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Home My WebLink AboutCDP 97-05B; Costco Facility Fuel Expansion; STORM WATER MANAGEMENT PLAN; 2015-07-09FUSCOE ENGINEERING STORM WATER MANAGEMENT PLAN COSTCO CARLSBAD GAS EXPANSION July 9, 2015 San Diego, California prepared for: Costco Wholesale 999 Lake Drive Issaquah, WA. 98027 prepared by: Fuscoe Eng ineering, Inc. 6390 Greenwich Drive, Suite 1 70 San Diego, California 92122 858.554.1500 www. fuscoe. com Bryan D. Smith Job # 02156-079-04 f u I I circle t h n k ·E· n g STORM WATER MANAGEMENT PLAN Costco Carlsbad Gas Station Expansion City of Carlsbad, California Prepared under the responsible charge of: ~·-1 T~ T'\C' c._· I v---o~-- Bryan D. Smith, P.E. Fusco1a Engineering, Inc. 6390 Greenwich Dr., Ste 1 70 San Diego, CA 92122 RCE 75822 Prepared for: Costco Wholesale 999 Lake Drive Issaquah, WA 98027 July 2015 EXP: 06-30-16 7.0 APPENDICES .......................................................................................................... 24 ,1\ppendix l .................................................. Completed City of Carlsbad Form E-34 Appendix 2 .......................................................................................... Project Map ,1\ppendix 3 ........................................................................ BMP /Water Quality Plan /'\ppendix 4 ............................................................................ Educational Material Appendix 5 ................................................................ Treatment Control BMP Sizing Appendix 6 ........................................................ Treatment Control BMP Fact Sheets .Appendix 7 ............................................................... 2010 CWA Section 303(d) List TABLE OF CONTENTS TABLE C)F CONTENTS ........................................................................................................ 3 1 .0 ~~~TRODUCTION ...................................................................................................... 1 1 .1 PROJECT DESCRIPTION ........................................................................................... 1 1 .2 PRESENT CONDITION ............................................................................................. 1 1.3 PROPOSED CONDITION ......................................................................................... 1 1.4 PROPOSED lAND USE, BUILDING, AND PARKING SUMMARY ................................... 2 1.5 HYDROLOGIC UNIT CONTRIBUTION ...................................................................... 2 1.6 HYDROMODIFICATION APPLICABILITY ................................................................. .4 1.7 OPPORTUNITIES & CONSTRAINTS: STORMWATER CONTROL & TREATMENT ............ 5 2.0 WATER QUALITY ENYIRONMENT ............................................................................... 6 2.1 BENIFICIAL USES ..................................................................................................... 6 2.1.1 INlAND SURFACE WATERS ............................................................................. .7 2.1.2 COASTAL WATERS .......................................................................................... 8 2.1.3 GROUND WATERS .......................................................................................... 8 2.1.4 2010 SECTION 303(D) LIST STATUS ................................................................. 8 2.2 HYDROLOGY .......................................................................................................... 9 2.4 SOIL CHARACTERISTICS ........................................................................................ 12 3.0 CONSTRUCTION PHASE BMPs ................................................................................ 13 4.0 POST CONSTRUCTION BMPs ................................................................................. 14 4.1 LOW-IMPACT DEVELOPMENT DESIGN PRACTICES ................................................. 14 4.2 SOURCE CONTROL BMPs ..................................................................................... 16 4.3 TREATMENT CONTROL BMPS ................................................................................ 19 4.3.1 BIOFILTRATION SYSTEM (MODUlAR WETLAND SYSTEM) ................................. 20 5.0 ~MINTENANCE ...................................................................................................... 21 5.1 BIOFILTRATION SYSTEM (MODULAR WETLANDS) .................................................. 22 6.0 SUMMARY AND CONCLUSIONS ........................................................................... 23 PALOMAR AIRPORT RD. au reo nnz~ VICINITY MAP NO SCALE Figure 1 Vicinity Map 1.0 INTRODUCTION This Storm Water Management Plan (SWMP) is required per the January 14, 2011 City of Carlsbad's Storm Water Standards Manual, City of Carlsbad Municipal Code Chapter 15.12, NPOES Order No. 2001-01 and under the Regional Water Quality Control Board Order R9-2007-0001. The purpose of this SWMP is to address the water quality impacts from the Costco Carlsbad Gas Station Expansion (herein referred to as the project) and is intended to address potential water quality impacts associated with the project. California Storm Water Quality Association (CASQA) BMPs, as well as those outlined in the Storm Water Standards Manual, will be used to provide a long-term solution to water quality on-site. 1.1 PROJECT DESCRIPTION This 0. 7 ± acre project site consists of an existing Costco Retail Gasoline Facility. The proposed project will install three additional fuel islands, extend the existing canopy to cover the new fuel islands as well as replace approximately 5,770 sf of AC paving and 5,680 sf of concrete. In addition five parking stalls will be converted to new landscaping to minimize the site imperviousness. The project site is bordered on the north by Palomar Airport Road, to the west by commercial use, and to the south and east by open space associated with Encinas creek. The immediate sur~ounding area is comprised primarily of single. Interstate 5 is approximately 0.4 miles to the west of the project site along Palomar Airport Road. The project site is currently located in the zone designated as R, Regional Commercial by the General Plan Land Use Map for the City of Carlsbad. The proposed project is designated as a "Priority Development Project" as described in the City of Carlsbod's Storm Water Standards Questionnoire, Form E-34. The applicable categories of which the project qualifies as "priority" from the Storm Water Standards Questionnaire are listed below: o Significant Redevelopment. Project creates or replaces 5,000 sf of impervious surface. 1.2 PRESENT CONDITION The existing site is currently developed as a gas station. The site is primarily impervious and sheet flows from north to south toward existing private storm drain. The existing private stor"Tl drain system located within the project limits flows to an existing detention basin. Please refer to Appendix 8 for additional drainage information. 1.3 PROPOSED CONDITION The r:;roject does not significantly alter hydrologic flows. The majority of the project will continue to sheet flow from north to south, but will be intercepted on the southeast side of the site by a proposed concrete gutter. The concrete gutter will convey flow to the proposed media filter BMP. Once the storm water has been treated, it wi II continue southwest via proposed private storm drain to existing storm drain which will ultimately discharge to the existing detention basin within the property boundory. 1.4 PROPOSED LAND USE, BUILDING, AND PARKING SUMMARY For the proposed project, the construction of three additional fueling islands and a canopy is proposed. Five existing parking stalls are proposed to be converted to landscape area to minimize site imperviousness. 1.5 HYDROLOGIC UNIT CONTRIBUTION The proposed project is located within undefined Hydrologic Sub-Area within the Encinas Hydrologic Area of the Carlsbad Hydrologic Unit. The corresponding number designation is 904.40. According to Project' Clean Water's website, "The Carlsbad Hydrologic Unit (HU) is approximately 210 square miles in area extending from the headwaters above Lake Wolhford in the east to the Pacific Ocean in the west, and from Vista and Oceanside in the north to Solana Beach, Escondido, and the community of Rancho Santa Fe to the south. The cities of Carlsbad, San Marcos, and Encinitas are entirely within this HU. There are numerous important surface hydrologic features within the Carlsbod HU including four unique coastal lagoons, three maior creeks, and two large water storage reservoirs. The HU contains four maior, roughly parallel hydrologic areas (HAs). From north to south they are the Buena Vista (901.2), the Agua Hedionda (904.3), the Batiquitos (904.5), and the San Eliio (904. 6) HAs. Two smaller HAs, the Lama Alta (904. 1) and the Canyon de las Er cinas (904.4) are also within the Carlsbad HU." "The lorgest iurisdictions in terms of land area in the Carlsbad HU are the unincorporated San Diego County oreos (66 sq. miles), the cities of Carlsbad (39 sq. miles) and San Marcos (24 sq. miles), and on approximately 27 square mile portion of the City of Escondido. The cities of Carlsbad, San Marcos, and Encinitas are located entirely within the HU. Approximately 48% of the Carlsbad HU is urbanized. The dominant land uses are residential (29%), commercial/industrial ( 6%), freeways and roads ( 12%), agriculture (12%), and vacant/undeveloped (32%)." "The A9ua Hedionda, Buena Vista, and San Eliio lagoons ore experiencing impairments to beneficial uses due to excessive coliform bacteria and sediment loading from upstream sources. These coostal lagoons represent critical regional resources that provide freshwater and estuarine habitats for numerous plant and animo/ species. Other water bodies in the Corlsbad HU have been identified as impaired on the California 303(d) list for elevated coliform bacteria including several bcations in the Pacific Ocean near creek and lagoon outlets." "The population of the Carlsbad HU is approximately 500,000 residents makin9 it the third most densely populated in San Diego County behind the Pueblo Son Diego and the Penasquitos HUs. A high percentage of the undeveloped fond is in private ownership and the population of the Carlsbod HU is proiected to increase to over 700,000 residents by 2015. Effective planning measures will be needed to prevent this rapid development from further degrading water quolity in this region of San Diego County." (Source: http://www. projectcleonwoter.org/index. php?option =com_ content&view= orticle&id = 5&1temi d=40, accessed October, 2011) Encinus Creek is listed not as a water quality limited segment in the 2010 Integrated Report (Cieun Water Action Section 303(d) List I 305(b) Report) list of impaired water bodies which are discussed in 2 more d:;1ail in Section 2.14. Currently, there are no TMDLs for the receiving water bodies for this proiect. -------------------------------------------------------------------3 1.6 HYDROMODIFICATION APPLICABILITY City of Carlsbad requirements state that post-construction peak runoff flow rates and velocities from the project site shall be maintained at levels that will not cause a significant increase in downstream erosion. The creation of hydrologic conditions of concern on a downstream channel is prohibited. The proposed project will not significantly alter drainage patterns on the site and will not increase peak discharge or impervious area. See Drainage Study Excerpts in Appendix 8 for more detailed drainage information. The Costco Carlsbad Gas Station Expansion project does not require hydromodification controls, as the project is HMP Exempt as determined by "Figure 2.1 HMP Applicability Determination" in the City of Carlsbad Storm Water Manual below: tian 4 1.7 OPPORTUNITIES & CONSTRAINTS: STORMWATER CONTROL & TREATMENT The pcoposed project will not increase the area of impervious surfacing. Opportunities for stormwater control include retaining maximum amount of pervious area as possible and replacing existing parkin£! stalls with pervious landscaping to ensure the impervious footprint would not increase. Limitations within the project consist of soil quality (see section 2.4) that prevents the ability to infiltrate and bpography as well as the existing highly utilized, operational condition of the property and theref<Ye, limited area available for stormwater control and treatment use. -------------------------------------------------------------------5 2.0 WATER QUALITY ENVIRONMENT 2.1 BENIFICIAL USES The beneficial uses for the hydrologic unit are included in tables in sections 2.1.1, 2.1 .2 AND 2.1.3. These tobles have been extracted from the ''Water Quality Control Plan for the San Diego Basin (9)," dated September 8, 1994 with amendments effective prior to April 25, 2007. MUN-Municipal and Domestic Supply: Includes uses of water for community, military, or individual water supply systems including, but not limited to, drinking water supply. AGR-J\gricultural Supply: Includes uses of water for farming, horticulture, or ranching including, but not limited to, irrigation, stock watering, or support of vegetation for range grazing. WARM··-Warm Freshwater Habitat: Includes uses of water that support warm water ecosystems including, but not limited to, preservation or enhancement of aquatic habitats, vegetation, fish or wildlife, including invertebrates. AQUA-Includes the uses of water for aquaculture or mariculture operations including, but not limited to, pr::Jpagation, cultivation, maintenance, or harvesting of aquatic plants and animals for human consumption or bait purposes. COMM-includes the uses of water for commercial or recreational collection of fish, shellfish, or other organisms, including, but not limited to, uses involving organisms intended for human consumption or bait pJi'poses. BIOL-Includes uses of water that support designated areas or habitats, such as refuges, parks, sanctuories, ecological reserves, or Areas of Special Biological Significance (ASBS) where the preservotion or enhancement of natural resources requires special protection. EST-Includes uses of water that support estuarine ecosystems, including but not limited to, preservotion or enhancement of estuarine habitats, vegetation, fish, shellfish, or wildlife (e.g. estuarine mamr1ols, waterfowl, or shorebirds.) RARE-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, threat,:oned or endangered. SPWI\1-Includes uses of water that support that support high quality aquatic habitats suitable for reproduction and eorly development of fish. This use is applicable for only the protection of anadromous fish. SHELL-Includes uses of water that support habitats suitable for the collection of filter feeding shellfish (e.g. c:loms, oysters and mussels) for human consumption, commercial, or sport purposes. MIGR-Includes uses of water that support habitats necessary for migration, acclimatization between fresh ond salt water, or other temporary activities by aquatic organisms such as anadromous fish. MAR-Includes uses of water that support marine ecosystems including, but not limited b, preservation or enhoncement of marine habitats, vegetation such as kelp, fish, shellfish, or wildlife (e.g. marine mamrnols, shorebirds.) IND -Includes uses of water for industrial activities that do not depend primarily OCI water quality including, but not limited to, mining, cooling water supply, hydraulic conveyance, gravel washing, fire protection, or oil well re-pressurization. 6 REC1 --Contact Recreation: Includes uses of water for recreational activities involving body contact with y,ater, where ingestion of water is reasonably possible. These uses include, but are not limited to, swimming, wading, water-skiing, skin and SCUBA diving, surfing, white water activities, fishing, or use of natu:cal hot springs. REC2 --Non-Contact Recreation: Includes the uses of water for recreation involving proximity to water, but not normally involving 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, sightseeing, or aesthetic enjoyment in conjunction with the above octivities. WILD-Wildlife Habitat: Includes uses of water that support terrestriol ecosystems including, but not limited to, preservotion ond enhancement of terrestriol hobitats, vegetation, wildlife, (e.g., mammols, birds, reptiles, amphibians, invertebrates), or wildlife water and food sources. 2.1.1 INLAND SURFACE WATERS lnlanc surface waters have the following beneficial uses as shown: 904.40 o --Potential Beneficial Use x-Ex sting Beneficial Use +-Excepted From MUN 7 2.1.2 COASTAL WATERS Inland surface waters have the following beneficial uses as shown: o -Potential Beneficial Use x --Existing Beneficial Use 2.1.3 GROUND WATERS Ground waters have the following beneficial uses as shown: I HYDROLOGIC~ RECEIVING WATERS UNIT BASIN NUMBER o -Potential Beneficial Use x-Exis~ing Beneficial Use +--Excepted From MUN 2.1.4 2010 SECTION 303(0) LIST STATUS Encinos Creek/Canyon de las Encinas is not listed as a water quality limited segment in the 2010 lntegmted Report (Clean Water Action Section 303(d) List I 305(b) Report) list of impaired water bodies. Currently, there no TMDLs for any of the receiving water bodies for this project. The proposed project indirectly discharges into Encinas Creek through an unnamed tributary. The outfall of Encinos Creek/Canyon de las Encinas into the Pacific Ocean is approximo+ely 0.75 miles downstl-eam of the project site. RECIEIVING WATER Encinas 303(D) LISTED WATER QUALITY SEGMENTS •••• •• 904.40 303(d) IMPAIRMENT($) None DISTANCE FROM PROJECT miles -----·--------------------------------------------------------------8 2.2 HYDROLOGY The existing site is currently developed. The site is primarily impervious and sheet flows from north to south toward existing private storm drain. The existing private storm drain system located within the project limits flows to on existing detention basin. Please refer to Appendix 8 for additional drainage information. The existing Basin 1 as depicted in the Existing Hydrology Mop in Appendix 8 has 21,875 SF of impervious Area. The flow rates as calculated in the appendix ore below. ting Hydrology Intensity, i (in/hr) Peak Runoff, Q (cts) Runoff Time of b-Ar-ea, A Concentration 2-Yr 10-Yr 100-Yr 2-Yr 10-Yr 100-Yr sin (AC) Coeff, C (Min) 1 0.54 0.85 5 3 4.4 6.3 1.4 2.0 2.9 II 0.54 1A 2.0 2.9 The pmject does not significantly alter hydrologic flows. The majority of the project will continue to sheet flow from north to south, but will be intercepted on the southeast side of the site by o proposed concrete gutter. The concrete gutter will convey flow to the proposed media filter BMP. Once the stormvvoter has been treated, it will continue southwest via proposed private storm drain to existing storm drain which will ultimately discharge to the existing detention basin withir the property bouncory. The pmposed Basins l A and l B, as depicted in the Proposed Hydrology Mop in Appendix 8, has o cumul:::rtive total of 21,522 SF of impervious area. The flow rates as calculated in the appendix ore below. Propo sed Hydrology Intensity, i (m/h r) Peak Runoff. Q (cfs) Runoff Time of Area, A Co nee nt rat ion 2-Yr 10-Yr 100-Yr 2-Yr 10-Yr 100-Yr I (AC) Coeff, C (Min) 0.10 0.87 5 3.0 4.4 6.3 0.3 0.4 0.5 0.44 0.84 5 3.0 4.4 6.3 1.1 1.6 2.3 0.54 1.4 2.0 2.9 As shown in the tables above, the project does not increase the peak runoff rote for the 100 year rainfall event. -----------------------------------------------------------------------------9 2.3 POTENTIAL POLLUTANTS Based on the City of Carlsbad's Storm Water Standards Manual (January 14, 2011 ), the following pollutonts are anticipated, taking into account the proposed site uses. ANTICIPATED AND POTENTIAL POLLUTANTS GENERATED BY LAND USE TYPE GENERAL POLLUTANT CATEGORIES 0 (jVl PRIORITY PROJECT (/) z zLU o<! (/) 1-1-U:::) _u <{ LU CATEGORIES z z :zo o<! zOZ OLU -(/) 0 LU LU >-~ I~ LUZ<t: ZVl ~LU u ~ 02 <t:O.... (.9~1-LU(j) 0 1-~~ (.9~ (/)~ >-~ <{<{ I-:) i= :::) ~o ~ffi XLU:::) .....JLU u~ (/) LU LULU -~ <t:-LU (/) z I~ Ou t-0 OOVl 0<.9 Ill> 0.... Detached Residential X X X X X X X Development Attached Residential X X X pill pi21 p X Development Commercial pill pill X pi2) X pi 51 X pi31 pr5) Development > l oc Heavy Industrial X X X X X X Automotive Repair X Xi'llsl X X Shops Resto u ro nts X X X X pr11 Hillside Development X X X X X X > 5,000 s.f. Parking Lots pill pill X X pill X pili Retail Gasoline X X X X X Outlets Streets Highways and X pill X X'41 X pi 51 X X pill Freeways X = Anticipated P= Potential (l) A potential pollutant if landscaping exists on-site. (2) A potential pollutant if the project includes uncovered parking areas (3) A potential pollutant if land use involves food or animal waste products. (4) Including petroleum hydrocarbons (5) Including solvents According to the table above, which was extracted from Table 2-1 of the City of Carlsbad's Storm Water Standards Manual (January 14, 2011 ), the designation of Retail Gasoline Outlets has onticipoted or potential pollutants for Heavy Metals, Organic Compounds, Trash & Debris, Oxygen Demanding Substances and Oil & Grease. Receiving waters hove no 303(d) beneficial use impairments (watershed pollutants of concern). 10 PROBABLE POLLUTANTS CAUSING CLEAN WATER ACT SECTION 303(0) IMPAIRMENT LISTING p~ PO ~OBABLE ILLUTANTS t s leta Is Compounds d Debris Demanding :es Grease and Viruses 'S EUTROPHIC X X BENTHIC SEDIMENT TOXICITY (IN LOW DISSOLVED COMMUNITY TOXICITY STORM WATER OXYGEN DEGRADATION RUNOFF) X X X X X X X X X The toble above was extracted from Table 4-2 of the City of San Diego's Storm Vi::1ter Standards Manuol (January 14, 2011 ). Therefore, the following pollutants are designated as anticipated or potential for the proposed site, as well a:; have 303(d) impairments downstream are considered primary pollutants of concern. PRIMARY POLLUTANTS OF CONCERN NONE 1- SPECIFIC 303(0) IMPAIRMENT None The downstream receiving water bodies are not listed to have any 303(d) impairments. Typically, the 303(d) impairments that match with the designated land use potential pollutants become the primary pollutonts of concern. Because there are no 303(d) listed impairments there are no primary pollutants of concern for the Costco Carlsbad Gas Station Expansion project. A Media filter is proposed to treat the potential pollutants of concern designated by the project type (Retail Gasoline Station), herein referred to as secondary pollutants of concern. -----·--------------------------------------------------------------ll 2.4 SOIL CHARACTERISTICS A Geotechnical Engineering Services Report was prepared for the proiect site by Professional Service Industries, Inc, doted March ll, 1997. The following includes a portion of the executive summary: EXECUTIVE SUMMARY "An exploration and evaluation of the subsurface conditions hove been completed for the proposed Price Club Gas Station Addition facility located at 951 Palomar Airport Rood in Carlsbad, California. Test borings hove been drilled and selected soil samples were tested in the laboratory. In general the subsurrcrce materials consisted of up to 17 feet of fill soils, which ore underlain by the Santiago Formo'ion (Eocene-aged) which extends to depths greater than our maximum explored depth of 25 feet below the existing site grades. The fill was observed to consist of brown clayey sands and was observed to be generally moist and medium dense at the time of our exploration. The underlying formational materials were observed to consist of white to light grey clayey sandstone and siltstone and were observed to be generally moist to wet and dense to hard at the time of our exploration. Groundwater was not encountered within the maximum explored depth of 25 feet below the existing ground surface at the time of our exploration. Refusal materials were not encountered in any of the three borings." -------------------------------------------------------------------12 3.0 CONSTRUCTION PHASE BMPs The project will not disturb an area greater than one acre during construction therefore it will not need to obtoin a Waste Discharge Identification (WDID) Number under the Statewide General Construction Permit prior to the beginning of grading operations. The project will prepare a Tier 2 Construction SWPPP Site Assessment form per City of Carlsbad requirements. 13 4.0 POST CONSTRUCTION BMPs To address water quality for the project, BMPs will be implemented concerning site planning, activities, and structural treatment. The January 14, 2011, City of Carlsbad Storm Water Standards Manual guidel nes hove been utilized in the selection of post construction BMPs. In addition, any features or activities included in the project that ore applicable for the inclusion of CASQA BMPs ore included as well. Treatment control BMP sizing calculations ore included in Appendix 5 and educational materials ore included in Appendices 4 and 6 of this report. 4.1 LOW-IMPACT DEVELOPMENT DESIGN PRACTICES • Detain and Retain Runoff Throughout Site o No additional runoff will leave the site than pre-construction conditions. • Consider Permeable Pavements and Surface Treatments o Permeable Pavers and Pervious Concrete ore not feasible due to underlying soil quality not conducive to infiltration. • Disperse Runoff to Adjacent Pervious Areas o Runoff from parking lots and driveways ore directed to a pervious modular wetland system which will treat the flow before discharging it to on-site stc:rm drain that ultimately flows to existing on site detention basin. • Direct Runoff to Integrated Management Practices o Project Clean Water design criteria was followed. Modular Wetland System designed within project scope to capture and treat runoff. • Drain a Portion of Impervious Areas into Pervious Areas o Impervious Areas flow to pervious areas such as landscaping and modular wetland system. • Design and construct pervious areas, if any, to effectively receive and infiltrate runoff from impervious areas, taking into account soil conditions, slope, and other pertinent factors. o Due to soil conditions not allowing infiltration, designed flow through planters will hove impermeable liners. Runoff will filter through modular wetland system and, once treated, flow via sub drains to existing detention basin. • Construct a portion of paved areas with low traffic and appropriate soil conditions with permeable surfaces o Not feasible due to heavy traffic area consistent with active retail gasoline station traffic activity. • Minimize Impervious Surfaces o The existing site was primarily impervious. The area of the site that was pervious that required demolishing was balanced by demolishing existing parking stalls and converting them to landscaping. The impervious area was decreased slightly in this project. -----------------------------------------------------------------------------14 • Disconnect Discharges o Site constraints of the existing retail gasoline outlet prevent the feasibility of significant vegetated areas. Flow is intercepted by o concrete gutter and directed to o modular wetland before ultimately discharging to on existing detention basin. -------------------------------------------------------------------l 5 4.2 SOURCE CONTROL BMPs The proposed use of the project incorporates the following Source Control BMPs 1n the project's design • Stenciling Inlets and Signoge o All storm drain inlets will either be stenciled or stomped with prohibitive bnguoge such as "No Dumping. -I Live Downstream" or other language approved by the City Engineer. o No dumping signs or graphical icons may be installed throughout the project site to prohibit dumping. • Landscape Design o The project will incorporate some native, drought-tolerant species that do not require excessive irrigation. The design will strive to maximize canopy interception and employ water conservation by preserving native trees and shrubs, if opp1icable. o The project will consider using pest resistant plants. o To insure successful establishment, the plant palate will aim to be appropriate to the site's soils, slopes, climate, sun, wind, rain, land use, air movement, ecological consistency and plant interactions. • Water Efficient Irrigation o The project's irrigation system design will reduce over-irrigation, employ rain shutoff devices which will prevent irrigation after rainfall events and minimize unnecessary runoff. • Protect Slopes and Channels o No slopes on project site. • Trash Receptacles o No trash receptacles proposed on site. • Material Storage Areas o Not applicable • Interior floor drains and elevator shaft sump pumps (if applicable) o Not applicable • Interior parking garages o Not applicable • Food service o Not applicable • Industrial processes o Not Applicable • Outdoor Storage Areas o Not Applicable -----------------------------------------------------------------------------16 • Vehicle and Equipment Cleaning o Not Applicable • Vehicle and Equipment Repair and Maintenance o Not Applicable • Fuel Dispensing Areas o Portland cement concrete or equivalent will be used to pave proposed areas over fuel storage tanks. o New fuel areas are designed to extend 6.5 feet (2.0 meters) from the corner of each fuel dispenser, or the length at which the hose and nozzle assembly may be operated plus 1 foot (0.3 meter), whichever is less. o Project is sloped to prevent ponding. o Existing and proposed topography prevent run-on from flowing on to the fueling areas. o The project is designed to drain to the project's treatment control BMPs prior to discharging to the storm water conveyance system. • Loading Docks o Not Applicable • Miscellaneous Drain or Wash Water o Avoid roofing, gutters and trim made of copper or other unprotected metals that may leach into runoff. • Plazas, sidewalks and parking lots o Plazas, sidewalks and parking lots shall be swept regularly to prevent the accumulation of litter and debris. Debris from pressure washing shall be collected to prevent entry into the storm drain system. Wash water containing any cleaning agent or degreaser shall be collected and discharged to the sanitary sewer and not dischar;Jed to a storm drain. • Employ Integrated Pest Management Principals o Integrated pest management (IPM) is an ecosystem-based pollution prevention strategy that focuses on long-term prevention of pests or their damage through a combination of techniques such as: • Biological control • Habitat manipulation • Use of resistant plant varieties o Pesticides are used only after monitoring indicates they are needec: according to established guidelines. Pest control materials ore selected and applied in a manner that minimizes risks to human health, beneficial and non-target organisms, and the surrounding environment. More information regarding pesticide application may be obtained at the following University of California-Davis website: http://www. i pm. ucdavis .edu/WATE R/U/i ndex. html o To eliminate or reduce the need for pesticide use, the following strotegies can be used: • Plant pest-resistant or well-adapted plant varieties ------------------------------------------------------------------------------17 • Discourage pests by modifying the site and landscaping design o IPM educational materials should be distributed to future site residents and tenants. These educational materials should address the following: • Use of barriers, screens, and caulking to keep pests out of buildings and landscaping • Physical pest elimination techniques, such as weeding, washing , or trapping pests • Relying on natural enemies to eliminate pests • Proper use of pesticides as a last line of defense -----------------------------------------------------------------------------l 8 4.3 TREATMENT CONTROL BMPS Structuml treatment facilities are designed to remove pollutants contained in storm water runoff. Runoff from the proposed site will flow from impervious and semi-pervious surfaces, picking up pollutor.ts and other associated debris from the proposed project site. Treatment of the anticipated pollutants will come from the BMPs listed below. The selected BMPs were selected based on the following treatment matrices located in the City of Carlsbad's Storm Water Standards Manual, shown on the following page from T abies 2-2 and 2-3, respectively. Pollutants that tend to p II t t th t t d t C S d. t d . t "th f· o u an s a en o P II t t oarse e rmen an assocra e wr rne b d" 1 d f 11 · o u an T h rt• 1 d . e rsso ve o owrng ras pa rc es unng t t t t t t rea men rea men Sedim e nt X X Nutrie 1-s X X Heavy Aetals X Organ c Compounds X Trash , & Debris X Oxyge n Demanding X Bacteri c l X Oil& irease X Pestici es X 1• Infiltration Pollutants Bioretention SBett ~ng Wet Podnds Facilities M d" Higher- Higher-Trash Rocks & V t d f F .1.t. osms on e 10 t t d" H d d . egeto e o oc1 1 1es (D C t ct d or F"lt ro e ro e me 10 y ro ynom1c S 1 (LID) ry ons ru e P ct• 1 ers b" f"lt f"lt D . woes concern p d ) W tl d ro 1ces 10 1 ers 1 ers ev1ces ,t ts Coarse Sedimer and Trash Poll utan that tenc to associot with fine particles during treatme Pol Iuten that tellC to be dissolve followin treatm8 j e nt ts J d ';:] nt High High Medium on s e on s (LID) High High High High High High Low Medium High High High High High High High Medium Medium Low Medium Low Low Low Low Low Certain factors such as site layout, soil feasibility, and treatment capability are take'' in to account when selecting treatment control BMPs. The goal in selecting treatment control BMPs is to find the 19 best solution as to promote water quality treatment, realize project objectives, remain cost effective, and utilize low impact design (LID) practices. Since the project site is underlain by fill soils not conducive to infiltration, as discussed in the project's geotechnical report referenced in Section 2.4, treatment control BMPs that rely on infiltcation will not be used for the project. The next best effective treatment control BMPs appropriate for the constraints of the project is a constructed wetland, or biofiltration system. Biofiltration systems/constructed wetlands have high removal efficiency for coarse sediment and trash and pollutants that tend to associote with fine particles during treatment. These systems also have a medium removal efficiency for pollutants that tend to be dissolved following treatment. The following treatment control BMPs will be implemented to address water quality, based on the Seconclory Pollutants of Concern as there are no primary pollutants of concern for the project site. 4.3.1 BIOFILTRATION SYSTEM (MODULAR WETLAND SYSTEM) Modulm Subsurface Flow Wetland Systems (MWFWS) are used for filtration of stormwater runoff includil!;J dry weather flows. The MSFWS is a pre-engineered biofiltration system composed of a pretrectment chamber containing filtration cartridges, a horizontal flow biofiltration chamber with a peripheral void area and a centralized and vertically extending underdrain, the biofiltration chamber containing a sorptive media mix which does not contain any organic material and a layer of plant establi:;hment media, and a discharge chamber containing an orifice control structure. Treated water flows horizontally in series through the pretreatment chamber cartridges, biofiltration chamber and orifice control structure to remove pollutants. -----------------------------------------------------------------------------20 5.0 MAINTENANCE Design01ted Responsible Party: Costco Wholesale 999 Lake Drive Issaquah, WA 98027 A training program will be administered and implemented by Costco Wholesale and shall occur at a minimum of once annually. The training program shall consist of, at a minimum: the disbursement of the brochures and flyers included in this SWMP and a copy of the maintenance plan to all operation and maintenance staff associated with the project. A training log shall be filled out at each training session ond kept for a minimum of five (5) years. Costc:c: Wholesale will complete and maintain operation and maintenance forms to adequately document all maintenance performed on the project's treatment control BMPs. These records should be kept on file for a minimum of five (5) years and shall be mode accessible to the Citv of Carlsbad, the State Water Resources Control Boord or any other authority regulating storm water discharges for inspection upon request at any time. All wmte generated from the project site is ultimately the responsibility Costco Wholesole t. Disposal of sed ment, debris, and trash will comply with applicable local, county, state, and federal waste control programs. Suspected hazardous waste will be analyzed to determine proper disposal methods. The following Operation and Maintenance Plan has been developed for each type of treatment control BMP used on this project. These ore minimum requirements only. Their frecuency and/or scope may be increased, if necessary, to meet and/or maintain the level of storm water quality treatment required of this project. All costs associated with the operation and maintenance of the treatment control BMPs listed below will be funded by Costco Wholesale in perpetuity or until the project is sold to another entity where the responsibility would transfer with the sole of the property. The pr:::>ject's owner, Costco Wholesale, will enter into the City of Carlsbad's Storm Water Quality BMP Mcintenonce Agreement which will be executed prior to grading permit issuance. 21 5.1 BIOFILTRATION SYSTEM (MODULAR WETLANDS) Biofi ltrati on System Inspection Activities oil and repair eroded areas. -- Inspect s r------ lnspect fc sure thE )r erosion or damage to vegetation before major fall runoff to be system is functioning as designed. -- Inspect tc and rer.;lc ) ensure vegetation is well established. If not, either prepare soil mt or replace with alternative species. Check fo r debris and litter, and areas of sediment accumulation. Inspect h eolth of trees and shrubs. - Biofiltration System Maintenance Activities Remove Trash from Screening Device ·-----------~--- Remove Sediment from Separation C:homber - Replace Cartridge Filter i\t'i_edio ___ ---------- Replace Dro_in Down FilterMedio -~------------- Trim Vegetation 22 Recommended Frequency Monthly Semi-Annual Inspection Recommended Frequency 6-12 month ---- 12-24 months --·----- 12-24 months -------------- 12-24 months 1 2-24 months 6.0 SUMMARY AND CONCLUSIONS This S·orm Water Management Plan (SWMP) has been prepared in accordance with the City of Carlsbad's Municipal Code, Standard Urban Storm Water Mitigation Plan (SUSMP) and Storm Water Standords Manual. This SWMP has evaluated and addressed the potential pollutants associated with this project and their effects on water quality. A summary of the facts and findings associated with this project ond the measures addressed by this SWMP is as follows: • The beneficial uses for the receiving waters hove been identified. None of these beneficial uses will be impaired or diminished due to the construction and operation of this project to the best of my knowledge and belief. • The proposed project will not significantly alter existing drainage patterns and the existing discharge points of the project site. • All open areas and slopes will be landscaped to reduce and/or eliminate the potential for sediment discharge and landscaped areas will have compaction minimized, where feasible, to provide opportunities for rainfall infiltration. • The proposed flow through planter areas will provide storm water quality treatment by providing on opportunity for treatment of storm water runoff by subsurface filtration into -he underlying, amended soil matrix prior to entering the systems' sub-drains. • The proposed low impact development site design, source control and treatment control BMPs discussed in this report address measures intended to protect water quality, meet water quality ob ectives and maintain the existing beneficial uses to the maximum extent practicob'e. This Storm Water Management Plan has been prepared under the direction of the following Registered Civil Engineer. The Registered Civil Engineer attests to the technical information contained herein and the engineering data upon which recommendations, conclusions, and decisi::ms ore based on the best of the Registered Civil Engineer's knowledge and belief. Bryon D. Smith, P.E. RCE N:J. 75822 Exp. 06-30-14 Date ------------------------------------------------------------------------------23 7.0 APPENDICES Appendix 1 Appendix 2 Appendix 3 Appendix 4 Appendix 5 Appendix 6 Appendix 7 Appendix 8 Completed City of Carlsbad Form E-34 Project Mop BMP/Woter Quality Plan Educational Material Treatment Control BMP Sizing Treatment Control BMP Fact Sheets 2010 CWA Section 303(d) List Hydrology Exhibits and Calculations ----------------------------------------------------------------------24 Appendix 1 Ci1y of Carlsbad Form E-34 «~ ~ CITY OF CARLSBAD STORM WATER STANDARDS QUESTIONNAIRE E-34 Development Services land Development Engineering 1635 Faraday Avenue 760-602-2750 www.carlsbadca.gov INSTRUCTIONS: To address post-development pollutants that may be generated from development projects, the City requires that new development and significant redevelopment priority projects incorporate Permanent Storm Water Best Management Practices (BMP's) into the project design per the City's Standard Urban Stormwater Management Plan (SUSMP). To view the SUSMP, refer to the Engineering Standards (Volume 4, Chapter 2) at www.carlsbadca.gov/standards. Initially this questionnaire must be completed by the applicant in advance of submitting for a development application (subdivision, discretionary permits and/or construction permits). The results of the questionnaire determine the level of storm water standards that must be applied to a proposed development or redevelopment project. Depending on the outcome, your project will either be subject to 'Standard Stormwater Requirements' or be subject to additional criteria called 'Priority Development Project Requirements'. Many aspects of project site design are dependent upon the storm water standards applied to a project. Your responses to the questionnaire represent an initial assessment of the proposed project conditions and impacts. City staff has responsibility for making the final assessment after submission of the development application. If staff determines that the questionnaire was incorrectly filled out and is subject to more stringent storm water standards than initially assessed by you, this will result in the return of the development application as incomplete. In this case, please make the changes to the questionnaire and resubmit to the City. If you are unsure about the meaning of a question or need help in determining how to respond to one or more of the questions, please seek assistance from Land Development Engineering staff. A separate completed and signed questionnaire must be submitted for each new development application submission. Only one completed and signed questionnaire is required when multiple development applications for the same project are submitted concurrently. In addition to this questionnaire, you must also complete, sign and submit a Project Threat Assessment Form with construction permits for the project. I Please start by completing Step 1 and follow the instructions. When completed, sign the form at the end and submit this with your application to the city. STEP1 TO BE COMPLETED FOR ALL PROJECTS To determine if your project is a priority development project, please answer the following questions: YES NO 1. Is your project LIMITED TO constructing new or retrofitting paved sidewalks, bicycle lanes or trails that meet the following criteria: (1) Designed and constructed to direct storm water runoff to adjacent vegetated areas, or other non-erodible permeable areas; OR (2) designed and constructed to be hydraulically disconnected from X paved streets or roads; OR (3) designed and constructed with permeable pavements or surfaces in accordance with USEPA Green Streets guidance? 2. Is your project LIMITED TO retrofitting or redeveloping existing paved alleys, streets, or roads that are X designed and constructed in accordance with the USEPA Green Streets guidance? If you answered "yes" to one or more of the above questions, then your project is NOT a priority development project and therefore is NOT subject to the storm water criteria required for priority development projects. Go to step 4, mark the last box stating "my project does not meet PDP requirements" and complete applicant information. If you answered "no" to both questions, then go to Step 2. E-34 Page 1 of 3 Effective 6/27113 «~ ~ C I TY OF CARLSBAD STORM WATER STANDARDS QUESTIONNAIRE E-34 Developmen t Services Land Development Engineering 1635 Faraday Avenue 760-602-2750 www.carlsbadca.gov STEP2 TO BE COMPLETED FOR ALL NEW OR REDEVELOPMENT PROJECTS To determine if your project is a priority development project, please answer the following questions: YES 1. Is your project a new development that creates 10,000 square feet or more of impervious surfaces collectively over the entire project site? This includes commercial, industrial, residential, mixed-use, and public development projects on public or private land. 2. Is your project creating or replacing 5,000 square feet or more of impervious surface collectively over the entire project site on an existing site of 10,000 square feet or more of impervious surface? This includes commercial, X industrial, residential, mixed-use, and public development projects on public or private land. 3. Is your project a new or redevelopment project that creates 5,000 square feet or more of impervious surface collectively over the entire project site and supports a restaurant? A restaurant is a facility that sells prepared foods and drinks for consumption, including stationary lunch counters and refreshment stands selling prepared foods and drinks for immediate consumption. 4. Is your project a new or redevelopment project that creates 5,000 square feet or more of impervious surface collectively over the entire project site and supports a hillside development project? A hillside development project includes development on any natural slope that is twenty-five percent or greater. 5. Is your project a new or redevelopment project that creates 5,000 square feet or more of impervious surface collectively over the entire project site and supports a parking lot. A parking lot is a land area or facility for the temporary parking or storage of motor vehicles used personally for business or for commerce. 6. Is your project a new or redevelopment project that creates 5,000 square feet or more of impervious surface collectively over the entire project site and supports a street, road, highway freeway or driveway? A street, road, highway, freeway or driveway is any paved impervious surface used for the transportation of automobiles, trucks, motorcycles, and other vehicles. 7. Is your project a new or redevelopment project that creates or replaces 2,500 square feet or more of impervious surface collectively over the entire site, and discharges directly to an Environmentally Sensitive Area (ESA)? "Discharging Directly to" includes flow that is conveyed overland a distance of 200 feet or less from the project to the ESA, or conveyed in a pipe or open channel any distance as an isolated flow from the project to the ESA (i.e. not commingles with flows from adjacent lands).* 8. Is your project a new development that supports an automotive repair shop? An automotive repair shop is a facility that is categorized in any one of the following Standard Industrial Classification (SIC) codes: 5013, 5014, 5541, 7532-7534, or 7536-7539. 9. Is your project a new development that supports a retail gasoline outlet (RGO)? This category includes RGO's that meet the following criteria: (a) 5,000 square feet or more or (b) a project Average Daily Traffic (ADT) of 100 or more vehicles per day. 10.1s your project a new or redevelopment project that results in the disturbance of one or more acres of land and are expected to generate pollutants post construction? 11 .1s your project located within 200 feet of the Pacific Ocean and (1) creates 2,500 square feet or more of impervious surface or (2) increases impervious surface on the property by more than 1 0%? NO X X X X X X X X X X If you answered "yes" to one or more of the above questions, you ARE a priority development project and are therefore subject to implementing structural Best Management Practices (BMP's) in addition to implementing Standard Storm Water Requirements such as source control and low impact development BMP's. A Storm Water Management Plan (SWMP) must be submitted with your application(s) for development. Go to step 3 for redevelopment projects. For new projects, go to step 4 at the end of this questionnaire, check the "my project meets PDP requirements" box and complete applicant information. If you answered "no" to all of the above questions, you ARE NOT a priority development project and are therefore subject to implementing only Standard Storm Water Requirements such as source control and low impact development BMP's required for all development projects. A Storm Water Management Plan (SWMP) is not required with your application(s) for development. Go to step 4 at the end of this questionnaire, check the "my project does not meet PDP requirements" box and complete applicant information. E-34 Page 2 of 3 Effective 6/27/13 ~ ~ CITY OF CARLSBAD STORM WATER STANDARDS QUESTIONNAIRE E-34 STEP3 Development Services Land Development Engineering 1635 Faraday Avenue 760-602-2750 ·www.carlsbadca.gov TO BE COMPLETED FOR REDEVELOPMENT PROJECTS THAT ARE PRIORITY DEVELOPEMENT PROJECTS ONLY Complete the questions below regarding your redevelopment project: YES Does the redevelopment project result in the creation or replacement of impervious surface in an amount of less than I X I 50% of the surface area of the previously existing development? If you answered "yes," the structural BMP's required for Priority Development Projects apply only to the creation or replacement of impervious surface and not the entire development. Go to step 4, check the "my project meets PDP requirements" box and complete applicant information. NO If you answered "no," the structural BMP's required for Priority Development Projects apply to the entire development. Go to step 4, check the "my project meets PDP requirements" box and complete applicant information. STEP4 CHECK THE APPROPRIATE BOX AND COMPLETE APPLICANT INFORMATION My project meets PRIORITY DEVELOPMENT PROJECT (PDP) requirements and must comply with additional stormwater criteria per the SUSMP and I understand I must prepare a Storm Water Management Plan for submittal at time of application. I understand flow control (hydromodification) requirements may apply to my project. Refer to SUSMP for details. 0 My project does not meet PDP requirements and must only comply with STANDARD STORMWATER REQUIREMENTS per the SUSMP. As part of these requirements, I will incorporate low impact development strategies throughout my project. Applicant Information and Signature Box Address: 6390 Greenwich Dr. #170, San Diego, CA 92122 Applicant Name: Bryan D. Smi th, P.E. Applicant Signature: Accessor's Parcel Number(s): 211-040-036 Applicant Title: Civil Engineer, Project Mana ger Date: July 9, 2015 This Box for City Use Only City Concurrence: By: Date: Project ID: I YES I NO l I * Environmentally Sensitive Areas include but are not limited to all Clean Water Act Section 303(d) impaired water bodies; areas designated as Areas of Special Biological Significance by the State Water Resources Control Board (Water Quality Control Plan for the San Diego Basin (1994) and amendments); water bodies designated with the RARE beneficial use by the State Water Resources Control Board (Water Quality Control Plan for the San Diego Basin (1994) and amendments); areas designated as preserves or their quivalent under the Multi Species Conservation Program within the Cities and County of San Diego; and any other equivalent environmentally sensitive areas which have been identified by the Copermittees. E-34 Page 3 of 3 Effective 6/27/13 Appendix2 ProiedMap ~ : ~::::::::::: =_=~~:l~·l:;:l:::;;~~:~1-1~:H~~?~~---: __ '._: ~: UE Jl1LUUJJ1.llillJ ,, ----- --- - - ----- - - - -- --- ---- ~D Lm ~ 11111 I 11 ~ I I I I I I I --, ,111 111111 I __lj CJ ,-_____________ _J I ; ' ' ---r=====;;;;;;;ll~~~.::..-_·~.~~~ Cl Colft'o ,,.,, ' '\ I tj I °' q I HtttH-ttttttrn~ 111111n H1111111 ~ ! MH 1111 1™ I w I I > I ir 0 g II ! ~111111~111~ I F~~~~-Ll::!::!::l::!:!:ill~J~1111111111111ij L i ~ ~1 I OVERALL SITE PLAN / / PROJECT DATA O.ENT OOITCOw«>t.ESAlE "'"""'""""' 116M:llWt.VU.II0)7 PflO,,ECT~1151f'.A.l.OMARAIAPOftT"°"° ~"""""" £XISf,l'\alTATIOHIIII.NQ J,.lll&I" ~OR.e.ACOTICNPISI.AtQ 2,7GIV. TOTM.FUEl.STAllONC111&1.Nq 5,t,4taF ~Oit,T'- E>UIT..Of'A.IIKHI 0 f'WCEST-.U.S 1:)..~IITM.L.a fbfM..iilJidJd -....... (:) f'VCS.STAU..1 (!).~ITM.La WWWNJW ;ir:r:aaTAI.LIPOt 1.ams.F a&.DNJAMA 1"'231&.F,I ~STALUl'&r CX::&lt'S•UaTALUl"ER100Ds.F: 11\._.(HUTAU.I . . NOTES 114 aTAU.1 11 aTAU.a m11m JataTM.LS ti ST,'UJ mstm "'"""' EX•TINOCOtOTIONa TO IE ne..ovawm CARLSBAD, CA 0'42 COSTCO \M-tOLESALE CORPORATION ------~ PERMIT ISSUE ® . -. ' • --=------- ~ 1~••PlAH SD101 ·llLU I I ---------------- I I L__ SITE PLAN _\ KEYNOTES EJ ---~-.., _____ ... _ "'~-El ---@---GJ--8 :::::=::::----~ B -·-··-·-·-··~--G -.. -0--·---\__\ )~' ,~-==:·-- ~-~lrrh--,-~~-=-r~ 1~:~i~ I / ~-------0;;;;: --@ I [3 :::.-:::..-=.-.• -@ 0------[!l·-191--·---0-..... -...... 0--·-·- FUEL FACILITY SIGNAGE 0-----M-- GENERAL NOTES ..... ---·--=--· ... -_____ .. _ .. ______ _ .....-.-~·--.. ---· ·---·----· .. C.M-._000 ____ _ .. ___________ _ -~-.. _______ _ ··=-~~"""'= ... -=.-::::.=· ·-111----·-------------·-----· --·----~=-~--:~";~ ····--.. ....r.--·----·-..... -... '~..:-,,..:,·--... ____ .. ____ _ ___ .. ______ ,,,_ -·----1.. ________ _ =--.-.. --...... ... _,, __ , ____ _ -·-.. ·-----!Jlol'll'f WMIIM __ _...,,. ....... --ll _________ _ ··---·-·--· ------·---.... -____ .. ___ ""_ CARLSBAD, CA ffl2 COSTCO WHOLESALE CORPORATION ...... _. ---t~IUIDI - PERMIT ISSUE $ ® . -. -•-·-,- ~ l~••r-N AG-1 Appendix3 BMP /Water Quali1y Plan 1 EX. DETENTION BASIN Appendix4 Educational Material Non-Stormwater Discharges Description tt tft • Uomdle>lrl t ~ I Tr~ tm trt Fa, ·uty Non-stonnwater discharges are those flows that do not consist •n jr ly ofstonnwa cr. Som ~ non-stonnwa r dj · lunges do no include pollutants and may be discharged to the stonn drain Th ~s ·include un ontarninat d grounch,•at ~rand nabmd spring ·. Th a also some non-storrnwa cr discharg s that typi ally do not contain pollutants and may be discharged to the stoml drain with ondi ions. Th s in tude ear washing, air con<Ulion r condensate, etc. However there are certain non-stonnwater discharges that po • nvironm ntal onccrn. Thl~S dis' harg s may originate from illegal dumping or from internal floor drains, apJllian s, industrial proc ssc·s, sinks, nd toil, · that arc connected to the nearby storm drain~e system . These discharges (which may include: procc. s wast wat rs, cooling waters, wash waters, and sanitary wastewater) can carry su h;tauc •s such as paint, oi\ fu 1 and otlt •r automotiv flu ids, chemicals and other pollutants into storm drains. They can generally be detected through a combination of detection and limina.tion. Th nltirna. cgoal is o ct'ltwti" ly ~Hrnina 'non- stonnwater discharges to the stonnwater drainage system through imp I ·menta ion oftn asur s to del c , corn! t> nd enforce against illicit connections and illegal discharges of pollutants on ~tr ts and into th'storm drainS)' Pm and c.~ "ks. Approach Initially the industry must make an assessment of non- stonnwater discharges to determine which types must be lilninfl.lcd or addressed through BMPs. Tht! focus oft he following approach is in the elimination of non-stormwater dis •hf.trg s. January 2003 California Stom1wa1J.!r BMP Handbook lndu:.1rl~l arid C<>mr1)Ct Ia I WWW.(!abrlplldl'ldhO()~.COIIl SC-10 Objectives • Cover • Cortain • Ed~ae • ReduceJMinimize • Product Slbstit\Aion Targeted Constituents Sediment Nlbierts ./ Trash Metals ./ Bacteria ./ Oi and Grease ./ Organics ./ 1 ofu SC-1() Non-Stormwater Discharges Pollution Prm,ention • Ensure that used oil, used antifreeze, and hazardous chemical recycling programs are b('ing implemented. Encourage litter control. Suggested Protocols Rrcommended Complaint Investigation Equipment • Field Screening A . .nal~rsis pii paper or meter Co:mmerdal stormwater pollutant screening kit that can detect for reactive phosphoms, nitrate nitrogen, ammonium nitrogen, specific conductance, and turbidity Sample Jars Sample collec-tion pole A tool to remove access hole covers • Laboratory Analysis Sample cooler Sample jars and labels Chain of c11stodv forms • Docnmi."ntation Camera Notebook Pens Notice of\riolation forms Educational materials Geneml • DO?\•elop clear protocols and lines of communication for effective!)• prohibiting non~ stormwater discharges, especially thos0 that an' not classified as hazardous. These are often not responded to as effecth-elv as tlwy need to be. • Stencil or demarcate storm d.rah1s, ,.,·here apphca ble, to prevent illegal clisposal of pollutants. Storm drain inlets should have me~sages such as "Dump No ·waste Drains to Stream'' stenciled or demar{'aterl next to them to ·warn against ignorant or intentional dmnving of pollutants into the storm drainage svstem. 2 of 6 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com January 2003 SC-10 N<>n-Stormwater Discharges ----~--------------------------------------------------------------------------- • See SC44 Stormwater Drainage S~·stem Maintenanee for additional information. Illicit Connections • Loeate discharges from the industrial storm drainage system to the munitipal storm drain systt'm through revie>v of ''as~built" piping schematics. • Isolate problem areas and plug illicit discharge points. • Locate and evaluate all discharges to the inrlustrial storm drain system. Visual Inspection and Inventory • lmentory and inspect each discharge point during dry weather. • Keep in mind that drainage from a storm event ean continue lor a day or t\vo iollo\\ing the E•nd of a storm and groult(hvaler may infiltrate the underground stormwater collection system. Also, non~::;tormwater di::>charge::; are often 1ntennittent and may require periodic. inspections. Reu.iew infield Piping • ;\review of the'' as-built'' piping schematic is a way to detel'mine if there are any connections to the slonnwaler collection system. • Inspect the path of floor drains in older buildings. Smoke Testing • .Smoke testing ohvaste\vater and stormwater collection systems is used to detect connections between the nvo systems. • Dming dry weather Lhe slormwaler collection system is filled vdth smoke and then traced to sources. The appearance of smoke at the base of a toilet indicates that there ma:v be a connection between the sanitary and the stormwater system. Dye Tesh'ng • A dye test can be performed by simply releasing a dye into either your sanitary or process wastewate1· system and examining the cli:scharge points from the storm water collection system for uiseoloration. TF Inspection ofDraiuage System • TV Cameras can be employed to 'isually Identify illicit C'(ll1neetions to the industrial storm drainage system. Illegal Dumping • Regulal'iy inspect and dean up hot spots and other stol'm drainage areas \vhere illegal dumping and disposal occurs. • On pmed surfaces, clean up spills with as little \Vater as possible. Vse a rag tor small spills, a damp mop for general cleanup, and absorbent material for larger spills. If the spilled material is hazardons, then the used cleanup matt-rials are also ha7.ardons 8 nd mnst be sent to a certifiEYllanndrv (rags) m· disposed of as ha?.ardons waste. ---~----------------------------------------------------------------------------Jam.Jary 2003 California Stormwater B!•1P Handbook Industrial and Commercial www.cabmphandbooks.com 3 of 6 SC-1() Non-Stormwater Discharges • Never hose down or bury dry material spills. Sweep up Lhe material and dispose of properly. • Use adsorbent mate1ials on small spills rather than hosing down the spill. Remm·e lhe adsorbent materials promplly and dispose of properly. • For larger ~pill~. a private ~pill cleanup company or Hazmat team may be necc-:s!'>ary. f) nee a site has been de<med: • Post "No Dumping" signs ·with a phone number for reporting dumping and disposal. • Landscaping and lwautification eff011~ of hot spot~ may also di~courage fntnre dumping, a~ well as prm·iclc O]X'll spacc and increasc property values. • Lighting or barriers may also be needed to discourage fulnre dumping. • .See fact ~hect SC11 Spill Prevention, Control, and Cleanup. Inspection • Rcgul~~rly in~pect and clean up hot spots and other storm drainage arcas where megal dnmping and dispo~al occurs. • Conduct field invesligations of the indnslrial slonn drain system for potenlial sources of non-slmmwaler discharges. • Pro-actively condnct investigations of high priority areas. Based on historic2l data, prioritize specific geographic areas and/or incident type for pro-active investigations. Reporting • A <'lata base i~ uscfnl for defining and tracking the magnitndt:> and location of the problem • Report prohib1ted non-storm,.,mter d1st:harges observed during the course of normal daily activities so they can be investigated, contained, and eleaned np or eliminated. • Document that non-stonnwaler discharges haYe been eliminated by recording tests perfonnec.L methods nsed, dales oftesting, and any on-site drainage points observed. • Document and rrport annually the remits of the program. • Maintain documentation of illicil conneetion and illegal dumping ineidenls, indnding significant conditionally exempt discharges that are nol properly managed. Training • Tralnmg of technkal staff in identifying and documenting illegal dumping incidents is reqnirE·d. • Consider posting the quick reference table near storm drains to reinforce training. • Train employees to identify non-storm,vater clisch<nges and report discharge~ to the apptopriate Jepartmenls. 4 of 6 California Stormwater BfVlP Handbook Industrial and Commercial www,cabmphandbooks,com January 2003 Non-Stormwater Discharges SC-10 • Educate employees about spill prevention and eleanup. • Well-trained. employees can rednce hnman errors that lead to acciuental releases or spills. The employee should have the tools and knowledge to immediately begin cleaning up a spill shonld one occnr. Employees shonld be familiar w·ith the Spill Prewntion Control and_ Conntermeasnre Plan. • DPtermine and implement appropriate outreach efforts to reduce non-permissible non- stormwater discharges. • Conduet spill response drills annually (if no events ocemred to evaluate your plan) in cooperation V•li th other indnstlies. • \Vhen a rPsponsible party is identified, educate the party on the impacts of his or her ;wtions. SpiU Response and Pret,enlion • See SC11 Spill Prevention Control and Cleanup. Oth:(.">:f" Considerations • J\hny facilities do not have accurate, up-to-date schematic drawings. Requirements Cos:ls (including capital and operation & mainlenruwe) • The primary cost is for staff time and depends on how aggressively a program b implemented. • Cost for containment and disposal is borne by the discharger. • Illicit connections can be clifticult to locate especially if there is groundwater infiltration. • Indoor t1oor drains ma:v require re-plnmbing if cross-eonnections to storm drains are detected. Maintenanc-e (including culministrath'e mul staffing) • Illegal dumping anrl illicit conrwction violations reqnires technical staff to detect and itl\'estigate them. Supplemental Information Fl.tJrther Detail of tlw BJl,1P Illeyal Dumping • Substances illegally dnmped on streets and into the storm drain systems and creeks inclnde paints, nsed oil and other antomotin· tluids, constrnction debtis, chemicals, fresh eon crete, leaves, grass elippings, and pet wastes. All of these ·wastes cansc stormwatf>r and rceeiving water qualit.v problems as well as clog the storm drain system itself. • Establish a system for tracking incidents. The system should be designed t,·l identifv the following: Illegal clnmping hot spots -------------------------------------------------------------------------------Jaluary 2003 California Stormwater BJVlP Handbook 5 of 6 Industrial al'ld Commercial www cabmphandbook:;.com SC-10 Non-Stormwater Discharges Types and quantities (in some rases) of wastes Pattems in time of OC'Cl11Tence (time of Jay/night, month, or year) J\1ode of dumping (abandoned containers, "midnight clumping" from moving vehicles, direct dumping of materials, accidents/spills) Responsible parties One of the keys to success of reducing or eliminating illegal dumping is increasing the number of people at the facility '\vho arE' aware of the problE'm and who have the tools to at least identify the incident, if not correct it. ThereforE', train field staff to recognize and repo11 the inciuents. \N'hat constitutes a "non-stormwater" discharge? • Non-storm\vater discharges to the stormwatE'r collection system may include any water used direetly in the manufacturing proC'ess (process wastewater), air conditioning conuensate and coolant, non-contact cooling water, cooling equipment conuensate, outuoor seeondary containmE'nt water, vehide and equipment wash water, sink anu drinking fountain vvastewater, sanitary wastes, or othE'r wastewaters. Permit Requirements • Facilities subject to stormwater permit requirements must include a certification that the stonnwater collection system has been tE">ted or evaluated for the presence of non- stormwater discharges. The StatE''s Genera! Industrial Stormwater PE'rmit requires that non- storm,vater dis~hargPS be eliminateu prior to implementation of the fa~ilit~y's S\VPPP. Performance Evaluation • RE'view annually internal investigation results; assess whether goals were met and what changes or improvements arE' necessary. • Obtain ti.c>edback from pcrsonnrl assigned to respond to, or inspect for, illicit comwctions and illegal clumping incidents. Referen,ces and Resources California's Nonpoint Sourc·e Program Plan http:/ (\\WW. swrcb.ca. govjnps /index. html Clark County Storm Water Pollution Control31annal http: I /w,vw.co.dark.wa.\Is/pnbworks/bmpman.J)(U King County Storm \Vater Pollntion Controll'viannal http://dnr.metrokc.gov/wlr/clss/spcm.htm Santa Clara Valley lJrban Runoff Pollntion Prevention Program http:ljwwv.·.srvnrppp.org ThE' StorF1 'Vater 1\Ianagers Resource Center htt}J :J/>vww .stormwatercenter.net/ 6 of 6 California Stormwater BfVlP Handbook Industrial and Commercial www .cabmphandbooks.com Jcnuary 2003 Description Ma.ny activiti ~that oc~ur at an induslti4ll or commercial site have the potential to cause accidental or illegal spills. Pr porali<>n for ae<:idental or illegal ~pill~ with proper training and reporting systems implemented, can minimize the discharge of pollutants to the environment. Spills and leaks arc oneoflhe largest contributorsofstormwaler pollutants. Spill pre\'ention andcontJ'OI plans are applicable to any site at which hazardous materials are ~lored or used. An effective plan should have spill prevention and response pl'O(;-edures that identjfy potential spill areas, specify material hondJing procedures. describe spill rcspon. procedures~ ond provide spill dcan-u p equipment. ·rhc plan should take steps to identify and choroctcrizc potential spills. eliminate and reduce spill potential, respond to spills when the) occur in an effort to prevent polluUmts from entering lhe stormwuler drainage :;)•stern~ and tJ-ain personnel to prevent and conb'Ol futut-c spills. Approach l7ollution Prevention • Devclo)> J>l~du Lop vent/mitigate spill. to storm drain systems. D vclop and standnrdi1.c reporting procedures, containment, storage, and disposal activities, documentationt and tOHow-up procedures. • Develop o Spill Prcv ntion Cont't'Ql and Countemtcasurc (SPC ') J>]an. The plan should include: lan~Jllry 2003 Errata4·06 Cbliforria Storrnwaw BMP Handl:»ok lnctJstrial and Commercial www.cabmphandbooks.com Objectives • CQ\oer • OOJltain • Educate • R~ceJMinimize • Product Sli>sfitutiln Targeted Constituents Seament Nutrie s Trasb Metals rt1 88Cteria Oil andQease rt1 Organics ~ SC-1 :1 Spill Prevention, Control & Cleanup Description of the facility, owner and address, activities and chemicals present Fadlity map Notification and evacuation procedures Cl~:·anup instructions Identification of responsiblE> departments Identify key spill response }Jf'rsonm•l • Recycle, reclaim, or reuse materials ·whenever possible. This will reduce the amount of process materials that are brought into the facility. Suggested ProtocoL-; (including equipment needs) Spill PreV<"!i'ltion • Develop procedures to prevent/mitigate spills to storm drain systems. Develop and standardize reporting procedures, containment, storage, and disposal activities, documentation, and follow-up procedures. • If consistent illegal dumping is observed at the facility Post "No Dumping'' signs with a phone number for reporting illegal dumping and disposa 1. Signs shonld also indicate fines and pen a ltics applicable for illegal dumping. Landscaping and beautification efforts ma:v also discourage illegal dumping. Bright lighting andjor entrance barriers may also be needed to discourage illegal dmnping. • Store and con tam liquid materials in such a manner that if the tank is ruptured, the contents wtll not discharge, l1o\-v, or be washed into the storm drainage system, surface '"'aters, or groundwater. • If the liquid is oil, gas, or other materi.al that separates from and floats on water, install a spill mntrol de\:ice (such as a tee section) in the catch basins that collects runoff from the storage tank area. • Routine maintenance: 2 of 9 Place drip pans or absorbent materials beneath all mounted taps, and at all potential drip and spill locations during filling and unloading of tanks. Any colleeted liquids or soiled absorbent materials must be reused/req·cled or pi·trperly disposed. Store and maintain appropriate spill deannp materials in a location kno\vn to all near the tank storage area; and ensme that employees are familiar with the site's spill control plan andjor proper spiB cleanup procedures. Sw12·ep and elean the storagE> area monthly if 1t is pa\'ed, do not hosf! down lhr urE'a to a slrmn drain. California Storrnwater B!vJP Handbook Industrial and Commercial www,cabmphandbooks,com January 2003 Errata 4-06 Spill Prevention, Control & Cleanup SC-11 CheC'k tanks (and any C'ontainment sumps) daily for leaks ancl spills. ReplaC'e tanks thal are leaking, corroded, or othenvise deteriorating with tanks m good C'ondition. ColleC't all spilled liquids and properly dispose of them. • Label all containers according to their contents (e.g., solvent, gasoline). • La bel hazardous substances rcgardin,g the potential hazard (corrosive, radioactive, tlammablc, cxplosi\'c, poisonous). • Prominently di5play required labels on transported hazardous and to.:'lie materials (per US DOT regulations). • Identify key spill response personnel. Spill Control and Cleanup Activities • Follow the Spill Prevention Control and Countermeasure Plan. • Clean up leaks and sp111s immediately. • Place a stockpile of spill cleanup materials where it \Vill be readily accessible (e.g., near storage and maintenance areas). • On paw~d surfaces, clean np spills \vith as little watf'r as possiblf'. Usc a rag tor small spills, a clamp mop tor general clc-annp, and absorbent material for larger spills. Ifthc spiHed matc1ial is haz.ardons, then the nsed cleanup matc1ials arc also hazardous and mnst be sont to a certified lanndry (rags) or disposed of as har,ardons \Vastc. Physieal nwthods for the c·leanup of dry chemicals include the use of brooms, shO\'Cls, sweepers, or plows. • Never hose down or bury dry material spills. Swet:>p np the malerial and dispose ot properlv. • Chemical cleanups of mate1ial can be achieved \Vith the-use of adsorbcnts, gels, and foams. Use adsorbent materials on small spills rather than hosing dmvn the spill. Remove the adsorbent materials promptly and dispose of properly. • For larger spills, a private spill cleanup company or Hazmat team may be nt'eessary. Reporting • Report spills that pose-an immediate threat to hnman health or the environment to the Regional \NatC'r 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 8o0-424-88o2 (24 hom). • Report spills to local agcnC'ies, such as thc· fit·c department; they can assist in ck·annp. • Eslablbh a system for tracking incidents. The system should be designed to identifv the following: Types and quantities (in some cases) ofv . .rastes Patterns in time of oecmTence (lime of day/night, month, or year) Ja1uary 2003 Errata 4-06 California Stormwater BI'1P Handbook Industrial and Commercial www,cabmphandbooks com 3 of 9 SC-11 Spill Prevention, Control & Cleanup ~lode of dnmping (abandoned containers, '"midnight dumping" from mO\ing vehicles, direct dumping or materials, accidents/spills) Responsible parties 11-u-ining • Educate employees abont spill prewntion and cleannp. • Well-trained employees can reduee human errors that lead to accidental releases or spills: The employee should have the tools ;md knoviledge lo immed1ately begin cleaning up a splll shonld one ocenr. Employees should he familiar with the Spill Prevention Control and Countermeasure Plan. • Empluyees should be educated about aboveground storage tank requirements. Employees responsible for aboveground storage tanks and liquid transfers should be thoroughh' familiar \\·ith the Spill Prevention Control and Countermeasure Plan and the plan should be readilv available. • Train Employees to recognize and report illegal dnmping incidents. Other Considerations (Vmitatiott..<; mul Regulations) • A Spill Prevention Control and Countermeasure Plan (SPCC) is required for facilities that are snbject to the oil pollution J·egnlations specified in Part 112 of Title 40 of the Code of Federal Regulations or if the:v have a storage capacity of 10,000 gallons or more of petroleum. (Health and Safety Code 6.67) • State regulations also exist for storage or hazardous matetials (Health & Safety Code Chapter 6.95), inclmling the preparation of area and business plans lor emergency response to the releases or thr('atcn('d releases • Consid1e:'T requiring smaller secondary containment areas (less than 200 sq. ft.) to be c.onnected to the sanitary se'lver, prohibiting any hard conne-ctions to the storm drain. Requirements Costs (ineludiug capital and operation & uurinlenance) • \Vill vary depending on the size of the lacility and tlw necessary controls. • Prevention of leaks and spills is inexpensive. Treatment andjor disposal of contaminated soil or ·water ean be quite expensive. 1Haintcnance (including culministratine and staffing) • This Bl>v1P has no major administrative or staffing requirements. However, extra time is needed to properly handle and dispose of spills, which results in increased labor C<lsts. 4 of 9 California Stormwater B!VlP Handbook Industrial and Commercial www .cabmphandbooks.com January 2003 Errata 4-06 Spill Prevention, Control & Cleanup SC-11 Supplemental Information J<~urtlwr Detail o..ftlw BiHP Reporting Rr(~ord keeping and internal reporting represent good operating practices bec·ausf' they can increase the efficiency of the facility and the effecti\'Cn ess of Bl\I Ps. A good record keeping system helps the facility minimize incident rf'currence, correctly respond with appropriate dca n np activities, and comply with I ega I roquirem0nt'> A record keeping and reporting system shonld he set up for documenting spills, leaks, and other discharges, including discharges of hazardous snbstances in reportable quantities. Incident records describe the quality and quantity of non~stormwater clischa rges to the storm se,ver. These records should contain the following information: • Date and time of the incident • Weather conditions • Duration of the spill/leak/discharge • Cause of the spillfleakjdischarge • Response procedures implemented • Pen;om; notified • Environmental problems associated with the spilljleakjdischarge Scpa rate 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 in~pection wa~ performed • Name of the inspector • Hems inspected • Problems noted • Corrective action required • Date corrective action was taken cnlwr mC'ans to doenment and record inspection results are field notes, timed and dated photographs, videotapes, and drav.ings and maps. A.hoveground Tank Leak and Spill Control i\e1::id ental releases of materia Is from a bov egronnd liquid storage tanks present the potential for contaminating stormwater with man:v different pollutants. Materials spilled, le<J ked, or lost from ----------------------------------------------------------------------------January 2003 Errata 4~06 California Stormwater Bl'1P Handbook Industrial and Commercial www.cabmphandbooks,com 5 of 9 SC-11 Spill Prevention, Control & Cleanup tanks may accumulate in soils or on impervious surfaces and be earned a\vay by storm water runoff. The most ·~ommon causes of unintentional releases are: • Installation problems • Faihw:'! of piping systems (pipes, pumps, t1anges, couplings, hoses, and valves) • External corrosion and stmctural failurE' • Spills and ov('rfills dnc to operator error • Leaks during pumping of liquids or gases from truck or rail car to a storage tank or vice versa Storage ot reactive, ignitable, or tlammable liquids should comply ·with the Uniform Fire Code and thr National Eleetric Code. Practices listed below should be employed to enhanc~e the code requirement'>: • Tanks should be placed in a designated area. • Tanks located in areas where firearms are discharged should b(' encapsulated in concrete or the equivalent. • Designated areas should be impervious and paved with Portland cement concrete, free of cracks and gaps, in order to contain leaks and spills. • Liquid materials should bE' stored in lJL approved double wa llPd tanks or smTounded b:r a curb or dikE' to provide the volume to contain 10 pE-rcent of the volume of all of the mntainPrs or 110 percE-nt of the volume of the largest container, \VhichevPr is greater. The area insidE' thE' curb should slopE' to a drain. • For used oil or dangerous waste, a dead-end sump shonld be installed in th(' drain. • All other liquids should be drained to the sanitary sewer if available. The drain must have a positi,·e control such as a lock, valve, or plug to prevent release of contaminated liquids. • Accumulated stormwatcr in petroleum storage areas should bt" passed through an oil/water sPvarator. Mamlena nee is critical to preventing leaks and spills. Conduct routine inspections and: • Check for extPrnal corrosion and structural laihu·e. • Check for spills and overfills due to operator error. • Check for failure of piping svstem (pipes, pumps, nanger, COltpling, hoses, and valves). • ChPck for leaks or spills dming pumping of liquids or gases from trnc.k or rail cart,:, a storage facilit1' or vice versa. 6 of 9 California Stormwater B!"lP Handbook Industrial and Commercial WW\to.' cabmphandbooks,com January 2003 Errata 4-06 Spill Prevention, Control & Cleanup SC-11 • Visually inspect new tank or container installation for loose fittings, poor welding, and improper or poorly filled gaskets. • Inspect tank foundations, connections, coatings, and tank •.valls and piping system. Looh. for corrosion, leaks, cracks, scratches, and other physieal damage that may 'veaken the tanh. or container system. • Frequently rcloeatc accumulated stormwatcr during the wet season. • Periodically conduct integrity testing by a qualified professional. Vehicle Leak and S'pill Control !vbjor spills on roathvays and other public areas are generally handled by highly trained Hazmat teams from local fire departments or environmental health departments. The measmes listed below pertain to leaks and smaller spills at vehicle maintenance shops. In addition to implementing the spill pre,'ention, control, and clean up practices above, use tho following measures related to specific actidties: Vehicle and Equipment Maintenance • Perform all vehicle flnid removal or changing inside or under cov0r to prevent the run-on of stormwater and the runoff of spills. • Regularly inspect vehicles and equipment for leaks, and repair immediate!;·. • Check incoming vehicles and equipment (including deliwl}' trncks, and employet' and subcontractor vehicles) for leaking oil and fluids. Do not allow leaking vehicles or equipment onsitt'. • Always use secondary containment, sueh as a drain pan or drop doth, to catch spills or l0aks when removing or changing fluids. • Immt'diately drain all l1uids from wreeked whieles. • Store wrecked n:~hicles or damagell equipment under cover. • Place drip pans or absorbent mat0rials under heavy equipment v.:hen not in use. • Use adsorbent materials on small spills rather than hosing down the spill. • }{emove the adsorbent materials promptly and dispose of properly. • Promptly transfer used fluids to the proper waste or rt'C'_yding drnms. Don't leave full drip pans or other open containers lying around. • Oil filters dispos0d of in trashc<Ins or dumpsters can leak oil and contamin:'ltc stormwatcr. Plac0 the oil filter in a funnel m'er a "INaste oil recycling drum to drain excess oil before disposal. Oil filters can also bt' recyclc'd. Ask yonr oil supplier or r0c~·eler a bout r0cycling oil filters. January 2003 Errata 4-06 California Stormwater BHP Handbook Industrial a!"ld Commercial www .ca bmpha nd books .com 7 of 9 SC-11 Spill Prevention, Control & Cleanup • Store cracked batteries in a non-leaking secondary container. Do this with all cracked batteries, even if you think all the add has drained out. If you drop a battery, treat it as if it is cracked. Put ]t into the containment area untll you are snre ]tis not leaking. Vehicle and Eqtlipment Fueling • Design !the fueling area to prevent the run-on of stormwater anclthe rnnoff of spills: Cover fueling area if possible. Usc~ a perimeter drain or slope pavement imvarcl '~ith drainage to a sump. Pave fueling area '""-ith concrete rather than asphalt. • If dead-end sump is not used to collect spilL.:;, install an o11jwater separator. • Install Yapor recovery nozzles to help control chips as well as air pollution. • Discm:rage "topping-off of fuel tanks. • Use s0~ondary containmmt when transferring fud from the tank trnck to the fuel tank. • lJse adsorbent mate1ials on small spills and general deaning rather than hosing down the area. Remove the adsorbent materials promptly. • Carry out all Federal and State requirements regarding underground storage tanks, or install abm·e ,ground tanks. • Do not use mobile fueling of mobile industrial equipment around the facility; rathrr, transport the equipment to designated fueling areas. • Keep your Spill Pn•vention Control ancl Countermeasure (SPCC) Plan up-to-date. • Train employers in proper fueling and cleanup procedures. Industrial Spill Prl:'vention Response For the pm·poscs of den~] oping a spill prevention and response program to meet tlw stormwater regulations, facility managers should nse information provided in this fact sheet and the spill pre\'f'ntion/rf'sponse portions ofthe fact sheets in this handbook, for specific activities. The program should: • Integrate \vith existing emergency response/hazardous materials programs (e.g., Fire Department) • Develcp procedures to prevent/mitigate spills to storm drain systems • Jdentil): rf•sponsible departments • De\·elcp and standardize rep011ing procedures, containment, storage, and disposal acti\'itles, documentation, and follow-up procedures • Address spills at mnnicipal facilities, as well as publi<' areas 8 of 9 California Stormwater Bfv!P Handbook Industrial and Commercial WWI".' .cabmphandbooks.com January 2003 Errata 4-06 Spill Prevention, Control & Cleanup SC-11 • Pro"ide training concerning spill prevention. response and cleanup to aU approptiate per-.onncl References and Resources California's Nonpoint Source Progl'am Plan http://www.swt·cb.ca.go,·/nps/index.html Cl.ark Coun ty Storm Wat ,. Pollution Control Manual http: tlwww.co.dark. wa,us/pubworkstbropman,pdf King ())unty Storm Water Pollution Control Manual bUJ?:IIdnr.me\rokc,gov/wlr/dss/sm•m,hlm Santa Clara VaUey Urban RunoffJ>oUution t>revention Program http:/lwww,scvumpp.or& The Stormwater l\•lanagers Resource Centet· bttv:flw'm:~atormwate~ota.pet/ )anuary 2003 Efrnt;, 4•06 Callforn Stormwaw Bt.IJP Handbook Industrial and Commercial www.cabmphandbooks.ccm 9of9 Waste Handling & Disposal Description Jmprop r stor~" and handling of solid wast"s can allow toxi' compounds, oils and greases> heavy met.·\ls, nutrients, suspended so lid.s, and oth r pollutants to enter stonnwat ~r runoff. The disclk1.rge of pollutants to stormwaterfrom waste handling and disposal c n h prevented and ~du d by tracking wast generation, storage, and disposal; reducing waste generation and disposru lhrouglt source reduction, r~use> and r~ ycling; and preventing run-on and runoff Approach l'ollutioJtl ?evetatioJt • Accomplish reduction in the amount of wast genera eel using the following source coutrols: 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 usag". Tbis ruay 1 due spills and minimize contamination, thus reducing the an1ount of waste produced. • Recycle materials whenever possible. January 2003 California Stormwarer BMP Handbook Indu!itrifll and C<>rnmcrcl(ll www .ca~r)lltl ndl)()()k.-;.com SC-34 Objectives • Cover • Contain • Educae • ReduceJMinimize • Product Slbstitution Targeted Constituenu Sediment Nulrierts Trash Metals ,/ Bacteria ,/ Ol MdGrease ,/ Organics ,/ 1 or !i SC-34 Waste Handling & Disposal Suggested Protocols General • Coyer storage containers with leak proof lids or some other means. If waste is not in containers, cover all waste piles (plastic tai1JS are acceptable coverage) and prevent stormvvater run-on and runoff with a berm. The waste containers or piles must be covered except when in u5e. • Use drip pans or absorbent materials whcncn~r grease containers ar<> 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 thallicls are on tightly. Replace any that are lc'<lking, corroded, or otherwise dete1iorating. • s,veep and clean the storage area regularly. If it is pm·ed, do not hose down the area to a storm drain. • Dispose of rinse and wash water from cleaning waste rontai ncrs into a sanitary sewer if allowed by the local sewer authority·. Do not discharge 'vash ·water to the street or storm drain. • Transfer vvaste from damaged containers into safe containers. • Take special care when loading or unloading vvastes to minimize losses. Loading systems can be used to minimize spills and fugitive emission losses sneh as dnst or mist. Vacnum transf,~r systems can minimize waste loss. Controlling Litter • Post "\.Jo littering'' signs and enforce anti-Jitter laws. • Pro\·idE> a sufficwnt number of htter receptacles for the facility. • Clean out and coyer litter receptacles frequently to prevent spillage. lVaste Collection • Keep ',vaste collection areas clean. • Inspect solid waste containers for structural damage regularly. Repair or replace damaged c~ntaincrs as necessary. • Seenre solid waste containers; containers must be dosed tightly when not in use. • Do not fill waste containers with washout 'vater or any other liquid. • Ensure that only appropriate solid wastes are aclded to the solid waste container. Cerlain \vastes such as hazardous wastes, appliances, fluorescent lamps, pesticides, etc., mav not be dispo;.;t'd of in solid was le con tainer5 (see chemical/ hazardous waste collection section below). 2 of 5 California Stormwater BfvJP Handbook Industrial and Commercial vvww .ca bm phand books, com January 2003 Waste Handling & Disposal SC-34 • Do nol mix wastes; this can cause chemical reactions, make recycling impossible, and eomplkate disposal. Good Housekeeping • Use all of the product before disposing ofthe eontainer. • Keep the ·waste management area clean at all times by sweeping and cleaning np spills immediately. • Use dry methods when possible (e.g., s·weeping, use of absorbents) \vhen cleaning around rest;mrant/food handling dumpster areas If water must be used after swcPping/using absorbents, collect water and discharge through grease interceptor to the st>wer. ChemicaljHazardow> T'\lasles • Select designated hazardous waste collection areas on-site. • Store hazardous materials and wastes in coYered containers and protect them from vandalism. • Plaee hazardous waste containers in secondary containment. • l\·Iake sure that hazardons waste is colleetecl, removed, and disposed of only at authorized disposal areas. • :Stencil or demarcate storm drains on the facility's property with prohibitive message regarding waste disposal. Ru n-cm/Runoff Prevention • Prevent stormwater run-on from entering the \Vaste management area by enclosing the area or bnilding a berm around the area. • Pre\ent waste materials from directly contacting rain. • Cover waste piles with temporary covering material such as reinforceu tarpaulin, polyethylene, polyurethane, polypropyleneOL' hypalon. • Cover the area with a permanent roof if feasible. • Cover dumpsters to pre\·ent rain from washing waste out of holes or cracks in the bottom of the dumpster. • .\rlove the acti\itv indoor after ensuring all safety concems snch as 11re hazard and ventilation are addressed. Inspection • Inspect and replace faulty pumps or hoses regularly to minimize the potential of releases and spills. • Check >Ynste management areas for ]('a king contain('rs or spills ----~---------------------------------------------------------------------------January 2003 California Stormwater Bi'lP Handbook Industrial and Commercial www.cabmphandbooks.com 3 of 5 SC-34 Waste Handling & Disposal • Repair leaking equipment including valves, lines, seals, or pumps promptly. Trnininy • Train staff in pollution pren~ntion measures and proper disposal methods. • Train ':':mployees and eontraL1ors in proper spill containment and cleannp. The employee shonld have the-tools and knovvledge to imme-diately begin eleaning np a spill shonld one OCCllr. • Train ,o;mployces and subcontractors in proper hazardous waste management. Spill Response and Pret~ention • Keep your Spill Prevention Control and Countermcasnre (SPCC) Plan np-to-date. • Have an emergenc; plan, equipment and trained personnel reaclv at all times to deal imme(liatelv with major spills • Collect all spilled liqnids and properly dispose of them. • Store and maintain appropriate spill deannp materials in a location known to all near the designated wash area. • Ensure that vehicles transporting waste have spill prevention equipment that can prevent spills dnring transport. Spill prevention equipment includes: Vehicles equipped with baffles for liqnid waste Trucks with sealed gates ancl spill guards for solid waste Other Cmuriderntions (Limitations nnd Regulations) Hazardow; 1.\aste cannot be reused OJ" recycled; it must be disposed of bv a lieensed hazardous waste hauler. Requirtements Cosls Capital and O&M ('Osts for these programs \Yill vary substantially depending on the size of the fadlit~v and the types ofwastc handled. Costs shonld be low if there is ;m inventory program in pla('e, }Hninlenunce • None except for maintaining equipment for material tracking program, Supplemental Information Further Detail of the B2HP Land Treatment System l\'lmimize mnoff of polluted stormwater from land application by: • Choo~;ing a site where slopes are under 6%, the soil is permeable, there is a lmv water table, it is located away from wt>tlands or marshes, and there is a dosed drainage system _______ , ___________________________________________________________________ _ 4 of 5 California Stormwater BMP Handbook Industrial and Commercial \'<.'WW .ca bmphandbooks. com January 2003 Waste Handling & Disposal SC-34 • Avoiding application of waste to the site when it is raining or when the ground is saturated v,:ith water • Grmving vegetation on land disposal areas to stabilize soils and reduce the volume of surface 1.vater nuwff from the site • Maintaining adequate baniers between the land application site and the rcct'iving waters (planted strips arc particularly good) • tTsing erosion control techniques such as nmlching and matting, filter fences, slraw bales, diversion terracing, and sediment basins • Performing routine maintf'nance to ensure the erosion control or site stabilization m0asures are working Examples The port of Long Beach has a state-of-the-att database for identifying potential pollutant sources, documenting facility management practices, and tracking pollutants. Ref:erences and Resources California's Nonpoint Source Program Plan http:f/vnvw.swrcb.ca.gov/nps/index.html Clark County Storm \Vater Pollution Control Manual htt[L:/1\vww.co.dark.wa.us/pubworks/bmpman.pdf Solid Waste Container Best Management Practices-Fact Sheet On-Line Resonrces- Em·ironmental Health and Safety. Harvard University. 2002. King County Storm VVatPr Pollution Control Manual http://dnr.metrokc.gov/wlr/dss/spcm.htm Pollution from Stu-face Cleaning Folder. 1996. Bay Area Stormwater lVIanagement Agencies Association (BASJ\,L\A). http: I /w-...vw .basmaa .org Santa Clara Valley Urban Runoff Pollution Prevention Program http; 1/ww\v,sc\'Urppp.org The Storm Water l\,lanagers ResourC'e Center http://www.stormwatercentf•r.netl Janu2wy 2003 California Stormwater BMP Handbook Industrial and Commercial www .cabmphandbooks.com 5 of 5 Building &. Grounds Maintenance SC-41 Description Stonuwater runoff from building and grounds maintenance acliviti scan b " contaminat d with toxic hydrocarbons in solvents, fertilizers and pesticides, suspended solids, hea"''Y ml~t a1s, abnormal pH, and oil$ and gr as s. Utilizing tb protocols in tllis fact sheet will prevent or reduce the discharge of pollutants to stormwat •r fwrn lntilcling and grounds maintenance activities by washing and cleaniug up with as little water as })Ossibh., following good lai1dscap mauag-cm 'l1 practicest preventing and cleaning up spills .izmnediately, keeping d bris from nteri.ng the storm drains, and maintaining the Sl'Otmwat r coU ction ~yst~m. Approach Reduce potential for pollutant discharge through source control polloi ion prc:vcnlion artd BMP implernent..a ;ion. Successful implementation depends on effective training of employees on aPI)licablc l3!t.ilPli and g•ncrnl pollution prev ntion stra egies and objectives. l'oUution.Preve'lltion • Switch to non-toxic eh,rn.ieals for maint~naoce when possible. • Ch os cl"aning agents bat can b , rceycl )d. • En our age ptoper lavtn •nan~ mcnt and landscaping, including use of nati\re vegetation . .January 2003 California Stom1water BrotP Handbook ll'rdu!OI:rlttl artd C6mmcrcitll YIWW.Cfl~)(!lpll(llldt:xx>k:$.(:()rrt Objectives • Cover • Cortain • Educae • Reduce/Minimize • Product Stbstitution Targeted Constituents Sediment ./ Nulrierts ./ Trash Metals Bacteria Oi e11d Grease Organics SC-41 Building & Grounds Maintenance • Encourage use of Integrated Pest ~fanagemenl techniques for pest controL • Encourage proper on site recycling of yard trimmings. • Recycle residual paints, solvents, lumh0r, and other material as much as possible. Suggested' Protocols Pressure H"ashing of Buildings, Rooftops, and OthPr Large ObjPcts • In situations ·where soaps or detergents are used and the surrouniling area is paved. pressure washers mnsl use a water collection device that enables collection of wash waler and associated solids. A sump pump, wet vacuum or similarly effective device must be used to collect the runoff and loose materials. The c-ollected runoff and solids must be disposed of properly. • If soaps or detergents are not nscd, and the snrrounding area is paved, wash runoff tloes not have to he collected but must be screened. Pressure washers must usc filter fabrie or some other t:\TJe of screen on the gronnd a ndjor in the c,atch basin to trap the particles in wash water nmoff. • If you are pressure washing on a grassed area (with or without soap), runoff mHst be dispen;ed as sheet flow as much as possible, rather than as a mncentrated stream. The wash runoff must remain on the grass and not drain to pavement. Landscaping Activities • Dispos'" of grass clippings, leaves, sticks, or other wHeeled vegetation as garbage, or by composting. Do nut dispose of collected vegetation inlo waterways or storm drainage s:ystems .. • Usc mulch or other erosion control measures on ('),:posed soils. Building Repair, Remodeling, and ConstnLction • Do not dnmp any toxic substance or liquid vvaste on the pavement, the ground, or to,vard a storm drain. • ·use ground or drop cloths undernenth outdoor painting, scraping, and sandblasting \Vork, and properly dispose of collected material daily. • Use a ground cloth or oversized tub for activities such as paint mixing and tool cleaning. • Clean pa1ntbrnshes and tools eoverecl vvith ·water-based paints in sinks connected to sanitary se>vcrs or in portable containers that can be d 11m peel into a sanitary sC'wer drain. Brushes and tools covered with non~wa ter~based paints, finishes, or other materials must be cleaned in a m;mner that enables collection of used solvents (e.g., paint thinn('r, turpentine, etc.) for rerycling or proper disposaL • Use a storm drain cover, filter fabric, or similarly effectiYe runoff control mechanism if dust, grit, wash water, or other pollut<mts may escape the work area and enter a catch basin. This is particularly necessary on rainy days. The containment device(s) must be in place at the beginning of the work da:v, and accumulated di1ty runoff and solids m usl be colle.cted and disposed of before removing the containment device(s) at the end of the work day. 2 of 5 California Storrnwater BMP Handbook Industrial and Commercial WW'N .cabmphandbooks.com January 2003 Building & Grounds Maintenance SC-41 • If you need to de-water an excavation site, you may need to filter the water before discharging to a catch basin or off-site. If directed olf-site, you should direct the water through hay bales and niter fabric or use other sediment fillets or !taps. • Store toxic rna terial under cover during precipitation events and when not in use. A cover \vould include tarps or other temporary cover material. Mowing, Trimming, and Planting • Dispose of leaves, sticks, or other collected vegetation as garbage, by com posting or at a permitted landfill. Do not dispose of collected vegetation into waterways or storm drainage systems. • Use mulch or other erosion control measures whE>n soils arC' exposC'd. • Place temporarily stockpiled material away lrom watercourses and drain inlets, and berm or cover stockpiles to prevent materiall'eleases to the stotm d min s:vstem. • Consider an alternative approach when bailing out muddy \Vater: do not put it in the storm drain; pour over landscaped areas. • Use hand \Vet>ding where practical. Fertilizer and Pesticide lvfanagement • Follow all federal, state, and local laws and regulattons governing the use, storage, and disposal of fertilizers and pesticides and training of applicatots and pest control advisors. • Use less toxic pesticides that will do the job '<vhen applicable. Avoid use of copper-based pesticides if possible. • Do not use pesticides if rain is e:'l:pccted. • Do not mix or prepare pe1'-tiddes for application near stmm 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 dtift) of pesticides, including consideration of alternative applieation techniques. • Appl:v pesticides only '"'hen wind speeds arc low, • Fertilizers should be worked into the soil rather than clumped or bl'oadcast onto the smlare. • Irrigate slowly to prevent runoff and then only as much as is needed. • Clean pavement and sidewalk if fenilizer is spilled on these smfaees before applying irrigation 'vater. • Dispose of emptY pesticide containers aecording to the inslmctions on the c•1n ta iner Ia bt>l. January 2003 California Stormwater B!'lP Handbook Industrial afld Commercial www.cabmphandbooks.com 3 of 5 SC-41 Building & Grounds Maintenance • Use up the pesticides. Rinse containers, and use rinse water as product. Dispose ol unused pesticide as hazardous waste. • Implement storage requirements for pesticide products with guidance from the local fire department and County Ag1icultural Commissioner. Provide secondary containment for pestici.::les. Inspection • Inspect irrigation system periodically to ensure that the right amount of water is being applied and that excessive runoff is not occurring. Minimize exeess watering and repair leaks in the irrigation system as soon as they are ubsened. Training • Educa1<:' and train employees on pesticide-use and in pesticide application techniques to prevent pollution. • Train employees and contractors in proper techniques for spill containment and ch:anup. • Be sure the frequene; of training takes into account the complexity of the operations and th<:' nature of the staff. Spill Response and Prct,cntion • Keep your Spill PreYentiun Control and Countermeasure (SPCC) Plan up-to-date. • Place a stockpile of spill cleanup materials, such as brooms, dustpans, and vacuwn sweepers (if desired) near the storage area •.vhere it will be readily accessible. • Have employees trained in spill containment and dean up present during the loading/unloading of dangerous >vastes, liquid chemicals, or other materials. • Familiarize employees with the Spill Prevention Control and Countermeasure Plan. • Clean up spills immediately. Other Considerations Alternatih' pest/weed controls may not be available, suitable, or effective in many cases. Requirements Costs • Cost wtll \'ary depending on the type and size of facility. • Overall costs should be low in compa1ison to other BMPs, 11.1 ainl ew utee S\veep vaved areas regularly to collect loose particles. 'Vipe up spills with rags and otlwr absorbent material immediatC'ly, do not hose down the area to;] storm drain. 4 of 5 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com January 2003 Building & Grounds Maintenance SC-41 Supplemental Information Further Detail oftlteB2t1P Fire Sprinkler Line Flushing Building fire sptinkler line flushing may be a somce ofnon~stormwater runoff pollution, The \Vater enteting the system is nsna lly pota blc \Vater, though in somC' areas it may be non~pota ble red aimed wastewater. There arc 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 \Vater. Initially, th(• black iron pipe has an oil coating to protect it from rnsting benveen manufaC'tme and installation; this will contaminate the \Vater from the first tlush but not from subsE'quent flushes, Nitrates, poly~ phosphates ;md other corrosion inhibitors, as well as t!rc suppressants and antifreeze rna~· be added to the sprinkler wa tE'r system, \Vater generally remains in the sprinkler svstem a long time (ty'}Jically a year) and between flushes may accnmnlate iron, manganese, lead, copper, nickel, and zinc. The water generally becomes anoxic and contains living and d~·ad bacteria and breakdown products from chlorination, This may result in a significant I30D problem and the wa1er 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 levE'Is of pollutant'> in fire sprinkler lim• ·water References and Resources California's Nonpoint Source Program Plan http: I /\\.'1VW.swreb.ea,gov /nps/index.html Clark Connty Storm Water Pollution Control Manmd http: //ww1,v ,c·o dark. wa,us/pttb\vorks/bmpman.pdf King County Storm \Vater Pollution Controll\Ianual http://dnr.metrokc.gov/wlr/cl<;s/spcm.htm !\fobile Cleaners Pilot Program: Final EeporL 1997-Bay Area Stormv.:ater J\lanag(•ment Ag{·ncies Association (I3ASl\L\A} http: 1/v.:\nv ,basmaa,org/ Pollution from Surface Cleaning Folder. 1996. Bay A.rea Stormwater :Lvlanagement Agencies Assoeia tion (BAS:tvL:l...A). http: /1\VWIN. basmaa ,org/ Santa Clara Valley Urban RunoffPollntion Prcv(mtion Program http://ww\v.se,urppp,org The Storm \Vater JHanagers Resource Center http://wvvl-V,slormwatercenter.net/ January 2003 California Stormwater Bl'1P Handbook Industrial and Commercial www.cabmphandbooks.corn 5 of 5 Building Repair and Construction SC-42 Description ModHir..ations ar comm n t>artit~ulat•Jy at lartc industria1 sites. The acthtity may vary from minor and normal building repair to major remodeling, or th construction of new facilities. Th se activi ties r.an gcnetale poll utants including solvents, paintsJ painl and varnjsh removers, finishing residues, spent thinners~ soap cleaners. kcrosen ) , asphalt an(l concrete materials adhesive residues, and old asbestos insta11aHon. l)rotoco)s in tJtis fact sheet are intended to prevent or reduce the discharge .of pollutants to stormwater from build.ing repair, remodeling. and <..'Onst ructi n by using soil rosion con troJs. end ing or covering building material storage areas, using good housekeeping pra~.-'tices using safer alternative products, and training mploy~">S. Approach Po llution Preuention • Recyd residua) paints, s lvents, lumber, and ther materials to the maximum extent practical. a Buy recycled products to the maximum extent practical. • Tnform on-site contractors of CQmpany policy on these matters and include appropriate provisions in their contra ·t to ensur certain p per hous •k ping and disp sal practj s are implemented. J.anuaty 2003 Calllomla Storm tater BMP Handbook Industrial and Commerc:lat vlvlw.cabmpbandbooks,com Objectives • 00\<tr • Cofiain • Edlcafe • RedJcciMnimize • R~cle Targeted Constituents Setfment ,/ Nutrients Trash ,/ Metals ~ Bacteria OJ and Grease .( Organics ,/ SC-42 Building Repair and Construction • J'viake sure that nearhv storm drains are well marked to minim1ze the chance of inadvertent dispoHal of residual paints and other liquids. Suggest,'!.d Protocols Repair & R'emodeling • Follov~ Bl\1Ps identified tn Construction Bl'viP Handbook • Maintain good housekeeping practices w bile \vork is undenvay. • Keep the work site dean and orderly. Remove debris in a timely fashion. Sweep the are:-1. • Cover materials of particular concern that must be left outside, particularly during the rainy season. • Do not dump ·waste liquids dmvn the stmm ch·ain. • Dispose of wash 1vater, sweepings, and sediments properly. • Store materials properly that are normally used in repair and remodeling such as paints and solvents. • Sweep out the gutter or wash the gntter and trap the pa1iicles at the outlet of the clmvnspont if when repairing roofs, small particles hm·e accumulated in the gutter. A sock or geofabric placed owr the outlet may effeetively trap the materials. If the downspout is tight lined, place a temporary plug at the first convenient point in the storm drain and pump out the ·w:-1ter with a vactor tmck, and clean the cateh basin snmp where vou placed the plug. • Properly store and dispose waste materials generated from construction activities. See Construction DJ\1P Handbook. • Clean the storm drain system in the immediate vicinity of the construction activity after it is eompleted. Painting • EnclosJI2 painting operations consistent vvith local air qualitr regulations and OSHA. • Local air pollution regulations may, in many areas of the state, specify painting procedures which if properly c2.rricd out are usually sufficient to protect ·water quality. • De\ielop paint handling procedures for proper use, storage, and disposal of paints. • Transpmt paint and materials to and from job sites in eontainers with secure lids and tied down t,J the transport vehicle. • Test and inspect spray equipment prior to starting to paint Tighten all hoses and connections and do not overfill paint containers. • I\Iix pa1'nt indoors before using so that any spill will not be exposed to rain. Do so e1·en dnring dry weather bec~mse dean up of a spill wil1 ntTer Le 100% effel'Live. • Transf('r and load paint and hot thermoplastic away from storm drain inlets. 2 of 4 California Stormwater BfVlP Handbook Industrial and Commercial www .cabmphanclbooks.com Jar·,,_wry 2003 Building Repair and Construction SC-42 • Do not transfer or load paint near storm drain inlets. • Plug nearby storm drain inlets prior to starting painting and remon' pings whe-n job is complete when there is significant risk of a spill reaching storm drains. • Cover nearby storm drain inlets prior to starting work if sand blasting is tL<;ed to rem on: paint. • Use a ground doth to collect the chips if painting requires scraping 01" sand blasting of the existing surface. Dispose the residue properly. • Cover or enclose painting operations properly to avoid drift. • Clean the application equipment in a sink that is connected to the sanitary sewer if using water based paints. • Capture all cleanup-water and dispose of properly. • Dispose of paints c-ontaining lead or tribntyl tin and considered a hazardous waste propcrly. • Store leftover paints if they are to be kept for the next job properly, or dispose prope1·lv. • Recycle-paint when possible-. Dispose of paint at an appropriate household hazardous waste faeility. Training Proper edncation of off-site contractors is often overlooked. The conscientions efforts of well trained employees can be lost by unknowing off-site contractors, so make sure they are well informed about what they are expected to do. Spill Response and Pret,ention • Keep your Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date. • Place a stockpile of spill cleanup materials where it will be readily accessible. • Clean up spills immediately. • Exca\'ate and remove the contaminated (stained) soil if a spill occurs on dirt. Limitations • This BMP is for minor construction only Th(> State's General Construction Activity Storm,vatt'r Permit has more requirements for larger projects The companion "Construction B('st l\Janagemcnt Practice Handbook" contains specific guidance and best management practices for larger-scale projeets. • Hazardous waste lh<lt cannot be rensed or recyded must be disposed of by a license{} hazardous wasle hauler. • Be f'E~Itain that actions to help stornnvatcr qnality al'f· consistt>nt with Cal-and Feel-OSHA and air qnalitv regnbtions. January 2003 California Stormwater BivJP Handbook Industrial and Commercial www,cabmphandbooks_com 3 of 4 SC-42 Building Repair and Construction Requirements Costs These BJV!Ps are generally low to modest in cost. ",.,Jaintenancc N/A Supplemental Information Further Detail oft he B1k1P Soil/Erosion Control If the work involn''S exposing large areas of soil, employ the appropriate soil erosion and control techniques. See the Construction Best l\fanagement Practice Handbook. If old buildings are being torn down and not replaced in the near future, stabilize the sitE' using measmes described in SC-40 Contaminated or Erodible Areas. If a building is to be plaC\'.'d over an open area with a storm drainage system, make snr,• the storm inlets within the bnilding are covered or removed, or the storm line is connected to the sanitary s,;•1.ver. If because of the remodel1ng a ne>v drainage system is to be installed or th0 t>xisting system is to be modifit>d, consider installing cat0h basins as they serve as t>ffeetive ._in~ 11ne" treatment devices. Sec Treatment Control Fact Sheet TC<?.O \Vet Pond/Basin in Section G of the Ne'·" Den:>lopment and RecleYclopmcnt Hanclhook regarding design criteria. Indude in the catch basin a "'tnrn~down" elbow or similar device to trap t1oatables. References and Resources California's Nonpoint Source Program Plan http;//v.rww.swn;b.ca.gov/nps/index.html Clark County Storm Water Pollution Control ?v1anual hup:/!w,vw .co elark.wa.w;/pnbworb/bmpmun.pd f Kiug County Storm \Vater Pollution CoutrollVIanual http://dnr.metrokc.gov/wlr/dss/spcm.htm Santa Clara Va Jlcy Urban Runoff Pollution Prrvention Program http: 1/wwv; .sc~vurppp.or£ The Storm \Yater IVIanagers Resonree C'enter htDJ:/(\vlvw.stonmvatercenter.net/ 4 of 4 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com January 2003 Parking/Storage Area Maintenance SC-43 Descript ion Parking lots and storage areas can contribute a nwnber of suhstanr." · su h s ra.~h> ·u p •ndcd solids, hydro arl>ons, oil and grease, and heavy metals that can enter receiving waters through s ormw c1 tt,moff or non-tomtwa •r dh> harg s. Th protocols in this fact sheet are intended to prevent or reduce the dis •h8rge of pollutants from parking/storag ~a as nd in ·Jud • using good housekeeping practices, following appropriate ·lc lringBMPs, and tr itliug mployc ~. Approach Th goal oft his program i · to "nsur • :;tonnwat ·r pollution prevention practices are considered when conducting activities on or around parking areas and :;loragl~ an:~ to due;: pot ntil\1 for pollutant discharge to receiving waters. Successful implem n ationd p ndson ffi tiv trainingofemployc son applicable BMPs and general pollution prevention strategies and obj ctiv s. P(1llulicm Prevenlitm • Encourage alten1ative designs and maintenance strategies for imt, rviot.JS parking lo . (Se N w D vclOJlm n and R d "' lotlm nt BMP Handbook) a Ke •p acct)ra • maintenanc logs l(l cvalua c BMP implementation. Janl.k1ry 2003 California Stom1warer BfotP Handbook Indu:ltrlal And C<>mrncr 181 www .catx-rir>ha ndhcx)Jw.<:c;)m Objectives • Cover a Cortain a Educcte a RedlceJMirimize • Produc:t SlbstihAion Targeted Constituents Sediment ./ Nt.bierts Trash ./ Metals ./ Bacteria m and Grease ./ Organics ./ 1 of <1 SC-43 Parking/Storage Area Maintenance Suggested Protocols Ge11eral • Keep the parking and storage areas dean and orderly. Remove debris in a timely fashion. • Allovv sheet runoff to tlow into biofilters (vegC'tated strip and swale) and for infiltration devices. • Utilize sand filters or oleophilic collectors for oily waste in lo\V quantities. • ..:\rrange rooftop drains to prewnt drainage directly onto paved snrfaces. • Design lot to include semi-penneable hardscape. • Diseharge soapy watt>r remaining in mop or wash buckets to the sanitary sewer lhrongh a sink, toilet, dean-out, or \vash area with drain. Controlling Litter • Post ~No Littering" signs and enforee anti-litter laws. • Provirle an adequate number of litter receptacles. • Clean ,Jut and cover litter receptacles frequently to prevent spillage. • Provide trash reeeptaC'les in parking lots to disconrage litter. • Routinely sweep, shovel, and dispose of litter in the trash. Swjaee C{eaninq • Use dry deaning methods (t>.g., sweeping, vacuuming) to prevent the discharge of pollutants into the storm water conveyance system if possible. • Establish frt>quency of public parking lot s\vt>eping based on nsagt> and fieltl observations or wastt' accnm nlation. • S\veep all parking lots at least once before the onset of the \vet season. • Follow the procednrcs below if water is used to clt>an surfaces: Block the storm drain or contain rnnoff. Collect and pump wash water to the sanitary sewer or discharge to a pervious smfacP. DJ not allow wash ·water to enter storm drains. Dispose of parking lot sweeping cleblis and dirt at a landfill. • Follow th.;> procednres hclow when cleaning heavy oily deposits: 2 of 4 Clean oil;' spots with absorbent mate1ials. Use a screen or filtt>r fa brie over inlet, then wash snrfaces. California Storrnwater Bfv]p Handbook Industrial and Commercial www .ca bmphandbooks.com January 2003 Parking/Storage Area Maintenance SC-43 Do not allow discharges to the storm drain. Vacuum/pump discharges to a tank or discharge to sanitary sewer. Approptiately dispo~e of spilled materials and ab~orbents. Swfa.ee Repair • Preheat, transfer or load hot bituminous matetial away from storm drain inlet<;. • Apply eoncrete, asphalt, and seal coat during dry weather lo prevenl contamination from c:ontal'ting slormwater runoff • Cover and seal nearby storm drain inlets where applicable (vl'ith waterproof material or mesh) and manholes before applying sP..al coat, slurry seal, etc. Leave covers in place nntil job is complete and all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for proper disposal. • Use only as much water as necessary for dust mntrol, to avoid runoff. • Catch drips from paving equipment that is not in use with pans or absorbent material placed under the machines. Dispose of collected material and absorbents properly. Inspection • Have designated personnel conduct inspections of parking facilities and stonnwater conve:vance systems associated vvith parking facilities on a regular basis. • lnsprct cleaning rquipment/sweepers for leaks on a regular basis. Training • Provide regular training to field <:>mploypes ancl/or contractors regarding cleaning of paved areas and proper operation of equipment. • Train employees and contractors in proper techniques for spill {'OBtainment and dean up. Spill Response nncl Prevention • Keep yom Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date. • Place a stockpile of spill cleanup materials where it will be readily accessible or at a central location. • Clean up thrid spills immediately with absorbent rags or material. • Dispose of spilled material and absorbents properly. Other Considerations Limitations related to svveeping activities at large parking facilities may include high equipment ccsts, the need for sweeper operator training, and the inability of cnrrcnt sweeper tf'chnologv to remove oil and grease. January 2003 California Stormwater BfvtP Handbook Industrial and Commercial www .cabmphandbooks.com 3 of 4 SC-43 Parking/Storage Area Maintenance Requirements Costs Cleaning/sweeping costs ~n be quite large. Construction and maintenance ofstormwater stmetural controls can be quite expensive as well. iHn intenunce • Sweep parking lot regularlv to minimize cleaning with \Vater. • Clean out oilj\vaterjsand separators regularly, especially after heavy storms. • Clean parking facilities regularly to prevent accumulated wastes and pollutants from being discharged into conveyance systems during rainy conditions. Supplemental Information Further Detail of the B.MP Surface Repair Apply conerete, asphalt, and seal mat during dry weather to prevent contamination from contacting stormwater runoff. Where applicable, cover and seal nearby storm drain inlets (\\ith waterproof material or mesh) and manholes before applying seal coat, slurry seal, etc. Leave covers in place until job is complete and all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for proper disposal. Only use only as much water as is necessary for dust control to avoid runoff. References and Resources California s Nonpoinl Source Program Pbn http://www.swrcb.c;.l.gnv/nps/index.html Clark Comrt:y Storm \Vater Pollution Control Manual http://www .co.cla rk.wa. us/pubworks/bmpman.pdf Klng County Storm ·water Pollution Control :rv1anual http://dnr.metrokc.gov(vdr/clss(spcm.htm Pollution Krom Surface Cleaning Folder. 1996. Ba:r A.re"'1 Stormwater Management Agencies Association (BASNL'\.A.). htlp://www.basmaa.org/ Oregon A~;sociation of Clean \Vater Ag~ncies. Dreg on l\'1 unicipal StormwatC'r Toolbox for \'latntenancc Practices . .June 1998. Santa Clara Valley Urban Rnnoff Pollution Prevention Program htt]): /f\V\'>'\v.:'wvnrppp org The Storm \·VatN I\'lanagt>rs RC'sotucC' Center http:/lwww.storrmvatercenter.net/ 4 of 4 California Stormwater BfVlP Handbook Industrial and Commercial www .ca bmphandbooks. com January 2003 Drainage System Maintenance SC-44 Description As f\ ·onsequ ~nCl! of i s .ftmclioo, lh stormwa r conv yAnc system colle ts and transports urban runoff and stonnwater that may contain ce1tain pollutants. The protocols in this fact sheet .ar inl ·nd 'd 1 rcdu ~.: p JJutant"S rc hing r 'Cch·ing wat ·rs through proper conveyance system operation and maintenance. Approach Pollution Prevention Maintain catch basins, stormwater inlets, and other stonnwater conveyance structures on a regular basis to remove pollutants, r du e high pollutant con nt rations during t h • firs flush of stonns, prevent clogging of the downstream conveyance system, ~·tore .a ch basin ·' s 'dim •n lr !)l)ing ca IJ8 ity, and 'mm th system functions properly hydraulically to avoid flooding. S uggested 1'1-otocols Cat h Basins/Inlet Stru. 'I ures • Staff should regularly inspect facilities to ensure compliance with the following: lmm di te r>pairofany dct rioration threat ning s ructural in~ grity. Cl ·~ming b for th • sump is 40% full. C tch basins should be cleaned as frequently as needed to meet this standard. St n iling of ca ch basjn • and it~ets (s c SC34 \\7 nsl Handling and Disposal). JanUc1ry 2003 california Stom1watEr BMP Handbook Indu~tiat &nd C<>rnrl'IOr 1&1 www .Qibmpl'ld ndboo~.<:om Objectives • Cover • Cortain • Edt£i!te • ReduceJMinimize Targeted Constituents Sediment ./ Nlbierts Trash Metals Bacteria OJ and Grease Organics 1 of 6 SC-44 Drainage System Maintenance • Clean catch basins, storm drain inlets, and other eonvevanee struetures before the wet season to remove sediments and debris arcumulated during the summer. • Condud inspections more frequently during the wet season for problem areas where sediment or trash accumulates more often. Clean and repair as needed. • Keep a,~cmatr logs of the number of eatch basins cleaned. • Store wastes colletted from cleaning activities of the drainage system in appropriate containers or temporary storage sites in a manner that prevents discharge to the storm drain. • Dcwatpr the wastes if necessary with outllm·v into the sanitary sew('r if permitted. \Vater should be treated with an approptiatc filtering device prior to discharge to the sanitary' sewer. If discharg(' to the sanitary sewer is not allowed, water should be pumped or vacunmed to a tank and properly disposed. Do not dewater near a storm drain or stream. Storm Dr·ain Conveyance System • Locate reaches of storm drain with deposit problems and develop a flushing schedule that keeps the pipe dear of excessive buildup. • Colleet and pump ilusht>d et11uent to the sanitary sewer for treatment whenever possible. Pump Stations • Clean all storm drain pump stations prior lo the \Vet 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 facilitv. • Condnet routine maintenance at each pump station. • Inspect, dean, and repair as necessary all outlet struc.tures ptior to the \Net season. Open Channel • I\1odify stonu channel characteristics to improve channel hydraulics, increase pollntant removals, and enhance ehannel/ereek aesthetic and habitat value. • c:onduet channel modification/improvement in accordance with existing lavvs. Any person, government a geney, or public utility proposing an activity that will ehangc the natural (emphasis added) state of any river, stn'am, or lake in California, must enter into n Steam or Lake Alteration Agreement with the Department ofFish and Game. The developer-applicant should also eontaet local governments (city, oounty, special districts), other state agencies (SWRCB, RWQCB, Depaitment of forestry', Department of\\'ater Resources), and federal COl'p~ of Engineers and USF\NS. Illicit Connections and Discharges • Look for evidcnee of illegal diseharges or illicit connections dming routine maintenance of conveyance system and drainage strnctnres: 2 of 6 Is there evidence of spills surh as paints, discoloring, etc? California Stormwater BfVlP Handbook Industrial and Commercial www .cabmphandbooks.com January 2003 Drainage System Maintenance SC-44 Are there any odors associated with the drainage system? Rel'ord locations of apparent illegal discharges/illicit ponnections? Track t1ows back to potential dischargers and conduct aboveground inspections. This can be done through visual inspection ofupgradient manholes or alternate techniques inclnding zinc chloride smoke testing, tluorometric dye testing, physical inspection testing, or television camera inspection. Eliminate the discharge once the origin of !low ts established. • .Steneil or demarcate storm drains, \vherc applicable, to prevent illegal disposa 1 of pollutants. Storm drain inlets should have messages sueh as ''Dump No \Vaste Drains to Stream" stenciled ne:xi to them to warn against ignorant or intentional dumping of pollutants into the storm drainage system. • Refer to fad sheet SC-10 Non-Stormwater Diseharges. Illegal Dumping • Inspect and clean up hot spots and other storm drainage areas regularly where illegal dumping and disposal occurs. • Establish a system for lraPking incidents. The system should. be designed to identify the following: Illegal dumping hot spot'> Types and quantities (in some cases) of wastes Pattems in time of occurrence (time of day/night, month, or year) J\Iode of dumping (abandoned con tamers, '·midnight dumping'' ti·om mo\ing 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-Storm water DisPharges. T'Paiuing • Train erews in proper maintenance activities, including record keeping and rlisposal. • Allow only properly trained individuals to handle hazardous materials/wastes. • Hav<:> staff involved in detection and removal ofillieit eonnc,ctions trained in the following: OSHA-required Health and Safety Training (29 CFR 1910.120) pins annuillrt.fresher training (as net'(lt·d). Jan1Jary 2003 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com 3 of 6 SC-44 Drainage System Maintenance OSHA Confina1 Space Entrv training (Cal-OSHA Confined Space, Title 8 and Federal OSJ1A 29 C.FR 1910.146). Procedural training (fie-ld screening, sampling, smoke/dye testing, TV inspection). Spill Response ami Prevention • Imestigate all reports of spills, leaks, andjor illegal dumping promptly. • Clean np all spills anrllcaks nsing "dry'' methods (with absorbe-nt materials andjor rags) or dig np, remove, and properly dispose of contaminated soil. • Refer to fael sheet SC-11 Spill Prevention, Control, and Cleanup. Other Con .. criderations (Limitations wtd Regulations) • Clean-up activities may create a slight disturbanee 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 adivities, including maintenanee, may be snbjed to regulation and permitting. • Storm drain flushing is most effcctl\'C in small diameter pipes (36-inch diameter pipe or less, dcpenfling on water supply and serlimcnt collection capacity). Other considerations associat('d with storm drain flushing may inclnrlc the a\'aila bility of a water source, finding a dovvnstream arf'a to eoUect serlimcnts, liquidjs('dim('nt disposal, and prohibition against disposal of t1uslted effluent to sanitary sewer in some areas. • Regulations may indnde adoption of substantial penalties for tllegal dumping and disposal. • Local nmnicipal codes may include sections prohibiting discharge of soil, debris, refuse, hat.ardous wastes, and other pollutants into the storm drain system. Requirements Costs • :'\n ag;51·essive eatch basin cleaning program could require a significant ('a pita! and O&M budget. • The elimination of illegal dumping is dependent on the availability, convenience, and cost of alternative means of disposal. The primary cost is for staff time. Cost depends on hmv aggre~;s.h'ely a program is implemented. Other cost considerations for an illegal dumping program include: 4 of 6 Purchase and installation of signs. Rental ofvehide(s) to haul illegally-disposed items and material to landfills. Rental of heavy equipment to remove larger items (e.g., ear bodies) from channels. Pnrchase of landfill space to dispose of illega Uy-dnrnped items and material. California Stonnwater BfVIP Handbook Industrial and Commercial www,cabmphandbooks com January 2003 Drainage System Maintenance SC-44 • Methods nsed for illicit connection detection (smoke testing, dye testing, visual inspection, and flow monit01ing) can be costly and time-consuming. Site-spedfic factors, such as the ],evel of impervious area, the density and ages of buildings, and type of land use will dc>terminc> the level of investigation neccssa ry. i'lclc.,riutenouce • Two-person teams may be requirc>cllo dean C'atch basins with YaC'tor trucks. • Teams of at least two peopl<: plus administrath·e personnel are required to identii)' illicit discharges, depending on the comple~ity of the storm sewer system. • Arrang0ments must be made> for proper disposal of co llf'C'ted wash's. • Teehnical staff are required to detect and investigate illegal dumping violations. Supplemental Information Further Detail of the BlHP St(lrm Drain Flushing Flushing is a common maintenance aetivity used to improve pipe hydraulil'S and to remove poHutants in slorm drainage systems. Flushing may be designed to h:'-·draulically com·e)' accumulated material to strategic locations, such as an open channel, anotht>r point where flushing will be initiated, or the sanitary sev.-er and the treatment facilities, thus preventing re~nspension and overflow of a po1tion of the solids during storm events. Flushing prevents "plug flow" discharges of concentrated pollutant loadings and sediments. Deposits ean hinder the designed conveyance capacity of the storm drain S)''Stem and potentially cause backwater conditions in severe cases of dogging. Storm drain flushing usually takes place along segments of pipe with grades that are too tlat to maintain adequate velocit.Y to k('ep particles in suspension. An upstream manhol(' is S(']ected to place an inflatable dcviC'e that tempotarily plug<; the pipe. ~urthc>r upstream, water is pumped into the line to create a flushing wave. \Vhcn tht' upstream reach of pipe is sufficiently full to cause a flnshing wave, the inflaterl d0viC'c is rapidl~' det1ated with the assistanC'e of a Yacuum rmmp, thereby r0leasing th0 bad.;ed up water and r0sulting in the cleaning of the storm drain se;~m0nt. To further reduce impacts of storm water pollution, a second inflatable device placed well dcwnstr·eam may be useclto recollect the water after the force of the flushing wave has dissipated. A pump may tht>n be used to transfer the water and accumulated material to Lht> sanitary sewer for treatment. In some cases, an interceptor structnre may be more prctctical or required to recollect the flushed waters. It has been found that cleansing efficiency of peliodic flush wa\·es is dependent upon flush volume, flush discharge rate, sewN slope, sewer length, sewer tlow rate, sewer diam0ter, anfl population density. As a rule of thumb, the length oflin0 to be tllL'lhed should not f'xcced 700 feet. At this maximum rc('ommcnded length, the percmt removal eftkienc~· ranges hetwwn 6s- 7~1% for organics and 55-65% for dr)' weathet grit/inorganic material. The percmt removal efficiency dtops rapidly beyond that. \\'at0r is ('ommonly supplied by a water trnck, but fire hydrants can also supply ,water. To makr the best use of water, it is r0commended thilt rt-claimf'd water hf' usNl or that fire hydrant linf' tlushing coinci(](• ·with storm spwer flushing . .. , ____________________________________________________________________________ _ January 2003 California Stormwater B!•lP Handbook 5 of 6 Industrial and Commercial www.cabmphandbooks.com SC-44 Drainage System Maintenance References and Resources California ':s Nonpoint Source Program Plan http:/ /v.rww. swrcb.ca.gov /nps/index. html Clark County Storm Water Pollution Control !'vlannal http: I {w,\nll\' .co. clark. wa. us/pubworks/bmpman.pdf Ferguson, B.K. 1991. Urban Stream Reclamation, p. ;124-a22, .Jonmal of Soil and Water Conservation. King County Storm \:Vater Pollution Control JVIanual http:l/dnr.metrokc.gov/wlr/clss/spcm.htm Oregon Association of Clean Water Agencies. Oregon ?vinnieipal Slormwater Toolbox for \lainlenanee Practices. June 1998. Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.scvuropp.org The Storm Water :rv1anagers Resource Center http:(/wW'\V.stormv·mtercentcr.nct United. Stales Environmental Prolel·tion Agency (USEPA). 2002. Pollution Prevention/Good Housekeeping for l\Iunicipal Operations Storm Drain System Cleaning. On line: http:!/w'I'<'W.eJ2a.gov/nJ2cles/mennotbmps/poll 16.htm 6 of 6 California Stormwater BfV1P Handbook Industrial and Commercial I"-'WW .ca bm phand books. com J~nuary 2003 ''3 c .. Follow the S and be a Think Blue Partner Storm water pollution is a problem that affects all of us. When it rains, water flows over our streets and yards, and carries pollutants into storm drains. Dai!Y activities such as lawn over-irrigation or hosing down driveways also create excess water that flows into the storm drains. The storm drain system is not connected to the sewer treatment system. So, pollution in the streets and gutters flows untreated direct!Y into our creeks, lakes, rivers and the ocean . The Storm Water Department in the Ciry of San Diego is responsible for maintaining more than 39,000 storm drain structures, over 900 miles of storm drain pipes and channels, and seeks to educate residents about pollution prevention through the Think Blue program. As a Ciry resident, you can make a difference. By becoming a Think Blue Partner both on the job and in your commun iry, you can help reduce pollution in our waterways . Teach your children and grandchildren about pollution prevention, and share your knowledge. Be aware of illegal discharges and report them. Whether at home or at work, by adopting some simple pollution prevention habits called "Best Management Practices" (BMP's), you can stop pollutants from entering our storm drain system . • Use dry clean-up methods for spills • Rake, sweep-up, and place all debris and outdoor cleaning. Vacuum, (dust, litter, clippings, sediment, etc.) sweep, and use rags or dry from your yard or near your properry absorbents instead of hosing down. into a trash can. • Proper!Y label, store and dispose • Use a mop where water is needed. of hazardous wastes. Utilize "The 3 c s" CONTAIN: Contain your work area by isolating debris and pollutants . Containment could include blocking and/or filtering water or debris to prevent any potential flow or discharge from leaving the area and entering the storm drain (ie. by using sandbags, gravel bags, berms, etc.). CONTROL: Control mechanisms are processes and tools that allow you to manage your activiry (work) area. A control mechanism can be as simple as sectioning off your activiry into smaller units. Control also includes activities such as sweeping up debris, using a mop instead of a hose, or using a trigger nozzle instead of letting water run from a hose. CAPTURE: Capture all potential debris or run off. Once you have completed a job, be sure to clean up the area and proper~ dispose of pollutants and debris (sweep up, vacuum, use a wet-vacuum, etc.). Hickin~ Butts in Cal'lsbad! Only Rain in the Storm Drain H-ol~ 011\-to your tsutts tsefore Thetj c;et A H-ol~ Oil\-TV!e / 5V'vVL-VOV'vVVleV'vt 'Billions of cigarette butts are discarded each year on our streets and sidewalKS. When it rains, Storm water carries them to our water ways, beaches and ocean. As a result, theY have become the moSt common type of litter found on our coastline and in the storm drain system. Cigarette butts are not biodegradable; in fact, it can taKe over 15 years to breaK them down, all the While releasing the toxic chemicals contained in the filters. Please hold onto your cigarette butts until theY can be disposed Of properlY. Become a part of the r---------POIIUtion SOlUtion r City of Carlsbad L--------======== Storm Water Protection Program HOTline (760) 602·2799 www.carlsbadconserves.org Storm Water Compliance Inspections The City of Carlsbad has developed an inventory of all existing commercial and industrial businesses and has prioritized them according to the type of business, proximity to the nearest water body and potential threat to water quality. Based on this prioritization, the City will be conducting storm water compliance inspections of all industrial and most commercial facilities within the City. These site inspections will include a meeting with business representatives, a walk-through ofthe facility, evaluation of current storm water best management practices and recommendations for additional measures that may be required to comply with the new permit and ordinance. In addition to the industrial and commercial inspections, the City is also performing construction site inspections, conducting a comprehensive strom drain monitoring program to detect pollutants, enforcing urban runoff requirements for new developments and conducting frequent cleaning of the storm drain system. Sanitary Sewer vs. Storm Drain What's the difference? The water that drains down a sink or toilet flows to the sanitary sewer and is treated at a wastewater treatment plant. The storm drain, on the other hand, is designed to carry rainwater away from streets, parking lots and driveways to prevent flooding. This water does not receive any treatment and flows directly into our creeks, lagoons and ocean. City of Carlsbad 1635 Faraday Avenue Carlsbad CA 92008 Storm Water HOTline: 760-602-2799 stormwater@ci.carlsbad.ca.us 1\ l~ Printed on recycled paper Best Management Practices For BUSINESSES Commercial and Industrial City of Carlsbad Storm Water Protection Program Storm Water HOTline 760-602-2799 Pollution Prevention Is Up to US! Did you know that storm drains are NOT connected to sanitary sewer systems or treatment plants? The primary purpose of storm drains is to carry rainwater away from developed areas to prevent flooding. As rainfall flows over the ground, it picks up a variety of pollutants which flow directly to our creeks, lagoons and ocean. Pollutants of concern include: • Sediments • Fertilizers • Metals • Detergents • Pesticides • Organic Compounds • Trash and Debris • Oil and Grease • Bacteria and Viruses Pollution Prevention Is Up to US! Best Management Practices (BMPs) are procedures and practices you can implement to prevent pollutants and other hazardous materials from entering our storm drains. Once potential and existing sources of pollution have been identified, the next step is to select proper BMPs to eliminate or reduce storm water pollution. Program staff is available to provide information and assistance in developing BMPs for your business. Each of us can do our part to keep storm water clean. Using BMPs adds up to a pollution solution! Only Rain in the Storm Drain! Good Housekeeping • Instead of using a hose or pressure washing system, try a dry clean up method! Use mops, brooms or wire brushes to clean dumpsters, sidewalks, buildings, equipment, pavement, driveways and other impervious surfaces. Wash water should be disposed to the sanitary sewer, NEVER to the storm drain. • Minimize the use of cleaning solutions and agents. • Keep site free of litter and debris. Place trash cans and recycling receptacles around the site to minimize litter. Preventive Maintenance • Keep equipment and vehicles in good working condition. Inspect frequently for leaks and repair as needed. • Gutters, storm drains, catch basins and other storm drainage features should be regularly inspected and cleaned so that pollutants do not accumulate. • Label storm drains to remind employees that discharge to these drains flows directly to our waterways. Materials Storage and Handling • When possible, store materials indoors or under covered areas not exposed to rain. If materials can not be stored under cover, place materials on pallets and cover with a tarp to avoid contact with storm water run-on and run-off. • Store liquids, hazardous waste and other chemicals in a designated area with secondary containment. Keep outdoor storage areas in good condition. Waste Management • Sweep up around dumpsters and other areas frequently to prevent trash from accumulating. • Place all trash inside dumpsters or containers until it can be hauled away. • Dumpsters should always be kept closed to prevent rainwater from entering. Never place liquid waste, leaky garbage bags and hazardous waste in a dumpster or trash bin. • Recycle cans, bottles, newspaper, office paper and cardboard. Calll-8()()-(LEANUP for more information about recycling programs in your area. Vehicle Washing and Cleaning • Wash company vehicles at a commercial car wash, whenever possible. If vehicles are washed onsite, wash water must be contained and disposed of to the sanitary sewer. Spill Response • Use brooms and absorbents such as cat litter or sawdust to clean up small spills. Report significant spills to the Storm Water Protection Program and/or the appropriate spill response agencies immediately. • Write and keep current a spill response plan. Ensure that employees are trained on the elements of the plan. • Keep rags, damp mops and absorbents readily accessible. Dispose of waste properly. Employee Training • Discuss and distribute information on storm water pollution prevention during employee training sessions and at employee meetings. • Post good housekeeping tips and reminders on employee bulletin boards. • Inform subcontractors about the new storm water requirements and their responsibilities. For more information or assistance, please call 760-602-2799. CITY OF SAN DIEGO STORM WATER POLLUTION PROGRAM INTEGRATED PEST MANAGEMENT Smart Tips for Hiring a Pest Control Service If you are thinking of hiring a pest control service there are some important things to consider before you take that step. Here is a checklist to help you hire a service that will adequately research your pest problem and safely apply the appropriate material to control it. Should I hire a Pest Control Service? Determine if the pest problem warrants hiring a pest control professional: • Is the damage or nuisance something you can live with? • Can you safely and effectively treat the problem yourself? • Can you make changes that will control the pest problem over the long term and eliminate the need for any chemical control? Get Recommendations and Facts Obtain recommendations from neighbors, friends or family. Call at least three companies and consider the following: • What types of services does the company offer? For example, do they provide only monthly spray contracts or do they offer an Integrated Pest Management (I PM) approach? • Are least-toxic pesticides or baits used when appropriate? • Is the company operating with the required licenses, certificates and insurance? Pest control companies and individuals making household treatments must operate with a license issued by the Structural Pest Control Board. Verify the status of a pest control company's license online at http://www.pestboard.ca.gov/license.htm. • Individuals operating in landscape maintenance or gardening businesses and performing incidental pest control must possess a Qualified Applicator Certificate or License (QAC or QAL) issued by the California Department of Pesticide Regulation. Verify the status of an individual or business QAC or QAL online at http://www.cdpr.ca.gov/docs/license/currlic.htm. • Most reputable pest control companies carry both general liability insurance and worker's compensation insurance. Ask for an Inspection • Ask the company to inspect the site. The company may charge a fee to do this inspection, but for that fee they should provide you with a diagnosis of the problem or an identification of the pest. They should show you where the pest is causing the problem and discuss how they plan to control it. The company should also provide you with details regarding the course of treatment(s), the frequency of inspections and treatment, and an estimate of the cost of implementing their treatment plan. • Consider long-term solutions to the problem. A company that practices IPM will suggest modification of the habitat or use of baits and monitoring, rather than just a guarantee to spray when and if the pest reappears. • Ask which pesticides will be used, the active ingredients they contain, and their effects on people, pets and the environment. Determine if there are specific label instructions for precautions after application. You may request a copy of the Material Safety Data Sheet from the pest control company for each pesticide used. • Ask how the pesticide will be applied and where. Chemicals sprayed around the home perimeter may be washed away by irrigation or rain, especially if concrete walkways or other impervious materials surround the home. Avoid companies that do this type of spraying. • Is the company forthcoming with information on the identified pest problem, the reasons behind a chosen treatment, and the application techniques? Monitor the Work Following selection of a pest control company, continue a dialogue with the company to insure that you are getting the service stated in your contract • Verify that pest populations are being monitored by the company as agreed in the contract • Communicate to the company the levels of pests that are tolerable as well as intolerable. For example, you may tolerate ants in the landscape, but not inside the home. • Inform the company of any appearance or increase in pest populations that you notice between visits. Keep These Tips in Mind Important considerations to keep in mind when applying pesticides in your garden, landscape or home: • Be aware of weather patterns and do not apply pesticides just prior to rainfall or during windy conditions. • Avoid the use of pesticides such as diazinon and chlorpyrifos that have been detected in streams, rivers and lakes. These specific products are no longer available for purchase, and can be disposed of at a household hazardous waste collection facility. • Avoid the use of "broad-spectrum" insecticides. These products indiscriminately kill many types of insects, including beneficial and desirable species, and damage the balance between pest populations and their natural enemies. Frequent use of broad-spectrum pesticides can also result in the development of resistant strains of pests or secondary outbreaks of other pests. • Under no circumstances should pest control equipment be cleaned in a location where rinse water could flow into gutters, storm drains or open waterways. • Be aware that some pesticides are more easily carried in surface runoff than others and therefore have a greater potential to move off-site during irrigation or rain events. The leaching and runoff risks of specific pesticides can be obtained from UC Riverside's Pesticide Wise web site at http://www.pw.ucr.edu. Just enter the pesticide trade name or active ingredient and the conditions under which the material will be applied, such as type of soil texture, slope, irrigation rate and vegetative cover. Information From: Cheryl Wilen, San Diego area IPM Advisor; Darren Hewer; Mary Louise Flint; Pamela M. Geisel, University of California Cooperative Extension Farm Advisor, Environmental Horticulture, Fresno County; Carolyn L. Unruh, University of California Cooperative Extension Fresno County staff writer. For More Information, Please Contact: Think Blue, City of San Diego Storm Water Department 9370 Chesapeake Drive, Ste 100, MS1900 San Diego, CA 92123 Hotline: (619) 235-1000 www.thinkblue.org California State Water Resources Control Board Regional Water Quality Control Board, San Diego Region (9) 917 4 Skypark Court, Suite 100 San Diego, CA 92123 Phone: (858) 467-2952 www.waterboards.ca.gov;sandiego U.S. Environmental Protection Agency Office of Wetlands, Oceans, and Watersheds (4503T) 1200 Pennsylvania Avenue, N.W. Washington, D.C. 20460 Phone: 202-566-1300 think BlUE ~ This infonnation is available in alternatiVe formats upon request. Storm Water Pollution Prevention A Guide to Best Management Practices THE CITY Of' SAN DIEGO R ~dent Landscaping ........ Residential: Landscapi.ng~~=======::::!!!!~=:::::::.--.-~ ...... ..........._ Green Waste REQUIRED ACTIVITY: Properly store and dispose of green waste. DESCRIPTION AND EXAMPLES: Sweep up and dispose of green matter from landscaping maintenance to prevent it from entering the storm drain system. Use your green bin, and take it to the green waste section of landfill or use appropriately on site. REASON ACTIVITY IS REQUIRED: Proper disposal and removal of green waste prevents yard waste from potentially entering the storm drain system and creating excess bacteria. Pesticide Use REQUIRED ACTIVITY: Properly manage pesticide andj or fertilizer use in your yard. DESCRIPTION AND EXAMPLES: Apply pesticides and fertilizers in strict correspondence with manufacturer's guidance. Safely store all chemicals in closed or covered areas. Dispose of all waste products at a household hazardous collection center. When feasible, use integrated pest management principles (plant selection, biological controls, and habitat manipulation) to reduce use of chemicals. REASON ACTIVITY IS REQUIRED: Proper pesticide use reduces chemical pollutants in yards, lawns and other areas that could generate water runoff. REQUIRED ACTIVITY: Protect your landscaped areas from erosion by maintaining a vegetative cover. DESCRIPTION AND EXAMPLES: Plant and maintain a healthy ground cover on exposed soils to reduce water runoff and erosion that may contain or transport pollutants off your property and into the storm drain system. Other examples could include using mulch and other ground cover. REASON ACTIVITY IS REQUIRED: Providing ground cover protects soil, can reduce erosion, and prevents associated pollutants (such as dirt) from entering and clogging the storm drain system. By adopting these practices, you can help keep our waterways clean and avoid fines. Hotline: (619) 235-1000 www.thinkblue.org Under the City of San Diego's Municipal Code §43.0301, Storm Water Management and Discharge Control ordinance, it is illegal to discharge pollutants into the storm water conveyance system. Fines can be up to $1000 Excerpt from: Jurisdictional Urban Runoff Management Plan (JURMP), Appendix XII. ~Minimum BMPs for Residential Areas and Activities~ Please see http:/ j www.sandiego.govj thinkb/uejcontacvurmp.shtml tor more information. Be a Clean \Nater Leader Storm water pollution is a problem that affects all of us. With a growing population of more than 1.2 million residents and approximately 237 square miles of urbanized development, keep- ing our waters clean from pollutants has become increasingly difficult. With more than 39,000 storm drain structures, and over 900 miles of storm drain pipes and channels to clean and maintain, we need your help. When it rains, water flows over our streets and yards and carries the pollutants it picks up into the storm drains. The problem is that storm drains are not connected to the wastewater treatment plant. So, what's in the streets flows directly into our creeks, lakes, rivers and the ocean, untreated. Last year, too many of our beaches and bays were closed or posted as unsafe for swimming. As our Mayor has said, "this is more than an inconve- nience; it is a civic embarrassment." But, as a City resident, you can make a difference. By becoming a Clean Water Leader, both on the job and in your community, you can help make our beaches and bays free of pollution. When you're at home, share your knowledge with neighbors and family. As you drive to work, be aware of any illegal discharges. And, if you do see an illegal discharge, report it. In the City of San Diego you can call (619) 235- 1000. Or, if you see an illegal discharge outside of the City of San Diego, you can call the regional hotline at 1-888-THINK-Blue. By working together we can make a difference. Whether at home or at work, by adopting some simple Best Management Practices (BMPs), you can stop pollutants from being generated and enter- ing our storm drain system. • Use dry clean-up methods for spills and outdoor cleaning. Vacuum, sweep, and use rags or dry absorbants. • Properly label, store and dispose of hazardous wastes. • Rake, sweep-up, and place all debris (dust, litter, sediment, etc.) from your yard or near your property into a trash can. • Use a mop where water is needed. As you perform your daily activities be proac- tive. Assess the activity from a stormwater pol- lution point-of-view and ask yourself; "does this activity, directly or indirectly, generate pollu- tion?" And, "how can I get the job done and pre- vent debris from entering into the storm drain collection system?" Here are some general guidelines you can use at home or on the job: The 3 Cs Control: Locate Contain: Isolate the nearest storm drain(s) and take measures to ensure nothing will enter or discharge into them. This may require you to sweep-up and place debris & sedi- ment in a trash can prior to beginning the work activity. your work area, to prevent any potential flow or discharge from leaving the area. Capture: Once you have completed ajob, be sure to clean-up the area. If there is sediment, sweep it up. If there are liquids, ab- sorb it or vacuum it up with a wet-vac. Remember, what you leave behind can potentially be discharged into the storm drain. environments that provide food, water, and shelter. Roaches hide in cracks, crawl spaces, and other dark places during the day and come out at night to feed. Pesticide sprays alone will not control roaches and are not usually required. Baits provide better control. You must integrate several strategies to make your home a less roach-friendly environment. Thoroughness is essential for effective control. Identify your cockroach species first: I ,... Effective management options vary according to species. ,... Cockroach traps provide an easy way to catch roaches for identification. ,... Control practices for outdoor invaders (Ameri- can, oriental roaches) and indoor residents (brownbanded and German roaches) differ. ,... For help with identification go to www.ipm.ucdavis.edu. Remove food and water sources: Even tiny crumbs or liquids in cracks provide good food sources. ,... Store food in sealed containers. ,... Keep trash in containers with tight lids. ,... Eli inate plumbing leaks. V CJJ Um cracks and crevices and clean floors and tinters daily. r clean up other areas where es or their egg cases hiding. Use traps to identify and track cockroach populations: ~ Cockroach traps are available in hardware stores. ~ Place traps on the floor around edges of walls, in cupboards and other places where you think roaches are foraging. Place bait stations at locations where you trap roaches. ~ Check traps daily. ~ Sticky traps with pheromones may provide some control of German cockroaches. Using chemicals to control cockroaches: I ~ Avoid use of foggers, bombs, or aerosol sprays-they just disperse populations. ~ Boric acid powder blown into cracks, crevices, hollow walls, under refrigerators, or other undisturbed hiding places is very effective (allow 7 days or more for an effect to be seen). ~ Bait stations containing boric acid, abamectin, fipronif, or hydramethylnon placed near hiding places can be effective if other food sources are removed (allow 7 days or more for an effect to be seen). Replace stations as needed as long as roaches are being caught. ~ Insecticide sprays alone do not give long-term control. They are not necessary if other methods such as baits and boric acid powder are combined along with cleanup and removal of hiding places. ~ Contact a professional pest control operator for very serious infestations, but be sure they use an integrated proqram as described above. German cockroach adult Use NON-CHEMICAL methods & LEAST TOXIC pesticides. WHY? Runoff from around your home and garden carries water containing pesticides that pollute our streams, rivers, lakes and oceans. Learn more about san Diego regional water quality at \l\ll.l\l'llv. ThinkB!ueSD.org & \l\ll.l\l'llv.ProjectC!eanWater.org. For more pest information visit the University of California !PM website at: www.ipm.ucdavis.edu or the UCCE Master Gardeners at: (858) 694-2860, Mon -Fri, 9 am to 3 pm ·fJ UC~IPM \...._J University of Ca lifornia Cooperative Extension It's the water that connects us! ~ .. :,. fl .~ ... around your home. ""' Store supplies such as paints, solvents and cleaners properly to avoid spilling . ... When using water based paints, rinse paint brushes in the sink. Never clean brushes or pour paint in the gutter or storm drain. ... Pick up trash and litter around your yard and home. ... Dispose of drywall, concrete and mortar from home improvement projects in the trash. Sweep up all project debris. PYeventin!J Pollution ... from your vehicle. ... Regularly check your vehicle for fluid leaks and keep it serviced. ... When changing fluids in your car, drain into a clean container and dispose at a used oil collection site . ... Quickly contain fluid spills with rags or kitty litter, and dispose of properly . ... If you wash your car, use a trigger nozzle on your hose and wash your car on a landscaped surface -it won't kill your grass. ,.. Carry bags to pick up after your pet and dispose in the trash. 1111forlal1t R.esouYces awl Contacts To report Storm Water Pollution in San Diego, please call the Think Blue Hotline (619) 235-1000 City of San Diego Storm Water Department (858) 541 -4360 City of San Diego Environmental Services Department (858) 694-7000 If you are outside of the City of San Diego call: I-BOO-CLEANUP or go to www.earth911.org to find your local hazardous waste program. Under the City of Son Diego's Municipal Code §43.030 I, Storm Water Management and Discharge Control ordinance, it is illegal to discharge pollutants into the storm water conveyance system. www. ThinkBiue.org @ Printed on recycled paper. TP·171 (12/08) 1500 This information wiU be made available in altemativl! formats upon request. ... or when water flows out of yards, it flows dtredly into storm drains. Many people think that when water flows into a storm drain it is treated, but the storm drain system and sewer system are not connected. Everything that enters storm drains flows untreated directly into our creeks, rivers, bays, beaches and ultimately the ocean. Storm water can contain harmful pollutants, including pesticides, pet waste, trash, and automobile fluids. You and your family play an important role in pollution prevention. If everyone makes a few simple changes, we can help protect our San Diego lifestyle and environment. The Federal Clean Water Act prohibits disposal of waste and pollutants into creeks, rivers, bays, lakes and the ocean due to the harmful effects pollutants have on recreational waterways and wildlife. Some of San Diego's most popular beaches have been temporarily closed because of storm water pollution. By preventing pollution from occurring in our neighborhoods and at our businesses, we can protect our environment and our families' health and safety. ''th£nk Blue San D£e o" Think Blue, the City's pollution prevention education program in the Storm Water Department, is responsible for educating residents, visitors and industry on ways to prevent pollution and protect our waterways in San Diego. ... in your yanl. Before beginning an outdoor project, locate the nearest storm drain and take action to protect it from debris. This may require you to sweep the gutter between your project and the storm drain,~ starting work. "' Use fertilizers and pesticides sparingly. Read labels carefully and only apply after it rains, not before ,.. Use mulch instead of herbicides to prevent weeds from growing and to help absorb water. "" Select drought resistant native plants that conserve water and prevent runoff. ,.. Adjust sprinklers and reduce water times to prevent over-irrigation runoff. "" Keep your gutters free of leaves and grass clippings. Sweep up instead of hosing down your driveway. A Chal1je for the hetter be_jins with you "Think Blue San Die3o'~ For More Information, Please Contact: Think Blue, City of San Diego Storm Water Department 9370 Chesapeake Drive, Ste 100, MS1900 San Diego, CA 92123 Hotline: (619) 235-1000 www.thinkblue.org California State Water Resources Control Board Regional Water Quality Control Board, San Diego Region (9) 917 4 Skypark Court, Suite 100 San Diego, CA 92123 Phone: (858) 467-2952 www.waterboards.ca.gov;sandiego u_s_ Environmental Protection Agency Office of Wetlands, Oceans, and Watersheds (4503T) 1200 Pennsylvania Avenue, N.W. Washington, D.C. 20460 Phone: 202-566-1300 thinkBWE -s:;:;c;;;;;- This information is ava1lable in alternative fonnats upon request. Storm Water Pollution Prevention A Guide to Best Management Practices THI[CITl'OF SAN DIEGO RNO,~m:Bs Trash Storage and Disposal sidential: Trash Trash Storage REQUIRED ACTIVITY: Protect your trash storage areas to prevent overflowing or loose trash coming In contact with storm water systems. DESCRIPTION AND EXAMPLES: Ensure your trash area is either: (1) paved with an impervious surface, designed not to allow run-off from adjoining areas, and screened to prevent off- site transport of trash; (2) utilize attached lids that exclude rain; and/or (3) cover area to minimize direct precipitation. Locate local trash areas down- stream of drain inlets around your home. Keep this area free of trash. REASON ACTIVITY IS REQUIRED: Trash Disposal Area REQUIRED ACTIVITY: Keep your local trash disposal areas clean. DESCRIPTION AND EXAMPLES: Keep your trash in dumpsters and other receptacles to prevent trash from blowing offsite. Sweep trash storage areas frequently and check dumpsters for leaks. Never place liquid waste in dumpsters as it will create runoff. If this occurs, use dry cleanup methods in trash disposal areas. REASON ACTIVITY IS REQUIRED: A clean trash disposal area will prevent contact of rain water with pollutants, causing water run-off into the storm drain system. By properly storing trash, you can reduce the chances of rain water from distributing pollutants, which will reduce contaminated water and debris from entering the storm drain system. To report a dumpster encroaching onto a public right-of-way or overflowing call (858) 694-7000. think BLUE S AN DIEGO To report a dumpster Improperly stored on private property call (619)236-5500. Hazardous Waste Disposal: (858) 338-2222 By adopting these practices, you can help keep our waterways clean and avoid fines. Hotline: (619) 235-1000 www.thinkblue.org Under the City of san Diego's Municipal Code §43.0301, Storm Water Management and Discharge Control ordinance, it is illegal to discharge pollutants into the stonn water conveyance system. Fines can be up to $1CX>O Excerpt from: Jurisdictional Urban Runoff Management Plan (JURMP), Appendix XII. ·Minimum BMPs for Residential Areas and Activities~ Please see http:;'jwww.sandiego.govj thinkblue/contacvurmp.shtml for more information. For More Information, Please Contact: Think Blue, City of San Diego Storm Water Department 9370 Chesapeake Drive, Ste 100, MS1900 San Diego, CA 92123 Hotline: (619) 235·1000 www.thinkblue.org California State Water Resources Control Board Regional Water Quality Control Board, San Diego Region (9) 917 4 Skypark Court, Suite 100 San Diego, CA 92123 Phone: (858) 467-2952 www.waterboards.ca.gov;sandiego U.S. Environmental Protection Agency Office of Wetlands, Oceans, and Watersheds (4503T) 1200 Pennsylvania Avenue, N.W. Washington, D.C. 20460 Phone: 202-566-1300 This information is availabfe in alternative formats upon request. Storm Water Pollution Prevention A Guide to Best Management Practices THI: CITY OF' SAN DIEGO Wash Water and Irrigation Runoff Wash Water REQUIRED ACTIVITY: Wash your vehicles In designated areas and use practices to minimize wash water from entering the storm drain system. DESCRIPTION AND EXAMPLES: Minimize water runoff when washing your vehicles (it contains pollutants such as brake dust and oil). Where feasible, drain the wash water to, or wash on, a permeable area such as a lawn or landscaping. This will minimize pollutants from entering the storm drain system. Use a control nozzle or similar method to minimize unnecessary amounts of water runoff. Other examples of helpful activities include using a car wash that recycles water, washing vehicles on your lawn (it won't kill your grass), or draining the water into your landscaping. REASON ACTIVITY IS REQUIRED: Washing on pervious surfaces prevents water runoff and pollutants from potentially entering the storm drain system by keeping them onsite and allowing them to soak into the ground. Over Irrigation REQUIRED ACTIVITY: Eliminate over Irrigation runoff from entering the storm drain system. DESCRIPTION AND EXAMPLES: Eliminate over irrigation · runoff to the storm drain system by using proper landscape maintenance and watering practices. Some irrigation runoff may occur due to broken sprinklers, irrigation system failures, etc, so properly maintain irrigation systems by fixing broken sprinklers or other system components, control over-spray, and abide by local watering restrictions. Examples of could include: using a moisture meter, adjusting sprinkler times, or using ground cover. REASON ACTIVITY IS REQUIRED: Proper landscape maintenance reduces the potential for water from over- irrigation to enter storm drain system. If leaking or clogged storm drains are around your property call (619) 236-5500. think BLUE SA.N O utGO By adopting these practices, you can help keep our waterways clean and avoid fines. Hotline: (619) 235-1000 www.thinkblue.org Under the City of San Diego's Municipal Code §43.0301, Storm Wcfter Management and Discharge Control ordinance, it is illegal to discharge pollutants into the storm water conveyance system. Fines can be up to $1000. Excerpt from: Jurisdictional Urban Runoff Management Plan (JURMP), Appendix XII. "Minimum BMPs for Residential Areas and Activities· Please see http:/ fwww.sandiego.gov;thinkblue;contacvurmp.shtml for more information. AppendixS Treatment Control BMP Sizing APPENDIX 5 COSTCO CARLSBAD GAS STATION EXPANSION-BMP SIZING CALCULATIONS IMPERVIOUS AREA PERVIOUS AREA IMPERVIOUS RATIO EIGHTED CFACTOR (I SF SF HBF -HIGHER RATE BI<D-FILTER (MODULAR WETLAND) I) WEIGHTED C FACTO (DETERMINED PER COUNTY OF SAN DIEGO HYDROLOGY MANUAL P. 3-5, 3-6 FOR SOIL TYPES A JULY2015 STORM WATER MANAGEMENT PLAN 7) Q (WQ) -REQUIRED WATER QUALITY TREATMENT FLOWRATE CALCULATED PER CITY OF CARLSBAD STORMWATER STANDARDS P. 29 (Q~ C'" WHERE i 0.2 IN/HR 3) Q (CAPACITY) PRO/IDEO WATER QUALITY TREATMENT FLOWRATE PROVIDED BY MANUFACTURER, INCLUDED IN BMP DETAILS Appendix6 T rea1ment Control BMP Fad Sheets SITE SPECIFI: DATA PRrJ./[CT NUUBER PRQ1£CT NAME PRO.../ECT LOCATION STRuC-:-URE 1D TRF"ATMENT HGI ,AVAIIARI F (fT) 2902 COSTCO CARLSBAD CARLSBAD, CA PEAK BYPASS REQUIRED {CFS) -IF 4PPUCABLE PIP[ fAT A /E. 1/1/LET PIP£ 1 67 35 /!./LET PIPE 2 OUTLET PJP£ 66.15 PRETREATMENT RIU EUVATION 70.28 SURFACE WAD PARKWAY FRAV£ & COVER 35• X 36~ WfTIANDMFDIA VOWMf {CY) --~ ~- WETIAN[)MEDIA D[LJVERY M£7HOD ORIFICE SIZE (DJA. INCHES) PVC PVC [J,'OF/LTRATION 10./8 0 )EN PlANTER N/A ~--------·-- MAXIMUJJ PICK WEIGH.' (LBS} NOTES INSTALLATION NOTES e· DISCifARG[ 70/8 PARKWAY 2 37 !BD WETLAND MEDIA am L_~------4 VEGETATION""""" PLANT £STABLISHJJ£NT MEDIA C/L PLAN VIEW ELEVA T/ON VIEW SJ7£ CURBING SUPPLIED AND iNSTA1.1£D BY CONTRACTOR CURB ,......_ INL£T PIP£ SEE NOTES OIJll.£T PIP£ SEE NOTES !,\ 0 D U I A f\ LEFT END VIEW BIOFILTRATION RIGi-IT END VIEW PREP!..; TMFNT/DISCHAR6E Tf!:.,-VFNT FLOW {CFS) ~--·_ WL: MEDiA WADING RATE {GPM/SF} O.C9'5 28 lDD IC MWS-L-4-8-C 5TORMWA TER 8/0F/L TRA T/ON SYSTEM STANDARD DETAIL Maintenance Guidelines for Modular Wetland System-Linear Maintenance Summary l_ MODUL A R WETLANDS o Remove Trash from Screening Device -average maintenance interval is 6 to 12 months. • ( 5 minute average service time). o Remove Sediment from Separation Chamber-average maintenance interval is 12 to 24 months. • ( 10 minute average service time). o Replace Cartridge Filter Media -average maintenance interval 12 to 24 months. • ( 10-15 minute per cartridge average service time). o Replace Drain Down Filter Media-average maintenance interval is 12 to 24 months. • (5 minute average service time). o Trim Vegetation -average maintenance interval is 6 to 12 months. • (Service time varies). System Diagram Inflow Pipe (optional) Access to screening device, separation chamber and cartridge filter Biofiltration Chamber www.modularwetlands.com Access to drain down filter MODULAR WETLANDS Maintenance Procedures Screening Device 1. Remove grate or manhole cover to gain access to the screening device in the Pre- Treatment Chamber. Vault type units do not have screening device. Maintenance can be performed without entry. 2. Remove all pollutants collected by the screening device. Removal can be done manually or with the use of a vacuum truck. The hose of the vacuum truck will not damage the screening device. 3. Screening device can easily be removed from the Pre-Treatment Chamber to gain access to separation chamber and media filters below. Replace grate or manhole cover when completed . Separation Chamber 1. Perform maintenance procedures of screening device listed above before maintaining the separation chamber. 2. With a pressure washer spray down pollutants accumulated on walls and cartridge filters. 3. Vacuum out Separation Chamber and remove all accumulated pollutants. Replace screening device, grate or manhole cover when completed. Cartridge Filters 1. Perform maintenance procedures on screening device and separation chamber before maintaining cartridge filters. 2. Enter separation chamber. 3. Unscrew the two bolts holding the lid on each cartridge filter and remove lid. 4. Remove each of 4 to 8 media cages holding the media in place. 5. Spray down the cartridge filter to remove any accumulated pollutants. 6. Vacuum out old media and accumulated pollutants. 7. Reinstall media cages and fill with new media from manufacturer or outside supplier. Manufacturer will provide specification of media and sources to purchase. 8. Replace the lid and tighten down bolts. Replace screening device, grate or manhole cover when completed . Drain Down Filter 1. Remove hatch or manhole cover over discharge chamber and enter chamber. 2. Unlock and lift drain down filter housing and remove old media block. Replace with new media block. Lower drain down filter housing and lock into place. 3. Exit chamber and replace hatch or manhole cover. www.modularwetlands.com 1_ MOOULA ~ WETLANDS Maintenance Notes 1. Following maintenance and/or inspection, it is recommended the maintenance operator prepare a maintenance/inspection record. The record should include any maintenance activities performed, amount and description of debris collected, and condition of the system and its various filter mechanisms. 2. The owner should keep maintenance/inspection record(s) for a minimum of five years from the date of maintenance. These records should be made available to the governing municipality for inspection upon request at any time . 3. Transport all debris, trash, organics and sediments to approved facil ity for disposal in accordance with local and state requirements. 4. Entry into chambers may require confined space training based on state and local regulations. 5. No fertilizer shall be used in the Biofiltration Chamber. 6. Irrigation should be provided as recommended by manufacturer and/or landscape architect. Amount of irrigation required is dependent on plant species. Some plants may require irrigation. www.modularwetlands.com Maintenance Procedure Illustration Screening Device The screening device is located directly under the manhole or grate over the Pre-Treatment Chamber. It's mounted directly underneath for easy access and cleaning. Device can be cleaned by hand or with a vacuum truck. Separation Chamber The separation chamber is located directly beneath the screening device. It can be quickly cleaned using a vacuum truck or by hand. A pressure washer is useful to assist in the cleaning process. www.modularwetlands.com ~ I• OOUI.A l\ WETLANDS Cartridge Filters The cartridge filters are located in the Pre-Treatment chamber connected to the wall adjacent to the biofiltration chamber. The cartridges have removable tops to access the individual media filters. Once the cartridge is open media can be easily removed and replaced by hand or a vacuum truck. Drain Down Filter The drain down filter is located in the Discharge Chamber. The drain filter unlocks from the wall mount and hinges up. Remove filter block and replace with new block. www.modularwetlands.com MODULAR WETLANDS Trim Vegetation Vegetation should be maintained in the same manner as surrounding vegetation and trimmed as needed. No fertilizer shall be used on the plants. Irrigation per the recommendation of the manufacturer and or landscape architect. Different types of vegetation requires different amounts of irrigation. - www.modularwetlands.com hODULAR WETLANDS Inspection Form Modular Wetland System, Inc. p. 760.433-7640 F. 760-433-3176 E. lnfo@modularwetlands.com www.modularwetlands.com Inspection Report Modular Wetlands System Project Name For Office Use Only Project Address (dty) (Zip Code) (Reviewed By) Owner I Management Company (Date) Office personnel to complete section to Contact Phone ( ) -the left. Inspector Name --------------------Date Time ____________ AM/PM Type of Inspection D Routine D FollowUp D Complaint D Storm Storm Event in Last 72-hours? 0 No 0 Yes Weather Condition Additional Notes Inspection Checklist Modular Wetland System Type (Curb, Grate or UG Vault): Size (22', 14' or etc.): Structural Integrity: Yes No Comments Damage to pre-treatment access cover (manhole cover/grate) or cannot be opened using normal lifting pressure? Damage to discharge chamber access cover (manhole cover/grate) or cannot be opened using normal lifting pressure? Does the MWS unit show signs of structural deterioration (cracks in the wall, damage to frame)? Is the inlet/outlet pipe or drain down pipe damaged or otherwise not functioning properly? Working Condition: Is there evidence of illicit discharge or excessive oil, grease, or other automobile fluids entering and clogging th unit? Is there standing water in inappropriate areas after a dry period? Is the filter insert (if applicable) at capacity and/or is there an accumulation of debris/trash on the shelf system? Does the depth of sediment/trash/debris suggest a blockage of the inflow pipe, bypass or cartridge filter? If yes Depth: specify which one in the comments section. Note depth of accumulation in in pre-treatment chamber. Does the cartridge filter media need replacement in pre-treatment chamber and/or discharge chamber? Chamber: Any signs of improper functioning in the discharge chamber? Note issues in comments section. Other Inspection Items: Is there an accumulation of sediment/trash/debris in the wetland media (if applicable)? Is it evident that the plants are alive and healthy (if applicable)? Please note Plant Information below. Is there a septic or foul odor coming from inside the system? Waste: Yes No Recommended Maintenance Plant Information Sediment I Silt I Clay No Cleaning Needed DamaQe to Plants Trash I Bags I Bottles Schedule Maintenance as Planned Plant Replacement Green Waste I Leaves I Foliage Needs Immediate Maintenance Plant Trimming Additional Notes: 2972 San Luis Rey Road, Oceanside, CA 92058 P (760) 433-7640 F (760) 433-3176 Maintenance Report Modular Wetland System, Inc. P. 760.433-7640 F. 760-433-3176 E. lnfo@modularwetlands.com www.modularwetlands.com i__ MODULAR WETLANDS Cleaning and Maintenance Report Modular Wetlands System Project Name ----------------------------------------For Office Use Only ProjectAddress -----------------------------:-::-:---~..,-,...,.-------(city) (Zip Code) (Reviewed By) Owner/Management Company __________________________________ _ Contact ---------------------- Inspector Name ------------------- Type of Inspection 0 Routine 0 FollowUp 0 Complaint Weather Condition Site GPS Coordinates Manufacturer I Trash Map# of Insert Description I Sizing Accumulation Lat: MWS Catch Basins Long: MWS Sedimentation Basin Media Filter Condition Plant Condition Drain Down Media Condition Discharge Chamber Condition Drain Down Pipe Condition Inlet and Outlet Pipe Condition Comments: Phone ( Date 0 Storm Additional Notes Foliage Sediment Accumulation Accumulation Time !lUSe) Office pe"'onnel to complete section to the left. ------~---AM/PM Storm Event in Last 72-hours? 0 No 0 Yes Condition of Media Operational Per Total Debris 25/50/75/100 Manufactures' Accumulation (will be changed Specifications @75%) (If not, why?) 2972 San Luis Rey Road, Oceanside, CA 92058 P. 760.433.7640 F. 760.433.3176 Project Name Cleaning and Maintenance Report Modular Wetlands System For Office Use Only ProjectAddress -----------------------------;::;;::;----;;;::-;;::;:;-------(city) (Zip Code) (Reviewed By) Owner/Management Company ___________________________________ _ Contact ----------------------- Inspector Name -------------------- Type of Inspection D Routine D FollowUp D Complaint Weather Condition Site GPS Coordinates Manufacturer I Trash Map# of Insert Description I Sizing Accumulation Lat: MWS Catch Basins Long: MWS Sedimentation Basin Media Filter Condition Plant Condition Drain Down Media Condition Discharge Chamber Condition Drain Down Pipe Condition Inlet and Outlet Pipe Condition Comments: Phone ( Date Dstorm Additional Notes Foliage Sediment Accumulation Accumulation Time ll':ael Office personnel to complete section to the fell AM/PM ------ Storm Event in Last 72-hours? D No D Yes Condition of Media Operational Per Total Debris 25/5on5/1 oo Manufactures' Accumulation (will be changed Specifications @75%) (If not, why?) 2972 San Luis Rey Road, Oceanside, CA 92058 P. 760.433.7640 F. 760.433.3176 Appendix 7 --~ ___ 2_0l_O_ON:_~Section 303(d) U NOTE: NOT APPLICABLE RECEIVING WATER BODY, ENCINAS CREEK, NOT LISTED ON 2010 CLEAN WATER ACT SECTION 303(d) LIST. Appendix8 Hydrology Exhibifs and Calculations J , I r __, "- C....J EXISTING PVT STORM DRAIN .j -~ ~ :~ l ~1· .. i .,,._ -'T-- El<. DETENTION •• BASIN._,· \. / EXISTING PVT CATCH BASIN/ / / / / BASIN 1 0100 -2.9 CFS TO SURFACE / / I / / STORM DRAIN PROPERTY LINE SUB-BASIN NAME IJJ / TOTAL ~ .... FUSCOE ENGINEERING 6390 Cf"""1Wkh Dt , Suue 170 San~.Cal:ilonllll92122 Id 858.554 1.500 • f.u 158.507.()335 -...tu:Koe (Om b ... ~ I . EXISTING HYDROLOGY COSTCO CARLSBAD GAS EXPANSION JULY l, 2015 I ,_l, =---., 11 J . I I ·~ J [! jl = :I BASIN 1A 0100 = 0.5 CFS (TO BMP AND PVT SO) EXISTING PVT STORM DRAIN ,/ / L. PROPOSED PVT STORM DRAIN I / / / / / / / / IJ ! I I PROPOSED CONC. _., ,, GUTTER. Ocop=0.32 CFS · / BASIN 18 0100 = 2.3 CFS (0.3 CFS GUTTER FLOW WEST TO BMP AND PRIVATE STORM DRAIN, 2.0 CFS SURFACE FLOW SOUTH) MEDIA FILTER BMP OW0=0.09 CFS 0100=0.8 CFS I LEGEND BASIN BOUNDARY FLOW ARROW ~ EX CONTOUR STORM DRAIN --=so=--- PROPERTY LINE ---- SUB-BASIN NAME OJ BASIN AREA (AC) IMP~~us IMPEIMOUS RUNOFF (SOFT) ll COE FF 1A 0.10 4342 18 0.44 17180 TOTAL 0.54 21522.00 '"~ .lll'J FUSCOE E p; C INE EI I li C 6390 Grttnv,1ch Di-., Sul1e 170 San~.Calilomla92122 ict 858 554.1500 • ru 858.597 0335 www.flUC:oe.rom 100,; 0.87 90ll 0.84 b ... ~ I . PROPOSED HYDROLOGY COSTCO CARLSBAD GAS EXPANSION JULY I , 2015 Hydrology Calculations 7/1/15 Existing Hydrology Sub-Area, A Runoff Basin (A C) Coeff, C 1 0.54 0.85 Total 0.54 Proposed Hydrology Sub-Area, A Runoff Basin (A C) Coeff, C 1a 0.10 0.87 1b 0.44 0.84 Total 0.54 Time of Concentration (Min) 5 Time of Concentration (Min) 5 5 Intensity, i (in/hr) 2-Yr 10-Yr 100-Yr 3 4.4 6.3 Intensity, i (in/hr) 2-Yr 10-Yr 100-Yr 3.0 4.4 6.3 3.0 4.4 6.3 Costco Carlsbad Gas Expansion Project 2156-079-04 Peak Runoff, Q (cfs) 2-Yr 10-Yr 100-Yr 1.4 2.0 2.9 1.4 2.0 2.9 Peak Runoff, Q (cfs) 2-Yr 10-Yr 100-Yr 0.3 0.4 0.5 1.1 1.6 2.3 1.4 2.0 2.9 Note: Hydrology Calculations Performed Per County of San Diego Drainage Design Manual (2003), Rational Method (Q=CiA). Time of Concentration was conservatively assumed to be 5 Minutes due to short drainage flow lengths. See attachments for Runoff Coefficient and Intensity Calculations