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HomeMy WebLinkAboutCDP 04-42; North County Pontiac/GMC; Storm Water Management Plan; 2005-10-01CE C (Q) R >^ E R S ir Q >^ E E N (G ][ NIEIEJRTNG CONSULTING CIVIL ENGINEERS & LAND SURVEYORS Civil Engineering Surveying Services Sewer & Water Engineering Storm Water Engineering Storm Water Quality SWPPP Road And Street Engineering School Site Engineenng Site Development Planning And Sun/eying Construction Staking Services Redevelopment Area Enhancement Engineering North County GIVIC/Pontiac 5425 Paseo Del Norte Carlsbad, California Prepared for: The Automotive Group 355 West Vista Way Vista, CA Storm Water Management Plan Report Prepared bv: Cornerstone Engineering, Inc. 620 Mission Avenue Oceanside, Ca 92054 June 2005 Revised October 2005 ca 2505 "M" Street Bakersfield, CA 93301 Tel: 661.325.9474 - Fax 661.322.0129 www.comerstoneeng.com 620 IVIission Ave Oceanside, CA 92054 Tel: 760.722.3495 - Fax 760.722.3490 storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad. CA CORNERSTONE ENGINEERING, INC. TABLE OF CONTENTS Vicinity Map Applicants Certification of Storm Water Management Plan Introduction Proposed Project Improvements Pollutants and Conditions of Concern Mitigation Measures to Protect Water Quality Flow-Based BMP Sizing Calculations Appendix A: Project Information Sheet Appendix B: Maintenance Considerations Appendix C: Employee Training Program Appendix D: California Stormwater Quality Association BMP Fact Sheets Appendix E: "FloGard" Downspout Filters Specifications Appendix F: "FloGard" Plus - Catch Basin Inserts Specifications Appendix G: Curb Marker Information Appendix H: Grass Pave Specifications storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad. CA CORNERSTONE ENGINEERING, INC. Vicinity IVlap OE « 2005 MtpQuMt.cwn, Inc. =]300m j:\projects\817- north county gmc\817-01\docs\reports\817-01finalswmp(revised10_ 14 05).doc Storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad. CA CORNERSTONE ENGINEERING, INC. STORM WATER MANAGEMENT PLAN APPLICANT'S CERTIFICATION OF SWMP I certify under a penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry ofthe person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penahies for submitting false information, including the possibility of fine and imprisonment for knov^dng violations. Date ^jdnaM^icJ /vN?^. 7(^0^ Soi^^ 6"7^^ Name &nd Title ^ Telephone Number ''•fnojoiAiAo y, Storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING, INC. 5425 Paseo Del Norte, Carlsbad, CA STORM WATER MANAGEMENT PLAN, SWMP INTRODUCTION For the proposed project, a Stormwater Management Plan (SWMP) is required under the Regional Water Quality Control Board Order 2001-01 and the Carlsbad Standard Urban Stormwater Mitigation Plan The ''"IP^^»1/^!f ^^^^ *° address the water quality impacts from the proposed "North County Pontiac and GMC Dealership by The Automotive Group. Best Management Practices (BMP's) will be utilized to provide a long-term solution to water quality. This SWMP is intended to ensure the effectiveness of the BMP s through maintenance that is based on long-term planning. PROJECT DESCRIPTION The prpject property is located at 5425 Paseo Del Norte in Carlsbad, California. The site is bordered by Paseo Del Norte to the east and Interstate Highway 5 to the west. The 3.4 acre lot is zoned "C-2" which is defined as a General and Neighborhood Commercial Zone. The project will consist of an expansion of the existing dealership with the new construction of a service and parts building. The majority of the site surfaces will be impervious. It will have post construction slopes ranging from 0% to 8/o. The site drains to three separate drainage sub-areas. The sub-areas are delineated as shown on the Drainage Sub-Areas Map which will be provided under a separate cover in the drainage study The sub-areas will direct the surface water runoff, by use of swales and gutters, to three on-site drop-grate catch basins. All three catch basins empty into a CalTrans vegetated drainage channel running alonq the west border of the site. » » The expected runoff rates for the four sub-areas can be seen in Table 1 below These values were calculated for the 10-year storm event. Methodology from the San Diego County Hydrology Manual was followed. 10 Year Storm Event Drainage Sub-Area A Drainage Sub-Area B Drainage Sub-Area C Proposed (cfs) 2.90 2.39 2.50 Table 1: Expected Runoff Rates PROPOSED IMPROVEMENTS: Street improvements There are no proposed street improvements for this project. Water and Sewer Improvements Sanitary sewer laterals from the proposed buildings will tie into a 10" VCP Sewer Main in Paseo Del Norte Water Sen/ice (Domestic/Fire) will be from an existing 12" A.C. Water Main in Paseo Del Norte. Storm Water Pollution Control Improvements "FloGard" Downspout Filters, Grass Pave, a vegetated swale, storm drain signage, and "FloGard" Catch Basin Inserts are the main Storm Water Pollution Control Improvements. See the section "Proiect Desian Storm Water BMP's" for additional details. storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING, INC. Related Documents: LTo?t"hf nr"!H°' ^!°sion control plans have been prepared by Comerstone Engineering Inc. as a part of the grading permit phase of this project. a a E^^neem^a Inf'"" P'^" (SWPPP) has been prepared by Comerstone bTSstone'Engin^^^^^^^^^^ '''' '''''''' ' '''''''' ^'^'^ P-P^-^ storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad. CA CORNERSTONE ENGINEERING, INC. POLLUTANTS AND CONDITIONS OF CONCERN Anticipated Pollutants from the Project Area The project is an automotive dealership with a maintenance/repair shop. The storm water runoff has the potential to carry oil and grease, suspended solids, metals, gasoline, pesticides, and pathogens to the storm water conveyance system. K a mc Soil Characteristics According to the San Diego County Hydrology Manual, the project area consists of Soil Type "B" No evidence of excessive erosion resulting from concentrated runoff was witnessed at the site Soils of type B have a moderate infiltration rate when thoroughly wetted; chiefly soils that are moderately deep to deep, moderately well drained to well drained, and moderately coarse textured. The rate of water transmission is moderate. The pre-construction runoff coefficient was calculated to be 0 89 the post construction runoff coefficient was calculated to be 0.86 (See attachment D of SWPPP for calculations) Receiving Waters The project falls within the Aqua Hedionda Hydrologic Area Boundary 904.30 which is a part of the Carlsbad Hydrologic Unit, Hydrologic Unit Basin Number 904. The water bodies in the Aqua Hedionda Hydrologic Area are Aqua Hedionda Creek, Aqua Hedionda Lagoon, and Letterbox Canyon The total watershed size for Carlsbad Hydrologic Basin is 210 square miles. MITIGATION MEASURES TO PROTECT WATER QUALITY To address water quality for the project, BMP's will be implemented during construction and post- construction^ The construction activities are regulated by the California state wide General Construction Permit and the City of Carlsbad. Construction BMP's it^^^Pt'O" °f t^^e construction BMP's will be listed in the Storm Water Pollution Prevention Plan (SWPPP). The planned construction BMP's are, but not limited to, the following: EC-1, Scheduling EC-2, Preservation of Existing Vegetation EC-3, Hydraulic Mulch EC-5, Soil Binders EC-10, Velocity Dissipation Devices SE-1, Silt Fence SE-7, Street Sweeping ad Vacuuming SE-8, Sand Bag Barrier SE-10, Storm Drain Inlet Protection WE-1, Wind Erosion Control TC-3, Entrance / Outlet Tire Wash NS-1, Water Conservation Practices storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING, INC. NS-2, Dewatering Operations NS-3, Paving and Grinding NS-6, Illicit Connection/ Discharge NS-7, Potable Water Irrigation NS-8, Vehicle and Equipment Cleaning NS-9, Vehicle and Equipment Fueling NS-10, Vehicle and Equipment Maintenance NS-12, Concrete Curing NS-13, Concrete Finishing WM-1, Material Delivery and Storage WM-2, Material Use WM-3, Stockpile Management WM-4, Spill Prevention and Control WM-5, Solid Waste Management WM-6, Hazardous Waste Management WM-8, Concrete Waste Management WM-9, Sanitary/Septic Waste Management WM-10, Liquid Waste Management The selected Construction BMP's for this project will be constructed and maintained to comply with apphcable ordinances and guidance documents. The on-site contractor will be responsible for implementing and maintaining the BMP's. For further information regarding any of these BMP's please consult the SWPPP report. Site Design BMP's This project was designed so as to minimize, to the maximum practical extent, the introduction of pollutants and conditions of concem that may result in significant impacts, generated from site runoff to the storm water conveyance system. The objective will be accomplished by the following: • Minimize Directly Connected Impervious Areas. Where landscaping is proposed, drain rooftops onto adjacent landscaping prior to discharge into the storm drain system; where landscaping is proposed dram sidewalks and parking lots. K H • Maximize canopy interception and water conservation. Presen/e existing native trees and shrubs- plant additional native or drought tolerant trees and large shrubs in place of non-drought tolerant exotics. • Control flows with concrete dissipaters. Dissipaters reduce flow rates resulting in less erosion at entrances to natural drainage systems. 14 storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING. INC. Source Control BMP's Source Control BMP's will consist of measures and practices to prevent pollution runoff. The California Stormwater Quality Association BMP fact sheets are available in the appendices. The fact sheets give ? '"^°rf"a*'on on applications, implementation, inspection and maintenance of BMPs Each BMP IS Iisted with Its corresponding California Stormwater Quality Association identification number to allow for easier location of fact sheets in Appendix D. • Trash Storage Areas (SD-32): Runoff that comes in contact with trash storage areas can often become polluted. In addition, loose trash and debris can be easily transported by water or wind to nearby storm dram inlets, channels or creeks. The basic design parameters outlined in fact sheet SD- 32 will be used and modified for this development application. • Vehicle and Equipment Cleaning (SC-21): Vehicle washing, equipment washing, and steam cleaning may contnbute high concentrations of metals, oil, grease, solvents, phosphates, and suspended solids to wash waters which dram to stormwater conveyance systems. The vehicle wash area is equipped with a clanfier which is connected to the sanitary sewer system. The vehicle wash area will be equipped with a roof or overhang to divert rainwater. An IWD permit will be obtained from the Bureau of Sanitation for the sanitary sewer connection. The basic design parameters from fact sheet SC-21 will be used and modified for this development application. . Vehicle and Equipment and Repair (SC-22): Vehicle or equipment maintenance and repair are potentially significant sources or stormwater pollution, due to the use of harmful materials and wastes dunng maintenance and repair processes. Engine repair, service, replacement of fluids and outdoor equipment storage can impact water quality if it comes in contact with stormwater runoff Vehicle repair/maintenance will occur indoors and be designed to avoid stormwater run-on or contact with stormwater runoff. The bay drainage system will capture all wash-water, leaks and spills and is equipped with a clanfier which is properly connected to a sanitary sewer. An IWD permit will be required from the Bureau of Sanitation - Industrial Waste Management Division for sewer connection The basic design parameters from fact sheet SC-22 will be applied and modified for this development application. Waste Handling and Disposal (SC-34) - Improper storage and handling of solid wastes cal allow toxic compounds, oils and greases, heavy metals, nutrients, suspended solids and other pollutants to enter stormwater runoff. The discharge of pollutants to stormwater from waste handling and disposal can be prevented and reduced by tracking waste generation, storage, and disposal; reducing waste generation and disposal through source reduction, reuse, and recycling; and preventing run-on and runoff. This BMP should be addressed in employee training. More information on implementing this BMP can be found in fact sheet SC-34. Safer Alternative Products (SC-35) - Site managers should promote the use of less harmful products and products that contain little or no TMDL pollutants. Altematives exist for most product classes including chemical fertilizers, pesticides, cleaning solutions, janitorial chemicals, automotive and paint products, and consumables (Batteries, fluorescent lamps). This BMP should be addressed in employee training. There is more information on this BMP in fact sheet SC-35. Buildings and Grounds Maintenance (SC-41) - Stormwater runoff from building and grounds maintenance activities can be contaminated with toxic hydrocarbons in solvents fertilizers and pesticides, suspended solids, heavy metals, abnormal pH, and oils and greases Utilizing the protocols in fact sheet SC-41 will prevent or reduce the discharge of pollutants to stormwater from buildmg and grounds maintenance activities by washing and cleaning up with as little water as possible, following good landscape management practices, preventing and cleaning up spills immediately, keeping debris from entering the storm drains, and maintaining the stormwater collection system. Building Repair and Construction (SC-42) - Building modifications varying from minor and normal building repair to major remodeling may become necessary on site. These activities can generate pollutants including solvents, paints, paint and varnish removers, finishing residues, spent thinners j:\projects\817- north county gmc\817-01\docsVeports\817-01finalswmp(revised10_14_05). doc stomi Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING, INC. soap cleaners, kerosene, asphalt and concrete materials, adhesive residues and old asbestos installation. Protocols in fact sheet SC-42 are intended to prevent or reduce the discharge of pollutants to stormwater from building repair, remodeling, and construction by using soil erosion controls enclosing or covenng building material storage areas, using good housekeeping practices, using safer alternative products, and training employees. Parking / Storage Area Maintenance (SC-43) - Parking lots and storage areas can contribute a number of substances, such as trash, suspended solids, hydrocarbons, oil and grease and heavy me ais that can enter receiving waters through stormwater runoff or non-stormwater discharges The protocols in fact sheet SC-43 are intended to prevent or reduce the discharge of pollutants from parking/ storage areas and include using good housekeeping practices, following appropriate cleanina BMPs, and training employees. ^ r-r r a Drainage System Maintenance (SC-44) - As a consequence of its function, the stormwater conveyance system collects and transports urban runoff and stormwater that may contain certain pol utants. The protocols in fact sheet SC-44 are intended to reduce pollutants reaching receivina waters through proper conveyance system operation and maintenance. • Storm Drain Signage (SD-13) - Markers will be placed in plain site on the face of curb inlets or catch basins. The markers will make the public aware of the destination of pollutants discharged into storm water Examples of preferred storm drain markers can be seen in Appendix G and at http://www.dasmanufacturina.com/storm/index.html. • Spill Prevention Control and Cleanup (SC-11) - Many activities that occur at an automotive maintenance and sales site have the potential to cause illegal spills. Spills and leaks are one of the argest contnbutors of stormwater pollutants. A spill prevention and control plan should be derived for !,. ^l. / ® P'^" incorporated into employee training. Practices detailed in fact sheet SC- 11 will be applied to fit this development application. • Employee Training: A detailed training program has been described in Appendix C This should be implemented by the property owner. Treatment Control BMP's All treatment control BMPs shall infiltrate, filter, and/or treat the required runoff volume or flow prior to discharging to any receiving water body supporting beneficial uses. Multiple post-construction treatment control BMI^s for the project have been chosen. Shared BMP's shall be operational prior to the use of any dependent development or phase of development. • Vegetated Swale (TC-30) - A vegetated swale runs along the entire north property boundary The site will be graded such that all runoff in the adjoining sub area will be directed through the said swale to allow for infiltration and treatment The BMP fact sheet TC-30 is attached in Appendix D. • "FloGard" Downspout Filters by Kristar: The "FloGard" downspout filters will be installed in all downspouts. The "FloGard" downspout filter is building-mounted and designed to collect particulates debns, metals, and petroleum hydrocarbons from stormwater runoff. The working chamber of the downspout filter is made of a durable dual-wall geotextile fabric liner encapsulating an adsorbent which IS easily replaced and provides for flexibility, ease of maintenance and economy It is designed to collect particulates and debris, as well as metals and petroleum hydrocarbons (oils and greases) which rnay be suspended in roof runoff. The FloGard filters perform as an effective filtering device at low flows and are equipped with a high flow bypass which will not impede the system's maximum desiqn flow. FloGard Downspout Filters specifications are included in Appendix E. • Storm Drain Inserts (MP-52): 'FloGard" plus Catch basin inserts will be installed on all of the flat grated catch basm inlets. The "FloGard" insert is a multipurpose catch basin insert designed to capture sediment, debns, trash and oils from low flows. The high flow bypass allows greater flows to bypass the j:\projects\817- north county 9mc\817-01\docsVeports\817-01finalswmp(revised10_14_05).doc storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING. INC. device while retaining sediment and larger floatables, it also allows sustained maximum design flows under extreme weather conditions. Specifications for this product are available in Appendix F BMP fact sheet MP-52 is included in Appendix F. • Pervious Pavements (SD-20): Grass Pave is the product selected for this application Grass Pave is a load beanng porous surface (Approx 50% permeable). It also allows for sediment deposits and slows runoff discharge. Grass pave will be installed in an approximate 300 foot by 15 foot strip along the western site boundary as a replacement to an impervious surface. BMP fact sheet SD-20 is attached in Appendix M. Specifications for Grass Pave can be seen in Appendix H. INSPECTION, MAINTENANCE AND RECORDS It shall be the responsibility of the property owner to not only implement but also inspect, maintain repair or replace, and record the efforts noted in this SWMP. The property owner(s) are responsible for the upkeep of the BMPs and inspection and maintenance of the "FloGard" systems as part of their parking lot maintenance (within their purview). The property owner(s) are responsible for everyday good housekeeping measures and site inspection/maintenance efforts intended to maintain stormwater qualitv A suggested maintenance schedule is attached as Appendix B. The property owner's inspections shall include all drainage facilities prior to any measurable rain at the beginning of the rainy season (on or about October 15) and the end of the rainy season (on or about April 15 ) inspections of irrigation system, landscape areas (set 2" below top of curb), parking lot sweeping trash container and dumpster levels housekeeping efforts. Inspections should be scheduled monthly after imgation, parking lot sweeping and refuse pickup. Should the inspections reveal non-compliance the property owners are to take measures to correct the deficiencies in a timely manner. It shall be the responsibility of the property owner(s) to maintain a clean and clear site to adhere to these SWMP measures on a regular basis, with adjustments made to the schedule as needed. The property owner is to maintain records of all inspections, maintenance, repairs and or replacements for review by authorized agencies. Maintain records of all such activities in this SWMP document. CONCLUSION The North County Pontiac & GMC automotive dealership will not adversely affect downstream properties due to storm water runoff. Construction BMP's will reduce potential pollutants during the construction phase. Several post construction BMP's will be used to control the sources of storm water pollution and also treat storm water runoff before it leaves the site. The site will be designed in a manner that minimizes impervious surfaces wherever possible and also protects slopes and channels. In order to control the sources of stormwater pollution, special attention will be paid to: trash storage areas vehicle wash areas vehicle and equipment cleaning methods, the vehicle equipment and repair bay, and employee training' There will also be a series of treatment control BMP's to mitigate anything that escapes the source controi BMP s. The treatment control BMP's will consist of a vegetated swale, "FloGard" downspout filters and Storm Drain Inserts. storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING. INC. APPENDIX A Storm Water Management Plan General Project Information Project Name: North Countv GMC: 5425 Paseo Del Norte: Carlsbad. Ca Project Address and Assessor Parcel No.(s): 5425 Paseo Del Norte Street: City: County:. Assessor Parcel No.(s): Project Owner: Name: Address: Phone No.: Project Engineer: Name: Address: Phone No.: Carlsbad. California 92008-4427 San Dieqo 11-060-01 The Automotive Group 355 West Vista Way Vista. California 92083 (760)510-4777 Cornerstone Enqineerinq. Inc. 2191 El Camino Real. Suite #208 Oceanside. CA 92054 (760) 722-3495 storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING, INC. ATTACHED CALCULATIONS Downspout Filters The following calculations were conducted in order to analyze the Kristar Downspout Filters capability of accomodating the calculated peak flows. CALCULATIONS As directed by the California Regional Water Quality Control Board ORDER NO. 2001-01, the flow based BMP's will be sized with a maximum flow rate of runoff produced from a rainfall intensity of 0.2 inches per hour. The building rooftops areas were measured using AutoCAD, building "A" is the most westerly and building B is the most easterly. The rational method was used to calculate flow rates. It was assumed both buildings have 6 downspouts and runoff flow will be distributed equally throughout The Rational Equation: Q = CIA Where Q = Flowrate (cfs) C = Runoff Coefficient I = Rainfall Intensity (In/hr) A = Area (Ac) For Building A Therefore, For Building B: Therefore, Q = (1)*(0.2 in/hr)*(0.055 acres) = 0.011 cfs Qdownspout= 0.011cfs/6downspouts = 0.002 cfs/ downspout Q = (1)*(0.2 in/hr)*(0.114 acres) = 0.023 cfs 'Jdownspout = 0.023 cfs/ 6 downspouts = 0.004 cfs/ downspout CONCLUSION The expected downspout peak flows for buildings A and B are 0.002 cfs and 0.038 cfs, respectively. For this application, model # FS-DS4 with an inlet diameter of 4", will be used. According to Kristar specifications, the peak allowable filtered flow for this model is 0.35 cfs and the total bypass capacity is 1.15 cfs. From these calculations it can be seen that the Kristar Model #FS-DS4 will be more than accommodating of peak roof runoff flows. Also, it should be noted that model FG-DS4 is the smallest capacity downspout filter, therefore any model of Kristar Downspout Filter will be acceptable. Catch Basin Inserts The following calculations were conducted in order to analyze the Kristar Flo-Gard Plus Catch Basin Filter Inserts capability to handle the calculated peak flows. CALCULATIONS The catch basin inserts will be analyzed in a manner similar to the downspout filters. The rational method will be used, with a rainfall intensity of 0.2 inches per hour. For Drainage Sub-Area A Q = [(0.9)*(0.2in/hr)*(1.00 acres)] + [(0.8)*(0.2 in/hr)*(0.19 acres)] = 0.210 cfs For Drainage Sub-Area B Q = [(0.9)*(0.2in/hr)*(0.87 acres)] + [(0.8)*(0.2 in/hr)''(0.09 acres)] = 0.171 cfs lyp'CjocO-'-i 17 - ncrtii coi^nty r;n'y\:i i .r ;)]'. !r.:;yn,t^\S;/-OIlin.ir.o.r! Slorm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING, INC. For Drainage Sub-Area C Q = [(0.9)*(0.2in/hr)*(1.13 acres)] + [(0.8)*(0.2in/hr)*(0.10 acres)] = 0.219 cfs CONCLUSION The expected catch basin peak flow for drainage sub areas A, B and C are 0 210 0 171 and 0 219 cfs respectively. For this application, model # FGP-36F will fit the dimensions specified for the catch basin This model has a filtered flow capacity of 2.4 cfs, so it will be more than accommodating of the sizinq flow quantities. !:'oro;oor-,\yi/ nc^tn coonn onhyy '/'01\doo.^\i.-!X'tryyi y C1i::yils>i',ni::i(r,-viyi:-d!0 v-* dbj Jo. storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING, INC. APPENDIX B Maintenance Considerations - "FloGard" Trench Drain Filters: Filters will be inspected and cleaned 3 times annually. Filter medium will be changed once annually. If necessary maintenance and installation can be conducted by DPS (Drainage Protection Sen/ices). Contact Deb Giovannoni at dqiovannoni(ajkristar.com or phone (800) 579-8819 or (707) 524-8181 for more information on DPS. - "FloGard" Trash and Debris Guards: Trash and Debris Guards will be inspected at least 4 times monthly. The screens will be cleaned twice monthly. If necessary maintenance and installation can be conducted by DPS (Drainage Protection Services). Contact Deb Giovannoni at dqiovannoni@kristar.com or phone (800) 579-8819 or (707) 524-8181 for more information on DPS. - Trash Storage Areas: The integrity of structural elements that are subject to damage must be maintained by the owner. Maintenance agreements between the local agency and the owner may be required. - Vehicle Washing Areas: Clarifier and oil - water separator require monthly cleanouts to remove oil, grease and maintain effectiveness. During periods of heavy rainfall, cleanout is required more often to ensure pollutants are not washed through the trap. It is also important to sweep the maintenance area weekly, if it is paved, to collect loose particles, and wipe up spills with rags or other absorbent materials. Do not hose down the area to a storm drain. - Trash containers are to be picked up two (2) times a week (or more often if needed), and trash compactor pads are to be inspected and cleaned on a daily basis. Sticky, slippery or greasy surfaces shall be cleaned upon discovery. Trash compactor units are to be sealed to eliminate any fluids from draining out of the unit - Parking Lot Sweeping and Power Washing must be done on a regular basis to maintain a dust-free, litter-free surface. The parking lot must also be swept prior to the rainy season (on or about October 15th) and after any storm event that produces trash and litter. * A maintenance log will be kept to record all maintenance actions. This log will be kept on-site J:\projects\817- north county gmc\817-01\docsVeports\817-01finalswmp(revised10_14_05).doc storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING. INC. Typical Maintenance Schedule Item Daily Weekly Monthly After Rain Event October 15th Site Catch Basins X X X Site Parking Lot X Site Irrigation Overspray X Site Landscaping X Trash Enclosures X X Trash Receptacles X Vegetated Swale X X 'proiocr:r„] 17 • nortli noanty rin>c\y I y-Oi\Jcr. •-. -o.nn.niwrrppirvX'irodlC 14 0;})., storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING. INC. APPENDiX C EMPLOYEE TRAINING PROGRAM A training program is required to educate the property owner(s), store or shop managers and key personnel, property managers, and site maintenance staff (herein referred to as 'managers') about the importance of adhering to this SWMP stormwater mitigation program as a part of their ongoinq responsibilities. These managers will also be responsible for instruction of their employees (or their maintenance staff members) on good housekeeping measures, inspection, maintenance and repair of stormwater pollution prevention devices, record keeping and reporting procedures. It is the responsibilitv of the managers to review this SWMP document and this training overview and become knowledgeable in Its best management practices requirements. Employee education and maintenance staff instruction entails a program that informs both employees and mamtenance staff about storm water pollution prevention measures. Programs for employees and differenT"*^^ staff should be separate as the information and resources presented to each group will be Employee Training Employee training should include information about good housekeeping measures, activities that cause potential storm water pollution (i.e. gas or oil leaks, wash-down of debris, hazardous wastes) It should also inform them of actions they can take when they observe inappropriate disposal of wastes In addition employees should be encouraged to participate in their own ways (i.e. proper vehicle maintenance car pooling)^ This section highlights the importance of training and integrating the elements of employee training from the individual source controls into a comprehensive training program as a part ofthe facilities management of pollution efforts. ^ OBJECTIVES Employees should be trained based on four objectives: o Promote a clear identification and understanding of the pollution problem, includinq activities with the potential to pollute stormwater o Identifying possible solutions o Promote employees ownership of the problems and the solutions as part of the 'team' effort to control pollution. o Integrate employee feedback into the training process and BMP implementation APPROACH o Integrate training regarding storm water quality management with any existing training programs that may be required for your business by other regulatory agencies. o Businesses, particularly smaller ones that are not regulated, may use the information in this SWMP document to develop their own training program to reduce their potential to pollute. The managers understanding of the training process and subsequent employee training is a vital component of many of the individual - employee driven - efforts to implement the BMPs included in this SWMP document The following is a compilation ofthe training aspects: EQUIPMENT WASHING (See also Appendix D) o Train employees in standard - and safe - cleaning procedures and spill cleanup techniques Refer to the equipment guidelines. :ci:yyi7 - noi'h oonlitv qniyri i 7 0 r.Jro.-'.r storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING. INC. o Maintain spill rags nearby to quickly contain any spills away from floor sinks. EQUIPMENT MAINTENANCE AND REPAIR (See also Appendix D) o Train employees in standard operating procedures and spill prevention, o Train employees in safe cleanup techniques. o Post notices to remind employees not to pour waste materials down storm drain inlets. o Stress correct clothing and protective wear when performing maintenance and repair tasks. OUTDOOR LOADING AND UNLOADING OF MATERIALS (See also Appendix D) o Use a written operations plan that describes safe procedures for loading and unloading of materials. o Have an emergency spill cleanup plan readily available. Keep stormwater hotline (760-602- 2799) posted. o Enriployees trained in spill containment and cleanup should be present during loadinq and unloading operations. ^ ^ OUTDOOR CONTAINER STORAGE OF LIQUIDS (See also Appendix D) o Employees trained in emergency spill cleanup procedures should be present when dangerous liquid waste, liquid chemicals and other liquids are handled. Outdoors storage should be temporary only and not encouraged. o If required, specially trained professionals should be retained to provide safety checks to Identify and correct potential problems with outdoor storage tanks and mechanical devices. CONTAMINATED OR ERODIBLE SURFACE AREAS (See also Appendix D) o Train employees to recognize when a spill contains potentially hazardous materials - by noting container labels, by observing signs or any reaction to the air or surface - and immediately take measures to protect employees and customers, call authorities, and contain the spill if safe to do so. Maintenance Staff Training Maintenance staff should be made aware of storm water pollution prevention efforts. Implementation of the inforrnation in this SWMP document will help to minimize the potential for storm water pollution durinq routine site maintenance operations. At a minimum, maintenance staff should be trained on proper spill containment procedures facilitv inspection and cleanup, and good housekeeping measures. Their input should be duly recognized and viable suggestions should be implemented. / y Maintenance staff members typically include, but are not limited to: o Landscape maintenance o Refuse haulers o Building maintenance / custodial personnel o Catch basin BMP inspection and maintenance company o Grease interceptor waste haulers o Repairmen, maintenance workers, painters o Parking lot sweepers GROUND MAINTENANCE storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING, INC. o Personnel who use pesticides, fertilizers, and herbicides should be properly trained in the use of these chemicals. Verify that they have been certified by the governing agency. o Observe that the placement of the chemicals contained is in the area intended and not 1) oversaturated 2) placed on paved areas or 3) dispersed near site catch basins o Instruct refuse haulers to clean up any spills which occur during dumpster loading. o Instruct oil separator waste haulers to maintain a clean area during and after operations. o Schedule parking lot sweepers on a regular basis so that there is no buildup of site debris o Make sure landscape maintenance workers understand that they are NOT to sweep grass cuttings into the gutters or catch basins. o Include appropriate language in contracts indicating the responsibilities required to implement these SWMP storm water pollution prevention measures. BUILDING MAINTENANCE o Instruct custodians to keep storage closets clean of debris and clearly label hazardous cleaning materials o Include appropriate language in contracts indicating the responsibilities required to implement these SWMP storm water pollution prevention measures BUILDING REPAIR, REMODELING, CONSTRUCTION o Proper education of off-site contractors is often overlooked. The conscientious efforts of well trained staff can be lost by unknowing off-site contractors, so make sure they are well informed about what they are expected to do - and not do. o Include appropriate language and specifications in contracts indicating the responsibilities required to implement these SWMP storm water pollution prevention measures o Require collection and disposal of all waste materials to a lawful dumpsite. Encourage recycling of appropriate remaining materials. o Post signs to indicate proper use of residual paints, rags, used oils and other potentially hazardous materials or fluids o Educate workers on proper spill prevention and cleanup. Require good housekeeping of construction work areas (See Appendix D) o Screen work areas from non-involved areas to limit the spread of debris. Training Implementation Manager, employee and maintenance staff instruction in storm water pollution prevention BMP's entail ongoing education contained in this SWMP document and implementation of supplemental information as It becomes available. An effective means of implementation of this SWMP is the integration of storm water pollution prevention education into the employee's schedule. Following are suggested times to schedule SWMP related training: 1. At the time of new employee orientation. 2. At the time of implementation of new business programs. 3. An employee employment anniversary date. 4. On or about October 15"^ of every year, recognized as the beginning of the rainy season. 5. Whenever a spill has occurred - to reinforce the importance of pollution prevention. storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING, INC. TRAINING OVERSITE As owners and managers train key personnel, who in turn train other employees, it is important to remember that a single owner and/or manager is the ultimate party responsible for ongoing training and SP H^nf °" ° ^"^^^ ^'^^ ""^"^^"^9^^^ '^^"'^d to renew their ownSng and SWMP document review on a timely basis. ^ .ncjoctsVi 07 •noith r.oynty ynry:^ 17-0Viyo:"7ryon,t;. 4ir(ritvi: storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING, INC. APPENDIX D California Stormwater Quality Association BMP Fact Sheets 170, ' county inioyy 7^0;'oo<:o\n:srirt:..\S ]7-yiyn:dr.vmiJinr^'i):o,ju) 14 a.y) Trash Storage Areas SD-32 Description Trash storage areas are areas where a trash receptacle (s) are located for use as a repository for solid wastes. Stormwater runoff from areas where trash is stored or disposed of can be polluted. In addition, loose trash and debris can be easily transported by water or wind into nearby storm drain inlets, channels, and/or creeks. Waste handling operations that may be sources of stormwater pollution include dumpsters, litter control, and waste piles. Approach This fact sheet contains details on the specific measures required to prevent or reduce pollutants in stormwater runoff associated with trash storage and handling. Preventative measures including enclosures, containment structures, and impervious pavements to mitigate spills, should be used to reduce the likelihood of contamination. Design Objectives Maximize Infiltration Provide Retention Slow Runoff Minimize Impen/ious Land Coverage Prohibit Dumping of Improper Materials ^ Contain Pollutants Collect and Convey Suitable Applications Appropriate applications include residential, commercial and industrial areas planned for development or redevelopment. (Detached residential single-family homes are typically excluded from this requirement.) Design Considerations Design requirements for waste handling areas are governed by Building and Fire Codes, and by current local agency ordinances and zoning requirements. The design criteria described in this fact sheet are meant to enhance and be consistent with these code and ordinance requirements. Hazardous waste should be handled in accordance v^th legal requirements established in Title 22, California Code of Regulation. Wastes from commercial and industrial sites are typically hauled by either public or commercial carriers that may have design or access requirements for waste storage areas. The design criteria in this fact sheet are recommendations and are not intended to be in conflict with requirements established by the waste hauler. The waste hauler should be contacted prior to the design of your site trash collection areas. Conflicts or issues should be discussed with the local agency. Designing New Installations Trash storage areas should be designed to consider the following structural or treatment control BMPs: • Design trash container areas so that drainage from adjoining roofs and pavement is diverted around the area(s) to avoid run-on. This might include berming or grading the waste handling area to prevent run-on of stormwater. ^ • li £ ^ g Q ^ Make sure trash container areas are screened or walled to ^^^*'*stormwater prevent off-site transport of trash. H^^. Quality' Association January 2003 California Stormwater BMP Handbook New Development and Redevelopment www.cabmphandbooks.com 1 of 2 SP-32 Trash Storage Areas • Use lined bins or dumpsters to reduce leaking of liquid waste. • Provide roofs, awnings, or attached lids on all trash containers to minimize direct precipitation and prevent rainfall from entering containers. • Pave trash storage areas v«th an impervious surface to mitigate spills. • Do not locate storm drains in immediate vicinity of the trash storage area. • Post signs on all dumpsters informing users that hazardous materials are not to be disposed of therein. Redeveloping Existing Installations Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define "redevelopment" in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. The definition of " redevelopment" must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. Ifthe definition applies, the steps outiined under "designing new installations" above should be followed. Additional Information Maintenance Considerations The integrity of structural elements that are subject to damage (i.e., screens, covers, and signs) must be maintained by the owner/operator. Maintenance agreements between the local agency and the owner/operator may be required. Some agencies will require maintenance deed restrictions to be recorded of the property titie. If required by the local agency, maintenance agreements or deed restrictions must be executed by the owner/operator before improvement plans are approved. Other Resources A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2002. Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2002. Model Water Quality Management Plan (WQMP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003. Ventura Countyvride Technical Guidance Manual for Stormwater Quality Control Measures July 2002. ' 2 °^ 2 California Stormwater BMP Handbook January 2003 New Development and Redevelopment www.cabmphandbooks.com Vehicle and Equipment Cleaning SC-21 Photo Credit: Geoff Brosseau Description Wash water from vehicle and equipment cleaning activities performed outdoors or in areas where wash water flows onto the ground can contribute toxic hydrocarbons and other organic compounds, oils and greases, nutrients, phosphates, heavy metals, and suspended solids to stormwater runoff. Use ofthe procedures outiined below can prevent or reduce the discharge of pollutants to stormwater during vehicle and equipment cleaning. Approach Reduce potential for pollutant discharge through source control pollution prevention and BMP implementation. Successful implementation depends on effective training of employees on applicable BMPs and general pollution prevention strategies and objectives Pollution Prevention • If possible, use properly maintained off-site commercial washing and steam cleaning businesses whenever possible. These businesses are better equipped to handle and properly dispose of the wash waters. • Good housekeeping practices can minimize the risk of contamination from wash water discharges. Objectives Cover Contain Educate Reduce/Minimize Product Substitution Targeted Constituents Sediment ~ 7" Nutrients y Trash Metals y Bacteria Oil and Grease y Organics y 31 OA Caiifornia Stormwater Quality Association January 2003 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com 1 of 5 SC-21 Vehicle and Equipment Cleaning Suggested Protocols General • Use biodegradable, phosphate-fi-ee detergents for washing vehicles as appropriate. • Mark the area clearly as a wash area. • Post signs stating that only washing is allowed in wash area. • Provide trash container in wash area. • Map on-site storm drain locations to avoid discharges to the storm drain system. • Emphasize the connection between the storm drain system and runoff, help reinforce that car washing activities affect local water quality through storm drain stenciling programs. Vehicle and Equipment Cleaning • Have all vehicle washing done in areas designed to collect and hold the wash and rinse water or effluent generated. Recycle, collect or treat wash water effluent prior to discharge to the sanitary sewer system. • If washing/cleaning must occur on-site, consider washing vehicle equipment inside the building or on an impervious surface to control the targeted constituents by directing them to the sanitary sewer. • If washing must occur on-site and outdoor: - Use designated paved wash areas. Designated wash areas must be well marked with signs indicating where and how washing must be done. This area must be covered or bermed to collect the wash water and graded to direct the wash water to a treatment or disposal facility. - Do not conduct oil changes and other engine maintenance in the designated washing area. Perform these activities in a place designated for oil change and maintenance activities. - Cover the wash area when not in use to prevent contact with rain water. • Install sumps or drain lines to collect wash water for treatment. • Use hoses with nozzles that automatically turn off when left unattended. I Do not permit steam cleaning wash water to enter the storm drain. I Pressure and steam clean off-site to avoid generating runoff with high pollutant concentrations. If done on-site, no pressure cleaning and steam cleaning should be done in areas designated as wellhead protection areas for public water supply. 2 of 5 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Vehicle and Equipment Cleaning SC-21 DisposaZ • Consider filtering and recycling wash water. • Discharge equipment wash water to the sanitary sewer, a holding tank, or a process treatment system, regardless of the washing method used. • Collect all wash water from vehicle cleaning operations and (i) discharge to a sanitary sewer, holding tank, or process treatment system or (2) run through an enclosed recycling system. • Collect and treat wash water at the facility and either recycle or discharge to the sanitary sewer system or collect and dispose of as an industrial waste. • Discharge wash water to sanitary sewer after contacting local sewer authority to find out if pretreatment is required. TVaining • Train employees on proper cleaning and wash water disposal procedm-es and conduct "refresher" courses on a regular basis. • Train staff on proper maintenance measures for the wash area. • Train employees and contractors on proper spill containment and cleanup. The employee should have the tools and knowledge to immediately begin cleaning up a spill should one occur. Spill Response and Prevention • Keep the Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date. • Have an emergency plan, equipment, and trained personnel ready at all times to deal immediately with major spills. • Collect all spilled liquids and properly dispose of them. • Store and maintain appropriate spill cleanup materials in a location known to all near the designated wash area. Other Considerations (Limitations and Regulations) • Some municipalities may require pretreatment and monitoring of wash water discharges to the sanitary sewer. • Steam cleaning can generate significant pollutant concentrations requiring that careful consideration be given to the environmental impacts and compliance issues related to steam cleaning. • Most car washing best management practices are inexpensive, and rely more on good housekeeping practices (where vehicles are washed, planning for the collection of wash water) than on expensive technology. However, the construction of a specialized area for vehicle washing can be expensive. Also, for facilities that cannot recycle their wash water, the cost of pre-treating wash water through either structural practices or planning for January 2003 California Stormwater BMP Handbook 3 of 5 Industrial and Commercial www.cabmphandbooks.com SC-21 Vehicle and Equipment Cleaning collection and hauling of contaminated water to sewage treatment plants can be cost- prohibitive. Requirements Costs • Capital costs vary as follows depending on measures implemented: - Low cost ($2000-5,000) for berm construction - Medium cost ($10,000-30,000) for plumbing modifications (including re-routing discharge to sanitary sewer and installing simple sump) - High cost ($60,000-200,000) for on-site treatment and recycling • O&M costs increase with increasing capital investment. Maintenance • Perform berm repair and patching. • Sweep washing areas frequently to remove solid debris. • Inspect and maintain sumps, oil/water separators, and on-site treatment/recycling units. Supplemental Information Design Considerations Designated Cleaning Areas • Washing operations outside should be conducted in a designated wash area having the following characteristics: Paved with Portland cement concrete - Covered and bermed to prevent contact with stormwater and contain wash water Sloped for wash water collections - Discharges wash water to the sanitary or recycle treatment process waste sewer, or to a dead-end sump Equipped with an oil/water separator if necessary Examples The City of Palo Alto has an effective program for commercial vehicle service facilities. Many of the program's elements, including specific BMP guidance and lists of equipment suppliers, are applicable to industrial vehicle service facilities. The U.S. Postal Service in West Sacramento has a new vehicle wash system that collects, filters, and recycles wash water. 4 of 5 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Vehicle and Equipment Cleaning SC-21 References and Resources California's Nonpoint Source Program Plan http://www.swrcb.ca.gov/nps/index.html Clark County Storm Water Pollution Control Manual http://www.co.clark.wa.us/pubworks/bmpman.pdf King County Storm Water Pollution Control Manual http://dnr.metrokc.gOv/wlr/dss/.spcm.htm Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.scvurppp.org The Storm Water Managers Resource Center http://www.stormwatercenter.net January 2003 California Stormwater BMP Handbook 5 of 5 Industrial and Commercial www.cabmphandbooks.com Vehicle and Equipment Repair SC-22 Objectives Cover Contain Educate Reduce/Minimize Product Substitution Photo Credit: Geoff Brosseau Description Vehicle or equipment maintenance and repair are potentially significant sources of stormwater pollution, due to use of harmful materials and wastes during maintenance and repair processes. Engine repair and service (e.g., parts cleaning), replacement of fluids (e.g., oil change), and out door equipment storage and parking (leaking vehicles) can impact water quality if stormwater runoff from areas with these activities becomes polluted by a variety of contaminants. Implementation of the following activities will prevent or reduce the discharge of pollutants to stormwater ft-om vehicle and equipment maintenance and repair activities. Approach • Reduce potential for pollutant discharge through source control pollution prevention and BMP implementation. Successful implementation depends on effective training of employees on applicable BMPs and general pollution prevention strategies and objectives. Pollution Prevention • Keep accurate maintenance logs to evaluate materials removed and improvements made. • Switch to non-toxic chemicals for maintenance when possible. • Choose cleaning agents that can be recycled. Targeted Constituents Sediment Nutrients Trash Metals y Bacteria Oil and Grease y Organics y CASQA California Stormwater Quality Association January 2003 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com 1 of 7 SC-22 Vehicle and Equipment Repair • Minimize use of solvents. Clean parts without using solvents whenever possible, or use water-based solvents for cleaning. • Recycle used motor oil, diesel oil, and other vehicle fluids and parts whenever possible. Suggested Protocols General • Move maintenance and repair activities indoors whenever feasible. • Store idle equipment under cover • Use a vehicle maintenance area designed to prevent stormwater pollution - minimize contact of stormwater with outside operations through berming and appropriate drainage routing. • Avoid hosing down your work areas. If work areas are washed, collect and direct wash water to sanitary sewer. Use dry sweeping if possible. • Paint signs on storm drain inlets to indicate that they are not to receive liquid or solid wastes. • Post signs at sinks to remind employees not to pour wastes down drains. • Clean yard storm drain inlets(s) regularly and especially after large storms. • Do not pour materials down storm drains. • Cover the work area to limit exposure to rain. • Place curbs around the immediate boundaries of process equipment. • Build a shed or temporary roof over areas where parked cars await repair or salvage, especially wrecked vehicles. Build a roof over vehicles kept for parts. Material and Waste Handling • Designate a special area to drain and replace motor oil, coolant, and other fluids, where there are no connections to the storm drain or the sanitary sewer, and drips and spills can be easily cleaned up. • Drain all fluids immediately from wrecked vehicles. Ensure that the drain pan or drip pan is large enough to contain drained fluids (e.g., larger pans are needed to contain antifreeze, which may gush from some vehicles). • Do not pour liquid waste to floor drains, sinks, outdoor storm drain inlets, or other storm drains or sewer connections. • Do not put used or leftover cleaning solutions, solvents, and automotive fluids and in the sanitary sewer. • Collect leaking or dripping fluids in drip pans or containers. Fluids are easier to recycle if kept separate. 2 of 7 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Vehicle and Equipment Repair SC-22 • Promptly transfer used fluids to the proper waste or recycling drums. Do not leave drip pans or other open containers Ijdng around. • Place oil filter in a funnel over a waste oil recycling drum to drain excess oil before disposal since municipalities prohibit or discourage disposal of these items in solid waste facilities. Oil filters can also be recycled. Ask your oil supplier or recycler about recycling oil filters. Oil filters disposed of in trashcans or dumpsters can leak oil and contaminate stormwater. • Store cracked batteries in a non-leaking secondary container and dispose of properly at recycling or household hazardous waste facilities. Maintenance and Repair Activities • Provide a designated area for vehicle maintenance. • Keep equipment clean; don't allow excessive build-up of oil and grease. • Use a tarp, ground cloth, or drip pans beneath the vehicle or equipment to capture all spills and drips if temporary work is being conducted outside. Collected drips and spills must be disposed, reused, or recycled properly. • Perform all vehicle fluid removal or changing inside or under cover if possible to prevent the run-on of stormwater and the runoff of spills: - Keep a drip pan under the vehicle while you imclip hoses, unscrew filters, or remove other parts. Use a drip pan under any vehicle that might leak while working on it to keep splatters or drips off the shop floor. - Promptly transfer used fluids to the proper waste or recycling drums. Do not leave drip pans or other open containers lying around. - Keep drip pans or containers under vehicles or equipment that may drip during repairs. - Do not change motor oil or perform equipment maintenance in non-appropriate areas. • Drain oil and other fluids first if the vehicle or equipment is to be stored outdoors. • Monitor parked vehicles closely for leaks. Pans should be placed under any leaks to collect the fluids for proper disposal or recycling. • Use one of the following for lubricating vehicle-trailer coupling: - Adhesive lubricant - Plastic plates Fifth wheels with plastic inserts - On-Board lubricating system January 2003 California Stormwater BMP Handbook 3 of 7 Industrial and Commercial www.cabmphandbooks.com ^^•^^ Vehicle and Equipment Rpn^.v Parts Cleaning ' Sits.?"""' "^'^ deaners wherever possible .„ separator that is connected to a MmW ^ be discharged to an on-site oil water should be used instead oflaric eCto^„r ^'f """"t f*""-™"*''' <l*,^ents systems in place of o,«a„ic X« deSTl ^^^1,?water-based cleaning chlorinated organic solvents for parSng Mer ^5^^™ Steam cleaning. ^' ^^^^'^ for more mformation on /nspecrion . Inspect vehicles and equipment for leaks regularly and repair immediately • J^hSrr'ii-SpSn'J^^^^^ TVaining instead of disposables; these can be WLL h^^^ ""-^^T ^"P« «Pi"« them at home or at a coin-operated lauS bLin^LsT^^^^ 'f"^'"^'! ^« ^'^^n knowledge to immediately b'eginclearg?^^^^^^^ Use a training log or similar method to document training. Spill Response and Prevention • Keep your Spill Prevention Contr.1 and Countermeasure (SPCC) Plan „p.,„.da,e • Place an adequate stockpile of spil, cleanup materials where it ™11 be readily ac^ssible following three-step method for cCtagiroS^ ™''™''"'="«="P^^^^^ - Clean spills with rags or other absorbent materials - Sweep floor using dry absorbent material - Mopthefloor. Mopwater may he dischatged to the sanitaty sewer via a toilet or sink • mtSstttpilir^^ 4 Of 7 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com January 2003 Vehicle and Equipment Repair SC-22 Other Considerations (Limitations and Regulations) • Space and time limitations may preclude all work from being conducted indoors. • It may not be possible to contain and clean up spills from vehicles/equipment brought on- site after working hours. • Drain pans (usually i ft. x i ft.) are generally too small to contain antifreeze, so drip pans (3 ft. X 3 ft.) may have to be purchased or fabricated. • Dry floor cleaning methods may not be sufficient for some spills. Use three-step method instead. • Identification of engine leaks may require some use of solvents. • Installation of structural treatment practices for pretreatment of wastewater discharges can be expensive. • Prices for recycled materials and fluids may be higher than those of non-recycled materials. • Some facilities may be limited by a lack of providers of recycled materials, and by the absence of businesses to provide services such as hazardous waste removal, structural treatment practice maintenance, or solvent equipment and solvent recycling. Requirements Costs • Costs should be low, but will vary depending on the size of the facility. Maintenance • For facilities responsible for pre-treating their wastewater prior to discharging, the proper functioning of structural treatment practices is an important maintenance consideration. Routine cleanout of oil and grease is required for the devices to maintain their effectiveness, usually at least once a month. During periods of heavy rainfall, cleanout is required more often to ensure pollutants are not washed through the trap. Sediment removal is also required on a regular basis to keep the device working efficiently. • It is important to sweep the maintenance area weekly, if it is paved, to collect loose particles, and wipe up spills with rags and other absorbent material immediately. Do not hose down the area to a storm drain. Supplemental Information Further Detail ofthe BMP Waste Reduction Parts are often cleaned using solvents such as trichloroethylene, 1,1,1-trichloroethane or methylene chloride. Many of these cleaners are harmfiil and must be disposed of as a hazardous waste. Cleaning without using liquid cleaners (e.g., wire brush) whenever possible reduces waste. Prevent spills and drips of solvents and cleansers to the shop floor. Do all liquid cleaning at a centralized station so the solvents and residues stay in one area. Locate drip pans, drain boards, and drying racks to direct drips back into a solvent sink or fluid holding tank for reuse. January 2003 California Stormwater BMP Handbook 5 of 7 Industrial and Commercial www.cabmphandbooks.com SC-22 Vehicle and Equipment Repair Reducing the number of solvents makes recycling easier and reduces hazardous waste management costs. Often, one solvent can perform a job as well as two different solvents. • Clean parts without using liquid cleaners whenever possible to reduce waste. • Prevent spills and drips of solvents and cleansers to the shop floor. • Do all liquid cleaning at a centralized station so the solvents and residues stay in one area. • Locate drip pans, drain boards, and drying racks to direct drips back into a solvent sink or fluid holding tank for reuse. Recycling Separating wastes allows for easier recycling and may reduce treatment costs. Keep hazardous and non-hazardous wastes separate, do not mix used oil and solvents, and keep chlorinated solvents (e.g., 1,1,1-trichloroethane) separate from non-chlorinated solvents (e.g., kerosene and mineral spirits). Many products made of recycled (i.e., refined or purified) materials are available. Engine oil, transmission fluid, antifreeze, and hydraulic fluid are available in recycled form. Buying recycled products supports the market for recycled materials. • Recycling is always preferable to disposal of unwanted materials. • Separate wastes for easier recycling. Keep hazardous and non-hazardous wastes separate, do not mix used oil and solvents, and keep chlorinated solvents separate from non- chlorinated solvents. • Label and track the recycling of waste material (e.g., used oil, spent solvents, batteries). • Purchase recycled products to support the market for recycled materials. Vehicle-Trailer Lubrication Fifth-wheel bearings on trucks require routine lubrication. Typically chassis grease is applied to the fifth-wheel bearing at rates that result in grease dripping off ofthe bearing into the en\aronment. To address this concern the following options are available: • Use adhesive lubricant. Follow manufacturer's label regarding the use of adhesive lubricant for truck fifth-wheels. Typically this means applying no more than 6 oz. of grease. No visible extrusion of lubricant from the fifth-wheel bearing when truck and trailer are connected should be present. • Use plastic plates oil on fifth-wheels with plastic inserts. • Use on-board truck or on-board trailer lubrication system. If these systems apply lube thinner than National Grease Lubrication Institute #2, equipment for collection of used lubricant is needed to prevent excess lubricant from dripping off the truck. 6 of 7 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Vehicle and Equipment Repair SC-22 Safer Alternatives If possible, eliminate or reduce the amount of hazardous materials and waste by substituting non-hazardous or less hazardous material: • Use non-caustic detergents instead of caustic cleaning for parts cleaning. • Use detergent-based or water-based cleaning systems in place of organic solvent degreasers. Wash water may require treatment before it can be discharged to the sewer. • Replace chlorinated organic solvents with non-chlorinated solvents. Non-chlorinated solvents like kerosene or mineral spirits are less toxic and less expensive to dispose of properly. Check list of active ingredients to see whether it contains chlorinated solvents. • Choose cleaning agents that can be recycled. Examples • Pick N Pull Auto Dismantlers in Rancho Cordova drains all fluids from automobiles before they enter the yard. • Ecology Auto Wrecking in Rialto is surrounded by a steel plate/concrete fence and has a completely paved lot that is graded to a central low point. Collected stormwater is channeled through an imdergroimd drainage system of clarifiers and then stored in a 60,000 gallon UST before being processed through a filter system. In addition, the work area is covered, ventilated and has an additional sump. Vehicle fluids are drained in this area and segregated for recycling. • All Auto Parts, Fontana, has a complete water recycling system in a 10,000 square foot concrete slab surrounded by a curb that contains all the runoff and sends it to the recycling system. All receiving, dismantling, and shipping occur on the slab. References and Resources California's Nonpoint Source Program Plan http://www.svyrcb.ca.gov/nps/index.html King County Storm Water Pollution Control Manual httD://dnr.metrokc.gnv/wlr/dss/spcm.htm Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.scvurppp.org The Storm Water Managers Resource Center http://www.stormwatercenter.net/E January 2003 California Stormwater BMP Handbook 7 of 7 Industrial and Commercial www.cabmphandbooks.com Waste Handling & Disposal SC-34 Objectives Cover Contain Educate Reduce/Minimize Product Substitution Description Improper storage and handling of solid wastes can allow toxic coinpounds, oils and greases, heavy metals, nutrients, suspended solids, and other pollutants to enter stormwater runoff. The discharge of pollutants to stormwater from waste handling and disposal can be prevented and reduced by tracking waste generation, storage, and disposal; reducing waste generation and disposal through source reduction, reuse, and recycling; and preventing run-on and runoff. Approach Pollution Prevention • Accomplish reduction in the amount of waste generated using the following source controls: - Production planning and sequencing - Process or equipment modification - Raw material substitution or elimination - Loss prevention and housekeeping - Waste segregation and separation - Close loop recycling • Establish a material tracking system to increase awareness about material usage. This may reduce spills and minimize contamination, thus reducing the amount of waste produced. • Recycle materials whenever possible. Targeted Constituents Sediment Nutrients Trash Metals • Bacteria y Oil and Grease y Organics • C ASQ A California Stormwater Quaiity Association January 2003 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com 1 of 5 SC-34 Waste Handling & Disposal Suggested Protocols General • Cover storage containers with leak proof lids or some other means. If waste is not in containers, cover all waste piles (plastic tarps are acceptable coverage) and prevent stormwater run-on and runoff with a berm. The waste containers or piles must be covered except when in use. • Use drip pans or absorbent materials whenever grease containers are emptied by vacuum trucks or other means. Grease cannot be left on the ground. Collected grease must be properly disposed of as garbage. • Check storage containers weekly for leaks and to ensure that lids are on tightly. Replace any that are leaking, corroded, or otherwise deteriorating. • Sweep and clean the storage area regularly. If it is paved, do not hose down the area to a storm drain. • Dispose of rinse and wash water from cleaning waste containers into a sanitary sewer if allowed by the local sewer authority. Do not discharge wash water to the street or storm drain. • Transfer waste from damaged containers into safe containers. • Take special care when loading or unloading wastes to minimize losses. Loading systems can be used to minimize spills and fugitive emission losses such as dust or mist. Vacuum transfer systems can minimize waste loss. Controlling Litter • Post "No Littering" signs and enforce anti-litter laws. • Provide a sufficient number of litter receptacles for the facility. • Clean out and cover litter receptacles frequently to prevent spillage. Waste Collection • Keep waste collection areas clean. • Inspect solid waste containers for structural damage regularly. Repair or replace damaged containers as necessary. • Secure solid waste containers; containers must be closed tightly when not in use. • Do not fill waste containers with washout water or any other liquid. • Ensure that only appropriate solid wastes are added to the solid waste container. Certain wastes such as hazardous wastes, appliances, fluorescent lamps, pesticides, etc., may not be disposed of in solid waste containers (see chemical/ hazardous waste collection section below). 2 of 5 California Stormwater BMP Handbook January 2003 Industrial and Commerciai www.cabmphandbooks.com Waste Handling & Disposal SC-34 • Do not mix wastes; this can cause chemical reactions, make recycling impossible, and complicate disposal. Good Housekeeping • Use all of the product before disposing of the container. • Keep the waste management area clean at all times by sweeping and cleaning up spills immediately. • Use dry methods when possible (e.g., sweeping, use of absorbents) when cleaning around restaurant/food handling dumpster areas. If water must be used after sweeping/using absorbents, collect water and discharge through grease interceptor to the sewer. Chemical/Hazardous Wastes • Select designated hazardous waste collection areas on-site. • Store hazardous materials and wastes in covered containers and protect them from vandalism. • Place hazardous waste containers in secondary containment. • Make sure that hazardous waste is collected, removed, and disposed of only at authorized disposal areas. • Stencil or demarcate storm drains on the facility's property with prohibitive message regarding waste disposal. Run-on/Runqff Prevention • Prevent stormwater run-on from entering the waste management area by enclosing the area or building a berm around the area. • Prevent waste materials from directly contacting rain. • Cover waste piles with temporary covering material such as reinforced tarpaulin, polyethylene, polyurethane, pol5^ropyleneor hypalon. • Cover the area with a permanent roof if feasible. • Cover dumpsters to prevent rain from washing waste out of holes or cracks in the bottom of the dumpster. • Move the activity indoor after ensuring all safety concerns such as fire hazard and ventilation are addressed. /nspection • Inspect and replace faulty pumps or hoses regularly to minimize the potential of releases and spills. • Check waste management areas for leaking containers or spills. January 2003 California Stormwater BMP Handbook 3 of 5 Industrial and Commercial www.cabmphandbooks.com SC-34 Waste Handling & Disposal • Repair leaking equipment including valves, lines, seals, or pumps promptly. TVaining • Train staff in pollution prevention measures and proper disposal methods. • Train employees and contractors in proper spill containment and cleanup. The employee should have the tools and knowledge to immediately begin cleaning up a spill should one occur. • Train employees and subcontractors in proper hazardous waste management. SpiZZ Response and Prevention • Keep your Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date. • Have an emergency plan, equipment and trained personnel ready at all times to deal immediately with major spills • Collect all spilled liquids and properly dispose of them. • Store and maintain appropriate spill cleanup materials in a location known to all near the designated wash area. • Ensure that vehicles transporting waste have spill prevention equipment that can prevent spills during transport. Spill prevention equipment includes: - Vehicles equipped with baffles for liquid waste Trucks with sealed gates and spill guards for solid waste Other Considerations (Limitations and Regulations) Hazardous waste cannot be reused or recycled; it must be disposed of by a licensed hazardous waste hauler. Requirements Costs Capital and O&M costs for these programs will vary substantially depending on the size of the facility and the types of waste handled. Costs should be low if there is an inventory program in place. Maintenance • None except for maintaining equipment for material tracking program. Supplemental Information Further Detail ofthe BMP Land Treatment System Minimize runoff of polluted stormwater from land application by: • Choosing a site where slopes are under 6%, the soil is permeable, there is a low water table, it is located away from wetlands or marshes, and there is a closed drainage system 4 of 5 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Waste Handling & Disposal • S wafe?^^"'^*'""" ""^""^"'^ *° S^""'^^ is saturated • [^^n's::^?^^^^ - Using erosion control techriiques such as mulching and matting, filter fences, straw bales diversion terracing, and sediment basins c*, Mraw oaies, • Trfworiing'''"*'"' to ensure the erosion control or site stabilization measures Examples The port of Long Beach has a state-of-the-art database for identifying potential pollutant sources, documenting facility management practices, and tracking pollutants References and Resources California's Nonpoint Source Program Plan httD://www ..wr.K ca.gov/np../inH.v h^^i Clark County Storm Water Pollution Control Manual http://www.co.clark.wa iis/piihworks/bmpman prlf Solid Waste Coritainer Best Management Practices - Fact Sheet On-Line Resources - Environmental Health and Safety. Harvard University. 2002. King County Storm Water Pollution Control Manual httD://dnr.niPtrnl.. pov/wlr/d../.p.^ 1,.^ Santa Clara Valley Urban Runoff Pollution Prevention Program httD://www ...vi.rppp The Storm Water Managers Resource Center httD://www..^tnrmwaterrPntPr n.t/ Safer Alternative Products SC-35 Description Promote the use of less harmful products and products that contain little or no TMDL pollutants. Altematives exist for most product classes including chemical fertilizers, pesticides, cleaning solutions, janitorial chemicals, automotive and paint products, and consumables (batteries, fluorescent lamps). Approach Pattern a new program after the many established programs around the state and country. Integrate this best management practice as much as possible with existing programs at your facility. Develop a comprehensive program based on: • The "Precautionary Principle," which is an alternative to the "Risk Assessment" model that says it's acceptable to use a potentially harmful product until physical evidence of its harmful effects are established and deemed too costly from an environmental or public health perspective. For instance, a risk assessment approach might say it's acceptable to use a pesticide until there is direct proof of an environmental impact. The Precautionary Principle approach is used to evaluate whether a given product is safe, whether it is really necessary, and whether altemative products would perform just as well. • Environmentally Preferable Purchasing Program to minimize the purchase of products containing hazardous ingredients used in the facility's custodial services, fleet maintenance, and facility maintenance in favor of using alternate products that pose less risk to employees and to the environment. • Integrated Pest Management (IPM) or Less-Toxic Pesticide Program, which uses a pest management approach that minimizes the use of toxic chemicals and gets rid of pests by methods that pose a lower risk to employees, the public, and the environment. • Energy Efficiency Program including no-cost and low-cost energy conservation and efficiency actions that can reduce both energy consumption and electricity bills, along with long-term energy efficiency investments. Consider the following mechanisms for developing and implementing a comprehensive program: • PoHcies Objectives Educate Reduce/Minimize Product Substitution Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics • • • • CASQA California Stormwater Quality Association January 2003 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com 1 of 5 SC-35 Safer Alternative Products • Procedures - Standard operating procedures (SOPs) - Purchasing guidelines and procedures - Bid packages (services and supplies) • Materials - Preferred or approved product and supplier lists - Product and supplier evaluation criteria - Training sessions and manuals Fact sheets for employees Implement this BMP in conjunction with the Vehicle and Equipment Management fact sheets (SC20 - SC22) and SC41, Building and Grounds Maintenance. TVaining • Employees who handle potentially harmful materials in the use of safer alternatives. • Purchasing departments should be encouraged to procure less hazardous materials and products that contain little or no harmfiil substances or TMDL pollutants. /{eguZations This BMP has no regulatory requirements. Existing regulations already encourage facilities to reduce the use of hazardous materials through incentives such as reduced: • Specialized equipment storage and handling requirements, • Storm water mnoff sampling requirements, • Training and licensing requirements, and • Record keeping and reporting requirements. Eguipment • There are no major equipment requirements to this BMP. Limitations • Alternative products may not be available, suitable, or effective in every case. Requirements Cost Considerations • The primary cost is for staff time to: 1) develop new policies and procedures and 2) educate purchasing departments and employees who handle potentially harmful materials about the availability, procurement, and use of safer alternatives. 2 of 5 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Safer Alternative Products SC-35 • Some alternative products may be slightly more expensive than conventional products. Supplemental Information Employees and contractors / service providers can both be educated about safer alternatives by using information developed by a number of organizations including the references and resources listed below. The following discussion provides some general information on safer alternatives. More specific information on particular hazardous materials and the available altematives may be found in the references and resources listed below. • Automotive products - Less toxic alternatives are not available for many automotive products, especially engine fluids. But there are alternatives to grease lubricants, car polishes, degreasers, and windshield washer solution. Rerefined motor oil is also available. • Vehicle/Trailer lubrication - Fifth wheel bearings on trucks require routine lubrication. Adhesive lubricants are available to replace typical chassis grease. • Cleaners - Vegetables-based or citms-based soaps are available to replace petroleum-based soaps/detergents. • Paint products - Water-based paints, wood preservatives, stains, and finishes are available. • Pesticides - Specific alternative products or methods exist to control most insects, fungi, and weeds. • Chemical Fertilizers - Compost and soil amendments are natural altematives. • Consumables - Manufacturers have either reduced or are in the process of reducing the amount of heavy metals in consumables such as batteries and fluorescent lamps. All fluorescent lamps contain mercury, however low-mercury containing lamps are now available from most hardware and lighting stores. Fluorescent lamps are also more energy efficient than the average incandescent lamp. • Janitorial chemicals - Even biodegradable soap can harm fish and wildlife before it biodegrades. Biodegradable does not mean non-toxic. Safer products and procedures are available for floor stripping and cleaning, as well as carpet, glass, metal, and restroom cleaning and disinfecting. J^ArampZes There are a number of business and trade associations, and communities with effective programs. Some ofthe more prominent are listed below in the references and resources section. References and Resources Note: Many ofthese references provide alternative products for materials that typically are used inside and disposed to the sanitary sewer as well as alternatives to products that usually end up in the storm drain. January 2003 California Stormwater BMP Handbook 3 of 5 Industrial and Commercial www.cabmphandbooks.com SC-35 Safer Alternative Products General Sustainable Practices and Pollution Prevention Including Pollutant- Specific Irtformation California Department of Toxic Substances Control (www.dtsc.ca.gov) California Integrated Waste Management Board (www.ciwmb.ca.gov) City of Santa Monica (www.santa-monica.org/environment) City of Palo Alto (www.city.palo-alto.ca.us/cleanbay) City and County of San Francisco, Department ofthe Environment (www.ci.sfca.iis/sfenvironment) Earth 911 (www.earth911.org/master.asp) Environmental Finance Center Region IX (vww.greenstart.0rg/efc9) Flex Your Power (www.flexyourpower.ca.gov) GreenBiz.com (www.greenbiz.com) Green Business Program (www.abag.org/bayarea/enviro/gbus/gb.html) Pacific Industrial and Business Association (www.piba.org) Sacramento Clean Water Business Partners (www.sacstormwater.org) USEPA BMP fact sheet - Alternative products (http://cfpub.epa.gov/npdes/stormwater/menuofbmps/poll_2.cftn) USEPA Region IX Pollution Prevention Program (www.epa.gov/regiono9/p2) Westem Regional Pollution Prevention Network (www.westp2net.0rg) Metals (mercury, copper) National Electrical Manufacturers Association - Environment, Health and Safety (www.nema.org) Sustainable Conservation (www.suscon.org) Auto Recycling Project Brake Pad Partnership Pesticides and Chemical Fertilizers Bio-Integral Resource Center (www.birc.org) California Department of Pesticide Regulation (www.cdpr.ca.gov) University of California Statewide IPM Program (www.ipm.ucdavis.edu/defauh.html) California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Safer Alternative Products Dioarfns Bay Area Dioxins Project (http://dioxin.abag.ca.gov/) Building & Grounds Maintenance SC-41 Objectives Cover Contain Educate Reduce/Minimize Product Substitution Targeted Constituents Description Stormwater mnoff from building and grounds maintenance activities can be contaminated with toxic hydrocarbons in solvents, fertilizers and pesticides, suspended solids, heavy metals, abnormal pH, and oils and greases. Utilizing the protocols in this fact sheet vrill prevent or reduce the discharge of pollutants to stormwater from building and grounds maintenance activities by washing and cleaning up with as little water as possible, following good landscape management practices, preventing and cleaning up spills immediately, keeping debris from entering the storm drains, and maintaining the stormwater collection system. Approach Reduce potential for pollutant discharge through source control pollution prevention and BMP implementation. Successfiil implementation depends on effective training of employees on applicable BMPs and general pollution prevention strategies and objectives. Pollution Prevention • Switch to non-toxic chemicals for maintenance when possible. • Choose cleaning agents that can be recycled. • Encourage proper lawn management and landscaping, including use of native vegetation. Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics • • • • Ac ASQA California Stormwater Quality Association January 2003 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com 1 of 5 SC-41 Building & Grounds Maintenance • Encourage use of Integrated Pest Management techniques for pest control. • Encourage proper onsite recycling of yard trimmings. • Recycle residual paints, solvents, lumber, and other material as much as possible. Suggested Protocols Pressure Washing of Buildings, Rooftops, and Other Large Objects • In situations where soaps or detergents are used and the surrounding area is paved, pressure washers must use a water collection device that enables collection of wash water and associated soHds. A sump pump, wet vacuum or similarly effective device must be used to collect the runoff and loose materials. The collected runoff and solids must be disposed of properly. • If soaps or detergents are not used, and the surrounding area is paved, wash runoff does not have to be collected but must be screened. Pressure washers must use filter fabric or some other type of screen on the ground and/or in the catch basin to trap the particles in wash water mnoff. • If you are pressure washing on a grassed area (with or without soap), mnoff must be dispersed as sheet flow as much as possible, rather than as a concentrated stream. The wash mnoff must remain on the grass and not drain to pavement. Landscaping Activities • Dispose of grass clippings, leaves, sticks, or other collected vegetation as garbage, or by composting. Do not dispose of collected vegetation into waterways or storm drainage systems. • Use mulch or other erosion control measures on exposed soils. Building Repair, Remodeling, and Construction • Do not dump any toxic substance or liquid waste on the pavement, the ground, or toward a storm drain. • Use ground or drop cloths underneath outdoor painting, scraping, and sandblasting work, and properly dispose of collected material daily. • Use a ground cloth or oversized tub for activities such as paint mixing and tool cleaning. • Clean paintbrushes and tools covered with water-based paints in sinks connected to sanitary sewers or in portable containers that can be dumped into a sanitary sewer drain. Brushes and tools covered with non-water-based paints, finishes, or other materials must be cleaned in a manner that enables collection of used solvents (e.g., paint thinner, turpentine, etc.) for recycling or proper disposal. • Use a storm drain cover, filter fabric, or similarly effective mnoff control mechanism if dust, grit, wash water, or other pollutants may escape the work area and enter a catch basin. This is particularly necessary on rainy days. The containment device(s) must be in place at the beginning of the work day, and accumulated dirty mnoff and solids must be collected and disposed of before removing the containment device(s) at the end of the work day. 2 of 5 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Building & Grounds Maintenance SC-41 • If you need to de-water an excavation site, you may need to filter the water before discharging to a catch basin or off-site. If directed off-site, you should direct the water through hay bales and filter fabric or use other sediment filters or traps. • Store toxic material under cover during precipitation events and when not in use. A cover would include tarps or other temporary cover material. Mowing, Trimming, and Planting • Dispose of leaves, sticks, or other collected vegetation as garbage, by composting or at a permitted landfill. Do not dispose of collected vegetation into waterways or storm drainage systems. • Use mulch or other erosion control measures when soils are exposed. • Place temporarily stockpiled material away from watercourses and drain inlets, and berm or cover stockpiles to prevent material releases to the storm drain system. • Consider an altemative approach when bailing out muddy water: do not put it in the storm drain; pour over landscaped areas. • Use hand weeding where practical. Fertilizer and Pesticide Management • Follow all federal, state, and local laws and regulations governing the use, storage, and disposal of fertilizers and pesticides and training of applicators and pest control advisors. • Use less toxic pesticides that will do the job when applicable. Avoid use of copper-based pesticides if possible. • Do not use pesticides if rain is expected. • Do not mix or prepare pesticides for application near storm drains. • Use the minimum amount needed for the job. • Calibrate fertilizer distributors to avoid excessive application. • Employ techniques to minimize off-target application (e.g., spray drift) of pesticides, including consideration of altemative application techniques. • Apply pesticides only when wind speeds are low. • Fertilizers should be worked into the soil rather than dumped or broadcast onto the surface. • Irrigate slowly to prevent mnoff and then only as much as is needed. • Clean pavement and sidewalk if fertilizer is spilled on these surfaces before applying irrigation water. • Dispose of empty pesticide containers according to the instmctions on the container label. January 2003 California Stormwater BMP Handbook 3 of 5 Industrial and Commercial www.cabmphandbooks.com SC-41 Building & Grounds Maintenance • Use up the pesticides. Rinse containers, and use rinse water as product. Dispose of unused pesticide as hazardous waste. • Implement storage requirements for pesticide products with guidance from the local fire department and County Agricultural Commissioner. Provide secondary containment for pesticides. Inspection • Inspect irrigation system periodically to ensure that the right amount of water is being applied and that excessive mnoff is not occurring. Minimize excess watering and repair leaks in the irrigation system as soon as they are observed. TVaining • Educate and train employees on pesticide use and in pesticide application techniques to prevent pollution. • Train employees and contractors in proper techniques for spill containment and cleanup. • Be sure the frequency of training takes into accoimt the complexity of the operations and the nature of the staff. SpiZZ Response and Prevention • Keep your Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date. • Place a stockpile of spill cleanup materials, such as brooms, dustpans, and vacuum sweepers (if desired) near the storage area where it will be readily accessible. • Have employees trained in spill containment and cleanup present during the loading/unloading of dangerous wastes, liquid chemicals, or other materials. • Familiarize employees with the Spill Prevention Control and Countermeasure Plan. • Clean up spills immediately. Other Considerations Alternative pest/weed controls may not be available, suitable, or effective in many cases. Requirements Costs • Cost will vary depending on the type and size of facility. • Overall costs should be low in comparison to other BMPs. Maintenance Sweep paved areas regularly to collect loose particles. Wipe up spills with rags and other absorbent material immediately, do not hose down the area to a storm drain. 4 of 5 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Building & Grounds Maintenance SC-41 Supplemental Information Further Detail ofthe BMP Fire Sprinkler Line Flushing Building fire sprinkler line flushing may be a source of non-stormwater mnoff pollution The water entering the system is usually potable water, though in some areas it may be non-potable reclaimed wastewater. There are subsequent factors that may drastically reduce the quality of the water m such systems. Black iron pipe is usually used since it is cheaper than potable piping, but it is subject to rusting and results in lower quality water. Initially, the black iron pipe has an oil coating to protect it from rusting between manufacture and installation; this will contaminate the water from the first flush but not from subsequent flushes. Nitrates, poly- phosphates and other corrosion inhibitors, as well as fire suppressants and antifreeze may be added to the sprinkler water system. Water generally remains in the sprinkler system a long time (typically a year) and between flushes may accumulate iron, manganese, lead, copper nickel and zinc. The water generally becomes anoxic and contains living and dead bacteria and breakdown products from chlorination. This may result in a significant BOD problem and the water often smells. Consequently dispose fire sprinkler line flush water into the sanitary sewer Do not al ow discharge to storm drain or infiltration due to potential high levels of pollutants in hre sprinkler line water. References and Resources California's Nonpoint Source Program Plan httD://www..swrch.ca.gnv/nDs/indey.htm1 Clark County Storm Water Pollution Control Manual http://www.co.clark.wa.us/puhworks/bmpman.pdf King County Storm Water Pollution Control Manual htto://dnr.metrokc.gov/wlr/dss/.spcm.htni Mobile Cleaners Pilot Program: Final Report. 1997. Bay Area Stormwater Management Agencies Association (BASMAA). httD://www.basmaa.org/ Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwater Management Agencies Association (BASMAA). http://www.basmaa.org/ Santa Clara Valley Urban Runoff Pollution Prevention Program htto: //www scvurppp nrg The Storm Water Managers Resource Center htto://www..stormwatercentPr nPt/ January 2003 California Stormwater BMP Handbook 5 of 5 Industrial and Commercial www.cabmphandbooks.com Building Repair and Construction SC-42 Description Modifications are common particularly at large industrial sites. The activity may vary from minor and normal building repair to major remodeling, or the constmction of new facilities. These activities can generate pollutants including solvents, paints, paint and varnish removers, finishing residues, spent thinners, soap cleaners, kerosene, asphalt and concrete materials, adhesive residues, and old asbestos installation. Protocols in this fact sheet are intended to prevent or reduce the discharge of pollutants to stormwater from building repair, remodeling, and constmction by using soil erosion controls, enclosing or covering building material storage areas, using good housekeeping practices, using safer alternative products, and training employees. Approach Pollution Prevention • Recycle residual paints, solvents, lumber, and other materials to the maximum extent practical. • Buy recycled products to the maximum extent practical. • Inform on-site contractors of company policy on these matters and include appropriate provisions in their contract to ensure certain proper housekeeping and disposal practices are implemented. Objectives Cover Contain Educate Reduce/Minimize Recycle Targeted Constituents Sediment y Nutrients Trash y Metals y Bacteria Oil and Grease y Organics y CASQA California Stormwater Quaiity Association January 2003 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com 1 of 4 SC-42 Building Repair and Construction • Make sure that nearby storm drains are well marked to minimize the chance of inadvertent disposal of residual paints and other liquids. Suggested Protocols Repair & Remodeling • Follow BMPs identified in Constmction BMP Handbook. • Maintain good housekeeping practices while work is underway. • Keep the work site clean and orderly. Remove debris in a timely fashion. Sweep the area. • Cover materials of particular concern that must be left outside, particularly during the rainy season. • Do not dump waste liquids down the storm drain. • Dispose of wash water, sweepings, and sediments properly. • Store materials properly that are normally used in repair and remodeling such as paints and solvents. • Sweep out the gutter or wash the gutter and trap the particles at the outiet of the downspout if when repairing roofs, small particles have accumulated in the gutter. A sock or geofabric placed over the outiet may effectively trap the materials. If the downspout is tight lined, place a temporary plug at the first convenient point in the storm drain and pump out the water with a vactor tmck, and clean the catch basin sump where you placed the plug. • Properly store and dispose waste materials generated from constmction activities. See Constmction BMP Handbook. • Clean the storm drain system in the immediate vicinity of the constmction activity after it is completed. Painting • Enclose painting operations consistent with local air quality regulations and OSHA. • Local air pollution regulations may, in many areas of the state, specify painting procedures which if properly carried out are usually sufficient to protect water quality. • Develop paint handling procedures for proper use, storage, and disposal of paints. • Transport paint and materials to and from job sites in containers with secure lids and tied down to the transport vehicle. • Test and inspect spray equipment prior to starting to paint. Tighten all hoses and connections and do not overfill paint containers. • Mix paint indoors before using so that any spill will not be exposed to rain. Do so even during dry weather because cleanup of a spill will never be 100% effective. • Transfer and load paint and hot thermoplastic away from storm drain inlets. 2 of 4 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Building Repair and Construction SC-42 • Do not transfer or load paint near storm drain inlets. • Plug nearby storm drain inlets prior to starting painting and remove plugs when job is complete when there is significant risk of a spill reaching storm drains. • Cover nearby storm drain inlets prior to starting work if sand blasting is used to remove paint. • Use a ground cloth to collect the chips if painting requires scraping or sand blasting of the existing surface. Dispose the residue properly. • Cover or enclose painting operations properly to avoid drift. • Clean the application equipment in a sink that is connected to the sanitary sewer if using water based paints. • Capture all cleanup-water and dispose of properly. • Dispose of paints containing lead or tributyl tin and considered a hazardous waste properly. • Store leftover paints if they are to be kept for the next job properly, or dispose properly. • Recycle paint when possible. Dispose of paint at an appropriate household hazardous waste facility. TVaining Proper education of off-site contractors is often overlooked. The conscientious efforts of well trained employees can be lost by unknowing off-site contractors, so make sure they are well informed about what they are expected to do. SpiZZ /Response and Prevention • Keep your Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date. • Place a stockpile of spill cleanup materials where it will be readily accessible. • Clean up spills immediately. • Excavate and remove the contaminated (stained) soil if a spill occurs on dirt. LimitatioTts • This BMP is for minor constmction only. The State's General Constmction Activity Stormwater Permit has more requirements for larger projects. The companion "Constmction Best Management Practice Handbook" contains specific guidance and best management practices for larger-scale projects. • Hazardous waste that cannot be reused or recycled must be disposed of by a licensed hazardous waste hauler. • Be certain that actions to help stormwater quality are consistent vrith Cal- and Fed-OSHA and air quality regulations. January 2003 California Stormwater BMP Handbook 3 of 4 Industrial and Commercial www.cabmphandbooks.com SC-42 Building Repair and Construction Requirements Costs These BMPs are generally low to modest in cost. Maintenance N/A Supplemental Information Further Detail ofthe BMP Soil/Erosion Control Ifthe work involves exposing large areas of soil, employ the appropriate soil erosion and control techniques. See the Constmction Best Management Practice Handbook. If old buildings are being torn down and not replaced in the near future, stabilize the site using measures described in SC-40 Contaminated or Erodible Areas. If a building is to be placed over an open area with a storm drainage system, make sure the storm inlets within the building are covered or removed, or the storm Hne is connected to the sanitary sewer. If because of the remodeling a new drainage system is to be installed or the existing system is to be modified, consider installing catch basins as they serve as effective "in- line" treatment devices. See Treatment Control Fact Sheet TC-20 Wet Pond/Basin in Section 5 ofthe New Development and Redevelopment Handbook regarding design criteria. Include in the catch basin a "turn-down" elbow or similar device to trap floatables. References and Resources California's Nonpoint Source Program Plan http://www.swrcb.ca.gov/nps/index.html Clark County Storm Water Pollution Control Manual http://www.co.clark.wa.us/pubworks/bmpman.pdf King County Storm Water Pollution Control Manual http://dnr.metrokc.gov/wlr/dss/spcm.htm Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.scvurppp.org The Storm Water Managers Resource Center http://www.stormwatercenter.net/ 4 of 4 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Parl<ing/Storage Area i^aintenanr«» sc-43 Description Parking lots and storage areas can contribute a number of substances, such as trash, suspended solids, hydrocarbons, oil and grease, and heavy metals that can enter receiving waters through stormwater mnoff or non-stormwater discharges The protocols m this fact sheet are intended to prevent or reduce the discharge of pollutants from parking/storage areas and include using good housekeeping practices, following appropriate cleaning BMPs, and training employees. Approach The goal ofthis program is to ensure stormwater pollution prevention practices are considered when conducting activities on or around parking areas and storage areas to reduce potential for pollutant discharge to receiving waters. Successfiil implementation depends on effective training of employees on obfeSr ^""^ ^^"^'^^ pollution prevention strategies and Pollution Prevention • Encourage alternative designs and maintenance strategies for impervious parking lots. (See New Development and Redevelopment BMP Handbook) • Keep accurate maintenance logs to evaluate BMP implementation. Targeted Constituents Sediment y Nutrients Trash y Metals y Bacteria Oil and Grease y Organics y California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com CASQA California Stormwater Quality Association 1 of 4 SC-43 Parking/Storage Area Maintenance Suggested Protocols General • Keep the parking and storage areas clean and orderly. Remove debris in a timely fashion. • Allow sheet mnoff to flow into biofilters (vegetated strip and swale) and/or infiltration devices. • Utilize sand filters or oleophilic collectors for oily waste in low quantities. • Arrange rooftop drains to prevent drainage directly onto paved surfaces. • Design lot to include semi-permeable hardscape. • Discharge soapy water remaining in mop or wash buckets to the sanitary sewer through a sink, toilet, clean-out, or wash area with drain. Controlling Litter • Post "No Littering" signs and enforce anti-litter laws. • Provide an adequate number of Htter receptacles. • Clean out and cover litter receptacles frequently to prevent spillage. • Provide trash receptacles in parking lots to discourage litter. • Routinely sweep, shovel, and dispose of litter in the trash. Surface Cleaning • Use dry cleaning methods (e.g., sweeping, vacuuming) to prevent the discharge of pollutants into the stormwater conveyance system if possible. • EstabHsh frequency of public parking lot sweeping based on usage and field observations of waste accumulation. • Sweep all parking lots at least once before the onset of the wet season. • Follow the procedures below if water is used to clean surfaces: Block the storm drain or contain mnoff. Collect and pump wash water to the sanitary sewer or discharge to a pervious surface. Do not allow wash water to enter storm drains. - Dispose of parking lot sweeping debris and dirt at a landfill. • Follow the procedures below when cleaning heavy oily deposits: - Clean oily spots with absorbent materials. - Use a screen or filter fabric over inlet, then wash surfaces. 2 of 4 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Parking/Storage Area Maintenance SC-43 Do not allow discharges to the storm drain. - Vacuum/pump discharges to a tank or discharge to sanitary sewer. - Appropriately dispose of spilled materials and absorbents. Surface Repair • Preheat, transfer or load hot bituminous material away from storm drain inlets. • Apply concrete, asphalt, and seal coat during dry weather to prevent contamination from contacting stormwater mnoff. • Cover and seal nearby storm drain inlets where applicable (with waterproof material or mesh) and manholes before applying seal coat, slurry seal, etc. Leave covers in place until job is complete and all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for proper disposal. • Use only as much water as necessary for dust control, to avoid mnoff. • Catch drips from paving equipment that is not in use with pans or absorbent material placed under the machines. Dispose of coUected material and absorbents properly. Inspection • Have designated personnel conduct inspections of parking facilities and stormwater conveyance systems associated with parking facilities on a regular basis. • Inspect cleaning equipment/sweepers for leaks on a regular basis. Training • Provide regular training to field employees and/or contractors regarding cleaning of paved areas and proper operation of equipment. • Train employees and contractors in proper techniques for spiU containment and cleanup. SpiZZ Response and Prevention • Keep your Spill Prevention Control and Countermeasure (SPCC) Plan up-to-date. • Place a stockpile of spill cleanup materials where it will be readily accessible or at a central location. • Clean up fluid spills immediately with absorbent rags or material. • Dispose of spilled material and absorbents properly. Other Considerations Limitations related to sweeping activities at large parking facilities may include high equipment costs, the need for sweeper operator training, and the inability of current sweeper technology to remove oil and grease. January 2003 California Stormwater BMP Handbook 3 of 4 Industrial and Commercial www.cabmphandbooks.com SC-43 Parking/Storage Area Maintenance Requirements Costs Cleaning/sweeping costs can be quite large. Constmction and maintenance of stormwater stmctural controls can be quite expensive as well. Maintenance • Sweep parking lot regularly to minimize cleaning with water. • Clean out oil/water/sand separators regularly, especially after heavy storms. • Clean parking facilities regularly to prevent accumulated wastes and pollutants from being discharged into conveyance systems during rainy conditions. Supplemental Information Further Detail ofthe BMP Surface Repair Apply concrete, asphalt, and seal coat during dry weather to prevent contamination from contacting stormwater mnoff. Where applicable, cover and seal nearby storm drain inlets (with waterproof material or mesh) and manholes before applying seal coat, slurry seal, etc. Leave covers in place until job is complete and all water from emulsified oil sealants has drained or evaporated. Clean any debris from these covered manholes and drains for proper disposal. Only use only as much water as is necessary for dust control to avoid runoff. References and Resources California's Nonpoint Source Program Plan httD://www.swrch.ca.gov/nps/indRY htTnI Clark County Storm Water PoHution Control Manual http://wvm.co.clark.wa.us/puhwnrks/hmpmanpdf King County Storm Water Pollution Control Manual httD://dnr.metrokc.gov/wlr/dss/.spnm htm Pollution from Surface Cleaning Folder. 1996. Bay Area Stormwater Management Agencies Association (BASMAA). http://www.basmaa.org/ Oregon Association of Clean Water Agencies. Oregon Municipal Stormwater Toolbox for Maintenance Practices. Jime 1998. Santa Clara Valley Urban Runoff Pollution Prevention Program http://www.scvurppp.nrg The Storm Water Managers Resource Center htto://www.stormwatercenter.net/ 4 of 4 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Drainage System Maintenance SC-44 f L _ / Objectives Cover Contain Educate Reduce/Minimize Description As a consequence of its fiinction, the stormwater conveyance system collects and transports urban mnoff and stormwater that may contain certain pollutants. The protocols in this fact sheet are intended to reduce pollutants reaching receiving waters through proper conveyance system operation and maintenance. Approach Pollution Prevention Maintain catch basins, stormwater inlets, and other stormwater conveyance stmctures on a regular basis to remove poHutants, reduce high pollutant concentrations during the first flush of storms, prevent clogging of the downstream conveyance system, restore catch basins' sediment trapping capacity, and ensure the system functions properly hydraulically to avoid flooding. Suggested Protocols Catch Basins/Inlet Structures • Staff should regularly inspect facilities to ensure compliance with the following: - Immediate repair of any deterioration threatening stmctural integrity. - Cleaning before the sump is 40% fiill. Catch basins should be cleaned as frequently as needed to meet this standard. - Stenciling of catch basins and inlets (see SC34 Waste Handling and Disposal). Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics • • • C ASQ A California Stormwater Quality Association January 2003 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com 1 of 6 SC-44 Drainage System Maintenance • clean catch basins, storm drain inlets, and other conveyance stmctures before the wet season to remove sediments and debris accumulated during the summer. • Conduct inspections more frequently during the wet season for problem areas where sediment or trash accumulates more often. Clean and repair as needed. • Keep accurate logs of the number of catch basins cleaned. • Store wastes collected from cleaning activities of the drainage system in appropriate containers or temporary storage sites in a manner that prevents discharge to the storm drain. • Dewater the wastes if necessary with oufflow into the sanitary sewer if permitted. Water should be treated with an appropriate filtering device prior to discharge to the sanitary sewer. If discharge to the sanitary sewer is not allowed, water should be pumped or vacuumed to a tank and properly disposed. Do not dewater near a storm drain or stream. Storm Drain Conveyance System • Locate reaches of storm drain with deposit problems and develop a flushing schedule that keeps the pipe clear of excessive buildup. • Collect and pump flushed effluent to the sanitary sewer for treatment whenever possible. Pump Stations • Clean all storm drain pump stations prior to the wet season to remove silt and trash. • Do not allow discharge to reach the storm drain system when cleaning a storm drain pump station or other facility. • Conduct routine maintenance at each pump station. • Inspect, clean, and repair as necessary all outlet stmctures prior to the wet season. Open Channel m Modify storm channel characteristics to improve channel hydraulics, increase pollutant removals, and enhance channel/creek aesthetic and habitat value. • Conduct channel modification/improvement in accordance with existing laws. Any person, government agency, or pubHc utility proposing an activity that will change the natural (emphasis added) state of any river, stream, or lake in California, must enter into a Steam or Lake Alteration Agreement with the Department of Fish and Game. The developer-applicant should also contact local govemments (city, county, special districts), other state agencies (SWRCB, RWQCB, Department of Forestry, Department of Water Resources), and Federal Corps of Engineers and USFWS. Illicit Connections and Discharges • Look for evidence of iUegal discharges or Ulicit connections during routine maintenance of conveyance system and drainage structures: Is there evidence of spiUs such as paints, discoloring, etc? 2 of 6 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Drainage System Maintenance SC-44 - Are there any odors associated with the drainage system? - Record locations of apparent illegal discharges/Ulicit connections? - Track flows back to potential dischargers and conduct aboveground inspections. This can be done through visual inspection of upgradient manholes or alternate techniques including zinc chloride smoke testing, fluorometric dye testing, physical inspection testing, or television camera inspection. - Eliminate the discharge once the origin of flow is established. • Stencil or demarcate storm drains, where applicable, to prevent illegal disposal of pollutants. Storm drain inlets should have messages such as "Dump No Waste Drains to Stream" stenciled next to them to wam against ignorant or intentional dumping of pollutants into the storm drainage system. • Refer to fact sheet SC-io Non-Stormwater Discharges. Illegal Dumping • Inspect and clean up hot spots and other storm drainage areas regularly where illegal dumping and disposal occurs. • Establish a system for tracking incidents. The system should be designed to identify the following: Illegal dumping hot spots - Types and quantities (in some cases) of wastes - Patterns in time of occurrence (time of day/night, month, or year) - Mode of dumping (abandoned containers, "midnight dumping" from moving vehicles, direct dumping of materials, accidents/spills) - Responsible parties • Post "No Dumping" signs in problem areas with a phone number for reporting dumping and disposal. Signs should also indicate fines and penalties for illegal dumping. • Refer to fact sheet SC-io Non-Stormwater Discharges. TVaining • Train crews in proper maintenance activities, including record keeping and disposal. • Allow only properly trained individuals to handle hazardous materials/wastes. • Have staff involved in detection and removal of iUicit connections trained in the following: - OSHA-required Health and Safety Training (29 CFR 1910.120) plus annual refresher training (as needed). January 2003 California Stormwater BMP Handbook 3 of 6 Industrial and Commercial www.cabmphandbooks.com SC-44 Drainage System Maintenance - OSHA Confined Space Entry training (Cal-OSHA Confined Space, Titie 8 and Federal OSHA 29 CFR 1910.146). - Procedural training (field screening, sampling, smoke/dye testing, TV inspection). SpiZZ /Response and Prevention • Investigate all reports of spills, leaks, and/or illegal dumping promptly. • Clean up all spiUs and leaks using "dry" methods (with absorbent materials and/or rags) or dig up, remove, and properly dispose of contaminated soil. • Refer to fact sheet SC-11 Spill Prevention, Control, and Cleanup. Other Considerations (Limitations and Regulations) • Clean-up activities may create a slight disturbance for local aquatic species. Access to items and material on private property may be Hmited. Trade-offs may exist between channel hydraulics and water quality/riparian habitat. If storm channels or basins are recognized as wetlands, many activities, including maintenance, maybe subject to regulation and permitting. • Storm drain flushing is most effective in smaU diameter pipes (36-inch diameter pipe or less, depending on water supply and sediment collection capacity). Other considerations associated with storm drain flushing may include the availability of a water source, finding a downstream area to collect sediments, liquid/sediment disposal, and prohibition against disposal of flushed effluent to sanitary sewer in some areas. • Regulations may include adoption of substantial penalties for illegal dumping and disposal. • Local municipal codes may include sections prohibiting discharge of soil, debris, refuse, hazardous wastes, and other pollutants into the storm drain system. Requirements Costs • An aggressive catch basin cleaning program could require a significant capital and O&M budget. • The elimination of illegal dumping is dependent on the availability, convenience, and cost of altemative means of disposal. The primary cost is for staff time. Cost depends on how aggressively a program is implemented. Other cost considerations for an illegal dumping program include: - Purchase and instaUation of signs. - Rental of vehicle(s) to haul illegally-disposed items and material to landfills. - Rental of heavy equipment to remove larger items (e.g., car bodies) from channels. - Purchase of landfill space to dispose of illegally-dumped items and material. 4 of 6 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Drainage System Maintenance SC-44 • Methods used for illicit connection detection (smoke testing, dye testing, visual inspection, and flow monitoring) can be costly and time-consuming. Site-specific factors, such as the level of impervious area, the density and ages of buildings, and type of land use will determine the level of investigation necessary. Maintenance • Two-person teams may be required to clean catch basins with vactor tmcks. • Teams of at least two people plus administrative personnel are required to identify illicit discharges, depending on the complexity of the storm sewer system. • Arrangements must be made for proper disposal of collected wastes. • Technical staff are required to detect and investigate illegal dumping violations. Supplemental Information Further Detail ofthe BMP Storm Drain Flushing Flushing is a common maintenance activity used to improve pipe hydraulics and to remove poUutants in storm drainage systems. Flushing may be designed to hydraulically convey accumulated material to strategic locations, such as an open channel, another point where flushing will be initiated, or the sanitary sewer and the treatment facilities, thus preventing resuspension and overflow of a portion of the solids during storm events. Flushing prevents "plug flow" discharges of concentrated pollutant loadings and sediments. Deposits can hinder the designed conveyance capacity of the storm drain system and potentially cause backwater conditions in severe cases of clogging. Storm drain flushing usually takes place along segments of pipe with grades that are too flat to maintain adequate velocity to keep particles in suspension. An upstream manhole is selected to place an inflatable device that temporarily plugs the pipe. Further upstream, water is pumped into the line to create a flushing wave. When the upstream reach of pipe is sufficiently fiiU to cause a flushing wave, the inflated device is rapidly deflated vrith the assistance of a vacuum pump, thereby releasing the backed up water and resulting in the cleaning ofthe storm drain segment. To further reduce impacts of stormwater pollution, a second inflatable device placed well downstream may be used to recollect the water after the force of the flushing wave has dissipated. A pump may then be used to transfer the water and accumulated material to the sanitary sewer for treatment. In some cases, an interceptor stmcture may be more practical or required to recollect the flushed waters. It has been found that cleansing efficiency of periodic flush waves is dependent upon flush volume, flush discharge rate, sewer slope, sewer length, sewer flow rate, sewer diameter, and population density. As a mle of thumb, the length of line to be flushed should not exceed 700 feet. At this maximum recommended length, the percent removal efficiency ranges between 65- 75% for organics and 55-65% for dry weather grit/inorganic material. The percent removal efficiency drops rapidly beyond that. Water is commonly supplied by a water tmck, but fire hydrants can also supply water. To make the best use of water, it is recommended that reclaimed water be used or that fire hydrant line flushing coincide with storm sewer flushing. January 2003 California Stormwater BMP Handbook 5 of 6 Industrial and Commercial www.cabmphandbooks.com SC-44 Drainage System Maintenance References and Resources California's Nonpoint Source Program Plan http://www.swrcb.ca.gov/nps/index.htm1 Clark County Storm Water Pollution Control Manual http://www.co.clark.wa.us/pubworks/bmpman.pdf Ferguson, B.K. 1991. Urban Stream Reclamation, p. 324-322, Journal of Soil and Water Conservation. King County Storm Water Pollution Control Manual http://dnr.metrokc.gov/wlr/dss/spcm.htin Oregon Association of Clean Water Agencies. Oregon Municipal Stormwater Toolbox for Maintenance Practices. June 1998. Santa Clara VaUey Urban Runoff Pollution Prevention Program http: //www.scvurppp.org The Storm Water Managers Resource Center http://www.stormwatercenter.net United States Environmental Protection Agency (USEPA). 2002. Pollution Prevention/Good Housekeeping for Municipal Operations Storm Drain System Cleaning. On line: http://www.epa.gov/npdes/menuofbmps/poll i6.htm &of6 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com storm Drain Signage SD-13 Design Objectives Maximize Infiltration Provide Retention Slow Runoff Minimize Impervious Land Coverage Prohibit Dumping of Improper Materials Contain Pollutants Collect and Convey 0 Description Waste materials dumped into storm drain inlets can have severe impacts on receiving and ground waters. Posting notices regarding discharge prohibitions at storm drain inlets can prevent waste dumping. Storm drain signs and stencils are highly visible source controls that are typicaUy placed directiy adjacent to storm drain inlets. Approach The stendl or afSxed sign contains a brief statement that prohibits dumping of improper materials into the urban runoff convqrance system. Storm drain messages have become a popular method of alerting the pubHc about tiie effects of and the prohibitions against waste disposal. Suitable Applications Stendls and signs alert the public to the destination of pollutants dischaiged to the storm drain. Signs are appropriate in residential, commerdal, and industrial areas, as weU as any other area where contributions or dumping to storm drains is likely. Design Considerations Storm drain message markers or placards are recommended at aU storm drain inlets within the boundaiy of a development project The marker should be placed in clear sight facing toward anyone approaching the inlet from either side. All storm drain inlet locations should be identified on the development site map. Designing New InstaUations The foUowing methods should be considered for inclusion in the project design and show on project plans: • Provide stenciUng or labeling of aU storm drain inlets and catch basins, constmcted or modified, within the project area with prohibitive language. Examples include "NO DUMPING ^.^V^t \ . (. KM January 2003 California Stormwater BMP Handbook New Development and Redevelopment www. cabmphandbooks. com 1 of 2 SD-13 Storm Drain Signage - DRAINS TO OCEAN" and/or otiier graphical icons to discourage iUegal dumping. • Post signs with prohibitive language and/or graphical icons, which prohibit iUegal dumping at pubHc access points along channels and creeks within the project area. Note - Some local agencies have approved spedfic signage and/or storm drain message placards for use. Consult local agency stormwater staff to determine specific requirements for placard types and raethods of apphcation. Redeveloping Existing Installations Various jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define "redevelopment" in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with stmctural or impervious surfaces. If the project meets the definition of "redevelopment", then the requirements stated under" designing new instaUations" above should be included in aU project design plans. Additional Information Mailt tenance Considerations • LegibiHty of markers and signs should be maintained. If required by the agency with jurisdiction over the project, the owner/operator or homeowner's association should enter into a maintenance agreement with the agency or record a deed restriction upon the property titie to maintain the legibUity of placards or signs. PZacement • Signage on top of curbs tends to weather and fade. • Signage on face of curbs tends to be wom by contact with vehicle tires and sweeper brooms. Supplemental Information Examples • Most MS4 programs have storm drain signage programs. Some MS4 programs will provide stencils, or arrange for volunteers to stendl storm drains as part of tiieir outreach program. Other Resources A Manual for tiie Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2002. Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2002. Model Water QuaHty Management Plan (WQMP) for Couniy of Orange, Orange Comity Flood Control Distiict, andthe Incorporated Cities of Orange Cbunty, Draft Febmaiy 2003. Ventura Countywide Technical Guidance Manual for Stormwater Quality Control Measures, July 2002. 2 of 2 California Stormwater BMP Handbook January 2003 New Development and Redevelopment www. cabmpfiandbooks. com Spill Prevention^ Control & Cleanup SC-11 Objectives Cover Contain Educate Reduce/Minimize Product Substitution Description Many activities that occur at an industrial or commercial site have the potential to cause accidental or illegal spiUs. Preparation for accidental or illegal spills, with proper training and reporting systems implemented, can minimize the discharge of pollutants to the environment. Spills and leaks are one of the largest contributors of stormwater pollutants. Spill prevention and control plans are applicable to any site at which hazardous materials are stored or used. An effective plan should have spill prevention and response procedures that identify potential spUl areas, specify material handling procedures, describe spill response procedures, and provide spiU clean-up equipment. The plan should take steps to identify and characterize potential spills, eliminate and reduce spiU potential, respond to spiUs when they occur in an effort to prevent pollutants from entering the stormwater drainage system, and train personnel to prevent and control future spiUs. Approach Pollution Prevention • Develop procedures to prevent/mitigate spills to storm drain systems. Develop and standardize reporting procedures, containment, storage, and disposal activities, documentation, and follow-up procedures. • Develop a SpiU Prevention Control and Countermeasure (SPCC) Plan. The plan should indude: Targeted Constituents Sediment Nutrients Trash Metals y Bacteria Oil and Grease y Organics y C ASQ A California Stormwater Quaiity Association January 2003 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com 1 of 9 SC-11 Spill Prevention^ Control & Cleanup - Description of the facility, owner and address, activities and chemicals present - Facility map Notification and evacuation procedures - Cleanup instmctions - Identification of responsible departments - Identify key spill response personnel • Recycle, reclaim, or reuse materials whenever possible. This will reduce the amount of process materials that are brought into the facility. Suggested Protocols (including equipment needs) Spill Prevention • Develop procedures to prevent/mitigate spiUs to storm drain systems. Develop and standardize reporting procedures, containment, storage, and disposal activities, documentation, and follow-up procedures. • If consistent iUegal dumping is observed at the facility: - Post "No Dumping" signs with a phone number for reporting illegal dumping and disposal. Signs should also indicate fines and penalties applicable for illegal dumping. - Landscaping and beautification efforts may also discourage illegal dumping. - Bright lighting and/or entrance barriers may also be needed to discourage illegal dumping. • Store and contain liquid materials in such a manner that if the tank is mptured, the contents will not discharge, flow, or be washed into the storm drainage system, surface waters, or groundwater. • If the liquid is oil, gas, or other material that separates from and floats on water, install a spill control device (such as a tee section) in the catch basins that collects mnoff from the storage tank area. • Routine maintenance: - Place drip pans or absorbent materials beneath all mounted taps, and at all potential drip and spill locations during fiUing and unloading of tanks. Any collected liquids or soiled absorbent materials must be reused/recycled or properly disposed. - Store and maintain appropriate spiU cleanup materials in a location known to all near the tank storage area; and ensure that employees are familiar with the site's spill control plan and/or proper spill cleanup procedures. - Sweep and clean the storage area monthly if it is paved, do not hose down the area to a storm drain. 2 of 9 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Spill Prevention^ Control & Cleanup SC-11 - Check tanks (and any containment sumps) daily for leaks and spUls. Replace tanks that are leaking, corroded, or otherwise deteriorating with tanks in good condition. Collect aU spilled liquids and properly dispose of them. • Label all containers according to their contents (e.g., solvent, gasoline). • Label hazardous substances regarding the potential hazard (corrosive, radioactive, flammable, explosive, poisonous). • Prominently display required labels on transported hazardous and toxic materials (per US DOT regulations). • Identify key spiU response personnel. Spi7/ Control and Cleanup Activities • Follow the Spill Prevention Control and Countermeasure Plan. • Clean up leaks and spills immediately. • Place a stockpile of spiU cleanup materials where it will be readily accessible (e.g., near storage and maintenance areas). • On paved surfaces, clean up spiUs with as little water as possible. Use a rag for small spills, a damp mop for general cleanup, and absorbent material for larger spills. If the spilled material is hazardous, then the used cleanup materials are also hazardous and must be sent to a certified laundry (rags) or disposed of as hazardous waste. Physical methods for the cleanup of dry chemicals include the use of brooms, shovels, sweepers, or plows. • Never hose down or bury dry material spUls. Sweep up the material and dispose of properly. • Chemical cleanups of material can be achieved with the use of adsorbents, gels, and foams. Use adsorbent materials on small spills rather than hosing down the spill. Remove the adsorbent materials promptly and dispose of properly. • For larger spills, a private spill cleanup company or Hazmat team may be necessary. Reporting m Report spills that pose an immediate threat to human health or the environment to the Regional Water Quality Control Board. • Federal regulations require that any oil spiU into a water body or onto an adjoining shoreline be reported to the National Response Center (NRC) at 800-424-8802 (24 hour). • Report spiUs to local agencies, such as the fire department; they can assist in cleanup. • Establish a system for tracking incidents. The system should be designed to identify the following: - Types and quantities (in some cases) of wastes - Patterns in time of occurrence (time of day/night, month, or year) January 2003 California Stormwater BMP Handbook 3 of 9 Industrial and Commercial www.cabmphandbooks.com SC-11 Spill Prevention^ Control & Cleanup - Mode of dumping (abandoned containers, "midnight dumping" from moving vehicles, direct dumping of materials, accidents/spills) - Responsible parties TVaining • Educate employees about spiU prevention and cleanup. • WeU-trained employees can reduce human errors that lead to accidental releases or spUls: - The employee should have the tools and knowledge to immediately begin cleaning up a spill should one occur. - Employees should be familiar with the SpiU Prevention Control and Countermeasure Plan. • Employees should be educated about aboveground storage tank requirements. Employees responsible for aboveground storage tanks and liquid transfers should be thoroughly familiar with the SpiU Prevention Control and Countermeasure Plan and the plan should be readily available. • Train employees to recognize and report illegal dumping incidents. Other Considerations (Limitations and Regulations) • State regulations exist for facilities with a storage capacity of 10,000 gaUons or more of petroleum to prepare a SpiU Prevention Control and Countermeasure (SPCC) Plan (Health & Safety Code Chapter 6.67). • State regulations also exist for storage of hazardous materials (Health & Safety Code Chapter 6.95). including the preparation of area and business plans for emergency response to the releases or threatened releases. • Consider requiring smaller secondary containment areas (less than 200 sq. ft.) to be connected to the sanitary sewer, prohibiting any hard connections to the storm drain. Requirements Costs (including capital and operation & maintenance) • Will vary depending on the size of the facility and the necessary controls. • Prevention of leaks and spills is inexpensive. Treatment and/or disposal of contaminated soil or water can be quite expensive. Maintenance (including administrative andstqffing) • This BMP has no major administrative or staffing requirements. However, extra time is needed to properly handle and dispose of spiUs, which results in increased labor costs. 4 of 9 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Spill Prevention^ Control & Cleanup SC-11 Supplemental Information Further Detail ofthe BMP Reporting Record keeping and internal reporting represent good operating practices because they can increase the efflciency of the facility and the effectiveness of BMPs. A good record keeping system helps the facility minimize incident recurrence, correctly respond with appropriate cleanup activities, and comply with legal requirements. A record keeping and reporting system should be set up for documenting spills, leaks, and other discharges, including discharges of hazardous substances in reportable quantities. Incident records describe the quality and quantity of non-stormwater discharges to the storm sewer. These records should contain the following information: • Date and time of the incident • Weather conditions • Duration of the spiU/leak/discharge • Cause of the spiU/leak/discharge • Response procedures implemented • Persons notified • Environmental problems associated with the spill/leak/discharge Separate record keeping systems should be established to document housekeeping and preventive maintenance inspections, and training activities. All housekeeping and preventive maintenance inspections should be documented. Inspection documentation should contain the following information: • The date and time the inspection was performed • Name of the inspector • Items inspected • Problems noted • Corrective action required • Date corrective action was taken Other means to document and record inspection results are field notes, timed and dated photographs, videotapes, and drawings and maps. Aboveground Tank Leak and Spill Control Accidental releases of materials from aboveground liquid storage tanks present the potential for contaminating stormwater with many different pollutants. Materials spilled, leaked, or lost from January 2003 California Stormwater BMP Handbook 5 of 9 Industrial and Commercial www.cabmphandbooks.com SC-11 Spill Prevention^ Control & Cleanup tanks may accumulate in soils or on impervious surfaces and be carried away by stormwater mnoff. The most common causes of unintentional releases are: • InstaUation problems • Failure of piping systems (pipes, pumps, flanges, couplings, hoses, and valves) • External corrosion and stmctural failure • Spills and overfills due to operator error • Leaks during pumping of liquids or gases from tmck or rail car to a storage tank or vice versa Storage of reactive, ignitable, or flammable liquids should comply with the Uniform Fire Code and the National Electric Code. Practices listed below should be employed to enhance the code requirements: • Tanks should be placed in a designated area. • Tanks located in areas where firearms are discharged should be encapsulated in concrete or the equivalent. • Designated areas should be impervious and paved with Portland cement concrete, free of cracks and gaps, in order to contain leaks and spUls. • Liquid materials should be stored in UL approved double walled tanks or surrounded by a curb or dike to provide the volume to contain lo percent of the volume of aU of the containers or no percent of the volume of the largest container, whichever is greater. The area inside the curb should slope to a drain. • For used oil or dangerous waste, a dead-end sump should be instaUed in the drain. • All other liquids should be drained to the sanitary sewer if available. The drain must have a positive control such as a lock, valve, or plug to prevent release of contaminated liquids. • Accumulated stormwater in petroleum storage areas should be passed through an oil/water separator. Maintenance is critical to preventing leaks and spills. Conduct routine inspections and: • Check for external corrosion and structural failure. • Check for spills and overfills due to operator error. • Check for failure of piping system (pipes, pumps, flanger, coupling, hoses, and valves). • Check for leaks or spills during pumping of liquids or gases from tmck or rail car to a storage facility or vice versa. 6 of 9 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Spill Prevention^ Control & Cleanup SC-11 • Visually inspect new tank or container installation for loose fittings, poor welding, and improper or poorly fitted gaskets. • Inspect tank foundations, connections, coatings, and tank walls and piping system. Look for corrosion, leaks, cracks, scratches, and other physical damage that may weaken the tank or container system. • Frequently relocate accumulated stormwater during the wet season. • Periodically conduct integrity testing by a qualified professional. Vehicle Leak and Spill Control Major spills on roadways and other public areas are generally handled by highly trained Hazmat teams from local fire departments or environmental health departments. The measures listed below pertain to leaks and smaller spills at vehicle maintenance shops. In addition to implementing the spill prevention, control, and clean up practices above, use the foUowing measures related to specific activities: Vehicle and Equipment Maintenance • Perform all vehicle fiuid removal or changing inside or under cover to prevent the run-on of stormwater and the runoff of spills. • Regularly inspect vehicles and equipment for leaks, and repair immediately. • Check incoming vehicles and equipment (including delivery tmcks, and employee and subcontractor vehicles) for leaking oil and fluids. Do not aUow leaking vehicles or equipment onsite. • Always use secondary containment, such as a drain pan or drop cloth, to catch spiUs or leaks when removing or changing fluids. • Immediately drain all fluids from wrecked vehicles. • Store wrecked vehicles or damaged equipment under cover. • Place drip pans or absorbent materials under heavy equipment when not in use. • Use adsorbent materials on smaU spUls rather than hosing down the spill. • Remove the adsorbent materials promptly and dispose of properly. • Promptly transfer used fluids to the proper waste or recycling dmms. Don't leave fuU drip pans or other open containers lying around. • Oil filters disposed of in trashcans or dumpsters can leak oil and contaminate stormwater. Place the oil filter in a funnel over a waste oil recycling dmm to drain excess oil before disposal. Oil filters can also be recycled. Ask your oil supplier or recycler about recycling oil filters. January 2003 California Stormwater BMP Handbook 7 of 9 Industrial and Commercial www.cabmphandbooks.com SC-11 Spill Prevention^ Control & Cleanup • Store cracked batteries in a non-leaking secondary container. Do this with all cracked batteries, even if you think aU the acid has drained out. If you drop a battery, treat it as if it is cracked. Put it into the containment area until you are sure it is not leaking. Vehicle and Equipment Fueling • Design the fueling area to prevent the mn-on of stormwater and the runoff of spills: Cover fueling area if possible. Use a perimeter drain or slope pavement inward with drainage to a sump. - Pave fueling area with concrete rather than asphalt. • If dead-end sump is not used to collect spills, install an oil/water separator. • InstaU vapor recovery nozzles to help control drips as well as air pollution. • Discourage "topping-off of fuel tanks. • Use secondary containment when transferring fuel from the tank tmck to the fuel tank. • Use adsorbent materials on small spflls and general cleaning rather than hosing down the area. Remove the adsorbent materials promptly. • Carry out all Federal and State requirements regarding underground storage tanks, or install above ground tanks. • Do not use mobile fueling of mobile industrial equipment around the facflity; rather, transport the equipment to designated fueling areas. • Keep your SpiU Prevention Control and Countermeasure (SPCC) Plan up-to-date. • Train employees in proper fueling and cleanup procedures. Industrial Spill Prevention Response For the purposes of developing a spill prevention and response program to meet the stormwater regulations, facility managers should use information provided in this fact sheet and the spUl prevention/response portions of the fact sheets in this handbook, for specific activities. The program should: • Integrate with existing emergency response/hazardous materials programs (e.g.. Fire Department) • Develop procedures to prevent/mitigate spills to storm drain systems • Identify responsible departments • Develop and standardize reporting procedures, containment, storage, and disposal activities, documentation, and follow-up procedures • Address spiUs at municipal facilities, as well as public areas 8 of 9 California Stormwater BMP Handbook January 2003 Industrial and Commercial www.cabmphandbooks.com Spill Prevention^ Control & Cleanup SC-11 • Provide training concerning spill prevention, response and deanup to all appropriate personnel References and Resources CaHfomia's Nonpoint Source Program Plan htto://www..swrch.ca.gnv/nps/index.htm1 Clark County Storm Water Pollution Control Manual http://www.co.clark.wa.us/piihworks/bmpman.pdf King County Storm Water Pollution Control Manual httD://dnr.metrokc.gov/wlr/dss/.spcm.htm Santa Clara Valley Urban Runoff Pollution Prevention Program http://www..scvurppp.org The Stormwater Managers Resource Center http://www.stormwatercenter.net/ January 2003 California Stormwater BMP Handbook 9 of 9 Industrial and Commercial www.cabmphandbooks.com Vegetated Swale TC-30 Maintenance Concerns, Objectives, and Goals • Channelization • Vegetation/Landscape Maintenance • Vector Control • Aesthetics • Hydraulic and Removal Efficacy General Description Vegetated swales are open, shaUow channels with vegetation covering the side slopes and bottom that coUect and slowly convey mnoff flow to downstream discharge points. They are designed to treat mnoff through filtering by the vegetation in the channel, filtering through a subsoil matrix, and/or infiltration into the underlying soUs. Swales can be natural or manmade. They trap particulate pollutants (suspended solids and trace metals), promote infiltration, and reduce the flow velocity of stormwater runoff. Vegetated swales can serve as part of a stormwater drainage system and can replace curbs, gutters and storm sewer systems. Therefore, swales are best suited for residential, industrial, and commercial areas with low flow and smaller populations. Inspection/Maintenance Considerations It is important to consider that a thick vegetative cover is needed for vegetated swales to function properly. Usually, swales require little more than normal landscape maintenance activities such as irrigation and mowing to maintain pollutant removal efficiency. Swales can become a nuisance due to mosquito breeding in standing water if obstmctions develop (e.g., debris accumulation, invasive vegetation) and/or if proper drainage slopes are not implemented and maintained. The application of fertilizers and pesticides should be minimized. Targeted Constituents Sediment A / Nutrients • / Trash • / Metals • / Bacteria • ^ Oil and Grease A / Organics A Legend (Removal Effectiveness) • Low • High A Medium CASQA California Stormwater Quality Association January 2003 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com 1 of 3 TC-30 Vegetated Swale Xnspactlon ActivltlM • Inspect after seeding and after first major storms for any damages. • I nspect for signs of erosion, damage to vegetation, channelization of flow, debris and litter, and areas of sediment accumulation. Perform inspections at the beginning and end ofthe wet season. Additional inspections after periods of heavy runoff are desirable. • Inspect level spreader for clogging, grass along side slopes for erosion and formation of rills or gullies, and sand/soil bed for erosion problems. MalntsnahoB Activttiss • Mow grass to maintain a height of 3-4 inches, for safety, aesthetic, or other purposes. Litter should always be removed prior to mowing. Clippings should be composted. • Irrigate swale during dry season (April through October) or when necessary to maintain the vegetation. • Provide weed control, if necessaiy to control invasive species. • Remove litter, branches, rocks blockages, and other debris and dispose of properly. • Maintain inlet flow spreader (if applicable). • Repair any damaged areas within a channel identifled during inspections. Erosion rills or gullies should be corrected as needed. Bare areas should be replanted as necessary. • Declog the pea gravel diaphragm, if necessary. • Correct erosion problems in the sand/soil bed of dry swales. • Plant an altemative grass species if the original grass cover has not been successfully established. Reseed and apply mulch to damaged areas. • Remove all accumulated sediment that may obstruct flow through the swale. Sediment accumulating near culverts and in channels should be removed when it builds up to 3 in. at any spot, or covers vegetation, or once it has accumulated to 10% ofthe original design volume. Replace the grass areas damaged in the process. • Rototill or cultivate the surface of the sand/soil bed of dry swales if the swale does not draw down within 48 hours. Sugo««t«d Fr«qu«ncy Post construction Semi-annual Annual Suggastad Fraquancy As needed (frequent, seasonally) Semi-annual Annual (as needed) As needed (infrequent) 2 of 3 California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com January 2003 Vegetated Swale Additional Information hX^mnfr^ ^?'r" '?°°^ S'-^^^ height and mowing frequency have httle impact on pollutant removal. Consequently, mowing may onfy be necessaiy once or ^ce a year for safety or aesthetics or to suppress weeds and woody vegetation. References Ttt'n'/f^" ^r"'"' Management Practices Manual. Available af nttp.//www.metrocounc^l.org/env1rnnmPnt/Water.«ihpr^/RMP/man^al htm U.S. Environmental Protection Agency, Post-Constmction Stormwater Management in New Development & Redevelopment BMP Factsheets. Available af cfpub.epa.gOv/npdes/stormwater/mpniiofhmp.s/hmp fil>»c ^ft^ Ventura Countywide Stormwater Quality Management Program, Technical Guidance Manual for Stormwater Quality Control Measures. July, 2002. ^uioance Manual Drain Insert General Description Drain inserts are manufactured filters or fabric placed in a drop inlet to remove sediment and debris. There are a multitiide of inserts of various shapes and configurations, typicaUy falling into one ofthree different groups: socks, boxes, and trays. The sock consists of a fabric, usuaUy constructed of polypropylene The fabric may be attached to a frame or the grate ofthe inlet holds the sock. Socks are meant for vertical (drop) inlets. Boxes are constructed of plastic or wire mesh. TypicaUy a polypropylene bag IS placed in the wire mesh box. The bag takes the form of the box. Most box products are one box; that is, the setting area and filtration through media occur in the same box. Some products consist of one or more trays or mesh grates. The trays may hold different types of media. Filtration media vary by manufacturer. Types include polypropylene, porous polymer, treated cellulose, and activated carbon. Inspection/I^aintenance Considerations Washout problems increase with rain intensity. Susceptibility of accumulated sediments to be re-suspended at low flow rates, can be corrected with an energy dissipater between gate and treatment areas. imp Inspect for sediment buildup and proper functioning. At the beginning of the wet season and after significant storms • Verify that stormwater enters the unit and does not leak around the perimeter. • Remove sediment as needed. .1 j After construction. I , At the beginning of the i wet season and as necessary Maintenance Concerns, Objectives, and Goals • Sediment Removal Targeted Constituents Sediment Nutrients Trash Metals Bacteria Oil and Grease Organics Removal Effectiveness See New Development and Redevelopment Handbook-Section 5. • • • • • • ^1Q A California Stormwater Quaiity Association California Stormwater BMP Handbook Industrial and Commercial www.cabmphandbooks.com 1 of 1 Pervious Pavements SD-20 Design Objectives 0 Maximize Infiltration 0 Provide Retention 0 Slow Runoff Minimize Impervious Land Coverage Prohibit Dumping of Improper Materials Contain Pollutants Coflect and Convey 0 Description Pervious paving is used for Hght vehicle loading in parking areas. The term describes a system compnsmg a load-bearing, durable surface togetiier with an underlying layered stinchire tiiat temporarily stores water prior to infilb-ation or drainage to a conti-oUed outiet The surface can Itself be porous such tiiat water infilti-ates across tiie entire surface of tiie material (e g grass and gravd surfaces, porous concrete and porous asphalt), or can be built up of impermeable blocks separated by spaces and joints, tiirough which tiie water can drain. This latter system is termed 'permeable' paving. Advantages of pervious pavements is tiiat tiiey reduce runoff volume while providing ti-eatment, and are unobtirisive resulting in a high levd of acceptabiHty. Approach Attenuation of flow is provided by tiie storage witiiin tiie underlying stiTictiire or sub base togetiier witii appropriate flow conti-ols. An underlying geotextile may permit groundwater recharge, tiius conhibuting to tiie restoration oftiie natiiral water cyde. Altematively where infilti-ation is mappropriate (e.g., if tiie groundwater vulnerabUity is hi^, or tiie soU type is unsuitable), the surface can be constincted above an impermeable membrane. The system offers a valuable solution for drainage of spatiaUy constrained urban areas. Significant attenuation and improvement in water quaHty can be achieved by permeable pavements, whichever metiiod is used. The surface and subsurface infrastiiictiire can remove botii tiie soluble and fine particulate pollutants tiiat occur witiiin urban runoff Roof water can be piped mto tiie storage area directiy, adding areas from which tiie flow can be attenuated Also, witiiin Hned systems, tiiere is tiie opportunity for stored runoff to be piped out for reuse. Suitable Applications Residential, commerdal and industrial apphcations are possible. The use of permeable pavement may be restricted in cold regions, arid regions or regions with high wind erosion. There are some specific disadvantages associated with permeable pavement, which are as foUows: January 2003 California Stormwater BMP Handbook New Development and Redevelopment www. cabmphandbooks. com 1 of 10 SD-20 ' axleloads«nd ^.^"^ mph limit), car parking areas and otiier HglZraScS™ • The use of permeable pavement is restiicted to gentie slopes. - Porous block paving has a higher risk of abrasion and damage tiian soHd blocks. Design Considerations Designing New Installations Design Guidelines • The subgrade should be able to sustain ti-affic loading witiiout excessive deformation California Stormwater BMP Handbook New Development and Redevelopment www.cabmphandbooks.com January 2003 Pervious Pavements SD-20 ^nnfi W '"^r^ '^""fu ^^"^^ "^^"^ specificalfy for pervious pavements. AUowances should be considered tiie foUowmg factors in tiie design and specification of materials: • Pervious pavements use materials witii high permeabiHty and void space. AU tiie current UK pavement design methods are based on tiie use of conventional materials tiiat are dense and relativefy impermeable. The stiffness of tiie materials must tiierefore be assessed. ' Sowed^for^ constmction and can soften and weaken materials, and tiiis must • Existing design metiiods assume fiill friction between layers. Any geotextiles or geomembranes must be carefiilly spedfied to minimize loss of friction between layers. - Porous asphalt loses adhesion and becomes brittle as air passes tiu-ough tiie voids Its durabihty is therefore lower than conventional materials. Itl^^ f^^"^ of materials used means tiiat care should be taken to ensure tiiat loss of tmer particles between unbound layers does not occur. Po^tioniiy a geotextile near tiie surface of tiie pervious constiuction should enable poUutants to be frapped and retained close to tiie surface of tiie consfruction. This has botii advaStage^d St^tfft'^vw^' "J"^ disadvantage is tiiattiie filtering of sediments and tiieir assodatJ poUutants at tins levd may hamper percolation of waters and can eventiialfy lead to surface ponding. One advantage is tiiat even if eventiial maintenance is required to reinstate mfilfration, onfya Hmited amomit of tiie consfruction needs to be distiirbed, since tiie sub-base bdow tiie geot«rtile IS protected. In addition, tiie pollutant concenfration at a high level in th^ sti-uctiire aUows for ite release over time. It is slowfy ti-ansported in tiie stormwater to lower levels where chemical and biological processes may be operating to retain or degrade poUutants. S^e^^iSb^t^^e^^^^^ • fX°!f The choice of raaterials is tiierefore a compromise between stifftiess, permeabiHty and storage capadty. • fi^T ^^-^/^^^^ capping wUl be in contact witii water for a laige part oftiie time tiie sti-engtih and durabihty oftiie aggregate partides when sattirated and subjected to ' wetting and drying should be assessed. - A uniformly graded single size material cannot be compacted and is liable to move when constmction b-affic passes over it. This effect can be reduced by tiie use of angular cmshed rock matenal witii a high surface fiiction. *uwuMiea nnlhS r^pnn'""^ '"^T "^T ^^^^"^ '"P""'""' °^ 'Chemical and biological ?n degradation processes. The consfruction materials should be selected LpiJl S?- T^"^"^ ^''^''^ properties, for tiieir abUity to sustain such processes. In fZu' ^^.rr ^} '^^^^ slightiy aUcaline conditions and tiiey should provide favorable sites for colonization by microbial populations SD-20 Pervious Pavements Construction/Inspection Considerations • Permeable surfaces can be laid witiiout cross-faUs or longihidinal gradients. • The blocks should be lain level • They should not be used for storage of site materials, unless tiie surface is weU protected from deposition of silt and otiier spiUages. prorecteo • ?^.^P*'^^"\^"^f ""Idb^'^onst^ctedinaa^^^ as one of tiie last items to be ^O^ITH development site. Landscape development sholild be completed bSo^ pavement constiuction to avoid contamination by sUt or sofl fi^m tiiis source. pavement - Smfaces draining to tiie pavement should be stabihzed before constiuction of tiie pavement. • H» m f Tfi!^ constiniction equipment should be kept away from tiie pavement to prevent damage to the surface, sub-base or sub-grade. IWIL to prevent Maintenance Requirements T^I^T"? requiremente of a pervious smface should be reviewed at tiie time of desien and shoidd be clearfy specified. Maintenance is required to prevent clogging of ZlerZT surface. The factoid to be considered when defining raainteAance requfr^fnirust 3e: • Type of use • Ownership • Level of frafficking • The local environment and any contiibuting catchments Shidies in tiie UK have shown satisfactoiy operation of porous pavement systems witiiout mmntenance for over lo yeai^ and recent work by Imbe et al. at gtii ICUD, PoSid 20S de«:nbessystemsoperatingforover20yearswitiioutmaintenance. How;ver p^orXce rT^™^^^^"^"'=°"l^-^b«g---teed,Tableishows^^^^ California Stormwater BMP Handbook New Development and Redevelopment www.cabmphandbooks.com January 2003 Pervious Pavements SD-20 Table 1 Typical Recommended Maintenance Reaimes Activity Schedule • Minimize use of salt or grit for de-icing a Keep landscaped areas well maintained • Prevent soil being washed onto pavement Ongoing a Vacuum clean surface using commercially available sweeping machines at the following times: End of winter (April) - Mid -summer (July / August) - After Autumn leaf-fall (November) 2/3 X per year a Inspect outlets Annual a If routine deaning does not restore infiltration rates, then reconstruction of part of the whole of a pervious surface may be required. a The surface area affected by hydraulic failure should be lifted for inspection ofthe internal materials to identify the location and extent of the blockage. a Surface materials should be lifted and replaced after brush cleaning. Geotextiles may need complete replacement a Sub-surface layers may need cleaning and replacing. a Removed silts may need to be disposed of as controlled waste. As needed (infrequent) Maximum 15-20 years Permeable pavements are up to 25 % cheaper (or at least no more expensive tiian tiie fraditional forms of pavement constiuction), when all constiuction and drainage costs are taken into account (Accepting tiiat tiie porous asphalt iteelf is a more expensive smfacing, tiie exti-a cost of which IS offset hy tiie savmgs in mideigromid pipework ete.) (Niemczynowicz^tt al., X) Table 1 gives US cost estimates for capital and maintenance costs of porous pavements (Landphair etai., 2000) Redeveloping Existing Installations Variousjurisdictional stormwater management and mitigation plans (SUSMP WQMP ete) define redeve opment" in terms of amounte of additional impervious area, mcre^s iA gross floor area and/or extenor constiuction, and land distiu-bing activities witii stiiichu-al or inipra^ous surfaces. The definition of" redevelopment" must be consulted to determine whetiier or not tiie requirements for new development appfy to areas intended for rbo:;lKdtMte?^^^^ SD'20 Pervious Pavements Additional Information Cosf Considerations Permeable pavements are up to 25 % cheaper (or at least no more expensive tiian tiie fraditional torms of pavement constiuction), when aU constiuction and drainage costs are taken into account. (Accepting tiiat tiie porous asphalt iteelf is a more expensive surfadng, tiie exti-a cost of wmch is offset by tiie savings in undeiground pipework ete.) (Niemczynowicz, et al., 1987) Table 2 gives US cost estimates for capital and maintenance coste of porous pavements (Landphair et aL, 2000) California stormwater BMP Handbook ^^^^anu^y^OoT New Development and Redevelopment www.cabmphandbooks.com o fM I Q (0 (0 c <u E a; > a 3 O • in > a o I r^ I'O 1 c CO "ai 8 •o Ql Q X) "O c c ID (D .1-. x: • c a : <u F E| > 1 si (J o I o fN ID c ID ^'^"^O , Pervious Pavements other Resources Abbott C.L. and Comino-Mateos L. 2001. In situ performance monitoring ofan infiltration armnage system and field testing of current design procedures. Joumal CIWEM, 15(3), pp.198- Constiiiction Industiy Research and Information Association (CIRIA). 2002. Source Control using Constructed Pervious Surfaces C582, London, SWiP 3AU. Constiuction Industiy Research and Information Association (CIRIA). 2000. Sustainable urban Consti-uction Industiy Research and Information Association (CIRIA). 2000 C522 Sustainable urban drainage systems - design manual fijr England and Wales, London, SWiP 3AU. Consti-uction Industiy Research and Information Association (CIRIA). RP448 Manual of good practice fiir the d^gn, construction and maintenance of infiltration drainage systems fbr stormwater runoff control and disposal, London, SW1P3AI]. Dierkes C, Kuhlmann L., Kandasamy J. & AngeHs G. PoUution Retention Capabihty and Mamtenance of Permeable Pavemente. Proc 9^ Intemational Conf^ence on Urban Drainage Portland Oregon, September 2002. Hart P (2002) Permeable Paving as a Stormwater Source Confrol Systera. Paper presented at Scottish Hydrauhcs Stiidy Group i^"- Annual serainar, SUDS. 22 Mardi 2002, Glasgow. Kobayashi M., 1999. Stormwater runoff conti-ol in Nagoya City. Proc. 8 tii Int Conf. on Urban Storm Drainage, Sydney, Ausfralia, pp.825-833. Landphair, R, McFalls, J., Thompson, D., 2000, Design Metiiods, Selection, and Cost Effechvmess of Stormwater QuaHty Sti-uchires, Texas TVansportation Instittite Research Report 1037-1, CoUege Station, Texas. ^ Legret M, Colandini V, Effects of a porous pavement witii reservior stioicuti-e on runoff water:water quaHty and tiie fate of heavy metals. Laboratdre Cenfral Des Ponts et Chaussesss Macdonald K& Jefferies C. Performance Comparison of Porous Paved and Traditional Car Parks. Proc. First National Conference on Sustainable Drainage Systems, Coventi-y June 2001. Niemczynowicz J, Hogland W, 1987: Test of porous pavemente performed in Lund, Sweden in Topics in Drarnage HydrauUcs and Hydrology. BC. Yen (Ed), pub. Int. Assoc. For Hydraulic Research, pp 19-80. PrattCJ. SUSTAINABLE URBAN DRAINAGE - A Review of published raaterial on tiie performance of various SUDS devices prepared for tiie UK Environment Agency Coventiv Umversity, UK December 2001. * ^- y Pratt C.J., 1995. Infilfration drainage - case stiidies of UK practice. Project Report California Stormwater BMP Handbook """"""^anuary'2003' New Development and Redevelopment www. cabmphandbooks. com Pervious Pavements 22,ConstiTic1ion Industiy Research and Information Assodation, London SWiP qAU- also known as National Rivers Autiiority R&D Note 485 ^""on, awir 3AU, also Pratt. C. J., 1990. Permeable Paveraente for Stormwater OuaHti^ Enhanrempni- in- TTT-K.., Stormwater QuaHty Enhanceraent - Source Confrol, refro^ ^"raEd Lwe^ technology, Ed. H.C. Tomo, ASCE, ISBN 087262 7594, pp. 131-155 ScMiiterW. & Jefferies C Monitoring tiie outflow from a Porous Car ParA: Proc FirstNational Conference on Sustainable Drainage Systems, Coventry June 2001. ^rst National ^^^JS ' ' ^'^y' SUDS in Scotiand - tiie Scottish SUDS database California Stormwater BMP Handbook New Development and Redevelopment www. cabmphandbooks. com 9 of 10 SD-20 Pervious Pavements liiip«mncat>ie Membrane 1 ParmciHs -4 -»ToMt»r Inalimil OT r«UH Gwdtxlllc Pmmcautc Sub-base (a) Parvloui pavanwiH und lor attamiaHon (b) Pwviaui pavarmnt uud lor infMlnMion Schematics of a Pervious Pavement System 10 of 10 Califomia Stormwater BMP Handbook New Development and Redevelopment www. cabmphandbooks. com January 2003 stomi Water Management Plan Report - SWMPR 5425 Paseo Del Norte- Carlsbad, CA CORNERSTONE ENGINEERING, INC. APPENDIX E "FloGard" Downspout Filters Specifications Flo-Gard™ Downspout Filter See full specifications fordetaiis. Questions? Contact Kristar at (800) 579-8819. 05/03/04 Model No. Inlet ID (India.) Box Dim. (in X in X in) Solids Storage Capacity (cuft) Filtered Flow (cfe) Totai Bypass Can IrM FG-DS4 4 14x24x7.5 0.35 0.35 1.15 FG-DS6 6 14x24x7.5 0.35 0.35 1.15 FG-DS8 8 22 x 28x17.5 2.60 1.40 4.35 FG-DS10 10 22x51x17.5 5.20 2.60 4.35 NOTES: 1. Storage capacity reflects m of maximum solids collection prior to Impeding filtering bypass. 2. Filtered How rate includes a safrty factor of 2. 3. FIfrGaid Downspout Filters are available witli standard Fossil Rock or zeolite adsorbent Call for details on specialty adsorbents. 4. FI»Gard+Plu8 fliter Inserte should be used In conjunctton wfth a regular maintenance program. Referto manufacturer's recommended maintenance guidelines. US FATEMT PENDING FLO-GARD ™ DOWNSPOUT FILTER KriStar Enterprises, Inc., Santa Rosa, CA (800) 579-8819 storm Water Management Plan Report - SWMPR 5425 Paseo Del Norte; Carlsbad, CA CORNERSTONE ENGINEERING, INC. APPENDIX F "FloGard" Plus - Catch Basin Inserts Specifications o, th -•rHrjry--S, .'-Oltm-ih ii) i-i •^•jy.ir: Ro-Gard+Rus R Iter installed F/o-GarcfTM +Plus A multipurpose catch basin insert designed to capture sediment debris, trash & oils/grease from low (first flush) flows c^b';nTrou;dSitsT'' *° industry-standard drainage inlets (...flat grated, combination. Questions? Contact Kristar at (800) 579-8819. 05/03/04 Flo-Gard+Plus Filter installed SPECIFIER CHART Model Na Inlet Wkitli (in) Solids Storage Capacitv (cuft) Filtered Row . (cfe) Total Bypass CanL tHsA FGP-24a 24 0.9 0.8 5L6 FGP-30a 30 1.1 1.0 a7 FGP-36CI 36 1.4 1.2 7.9 FGP-42a 42 1.6 1.4 a8 FGP-48a 48 1.9 1.5 9.9 FGP-5.0a 60 23 1.8 11.6 FGP^Oa 72 2.8 22 13.8 FGP-7.0a 84 3.2 25 15.9 FGP^.Oa 96 3.7 29 1&0 FGP-iaoa 120 4.6 3.5 21.9 FGP-120a 144 5.6 4.2 26.2 FGP.14.0a 168 6.5 4.9 30.1 FGP-I&oa 192 7.5 5.6 34.4 FGP-I&oa 216 8.3 6.2 3&2 FGP-21.0a 252 9.7 7.2 44.3 FGP-2aoa 336 110 9.5 58.6 NOTES: 1. Storage capaciiy reflects 80% of maximum solids collection prior to Impeding flitering bypass. 2. Filtersd flow rate includes a safety factor of Z J. FIo-GardtPlus Catch Basin Flfer Inserts «aviyiable In Hie standard sizes (see above) or in custom sizes. Cal for detaUs on custom size inserts 4. AvallaUe with recessed mount padi^ including Ig tray alovring matntenance access ftom mnhole. 5. Flo^aPdtPlus fliter tnserte should be used in conjunction with a regular maintenance program. Referto marxifacturei's recommended meinlemnce giidellnes. USRMENT FLO.GARD™+PLUS CATCH BASIN FILTER INSERT (Curb Mount) CURB INLET KriStar Enterprises, Inc., Sanla Rosa, CA (800) 579.8819 OS/04 Flo-Gard+Plus Filter instaiied Model No. Inlet ID (In X in) Grate OD (inxin) Solids Storage Capacity (cu ft Filtered Flow (cfs) Total Bypass Cap, (cfe) FGP-12F 12x12 14x14 0.3 0.4 28 FGP-1530F 15x30 16x36 2.3 1.6 6.9 FGP-16F 16x16 18x18 0.8 0.7 4.7 FGP-18F 18x18 20x20 0.8 0.7 4.7 FGP-1822F 20x24 18x22 21 1.4 5.9 FGP-1824F 16x22 20x24 1.5 1.2 5.0 FGP-1836F 18x36 18x40 2.3 1.6 6.9 FGP-2024F 20x24 22x24 1.2 1.0 5.9 FGP-21F 22x22 24x24 22 1.5 6.1 FGP-2142F 21x42 26x42 43 24 9.1 FGP-24F 24x24 26x26 22 1.5 6.1 FGP-2436F 24x36 24x40 3.4 20 8.0 FGP-2445F 24x45 26x47 4.4 2.4 9.3 FGP-2448F 24x48 26x48 4.4 2.4 9.3 FGP-28F 28x28 30x30 22 1.5 6.3 FGP-30F 30x30 30x34 3.6 20 8.1 FGP-36F 36x36 36x40 4.6 2.4 9.1 FGP-3648F 36x48 40x48 6.8 3.2 11.5 FGP-48F 48x48 48x52 9.5 3.9 13.2 NOTES: 1. Storage capacity reflects 80% of maximum solds collection prior to Impadng flitering bypis& Z HIterad flow rats Indudes a safety faclor of Z 3. FioOanHPius Catch Basin Hilar Inserts are avdlMs In the standard sizes (see above) or in custom sizes. Call fbr detalls on custom size inserts. 4. RoX3ar«nus fliter Inserts should boused In conjunction wKhareguiarnalntenancaprDTam Referto maraActurer's recommended maintenance giideibies. US PATENT FLO-GARD™+PLUS CATCH BASIN FILTER INSERT (Frame Mount) FLAT GRATED INLET KriStar Enteiprises, Inc., Santa Rosa, CA (800) 579-8819 OMM Flo-Gard+Plus Filter installed Model Na Inlet 10 (India.) Grate OD (in dia.) Solids storage Capacity (cuft) Filtered Flow (cfe) Total Bypass Cao. (cfe) F6P-RF15F 16 18 0.3 OA 2.8 FGP-RF18F 18 19 0.3 0.4 28 FGP-RF20F 20 22 0.8 0.7 4.7 FGP-RF22F 22 24 0.8 0.7 4.7 FGP-RF23F 23 25.5 0.8 0.7 4.7 FGP-RF24F 24 26 0.8 0.7 4.7 NOTES: US PATENT 1. StDragacapacityreflects80%armaxlmumsollds coiiscflon prior to Impeding flitering bypass. Z Filtered flow rats Includes a salMy factor of Z 3. FloCanHPIus Catch Basin HIter Inserts are avdIaUs In the sfandard sizes (see above) or in custom sizes. Call for detalls on custom size Inserts. 4. Flo<5anlK>lus fliter Inserts should be used in conjunction with a regular makitanance progam Referto manufacturer's recommended maintenance guldelinss. FLO-GARD™+PLUS CATCH BASIN FILTER INSERT (Frame Mount) ROUND GRATED INLET KriStar Enteiprises, Int, Santa Rosa, CA (800) 579-8819 Ro-Gard+Plus Filter installed Model Na Inlet ID Irin (Inxin) Inlet ID max (In x in) Solids Storage Capacity (cuft) Filtered Flow (cfe) Total Bypass Cap, (cfe) FGP-1836W 16x33 21x39 23 1.6 6.7 FGP-24W 22x22 26x26 2.2 1.5 5.9 FGP-2436W 22x33 28x38 3.4 2.0 7.7 FGP-2436VVE 22x35 28x39 3.4 20 7.7 FGP-28W 26x26 30x30 22 1.5 5.9 FGP-36W 30x33 39x42 4.6 2.4 8.7 NOTES: 1. Storage capacity reflects 80% of maxinum solds collecflon prior to inpeding filtering bypass. Z Filtered flow rete includes a safely factor of Z 3. Ho^SanHPIus Catch Basin Filer inserts »eavaii*ie in the standard sizes (see above) or in custom sizes. Call fbr detalls on custom size Inserts. 4. H>Gard*Plus fliter Inserts shouid be used in conjimction with a regular maintenance pragram Referto manufacturer's recommended maintenance guldelnes. US PATENT FLO-GARD+PLUS CATCH BASIN FILTER INSERT (Wbll Mount) COMBINATION INLET KriStar Enterprises, Inc, Santa Rosa, CA (800) 579-8819 05/04 storm Water Management Plan Report - SWMPR 5425 Paseo Dei Norte. Carlsbad, CA CORNERSTONE ENGINEERING. INC. APPENDIX G Curb Marker Information •'i'-)j'^'JO':<: 7 roni, .:.:,jniy nmr ri •• Storm Drain Markers, das Manufacturing Storm Drain Markers • Permanent Pavement Marking Replaces Stenciling Page 1 of2 d^s Curb Marker^ Horn LouUion & Dam^ I'mmtioit • SUnm Di uiii Marking InstaUatton FAQ .\ms and Views Request lififrature R^ist^rfor Promotions Links Reps/Distributors Storm Drain Markers Public education and outreach is part of the NPDES requirement. Storm drain marking is an established method of involoving the public and increasing community awareness about non-point source pollution. Unfortunately storm drain marking using spray painted stencils is messy, time consuming, and contradictory to the environmental message being presented (it eventually washes down the "protected" drain). It's also ultimately quite expensive as it must be re-done every couple of years. Our storm drain marker is the only performance proven alternative available. It's available in Stock Titles or Custom manufactured to virtually any size, shape or number of colors. See Our Storm Drain Markers To see our stock markers and samples of our custom markers, click the mari<er. Stock and Custom Storm Drain Markers Three Storm Drain Marker Styles Available GOOD The das Economark Curb Marker is made from a 030 clear polycarbonate (lexan) printed on the reverse side ofthe material This protects the imprinted image from scratehing. Double coated back to reduce see-through. BETTER The das Standard Curb Marker is made from a 030 propnetary white plastic with UV inhibitors and a layering of materials for flexibility and impact resistance. The printing is on the face ofthe material which is then covered with a layer of UV clearcoating for UV and abrasion resistance. Our original. Introduced in 1983. BEST The das Duracast Curb Marker is the same as the Standard with one additional feature. A polyurethane "dome" is applied to the face ofthe niarker. This optically clear, self-healing, non-yellowing Duracast surface protects against mechanical and chemical abrasion The Duracast surface effectively doubles U.V. resistance as well It is' our most Durable marker. http://www.dasmanufacturing.coni/storm/index.html Storm Drain Markers, das Manufacturing das Manufacturing offers • Free Design Service • 12-Year Warranty Inform the Public das offers a variety of custom printed collateral items to support your marking program. Door hangers to inform the public, buttons, refrigerator door magnets, and sports bottles are all available for those hard-working volunteers. Page 2 of2 FAO I M""^ ' ^ff^'^^-f^P^^-S^^^^y^i^ I Stom Dmin Markers | Installation FAQ I N_ews .andViews | ReauestLUemture | RegisieiJorBemotLons | UnksjDMrLbutoj Page Why das? das Manufacturing, Inc, 3610 Cinnamon Trace Drive • Valrico FL 33594 800-549-6024 • 813-681-6024 • Fax: 813-681-5807 E-Mail: salesigcurbmarker.com E-Mail Us Comments or Questions About Our Web Site: commmtsjganWkeLMm © 2001, das Manufacturing, Inc. All rights reserved No part ofthis site, including sample designs, may be reproduced in any form without the prior written consent of das Manufacturing Inc http://vmw.dasmanufacturing.com/stonn/index.html Storm Drain Markers, das Manufacturing P^^'" Markers • Permanent Pavement Marking Replaces Stenciling Page 1 of2 d^s Curb Markers Horn Location & Danube Pmmtion w .Stoiiii Diuiii ^ Maikiiiu Instillation PAQ S0WS and Views Request Literature Roister for Promotions Ltnits Reps/Distributors Storm Drain Markers Public education and outreach is part of the NPDES requirement. Storm drain marking is an established method of involoving the public and increasing community awareness about non-point source pollution. Unfortunatety storm drain marking using spray painted stencils is messy, time consuming, and contradictory to the environmental message being presented (it eventually washes down the "protected" drain). It's also ultimately quite expensive as it must be re-done every couple of years. Our storm drain marker is the only performance proven alternative available. It's available in Stock Titles or Custom manufactured to virtually any size, shape or number of colors. See Our Storm Drain Markers To see our stock markers and samples of our custom markers, click the marker. Stock and Custom Storm Drain Markers Three Storm Drain Marker Styles Available GOOD The das Economark Curb Marker is made from a 030 clear polycarbonate (lexan) printed on the reverse side ofthe material This protects the imprinted image from scratehing. Double coated back to reduce see-through. BETTER The das Standard Curb Marker is made from a 030 propnetary white plastic with UV inhibitors and a layering of materials for flexibility and irnpact resistence. The printing is bn the face of the material which is then covered with a layer of UV clearcoatinq for UV and abrasion resistence. Our original. Introduced in 1983. ^^^1^^ Duracast Curb Marker is the same as the Stendard With one additional feature. A polyurethane "dome" is applied to the face ofthe niari^er. This optically clear, self-healing, non-yellowing Duracast surface protects against mechanical and chemical abrasion The Duracast surface effectively doubles U.V. resistence as well It is' our most Durable marker. http://wvm.dasmanufacturing.com/storm/index.html 1 r\ /•* A 1^ r\ ^ im Storm Drain Markers, das Manufacturing das Manufacturing offers • Free Design Service • 12-Year Warranty Inform the Public das offers a variety of custom printed collateral items to support your marking program. Door hangers to inform the public, buttons, refrigerator door magnets, and sports bottles are all available for those hard-working volunteers. Page 2 of2 r A rM ' LocationADam_a^Pj:eve^^^^ | SLonn. Drain Markers | Inst_alLation t AQ I News and_yiews | RequesLLiterature | IkgLsteribLPLomotLons | Links | Distnbutor Page Why das? das Manufacturing, Inc, 3610 Cinnamon Trace Drive • Valrico FL 33594 800-549-6024 • 813-681-6024 • Fax: 813-681-5807 E-Mail: sales@curbmarker.com E-Mail Us Comments or Questions About Our Web Site: cgrnments@curbmarker com © 2001, das Manufacturing, Inc. All rights reserved. No part ofthis site, including sample designs, may be reproduced in any form without the prior written consent of das Manufacturing, Inc. http://www.dasmanufacturing.com/storm/index.html Stonn Drain Markers, das Curb Markers _ ^^Q*""^ P''^'" Markers - Permanent Pavement Marking Replaces Stenciling Page 1 of2 Return to Main Storm Drain Markers Page das Curb Markers Stock Storm Drain Markers Part: SDB Part: SDG Part: SDL Part: SDR Part: SDC Part; SDW Part: SDT Part: SDP Part: ORD Part: SDP Part: SDG Custom Storm Drain Markers http://www.dasmanufacturing.com/stomi/storm.html Stonn Drain Markers, das Curb Markers Page 2 of2 NO DUMPING JIOWS TO RIVER "fmmsm PAn I ' LocMion & Damage Prevent^ | Stomi Drain Markers I Installation Page Why_das? das Manufacturing, Inc, 3610 Cinnamon Trace Drive • Vakico FL 33594 800-549-6024 • 813-681-6024 • Fax: 813-681-5807 c ., „ ^ E-Mail: sales.@cuLbmaiteLco^ E-Mail Us Comments or Questions About Our Web Site: cjmmmJsm-rbmMksLcom © 2001, das Manufacturing, Inc. All rights reserved No part of this site including sample designs, may be reproduced in any form without the prior written consent of das Manufacturing Inc http://www.dasmanufacturing.com/stomi/stonn.html storm Water IVIanagement Plan Report - SWMPR 5425 Paseo Dei Norte; Carlsbad. CA CORNERSTONE ENGINEERING, INC. APPENDIX H Grass Pave Specifications i:\l}ro:oci:7S!7 • nojhi oounly QnK\:'> l7-0io. ir-:7l '••.vo)p;ro'yio,uj!C 14 05).rl iiSI"^""™ "^""8^°^ Mixture SECTION 02795 PARTI-GENERAL 101 General Provisions ".adt™;SS"^^:r Of D,v,si„„ , are hereby 1.02 Description of Work A. Work Included- 3upp„„ f„, design loar Se° ^ofSSs'''"'"S^-P™^'"^ ^^^-uace instructions furnished EndSs section " ^ manufanurer's"^ needed • ''^"''^ ^-arp sand to m< the Grasspave2 units, when B. m^^XT "^'"8 or hydroseeding. 2: SuSace''SSl°"™^'",'«^c''™ "^^O" Earthwork when needed " S«Hon 02710 Subsurface Drainage 3. Irrigation InstaUation - Section 028,0 Irrigation, when needed 103 Quality Assurance A. Follow Section 01340 requirements q"3l»ty • P °' P^^'"g projects of comparable size and 1.04 Submittals a tiZ:tS-'^T£ZTcJ''' '"f -'actions n'==i-£?S== certificates for base course and sand fill materials 1.05 Delivery. Storage, and Handling tarp to p™S fetght^^^^^^^ delivery and store under one week. Keep HydrogrL'in a ^34" /^^^^^^^^^^ ^-^-"^tion exceeds 1.06 Project Conditions projectgrass installation, nearfytheZ's«e\:~o;l*^?™^ walks p'ln'^tS^^^^ including concrete frost. B\ct?u7iXX"^^^^ -^-^ - coated with ice or fXid V' conneao \eco^^^^^^^ temperatures below 50 ' ^^lu^^ """^ ^"1 retain the roll cnrTnnt i separate, and the (aided by placement in sun for 15 o 20 r'^'^f"?"^ temperature Grasspave2 can be shipped in flat heets thTSLf " t' "^^^^^^ i^Vntlc^ated 2. Do not build on frozen work wet^.T"? l-"^^*^"" ^^O") square E. Protect partially comDlPfPrTr."; ' ^^^urated or muddv subpmH» construction trafflc XZo^-sin ^^:!^ '^'^"'^ fron^ otC^ matured (about 3 to 4 week^) Anl ^'^^^^ """^ system ha. accesst^ble by emergency and fire eqSfpS^^^ constructed must still be F. Protect adjacent iork from dl^ d^^^^^^^ ^"^1 after installation. PART 9 Do^r. ^ Grasspave2 installation. 5^^,^J 2-PRODUCTS 2.01 Availability (Contact Manufacturer) 2.02 Materials 100 3/4" 7 #40 ^ ^ #200 Cn^J-rSn^^^^ "l^ run" or "crusher run." (33% by volume to ensure long term^nZ J ?. f ""^ *° ^dded to mixture local sources to meet this sieve aXrand^^^^ ^'f«culty in ' "TiYectT'^' ^--geToScl?^^^^^^^^^ be cr'eTtf d 7 ?) Selected materials should be nearlv no. ^^^^^ concrete or river sand rdTaT.^ Ti!'-~^^ -Shed ^SSleTan^XteS^^^^^^^ set up hke concrete without sand added.) ini^^^^^^^^^^^^ commercial products and neutral in pH. and will a£T TQI P"^^'"''"' ^^'^h is non-toxic 0 5x0.5x0.02?mT20WxX'h 2^^^^^^^^ strong open grid allowing maximum g^^^^^^^^^ '^^^^^ rising from a The plastic shall be 100%%st-conrm^er ec^^^^^^^^ devebpment. HDPE. with minimum 3% carbon blaTcon^pntl^ "f?"'' Predominately Loadmg capabihty is equal to 402 kg/cSzon n"*?"^^^^^ protection.^ oyer an appropriate depth of roadbasp 1^ ^"ed with sand 510 g (18 oz.). volume = 896 sohd l^nu. '^f'' ^lack. Unit weight ~nd^^nT^ from 10 square mrrs"(K1)^'oY2'^^^^^^ Pre-assemtled" D. Sand: Obtain clean sharo sanH ^Ir.ci, !i ^ ^'^"^''^ meters (1345 sf) (one inch) high rings and sSSrtt'H '""''K ' '""^^ *° the 25 mrn" ^nair inch) thick sod (soil thickness). '^^^^"8 or using 13 mm Blue>R°rKesc^ Ki^S^ ffir'tf"'^^'^ ^ She* .•^"^-"*«n citaa"^" Zoysla, (Parking applications r^q^reTeaKst we^r °" ^"mundlng turf) generally available only by Ld o?sp ) P""""* S&ftl-Lt^^^^^^ ~so,lsofclaysllt,orHXTni?SrSslSl~^^^^^ environn^S^aX'tojecStSrcl*^^^^^^^ be provided In contatam cllri W^^^^^ from certifled sources. Seed shall weight. % weed seed content, 2d gua™tte57„r'^ 'f™' """ber. net 17 ?•? c '^'""zer. A commercial "starter" fertili7Pr xA,ith n ro^ dXrnr ~ "PS SSr^ar s-atl^^SpSn^^^^^^^^^^^ ater-'-'^-'-^foroot^^^^^^^ PART 3. EXECUTION 0.01 Inspection (Il Is reconimended that Fire n»,>„. mstaUation of Grassp,j2 ln^"^Z'SS"1Z' ^^''"l^d '<> inspect Grasspave2 installaXtn.3 '^''<'"' ""ditions. Do not start 3.02 Preparation soils and otherwise structJrauTwerf''^'""•^ "° additional modiflca L Rn geotextiles. geogrids. and%7™ZSZlr5' """"'^ ">°diflca.io„s, Luch a^ gra*ng„dsoll porosity Of theSrjli^^^^^^^^^^ £io^iS.=Hfi«^^^ unlund sand/sod fill ,o F™ai Grade " ' "•5-) for GSs;ale2 3.03 Installation of GrasspaveZ Units -ing ^p^T>^z7::Se^T:i>s^''^:r -p. a-d units. Units can be easily shaned ZTth ^ ^- 'P^^ing and interlock the curves and slopes shall be Se^to tE"^ ^^f^- Units placed on ^ ^^"^then spread laterally 3.04 Installation of Grass X 8 ) must be reseeded Immediatelv 9!!?^ " '^^er than 20 cm x 20 cm m- B' n^Sftte^"' o&ptS f-'iii^ed a"nd k™t'' 3.05 Protection 'y:^^SZZt^^:;^:,^^^^^ '--iiauon method., ^^"f • f°r a period of 4.0 eCtaIr '™ below the Grasspave2 units. ' ' ""^'^ ^'^^ '"""t system has penetrfted 3.06 Cleaning aajatntrSS "nits where three or more replacement Is apparent. ^ ' ™"^'alling as specifled, so no evidence of .he -rfS^e of work and upon completion of an.damagetoad.ce„tma.e.alsa™dnu^S-r«^^ END OF SECTION - '"Visible t 50 CM (19.7") T f UNITSI2E-50CMX50CMX2SCM (20" X 20" XI") ™ AVAILABLE IN 9 STANDARD ROLL SIZES UNITWEIGHT-510GRAMS(18O2) STREMrru . '^'^ (^-5 POUNDS) STRENGTH-402 KG/CM/5720 PSI) COLOR - BLACK (STANDARD) ELAN GRASSPAVE2 SQUARES ADJACENT GRASSPAVE2 SQUARES SEE ENURGEMENT BELOW HYDROGROW MIX BELOW RING SUPPLIED FREE BY MANUFACTURER •R-NGS FILLED WITH CONCRETE SAND(CLEAN, SHARP SAND) ENLAR^FMPfviT ii " COMPACTED SANDY GRAVEL II ROAD BASE-6 INCHES TO , 2 INCHES ^,°^P™ OF BASE COURSE TO BE ^1DETERMINED BY ON-SITE ENGINEER) COMPACTED SUBGRADE 95% MODIFIED PROCTOR DENSITY SECUON TO') AS''?n°o^n^ASS 6 MM U J ABOVE TOP OF RING '^R;5SSPAyE2 ATTACH WITH SNAP-FIT FASTENERS ROOT MASS TO FILL GRASSPAVE2 COMPACTED SANDY GRAVEL BASE COURSE NOT TO SCALE Invisible Structures, Inc. GPDET.DWG TYPICAL GRASSPAVE2 DETAIL 1 OF 1 1600 Jackson St., Ste. 3 lo"^ 800-233-1510 OR 303-233-8383 FAX: 800-233-1522 OR 303-233 8282 www.inv,siblestr.ictures.com rev. 08/04 Page 1 of2 Structures, inc state of the Earth lmovation ' 5^ J» Oro.n Tech Specs Data Sheet Grasspave2 Brochure Competitive Advantages Design Details Materia] Safety Product Data Sheet-Grasspave^ Project Profiles Hydrogrow 0m Large Rolls Roll Sizes Installation (Flash) Sand Root Zone are Gr3ss ^ Product Description The Features and Benefits • Allows 100% grass coverage . Made fron, 100"/„ post-consumer recycled plastic High strength to weight load-bearing capacity • Supports vehicular and pedestrian traffic O parking lots O firelanes O overflow and event parking o golf cart paths O residential driveways o maintenance and utility access • Maximum porosity O zero to low runoff ^ free air/water movement • Permits more trees in parking areas http://www.invisiblestructures.com/GP2/gr, asspave_data.htm Page 2 of2 O cooler site O greater oxygen O removes air pollutants O can preserve existing trees • Helps meet "Green Coverage" codes • Fast, low-cost installation • Competes in cost with asphalt paving O no gutter and drain system needed o no added land required for detention facilities O lower life cycle costs Specifications Strength-5720 psi (402 kg/cm2) Color - Black Resin - 100% recycled HDPE (standard) Size - 9 roll sizes from 10 m^m'V IT 1 N -. om 10 m (3.3 x 33 long) to 125 m^ (8.2' x 164' long) Design - US Patent #5,250,340 Ordering or e-mail. http://www.invisiblestructiires.coni/GP2/grassp. ave data.hfm Page 1 of 1 Structures,.r.c Sf^t<^ of the Earth Innovation ' Tech Specs Data Sheet Grasspave2 Brochure Competitive Advantagi Design Details ;es Project Profiles Material Safety DatasSS Grasspave^ Grass Reinforcement System 25 January 1999 Effective Date Material Safety Hydrogrow ' pl?""' (Flash) S w Roll Sizes Sand Root Zone emit Invisible Structures, Inc 1597 Cole Blvd., Suite 310, Golden CO snani H«l..„,.r.H.,„.3.o..,,osHA„CS».c™.,„„,,„, """" •f-. COl ^ *„i«t Fl-l. p.ln. 4 n.„™u. LlmlB - No, Applicable. Spill, or Luks: Not Applicable. Beachrings2|Draincore2|GrassDav*.?.r^, ' ' ' • http://www.invisiblestructures.com/GP2/gras spave_safetv.htm Page 1 of2 ?,*''"f*"»'es,.„c state of the Earth Innovation * Oram Craax Tech Specs Data Sheet Grasspave2 Brochure Design Details^ Competitive Advantages Material Safety HydroGrow-Product Data Sheet 1- Product Names Project Profiles ' Large RoIIs"^ Hydrogrow RQH sizes * Slops Installation (Flash) Sand Root Zone 2. Manufacturers H.-..wpo,.c.,l„.cpo,™er.„.or,,^„„,,„_,,,^^,„^^ arructures. Inc., Golden, Colorado 80401 Phone: 800-233-1510 Intemational: (USA) 303-233-8383 FAX: (USA) 303-233-8282 Humate products are made bv TriP B„f« • Phone: 800-927-331. ' ""^ ' ^^"^^^ Avenue. Ch.no. California 917.0 USA Intemational: 909-590-1790 FAX: 909-590-3301 Material - o o u.r,.oc„.i„,.,,o„,„,_,,,, o Reduced ™,.pta,ing shock „d he.ifty ^ chc™»y. o More moisture retained in sandy soils o O Greater porosity for heavy clay soils o o Quick establishment of new plants, o 0«.»e3,sod,.sp,e.d lO.s.r .«0sTo.cr..se..„p,.ci„,Ot.ssp.ve^„.,.. I http://www.i„vi5ibIe5tructures.conVGP2/hg data.htm Page 2 of2 C^W(Seed)-Must„otbeusedwhereseedca„eontactmixdirectly.keep,".,^ New Turf & Gardens (sandv , . "^^ "^''^ogrow Outdoor Planters -TlbSc^M" V ^"-^"'^eep. -^*.*ons...r http://www.i„visiblestructures.com/GP24s^, data.htm