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HomeMy WebLinkAboutCT 03-01-01; LA COSTA RESORT & SPA MSTR PLAN; STORMWATER MGMT PLAN; 2008-07-21STORMWATER MANAGEMENT PLAN (DATED 8/15/07) (REVISED 3/24/08, 7/21/08) FOR ARENAL ROAD CT 03-01 SWMP 08-10 OWNER: KSL LA COSTA RESORT CO., LLC 210 COSTA DE MAR ROAD CARLSBAD, CA 92009 (760) 929-6337 APNs: 216-592-02 & 216-590-07 ECEIVED AUG 0 1 2008 ENGINEERING DEPARTMENT LOCATION: Arenal Road in the City of Carlsbad, west of The La Costa Country Club, approx. 2400' northeast of Batiquitos Lagoon and 2.3 miles east of the Pacific Ocean PREPARED BY: SPEAR & ASSOCIATES, INC. CIVIL ENGINEERS AND LAND SURVEYORS 457 Production Street San Marcos, CA 92078 PHONE: (760) 736-2040 FAX: (760) 736-4866 Date: 7/21/08 S&A, INC J.N. 05-140 Q o UJ X o z cs Do TABLE OF CONTENTS 1.0 INTRODUCTION 1 2.0 PROJECT DESCRIPTION 1 3.0 TOPOGRAPHY 1 4.0 IDENTIFICATION OF POLLUTANTS OF CONCERN 1 5.0 IDENTIFICATION OF CONDITIONS OF CONCERN 2 6.0 STORMWATER MITIGATION MEASURES 3 7.0 IMPLEMENTATION & MAINTENANCE REQUIREMENTS 4 8.0 FISCAL RESOURCES 7 9.0 SUMMARY/CONCLUSIONS 7 ATTACHMENTS A. LOCATIONMAP 8 B. STORMWATER REQUIREMENTS APPLICABILITY CHECKLIST 10 C. APPLICAN'TS CERTIFICATION 14 D. SDRWQCB 303(D) LIST 16 E. BMP SIZING CALCULATION & DATA SHEETS 20 F. OPERATION AND MAINTENANCE PLAN 29 G. SCHEDULE OF BMP MAINTENANCE 32 H. ESTIMATED ANNUAL MAINTENANCE COST 33 I. SITE PLAN/BMP MAP 34 LO INTRODUCTION The City of Carlsbad has adopted a Standard Urban Storm Water Mitigation Plan (SUSMP), which was approved by the San Diego Regional Water Quality Control Board (SDRWQCB) on June 12, 2002. It was estabhshed with comphance to the SDRWQCB Permit Order 2001-01. The purpose ofthis program is to minimize or eliminate the impact of human activities on receiving water bodies, which will be accomplished through reducing pollutants in the urban runoff to the maximum extent practical (MEP). 2.0 PROJECT DESCRIPTION This hydrology report is prepared for improvement plans for Arenal Road, prepared by Spear & Associates, Inc. The project consists of improvements to a portion of Arenal Road, in the city of Carlsbad, located approximately 800 feet east of El Camino Real. The plans involve relocating and paving a portion of Arenal Road and removing pavement from the old alignment. There will be no significant change in grades or imperviousness. The existing impervious paved portion to be removed and relocated is approximately 0.088 acres and the new impervious paved area is approximately 0.13. The total net gain in imperviousness is 0.046 acres. A new storm drain system will collect runoff at stations 2+98 and 3+80, direct the flow through an 18" HDPE pipe, and discharge through a headwall into the existing swale adjacent to Arenal Road. 3.0 TOPOGRAPHY The proposed project area is characterized as sloping between 1 to 7%. The area is surrounded by residential developments, open space and the La Costa Country Club to the east. 4.0 IDENTIFICATION OF POLUTANTS OF CONCERN 4.1 Hydrologic Unit Contribution The project site is located in the Carlsbad hydrologic unit (904), sub-area (904.51) ofthe Batiquitos hydrologic unit, as listed in the Water Quality Control Plan of the San Diego Regional Water Quality Control Board. 4.2 Receiving Waters Receiving water are the San Marcos Creek, Batiquitos Lagoon and the Pacific Ocean. 4.3 Identification of Primary and Secondary Pollutants of concern 4.3.1 Primary Pollutants of Concern Clean Water Act Section 303(d) Impaired Water Bodies Status According to the 2003 Clean Water Act 303(d) lists published by the Califomia State Water Resources Control Board, within the project location: the Pacific Ocean, shoreline San Marcos is impaired with "Bacteria Indicators" with low TMDL priority. Since "Bacteria Indicators" is not expected in the runoff from the street, there is no anticipated primary pollutant of concem. 4.3.2 Secondary Pollutants of Concern Table 1 Anticipated and Potential Pollutants Generated from Project Project Categories Sediments Nutrie nts Heavy Metals Organic Gompounds Trash & Debris Oxygen Demandin g Substances Oil& Grease Bacteria & Viruses Pesticides Streets X X X X P X P = Potential pollutant X = Anticipated pollutant This table was compiled from the SUSMP manual. The anticipated secondary pollutants of concem include Sediments, Heavy Metals, Organic Compounds, Trash & Debris and Oil & Grease. Potential secondary pollutants include Oxygen Demanding Substances. 5.0 IDENTIFICATION OF CONDITIONS OF CONCERN 5.1 Existing and Post-Construction Drainage Since there will be no significant change in grades or imperviousness, there are no anticipated conditions of concem. The existing impervious paved portion to be removed and relocated is approximately 0.088 acres and the new impervious paved area is approximately 0.13. The total net gain in imperviousness is 0.046 acres. Table 2 below shows a Summary of existing and post-constmction peak flow rates for the 2-year, 10-year and 1 OO-year rainfall events and water quality volume flow (WQV). These flows were developed using the most recent edition of the San Diego County Hydrology Manual. The WQV was determined using the rainfall intensity of 0.2 in/hr, for flow-based BMPs. Refer to the Hydrology Report, for more detailed information on the drainage pattems and discharge flows. Table 2. Summary of pre and post construction flow rates Storm Event 2-year 10-year lOO-year WQV Pre-Development A.22, cfs 6.34 cfs 12.44 cfs Post-Development 4.25 cfs 6.38 cfs 12.52 cfs 0.31 cfs 6.0 STORMWATER MITIGATION MEASURES This project will not alter existing drainage pattems along the site and will not divert mnoff from existing conditions. In addition, it will not significantly increase the total mnoff discharging from the site. The onsite BMPs will reduce the targeted pollutants of concem to the maximum extent practical prior to discharging the mnoff into the street gutters and ultimately the Pacific Ocean. 6.1 Post-construction BMPs Pollutants of concem described above will be addressed through Site Design, Source Control and Treatment Control BMPs. 6.2 Site Design BMPs The project was designed to reduce pollutants through effective site planning and conservation of existing natural topography. • Post-development peak storm water mnoff discharge rates did not significantly exceed pre-development rates. • Impervious surfaces were minimized to the maximum extent practicable by minimizing paved width and total developed impervious areas did not significantly increase. Existing pervious areas will be removed and replaced in the new road alignment. 6.3 Source Control BMPs Source control BMPs consist of measures to prevent polluted runoff They include: Preventive stormdrain system stenciling at the catch basin and grated inlet with the words: "NO DUMPING -1 LIVE DOWNSTREAM" 6.4 Treatment Control BMPs This project will use FloGard Plus catch basin filter insert by Kristar Inc. model FGP-24F (treatment flow capacity =1.5 cfs), or approved equal, for treatment control BMP. The total treatment flow rate was calculated at 0.31 cfs or 139 Gal/min. (See hydrology report for detailed calcs.) This BMP is the most effective for addressing the pollutants of concem and will better remove Pollutants of Concem for this Type of Development to the maximum extent practical. (See Attachment E for media filter performance information). Other treatment BMPs, as recommended by the City of Carlsbad SUSMP manual, were also considered such as vegetated swales and sand filters. However, due to site constraints including a flat topography they proved to be unfeasible. According to Krystar inc., based on independent studies by UCLA, pollutant removal effectiveness is as follows: Sediment H (85%) Nutrients L Heavy Metals L Organic Compounds L Trash & Debris H (85%) Oxygen Demanding Substances L Bacteria L Oil & Grease H (85%) Pesticides L 7.0 IMPLEMENTATION & MAINTENANCE OF REQUIREMENTS After all project BMPs have been approved by the City Engineer, the owner/ applicant must ensure implementation and maintenance of the BMPs according to the processes outlined in the applicable sections for the project's discretionary actions and/or constmction permits. In addition, the owner /applicant shall comply with all pertinent items described in the City of Carlsbad's SUSMP. It shall be the responsibility of the owner to maintain all BMPs in order to achieve the maximum pollutant reduction. The owner shall devise a schedule of maintenance and submit to the City of Carlsbad's Engineering Department for approval. This schedule shall include periodic inspections of all Source Control BMPs. (See maintenance schedule on Attachment G). All BMPs shall be inspected and repaired 30 days prior to October 15* each year and certified to the City Engineering Department for their readiness to receive mnoff from the annual rainfall season. An Operation and Maintenance Plan was prepared for this project (see Attachment F). It shall be incorporated and attached to the city's approved maintenance agreement. The owner will also, provide to the City of Carlsbad as part ofthe maintenance agreement an executed access easement that shall be binding on the land throughout the life of the project, until such time that the storm water BMPs requiring access are replaced satisfactory to the City Engineer. 7.1 Operation & Maintenance Plan For FloGard Plus Catch Basin Filter Insert Filters shall be maintained in accordance manufacturer's recommendations and shall be tested 30 days prior to October 1st of each year during the first rainfall of each rain season to check for clogging and effectiveness of removal of targeted pollutants. If clogging occurs the filter inserts shall be removed and replaced immediately and prior to the next storm event. Manufacturer's Maintenance Recommendations: Recommended Frequency Of Service: Drainage Protection Systems (DPS) recommends that installed Flo-Gard+Plus® Insert Filters be serviced on a recurring basis. Ultimately, the frequency depends on the amount of mnoff, pollutant loading and interference from debris (leaves, vegetation, cans, paper, etc.); however, it is recommended that each installation be serviced a minimum of three times per year, with a change of filter medium once per year. DPS technicians are available to do an on-site evaluation, upon request. Recommended Timing Of Service: DPS guidelines for the timing of service are as follows: 1. For areas with a definite rainy season: Prior to, during and following the rainy season. 2. For areas subject to year-round rainfall: On a recurring basis (at least three times per year). 3. For areas with winter snow and summer rain: Prior to and just after the snow season and during the summer rain season. 4. For installed devices not subject to the elements (washracks, parking garages, etc.): On a recurring basis (no less than three times per years). Service Procedures: 1. The grate shall be removed and set to one side. The filter shall be visually inspected for defects and possible illegal dumping. If illegal dumping has occurred, the proper authorities and property owner representative shall be notified as soon as practicable. 2. Using an industrial vacuum, the collected materials shall be removed from the liner. (Note: DPS uses a tmck-mounted vacuum for servicing Flo-Gard+Plus®.) 3. When all of the collected materials have been removed, the filter medium pouches shall be removed by unsnapping the tether from the D-ring and set to one side. The filter liner, gaskets, stainless steel frame and mounting brackets, etc. shall be inspected for continued serviceability. Minor damage or defects found shall be corrected on-the-spot and a notation made on the Maintenance Record. More extensive deficiencies that affect the efficiency of the filter (tom liner, etc.), if approved by the customer representative, will be corrected and an invoice submitted to the representative along with the Maintenance Record. 4. The filter medium pouches shall be inspected for defects and continued serviceability and replaced as necessary and the pouch tethers re-attached to the liner's D-ring. 5. The grate shall be replaced. Replacement And Disposal Of Exposed Filter Medium And Collected Debris The frequency of filter medium pouch exchange will be in accordance with the existing DPS-Customer Maintenance Contract. DPS recommends that the medium be changed at least once per year. During the appropriate service, or if so detennined by the service technician during a non-scheduled service, the filter medium pouches will be replaced with new pouches. Once the exposed pouches and debris have been removed, DPS has possession and must dispose of it in accordance with local, state and federal agency requirements. Note: As the generator, the landowner is ultimately responsible for the proper disposal of the exposed filter medium and debris. Because the filter media likely contain petroleum hydrocarbons, heavy metals and other harmful pollutants, the materials must be treated as an EPA Class 2 Hazardous Waste and properly disposed of. DPS relieves the landowner of the actual disposal task, and provides certification of its completion in accordance with appropriate regulations. DPS also has the capability of servicing all manner of catch basin inserts and catch basins without inserts, underground oil/water separators, stormwater interceptors and other such devices. All DPS personnel are highly qualified technicians and are confined space trained and certified. Call us at (888) 950-8826 for further information and assistance. Maintenance Frequency The owner/applicant shall prepare and submit to the City of San Diego's Engineering Department for approval a maintenance indicator document. This document shall list the schedule of maintenance activities to be implemented for the project. Debris and Sediment Disposal Waste generated from the project is ultimately the responsibility of owner/applicant. Disposal of sediments, debris, and trash will comply with applicable local, county, state, and federal waste control programs. Hazardous Waste Suspected hazardous wastes will be analyzed to determine disposal options. Hazardous wastes generated onsite will be handled and disposed of according to applicable local, state, and federal regulations. A solid or liquid waste is considered a hazardous waste if it exceeds the criteria listed in the CCR, Title 22, and Article 11. 8.0 FISCAL RESOURCES The owner is responsible for maintaining all BMPs. (See estimated annual maintenance cost on Attachment H) 9.0 SUMMARY/CONCLUSUIONS This SWMP has been prepared in accordance with the City of Carlsbad's SUSMP guidelines. It has evaluated and addressed the potential pollutants associated with this project and their effects on water quality. A summary of the facts and findings associated with this project and the measures addressed by this SUSMP is as follows: • Post development flow and pollutants of concem will be addressed and controlled onsite by the development with Site Design BMPs; Source Control BMPs; and Treatment Control BMPs. These BMPs will remove the Pollutants of Concem, as listed in Section 4.3 of this SWMP, to the maximum extent practical. • The development will not significantly alter or increase drainage pattems on the site. This report was prepared by: Danny Abada, P.E. Date: 3/24/2008 ATTACHMENT A -Jr 2099 Arena! Rd: 1127 F7 ATTACHMENT B 10 STORMWATER REQUIREMENTS APPUCAplLITY CHECKLIST Project Address Arenal Road, Cartsbad, CA Assessors Parcel Number(s): 216-S92-02 &216-590-07 Project # (cHy use onty): Complete Sections 1 and 2 of the following checklist to determine your project's permanent and construction storm water best management practices requirements. This form must ise 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 Pennanent Stonn Water BMP Requirements," aod "Standard Pennanent Stomn Water BMP Requirements" in Section III, "Permanent Storm Water BMP Selection Procedure' in the Storm Water Standards manual. If all answers to Part A are "No," and aoy answers to Part B are "Yes," your project is only subject to the "Standard Pennanent Stonn Water BMP Requirements". If every question in Part A and B is answered "No," your project is exempt from permanent stonn water requirements. Does the project meet the definition of one or more of the priority project categories?* Yes No 1. Detached residential development of 10 or more units. 1 1 k 2. Attached residential development of 10 or more units. u kl 3. Commercial development greaterthan 100,000 square feet. • 4. Automotive repair shop. n 0 5. Restaurant. 11 kl 6. Steep hillside development greater than 5,000 square feet. 11 kl 7. Project discharging to receiving waters within Environmentally Sensitive Areas. u kl 2 8. Parking lots greater than or equal to 5,000 ft or with at least 15 parking spaces, and potentially exposed to urban mnoff. • 9. Streets, roads, highways, and freeways which would create a new paved surface that is 5,000 square feet or greater 0 • * Refer to the defmitions section in the Storm Water Standards for expanded definitions ofthe priority project categories. Limited Exclusion: Trenching and resurfadng woric associated with utility projects are not considered priority projects. Paricing lote, buildings and other sbuctures 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. 11 Does the project propose: Yes No 1. New impervious areas, such as rooftops, roads, parking lots, driveways, patiis and sidewalks? ki 1 1 2. New pervious landscape areas and irrigation systems? 1 1 kl 3. Permanent structures witiiin 100 feet of any natural water body? 1 1 k 4. Trash storage areas? 1 1 k 5. Liquid or solid material loading and unloading areas? 1 1 k 6. Vehicte or equipment fueling, washing, or maintenance areas? 1 1 k 7. Require a General NPDES Pennit for Stonn Water Discharges Associated with Industrial Activities (Except construction)?* 1 k 8. Commercial or industiial waste handling or storage, excluding typical office or household waste? • 9. Any grading or ground disturisance during construction? • 10. Any new storm drains, or alteration to existing storm drains? •1 1 1 *To find out if your project is required to obtain an Individual General NPDES Permit for Storm Water Discharges Associated witii Industrial Activities, visit the State Water Resources Control Board web site at, www.swrcb.ca.gov/stormwtr/industrial.html Section 2. Construction Storm Water BMP Requirements: Ifthe answer to question 1 of Part C is answered "Yes," your project is subject to Section IV, "Constaiction Storni Water BMP Perfonnance Standards," and must prepare a Storm Water Pollution Prevention Plan (SWPPP). If the answer to question 1 is "No," but the answer to any of tiie remaining questions is "Yes," your project is subject to Section IV, "Construction Stonn Wat^ BMP Perionnance Standards," and must prepare a Water Pollution Conti'ol Plan (WPCP). If every question in Part C is answered "No." your project is exempt from any constiuction stonn water BMP requirements. If any of the answers to tiie questions in Part C are "Yes," complete the constiuction site prioritization in Part D, below. Would the project meet any of these criteria during construction? Yes No 1. Is the project subject to California's statewkle General NPDES Permit for Storm V\^ter Discharges Associated Witii Constructton Activities? 1 1 kl 2. Does tiie project propose grading or soil disturbance? kl 3. WouM storm water or utban runoff have the potential to contact any portion of the construction areajncluding washing and staging areas? J 4. Would the prqject use any construction materials that couid negatively affect water quality if discharged from tiie site (such as, paints, solvents, concrete, and stucco)? • 0 12 Part D: Determine Construction Site Priority In accordance with tiie Municipal Permtt, each consbuction site with constiruction storni water BMP requirements must be designated with a priority: high, medium or low. This prioritization must be completed witii this fonn, noted on the plans, and inciuded in ttie SWPPP or WPCP. Indicate ttie projecfs priority in one of the check boxes using the criteria below, and existing and surrounding conditions of the project, tiie type of activities necessary to complete the consbuction and any other extenuating circumstances that may pose a threat to water quality. The City reserves the right to adjust the priority of the projects both before and during construction. {Note: The consbuction priority does NOT change consbuction BMP requirements that apply to projects; all consbuction BMP requirements must be identified on a case-by-case t>asis. The constiuction priority does affect ttie frequency of inspections fliat will be conducted by City staff. See Section IV.1 fbr more details on consbuctton BMP requirements.] \~~\A) High Prtority 1) Projects where tiie site is 50 acres or more and grading will occur during the rainy season 2) Projects 1 acre or more. 3) Projects 1 acre or more within or direcUy adjacent to or discharging directly to a coastai lagoon or other receiving water within an environmentally sensitive area 4) Projects, active or inactive, adjacent or tributary to sensitive water bodies • B) Medium Priority 5) 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 reptacement projects, intersection and street re-alignments, widening, comfort stations, etc.) 6) Permit projects in the pubiic right-of-way where grading occurs, such as instailation of sidewalk, substantial retaining walls, cutb and gutter for an entire street frontage, etc., however SWPPPs are not required. 7) Permit projects on private property where grading pennits are required, however, Notice Of Intents (NOIs) and SWPPPs are not required. I \C) Low Priority 8) Capital Projects where minimal to no grading occurs, such as signal light and loop installations, street light installations, etc. 9) Permit projects in the public right-of-way where minimal to no grading occurs, such as pedestrian ramps, driveway additions, small retaining walls, etc. 10) Permit projects on private property where grading pennits are not required, such as small retaining walls, single-family homes, small tenant improvements, etc. Owner/Agent/Engineer Name (Please Print): Danny Abada, P.E. Title: Agent 13 ATTACHMENT C 14 STORM WATER MANAGEMENT PLAN APPLICANT'S CERTIFICATION OF SWMP I certify under a penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the informadon submitted is to the best of my knowledge and belief, true, accurate and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. 3/24/08 Signature Date Spear & Associates, Inc. by: Danny Abada, Civil Engineer 760 736-2040 Name and Title Telephone Number 15 ATTACHMENT D 16 CRAPHIC SCALE 0 4 8 MILES LEGEND DRAINAGE PROVINCE BOUNDARY HYDROLOGIC UNIT BOUNDARY HYDROLOGIC AREA BOUNDARY HYDROLOGIC SUBAREA BOUNDARY FIGURE 1-2. SANDIEGO REGION HYDROLOGIC UNITS AREAS, AND SUBAREAS FIGURE 1-2 INTRODUCTION 1 - 7 Septenp^r 8, 1994 TABLE 1 - 2. HYDROLOGIC UNITS, AREAS (HA) AND SUBAREAS (HSA) OF THE SAN DIEGO REGION BASIN NUMBER HYDROLOGIC BASIN BASIN NUMBER HYDROLOGIC BASIN 1.00 SAN JUAN HYDROLOGIC UNIT 2.74 Burnt HSA 1.10 Laguna HA 2.80 Aguanga HA 1.11 San Joaquin Hills HSA 2.81 Vail HSA 1.12 Laguna Beach HSA 2.82 Devils Hole HSA 1.13 Aliso HSA 2.83 Redec HSA 1.14 Dana Point HSA 2.84 Tule Creek HSA 1.20 Mission Viejo HA 2.90 Oakgrove HA 1.21 Oso HSA 2.91 Lower Gulp HSA 1.22 Upper Trabuco HSA 2.92 Previtt Canyon HSA 1.23 Middle Trabuco HSA 2.93 Dodge HSA 1.24 Gobernadora HSA 2.94 Chihuahua HSA 1.25 Upper San Juan HSA 1.26 Middle San Juan HSA 3.00 SAN LUIS REY HYDROLOGIC UNIT 1.27 Lower San Juan HSA 3.10 Lower San Luis HA 1.28 Ortega HSA 3.11 Mission HSA 1.30 San Clemente HA 3.12 Bonsall HSA 1.31 Prima Deshecha HSA 3.13 Moosa HSA 1.32 Segunda Deshecha HSA 3.14 Valley Center HSA 1.40 San Mateo Canyon HA 3.15 Woods HSA 1.50 San Onofre HA 3.16 Rincon HSA 1.51 San Onofre Valley HSA 3.20 Monserate HA 1.52 Las Pulgas HSA 3.21 Pala HSA 1.53 Stuart HSA 3.22 Pauma HSA 3.23 La Jolla Amago HSA 2.00 SANTA MARGARITA HYDROLOGIC UNIT 3.30 Warner Valley HA 2.10 Ysidora HA 3.31 Warner HSA 2.11 Lower Ysidora HSA 3.32 Combs HSA 2.12 Chappo HSA 2.13 Upper Ysidora HSA 4.00 CARLSBAD HYDROLOGIC UNIT 2.20 DeLuz HA 4.10 Loma Aha HA 2.21 DeLuz Creeic HSA 4.20 Buena Vista Creek HA 2.22 Gavilan HSA 4.21 El Salto HSA 2.23 Vallecitos HSA 4.22 Vista HSA 2.30 Murrieta HA 4.30 Agua Hedionda HA 2.31 Wildomar HSA 4.31 Los Monos HSA 2.32 Murrieta HSA 4.32 Buena HSA 2.33 French HSA 4.40 Encinas HA 2.34 Lower Domenigoni HSA 4.50 San Marcos HA 2.35 Domenlgoni HSA 4.51 Batiquitos HSA 2.36 Diamond HSA 4.52 Richland HSA 2.40 Auld HA 4.53 Twin Oaks HSA 2.41 Bachelor Mountain HSA 4.60 Escondido Creek HA 2.42 Gertrudis HSA 4.61 San Elijo HSA 2.43 Lower Tucalota HSA 4.62 Escondido HSA 2.44 Tucalota HSA 4.63 Lake Wohlford HSA 2.50 Pechanga HA 2.51 Pauba HSA 5.00 SAN DIEGUITO HYDROLOGIC UNIT 2.52 Wolf HSA 5.10 Solana Beach HA 2.60 Wilson HA 5.11 Rancho Santa Fe HSA 2.61 Lancaster Valley HSA 5.12 La Jolla HSA 2.62 Lewis HSA 5.20 Hodges HA 2.63 Reed Valley HSA 5.21 Del Dios HSA 2.70 Cave Rocks HA 5.22 Green HSA 2.71 Lower Coahuila HSA 5.23 Felicita HSA 2.72 Upper Coahuila HSA 5.24 Bear HSA 2.73 Anza HSA INTRODUCTION 1-B Ssptemtw^^, 1994 2002 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENT ^""^"^'^""y ^^^^^ SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD July 2003 C Pacific Ocean Shoreline, San Diequito HU 90511000 Bacteria Indicators Impairment located at San Dieguito Lagoon Mouth, Solana Beach. Nonpoint/Point Source Low 0.86 Miles C Pacific Ocean Shoreline, San Joaquin Hills HSA 90111000 Bacteria Indicators Low Impairment located at Cameo Cove at Irvine Cove Dr./Riviera Way, Heisier Park-North Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source 0.63 Miles 9 C Pacific Ocean Shoreline, San Luis Rey HU 90311000 Bacteria Indicators Impairment located at San Luis Rey River Mouth. Nonpoint/Point Source Low 0.49 Miles 9 C Pacific Ocean Shoreline, San Marcos HA 904S1000 Bacteria Indicators Impairment located at Moonlight State Beach. Nonpoint/Point Source Low 0.5 Miles 9 C Pacific Ocean ShoreUne, Scripps HA 90630000 Bacteria Indicators Medium 3.9 Miles Impairment located at La Jolla Shores Beach at El Paseo Grande, La Jolla Shores Beach at Caminito Del Oro, La Jolla Shores Beach at Vallecitos, La Jolla Shores Beach at Ave de la Playa, Casa Beach (Childrens Pool). South Casa Beach at Coast Blvd., Whispering Sands Beach at Ravina St., Windansea Beach at Vista de la Playa, Windansea Beach at Bonair St., Windansea Beach at Playa del Norte, Windansea Beach at Palomar Ave., Tourmaline Surf Park, Pacific Beach at Grand Ave. Nonpoint/Point Source 9 C Paciflc Ocean Shoreline, Tijuana HU 91111000 Bacteria Indicators Impairment locatedfi-om the border, extending north along the shore. Nonpoint/Point Source Low 3 Miles 9 R Pine Valley Creek (Upper) 91141000 Enterococci Medium Grazing-Related Sources Concentrated Animal Feeding Operations (permitted, point source) Transient encampments 2.9 Miles Page 7 of 16 19 ATTACHMENT E 20 SUSMP Flow Calculation REACH UPPER LOWER TC C A CA Sum CA Precipitation 1 Q Cfs 1 New Impervious Area @ Arenal Rd. 0.9 0.046 0.04 02 0.41 3.67 1.50 Filter unit 1.55 0.20 0.31 Flow Through Devices Intensity I = 0.2 in/hr Reference: California Regional Water Quality Control Board Order NO. 2001-01 Note: See Hydrology report for drainage area map 21 FOR TYPE F INLET (PAGE 1 SPECIFIER CHART MODEL NO. Curb Opening Width - W- Storage Capacity - Cu Ft. - Filtered Flow Rate - GPM/CFS - Bypass Flow Rate - GPM/CFS - FGP-24CI 2.0' (24") .95 338 / .75 2,513/5.6 FGP-30CI 2.5' (30") 1.20 450/1.00 3,008 / 6.7 FGP-36CI 3.0' (36") 1.50 563/1.25 3,547 / 7.9 FGP-42CI 3.5' (42") 1.80 675/1.50 3,951 / 8.8 • FGP^aCI 4.0' (48") 2.10 768/1.76 4,445 / 9.9 FGP-5.0CI 5.0' (60") 2.40 900 / 2.00 5,208/11.6 FGP-6.0CI 6.0' (72") 3.05 1,126/2.51 6,196/13.8 FGP-7.0CI 7.0' (84") 3.65 1,350/3.01 7,139/15.9 FGP-8.0CI 8.0' (96") 4.25 1,576/3.51 8,082 /18.0 FGP-10.0CI 10.0' (120") 4.85 1,800/4.01 9,833/21.9 FGP-12.0CI 12.0' (144") 6.10 2,252 / 5.02 11,764 / 26.2 FGP-14.0CI 14.0' (168") 7.30 2,700/6.02 13,515/30.1 FGP-16.0CI 16.0' (192") 8.55 3.152/7.02 15,446 / 34.4 FGP-18.0CI 18.0' (216") 9.45 3,490 / 7.78 17,152/38.2 FGP-21.0CI 21.0' (252") 10.95 4,050 / 9.02 19,891 /44.3 FGP-28.0CI 28.0 (336") 14.60 5,400 / 12.03 26,311 /58.6 OF 2) FloGard®+Plus FILTER FRAME MOUNTING BRACKET FILTER LINER & SUPPORT BASKET. EXPANSION BOLT DETAIL A MOUNTING BRACKET lc EXPANSION BOLTS SEE NOTE 2 SCALE 6/1 RUBBER GASKETS FloGard®+Plus CURB INLET FILTER ASSEMBLY. A I CATCH BASIN. NOTES: 1. FloGard®+PLUS filter Inserts shall be installed across the entire width of curb opening. Storage capadty and clean flow rates are based on full width installation. 2. Filter insert shall be attached to the catch basin with stainless steel expansion anchor bolts & washers (3/8" x 2-1/2" minimum length.) See detail A. 3. FloGard®+PLUS filter Inserts are designed with a debris trap/energy dissipator for the retention of floatables and collected sediments . 4. Filter support frame shall be constmcted from stainless steel Type 304. 5. Filter liner shall be constructed from durable polypropylene, woven, monofilament, geotextile. Filter liner shall not allow the retention of water between storm events. 6. Filter inserts are supplied with "clip-In" filter pouches utilizing FOSSIL ROCK™ filter medium for the collection and retention of petroleum hydrocarbons (oils & greases). 7. FloGard®+PLUS filter inserts and FOSSIL ROCK ™ filter medium pouches must be maintained in accordance with manufacturer recommendations. 8. FloGard +PLUS filter inserts are available in standard lengths of 24", 30",35", 42" & 48" and may be installed In various length combinations (end to end) to fit length of noted catch basin. 9. Clean flow rates are "calculated" based on liner flow rate of 140 gallons per minute per square foot of material, a factor of .50 has been applied to allow for anticipated sediment & debris loading. An additional safety CATCH factor of between .25 & .50 may be applied to allow for site specific BASIN sediment loading. 10. Storage capacity reflects maximum solids collection prior to Impending "initial" filtering bypass. The "ultimate" high-flow bypass will not become Impeded due to maximum solids loading. CURB OPENING SECTION B-B TOP VIEW SCALE 1/1 FLO-GARD® CURB INLET FILTER ASSEMBLY. FOSSIL ROCK' ABSORBENT POUCH. SEE DETAIL A CURB OPENING FILTER LINER ic SUPPORT BASKET. OUTLET SECTION A-A SiDE VIEW SCALE 1/1 •tTLE CATCH BASIN FILTER INSERT (Curb Inlet Style) 1 KRISTAR 1 •tTLE CATCH BASIN FILTER INSERT (Curb Inlet Style) DRAWING NO. FGP-0002 REV c ECO 0041 7/20/07 JPR 11/3/06 SHEET 1 OF 1 FOR TYPE F INLET (PAGE 2 OF 2; Plpebilel ±1 \2 Grata FtoGard tPlus* Fate- Pipe Gullet NOTB: 1 ngQM«ftU8»(MinHiiiQNglicipiel»alchliMln IMm at WMHN n IBM B K MniMHn n|(M M i>onilwilinimtlitiilM(M>iptcllirdwrt). (Mrto iMflaGMd'tnuSiflNminxHOkNMfordniewtom nvNi Mw^HN innpira iifii ctnn 2. Rtar hMrt Aril hwi botfi in InKir flMnp bypiN md 3, nirr aMMtnrty ihiM bii foiwtniftiwl fttm Btrinin i ghwi nyi»3o^ oflnli(p^indtQpo(oulMpipt(4> MUrtotfw l%lltelfffekMHf Atf'WHlbM^ fatfdteimK 5. fItoiMdkiniMlMftalRDekMriMaidininlikiid in McoidBKi vMt nNnuhctunr ncoRmniMioML us MTENT FLOGARD+PLUS® CATCH BASIN FILTER INSERT (VVyi Mount) FLAT GRATED IMJET AMyORPIPEIMJEr KriStar Enterprises. Inc.. Santa Rosa, CA (800) 57&^19 00041 23 FOR GRATE INLET (PAGE 1 OF 2) FLOGARD+PLUS® FILTER -INSTALLED INTO CATCH BASIN- GRATE ULTIMATE BYPASS FEATURES GASKET STAINLESS STEEL SUPPORT BASKET Fossil Rock ™ ABSORBENT POUCHES LINER SUPPORT BASKET CATCH BASIN (FLAT GRATE STYLE) NOTES 1. EXPLODED VIEW U.S. PATENT # 6,00,023 & 6,877,029 FloGard®+Plus (frame mount) high capacity catch basin Inserts are available In most sizes and styles (see specifier chart, sheet 2 of 2). Refer to the FloGard ®+Plus (wall mount) Insert for devices to fit non-standard, or combination style catch basins. 2. Filter insert shall have both an "initial" filtering bypass and "ultimate" high flow bypass feature. 3. Filter support frame shall be constructed from stainless steel Type 304. 4. Allow a minimum of 2.0 feet, of clearance between the bottom of the grate and top of outlet plpe(s), or refer to the FloGard® insert for "shallow" Installations. 5. Filter medium shall be Fossil Rock ™, Installed and maintained In accordance with manufacturer specifications. 6. Storage capacity reflects 80% of maximum soilds collection prior to impeding filtering bypass. 7. Filtered flow rtrate includes a safety factor of two. CATCH BASIN FILTER INSERT (Frame Mount) FLAT GRATED INLET KnStar Enterpnse ^^^T^ P.O. Box 6419, Santa Rosa, CA 95406 Ph: 800.579.8819, Fax: 707.524.8186, v 3S, Inc. ^^(w.kristar.com CATCH BASIN FILTER INSERT (Frame Mount) FLAT GRATED INLET DRAWING NO. FGP-0001 REV A ECO OATE 0001 09/01/06 SHEET 1 OF 2 "ULTIMATE" BYPASS FEATURE (LOUVERS (Sc OPENINGS) SEE DETAiL C FOR GRATE INLET (PAGE 2 OF 2) U.S.PATENT#6,00,023&6,877,029 "ULTIMATE" BYPASS FEATURE (LOUVERS & OPENiNGS) DEPTH STANDARD = 20 INCHES SHALLOW = 12 INCHES •CUSTOM DETAIL B SECTION VIEW FLO-GARD® +FILTER -INSTALLED- ' MANY OTHER STANDARD & CUSTOM SIZES & DEPTHS AVAILABLE UPON REQUEST. DETAIL C "ULTIMATE" BYPASS FEATURES SPECIFIER CHART MODEL NO. STANDARD & SHALLOW DEPTH (Data in these cx)lumes is the same for both STANDARD & SHALLOW versions) STANDARD DEPTH -20 Inches-MODEL NO. SHALLOW DEPTH -12 Inches- STANDARD DEPTH INLET ID Inside Dimension (incli X inch) GRATE OD Outside Dimension (inch X inch) TOTAL BYPASS CAPACITY (cu. ft.) SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft./sec.) SHALLOW DEPTH SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft./sec.) FGP-12F 12X12 12X14 2.8 0.3 0.4 FGP-12F8 .15 .25 FGP-1530F 15X30 15X35 6.9 2.3 1.6 FGP-1530F8 1.3 .9 FGP-16F 16X16 16X19 4.7 0.8 0.7 FGP-16F8 .45 .4 FGP-1624F 16X24 16X26 5.0 1.5 1.2 FGP-1624F8 .85 .7 FGP-18F 18X18 18X20 4.7 0.8 0.7 FGP-18F8 .45 .4 FGP-1820F 16X19 18X21 5.9 2.1 1.4 FGP-1820F8 1.2 .8 FGP-1824F 16X22 18X24 5.0 1.5 1.2 FGP-1824F8 .85 .7 FGP-1836F 18X36 18X40 6.9 2.3 1.6 FGP-1836F8 1.3 .9 FGP-2024F 18X22 20X24 5.9 1.2 1.0 FGP-2024F8 .7 .55 FGP-21F 22X22 22X24 6.1 2.2 1.5 FGP-21F8 1.25 .85 FGP-2142F 21 X40 24X40 9.1 4.3 2.4 FGP-2142F8 2.45 1.35 FGP-2148F 19X46 22X48 9.8 4.7 2.6 FGP-2148F8 2.7 1.5 FGP-24F 24X24 24X27 6.1 2.2 1.5 FGP-24F8 1.25 .85 FGP-2430F 24X30 26X30 7.0 2.8 1.8 FGP-2430F8 1.6 1.05 FGP-2436F 24X36 24X40 8.0 3.4 2.0 FGP-2436F8 1.95 1.15 FGP-2448F 24X48 26X48 9.3 4.4 2.4 FGP-2448F8 2.5 1.35 FGP-28F 28X28 32X32 6.3 2.2 1.5 FGP-28F8 1.25 .85 FGP-2440F 24X36 28X40 8.3 4.2 2.3 FGP-2440F8 2.4 1.3 FGP-30F 30X30 30X34 8.1 3.6 2.0 FGP-30F8 2.05 1.15 FGP-36F 36X36 36X40 9.1 4.6 2.4 FGP-36F8 2.65 1.35 FGP-3648F 36X48 40X48 11.5 6.8 3.2 FGP-3648F8 3.9 1.85 FGP-48F 48X48 48X54 13.2 9.5 3.9 FGP-48F8 5.45 2.25 FGP-SD24F 24X24 28X28 6.1 2.2 1.5 FGP-SD24F8 1.25 .85 FGP-1836FGO 18X36 20X40 6.9 2.3 1.6 FGP-1836F8GO 1.3 .9 FGP-2436FGO 20X36 24X40 8.0 3.4 2.0 FGP-2436F8GO 1.95 1.15 FGP-48FGO 18X48 20X54 6.3 2.2 1.5 FGP-48F8GO 1.25 .85 r ^^Sa«l*+PLUS CATCH BASIN FILTER INSERT (Frame Mount) FLAT GRATED INLET rgji^ KriStar Enterpris* ^^^^ P.O. Box 6419, Santa Rosa, CA 95406 Ph: 800.579.8819, Fax: 707.524.8186, v 3S, Inc. ^•(w.kristar.com r ^^Sa«l*+PLUS CATCH BASIN FILTER INSERT (Frame Mount) FLAT GRATED INLET DRAWING NO, FGP-0001 REV A ECO 0001 DATE JPR 09/01/06 SHEET 2 OF 2 KRISTAR ENTERPRISES, INC. Performance Summary Tech Bulletin KS-FGPWWC-08220S-C '* Independent field tests conducted in Hav^aii and New Zealand on FloGard +PLUS® Catch Basin Insert Filters to determine TSS removal efficiency. Results were extrapolated to a typical street deposited sediment particle size. Removal efficiencies were plotted and reflect effective TSS removal over the typical range of operating flow rates. Results are shown below as a function of unit internal surface area. o _ E 100 80 60 40 20 0 FloGard -t-Plus® TSS Removal Typical Urban Runoff Distribution* 'extrapolated from available fleld test data 20 40 60 80 100 Flux (gpm/sq ft) 120 140 FloGard +Pius - Linear (FioGard +Pius) KKISIAK Street Deposited Sediment Typical Particle Size Distribution from urban runoff TSS survey data 100 1000 Particle Size (micron) -Woodward-Clyde (1997) • - Honolulu Street Sediment (2004) Units are sized to fit most common styles of drainage Inlet grate frames or Inlet widths. Rated filtered flow capacities for each model typically exceed the required "first flush" treatment flow rate, and account for reduction In capacity as the unit accumulates suspended pollutants. Rated bypass capacity for each model also typically exceeds the inlet capacity of the catch basin. KriStar's FloGard +PLUS® Catch Basin Insert Filter is an efficient inlet prefilter designed to remove suspended sediment and floatable trash and hydrocarbons from stormwater runoff in new or retrofit applications. It is ideally suited for removal of primary pollutants from paved surfaces in commercial and residential areas, or may form part of a treatment train. The device features a unique dual-bypass design, durable components, flexible installation options and easy maintenance access. FloGard +PLUS* Test Results Summary Testing Agency % TSS Removal % Oil & Grease Removal UCLA 80* 70-80 U of Auckland Tonkin & Taylor Ltd (for City of Auck- land) 95" 78-86*" U of Hawaii (for City of Honolulu) 80*** "Sand larger than -575 nm "Sand distribution -100-1000 nm '"Local street sweep material (distribution consistent with NURP) 26 KKISIAK GENERAL SPECinCATIONS FOR MAINTENANCE OF FLO-GARD+PLUS® CATCH BASIN INSERT FILTERS SCOPE: Federal, State and Local Clean Water Act regulations and those of insurance carriers require that stormwater filtration systems be maintained and serviced on a recurring basis. The intent of the regulations is to ensure that the systems, on a continuing basis, efficiently remove pollutants from stormwater runoff thereby preventing pollution of the nation's water resources. These specifications apply to the FloGard+Plus® Catch Basin Insert Filter. RECOMMENDED FREQUENCY OF SERVICE: Drainage Protection Systems (DPS) recommends that installed Flo-Gard-l-Plus® Catch Basin Insert Filters be serviced on a recurring basis. Ultimately, the frequency depends on the amount of runoff, pollutant loading and interference from debris (leaves, vegetation, cans, paper, etc.); however, it is recommended that each installation be serviced a minimum of three times per year, with a change of filter medium once per year. DPS technicians are available to do an on-site evaluation, upon request. RECOMMENDED TIMING OF SERVICE: DPS guidelines for the timing of service are as follows: 1. For areas with a definite rainy season: Prior to, during and following the rainy season. 2. For areas subject to year-round rainfall: On a recurring basis (at least three times per year). 3. For areas with winter snow and summer rain: Prior to and just after the snow season and during the summer rain season. 4. For installed devices not subject to the elements (washracks, parking garages, etc.): On a recurring basis (no less than three times per years). SERVICE PROCEDURES: 1. The catch basin grate shall be removed and set to one side. The catch basin shall be visually inspected for defects and possible illegal dumping. If illegal dumping has occurred, the proper authorities and property owner representative shall be notified as soon as practicable. 2. Using an industrial vacuum, the collected materials shall be removed from the liner. (Note: DPS uses a truck-mounted vacuum for servicing Flo-Gard-i-Plus® catch basin inserts.) 3. When all of the collected materials have been removed, the filter medium pouches shall be removed by unsnapping the tether from the D-ring and set to one side. The filter liner, gaskets, stainless steel frame and mounting brackets, etc. shall be inspected for continued serviceability. Minor damage or defects found shall be corrected on-the-spot and a notation made on the Maintenance Record. More extensive deficiencies that affect the efficiency of the filter (tom liner, etc.), if approved by the customer representative, will be corrected and an invoice submitted to the representative along with the Maintenance Record. 4. The filter medium pouches shall be inspected for defects and continued serviceability and replaced as necessary and the pouch tethers re-attached to the liner's D-ring. See below. 5. The grate shall be replaced. 27 REPLACEMENT AND DISPOSAL OF EXPOSED FILTER MEDIUM AND COLLECTED DEBRIS The frequency of filter medium pouch exchange will be in accordance with the existing DPS-Customer Maintenance Contract. DPS recommends that the medium be changed at least once per year. During the appropriate service, or if so determined by the service technician during a non-scheduled service, the filter medium pouches will be replaced with new pouches. Once the exposed pouches and debris have been removed, DPS has possession and must dispose of it in accordance with local, state and federal agency requirements. Note: As the generator, the landowner is ultimately responsible for the proper disposal of the exposed filter medium and debris. Because the filter media likely contain petroleum hydrocarbons, heavy metals and other harmfiil pollutants, the materials must be treated as an EPA Class 2 Hazardous Waste and properly disposed cf. DPS relieves the landowner of the actual disposal task, andprovides certification of its completion in accordance with appropriate regulations. DPS also has the capability of servicing all manner of catch basin inserts and catch basins without inserts, underground oil/water separators, stormwater interceptors and other such devices. All DPS personnel are highly qualified technicians and are confined space trained and certified. Call us at (888) 950-8826 for further information and assistance. 28 ATTACHMENT F 29 Operation & Maintenance Plan Filters shall be maintained in accordance manufacturer's recommendations and shall be tested 30 days prior to October 1st of each year during the first rainfall of each rain season to check for clogging and effectiveness of removal of targeted pollutants. If clogging occurs the filter inserts shall be removed and replaced immediately and prior to the next storm event. Manufacturer's Maintenance Recommendations: Recommended Frequency Of Service: Drainage Protection Systems (DPS) recommends that installed Flo-Gard+Plus® Insert Filters be serviced on a recurring basis. Ultimately, the frequency depends on the amount of runoff, pollutant loading and interference from debris (leaves, vegetation, cans, paper, etc.); however, it is recommended that each installation be serviced a minimum of three times per year, with a change of filter medium once per year. DPS technicians are available to do an on-site evaluation, upon request. Recommended Timing Of Service: DPS guidelines for the timing of service are as follows: 1. For areas with a definite rainy season: Prior to, during and following the rainy season. 2. For areas subject to year-round rainfall: On a recurring basis (at least three times per year). 3. For areas with winter snow and summer rain: Prior to and just after the snow season and during the summer rain season. 4. For installed devices not subject to the elements (washracks, parking garages, etc.): On a recurring basis (no less than three times per years). Service Procedures: 1. The grate shall be removed and set to one side. The filter shall be visually inspected for defects and possible illegal dumping. If illegal dumping has occurred, the proper authorities and property owner representative shall be notified as soon as practicable. 2. Using an industrial vacuum, the collected materials shall be removed from the liner. (Note: DPS uses a truck-mounted vacuum for servicing Flo-Gard+Plus®.) 3. When all of the collected materials have been removed, the filter medium pouches shall be removed by unsnapping the tether from the D-ring and set to one side. The filter liner, gaskets, stainless steel frame and mounting brackets, etc. shall be inspected for continued serviceability. Minor damage or defects found shall be corrected on-the-spot and a notation made on the Maintenance Record. More extensive deficiencies that affect the efficiency of the filter (tom liner, etc.), if approved by the customer representative, will be corrected and an invoice submitted to the representative along with the Maintenance Record. 4. The filter medium pouches shall be inspected for defects and continued serviceability and replaced as necessary and the pouch tethers re-attached to the liner's D-ring. 30 5. The grate shall be replaced. Replacement And Disposal Of Exposed Filter Medium And Collected Debris The frequency of filter medium pouch exchange will be in accordance with the existing DPS-Customer Maintenance Contract. DPS recommends that the medium be changed at least once per year. During the appropriate service, or if so determined by the service technician during a non-scheduled service, the filter medium pouches will be replaced with new pouches. Once the exposed pouches and debris have been removed, DPS has possession and must dispose of it in accordance with local, state and federal agency requirements. Note: As the generator, the landowner is ultimately responsible for the proper disposal of the exposedfilter medium and debris. Because the filter media likely contain petroleum hydrocarbons, heavy metals and other harmful pollutants, the materials must be treated as an EPA Class 2 Hazardous Waste and properly disposed of. DPS relieves the landowner of the actual disposal task, and provides certification of its completion in accordance with appropriate regulations. DPS also has the capability of servicing all manner of catch basin inserts and catch basins without inserts, underground oil/water separators, stormwater interceptors and other such devices. All DPS personnel are highly qualified technicians and are confined space trained and certified. Call us at (888) 950-8826 for further information and assistance. Maintenance Frequency The owner/applicant shall prepare and submit to the City of San Diego's Engineering Department for approval a maintenance indicator document. This document shall list the schedule of maintenance activities to be implemented for the project. Debris and Sediment Disposal Waste generated from the project is ultimately the responsibility of owner/applicant. Disposal of sediments, debris, and trash will comply with applicable local, county, state, and federal waste control programs. Hazardous Waste Suspected hazardous wastes will be analyzed to determine disposal options. Hazardous wastes generated onsite will be handled and disposed of according to applicable local, state, and federal regulations. A solid or liquid waste is considered a hazardous waste if it exceeds the criteria listed in the CCR, Title 22, and Article 11. 31 ATTACHMENT "G" INSPECTION & MAINTENANCE SCHEDULE PREVENTATIVE MAINTENANCE AND ROUTINE INSPECTION TYPE BMP Routine Action Measurement Indicator Measurement Frequency MAINTENANCE ACTIVITY SITE-SPECIFIC REQUIREIVIENTS Media Filters Trash free and removal of silt, sedimentation & Debris Silt build up of more than (see manufactures specifications) 30 days prior to October 15th each year and weekly during rain season. Remove trash and silt. Replace Fossil filters Annually 30 days prior to October l". , All Fossil-filters, inlets to be free from trash and silt at all times storm Water Conveyance system Stenciling & Signing Must be legible at all times and have a clear view. Fading of paint or Illegible letters or 30 days prior to October 15th each year and weekly during rain season & semi-annual Repaint stenciling and/or replace signs 30 days prior to October 1st. All stenciling and signs 32 ATTACHMENT "H" Cost Estimate to Maintain all BMPs Amount: 1. Operation & Maintenance Of BMPs Annual 10 Year Inspection and certification — Listed below 1.1 Drainage Inserts: The replacement of Fossil Filter once a year annually is estimated at — — $500.00 $5,000.00 1.2 Stormdrain Stencils (As needed or every 2 years) $200.00 $1,000.00 Total Estimated Annual Cost to Maintain BMPs — ~ $700.00 $6,000.00 33 ATTACHMENT I 34 DRMNACE SmUCTURE FLOW LANDSCAPE AND HVHHAVON STTF OESGIV SMP SOURCE CONTROL BUP TREATUENT CONTROL BHP SD SC TC sou « FEET 1- - 2cr BMP NOTES: • Slow am HBS m « smam mm nomemm mame: THS pmta SHm. BE CCSKMED lo me nmn AMD/mjcmii icmoos OF nmm man TO muBE X KUMOFF OF excess KHBUai mUBI HK IK SOW MIBI aMEXWOT SISTOei WE mumK laae TO OBUCE ExixssNE «mm»i mNOFF SH/iL BE otxemik im lamRaa Ml mjoBOED. . DESBme maam smm TO EKH iMOSciiPE MfAS sPBirc anjame FMH smiVFF ixuKES TO PKXiir mami /riBi mcmmm (SRC nor HEDUcss og SHUTOFF MUGS innxKD BY PIBSUHE oar TOP COHIRX wm uoss n aoir OF BROKEN sfonat HBOS OR UHES. aeume cmts oomjoE. Etrnvt imatK itMos m RCLUCE msaai RUHOir. BMP MAP SHEET 1 CITY OF CARLSBAD PgPgERING lEPARTHENT SHEETS 1 BHP FLAN FOR ARENAL ROAD APPROVED OTY ENaNEER FE ENCMB) or «ant REVISION OESCRIPTION OMR JVraCMN. OWN BY: _ CHKO BY:. RVWO BY:.