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HomeMy WebLinkAboutCDP 04-08; Lexus Carlsbad Service Office; Water Quality Technical Report; 2004-06-16WATER QUALITY TECHNICAL REPORT FOR Proposed Remodel of Service Department for Lexus Carlsbad City of Carlsbad CDP 04-08 Prepared for: Lexus Carlsbad Stellar Properties, LLC. 5424 Paseo Del Norte Carlsbad, CA 92008 Prepare By: biHA, Inc. land planning, civil engineering, suiveying 5115 Avenida Encinas, Suite L Carlsbad, CA 92008-4387 (760) 931-8700 April 12,2004 Revised on June 16, 2004 W.O. 591-0804-601 hi I TABLE OF CONTENTS INTRODUCTION 1 Project Description 1.1 Hydrologic Unit Contribution 2 WATER QUALITY ENVIRONMENT 2.1 Beneficial Use 2.1.1 Inland Surface Waters 2.1.2 Groimd Waters 2.2 303 (d) Status 3 CHARACTERIZATION OF PROJECT RUNOFF 3.1 Existing and Post-Construction Drainage 3.2 Post-Construction Discharge 3.3 Soil Characteristics 4 MITIGATION MEASURES TO PROTECT WATER QUALITY 4.1 Construction BMPs 4.2 Post-construction BMPs 4.2.1 Site Design BMPs 4.2.2 Source Design BMPs 4.2.3 Treatment Control BMPs 4.2.3.1 Drainage Insert 4.2.3.1.1 Design Criteria 5 OPERATION AND MAINTENANCE PROGRAM 6 PERMANENT TREATMENT BMP MAINTENANCE MECHANISMS 7 SUMMARY/CONCLUSION 8 REFERENCES ATTACHMENTS A. Location Map B. Water Quality Exhibit C. Water Quality Standards inventory Database D. "Flow Base" Calculation E. Checklists and References INTRODUCTION A Water Quality Technical Report (WQTR) is required under the City of Carlsbad's Standard Urban Storm Mitigation Plan for project that qualifies as "Priority Project". The purpose of this WQTR is to address the water quahty impacts from the proposed Remodel of Service Department for Lexus Carlsbad. Best Management Practices (BMPs) will be utihzed to provide a long-term solution to water quality. This WQTR is intended to ensure the effectiveness of the BMPs through maintenance that is based on long-term planning. The WQTR is subject to revisions as needed by the engineer. 1.0 Project Description This is a Water Quahty Technical Report (WQTR) for the proposed Remodel of Service Department for Lexus Carlsbad. Lexus Carlsbad is in the City of Carlsbad, part of the Car Country of Carlsbad. This 4.7 acre site is on the east side of Paseo Del Norte, and is between Cannon Road and Car County Drive (see the inserted Vicinity Map and Thomas Brothers map). The site is currently used as the automobile sales and service department for Lexus Carlsbad. The project site consists of 6 existing Buil(Jings with approximately 300 parking staUs and associated driveways. The Project proposes an addition to "Building 6" and a canopy between "Building 6" and "Building 7". The Project also proposes the retrofitting of existing catch Basins with filter inserts. 1.1 Hydrologic Unit Contribution The project falls withm the Encinas Hydrologic Area (904.40) which is a part of the Carlsbad Hydrologic Unit, Hydrologic Unit Basin Number 904. The total watershed size for Carlsbad Hydrologic Basin is 210 square miles or 134,400 acres, of which the site is composed of 4.7 acres, or 0.0035 percent. 2.0 WATER QUALITY ENVIRONMENT 2.1 Beneficial Uses The beneficial uses for the hydrologic units are included in the following tables. These tables have been extracted fi-om the Water Quahty Control Plan for the San Diego Basin. MUN - Municipal and Domestic Supply: Includes uses of water for conmiunity, mihtary, or individual water supply systems including, but not limited to, drinking water supply. The "+" indicate that the water body has been exempted by the Regional Board from the municipal use designation under terms and conditions of State Board Resolution No. 88-63, Source of Drinking Water Pohcy. AGR - Agricultural Supply: Includes uses of water for farming, horticulture, or ranchmg including, but not limited to, urigation, stock watering, or support of vegetation for range grazing. IND - Industrial Service Supply: Includes uses of water for industrial activities that do not depend primarily on water quality including, but not limited to, mining, coohng water supply, hydrauhc conveyance, gravel washmg, fire protection, or oil well re-pressurization. RECl - Contact Recreation: Includes uses of water for recreational activities involving body contact with water, where ingestion of water is reasonably possible. These uses include, but are not hmited to, swimming, wading, water-skiing, skin and scuba diving, surfing, white water activities, fishing, or use of natural hot springs. REC2 - Non-Contact Recreation: Includes the uses of water for recreational involving proximity to water, but not normally mvolving body contact with water, where ingestion of water is reasonably possible. These uses include, but are not limited to, picnicking, sunbathing, hiking, camping, boating, tide pool and marine life study, hunting, sightseemg, or aesthetic enjoyment in conjunction with the above activities. COMM - Commercial and Sport Fishing: Includes the use of water for commercial or recreational coUection of fish, shellfish, or other organisms including, but not limited to, uses involving organisms intended for human consumption or bait purposes. AQUA - Aquaculture: Includes the uses of water for aquaculture or mariculture operations including, but not limited to, propagation, cultivation, maintenance, or harvesting of aquatic plants and animals for human consumption or bait purposes. EST - Estuarine Habitat: Includes uses of water that support estuarine ecosystems including, but not limited to, preservation or enhancement of estuarine habitats, vegetation, fish, shellfish, or wildlife (e.g., estuarine mammals, waterfowl, shorebirds). MAR - Marine Habitat: Includes uses of water that support marine ecosystems including, but not hmited to, preservation or enhancement of marine habitats, vegetation such as kelp, fish, shellfish, or wildlife (e.g., marine mammals, shorebirds). MIGR - Migration of Aquatic Organisms: Includes uses of water that support habitats necessary for migration, acclunatization between fresh and salt water, or other temporary activities by aquatic organisms, such as anadromous fish. SHELL - Shellfish Harvesting: Includes uses of water that support habitats suitable for the collection of filter-feeding shellfish (e.g., clams, oysters and mussels) for human consumption, commercial, or sport purposes. WARM - Warm Freshwater Habitat: Includes uses of water that support warm water ecosystems mcluding, but not hmited to, preservation or enhancement of aquatic habitats, vegetation, fish or wildlife, including invertebrates. WILD - Wildlife Habitat: Includes uses of water that support warm water ecosystems including, but not limited to, preservation and enhancement of terrestrial habitats, vegetation, wildhfe, (e.g., mammals, birds, reptiles, amphibians, invertebrates), or wildlife water and foot sources. RARE - Rare, Threatened, or Endangered Species: Includes uses of water that support habitats necessary, at least in part, for the survival and successful maintenance of plant or animal species established under state or federal law as rare, threatened or endangered. 2.1.1 Inland Surface Waters Inland Surface waters have the following beneficial uses as shown on Table 2-2 of Water Quality Control Plan for the San Diego Basin (9). Table 2-2 Beneficial Uses for Inland Surface Waters Hydrologic Unit Number Mun xs a Reel Rec2 Warm Wild Rare 904.40 Canyon de las Encinas + 0 X X X + = Excepted from Municipal X = Existing Beneficial Use 0 = Potential Beneficial Use Table 2-2 Beneficial Uses for Inland Surface Waters 2.1.2 Groundwaters Ground waters have the following beneficial uses as shown on Table 2-5 of Water Quahty Control Plan for the San Diego Basin (9). Table 2-5 Beneficial Uses for Inland Surface Waters Hydrologic Unit Number Mun T3 C 904.40 Encinas + + = Excepted from Municipal X = Existing Beneficial Use 0 = Potential Beneficial Use 2.2 303(d) Status According 2002 CWA Section 303(d) List of Water Quahty Limited Segment published by the State Water Resource Control Board, Agua Hedionda Lagoon (Hydrologic Unit - 904.310) is an impaired water body that is associated with this project. Agua Hedionda Lagoon is impaired by High Coliform Count and Sedimentation/ Siltation. 3. CHARACTERIZATION OF PROJECT RUNOFF 3.1 Existing and Post-Construction Drainage Since the propose project will not alter the drainage pattem or land use, a hydrology report is not needed for this project. However, a "Flow based" calculation has been done for this report. Flow-based BMPs shall be designed to mitigate (infiltration, filter, or treat) the maximum flow rate of runoff produced from a rainfall intensity of 0.2 mch of rainfaU per hour for each hour of a storm event. 3.2 Post-Construction Expected Discharges There is no sampling data avaUable for the existing site condition. However, the foUowmg constituents listed in Table 3.2 below are commonly found on simUar project: Table 3.2 - PoUutants from the Proposed Remodel of Service Department for Lexus Carlsbad General Pollutants Categories Project Categories Sediment Nutrients Heavy Metals Organic Compounds Trash & Debris Oxygen Demanding Substances Oil & Grease Bacteria & Viruses Pesticides Automotive Repair X X X X Shop (4) (5) Parking Lot P(l) P(l) X X P(l) X P(l) X = Anticipated P = Potential (1) = A potential poUutant if landscape exists on-site (no landscaping wUl be added to this project). (4) = Including petroleum hydrocarbons (5) = Including solvents 33 Soil Characteristic The project area consists of SoU Group "C". SoUs within SoU Group "C" have slow mfUtration rate when thoroughly wetted; chiefly soUs that have a layer impedmg downward movement of water, or moderately fine to fine textured soUs that have a slow infUtration rate. Rate of water transmission is slow. 4.0 M ITIGATION MEASURE TO PROTECT WATER QUALITY To address water quality, BMPs wiU be implemented during construction and post- construction. 4.1 Construction BMPs A detailed description of the construction BMPs has been developed as a part of the Storm Water PoUution Prevention Plan (SWPPP). Construction BMPs for this project wUl be constructed, and maintained so as to comply with aU apphcable ordinances and guidance documents. 4.2 Post-construction BMPs Pollutants of concern as noted in Section 3 wUl be addressed through three types of BMPs. These types of BMPs are Site Design BMPs, Source Control BMPs, and Treatment Control BMPs. The Proposed Remodel of Service Department for Lexus Carlsbad is a priority project. Storm Water BMPs requirements are as foUows: 4.2.1 Site Design BMPs Maintain Pre-Development RainfaU Runoff Characteristics This project will not alter the drainage pattem or land use. This project wiU not increase Post-construction runoff. 4.2.2 Source Control BMPs Provide concrete stamping, porcelain tile, insert permanent marking or equivalent as approved by the City of Carisbad, for all storm water conveyance system inlets and catch basins with-in the project area with prohibitive language (e.g., "No Dumping -1 Live Downstream"), satisfactoiy to the City Engineer. 4.2.3 Treatment Control BMPs The following treatment control BMPs wiU be implemented to address water quality: Retrofitting Existing Catch Basins with Filter Inserts 4.2.3.1 Drainage Inserts (This information is derived from the Los Angeles County SUSMP) A catch basin insert is any devise that can be inserted into an existing catch basin design to provide some level of runoff contaminant removal. Currently, there are many different catch basin insert models available, with apphcations ranging from trash and debris removal to carbon absorption of aliphatic and aromatic hydrocarbons and heavy metals removal. The most frequent application for catch basin inserts is for reduction of sediment, oil, and grease levels in stormwater runoff. These catch basin insets should also have an overflow outlet, through which water exceeding the treatment capacity can escape without flooding the adjacent area. 4.2.3.1.1 Design Criteria Flow-based BMPs shall be designed to mitigate (infiltrate, filter, or treat) the maximum flow rate of runoff produced from a rainfaU intensity of 0.2 inch of rainfall per hour for each hour of a storm event. 5.0 OPERATION AND MAINTENANCE PROGRAM The operation and maintenance requirement (Appendix H Estimated O&M Costs for BMP Project from County of San Diego Stormwater Manual) for each type of BMP is as follows: Drain Inlet Inserts Routine Action Maintenance Indicator Field Measurement Measurement Frequency Maintenance Activity Site-Specific Requirement Cost Inspect for debris/trash Sufficient debris/trash that could interfere with proper flinctioning of insert. Visual observation Twice a year $0 Before and once during each target 2 storm (0.25 in) event Remove and properly dispose of debris/trash. Target completion period while onsite conducting inspection. $785.34 Oil and grease removal Absorbent granules dark gray, or darker, or unit clogged with sediment. Visual observation Atthe end of each target 2 storm (0.25 in) event Replace filter adsorbent within 10 working days. Characterize and properly dispose spent media prior to wet season $84.20 Inspection for structural integrity Broken or otherwise damage insert Visual Observation twice per year in October and May. Replace insert or immediately consult vendor to develop course of action, effect repairs within 10 working days None $87.26 Annual renewal of medium End of wet season, April 30 None Annuall y, in May Remove, characterize, and properly dispose of media. Replace media before Oct. 1 None $223.54 Total $1183.4 6.0 Permanent Treatment BMP Maintenance Mechanisms This project will enters into a contract with the City obliging the owner of the project to maintain, repair and replace the storm water BMP as necessary into perpetuity. Security may be required. 7.0 SUMMARY/CONCLUSIONS The expected poUutants on this project are heavy metals, organic compounds, trash "& debris, and oil & grease. No adverse effects wUl impact the downstream properties due to storm water runoff Construction BMPs, such as gravel bags will reduce potential pollutants discharge during construction. Permanent BMPs, such as retrofitting of existing catch basins with filter inserts will minimize potential post construction pollutants from entering the waterways. The combination of proposed construction and post-construction BMPs will reduce, to the maximum extent practicable, the expected pollutants and wiU not adversely impact the beneficial uses or water quahty of the receiving waters. 8.0 REFERENCE Water Quality Control Plan for the San Diego Basin (9) Califomia Regional Water Quality Control Board, San Diego Region, September 8,1994 County of San Diego, Standard Urban Storm Water Mitigation Plan for Land Development and Pubhc Improvement Projects, Febmary 2003 California Stormwater Best Management Practice Handbook, Municipal, March 1993 2002 CWA Section 303(d) List of Water Quahty Limited Segment, February 2003 City of Carisbad, Storm Water Standard, April 2003 ATTACHMENT "A" LOCATIONMAP VICINITYMAF NOT TO SCALE CARLSBAD STATE •—I BEACH- ..L TT 1126 SOUTH --CARLSBAD.^ STATE BEACH 1 kiiioiM vr • 2 maa. m 3 msm CT ^jUDDBI M MAP Smiles 1 in. - 2900 ft. CO o o ATTACHMENT "B" WATER QUALITY EXHIBIT ATTACHMENT «C" WATER QUALITY STANDARD INVENTORY DATABASE South Oceanside MijHiNroN /ir, Mlr, T •• i-?.*Rt\\esmor(d peq J atari aka,, _ JSan Marcfl KEY TO REGION i i .Water Tain .fater-/ V ) i xl '1 ,<>^=?>%1 \ ; j /; Rancti 1 : il-WT' -^fl'fei^rvV-K:!*JB-Jo'la Valley/—. V,-^ —1._ ._Yi4_:,_><r.., BUCK MTN ! Cems. •y7 V Substa 'ISSi.i^i/^ I TW»^ « • sVVOOOSON MOUN > LoAkout tower cr' ^89 IWVIP r^y/ ; I fi°--^P*ruNA.^Tw; J T»ON U^N®(L ()!f "/.s/s^ —Jill, Quarri -SjEucaryptusT; CONTROL BOARD Missio. Beach Water Quality Standards Inventory Database Page 1 of4 Water Quality Standards Inventory Database Click on the links below to searcli for another waterbody. Search by Beneficial Uses .Search by Keyword Search by SWRCB Region Sejirch.by_Caitra!js_Dj5^^^^ Search by Cpitrity Click on the links below to view water quality parameters for Canyon de las Encinas. Bcjneilcial.Uscs Water Qii.iljty Objcctivps Water Quality Nairative C;onstituenLs Water QujiJilv Niuiicric Critena Watci: Qua I ity Bacteria, Criteria Click on the links below to view comments and corrections logged or to navigate to the comments and corrections input page. ConmKIJte.and CpjifictigiK^ CoiiMIien.is.aad.Co.rrccli.pnsJn^^ Canyon de las Encinas Water Quality Control Board Region: Click on the region number for a list of waterbodies and reported hydrologic units in that region. 9 Hydrologic Units: Click on the reported hydrologic unit for a list of waterbodies in that unit. Reported Hydrologic Units Published Hydrologic Units Hydrologic Units: Click on the reported hydrologic unit for a list of waterbodies in that unit. 904.4 904.4 Caltrans District: Click on the Caltrans district for a list of waterbodies and reported hydrologic units in that district. .11 Counties: Click on the reported county name for a Ust of waterbodies and reported hydrologic units in that county. *Please nole lhal reported and published counties are ns,socialed with hydrologic unit, nol waterbody. Reported Counties j Published Counties SAN DIEGO SAN DIEGO 1 Location Map Watershed Map Geospatial Waterbody System Assessment Data CANYON DE LAS ENCINAS (Includes 305(b) and 303(d) DeteiTninations) 1 Waterbody Beneficial Uses | RWQCB Beneficial Use |CIick on the beneficial use for the beneficial use code and description. Use Status j Potential or Existing | 1 http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3705 4/6/2004 Water Quality Standards Inventory Database Page 2 of4 [Wciter Contact Recreation |Potential j |Non-Contact Water Recreation jExisting | Warm Freshwater Habitat jExisting | 1 Wildlife Habitat |Existing | Water Quality Objectives Waterbody Reach Beneficial Use Constituent Constituent Concentration Constituent Units Constituent Details Constituent Comments ^NoWQOs Available Water Quality Narrative Constituents Constituent Name Constituent Description iBiostimuiatoi-y jinland suiface waters, bays and estuaries and coastal lagoon waters shall not contain biostimulatory ISubstanccs Isiibstances in concentrations that promote aquatic growth to the extent that such growths cause nuisance lor adversely affect beneficial uses. jColor IWaters shall be free of coloration that causes nuisance or adversely affects beneficial uses.The natural Icolor offish, shelliish or other resources in inland surface waters, coastal lagoon or bay and estuary [shall not be impaired. DO iThe dissolved oxygen concentration in ocean waters shall not at any time be depressed more than 10 jpercent from that which occurs naturally, as the lesult of the discharge of oxygen demanding waste Imaterials. iFloating IWaters shall not contain floating material, including solids, liquids, foams, and scum in concentrations I Material jwhich cause nuisance or adversely affect beneficial uses. jOil and Grease IWaters shall not contain oils, greases, waxes, or other materials in concentrations which result in a jvisible film or coating on the surface of the water or on objects in the water, or which cause nuisance or [which otheiwise adversely affect beneficial uses. pH iThe pH value .shall not be changed at any time more than 0.2 pH units from that which occurs jnaturally.Changes in normal ambient pH levels shall not exceed 0.2 units in waters with designated jmarine (MAR), or estuarine (EST), or saline (SAL) beneficial uses. Changes in normal ainbientpH Jlevels shall not exceed 0.5 units in fi'esh waters with designated cold fi-eshwater habitat (COLD) or jwarm freshwater habitat (WARM) beneficial uses. In bays and estuaries the pH shall not be depressed Ibelow 7.0 nor i-aised above 9.0. In inland surface waters die pH shall not be depressed below 6.5 nor Iraised above 8.5. jRadioaclivity iRadionuclides shall not be present in concentrations that ai^e deleterious to human, plant, aniinal, or laquatic life nor that result in the accumulation of radionuclides in the food web to an extent that [presents a hazaixi to human, plant, animal or aquatic life. ISediment iThe suspended seditnent load and suspended sediment discharge rate of surface watei s shall not be [altered in such a manner as to cause nuisance or adversely affect beneficial uses. jSuspended [Waters shall not contain suspended and setdable solids in conceati^ations of solids that cause nuisance ISolids [or adversely affect beneficial uses. [Toxicity J AII waters shall be maintained free of toxic substances in concentrations that are toxic to, or that [produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with Ithis objective will be determined by use of indicator oi'ganisms, analyses of species diversi ty, Ipopulation density, growth anomalies, bioassays of appropriate duration, or other appropriate methods las specified by the Regional Board. The survival of aquatic life in surface waters subjected to a waste Idischarge or other controllable water quality facloi-s, shall not be less than that for the same water body lin areas unaffected by the waste discharge or, when necessary, for other control water that is consistent jwith requirements specified in US EPA. State Water Resources Control Board. As a minimum, jcompliance with diis objective as stated in the previous sentence shall be evaluated with a 96-hour [acute bioassay. In addition, effluent limits based upon acute bioassays of effluents will be presciibed http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3705 4/6/2004 Water Quality Standards Inventory Database Page 3 of 4 where appropriate, additional numerical receiving water objectives for specific toxicants will be established as sufficient data become available, and source control of toxic substances will be encouraged. Temperature The natural receiving water temperatui-e of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses. At no time or place shall the temperature of any COLD water be increased more than 5F above tlie natural receiving water temperaUire. Taste and Odor Waters shall not contain taste or odor producing substances at concenti'ations which cause a nuisance or adversely affect beneficial uses. The namral taste and odor of fish, shellfish or other Regional water resources used for human consumption Shall not be impaired in inland surface waters and bays and estuaries. [Turbidity Waters shall be free of changes in mrbidity that cause nuisance or adversely affect beneficial uses. Water Quality Numeric Criteria Beneficial Use Numeric Constituent Name Numeric Constituent Detail Numeric Constituent Maximum Numeric Constituent Units Numeric Constituent Comments Numeric Constituent Reference WARM Dissolved Oxygen --5 mg/L Water Quality Ammonia Criteria Beneficial Use Constituent Name Constituent pH Constituent Temperature Constituent Time Duration Constituent Concentration Constituent Units REC] Ammonia as N ---0.025 mg/L REC2 Ammonia as N ---0.025 mg/L WARM Ammonia as N ---0.025 mg/L WILD Aimnonia as N ---0.025 mg/L Water Quality Bacteria Criteria Beneficial Use Constituent Name Constituent Concentration Details Constituent Concentration Constituent Units Constituent Comments Constituent Reference RECl Fecal Coliform Log Mean-10% of Samples for 30 day 400 Count per 100 ml Log mean value. Based on more than 10 percent of total samples during any 30-day period. RECl Fecal Coliform Log Mean-5 Samples for 30 day 200 Comit per 100 ml Log mean value. Based on a minimum of not less than five samples for any 30-day period. REC2 Fecal Colifoi-m Avei^age-10% of Samples for 30 day 4000 Count per 100 ml Avei-age value. Based on more than 10 percent of total samples during any 30-day period. REC2 Fecal CoUform Average-for 30 day 2000 Count per 100 ml Average value. Based on samples for a 30-day period. http://endeavor.des.ucdavis.edu/wqsid/waterbodY.asp?wb fkev=3705 4/6/2004 Water Quality Standards Inventory Database Page 4 of 4 Comments Commienits Click above to go to the Comments input page. "No Comments AvaUable Jgi^ © Information Center for the Environment l55» info@ice.ucdavis.edu j Search | Notices | WQSID Home http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp?wb_fkey=3705 4/6/2004 Water Quality Standards Inventory Database Page 1 of3 Water Quality Standards Inventory Database Click on the links below to search for another waterbody. Search by Beneficial Uses Search by Keyword Search by SWRCB Rci-ioii Searcti by Caltran5.,Di,>itrict Search .by CpjjrUy Click on the links below to view water quality parameters for Encinas. Beijcficial Uses Water Qu a I i ty Obj ceti yes Waler Quality Narrative Constituents Waler Qiiality Numeric Criteria Waler^Qiiality Bacteria Crijejia Click on the links below to view comments and corrections logged or to navigate to the comments and corrections input page. Comments. ajidCijoB^^^^^ Co!lilT!.e.niiai!d Cprrgetions Encinas Water Quality Control Board Region: Click on the region number for a list of waterbodies and reported hydrologic imits in that region. Hydrologic Units: Click on the reported hydrologic tmit for a list of waterbodies in that tmit. 1 Reported jl Published 1 Hydrologic Units | Hydrologic Units Hydrologic Units: Click on the reported hydrologic tmit for a list of waterbodies in that tmit. 904.4 1 904.4 Caltrans District: Click on the Caltrans district for a list of waterbodies and reported hydrologic imits in that district. 11 Counties: Click on the reported county name for a list of waterbodies and reported hydrologic units in that county. *Plctisc note that reported and published counties are a.ssociaicd with hydrologic unit, nol waterbody. Reported Counties ^ Published Counties SAN DIEGO SAN DIEGO 1 Location Map Watershed Map Waterbody Beneficial Uses RWQCB Beneficial Use Click on the beneficial use for the beneficial use code and description. Use Status [[Potential or Existing *No Beneficial Uses Reported in Database http://endeavor.des.ucda vis.edu/wqsid/waterbody.asp ?wb_fkey=3706 4/6/2004 Water Quality Standards Inventory Database Page 2 of3 Water Quality Objectives Waterbody Reach Beneficial Use Constituent Constituent Concentration Constituent Units Constituent Details Constituent Comments NA ALL Boron 0.75 mg/L - NA ALL Chloride 250 mg/L - NA ALL Color 20 Units - NA ALL F 1 mg/L - NA ALL Iron 0.3 mg/L - NA ALL Manganese 0.05 mg/L - NA ALL MBAS 0.5 mg/L - NA ALL Sodium 60 mg/L - NA ALL Sulfate 250 mg/L - NA ALL TDS 500 mg/L - NA ALL Turbidity 20 NTU - Water Quality Narrative Constituents i Constituent Name Constituent Description *No Narrative Criteria Available Water Quality Numeric Criteria Beneficial Use Numeric Constituent Name Numeric Constituent Detail Numeric Constituent Maximum Numeric Constituent Units Numeric Constituent Comments Numeric Constituent Reference *No Numeric Criteria Available Water Quality Ammonia Criteria Beneficial Constituent Constituent Constituent Constituent Time Constituent Constituent Use Name pH Temperature Duration Concentration Units No NH3 Criteria Available Water Quality Bacteria Criteria Beneficial Use Constituent Name Constituent Concentration Details Constituent Concentration Constituent Units Constituent Comments Constituent Reference *No Bacteria Criteria Available Comments Comments Click above to go to the Comments input page. *No Comments Available http://endeavor.des.ucdavis.edu/wqsid/waterbody .asp?wb_fkey=3706 4/6/2004 Water Quality Standards Inventory Database Page 3 of3 © Information Center for the Environment ij7f0@ice.ucdavis.edu \ Search | Notices | WQSID Home ""^'^ http://endeavor.des.ucdavis.edu/wqsid/waterbody.asp ?wb_fkey=3706 4/6/2004 ATTACHMENT "D" "FLOW BASE" CALCULATION 1!^ ATTACHMENT "E" CHECKLISTS & REFERENCES storm Water Standards 4/03/03 VI. RESOURCES & REFERENCES APPENDIX A STORM WATER REQUIREMENTS APPLICABILITY CHECKLIST Complete Sections 1 and 2 of the following checklist to determine your project's permanent and construction storm water best management practices requirements. This form must be completed and submitted with your permit application. Section 1. Permanent Storm Water BMP Requirements: If any answers to Part A are answered "Yes," your project is subject to the "Priority Project Permanent Storm Water BMP Requirements," and "Standard Permanent Storm Water BMP Requirements" in Section III, "Permanent Storm Water BMP Selection Procedure" in the Stom? Water Standards manual. If all answers to Part A are "No," and any answers to Part B are "Yes," your project is only subject to the "Standard Permanent Storm Water BMP Requirements". If every question in Part A and B is answered "No," your project is exempt from permanent storm water requirements. Part A: Determme Priority Project Permanent Storm Water BMP Requirements Does the project meet the definition of one or more of the priority project categories?* Yes No 1. Detached residential development of 10 or more units X 2. Attached residential development of 10 or more units K 3. Commercial development greater than 100,000 square feet V 4. Automotive repair shop 5. Restaurant 6. Steep hillside development greater than 5,000 square feet 7. Project discharging to receiving waters within Environmentally Sensitive Areas X 8. Parking lots greater than or equal to 5,000 ft'' or with at least 15 parking spaces, and potentially exposed to urban runoff X 9. Streets, roads, highways, and freeways which would create a new paved surface that is 5,000 square feet or qreater K * Refer to the definitions section in the Storm Water Standards for expanded definitions of the priority project categories. Limited Exclusion: Trenching and resurfacing work associated with utility projects are not considered priority projects. Parking lots, buildings and other structures associated with utility projects are priority projects if one or more of the criteria in Part A is met. If all answers to Part A are "No", continue to Part B. 30 Storm Water Standards 4/03/03 Does the project propose: Yes No 1. New impervious areas, such as rooftops, roads, parking lots, driveways, paths and sidewalks? 2. New pervious landscape areas and irrigation systems? X 3. Pemianent structures within 100 feet of any natural water body? f{ 4. Trash storage areas? K 5. Liquid or solid material loading and unloading areas? 6. Vehicle or equipment fueling, washing, or maintenance areas? 7. Require a General NPDES Permit for Storm Water Discharges Associated with Industrial Activities (Except construction)?* X 8. Commercial or industrial waste handling or storage, excluding typical office or household waste? K 9. Any grading or ground disturbance during construction? 10. Any new storm drains, or alteration to existing storm drains? K *To find out if your project is required to obtain an individual General NPDES Permit for Storm Water Discharges Associated with Industrial Activities, visit the State Water Resources Control Board web site at, www.swrcb.ca.gov/stormwtr/industrial.html Section 2. Construction Storm Water BMP Requirements: If the answer to question 1 of Part C is answered "Yes," your project is subject to Section IV, "Construction Storm Water BMP Performance Standards," and must prepare a Storm Water Pollution Prevention Plan (SWPPP). If the answer to question 1 is "No," but the answer to any of the remaining questions is "Yes," your project is subject to Section IV, "Construction Storm Water BMP Performance Standards," and must prepare a Water Pollution Control Plan (WPCP). If every question in Part C is answered "No," your project is exempt from any construction storm water BMP requirements. If any of the answers to the questions in Part C are "Yes," complete the construction site prioritization in Part D, below. Part C: Determine Construction Phase Storm Water Requirements Would the project meet any of these criteria during construction? Yes No 1. Is the project subject to California's statewide General NPDES Permit for Storm Water Discharges Associated With Construction Activities? X 2. Does the project propose grading or soil disturbance? 3. Would storm water or urban runoff have the potential to contact any portion of the construction area, including washing and staging areas? X 4. Would the project use any construction materials that could negatively affect water quality if discharged from the site (such as, paints, solvents, concrete, and stucco)? X 31 storm Water Standards 4/03/03 Part D: Determine Construction Site Priority In accordance with the Municipal Permit, each construction site with construction storm water BMP requirements must be designated with a priority: high, medium or low. This prioritization must be completed with this form, noted on the plans, and included in the SWPPP or WPCP. Indicate the project's priority in one of the check boxes using the criteria below, and existing and surrounding conditions of the project, the type of activities necessary to complete the construction and any other extenuating circumstances that may pose a threat to water quality. The City reserves the right to adjust the priority of the projects both before and during construction. [Note: The construction priority does NOT change construction BMP requirements that apply to projects; all construction BMP requirements must be identified on a case-by-case basis. The construction priority does affect the frequency of inspections that will be conducted by City staff. See Section IV. 1 for more details on construction BMP requirements.] • A) High Priority 1) Projects where the site is 50 acres or more and g'rading will occur during the rainy season 2) Projects 5 acres or more. 3) Projects 5 acres or more within or directly adjacent to or discharging directly to a coastal lagoon or other receiving water within an environmentally sensitive area Projects, active or inactive, adjacent or tributary to sensitive water bodies Q B) Medium Priority 1) Capital Improvement Projects where grading occurs, however a Storm Water Pollution Prevention Plan (SWPPP) is not required under the State General Construction Permit (i.e., water and sewer replacement projects, intersection and street re-alignments, widening, comfort stations, etc.) 2) Permit projects in the public right-of-way where grading occurs, such as installation of sidewalk, substantial retaining walls, curb and gutter for an entire street frontage, etc., however SWPPPs are not required. 3) Permit projects on private property where grading permits are required, however. Notice Of Intents (NOIs) and SWPPPs are not required. 1]^ C) Low Priority 1) Capital Projects where minimal to no grading occurs, such as signal light and loop installations, street light installations, etc. 2) Permit projects in the public right-of-way where minimal to no grading occurs, such as pedestrian ramps, driveway additions, small retaining walls, etc. 3) Permit projects on private property where grading permits are not required, such as small retaining walls, single-family homes, small tenant improvements, etc. 32 GENERAL SPECIFICATIONS FOR HYDROCARBON DROP-IN FOSSIL FILTER™ CATCH BASIN INSERTS Scope: This specification describes a Catch Basin Filtration System that removes petroleum hydrocarbons and other pollutants from water flowing into the drainage mlet while permitting the undisturbed passage of the water. The filter shall incorporate a silicate adsorbent. Material Properties: The filter structure shall be of solid-body construction and manufactured from High Density Polyethylene (HDPE), petroleum resistant fiberglass or stainless steel, at the option ofthe end-user. The filter screens, and associated hardware for all units shall be stainless steel Type 304. The fiher sorbent shall be an adsorbent material treated to attract and retain petroleum hydrocarbons. It shall be hydrophobic, non-biodegradable and non-leaching and contain no hazardous ingredients as defmed by the U.S. Environmental Protection Agency (EPA), US Occupational Safety and Health Administration (OSHA), and the World Health Organization (WHO). Installation: \ Installation shall not require extensive modification of the catch basin and caii be performed by a manufacturer-approved installer or by the end-user. When installation is by an installer, a Fossil Filter Installation Record will be given to the end-user. Filter Maintenance and Disposal of Exposed Adsorbent*: Periodic maintenance of the installed devices is vital to efficient filtration. Such maintenance may be perfonned by manufacturer-approved persons or by the end user. When maintenance is by the former, a Fossil Filter Maintenance Record will be given to the end-user. Disposal ofthe exposed adsorbent shall be in accordance with local regulatory agency requirements and local, state and federal environmental regulations. *Note: Proof of adequate follow-on maintenance of the filter and proper disposal of the exposed adsorbent is now being required by some local governments before they will issue a fmal permitfor a project In other cases, land owners where fUters are installed are being formally notified by local government agencies that they have to maintain the filters and notify the agency when it is completed. (Rev 10/00) STAINLESS STEEL TOP FRAME ANO SCREEN ASSEMBLY STAINLESS STEEL BOLT/NUT (4 TOTAL) HDPE OR FIBERGLASS FILTER BODY NEOPRENE GASKET (TWO SIDES) SUPPORT FLANGE NOTES: Fossil Filter"'mserX body shall be one piece manufactured frorn either High Density Polyethylene (HDPE) or petroleum resistant fiberglass which meets or exceeds PS 15-69. All metal components shall be a stainless steel (Type 304). Refer to dimension chart for catch basin and filter sizing. Filternnedium shall be FossilRockP' installed and maintained in accordance with manufacturer recommendations. Refer to Manufacturer's recommendations for maintenance program. STAINLESS STEEL SCREENS (TOP, BOTTOM AND SIDES) HIGH FLOW BYPASS SUPPORT FLANGE TOP VIEW SUPPORT FLANGE NEOPRENE GASKET FILTER BODY FILTER MEDIUM ' z SECTION VIEW DIMENSION CHART MODEL NO. A B c O E F G FF-V64 IS-13" 15.5" 13.5" 6" 5" 5" FF-1616 IS" 15" 17.5" 15.5" 8.5" 6" 6" FF-1818 17" 17" 19.5" 17.5" 8.5" 8" 8" FF-1624 23" 15" 17.5" 23.5" 8.5" 6" 13" FF-1824 23" 17" 19.5" 23.6" 8.5" 13" 8" FF-2424 23" 23" 26" 23.5-8.5" 13" 13" FF-2430 29" 23" 26" 29.5" 8.5" 13" 19" FF-2436 35" 23" 26" 35.5" 8.5" 13" 25" FF-2436S 23" 35" 39" 23.5" 8.5" 25" 13" FF-2448 47" 23" 26" 47.5" 8.5" 13" 38" FF-3030 29" 29" 34" 29.5" 8.5" 19" 19" FF-3636 35" 35" 39" 35.5" 8.6" 25" 25- FF-3648 47" 35" 39" 47.5" 8.5" 25" 37" FF-4848 47" 47" 53" 47.5" 8.5" 37" 37" FOSSIL FILTER™ "DROP IN" CATCH BASIN INSERT (SHEET 1 OF 2) Kristar Enterprises, Inc., Santa Rosa, CA (800) 579-8819 U.S. PATENT NO. 5,720,574 i INLET GRATE FOSSIL FILTER INSERT (SEE APPLICATION CHART) CONCRETE CATCH BASIN NOTES: 1. Fossa /v/fer"" insert body shall be one piece manufactured from either High Density Polyethylene (HDPE) or petroleum resistant fiberglass which meets or exceeds PS 15-69. 2. All metal components shali be a stainless steel (Type 3(34). 3. Refer to dimension chart for catch basin and fitter sizing. 4. Filter medium shall be Fossil Rock," installed and maintained in accordance with manufacturer recommendations. 5. Refer to Manufacturer's recommendations for maintenance program. APPLICATION CHART MODEL NO. Filter O.D. Inlet l.D. FF-V64 13.00" X 13.00" 14.00" X 14.00" FF-1616 15.00" X 15.00" 16.00" X 16.00" FF-1818 17.00" X 17.00" 18.00" X 18.00" FF-1624 15.00" X 23.00" 16.00" X 24.00" FF-1824 17.«0" X 23.00" 18.00" X 24.00" FF-2424 23.00" X 23.00" 24.00" X 24.00" FF-2430 23.00" X 29.00" 24.00" X 30.00" FF-2436 23.00" X 35.00" 24.00" X 36.00" FF-2448 23.00" X 47.00" 24.00" X 48.00" FF-3030 29.00" X 29.00" 30.00" X 30.00" FF-3636 35.00" X 35.00" 36.00" X 36.00" FF-3648 35.00" X 47.00" 36.00" X 48.00" FF-4848 47.00" X 47.00" 48.00" X 48.00" FOSSIL FILTER™ "DROP IN" CATCH BASIN INSERT INSTALLATION DETAIL (SHEET 2 OF 2) KriStar Enterprises, Inc., Santa Rosa, CA (800) 579-8819 U.S. PATENT NO. 5,720,574 GRATE FILTER CARTRIDGES (SEE NOTE 5) FOSSIL FILTER™ INSERT SLOPING SUPPORT FLANGE NOTES: 1. Fossil Flltar" insert body shall be one piece, manufactured from petroleum resistant fiberglass which meets or exceeds PS 15-69 or HDPE plastic. 2. All metal components shall be stainless steel (Type 304). 3. Support flange shall be sloped allowing for installed filter body to set on level plane. 4. Refer to dimension chart for grate and filter sizing. 5. Fossil Filter" shall have removable filter cartridges (quantity of 4) for ease of maintenance. 6. Filter medium shall be Fossil Rock;^ installed and maintained in accordance with manufacturer recommendations. 7. Refer to Manufacturer's recommendations for maintenance program. 8. Catch basin grate dimensions are approximate. Custom size filters are available upon request. DIMENSION CHART MODEL NO. A B C Grate Dimension FF-1824FGO 17" 23" 8" 18"X 26" FF-1836FGO 17" 34" 8" 18"X 40" FF-2436FG0 23" 34" 8" 24" X 40" CURB OPENING SLOPING FLANGE (SEE NOTE 3) FIBERGLASS FLANGE- WITH GASKET CURB OPENING GRATE - CATCH BASIN 3n BYPASS AREA FILTER BODY SIDE VIEW COMBINATION INLET (Gutter/Curb Openings) FOSSIL FILTER™ "DROP rN" CATCH BASIN INSERT (COMBINATION INLET) KriStar Enterprises, Inc., Santa Rosa, CA (800) 579-8819 U.S. PATENT NO. 5,720,574