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HomeMy WebLinkAboutCT 03-06; BLACKRAIL 16; STORMWATER MANAGEMENT PLAN; DWG 434-9A; 2006-08-03STORMW ATER MANAGEMENT AND MAINTENANCE PLAN (SWMP) SWMP 12-18 FOR BLACK RAIL 16 CARLSBAD, CALIFORNIA CT03-06 PREPARED BY EXCEL ENGINEERING 440 State Place Escondido, CA . 92029 (760) 745-8118 August 3, 2006 • . 0 THIS STORM WATER MANAGEMENT PLAN HAS BEEN PREPARED UNDER THE DIRECTION OF THE FOLLOWING REGISTERED CIVIL ENGINEER. THE REGISTERED CIVIL ENGINEER ATTESTS TO THE TECHNICAL INFORMATION CONTAINED HEREIN AND THE ENGINEERING DATA UPON WHICH THE FOLLOWING RECOMMENDATIONS, CONCLUSIONS AND DECISIONS ARE BASED. , (ENGINEER'S SJGNA TURE) DATE INTRODUCTION 1. PROJECT DESCRIPTION I.I. PROJECT LOCATION TABLE OF CONTENTS 1.2. PROJECT SITE DESCRIPTION 1.3. WATERSHED CONTRIBUTION 2. APPLICABLE LAWS, REGULATIONS, POLICIES, AND REQUIREMENTS 2.1. CLEAN WATER ACT 2.2. STATE LAWS AND REGULATIONS 2.3. STATE IMP AIRED WATERBODIES 3. POTENTIAL EFFECTS TO THE WATER QUALITY ENVIRONMENT 3.1. BENEFICIAL USES 3.2. INLAND SURFACE WATERS 3.3. GROUNDWATER 4. CHARACTERIZATION OF PROJECT RUNOFF 4.1. STORM WATER QUALITY 4.2. TRIBUTARY DRAINAGE AREA 4.3. SITE HYDROLOGY 5. MITIGATION MEASURES (BMP's) TO PROTECT WATER QUALITY 5.1. POST CONSTRUCTION BMP's 6. MAINTENANCE STORMWATER MANAGEMENT PROGRAM 7. EDUCATIONAL BMP WITH SAMPLE REFERENCES FOR HOTEL GUESTS 8. REFERENCES 9. ATTACHMENTS (PART 1-SWMP) 9.1.1. ATTACHMENT I-VICINITY MAP 9.1.2. ATTACHMENT 2-CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD REGION MAP 9.1.3. ATTACHMENT 3 -STORM WATER REQUIREMENTS APPLICABILITY CHECKLIST 9.1.4. ATTACHMENT 4-2002 303(d) LIST 9.1.5. ATTACHMENT 5-WATER QUALITY STANDARDS INVENTORY DATABASE 9.1.6. ATTACHMENT 6-HYDROLOGIC UNIT MAP/DRAINAGE BASIN 9.1.7. ATTACHMENT 7-POST-CONSTRUCTION POLLUTANTS (PRIMARY AND SECONDARY POLLUTANTS) 9.1.8. ATTACHMENT 8 -POST-CONSTRUCTION BMPs 9.1.9. ATTACHMENT 9-ENHANCED TREATMENT CONTROL BMP SELECTION MA TRIX (U, L, M, H) 9.1.10. ATTACHMENT 10-STORMWATER 360 MEDIA FILTER UNIT 9.1.11. ATTACHMENT 11 -PROPERTY OWNER'S MANUAL 9.1.12. ATTACHMENT 12-SCHEDULE & COSTS FOR MAINTENANCE OF POST CONSTRUCTION BMP's,MAINTENANCE AND TRAINING FORMS 9.1.13. ATTACHMENT 13 -POST CONSTRUCTION BMPs PLANS I. PROJECT DESCRIPTION 1.1. PROJECT LOCATION The proposed development is located east of Black Rail Road between Poinsettia Lane and Corte Orchidia in the City of Carlsbad in the County of San Diego (see Attachment 1-Vicinity Map). 1.2. PROJECT SITE DESCRIPTION The subject site has an approximate area of 5.26 acres. The site is also identified as Assessor's Parcel Number 215-080-20,21 & 28. It is surrounded by developed and undeveloped land. The existing conditions of the proposed project site, consists primarily of gently sloping terrain with the highest point at roughly an elevation 3 81 located near the northwesterly corner of the property boundary. At the easterly property boundary a moderate to steep slope to the lowest point of the site, located near the northeasterly comer of the property, to roughly an elevation of 318. The project site is presently used for agricultural purposes, more specifically for the production of strawberries. Existing ilrainage of the site is facilitated by street flow along Black Rail Road, and by two existing natural tributaries for the eastern portion of the site. The two existing tributaries, herein described as tributary I and tributary 2, confluence with each other roughly 250 feet east of the easterly property boundary. For the purposes of this report tributary 1 is the northerly existing natural channel, and tributary 2 is the southerly existing natural channel. After joining, the two existing tributaries form one unnamed existing channel that ultimately discharges into Batiquitos Lagoon. The Existing tributaries 1 and 2 also have hand gravel bag check dams constructed off-site. The check dams appear to have been installed at uneven linear intervals varying in distance from twenty-five (25) to one hundred (100) feet. These check dams now serve as erosion control and facilitate storm water treatment. The gravel bags can detain storm water runoff to help settle out suspended solids and pollutants which will reduce the quantity of sediments to the downstream waters. The treatment they provide is only in the reduction of sediments and trash. The proposed project consists of a sixteen (16) unit single-family residential development. The project proposes the construction of a pub lie street, sixteen (16) graded pads suitable for construction of residential dwellings, and typical utilities anq improvements associated with residential developments; such as water, sewer, storm drain and dry utilities. The development of the property will change the land use from agricultural to single family residential, this change in land use will change the types of pollutants generated from the site. (See Section 4.1 for anticipated pollutants) However, the anticipated pollutants will be mitigated as part of this developments approval. This site is required by the SWRCB to reduce the amount of pollutants generated by the site to the MEP using post construction B:MP's of medium or high removal. The proposed project will facilitate drainage of the development site through two storm drain systems, which included a series of drainage swales and a brow ditch to address runoff from graded slopes and offsite run-on (which is not anticipated due to the existing topography). In addition to the drainage swales and brow ditches, the easterly storm drain system consisting of one type B cleanout, one type B-2 inlet, two D-41 energy dissipators, and associated storm drain piping. The westerly storm drain system consists of two drainage swales (one along the northerly property boundary and one along the southerly property boundary) and their associated curb outlets, and one cross gutter at the entrance to the proposed project site. The storm drain system will drain to a curb inlet, which will drain into a media filter treatment device. The storm drain system will ultimately discharge out into rock riprap and into the existing drainage course to the east of the project site. 3.89 acres of the total site acreage of 5.26 acres drains to and is treated by the proposed media filtration device. Another 0.60 acres of open space area (Lots 'A' & 'B') are comprised of existing and manufactured slopes that drain to the existing drainage tributaries to the east of the property. The remainder area of0.77 acres is comprised of the slopes along the backs ofall of the lots including the 5' private drainage easement, which drain to Black Rail Road through D-25 curb outlets or to rip rap at the eastern end of the site, and Lots 1 and 16, which drain to Black Rail Road. The 0. 77 acres and the 0.60 acres is untrc::ated runoff, which cannot all be collected at one drainage point to treat. 1.3. WATERSHED CONTRIBUTION Existing topography of the site shows that the majority of the stormwater runoff drains out of the property toward the easterly drainage tributary. A small portion on the west side of the site drains to Black Rail Road. As identified by the San Diego Basin Plan, the proposed project site drains to a San Diego coastal stream, specifically Batig_uitos Hydro logic Sub Area (904.51) that is within the San Marcos Hydrologic Area and the Carlsbad Hydrologlc Unit. This site is approximately 0.03% of the entire Batiquitos Sub Area watershed (20,158 acres). See also Attachment 6 -Hydrologic Unit Map/Drainage Basin for more details. The proposed project will not significantly alter the drainage pattern on the site. The surface water runoff discharge points will not divert from existing conditions. (Hydrology Study) This project will not present any potential threat to erosion. The project will institute erosion control measures during the construction stage and post construction stage. Please see the SWPPP for this project for the proposed construction BMP's. See section 5 of this report for the list of post construction BMP's associated with this project. Also, this project is not increasing peak runoff and all natural downstream fully vegetated channels are to be preserved to act as a BMP. Thus, all downstream properties will be protected and will not be impaired. See Section 4.3 for additional discussion on mitigation of site peak runoff. 2. APPLICABLE LAWS, REGULATIONS, POLICIES, AND REQUIREMENTS 2.1. CLEAN WATER ACT In 1972, the Federal Water Pollution Act (also known as the Clean Water Act (CWA]) was amended to provide that the discharge of pollutants to waters of the United States from any source point is unlawful, unless the discharge is in compliance with a NPDES (National Pollutant Discharge Elimination system) pe1111it. The 1987 amendments to the CW A added Section 402(p) (F. l .b. l) whish establishes a framework for regulating municipal and industrial storm water discharges under the NPDES program. 2.2. STATE LAWS AND REGULATIONS In California, the State Water Resources Control Board (SWRCB) administers the NPDES storm water-pe1111itting program. The SWRCB has established a construction general pennit that can be applied to most construction activities in the state. This general pemit for Sto1111 Water Discharges Associated with Construction Activity (General Permit) is described under the SWRCB..:. Water Quality Order 99-08-DWO. SWRCB have designated nine (9) Regional Water Quality Control Boards throughout the state. It is through these nine (9) regional control boards that the SWRCB enforces its regulations to most construction. (See Attachment 2 -California Regional Water Quality Control Boards). The City of Carlsbad has prepared a Jurisdictional Urban Runoff Management Plan as described in Section F and Hof the Municipal Storm Water Permit {NPDES Order No. 2001-01) issued by the San Diego Regional Water Quality Control Board on February 21, 2001. The City of Carlsbad had initiated implementation of the JURMP on February 21, 2002, and will use a continuous improvement and refinement strategy to identify changes to the JURMP through the life of the Permit. As per the Carlsbad SUSMP the following is the step-by-step elements of the development application plan review and permitting processes for storm water best management practice (BMP) requirements: 1. Determine applicable storm water BMP requirements. 2. Prepare and submit appropriate plans. 3. Determine adequacy of proposed plans. 4. Assure Implementation and maintenance of requirements. Step 1. Determine applicable storm water BMP requirements. To determine the applicable storm water (BMP) we have completed the "Storm Water Requirements Applicability Checklist" -see Attachment -3. Based on the information supplied on this form the following was established: Part A & B -Under this test our project was established to be subject to the "Priority Project Permanent Storm Water BMP Reqyirements" (SWMP). Part C -Under this test our project was established to be subject to Construction Storm Water BMP Performance Standards" and must prepare a "Storm Water Pollution Prevention Plan (SWPPP). Part D -Under this test our project was established to be "High Priority". Step 2. This step will be addressed in the following sections. Please see Attachment-9 of Part-I and see Appendix 4-Construction BMPs Plan of Part-2. Step 3. Is forthe city engineer's review of the adequacy of the plans. Step 4. Will be followed by this project to assure the city that the SWMP ( Post-Construction BMPs) and SWPPP (Construction BMPs) will be implemented and maintained. 2.3. STATE IMPAIRED WATERBODIES Since this project is subject to the priority project permanent BMP requirements, it is required to identify pollutant and conditions of concern. One source of this information is the state compiled list of impaired bodies of water, rivers and creeks. Some of these bodies of water are located in San Diego County. Please see Attachment 4-2002 303(d) List, for a complete list of these bodies of water and section 4 of this report. The project location and watersheds have been compared to the current published 303d list of impaired water bodies. Drainage from the site ultimately discharges to the Pacific Ocean Shoreline from the mouth ofBatiquitos Lagoon. The Pacific Ocean at several points along the San Diego Region shoreline is identified as being impaired by bacterial indicators; for this particular watershed the impairment has been located at Moonlight State Beach. This project will ultimately drain to an impaired (per the 303 (d) list, its pollutant is bacteria indicators) water body -(904.51 ), the Pacific Ocean shoreline, San Marcos HA. which is impaired for bacteria. However, the site will subject the stonn runoff with the appropriate BMPs to treat storm water before it is released to the water tributary east of the project that ultimately flows into Batiguitos Lagoon and then to the Pacific Ocean Shoreline. 3. POTENTIAL EFFECTS TO THE WATER QUALITY ENVIRONMENT This section is presented in connection with step 2 in regards with pollutants of concern in receiving waters. 3.1. BENEFICIAL USES The beneficial uses for the hydrologic unit are included in Tables 1.1 and 1.2. These tables were extracted from the Water Quality Control Plan for the San Diego Basin. The following are the meaning and descriptions of the acronyms used: MUN -Municipal and Domestic Supply: Includes uses of water for community, military, or individual water supply systems including, but not limited to, drinking water supply. AGR-Agricultural Supply: Includes uses of water for farming, horticulture, or ranching including, but not limited to, irrigation, stock watering, or support of vegetation for range of grazing. IND-Industrial Services Supply: Includes uses of water for industrial activities that do not depend primarily on water quality including, but not limited to, mining, cooling water supply, hydraulic conveyance, gravel washing, fire protection, or oil well re-pressurization. NAV -Navigation: Includes uses of water for shipping, travel, or other transportation by private, military, or commercial vessels. RECl -Contact Recreation: Includes uses of water for recreational activities involving body contact with water, where ingestion of water is reasonably possible. These uses include, but are not limited to swimming, wading, water-skiing, skin and SCUBA diving, surfing, white water activities, fishing, or use of natural hot springs. REC2 -Non-Contact Recreation: Includes the uses of water for recreational activities involving proximity to water, but not nonnally involving body contact with water, where ingestion of water is reasonably possible. These uses include, but not limited to picnicking, sunbathing, hiking, camping, boating, tide pool and marine iife study, hunting, sightseeing, or aesthetic enjoyment in conjunction with the above activities. COMM-Commercial and Sport Fishing: Includes the uses of water for commercial or recreational collection of fish, shellfish, or other organisms including, but not limited to, uses involving organisms intended for human consumption or bait purposes. AQUA-Aquaculture: Includes the uses of water for aquaculture or mariculture operations including, but not limited to, propagation, cultivation, maintenance, or harvesting of aquatic plants and animals for human consumption or bait purposes. WARM -Warm Freshwater Habitat: Includes uses of water that support warm water ecosystems including, but not limited to, preservation or enhancement of aquatic habitats, vegetation, fish or wildlife, including invertebrates. EST-Estuarine Habitat: Includes uses of water that support estuarine ecosystems including, but not limited to, preservation or enhancement of estuarine habitats, vegetation, fish, shellfish, or wildlife (e.g., estuarine mammals, waterfowl, shorebirds). MAR -Marine Habitat: Includes uses of water that support marine ecosystems including, but not limitea'to, preservation or enhancement of marine habitats, vegetation such as kelp, fish, shellfish, or wildlife (e.g., marine mammals, shorebirds). WILD -Wildlife Habitat: Includes uses of water that support terrestrial ecosystems including, but not limited to, preservation and enhancement of terrestrial habitats, vegetation, wildlife, (e.g., mammals, birds, reptiles, amphibians, invertebrates), wildlife water and food sources. BIOL -Preservation of Biological Habitats of Special Significance: Includes uses of water that support designated areas or habitats, such as established refuges, parks; sanctuaries, ecological reserves, or Areas of Special Biological Significance (ASBS), where the preservation or enhancement of natural resources requires special protection. RARE -Rare, Threatened, or Endangered Species: Includes uses of water that support habitats necessary, at least in part, for the survival and successful maintenance of plant or animal species established under state or federal law as rare, threatened or endangered. MIGR-Migration of Aquatic Organisms: Includes uses of water that support habitats necessary for migration, acclimatization between fresh and salt water, or other temporary activities by aquatic organisms, such as anadromous fish. SPWN -Spawning, Reproduction, and/or Early Development: Includes uses of water that support high quality aquatic habitats suitable for reproduction and early development offish. This use is applicable only for the protection of anadromous fish. SHELL-Shellfish Harvesting: Includes uses of water that support habitats suitable for the collection of filter-feeding shellfish (e.g., clams, oysters and mussels) for human consumption, commercial, or sport purposes. 3.2. COAST AL WATERS Under the Clean Water Act the state is required to specify appropriate water uses to be achieved and protected. The beneficial use designation of coastal waters of the state must take into consideration the use and value of water for public water supplies, protection and propagation of fish, shellfish and wildlife, recreation in and on the water, agricultural, industrial and other purposes including navigation. Inland Surface waters have the following beneficial uses as shown on Table 1.1 Carlsbad Hydrologic Unit (904.00), Batiquitos Lagoon (904.51) TABLE 1.1 Beneficial Uses of Coasta I Waters Hydro logic Unit N R Number N A E D V C 904.51 X * Excepted from Municipal o Potential Beneficial Use · x Existing Beneficial Use -Not Applicable 3.3. GROUND WATER R C B E 0 C M 0 2 M L X X E w R s I A T L R D E X X X M A M A Q R u G A R X X s s w H p A E w R L N M L Under the Clean Water Act the state is required to specify appropriate water uses to be achieved and protected. Ground waters in the San Diego Region can have as many as six designated beneficial uses including: (1) municipal and domestic; (2) agricultural; (3) industrial service supply; (4) industrial process supply; (5) ground water recharge; and (6) freshwater replenishment. None of these beneficial uses will be impaired or diminished due to the construction and operation of this project. Carlsbad Hydrologic Unit (904.00), Batiquitos (904.51) TABLE 1.2 Beneficial Uses for Ground Water Hydrologic Unit M A Number u G N R 904.51 0 0 * Excepted from Municipal o Potential Beneficial Use x Existing Beneficial Use -Not Applicable N D 0 4. CHARACTERIZATION OF PROJECT RUNOFF According to the California 1998 + 2002 303(d) List (Attachment 4 -2002 303(d) List) published by the San Diego Regional Water Quality Control Board, there is an impaired water body that is associated with this project. • The project location and watersheds have been compared to the current published 3 03 d list of impaired water bodies and the nearest impaired water body is the Pacific Ocean Shoreline; the impairment has been located at Moonlight State Beach. • This project is approximately 3 miles upstream from the nearest listed water body. Construction pollutants and residuals from this project will be removed on-site. The "Revision of the Clean Water Act Section 303(d) List of Water Quality Limited Segments" dated September 2005 lists additional impairments recommended for listing as follows: For Batiquitos Lagoon: Phosphorous For San Marcos Creek: DDE, Phosphorous, Sediment Bioassays-Chronic Toxicity, Freshwater 4.1. STORMWATERQUALITY Attachment 5-Water Quality Standards Inventory Database for Batiquitos Lagoon, which we obtained from the SWRCB website. This report gives the current condition on the overall drainage basin. · . For post-construction conditions, the following are some of the constituents that could affect water quality: • Sediment from on-site soils • Nutrients from fertilizer and pesticides associated with landscaping activities • Trash and debris from general site use • Oxygen demanding substances from decaying vegetation, animal waste and street litter • Oils and similar products associated with automobiles • Hydrocarbons from paved areas • Bacteria from animal waste or sewage spills. • Pesticides from landscaping areas All of these pollutants or residuals will be minimized, reduced to maximum extent practicable (MEP), by applying treatment control BMP's with a medium to high removal efficiency. These measures are discussed more in detail in the following sections. See Attachment 7 for a list of the primary and secondary pollutants affecting the site. 4.2. TRIBUTARY DRAINAGE AREA The site as described in the first part of this plan (see I .2 Project Site Description) 4.3. SITE HYDROLOGY A Hydrology & Hydraulics Study (see Attachment 7 -Hydrology Study) is presented with this report. Please note that the pre & post development water surface runoff were detennined in this study. The soil in this area is predominately characterized as hydrologic soil group D. The Pre- development flow rate taken from the drainage study is equal to 13.70 cfs. The Post-development flow rate taken from the study is equal to 14.38 cfs, an increase of0.68 cfs. The increase in flows from the pre-development to post-development conditions was anticipated based on the hydrology study for the tentative map. The outfalls for the drainage points are being designed with energy dissipaters to mitigate erosive velocities and to protect downstream properties. 5. MITIGATION MEASURES (BMP's) TO PROTECT WATER QUALITY To address water quality for the project site, BMP's will be implemented for the post construction condition. The level of effectiveness for the post construction BMP's is described on each fact sheet. Usually it is presented at the side bar of the title sheet. This side bar presents information on which BMP objectives apply targeted constituents with indication of how much impact the BMPs will have on the pollutants and implementation requirements. Attachment 2. -Enhanced Treatment Control BMP Selection Matrix (U, L, M, H) will give effectiveness of each BMP. This is presented here to show the removal efficiency of some of the post-construction BMP's that were used 5.1. POST CONSTRUCTION BMP's The process of developing BMPs can include structural and nonstructural practices. Usually, nonstructural and preventive BMPs can be more effective than structural measures. Types of post- construction BMPs are typically identified by the following categories: • Site design BMP's • Source control BMP's • Treatment control BMP's Enforcement of all post construction BMP's will be the responsibility of the homeowner's association for this subdivision through the CC&R's for the site, this includes all site design, source control, and treatment control BMP's. See Attachment 7 for a list of the primary and secondary pollutants affecting the site. · A. Site Design BMPs Site design BMPs address aspects of the project design to reduce the impacts of stormwater runoff. Site design BMPs includes practices that are typically nonstructural in nature to reduce stonnwater impacts off site. Some of these site design BMPs and how they will be included are discussed below. Minimize Impervious Footprints The site is presently raw land of 5 .26 acres with almost no man made existing impervious surface except for one single family home. The proposed road/street and building roofs will comprise approximately 2.6 acres. This is almost 50% relative to the entire site. The proposed open space area is approximately 0.60 acres. The site will be designed and developed minimizing the use of impervious area. The proposed road, sidewalks and driveways will be designed to meet minimum widths. Conserve Natural Areas The site is dedicating per the final map for the project 0.60 acres of open space. Approximately half of this open space area will be undeveloped natural terrain, as it exists today. (Lots 17 and 18) Use Natural Drainage Courses Although brow ditch will be used to catch sotne of the sheet flows toward the new manufactured slopes, these ditches will not necessarily change the drainage pattern of the site. These existing ditches are needed to protect the new slopes from erosion thereby ensuring their stability. Apart from these existing ditches the site will use all natural drainage courses available whenever possible. The brow ditches that drain to the east of the site discharge their flows to the existing tributary drainage course. The proposed storm drain system also discharges to this natural drainage course. Please see Attachment 14-Post-Construction BMPs Plans. Minimize Directly Connected Impervious Areas Rooftops from the proposed single family homes will discharge directly to lawn/landscaped areas before discharging to the proposed street or storm drain system. B. Source Control BMPs Source control BMPs will focus on nonstructural BMPs. Street Sweeping and Vacuuming Street sweeping scheduled at appropriate intervals (we recommend a minimum of monthly interval, however it is per the discretion of the homeowner's association to schedule this activity and to monitor the amounts of sediment/pollutants on the street, if a more frequent interval will be needed) can reduce pollutants that have built up over time and become deposited from vehicles, plants and other vegetations along sidewalks and islands. It is recommended that this BMP be implemented expeditiously or upon completion of paving construction of all internal drivewavs and the road. The following will be minimized: I. Trash and debris from general homeowners use, and from drivers & pedestrians 2. Sediments and soils contaminated with oils and similar products associated with automobiles Use Efficient Irrigation Systems & Landscape Design Site will comply with and integrate rain shutoff devices to prevent irrigation during precipitation consistent with the City of Carlsbad Landscape Manual. Landscaping of the slopes and other parts of the site will be incorporated into the plans. To expeditiously achieve plant establishment to reduce erosion, landscaping will consist of both native and non-native plants. The irrigation system will be closely monitored to reduce over irrigation _and thus protect the manufactured slopes from being destabilized due to over watering and over saturation of the soil. Maintenance of vegetated or landscaped areas (street sidewalks, street landscaped slopes) and other planted areas should be the responsibility of the owner or homemvner's association handling the property. The homeowner's association will develop a schedule and fees for maintenance when the project is turned over by the contractor/developer to them, which will be included within the projects CC&R's. Storm Drain Signage Storm drain inlets and access points to natural drainage courses will be marked to discourage illegal dumping, with markings indicating the receiving water by name. Specifically: I. All storm drain inlets and catch basins within the project area will have a tile or signage placed with prohibited language (such as: 'NO DUMPING -DRAINS TO PACIFIC OCEAN SHORELINE") 2. Signs and prohibited language and /or graphical icons,.which prohibit illegal dumping, must be posted at public access points along channels and creeks within the project area. 3. Legibility of tiles and signs must be maintained and tiles must be placed flush with the top of concrete to reduce tripping by pedestrians. Rip rap Riprap will be placed at the outlet of each of the brow ditches and storm drains system outfalls to reduce velocities and dissipate energy so no scour occurs. The physical feature at every outfall or drainage outlets will be designed accordingly so as to make them all function effectively~ Please see Attachment 8 -Post Construction BMP's for more details regarding these BMP's. Automobile Use In a residential neighborhood automobiles are primary utilized as means of transportation for the commuter. However, residential neighborhoods still see vehicular traffic of larger vehicles and including heavy duty trucks for the purpose of serving the residential pubiic. Through continued and infrequent vehicle trips into the residential neighborhood, automobiles and trucks have the potential of contributing oil, grease, antifreeze, hydraulic fluids, copper from brake dust, gasoline, diesel, and various other types of fuels. The RWQCB Order states that the following activities related to automobile use are prohibited; Wash water from the cleaning or power washing of gas stations, auto repair garages, or other types of service related operations can not be directly discharged into an MS4 storm system or receiving watercourse or water body. Cleaning or maintenance of any type of mechanical equipment, such as vehicles, concrete mixers, temporary toilets, wood working tools, paint or paint applicators, etc. that result in the discharge of wash water or pollutants into urban runoff. Wash water from non-pennanent cleaning operations such as mobile auto washing and detailing, steam cleaning, power washing, and carpet cleaning operations that discharge into an MS4 storm system or receiving watercourse or water body. Urban Pollutants/Urban Housekeeping In residential neighborhoods and developments, residents typically have in their possession several household products that contain a variety of toxins and pollutants. Through the use of such products there is a potential for the toxins and pollutants, possible constituents of the household products, to be discharged into receiving waters. In addition to contamination of urban runoff from the use of household products, organic matter, such as lawn clippings and leaves, also have the potential to increase the nutrient loading in urban rwioff. The RWQCB Order states that the following activities related to urban pollutants as related to the upkeep and maintenance ofresidential dwellings are prohibited: Discharges of wash water from power washing or cleaning of sidewalks, parking lots, streets, driveways, patios, outdoor restaurants, outdoor retail/commercial plazas, etc. Discharges of food processing/production wastes, such as grease, cellulose, trash, animal/fish body parts and fluids, etc. Discharges of spa, pool, or fountain water that contain chlorine/chloride, biocides, pH enhancers or buffers, or other chemicals Discharges of runoff or wash water from areas that house chemicals, fuels, grease, oils, hazardous materials/wastes, biological materials, trash, or yard wastes. Landscape irrigation, lawn and garden watering, and non-commercial washing of vehicles in a residential area are exempt from the RWQCB Order restrictions. BMPs Applicable to Individual Priority Project Categories Private Roads The majority of the street drainage will drain into a curb inlet in the cul-de-sac, which will contain a curb inlet filter. The water will then exit the curb inlet into a storm water media- filtering device. When it leaves the media-filtering unit it will exit out of the storm drain through rock riprap out into the natural tributary drainage course east of the site. C. Treatment Control BMPs Treatment control BMPs typically includes structural devices that remove or reduce pollutants in runoff. Attachment 2. -Enhanced Treatment Control BMP Selection Matrix shows pollutants of concern degree of efficiency capability (U, L; M .H) of each treatment control BMP categories. These BMPs are either volume-based or flow-based . The flow based criteria is applicable for both filtration devices and biofilter treatment control BMPS, while the volume based criteria is applicable for the extended detention basin. The sizing of the Post Construction Structural Treatment BMP's will comply with the volume/flow criteria per the California Regional Water Quality Control Board; San Diego Region Order WQ 2001-15 adopted November 15, 2001 and the San Diego Region, Tentative Order No. R9-2006-001 l. As required by the RWQCB and the County of San Diego, the project, depending on the type of BMP, will use one or both of the following numeric sizing criteria: • Volume based BMP's shall be designed to mitigate the volume of runoff from a 0.6" storm event or the runoff produced from a 24-hour 85th percentile storm event. • Flow based BMP's shall be designed to mitigate the maximum flow rate of runoff produced from a rainfall intensity of0.2" of rainfall per hour. Calculations for the treatment control BMP's are included in attachment 10. Using Media Filtration Units There is a small portion of flows entering onto the project from offsite drainage areas. This offsite drainage is to the north of the site and is intercepted by the proposed brow ditch along the northern boundary. All onsite flows will be treated to meet the new storm water requirements by using media filtration within the new storm drain system. It is recommended that filtration devices ( or their equivalent) shown on Attachment IO -Storm Water 3 60 Media Filtration, be used on the site. These units will remove sediments as well as treat the storm water by removing an acceptable level of the Total Suspended Solids (TSS), Total Petroleum Hydrocarbons (TPH), metals, . phosphorus and bacteria from untreated runoff. Some of these units can also be used for storage if necessary. This media filtration device will be used together with the curb inlets and pipe storm drain system. The system will be a flow based BMP and will be designed to mitigate the first flush flow. This first flush flow is described more explicitly above. Also these devices are designed to handle storm flows, which are greater than the 85th percentile, to enter the. storm drain system without causing flooding. Please see Attachment lQ-StonnWater 360 Media Filtration for information regarding the unit and manufacturer. Media filtration units: I. Stormwater 360 StormFilter &'xl 6' pre-cast with 12 cartridges. (perlite/zeolite media) To address the primary pollutant of bacteria. Also included in this attachment are technical information and test reports that show these units are capable of separating petroleum hydrocarbons and other pollutants of concern including the primary pollutant of concern bacteria, and a post construction bmp exhibit that shows the location of the proposed treatment unit. Please see Attachment .2. (U, L, M, H) for the pollutants that can be removed by this BMP. Using the StormFilter by Storm.water 360 Media filtration will be used clean the storrnwater for the site. Media filtration has medium removal efficiency for bacteria. All onsite flows will be treated to meet the new stormwater requirements. It is recommended that StormFilter by Stormwater 360 be used on the site. These units will remove sediments as well as treat the stormwater by removing an acceptable level of the Total Suspended Solids (TSS), Total Petroleum Hydrocarbons (TPH), metals, phosphorus and bacteria from untreated runoff. This StormFilter will be used together with the curb inlets and pipe storm drain system. The system will be a flow based BMP and will be designed to mitigate the first flush flow. This first flush flow is described more e~'Plicitly above. · Please see Attachment lQ -for information regarding the unit and manufacturer. Also included in this attachment are charts and other parameters use for calculating/designing the right unit required by the system. Please see Attachments .2. & lQ for the pollutant that can be removed by this BMP. 6.0 MAINTENANCE Maintenance will be under the guidelines as shown in the "STORMW ATER MAINTENANCE PLAN" by the County of San Diego DPW Land Development Guidelines, and the City of Carlsbad JURMP. The homeowner's association of the proposed development will eventually be responsible for the maintenance and inspection of the Post-Construction BMP's. An approved contractor will be used to pump or clean any inlet or inline treatment manholes of the trapped stormwater wastes. Said contractor will haul wastes to an approved disposal site. Stormwater sampling and monitoring will be the responsibility of the homeowner's association. They will also be responsible in determining the sources and locations of pollution if discovered during sampling and monitoring. The owners will need to assess an annual maintenance and inspection/monitoring fee for the upkeep of any Post Construction BMP's. Maintenance for the post construction BMP's are addressed under Attachment-12. For landscaping maintenance, the owner will monitor the compliance and maintenance of all vegetated areas as an efficient post construction BMPs. See also, Landscaping under Source Control BMP for more details. Attachment .U-Schedule & Costs of Maintenance for the Post-Construction BMP' s, is presented as a sample or guide only. It is the responsibility of the homeowner's association to devise its own schedule & costs for the maintenance of these BMP's. The maintenance of the BMP's will be required as part of the CC&R's for the subdivision, which will be reviewed by the City of Carlsbad and implemented by the homeowner's association. Also included in this attachment are information regarding the maintenance scheduling & form, and worker training & form. These infonnation and fonns will be part of the maintenance program for the BMP's for this project. 7.0 EDUCATIONAL BMP WITH SAMPLE MATERIALS FOR HOMEOWNERS We have provided sample educational materials in Attachment 12 -Property Owner's Manual, to give the future homeowner's association some ideas regarding storm water quality preservation, BMPs and government agencies responsible for the enforcement of this code. 8.0 REFERENCES • CITY OF CARLSBAD PUBLIC WORKS DEPARTMENT, STANDARD URBAN STORM WATER MITIGATION PLAN (SUSMP),.STORM WATER STANDARDS, April 2003 -A Manual for Construction & Pennanent Stonn Water Best Management Practices Requirements. • CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD, SAN DIEGO REGION, ORDER NO. 2001-01, NPDES NO. CAS010&75&-Waste Discharge Requirements for Discharges of Urban Runoff from the Municipal Separate Storm Sewer Systems (MS4), County of San Diego, The Incorporated Cities of San Diego County, and the San Diego Unified Port District • STATE WATER RESOURCES CONTROL BOARD, DIVISION OF WATER QUALITY, NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES), WATER QUALITY ORDER 99-08-DWQ-General Pennit for Storm Water Discharges Associated with Construction Activity (GENERAL PERMIT) • REVISIONS TO CONSTRUCTIONSTORMWATER GUIDANCE: DATED October 2, 2001 by-Department of Public Works, County of San Diego • CALIFORNIA STORM WATER BEST MANAGEMENT PRACTICE HANDBOOKS: DID: January, 2003 By -Camp Dresser and McKee Larry Walker Associates For Uribe and Associates Resources Planning Associates Stonnwater Quality Task Force • SAN DIEGO HYDROLOGY MANUAL by -Department of Public Works, County of San Diego • DESIGN -DATA HANDBOOK FOR CIVIL ENGINEERS, VOL I by -Elwynn E. Seelye • WATER QUALITY CONTROL PLAN, SAN DIEGO BASIN -REGION 9 by California Regional Water Quality Control Board, San Diego Region. September 8, 1994. • CAL TRANS STORM WATER QUALITY HANDBOOKS -CONSTRUCTION SITE BEST MANAGEMENT PRACTICES MANUAL by Caltrans, November 2000. ATTACHMENT 1-VICINITYMAP I I I I CITY MAP --- CD i ):,--~y 0 -;::.. CITY OF VISTA SIT£ , 't-'(::RTE ;-----,--r--ORCHID/A CITY OF ENCINITAS NOT TO SCALE TOPO! rnap pnnted on o 1/20/06 fi·orn "California. tpo" and "Untitled. tpg" 117°18.000' w 117°17.000' w 117°16.000' w ·'.:l'~i~:~ .. r~:-iJ}} 0 ' ir, (') -·-------~~·~--. i... I- z TNf/Ml< jl 13" 33 117°16.000' W .,f,. 117° 17 .000' VJ 117°16.000' w e.eaa:=::sesa==-sec.S=======aec:;:=ol MILE ~OJO fEET 01==:eeac:::c=aa::::::;-005aa=====ell»J MnERS Printed fmm TOPO! ©2000 Wilrlflower Produc1ions ( www.1opo .comj 'WGS84 117'' 15.000' W :--··-, .... V•./GS84 117°15.000' w r, C C "' er. 0 0 0 o:i 0 , \'0 M ATTACHMENT 2 -CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARDS NORTH COAST REGION (I) 5550 Skylane Blvd, Ste. A Santa Rose, CA 95403 (707) 576-2220 FAX: (707)523-0135 http://www.waterboards.ca.gov/rwqcb l SAN FRANC[SCO BAY REGION (2) 1515 Clay Street, Ste. 1400 Oakland, CA 94612 (510) 622-2300 FAX: (510) 622-2640 http://www.watcrboards.ca.gov/nvqcb2 CENTRAL COAST REGION (3) 895 Aerovista Place, Ste IO 1 San Luis Obispo, CA 9340 J (805) 549-3147 FAX: (805) 543-0397 http://www.waterboards.ca.gov/rwqcb3 LOS ANGELES REGJON (4) 320 W. 4<h Street, Ste. 200 Los Angeles, CA 90013 (213) 576-6600 FAX: (213) 576-6640 http://www.waterboards.ca.gov/rwqcb4 CENTRAL VALLEY REGION (5S) I I 020 Sun Center Dr., #200 Rancho Cordova, CA 95670-6114 (916) 464-3291 FJI.X: (916) 464-4645 http:,vww. wnterboards.ca.gov/rwqcb5 FRESNO BRANCH OFFICE (SF) 1685 E St. Fresno, CA 93706 (559) 445-5116 FAX: (559) 445-5910 http://www. waterboards. ca.gov/nvqcb5 REDDING BRANCH OFFICE (SR) 415 Kno lie rest Drive, Ste. 100 Redding, CA 96002 (530) 224-4845 FA,'(: (530) 224-4857 http://www. watcrboards .ca. gov/rwqcb5 LAHONTAN REGION(6 SLT) 2501 Lake Tahoe Blvd. South Lake Tahoe, CA 96150 (530) 542-5400 FAX: (530) 544-2271 http://www.waterboards.ca.gov/rwqcb6 vrCTORVILLE OFFICE (6V) 14440 Civic Drive, Ste. 200 Victorville, CA 92392-2383 (760) 241-6583 FAX: (760) 241-7308 http://www.watcrboards.ca.gov/rwqcb6 COLORADO RIVER BASlN REGION (7) 73-720 Fred Waring Dr., Ste. JOO Parm Desert, CA 92260 (760) 346-7491 FP.X: (760) 34!-6820 http://www. wntcrboards. ca.gov/nvqcb7 S/\NTA ANA REGION (8) California Tower 3737 !\fain Street, Ste. 500 Riverside, CA 9250!-3339 http://www.waterbonrds.ca.gov/rwqcb8 SAN DIEGO REGION (9) 9174 Sky Park Court, Ste. I 00 San Diego, CA 92123-4340 (858) 467-2952 FAX: (858) 571-6972 http://www.waterboards.ca.gov/rwqcb9 STATE OF CALTFORNli1. Arnold Schwarzenegger, Governor CALIFORNIA ENVIRONMENTAL PROTECTION AGENCY Teny Tamminen, Secretary STATE WATER RESOURCES CONTROL BOARD Arthur BaggettJr., Chairrnnn ATTACHMENT 3-STORM WATER REQUIREMENTS APPLICABILITY CHECKLIST Storm Water Standards 4/03/03 VI. RESOURCES & REFERENCES APPENDIX A STORM WATER REQUIREMENTS APPLICABILITY CHECKLIST Complete Sections 1 and 2 of the following checklist to determine your projects permanent and construction storm water best management practices requirements. This form must be completed and submitted with your permit application. Section 1. Permanent Storm Water BMP Requirements: If any answers to Part A are answered "Yes," your project is subject to the "Priority Project Permanent Storm Water BMP Requirements," and "Standard Permanent Storm Water BMP Requirements" in Section Ill, "Permanent Storm Water BMP Selectic:1 Procedure" in the Storm Water Standards manual. If all answers to Part A are "No," and any answers to Part B are "Yes," your project is only subject to the "Standard Permanent Storm Water BMP Requirements". If every question in Part A and B is answered "No," your project is exempt from permanent storm water requirements. P rtA D t a e ermme p . ·t p . t p noncv roiec ermanen t St orm Wt BMP R a er t equ1remen s. Does the project meet the definition of one or more of the priority project Yes Nc.j cateoories?" 1. Detached residential development of 10 or more units X 2. Attached residential development of 10 or more units )( 3. Commercial development oreater than 100,000 square feet >< 4. Automotive repair shop -,..::·. 5. Restaurant )( 6. Steep hillside development qreater than 5,000 square feet )<: 7. Project discharoinq to receivinq waters within Environmentally Sensitive Areas )'( _ i 8. Parking lots greater than or equal to 5,000 fr' or with at least 15 parking spaces, and ~· potentially exposed to urban runoff ! I 9. Streets, roads, highways, and freeways which would create a new paved surface that is ·x 5,000 square feet or oreater " Refer to the definitions section in the Storm Water Standards for expanded definitions of the priority oroiect cateoories. Limited Exclusion: Trenching and resurfacing work associated with utility projects are not considered priority projects. Parking lots, buildings and other structures associated with utility projects are priority projects if one or more of the criteria in Part A is met. If all answers to Part A are "No", continue to Part B. 30 Storm Water Standards 4/03/03 PrtBDt a e ermine St d d P an ar Does the project propose: ermanen t St orm Wt R a er t equ1remen s. 1. New impervious areas, such as rooftops, roads, parking lots, driveways, paths and sidewalks? 2. New oervious landscape areas and irrigation systems? Yes No X I )< I 3. Permanent structures within 100 feet of anv natural water bodv? "?<... 4. Trash storage areas? V -- 5. Liquid or solid material loading and unloading areas? x 6. Vehicle or equioment fuelinq, washinq, or maintenance areas? )(. 7. Require a General NPDES Permit for Storm Water Discharges Associated with )( Industrial Activities (Except construction)?* 8. Commercial or industrial waste handling or storage, excluding typical office or >< household waste? 9. Any grading or ground disturbance during construction? --....,,,· 10. Anv new storm drains, or alteration to existinq storm drains? :;<. *To find out if your project is required to obtain an individual General NPDESPermit for Storm Water Discharges Associated with Industrial Activities, visit the State Water Resources Control Board web site at, www.swrcb.ca.qov/stormwtr/industrial.html Section 2. Construction Storm Water BMP Requirements: If the answer to question 1 of Part C is answered "Yes," your project is subject to Section IV, "Construction Storm Water BMP Performance Standards," and must prepare a Storm Water Pollution Prevention Plan (SWPPP). lf the answer to question 1 is "No," but the answer to any of the remaining questions is "Yes," your project is subject to Section IV, "Construction Storm Water BMP Performance Standards," and must prepare a Water Pollution Control Plan (WPCP). If every question in Part C is answered "No," your project is exempt from any construction storm water BMP requirements. !f any of the answers to the questions in Part C are "Yes," complete the construction site prioritization in Part D, below. p art C D . etermme C onstruct1on Ph ase s torm w ater R t equ1remen s. Would the project meet any of these criteria during construction? Yes No 1. Is the project subject to California's statewide General NPDES Permit for Storm Water x Discharges Associated With Construction Activities? 2. Does the project propose gradinQ or soil disturbance? >( 3. Would storm water or urban runoff have the potential to contact any portion of the x construction area, including washing and staging areas? 4. Would the project use any construction materials that could negatively affect water X quality if discharged from the site (such as, paints, solvents, concrete, and stucco)? 31 Storm Water Standards 4/03/03 Part D: Determine Construction Site Priority In accordance with the Municipal Permit, each construction site with construction storm water BMP requirements must be designated with a priority: high, medium or low. This prioritization must be completed with this form; noted on the plans, and included in the SWPPP or WPCP. Indicate the project's priority in one of the check boxes using the criteria below, and existing and surrounding conditions of the project, the type of activities necessary to complete the construction and any other extenuating circumstances that may pose a threat to water quality. The City reserves the right to ~djust the priority of the projects both before and during construction. [Note: The construction priority does NOT change construction BMP requirements that apply to projects; al! construction BMP requirements must be identified on a case-by-case basis. The construction priority does affect the frequency of inspections that will be conducted by City staff. See Section IV.1 for more details on construction BMP requirements.] ·g AJ High Priority 1) Projects where the site is 50 acres or more and grading will occur during the rainy season 2) Projects 5 acres or more. 3) Projects 5 acres or more within or directly adjacent to or discharging directly to a coastal lagoon or other receiving water within an environmentally sensitive area Projects, active or inactive, adjacent or tributary to sensitive water bodies 0 BJ Medium Priority 1) Capital Improvement Projects where grading occurs, however a Storm Water Pollution Prevention Plan (SWPPP) is not required under the State General Construction Permit (i.e., water and sewer replacement projects, intersection and street re-alignments, widening, comfort stations, etc.) 2) Permit projects in the public right-of-way where grading occurs, such as installation of sidewalk, substantial retaining walls, curb and gutter for an entire street frontage, etc. , however SWPPPs are not required. 3) Permit projects on private property where grading permits are required, however, Notice Of Intents (NOls) and SWPPPs are not required. D CJ Low Priority 1) Capital Projects where minimal to no grading occurs, such as signal light and loop installations, street light installations, etc. 2) Permit projects in the public right-of-way where minimal to no grading occurs, such as pedestrian ramps, driveway additions, small retaining walls, etc. 3) Permit projects on private property where grading permits are not required, such as small retaining walls, single-family homes, small tenant improvements, etc. 32 ATTACHMENT 4-2002 303(d) LIST (See sheet 7) & REVISION OF THE CLEAN WATER ACT SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS SEPTEMBER 2005 9 R 9 E 9 R 9 E 9 E 2002 CW A SECTION 303(d) LIST OF WATER QUALITY LINIITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD Agua Hcdionda Creek 90431000 Total Dissolved Solids Low 7 Miles Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source Agna Hcdion,la I.agnon 90431000 Bacteria Indicators Low 6.8 Acres l\onpoint/Point Source Sedimentation/Siltation Low 6.8 Acres Nonpoint/Point Source Aliso Creek 901BOOO Bacteria Indicators Medium 19 Miles Urban Runoff/Storm Sewers Unknown point source Nonpoint/l'oint Source Phosphorus Low 19 Miles Impairment lncated at lower 4 miles. Urban Runoff/Storm Sewers Unknown Nonpoint S011rr.c Unknown point source Toxicity Low 19 Miles Urban Runoff/Storm Sewers. Unknown Nonpoint Source Unknown point source Aliso Creek (month) 90113000 Bacteria Indicators Medium 0.29 Acres Nonpoint/Point Source Bul'na Vista Lagoon 90421000 Bacteria lnd.icators Low 202 Acres Nonpoint/Point Source Nutrients Lon' 202 Acres Estimated sl'ze of impairment is I 50 acres located in upper portion of lagoon. Nonpoint/Point Source Sedimentation/Siltation Medium 202 Acres Nonpoint/Point Source Page I of 16 Appro,•cd by USEPA: .lu(v 2003 9 R 9 R 9 II 9 E 2002 C\VA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD Chollas Creek 90822000 Bacteria Indicators Medium 1.2 Miles Nonpoint/Point Source C•dmium High 1.2 Miles Nonpoint/Point Source Copper High 1.2 Miles Nonpoint/Point Source Diazinon High 1.2 Miles Nonpoint/Poinl Source Lead High 1.2 Miles Noupoinf/Point Source Zinc High 1.2 Miles Nonpoint/Point Source ClnYCrdnle Creek 90532000 Phosphorus Low 1.2 Miles Urban Runoff/Storm Scwer.s Unknown Nonpoint Source Unknown point source Total Dissoh·cd Solids Low 1.2 Miles Urban Runoff/Storm Sewers Unknown Nonpoint Sour-cc Unknown point source Dana Point Harbor 90114000 Bacteria Indicators Medium 119 Acres !111pairmc111 located at Ba/,y Beach Urban Runoff/Storm Sewers Marinas and Recreational Boating Unknown Nonpoint Source Unltnown point source Famosa Slough Hll(I Channel 90711000 Eu trophic Low 32 Acres Nonpoint Source P"ge 2 of 16 Appro,·cd by USEPA: .!11/)' 2003 i}\1:K:: 2004 2004 2002 2004 2004 9 R 9 R 9 R 9 L 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LllVIITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD Felicita Creek 90523000 Total Dissolved Solirls Low 0.92 Miles Agricultural Return Flows l:rbnn Runoff/Storm Sewers Flow Regulation/Morlification Unknown Nonpoint Source Unknown point source Forester Creek 90712000 ]<ecal Coliform Medium 6.4 Miles lmpnirmcnt Located at lower 1 mile. Urban Runoff/Storm Sewers Spills Unknown Nonpoint Source Unknown point source pH Low 6.4 Miles Impairment Located at upper 3 miles. Industrial Point Sources Habitat Modification Spills Unknown Nonpoint Sourre Unknown point source Total Dissolwd Solids Low 6.4 Miles !mpainncn/ Located al lower I mile. Agricultural Return Flo"·s Urban Runoff/Storm Sewers Flow Regulation/Modification Unknown Non point Source Unknown point source Green Valley Creek 90511000 Sulfates Low 1.2 Miles Urban Runoff/Storm Sewers Natural Sources Unknown Non point Source Unknown point source Guajome Lake 90311000 Eutrophic Low 33 Acres Nonpoint/Point Source Page 3 of 16 Appro,w! hy USEPA: .,,,~,· 20()3 9 L R 9 E 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD Hodges, Lake 90521000 Color Low 1104 Acres Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source Nitrogen Low 1104 Acres Agriculture Dairies Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source. Phosphorus Low 1104 Acres Agriculture Dairies Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source Total Dissol•,cd Solids Low 1104 Acres Agricultural Return Flows Urban Runoff/Storm Sewers Flow Rcgulatiou/Morlification Natural Sources Unknown Nonpoint Source Unknown point source Kit Carson Creek 90521000 Total Dissolnrl Solids Low 0.99 Miles Agricultural Return Flows Urban Runoff/Storm Sewers Flow Regulation/Modification Unknown Nonpoint Source Unknown point source Lorna Alta Slough 90410000 Bacteria Indicators Low 8.2 Arr-es Nonpoint Source Eutrophic Low 8.2 Acres Nonpoint Source Page 4 of 16 Appro1·<'d by USEl'A: J11~1· 2003 9 E 9 B 9 R 9 C 9 C 9 C 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LUvlITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD Appro,·ed by USEPA: July 1003 Los Pen"squitos Lagoon Mission Bay Murrieta Creek Pacific Ocean Shoreline, Aliso lrlSA Pacific Orc"n Shoreline, Buena Vista Creek HA Pacific Ocean Shoreline, Dano Point HSA 90610000 90640000 90252000 90113000 90421000 90114000 Sedimentation/Siltation Low 469 Acres Nonpoint/Point Source Bacteria Indicators Medium 2032 Acres !mpoirmcn/ located along entire bay shoreline. Nonpoint/Point Source Eutrophic Low 2032 Acres Estimated area of impairment of0.5 acres located at mouth of Rose Creek and 0.5 acres located at 1110//th of Te('()lo/e Creek. Nonpoiut/Point Source Lead Low 2032 Acres EstimatC'd area offmpairmc11t of0.5 acres located at mouth of Rose Creek and 0.5 acres located at mouth (if'Tecolote Creek. Phosphorus Bacteria Indicators Nonpoint/Point Source Urban Runoff/Storm Sewers Unknown '.\:onpoint Source Unknown point source Low Medium !111pair111cnt located al Laguna Beach at Lagunita Place I Blue Lagoon Place, Aliso Beach. Noopoint/Point Som-cc Bacteria Indicators Low 12 Miles 0.65 Miles 1.2 Miles lmpair111cnt located at Buena Vista Creek, Car/shad City Beach al Carlsbad Village Drive, Car/shad State Beach a/ Pine Avenue. Nonpoint/Point Source Bacteria Indicators Medium 2 Miles Impairment located at Aliso Beach at West Street, Aliso Beach at Table Rock Dri,,e, 1000 Steps Beach at Pac/fie Coast Hwy (Hospital, 9/h Ave). Salt Creek (large outlet), Salt Creek Beach al Salt Creek service road, Salt Creek Beach at Dana Strand Road. Nonpoint/Point So·,rre Page 5 of 16 9 C 9 C 9 C 9 C 9 C 9 C 9 C 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD Ap111·01·etl hJ USFPA: .July 1003 Pacific Ocean Shoreline, Escondido Creek HA Pacific Ocean Shoreline, Laguna Beach USA Pacific Ocean Shoreline, Loma Alta HA Pacific Ocean Shoreline, Lowe.· San Juan HSA Pacific Ocean Shoreline, Miramar Reservoir HA Pacific Ocean Shoreline, San Clm,entc HA Pacific Ocean Shoreline, San Diego HU 90461000 90112000 90410000 90120000 90610000 90130000 90711000 Bacteria Indicators Low 0.44 Miles Trnpah·ment located at San Elijo Lagoon outlet. Nonpoint/Point Source Bacteria Indicators l\1crlium 1.8 Miles lmpoirmcnt located(]{ Moin Laguna Beach, Laguna Beach at Ocean Avenue, Laguna Beach al Laguna Avenue, Laguna Beach at Cleo Street, Arch Cove at B/r,chird Canyon Road, Laguna Beach at Dumond Drive. Nonpoint/Point Source Bacteria lndiicators Impairment localed at Loma Alla Creek Mouth. l\onpoint/Point Source Bacteria Indicators Low 1.1 Miles Medium 1.2 Miles Impairment lncatcd at North Beach Creek, San Juan Creek (large outlet), Capistrano Beach, South Capistrano Beaeh at Beach Road: Nonpoint/Point Source Bacteria Indicators Low Impairment located at Torrey Pines State Beach at Del Mar (A11dcrso11 Canyon). Bacteria Indicators Urban Runoff/Slorm Sewers Unknown Nonpoint Source Unknown point soun,e Medium 0.39 Miles 3.7 Miles Impairment located at Poche Beach (large outlet), Ole Hanson Beach Club Beach al Pico Drain, San Cleme11/e City Beach al El Portal St. Stairs, San Clemente City Beach at Mariposa St., San Clemente City Beach al Linda Lane, San Clemen le City Beach at South Linda Lane, San Clemente City Beach at Lifeguard Headquarters, Under San Clemente Municipal Pier, San Clemente City Beach al Trafalgar Ca11yon (Trafalgar Ln.), San Clemente S/are Beach al Riviera Beach, San Clemente Stale Beach at Cypress Sho,·es. Non point/ Point Source Bacteria Indicators Medium 0.37 Miles Impairment located at San Diego R;ver lvfmah (akn Dog Beach). Nonpoint/Point Source Page 6 of 16 C 9 C 9 C 9 C 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD Pacific Ocean Shoreline, San Dirquito JIU l'acific Ocean Shoreline, San .Joaquin Hills IIS/1. Pacific Ocean Shoreline, San Lnis Rey Hll 90511000 90111000 90311000 Bacteria Indicators Low Impairment located at San Dieguito Lagoon Mouth, Solano Beach. Nonpoint/Point Source -;•,-:-·,' Bacteria Indicators Low Impairment located al Carneo Cove at ln·i11e Cove Dr./Riviera 1Vay, Heisler Park-North Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source Jlaetcria Indicators Low Impairment lncated at Son Luis R,ey R;ver Mouth. Nonpoint/Pnint Source 0.86 Miles 0.63 Miles 0.49 Miles Approved by USEPA: July 2003 -9 --'T--· Pacific ric~an ~~oi-rli~c, S~~ Marco~ HA '\ l 9 C Pacific Ocean Shoreline, Scripps HA 90630000 9 C Pacific Ocean Shoreline, Tijuana Hll 91111000 9 R Pinc Valley Creek (Upper) 91141000 Bacteria Indicators Low 0.5 Miles Impairment /neared at Moonlight State Beach. Nonpoint/Point Source Bacteria InOicntors Medium 3.9 Miles Impairment located at La Jolla Shores Reach al El Pasco Grande, La Jolla Shores Beach at Caminita Del Oro, La Jolla Shores Beach at Vailecitos, La Jo/lo Shores Beach at Ave de la Playa, Caso Beach (f'hildrcm Pool), South Casa Beach at Coast Blvd., Whispering Sands Beach at Ravina St., Windansca Beach at Vista de la Playa, Windanseo Beach of Bonair St., Windansca Beach at Playa de/ Norte, Windansca Beach at Palomar Ave., Tourmaline Su,f Park, Pacific Beach at Grand Ave. Nonpoint/Point Source Bacteria Indicators Low Impairment /nr:ated Ji-nm the border, extending north along the shore. Entcrococci Page 7 of 16 Nonpoint/Point Source ' e••·· Medium Grazing-Related Sources Concentrated Animal Feeding Operations (permitted, point s,>urce) Transient cncampmrnts 3 Miles 2.9 Miles l ! 9 R 9 R 9 B 9 B 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD Prima Dcshrchn Creek 90130000 Phosphorus Low 1.2 Miles Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source Turbidity Low 1.2 Miles Urban Runoff/Storm Sewers Unknown :'llonpoint Source Unknown point source Rainbow Creek 90222000 Nitrogen High 5 Miles Agricultural Return Flows Other Urban Runoff Nurseries Onsite Wastewater Systems (Septic Tanks) Nonpoint/Point Source Phosphorus High 5 Miles Agricultural Return Flows Other Urban Runoff Nursrrics Onsitc \Vastewatcr Systems (Septic Tanks) Nonpoint/Point Source San Diego Bay Shoreline, 32nd St San Diego 90822000 Naval Station Bcnthic Communily Effects Medium 103 Acres Nonpoin!/Point Source Sedimrnt ToxicitJ' Medium 103 Acres Nonpoint/Point Source San Diego Bay Shoreline, between Sampson 90822000 and 28th Streets Copper High 55 Acres Nonpoint/Point Source Mercury High 55 Acres Nonpoint/Point Sourr.e PAHs High 55 Acres Nonpoint/Point Source Page 8 of 16 Approved by USEPA: .!t1(1• 2003 2003 2003 2003 2003 2003 9 C 9 B 9 C 9 B 9 B 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD PCBs High 55 Acres Non point/Point Source Zinc High 55 Acres Nonpoint/Point Source San Diego Bay Shoreline, Chuls Vista 90912000 Marina Bacteria Indicators Low 0.41 Miles Urban Runoff/Storm Scwcn Marinas and Recreational floating Boatyards Boat Discharges/Vessel Wastes San Diego Bay Shoreline, Downtown 90821000 i\nrhorngc Benthic Community Effects Medium 7.4 Acres Nonpoint/Point Source Sediment Tm;icity Medium 7.4 Acres Non point/Point Sonne San Diego Bay Shoreline. G Street Pier 90821000 Bacteria Indicators Low 0.42 Miles Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source San Diego Bay Shoreline, near Chollas Creek 90822000 Benthic Community Effects Medium 15 Acres Nonpoint/Point Source Sediment Toxicity Medium 15 Acres Nonpoint/Point Source San Diego Bay Shoreline, nc•r Coronado 90822000 Bridge Benthic Community Effects Medium 37 Acres Nonpoint/Point Source Sediment To](icity Medium 37 Acres Includes Crosby Street/Cesar Chavez Park area, that will receive additional monitoring. Nonpoint/Point Source Par;e9ofl6 Apfi1·01•('(/ by l!SEPA: Ju(v 2003 2003 2003 9 Jl 9 B 9 B 9 B 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD San Diego Bay Shoreline, near sub base 90810000 Benthic Community Effects Medium 16 Acres Nonpoint/Point Source Sediment Tm,icity Medium 16 Acres Nonpoint/Point Source ., -••-r ----- San Dicg-o Bay Shoreline, near Switzrr Creek 90821000 Chlordane Medium 5.5 Acres Urban Runoff/Storm Sewer., Other Boatyards Nonpoint/Point Source Lindane Medium 5.5 Acres Urban Runoff/Storm Sewers Other Boatyards l\onpoint/Point Source PAIis Medium 5.5 Acres Urban Runoff/Storm Sewers Other Boatyards Nonpoint/Point Source San Diego Ray Shoreline, North of 24th 90832000 Street Marine Terminal Benthic Community Effects Medium 9.5 Acres Nonpoint/Point Source. Sediment Toxicity Medium 9.5 Acres Nonpoint/Point Source San Diego Bay Shoreline, Seventh Street 90831000 Channel Benthic Community Effects Medium 9 Acres Nonpoinl/Point Source Sediment Toxicity Medium 9 Acres Nonpoint/Point Source Page JO of 16 Approi·ed hy USEPA: J11{1• 2003 9 C 9 C 9 B 9 B 9 R 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD San Diego Bay Shoreline, Shelter Island Shoreline Park San Diego Bay Shoreline, Tidrlands Park San Diego Jfay Shoreline, Vicinity of B St and Broadway Piers San Diego Bay, Shelter Island Yacht Ilasin San Diego River (Lo,YCr) 90810000 91010000 90821000 90810000 90711000 Bacteria lndkators Bacteria Indicators Bacteria Indicators Unknown Nonpoint Source Unknown point source Unknown Nonpoint Source Unknown point source Low Low Low E,timated si;;e of impairment is 0.4 miles around the shnrc/inc of the bay. Benthic Community Effects Sediment Toxicity Copper, Dissolved Fecal Coliform Lower 6 miles. Low Dissolved Oxygen Urhan Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source Non point/Point Source N onpoint/Point Source Nonpoint/Point Source Urban Runoff/Storm Sewers Wastewater Nonpoint/Point Sou.-ce lmpain11C?nt trmu,c:cuds ar{jacent Calit'afcr wtarcshcd 90712. Page II ofl6 Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source Medium Medium High Low Low 0.42 Miles 0.38 Miles 9.9 Acres 9.9 Acres 9.9 Acres 153 Acres 12 Miles 12 Miles Appro1·cd by l!SEPA: J11(1' 2003 2003 9 E 9 R 9 E 9 R 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD San Elijo Lagoon 90461000 San Juan Creek 90120000 San Juan Creek (month) 90120000 San Luis Rey River 90311000 Phosphorus Tmpairmcnl transcends adjaccnf Ca/water watershed 90712. Total Dissolv,cd Solids Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source Tmpairmcnt iransccnds adjacent Ca/water ,rntcrshcd 90712. Bacteria Jndicato,·s Urban Runoff/Storm Sewers Flow Regnlation/Modifiration Natural Sources Unknown Nonpoint Source Unknown point source Estimated size of impainnenl is 150 acres. Nonpoint/Point Source Eu trophic Estimated si.ce of impairment is 330 acres. Nonpoint/Point Source Sedimentation/Siltation Eshmafcd size of impairment is 150 acres. Nonpoint/Point Source Bacteria Indicators l\onpoint/Point Source Bacteria Inducators Nonpoint/Point Source Chloride !111pair111cnl located al lower 13 miles. Page 12 of 16 Urban Runoff/Storm Sewers Unknown :'\1onpoint Source Unknown point source Low 12 Miles Low 12 Miles Low 566 Acres Low 566 Acres Medium 566 Acres Medium I Miles Medium 6.3 Acres Low 19 Miles ,lpprm•ed by USEPA: .lu~1· 2003 9 R 9 E 9 R 9 R 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD Total Dissolnd Solids Low 19 Miles Industrial Point Sources Agriculture-storm runoff Urban Runoff/Storm Sewers Surface Mining Flow Rcgulation/1\fodification Natural Sources Golf course acthitics Unknown Nonpoint Source Unknown point source Sandia Creek 90222000 Total Dissolved Solids Low 1.5 Miles lirbau Runoff/Storm Sewers Flow Regulation/Modification Natural Sources Unknown Nonpoint Source Unknown point source Santa Margarita Lagoon 9021 IOOO Eutrophic Low ZR Acres Nonpoint/Point Source Santa Margarita River (lipper) 90222000 Phosphorus Low 18 Miles Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source Scgunda Dcshccha Creek 90130000 Phosphorus Low 0.92 Miles Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source Turbidity Low 0.92 Miles Construction/Land Development Urban Runoff/Storm Sewers Channeliiation Flow Regulation/Modification Unknown Nonpoint Source Unknown point source Page 13 of 16 Appro,wf hy USEPA: .July 1003 9 L 9 R 9 R 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD Sutherland Rcscnoir 90553000 Color Low 561 Acres Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source Tccolotr. Creek 90650000 Bacteria Indicators Medium 6.6 Miles Nonpoint/Point Source Cadmium Low 6.6 Miles Nonpoint/Point Source Copper Low 6.6 Miles Nonpoint/Point Source Lead Low 6.6 Miles Nonpoint/Point Source Toxicity Low 6.6 Miles Nonpoint/Point Source Zinc Low 6.6 Miles Nonpoint/l'oint Source Tijuana River 91111000 Bacteria Indicators Low 5.8 Miles Nonpoint/Point Source Eutrophic Low 5.8 Miles Nonpoint/l'oint Source Low Dissolved Oxygen Low 5.8 Miles Nonpoint/Point Source P.:sticidcs Low 5.8 Miles Nonpoint/Point Source Solids Low 5.8 Miles Nonpoint/Point Source Synthetic Orgnnics Low 5.8 !\Jiles Nonpoint/Point Source Trace Elements Low 5.8 Miles Nonpoint/Point Source Trash Low 5.8 Miles f\.onpoint/Point Source Page 14 of 16 Approved by USEPA: .July 2003 9 E 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD Tijuana River Estuary 91111000 Bacteria Indicators Esrimared size ofimpairmcnr is I 50 acres. l\'onpoint/Point Source Eutrophic Esrimared size of impairment is I acre. Nonpoint/Point Source Lead EstimatP.d size of impairment is 1 acre. Low Dissolved Oxygen Nickel Nonpoint/Point Source Urban Runoff/Storm Sewers Wastewater Unknown Nonpoint Source Unknown point source EsNmatr.d s;zp, ofimpah·nwnt is I acre. Nonpoint/Point Source Pesticides Estimated size ofimpah·ment is I acre. Nonpoint/Point Source Thallium Estima!cd si":::c C?.limpairmc11t is I acre. Nonpoint/Poiut Sonrce Trash Estimated size ofimpairmcnt is 1 acre. Nonpoint/Point Source Pa{!,C 15 of 16 Low 1319 Acres Low 1319 Acres Low 1319 Acres Low 1319 Acres Low 1319 Acres Low 1319 Acres Low 1319 A«cs Low 1319 Acres ,1pprm·cd /Jy l!SEPA: J11(1• 1003 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD REGIONAL WATER QUALITY CONTROL BOARDS WATER BODY TYPE North Coast B= Bays and Ha,·bors 2 San Francisco Bay C = Coastal Shorelines/Beaches 3 Central Coast E ~ Estuaries 4 Los Angeles L = Lakcs/Rescrviors <; Central Valley R= Rivers and Streams 6 Lahontnn S= Saline Lakes 7 Colorado Rhcr Hasin T= Wetlands, Tidal 8 Santa Ana W= Wetlands, Freshwater 9 San Diego CALWATER WATERSHED "Calwatrr ,vatcrshed" is the State ,vater Resources Control Board hydrological subunit area or an even smaller area delineation. GROUP A PESTICIDES OR CHEM A aldrin, diclclrin, chlordane, cndrin, hcptnchlor, beptaehlor rpoxide, hexachlorocyclohcxanc (including lindanc), cndosulfan, and toxaphcne Page 16 of 16 Approl'cd by l!SEPA: ./11(1' 2003 STAFF REPORT VOLUME I REVISION OF THE CLEAN WATER ACT SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS SEPTEMBER 2005 DIVISION OF WATER QUALITY STATE WATER RESOURCES CONTROL BOARD CALIFORNIA ENVIRONMENTAL PROTECTION AGENCY COV01!7 Region Water Segment Peters Canyon Channel Rhine Channel San Diego Creek Reach 1 San Diego Creek Reach 2 Santa Ana Delhi Channel Seal Beach 9 Agua Hedionda Creek Barrett Lake Pollutant DDT Diazinon Fecal Coliform Nutrients Polychlorinated biphenyls Sedimentation/Siltation DDT Toxaphene Copper Lead Mercury Polychlorinated biphenyls Fecal Coliform Nutrients Sedimentation/Siltation Selenium Zinc Diazinon Nutrients Sedimentation/Siltation Unknown Toxicity Toxaphene Polychlorinated biphenyls Manganese Selenium Sulfates Color Manganese ·---------------pH (high) ----. -=·;ospho~ J Batiquitos Lagoon ~naCreek Buena Vista Creek Cottonwood Creek (in west San Diego County) 27 DDT Nitrate and Nitrite Phosphate Sulfates Sediment Bioassays --Chronic Toxicity .. Freshwater Total Dissolved Solids DDT Phosphorus Sediment Bioassays --Chronic Toxicity -- Freshwater DRAFT Region Water Segment San Diego Bay Shoreline, at Harbor Island (West Basin) San Diego Bay Shoreline, at Marriot Marina San Juan Creek DRAFT ----------··-·---· -------Pollutant Copper Copper Copper DDE ~%,nr-1\liicoi Creek San Marcos Lake -------· -------------- San Vicente Reservoir Sandia Creek Santa Margarita River (Lower) Soledad Canyon Sutherland Reservoir Sweetwater Reservoir Tecolote Creek Temecula Creek Tijuana River Estuary DDE Phosphorus Sediment Bioassays --Chronic Toxicity -- Freshwater -~---~---·------.. -----.. ----·-····-·--·-·-' 30 Arrunonia as Nitrogen Nutrients Phosphorus Total Dissolved Solids Chloride Color Manganese Sulfates Total Dissolved Solids pH (high) Iron Manganese Nitrogen Sulfates Mercury Sediment Bioassays --Chronic Toxicity -- Freshwater Manganese pH (high) Oxygen, Dissolved Total Dissolved Solids Phosphorus Turbidity Nitrogen Phosphorus Toial Dissolved Solids ATTACHMENT 5-WATER QUALITY STANDARDS INVENTORY DATA BASE Water Quality Standards Inventory Database Page I of 8 l Water Quality Standards Inventory Database I Click on the links below to search for another waterbody. Search by Beneficial Uses Search by Kevword Search by SWRCB Region Search bv Caltrans District Search by County Click on the links below to view water quality parameters for Batiquitos Lagoon _8_ent:f1t1~L Uses V\l .1te1 Qua] !t\· C)b1ect1\·t:s \.V~1~1..QJJaiitv Nr1rn.11ivc Constituc~nlS WateiOunl1t,: !-.!urnenc Criieri~ Click on the links below to view comments and corrections logged or to navigate to the comments and corrections input page Comments and Corrections Input Pal!e Batiquitos Lagoon 'i,TJ;ato•· Qu"''i°tV ('np("'"' ,:,,...,"r'i '~eo-•om• ~; .._.,__,.i;: c.;..t •' ,_.,11.; ::; . r. 1v·~ ?~.l'V,:'..i; "· .l -·ba· ,11.~ 0 Click on the region number for a list ofwaterbodies and reported 2 hydrologic units in that region. lilydrotogic Units: Reported G Published Click on the reported hydrologic unit for a list ofwaterbodies in Hydrologic Units ydrologjc Units that unit. I 904.51 IC 90t1.5 l CaHnms District: Click on the Caltrans district for a list ofwaterbodies and reported ll hydrologic units in that district. Counties: Click on the reported county name for a list of waterbodies and rnpomd hydrnlogic units in that county. I Reported c:ount}es Published Counties "-· 'Please ,~oie that reponed ,md published coun1ies are associated with hydrologic unit, nol wnterboo y. SAN DIEGO II SAN DlEGO I Location Map l Geospatial Waterbody System Assessment Data BATIQUITOS LAGOON (lllcludes 305(b) an<l 303(d) De\errnination~;) Waterbod.y Beneficial Uses RV!QCB Beneficial Use Sta tu~ Click on the beneficial use for the beneficial use code and description. tial or Existing I I httn·//www ic.P: 11r.rl::ivis P:rl1i/wm:irl/wlltP:rhorlv r:isn?wh tkP:v=1707 R/9/?.006 Water Quality Standards Inventory Database Page 2 of 8 Preservation of Biological Habitats Existing Estuarine Habitat Existing Existing anisms ecies Existing Existing !Existing Water Quality Objectives \N~i:erbody IBendicial jc U -tlConstituent 'Constituent 'Constituent 'Constituent Re·ach Use ons I uei, Concentration Units Details Comments *No WQOs Avaiiahie Water Quality Narrative Constituents Constituent Constituent Descriptioli Name Binstimulatory Inland surface waters. bays and estuaries and coastal lagoon waters shall not contain biostimularory Substances substances in concentrations that promote aquatic growth to the extent that such growths cause nuisance or adversely affect beneficial uses. Coior Waters shall be free of coloration that causes nuisance or adversely affects beneficial uses.The natural color of fish, shellfish or other resources in inland surface waters, coastal lagoon or bay and estuary shall not be impaired. D(J The dissolved oxygen concentration in ocean waters shall not at any time be depressed more than l 0 percent from that which occurs naturally. as the result of the discharge of oxygen demanding 'Naste materials. Fioating Waters shall not contain floating material, including solids. liquids, foams, 11nd scum in concentrations M&teria[ which cause nuisance or adversely affect beneficial uses. Oil and Grease Waters shall not contain oils, greases, waxes, or other materials in concentrations which result in a visible film or coating on the surface of the water or on objects in the water, or which cause nuisance or which otherwise adversely affect beneficial u.ses. pH The pH value shall not be changed at any time more than 0.2 pH units from that which occurs naturally.Changes in normai ambient pH levels shall not exceed 0.2 units in waters with designated marine (MAR), or estuarine (EST),. or saline (SAL) beneficial uses. Changes in normai ambient pH leve!s shall not exceed 0.5 units in fresh waters wit.b designated cold freshwater habitat (COLD) or warm freshwater habitat (WARM) beneficial useo. In bays and estuaries the pH shall not be depreso.ed belovi 7.0 nor raised above 9.0. In inland surface waters the pH shall not be depressed beiow 6.5 nor raised above 8.5. R~dioactivity Radionuclides shali not be present in concentrations that are deleterious to human. plant, animal, or aquatic life nor that result in the accumulation ofradionuciide.s in the food web to an extent that presents a hazard to human, plant, animal or aquatic life. Sedirnent The suspended sediment load and suspended sediment discharge rate of surface waters shall not b..:: altered in such a manner as to cause nuisance or adversely affect beneficial uses. Suspended Waters shall not contain suspended and settlable solids in concentn:'.tions of solids that cause nuisance Solids or adversely affect beneficial uses. Toxicity All waters shall be maintained free of toxic substance~ in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animaL or aquatic life. Compliance with this objective will be determined by use of indicator organisms .. analyses of species diversity. population density, grov,,th anomalies .. bioassays of appropriate duration, or orher appropriate methods R/()!')00fi Water Quality Standards Inventory Database Page 3 of 8 a!> specified by the Regiona! Bosrd. i'he survival of aquatic life in surface waters subjected to a waste discharge or other controllable \Nater quality factors, shall not be less then that for the same warer body in areas unaffected by the waste discharge or, when necessary, for other controi ,vater that is consistent with requirements specified in US EPA. State Water Resources Controi Board. As a minimum. compliance with this objective as stated in the previous sentence shall be evaluated with a 96-hour acute bimissay. ln addition, effluent limits based upon acute bioassays of effluents will be prescribed where appropriate. additional numerical receiving water objectives for specific tox.icants will be established as sufficient data become availcble, and source control of toxic substances wili be encouraged. Temperature The natural receiving ·water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses. At no time or place shall the temperature of any COLD water be increased more than 5F above the na,ural receiving water te1-;-iperature. Taste and Odor Waters shall not contain taste or odor producing substances at concentrations \vhich cause a nuisance or adversely affect beneficial uses. The natural 1aste and odor offish, shellfish or other Regional water resources used for human consumption Shall not be impaired in inland surface waterr and bays and estuaries. Turbidity \Vaters shall be free of changes 111 turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Numeric Criteria Beneficial Numeric Constituent Numeric Numeric Numeric Numer:c Numeric Constituent Constituent Constituent Constitus;nt Constituent Use Name Detail Maximum Units Comments Reference fv1AR Mercury Background 0.0000005 rng/L Ocean Plan sea water concentration MAR Mercury Daily 0.00016 rng/L Ocean Plan Maximum M1'1.R Mercury Instantaneous 0.0004 mg/L Ocean Plan Maximum MAR Nickel 6 Month 0.005 mo 1L 6' Ocean Plan Median MAR Nickel Daily 0.02 mg/L Ocean Plan Maximum fViAR Nickel lnsta11taneous 0.05 mg/L Ocean Plan Max1111ur11 MAR Nitrobenzene 30-day 0.0049 rng/L Ocean Plan Average MAR N-nitrosodimethylamine 30-day 0.0073 mg/L Ocean Plan P,.verage MAR N-nitrosodiphenylan1ine 30-day 0.0025 tr1g/L Ocean Plan Average MAR PAHs 30-day 0.0000088 1ng/L Ocean Plan ;\.verage ivfAR PCBs 30-clay 0. 0000000 I 9 mg/L Ocean Plan Average Yv!A:,F .. Phenolic Compounds (non-6 Month 0.03 mg/L ()cean Plan chlorinated) Median rvr.AR Phenolic Compounds (non-Daily 0.12 rng/L Ocean Plan chlorinated) Maximum f<-fiAR Phenolic Compounds (non-Instantaneous 0.3 mg/L Ocean Plan chlorinated) Maximum MAR Silver 6 Month 0.007 mg/L Ocean Plan Median R/9/?.006 Water Quality Standards Inventory Database Page 4 of 8 i\!i i~LR Siiver Background 0.000 l 6 rng/L C)cean Plan sea ·water concentration l\/tA_R Silver fJaily 0.0028 mg/L Ocean Plan Maximum MAR Silver fnsrantaneous 0.0007 rng!L Ocean Pian Maximum MAR TCDD equivalents 30-day 0.0000000000039 mg/L Ocean Plan Average !Vi1\R Tetrachioroethylene 30-day 0.099 1ng/L Ocean Pian Average MAR Thal ii urn 30-day 0.014 1ng/L Ocean Plan Average i\1iAR Toluene 30-day 85 mg/L Ocean Plan Average MAR Totai Chlorine Residual 6 Month 0.002 mg/L Ocean Plan Median !/JAR Total Chlorine Residual Daily 0.008 mg/L Ocean Plan Maximum MAR Total Chlorine Residual Instantaneous 0.06 mg/L Ocean Plan Maximum MAR Toxaphene 30-day 0.0000002 l mg/L Ocean Plan Average MAR Tributyltin 30-day 0.0000014 rng/L Ocean Plan Average l"v1P1.R Tri ch lornethylene 30-day 0.027 rng/L ()cean Plan Average MAR Vinyl Chloride 30-day 0.036 n1g/L Ocean Plan Average fvlAR Zinc 6 Month 0.02 rng/L Ocean Plan Median t/IAR Zinc Background 0.008 mg/L Ocean Plan sea water concentration MAR Zinc Daily 0.08 mg/L Ocean Plan Maximum MAR 7' .(_-inc Instantaneous 0.'.2 lTlg/L Ocean Plan Maximum \1./ARJvl Dissolved Oxygen -5 mg/L I\J1AR l, I, l -Trichloroethane 30-day 540 mg/L Ocean Plan i~verage :VIA .. R l, ! ,:2,2-Tetrach)oroe[hmie JO~day 1.1 I' 111g, L Ocean Plan .Average !\it/\ R 1, 1 . .2-Trict-doroethane 30-day 43 rng/L (.,\ce2r: Pi3n Average Y\IJ;0., R ! , i -Dichloroethylene 30-day 7.l mg/L Ocean Pian Average iv'ifa.R 1.2-Dichloroethane 30-day 0. 13 rng/L Ocean Plan /J..·,erage MAR J ,2-Diphenyihydrazine 30-day 0.00016 mg/L Ocean Plan Average MAR J ,3-Dich loropropene 30-day 0.0089 n-1g/L Ocean Plan )\verage Jv1/\R l ,4-Dich lorobenzene 30-day 0.018 IT1g/L Ocean Plan 'iUQ I')()(){.. Water Quality Standards Inventory Database Page 5 of 8 Average fViAR 1,4.6-Trichlorophenoi 30-day 0.00029 mg/L Ocean Pian Average MAR 1,4-Dinitrnphenol 30-day 0.004 n1g/L Ocean Plan Average MAR 2.4-Dinitrotoluene 30-day 0.0026 mg/L Ocean Plan f\.verage MAR 3,3-Dichlorobenzidinc 30-day 0.000008 l mg/L Ocean Pian Average MAR 4,6-Din itro-2-Methy iphenol 30-day 0.22 mg/L Ocean Plan Average tv1.AR Aero le in 30-day G.22 rng/L Ocean Pian .~verage MAR Acryionitrile 30-d;::y 0.000! mg/L Ocean Pian Average ?vlAR Aldrin 30-day 0.000000022 mg/L Ocean Plan Average MAR Antimony 30-day l.2 mg/L Ocean Plan Average MAR Arsenic 6 Month 0.008 rng/L Ocean Plan Median MAR Arsenic Background 0.003 mg/L Ocean Plan sea water concentration f\li/.,,R Arsenic Daily 0.032 mg/L Ocean Plan Maxin1um MAR Arsenic Instantaneous 0.08 mg/L Ocean Pl.an Maximum MAR Benzene 30-day 0.0059 rng/L Ocean Plan A~ verage MAR Benzidine 30-day 0.000000069 mg/L Ocean Plan Average MAR Beryllium 30-day 0.000033 mg/L Ocean Plan Average MAR Bis(2-chloroethoxy) 30-day 0.0044 mg/L Ocean ?Ian methane Average 1,1AR Gis(2-chloroethy]') ether 30-day 0.000045 rng/L Ocean Plan Average MAR Bis(2-chloroisoprnpyl) ether 30-day 1.2 rr1g/L Ocean Plan Average iv1AR Bis(2-ethylhexy I) phthalate 30-day 0.0035 rng/L Ocean Plan /'.verage fvIAR Cadmium 6 Month 0.001 rng/L ()cea11 Pian !v'l"edian I'"11!:.~R Cadmium Daily ().()04 mg/L ()cean Plan t\1axi1nu1n i·.fAR Cadmium Insta.ntaneous 0.01 1ng/L (Jcean Plan Maximum MAR Carbon Tetrachloride 30-day 0.0009 rng/L C)cean Plan Average ~/iitR Chlordane 30-day 0.000000023 ,,-rng1L Ocean Plan Average MAR Ch iorinated Phenolics 6 Month 0,001 mg/L Ocean Pian Median Q/Q/?OOh Water Quality Standards Inventory Database Page 6 of 8 \';/).tR Ch [orinated Phenciics Dai\ 0.004 ing/L 0-cean Plan Ma.;;imum f,/1!-\R Chlorinated Phenoiics Instantaneous 0.01 1ng/L Ocean Plan Maximum MAR Ch !orobenzene 30-day 0.57 mg/L Ocean Plan Average \1./.,_R Chloroform 30-day O.l.1 mg/L Ocean Plan Average 0ifAR Chromium 30-day 190 mg/l. Ocean Plan ll;.1verage MAR Chromium Vi 6 Month 0.002 n1g/L Ocenn Plan Median MAR Chron1iui11 ¥,..,. 'v l Daiiy 0.008 mg/L Ocean Plan Maximum MAR Chromium VI Instantaneous 0.01 mgiL Ocean Plan Maximum fl AR Chronic Toxicit_y Daiiy 0.001 TUc Ocean Pian Maximum f-v'fA.R Copper 6 r.fionth 0.003 mg/L Ocean Plan Median MAR Copper Background 0.002 rng/L Ocean Plan sea water concentration MAR.. Copper Daily 0.0]2 mg.IL Ocean Plan Maximum f,/!AR Copper Instantaneous 0.03 mg!L Ocean Plan Maximum MAR Cyanide 6 Month 0.001 1ng/L Ocean Plan Median MAR Cyanide Daily 0.004 mg/L Ocean Plan Maximum l\llAR Cyanide fnstantaneous 0.0! mg/L Ocean P!an Maximum fvlAR DDT 30-day 0.00000017 rng/L Ocean Plan Average lvlAR Dich lorobenzenes 30-day ' 1 _I • ~ mg/L Ocean Plan Average MAR Dichloromethane 30-day 045 mg/L Ocean Plan Average hiiA.R. Didcirin 30-day 0.00000004 rng/L ()cean Plan /-\ verage MAR D1ethv1 phthalate 30-day 33 rng/L ()cean Plan Average f/ /.l..,_[~ Dimethy1 phlh8late JO-day 820 111g/L Ocean Plan A .. ',/era~e fv1AR Di-n-butyl phthafate 30-dav 3.5 mg/L Ocean Plan it verage rvlA.R Dissolved 0:,ygen -5 n1g/L tv'iAR Endosuifan 6 Month 0.000009 n1g/L Ocean Plan Median MAR Endosulfan Daily 0.000018 n1g/L Ocean Plan Maximum MAR Endosulfan instantaneous 0.000027 rng/L., Ocean Plan lv1aximum httn·//www ic.P. nr.cbvi" P.rln/wn"irl/wMe.rhnclv ;;i._n?wh tkev=1707 ~/9/2006 Water Quality Standards Inventory Database Ivi,AR. Endrin 6 Month 0.000002 n1g/L Median !VIAR Endrin Daily 0.000004 mg/L Maximum fV1!\R Endrfn Instantaneous 0.000006 mg/L Maximum fvl/.\R Ethyl benzene 30-day 4.1 rng/L Average ~AAR 1-·1uoranthene 30-day 0.015 n1g/L Average MAR Halornethanes 30-day 0.13 mg/L l\ verage lv1AR I-ICH 6 Month 0.000004 mgiL Median MAR HCH Daily 0.000008 mg/L Maximum ivi?l.R lfr"l'l"l .i-1L,H Instantaneous 0.0000!2 n1g/L Maximum .MAR Heptachior 30-day 0.00000072 mg/L Average hltAR Hex ach lorobenzene 30-day 0.00000021 mg/L Average MAR Hexachlorobutadiene 30-day 0.014 mg/L Average rv11\R Hexachlorocyclopentadiene 30-day 0.058 1Y1g/L Average MAR Hexachloroethane 30-day 0.0025 mg/L P. .. verage MAR Jsophorone 30-day 150 mg/L Average r/iAR Lead 6 Month 0.002 mg/L Mediar: i\1iAR Lead Daily 0.008 mg/L Maximum 11.,1AR Lead Instantaneous 0.02 mg/L Maximum f\,1i\R JVfercury 6 Month 0.00004 n1g/L Median Water Quality Ammonia Criteria Beneficial Constituent Constituent Constituent Constituent Time Constituent Use Name !}H Tempen,ture Duration Concentration Ammonia as N -0.025 MAR Ammonia as N -0.6 MAR Ammonia as N -2.4 Mfa.R Ammonia as N -6 RA.RE Ammonia as N -0.025 RECI Ammonia as N -0.025 REC2 Ammonia as N -0.025 WARM Ammonia as N -0.025 httn://www.ice.ucdavis.edu/wosid/waterhodv.asn?wh fkev=1707 Page 7 of 8 Ocean Plan Ocean Plan Ocean Plan Ocean Plan Ocean Plan Ocean Plan Ocean Plan Ocean Pian Ocean Plan Ocean Plan Ocean Plan Ocean Plan Ocean Plan Ocean Plan Ocean Plan Ocean Plan Ocean Plan Ocean Plan Ocean Pian Constituent lJ nits iT1g/L mg/L mg/L mg/L mg/L mg/L rng/L 8/9/2006 Water Quality Standards Inventory Database Page 8 of 8 ,vater Quality Bacteria Criteria Beneficial Constituent Constituent Constituent Constituent Use Name Concentration Concentration Units Details REC1 Fecal Log Mean-i 0% of 400 Count per Coliform Samples for .30 day 100 ml RECl Fecal Log Mean-5 200 Count per Coliforn1 Samples for 30 day 100ml n ,...,, '/ !-<.._t,l.._ .• _ Fecal A. verage-10% of 4000 Count per Coliform Samples for 30 day 100 ml REC2 fecai Average-for 30 2000 Count per Colifom1 day 100ml Comments Comments Click above to go to the Comments input page. *No Comments Available :1Js-~ © Information Center for the Environment <,'!J~f;_,"7-feedback@ice.ucdavis.edu I Search i Notices I htto://www.ice.ucdavis.edu/wa sid/waterbodv .asn ?wb fkev=3 707 Constituent Constituent Comments Reference Log mean value. Based on more than 10 percent of total samples during any 30-day period. Log mean value. Based on a minimum of not less than five samples for any 30-day period. Average value. Based on more than 10 percent of total samples during any 30-day period. Average value. Based on samples for a 30-day period. WQSID Home ,;;-.. 8/9/2006 ATTACHMENT 6 -HYDROLOGIC UNIT MAP/DRAINAGE BASIN EY TO REGION )ARD ' ' \ 7 ) __ _) AREA (SD) s Solana ATTACHMENT 7-POST-CONSTRUCTION POLLUTANTS POLLUTANTS AND CONDITIONS OF CONCERN The anticipated and potential pollutants are marked in the table below. ANTICIPATED AND POTENTIAL POLLUTANTS GENERATED BY LAND USE TYPE GENERAL POLLUTANT CATEGORIES Oxygen PROJECT CATEGORIES Heavy Organic Trash & Demanding Sediments Nutrients Metals compounds Debris Substances Detached Residential Development Attached Residential Development Commercial Development > 1 0 0, 0 0 0 ft2 Automotive Repair Shops Restaurants Hillside Development >5,000 ft2 Parkinq Lots Streets, Highways & Freeways X = anticipated P= potential X X X p(1)X X .. (1) A potential pollutant if landscaping exists on-site. X x(4) X (2) A potential pollutant if the project includes uncovered parking areas. (3) A potential pollutant if land use involves food or animal waste products. (4) Including petroleum hydrocarbons. (5) Including solvents. PRIMARY POLLUTANTS • BACTERlA (TAKEN FROM 303(d) LIST) SECONDARY POLLUTANTS • SEDIMENTS • NUTRIENTS • BEA VY METALS • ORGANIC COMPOUNDS • TRASH AND DEBRlS • OXYGEN DEMANDING SUBSTANCES • OIL AND GREASE • PESTICIDES X p(5) Oil & Grease X X Bacteria & Viruses X Pesticides X ATTACHMENT 8 -POST-CONSTRUCTION BMPs Site Design & Landscape Planning SD-10 Description Design Objectives 0 Maximize lnfdtration 0 Provide Retention 0 Slow Runoff 0 Minimize Impervious Land Coverage Prohibit Dumping of Improper Materials Contain PoDutants Collect and Convey Each project site possesses unique topographic) hydrologic) and vegetative features, some of which are more suitable for development than others. Integrating and incorporating appropriate landscape planning methodologies into the project design is the most effective action that can be done to minimize surface and groundwater contamination from stormwater. Approach Landscape planning should couple consideration of land suitability for urban uses with consideration of community goals and projected growth. Project plan designs should conserve natural areas to the extent possible, maximize natural water storage and infiltration opporttmiti.es, and protect slopes and channels. Suitable Applications Appropriate applications include residential, commercial and industrial areas planned for development or redevelopment. Design Considerations Design requirements for site design and landscapes planning should conform to applicable standards and specifications of agencies v,tithjurisdiction and be consistent with applicable General Plan and Local Area Plan policies. January 2003 California Stormwater BMP Handbook New Development and Redevelopment www.cabmphandbooks.com 1 of 4 SD-10 Site Design & Landscape Planning Design i11g New Installations Begin the development of a plan for the landscape unit with attention to the following general principles: • Formulate the plan on the basis of clearly articulated community goals. Carefully identify conflicts and choices betvveen retaining and protecting desired resources and community growth. • Map and assess land suitability for urban uses. Include the following landscape features in the assessment: wooded land> open unwooded land, steep slopes, erosion-prone soils; foundation suitability, soil suitability for waste disposal, aquifers, aquifer recharge areas, wetlands, floodplains, sUiface waters, agricultural lands, and various categories of urban land use. When appropriate, the assessment can highlight outstanding local or regional resources that the community deterrnines should be protected (e.g., a scenic area, recreational area, threatened species habitat, farmland, fish run). Mapping and assessment should recognize not only these resources but also additional areas needed for their sustenance. Project plan designs should conserve natural areas to the extent possible, maximize natural water storage and infiltration opportunities, and protect slopes and channels. ConserveNaturalAreas duri.ng Landscape Planning If applicable, the following items are required and must be implemented in the site layout during the subdivision design and approval process, consistent with applicable General Plan and Local Area Plan policies: • Cluster development on least-sensitive portions of a site wr.Jle leaving the remaining land in a natural undisturbed condition. • Limit clearing and grading of native vegetation at a site to the minimum amount needed to build lots, allow access, and provide fire protection. • Maximize trees and other vegetation at each site by planting additional vegetation, clustering tree areas, and promoting the use of native and/or drought tolerant plants. • Promote natural vegetation by using parking lot islands and other landscaped areas. • Preserve riparian areas and wetlands. Maximize Natural Water Storage and In.fi.ltration Opportunities Within the Landsccrpe Unit • Promote the conservation of forest cover. Building on land that is already deforested affects basin hydrology to a lesser extent than converting forested land. Loss of forest cover reduces interception storage, detention in the organic forest floor layer, and water losses by evapotranspiration, resulting in large peak runoff increases and either their negative effects or the expense of countering them with structural solutions. 11 Maintain natural storage reservoirs and drainage corridors) including depressions, areas of permeable soils, swales, and intermittent streams. Develop and implement policies and 2 of 4 California Stormwater BMP Handbook New Development and Redevelopment www. cabm phandbooks. com January 2003 Site Design & Landscape Planning SD-10 regulations to discourage the clearing, filling, and channelization of these feahrres. Utilize them in drainage networks in preference to pipes, culverts, and engineered ditches. • Evaluating infiltration opportunities by referring to the stormwater management manual for the jurisdiction and pay particular attention to the selection criteria for avoiding groundwater contamination, poor soils, and hydrogeologi.cal conditions th.at cause these facilities to fail. If necessary, locate developments ·with large amounts of impervious surfaces or a potential to produce relatively contaminated runoff away from groUI1dwater recharge areas. Protection of Slopes and Chcrnnels during Landscape Desi.gn • Convey runoff safely from the tops of slopes. • Avoid disturbing steep or unstable slopes. • Avoid disturbing natural channels. • Stabilize disrurbed slopes as quickly as possible. • Vegetate slopes ,vi.th native or drought tolerant vegetation. • Control and treat flows in landscaping and/ or other controls prior to reaching existing narural drainage systems. • Stabilize temporary and permanent channel crossings as quickly as possible, and ensure that increases in run-off velocity and frequency caused by the project do not erode the channel. • Install energy dissipaters, such as riprap, at the outlets of new storm drains, culverts, conduits, or channels that enter unlined channels in accordance mth applicable specifications to minimize erosion. Energy dissipaters shall be installed in such a way as to minimize impacts to receiving waters. • Line on-site conveyance channels where appropriate, to reduce erosion caused by increased flow velocity due to increases in tributary impervious area. The first choice for linings should be grass or some other vegetative surface, since these materials not only reduce runoff velocities, but also provide water quality benefits from filtration and infiltration. If velocities in the channel are high enough to erode grass or other vegetative linings, riprap, concrete, soil cement, or geo-grid stabilization are other alternatives. • Consider other design principles that are comparable and equally effective. Redeveloping Existing Installations Various jurisdictional stormwater management and mitigation plans (SUS MP, WQ MP, 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 strucrural or impervious surlaces. The definition of" redevelopment" must be consulted to determine whether or not the requirements for new development apply to areas intended for redevelopment. If the definition applies, the steps outlined under "designing new installations" above should be followed. January 2003 California Stormwater BMP Handbook New Development and Redevelopment www.cabmphandbooks.com 3 of 4 SD-10 Site Design & Landscape Planning Redevelopment may present significant opportunity to add features which had not previously been implemented. Examples include incorporation of depressions, areas of permeable soils, and swales in newly redeveloped areas. While some site constraints may exist due to the status of already existing infrastructure, opportunities should not be missed to maximize infiltration, slow runoff, reduce impervious areas, disconnect directly connected impervious areas. Other Resources A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2002. Storm water Management Manual for W estem Washington, Washington State Department of Ecology, August 2001. Model Standard Urban Storm Water Mitigation Plan (SUSMP) for San Diego County, Port of San Diego, and Cities in San Diego County, February 14, 2002. Model Water Quality Management Plan (WQ MP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003. Ventura Countyvvide Technical Guidance Manual for Storm.water Quality Control Measures, July 2002. 4 of 4 California Stormwater BMP Handbook New Development and Redevelopment www.cabmphandbooks.com January 2003 Storm Drain Signage SD-13 Design Objectives Maximize Infiltration Provide Retention Slow Runoff Minimize Impervious Land Coverage 0' Prohibit Dumping of I mp roper Materials Contain Pollutants Collect and Convey Destription ~-,~ ... --~ ... -~ . .,,_ ... _.,. Waste materials dumped into storm drain inlets can have severe impacts on receiving and ground waters. Posting notices regarding discharge prohibitions at storm drain inlets can prevent waste dumping. Storm drain signs and stencils are highly visible source controls that are typically placed directly adjacent to storm drain inlets. Approach The stencil or affixed sign contains a brief statement that prohibits dumping of improper materials into the urban runoff conveyance system. Storm drain messages have become a popular met.hod of alerting the public about the effects of and the prohibitions against waste disposal. Suitable Applications Stencils and signs alert the public to the destination of pollutants discharged to the storm dra:in. Signs are appropriate in residential, commercial, and industrial areas, as well as any other area where contributions or dumping to storm drains is likely. Design Considerations Storm drain message markers or placards are recommended at all storm dram inlets within the boundary of a development project The marker should be placed in clear sight facing toward anyone approaching the inlet from either side. All storm drain inlet locations should be identified on the development site m.ap. Designing New Installations The following methods should be considered for inclusion in the project design and show on project plans: • Provide stenciling or labeling of all storm drain inlets and catch basins, constructed or modified, within the project area with prohibitive language. Examples include "NO DUMPING 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 other graphical icons to discourage illegal dumping. • Post signs 'With prohibitive language and/or graphical icons, which prohibit illegal dumping at public access points along channels and creeks 'Within the project area. Note -Some local agencies have approved specific signage and/or storm drain message placards for use. Consult local agency storm water staff to determine specific requirements for placard types and methods of application. Redeveloping Existing Installations Valious jurisdictional stormwater management and mitigation plans (SUSMP, WQMP, etc.) define "redevelopment" in terms of amounts of additional impervious area, increases in gross floor area and/or exterior construction, and land disturbing activities with structural or impervious surfaces. If the project meets the definition of "redevelopment'', then the requirements stated under" designing new installations" above should be included in all project design plans. Additional Information Maintenance Considerations • Legibility of markers and signs should be maintained. If required by the agency ,'v'i.th jurisdiction over the proje~t, the owner /operator or homeowner's association should enter into a maintena..-rice agreement with t.l1e agency or record a deed restriction upon the property title to maintain the legibility of placards or signs. Placement • Signage on top of curbs tends to weather and fade. • Signage on face of curbs tends to be worn by contact with vehicle tires and sweeper brooms. Supplemental Information Examples • Most MS4 programs have storm drain sigriage programs. Some MS4 programs ~ provide stencils, or arrange for volunteers to stencil storm drains as part of their outreach program. Other Resources A Manual for the Standard Urban Stormwater Mitigation Plan (SUSMP), Los Angeles County Department of Public Works, May 2002. Model Standard Urban Storm Water Mitigation Pla.11 (SUSMP) for Sa..11 Diego C01mty, Port of San Diego, and Cities in San Diego County, February 14, 2002. Modei Water Quality Management Plan (WQ MP) for County of Orange, Orange County Flood Control District, and the Incorporated Cities of Orange County, Draft February 2003. Ventura Countywide Technical Guidance Manual for Storm water Quality Control Measures, July 2002. 2 of 2 California Stormwater BMP Handbook New Development cnd Redevelopment www. cabm phandbooks. com January 2003 Street Sweeping and Vacuuming SE-7 Description and Purpose Street sweeping and vacuuming includes use of self-propelled and walk-behind equipment to remove sediment from streets and roadways, and to clean paved surfaces in preparation for final paving. Sweeping and vacuuming prevents sediment from the project site from entering storm drains or receiving waters. Suitable Applications Sweeping and vacuuming are suitable anywhere sediment is tracked from the project site onto public or private paved streets and roads, typically at points of egress. Sweeping and vacuuming are also applicable during preparation of paved surfaces for final paving. Limitations Sweeping a.."'1.d vacuuming may not be effective when sediment is wet or when tracked soil is caked ( caked soil may need to be scraped loose). Implementation • Controlling the number of points where vehicles can ieave the site will allow sweeping and vacuuming efforts to be focused, a..-rid perhaps save money. • Inspect potential sediment tracking locations daily. • Visible sediment tracking should be swept or vacuumed on a daily basis. January 2003 California Stormwater BMP Handbook Construction www.cabmphandbooks.com Objectives ~--:; <>lrliall'i?";,l<=-~-""=-'F•_,__.,. .. EC Erosion Conirol SE Sediment Control !El TR Tracking Control 0 WE Wind Erosion Control NS Non-Stormwater Management Conirol WM Waste Management ard Mcterials Pollution Control Legend: 0 Primary Objective U9 Secondary Objective Targeted Constituents .._.._:>( ___ ........ _ Sediment 0 Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None ._\',.LJt .. '.._";},:J,-iA E-;fUR\H~1A'I B~ < ' • 'j 'l ~ C 1 of 2 SE-7 Street Sweeping and Vacuuming • Do not use kick brooms or sweeper attachments. These tend to spread the dirt rather than remove it. • If not mixed with debris or trash, consider incorporating the removed sediment back into the project Costs Rental rates for self-propelled sweepers vary depending on hopper size and duration of rental. Expect rental rates from $58jhour (3 yd3 hopper) to $88/hour (9 yd3 hopper), plus operator costs. Hourly production rates vary with the amount of area to be swept and amount of sediment. Match the hopper size to the area and expect sediment load to minimize time spent dumping. Inspection and Maintenance • Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events, weekly during the rainy season, and at two-week intervals during the non-rainy season. • When actively in use, points of ingress and egress must be inspected daily. • When tracked.or spilled sediment is observed outside the construction limits, it must be removed at least daily. More frequent removal, even continuous removal, may be required in some jurisdictions. • Be careful not to sweep up any unknown substance or any object that may be potentially hazardous. • Adjust brooms frequently; maximize efficiency of sweeping operations. • After sweeping is finished, properly dispose of sweeper wastes at an approved dumpsite. References Stormwater Quality Handbooks -Construction Site Best Management Practices (BMPs) Manual, State of California Department of Transportation ( Caltrans ), November :2000. Labor Surcharge and Equipment Rental Rates, State of California Department of Transportation (Caltrans), April 1, 2002 -March 31, 2003. 2 of2 California Stormwater BMP Handbook Construction www. cabmphandbooks. com January 2003 Velocity Dissipation Devices Description and Purpose Outlet protection is a physical device composed of rock) grouted riprap, or concrete rubble, which is placed at the outlet of a pipe or channel to prevent scour of the soil caused by concentrated, high velocity flows. Suitable Applications Whenever discharge velocities and energies at the outlets of culverts, conduits, or channels are sufficient to erode the next downstream reach. This includes temporary diversion structures to divert runon during construction. • These devices may be used at the following locations: Outlets of pipes, drains, culverts, slope drains, diversion ditches, swales, conduits, or channels. Outlets located at the bottom of mild to steep slopes. Discharge outlets that carry continuous flows of water. Outlets subject to short, intense flows of water, such as flash floods. Points where lined conveyances discharge to unlined conveyances Limitations • Large storms or high flows can wash away the rock outlet protection and leave the area susceptible to erosion. January 2003 California Stormwater BMP Handbook Construction www. cabm phandbooks. com EC-10 Objectives ,... __ ,..,.,. .... ~~'-'--..,,.""""" EC Erosion Control 0 SE Sediment Control TR Tracking Control WE Wind Erosion Control NorrStormwater Management Control NS WM Waste Management ard M.terials Pollution Control Legend: 0 Primary Objective ~ Secondary Objective Targeted Constituents --·-"' Sediment 0 Nutrients Trash Metals Bacteria Oil and Grease Organics Potential Alternatives None i...C~LfrUl!'.\i.!\ t, ;·C}U.",1',,",'t\. J i.:X t ,., ,,·,, 1 of 4 EC-10 Velocity Dissipation Devices • Sediment captured by the rock outlet protection may be difficult to remove without removing the rock. • Outlet protection may negatively impact the channel habitat. • Grouted rip rap may break up in areas of freeze and thaw. • If there is not adequate drainage, and water builds up behind grouted riprap, it may cause the grouted riprap to break up due to the resulting hydrostatic pressure. Implementation General Outlet protection is needed where discharge velocities and energies at the outlets of culverts, conduits or channels are sufficient to erode the immediate downstream reach. This practice protects +1,e outlet from developing small eroded pools (plange pools), and protects against gully erosion resulting from scouring at a culvert mouth. Design andLayout As with most channel design projects, depth of flow, roughness, gradient, side slopes, discharge rate, and velocity should be considered in the outlet design. Compliance to local and state regulations should also be considered while working in environmentally sensitive streambeds. General recommendations for rock size and length of outlet protection mat are shown in the rock outlet protection figure in this BMP and should be considered minimums. The apron length and rock size gradation are determined using a combination of the discharge pipe diameter and estimate discharge rate: Select the longest apron length and largest rock size suggested by the pipe size and discharge rate. Where flows are conveyed in open channels such as ditches and swales, use the estimated discharge rate for selecting the apron length and rock size. Flows should be same as the culvert or channel design flow but never the less than the peak 5 year flow for temporary structures planned for one rainy season, or the 10 year peak flow for temporary structures planned for two or three rainy seasons. • There are many types of energy dissipaters, with rock being the one that is represented in the attached figure. • Best results are obtained when sound, durable, and angular rock is used. • Install riprap, groutedriprap, or concrete apron at selected outlet. Riprap aprons are best suited for temporary use during construction. Grouted or wired tied rock riprap can minimize maintenance requirements. • Rock outlet protection is usually less expensive and easier to install than concrete aprons or energy dissipaters. It also serves to trap sediment and reduce flow velocities. • Carefully place riprap to avoid damaging the filter fabric. 2 of 4 Stone 4 in. to 6 in. may be carefully dumped onto filter fabric from a height not to exceed 12in. Stone 8 in. to 12 in. must be hand placed onto filter fabric, or the filter fabric may be covered with 4 in. of gravel and the 8 in. to 12 in. rock may be dumped from a height not to exceed 16 in. California Stormwater BMP Handbook Construction www. cabm phandbooks. com January 2003 Velocity Dissipation Devices EC-10 Stone greater than 12 in. shall only be dumped onto filter fabric protected with a layer of gravel with a thickness equal to one half the D5o rock size, and the dump height limited to twice the depth of the gravel protection layer thickness. • For proper operation of apron: iJ.ign apron with receiving stream and keep straight throughout its length. If a curve is needed to fit site conditions, place it in upper section of apron. • Outlets on slopes steeper than 10 percent should have additional protection. Costs Costs are low if material is readily available. If material is imported, costs will be higher. Average installed cost is $150 per device. Inspection and Maintenance • Inspect BMPs prior to forecast rain, daily during extended rain events, after rain events, weekly during the rainy season, and at two-week intervals during the non-rainy season. • Inspect BMPs subjected to non-stormwater discharges daily while non-stormwater discharges occur. • Inspect apron for displacement of the riprap and damage to the underlying fabric. Repair fabric and replace riprap that has washed away. If riprap continues to wash away, consider using larger material. • Inspect for scour beneath the riprap and around the outlet. Repair damage to slopes or underlying filter fabric immediately. • Temporary devices should be completely removed as soon as the surrounding drainage area has been stabilized or at the completion of construction. References County of Sacramento Improvement Standards, Sacramento County, May 1989. Erosion and Sediment Control Handbook, S.J. Goldman, K. Jackson, T.A. Bursztynsky, P .E., McGraw Hill Book Company, 1986. Handbook of Steel Drainage & Highway Construction, American Iron and Steel Institute, 1983. ManUBJ of Standards of Erosion and Sediment Control Measures, Association of Bay Area Governments, May 1995. Storm.water Quality Handbooks Construction Site Best Management Practices (BMPs) Manual, state of California Department of Transportation (Caltrans), November 2000. Stormwater Management of the Puget Sound Basin, Technical Manual, Publication #91-75, Washington State Department of Ecology, February 1992. Water Quality Management Plan for the Lake Tahoe Region, Volume II, Handbook of Management Practices, Tahoe Regional Planning Agency, November 1988. January 2003 California Stormwater BMP Handbook Construction www. cab mp handbooks. com 3 of 4 EC-10 Velocity Dissipation Devices 4 of4 A PLAN VIEW SECTION A-A Pipe Diameter Discharge Apron Length, La inches ft.3/s ft 5 10 1:2 10 13 10 10 20 16 18 30 23 40 26 30 16 40 26 24 50 26 60 30 .. For larger or higher flows consult a Registered Civil Engmeer Source: USDA-SCS California Stormwater BMP Handbook Construction www.cabmphandbooks.com 4d0 (min) Pipe outlet to well defined channel Rip Rap D50 Diameter Min inches 4 6 6 8 12 16 8 8 12 16 January 2003 Media Filter MP-40 Description Stormwater media filters are usually two-chambered including a pretreatment setiling basin and a filter bed filled with sand or other absorptive filtering media. As stormwater flows into the first chamber, large particles settle out, and then finer particles and other pollutants are removed as stormwater flows through the filtering media in the second chamber. There are currently three manufacturers of storm water filter systems. Two are similar in that they use cartridges of a standard size. The cartridges are placed in vaults; the number of cartridges a function of the design flow rate. The water flows laterally (horizontally) into the cartridge to a centerwell, then downward to an underdrain system. The third product is a flatbed filter, similar in appearance to sand filters. California Experience There are currently about 75 facilities in California that use manufactured filters. Advantages • Requires a smaller area than standard flatbed sand filters, wet ponds, and constructed wetlands. • There is no standing water in the units between storms, minimizing but does not entirely eliminate the opportunity for mosquito breeding. • Media capable of removing dissolved pollutants can be selected. • One system utilizes media in layers, allowing for selective removal of pollutants. • 'Ib.e modular concept allows the design engineer to more closely match the size of the facility to the design storm. Limitations • ~As some of the manufactured filter systems function at higher flow rates and/or have larger media than found in flatbed filters, the former may not provide the same level of performance as standard sand filters. However, the level of treatment may still be satisfactory. • As with all filtration systems, use in catchments that have significant areas of non-stabilized soils can lead to premature clogging. January 2003 Cal lfom ia Stormw ater BMP Handbook New Development and Redevelopment www.cabmphandbooks.com Design Considerations • Design Storm • Media Type • Maintenance Requirement Targeted Constituents =..........,,.--......-....--/-..-,....~ 0 Sediment 0 Nutrients 0 Trash 0 Metals Bacteria 0 Oil and Grease 0 Organics Rernova/Effec6veness See New Development and Redevelq:,ment Handbook-Section 5. 1 of 3 MP-40 Media Filter Design and Sizing Guidelines There are currently three manufact:l.ITers of storm water filter systems. Filter System A This system is similar in appearance to a slow-rate sand filter. However, the media is cellulose material treated to enhance its ability to remove hydrocarbons and other organic compounds. The media depth is 12 inches (30 cm). It operates at a very high rate, 20 gpm/fu at peak flows. Normal operating rates are much lower assuming that the storm water covers the entire bed at flows less than the peak rate. The system uses vortex separation for pretreatment. M the media is intended to remove sediments (with attached pollutants) and organic compounds, it would not be expected to remove dissolved pollutants such as nutrients and metals unless they are complexed with the organic compounds that are removed. Filter System B: It uses a simple vertical filter consisting of 3 inch diameter, 30 inch high slotted plastic pipe wrapped with fabric. The standard fabric has nominal opei."1.ings of 10 microns. The stormwater flows into the vertical filter pipes and out through an underdrain system. Several units are placed vertically at 1 foot intervals to give the desired capacity. Pretreatment is typically a dry extended detention basin, with a detention time of about 30 hours. Storm water is retained in the basin by a bladder that is automatically inflated when rainfall begins. This action starts a timer which opens the bladder 30 hours later. The filter bay has an emptying time of 12 to 24 hours, or about 1 to 2 gpm/ft2 of filter area. This provides a total elapsed time of 42 to 54 hours. Given that the media is fabric, the system does not remove dissolved pollutants. It does remove pollutants attached to the sediment that is removed. Filter System C: The system use vertical cartridges in which stormwater enters radially to a center well within the filter unit, fl.owing downward to an underdrain system. Flow is controlled by a passive float valve system, which prevents water from passing through the cartridge until the water level in the vault rises to the top of the cartridge. Full use of the entire filter surface area and the volume of the cartridge is assured by a passive siphon mechanism as tlie water surface recedes below the top of tlie cartridge. A balance between hydrostatic forces assures a more or less equal flow potential across the vertical face of the filter surface. Hence, the filter surface receives suspended solids evenly. Absent the float valve and siphon systems, the amount of water treated over time per unit area in a vertical filter is not constant, decreasing ·with the filter height; furthermore, a filter would clog unevenly. Restriction of the flow using orifices ensures consistent hydraulic conductivity of the cartridge as a whole by allowing the orifice, rather than the media, whose hydraulic conductivity decreases over time, to control flow. The manufact:l.ITer offers several media used singly or in combination ( dual-or multi-media). Total media thickness is about 7 inches. Some media, such as fabric and perlite, remove only suspended solids (with attached pollutants). Media that also remove dissolved include compost, zeolite, and iron-infused polymer. Pretreatment occurs in an upstream unit and/or the vault within which the cartridges are located. Water quality volume or flow rate ( depending on the particular product) is determined by local governments or sized so that 85% of the annual runoff volume is treated. Construction/Inspection Considerations • Inspect one or more times as necessary during the first wet season of operation to be certain that it is draining properly. 2 of 3 California Stormwater BMP Handbook New Development and Redevelopment www.cabmphandbooks.com January 2003 Media Filter MP-40 Performance The mechanisms of pollutant removal are essentially the same as with public domain filters (TC -40) if of a similar design. Whether removal of dissolved pollutants occurs depends on the media. Perlite and fabric do not remove dissolved pollutants, whereas for examples, zeolites, compost, activated carbon, and peat have this capability. As most rnanuf actured filter systems function at higher flow rates and have larger media than found in flatbed filters, they may not provide the same level of performance as standard sand filters. However, the level of treatment may still be satisfactory. Siting Criteria There are no unique siting criteria. Additional Design Guidelines Follow guidelines provided by the manufacturer. Maintenance • Maintenance activities and frequencies are specific to each product . .Annual maintenance is typical. • Manufactured filters, like standard filters (TC-40 ), require more frequent maintenance than most standard treatment systems like wet ponds and constructed wetlands, typically annually for most sites. • Pretreatment systems that may precede the filter unit should be maintained at a frequency specified for the particular process. Cost Manufacturers provide costs for the units including delivery. Installation costs are generally on the order of 50 to 100 % of the manufacturer's costs. Cost Considerations • Filters are generally more expensive to maintain than swales, ponds, and basins. • The modularity of the manufactured systems allows the design engineer to closely match the capacity of the facility to the design storm, more so than with most other manufactured products. References and Sources of Additional Information Minton, G.R., 2002, Stormwater Treatment: Biological, Chemical, and Engineering Principles, RP A Press, 416 pages. January 2003 California Stormwater BMP Handbook New Development and Redevelopment www. cabm phandbooks. com 3 of 3 ATTACHMENT 9-ENHANCED TREATMENT CONTROL BMP SELECTION MATRIX (V, L, M, H) Table 4. Structural Treatment Control BMP Selection Matrix Pollutant of Treatment Control BMP Categories Concern Detention Infiltration Wet Ponds Drainage Hydrodynamic Biofilters Basins Basins (1) or Inserts Filtration Separator Wetlands Svstemsf2l Sediment M H H H L H M Nutrients L M M M L M L Heavy M M M H L H L Metals Organic u u u u L M L Compounds Trash & L H u u M H M Debris Oxygen Demanding L M M M L M L Substances Bacteria u u H u L M L Oil & Grease M M u u L H L Pesticides u u u u L u L (1) Including trenches and porous pavement (2) Also known as hydrodynamic devices and baffle boxes. L; Low removal efficiency M: Medium removal efficiency H: High removal efficiency U: Unknown removal efficiency ATTACHMENT 10-STORMWATER360 STORMFILTER UNITS (MEDIA FILTRATION) Calculate O's to treat using the State Water Resource Control Board Requirements Per the California Regional Water Quality Control Board, San Diego Region, order no. 2001-01 pages 18 & 19, in order to get the required flow to be treated, we can either use: i. The maximum flow rate of runoff produced from a rainfall intensity of 0.2 inch of rain fall per hour; or ii. The maximum flow rate of runoff produced by the 85th percentile hourly rainfall intensity, as determined from the local historical rainfall record, multiplied by a factor of two; or iii. The maximum flow rate of runoff, as determined from the local historical rainfall record, that achieves approximately the same reduction in pollutant loads and flows as achieved by mitigation of the 85th percentile hourly rainfall intensity multiplied by a factor of two. For this project we are going to use the maximum flow rate of runoff produced from a rainfall intensity of 0.2 inch of rainfall per hour. Please see the Post-development Hydrology Basin Map to see locations of the nodes. C values where derived using the formula Q=CIA. Values of Q, I and A are from the confluence results of the node junction. R . dt tdfl eqmre rea e I 1 . ow ca cu ations SYSTEM NODE (A)AREA Tc C I Q=CIA (Acres) (f'llins) (In/Hr) cfs LINE A-3 202 3.89 10.01 0.49 0.20 0.38 BMP t t t . d t t t f fl s rue ure o meet req mre rea men o ows SYSTEM Required STORMWATER Treated Remarks Q 360MODEL flow LINE A-3 0.38 STORMFIL TER W/ 12 CARTRIDGES 0.38 Meets requirement See attached printout for a brief overview of how the Stormfilter is sized. Manufacturer uses a 15 gpm/cartridge (or 0.0334 cfs/cartridge) to determine the number of cartridges. Therefore to treat 0.38 cfs: 0.38 cfs/0.0334 cfs/cartridge = 11.38 cartridges Use 12 cartridges For a filter with 12 cartridges, the manufacturer recommends an 8'X16' pre-cast basin size. Size and Cost Estimate Black Rail Subdivision -Stormwater Treatment System Carlsbad, CA Information provided: • Total contributing area = 3.89 acre • Water quality flow, Owq = 0.38 cfs • Peak hydraulic flow rate, Opeak = 8.67 cfs • Runoff Coefficient, C = 0.49 • Presiding agency = City of Carlsbad, CA Assumptions: • Media = Perlite cartridges • Drop required from inlet to outlet= 2.3' minimum Size and cost estimates: The StormFilter is a flow-based system, and therefore, is sized by calculating the peak water quality flow rate associated with the design storm. The water quality flow rate was calculated by the design e·1gineer provided to Stormwater360. The StormFilter for this site was sized based on a water quality flow rate of 0.38 cfs. To accomrmdate this flow rate, Stormwater360 recommends using an 8'x16' StormFilter with 12 cartridges (see attached detail). The estimated cost of this system is $30,600, complete and delivered to the job site. This estimate assumes that the vault is 6 feet deep. The final system cost will depend on the actual depth of the units and whether extras like doors rather than castings are specified. The contractor is responsible for setting the 8'x16' StormFilter and all exte~nal plumbing. This precast StormFilter has an internal bypass capacity of 1.8 cfs. Since the peak discharge off the site is expected to exceed this rate, we recommend placing a high-flow bypass upstream of the StormFilter system. Stormwater360 could provide our high-flow bypass, the StormGate, which provides a combination weir-orifice control structure to limit the flow to the Stormfilter. The estimated cost of this structure is $5,000. The final cost \i\ould depend on the actual depth and size of the unit. The leaders in the stormwater industry. Stormwater Management, Inc. and Vortechnir.s, Inc., have united as Stormwater360'" -the comprehensive provider of stormwater solutions. With an unparalleled product line and unmatched customer support team under one umbrella, Stormwater360 has the treatment option to meet your water quality goals. v..Jvvv,; .storrn•N8.ter360.com ©2005 Stormwater360 12021-B NE Airport Way, Portland OR 97220 1/24/2006 EKN Toll-free: 800.548.4667 Fax: 800.561.1271 ALTERNATE PIPE LOCATION (TYP) (SEE NOTE G) INLET PIPE (SEE NOTES 51!:G) FILTRATION BAY 8' x 16' STORM FILTER -PLAN VIEW (I) BALLAST (SEE NOTE Bl COUPLING (TYP) (BY CONTRACTOR) OUTLET PIPE (SEE NOTES 5i+G) OUTLET BAY 30" 0 FRAME AND COVER (TYP) (SEE NOTE 4) GRADE RING (TYPJ FLOW SPREADER (TYP) PERi'v1ANENT ENERGY DISSIPATOR BAFFLE WALL (TYP) LADDER STORMFILTER CARTRIDGE (TYP) (SEE NOTE 2) 3'-4" / UNDERDRAIN MANIFOLD 4'-G" MIN (SEE NOTE 7) 8' x 16' STORMFIL TER -SECTION VIEW Cf) ©2005 Stonnwater360 www.stormwater360.com ,HE 5TOR.MWATER MANAGEMENT Stormf1lter® U.S. PATENT No. 5,322,G29. No. 5,707,527. No. G,027,G3'.:l No G,G4S,045, No. 5,G24,57G. 8' x 16' PRECAST STORMFILTER PLAN AND SECTION VIEWS STANDARD DETAIL DATE: 09/29/05 SCALE: NONE FILE NAME: SF816-PC-DTL AND OTHER U5-AND FOREIGN PATENTS FENDING DRAWING 1 1/2 DRAWN:MJW CHECKED:ARG GENERAL NOTES I) STORMFILTER BY STORMWATER3GO (53GO), PORTLAND, OREGON (800) 548-4GG7. 2) FILTER CARTRIDGE(5) TO BE SIPHON-ACTUATED AND SELF-CLEANING. STANDARD DETAIL DRAWING SHOWS MAXIMUM NUMBER OF CARTRIDGES. ACTUAL NUMBER REQUIRED TO BE SPECIFIED ON SITE PLANS OR IN DATA TABLE BELOW. 3) PRECAST VAULT TO BE CONSTRUCTED IN ACCORDANCE WITH ASTM C857 AND C858. DETAIL DRAWING REFLECTS DESIGN INTENT ONLY. ACTUAL DIMENSIONS AND CONFIGURATION OF STRUCTURE WILL BE SHOvVN ON PRODUCTION SHOP ORA.WING. 4) STRUCTURE AND ACCESS COVERS TO MEET AASHTO H-20 LOAD RATING. 5) STORMFILTER REQUIRES 2.3 FEET OF DROP FROM !NLET TO OUTLET. IF LESS DROP 15 AVAILABLE, CONTACT 5%0. GJ INLET AND OUTLET PIPING TO BE SPECIFIED BY ENGINEER AND PROVIDED BY CONTRACTOR. PRECAST STORMFILTER VAULT EQUIPPED WITH EITHER CORED OPENINGS OR KNOCKOUTS AT INLET AND OUTLFT LOCATIONS. 7) PROVIDE MINIMUM CLEARANCE FOR MAINTENANCE ACCESS. IF A SHALLOWER SYSTEM 15 REQUIRED, CONTACT S3GO FOR OT/-',ER OPTIONS. 8) ANTI-FLOTATION BALLAST TO BE SPECIFIED BY ENGINEER AND PROVIDED BY CONTRACTOR, IF REQUIRED. BALLAST TO BE SET ALONG ENTIR,E LENGTH OF BOTH SIDES OF THE STRUCTURE. 9) ALL STORMFILTERS REQUIRE REGULAR MAINTENANCE. REFER TO OPERATION AND MAINTENANCE GUIDELINES FOR MORE INFORMATION. BAFFLE WALL UNDER.DRAIN MANIFOLD 30" 0 FRAME AND COVER (TYP) (SEE NOTE 4) BALLAST (SEE NOTE 8) HEIG:-IT 8' x 16' STORMFIL TER -SECTION VIEW (]) 5'-3" ---+---5'-G" ---+---5'-3" 8' i-----------~/bl~--------~ 8' x 16' STORMFIL TER -TOP VIEW (]) ©2005 Stonnwater360 8' X I G' PRf:CAST STORMFILTE:s:, DATA STRUCTURE ID XXX WATER QUALITY FLOW RATE (ds) X.XX PEAK FLOW RATE (cfs) x.xx RETURN PERIOD OF PEAK FLCW (yrs) XXX # OF CARTRIDGES REQUIRED xx CARTRIDGE FLOW RATE ( 15 O'<. 7.5 c:ipm) xx MEDIA TYPE (CSF, PER.LITE, ZiS) xxxxx PIPE DATA: I.E. MA"ERIAL DIAMETER INLET PIPE # I XXX.XX' XXX XX" INLET PIPE #2 XXX.XX' XXX XX" OUTLET PIPE XXX.XX' 5:xx XX" -RIM *FLOWG~ XXX.XX' ~ LADDER YES/NO ANTI-FLOTATION BALLAST I WIDTH I HEIGHT I XX" I XX" NOTES/SPECIAL REQUIREMEN"'S: THE STORMWATER MANAGEMENT Stormfilter® U.5. PATENT No. 5,322,629, No. 5,707,527, No. G,027,G39 No. G,G49,048, No. 5,G24,57G. AND OTHER U.S. AND FOREIGN PATENT5 PENDING 8' x 16' PRECAST STORMFILTER DRAWING www.stormwater360.com TOP AND SECTION VIEWS, NOTES AND DATA STANDARD DETAIL 2 212 DATE: 09/29/05 SCALE: NONE FILE NAME: SF816-PC-DTL DRAWN: MJW CHECKED: ARG The Stormwater Management StormFilter® Performance Summary for Excel Engineering January 25, 2006 12021-s NE Airport Way, Portland, OR 97220 (( 800.548.4667 800.561.1271 stormwaterinc.com Table of Contents The Stormwater Management StonnFilter® (StorrnFilter) a. StormFilter Overview b. Total Suspended Solids c. Phosphorus d. Metals e. Oil and Grease f. Bacteria The Stormwater Management StormFilter® The Stormwater Management StormFilter® (StormFilter) is a Best Management Practice (BMP) designed to meet federal, state, and local requirements for treating stormwater runoff in compliance with the Clean Water Act. The StormFilter, a passive, flow-through, stormwater filtration system and improves the quality of stormwater runoff from the urban environment before it enters receiving waterways by removing non-point source pollutants, including sediment (TSS), oil and grease, soluble metals, nutrients, organics, and trash and debris. The StormFilter excels in numerous applications and is being used to treat runoff from a wide variety of sites including: retail and commercial developments, residential streets, urban roadways, freeways, and industrial sites such as shipyards, foundries, and high-tech developments. For jurisdictional authorities, the StormFilter offers high levels of pollutant removal and improved water quality. For developers and contractors, the StormFilter is cost-effective, easy to install, and uses no additional land (completely underground). For engineers, Stormwater360 provides full design support at no additional cost. Operation The StormFilter is typically comprised of a vault that houses rechargeable, media-filled, filter cartridges. Stormwater from storm drains is percolated through the cartridges, which trap particulates and remove pollutants such as dissolved metals, nutrients, and hydrocarbons. Once filtered through the media, the treated stormwater is directed to a collection pipe or discharged to an open channel drainage way. Configurations The StormFilter is offered in seven basic configurations: vault, manhole, high flow, catch basin, curb inlet, linear, and volume. All configurations use pre-manufactured units to ease the design and installation process. Cast-in-place units can be customized for very large flows. Figure 1 shows a typical MANHOLECOVER precast . ACCESS UIODER StormFilter unit. The typical precast StormFilter unit is composed of three bays: the inlet bay, the filtration bay, and the outlet bay. Stormwater first enters the inlet bay of the tNU1'-~E HIGH FU}\N BYPASS OUTLET PIPE UNDEil·DRAIN OUTLEl ·' OU1LE1 BAY UNDER·ORAIN MANIFOlfJ . · INLET PIPE FILrRAnON BAY StormF1iter CARlRIOGE FLOW SPREADER ENERGY DISSIPAIOR INLET MY Storm Filter vault through the inlet pipe. Stormwater in the inlet bay is Figure 1. A typical precast Stormwater Management Storm Filter 12021-B NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 1 of 3 09/08/05 VV::V The Stormwater Management StormFllter ©2005 Stormwater360 then directed through the flow spreader, which traps some floatables, oils, and surface scum, and over the energy dissipator into the filtration bay where treatment will take place. Once in the filtration bay, the stormwater passes through the filter cartridges and is then directed into the outlet bay by an under-drain manifold. The treated water in the outlet bay is then discharged through the outlet pipe to a collection pipe or to an open channel drainage way. Cartridge operation As the water level in the filtration bay begins to rise, stormwater enters the StormFilter cartridge, shown in Figure 2. Stormwater in the cartridge percolates horizontally through the filter media and passes into the cartridge's center tube, where the float valve in the cartridge begins each treatment cycle in a closed (downward) position. As the water level in the filtration bay continues to rise, more water passes through the filter media and into the cartridge's center tube. The air in the cartridge is displaced by the incoming water and purged from beneath the filter hood through the one-way check valve located in the cap. Once the center tube is filled with water (approximately 18 inches deep), there is enough buoyant force on the float to open the float valve and allow the treated water to flow into the under-drain manifold. As the treated water drains from beneath the hood, a vacuum is created. This causes the check valve to close, initiating a siphon that draws polluted water throughout the full surface area and volume of the filter. Thus, the entire filter cartridge is used to filter water throughout the duration of the storm, regardless of the water surface elevation in the filtration bay. Siphonic filtration continues until the water surface elevation drops to the elevation of the scrubbing regulators. At this point, the siphon begins to break and air is quickly drawn beneath the hood through the scrubbing regulators, causing high-energy turbulence between the inner surface of the hood and the outer screen. This turbulence agitates the surface of the filter, releasing accumulated sediments on the outer screen, flushing them from beneath the hood, and CM' HOODGASKEi CENTER rueE SCRUBBING REGULATORS \l'.} UtJFlLTEREO 1NATER UNPER·DRAIN MANIFOlO- <.:A.ST 1Nro VAUl.T PLtNR UFTlNG \AB AIR LOCK CAP WITH CHECK VALVE HOOD ot.JTEP.: MESH UNF IL 1 EREIJ WATER ·,,1..;Ul T FLOOR allowing them to settle to the vault floor. This surface-cleaning mechanism maintains the permeability of the filter surface and enhances the overall performance and longevity of the system. Figure 2. The StormFilter Cartridge Adjustable flow rate Depending on the treatment requirements in your area and on the characteristics of the influent waste stream to your StormFilter system, you may want to adjust the flow rate through the filter cartridges. By decreasing the flow rate through the filter cartridges, the influent contact time with the media is increased and the water velocity through the system is decreased, thus increasing both the level of treatment and the solids removal efficiencies of the filters, respectively. 12021-B NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 2 of 3 09/09/05 VKV The Stormwater Management StormFilter ©2005 Stormwater360 The flow rate through each cartridge can be adjusted to between 2 and 15 gpm using a calibrated restrictor disc at the base of each filter cartridge. For more information, contact our Engineering Department at (800) 548-4667 Cartridge media By using a variety of filter media in the cartridges, the StormFilter can be customized for each site to target and remove the desired levels of sediments, oil and grease, dissolved metals, dissolved phosphorus, and organics. In many cases, a combination of media is recommended to maximize the effectiveness of the stormwater pollutant removal. H>~..,.~~~~~~~,~--... -----2iE--!.~~~.:W,:(~.':'l;.;,;:;- 12021-B NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 3 of 3 09/09/05 VKV The Stormwater Management Storm Filter ©2005 Stormwater360 Research and Development Total Suspended Solids (TSS) Removal Using Different Particle Size Distributions with the Stormwater Management Storm Filter® Introduction Total Suspended Solids (TSS) is commonly used in the stormwater industry as a surrogate pollutant and a measure of Best Management Practice (BMP) performance. Although a practical standard, it is becoming evident that the measurement of TSS can be complex. Historically, parameters such as particle size distribution and specific gravity have not been included as part of Blv1P performance due to the difficulty of measuring these parameters in the field. For example, in a situation where road-sanding material is being washed into a BMP, the removal of 80% of TSS is easily achieved as the majority of the mass of the particles is composed of large sand and grit particles with a high specific gravity. In other situations, the TSS particles are much finer and have lower specific gravity, such as runoff from parking lots and high travel roads that frequently have "gray" water resulting from suspensions of silts, tire and brake dust, and associated fractions of oil and grease at low concentrations. TSS Definitions Stormwater360 has been investigating various particle size distributions (PSDs) for BMP acceptance or verification for various agencies: Washington State Department of Ecology (Ecology), New Jersey Corporation for Advanced Technology (NJ CAT), New Jersey State Department of Environmental Protection (NJ DEP), City of Portland, OR Bureau of Environmental Services (BES). Five different PSDs are presented in Table 1. These particle sizes consist of natural soils (sandy loam and silt loam), manufactured sediment (SIL-CO-SIL 106), and two protocols for evaluating stormwater (APWA and City of Portland BES). The StormFilter was tested with the natural soils and SIL-CO-SIL sediments (finer distribution than the APWA or BES protocols). PSD testing was predominantly conducted in the Stormwater360 laboratory using simulated stormwater in a TSS concentration range between approximately O -350 mg/L. Stormwater360 would recommend that a jurisdiction define TSS with a range of PSDs such as the sandy loam, silt loam, or SIL-CO-SIL 106 used in these laboratory investigations, as opposed to a uniform PSD (i.e. 80% removal of 125 microns). Manufactured sediments are commercially available and can easily be used in comparing different BMPs. The PSDs are idealized at a specific gravity of 2.65, while field studies by Stormwater360 clearly show a high fraction of the TSS as organic in texture (seasonally) with a specific gravity at approximately 1.0. Investigations by Stormwater360 show that PSDs in the Pacific Northwest tend to be characteristic of silt loams and PSDs in the NE tend to be sandy loams or loamy sands, especially where road sanding is practiced. Table 1 has a summary of various PSDs that have been investigated by Stormwater360. For further information, Appendix A contains the graphical representation of each sediment type. Table 2 contains the TSS removal performance wit"i these different sediments. 12021-B NE Airport Way, Portland OR 97220 PD-03-13.4 09/08/05 SID Toll-free: 800.548.4667 StormFilter Performance, TSS 1 of 5 ©2005 Stormwater360 Table 1. Sediment Particle Size Distributions Percent b}'. mass {aeeroximate) Particle Size Sandy Silt SIL-CO-SIL APWA 1999 Portland (microns) loam a loam a 106 b Protocol c BES C 500 -1000 5.0 5.0 0 20.0 10.0 250-500 5.0 2.5 0 10.0 10.0 100-250 30.0 2.5 0 35.0 25.0 50-100 15.0 5.0 20.0 10.0 25.0 2-50 40.0 65.0 80.0 25.0 30.0 1-2 5.0 20.0 0.0 0 0 a Stormwater360 tested Oregon silt and sandy loams for New Jersey Corporation for Advanced Technology verification of TSS performance claims. b Stormwater360 tested SIL-CO-SIL 106 for Washington State Department of Ecology per the Technology Assessment Protocol -Ecology (2001). c Hypothetical particle size distributions from these testing protocols. Particle sizes were presented in a range available in Appendix A; the table represents the least conservative (coarser) approximate particle size range. Table 2. TSS removal using differing earticle size distributions Cartridge Percent Removal (%) Flow Rate SIL-CO-SIL Media Type (gpm) Silt loam a 106" Sandy loam a Standard Perlite 15 72-78 77-80 Standard Perlite 7.5 78-83 Coarse Fine Perlite 15 Coarse Fine Per!ite 7.5 68-75 79-82 Fine Perlite 15 73-78 Fine Perlite 7.5 85-88 CSF® leafb 15 68-79 Coarse Perlite/Zeolite c 15 63-84 ZPG™ 7.5 86-89 Perlite/CSF® leaf 7.5 82-86 Perlite/Metal Rx™ 7.5 89-92 • Linear regression was used in the data analysis, the table presents the upper and lower 95% confidence limits. Data was collected in the Stormwater360 laboratory using simulated stormwater for TSS concentrations between O -350 mg/L. Silt and sandy loam performance data was NJCAT-verified. b Performance of the CSF leaf media was tested using both field and laboratory investigations. Laboratory studies used a Palatine loam sediment. Field data is from the Pacific Northwest. c Performance of the coarse perlite I coarse zeolite media was tested using a Palatine loam sediment. Reported in Total Suspended Solids Removal using StormFilter Technology. 12021-B NE Airport Way, Portland OR 97220 PD-03-13.4 09/08/05 SID Toll-free: 800.548.4667 StormFilter Performance, TSS 2 of 5 ©2005 Stormwater360 References American Public Works Association (APWA). (1999). Protocol for the acceptance of unapproved stormwater treatment technologies for use in the Puget Sound watershed. Washington: APWA Washington Chapter, Stormwater Managers Committee. Retrieved January 3, 2002 from the Municipal Research and Services Center of Washington website: www.mrsc.org/environment/water/water-s/apwa/protocol.htm de Ridder, S. A., Darcy, S. I., and Lenhart, J. H. (2002). Silt loam TSS removal efficiency of a stormwater BMP: Coarse/fine perlite StormFilter cartridge at 28 L/min (7.5 gpm). (Report No. PD-01- 001.1 ). Portland, Oregon: Stormwater Management Inc. de Ridder, S. A., Darcy, S. I., and Lenhart, J. H. (2002). Sandy loam TSS removal efficiency of a stormwater BMP: Coarse perlite StormFilter cartridge at 57 L/min (15 gpm). (Report No. PD-01-002.1). Portland, Oregon: Stormwater Management Inc. New Jersey Corporation for Advanced Technology. (2002). NJCAT Technology Verification Stormwater Management, Inc. Bordentown, NJ: Author. Retrieved July 31, 2003 from: www.resourcesaver.com/file/toolmanager/056F24106.doc Portland Bureau of Environmental Services (Portland BES). (2001 ). Vendor submission guidance for evaluating stormwater treatment technologies. Portland, Oregon: City of Portland, Bureau of Environmental Services. State of Washington Department of Ecology (WADOE). (2002, October). Guidance for Evaluating Emerging Stormwater Treatment Technologies: Technology Assessment Protocol-Ecology (WADOE Publication No. 02-10-037). Retrieved November 11, 2002 from: www.ecv. wa.qov/proqrams/wq/stormwater/newtech/02-10-037%20T APE.pdf Stormwater Management, Inc. (2004). Evaluation of the Stormwater Management StormFilter® cartridge for the removal of SIL-CO-SIL 106, a synthetically graded sand material: ZPG StormFilter cartridge at 28 Umin (7.5 gpm). (Report No. PD-04-006.0). Portland, Oregon: Author. Stormwater Management, Inc. (2003). Influence of flow rate and media gradation on the cost-effective design of stormwater filtration best management practices for the removal of total suspended solids. (Report No. PD-03-006.0). Portland, Oregon: Author. Stormwater Management, Inc. (2000). Total Suspended Solids Removal using StormFilter Technology. Portland, Oregon: Author. Stormwater Management, Inc. (2005). Evaluation of the Stormwater Management StormFilter® cartridge for the removal of SIL-CO-SIL 106, a synthetically graded sand material: Perlite/CSF StormFilter cartridge at 28 Umin (7.5 gpm). (Report No. PE-05-002.0). Portland, Oregon: Author. Stormwater Management, Inc. (2005). Evaluation of the Stormwater Management Storm Filter® cartridge for the removal of SIL-CO-SIL 106, a synthetically graded sand material: Perlite/MetalRx StormFilter cartridge at 28 Umin (7.5 gpm). (Report No. PE-05-004.0). Portland, Oregon: Author. Stormwater360. (2005). Evaluation of the Stormwater Management Storm Filter® cartridge for the removal of SIL-CO-SIL® 106, a standardized silica product: Standard Perlite StormFilter cartridge at 28 Umin (7.5 gpm) (Report No. PE-05-013.0). Portland, Oregon: Author. Stormwater360. (2005). Evaluation of the Stormwater Management Storm Filter® cartridge for the removal of SIL-CO-SIL® 106, a standardized silica product: Standard Perlite StormFilter cartridge at 56 Umin (15 gpm) (Report No. PE-05-014.0). Portland, Oregon: Author. U.S. Silica. (2000, March). Product Data, OK-11 O Unground Silica, Plant: Mill Creek, Oklahoma. Retrieved June 12, 2003, from: · www.u-s-sifica.com/prod info/PDS/Mill Creek/ MiCOK-1102000.PDF 12021-B NE Airport Way, Portland OR 97220 PD-03-13.4 09/08/05 SID Toll-free: 800.548.4667 StormFilter Performance, TSS 3 of 5 ©2005 Stormwater360 APPENDIX A SIL-CO-SIL 106 Particle Size Distribution CLAY SILT SAND 1.0 @-,-------, 0.9 ,...... 0.8 (/) (/) 111 0.7 E >-0.6 .c ,._.. ... 0.5 II) i::: u: 0.4 -i::: II) 0.3 u ... II) c.. 0.2 0.1 0.0 -Observed by SMl ··CJ·, Reported By U.S. Silica 10 Particle Size (um) 0 0 100 "' 0 0 0 0 0 "' N P..rtiole Siz.:! ~nge (um) N V 1000 Figure 1. Particle size distribution for SIL-CO-SIL 106. Sand/silt/clay fractions according to USDA definitions are approximately 20%, 80%, and 0% for SIL-CO-SIL 106, indicating that the texture corresponds to a silt material. Specific gravity is 2.65. Silt Loam Particle Size Distribution ..-.. '-Cl.) 1.0 C U: 0.9 ~ 0 -0.8 Cl) Cl) 0.7 co ~ >, 0.6 ..a C 0.5 0 :.:; 0.4 ::::; ..a ·;:: 0.3 ...... Cl) 0 0.2 Cl.) > 0.1 :;::; C'O Cl.) 0.0 0::: .. ;;;,·/ .· / . ;_~-;;-/ .·· I ·'/ ,... / j ./ I .. ,/ .: / ····1· ... / / . / /.,··· I /.· I / I / 10 100 Particle Size (um) 1000 10000 Figure 2. Particle size distribution (shown as solid line) for bulk soil sample "OSU Silt Loam GPS W. P. #1 O" used for testing. Sand/silt/clay fractions according to USDA definitions are approximately 15%, 65%, and 20%, indicating that the texture corresponds to a silt loam material. Dashed and dotted lines indicate particle size distribution range recommended by Portland BES (2001) and APWA (1999), respectively, for materials used for laboratory evaluation of TSS removal efficiency. 12021-B NE Airport Way, Portland OR 97220 PD-03-13.4 09/08/05 SID Toll-free: 800.548.4667 StormFilter Performance, TSS 4 of 5 ©2005 Stormwater360 Sandy Loam Particle Size Distribution 1.0 -'--0.9 © C u: 0.8 ?J?-0.7 ....... C 0.6 0 :.:; :::i 0.5 .0 ·.:: ..... 0.4 -~ Cl 0.3 © > :.:; 0.2 cc iii 0.1 0::: 0.0 10 100 1000 10000 Particle Size (um) Figure 3. Particle size distribution (shown as solid line) for bulk soil sample "OSU Loam GPS W.P. #13" used for testing. Sand/silUclay fractions according to USDA definitions are approximately 55%, 40%, and 5%, indicating that the texture corresponds to a sandy loam material. Dashed and dotted lines indicate particle size distribution range recommended by Portland BES (2001) and APWA (1999), respectively, for materials used for laboratory evaluation of TSS removal efficiency. 12021-B NE Airport Way, Portland OR 97220 PD-03-13.4 09/08/05 SID Toll-free: 800.548.4667 StormFilter Performance, TSS 5 of 5 ©2005 Stormwater360 Parameter Brief Performance of the Stormwater Management StormFilter® for Removal of Total Phosphorus Phosphorus in the Urban Environment Phosphorus loading to freshwater can promote algal blooms and eutrophication that threaten ecosystems by lowering dissolved oxygen levels. As shown in Figure 1, phosphorus cycles through the environment in forms organic, inorganic and soluble forms. Plonh absorb orthopho$phates: frotn the water ot· s:oil Food Chain Animals obtain organic phosphorus frorn thei1· food Organic: .Short-T 421'111 Phuphorui Cydc Decomposition Soctcl'ia foedi119 on animal wastes or dead pionts and onimois release phosphates Phosphorus: i~ carried by 1·ivers to lakes or the ocean bottom Rock Cycle Inorganic long-Tctl"ltl Phoephorui Cydo Phos:phot'Us is: s:tored in sediment or by the formation of sedimentary rock Stored phosphor'U! is disturbed by currents. pipeline con$i"ruction or eroded by rivers: from uplift«l rock Figure 1. Inorganic and Organic Cycle (RiverWatch, 2001) Total phosphorus (TP), expressed in milligrams/liter is the sum of inorganic phosphate, organic phosphate, and soluble phosphorus (Ortho-P). Organic phosphates are a part of plants and animals, their wastes or decomposing remains. Inorganic phosphorus originates from decomposing natural materials and man-made products. Non-point source runoff (stormwater) increases phosphorus concentrations in lakes and streams by transporting sediment and organic matter (bud shatter, leaves, lawn clippings, etc.) from impervious surfaces. Additional phosphorus sources in stormwater are misapplied fertilizers, some detergents, and animal waste from birds and domestic pets. Phosphorus in urban runoff is typically measured as TP and sometimes Ortho-P is measured as well. The non-soluble portion of the TP is commonly associated with the total suspended solids (TSS). Of this form, the phosphorus can be in an organic or inorganic form. TP concentrations in stormwater are variable but range from 0.01 to 7.3 mg/L (Minton, 2002). Concentrations of Ortho-P in urban runoff are frequently in concentrations ranging from 0.05 to 0.2 mg/L (Wigginton, 1999). USEPA guidelines indicate that Ortho-P concentrations in stream in excess of 0.10 mg/L can trigger algae blooms in fresh water lakes. 12021-B NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 1 of 4 9/9/05 SID StormFilter Parameter Brief, Total Phosphorus ©2005 Stormwater360 Removal of phosphorus can be accomplished by three mechanisms. The first is removal of organic and inorganic P associated with solids. The second is removal by biological uptake by plants or bacteria. The third is through chemical precipitation such as the reaction of Ortho- P with iron to form iron phosphate in aerobic conditions. Depending on the type of treatment system, organic phosphorus can transform to Ortho-P and be released later. For example, leaves trapped in a sump can decompose or fall senescence of wetland plant can release Ortho-P. Results Performance data for removal of total phosphorus were summarized from ongoing field evaluations. These field evaluations are a combination of first and third party investigations. Data were collected from 9 sites located in different geographic locations (primarily from the West Coast (WA, OR, CA) and a single Midwest site) and configured with different media types at different flow rates. Available reports are listed in the reference section. This performance summary focuses on Total Phosphorus removal only. The following information presented in Figure 3 contains data collected since 2001, mostly during the late spring, summer, and fall for total phosphorus removal by the Stormwater Management StormFilter. Fifty-five data points are presented in Figure 3. The mean removal efficiency using linear regression was 62% with 95% confidence limits of 53% and 78% (lower and upper limits, respectively). Sixteen data points that were included in the analysis did not have a positive removal. Overall these systems demonstrated statistically significant removal (P<0.001; 99% probability of net removal) of Total Phosphorus. ::::? 0:, §., 0 ::;E w If) ::, 0 .c 0.. (/) 0 .c. 0... ]§ 0 f-....... C: (L) ::, E UJ 1.5 1.4 -Regression 1.3 - - -95% Confidence Intervals for Regression 1.2 95% Prediction Intervals 1.1 Regression Equation: 1.0 y = 0.38x +D.065 + 0.9 0.8 0.7 0.6 + 0.5 0.4 -- 0.3 0.2 0.1 0.0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 Influent Total Phosphorus EMC (mg/L) ."1.~~l~~~~~~-3110---=~-~-C~!ISl'lii,E-olf.$/al~~~Mea.lll cZ. dii.i'-- 12021-8 NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 2 of 4 9/9/05 SID StormFilter Parameter Brief, Total Phosphorus ©2005 Stormwater360 Figure 3. Total phosphorus removal performance summary collected from 9 sites, in multiple geographic locations, with different media. The linear regression produced an equation of y = 0.38x + 0.065, which translates to a 62% removal with a 95% confidence interval of 53% and 78% (lower and upper limits, respectively). Data was statistically significant with a P < 0.001. Data was current as of July 2003. Table 1. General Site Descrietion WQ Flow No. of Site Descrietion Rate (cfs) Unit Size Media Cartridges Shopping Center 0.503 8 X 16 ZPG,CSF 23 Carwash 0.070 CBSF CSF 2 Hotel 0.165 6x8 CSF 5 Mixed Use 1.600 8 X 16 (2) Perlite/Zeolite 48 Shopping Center 0.033 CBSF Perlite Commercial 0.594 Bx 16 (2) 24;30 Office Perlite/CSF School 0.297 8 X 16 Perlite/Zeo lite 14 Resort 1.650 CIP Perlite/Zeolite 50 Roadway 0.300 6 X 12 ZPG 9 9/9105 SID Stormfilter Parameter Brief, Total Phosphorus Location Vancouver, WA Vancouver, WA Vancouver, WA Sammamish, WA Vancouver, WA Olympia, WA Redmond, WA California Midwest 3 of 4 ©2005 Stormwater360 References Delaware State Department of Natural Resources and Environmental Control. (no date). Urban Stormwater Fact Sheet prepared for Inland Bays Watershed. Dover, DE. Retrieved 11/11/03 from www.dnrec.state.de.us/water2000/Sections/Watershed/ws/fact ib stormwater.pdf Minton, Gary. (2002). Stormwater Treatment: Biological, Chemical, & Engineering Principles. Resource Planning Associates. Seattle, WA. RiverWatch. (2001). Beyond Books Institute of Alberta. (2001). Retrieved on 11/11/03 at www.riverwatch.ab.ca/how_to_monitor/p_info-types.cfm Symons, James, Lee Bradley, Jr., Theodore Cleveland. (2000). The Drinking Water Dictionary. American Water Works Association. McGraw & Hill. New York, NY. Stormwater Management, Inc. (SMI). 2002. Heritage Marketplace Field Evaluation: Stormwater Management StormFilter with CSF Leaf Media. Author. Portland, OR. Stormwater Management, Inc. (SMI). 2003. University Place Field Evaluation: Stormwater Management Storm Filter with Perlite Media. Author. Portland, OR. Stormwater Management, Inc. (SMI). 2003. Overlake School Field Evaluation: Stormwater Management Storm Filter with Perlite/Zeolite Media. Author. Portland, OR. Stormwater Management, Inc. (SMI). 2003. Salmon Creek Plaza Field Evaluation: Stormwater Management CatchBasin StormFilter™ with Coarse Perlite Media. Author. Portland, OR. Stormwater Management, Inc. (SMI). 2003. University Inn at Salmon Creek Field Evaluation: Stormwater Management StormFilter with CSF Leaf Media. Author. Portland, OR. Stormwater Management, Inc. (SMI). 2003. Larry's Carwash: Stormwater Management Storm Filter with CSF Leaf Media. Author. Portland, OR. Stormwater Management, Inc. (SM!). 2003. Saffron Village Field Evaluation: Stormwater Management Storm Filter with Perlite/Zeolite Media. Author. Portland, OR. Stormwater Management Inc (SM!). 2004. Heritage Marketplace Field Evaluation: Stormwater Management StormFilter with ZPG Media (Report No. PE-04-008.0). Portland, Oregon: Author. Stormwater Management Inc (SM!). (2004). Lake Stevens North Field Evaluation: Stormwater Management StormFilter with ZPG Media (Report No. PE-04-001.1 ). Portland, Oregon: Author. Wigginton, Byran 0. James Lenhart. (2000). Using Iron-Infused Media and StormFilter technology for the removal of dissolved phosphorus from stormwater discharges. Water Environment Federation -73rd Annual Conference and Exposition. Anaheim, CA. 12021-B NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 4 of 4 9/9/05 SID StormFilter Parameter Brief, Total Phosphorus ©2005 Stormwater360 Parameter Brief The Stormwater Management Storm Filter® for Removal of Dissolved Metals Introduction Urban Stormwater often contains high levels of soluble and particulate heavy metals. Generated from traffic, industrial facilities, and sometimes residential sources, these metals are frequently found in concentrations that are deleterious to aquatic life and other biota that are dependent on aquatic life as a food sources. Two of the most common metals found both in the water column and sediments are zinc and copper. Zinc tends to exhibit toxicity effects in the fresh water environment and copper exhibits toxicity characteristics in the marine environment. Metals are measured as both total metals and soluble metals. Total metals are the sum of dissolved metals and those metals associated with particulates. Soluble metals are commonly defined as those metals that pass through a 0.45 micron filter. Frequently the soluble metals are in a cationic form in that they posses a net positive charge. However, sometimes the charge of the soluble metal has been satisfied in that it could be associated with sub-micron particles such as ligands or colloids. In this event, the metal may not have a net positive charge. Cation Exchange Cation exchange is the exchange of a cation (positively charged atom) for another cation. The process involves the displacement of an atom within the media matrix by an atom within the water column. The displacement occurs if the incoming atom's affinity for the exchange site is higher than that of the current occupying atom. In general, the physically smaller the ion (when hydrated) and the greater the positive charge the more tightly it will be held by the media. Predictions can be made using a periodic table of elements for commonly found metals in stormwater runoff. Staying within the same row of the table and proceeding left to right produces an increasing affinity for cation exchange. This trend is promoted due to the metal atom remaining in the same valence state (charge) while the overall diameter of the atom decreases. Since the diameter decreases, the "apparent charge" of the atom increases, thus producing the driving mechanism for cation exchange. For most purposes the following affinity series is true: 3+ + 2+ 2+ 2+ 2+ 2+ 2+ 2+ + + Al > H > Zn > Cu > Ni > Fe > Cr > Ca > Mg > K > Na 12021-B NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 1 of 3 9/9/05 SID StormFilter Parameter Brief, Dissolved Metals ©2005 Stormwater360 Primary Exchange Ions within Stormwater Management Filtration Media The media-bound ions utilized with cation exchange filtration are calcium (Ca), magnesium (Mg), potassium (K) and sodium (Na) with calcium and magnesium being the primary exchange ions due to their abundance within the media matrix. As presented above, zinc, copper and iron (as well as others) will force the displacement of the calcium and magnesium ions from the media. Media promoting cation exchange and measured cation exchange capacity (CEC): • CSF® media (93.8 meq/1 OD-grams) • Zeolite (125 meq/100 grams) 12021-B NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 2 of 3 9/9/05 SID StormFilter Parameter Brief, Dissolved Metals ©2005 Stormwater360 Pertormance Summary Table 1. Soluble Metals Removal using organic media {CSF®, Metal Rx). Soluble Coeeer Soluble Zn Site Media Removal Nassco Shipyard CSF 54% Charleston Boatyard CSF 49% East Side Plating Metal Rx 92% Table 2. Total Metals Removal CSF Influent Standard Grade Parameter (mg/I) 15 gpm Total Copper 11 42% Total Lead 0.096 43% Total Zinc 3.56 41% Total 0.0384 49% Chromium Influent (ug/1) Removal 61-401 64% 11,000 (Total) 48% 58-268 43% Configuration (Removal efficiency} CSF Standard Grade 7.Sgem 49% 47% 48% 61% Perlite/Zeolite Coarse Grade 15 gem 41% 42% 31% 57% Influent (ug/1) 191-124 3,560 (Total) ND-569 (Total) Perlite/Zeolite Fine Grade 15 gem 54% 60% 51% 67% Performance data has been summarized from field investigations (Table 1) and from laboratory (Table 2) investigations using captured stormwater runoff from the Charleston Boatyard. References Stormwater Management, Inc. (2001). Comparison of CSF and XFCSF StormFilter Cartridges for Zinc and Total Suspended Solids Removal. Stormwater Management Inc., Technical Update. Portland, OR. Lenhart, James, Scott de Ridder, Paula Calvert, Calvin Noling. (2003). The Removal of Soluble Heavy Metals From Non-Point Source Runoff Originating From Industrial Sources by Leaf Compost Media. Portland, OR. Noiing, Calvin. (2002). The Road to Environmental Performance: A Small Shipyards Experience. 2nd Annual Shipyard Environmental Issues Conference. Portland, OR. Minton, Gary. (2002). Stormwater Treatment: Biological, Chemical, & Engineering Principles. Resource Planning Associates. Seattle, WA Tobiason, Scott, et.al. (2002). Stormwater Metals Removal Testing at Seattle-Tacoma International Airport. Proceedings Water Environment Federation, Watershed 2002 Conference. Hart Crowser. (2002). Final Report (Deliverable 5) Demonstration of Enhanced Filtration for Stormwater Treatment of Shipyard Stormwater San Diego, California. June 2002, 7374- 03. Hart Crowser. (1997) Shipyard AKART Analysis for Treatment of Stormwater. Final Report Prepared for Maritime Environmental Coalition, May 7, 1997. 12021-8 NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 3 of 3 9/9/05 SID StormFilter Parameter Brief, Dissolved Metals ©2005 Stormwater360 Parameter Brief The Stormwater Management StormFilter® for Removal of Oil and Grease Oils and Greases (O&G) are commonly found in stormwater runoff from automobiles and associated anthropogenic activities. O&G appears in many different forms in stormwater runoff: free, dissolved, emulsified, and attached to sediments. Total Petroleum Hydrocarbons (TPH) is the usual analytical measure of fuels, oils and grease (O&G) for stormwater. Typically the concentrations of TPH associated with runoff from streets and parking lots do not exceed concentrations that range from 2.7 to 27 mg/I (FHWA, 1996). Frequently studies are conducted using high concentrations of oil, e.g. 5,000 mg/I in and 250 mg/I out, with c!aims of 95% removal. These concentrations are not representative of those associated with most stormwater runoff. In the event of these high concentrations, then an oil/water separation technology would be required as pretreatment. Removal of TPH by media within the Storm Filter cartridge is accomplished through adsorption. Adsorption is the attraction and adhesion of a free or dissolved contaminant to the media surface. This occurs at the surface as well as within the pores of the media granule. Adsorption requires that a contaminant come in contact with an active surface site on the media and time must be allowed for the contaminant to adhere. These reactions are usually promoted by polar interactions between the media and the pollutant. Adsorption can also occur within the dead end pores and channels of the media but is generally slower than a surface reaction due to limits of the contaminants diffusion into the pore. (Note: The contaminant's molecular size will limit diffusion in that the media's pore opening must be laigei than the dissolved contaminant.) Common!y adsorbed pollutants include: gasoline, oil, grease, TNT, polar organics or organically bound metals and nutrients. The media provided by Stormwater360 for the removal of oils and grease are targeted to remove concentrations of 25 mg/I or less. Media promoting adsorption reactions are the CSF® leaf media, perlite, and granular activated carbon. For concentrations that continually are higher than 10 mg/I, an oil removing accessory such as a sorbent cartridge hood cover is recommended. References Center for Watershed Protection. (2000). A Periodic Bulletin on Urban Watershed Restoration and Protection Tools. Vol. 3, No. 3. Federal Highway Association. (1996). Evaluation and Management of Highway Runoff Water Quality. Publication No. FHWA-PD-96-032. Tenney, Sean, Michael E. Barret, Joseph M. Malina, Randall Charbeneau, George H. Ward. (1995). An Evaluation of Highway Runoff Filtration Systems. Technical Report CRWR 265. Center for Research in Water Resources. 12021-B NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 1 of 1 9/9/05 SID StormFilter Parameter Brief, Oil & Grease ©2005 Stormwater360 Parameter Brief Performance of the Stormwater Management StormFilter® for Removal of Bacteria Microbial contaminants, generally referred to as bacteria, are frequently identified as a pollutant of concern and are common in stormwater runoff from both developed and undeveloped areas. Typically, fecal coliform is used as an indicator that enteric organisms may be present in the stormwater runoff and is used to set water quality standards. Human waste is a common source of fecal coliform; other sources include pets and urban wildlife, native wildlife in rural areas, and to a surprising extent, birds (Burton and Pitt, 2002; Crabill et al., 1999; Grant et al., 2001; Apicella, undated; WPT, 1999). The concentration of indicator microbial contaminants in urban stormwater is routinely measured in the thousands to tens of thousands of organisms per 100 ml range (Burton and Pitt, 2002). Typical federal coliform standards for different water uses range from less than 14 MPN (most probable number) per 100 ml for shellfish beds to less than 200 MPN per 100 ml for water contact recreation. Studies have found that mean fecal coliform concentrations in stormwater runoff may well exceed 20,000 colonies per 100 ml (WPT, 1999). Given the concentrations of bacteria commonly found in stormwater, this could represent a required removal efficiency of 99.9% (WPT, 1999; NRDC, 2001 ). Fecal coliform levels may vary greatly depending on occurrences of dry weather flows, seasonal effects, and impervious cover. Effective reduction to meet federal regulations is best achieved through a technology such as ultraviolet disinfection, ozone disinfection or chlorination. Filtration of Stormwater Available research literature indicates that media filtration of stormwater can achieve a significant and reasonable level of bacteria reduction. Compared to other treatment technologies currently available, a media filter may be considered treatment to the "maximum extent practical". Since media filters, including sand filters, have no astringent properties, the removal of fecal coliform is typically associated with the removal of total suspended solids (TSS). An article from Watershed Protection Techniques (1999) establishes a link between bacteria and sediment. This article suggests 50% of fecal coliform bacteria are attached or adsorbed to larger suspended particles in stormwater. These larger particles can then be settled or filtered out. In general, the article concludes that filters are very effective for removing bacteria associated with TSS. The Stormwater Management StormFilter® is a passive, siphon-actuated, flow-through stormwater filtration system consisting of a structure that houses rechargeable, media-filled filter cartridges. The StormFilter has been demonstrated to be an effective BMP for the removal of TSS (WADOE, 2004). Hence, according to the research presented by Schueler, the StormFilter will provide a reasonable removal of bacteria. It is important to note that sampling to determine the performance of stormwater BMPs with regards to bacteria removal is quite challenging. To ensure minimal dle-off of the organisms 12021-B NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 1 of 3 9/9/05 SID StormFilter Parameter Brief, Bacteria ©2005 Stormwater360 between sampling and analysis, sample hold times are very short (approximately eight hours). In addition, samples must typically be manual grab samples with sterile equipment. Finally, there is such high variability in the level of organisms in the influent and effluent flows that many samples are required to adequately characterize facility performance. This combination of variability, sampling difficulties and required number of samples results in few field data or definitive reports on bacteria removal for any stormwater BMP. Study Results A laboratory study evaluating both bench scale and column tests of the CSF® leaf media demonstrated reasonable removals of both fecal coliform and E. coli. For the bench scale test, the media demonstrated removal efficiencies for fecal coliform on the order of 50 -60% and for E. coli on the order of 65 -75%. Column tests showed average removal for fecal coliform of 47% and E.coli of 30% (Roy, 1995). In a California field study, the StormFilter using perlite/zeolite media achieved an average bacteria reduction of 47% even with a TSS removal of 50%, which is on the low end of the StormFilter performance scale (Caltrans, 2004). Bacteria reduction in future applications may be even greater if source controls such as street sweeping or removal of leaves and other organic matter upstream of the unit are provided. In addition, the StormFilter media-filled cartridges can be operated at lower cartridge flow rates to maximize contact time with the media and improve removal efficiencies. Finally, bacteria removals can be improved by ensuring complete drain down of stormwater devices between storms. This prevents mosquito breeding and eliminates putrefaction of collected po!!utants, thereby limiting the availability of hosts for bacteria. Conclusion In conclusion, given the few data points and limited available literature, the StormFilter provides a level of bacteria removal consistent with other stormwater filtration systems. 12021-B NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 2 of 3 9/9/05 SID StormFilter Parameter Brief, Bacteria ©2005 Stormwater360 References Apicella, G. Undated. Urban runoff, wetlands and waterfowl effects on water quality in Alley Creek and Little Neck Bay. Online: www.stormwateresources.com/Library/071 PLAlleyCreek. pdf Burton Jr., G.A. and R.E. Pitt. 2002. Stormwater Effects Handbook: A toolbox for watershed managers, scientists, and engineers. Lewis, New York. California State Department of Transportation (Caltrans). 2004. BMP Retrofit Pilot Program Final. Report ID CTSW-RT-01-050. Sacramento, CA. Crabill, C., R. Donald, J. Snelling, R. Foust, and G. Southam. 1999. The impact of sediment fecal coliform reservoirs on seasonal water quality in Oak Creek, Arizona. Water Research, 33: 2163-2171. Grant, S.B., B.F. Sanders, A.8. Boehm, J.A. Redman, J.H. Kim, R.D. Mrse, A.K. Chu, M. Gouldin, G.D. McGee, N.A. Gardiner, B.H. Jones, J. Svejkovsky, G.V. Leipzig, and A. Brown. 2001. Generation of Entercocci bacteria in a coastal saltwater marsh and its impact on surf zone water quality. Environmental Science and Technology, 35(12): 2407- 2416. Natural Resources Defense Council (NRDC). Undated. Testing the waters 2001: a guide to water quality at vacation beaches. Online: www.nrdc.org/water/oceans/ttw/chap1 .asp Roy, Steven. 1995. Stormwater Compost Filter Analysis -Bench Scale and Test Column Results. Burlington, Vermont. Washington State Department of Ecology ('vVADOE). (2004). Draft Generni Use Level Designation For Basic (TSS) Treatment the Stormwater Management, lnc.'s StormFilter Using Zeolite-Perlite-Granular Activated Carbon Media And Operating at 7.5 GPM per Cartridge. The final can be retrieved after December 22, 2004 from: www.ecy.wa.gov/programs/wq/stormwater/newtech/media_filtration.html Watershed Protection Techniques (WPT). 1999. Microbes and Urban Watersheds. Watershed Protection Techniques, 3(1): 551 -596. Watershed Protection Techniques (WPT). Undated. Comparative pollutant removal capability of stormwater treatment practices. Watershed Protection Techniques, 2(4): 515 -520. 12021-B NE Airport Way, Portland OR 97220 Toll-free: 800.548.4667 3 of 3 9/9/05 SID StormFilter Parameter Brief, Bacteria ©2005 Stormwater360 ATTACHMENT 11 -NEW OWNER INFOR.l\1ATION 2004 -Carlsbad New Resident Information The City of Carlsbad is delighted to welcome you. In 2004, this lovely seaside community is home to more than 93,000 people in its 42.8 square mile area, with approximately 6.5 miles of beachfront property. For in-depth information about your City, please visit our website at www.ci.carlsbad.ca.us or call 760-434-2821. Brief history Luis.ef\os and Dieguef\os Indians were among the early settlers along our coastal strip. They camped by the ocean in the winter and moved on to higher, cooler ground in the summer. The area we know as Carlsbad was claimed as a territory by Spain, and then by Mexico before becoming a part of the United States. Several excellent books have been written on the colorful history of Carlsbad; among them are Seekers of the Spring, by Marje Howard-Jones and Windows on the Past, by Susan Gutierrez, both of which may be checked out from the library. A 50-year retrospective video is also available at the Carlsbad libraries, celebrating 50 years of service. The mild climate and Jong growing season, provided an ideal location for a variety of agricultural crops including avocados, tomatoes, and strawberries, plus multitudes of colorful flowers such as gladiolas, bird of paradise, clivia, poinsettias and carnations. As late as the mid-1960's the bluffs above the ocean at Carlsbad Boulevard and Palomar Airport Road provided a spectacular display of color when the poinsettias were in full bloom, with a backdrop of the brilliant blue ocean. Carlsbad incorporated in 1952 with an overall area of 7 .5 square miles and population of 6,963. In 1972 the southern unincorporated area known as La Costa was annexed to the city, doubling both the size of the city and its population. A full-service city, Carlsbad has its own Police and Fire departments, as well as city library services. Good planning is a major reason that Carlsbad is such a great place to live, work and play. How do we do it? It al! starts with the Genera! Plan. The Genera! Plan is our blueprint for the future of the City. The complete General Plan is too large and complex to summarize here. But user-friendly information is easy to obtain. The Growth Management Plan is an award-winning component of the General Plan. It works by ensuring that development does not proceed faster than our ability to provide public facilities and services. Open Space and Trails are key to citizens' quality of life. Our open space includes developed parks and natural areas for the native plants and animals of Carlsbad. The trails are both paved and unpaved. If you are interested in learning more about the Carlsbad General Plan, Growth Management Plan, or Open Space and Trails, contact the Planning Department at 760-602-4600, or visit or write us at 1635 Faraday Av., Carlsbad, CA 92008. Resources: Available at 1635 Faraday Av: • 11" x 17" General Plan Map. • A 30 page Guidebook to the General Plan. Digital information: • Carlsbad's trail plan can be viewed online at www.ci.carlsbad.ca.us -select city services, then city Department Directory, Recreation, and under Park Planning, select Citywide Trail Program. • Carlsbad's plan for natural open space can be found at the City's website: www.ci.carlsbad.ca.us -select city services, then Department Directory, Planning (under Community Development), and under Growth and Development, select Habitat Management Plan. • Information on major current development, road and waterline projects www.ci.carlsbad.ca.us -select Construction Updates from the home page. Amended 02/17 /04 can be viewed at () 2004 -Carlsbad New Resident Information Useful information and telephone numbers Abandoned Vehicle Hotline ............................................................................................................ 931-2289 Affordable Housing ......................................................................................................................... 434-2810 After School Programs Homework Zone (Cole, Dove and Centro Libraries) Cyndi Juarez, Vol. Coordinator ..... 602-2877 Kids on Campus (San Marcos Unified School District) .................................................... 752-1281 School's Out (Carlsbad Unified School District) ............................................................... 431-7788 Stay-N-Play (run by City of Carlsbad Recreation Department) ........................................ 729-4876 Animal Control, 2481 Palomar Airport Rd ...................................................................................... 438-2312 Arts Information Line ...................................................................................................................... 434-2904 Beach Conditions ........................................................................................................................... 438-3143 Bicycle License .............................................................................................................................. 931-2141 Available at any Carlsbad Fire Station -every Saturday morning from 7:30 -8:30 a.m. Boat Permits (see Lagoon Permits) Business License ........................................................................................................................... 602-2495 Cable TV (see Utilities) Campground Reservations ................................................................................................... 800-444-PARK Camps for Children Kidz Camp Program (Carlsbad Recreation Department) ................................................. 729-4876 (see quarterly Community Services Guide for additional information, or the City's website) Carlsbad, City of (departments) Administrative Services, 1635 Faraday Av ....................................................................... 602-2410 Arts Office, 2955 Elmwood Av .......................................................................................... 434-2920 Building, 1635 Faraday Av ................................................................................................ 602-2700 City Attorney, 1200 Carlsbad Village Dr ........................................................................... 434-2891 City Clerk, 1200 Carlsbad Village Dr ................................................................................ 434-2808 City Council1200 Carlsbad Village Dr ............................................................................... 434-2830 City Manager, 1200 Carlsbad Village Dr .......................................................................... 434-2821 Community Development, 1635 Faraday Av .................................................................... 602-2710 Economic Development, 1635 Faraday Av ...................................................................... 602-2732 Engineering, 1635 Faraday Av ......................................................................................... 602-2720 Finance, 1635 Faraday Av ................................................................................................ 602-2430 Fire Administration, 2560 Orion Wy .................................................................................. 931-2141 Fire Prevention, 1635 Faraday Av .................................................................................... 602-4666 Geographic Information, 1635 Faraday Av ....................................................................... 602-2434 Housing and Redevelopment., 2965 Roosevelt St... ........................................................ 434-2810 Human Resources, 1635 Faraday Av ............................................................................... 602-2440 Information Technology, 1635 Faraday Av ....................................................................... 602-2450 Amended 02/17 /04 2 2004 • Carlsbad New Resident Information Library (Cole), 1250 Carlsbad Village Dr .......................................................................... 434-2870 Library (Dove), 1775 Dove Ln ........................................................................................... 602-2049 Parks (Administration), 1200 Carlsbad Village Dr ............................................................ 434-2824 Planning, 1635 Faraday Av ............................................................................................... 602-4600 Police Administration, 2560 Orion Wy .............................................................................. 931-2131 Public Works (Administration), 1635 Faraday Av ............................................................. 602-2730 Purchasing, 1635 Faraday Av ........................................................................................... 602-2460 Records Management, 1200 Carlsbad Village Dr ............................................................ 434-2808 Recreation (Administration), 1200 Carlsbad Village Dr .................................................... 434-2826 Risk Management, 1635 Faraday Av ............................................................................... 602-2470 Senior Center, 799 Pine Av .............................................................................................. 602-4650 Streets (Administration), 405 Oak Av ............................................................................... 434-2980 Water & Sewer Billing ....................................................................................................... 602-2420 Carlsbad's "It's Your City" Information Line .................................................................................... 602-2004 Chamber of Commerce, 5934 Priestly Dr ...................................................................................... 931-8400 Citizen's Academy .......................................................................................................................... 434-2800 City Services/facility locations www.ci.carlsbad.ca.us -Facility Finder on home page Computer Labs Adult Computer Lab -Dove Library ................................................................................. 602-2039 Children's Computer Lab -Dove Library .......................................................................... 602-2897 Convention and Visitor's Bureau, 400 Carlsbad Village Dr ........................................................... 434-6093 Crime Prevention ........................................................................................................................... 931-2105 Cultural Facilities/Organizations/Sites Barrio Museum .................................................................................................................. 434-2191 Carlsbad-Oceanside Art League ...................................................................................... 434-8497 Carlsbad Community Theatre ........................................................................................... 931-8709 Carlsbad Cultural Arts Center, 3557 Monroe St.. ............................................................. 918-2082 Carlsbad Playreaders ....................................................................................................... 729-3383 Children's Discovery Museum .......................................................................................... 720-0737 Museum of Making Music ................................................................................................. 438-5996 Sculpture Park, 2955 Elmwood Av William D. Cannon Art Gallery, Dove Library .................................................................... 602-2021 Drivers License -Motor Vehicles Department, 4005 Plaza Dr, Oceanside ........................... 800-777-0133 Employment Opportunities California Employment Development Department (Oceanside) ....................................... 631-6150 City of Carlsbad Job line .................................................................................................... 602,2480 or www.ci.carlsbad.ca.us (City Services/Job Opportunities) See also Hiring Center Environmental Programs .............................................................................................................. 602-4646 or www.carlsbadconserves.org Amended 02/17 /04 3 2004 -Carlsbad New Resident Information Facility locations www.ci.carlsbad.ca.us -Facility Finder on home page Farmers Market .............................................................................................................................. 720-9161 Fire Department -Emergency ................................................................................................................. 911 Non-Emergency ................................................................................................................ 931-2197 Flower Fields .................................................................................................................................. 930-9123 Genealogy Collection (Cole Library) .............................................................................................. 434-2931 Government City of Carlsbad, 1200 Carlsbad Village Dr, 92008 ......................................................... 434-2820 "Bud" Lewis, Mayor Ramona Finnila, Mayor Pro Tern Ann Kulchin, Council Member Matt Hall, Council Member Mark Packard, Council Member Ray Patchett, City Manager State of California Arnold Schwarzenegger, Governor, State Capitol, Sacramento Bill Morrow, Senator, 38th District Mark Wyland, Assemblywoman, 74th District County Board of Supervisors Bill Hom, Supervisor, 5th District United States George Bush, President, The White House 95814 ................... 916-445-2841 local office .......... 619-525-4641 local office ................. 434-7930 local office ................. 631-7670 local office ................. 806-2400 1600 Pennsylvania Av, NW, Washington, DC ................................ 202-456-1414 Dianne Feinstein (D) Senator ....................................................................... 202-224-3841 Barbara Boxer (D) Senator ........................................................................... 202-224-3553 Randy "Duke" Cunningham Representative 50th District -local office ............... 737-8438 Graffiti Hotline ................................................................................................................................ 434-6700 Health Department (County of San Diego) Restaurant-related Issue ............................................................................................ 619-338-2222 Vector Control (rats, mosquitoes) ..................................................................................... 940-2807 Hiring Center .................................................................................................................................. 929-8121 Hospice (See Medical) Housing Department ...................................................................................................................... 434-281 O lnclusionary Housing Information and Waiting List.. ......................................................... 434-2811 Section 8 Housing Information .......................................................................................... 434-2934 Amended 02/17 /04 4 2004 -Carlsbad New Resident Information Lagoon Foundations Agua Hedionda Lagoon Foundation ................................................................................. 431-7397 Batiquitos Lagoon Foundation .......................................................... (Mona Baumgartel) 753-2783 Buena Vista Lagoon Audubon Society .......................................... (Dennis Wysong) 439- 2473 Bird Watching .................................................................................................. 439-2473 Lagoon Permits (Boat) ................................................................................................................... 602-7514 Libraries Centro de lnformacion ...................................................................................................... 729-6907 Cole Library (north Carlsbad) ............................................................................................ 434-2870 Reference Desk (Cole) ........................................................................................ 434-2871 Dove Library -Main Library (south Carlsbad) .................................................................. 602-2049 Reference Desk (Dove) ....................................................................................... 602-2038 Marriage License ............................................................................................................................ 630-1219 Medical Hospice of The North Coast... ........................................................................................... 431-4100 North County Health Services ........................................................................................... 720-7766 Tri-City Medical Center, Oceanside .................................................................................. 724-8411 Scripps Memorial Hospital, Encinitas ............................................................................... 753-6501 Motor Vehicles Department (see Drivers License) Neighborhood Watch -(see Volunteer opportunities -Police) Nev.'~p2~·2 .. s ~:~..,,,,.,q c~.-::""ad) North County Time::, '.'Jr.ear.side Office) ........................................................................... 433-7333 San Diego Union-Tribune (Suus2°ibars Services) .................................................. 1-800-533-8830 Open Space Information ................................................................................................................ 602-4602 Parking Ticket Parks Appeals ............................................................................................................................. 602-2403 Payments ................................................................................................................... 800-553-4412 Cadencia, 3310 Cadencia Calavera Hills, 2997 Glasgow Dr ...................................................................................... 602-4680 Cannon, Carlsbad Village Dr I Cannon Rd Dog Park, Carlsbad Village Dr I Santa Clara Holiday, Chestnut Av I Pio Pico Dr Hosp Grove, Jefferson St I Monroe St La Costa Canyon, Pueblo St I Rana Ct La Costa Heights, 3035 Levante @ Romeria St Laguna Riviera, Kelly I Park Larwin, Carlsbad Village Dr I Santa Clara Carrillo, 6200 Flying L. C. Ln Magee, 258 Beech Av Maxton Brown, 550 Laguna Dr A mended O 2/17 /04 5 2004 -Carlsbad New Resident Information Pio Pico, Pio Pico between Buena Vista & Knowles Poinsettia, 6600 Hidden Valley Rd Rotary, 2900 Washington St Sculpture Park, 2955 Elmwood Av Skatepark, 2560 Orion Wy Stagecoach, 3420 Camino de las Coches ........................................................................ 602-4690 Police Emergency .................................................................................................................................... 911 Pol ice non-Emergency ...................................................................................................... 931-2100 Post Office 2772 Roosevelt St, 92008 (main) ............................................................................. 800-275-8777 1700 Aviara Pkwy 92009 (branch) ............................................................................ 800-275-8777 Pothole Repair ............................................................................................................................... 434-2980 Property Tax Information (Assessor (County of San Diego) 334 Via Vera Cruz, San Marcos ....................................................................................... 940-6868 Recreation Programs ..................................................................................................................... 602-7510 Recycling (see the city's website at www.ci.carlsbad.ca.us -City Services I Recycling) Schools -Serving Carlsbad Students -Elementary and High School - Private and Public Army and Navy Academy (Private), 2605 Carlsbad 81. ................................................... 729-2385 Carlsbad Unified School District (Public) (Admin Offices) 6225 El Camino Real. ............ 331-.5000 ..................................................................................................................... FAX 431-6707 Aviaia Oaks Elementary 6900 Ambrosia Ln ........................................................ 331-6000 Aviara Oaks Middle, 6880 Ambrosia Ln .............................................................. 331-6200 Buena Vista Elementary, 1330 Buena Vista Wy .................................................. 331-5400 Calavera Elementary, 4100 Tamarack Av ........................................................... 331-6300 Carlsbad High School, 3557 Monroe St ............................................................. 3-31-5100 Carlsbad Village Academy, 1640 Madno!ia Av .................................................... 331-5200 Hope Elementary, 3010 Tamarack Av ................................................................. 331-5900 Jefferson Elementary, 3743 Jefferson St... .......................................................... 331-5500 Kelly Elementary, 4885 Kelly Dr .......................................................................... 331-5800 Magnoiia Elementary, 1905 Magnolia Av ............................................................ 331-5600 Pacific Rim Elementary, 1100 Camino de las Ondas .......................................... 331-6200 Valley Middle, 1645 Magnolia Av ......................................................................... 331-5300 Encinitas Union (Public) (Admin Offices) ............................................................... 994- 4300 El Camino Creek Elementary, 7885 Paseo Aliso, Carlsbad ................................ 943-2051 La Costa Heights Elementary, 3035 Levante St, Carlsbad ................................. 944-4375 Mission Estancia Elementary, 3330 Calle Barcelona, Carlsbad ......................... 943-2004 Olivenhain Pioneer Elementary, 8000 Calle Acervo, Carlsbad ........................... 943-2000 San Dieguito Union High School District (public) (Admin Offices) .............................. .436-6136 Diegueno Middle, 2150 Village Park Wy, Encinitas ............................................. 944-1892 La Costa Canyon High School,3451 Camino de los Caches, Carlsbad ............. 434-6136 Oak Crest Middle, 675 Balour Dr, Encinitas ........................................................ 753-6241 San Marcos Unified (public) (Admin Offices) .......................................................... 744-4776 Carrillo Elementary, 2875 Poinsettia Ln, Carlsbad .............................................. 290-2900 La Costa Meadows Elementary, 6889 El Fuerte St, Carlsbad ............................ 290-2121 Amended 02/J 7 /04 6 2004 -Carlsbad New Resident Information San Marcos High School, 1615 W San Marcos Bl San Marcos .......................... 290-2200 San Marcos Middle, 650 W. Mission Rd, San Marcos ........................................ 290-2200 Schools (Local Colleges) California State University San Marcos ............................................................................ 750-4000 MiraCosta Community College, Oceanside ...................................................................... 757-2121 Palomar College (San Marcos) ......................................................................................... 744-3425 National University (Carlsbad campus) ............................................................................ 268-1500 Senior Center, 799 Pine Av ........................................................................................................... 602-4650 Activities ............................................................................................................................ 602-4650 Day-Trippers ..................................................................................................................... 602-7535 Social Security Administration, 1305 Union Plaza Ct, Oceanside .......................................... 800-772-1213 Solid Waste (see Environmental Programs) Solid Waste Collection (see Trash pick-up) Sports Adult Sports ................................................................................................... , ................... 434-2973 Adult Sports Info Line ........................................................................................................ 602-7520 Swimming Pool (see Swim Complex) Youth Sports ..................................................................................................................... 434-2971 Storm Water Program .................................................................................................................... 602-2799 County Storm Water Hot Line .................................................................................... 888-846-0800 or www.carlsbadconserves.org. Street Lights ................................................................................................................................... 434-2980 Street Sweeping ............................................................................................................................. 434-2980 Summer Camps for Children (see Camps for Children) Swim Complex, 3401 Monroe St ................................................................................................... 602-4685 Telephone Service (See Utilities) TIP (Trauma Intervention) .............................................................................................................. 931-2104 Trails (public) .................................................................................................................................. 434-2978 Bicycle Trails ..................................................................................................................... 602-2745 Transportation Amtrak -235 S Tremont, Oceanside ........................................................................ 800-872-7245 McClellan-Palomar Airport, 2198 Palomar Airport Rd, Carlsbad ..................................... 431-4646 Ridelink Carpools .................................................................................................... 619-237-POOL Amended 02/17 /04 7 2004 -Carlsbad New Resident Information North County Transit District Bus Service ............................................................................................................ 967-2828 Coaster Commuter Train ................................................................................ 800-262-7837 Coaster Stations in Carlsbad Downtown -State St just north of Grand Av Poinsettia -Avenida Encinas just north of Poinsettia Ln Lifeline North County (Lift Transportation) ............................................................ 726-1111 Trash pick-up ................................................................................................................................. 929-9400 Bulky Item Collections ....................................................................................................... 434-2980 Hazardous Waste ............................................................................................................. 929-9400 Holiday Schedule .............................................................................................................. 929-9400 Illegal Trash ....................................................................................................................... 602-2703 United Way of San Diego County (Customer Service) ........................................................ 1-888-448-6673 Utilities Cable TV Adelphia (Customer Service and Repair) ............................................................ 931-7000 Electricity and Gas San Diego Gas & Electric ............................................................................. 800-411-7343 Telephone SBC California -Pacific Bell (Customer Guide Information Line) ............. 1-800-214-8433 Carlsbad water and trash pick-up ........................................................................ 602-2420 Coast Waste Management (see Trash Pick-Up) Olivenhain Water District (portion of southeast Carlsbad) .................................. 753-6466 Vallecitos Water District (portion of southeast Carlsbad) .................................... 744-0460 Visitors and Convention Bureau, 400 Carlsbad Village Dr ............................................................ 434-6093 Volunteer opportunities Voting City of Carlsbad Volunteer Office ...................................................................................... 434-2929 Sign up for an informative 1-11:, hour orientation to learn about the full range of rewarding opportunities to volunteer at our parks, Police Department, libraries, recreation programs, art museum, Senior Center, literacy programs, and more Where to register ............................................................................................................... 434-2808 Where to vote ................................................................................. 858-694-3400 or 858-565-5800 Water Conservation Programs (see Environmental Programs) Wildlife U. S. Fish & Wildlife SeiVice ............................................................................................. 431-9440 Zip Codes Addresses on the north side of Palomar Airport Rd to northern City limits = 92008 Addresses on the south side of Palomar Airport Rd to southern City limits = 92009 Amended 02/17 /04 8 ATTACHMENT 12-SCHEDULE & COSTS FOR MAINTENANCE OF POST CONSTRUCTION BMP'S, MAINTENANCE AND TRAINING FORMS U) ::s::: U) <{ .... ST ART CONSTRUCTION BLACK RAIL CONSTRUCTION TIMELINE DATE COMPLETE CONSTRUCTION NOTE: THIS TIMELINE IS PRELIMINARY AND WILL BE UPDATED AS PROJECT PROCESSING PROGRESSES ATTACHMENT 12 SCHEDULE & COST FOR MAINTENANCE STORMWATER MANAGEMENT PROGRAM BMPs SCHEDULE/M~NTENANCE COST RESPONSIBLE PARTY METHOD 1. INLET/OUTLET INSPECT TEMPORARY MEASURES $100 PER EACH OUTLET/INLET CITY OF CARLSBAD PROTECTION PRIOR TO THE START OF THE RAINY PER EACH INSPECTION MAINTENANCE DEPARTMENT SEASON (760) 434-2980 405 OAK AVENUE DURING RAINY SEASON: CARLSBAD, CA 92008 A) INSPECT AFTER EVERY HEAVY RAINFALL B) ONCE PER WEEK OUTLET: INSPECT FOR BLOCKAGES AT OUTFALL AND/OR SCOUR/EROSION AT RIP RAP. REMOVE BLOCKAGES AS NECESSARY, AND ADD ADDITIONAL ROCK OR FILTER BLANKET TO REDUCE/ELIMINATE EROSION. INLET: CHECK FOR ANY TRASH/DEBRIS/SEDIMENT AT INLET OPENING THAT MAY INTERRUPT STORMWATER FLOWS. REMOVE AS NECESSARY 2. STORMWATER 360 INSPECT TEMPORARY MEASURES $100 PER EACH UNIT STORMFIL TER PRIOR TO THE START OF THE RAINY PER EACH INSPECTION SEASON REPLACE CARTRIDGES AS DURING RAINY SEASON: NEEDED THE CURRENT OWNER IS A) INSPECT AFTER EVERY HEAVY TRANS WEST HOUSING, 9968 RAINFALL $210 /PER CARTRIDGE HIBERT STREET, SUITE 102, SAN B) ONCE PER WEEK VERIFY W/MANUFACTURER DIEGO CALIFORNIA 92131. SEE THE ATTACHED OPERATION AND PHONE (858) 653-3003. CONTACT: PAUL O'BOYLE. UPON MAINTENANCE MANUAL FROM THE SALE OR TRANSFER OF MANUFACTURER THAT DETAILS IT IS ANTICIPATED BASED ON PROPERTY, A (HOA) RECOMMENDED MAINTENANCE THE MANUFACTURER'S HOMEOWNER'S ASSOCIATION FREQUENCIES AND INCLUDES A RECOMMENDATIONS THAT THE WILL BE THE RESPONSIBLE MAINTENANCE AND INSPECTION DATA FILTER CARTRIDGES WILL NEED PARTY. SHEET. ALSO, A COMPLETE DRAIN TO BE REPLACED ONCE EVERY DOWN OF THE UNIT WILL BE TWO YEARS. AT $210 PER REQUIRED BETWEEN STORMS TO CARTRIDGE FOR 12 LIMIT THE AVAILABILITY OF HOSTS CARTRIDGES COST WOULD BE FOR BACTERIA. $2,520 EVERY TWO YEARS. 3. STORM DRAIN INSPECT TEMPORARY MEASURES SYSTEM PRIOR TO THE START OF THE RAINY $100 PER EACH INSPECTION CITY OF CARLSBAD SEASON MAINTENANCE DEPARTMENT (760) 434-2980 DURING RAINY SEASON: 405 OAK AVENUE A) INSPECT AFTER EVERY HEAVY RAINFALL CARLSBAD, CA 92008 B) ONCE PER WEEK IN ADDITION TO ITEM 1, INSPECT FOR ANY BLOCKAGES OR DAMAGE TO STORM DRAIN CLEANOUT, THAT MAY AFFECT THE FLOW OF STORMWATER IN THE SYSTEM. 4. STREET SWEEPING INSPECT PRIOR TO FORECAST RAIN $100 PER HOUR PLUS THE CURRENT OWNER IS DAILY DURING EXTENDED RAIN OPERATOR COSTS. TRANS WEST HOUSING, 9968 EVENTS, AFTER RAIN EVENTS, HIBERT STREET, SUITE 102, SAN WEEKLY DURING THE RAINY SEASON, DIEGO CALIFORNIA 92131. AND AT TWO-WEEK INTERVALS PHONE (858) 653-3003. DURING THE NON-RAINY SEASON. CONTACT: PAUL O'BOYLE. UPON IF TRASH AND/OR SEDIMENT IS SALE OR TRANSFER OF ENCOUNTERED ON THE PAVEMENT OR PROPERTY, A (HOA) IN THE STREET GUTIERS SCHEDULE HOMEOWNER'S ASSOCIATION WILL BE THE RESPONSIBLE STREET SWEEPING TO REMOVE PARTY. POLLUTANTS. 5. STORM DRAIN INSPECT ONCE EVERY 6 MONTHS $50 PER INSPECTION THE CURRENT OWNER IS SIGNAGE MINIMUM. TRANS WEST HOUSING, 9968 HIBERT STREET, SUITE 102, SAN DIEGO CALIFORNIA 92131. IF PAINT OR TILE IS WEATHERED OR PHONE (858) 653-3003. FADED, REPLACE OR REPAINT AS CONTACT: PAUL O'BOYLE. UPON NEEDED. SALE OR TRANSFER OF PROPERTY, A (HOA) HOMEOWNER'S ASSOCIATION WILL BE THE RESPONSIBLE PARTY. MAINTENANCE INSPECTION CHECKLIST IDATE --~IBMP INSPECTED -!PERFORMED BY !COMMENTS/ RECOMMENDATIONS ___ ~-~----·· ==i ,NORKER TRAINING LOG GA~~] PRINT NAME I TITLE l . . SIGNATURE I TRAINED BY I r:~~~~s I 10/14/2003 Robert D. Dentino Engineer of Work SWRCB n/a A~'~t...lT~~U® ~~.,,.ii;;~!! Operation and Maintenance STORMWATER ------ SOLUTIONS"° The Stormwater Management StormFilter® Vault, Cast-In-Place, and Linear Units Important: These guidelines should be used as a part of your site storm water management plan. Description The Stormwater Management StormFilter® (StormFilter) is a passive, flow-through, stormwater filtration system. The system is comprised of one or more vaults that house rechargeable, media-filled, filter cartridges. The StormFilter works by passing stormwater through the media-filled cartridges, which trap particulates and adsorb materials such as dissolved metals and hydrocarbons. Once filtered through the media, the treated stormwater is directed to a collection pipe or discharged into an open channel drainage way. The StormFilter is offered in multiple configurations, including vault, linear, catch basin, manhole, and cast-in-place. The vault, linear, manhole, and catch basin models utilize pre-manufactured units to ease the design and installation processes. The cast-in-place units are customized for larger flows and may be either covered or uncovered underground units. Purpose The StormFilter is a passive, flow-through, stormwater filtration system designed to improve the quality of stormwater runoff from the urban environment before it enters receiving waterways. It is intended to function as a Best Management Practice (BMP) to meet federal, state, and local requirements for treating runoff in compliance with the Clean Water Act. Through independent third party studies, it has been demonstrated that the StormFilter is highly effective for treatment of first flush flows and for treatment of flow-paced flows during the latter part of a storm. in general, the StormFilter's efficiency is highest when pollutant concentrations are highest. The primary non-point source pollutants targeted for removal by the StormFilter are: suspended solids (TSS}, oil and grease, soluble metals, nutrients, organics, and trash and debris. Sizing The StormFilter is sized to treat the peak flow of a water quality design storm. The peak flow is determined from calculations based on the contributing watershed hydrology and from a design storm magnitude set by the local stormwater management agency. The particular size of a StormFilter unit is determined by the number of filter cartridges (see Figure 1) required to treat this peak flow. The flow rate through each filter cartridge is adjustable, allowing control over the amount of contact time between the influent and the filter media. The maximum flow rate through each cartridge can be adjusted to between 5 and 15 gpm using a calibrated restrictor disc at the base of each filter cartridge. Adjustments to the cartridge flow rate will affect the number of cartridges required to treat the peak flow. ~ .. ;i:.~;~a~lt.l~-:;i;..--:,,.~_..,._.. ... =.,~~=-~~~-~-.~l',l",ia,m,U!Hi-:--.i-,'!=~- ©2QQ6 CONTECH Stormwater Solutions Toll-free: 800.548.4667 1 of 9 contechstormwater.com Vault, GIP and Linear StormFilter Operation and Maintenance Guidelines Basic Function The StormFilter is designed to siphon stormwater runoff through a filter cartridge containing media. A variety of filter media is available and can be customized for each site to target and remove the desired levels of sediments, dissolved phosphorus, dissolved metals, organics, and oil and grease. In many cases, a combination of media is recommended to maximize the effectiveness of the stormwater pollutant removal. Figure 1. The StormFi!ter Cartridge Priming System Function When stormwater in the StormFilter unit enters a StormFilter cartridge, it percolates horizontally through the cartridge's filter media and collects in the center tube of the cartridge, where the float in the cartridge is in a closed (downward) position. Water continues to pass through the filter media and into the cartridge's center tube. The air in the cartridge is displaced by the water and purged from beneath the filter hood through the one-way check valve located in the cap. Once the center tube is filled with water (approximately 18 inches deep), there is enough buoyant force on the float to open the float valve and allow the treated water in the center tube to flow into the under-drain manifold. This causes the check valve to close, initiating a siphon that draws polluted water throughout the full surface area and volume of the filter. Thus, the entire filter cartridge is used to filter water throughout the duration of the storm, regardless of the water surface elevation in the unit. This siphon continues until the water surface elevation drops to the elevation of the hood's scrubbing regulators. The cartridges are connected to the under- drain manifold with a plastic connector. Since some media used is potentially buoyant, a threaded connector affixed to the under-drain manifold (with glue or other adhesive) is necessary to ensure that the cartridge isn't lifted out of place. For the heavier compost media, a slip connector is used. The StormFilter is also equipped with flow spreaders that trap floating debris and surface films, even during overflow conditions. Depending on individual site characteristics, some systems are equipped with high and/or base flow bypasses. High flow bypasses are installed when the calculated peak storm event generates a flow that overcomes the overflow capacity of the system. This is especially important for precast systems. Base flow bypasses are sometimes installed to bypass continuous inflows caused by ground water seepage, which usually do not require treatment. All StormFilter units are designed with an overflow. The overflow operates when the inflow rate is greater than the treatment capacity of the filter cartridges. ©2006 CONTECH Stormwater Solutions Toll-free: 800.548.4667 2 of 9 contechstormwater.com Vault, GIP and Linear StormFilter Operation a·~d Maintenance Guidelines Maintenance Guidelines The primary purpose of the StormFilter is to filter out and prevent pollutants from entering our watervvays. Like any effective filtration syst~m. periodically these pollutants must be removed to restore the StormFilter to its full efficiency and effectiveness. Maintenance requirements and frequency are dependent on the pollutant load characteristics of each site. Maintenance activities may be required in the event of a chemical spill or due to excessive sediment loading from site erosion or extreme storms. It is also good practice to inspect the system after severe storm events. Types of Maintenance Presently, procedures have been developed for two levels of maintenance: • Inspection/minor maintenance • Major maintenance. Inspection/minor maintenance activities are combined since minor maintenance does not require special equipment and typically little or no materials are in need of disposal. Inspection/minor maintenance typically involves: • Inspection of the vault itself • Removal of vegetation and trash and debris. Major maintenance typically includes: • Cartridge replacement • Sediment removal Important: Applicable safety (OSHA) and disposal regulations should be followed during all maintenance activities. Maintenance Activity Timing Two scheduled inspections/maintenance activities should take place during the year. First, an inspection/minor maintenance activity should be done. During the minor maintenance activity (routine inspection, debris removal), the need for major maintenance should be determined and, if disposal during major maintenance will be required, samples of the sediments and media should be obtained. Second, if required, a major maintenance activity (replacement of the filter cartridges and associated sediment removal) should be performed. In addition to these two scheduled activities, it is important to check the condition of the StormFilter unit after major storms for damage caused by high flows and for high sediment accumulation that may be caused by localized erosion in the drainage area. It may be necessary to adjust the maintenance activity schedule depending on the actual operating conditions encountered by the system. In general, minor maintenance activities will occur late in the rainy season, and major maintenance will occur in late summer to early fall when flows into the system are not likely to be present. Maintenance Activity Frequency The primary factor controlling timing of maintenance for the StormFilter is sedimentation. ~~~~~~~~~==~ ©2006 CONTECH Stormwater Solutions Toll-free: 800.548.4667 3 of 9 contechstormwater.com Vault, CIP and Linear StormFilter Operation and Maintenance Guidelines A properly functioning system will remove solids from water by trapping particulates in the porous structure of the filter media. The flow through the system will naturally decrease as more and more solids are trapped. Eventually the flow through the system will be low enough to require replacement of the cartridges. It may be possible to extend the usable span of the cartridges by removing sediment from upstream trapping devices on an as-needed basis in order to prevent material from being re-suspended and discharged to the system. Site conditions greatly influence maintenance requirements. StormFilter units located in areas with erosion or active construction should be inspected and maintained more often than those in fully stabilized areas. The maintenance frequency may be adjusted as additional monitoring information becomes available during the inspection program. Areas that develop known problems should be inspected more frequently than areas that demonstrate no problems, particularly after large storms. Ultimately, inspection and maintenance activities should be scheduled based on the histoiic records and characteristics of an individual StormFilter system. It is recommended that the maintenance agency develop a database to properly manage StormFilter maintenance programs. Prior to the development of the maintenance database, the following maintenance frequencies should be followed: Inspection/minor maintenance • One time per year • After Major Storms Major maintenance • One time per year • In the event of a chemical spill Frequencies should be updated as required. The recommended initial frequency for inspection/minor maintenance is two times per year for precast units. StormFilter units should be inspected after all major storms. Sediment removal and cartridge replacement on an annual basis is recommended until further knowledge is gained about a particular system. Once an understanding of site characteristics has been established, maintenance may not be needed for one to two years, but inspection is warranted. Maintenance Methods Inspection/Minor Maintenance The primary goal of a maintenance inspection is to assess the condition of the cartridges relative to the level of sediment loading. It may be desirable to conduct this inspection during a storm to observe the relative flow through the filter cartridges .. If the submerged cartridges are severely plugged, large amounts of sediments will be present and very little flow will be discharged. from the drainage pipes. If this is the case, it is likely that the cartridges need to be replaced. Warning: In the case of a spill, the worker should abort maintenance activities until the proper guidance is obtained. Notify the local hazard control agency and CONTECH Stormwater Solutions immediately. To conduct an inspection and/or minor maintenance: Important: Maintenance must be performed by a utility worker familiar with StormFilter units. 1. If applicable, set up safety equipment to protect pedestrians from fall hazards due to open vault doors or when work is being done near walkways or roadways. 2. Visually inspect the external condition of the unit and take notes concerning defects/problems. ©2006 CONTECH Stormwater Solutions Toll-free: 800.548.4667 4 of 9 contechstormwater.com Vault, GIP and Linear StormFllter Operation and Maintenance Guidelines 3. Open the doors to the vault and allow the system to air out for 5-10 minutes. 4. Without entering the vault, inspect the inside of the unit, including components. 5. Take notes about the external and internal condition of the vault. Be sure to record the level of sediment build-up on the floor of the vault, in the forebay, and on top of the cartridges. If flow is occurring, note the level of water and estimate the flow rate per drainage pipe. Record all observations. 6. Remove large loose debris and trash using a pole with a grapple or net on the end. 7. Close and fasten the door. 8. Remove safety equipment. 9. Make notes about the local drainage area relative to ongoing construction, erosion probiems, or high loading of other materials to the system. 10. Finally, review the condition reports from the previous minor and major maintenance visits, and schedule cartridge replacement if needed. Major Maintenance Depending on the configuration of the particular system, a worker may be required to enter the vault to perform some tasks. Important: If vault entry is required, OSHA rules for confined space entry must be followed. Filter cartridge replacement should occur during dry weather. It may be necessary to plug the filter inlet pipe if base flows exist. Standing water present in the vault should be regarded as polluted and should be contained during this operation by temporarily capping the manifold connectors. ©2006 CONTECH Stormwater Solutions Replacement cartridges will be delivered to the site. Information concerning how to obtain the replacement cartridges is available from CONTECH Stormwater Solutions. Warning: In the case of a spill, the worker should abort maintenance activities until the proper guidance is obtained. Notify the local hazard control agency and CONTE CH Stormwater Solutions immediately. To conduct cartridge replacement and sediment removal maintenance: 1. If applicable, set up safety equipment to protect pedestrians from fall hazards due to open vault doors or when work is being done near walkways or roadways. 2. Visually inspect the external condition of the unit and take notes concerning defects/problems. 3. Open the doors to the vault and allow the system to air out for 5-10 minutes. 4. Without entering the vault, give the inside of the unit, including components, a general condition inspection. 5. Make notes about the external and internal condition of the vault. Give particular attention to recording the level of sediment build-up on the floor of the vault, in the forebay, and on top of the internal components. 6. Remove large loose debris and trash using a pole with a grapple or net on the end. 7. Using a boom, crane, or other device (dolly and ramp), offload the replacement cartridges (up to 150 lbs. each) and set aside. 8. Remove used cartridges from the vault using one of the following methods: 5 of 9 contechstormwater.com Vault, CIP and Linear StormFilter Operation and Maintenance Guidelines Important: This activity will require that workers enter the vault to remove the cartridges from the drainage system. Method 1: a. Using an appropriate sling, attach the cable from the boom, crane, or tripod to the cartridge being removed. Contact CONTE CH Stormwater Solutions for specifications on appropriate attachment devices. This activity will require that workers enter the vault to remove the cartridges from the drainage system and place them under the vault opening for lifting. Important: Note that cartridges containing media other than the leaf media require unscrewing from their threaded connectors. Take care not to damage the manifold connectors. This connector should remain installed in the manifold and capped if necessary. b. Remove the used cartridges (250 lbs. each) from the vault. Important: Care must be used to avoid damaging the cartridges during removal and installation. The cost of repamng components damaged during maintenance will be the responsibility of the owner unless CONTECH Stormwater Solutions performs the maintenance activities and damage is not related to discharges to the system. c. Set the used cartridge aside or load onto the hauling truck. d. Continue steps a through c until all cartridges have been removed. Method 2: a. Unscrew the cartridge cap. b. Remove the cartridge hood. c. Tip the cartridge on its side. Important: Note that cartridges containing media other than the leaf media require unscrewing from their threaded connectors. Take care not to damage the manifold connectors. This connector should remain installed in the manifold and capped if necessary. d. Empty the cartridge onto the vault floor. e. Set the empty, used cartridge aside or load onto the hauling truck. f. Continue steps a through e until all cartridges have been removed. 9. Remove deposited sediment from the floor of the vault and, if large amounts are present, from the forebay. This can usually be accomplished by shoveling the sediment into containers, which, once full, are lifted mechanically from the vault and placed onto the hauling truck. If Method 2 in Step 8 is used to empty the cartridges, or in cases of extreme sediment loading, a vactor truck may be required. 10. Once the sediments are removed, assess the condition of the vault and the condition of the manifold and connectors. The connectors are short sections of 2-inch schedule 40 PVC, or threaded schedule 80 PVC that should protrude above the floor of the vault. a. ff required, apply a light coating of FDA approved silicon grease to the outside of the exposed portion of the connectors. This ensures a watertight connection between the cartridge and the drainage pipe. b. Replace any damaged connectors. 11. Using the boom, crane, or tripod, lower and install the new cartridges. Once ©2006 CONTE CH Stormwater Solutions Toll-free: 800.548.4667 6 of 9 contechstormwater.com Vault, CIP and Linear StormFilter Operation and Maintenance Guidelines again, take care not to damage connections. 12. Close and fasten the door. 13. Remove safety equipment. 14. Make notes about the local drainage area relative to ongoing construction, erosion problems, or high loadings of other materials to the system. 15. Finally, dispose of the residual materials in accordance with applicable regulations. Make arrangements to return the used cartridges to CONTECH Stormwater Solutions. Related Maintenance Activities (Performed on an as-needed basis) StormFilter units are often just one of many components in a more comprehensive stormwater drainage and treatment system. The entire system may include catch basins, detention vaults, sedimentation vaults and manholes, detention/retention ponds, swales, artificial wetlands, and other miscellaneous components. In order for maintenance of the StormFilter to be successful, it is imperative that all other components be properly maintained. The maintenance/repair of upstream facilities should be carried out prior to StormFilter maintenance activities. In addition to considering upstream facilities, it is also important to correct any problems identified in the drainage area. Drainage area concerns may include: erosion problems, heavy oil and grease loading, and discharges of inappropriate materials. ©2006 CONTECH Stormwater Solutions Material Disposal The accumulated sediment found in stormwater treatment and conveyance systems must be handled and disposed of in a manner that will not allow the material to affect surface or ground water. It is possible for sediments to contain measurable concentrations of heavy metals and organic chemicals (such as pesticides and petroleum products). Areas with the greatest potential for high pollutant loading include industrial areas and heavily traveled roads. Sediments and water must be disposed of in accordance with all applicable waste disposal regulations. It is not appropriate to discharge untreated materials back to the stormwater drainage system. Part of arranging for maintenance to occur should include coordination of disposal of solids (landfill coordination) and liquids (municipal vacuum truck decant facility, local wastewater treatment plant, on-site treatment and discharge). Owners should contact the local public works department and inquire about how the department disposes of their street waste residuals. CONTECH Stormwater Solutions will determine disposal·· methods or reuse of the media contained in the cartridges. If the material has been contaminated with any unusual substance, the cost of special handling and disposal will be the responsibility of the owner. contechstormwater.com Vault, CIP and Linear StormFilter Operation and Maintenance Guidelines StormFilter Minor Maintenance and Inspection Data Sheet Personnel: _______________ _ Location: ________________ _ System Size: _____ _ System Type: Vault Cast-In-Place Linear System Observations Media Months in Service: _________________________ _ Oil and Grease in Forebay: Yes No Sediment Depth in Forebay: _________________________ _ Sediment Depth on Vault Floor: Structural Damage: Estimated Flow from Drainage Pipes (if available): Cartridges Submerged: Yes No How Deep: StormFilter Minor Maintenance Activities {check off if done and give description) Trash and Debris Removal: Minor Structural Repairs: Drainage Area Report Excessive Oil and Grease Loading: Yes No Source: ________________ _ Sediment Accumulation on Pavement: Yes No Source: Erosion of Landscaped Areas: Yes No Source: ______________ _ Items Needing Further Work: Other Comments: Review the condition reports from the previous minor and major maintenance visits. ~~~~~--~.,....-~~----n~---~-~-~~=""""~~~ ..... ~~=e=""""""""~-~~1711Wl"~~~~~~-•=a~"""-~'~~ ©2006 CONTECH Stormwater Solutions Toll-free: 800.548.4667 8of9 contechstormwater.com Vault, CIP and Linear StormFilter Operation and Maintenance Guidelines StormFilter Major Maintenance/Cartridge Replacement Data Sheet Personnel: _______________ _ Location: ________________ _ System Size: ______ _ System Type: Vault Cast-In-Place Linear List Safety Procedures and Equipment Used: ------------------- System Observations Media Months in Service: Oil and Grease in Forebay: Yes No Sediment Depth in Forebay: Sediment Depth on Vault Floor: Structural Damage: Drainage Area Report Excessive Oil and Grease Loading: Yes No Source: Sediment Accumulation on Pavement: Yes No Source: Erosion of Landscaped Areas: Yes No Source: __ _ Storm Filter Cartridge Replacement Maintenance Activities Remove Trash and Debris: Yes No Details: Replace Cartridges: Yes No Details: --------------------- Sediment Removed: Yes No Details: __ _ Quantity of Sediment Removed (estimate?): __________________ _ Minor Structural Repairs: Yes No Details: Residuals (debris, sediment) Disposal Methods: Notes: ©2006 CONTECH Stormwater Solutions Toll-free: 800.548.4667 9 of 9 contechstormwater.com Vault, GIP and Linear StormFilter Operation and Maintenance Guidelines ATTACHMENT 13-POST CONSTRUCTION BMP PLANS I i ' I ------------------------------- 90 120 LEGEND 0/RECllON OF flOJII CONCRE!E ENERGY 0/SSIPATO/i' S11JRJIJ/IA 1H? J60 STO/i'AIRL IE!? RIP RAP TYPE 8-2 ct/RB INLET !}-,f-{ OX!o' PRE-CAST S11JRIJRL1FR !,Y !2 CARlR!f)CES(PERl/!£,/?EotJ1E) SORSI} 0-40* SlJRSIJ 0 -2" * AS J/00/REIJ BY CITY OF CARLS8AI) STANOAR!JS *"JHlll Sl/JRJl!'/Alll? 5lCNACE -- { 1 I I I I 4 j I 1 I ' I I I I ' I EA ENGINEER OF WORK r-t 7-9-f 4-ENGINEERING LANO PLANJ\/WC -Cl/fl ENCl.l\lilli'/NC -Sl/R//El'INC 440 STA 1£ PLACE -ESCCW!}/!}O, CA 92029 (760) 7-18 !AX (7?f:Z:O ~2-::- BERT D. DENTINO RCE: 45629 EXP: 12/06 DA TE (Kp. 12-31-Qf, * DATE NITJA ENGJ NEER Of WORK REVISION DESCRIPTION DATE NITJA DATE NIT! SOURCE CONTROL }JVP's 0 RIP.RAP ElllC/ENT //?RICA 17/AV Si'STEJ.IS /WIJ ® LANOSCAPE IJESlCN (ALL JIANVFACll/REO Slll0£.S; TYPICAl) . r?>. STORA/ DRAIN SICNAG: i\!O OVJIPJNG -ORA/NS l::.J TO PAC/RC OCEAN Sl(OR£l/NE' \'.t) All!OAIOB!LE VSE (IN Z£PHYR COVRT &-PR/VA ff LOTS) @ Slli'EET S/JEEP/NG _ 11,/f'ERVIOIJS AREAS A/C PAJ/EIJENT PCC (CROSS CVT!FJi; S/0£/l'ALKS, OR/1£/fA Y AP/?O'l.5; AIR BLO!IN J/0/?Ti!R (0-75 BROW fJ/TCII) === ALL OlllER AREAS ARE PERWOVS. ( AIJ,Q/llONAL /AIPE1?110(JS AREAS 1/fLL BE /NlRO!J(ICE!J OORING 711£ PREC!SF 6WAO/NC PHASE F& 1711$ PROECT I.£ flO{JSE ROOF TOPS ANO LOT ORI/IEJfA K,; 50% NAX LOT COIHi'ACE) "AS -BUJLT" APPROVED CONRAD C. HAMMANN CITY ENGINEER PE 33069 EXPIRES 6 30 06 DATE DWN BY: PROJECT NO. DRAWING NO. ··-----~-- ·-i--1---------------------------------------i ! I I CT-03-06 OTHER APPROVAL CITY APPROVA CHKD BY: __ _ RVWD BY: 434-9A I I I I