEEL TRAFFIC CRATE r SEE SHEET G7. ———————— gam ?JJ�f' INSTALL 1Y PVC(SDR32)STORM DRAIN UNE �, s ZTVs a �+ I' `rr�? l{ 0?� �� I 15 INSTALL 12'WIDE PRD-SERIES CHANNEL DRAIN(NDS1840) �� �O l PARcr•1. . P No-zvrn- ?� I� F WITH CAST IRON HEAVY TRAFFIC CHANNEL GRATE(NDS/B46� ? .y �� _i00K 162 P4GES 04—: W s `baa,° 16 CONSTRUCT 36'WIDE VALLEY GUTTER PER DETAIL ON SHEET G7. q��, , CIRCI= }c sT oarrs lb; AP9 377-030-015/ / I n INSTALL JENSEN PRECAST OIL-WATER SEPARATOR PER DETAIL -� — — — — — — — — — — —/ ON SHEET G6. INSTALL B"BALL VALVE IN VALVE CAN. Q 1 rP 19 ROUGH GRADE RAMP AREA TO ACCOMMODATE NEW RAMP. IX AC PAYING / � � I� I O DISPOSE OF SPOIL uATEPoALs. (PROTECT) 'Go �� J / Q\ N 20 CONSTRUCT ADA ACCESS RAMP PER DETAIL ON SHEET G6. CONSTRUCT CONCRETE RAMP WALL PER DETAIL ON SHEET G6. �• W o III II ( / O CONSTRUCT VARIABLE HEIGHT CURB PER DETAIL ON SHEET G6. rs a �/� I/ � �/ O INSTALL UNDERGROUND STORAGE/INFlLTRARON CHA11BQt5. / �/ 15 6 NV r�> sae fI y 0 II( I I q JOIN EX� ,s�a'�• .4?�` ..JOII EX. Q 'n 4 _ I II i C��'Fb @II �b r¢sa � • r5b�6 - � r�� <� � ,� �.�,6 e, `ba tb i _ �I � II �b - .- - .fie �'-qy`4,�,�,,3 •. Y Y� n'��' � r �EK CURB _ (PROTECT) EX SIDEWALK _ (PROTECT) I I 1 ��.• r �T �� �• 12 ss.9 �'�� � — `��. �� °,� e' �b�. �1 FOR ADDITIONAL SITE DIMENSION SEE / a - 'b = c, 'b - ',�,` aJi: 'AQr EX AC PAYING ARCHITECTS PLANS. VERIFY ALL DIMENSIONS JOIN'EX �' s I� (PROTECT) SHOWN HEREON WITH ARCHITECTS PLANS. e�. CON F OFFSITE I SHALL INCLUDE ALL REQUIRED GRAD LI D O IMPROVEMENTS NG ND L 60' s=o.o20 '. 14 rT�a �4 ��� t3o zs 15 1 s �y�� I- 0 \ e EARTHWORK NEEDED TO PREPARE THE > ADE FOR NEW IMPROVEMENTS. IX TIER I + — — t PVC — — I �w: II I ,� I � ADDITIONALLY N EXPORT/DISPOSAL OF SPOIL I (k GUTTER s=0.20 I ,4 w, I I I e (PROTECT) I 7.119 \ tz o ca. , � �. I"-�s,� 75 7.I MATERIAL SHALL BE INCLUDED. I \I O \ J \ 9I I I 9 g 3 _�JON IX h 1 ` _a ;. I s e I \ I / \ I DTEXL F5 O r/ U I +ohs I \ I \ 1 \ \ir / \ I •56 �. J.2D.DL0 CAw, F._ s/�L 1 6.03 \ r �A I'JO IX N . ' in / H CONTRACTOR SHALL PROVIDE THE REQUIRED 'a / �. '� 1 '•T�. tra I\ •. _'.I•- CONSTRUCTION BMPs AS NEEDED TO FACILITATE l 3 CONSTRUCTION OF THE IMPROVEMENTS. POTENTIAL MATCFLM SM SHEET 04 BMPs INCLUDE BUT NOT LIMITED TO SE-6, SE-7, SE-10, NS-3, NS-12, NS-13, WM-1, WM-5 AND WM—B. DIG A L-E R T NOl Ex �� GRAPHIC SCALE Mi w\ EXCAVATION CONTRACTOR TO VERIFY PAD ELEVATION SHOWN WITH UNAV 1 rR./EIM C YVR1 W AM USM �y�� THE CONTRACTOR SHALL NOT DISTURB EXISTING PROJECT SOILS REPORT AND STRUCTURAL ENGINEERS 9 DIAL TOLL FREE OVER EXCAVATE 5 FEET OUTSIDE BUILDING ENVELOPE PER SURVEY MONUMENTS OR BENCH MARKS NOTED ON THE PLANS. CAUTION: THE ENGINEER PREPARING THESE PLANS WILL NOT BE RESPONSIBLE 1-800-227-2600 SOILS REPORT RECOMMENDATIONS PLANS, OR FOUND DURING CONSTRUCTION. REMOVAL FOR, OR LIABLE FOR, UNAUTHORIZED CHANGES TO OR USES OF AND REPLACEMENT SHALL BE AT CONTRACTOR'S GRADE ALL PLANTERS TO RETAIN STORM WATER THAT THESE PLANS. ALL CHANGES TO THE PLANS MUST BE IN WRITING AT LEAST TWO DAYS OVER EXCAVATE PARKING AREA PER SOILS REPORT EXPENSE AND SHALL BE DONE BY A REGISTERED FALLS IN PLANTER. sawnengneuM AND MUST BE APPROVED BY THE PREPARER OF THESE PLANS. I]N YlUa2 I 1 imh 10 tL BEFORE YOU DIG RECOMMENDATIONS. ENGINEER WITH AN R.C.E. NUMBER BELOW 33,966, OR SAXON ENGINEERING SERVICES, INC RGRGARD SERVICE ALERT OF SOUTHERN CALMRM A LICENSED LAND SURVEYOR ONLY. CONTRACTOR SHALL ADJUST GREASE INTERCEPTOR Y8p5 TEMPLE HEKiH150RNE,&UREA OCEANSIOE,CA 92058 MANHOLES TO GRADES TEL 9993W2180 FAX 800858A198 MARK REVISIONS APPR. DATE THESE PLANS HAVE BEEN RENEWED FOR COMPLIANCE WITH THE APPROPRIATE PREPARED BY: QRpFEss Ro CONDITIONS OF DEVELOPMENT AND/OR CITY AND STATE LAWS AND HAVE EIE77N FOUND �o Rt M.S4 C CITY OF LM ELSINORE SHEET C�Fo e ACCEPTABLE 0 NO. 44180 ram, OF �a ap.A/m/15 z SCALE BENCH MARK: /4tpADM pE ENE SHEETS ATI E ENGINEER ADARI,RCE No.XXXXX DATE KURT M.SAXON RCE:44180 DATE DTP CIVIL SEE SHEET GI CIRCLE-K SPORE FILE No.CITY CITY OF LAID_ELSINORE oI'CALRF DATE: 29300 CENTRAL AVENUE, W.O. 1448-Ot5 06-27-14 LAKE ELSINORE, CA 92532 Appendix 3: Soils Information Geotechnical Study and Other Infiltration Testing Data - 28- USDA United States A product of the National Custom Soil Resource Department of Cooperative Soil Survey, Agriculture a joint effort of the United Report for r States Department of N ��, Federal age and other Western Riverside � '-"" Federal agencies, State Natural agencies including the Resources Agricultural Experiment Area, California Conservation Stations, and local Service participants ol --------------- �#- -• � � I �J S f�V July 7, 2014 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers,foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers.Also, conservationists,teachers, students, and specialists in recreation,waste disposal, and pollution control can use the surveys to help them understand,protect,or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions.The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses.The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning,onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://www.nres.usda.gov/wps/portal/ nres/main/soils/health/)and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center(http:// offices.sc.egov.usda.gov/locator/app?agency=nres)or your NRCS State Soil Scientist(http://www.nres.usda.gov/wps/portal/nres/detail/soils/contactus/? cid=nres142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads.Clayey or wet soils are poorly suited to use as septic tank absorption fields.A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies.The Natural Resources Conservation Service(NRCS)has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey,the site for official soil survey information. The U.S.Department of Agriculture(USDA)prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status,familial status, parental status, religion, sexual orientation,genetic information, political beliefs,reprisal,or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.)Persons with disabilities who require alternative means 2 for communication of program information(Braille, large print, audiotape,etc.)should contact USDA's TARGET Center at(202)720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W.,Washington, D.C. 20250-9410 or call (800)795-3272 (voice)or(202)720-6382 (TDD). USDA is an equal opportunity provider and employer. 3 Contents Preface....................................................................................................................2 How Soil Surveys Are Made..................................................................................5 SoilMap..................................................................................................................7 SoilMap................................................................................................................8 Legend..................................................................................................................9 MapUnit Legend........................................................................................:.......10 MapUnit Descriptions........................................................................................10 Western Riverside Area, California.................................................................12 AIC—Arbuckle gravelly loam, 2 to 8 percent slopes...................................12 AID—Arbuckle gravelly loam, 8 to 15 percent slopes.................................13 GdC—Garretson gravelly very fine sandy loam,2 to 8 percent slopes.......14 References............................................................................................................16 4 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area.They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses.Soil scientists observed the steepness, length, and shape of the slopes;the general pattern of drainage;the kinds of crops and native plants;and the kinds of bedrock.They observed and described many soil profiles.A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently,soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate,water resources, soils, biological resources, and land uses (USDA,2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform.By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform,a soil scientist develops a concept,or model,of how they were formed.Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however,soil scientists must determine the boundaries between the soils.They can observe only a limited number of soil profiles. Nevertheless,these observations, supplemented by an understanding of the soil-vegetation-landscape relationship,are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied.They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots,reaction, and other features that enable them to identify soils.After describing the soils in the survey area and determining their properties,the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits.The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy,the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil scientists classified and named the soils in the survey area,they compared the 5 Custom Soil Resource Report individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components;the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions.Some components may be highly contrasting to the other components of the map unit.The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units,complexity of the landscape,and experience of the soil scientist. Observations are made to test and refine the soil- landscape model and predictions and to verify the classification of the soils at specific locations.Once the soil-landscape model is refined,a significantly smaller number of measurements of individual soil properties are made and recorded.These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand,silt,clay,salt,and other components.Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components.The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests.Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses.Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and identified each as a specific map unit.Aerial photographs show trees,buildings,fields, roads,and rivers, all of which help in locating boundaries accurately. 6 Soil Map The soil map section includes the soil map for the defined area of interest,a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 7 Z Z r M tM•f n 06b8ZLE OTWZLE QEEBZL£ 05Z8ZL£ 01TBZL£ 0609ZLE OTOSZLE rd296T.LIT _-1 - :�. 3 � ... .- _ M.ZS bT o411 J► 1 An 40 r 00 rr 4.7 aj Go eD U Y •• (' ri � �1'- N u, 5 o o L r,+.EZAz�LTT �� -s--• - I � •�• �i �` � I . .. � "f`'•' 1 m_��,,,/:I 06b9ZLE olwzz£ OE£BZLE OSZ8ZLE OLTSZL£ 0608ZLE OT08ZL£ 61 v - M Custom Soil Resource Report MAP LEGEND MAP INFORMATION Area of Interest(AOI) g Spoil Area The soil surveys that comprise your AOI were mapped at 1:15,800. Area of Interest(AOI) Stony Spot Solis Very Stony Spot Warning:Soil Map may not be valid at this scale. __J Soil Map Unit Polygons tJ Wet Spot Enlargement of maps beyond the scale of mapping can cause A"o Soil Map Unit Lines Other misunderstanding of the detail of mapping and accuracy of soil line 0 Soil Map Unit Points placement.The maps do not show the small areas of contrasting Special Line Features soils that could have been shown at a more detailed scale. Special Point Features Uo Blowout Water Features Streams and Canals Please rely on the bar scale on each map sheet for map Borrow Pit Transportation measurements. X Clay Spot ti-t Rails Source of Map: Natural Resources Conservation Service j Closed Depression 0-b.0 Interstate Highways Web Soil Survey URL: httpd/websoilsurvey.nres.usda.gov X Gravel Pit US Routes Coordinate System: Web Mercator(EPSG:3857) Gravelly Spot Major Roads Maps from the Web Soil Survey are based on the Web Mercator Landfill Local Roads projection,which preserves direction and shape but distorts distance and area.A projection that preserves area,such as the Lava Flow Background Albers equal-area conic projection,should be used if more accurate Marsh or swamps Aerial Photography calculations of distance or area are required. Mine or Quarry This product is generated from the USDA-NRCS certified data as of Miscellaneous Water the version date(s)listed below. © Perennial Water Soil Survey Area: Western Riverside Area,California Rock Outcrop Survey Area Data: Version 6,Dec 9,2013 Saline Spot Soil map units are labeled(as space allows)for map scales 1:50,000 Sandy Spot or larger. a. Severely Eroded Spot Date(s)aerial images were photographed: May 3,2010—Jun 19, 0 Sinkhole 2010 �p Slide or Slip The orthophoto or other base map on which the soil lines were Sodic Spot compiled and digitized probably differs from the background imagery displayed on these maps.As a result,some minor shifting of Fnap unit boundefies may be evident. Custom Soil Resource Report Map Unit Legend Western Riverside Area,California(CA679) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI AIC Arbuckle gravelly loam,2 to 8 46.0 75.7% percent slopes AID Arbuckle gravelly loam,8 to 15 11.0 18.2% percent slopes GdC Garretson gravelly very fine 3.7 6.1% sandy loam,2 to 8 percent slopes Totals for Area of Interest 60.8 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area.The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits forthe properties of the soils.On the landscape, however,the soils are natural phenomena,and they have the characteristic variability of all natural phenomena.Thus,the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes.Consequently,every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components.They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management.These are called contrasting,or dissimilar,components.They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area,the contrasting minor components are identified in the map unit descriptions along with some characteristics of each.A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data.The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that 10 Custom Soil Resource Report have similar use and management requirements.The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer,all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion,and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series.The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps.The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas.Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately.The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar.Alpha- Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them.Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas.Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 11 Custom Soil Resource Report Western Riverside Area, California AIC—Arbuckle gravelly loam, 2 to 8 percent slopes Map Unit Setting Elevation: 100 to 1,600 feet Mean annual precipitation: 12 to 35 inches Mean annual air temperature: 57 to 64 degrees F Frost-free period: 200 to 280 days Map Unit Composition Arbuckle and similar soils: 85 percent Minor components: 15 percent Description of Arbuckle Setting Landform: Alluvial fans Landform position(three-dimensional): Tread Down-slope shape: Linear Across-slope shape: Linear Parent material. Alluvium derived from metasedimentary rock Typical profile H1 -0 to 26 inches: slightly acid, gravelly loam H2-26 to 45 inches: neutral, gravelly clay loam H3-45 to 68 inches: neutral, stratified very gravelly sandy loam to very gravelly sandy clay loam Properties and qualities Slope: 2 to 8 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding. None Available water storage in profile: Moderate (about 6.5 inches) Interpretive groups Farmland classification: Prime farmland if irrigated Land capability classification (irrigated): 2e Land capability classification(nonirrigated): 3e Hydrologic Soil Group: C Ecological site: LOAMY(1975)(R019XD029CA) Minor Components Perkins Percent of map unit. 5 percent Cortina Percent of map unit. 5 percent Garretson Percent of map unit: 5 percent 12 Custom Soil Resource Report AID—Arbuckle gravelly loam, 8 to 15 percent slopes Map Unit Setting Elevation: 100 to 1,600 feet Mean annual precipitation: 12 to 35 inches Mean annual air temperature: 57 to 64 degrees F Frost-free period: 200 to 280 days Map Unit Composition Arbuckle and similar soils: 85 percent Minor components: 15 percent Description of Arbuckle Setting Landform: Alluvial fans Landform position (three-dimensional): Tread Down-slope shape: Concave Across-slope shape: Linear Parent material: Alluvium derived from metasedimentary rock Typical profile H1 -0 to 26 inches: slightly acid, gravelly loam H2-26 to 45 inches: neutral, gravelly clay loam H3-45 to 68 inches: neutral, stratified very gravelly sandy loam to very gravelly sandy clay loam Properties and qualities Slope: 8 to 15 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Moderate (about 6.5 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 3e Land capability classification (nonirrigated): 3e Hydrologic Soil Group: C Ecological site: LOAMY(1975) (R019XD029CA) Minor Components Garretson Percent of map unit. 5 percent 13 Custom Soil Resource Report Perkins Percent of map unit: 5 percent Cortina Percent of map unit. 5 percent GdC—Garretson gravelly very fine sandy loam, 2 to 8 percent slopes Map Unit Setting Elevation: 50 to 3,000 feet Mean annual precipitation: 12 to 25 inches Mean annual air temperature: 61 to 64 degrees F Frost-free period: 250 to 350 days Map Unit Composition Garretson and similar soils: 85 percent Minor components: 15 percent Description of Garretson Setting Landform: Alluvial fans Landform position (three-dimensional): Tread Down-slope shape: Linear Across-slope shape: Linear Parent material: Alluvium derived from metasedimentary rock Typical profile H9 -0 to 90 inches: neutral, gravelly very fine sandy loam H2- 90 to 53 inches: neutral, gravelly loam H3-53 to 72 inches: neutral, loam Properties and qualities Slope: 2 to 8 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Capacity of the most limiting layer to transmit water(Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Available water storage in profile: Moderate (about 7.4 inches) Interpretive groups Farmland classification: Prime farmland if irrigated Land capability classification (irrigated): 2e Land capability classification (nonirrigated): 3e Hydrologic Soil Group: B Ecological site: LOAMY(1975)(R019XD029CA) 14 Custom Soil Resource Report Minor Components Cortina Percent of map unit: 5 percent Perkins Percent of map unit: 5 percent Arbuckle Percent of map unit: 5 percent 15 References American Association of State Highway and Transportation Officials(AASHTO).2004. Standard specifications for transportation materials and methods of sampling and testing.24th edition. American Society for Testing and Materials(ASTM).2005. Standard classification of soils for engineering purposes.ASTM Standard D2487-00. Cowardin, L.M.,V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OSS-79/31. Federal Register. July 13, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt,G.W.,and L.M.Vasilas,editors.Version 6.0,2006.Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://www.nres.usda.gov/wps/portal/nres/ detail/national/soils/?cid=nresl42p2_054262 Soil Survey Staff.1999.Soil taxonomy:A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook 436. http://www.nres.usda.gov/wps/portal/ nres/detail/national/soi Is/?cid=nresl 42p2_053577 Soil Survey Staff. 2010. Keys to soil taxonomy. 11th edition. U.S. Department of Agriculture,Natural Resources Conservation Service. http://www.nres.usda.gov/wps/ portal/nres/detail/national/soils/?cid=nres142p2_053580 Tiner, R.W., Jr. 1985.Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory. 1987. Corps of Engineers wetlands delineation manual.Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://www.nres.usda.gov/wps/portal/nres/detail/soils/ home/?cid=nresl 42p2_053374 United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.nres.usda.gov/wps/portal/nres/ detail/national/landuse/rangepasture/?cid=stelprdb1043084 16 Custom Soil Resource Report United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook,title 430-VI. http://www.nres.usda.gov/wps/portal/ nres/detail/soil s/scientists/?cid=nres 142p2_054242 United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States,the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://www.nres.usda.gov/wps/portal/nres/detail/national/soils/? cid=nresl42p2_053624 United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. http:// www.nrcs.usda.gov/lntemet/FSE—DOCUMENTS/nrcsl42pLO52290.pdf 17 Appendix 4: Historical Site Conditions Phase 1 Environmental Site Assessment or Other Information on Past Site Use N/A A Phase I Environmental Site Assessment was not conducted for this site. - 29 - Appendix S: LID Infeasibility LID Technical Infeasibility Analysis N/A LID principles utilized for this project -30- Appendix 6: BMP Design Details BMP Sizing, Design Details and other Supporting Documentation -31 - % Lu D F A Lu D- An > 1-1 22 SF Lli Lu PROJECT LIMITS LEGEND: f — 4 5,277 SF �7 A (6F) ,118 - --- -- ---- 1 1 -I\...'I 2y'3 SF - AC P �,' N�G (13,560 LMA - — CONCRETE (5,189 SF) GRAPHIC SCALE 30 15 30 BUILDING (4,320 SF) IN FEET TOTAL IMPERVIOUS AREA= (23,069 SF) —1 inch 30 ft. k PROPOSED SITE 41 PERVIOUS VS IMPERVIOUS A 41k ,a \ Al. 'T "EET 4,663 SF ALLAN S Fl • AREA EXHIBIT 7t. saxonengineering CIRCLF -K STORE SAXON ENGINEERING SERVICES, INC 2605 TEMPLE HEIGHTS DRIVE,SUITE A,OCEANSIDE,CA 92056 29300 CENIRAC \lLl- , TEL:949.366.2180 FAX:800.653.4193 LAKE ELSINORF, CA 92532 T y • 1 I .. 4 Vl� ♦+F � J- � ,/ t!-.fir..-\ — e .. _ \\ \ e �� Qv. LEGEND: W { � .� / y., _— Y — PERVIOUS AREA (6,379 SF) — AC PAVING (19,851 SF) \� CONCPETE (1,983 SF) BUILDING (1 ,494 SF) TOTAL IMPERVIOUS AREA= (23,328 SF) gib, � �4_ • � � J I t � � � �\ 1• q r 14, o" 30 ,l �� PROJECT 30 GRAPHIC SCALD ..� � ,<�: LIMITS ( If,, FEET 1 inch = 30 ft. I \K -• (w / 1 EXISTING SI TE PERVIOUS VS IMPERVIOUS �� � �� � - -:5y3,, , _,. � , , �• � _ AREA EXHIBIT saxonen ineerin �� �� � ��- -���> _° .` --- . \ � .�, � e� � ;,� g g ALLAN STR\'EET ��`^ �r , SAXON ENGINEERING SERVICES, INC `. '• _ ! ►�. 29300 CEN IRAL �vILl_, 2605 TEMPLE HEIGHTS DRIVE,SUITE A,OCEANSIDE,CA 92056 �` =; - — — — TEL:949.366.2180 FAX:800.653.4193 -�� ..• _ — �� — � ' — — — — EAKf_ EESI(dORE, CA 92532 Santa Ana Watershed VBMp and QBMP worksheets These worksheets are to be used to determine the required Design Capture Volume(VBMp) or the Design Flow Rate(QBMP) for BMPs in the Santa Ana Watershed To verify which watershed your project is located within, visit www.rcflood.org/npdes and use the'Locate my Watershed'tool If your project is not located in the Santa Ana Watershed, Do not use these worksheets! Instead visit www.reflood.org/npdes/develoi)ers.aspx To access worksheets applicable to your watershed Use the tabs across the bottom to access the worksheets for the Santa Ana Watershed Santa Ana Watershed -BMP Design Volume, BMP Legend..VRequired Entries (Rev.10-2011) Calculated Cells (Note this worksheet shall oniv be used in conjunction with BMP designs from the LID BMP Design Handbook) Company Name Saxon Engineering Services,Inc. Date 7/8/2014 Designed by Kurt Saxon Case No Company Project Number/Name Circle K,Central Avenue,Lake Elsinore,CA BMP Identification BMP NAME/ID Total Area Must match Name/ID used on BMP Design Calculation Sheet Design Rainfall Depth 85th Percentile,24-hour Rainfall Depth, D85= 0.65 inches from the Isohyetal Map in Handbook Appendix E Drainage Management Area Tabulation Insert additional rows if needed to accommodate all DMAs draining to the BMP Proposed Effective DMA Design Design Capture Volume on DMA DMA Area Post-Project Surface Imperivous Runoff DMA Areas x Storm Volume, VBMP Plans(cubic Type/ID (square feet) Type Fraction,If Factor Runoff Factor Depth(in) (cubic feet) feet) A-1 344 Natural(CSoil) 0.3 0.23 77.5 A-2 203 Natural(CSoil) 0.3 0.23 45.7 A-3 232 Natural(CSoil) 0.3 0.23 52.2 A-4 233 Natural(CSoil) 0.3 0.23 52.5 A-5 4663 Natural(CSoil) 0.3 0.23 1049.9 A-6 301 Natural(CSoil) 0.3 0.23 67.8 A-7 40 Natural(CSoil) 0.3 0.23 9 A-8 80 Natural(CSoil) 0.3 0.23 18 A-9 20 Natural(CSoil) 0.3 0.23 4.5 D-1 13472 Concrete or Asphalt 1 0.89 12017 D-2 5277 Concrete or Asphalt 1 0.89 4707.1 D-3 4320 Roofs 1 0.89 3853.4 29185 Total 21954.6 0.65 1189.2 CProposed Volume must be greater than the Design Capture Volume Notes: Santa Ana Watershed -BMP Design Volume, BMP Legend..VRequired Entries (Rev.10-2011) Calculated Cells (Note this worksheet shall only be used in conjunction with BMP designs from the LID BMP Design Handbook) Company Name Saxon Engineering Services,Inc. Date 7/8/2014 Designed by Kurt Saxon Case No Company Project Number/Name Circle K,Central Avenue,Lake Elsinore,CA BMP Identification BMP NAME/ID Vegetated Swale Must match Name/ID used on BMP Design Calculation Sheet Design Rainfall Depth 85th Percentile,24-hour Rainfall Depth, D85= 0.65 inches from the Isohyetal Map in Handbook Appendix E Drainage Management Area Tabulation Insert additional rows if needed to accommodate all DMAs draining to the BMP Proposed Effective DMA Design Design Capture Volume on DMA DMA Area Post-Project Surface Imperivous Runoff DMA Areas x Storm Volume, VBMP Plans(cubic Type/ID (square feet) Type Fraction,If Factor Runoff Factor Depth(in) (cubic feet) feet) D-1 13,472 Concrete or Asphalt 1 0.89 12017 D-2 5,277 Concrete or Asphalt 1 0.89 4707.1 D-3 4,320 Roofs 1 0.89 3853.4 23069 Total 20577. 00.65 1114.6 CProposed Volume must be greater than the Design Capture Volume Notes: Appendix 7: Hydromodification Supporting Detail Relating to Hydrologic Conditions of Concern N/A Project was exempt. -32 - Appendix 8: Source Control Pollutant Sources/Source Control Checklist -33 - STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST How to use this worksheet(also see Instructions in Section G of the WQMP Template): I. RC%VCW 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 WQ1iP Exhibit. 3. Review Columns 3 and 4 and incorporate all of the corresponding applicable permanent controls and operational BMPs in your WQMP.Use the format shown in Table G.1 on page 23 of this WQN111 Template.Describe your specific NMI's in an accompanying narrative,and explain any special conditions or situations that required omitting BMPs or substituting alternative BNII's for those shown here. 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 A.On-site storm drain ❑ Locations of inlets. X Mark all inlets with the words Maintain and periodically repaint or inlets "Only Rain Down the Storm replace inlet markings. Drain"or similar.Catch Basin Provide stormwater pollution Markers may be available from the prevention information at new site Riverside County Flood Control owners,lessees,or operators. and Water Conservation District, ors. call 951.955.1200 to verify. ❑ See applicable operational BMPs in Fact Sheet SC-44,"Drainage System Maintenance,"in the CASQA Stormwater Quality Handbooks at www.cabmnhand booM,com 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." AB.Interior floor drains i State that interior floor drains and Inspect and maintain drains to prevent and elevator shaft sump elevator shaft stump pumps will be blockages and overflow. pumps plumbed to sanitary sewer. ❑ C.Interior parking ❑ State that parking garage floor ❑ Inspect and maintain drains to prevent garages drains will be plumbed to the blockages and overflow. sanitary sewer. 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 D1.Need for future I Note building design features that )Q Provide Integrated Pest Management indoor&structural pest discourage entry of pests. information to owners,lessees,and control operators. D2.Landscape/ O Show locations of native trees or State that final landscape plans will X 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. Preserve existing native trees, See applicable operational BMPs in Show self-retaining landscape shrubs,and ground cover to the "What you should know areas,if any. maximum extent possible. for.....Landscape and Gardening"at O Show stormwater treatment and O Design landscaping to minimize http://rcflood.org/storm,.v2ter/souri hydrograph modification irrigation and runoff,to promote Hyperliak reference not vatld. 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 fertilizers and pesticides that can contribute to stormwater O pollution. Where landscaped areas are used to retain or detain stormwater,specify plants that are tolerant of saturated Asoil conditions. Consider using pest-resistant plants,especially adjacent to handscape. To 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 O E.Pools,spas,ponds, O Show location of water feature and If the Co-Permittee requires pools O See applicable operational BMPs in decorative fountains, a sanitary sewer cleanout in an to be plumbed to the sanitary "Guidelines for Maintaining Your 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 http://rcflood.org/stormxvater/ Department of Environmental to local requirements. Health Guidelines.) I F.Food service A For restaurants,grocery stores,and X Describe the location and features X See the brochure,"1-he Food Service other food service operations,show of the designated cleaning area. Industry Best Management Practices for. location(indoors or in a covered Describe the items[o be cleaned in Restaurants,Grocery-Stores, area outdoors)of a floor sink or Delicatessens and Bakeries"at this facility and how it has been other area for cleaning floor mats, sized to insure that the largest http://rcflood.org/storm%vater/ containers,and equipment. items can be accommodated. Provide this brochure to new site XOn the drawing,show a note that owners,lessees,and operators. this drain will be connected to a grease interceptor before discharging to the sanitary sewer. 1 G.Refuse areas Show where site refuse and State how site refuse will be 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 and other details of refuse areas. near dumpsters with the words"Do regularly;repair or replace leaky /ql 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 dean 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. aww.cabmphandbooks.com 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... 9 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 ❑ 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.cabmThandbooks.com See the brochure`Industrial& Commercial Facilities Blest Management Practices for.Industrial,Commercial Facilities"at http://rcflood.org/storrnwater/ STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST IF THESE SOURCES WALL 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 BMP"nclude in WQMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative ❑ 1.Outdoor storage of ❑ Show any outdoor storage areas, Include a detailed description of ❑ 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 berrrted 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 ❑ Storage of non-hazardous liquids Where appropriate,reference v,-ww.cabmnhan books.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 ❑ Storage of hazardous materials and Hazardous Materials Release wastes must be in compliance with the local hazardous materials Response and Inventory ordinance and a Hazardous • California Accidental Release Materials Management Plan for the (CaIARP) site. • Aboveground Storage Tank • Uniform Fire Code Article 80 Section 103(b)&(c)1991 • Underground Storage Tank www.cchcolth.org/gmuRs/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 WQMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative O J.Vehicle and O Show on drawings as appropriate: O If a car wash area is not provided, Describe operational measures to Equipment Cleaning (1)Commercial/industrial facilities describe any measures taken to implement the following(if having vehicle/equipment cleaning discourage on-site car washing and applicable): needs shall either provide a explain how these will be enforced. Cl 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 car washing http://rcflood.org/stormNvater/ is prohibited on-site and hoses are OCar dealerships and similar may provided with an automatic shut- rinse cars with water only. off to discourage such use). (3)Washing areas for cars,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 storm drain system.Wastewater from the facility shall discharge to the sanitary sewer,or a wastewater reclamation system shall be installed. STORMWATER POLLUTANT SOURCES/SOURCE 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 WQMP Operational BMPs—Include In WQMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative ❑ K.Vehicle/Equipment ❑ Accommodate all vehicle ❑ 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. ❑ No person shall dispose of,nor permit prevent run-on and runoff of ❑ State that there are no floor drains the disposal,directly or indirectly of stormwater. or if there are floor drains,note the vehicle fluids,hazardous materials,or ❑ Show secondary containment for agency from which an industrial rinsewater from parts 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 ❑ No vehicle fluid removal shall be fuel,radiator fluid,acid-containing that agency's requirements. batteries or other hazardous performed outside a building,nor on materials or hazardous wastes are ❑ State that there are no tanks, asphalt or ground surfaces,whether containers or sinks to be used for inside or outside a building,except in used or stored.Drains shall not be pans cleaning or rinsing or,if there such a manner as to ensure that any installed within the secondary are,note the agency from which an spilled fluid will be in an area of containment areas. industrial waste discharge permit secondary containment.Leaking ❑ Add a note on the plans that states will be obtained and that the vehicle fluids shall be contained or either(1)there are 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 to the sanitary ❑ parts other open containers n sewer and an industrial waste containing vehicle fluid,unless such containers are in use or in an area of discharge permit will be obtained. secondary containment. Refer to"Automotive Maintenance&Car Cam Best Management Practices for Auto Body Shops,Auto Repair Shops,Car Dealerships,Gas Stations and Fleet Service Operations". Brochure can be found at hrtn://rcflood.on,_istormwater% 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 htm://mFlood.oq*lsnitm��ater i 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 how on Permanent Controls—List in WQMP Operational BMPs—Include in WQMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative L.Fuel Dispensing Fueling areas°shall have The property owner shall dry sweep Arcas impermeable floors(i.e.,portland the fueling arca routinely. cement concrete or equivalent See the Fact Sheet S smooth impervious surface)that r"Fueling are:a)graded at the minimum Areas in the CASQA Si Stormnater Quality Handbooks at slope necessary to prevent ponding; «mm•.cabm nhand honks.com and b)separated from 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 by a 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 arca within the grade break or fuel dispensing area,.] The canopy[or cover]shall not drain onto the fueling area. °The fueling uea shall be defined as the area ectendiug a minimum of 6.i feet from the comer of cash fuel dispenser or the length al which the hose and nozzle assembly may be OPrmted 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 ❑ Show a preliminary design for the ❑ Move loaded and unloaded items loading dock area,including indoors as soon as possible. roofing and drainage.Loading ❑ See Fact Sheet SC-30,"Outdoor docks shall be covered and/or Loading and Unloading,"in the graded to minimize run-on to and runoff from the loading area.Roof Handbooks oksSto at ater Quality downspouts shall be positioned to Handbooks at direct stormwater away from the www.cabmitltandboolcc.com 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. ❑ 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. ❑ 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 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 AN.Fire Sprinkler Test X Provide a means to drain fire ❑ See 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.cabmnh and books.c om o.Miscellaneous Drain Boiler drain lines shall be directly or Wash Water or Other or indirectly connected to the Sources sanitary sewer system and may not Boiler drain lines discharge to the storm drain X system. Condensate drain lines Condensate drain lines may Rooftop equipment discharge to landscaped areas if the Drainage sumps flow is small enough that runoff will not occur.Condensate drain Roofing,gutters,and X lines may not discharge to the trim. storm drain system. ❑ Other sources Rooftop equipment with potential to produce pollutants shall be IK roofed and/or have secondary Y°l containment. Any drainage sumps on-site shall 1►f feature a sediment sump to reduce Jul the quantity of sediment in pumped water. ❑ Avoid roofing,gutters,and trim made of copper or other unprotected metals that may leach into runoff. Include controls for other sources asspecified by local reviewer. STORMWATER POLLUTANT SOURCES/SOURCE 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 WIMP Runoff Pollutants WOMP Drawings Table and Narrative Table and Narrative P.Plazas,sidewalks, I 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. Appendix 9: O&M Operation and Maintenance Plan and Documentation of Finance, Maintenance and Recording Mechanisms -34- SANTA ANA REGION LID/TREATMENT CONTROL BMP OPERATION AND MAINTENANCE INSPECTION FORM This inspection and reporting form is used to document findings of inspections of LID/Treatment Control BMPs and maintenance activities_ for .Cir cl e ,., owned facilities and developments under the jurisdiction of the CirC,%t IK subject to maintenance and annual reporting requirements. A list of types of LID/Treatment Control BMPs is provided on the next page. Annual Reporting Period: Project Site Name: Circle K,Central Ave.,Lake Elsinore Project Site Location / Address: Central Avenue Lake Elsinore CA Sub Watershed ❑ MSAR 2R San Jacinto/Lake Elsinore Owner / Operator: Circle K Stores,Inc. Contact Name: Rona Dhruv Contact Address: 255 E.Rincon,Suite 100,Corona,CA 92879 Contact Phone Number: Contact Email: Inspector Name / Title: Inspector Phone Number: Inspector Signature: Inspection Date ; Time: LID/Treatment Control BMP Information: Identifying Type of Structural Post- Date of Date of Certification Location of Structural Post- Number of Construction BMP Construction to Approved Plans Construction BMP on the Site BMP 1 Stormwater Infiltration Summa of LID/Treatment Control BMP Inspections and Maintenance: Identifying Self or 3 Operation and Maintenance Inspection Results(including vector or nuisance Number of Party Activities Performed and Date(s) problems)and Corrective Actions BMP Certification Conducted SANTA ANA REGION LID/TREATMENT CONTROL BMP OPERATION AND MAINTENANCE INSPECTION FORM Types of LID/Treatment Control BMPs C Bioretention F- Dry Well Extended detention basin C Grass Filter Strip Grass Swale C Green Roof C Infiltration Basin C Infiltration Trench C Landscaped Filter Basin G Porous Pavement ❑ Rain Barrel/Aboveground Cistern ❑ Sand Filter (Austin) ❑ Sand Filter (Delaware) ❑ Sand Filter Basin ❑ Underground Detention/Cistern ❑ Water Quality Inlet ❑ Wet Pond or Constructed Wetland ❑ Other BMPs F- Proprietary BMPs C Biotreatment C Catch Basin Insert C Hydrodynamic Separation IL Media Filtration C Underground Infiltration C Wetland Wet Vault C Other Appendix 10: Educational Materials BMP Fact Sheets, Maintenance Guidelines and Other End-User BMP Information -6- Non-Stormwater Discharges SC-10 objectives • Ed"e i ■ psduce-Minimize r 1 I I*r the H a��rhdJ 1Vn:, — - - — Trnumrnt Fadity Description Targeted Constituents Non-stormwater discharges are those flows that do not consist Sediment (� entirely of stormNater. For municipalities non-stormwater Nutnems discharges present themselves in two situations. One is from Trash fixed facilities owned and/or operated by the municipality. The Metals other situation is non-stormwater discharges that are discovered Bacteria (� during the normal operation of a field program. Some non- 0 stormwater discharges do not include pollutants and may be of and Grease discharged to the storm drain. These include uncontaminated organics groundwater and natural springs. There are also some non- Oxygen Demardina (� stormwater discharges that typically do not contain pollutants and may be discharged to the storm drain with conditions. These include car washing,and surface cleaning. However,there are certain non-stormwater discharges that pose environmental concern. These discharges may originate from illegal dumping or from internal floor drains,appliances,industrial processes, sinks.and toilets that are connected to the nearby storm drainage system. These discharges(which may include;process waste waters,cooling waters,wash waters.and sanitary wastewater)can carry substances(such as paint,oil,fuel and other automotive fluids,chemicals and other pollutants)into storm drains. The ultimate goal is to effectively eliminate non- stormwater discharges to the stormwater drainage system through implementation of measures to detect,correct,and enforce against illicit connections and illegal discharges. Approach The municipality must address non-stormwater discharges from its fixed facilities by assessing the hypes of non-stormwater discharges and implementing BMPs for the discharges determined to pose environmental concern. For field programs 3anuart 2003 Caltfomta Stormwater BMP Handbook 1 of 11 Municipal www.cabm phand books.cam -7- SC-10 Non-Stormwater Discharges the field staff must be trained to now what to look for regarding non-stormwater discharges and the procedures to follow in investigating the detected discharges. Suggested Protocols Fixed Facilih General • Post"No Dumping"signs with a phone number for reporting dumping and disposal. Signs should also indicate fines and penalties for illegal dumping. • Stencil storm drains,where applicable,to pre►ent illegal disposal of pollutants. Storm drain inlets should have messages such as"Dump No Waste Drains to Stream"stenciled nett to them to warn against ignorant or intentional dumping of pollutants into the storm drainage system. • Landscaping and beautification efforts of hot spots might also discourage future dumping, as well as provide open space and increase property values. • Lighting or barriers may also be needed to discourage future dumping. Illicit Connections ■ Locate discharges from the fixed facility drainage system to the municipal storm drain system through review of"as-built"piping schematics. • Use techniques such as smoke testing,dye testing and television camera inspection(as noted below)to verify physical connections. ■ Isolate problem areas and plug Illicit discharge points. Vkual Inspection and Inventory • Inventory and inspect each discharge point during dry weather. • Deep in mind that drainage from a storm event can continue for several days following the end of a storm and groundwater may infiltrate the underground stormwater collection system. Also,non-stormwater discharges are often intermittent and may require periodic inspections. Retdcut Infield Piping ■ Review the"as-built'piping schematic as a way to determine if there are any connections to the stormwater collection system. ■ Inspect the path of floor drains in older buildings. Smoke Testing ■ Smoke testing of wastewater and stormwater collection systems is used to detect connections between the two systems. 2 0t 11 Callfomla Stortnwater BMo handbook January 2003 Municipal www-cabmpha nd books.com -8- Non-Stormwater Discharges SC-10 • During dry weather the stormwater collection system is filled with smoke and then traced to sources. the appearance of smoke at the base of a toilet indicates that there may be a connection between the sanitary and the stormwater system. Dye Testing • A dye test can be performed by simply releasing a dve into either your sanitary or process wastewater system and examining the discharge points from the Stormwater collection system for discoloration. TV Inspection of Storm Setlrr • 'IN'Cameras can be employed to visually identify illicit connections to the fixed facility storm drain system. Illegal Dumping • Regularly inspect and clean up hot spots and other storm drainage areas where illegal dumping and disposal occurs. • Clean up spills on paved surfaces 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. • Never hose down or bun•dry material spills. Sweep up the material and dispose of properly. • 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. • See fad sheet SC-t t Spill Prevention,Control,and Clean Up. General • Develop clear protocols and lines of communication for effectively prohibiting non- stormwater discharges,especially ones that involve more than one jurisdiction and those that are not classified as hazardous,which are often not responded to as effectively as they need to be. • Stencil 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. • See SC-74 Stormwater Drainage System Maintenance for additional information. January 2003 Califomia Stormwater BMp nandook 3 of 11 Municipal www.cabrnpnand books corn -9- SC-10 Non-Stormwater Discharges Field Inspection • Regularly inspect and clean up hot spots and other storm drainage areas where illegal dumping and disposal occurs. ■ During routine field program maintenance field staff should look for evidence of illegal discharges or illicit connection: - Is there evidence of spills such as paints,discoloring,etc. - Are there anv odors associated with the drainage system - Record locations of apparent illegal discharges/illicit connections and notify appropriate investigating agency. ■ If trained,conduct field investigation of non-stormwater discharges to determine whether they pose a threat to water quality. Recommended Complaint Investigation Equipment ■ Field Screening Analysis - pH paper or meter - Commercial stormwater pollutant screening kit that can detect for reactive phosphorus, nitrate nitrogen,ammonium nitrogen,specific conductance,and turbidity - Sample jars - Sample collection pole - A tool to remove access hole covers ■ Laboratory Analysis - Sample cooler - Ice - Sample jars and labels - Chain of custody forms. ■ Documentation - Camera - Notebook - Pens - Notice of Violation forms 4 of 11 California Stormwater 8MP Handbook January 2003 Munic*al www.cabmphandbooks.com - 10- Non-Stormwater Discharges SC-10 Educational materials Reporting • A database is usehil for defining and tracking the magnitude and location of the problem. • Report prohibited non-stormwater discharges observed during the course of normal daily activities so they can be Investigated,contained and cleaned up or eliminated. • Document that non-stormwater discharges have been eliminated by recording tests performed,methods used,dates of testing,and any onsite drainage points observed. • Maintain documentation of illicit connection and illegal dumping incidents,including significant conditionally exempt discharges that are not properly managed- Enforcement • Educate the responsible party if identified on the impacts of their actions,explain the stormwater requirements.and provide information regarding Best Management Practices (BMP),as appropriate. Initiate follow-up and/or enforcement procedures. • If an illegal discharge is traced to a commercial,residential or industrial source,conduct the following activities or coordinate the following activities with the appropriate agency - Contact the responsible part,to discuss methods of eliminating the non-stormwater discharge,including disposal options,recycling,and possible discharge to the sanitary sewer(if within POW limits). - Provide information regarding BNIPs to the responsible part•,where appropriate. - Begin enforcement procedures,if appropriate. - Continue inspection and follow-up activities until the illicit discharge activity has ceased. • If an illegal discharge is traced to a commercial or industrial activity,coordinate information on the discharge with the jurisdiction's commercial and industrial facility inspection program. Training • Train technical staff to identify and document illegal dumping incidents. ■ 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 if one should occur. Employees should be familiar with the Spill Prevention Control and Countermeasure Plan. • Train employees to identify non-stormwater discharges and report them to the appropriate departments. • Train staff who have the authority to conduct surveillance and inspections,and write citations for those caught itlegall}dumping. January 2003 Cal fomla Stormwater BMP Handbook 5 of 11 Municipal www.cabmphandbooks.com - 11- .A Lu Av t FA Z" �`/ c,>�-'d_ � Yr3t�T� �}�Y_ �4'- o II .,.`_/..<> Lu unt 22 IF 5.CCL >< Lu PROJECT LIMITS LEGEND: 114 A- 4 5,277 IF PERVIOUS AREA (6,118 -4------- ---- 2P SF LMA — AC PAVING (13,560 GRAPHIC SCALE CONCRETE (5,189 SF) 30 30 BUILDING (4,320 SF) IN FEET v TOTAL IMPERVIOUS AREA= (23,069 SF 1 inch — 30 ft. PROPOSED SITE A 5 , PERVIOUS VS IMPERVIOUS " 4,663 SF ALLAN STFEET I,, AREA EXHIBIT saxonengineering Vk. -CLF -K STORE C--\, SAXON ENGINEERING SERVICES, INC 29300 CENIRAL Ll 2605 TEMPLE HEIGHTS DRIVE,SUITE A,OCEANSIDE,CA 92056 .;A,\. � 1\1 TEL:949.366.2180 FAX:800.653.4193 LAKE ELSINORF, CA 92532 1n T is 1 I I 1 Lu LEGEND:♦ V\ ' C;e., _,tee♦t m �4 �f �cr �,�«v�•R I"' �' -.o. '� I •' ��pr Z!♦ 1y b„ ,< . a�; - , -ei :o;� z �e � , :ate h , W ,K 5 PERVIOUS AREA (6,379 SF) IL s Q' I r1 y Ll AC PA'v'ING (19,851 SF) he CONCt�ETE (1,983 SF) Lu BUILDING (1 ,494 SF) I -r iW _ TOTAL IMPERVIOUS AREA= (23,328 SF) IV GRAPHIC 77T/''+ ('� qq ,PROJECT 30 GI�,�PIIIC S�1-�L 30 � • '<0: LIMITS ------------------- ( lf,, FEET 1 inch = 30 ft. - \ Y s _ir EXISTING SITE PERVIOUS VS IMPERVIOUS AREA EXHIBIT h smonengineering •- - �, � e., SAXON ENGINEERING SERVICES, INC g.� "• ALLAN STF�EET -:.. S � E • =nvo = _ ,. 29300 CEN 1KAL 2605 TEMPLE HEIGHTS DRIVE,SUITE A,OCEANSIDE,CA 92056 `'� �r — — r — ` — — — — — LAKE- ELSI(dORE, CA 92532 TEL:949.366.2180 FAX:800.653.4193 Santa Ana Watershed VBMp and QBMP worksheets These worksheets are to be used to determine the required Design Capture Volume(VBMp) or the Design Flow Rate(QBMP) for BMPs in the Santa Ana Watershed To verify which watershed your project is located within, visit www.rcflood.org/npdes and use the'Locate my Watershed'tool If your project is not located in the Santa Ana Watershed, Do not use these worksheets! Instead visit www.reflood.org/npdes/develoi)ers.aspx To access worksheets applicable to your watershed Use the tabs across the bottom to access the worksheets for the Santa Ana Watershed Santa Ana Watershed -BMP Design Volume, BMP Legend..VRequired Entries (Rev.10-2011) Calculated Cells (Note this worksheet shall only be used in conjunction with BMP designs from the LID BMP Design Handbook) Company Name Saxon Engineering Services,Inc. Date 7/8/2014 Designed by Kurt Saxon Case No Company Project Number/Name Circle K,Central Avenue,Lake Elsinore,CA BMP Identification BMP NAME/ID Total Area Must match Name/ID used on BMP Design Calculation Sheet Design Rainfall Depth 85th Percentile,24-hour Rainfall Depth, D85= 0.65 inches from the Isohyetal Map in Handbook Appendix E Drainage Management Area Tabulation Insert additional rows if needed to accommodate all DMAs draining to the BMP Proposed 70-euis DMA Design Design Capture Volume on DMA DMA Area Post-Project Surface I Runoff DMA Areas x Storm Volume, VBMP Plans(cubic Type/ID (square feet) Type F Factor Runoff Factor Depth(in) (cubic feet) feet) A-1 344 Natural(CSoil) 0.3 0.23 77.5 A-2 203 Natural(CSoil) 0.3 0.23 45.7 A-3 232 Natural(CSoil) 0.3 0.23 52.2 A-4 233 Natural(CSoil) 0.3 0.23 52.5 A-5 4663 Natural(CSoil) 0.3 0.23 1049.9 A-6 301 Natural(CSoil) 0.3 0.23 67.8 A-7 40 Natural(CSoil) 0.3 0.23 9 A-8 80 Natural(CSoil) 0.3 0.23 18 A-9 20 Natural(CSoil) 0.3 0.23 4.5 D-1 13472 Concrete or Asphalt 1 0.89 12017 D-2 5277 Concrete or Asphalt 1 0.89 4707.1 D-3 4320 Roofs 1 0.89 3853.4 29185 Total 21954.E 0.65 1189.2 CProposed Volume must be greater than the Design Capture Volume Notes: Santa Ana Watershed -BMP Design Volume, BMP Legend..VRequired Entries (Rev.10-2011) Calculated Cells (Note this worksheet shall only be used in conjunction with BMP designs from the LID BMP Design Handbook) Company Name Saxon Engineering Services,Inc. Date 7/8/2014 Designed by Kurt Saxon Case No Company Project Number/Name Circle K,Central Avenue,Lake Elsinore,CA BMP Identification BMP NAME/ID Vegetated Swale Must match Name/ID used on BMP Design Calculation Sheet Design Rainfall Depth 85th Percentile,24-hour Rainfall Depth, D85= 0.65 inches from the Isohyetal Map in Handbook Appendix E Drainage Management Area Tabulation Insert additional rows if needed to accommodate all DMAs draining to the BMP Proposed 70-euis DMA Design Design Capture Volume on DMA DMA Area Post-Project Surface I Runoff DMA Areas x Storm Volume, VBMP Plans(cubic Type/ID (square feet) Type F Factor Runoff Factor Depth(in) (cubic feet) feet) D-1 13,472 Concrete or Asphalt 1 0.89 12017 D-2 5,277 Concrete or Asphalt 1 0.89 4707.1 D-3 4,320 Roofs 1 0.89 3853.4 23069 Total 20577. 00.65 1114.6 CProposed Volume must be greater than the Design Capture Volume Notes: STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST How to use this worksheet(also see Instructions in Section G of the WQMP Template): I. RC%VCW 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 WQ1iP Exhibit. 3. Review Columns 3 and 4 and incorporate all of the corresponding applicable permanent controls and operational BMPs in your WQMP.Use the format shown in Table G.1 on page 23 of this WQN111 Template.Describe your specific NMI's in an accompanying narrative,and explain any special conditions or situations that required omitting BMPs or substituting alternative BNII's for those shown here. 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 A.On-site storm drain ❑ Locations of inlets. X Mark all inlets with the words Maintain and periodically repaint or inlets "Only Rain Down the Storm replace inlet markings. Drain"or similar.Catch Basin Provide stormwater pollution Markers may be available from the prevention information at new site Riverside County Flood Control owners,lessees,or operators. and Water Conservation District, ors. call 951.955.1200 to verify. ❑ See applicable operational BMPs in Fact Sheet SC-44,"Drainage System Maintenance,"in the CASQA Stormwater Quality Handbooks at www.cabmnhand booM,com 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." AB.Interior floor drains i State that interior floor drains and Inspect and maintain drains to prevent and elevator shaft sump elevator shaft stump pumps will be blockages and overflow. pumps plumbed to sanitary sewer. ❑ C.Interior parking ❑ State that parking garage floor ❑ Inspect and maintain drains to prevent garages drains will be plumbed to the blockages and overflow. sanitary sewer. 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 D1.Need for future I Note building design features that )Q Provide Integrated Pest Management indoor&structural pest discourage entry of pests. information to owners,lessees,and control operators. D2.Landscape/ O Show locations of native trees or State that final landscape plans will X 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. Preserve existing native trees, See applicable operational BMPs in Show self-retaining landscape shrubs,and ground cover to the "What you should know areas,if any. maximum extent possible. for.....Landscape and Gardening"at O Show stormwater treatment and O Design landscaping to minimize http://rcflood.org/storm,.v2ter/souri hydrograph modification irrigation and runoff,to promote Hyperliak reference not vatld. 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 fertilizers and pesticides that can contribute to stormwater O pollution. Where landscaped areas are used to retain or detain stormwater,specify plants that are tolerant of saturated Asoil conditions. Consider using pest-resistant plants,especially adjacent to handscape. To 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 O E.Pools,spas,ponds, O Show location of water feature and If the Co-Permittee requires pools O See applicable operational BMPs in decorative fountains, a sanitary sewer cleanout in an to be plumbed to the sanitary "Guidelines for Maintaining Your 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 http://rcflood.org/stormxvater/ Department of Environmental to local requirements. Health Guidelines.) I F.Food service A For restaurants,grocery stores,and X Describe the location and features X See the brochure,"1-he Food Service other food service operations,show of the designated cleaning area. Industry Best Management Practices for. location(indoors or in a covered Describe the items[o be cleaned in Restaurants,Grocery-Stores, area outdoors)of a floor sink or Delicatessens and Bakeries"at this facility and how it has been other area for cleaning floor mats, sized to insure that the largest http://rcflood.org/storm%vater/ containers,and equipment. items can be accommodated. Provide this brochure to new site XOn the drawing,show a note that owners,lessees,and operators. this drain will be connected to a grease interceptor before discharging to the sanitary sewer. 1 G.Refuse areas Show where site refuse and State how site refuse will be 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 and other details of refuse areas. near dumpsters with the words"Do regularly;repair or replace leaky /ql 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 dean 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. aww.cabmphandbooks.com 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... 9 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 ❑ 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.cabmThandbooks.com See the brochure`Industrial& Commercial Facilities Blest Management Practices for.Industrial,Commercial Facilities"at http://rcflood.org/storrnwater/ STORMWATER POLLUTANT SOURCES/SOURCE CONTROL CHECKLIST IF THESE SOURCES WALL 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 BMP"nclude in WQMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative ❑ 1.Outdoor storage of ❑ Show any outdoor storage areas, Include a detailed description of ❑ 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 berrrted 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 ❑ Storage of non-hazardous liquids Where appropriate,reference v,-ww.cabmnhan books.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 ❑ Storage of hazardous materials and Hazardous Materials Release wastes must be in compliance with the local hazardous materials Response and Inventory ordinance and a Hazardous • California Accidental Release Materials Management Plan for the (CaIARP) site. • Aboveground Storage Tank • Uniform Fire Code Article 80 Section 103(b)&(c)1991 • Underground Storage Tank www.cchcolth.org/gmuRs/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 WQMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative O J.Vehicle and O Show on drawings as appropriate: O If a car wash area is not provided, Describe operational measures to Equipment Cleaning (1)Commercial/industrial facilities describe any measures taken to implement the following(if having vehicle/equipment cleaning discourage on-site car washing and applicable): needs shall either provide a explain how these will be enforced. Cl 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 car washing http://rcflood.org/stormNvater/ is prohibited on-site and hoses are OCar dealerships and similar may provided with an automatic shut- rinse cars with water only. off to discourage such use). (3)Washing areas for cars,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 storm drain system.Wastewater from the facility shall discharge to the sanitary sewer,or a wastewater reclamation system shall be installed. STORMWATER POLLUTANT SOURCES/SOURCE 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 WQMP Operational BMPs—Include In WQMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative ❑ K.Vehicle/Equipment ❑ Accommodate all vehicle ❑ 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. ❑ No person shall dispose of,nor permit prevent run-on and runoff of ❑ State that there are no floor drains the disposal,directly or indirectly of stormwater. or if there are floor drains,note the vehicle fluids,hazardous materials,or ❑ Show secondary containment for agency from which an industrial rinsewater from parts 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 ❑ No vehicle fluid removal shall be fuel,radiator fluid,acid-containing that agency's requirements. batteries or other hazardous performed outside a building,nor on materials or hazardous wastes are ❑ State that there are no tanks, asphalt or ground surfaces,whether containers or sinks to be used for inside or outside a building,except in used or stored.Drains shall not be pans cleaning or rinsing or,if there such a manner as to ensure that any installed within the secondary are,note the agency from which an spilled fluid will be in an area of containment areas. industrial waste discharge permit secondary containment.Leaking ❑ Add a note on the plans that states will be obtained and that the vehicle fluids shall be contained or either(1)there are 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 to the sanitary ❑ parts other open containers n sewer and an industrial waste containing vehicle fluid,unless such containers are in use or in an area of discharge permit will be obtained. secondary containment. Refer to"Automotive Maintenance&Car Cam Best Management Practices for Auto Body Shops,Auto Repair Shops,Car Dealerships,Gas Stations and Fleet Service Operations". Brochure can be found at hrtn://rcflood.on,_istormwater% 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 htm://mFlood.oq*lsnitm��ater i 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 how on Permanent Controls—List in WQMP Operational BMPs—Include in WQMP Runoff Pollutants WQMP Drawings Table and Narrative Table and Narrative L.Fuel Dispensing Fueling areas°shall have The property owner shall dry sweep Arcas impermeable floors(i.e.,portland the fueling azca routinely. cement concrete or equivalent Sec the Fact Sheet S smooth impervious surface)that r"Fueling are:a)graded at the minimum Areas to the CASQA Si Stolmnater Quality Handbooks at slope necessary to prevent ponding; «mm•.cabm nhand honks.com and b)separated from the rest of the site by a grade break that prevents run-on of storrnwater to the maximum extent practicable. Fueling areas shall be covered by a canopy that extends a minimum of ten feet in each direction from each pump. ]Altemativc:The fueling area must be covered and the cover's minimum dimensions must be equal to or greater than the arcs within the grade break or fuel dispensing area,.] The canopy[or cover]shall not drain onto the fueling area. °The fueling u shall be defined as the area extending a minimum of 6.i feet from the comer of cash foci dispenser or the length al which the hose and nozzle assembly may be oprmted 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 ❑ Show a preliminary design for the ❑ Move loaded and unloaded items loading dock area,including indoors as soon as possible. roofing and drainage.Loading ❑ See Fact Sheet SC-30,"Outdoor docks shall be covered and/or Loading and Unloading,"in the graded to minimize run-on to and runoff from the loading area.Roof Handbooks oksSto at ater Quality downspouts shall be positioned to Handbooks at direct stormwater away from the www.cabmitltandboolcc.com 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. ❑ 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. ❑ 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 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 AN.Fire Sprinkler Test X Provide a means to drain fire ❑ See 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.cabmnh and books.c om o.Miscellaneous Drain Boiler drain lines shall be directly or Wash Water or Other or indirectly connected to the Sources sanitary sewer system and may not Boiler drain lines discharge to the storm drain X system. Condensate drain lines Condensate drain lines may Rooftop equipment discharge to landscaped areas if the Drainage sumps flow is small enough that runoff will not occur.Condensate drain Roofing,gutters,and X lines may not discharge to the trim. storm drain system. ❑ Other sources Rooftop equipment with potential to produce pollutants shall be IK roofed and/or have secondary Y°l containment. Any drainage sumps on-site shall 1►f feature a sediment sump to reduce Jul the quantity of sediment in pumped water. ❑ Avoid roofing,gutters,and trim made of copper or other unprotected metals that may leach into runoff. Include controls for other sources asspecified by local reviewer. STORMWATER POLLUTANT SOURCES/SOURCE 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 WIMP Runoff Pollutants WOMP Drawings Table and Narrative Table and Narrative P.Plazas,sidewalks, I 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. SANTA ANA REGION LID/TREATMENT CONTROL BMP OPERATION AND MAINTENANCE INSPECTION FORM This inspection and reporting form is used to document findings of inspections of LID/Treatment Control BMPs and maintenance activities_ for .Cir cl e ,., owned facilities and developments under the jurisdiction of the CirC,%t IK subject to maintenance and annual reporting requirements. A list of types of LID/Treatment Control BMPs is provided on the next page. Annual Reporting Period: Project Site Name: Circle K,Central Ave.,Lake Elsinore Project Site Location / Address: Central Avenue Lake Elsinore CA Sub Watershed ❑ MSAR 2R San Jacinto/Lake Elsinore Owner / Operator: Circle K Stores,Inc. Contact Name: Rona Dhruv Contact Address: 255 E.Rincon,Suite 100,Corona,CA 92879 Contact Phone Number: Contact Email: Inspector Name / Title: Inspector Phone Number: Inspector Signature: Inspection Date ; Time: LID/Treatment Control BMP Information: Identifying Type of Structural Post- Date of Date of Certification Location of Structural Post- Number of Construction BMP Construction to Approved Plans Construction BMP on the Site BMP 1 Stormwater Infiltration Summa of LID/Treatment Control BMP Inspections and Maintenance: Identifying Self or 3 Operation and Maintenance Inspection Results(including vector or nuisance Number of Party Activities Performed and Date(s) problems)and Corrective Actions BMP Certification Conducted SANTA ANA REGION LID/TREATMENT CONTROL BMP OPERATION AND MAINTENANCE INSPECTION FORM Types of LID/Treatment Control BMPs C Bioretention F- Dry Well Extended detention basin C Grass Filter Strip Grass Swale C Green Roof C Infiltration Basin C Infiltration Trench C Landscaped Filter Basin G Porous Pavement ❑ Rain Barrel/Aboveground Cistern ❑ Sand Filter (Austin) ❑ Sand Filter (Delaware) ❑ Sand Filter Basin ❑ Underground Detention/Cistern ❑ Water Quality Inlet ❑ Wet Pond or Constructed Wetland ❑ Other BMPs F- Proprietary BMPs C Biotreatment C Catch Basin Insert C Hydrodynamic Separation IL Media Filtration C Underground Infiltration C Wetland Wet Vault C Other SC-10 Non-Stormwater Discharges • Train municipal staff responsible for surveillance and inspection in the following: OSHA-required Health and Safety Training(29 CFR 1910.120)plus annual refresher training(as needed). OSHA Confined Space Entry training(Cal-OSHA Confined Space,Title 8 and federal OSHA 29 CFR 1910.146). Procedural training(field screening.sampling.smoke/dve testing.•Il'inspection). • Educate the identified responsible part-on the impacts of his or her actions. SpW Response and Prevention • Sec SC-11 Spill Prevention Control and Clean Up Other Considerations ■ The elimination of illegal dumping is dependent on the availability,convenience,and cost of alternative means of disposal. The cast of fees for dumping at a proper waste disposal facility are often more than the fine for an illegal dumping offense,thereby discouraging peopk from complying with the law. The absence of routine or affordable pickup service for trash and recyclables in some communities also encourages illegal dumping. A lack of understanding regarding applicable laws or the inadequacy of existing laws may also contribute to the problem. • Municipal codes should include sections prohibiting the discharge of soil,debris,refuse, hazardous wastes,and other pollutants into the storm drain system. • Ntan•facilities do not have accurate,up-to-date schematic drawings. • can be difficult to locate illicit connections especially if there is groundwater infiltration. Requirements Costs ■ Eliminating illicit connections can be expensive especially if structural modifications are required such re-plumbing cross connections under an existing slab. ■ Minor cost to train field crews regarding the identification of non-stormw•ater discharges. The primary cost is for a fully integrated program to identify and eliminate illicit connections and illegal dumping. However,by combining with other municipal programs(i.e. pretreatment program)cost may be lowered. • Municipal cost for containment and disposal may be borne by the discharger. Alaintenance Not applicable 6 of 11 California Starmwater HMP Handbook ,anuary 2003 Municipal www.ca b rnp ha nd b ooks.corn - 12- Non-Stormwater Discharges SC-10 Supplemental Information Further Detail of the B31P What constitutes a-non-stormwater"discharge? • Non-stormwater discharges are discharges not made up entirely of stormwater and include water used directly in the manufacturing process(process wastewater),air conditioning condensate and coolant.non-contact cooling water,cooling equipment condensate,outdoor secondary containment water,vehicle and equipment wash water.landscape irrigation,sink and drinking fountain wastewater,sanitary wastes,or other wastewaters. Permit Requirements Current municipal NPDES permits require municipalities to effectively prohibit non- stormwater discharges unless authorized by a separate NPDES permit or allowed in accordance with the current NPDES permii conditions. Typically the current permits allow certain non-stormwater discharges in the storm drain system as long as the discharges are not significant sources of pollutants. In this context the following non-stormwater discharges are typically allowed: - Diverted stream flows; - Rising found waters; - Uncontaminated ground water infiltration(as defined at 40 CFR 35.20O5(2O)); - Uncontaminated pumped ground water; - Foundation drains; - Springs; - Water from crawl space pumps; - Footing drains; - Air conditioning condensation; - Flows from riparian habitats and wetlands; - Water line and hydrant flushing; - Landscape irrigation; - Planned and unplanned discharges from potable water sources; - Irrigation water. - Individual residential car washing;and - Lawn watering. January 2003 California Stormwater BMP Handbook 7 of 11 Municipal www.cabmphand books.com - 13- SC-10 Non-Stormwater Discharges Municipal facilities subject to industrial general permit requirements must include a certification that the stormwater collection system has been tested or evaluated for the presence of non-stormwater discharges. The state's General Industrial Stormwater Permit requires that non-stormwater discharges he eliminated prior to implementation of the facility's SWPPP. Illegal Dumping ■ Establish a system for tracking incidents. The system should be designed to identify the following: - Illegal dumping hot spots - TtiWs 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 Outreach one of the keys to success of reducing or eliminating illegal dumping is increasing the number of people on the street who are aware of the problem and who have the tools to at least identify the incident,if not correct it. There we a number of ways of accomplishing this: ■ Train municipal staff from all departments(public works,utilities,street cleaning,parks and recreation,industrial waste inspection,hazardous waste inspection,sewer maintenance)to recognize and report the incidents. ■ Deputize municipal staff who may come into contact with illegal dumping with the authority to write illegal dumping tickets for offenders caught in the act(see below). ■ Educate the public. As many as 3 out of 4 people do not understand that in most communities the storm drain does not go to the wastewater treatment plant. Unfortunately, with the heavy emphasis in recent years on public education about solid waste management, including recycling and household hazardous waste,the sewer system(both storm and sanitary)has been the likely recipient of cross-media transfers of waste. ■ Provide the public with a mechanism for reporting incidents such as a hot line and/or door hanger(see below). ■ Help areas where incidents occur more frequently set up environmental watch programs (like crime watch programs). ■ Train volunteers to notice and report the presence and suspected source of an observed pollutant to the appropriate public agency. B of 11 Calrfornia stormwater BMa Handbook January 2003 MuNdpal www.cabmphandbooks.com - 14- Non-Stormwater Discharges SC-10 What constitutes a"non-stormuater'discharge? a Non-stormwater discharges are discharges not made up entirely of stormwater and include water used directly in the manufacturing process(process wastewater),air conditioning condensate and coolant,non-contact cooling water,cooling equipment condensate,outdoor secondary containment water.vehicle and equipment wash water,landscape irrigation,sink and drinking fountain wastewater,sanitary wastes,or other wastewaters. Permit Requirements a Current municipal NPDES permits require municipalities to effectively prohibit non- stormwater discharges unless authorized by a separate NPDES permit or allowed in accordance with the current NPDES permii conditions. typically the current permits allow certain non-stormwater discharges in the storm drain system as long as the discharges am not significant sources of pollutants. in this conteal the following non-stormwater discharges are typically allowed: - Diverted stream flows; - Rising found waters: - Uncontaminated ground water infiltration(as defined at 40 CFR 35.2005(20)); - Uncontaminated pumped ground water: - Foundation drains; - Springs; - Water from crawl space pumps; - Footing drains: - fir conditioning condensation; - Flows from riparian habitats and wetlands; - Water line and hydrant flushing; - Landscape irrigation; - Planned and unplanned discharges from potable water sources; - irrigation water; - Individual residential car washing.and - Lawn watering. Municipal facilities subject to industrial general permit requirements must include a certification that the stormwater collection system has been tested or evaluated for the presence January 2003 Ca4fornla 5torrnwater BHP Handbook 9 of 11 Municipal www.cabrnphandbooks corn - 15 - SC-10 Non-Stormwater Discharges of non-stormHater discharges. The state's General industrial Stormwater Permit requires that non-Stormwater discharges he eliminated prior to implementation of the facilitiVs SWPPP. Storm Drain Stenciling • Stencil storm drain inlets with a message to prohibit illegal dumpings,especially in areas with waste handling facilities. ■ Encourage public reporting of improper waste disposal by a HOTLINE number stenciled onto the storm drain inlet. ■ See Supplemental Information section of this fact sheet for further detail on stenciling program approach. Oil Recycling ■ Contract collection and hauling of used oil to a private licensed used oil hauler/rm-cler. ■ Comply with all applicable state and federal regulations regarding storage,handling,and transport of petroleum products. ■ Create procedures for collection such as;collection locations and schedule,acceptable containers,and maximum amounts accepted. • The California Integrated Waste Management Board has a Recycling Hotline,(8W)553- 2962,that provides information and recycling locations for used oil. Household Hazardous Waste • Provide household hazardous waste I HHW)collection facilities. Several hypes of collection approaches are available including permanent,periodic,or mobile centers.curbside collection,or a combination of these systems. Training ■ Train municipal employees and contractors in proper and consistent methods for waste disposal. ■ Train municipal employees to recognize and report illegal dumping. ■ Train employees and subcontractors in proper hazardous waste management. Spill Response and Prawntion ■ Refer to SC-it.Spill Prevention.Control&Cleanup ■ Have spill cleanup materials readily available and in a known location. ■ Cleanup spills immediately and use dry methods if possible. ■ Property dispose of spill cleanup material. 10 of 11 Caldornla Storm Hater BMP Handbook January 20O3 Municipal www.cabrnpha ndbooks.corn - 16- Non-Stormwater Discharges SC-10 Other Considerations ■ Federal Regulations(RCRA,SARI,CERCL-%)and state regulations exist regarding the disposal of hazardous waste. • Municipalities are required to have a used oil recycling element and a HHW element within their integrated waste management plan. • Significant liability issues are involved with the collection,handling,and disposal of HHW. Exarnpiea The City of Palo Alto has developed a public participation program for reporting dumping violations. When a concerned citizen or public employee encounters evidence of illegal dumping,a door hanger(similar in format to hotel"Do Not Disturb"signs)is placed on the front doors in the neighborhood. The door hanger notes that a violation has occurred in the neighborhood,informs the reader why illegal dumping is a problem,and notes that illegal dumping carries a significant financial penalty. information is also pro-tided on what citizens can do as well as contact numbers for more information or to report a violation. The Port of Long Beach has a state of the art database incorporating storm drain infrastructure. potential pollutant sources,facility management practices,and a pollutant tracking system. The State Department of Fish and Game has a hotline for reporting violations called CaITIP 0- 800-952-540o). The phone number may be used to report any violation of a Fish and Game code(illegal dumping,poaching,etc.). The California Department of Toxic Substances Control's Waste.Vert Hotline,i-800-69TOh'IC, can be used to report hazardous waste violations. References and Resources hip://www•.stormwatercenter.net/ California's Nonpoint Source Program Plan hLW://www•.co.cl.trk_w.i.it%/nubworl�c/bmi man,Rf Ding County Stormwater Pollution Control Manual-http://dnr.metrokc.goylwlr/dmlSpcm.htm Orange County Stormwater Program. http://w%-w.oc%•atersheds.com/stormwater/.%%-p—introduction.asp San Diego Stormwater Co-permittees Jurisdictional Urban Runoff Management Program (http://ww%v.proiectcleanwater.or^1 Santa Clara Valley Urban Runoff Pollution Prevention Program httip://www.sc%,dmvp-w2Lcomli)df%20doctiments/PS ICID.PDF January-1003 California Stormwater BMP Handbook 11 of 11 Municipal www.cabmphandbooks.com - 17- Spill Prevention, Control & Cleanup SC- 11 ■ Objectives ■ Cover ■ Contain ■ Educate ■ Reduce/Minimize ■ Product Substitution Description Spills and leaks,if not properly controlled,can adversely impact Targeted Constituents the storm drain system and receiving waters. Due to the type of Sediment work or the materials involved,many activities that occur either Nutrients at a municipal facility or as a part of municipal field programs Trash have the potential for accidental spills and leaks. Proper spill Metals (✓� response planning and preparation can enable municipal employees to effectively respond to problems when they occur Bacteria and minimize the discharge of pollutants to the environment. Oil and Grease <✓7 Organics Approach Oxygen Demanding t� ■ An effective spill response and control plan should include: - Spill/leak prevention measures; - Spill response procedures; - Spill cleanup procedures; - Reporting;and - Training ■ Awell thought out and implemented plan can prevent pollutants from entering the storm drainage system and can be used as a tool for training personnel to prevent and control future spills as well. Pollution Prevention ■ Develop and implement a Spill Prevention Control and Response Plan. The plan should include: January 2003 California Stormwater BMP Handbook 1 of 6 Municipal www.cabmphandbooks.com - 18- SC- 11 Spill Prevention, Control & Cleanup - A description of the facility,the address,activities and materials involved - Identification of key spill response personnel - Identification of the potential spill areas or operations prone to spills/leaks - Identification of which areas should be or are bermed to contain spills/leaks - Facility map identifying the key locations of areas,activities,materials,structural BMPs, etc. - Material handling procedures - Spill response procedures including: - Assessment of the site and potential impacts - Containment of the material - Notification of the proper personnel and evacuation procedures - Clean up of the site - Disposal of the waste material and - Proper record keeping ■ Product substitution—use less toxic materials(i.e.use water based paints instead of oil based paints) ■ Recycle,reclaim,or reuse materials whenever possible. This will reduce the amount of materials that are brought into the facility or into the field. Suggested Protocols Spill/Leak Prevention Measures ■ If possible,move material handling indoors,under cover,or away from storm drains or sensitive water bodies. ■ Properly label all containers so that the contents are easily identifiable. ■ Berm storage areas so that if a spill or leak occurs,the material is contained. ■ Cover outside storage areas either with a permanent structure or with a seasonal one such as a tarp so that rain can not come into contact with the materials. ■ Check containers(and any containment sumps)often for leaks and spills.Replace containers that are leaking,corroded,or otherwise deteriorating with containers in good condition. Collect all spilled liquids and properly dispose of them. 2 of 6 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com - 19- Spill Prevention , Control & Cleanup SC- 11 ■ Store,contain and transfer liquid materials in such a manner that if the container is ruptured or the contents spilled,they will not discharge,flow or be washed into the storm drainage system,surface waters,or groundwater. ■ Place drip pans or absorbent materials beneath all mounted taps and at all potential drip and spill locations during the filling and unloading of containers.Any collected liquids or soiled absorbent materials should be reused/recycled or properly disposed of. ■ For field programs,only transport the minimum amount of material needed for the daily activities and transfer materials between containers at a municipal yard where leaks and spill are easier to control. ■ If paved,sweep and clean storage areas monthly,do not use water to hose down the area unless all of the water will be collected and disposed of properly. ■ Install a spill control device(such as a tee section)in any catch basins that collect runoff from any storage areas if the materials stored are oil,gas,or other materials that separate from and float on water.This will allow for easier cleanup if a spill occurs. ■ If necessary,protect catch basins while conducting field activities so that if a spill occurs,the material will be contained. Training ■ Educate employees about spill prevention,spill response and cleanup on a routine basis. ■ Well-trained employees can reduce human errors that lead to accidental releases or spills: - The employees should have the tools and knowledge to immediately begin cleaning up a spill if one should occur. - Employees should be familiar with the Spill Prevention Control and Countermeasure Plan if one is available. ■ Training of staff from all municipal departments should focus on recognizing and reporting potential or current spills/leaks and who they should contact. ■ Employees responsible for aboveground storage tanks and liquid transfers for large bulk containers should be thoroughly familiar with the Spill Prevention Control and Countermeasure Plan and the plan should be readily available. Spill Response and Prevention ■ Identify key spill response personnel and train employees on who they are. ■ Store and maintain appropriate spill cleanup materials in a clearly marked location near storage areas;and train employees to ensure familiarity with the site's spill control plan and/or proper spill cleanup procedures. ■ Locate spill cleanup materials,such as absorbents,where they will be readily accessible(e.g. near storage and maintenance areas,on field trucks). January 2003 California Stormwater BMP Handbook 3 of 6 Municipal www.cabmphandbooks.com -20- SC- 11 Spill Prevention , Control & Cleanup ■ Follow the Spill Prevention Control and Countermeasure Plan if one is available. ■ If a spill occurs,notify the key spill response personnel immediately. If the material is unknown or hazardous,the local fire department may also need to be contacted. ■ If safe to do so,attempt to contain the material and block the nearby storm drains so that the area impacted is minimized. If the material is unknown or hazardous wait for properly trained personnel to contain the materials. ■ Perform an assessment of the area where the spill occurred and the downstream area that it could impact.Relay this information to the key spill response and clean up personnel. Spill Cleanup Procedures ■ Small non-hazardous spills - Use a rag,damp cloth or absorbent materials for general clean up of liquids - Use brooms or shovels for the general clean up of dry materials - If water is used,it must be collected and properly disposed of. The wash water can not be allowed to enter the storm drain. - Dispose of any waste materials properly - Clean or dispose of any equipment used to clean up the spill properly ■ Large non-hazardous spills - Use absorbent materials for general clean up of liquids - Use brooms,shovels or street sweepers for the general clean up of dry materials - If water is used,it must be collected and properly disposed of. The wash water can not be allowed to enter the storm drain. - Dispose of any waste materials properly - Clean or dispose of any equipment used to clean up the spill properly ■ For hazardous or very large spills,a private cleanup company or Hazmat team may need to be contacted to assess the situation and conduct the cleanup and disposal of the materials. ■ Chemical cleanups of material can be achieved with the use of absorbents,gels,and foams. Remove the adsorbent materials promptly and dispose of according to regulations. ■ 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. Reporting ■ Report any spills immediately to the identified key municipal spill response personnel. 4 of 6 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com - 21 - Spill Prevention, Control & Cleanup SC- 11 ■ Report spills in accordance with applicable reporting laws. Spills that pose an immediate threat to human health or the environment must be reported immediately to the Office of Emergency Service(OES) ■ Spills that pose an immediate threat to human health or the environment may also need to be reported within 24 hours 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) ■ After the spill has been contained and cleaned up,a detailed report about the incident should be generated and kept on file(see the section on Reporting below). The incident may also be used in briefing staff about proper procedures Other Considerations ■ State regulations exist for facilities with a storage capacity of 10,000 gallons or more of petroleum to prepare a Spill Prevention Control and Countermeasure Plan(SPCC)Plan (Health&Safety Code Chapter 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,if permitted to do so,prohibiting any hard connections to the storm drain. Requirements Costs ■ 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 wastes, contaminated soil and water is very expensive Maintenance ■ 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 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 response and containment of a spill. A good record keeping system helps the municipality minimize incident recurrence,correctly respond with appropriate containment and cleanup activities,and comply with legal requirements. Arecord 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 drain. January 2003 California Stormwater BMP Handbook 5 of 6 Municipal www.cabmphandbooks.com -22- SC- 11 Spill Prevention, Control & Cleanup 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. Examples The City of Palo Alto includes spill prevention and control as a major element of its highly effective program for municipal vehicle maintenance shops. References and Resources King County Storm water Pollution Control Manual-http://dnr.metrokc.sov/wlr/dss/sl2cm.htm Orange County Stormwater Program http://www.ocwatersheds.com/storm water/swp in troduction.asp San Diego Stormwater Co-permittees Jurisdictional Urban Runoff Management Program (URMP) http://www.proiectcleanwater.org//pdf/Model%20Program%20Municil2al%20Facilities.pdf 6 of 6 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com - 23 - Waste Handling & Disposal SC-34 Objectives ■ Cover ■ Contain ■1 ■ Educate ■ Reduce/Minimize '• — ■ Product Substitution Description Improper storage and handling of solid wastes can allow toxic Targeted Constituents 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 (✓7 disposal can be prevented and reduced by tracking waste Metals (✓7 generation,storage,and disposal;reducing waste generation and Bacteria (� disposal through source reduction,re-use,and recycling;and preventing runon and runoff. Oil and Grease (✓7 Organics � Approach Oxygen Demanding l� Pollution Prevention ■ Reduction in the amount of waste generated can be accomplished using the following source controls such as: - 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. ■ Recycle materials whenever possible. • January 2003 California Stormwater BMP Handbook 1 of 5 Municipal www.cabmphandbooks.com -24- 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 runon 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 or leaks regularly. Repair or replace damaged containers as necessary. ■ Secure solid waste containers;containers must be closed tightly when not in use. ■ Place waste containers under cover if possible. ■ 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 2 of 5 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com - 25 - Waste Handling & Disposal SC- 34 disposed of in solid waste containers(see chemical/ hazardous waste collection section below). ■ 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. ■ Stencil storm drains on the facility's property with prohibitive message regarding waste disposal. ChemicaUHazardous Wastes ■ Select designated hazardous waste collection areas on-site. ■ Store hazardous materials and wastes in covered containers protected from vandalism,and in compliance with fire and hazardous waste codes. ■ Place hazardous waste containers in secondary containment. ■ Make sure that hazardous waste is collected,removed,and disposed of only at authorized disposal areas. Runon/Runoff Prevention ■ Prevent stormwater runon from entering the waste management area by enclosing the area or building a berm around the area. ■ Prevent the 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 January 2003 California Stormwater BMP Handbook 3 of 5 Municipal www.cabmphandbooks.com -26- SC-34 Waste Handling & Disposal ■ 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. ■ Repair leaking equipment including valves,lines,seals,or pumps promptly. Training ■ Train staff pollution prevention measures and proper disposal methods. ■ Train employees and contractors proper spill containment and cleanup. The employee should have the tools and knowledge to immediately begin cleaning up a spill if one should occur. ■ Train employees and subcontractors in proper hazardous waste management. Spill Response and Prevention ■ Refer to SC-11,Spill Prevention,Control&Cleanup. ■ Keep your Spill Prevention Control and countermeasure(SPCA plan up-to-date,and implement accordingly. ■ Have spill cleanup materials readily available and in a known location. ■ Cleanup spills immediately and use dry methods if possible. ■ Properly dispose of spill cleanup material. ■ Vehicles transporting waste should have spill prevention equipment that can prevent spills during transport. The spill prevention equipment includes: - Vehicles equipped with baffles for liquid waste - Trucks with sealed gates and spill guards for solid waste Other Considerations ■ Hazardous waste cannot be re-used or recycled;it must be disposed of by a licensed hazardous waste hauler. Requirements Costs ■ Capital and operation and maintenance costs 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. 4 of 5 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com - 27- Waste Handling & Disposal SC-34 Supplemental Information Further Detail of the BMP Land Treatment System ■ Minimize the runoff of polluted stormwater from land application of municipal waste on-site 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,there is a closed drainage system. 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. References and Resources King County Storm water Pollution Control Manual-http://dnr.metrokc.Rov/wlr/dss/sl2cm.htm Orange County Stormwater Program http://www.ocwatersheds.com/StormWater/swp—introduction.asp Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwater Management Agencies Associations(BASMAA). On-line:http://www.basmaa.ore January 2003 California Stormwater BMP Handbook 5 of 5 Municipal www.cabmphandbooks.com -28- Building & Grounds Maintenance SC-41 Objectives ■ Cover ■ Contain ■ Educate ■ Reduce/Minimize ■ Product Substitution Targeted Constituents Description Sediment 0 Stormwater runoff from building and grounds maintenance Nutrients 0 activities can be contaminated with toxic hydrocarbons in Trash 0 solvents,fertilizers and pesticides,suspended solids,heavy Metals 0 metals,and abnormal pH. Utilizing the following protocols will prevent or reduce the discharge of pollutants to stormwater from Bacteria 0 building and grounds maintenance activities by washing and Oil and Grease 0 cleaning up with as little water as possible,following good Organics 0 landscape management practices,preventing and cleaning up Oxygen Demanding 0 spills immediately,keeping debris from entering the storm drains,and maintaining the stormwater collection system. Approach Pollution Prevention ■ Switch to non-toxic chemicals for maintenance when possible. ■ Choose cleaning agents that can be recycled. ■ Encourage proper lawn management and landscaping, including use of native vegetation. ■ 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. January 2003 California Stormwater BMP Handbook 1 of 5 Municipal www.cabmphandbooks.com -29- SC-41 Building & Grounds Maintenance Suggested Protocols Pressure Washing of Buildings,Rooftops,and Other Large Objects ■ In situations where soaps or detergents are used and the surrounding area is paved,pressure washers must use a waste 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 water 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 he 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. Ensure that this practice does not kill grass. Landscaping Activities ■ Do not apply any chemicals(insecticide,herbicide,or fertilizer)directly to surface waters, unless the application is approved and permitted by the state. ■ 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. ■ Check irrigation schedules so pesticides will not be washed away and to minimize non- stormwater discharge. 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 paint brushes 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. 2 of 5 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -30- Building & Grounds Maintenance SC-41 ■ 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. 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. ■ 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.In which case you should direct the water through hay bales and filter fabric or use other sediment filters or traps. ■ Store toxic material under cover with secondary containment 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 or mechanical 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. ■ Follow manufacturers'recommendations and label directions. Pesticides must never be applied if precipitation is occuring or predicted. Do not apply insecticides within 100 feet of surface waters such as lakes,ponds,wetlands,and streams. ■ Use less toxic pesticides that will do the job,whenever possible. 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. January 2003 California Stormwater BMP Handbook 3 of 5 Municipal www.cabmphandbooks.com -31- SC-41 Building & Grounds Maintenance ■ Apply pesticides only when wind speeds are low. ■ Work fertilizers into the soil rather than dumping or broadcasting them 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. ■ 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 use of pesticides 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 ■ Refer to SC-11,Spill Prevention,Control&Cleanup ■ Keep your Spill Prevention Control and countermeasure(SPCA plan up-to-date,and implement accordingly. ■ Have spill cleanup materials readily available and in a known location. ■ Cleanup spills immediately and use dry methods if possible. ■ Properly dispose of spill cleanup material. Other Considerations ■ Alternative pest/weed controls may not be available,suitable,or effective in many cases. 4 of 5 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -32 - Building & Grounds Maintenance SC-41 Requirements Costs ■ Overall costs should be low in comparison to other BMPs. Maintenance ■ Sweep paved areas regularly to collect loose particles,and wipe up spills with rags and other absorbent material immediately,do not hose down the area to a storm drain. Supplemental Information Further Detail of the BMP Fire Sprinkler Line Flushing Building fire sprinkler tine 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,between flushes and 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 http://www.swrcb.ca.gov/nps/index.html King County-ftp://dnr.metrokc.gov/wlr/dss/spcm/Chapter%203.PDF Orange County Stormwater Program http://www.ocwatersheds.com/StormWater/swp—introduction.asp Mobile Cleaners Pilot Program:Final Report. 1997. Bay Area Stormwater Management Agencies Association(BASSMA)http://www.basmaa.org/ Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwater Management Agencies Association(BASMAA)http://www.basmaa.org_/ San Diego Stormwater Co-permittees Jurisdictional Urban Runoff Management Program (URMP)- h ttp://www.projectclean water.org/pdf/Model%20 Program%20 Mu n icip al%2OFacilities.pdf January 2003 California Stormwater BMP Handbook 5 of 5 Municipal www.cabmphandbooks.com -33- Parking/ Storage Area Maintenance SC-43 Objectives ■ Cover ■ Contain ■ Educate ■ Reduce/Minimize l ■ Product Substitution Targeted Constituents Description Sediment Parking lots and storage areas can contribute a number of Nutrients substances,such as trash,suspended solids,hydrocarbons,oil Trash 0 and grease,and heavy metals that can enter receiving waters Metals 0 through stormwater runoffor non-stormwater discharges.The following protocols are intended to prevent or reduce the Bacteria 0 discharge of pollutants from parking/storage areas and include Oil and Grease 0 using good housekeeping practices,following appropriate Organics 0 cleaning BMPs,and training employees. Oxygen Demanding 0 Approach 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. 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 concentrations. January 2003 California Stormwater BMP Handbook 1 of 4 Municipal www.cabmphandbooks.com -34- SC-43 Parking/ Storage Area Maintenance ■ Arrange rooftop drains to prevent drainage directly onto paved surfaces. ■ Design lot to include semi-permeable hardscape. Controlling Litter ■ Post"No Littering"signs and enforce anti-litter laws. ■ Provide an adequate number of litter receptacles. ■ Clean out and cover titter 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 or vacuuming)to prevent the discharge of pollutants into the stormwater conveyance system. ■ Establish frequency of public parking lot sweeping based on usage and field observations of waste accumulation. ■ Sweep all parking lots at least once before the onset of the wet season. ■ If water is used follow the procedures below: - Block the storm drain or contain runoff. - Wash water should be collected and pumped to the sanitary sewer or discharged to a pervious surface,do not allow wash water to enter storm drains. - Dispose of parking lot sweeping debris and dirt at a landfill. ■ When cleaning heavy oily deposits: - Use absorbent materials on oily spots prior to sweeping or washing. - Dispose of used absorbents appropriately. Surface Repair ■ Pre-heat,transfer or load hot bituminous material away from storm drain inlets. ■ Apply concrete,asphalt,and seal coat during dry weather to prevent contamination form contacting stormwater runoff. ■ Cover and seal nearby storm drain inlets(with waterproof material or mesh)and manholes before applying seal coat,slurry seal,etc.,where applicable. Leave covers in place until job is complete and until all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for proper disposal. 2 of 4 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -35 - Parking/ Storage Area Maintenance SC-43 ■ 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 the parking facilities and storm water conveyance systems associated with them 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 ■ Refer to SC-11,Spill Prevention,Control&Cleanup. ■ Keep your Spill Prevention Control and countermeasure(SPCC)plan up-to-date,nad implement accordingly. ■ Have spill cleanup materials readily available and in a known location. ■ Cleanup spills immediately and use dry methods ifpossible. ■ Properly dispose of spill cleanup material. 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. 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 to minimize cleaning with water. ■ Clean out oil/water/sand separators regularly,especially after heavy storms. ■ Clean parking facilities on a regular basis to prevent accumulated wastes and pollutants from being discharged into conveyance systems during rainy conditions. January 2003 California Stormwater BMP Handbook 3 of 4 Municipal www.cabmphandbooks.com -36- SC-43 Parking/ Storage Area Maintenance Supplemental Information Further Detail o.1 the BMP Surface Repair Apply concrete,asphalt,and seal coat during dry weather to prevent contamination form 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 until 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. References and Resources littp://www.stortilwatercenter.net/ California's Nonpoint Source Program Plan http://www.swrcb.ca. og v/nps/index.html Model Urban Runoff Program: Allow-To Guide for Developing Urban Runoff Programs for Small Municipalities. Prepared by City of Monterey,City of Santa Cruz,California Coastal Commission,Monterey Bay National Marine Sanctuary,Association of Monterey Bay Area Governments,Woodward-Clyde,Central Coast Regional Water Quality control Board. July 1998(Revised February 2002 by the California Coastal Commission). Orange County Stormwater Program http://www.ocwatersheds.com/StormWater/swp—introduction.asp Oregon Association of Clean Water Agencies. Oregon Municipal Stormwater Toolbox for Maintenance Practices. June 1998. Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwater Management Agencies Association(BASMAA)http://www.basma.org San Diego Stormwater Co-permittees Jurisdictional Urban Runoff Management Program (URMP) http://www.12roiectcleanwater.org/pdf/Model%20Program%20Municipal%20Facilities.pdf 4 of 4 California Stormwaler BMP Handbook January 2003 Municipal www.cabmphandbooks.com -37- Drainage System Maintenance SC-44 lr Objectives ■ Cover ■ Cordam �: • Educate ■ ReduceNinimize ^. r _ Description As a consequence of its function,the stormwater conveyance Targeted Constituents system collects and transports urban runoff and stormwater that Se&nent may contain certain pollutants. The protocols in this fact sheet Wrients are intended to reduce pollutants reaching receiving waters Trash through proper conveyance system operation and maintenance. Metals Approach Bacteria Oil and Grease Pollution Prevention Organks 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 WasteXCA IS Q A Handling and Disposal). tormwater auancy Association 3anuary 2003 California Stormwater BMP Handbook I i Industral and Commercial www.cabmphandbooks.com -38- SC-44 Drainage System Maintenance ■ Clean catch basins,storm drain inlets,and other Coll%eyance 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 flashing 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 Came. 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 aMV Handbook January 2003 Industrial and Commercial www,catimphandbooks.com -39- 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,fiuorometric 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 SC-10 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 mining 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-to Non-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 BM7 Handbook 3 of 6 Industrial and Commercial www cabmphandbooks.<om -40- SC-44 Drainage System Maintenance OSHA Confined Space Entry training(Cal-OSHA Confined Space,Title 8 and Federal OSHA 29 CFR 19io.t46). 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-it 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&NI 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 Industnal and Commercial www.wbmpha ndbooks.com -41- Drainage System Maintenance SC-44 ■ ylethods 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. in Teams of at least two people plus administrative personnel are required to identify illicit discharges,depending on the complexity of the storm sewer system. in 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 may be 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 waves 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 yoo feet. At this maximum recommended length,the percent removal efficiency ranges between 65- 7596 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 S of 6 Industrial and Commercial www.cabmphandbooks.com -42- SC-44 Drainage System Maintenance References and Resources California's Nonpoint Source Program Plan hup://w%vw.swrcb.ca.Eov/nps/index.html Clark County Storm Water Pollution Control Manual httt)://w%tizv.co,clark.wa,us/pubworks/bmpman.pdf Ferguson,B.K. 1991. Urban Stream Reclamation.P. 324-322,Journal of Soil and Water Conservation. King County Storm Water Pollution Control Manual htlp://dnr.metroke.toy/wlr/dss/s,pcm.htm 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.scwrppp.org The Storm Water Managers Resource Center httn://www.stnrmwatereenter.net United States Environmental Protection Agency(USEPA). 2002. Pollution Prevention/Good Housekeeping for Municipal Operations Storm Drain System Cleaning. On line: htULllwww.epa,8ov/npdes/menuof bmDs/poll 16.htm 6 of 6 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks corn -43- Housekeeping Practices SC-60 Description Objectives Promote efficient and safe housekeeping practices(storage,use, ■ Cover and cleanup)when handling potentially harmful materials such ■ Contain as fertilizers,pesticides,cleaning solutions,paint products, ■ Educate automotive products,and swimming pool chemicals.Related information is provided in BMP fact sheets SC-11 Spill ■ Reduce/Minimize Prevention,Control&Cleanup and SC-34 Waste Handling& ■ Product Substitution Disposal. Approach Pollution Prevention ■ Purchase only the amount of material that will be needed for foreseeable use. In most cases this will result in cost savings in both purchasing and disposal. See SC-61 Safer Alternative Products for additional information. ■ Be aware of new products that may do the same job with less environmental risk and for less or the equivalent cost. Total Targeted Constituents cost must be used here;this includes purchase price, Sediment 0 transportation costs,storage costs,use related costs,clean up Nutrients 0 costs and disposal costs. Trash 0 Suggested Protocols Metals 0 General Bacteria 0 Oil and Grease 0 ■ Keep work sites clean and orderly. Remove debris in a timely Organics 0 fashion. Sweep the area. Oxygen Demanding 0 ■ Dispose of wash water,sweepings,and sediments,properly. ■ Recycle or dispose of fluids properly. ■ Establish a daily checklist of office,yard and plant areas to confirm cleanliness and adherence to proper storage and security.Specific employees should be assigned specific inspection responsibilities and given the authority to remedy any problems found. ■ Post waste disposal charts in appropriate locations detailing for each waste its hazardous nature(poison,corrosive, flammable),prohibitions on its disposal(dumpster,drain, sewer)and the recommended disposal method(recycle, sewer,burn,storage,landfill). ■ Summarize the chosen BMPs applicable to your operation and post them in appropriate conspicuous places. January 2003 California Stormwater BMP Handbook 1 of 3 Municipal www.cabmphandbooks.com -44- SC-60 Housekeeping Practices ■ Require a signed checklist from every user of any hazardous material detailing amount taken,amount used,amount returned and disposal of spent material. ■ Do a before audit of your site to establish baseline conditions and regular subsequent audits to note any changes and whether conditions are improving or deteriorating. ■ Keep records of water,air and solid waste quantities and quality tests and their disposition. ■ Maintain a mass balance of incoming,outgoing and on hand materials so you know when there are unknown losses that need to be tracked down and accounted for. ■ Use and reward employee suggestions related to BMPs,hazards,pollution reduction,work place safety,cost reduction,alternative materials and procedures,recycling and disposal. ■ Have,and review regularly,a contingency plan for spills,leaks,weather extremes etc.Make sure all employees know about it and what their role is so that it comes into force automatically. Training ■ Train all employees,management,office,yard,manufacturing,field and clerical in BMPs and pollution prevention and make them accountable. ■ Train municipal employees who handle potentially harmful materials in good housekeeping practices. ■ Train personnel who use pesticides in the proper use of the pesticides. The California Department of Pesticide Regulation license pesticide dealers,certify pesticide applicators and conduct onsite inspections. ■ Train employees and contractors in proper techniques for spill containment and cleanup. The employee should have the tools and knowledge to immediately begin cleaning up a spill if one should occur. Spill Response and Prevention ■ Refer to SC-11,Spill Prevention,Control&Cleanup. ■ Keep your Spill Prevention Control and Countermeasure(SPCC)plant up-to-date,and implement accordingly. ■ Have spill cleanup materials readily available and in a known location. ■ Cleanup spills immediately and use dry methods if possible. ■ Properly dispose of spill cleanup material. Other Considerations ■ There are no major limitations to this best management practice. ■ There are no regulatory requirements to this BMP. Existing regulations already require municipalities to properly store,use,and dispose of hazardous materials 2 of 3 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -45 - Housekeeping Practices SC-60 Requirements Costs ■ Minimal cost associated with this BMP. Implementation of good housekeeping practices may result in cost savings as these procedures may reduce the need for more costly BMPs. Maintenance ■ Ongoing maintenance required to keep a clean site. Level of effort is a function of site size and type of activities. Supplemental Information Further Detail of the BMP ■ The California Integrated Waste Management Board's Recycling Hotline, 1-800-553-2962, provides information on household hazardous waste collection programs and facilities. Examples There are a number of communities with effective programs.The most pro-active include Santa Clara County and the City of Palo Alto,the City and County of San Francisco,and the Municipality of Metropolitan Seattle(Metro). References and Resources British Columbia Lake Stewardship Society. Best Management Practices to Protect Water Quality from Non-Point Source Pollution. March 2000. http://www.nalm s.or2/bclss/bmphome.html#bmp King County Stormwater Pollution Control Manual-httl2://dnr.metrokc.eov/wlr/dss/sl2cm.htm Model Urban Runoff Program:AHow-To Guide for Developing Urban Runoff Programs for Small Municipalities,Prepared by City of Monterey,City of Santa Cruz,California Coastal Commission,Monterey Bay National Marine Sanctuary,Association of Monterey Bay Area Governments,Woodward-Clyde,Central Coast Regional Water Quality Control Board. July, 1998,Revised by California Coastal Commission,February 2002. Orange County Stormwater Program http://www.ocwatersheds.com/storm water/swp in troduction.asR San Mateo STOPPP-(http://stol2l2p.tripod.com/bmp.html) January 2003 California Stormwater BMP Handbook 3 of 3 Municipal www.cabmphandbooks.com -46- Plaza and Sidewalk Cleaning SC-71 Objectives ■ Cover ■ Contain ■ Educate ■ Reduce/Minimize ■ Product Substitution f Targeted Constituents Description Sediment 0 Pollutants on sidewalks and other pedestrian traffic areas and Nutrients 0 plazas are typically due to littering and vehicle use. This fact Trash 0 sheet describes good housekeeping practices that can be Metals 0 incorporated into the municipality's existing cleaning and Bacteria 0 maintenance program. Oil and Grease 0 Organics Approach Oxygen Demanding 0 Pollution Prevention ■ Use dry cleaning methods whenever practical for surface cleaning activities. ■ Use the least toxic materials available(e.g.water based paints,gels or sprays for graffiti removal). Suggested Protocols Surface Cleaning ■ Regularly broom(dry)sweep sidewalk,plaza and parking lot areas to minimize cleaning with water. ■ Dry cleanup first(sweep,collect,and dispose of debris and trash)when cleaning sidewalks or plazas,then wash with or without soap. ■ Block the storm drain or contain runoff when cleaning with water. Discharge wash water to landscaping or collect water and pump to a tank or discharge to sanitary sewer if allowed. (Permission may be required from local sanitation district.) January 2003 California Stormwater BMP Handbook 1 of 5 Municipal www.cabmphandbooks.com -47- SC-71 Plaza and Sidewalk Cleaning ■ Block the storm drain or contain runoff when washing parking areas,driveways or drive- throughs. Use absorbents to pick up oil;then dry sweep. Clean with or without soap. Collect water and pump to a tank or discharge to sanitary sewer if allowed. Street Repair and Maintenance. Graffiti Removal ■ Avoid graffiti abatement activities during rain events. ■ Implement the procedures under Painting and Paint Removal in SC-70 Roads,Streets,and Highway Operation and Maintenance fact sheet when graffiti is removed by painting over. ■ Direct runoff from sand blasting and high pressure washing(with no cleaning agents)into a dirt or landscaped area after treating with an appropriate filtering device. ■ Plug nearby storm drain inlets and vacuum/pump wash water to the sanitary sewer if authorized to do so if a graffiti abatement method generates wash water containing a cleaning compound(such as high pressure washing with a cleaning compound). Ensure that a non-hazardous cleaning compound is used or dispose as hazardous waste,as appropriate. Surface Removal and Repair ■ Schedule surface removal activities for dry weather if possible. ■ Avoid creating excess dust when breaking asphalt or concrete. ■ Take measures to protect nearby storm drain inlets prior to breaking up asphalt or concrete (e.g.place hay bales or sand bags around inlets). Clean afterwards by sweeping up as much material as possible. ■ Designate an area for clean up and proper disposal of excess materials. ■ Remove and recycle as much of the broken pavement as possible to avoid contact with rainfall and stormwater runoff. ■ When making saw cuts in pavement,use as little water as possible. Cover each storm drain inlet completely with filter fabric during the sawing operation and contain the slurry by placing straw bales,sandbags,or gravel dams around the inlets. After the liquid drains or evaporates,shovel or vacuum the slurry residue from the pavement or gutter and remove from site. ■ Always dry sweep first to clean up tracked dirt. Use a street sweeper or vacuum truck. Do not dump vacuumed liquid in storm drains. Once dry sweeping is complete,the area may be hosed down if needed. Wash water should be directed to landscaping or collected and pumped to the sanitary sewer if allowed. Concrete Installation and Repair ■ Schedule asphalt and concrete activities for dry weather. 2 of 5 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -48- Plaza and Sidewalk Cleaning SC-71 ■ Take measures to protect any nearby storm drain inlets and adjacent watercourses,prior to breaking up asphalt or concrete(e.g.place san bags around inlets or work areas). ■ Limit the amount of fresh concrete or cement mortar mixed,mix only what is needed for the job. ■ Store concrete materials under cover,away from drainage areas. Secure bags of cement after they are open. Be sure to keep wind-blown cement powder away from streets,gutters,storm drains,rainfall,and runoff. ■ Return leftover materials to the transit mixer. Dispose of small amounts of hardened excess concrete,grout,and mortar in the trash. ■ Do not wash sweepings from exposed aggregate concrete into the street or storm drain. Collect and return sweepings to aggregate base stockpile,or dispose in the trash. ■ Protect applications of fresh concrete from rainfall and runoff until the material has dried. ■ Do not allow excess concrete to be dumped onsite,except in designated areas. ■ Wash concrete trucks off site or in designated areas on site designed to preclude discharge of wash water to drainage system. Controlling Litter ■ Post"No Littering"signs and enforce anti-litter laws. ■ Provide litter receptacles in busy,high pedestrian traffic areas of the community,at recreational facilities,and at community events. ■ Cover litter receptacles and clean out frequently to prevent leaking/spillage or overflow. ■ Clean parking lots on a regular basis with a street sweeper. Training ■ Provide regular training to field employees and/or contractors regarding surface cleaning and proper operation of equipment. ■ Train employee and contractors in proper techniques for spill containment and cleanup. ■ Use a training log or similar method to document training. Spill Response and Prevention ■ Refer to SC-11,Spill Prevention,Control&Cleanup. ■ Have spill cleanup materials readily available and in a known location. ■ Cleanup spills immediately and use dry methods if possible. ■ Properly dispose of spill cleanup material. January 2003 California Stormwater BMP Handbook 3 of 5 Municipal www.cabmphandbooks.com -49- SC-71 Plaza and Sidewalk Cleaning Other Considerations ■ Limitations related to sweeping activities at large parking facilities may include current sweeper technology to remove oil and grease. ■ Surface cleaning activities that require discharges to the local sewering agency will require coordination with the agency. ■ Arrangements for disposal of the swept material collected must be made,as well as accurate tracking of the areas swept and the frequency of sweeping. Requirements COSIS ■ The largest expenditures for sweeping and cleaning of sidewalks,plazas,and parking lots are in staffing and equipment. Sweeping of these areas should be incorporated into street sweeping programs to reduce costs. Maintenance Not applicable Supplemental Information Further Detail of the BMP Community education,such as informing residents about their options for recycling and waste disposal,as well as the consequences of littering,can instill a sense of citizen responsibility and potentially reduce the amount of maintenance required by the municipality. Additional BMPs that should be considered for parking lot areas include: ■ Allow sheet runoff to flow into biofilters(vegetated strip and Swale)and infiltration devices. ■ Utilize sand filters or oleophilic collectors for oily waste in low concentrations. ■ Arrange rooftop drains to prevent drainage directly onto paved surfaces. ■ Design lot to include semi-permeable hardscape. ■ Structural BMPs such as storm drain inlet filters can be very effective in reducing the amount of pollutants discharged from parking facilities during periods of rain. References and Resources Bay Area Stormwater Management Agencies Association(BASMAA). 1996. Pollution From Surface Cleaning Folder http://www.basmaa.or2 Model Urban Runoff Program:AHow-To Guide for Developing Urban Runoff Programs for Small Municipalities. Prepared by City of Monterey,City of Santa Cruz,California Coastal Commission,Monterey Bay National Marine Sanctuary,Association of Monterey Bay Area Governments,Woodward-Clyde,Central Coast Regional Water Quality Control Board. July. 1998. 4 of 5 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -50- Plaza and Sidewalk Cleaning SC-71 Oregon Association of Clean Water Agencies. Oregon Municipal Stormwater Toolbox for Maintenance Practices. June 1998. Orange County Stormwater Program http://www.ocwatersheds.com/storm water/swp introduction.asQ Santa Clara Valley Urban Runoff Pollution Prevention Program. 1997 Urban Runoff Management Plan. September 1997,updated October 2000. Santa Clara Valley Urban Runoff Pollution Prevention Program. Maintenance Best Management Practices for the Construction Industry. Brochures:Landscaping,Gardening,and Pool;Roadwork and Paving;and Fresh Concrete and Mortar Application. June 2001. San Diego Stormwater Co-permittees Jurisdictional Urban Runoff Management Plan. 2001. Municipal Activities Model Program Guidance. November. January 2003 California Stormwater BMP Handbook 5 of 5 Municipal www.cabmphandbooks.com -51- Landscape Maintenance SC- 73 Objectives ■ Contain ■ Educate r ■ Reduce/Minimize ' ■ Product Substitution ALI a- 6 Targeted Constituents Description Sediment 0 Landscape maintenance activities include vegetation removal; Nutrients herbicide and insecticide application;fertilizer application; Trash watering;and other gardening and lawn care practices. Metals Vegetation control typically involves a combination of chemical Bacteria (herbicide)application and mechanical methods. All of these Oil and Grease maintenance practices have the potential to contribute pollutants Organics to the storm drain system. The major objectives of this BMP are Oxygen Demanding to minimize the discharge of pesticides,herbicides and fertilizers to the storm drain system and receiving waters;prevent the disposal of landscape waste into the storm drain system by collecting and properly disposing of clippings and cuttings,and educating employees and the public. Approach Pollution Prevention ■ Implement an integrated pest management(IPM)program. IPM is a sustainable approach to managing pests by combining biological,cultural,physical,and chemical tools. ■ Choose low water using flowers,trees,shrubs,and groundcover. ■ Consider alternative landscaping techniques such as naturescaping and xeriscaping. ■ Conduct appropriate maintenance(i.e.properly timed fertilizing,weeding,pest control,and pruning)to help preserve the landscapes water efficiency. • ` January 2003 California Stormwater BMP Handbook 1 of 6 Municipal www.cabmphandbooks.com -52- SC- 73 Landscape Maintenance ■ Consider grass cycling(grass cycling is the natural recycling of grass by leaving the clippings on the lawn when mowing. Grass clippings decompose quickly and release valuable nutrients back into the lawn). Suggested Protocols Mowing, Trimming,and Weeding ■ Whenever possible use mechanical methods of vegetation removal(e.g mowing with tractor- type or push mowers,hand cutting with gas or electric powered weed trimmers)rather than applying herbicides. Use hand weeding where practical. ■ Avoid loosening the soil when conducting mechanical or manual weed control,this could lead to erosion. Use mulch or other erosion control measures when soils are exposed. ■ Performing mowing at optimal times. Mowing should not be performed if significant rain events are predicted. ■ Mulching mowers may be recommended for certain flat areas. Other techniques may be employed to minimize mowing such as selective vegetative planting using low maintenance grasses and shrubs. ■ Collect lawn and garden clippings,pruning waste,tree trimmings,and weeds. Chip if necessary,and compost or dispose of at a landfill(see waste management section of this fact sheet). ■ Place temporarily stockpiled material away from watercourses,and berm or cover stockpiles to prevent material releases to storm drains. Planting ■ Determine existing native vegetation features(location,species,size,function,importance) and consider the feasibility of protecting them. Consider elements such as their effect on drainage and erosion,hardiness,maintenance requirements,and possible conflicts between preserving vegetation and the resulting maintenance needs. ■ Retain and/or plant selected native vegetation whose features are determined to be beneficial,where feasible. Native vegetation usually requires less maintenance(e.g., irrigation,fertilizer)than planting new vegetation. ■ Consider using low water use groundcovers when planting or replanting. Waste Management ■ Compost leaves,sticks,or other collected vegetation or dispose of at a permitted landfill. Do not dispose of collected vegetation into waterways or storm drainage systems. ■ Place temporarily stockpiled material away from watercourses and storm drain inlets,and berm or cover stockpiles to prevent material releases to the storm drain system. ■ Reduce the use of high nitrogen fertilizers that produce excess growth requiring more frequent mowing or trimming. 2 of 6 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -53 - Landscape Maintenance SC- 73 ■ Avoid landscape wastes in and around storm drain inlets by either using bagging equipment or by manually picking up the material. Irrigation ■ Where practical,use automatic timers to minimize runoff. ■ Use popup sprinkler heads in areas with a lot of activity or where there is a chance the pipes may be broken. Consider the use of mechanisms that reduce water flow to sprinkler heads if broken. ■ Ensure that there is no runoff from the landscaped area(s)if re-claimed water is used for irrigation. ■ If bailing of muddy water is required(e.g.when repairing a water line leak),do not put it in the storm drain;pour over landscaped areas. ■ Irrigate slowly or pulse irrigate to prevent runoff and then only irrigate as much as is needed. ■ Apply water at rates that do not exceed the infiltration rate of the soil. Fertilizer and Pesticide Management ■ Utilize a comprehensive management system that incorporates integrated pest management (IPM)techniques. There are many methods and types of IPM,including the following: - Mulching can be used to prevent weeds where turf is absent,fencing installed to keep rodents out,and netting used to keep birds and insects away from leaves and fruit. - Visible insects can be removed by hand(with gloves or tweezers)and placed in soapy water or vegetable oil. Alternatively,insects can be sprayed off the plant with water or in some cases vacuumed off of larger plants. - Store-bought traps,such as species-specific,pheromone-based traps or colored sticky cards,can be used. - Slugs can be trapped in small cups filled with beer that are set in the ground so the slugs can get in easily. - In cases where microscopic parasites,such as bacteria and fungi,are causing damage to plants,the affected plant material can be removed and disposed of(pruning equipment should be disinfected with bleach to prevent spreading the disease organism). - Small mammals and birds can be excluded using fences,netting,tree trunk guards. - Beneficial organisms,such as bats,birds,green lacewings,ladybugs,praying mantis, ground beetles,parasitic nematodes,trichogramma wasps,seed head weevils,and spiders that prey on detrimental pest species can be promoted. ■ 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. January 2003 California Stormwater BMP Handbook 3 of 6 Municipal www.cabmphandbooks.com -54- SC- 73 Landscape Maintenance ■ Use pesticides only if there is an actual pest problem (not on a regular preventative schedule). ■ Do not use pesticides if rain is expected. Apply pesticides only when wind speeds are low (less than 5 mph). ■ Do not mix or prepare pesticides for application near storm drains. ■ Prepare the minimum amount of pesticide needed for the job and use the lowest rate that will effectively control the pest. ■ Employ techniques to minimize off-target application (e.g.spray drift)of pesticides, including consideration of alternative application techniques. ■ Fertilizers should be worked into the soil rather than dumped or broadcast onto the surface. ■ Calibrate fertilizer and pesticide application equipment to avoid excessive application. ■ Periodically test soils for determining proper fertilizer use. ■ Sweep pavement and sidewalk if fertilizer is spilled on these surfaces before applying irrigation water. ■ Purchase only the amount of pesticide that you can reasonably use in a given time period (month or year depending on the product). ■ Triple rinse containers,and use rinse water as product. Dispose of unused pesticide as hazardous waste. ■ Dispose of empty pesticide containers according to the instructions on the container label. 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. ■ Inspect pesticide/fertilizer equipment and transportation vehicles daily. Training ■ Educate and train employees on use of pesticides and in pesticide application techniques to prevent pollution. Pesticide application must be under the supervision of a California qualified pesticide applicator. ■ Train/encourage municipal maintenance crews to use IPM techniques for managing public green areas. ■ Annually train employees within departments responsible for pesticide application on the appropriate portions of the agency's IPM Policy,SOPs,and BMPs,and the latest IPM techniques. 4 of 6 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -55 - Landscape Maintenance SC- 73 ■ Employees who are not authorized and trained to apply pesticides should be periodically(at least annually)informed that they cannot use over-the-counter pesticides in or around the workplace. ■ Use a training log or similar method to document training. Spill Response and Prevention ■ Refer to SC-11,Spill Prevention,Control&Cleanup ■ Have spill cleanup materials readily available and in a know in location ■ Cleanup spills immediately and use dry methods if possible. ■ Properly dispose of spill cleanup material. Other Considerations ■ The Federal Pesticide,Fungicide,and Rodenticide Act and California Title 3,Division 6, Pesticides and Pest Control Operations place strict controls over pesticide application and handling and specify training,annual refresher,and testing requirements. The regulations generally cover:a list of approved pesticides and selected uses,updated regularly;general application information;equipment use and maintenance procedures;and record keeping. The California Department of Pesticide Regulations and the County Agricultural Commission coordinate and maintain the licensing and certification programs. All public agency employees who apply pesticides and herbicides in"agricultural use"areas such as parks,golf courses,rights-of-way and recreation areas should be properly certified in accordance with state regulations. Contracts for landscape maintenance should include similar requirements. ■ All employees who handle pesticides should be familiar with the most recent material safety data sheet(MSDS)files. ■ Municipalities do not have the authority to regulate the use of pesticides by school districts, however the California Healthy Schools Act of 2000(AB 2260)has imposed requirements on California school districts regarding pesticide use in schools. Posting of notification prior to the application of pesticides is now required,and IPM is stated as the preferred approach to pest management in schools. Requirements Costs Additional training of municipal employees will be required to address IPM techniques and BMPs. IPM methods will likely increase labor cost for pest control which may be offset by lower chemical costs. Maintenance Not applicable January 2003 California Stormwater BMP Handbook 5 of 6 Municipal www.cabmphandbooks.com -56- SC- 73 Landscape Maintenance Supplemental Information Further Detail of the BMP Waste Management Composting is one of the better disposal alternatives if locally available. Most municipalities either have or are planning yard waste composting facilities as a means of reducing the amount of waste going to the landfill. Lawn clippings from municipal maintenance programs as well as private sources would probably be compatible with most composting facilities Contractors and Other Pesticide Users Municipal agencies should develop and implement a process to ensure that any contractor employed to conduct pest control and pesticide application on municipal property engages in pest control methods consistent with the IPM Policy adopted by the agency. Specifically, municipalities should require contractors to follow the agency's IPM policy,SOPS,and BMPs; provide evidence to the agency of having received training on current IPM techniques when feasible;provide documentation of pesticide use on agency property to the agency in a timely manner. References and Resources King County Stormwater Pollution Control Manual. Best Management Practices for Businesses. 1995. King County Surface Water Management. July. On-line: http://dnr.metrokc.2ov/wlr/dss/st)cm.htm Los Angeles County Stormwater Quality Model Programs.Public Agency Activities http://ladpw.or wind/npdes/model links.cfm Model Urban Runoff Program:A How-To Guide for Developing Urban Runoff Programs for Small Municipalities. Prepared by City of Monterey,City of Santa Cruz,California Coastal Commission,Monterey Bay National Marine Sanctuary,Association of Monterey Bay Area Governments,Woodward-Clyde,Central Coast Regional Water Quality Control Board. July. 1998. Orange County Stormwater Program httr)://www.ocwatersheds.com/StormWater/swp in troduction.asp Santa Clara Valley Urban Runoff Pollution Prevention Program. 1997 Urban Runoff Management Plan. September 1997,updated October 2000. United States Environmental Protection Agency(USEPA). 2002. Pollution Prevention/Good Housekeeping for Municipal Operations Landscaping and Lawn Care. Office of Water. Office of Wastewater Management. On-line:http://www.el2a.2ov/npdes/menuofbml2s/12oll 8.htm 6 of 6 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -57- Drainage System Maintenance SC-74 Objectives ■ Contain ■ Educate ■ Reduce/Minimize 1 ar Photo Credit: Geoff Brosseau Description As a consequence of its function,the stormwater conveyance Targeted Constituents system collects and transports urban runoff that may contain Sediment p certain pollutants. Maintaining catch basins,stormwater inlets, Nutrients 0 and other stormwater conveyance structures on a regular basis Trash 0 will remove pollutants,prevent clogging of the downstream Metals 0 conveyance system,restore catch basins'sediment trapping Bacteria (� capacity,and ensure the system functions properly hydraulically Oil and Grease 0 to avoid flooding. Organics � Approach Oxygen Demanding 0 Suggested Protocols Catch Basins//nlet Structures ■ Municipal staff should regularly inspect facilities to ensure 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 SC-75 Waste Handling and Disposal). ■ Clean catch basins,storm drain inlets,and other conveyance structures in high pollutant load areas just before the wet season to remove sediments and debris accumulated during the summer. January 2003 California Stormwater BMP Handbook 1 of 9 Municipal www.cabmphandbooks.com -58- SC-74 Drainage System Maintenance ■ 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. ■ Record the amount of waste collected. ■ 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 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 of. Do not dewater near a storm drain or stream. ■ Except for small communities with relatively few catch basins that may be cleaned manually, most municipalities will require mechanical cleaners such as eductors,vacuums,or bucket loaders. 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 flushed effluent and pump to the sanitary sewer for treatment. Pump Stations ■ Clean all storm drain pump stations prior to the wet season to remove silt and trash. ■ Do not allow discharge from cleaning a storm drain pump station or other facility to reach the storm drain system. ■ Conduct quarterly routine maintenance at each pump station. ■ Inspect,clean,and repair as necessary all outlet structures prior to the wet season. ■ Sample collected sediments to determine if landfill disposal is possible,or illegal discharges in the watershed are occurring. Open Channel ■ Consider modification of storm channel characteristics to improve channel hydraulics,to increase pollutant removals,and to 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 2 of 9 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -59- Drainage System Maintenance SC- 74 (SWRCB,RWQCB,Department of Forestry,Department of Water Resources),and Federal Corps of Engineers and USFWS Illicit Connections and Discharges ■ During routine maintenance of conveyance system and drainage structures field staff should look for evidence of illegal discharges or illicit connections: - Is there evidence of spills such as paints,discoloring,etc. - 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 up gradient manholes or alternate techniques including zinc chloride smoke testing,fluorometric dye testing,physical inspection testing,or television camera inspection. - Once the origin of flow is established,require illicit discharger to eliminate the discharge. ■ Stencil 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 SC-10 Non-Storm water Discharges. Illegal Dumping ■ Regularly inspect and clean up hot spots and other storm drainage areas 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-10 Non-Stormwater Discharges. January 2003 California Stormwater BMP Handbook 3 of 9 Municipal www.cabmphandbooks.com -60- SC-74 Drainage System Maintenance ■ The State Department of Fish and Game has a hotline for reporting violations called Cal TIP (1-800-952-5400).The phone number may be used to report any violation of a Fish and Game code(illegal dumping,poaching,etc.). ■ The California Department of Toxic Substances Control's Waste Alert Hotline, 1-800- 69TOXIC,can be used to report hazardous waste violations. Training ■ Train crews in proper maintenance activities,including record keeping and disposal. ■ Only properly trained individuals are allowed to handle hazardous materials/wastes. ■ Train municipal employees from all departments(public works,utilities,street cleaning, parks and recreation,industrial waste inspection,hazardous waste inspection,sewer maintenance)to recognize and report illegal dumping. ■ Train municipal employees and educate businesses,contractors,and the general public in proper and consistent methods for disposal. ■ Train municipal staff regarding non-stormwater discharges(See SC-10 Non-Stormwater Discharges). Spill Response and Prevention ■ Refer to SC-11,Prevention,Control&Cleanup ■ Have spill cleanup materials readily available and in a known location. ■ Cleanup spills immediately and use dry methods if possible. ■ Properly dispose of spill cleanup material. Other Considerations ■ Cleanup 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 disposal of flushed effluent to sanitary sewer may be prohibited in some areas. ■ Regulations may include adoption of substantial penalties for illegal dumping and disposal. ■ Municipal codes should include sections prohibiting the discharge of soil,debris,refuse, hazardous wastes,and other pollutants into the storm drain system. ■ Private property access rights may be needed to track illegal discharges up gradient. 4 of 9 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -61 - Drainage System Maintenance SC- 74 ■ Requirements of municipal ordinance authority for suspected source verification testing for illicit connections necessary for guaranteed rights of entry. Requirements Costs ■ An aggressive catch basin cleaning program could require a significant capital and O&M budget. A careful study of cleaning effectiveness should be undertaken before increased cleaning is implemented. Catch basin cleaning costs are less expensive if vacuum street sweepers are available;cleaning catch basins manually can cost approximately twice as much as cleaning the basins with a vacuum attached to a sweeper. ■ 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. Encouraging reporting of illicit discharges by employees can offset costs by saving expense on inspectors and directing resources more efficiently. Some programs have used funds available from"environmental fees"or special assessment districts to fund their illicit connection elimination programs. Maintenance ■ Two-person teams may be required to clean catch basins with vactor trucks. ■ Identifying illicit discharges requires teams of at least two people(volunteers can be used), plus administrative personnel,depending on the complexity of the storm sewer system. ■ Arrangements must be made for proper disposal of collected wastes. ■ Requires technical staff to detect and investigate illegal dumping violations,and to coordinate public education. Supplemental I nformation Further Detail of the BMP Storm Drain flushing Sanitary sewer flushing is a common maintenance activity used to improve pipe hydraulics and to remove pollutants in sanitary sewer systems. The same principles that make sanitary sewer flushing effective can be used to flush storm drains. Flushing may be designed to hydraulically convey accumulated material to strategic locations,such as to an open channel,to another point where flushing will be initiated,or over to the sanitary sewer and on to the treatment facilities, thus preventing re-suspension and overflow of a portion of the solids during storm events. Flushing prevents`plug flow"discharges of concentrated pollutant loadings and sediments. The 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 January 2003 California Stormwater BMP Handbook 5 of 9 Municipal www.cabmphandbooks.com -62- SC-74 Drainage System Maintenance cause a flushing wave,the inflated device is rapidly deflated with the assistance of a vacuum pump,releasing the backed up water and resulting in the cleaning of the storm drain segment. To further reduce the impacts of stormwater pollution,a second inflatable device,placed well downstream,may be used to re-collect the water after the force of the flushing wave has dissipated. Apump 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 re-collect the flushed waters. It has been found that cleansing efficiency of periodic flush waves 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 percent for organics and 55-65 percent 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 drain flushing. Flow Management Flow management has been one of the principal motivations for designing urban stream corridors in the past. Such needs may or may not be compatible with the stormwater quality goals in the stream corridor. Downstream flood peaks can be suppressed by reducing through flow velocity. This can be accomplished by reducing gradient with grade control structures or increasing roughness with boulders,dense vegetation,or complex banks forms. Reducing velocity correspondingly increases flood height,so all such measures have a natural association with floodplain open space. Flood elevations laterally adjacent to the stream can be lowered by increasing through flow velocity. However,increasing velocity increases flooding downstream and inherently conflicts with channel stability and human safety. Where topography permits,another way to lower flood elevation is to lower the level of the floodway with drop structures into a large but subtly excavated bowl where flood flows we allowed to spread out. Stream Corridor Planning Urban streams receive and convey stormwater flows from developed or developing watersheds. Planning of stream corridors thus interacts with urban stormwater management programs. If local programs are intended to control or protect downstream environments by managing flows delivered to the channels,then it is logical that such programs should be supplemented by management of the materials,forms,and uses of the downstream riparian corridor. Any proposal for steam alteration or management should be investigated for its potential flow and stability effects on upstream,downstream,and laterally adjacent areas. The timing and rate of flow from various tributaries can combine in complex ways to alter flood hazards. Each section of channel is unique,influenced by its own distribution of roughness elements,management activities,and stream responses. 6 of 9 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -63 - Drainage System Maintenance SC- 74 Flexibility to adapt to stream features and behaviors as they evolve must be included in stream reclamation planning. The amenity and ecology of streams may be enhanced through the landscape design options of 1)corridor reservation,2)bank treatment,3)geomorphic restoration,and 4)grade control. Corridor reservation-Reserving stream corridors and valleys to accommodate natural stream meandering,aggradation,degradation,and over bank flows allows streams to find their own form and generate less ongoing erosion. In California,open stream corridors in recent urban developments have produced recreational open space,irrigation of streamside plantings,and the aesthetic amenity of flowing water. Bank treatment-The use of armoring,vegetative cover,and flow deflection may be used to influence a channel's form,stability,and biotic habitat. To prevent bank erosion,armoring can be done with rigid construction materials,such as concrete,masonry,wood planks and logs, riprap,and gabions. Concrete linings have been criticized because of their lack of provision of biotic habitat. In contrast,riprap and gabions make relatively porous and flexible linings. Boulders,placed in the bed reduce velocity and erosive power. Riparian vegetation can stabilize the banks of streams that are at or near a condition of equilibrium. Binding networks of roots increase bank shear strength. During flood flows, resilient vegetation is forced into erosion-inhibiting mats. The roughness of vegetation leads to lower velocity,further reducing erosive effects. Structural flow deflection can protect banks from erosion or alter fish habitat. By concentrating flow,a deflector causes a pool to be scoured in the bed. Geomorphic restoration—Restoration refers to alteration of disturbed streams so their form and behavior emulate those of undisturbed streams. Natural meanders are retained,with grading to gentle slopes on the inside of curves to allow point bars and riffle-pool sequences to develop. Trees are retained to provide scenic quality,biotic productivity,and roots for bank stabilization,supplemented by plantings where necessary. A restorative approach can be successful where the stream is already approaching equilibrium. However,if upstream urbanization continues new flow regimes will be generated that could disrupt the equilibrium of the treated system. Grade Control-A grade control structure is a level shelf of a permanent material,such as stone, masonry,or concrete,over which stream water flows. A grade control structure is called a sill, weir,or drop structure,depending on the relation of its invert elevation to upstream and downstream channels. A sill is installed at the preexisting channel bed elevation to prevent upstream migration of nick points. It establishes a firm base level below which the upstream channel can not erode. A weir or check dam is installed with invert above the preexisting bed elevation. A weir raises the local base level of the stream and causes aggradation upstream. The gradient,velocity,and erosive potential of the stream channel are reduced. Adrop structure lowers the downstream invert below its preexisting elevation,reducing downstream gradient and velocity. Weirs and drop structure control erosion by dissipating energy and reducing slope velocity. January 2003 California Stormwater BMP Handbook 7 of 9 Municipal www.cabmphandbooks.com -64- SC-74 Drainage System Maintenance When carefully applied,grade control structures can be highly versatile in establishing human and environmental benefits in stabilized channels. To be successful,application of grade control structures should be guided by analysis of the stream system both upstream and downstream from the area to he reclaimed. Examples The California Department of Water Resources began the Urban Stream Restoration Program in 1985. The program provides grant funds to municipalities and community groups to implement stream restoration projects. The projects reduce damages from streambank aid watershed instability and floods while restoring streams'aesthetic,recreational,and fish and wildlife values. In Buena Vista Park,upper floodway slopes are gentle and grassed to achieve continuity of usable park land across the channel of small boulders at the base of the slopes. The San Diego River is a large,vegetative lined channel,which was planted in a variety of species to support riparian wildlife while stabilizing the steep banks of the floodway. References and Resources Ferguson,B.K. 1991. Urban Stream Reclamation,p.324-322,Journal of Soil and Water Conservation. Los Angeles County Stormwater Quality. Public Agency Activities Model Program. On-line: http://Iadl2w.org/wmd/npdes/12ublic TC.cfm Model Urban Runoff Program:AHow-To Guide for Developing Urban Runoff Programs for Small Municipalities. Prepared by City of Monterey,City of Santa Cruz,California Coastal Commission,Monterey Bay National Marine Sanctuary,Association of Monterey Bay Area Governments,Woodward-Clyde,Central Coast Regional Water Quality Control Board. July. 1998. Orange County Stormwater Program http://www.ocwatersheds.com/Storm Water/swp introduction.asp Santa Clara Valley Urban Runoff Pollution Prevention Program. 1997 Urban Runoff Management Plan. September 1997,updated October 2000. San Diego Stormwater Co-permittees Jurisdictional Urban Runoff Management Program (URMP)Municipal Activities Model Program Guidance. 2001. Project Clean Water. November. United States Environmental Protection Agency(USEPA). 1999. Stormwater Management Fact Sheet Non-stormwater Discharges to Storm Sewers. EPA 832-F-99-022. Office of Water, Washington,D.C. September. United States Environmental Protection Agency(USEPA). 1999. Stormwater O&M Fact Sheet Catch Basin Cleaning. EPA 832-F-99-011. Office of Water,Washington,D.C. September. 8 of 9 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -65 - Drainage System Maintenance SC-74 United States Environmental Protection Agency(USEPA). 2002. Pollution Prevention/Good Housekeeping for Municipal Operations Illegal Dumping Control. On line: http://www.el2a. og v/npdes/menuofbm12s/poll 7.htm United States Environmental Protection Agency(USEPA). 2002. Pollution Prevention/Good Housekeeping for Municipal Operations Storm Drain System Cleaning. On line: httr)://www.eva.gov/npdes/menuofbmps/r)oll 16.htm January 2003 California Stormwater BMP Handbook 9 of 9 Municipal www.cabmphandbooks.com -66- Waste Handling and Disposal SC-75 y Objectives ■ Cover r r c' ■ Contain ■ Educate Orange Coast College ■ Reduce/Reuse RECYCLING m •� CENTER �1 t� ♦l. Targeted Constituents Description Sediment It is important to control litter to eliminate trash and other p materials in stormwater runoff. Waste reduction is a major Nutrients 0 component of waste management and should be encouraged Trash 0 through training and public outreach. Management of waste Metals 0 once it is collected may involve reuse,recycling,or proper Bacteria 0 disposal. Oil and Grease 0 Organics Approach Oxygen Demanding 0 Pollution Prevention ■ Reuse products when possible. ■ Encourage recycling programs with recycling bins,used oil collection,etc. Suggested Protocols Solid Waste Collection ■ Implement procedures,where applicable,to collect, transport,and dispose of solid waste at appropriate disposal facilities in accordance with applicable federal,state,and local laws and regulations. ■ Include properly designed trash storage areas. If feasible provide cover over trash storage areas. ■ Regularly inspect solid waste containers for structural damage. Repair or replace damaged containers as necessary. January 2003 California Siormwater BMP Handbook 1 of 4 Municipal www.cabmphandbooks.com -67- SC-75 Waste Handling and Disposal ■ 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). ■ Do not mix wastes;this can cause chemical reactions,make recycling impossible,and complicate disposal. ■ Refer to SC-34 Waste Handling and Disposal for more information regarding solid waste facilities. Waste Reduction and Recycling ■ Recycle wastes whenever possible. Many types of waste can be recycled,recycling options for each waste type are limited. All gasoline,antifreeze,waste oil,and lead-acid batteries can be recycled. Latex and oil-based paint can be reused,as well as recycled. Materials that cannot be reused or recycled should either be incinerated or disposed of at a properly permitted landfill. ■ Recycling is always preferable to disposal of unwanted materials. ■ Recycling bins for glass,metal,newspaper,plastic bottles and other recyclable household solid wastes should be provided at public facilities and/or for residential curbside collection. Controlling Litter ■ Post"No Littering"signs and enforce anti-litter laws. ■ Provide litter receptacles in busy,high pedestrian traffic areas of the community,at recreational facilities,and at community events. ■ Clean out and cover litter receptacles frequently to prevent spillage. Illegal Dum ping Substances illegally dumped on streets and into the storm drain system and creeks include paints,used oil and other automotive fluids,construction debris,chemicals,fresh concrete, leaves,grass clipping,and pet wastes. ■ Post"No Dumping"signs with a phone number for reporting dumping and disposal. Signs should also indicate fines and penalties for illegal dumping. ■ Landscaping and beautification efforts of hot spots might also discourage future dumping. ■ See SC-74 Drainage System Maintenance,and SC-10 Non-Stormwater Discharges. 2 of 4 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -68- Waste Handling and Disposal SC-75 Requirements Costs ■ The costs for a solid waste source control program vary depending on the type of method. The cost of a community education program or a plan to increase the number of trash receptacles can be very minimal. Costs for structural controls such as trash racks,bar screens,and silt traps can be quite costly ranging from$250,000 to$900,000. ■ A collection facility or curbside collection for used oil may result in significant costs. Commercial locations(automobile service stations,quick oil change centers,etc.)as collection points eliminate hauling and recycling costs. ■ Collection and disposal of hazardous waste can be very expensive and requires trained operators;laboratory and detection equipment;and extensive record keeping including dates,types,and quantities. ■ Use of volunteer work forces can lower storm drain stenciling program costs. Stenciling kits require procurement of durable/disposable items. The stenciling program can aid in the cataloging of the storm drain system. One municipality from the state of Washington has estimated that stenciling kits cost approximately$50 each. Stencils may cost about$8 each including the die cost on an order of 1,000. Re-orders cost about$U stencil. Stencil designs may be available from other communities. Stencil kits should be provided on a loan basis to volunteer groups free of charge with the understanding that kit remnants are to be returned. Maintenance ■ The primary staff demand for stenciling programs is for program setup to provide marketing and training. Ongoing/follow-up staff time is minimal because of volunteer services. ■ Staffing requirements are minimal for oil recycling programs if collection/recycling is contracted out to a used oil hauler/recycler or required at commercial locations. ■ Staff requirements for maintaining good housekeeping BMPs at waste handling sites is minimal. Supplemental Information Further Detail of the BMP Waste Reduction An approach to reduce storm water pollution from waste handling and disposal is to assess activities and reduce waste generation. The assessment is designed to find situations where waste can be eliminated or reduced and emissions and environmental damage can be minimized. The assessment involves collecting process specific information,setting pollution prevention targets,and developing,screening and selecting waste reduction options for further study. Starting a waste reduction program is economically beneficial because of reduced raw material purchases and lower waste disposal fees. January 2003 California Stormwater BMP Handbook 3 of 4 Municipal www.cabmphandbooks.com -69- SC-75 Waste Handling and Disposal References and Resources Best Management Practices Program for Pollution Prevention,City and County of San Francisco,Uribe&Associates,Oakland,California, 1990. Harvard University. 2002. Solid Waste Container Best Management Practices—Fact Sheet On- Line Resources—Environmental Health and Safety. Model Urban Runoff Program: A How-To-Guide for Developing Urban Runoff Programs for Small Municipalities. Prepared by City of Monterey,City of Santa Cruz,California Coastal Commission,Monterey Bay National Marine Sanctuary,Association of Monterey Bay Area Governments,Woodward-Clyde,Central Coast Regional Water Quality Control Board. July 1998. (Revised February 2002 by the California Coastal Commission). Orange County Stormwater Program http://www.ocwatersheds.com/Storm Water/swp in troduction.asp. Santa Clara Valley Urban Runoff Pollution Prevention Program. 1997 Urban Runoff Management Plan. September 1997,updated October 2000. 4 of 4 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -70- Water & Sewer Utility Maintenance SC-76 Objectives ■ Contain c . <} ■ Educate ■ Reduce/Minimize Description Targeted Constituents Although the operation and maintenance of public utilities are Sediment 0 not considered chronic sources of stormwater pollution,some Nutrients 0 activities and accidents can result in the discharge of pollutants Trash that can pose a threat to both human health and the quality of Metals receiving waters if they enter the storm drain system. Sewage incident response and investigation may involve a coordinated Bacteria effort between staff from a number of different Oil and Grease departments/agencies. Cities that do not provide maintenance Organics 0 of water and sewer utilities must coordinate with the contracting Oxygen Demanding O agency responsible for these activities and ensure that these model procedures are followed. Approach Pollution Prevention Inspect potential non-stormwater discharge flow paths and clear/cleanup any debris or pollutants found(i.e.remove trash, leaves,sediment,and wipe up liquids,including oil spills). Suggested Protocols Water Line Maintenance and Cleaning Procedures can be employed to reduce pollutants from discharges associated with water utility operation and maintenance activities. Planned discharges may include fire hydrant testing,flushing water supply mains after new construction,flushing lines due to complaints of taste and odor, dewatering mains for maintenance work. Unplanned discharges from treated,recycled water,raw water,and groundwater systems operation and maintenance activities can occur from water main • January 2003 California Stormwater BMP Handbook 1 of 8 Municipal www.cabmphandbooks.com -71- SC-76 Water & Sewer Utility Maintenance breaks,sheared fire hydrants,equipment malfunction,and operator error. Planned discharges ■ Identify a suitable discharge option in the following order of preference: - Apply to the land. - Reuse water for dust suppression,irrigation,or construction compaction. - Discharge to a sanitary sewer system with approval. - Discharge to the storm drain system using applicable pollution control measures. (Only available to clean water discharges such as water main/ water storage tank/water hydrant flushing). ■ If water is discharged to a storm drain,control measures must be put in place to control potential pollutants(i.e.sediment,chlorine,etc.). Examples of some storm drain protection options include: - Silt fence— appropriate where the inlet drains a relatively flat area. - Gravel and wire mesh sediment filter—Appropriate where concentrated flows are expected. - Wooden weir and fabric— use at curb inlets where a compact installation is desired. ■ Prior to discharge,inspect discharge flow path and clear/cleanup any debris or pollutants found(i.e.remove trash,leaves,sediment,and wipe up liquids,including oil spills). ■ General Design considerations for inlet protection devices include the following: - The device should be constructed such that cleaning and disposal of trapped sediment is made easy,while minimizing interference with discharge activities. - Devices should be constructed so that any standing water resulting from the discharge will not cause excessive inconvenience or flooding/damage to adjacent land or structures. ■ The effectiveness of control devices must be monitored during the discharge period and any necessary repairs or modifications made. Unplanned Discharges ■ Stop the discharge as quickly as possible. ■ Inspect flow path of the discharged water: - Identify erodible areas which may need to be repaired or protected during subsequent repairs or corrective actions 2 of 8 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -72 - Water & Sewer Utility Maintenance SC-76 - Identify the potential for pollutants to be washed into the waterway ■ If repairs or corrective action will cause additional discharges of water,select the appropriate procedures for erosion control,chlorine residual,turbidity,and chemical additives. Prevent potential pollutants from entering the flow path. Sanitary Sewer Maintenance Applicable to municipalities who own and operated a sewage collection system. Facilities that are covered under this program include sanitary sewer pipes and pump stations owned and operated by a municipality.The owner of the sanitary sewer facilities is the entity responsible for carrying out this prevention and response program. ■ Clean sewer lines on a regular basis to remove grease,grit,and other debris that may lead to sewer backups. ■ Establish routine maintenance program.Cleaning should be conducted at an established minimum frequency and more frequently for problem areas such as restaurants that are identified ■ Cleaning activities may require removal of tree roots and other identified obstructions. ■ During routine maintenance and inspection note the condition of sanitary sewer structures and identify areas that need repair or maintenance. Items to note may include the following: - Cracked/deteriorating pipes - Leaking joints/seals at manhole - Frequent line plugs - Line generally flows at or near capacity - Suspected infiltration or exfiltration. ■ Prioritize repairs based on the nature and severity of the problem. Immediate clearing of blockage or repair is required where an overflow is currently occurring or for urgent problems that may cause an imminent overflow(e.g.pump station failures,sewer line ruptures,sewer line blockages). These repairs may be temporary until scheduled or capital improvements can be completed. ■ Review previous sewer maintenance records to help identify"hot spots"or areas with frequent maintenance problems and locations of potential system failure. Spills and Overflows ■ Identify and track sanitary sewer discharges. Identify dry weather infiltration and inflow first. Wet weather overflow connections are very difficult to locate. January 2003 California Stormwater BMP Handbook 3 of 8 Municipal www.cabmphandbooks.com -73- SC-76 Water & Sewer Utility Maintenance ■ Locate wet weather overflows and leaking sanitary sewers using conventional source identification techniques such as monitoring and field screening. Techniques used to identify other illicit connection sources can also be used for sewer system evaluation surveys (see SC74 Drainage System Operation and Maintenance). ■ Implement community awareness programs for monitoring sanitary sewer wet weather overflows. A citizen's hotline for reporting observed overflow conditions should be established to supplement field screening efforts. ■ Establish lead department/agency responsible for spill response and containment. Provide coordination within departments. ■ When a spill,leak,and/or overflow occurs and when disinfecting a sewage contaminated area,take every effort to ensure that the sewage,disinfectant and/or sewage treated with the disinfectant is not discharged to the storm drain system or receiving waters. Methods may include: - Blocking storm drain inlets and catch basins - Containing and diverting sewage and disinfectant away from open channels and other storm drain fixtures(using sandbags,inflatable dams,etc.) - Removing the material with vacuum equipment ■ Record required information at the spill site. ■ Perform field tests as necessary to determine the source of the spill. ■ Develop notification procedures regarding spill reporting. Septic Systems ■ Ensure that homeowners,installers,and inspectors are educated in proper maintenance of septic systems. This may require coordination with staff from other departments. Outreach to homeowners should include inspection reminders informing then that inspection and perhaps maintenance is due for their systems. Recommend that the system be inspected annually and pumped-out regularly. ■ Programs which seek to address failing septic systems should consider using field screening to pinpoint areas where more detailed onsite inspection surveys are warranted. Training ■ Conduct annual training of water utility personnel and service contractors.(field screening, sampling,smoke/dye testing,TV inspection). ■ OSHA-required Health and Safety Training 29 CFR 1910.120 plus annual Refresher Training (as needed). ■ OSHA Confined Space Entry training(Cal-OSHA Confined Space,Title 8 and federal OSHA 29 CFR 1910.146). 4 of 8 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -74- Water & Sewer Utility Maintenance SC-76 Spill Response and Prevention ■ See previous section regarding spills and overflows. ■ Refer to SC-11,Spill Prevention,Control&Cleanup. ■ Have spill cleanup materials readily available and in a known location. ■ Cleanup spills immediately and use dry methods if possible. ■ Properly dispose of spill cleanup material. Other Considerations ■ Enact ordinance granting`right-of-entry"to locate potentially responsible parties for sewer overflows. ■ Reliance on individual onsite inspection to detect failed septic systems can be a major limitation.The individual onsite inspection is very labor-intensive and requires access to private property to pinpoint the exact location of the failing system. ■ A significant limitation to correcting failing septic systems is the lack of techniques available for detecting individual failed septic systems. Requirements Costs ■ Departmental cooperation recommended for sharing or borrowing staff resources and equipment from municipal wastewater department. ■ Infiltration,inflow,and wet weather overflows from sanitary sewers are very labor and equipment intensive to locate. ■ The costs associated with detecting and correcting septic system failures are subject to a number of factors,including availability of trained personnel,cost of materials,and the level of follow-up required to fix the system problems. Maintenance ■ Minimum 2-person teams to perform field screening and associated sampling. ■ Larger teams required for implementing other techniques(i.e.zinc chloride smoke testing, fluorometric dye testing,television camera inspection and physical inspection with confined space entry)to identify sewer system leaks. ■ Program coordination required for handling emergencies,record keeping,etc. ■ Many of the problems associated with improper use of septic systems maybe attributed to lack of user knowledge on operation and maintenance.Educational materials for homeowners and training courses for installers and inspectors can reduce the incidence of pollution from these widespread and commonly used pollution control devices. January 2003 California Stormwater BMP Handbook 5 of 8 Municipal www.cabmphandbooks.com -75- SC-76 Water & Sewer Utility Maintenance Supplemental Information Further Detail of the BMP Onsite Sewage Disposal Systems New onsite sewage disposal systems should be designed,located,and installed away from open waterbodies and sensitive resources such as wetlands and floodplains. Aprotective separation between the OSDS and groundwater should also be established. OSDSs should be operated and maintained to prevent surface water discharges and reduce pollutant loadings to groundwater. Inspection of OSDSs should occur regularly and repairs made immediately. New or replacement plumbing fixtures should be of the high efficiency type. Typical Sanitary Sewer Problems ■ Old and deteriorated main and lateral pipes-Sewers range in age from 30 to 100 years with an average age of 50 years. ■ Cracked sewer pipes-Existing sewers are mostly clay pipes which can crack as they deteriorate with age and also by earth movement. ■ Misaligned and open pipe joints-Most of the mortar used to seal the joints between sections of clay pipe has deteriorated. ■ Undersized sewer pipe-The existing sewer system is overloaded due to new sewer hook- ups,underground water infiltration,and illegal roof and/or yard drain connections. ■ Defective manholes-Old manholes are made of bricks.Typical problems associated with brick manholes are loose bricks,missing bricks,and misaligned manholes. ■ Missing and/or unrecorded sewer pipes and manholes-This problem is typical in the easement/backline sewer.Sewer pipe locations shown on the sewer record map are different from the actual sewer location. ■ Sewer main under houses and other improvements-Complaints of sewer main alignment crossing the house and other improvements.A solution to this problem requires an agreement with the property owner for a new sewer easement at a relocated line. Causes of Sanitary Sewer Backups ■ Root infiltration-Tree roots are a major cause of backups. ■ Water inflow/infiltration-Rain water entering the sewer pipe causes overflows. ■ Solids-Typical solids that buildup in the pipe and cause backups are grease,dirt,bones, tampons,paper towels,diapers,broken dishware,garbage,concrete,and debris. ■ Structural defects in pipes and manholes-Sags in the line,cracks,holes,protruding laterals, misaligned pipe,offset joints are all possible causes of backups. 6 of 8 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -76- SC-76 Water & Sewer Utility Maintenance United States Environmental Protection Agency(USEPA). 2001. Pollution Prevention/Good Housekeeping for Municipal Operators Septic System Controls. On-line: http://www.el2a.gov/nl2des/menuofbmps/12oll 14.htm 8 of 8 California Stormwater BMP Handbook January 2003 Municipal www.cabmphandbooks.com -77- Site Design & Landscape Planning SD-10 w Design Objectives 0 Maximize Inkratlon 0 Provide Retention 0 Slow Runoff 0 Minimize Impervious Land Coverage Proh&Dumping of Improper Materials Contain Pollutants .' Caded and Convey 4 f.. p „tip',`" ��' .';•_ __ Description Each project site possesses unique topographic,hydrologic,and vegetative features,some of which are more suitable for development than others. Integrating and incorporating appropriate landscape planning methodologies into the project design is the most effective action that can be done to minimize surface and groundwater contamination from stormwater. Approach Landscape planning should couple consideration of land suitability for urban uses with consideration of community goals and projected growth. Project plan designs should conserve natural areas to the extent possible,maximize natural water storage and infiltration opportunities,and protect slopes and channels. Suitable Applications Appropriate applications include residential,commercial and industrial areas planned for development or redevelopment. Design Considerations Design requirements for site design and landscapes planning should conform to applicable standards and specifications of agencies with jurisdiction and be consistent with applicable General Plan and Local Area Plan policies. January 2003 California Stormwater BMV Handbook 1 of 4 New Development and Redevelopment www.cabm phandtooks.com -78- SD- 10 Site Design & Landscape Planning Designing New Installations Begin the development of a plan for the landscape unit with attention to the following general principles: ■ Formulate the plan on the basis of clearly articulated community goals. Carefully identify conflicts and choices between retaining and protecting desired resources and community growth. ■ Map and assess land suitability for urban uses. Include the following landscape features in the assessment: wooded land,open unwooded land,steep slopes,erosion-prone soils, foundation suitability,soil suitability for waste disposal,aquifers,aquifer recharge areas, wetlands,floodplains,surface waters,agricultural lands,and various categories of urban land use. When appropriate,the assessment can highlight outstanding local or regional resources that the community determines should be protected(e.g.,a scenic area, recreational area,threatened species habitat,farmland,fish run). Mapping and assessment should recognize not only these resources but also additional areas needed for their sustenance. Project plan designs should conserve natural areas to the extent possible,maximize natural water storage and infiltration opportunities,and protect slopes and channels. Conserve Natural Areas during Landscape Planning If applicable,the following items are required and must be implemented in the site layout during the subdivision design and approval process,consistent with applicable General Plan and Local Area Plan policies: Cluster development on least-sensitive portions of a site while leaving the remaining land in a natural undisturbed condition. Limit clearing and grading of native vegetation at a site to the minimum amount needed to build lots,allow access,and provide fire protection. • Maximize trees and other vegetation at each site by planting additional vegetation,clustering tree areas,and promoting the use of native and/or drought tolerant plants. ■ Promote natural vegetation by using parking lot islands and other landscaped areas. • Preserve riparian areas and wetlands. Maximize Natural Water Storage and Infiltration Opportunities Within the Landscape Unit ■ Promote the conservation of forest cover. Building on land that is already deforested affects basin hydrology to a lesser extent than converting forested land. Loss of forest cover reduces interception storage,detention in the organic forest floor layer,and water losses by evapotranspiration,resulting in large peak runoff increases and either their negative effects or the expense of countering them with structural solutions. Maintain natural storage reservoirs and drainage corridors,including depressions,areas of permeable soils,swales,and intermittent streams. Develop and implement policies and 2 of 4 California Stormwater BMP Handbook January 2003 New Development and Redevelopment www_cabmp handbooks_com -79- Site Design & Landscape Planning SD-10 regulations to discourage the clearing,filling,and channelization of these features. Utilize them in drainage networks in preference to pipes,culverts,and engineered ditches. • Evaluating infiltration opportunities by referring to the stormwater management manual for the jurisdiction and pay particular attention to the selection criteria for avoiding groundwater contamination,poor soils,and hydrogeological conditions that cause these facilities to fail. If necessary,locate developments with large amounts of impervious surfaces or a potential to produce relatively contaminated runoff away from groundwater recharge areas. Protection of Slopes and Channels during Landscape Design • Convey runoff safely from the tops of slopes. in Avoid disturbing steep or unstable slopes. • Avoid disturbing natural channels. ■ Stabilize disturbed slopes as quickly as possible. • Vegetate slopes with native or drought tolerant vegetation. • Control and treat flows in landscaping and/or other controls prior to reaching existing natural drainage systems. ■ Stabilize temporary and permanent channel crossings as quickly as possible,and ensure that increases in run-off velocity and frequency caused by the project do not erode the channel. • Install energy dissipaters,such as riprap,at the outlets of new storm drains,culverts, conduits,or channels that enter unlined channels in accordance with applicable specifications to minimize erosion. Energy dissipaters shall be installed in such a way as to minimize impacts to receiving waters. • Line on-site conveyance channels where appropriate,to reduce erosion caused by increased flow velocity due to increases in tributary impervious area. *Me fast choice for linings should be grass or some other vegetative surface,since these materials not only reduce runoff velocities,but also provide water quality benefits from filtration and infiltration. If velocities in the channel are high enough to erode grass or other vegetative linings,riprap, concrete,soil cement,or geo-grid stabilization are other alternatives. • Consider other design principles that are comparable and equally effective. Redeveloping Existing Installations Various jurisdictional stormwater management and mitigation plans(SUSMP,WQMP,etc.) define"redevelopment"in terms of amounts of additional impervious area,increases in gross floor area and/or exterior construction,and land disturbing activities with structural or impervious surfaces. The definition of"redevelopment"must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment If the definition applies,the steps outlined under"designing new installations" above should be followed. January 2003 California Stormwater BMP Handbook 3 of 4 New Development and Redevelopment www.cabmphandt ooks.com -80- SD-10 Site Design & Landscape Planning Redevelopment may present significant opportunity to add features which had not previously been implemented. Examples include incorporation of depressions,areas of permeable soils, and swales in newly redeveloped areas. While some site constraints may exist due to the status of already existing infrastructure,opportunities should not be missed to maximize infiltration, slow runoff,reduce impervious areas,disconnect directly connected impervious areas. Other Resources A Manual for the Standard Urban Stormwater Mitigation Plan(SUSMP),Los Angeles County Department of Public Works,May 2002. Stormwater Management Manual for Western Washington,Washington State Department of Ecology,August 2001. Model Standard Urban Storm Water Mitigation Plan(SUSMP)for San Diego County,Port of San Diego,and Cities in San Diego County,February 14,2002. Model Water Quality Management Plan(WQMP)for County of Orange,Orange County Flood Control District,and the Incorporated Cities of Orange County,Draft February 2003. Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002. 4 of 4 California Stormwater BMG Handbook 3anuary 2003 New Development and Redevelopment www.cabmphandbooks.com -81 - Efficient Irrigation SD-12 f< 'v Design Objectives 0 Maximize Infitrabon 0 Provide Retention Slow Runoff Minimize Impervious Land Coverage Prohebit Dumping of Improper Materials Contain Pollutants Collect and Convey Imam Description Irrigation water provided to landscaped areas may result in excess irrigation water being conveyed into stormwater drainage systems. Approach Project plan designs for development and redevelopment should include application methods of irrigation water that minimize runoff of excess irrigation water into the stormwater conveyance system. Suitable Applications Appropriate applications include residential,commercial and industrial areas planned for development or redevelopment. (Detached residential single-family homes are typically excluded from this requirement.) Design Considerations Uesigraing Nety Insfullutions The following methods to reduce excessive irrigation runoff should be considered,and incorporated and implemented where determined applicable and feasible by the Permittee: ■ Employ rain-triggered shutoff devices to prevent irrigation after precipitation. ■ Design irrigation systems to each landscape area's specific water requirements. • Include design featuring flow reducers or shutoff valves triggered by a pressure drop to control water loss in the event of broken sprinkler heads or lines. ■ Implement landscape plans consistent with County or City water conservation resolutions,which may include provision of water sensors,programmable irrigation times(for short cycles),etc. January 2003 California Stormwater BMP Handbook 1 of 2 New Development and Redevelopment www.cabmphandbwks.com wks.com -82 - SD-12 Efficient Irrigation ■ Design timing and application methods of irrigation water to minimize the runoff of excess irrigation water into the storm water drainage system. ■ Group plants with similar water requirements in order to reduce excess irrigation runoff and promote surface filtration. Choose plants with low irrigation requirements(for example, native or drought tolerant species). Consider design features such as: - Using mulches(such as wood chips or bar)in planter areas without ground cover to minimize sediment in runoff Installing appropriate plant materials for the location,in accordance with amount of sunlight and climate,and use native plant materials where possible and/or as recommended by the landscape architect - Leming a vegetative barrier along the property boundary and interior watercourses,to act as a pollutant filter,where appropriate and feasible Choosing plants that minimize or eliminate the use of fertilizer or pesticides to sustain growth ■ Employ other comparable,equally effective methods to reduce irrigation water runoff. Redeveloping Existing Installations Various jurisdictional stormwater management and mitigation plans(SUSMP,WQMP,etc.) define"redevelopment"in terms of amounts of additional impervious area,increases in gross floor area and/or exterior construction,and land disturbing activities with structural or impervious surfaces. The definition of-redevelopment"must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. If the definition applies,the steps outlined under"designing new installations" above should be followed. Other Resources A Manual for the Standard Urban Stormwater Mitigation Plan(SUSMP),Los Angeles County Department of Public Works,May 2002. Model Standard Urban Storm Water Mitigation Plan(SUSMP)for San Diego County,Port of San Diego,and Cities in San Diego County,February 14,2002. Model Water Quality Management Plan(WQMP)for County of Orange,Orange County Flood Control District,and the Incorporated Cities of Orange County,Draft February 2003. Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002. 2 of 2 California Stormwater BMP Handbook January 2003 New Development and Redevelopment www.cabmphandbooks.com -83 - Storm Drain Signage SD-13 Design Objectives Maximnze Infiltration - - Provide Retention Slow Runoff Minimize Impervious land Coverage Prohmbd Dumping of Improper Materials Contain Pollutants Collect and Canvey Description Waste materials dumped into storm drain inlets can have severe impacts on receiving and ground waters. Posting notices regarding discharge prohibitions at storm drain inlets can prevent waste dumping. Storm drain signs and stencils are highly visible source controls that are typically placed directly adjacent to storm drain inlets. Approach The stencil or affixed sign contains a brief statement that prohibits dumping of improper materials into the urban runoff conveyance system. Storm drain messages have become a popular method of alerting the public about the effects of and the prohibitions against waste disposal. Suitable Applications Stencils and signs alert the public to the destination of pollutants discharged to the storm drain. Signs are appropriate in residential,commercial,and industrial areas,as well as any other area where contributions or dumping to storm drains is likely. Design Considerations Storm drain message markers or placards are recommended at all storm drain inlets within the boundary of a development project. The marker should be placed in clear sight facing toward anyone approaching the inlet from either side. All storm drain inlet locations should be identified on the development site map. Designing New Installations The following methods should be considered for inclusion in the project design and show on project plans: • Provide stenciling or labeling of all storm drain inlets and ! catch basins,constructed or modified,within the project area with prohibiti-.v language. Examples include`NO DUMPING January 2003 California Stormwater BMP Handbook 1 of 2 New Development and Redevelopment wvvw.cabm phandbooks.com -84- SD-13 Storm Drain Signage —DRAINS TO OCEAN"and/or other graphical icons to discourage illegal dumping. a Post signs with prohibitive language and/or graphical icons,which prohibit illegal dumping at public access points along channels and creeks within the project area. Note-Some local agencies have approved specific signage and/or storm drain message placards for use. Consult local agency stormwater staff to determine specific requirements for placard types and methods of application. Redeveloping Existing Installations Various jurisdictional stormwater management and mitigation plans(SUSMP,WQMP,etc.) define"redevelopment"in terms of amounts of additional impervious area,increases in gross floor area and/or exterior construction,and land disturbing activities with structural or impervious surfaces. If the project meets the definition of"redevelopment",then the requirements stated under"designing new installations"above should be included in all project design plans. Additional Information Maintenance Considerations a Legibility of markers and signs should be maintained. If required by the agency with jurisdiction over the project,the owner/operator or homeowners association should enter into a maintenance agreement with the agency or record a deed restriction upon the property title to maintain the legibility of placards or signs. Placement ■ Signage on top of curbs tends to weather and fade. a Signage on face of curbs tends to be worn by contact with vehicle tires and sweeper brooms. Supplemental Information Examples a Most MS4 programs have storm drain signage programs. Some MS4 programs will provide stencils,or arrange for volunteers to stencil storm drains as part of their outreach program. Other Resources A Manual for the Standard Urban Stormwater Mitigation Plan(SUSMP),Los Angeles County Department of Public Works,May 2002. Model Standard Urban Storm Water Mitigation Plan(SUSMP)for San Diego County,Port of San Diego,and Cities in San Diego County.February 14,2002. Model Water Quality Management Plan(WQMP)for County of Orange,Orange County Flood Control District,and the Incorporated Cities of Orange County,Draft February 2003. Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002. 2 of 2 California Stormwater BMV Handbook January 2003 New Development and Redevelopment www.cabrrq)handbooks.com -85 - Trash Storage Areas SD-32 Description Design Objectives Trash storage areas are areas where a trash receptacle(s)are Maximize Infiltration located for use as a repository for solid wastes. Stormwater Provide Retention runoff from areas where trash is stored or disposed of can be Slow Runoff polluted. In addition,loose trash and debris can be easily transported by water or wind into nearby storm drain inlets, Coverage Impervious land Co1��channels,and/or creeks. Waste handling operations that may be sources of stormwater pollution include dumpsters,litter control, Prohibit Dumping of Improper and waste piles. Materials 2 Contain Pollutants Approach Collect and Corwev This fact sheet contains details on the specific measures required to prevent or reduce pollutants in stormwater runoff associated with trash storage and handling. Preventative measures including enclosures,containment structures,and impervious pavements to mitigate spills,should be used to reduce the likelihood of contamination. Suitable Applications Appropriate applications include residential,commercial and industrial areas planned for development or redevelopment. (Detached residential single-family homes are typically excluded from this requirement.) Design Considerations Design requirements for waste handling areas are governed by Building and Dire Codes,and by current local agency ordinances and zoning requirements. The design criteria described in this fact sheet are meant to enhance and be consistent with these code and ordinance requirements. Hazardous waste should be handled in accordance with legal requirements established in Title 22,California Code of Regulation. Wastes from commercial and industrial sites are typically hauled by either public or commercial carriers that may have design or access requirements for waste storage areas. The design criteria in this fact sheet are recommendations and are not intended to be in conflict with requirements established by the waste hauler. The waste hauler should be contacted prior to the design of your site trash collection areas. Conflicts or issues should be discussed with the local agency. Designing New Installations Trash storage areas should be designed to Lonsider the follo%ving structural or treatment control BMPs: ■ Design trash container areas so that drainage from adjoining roofs and pavement is diverted around the area(s)to avoid run-on. This might include berming or grading the waste handling area to prevent run-on of stormwater. • Make sure trash container areas are screened or walled to prevent off-site transport of trash. Mg. January 2003 California Stormwater BMP Handbook 1 of 2 New Development and Redevelopment www.cabm ph and books.com -86- SD-32 Trash Storage Areas • Use lined bins or dumpsters to reduce leaking of liquid waste. ■ Provide roofs,awnings,or attached lids on all trash containers to minimize direct precipitation and prevent rainfall from entering containers. • Pave trash storage areas with an impervious surface to mitigate spills. • Do not locate storm drains in immediate vicinity of the trash storage area. ■ Post signs on all dumpsters informing users that hazardous materials are not to be disposed of therein. Redeveloping Existing Installations Various jurisdictional stormwater management and mitigation plans(SUSMP,WQMP,etc.) define"redevelopment"in terms of amounts of additional impervious area,increases in gross floor area and/or exterior construction,and land disturbing activities with structural or impervious surfaces. The definition of"redevelopment"must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. if the definition applies,the steps outlined under"designing new installations" above should he followed. Additional Information ,11uinte►tunce Considerations The integrity of structural elements that are subject to damage(i.e.,screens,covers,and signs) must be maintained by the owner/operator. Maintenance agreements between the local agency and the owner/operator may be required. Some agencies will require maintenance deed restrictions to be recorded of the property title. If required by the local agency,maintenance agreements or deed restrictions must be executed by the owner/operator before improvement plans are approved. Other Resources A Manual for the Standard Urban Stormwater Mitigation Plan(SUSMP),Los Angeles County Department of Public Works,May 2DD2. Model Standard Urban Storm Water Mitigation Plan(SUSMP)for San Diego County,Port of San Diego,and Cities in San Diego County,February 14,2002. Model Water Quality Management Plan(WQMP)for County of Orange,Orange County Flood Control District,and the Incorporated Cities of Orange County,Draft February 2003. Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002. 2 of 2 California Stormwater BMp Handbook January 2003 New Development and Redevelopment www.cabmp handbooks.cam -87- Vegetated Swale TC-30 Design Considerations ■ Tributary Area ■ Area Required �' ,� ■ Slope r�fil h ■ Water Availability Description Vegetated swales are open,shallow channels with vegetation covering the side slopes and bottom that collect and slowly Targeted Constituents convey runoff flow to downstream discharge points. They are 0 Sediment designed to treat runoff through filtering by the vegetation in the 0 Nutrients • channel,filtering through a subsoil matrix,and/or infiltration 0 Trash • into the underlying soils. Swales can be natural or manmade. 0 Metals They trap particulate pollutants(suspended solids and trace 0 Bacteria • metals),promote infiltration,and reduce the flow velocity of 0 Oil and Grease stormwater runoff. Vegetated swales can serve as part of a stormwater drainage system and can replace curbs,gutters and 0 Organics storm sewer systems. Legend(Removal Effectiveness) • how California Experience a Syr Caltrans constructed and monitored sir vegetated swales in • Medium southern California. These swales were generally effective in reducing the volume and mass of pollutants in runoff. Even in the areas where the annual rainfall was only about io inches/yr, the vegetation did not require additional irrigation. One factor that strongly affected performance was the presence of large numbers of gophers at most of the sites. The gophers created earthen mounds,destroyed vegetation,and generally reduced the effectiveness of the controls for TSS reduction. Advantages ■ If properly designed,vegetated,and operated,swales can serve as an aesthetic,potentially inexpensive urban development or roadway drainage conveyance measure with significant collateral water quality benefits. all January 2003 California Stormwater BMP Handbook 1 of 13 New Development and Redevelopment www.cabm phand books.com -88- TC-30 Vegetated Swale ■ Roadside ditches should be regarded as significant potential swale/buffer strip sites and should be utilized for this purpose whenever possible. Limitations ■ Can be difficult to avoid channelization. ■ May not be appropriate for industrial sites or locations where spills may occur ■ Grassed swales cannot treat a very large drainage area. Large areas may be divided and treated using multiple swales. • A thick vegetative cover is needed for these practices to function properly. ■ They are impractical in areas with steep topography. ■ They are not effective and may even erode when flow velocities are high,if the grass cover is not properly maintained. • In some places,their use is restricted by law: many local municipalities require curb and gutter systems in residential areas. ■ Swales are mores susceptible to failure if not properly maintained than other treatment BMPs. Design and Sizing Guidelines ■ Flow rate based design determined by local requirements or sized so that 85%of the annual runoff volume is discharged at less than the design rainfall intensity. • Swale should be designed so that the water level does not exceed 2/3rds the height of the grass or 4 inches,which ever is less,at the design treatment rate. • Longitudinal slopes should not exceed 2.5% ■ Trapezoidal channels are normally recommended but other configurations,such as parabolic,can also provide substantial water quality improvement and may be easier to mow than designs with sharp breaks in slope. ■ Swales constructed in cut are preferred,or in fill areas that are far enough from an adjacent slope to minimize the potential for gopher damage. Do not use side slopes constructed of fill,which are prone to structural damage by gophers and other burrowing animals. ■ A diverse selection of low growing,plants that thrive under the specific site,climatic,and watering conditions should be specified.Vegetation whose growing season corresponds to the wet season are preferred. Drought tolerant vegetation should be considered especially for swales that are not part of a regularly irrigated landscaped area. ■ The width of the swale should be determined using Manning's Equation using a value of 0.25 for Manning's n. 2 of 13 California Stormwater BMP Handbook January 2003 New Development and Redeveiopment www.cabmohandbooks.com -89- Vegetated Swale TC-30 Cmutruction/tnspection Considerations • Include directions in the specifications for use of appropriate fertilizer and soil amendments based on soil properties determined through testing and compared to the needs of the vegetation requirements. • Install swales at the time of the year when there is a reasonable chance of successful establishment without irrigation;however,it is recognized that rainfall in a given year may not be sufficient and temporary irrigation may be used. • If sod tiles must be used,thev should be placed so that there are no gaps between the tiles; stagger the ends of the tiles to prevent the formation of channels along the Swale or strip. • Use a roller on the sod to ensure that no air pockets form between the sod and the soil. • Where seeds are used,erosion controls will be necessary to protect seeds for at least 75 days after the fast rainfall of the season. Performance The literature suggests that vegetated swales represent a practical and potentially effective technique for controlling urban runoff quality. While limited quantitative performance data exists for vegetated swales,it is known that check dams,slight slopes,permeable soils,dense grass cover,increased contact time,and small storm events all contribute to successful pollutant removal by the Swale system. Factors decreasing the effectiveness of swales include compacted soils,short runoff contact time,large storm events,frozen ground,short grass heights,steep slopes,and high runoff velocities and discharge rates. Conventional vegetated Swale designs have achieved mixed results in removing particulate pollutants. A study performed by the Nationwide Urban Runoff Program(NURP)monitored three grass swales in the Washington,D.C.,area and found no significant improvement in urban runoff quality for the pollutants analyzed. However,the weak performance of these swales was attributed to the high flow velocities in the swales,soil compaction,steep slopes,and short grass height. Another project in Durham,NC,monitored the performance of a carefully designed artificial Swale that received runoff from a commercial parking lot.The project tracked 11 storms and concluded that particulate concentrations of heavy metals(Cu,Pb,Zn,and Cd)were reduced by approximately 50 percent. However,the Swale proved largely ineffective for removing soluble nutrients. The effectiveness of vegetated swales can be enhanced by adding check dams at approximately 17 meter(50 foot)increments along their length(See Figure 1). These dams maximize the retention time within the Swale,decrease flow velocities,and promote particulate settling. Finally,the incorporation of vegetated filter strips parallel to the top of the channel banks can help to treat sheet flows entering the Swale. Only 9 studies have been conducted on all grassed channels designed for water quality(Table 1). The data suggest relatively high removal rates for some pollutants,but negative removals for some bacteria,and fair performance for phosphorus. January 2003 California Stormwater BMP Handbook 3 of 13 New Development and Redevelopment www.cabm phand books_com -90- TC-30 Vegetated Swale Table 1 Grassed Swale pollutant removal efficiency data Removal Efficiencies(",Rcmo%al) Study l'SS TP 7N N01 Metals Bacteria T%pe altrans 2002 77 a 67 66 83-90 •33 dry swales oldberg 1993 67.8 45 - 31_4 42-62 •100 grassed channel icaltle Metro and Washington 6o 45 •25 2-16 .25 grassed channel DN-partment of Ecology 1992 Seattle Metro and Washington 83 ,a _ -2, 4�73 •25 grassed channel Department of Ecology.1992 fang ct al..1981 Bo - - - 70-80 dry Swale Dorman cl al.,1989 98 18 45 37-81 - dry swale Harper,1988 87 83 84 80 "o dry Swale Kercher et al.,1983 99 99 99 99 99 - dry swale I I arper.1988. 81 17 4o 52 37-6q wet Swale "oon.1995 67 39 - 9 -35 to 6 wet Swale While it is difficult to distinguish between different designs based on the small amount of available data,grassed channels generally have poorer removal rates than wet and dry swales, although some swales appear to export soluble phosphorus(Harper,1988;Koon,1995).It is not clear why swales export bacteria. One explanation is that bacteria thrive in the warm swale soils. Siting Criteria The suitability of a swale at a site will depend on land use,size of the area serviced,soil type, slope,imperviousness of the contributing watershed,and dimensions and slope of the swale system(Schueler et al., 1992). In general,swales can be used to serve areas of less than to acres, with slopes no greater than 5%. Use of natural topographic lows is encouraged and natural drainage courses should be regarded as significant local resources to be kept in use(Young et al., 1996). Selection Criteria(NCTCOG,1993) • Comparable performance to wet basins • Limited to treating a few acres ■ Availability of water during dry periods to maintain vegetation • Sufficient available land area Research in the Austin area indicates that vegetated controls are effective at removing pollutants even when dormant. Therefore,irrigation is not required to maintain growth during dry periods,but may be necessary only to prevent the vegetation from dying. 4 of 13 California Stormwater BMP Handbook January 2003 New Development and Redevelopment www.cabmp handbooks.com -91 - Vegetated Swale TC-30 The topography of the site should permit the design of a channel with appropriate slope and cross-sectional area. Site topography may also dictate a need for additional structural controls. Recommendations for longitudinal slopes range between 2 and 6 percent. Flatter slopes can be used,if sufficient to provide adequate conveyance. Steep slopes increase flow velocity,decrease detention time,and may require energy dissipating and grade check. Steep slopes also can be managed using a series of check dams to terrace the swale and reduce the slope to within acceptable limits. The use of check dams with swales also promotes infiltration. Additional Design Guidelines Most of the design guidelines adopted for swale design specify a minimum hydraulic residence time of 9 minutes.This criterion is based on the results of a single study conducted in Seattle, Washington(Seattle Metro and Washington Department of Ecology,1992),and is not well supported.Analysis of the data collected in that study indicates that pollutant removal at a residence time of 5 minutes was not significantly different,although there is more variability in that data. lberefore,additional research in the design criteria for swales is needed.Substantial pollutant removal has also been observed for vegetated controls designed solely for conveyance (Barrett et al, 1998);consequently,some flexibility in the design is warranted. Many design guidelines recommend that grass be frequently mowed to maintain dense coverage near the ground surface. Recent research(Colwell et al.,2000)has shown mowing frequency or grass height has little or no effect on pollutant removal. Summary of Design Recommendations t} The Swale should have a length that provides a minimum hydraulic residence time of at least 10 minutes. The maximum bottom width should not exceed 10 feet unless a di%lding berm is provided. The depth of flow should not exceed 2/3rds the height of the grass at the peak of the water quality design storm intensity. The channel slope should not exceed 2.5%. 2) A design grass height of 6 inches is recommended. 3) Regardless of the recommended detention time,the swale should be not less than too feet in length. q) The width of the swale should be determined using Manning's Equation,at the peak of the design storm,using a Manning's n of O.zS. 5) The Swale can be sized as both a treatment facility for the design storm and as a conveyance system to pass the peak hydraulic flows of the too-year storm if it is located"on-line." The side slopes should be no steeper than 3:1(H:V). 6) Roadside ditches should be regarded as significant potential swale/buffer strip sites and should be utilized for this purpose whenever possible. If flow is to be introduced through curb cuts,place pavement slightly above the elevation of the vegetated areas. Curb cuts should be at least 12 inches wide to prevent clogging. 7) Swales must be vegetated in order to provide adequate treatment of rung It is important to maximize water contact with vegetation and the soil surface. For general purposes,select fine,close-growing,water-resistant grasses. If possible, divert runoff(other than necessary irrigation)during the period of vegetation 3anuary 2003 California Stormwater BMP Handbook 5 of 13 New Development and Redevelopment www.cabmphandbooks.com -92 - TC-30 Vegetated Swale establishment. Where runoff'diversion is not possible,cover graded and seeded areas with suitable erosion control materials. Maintenance The useful life of a vegetated swale system is directly proportional to its maintenance frequency. If properly designed and regularly maintained,vegetated swales can last indefinitely.The maintenance objectives for vegetated swale systems include keeping up the hydraulic and removal efficiency of the channel and maintaining a dense,healthy grass cover. Maintenance activities should include periodic mowing(with grass never cut shorter than the design flow depth).weed control,watering during drought conditions,reseeding of bare areas, and clearing of debris and blockages. Cuttings should be removed from the channel and disposed in a local composting facility. Accumulated sediment should also be removed manually to avoid concentrated flows in the swale. The application of fertilizers and pesticides should be minimal. Another aspect of a good maintenance plan is repairing damaged areas within a channel.For example,if the channel develops ruts or holes,it should be repaired utilizing a suitable soil that is properly tamped and seeded. The grass cover should be thick;if it is not,reseed as necessary. Any standing water removed during the maintenance operation must be disposed to a sanitary sewer at an approved discharge location. Residuals(e.g.,silt,grass cuttings)must be disposed in accordance with local or State requirements. Maintenance of grassed swales mostly involves maintenance of the grass or wetland plant cover. Typical maintenance activities are summarized below: a Inspect swales at least twice annually for erosion,damage to vegetation,and sediment and debris accumulation preferably at the end of the wet season to schedule summer maintenance and before major fall runoff to be sure the Swale is ready for winter. However, additional inspection after periods of heavy runoff'is desirable. The swale should be checked for debris and litter,and areas of sediment accumulation. a Grass height and mowing frequency may not have a large impact on pollutant removal. Consequently,mowing may only be necessary once or twice a year for safety or aesthetics or to suppress weeds and woody vegetation. Trash tends to accumulate in swale areas,particularly along highways. The need for litter removal is determined through periodic inspection,but litter should always be removed prior to mowing. ■ Sediment accumulating near culverts and in channels should be removed when it builds up to 75 turn(3 in.)at any spot,or covers vegetation. ■ Regularly inspect swales for pools of standing water. Sw•ales can become a nuisance due to mosquito breeding in standing water if obstructions develop(e.g.debris accumulation, invasive vegetation)and/or if proper drainage slopes are not implemented and maintained. 6 of 13 California Stormwater BMP Handbook January 2003 New Development and Redevelopment www.cabmphandbooks.com -93 - Vegetated Swale TC-30 Cost Construction cast little data is available to estimate the difference in cost between various swale designs.One study(SWRPC,iggi)estimated the construction cost of grassed channels at approximately $0.25 per W.This price does not include design costs or contingencies. Brown and Schueler (1997)estimate these costs at approximately 32 percent of construction costs for most stormwater management practices. For swales,however,these costs would probably be significantly higher since the construction costs are so low compared with other practices.A more realistic estimate would be a total cost of approximately$o.5o per ft2,which compares favorably with other stormwater management practices. January 2003 California 5tormwater BMP Handbook 7 of 13 New Development and Redevelopment www.cabrnphandbooks.com -94- TC-30 Vegetated Swale Table 2 Swale Cost Estimate(SEWRPC, 1991) Unit Cost Total Cost Component Unit Extent Low Moderate High Low Moderate High Mobil eauon/ -xJla $107 $274 S441 $107 $274 S441 D1arlobilizallon-Light Silo Preparation Clowirp° A— 05 $2200 S3,900 $5400 $1.100 $1.900 $2700 Gtibbng° Arse 0.25 $3800 $5,200 $6,600 Saw $1.300 $1,650 General cxcavat rP. Yd' 372 $210 $370 $530 $761 $1,376 $14972 io . . ;ever and Till' Yd' 1,210 1020 $0.35 $3 50 $242 1424 $605 Site%Dewbpnlont Salva gad Togaoil Swd•and Ill Y41 1,210 $0 40 $1 00 $T oo $494 $1.210 $14936 Soda.................. Yd' 1,210 $1.20 $240 $&so $1.492 $2.904 $4,356 Subtotal - - -- - - 35.116 $9,358 S13.660 ConnngencM Swell 1 25% 25% 25% $1,279 $2.347 $3,415 Total S6.395 $11.7-35 S17075 Savca:(5 RPC.1991f Note Motozalon7oamobi¢ation raters to the organ®tion and PUnn rig involveo in oats boon mg avcgolobvoswale Swale has a bottom width of 1.0 toot,a lop w'ldlh of 10 feel with 1 3 side slopes,and a 1,000-foot length. `Area cleared=(top width-10 feet)x swale length. 'Area grubbed=(top width x swale length). 'Volurne excavated=(0.67 x top width x sw9le depth)x swale length(parabolic cross-section) Area blleo=(lop width-8(5waie depth)x Swale length(parabolic cross-section) 3(top width) Area seeded=area Geared x 0 5 a Area sodded=area cleared x 0 5 8 of 13 Califonnia SWrinwater BMP Handbook January 2003 New Development and Redevelopment www_Cabm pha ndbooks.com -95 - Vegetated Swale TC-30 Table 3 Estimated Maintenance Costs(SEWRPC, 1991) Swale 5170 (Depth and Top Width) Component unit Cost 1.5 Foot Depth.One- 3-Foot Depth,3-Fool Comment Foot Bottom Width, Bottom Width.21-Foot 10-Foot Top Width Top Width Lawn Mowing $085/i,000 hrl movang $0.14!linear foot $0 21 1.mr foot Lawn maintenance area-(lop width•10feeOx length Mow e p ht times per yea General Lawn Care So 0011,000 fFf year 5018l lingartoot $0281 sner foot lawn maintenance area=0op wdT•10 fa/U xlength Swag Debria and lithor $010 flinear foot/your $01011inaerfoot 30101If new foot - Rrnmal Gras"Reseeding with s0.301 frill 50.01/linear toot $0.01/Wner fool Area revegeraled equals 15. Mulch and Fedll7er of lawn maintenance area per year Prcgrrn Adminirration and $0 15/linear fool/yaar. $0.151 linger foot $0 151 Yngr foot Imapect iow times PIN year Sw"inspection plus$25/inspsicton Total •• $0.5Dl liner foci f 0.7511irmar foot _ January 2003 California Stortnwater BMP Handbook 9 of 13 New Development and Redevelopment w ww.ca b m p ha n d boo ks.mm -96- TC-30 Vegetated Swale Maintenance Cost Caltrans(2002)estimated the expected annual maintenance cost for a swale with a tributan area of approximately 2 ha at approximately$2,700. Since almost all maintenance consists of mowing,the cost is fundamentally a function of the mowing frequency. Unit costs developed by SEWRPC are shown in Table 3. In many cases vegetated channels would be used to convey runoff and would require periodic mowing as wen,so there may be little additional cost for the water quality component. Since essentially all the activities are related to vegetation management.no special training is required for maintenance personnel. References and Sources of Additional Information Barrett,Michael E.,Walsh,Patrick M.,Malina,Joseph F.,Jr.,Charbeneau,Randall J, 1998. "Performance of vegetative controls for treating highway runoff,"ASCE Journal of Environmental Engineering,Vol.124,No. 11,pp. 1121-1128. Brown,W.,and T.Schueler. 1997. The Economics of Stormwater BMPs in the Mid Atlantic Region. Prepared for the Chesapeake Research Consortium,Edgewater,MD,by the Center for Watershed Protection,Ellicott City,MD. Center for Watershed Protection(CWP). 1996. Design of Stormwater Filtering Systems. Prepared for the Chesapeake Research Consortium,Solomon,MD,and USEPA Region V. Chicago,IL,by the Center for Watershed Protection,Ellicott City,MD. Colwell,Shanti R.,Horner,Richard R.,and Booth,Derek B.,2000. Characterization of Performance Predictors and Evaluation of Mowing Practices in Biofiltration Swales. Report to King County Land And Water Resources Division and others by Center for Urban Water Resources Management,Department of Civil and EnAronmental Engineering, University of Washington,Seattle,WA Dorman,M.E.,J.Hartigan,R.F.Steg,and T.Quasebarth.1989.Retention,Detention and Overland Flow for Pollutant Removal From Highway Stormwater Runoff. Vol.i.FHWA/RD 89/202.Federal Highway Administration,Washington,DC. Goldberg. 1993. Dayton Avenue Swale Biofiltration Study. Seattle Engineering Department, Seattle,WA. Harper, H. 1988.Effects of Stormwater Management Systems on Groundwater Quality. Prepared for Florida Department of Environmental Regulation,Tallahassee,FL,by Environmental Research and Design,Inc.,Orlando,FL Kercher,W.C.,J.C.Landon,and R.Massarelli. 1983. Grassy swales prove cost-effective for water pollution control. Public Works, 16:53-55• Koon,J.1995. Evaluation of Water Quality Ponds and Swales in the Issaquah/East Lake Sammamish Basins.King County Surface Water Management,Seattle,WA,and Washington Department of Ecology,Olympia,WA. Metzger,M.E.,D. F.Messer,C.L.Beitia,C.M.Myers,and V. L Kramer.2o02.The Dark Side Of Stormwater Runoff Management: Disease Vectors Associated With Structural BMPs. Stormwater 3(2):24-39.Oakland,P.H. 1983. An evaluation of stormwater pollutant removal 100113 California Stormwater SMP Handbook January 2003 New Development and Redevelopment www.cabmphandbooks.com -97- Vegetated Swale TC-30 through grassed swale treatment. In Proceedings of the International Symposium of Urban Hydrology,Hydraulics and Sediment Control,Lexington,KY.pp. 173-182. Occoquan Watershed Monitoring Laboratory. 1983. Final Report: Metropolitan Washington Urban Runoff Project. Prepared for the Metropolitan Washington Council of Governments, Washington,DC,by the Occoquan Watershed Monitoring Laboratory,Manassas,VA. Pitt,R.,and J.McLean. t986. Toronto Area Watershed Management Strategy Stucht: Humber RiLwr Pilot Watershed Project. Ontario Ministry of Environment,Toronto,ON. Schueler,T. 1997. Comparative Pollutant Removal Capability of Urban BMPs:A reanalysis. Watershed Protection Techniques 2(2):379-383• Seattle Metro and Washington Department of Ecology. 1992. Biofdtration Swale Performance: Recommendations and Design Considerations.Publication No.657.Water Pollution Control Department,Seattle,WA. Southeastern Wisconsin Regional Planning Commission(SWRPC).tggl. Costs of Urban Nonpoint Source Water Pollution Control Measures.Technical report no.31. Southeastern Wisconsin Regional Planning Commission,Waukesha.WL U.S.EPA, 1999,Stormwater Fact Sheet: Vegetated Swales,Report*832-F-99-oo6 http://w-%rw.epa.gov/owm/mtb/ve sg.wale.pdf,Office of Water,Washington DC. Wang,T., D.Spyridakis, B.Mar,and R. Horner.ig8t. Transport,Deposition and Control of Heavy Metals in Highway Runoff.FHWA-WA-RD-39-10. University of Washington, Department of Civil Engineering,Seattle,WA. Washington State Department of Transportation,1995,Highway Runoff Manual,Washington State Department of Transportation,Olympia,Washington. Welborn,C.,and J.Veenhuis. 1987. Effects of Runoff Controls on the Quantity and Quality of Urban Runoff in Two Locations in Austin,7X. USGS Water Resources Investigations Report No.87-4004.U.S.Geological Survey,Reston,VA. Yousef,Y.,M.Wanielista,H.Harper,D. Pearce,and R.Tolbert. 1985. Best Management Practices: Removal of Highway Contaminants By Roadside Swales. University of Central Florida and Florida Department of Transportation,Orlando,FL. Yu,S.,S.Barnes,and V.Gerde. 1993. Testing of Best Management Practices for Controlling Highway Runoff. FHWA/VA-93-R16. Virginia Transportation Research Council, Charlottesville,VA. Information Resources Maryland Department of the Environment(MDE).2000. Maryland Stormwater Design Manual. www.mde.state.md_tis.lenvironment/wma/stormwatermannal. Accessed May 22, 2001. Reeves,E. 1994. Performance and Condition of Biofdters in the Pacific Northwest. Watershed Protection Techniques 1(3):117-119. January 2003 California Stormwater BMP Handbook 11 of 13 New Development and Redevelopment www.cabrnphandbooks.com -98- TC-30 Vegetated Swale Seattle Metro and Washington Department of Ecology. 1992.Biofltration Swale Performance. Recommendations and Design Considerations.Publication No.657.Seattle Metro and Washington Department of Ecology,Olympia,WA. USEPA 1995.Guidance Specibing Management Measures for Sources of Nonpoint Pollution in Coastal Waters.EPA-84o-B-92-002.U.S.En%lronmental Protection Agency,Office of Water. Washington,DC. Watershed Management Institute(WMI). 1997.Operation,Maintenance,and Management of Stormwater Management Systems.Prepared for U.S.Environmental Protection Agency.Office of Water.Washington,DC,by the Watershed Management Institute,Ingleside,MD. 12 of 13 California Stormwater BMV Handbook January 2003 New Development and Redevelopment www.cabmphandbooks.com -99- Vegetated Swale TC-30 ProYtd(ll+ftiNl uI C r•n(Y(ctsrn of awak watt cbnA Jam. fMll�{C(IIMt t , N' q 7.t NOUAIon � •LargM of•�aN Imyo•tndmaN ana par chocM Aam iK.i INI nuw(w•rm+l t w :d•w u4 Im 1.nnnhw ntr,m. OY •pµANd chock dam +( •8olaom alp+d 6*41a MAI W •Top wkith of chock dares or. Wa •804hm WUM of ct" can m 1—.Raft d Nonto,MI to Ywtical chorMa in*.Al.W.slnpc dth) January 2003 California Stormwater BMV Handbook 13 of 13 New Development and Redevelopment www,cat3m phandbmks.com - 100-