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HomeMy WebLinkAboutCT 11-01; Robertson Ranch West; Tentative Map (CT) (3)--.. -.. - - - - ... .. --- - - --- --.. - .. -- PRELIMINARY STORM WATER MANAGEMENT PLAN For ROBERTSON RANCH WEST VILLAGE (RANCHO COSTERA) TENTATIVE MAP C.T. 11-01 Prepared: April 29, 2011 Updated: August 2, 2011 Updated: October 24, 2011 Updated: December 19, 2011 Updated: April30, 2012 J.N. 10-1307-5 Prepared By: O'DAY CONSULTANTS, INC. 2710 Loker Avenue West, Suite 100 Carlsbad, CA 92010-6609 (760) 931-7700 xp. 12/31/12 -.. ... • TABLE OF CONTENTS .. • TABLE OF CONTENTS ................................................................................ 1 ,.. 1. PROJECT SETTING ........................................................................... 3 • 2. APPLICABLESTORMWATERSTANDARDS ......................... 3 --- - .... -- -- - - .... - ... --- 2a. 2b. 3. Storm Water Standards Questionnaire .......................................... 3 HMP Applicability Determination ................................................ 4 IDENTIFY POLLUTANTS OF CONCERN .............................. .4 3a. Identify pollutants associated with type of project/use ................ .4 3b. Identify watershed, hydrologic unit basin and receiving waters .. .4 3c. List impaired water bodies ........................................................... .4 3d. Beneficial uses of receiving water ................................................ .4 3e. Summarize primary pollutants of concern .................................... 6 4. SOURCE CONTROL MEASURES ................................................... 6 4a. Description of site activities and potential sources of pollutants .. 6 4b. Stormwater Pollutant Sources and Source Controls ...................... 6 5. LOW IMPACT DEVELOPMENT (LID) DESIGN STRATEGIES .. 6 5a. Optimization of site layout ............................................................ 6 1) Limitation of development envelope ............................................. 6 2) Preservation of natural drainage features ...................................... 7 3) Setbacks of creeks, wetlands, and riparian habitats ....................... 7 4) Using drainage as design element ................................................. 7 5b. Layout and use of pervious surfaces ............................................. 7 5c. Dispersal of runoff from impervious areas to pervious areas ........ 7 6. INTEGRATED MANAGEMENT PRACTICES (IMP's) .................. 7 6a. Selection process for IMP's ........................................................... 7 6b. Sizing factors for IMP's ................................................................ 8 6c. Geotechnical recommendation on soil infiltration rates ................ 8 6d. Infiltration calculations .................................................................. 8 7. TREATMENT CONTROL BMP's ..................................................... 8 8. HYDROMODIFICATION .................................................................. 8 9. DOCUMENTATION OF STORMWATER WATER DESIGN ........ 8 9a. Hydrology maps ............................................................................ 8 9b. BMP Sizing Calculator .................................................................. 8 9c. Tabulation ...................................................................................... 9 10. BMP FACILITY MAINTENANCE REQUIREMENTS ................... 9 lOa. Ownership and responsibility of maintenance of BMP' s .............. 9 lOb. Summary of maintenance requirements ........................................ 9 11. SWMP CERTIFICATION STATEMENTS ..................................... 11 1 G:\101307\SWMP\MasterTM\Sth Submittal\120430-PSWMP.doc .. - ... - - .. - ---- Attachments: Vicinity map Storm Water Standards Questionnaire 1. 2. 3. 4 . 5. Figure 2-1 HMP Applicability Determination Table 2-1: Anticipated and Potential Pollutants San Diego Region Hydrologic Boundary Map 6. 303(d) list for impaired water bodies 7. 8. Table 2-3 Beneficial Uses of Coastal Waters Stormwater Pollutant Sources and Source Control Checklist 9. Figure 2-2 Decision Matrix 10. BMP exhibit 11. BMP Calculator Output 2 G: \10 1307\SWMP\M asterTM\5 th Sub mit tal\ 120430-PSWMP .doc - • .. --- - - - - - - .. - .. - - 1 . PROJECT SETTING The project site is located within the Rancho Agua Hedionda, in the City of Carlsbad, County of San Diego, State of California. Furthermore, the project site is located along the northerly side of El Camino Real between Tamarack Avenue and Cannon Road (See Vicinity Map, Attachment 1). Rancho Costera will consist of thirteen mass-graded master lots as well as three open space lots. The required infrastructure includes sanitary sewer, water, gas, electric, cable television, storm drain systems and streets. Rancho Costera will install perimeter site access and sediment and/or erosion control and "in tract" slope control in advance of site improvements and as deemed appropriate for site conditions. Surface run-off and stormwater collected by the proposed drainage system will be discharged ultimately into two locations. The eastern portion will discharge into the eastern open space corridors, then through an 8'x8' box culvert under El Camino Real, and ultimately into Agua Hedionda Lagoon. The western portion will be conveyed by a public storm drain within El Camino Real or the existing double 8'x4' box culvert under El Camino Real to the channel approximately 150' east of Kelly Drive, and ultimately to the Agua Hedionda Lagoon. This Storm Water Management Plan will provide guidelines in developing and implementing best management practices (BMPs) for storm water quality. These include both source control BMPs, treatment control BMPs, and hydromodification controls. Source control BMPs prevent contact between the storm water and the pollution source. Treatment control BMPs are those that treat the storm water to remove the pollutant. The proposed project can be broken down into two distinct phases: construction and post construction. Construction would be the period when the project is being mass graded and all improvements shown on the tentative map are being installed. These include mass graded lots, major storm drain system, temporary desilting basin, all slopes will be landscaped and irrigated. Post construction would occur when all the improvements have been installed. These would include, but not limited to, streets, storm drain, additional landscaping, treatment control facilities, and hydromodification facilities. 2. APPLICABLE STORMWATER STANDARDS 2a. Storm Water Standards Questionnaire Per the Storm Water Standards Questionnaire (SWSQ), this project meets PRIORITY DEVELOPMENT PROJECT (PDP) requirements and must comply with additional stormwater criteria per the SUSMP. (See Attachment 2 for completed SWSQ) 3 G:\101307\SWMP\MasterTM\Sth Submittal\120430-PSWMP.doc -• .. • ------ - - - ·- ·- - -- .. - 2b. HMP Applicability Determination Per Figure 2-1 of the SUSMP, Hydromodification controls are required. (See Attachment 3 for Figure 2-1 HMP Applicability Determination.) It was determined that field investigations would not be conducted pursuant to the SCCWRP channel screening tools. Therefore the site must mitigate peak flows and durations based on a pre-project condition lower flow threshold of 0.1 Q2. 3. IDENTIFY POLLUTANTS OF CONCERN 3a. Identify pollutants associated with type of project/use Per Table 2-1 of the SUSMP (see Attachment 4), the pollutants anticipated from this development are: Sediment Nutrients Heavy Metals Organic Compounds (including petroleum hydrocarbons) Trash & Debris Oxygen Demanding Substances (including solvents) Oil & Grease (due to uncovered parking areas) Bacteria & Viruses Pesticides (potentially, due to landscaping on-site) 3b. Identify watershed, hydrologic unit basin and receiving waters The project is located in the Los Monos Hydrologic Subarea (904.31) of the Agua Hedionda Watershed in the Carlsbad Hydrologic Unit in the San Diego Region (Attachment 5). Under both existing and proposed conditions, storm runoff from the Rancho Costera Site is eventually conveyed to the Agua Hedionda Lagoon. 3c. List impaired water bodies According to the California 2006 303(d) list published by the RWQCB (Attachment 6), Agua Hedionda Lagoon is an impaired water body associated with the stormwater discharge from this project. Agua Hedionda Lagoon has impairment for Indicator bacteria and sedimentation/siltation. Sites tributary to Clean Water Act Section 303(d) water bodies require additional BMP implementation. 3d. Beneficial uses of receiving water The beneficial uses for the hydrologic unit are included in Attachment 7, and the definitions are listed below. This information comes from the Water Quality Control Plan for the San Diego Basin 9, Chapter 2, Beneficial Uses. IND-Industrial Service Supply: Includes uses of water for industrial activities that do not depend primarily on water quality including, but not limited to, mining, cooling water supply, hydraulic conveyance, gravel washing, fire protection, or oil-well repressurization . 4 G:\101307\SWMP\MasterTM\Sth Submittai\120430-PSWMP.doc .. • ... • • --- - - - - - - - .. - • ------ NAV-Navigation: Includes uses of water for shipping, travel, or other transportation by private, military, or commercial vessels . REC 1-Contact Water 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 . REC 2 -Non-Contact Water Recreation: Includes the uses of water for recreational activities involving proximity to water, but not normally involving body contact with water, where ingestion of water is reasonably possible. These include, but are not limited to, picnicking, sunbathing, hiking, beachcombing, camping, boating, tide pool and marine life 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. 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. EST-Estuarine Habitat: Includes the uses of water that support estuarine ecosystems including, but not limited to, preservation or enhancement of estuarine habitats, vegetation, fish, or wildlife (e.g., estuarine mammals, waterfowl, 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), or wildlife water food and sources. RARE -Rare, Threatened, or Endangered Species: Includes uses _of water that support habitats necessary, at least in part, for the survival and successful maintenance of plant or animal species established under state or federal law as rare, threatened or endangered. MAR -Marine Habitat: Includes uses of water that support marine ecosystems including, but not limited to, preservation or enhancement or marine habitats, vegetation such as kelp, fish, shellfish, or wildlife (e.g., marine mammals, shorebirds). AQUA-Aquaculture: Includes the use 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. 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 of fish. This use is applicable only for the protection of anadromous fish. 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. 5 G:\101307\SWMP\MasterTM\Sth Submittal\120430-PSWMP.doc ... .. .. ---- - SHELL -Shellfish Harvesting: Includes uses of water that support habitats suitable or the collection of filter-feeding shellfish (e.g., clams, oysters, and mussels) for human consumption, commercial, or sport purposes . 3e. Summarize primary pollutants of concern The primary pollutants of concern for this project are Sediment, Nutrients, Heavy Metals, Organic Compounds, Trash & Debris, Oxygen Demanding Substances, Oil & Grease, Bacteria & Viruses, and Pesticides. The use of bioretention facilities for the runoff from the proposed streets should be a highly effective method of treating Coarse Sediment and Trash, and Pollutants that tend to associate with fine particles during treatment. Bioretention facilities also show medium effectiveness for treatment of Pollutants that tend to be dissolved following treatment. The use of sediment basins and hydroseeding will be effective treatment for the runoff from the mass-graded master lots. 4. SOURCE CONTROL MEASURES 4a. Description of site activities and potential sources of pollutants Potential sources of pollutants on the project site include: -On-site storm drain inlets Landscape/Outdoor Pesticide Use Street and sidewalks -- ... • ---• -- - • 4b. Stormwater Pollutant Sources and Source Controls See attachment 8 for Stormwater Pollutant Sources and Source Control Checklist. This checklist identifies potential sources of runoff pollution and references to the source control BMPs that need to be included in this project. These BMPs are also referenced on the BMP Exhibit, Attachment 10 . 5. LOW IMP ACT DEVELOPMENT (LID) DESIGN STRATEGIES The mass-graded master lots and required streets proposed with this Master Tentative Map will provide the backbone for the ultimate development of the Rancho Costera Site. The ultimate development will implement the use of Low Impact Development Design Strategies throughout the planning through approval stages. The mass-graded condition provides little opportunity to fully utilize these LID design strategies. As each lot is individually developed, an updated Storm Water Management Plan will be required. Sa. Optimization of site layout 1) Limitation of development envelope The development envelope of the Rancho Costera Site is 132.79 acres of the total site of 201.37 acres. This site designates the remaining 68.58 acres to Open Space that is intertwined throughout the site to maintain a balance of development and open space areas. 6 G: \ l 0 1307\SWMP\MasterTM\Sth Submittal\ 120430-PSWMP .doc .... • .. • .. -- --- - - --.. -- ----• -• -• ... - 2) Preservation of natural drainage features The natural terrain in the Open Space lots is preserved, along with its natural drainage features . 3) Setbacks of creeks, wetlands, and riparian habitats The site development is limited by a Habitat Management Plan (HMP) hardline that defines areas of Open Space to be preserved for the preservation of the existings creeks, wetlands, and habitats . 4) Using drainage as design element The planned development has been laid out to take advantage of the natural topography and drainage patterns. Sb. Layout and use of pervious surfaces The pervious surfaces for this phase of the project are limited to the required streets. Sc. Dispersal of runoff from impervious areas to pervious areas Wherever possible, an attempt was made to direct runoff from impervious areas to pervious areas. 6. INTEGRATED MANAGEMENT PRACTICES (IMP's) 6a. Selection process for IMP's According to Table 2-2 of the SUSMP, The majority of pollutants of concern for this project can be grouped in the category of Pollutants that tend to associate with fine particles during treatment. Nutrients also fall under the category of Pollutants that tend to be dissolved following treatment and Trash & Debris falls under the category of Coarse Sediment and Trash . According to Table 2-3, Infiltration Facilities provide the highest effectiveness for removal of pollutants in all three categories but our site is constrained by impermeable soils. Bioretention Facilities were chosen to treat the runoff from the streets for their high removal rates for Coarse Sediment and Trash and Pollutants that tend to associate with fine particles during treatment and their medium removal rates for Pollutants that tend to be dissolved following treatment. Bioretention facilities detain stormwater and filter it slowly through soil or sand and are versatile in that they can be any shape and can be landscaped. NOTE: This project is proposing the use ofBioretention Facilities for IMP treatment. However, based upon the future recommendations of the Soils Engineer the IMP Treatment may change to Flow-Through Planter design. The intent, however, is to maintain the 4% Treatment Areas. 7 G:\ I 0 l307\SWMP\MasterTM\5th Submittal\120430-PSWMP.doc ... • .. • • ... • -- - - - • - - ... -... .. -.. • .. • 6b • Sizing factors for IMP's 1) Lower flow threshold determination Field investigations were not conducted pursuant to SCCWRP screening tools. Therefore, the site must mitigate peak flows and durations based on a pre-project condition lower flow threshold of 0.1 Q2 . 2) HMP Decision Matrix IMP facilities were sized using the Decision Matrices in Figures 2-2 (See Attachment 9). 6c. Geotechnical recommendation on soil infiltration rates IMP facilities were chosen that do not drain through native soil, as soil infiltration rates were anticipated to be low. 6d. Infiltration calculations Self-retaining areas were not utilized on this site, as soil infiltration rates were anticipated to be low. 7. TREATMENT CONTROL BMP's IMP sizing approach was used, therefore Treatment Control BMP' s are incorporated into the IMP calculations. 8. HYDROMODIFICATION IMP sizing approach was used, therefore hydromodification requirements are incorporated with the use of IMP's . 9. DOCUMENTATION OF STORMW ATER WATER DESIGN 9a. Hydrology maps The hydrology map showing the DMA's to IMP's is included in Attachment 10 . 9b • BMP Sizing Calculator Output from the BMP Sizing Calculator is included in Attachment 11 . 8 G:\101307\SWMP\MasterTM\Sth Submittai\120430-PSWMP.doc ""' • ... .. --.. -- - -• -• -... -• - ---- 9c. Tabulation The DMAs are shown on the BMP Exhibit, Attachment 10, and outlined in BMP Calculator results, Attachment 11. 10. B:MPFACILITY MAINTENANCE REQUIREMENTS lOa. Ownership and responsibility of maintenance of B:MP's The Owner and Developer will be responsible for the maintenance of treatment facilities. Ongoing maintenance will be assured by executing a Permanent Stormwater Quality BMP Maintenance Agreement that "runs with the land." lOb. Summary of maintenance requirements Bioretention facilities remove pollutants primarily by filtering runoff slowly through aerobic, biologically active soil. Routine maintenance is needed to ensure that flow is unobstructed, that erosion is prevented, and that soils are held together by plant roots and are biologically active. Typical maintenance consists of the following: • Inspect inlets for channels, exposure of soils, or other evidence of erosion. Clear any obstructions and remove any accumulation of sediment. E~amine rock or other material used as a splash pad and replenish if necessary. • Inspect outlets for erosion or plugging. • Inspect side slopes for evidence of instability or erosion and correct as necessary. • Observe the surface of bioretention facility soil for uniform percolation throughout. If portions of the bioretention facility do not drain within 24 hours after the end of a storm, the soil should be tilled and replanted. Remove any debris or accumulations of sediment. • Confirm that check dams and flow spreaders are in place and level and that rivulets and channelization are effectively prevented. • Examine the vegetation to ensure that it is healthy and dense enough to provide filtering and to protect soils from erosion. Replenish mulch as necessary, remove fallen leaves and debris, prune large shrubs or trees, and mow turf areas. When mowing, remove no more than 1/3 height of grasses. Confirm that irrigation is adequate and not excessive and that sprays do not directly enter overflow grates. Replace dead plants and remove noxious and invasive vegetation. • Abate any potential vectors by filling holes in the ground in and around the bioretention facility and by insuring that there are no areas where water stands longer than 48 hours following a storm. If mosquito larvae are present and persistent, contact the San Diego 9 G:\101307\SWMP\MasterTM\Sth Submittal\120430-PSWMP.doc - - ... .. • .. -- - - -- ·- .. .. • .. --·--- County Vector Control Program for information and advice. Mosquito larvicides should be applied only when absolutely necessary and then only by a licensed individual or contractor. 10 G:\101307\SWMP\MasterTM\Sth Submittal\120430-PSWMP.doc .. .. .. • -• -• .. -- 11. SWMP CERTIFICATION STATEMENTS lla. Preparer's statement The selection, sizing, and preliminary design of storm water treatment and other control measures in this plan meet the requirements of Regional Quality Control Board Order R9-2007-0001 and subsequent amendments. -llb. Owner's statement - -- -• ---• ... - --- - - The selection, sizing, and preliminary design of stormwater treatment and other control measures in this plan meet the requirements of Regional Quality Control Board Order R9-2007-0001 and subsequent amendments. Rancho Costera, LLC c/o John Buller Shapell Homes G:\101307\SWMP\MasterTM\Sth Submittal\120430-PSWMP.doc Date 11 .. • .. .. .... - -- ... .. ... -- - .... ---,. - .. CITY OF OCEANSIDE PACIFIC OCEAN CITY OF VISTA CITY OF ENCINITAS VICINITY MAP NO SCALE .. - • .. -.. - --- -- .... - .. • - - - • ~ «.t4' ~ CITY OF CARLSBAD STORM WATER STANDARDS QUESTIONNAIRE E-34 ,I Development Services Land Development Engineering 1635 Faraday Avenue 760-602-2750 - www.carlsbadca.gov To address post-development pollutants that may be generated from development projects, the CUy requires that new development and significant redevelopment priority projects incorporate Permanent Stann Water Best Management Practices (BMP's) into the project design per the City's Standard Urban Stonnwater Management Plan (SUSMP). To view the SUSMP, refer to the Engineering Standards (Volume 4, Chapter 2) at www.car1sbadca.gov/standards. Initially this questionnaire must be completed by the applicant In advance of submitting for a development application (subdivision, discretionary permits and/or construction pennits). The results of the questionnaire determine the level of storm water standards that must be applied to a proposed development or redevelopment projecl Depending on the outcome, your project will either be subject to 'Standard Stonnwater Requirements' or be subject to additional criteria called 'Priority Development Project Requirements'. Many aspects of project site design are dependent upon the storm water standards applied to a project. Your responses to the questionnaire represent an initial assessment of the proposed project conditions and impacts. City staff has responsibility for making the final assessment after submission of the development application. If staff determines that the questionnaire was incorrectly filled out and is subject to more stringent stonn water standards than initially assessed by you, this will result in the return of the development application as Incomplete. In this case. please make the changes to the questionnaire and resubmit to the City. If you are unsure about the meaning of a question or need help in determining how to respond to one or more of the questions, please seek assistance from Land Development Engineering staff. A separate completed and signed questionnaire must be submitted for each new development application submission. Only one completed and signed questionnaire is required when multiple development applications for the same project are submitted concurrently. In addition to this questionnaire, you must also complete, sign and submit a Project Threat Assessment Form with construdion permits for the project. Please start by completing Section 1 and follow the instrucUons. When completed, sign the form at the end and submit this with your application to the city • BHf~MtMCI. that sells drinks consumption, Including lunch counters and refreshment stands selling prepared foods and drinks for Immediate consumption (SIC code 5812t where the land area for development is greater than 5,000 square feet Restat..rants where land development Is lese than 5,000 square feet shall meet all SUSMP requirements except fOr structural treatment BMP and numeric sizing criteria and E-34 Page 1 of3 REV 1114111 X ... • ... • ... -- - ---- - ... ---- - -- 6. 7. 8. 9. «~ ~ CITY OF CARLSBAD STORM WATER STANDARDS QUESTIONNAIRE E-34 Development Services land Development Engineering 1635 Faraday Avenue 76D-602-2750 - www.carlsbadca.gov Hl{(tlde dewlopment Any development that aeates more than 5,000 square feet of impervious surface and is located In an area with known erosive soli conditions, where the development wiU grade on any natural slope that Is X twenty-five percent (25%) or greater. Envl"'yflmentaflr Sen!ltlye At!a CESAJ'. All development located within or directly adjacen~ to or dischargllll direCti to an ESA (where discharges from the development or redevelopment will enter receiving waters within the ESA), which either creates 2,500 square feet or more of impervious surface on a proposed project site or Increases the area of imperviousness of a proJect site 10% or more of Its naturally occurring condition. X parlc!ng lot Area of 5,000 square feat or more, or with 15 or more parking spaces, and potentially exposed to urban X runoff Streef!. I'Oidf. h/ghwal(!, and fr!ewavs. Any paved surface that Is 5,000 square feet or greater used for the transportation of automobiles, trucks, motorcycles, and other vehicles ;x. 10. B!t!ll fi.uollat. Outlets. Serving more than 100 vehicles per day and greater than 5,000 square feet .x· 11. Coutaf Dem/opmellt Zone. Any project located within 200 feet of the PacifiC Ocean and (1) aeates more than >< 2500 square feet of impervious surface or (2) Increases Impervious surface on property by more than 10%. 12. Mota fhM f::fCI! of dlftllrbllnce. Pro.Jec?t results in the disturbance of 1-aae or more of land and Is considered a Pollutant-generating Development Project4• X 1 Environmentally Sensitive Arus Include but are not llmltad to all Clean Water At:l Section 303(d) tmpalrad wa1er bodies, antas diiiQnated as Antas 0( Special Biological Significance by the State Wlltlll' Resources Control Board (Water Quality Control Plan for the San Diego Basin (1994) and amendments~ water bodies designated with lhe RARE benellclal use by the Stale Water Resources Control Board (Water QuaUty Control Plan for the San Diego Basin (1994) and amendments); areas designated as preserves or their equivalent under the Multi Spades Consii!Vallon Program wlthln the Cities and County at San Diego: and any olher equivalent envlronrnentaly senaitive ereas which hive been ldenllfted by the Copermltlees. 2 'Directly adjacent" means situated ~ 200 feet af the EnvlronmentaUy Sensitive Area. 3 ·ol&charging dlreclly to• means outfloW from a dralnege conveyance ayatem that 11 composed enUrely or ftowa from the subject development or redevelopment site, and not commingled with flow trom adjacent lands. 4 Pollutant-generating Development ProJec;ls are those projects that generate pollulanb at Jevals greater than background levels. In general, tnese lnc:IUde a1 pi'Djecls that contribute to an exceedence to an lmpalnld water body or which c:raate new Impervious surfac:ea greater than 5000 square faet and/or Introduce new landselplng areas that 111qulre routine use at fettlllzers and pesticides. In 11101t cases linear pathwlly projects that 11re for Infrequent vehicle use, such as emergency or lllllnte111nce access, or ror pedestrian or bicycle use, are not considered Pollutant-generating Development Projects If they an~ Wit with pervious surfaces or If !hey sheat flow to surrounding pervious surfaces. INSTRUCTIONS: Jtctlon 1 Reau!tt; If you answered YES to ANY of the questions above, your profect Is subJect to Priority Dewlopment Project reqUirements. Skip Section 2 and please proceed 1D Section 3. Check the "meets PRIORITY DEVELOPMENT PROJECT requirements• box In Sec:tion 3. Additional slolm water requirements v.ill apply per the SUSMP. If you answered NO to ALL of the questions above, then please proceed ID Secllon 2 and follow the Instructions . E-34 Page2of3 REV1/14111 • • • - -• - -- - • ""' • - .. • - - --- - --.. ~. ¥ CITY OF CARLSBAD STORM WATER STANDARDS QUESTIONNAIRE E-34 Deve/ooment Services Land Development Engineering 1635 Faraday Avenue 760-602-2750 - www.carlsbadca.gov secnotiz .. SiGNifldAHflREDMLOPMENT ,· •''. '·'·"' ' : ,'•• \' ~:"' ". :,:~ '' .: ~· . i~ -; ' ' .• ;, .. ' . ,. INSTRUCTIONS: Complete the questions below regarding your project YES NO 1. Project results In the disturbance of 1-acre or more of land and I& oonsldered a Pollutant-generating Development ProJect*? INSTRUCTIONS: If you answered NO, please proceed to question 2. If you answered YES, then you ARE a significant redevelopment and you ARE subject to PRIORITY DEVELOPMENT PROJECT requirements. Please check the "meets PRIORITY DEVELOPMENT PROJECT requirements• box in Section 3 below. 2. Is the project redeveloping an existing priority project type? (Priority projects are defined in Section 1) INSTRUCTIONS: If you answered YES, please proceed to question 3. If you answered NO, then you ARE NOT a significant redevelopment and your project is subje<;tto STANDARD STORMWATER REQUIREMENTS. Please check the "does not meet PDP reauirements• box in Section 3 below. 3. Is the work limited to trenching and resurfacing associated with utility work; resurfacing and reconfiguring sudace paridng lots and existing roadways; new sidewalk; bike lane on existing road andfor routine maintenance of damaged pavement such as pothole repair? Resurfaclnglreoonflguring parking lots Is where the woric does not expose underlying soli during construction. INSTRUCTIONS: If you answered NO, then proceed to question 4. If you answered YES, then you ARE NOT a significant redevelopment and your project is subject to STANDARD STORMWATER REQUIREMENTS. Please check the "does not meet PDP requirements• box in Section 3 below. 4. Will your redevelopment project aeate, replace, or add at least 5,000 square feet of Impervious surfaces on existing developed property or will your project be located within 200 feet of the Pacltlc Ocean and (1) create 2500 square feet or more of impervious sudace or (2) increases impervious surface on the property by more than 10%? Replacement of existing impervious sudaces Includes any activity that Is not part of routine maintenance Where Impervious materfa~s) are removed, exposing underlying soli during oonstructlon. INSTRUCTIONS: If you answered YES, you ARE a significant redevelopment, and you ARE subject to PRIORITY DEVELOPMENT PROJECT requirements. Please check the "meets PRIORITY DEVELOPMENT PROJECT requirements" box in Section 3 below. Review SUSMP to find out If SUSMP requirements apply to your project envelope or the entire project site. If you answered NO, then you ARE NOT a significant redevelopment and your project Is subject to STANDARD STORMWATER REQUIREMENTS. Please check the "does not meet PDP requirements• box in Section 3 below . 0 "for definition see Footnote 4 on page 2 My project meets PRIORITY DEVELOPMENT PROJECT (PDP) requirements and must oomply with additional stormwater criteria per the SUSMP and I understand I must prepare a Storm Water Management Plan for submittal at time of application. I understand flow oontrol (hydromodlflcatlon) requirements may apply to my project. Refer to SUSMP for details. My project does not meet PDP requirements and must only oomply with STANDARD STORMWATER REQUIREMENTS per the SUSMP. As of these ulrements, I wllllnoo e low lm act develo ment strat ies thro hout m ect. Applicant lnfonnalion and Signature Box Assessor's Parcel Numbar(s): 2/J8-{) 10-{) City Concurrence: I YES I NO I I By. Date: Plojec:t to: E-34 Page 3 of3 REV 1/14/11 ... SECTION 2: IDENTIFY POLLUTANTS, BMP SIZING AND SELECTION • .. • .. ----- ,. --- --W) ------"'ii'j • -----.. --30 City of Carlsbad SUSMP -January 14, 2011 .... - - • .. .. .. • .... ----- .... - -- --.. ---- • ---.. I -p!ll- GIIAI'HIC $CAU 0 4 UIILIS ,....-; I ••• --- ......... ...._ __ LEGEND DRAINAGe PROVINCE BOUNDARY HYDROLOGIC UNIT BOUNDARY HYDROLOGIC AREA BOUNDARY HYDROLOGIC SUBAREA BOUNDARY .. .... ,. FIGURE 1-2. SAN DIEGO REGION HYDROLOGIC UNITS AREAS, AND SUBAREAS FIGURE 1-2 INTRODUCTiON t-7 Saprernber 8, 1994 . ' • I I I I I i a • I i: I I I I I I • • • I I I a 2006 CWA SECTION 303(d) LIST OF WATER QUALITY LIMITED SEGMENTS REQUIRING TMDLS REGIO:"i TYPE 9 R Agua Hedionda Creek 9 E Agua Hedionda Lagoon 9 R Aliso Creek SAN DIEGO REGIONAL WATER QUALITY CONTROL BOARD CAL WATER WATERSHED 90431000 90431000 90113000 POLLllTA:'IiT/STRESSOR Manganese Selenium Sulfates Total Dissolved Solids Indicator bacteria Sedimentation/Siltation Indicator bacteria POTE!\Tl-\L SOl1RCES Source Unknown Source Unknown Source Unknown Urban Runoff/Storm Sewers Unknown Non point Source Unknown point source Non point/Point Source Nonpoint/Point Source lT'ttPA Al'PRO\'.\L !HTE: JV'IE 2~. 2007 ESTIMATED PROPOSED DIDL SIZE AFFECI'ED COMPLETION 7 Miles 2019 7 Miles 2019 7 Miles 2019 7 Miles 2019 6.8 Acres 2006 6.8 Acres 2019 19 Miles 2005 This listing for indicator bacteria applies to the Aliso Creek mainstem and all the major tributaries of Aliso Creek which are Sulphur Creek. Wood Canyon, Aliso Hills Canyon, Dairy Fork, and English Canyon. Phosphorus Urban Runoff/Storm Sewers Unknown point source Nonpoint/Point Source 19 Miles 2019 This listing for phosphorus applies to the Aliso Creek mains/em and a lithe major tributaries of Aliso Creek which are Sulphur Creek. Wood Canyon, Aliso Hills Canyon, Dairy Fork. and English Canyon. Page 1 of27 Urban Runoff/Storm Sewers Unknown Nonpoint Source Unknown point source II I I I l • I I I • a a • • • • J I i t I J I I I I • • l • l I • I I i Table 2-3. BENEFICIAL USES OF COASTAL WATERS BENEFICIAL USE Hydrologic R R c B w R A M s w s Unit Basin I N E E 0 I E I A M Q I p A H Coastal Waters N A s A E Number D v c c M 0 T L R R u G w R L 1 2 M L D E A R N M L Pacific Ocean • • • • • • • • • • • • • Dana Point Harbor • • *1: • • • • • • Del Mar Boat Basin • • • • • • • • Mission Bay • • • • • • • • • • • Oceanside Harbor • • • • • I • • • • • • San Diego Bay 1' 3 I• • • • • • • • • • • • •· Coastal Lagoons Tijuana River Estuary 11 . 11 • * • • • * • • • Mouth of San Diego River 7.11 • • • • • • Famosa Slough and Channel 7.11 • • • • • • • • los Penasquitos Lagoon 2 6.10 • • • • • • • • • • San Dieguito lagoon 5.11 • • • • • • • • Batiquitos lagoon 4.51 ht • • • • • • • • • San Elijo lagoon 4.61 • • • :H • • • • Agua Hedionda Lagoon 4.31 • • • • • • • • • • 1 Includes the tidal prisms of the Otay and Sweetwater Rivers. 2 Fishing from shore or boat permitted, but other water contact recreational (REC-1) uses are prohibited. 3 The Shelter Island Yacht Basin portion of San Diego Bay is designated as an impaired water body for dissolved copper pursuant to Clean Water Act section 303(d). A Total Maximum Daily Load (TMDL) has been adopted to address this impairment. See Chapter 3, Water Quality Objectives for Pesticides, Toxicity and Toxic Pollutants and Chapter 4, Total Maximum Daily Loads. • Existing Beneficial Use Table 2-3 BENEFICIAL USES 2-52 I'. I I I l I I I li II ll ll l:j t iII II I a II II II II fll Table 2-3. BENEFICIAL USES OF COASTAL WATERS BENEFICIAL USE Hydrologic R R c B Unit Basin I N E E 0 I E Coastal Waters N A s Number D v c c M 0 T 1 2 M L Coastal Lagoons -continued Buena Vista Lagoon 2 4.21 • • • 0 Loma Alta Slough 4.10 • • • Mouth of San Luis Rey River 3.11 • • Santa Margarita Lagoon 2.11 • • • Aliso Creek Mouth 1 .13 • • San Juan Creek Mouth 1.27 • • San Mateo Creek Mouth 1.40 • • • San Onofre Creek Mouth 1 .51 • • 2 Fishing from shore or boat permitted, but other water contact recreational (REC-1) uses are prohibited. • Existing Beneficial Use 0 Potential Beneficial Use Table 2-3 BENEFICIAL USES 2-53 w R I A L R D E • • • • • • • • • • • • • • • • A M s w s M 0 I p A H A E R u G w R L A R N M L • • • • • • • • • • • • • • • • • • • j l I I J I • • I I I I a a I I • j l I I j • i • • • l Stormwater Pollutant Sources and Source Control Checklist How to Use this Checklist: 1. Review Column 1 and identify which of these potential sources of stormwater pollutants apply to your project. Check each box that applies. 2. Review Column 2 and incorporate all of the corresponding applicable BMPs in your SUSlvf.P Drawings. 3. Review Columns 3 and 4 and incorporate all of the corresponding applicable permanent controls and operational BMPs in a table in your SUSMP Drawings. For PDP's, in your SWMP, use the format shown in Table 3-1. In the SWMP, describe your specific BMPs in an accompanying narrative, and explain any special conditions or situations that required omitting BMPs or substituting alternatives. IF THESE SOURCES WILL BE ON THE ... THEN YOUR PROJECT SHOULD INCLUDE THESE SOURCE CONTROL BMPs PROJECT SITE ••. 1 2 3 4 Potential Sources of Permanent Controls-Show on Permanent Controls-List in SWMP Operational BMPs-lnclude in Runoff Pollutants SUSMP Drawings Table and Narrative SWMP Table and Narrative z,t' A. On-site storm drain fZ{ Locations of inlets. .;a Mark all inlets with the words "No ~ Maintain and periodically repaint or inlets Dumping! Flows to Bay" or similar. replace inlet markings . .21 Provide storm water pollution prevention information to new site owners, lessees, or operators. A See applicable operational BMPs in Fact Sheet SC-44, "Drainage System Maintenance," in the CASQA Stormwater Quality Handbooks at www,cabmphandbooks.com _£ Include the following in lease agreements: "Tenant shall not allow anyone to discharge anything to storm drains or to store or deposit materials so as to create a potential discharge to storm drains." Page 1 of9 • j I I I I • • • • l ' I J i I I • • • • I I ll I I I 1:1 B. Interior floor chains 1:1 State that interior floor drains and 1:1 Inspect and maintain drains to and elevator shaft sump elevator shaft sump pumps will be prevent blockages and overflow. pumps plumbed to sanitary sewer. 1:1 C. Interior parking 1:1 State that parking garage floor dr-ains 1:1 Inspect and maintain drains to garages will be plumbed to the sanitary sewer. prevent blockages and overflow. 1:1 D1. Need for future 1:1 Note building design features that 1:1 Provide Integrated Pest Management indoor & structural pest discourage entry of pests. information to owners, lessees, and control operators. la D2. Landscape/ 6 Show locations of native trees or State that final landscape plans will d Maintain landscaping using Outdoor Pesticide Use areas of shrubs and ground cover to accomplish all of the following. minimum or no pesticides. be undisturbed and retained. tK( ~ Show self-retaining landscape pel Preserve existing native trees, shrubs, See applicable operational BMPs in and ground cover to the maximum Fact Sheet SC~41, "Building and areas, if any. extent possible. Grounds Maintenance," in the g/ .a CASQA Stormwater Quality If a PDP, show stormwater Design landscaping to minimize Handbooks at treatment facilities. irrigation and runoff, to promote :IY»'W.~gbmphandbggli;!l.~Qm surface infiltration where appropriate, ¥' Provide IPM information to new and to minimize the use of fertilizers and pesticides that can contribute to owners, lessees and operators. stormwater pollution . .,a Where landscaped areas are used to retain or detain stormwater, specify plants that are tolerant of saturated soil conditions. 6Y Consider using pest~cesistant plants, especially adjacent to hardscape. ~To insure successful establishment, select plants appropriate to site soils, slopes, climate, sun, wind, rain, land use, air movement, ecological consistency, and plant interactions. 1:1 E. Pools, spas, ponds, 1:1 Show location of water feature and 1:1 If the local municipality requires pools 1:1 See applicable operational BMPs in decorative fountains, a sanitary sewer cleanout in an to be plumbed to the sanitary sewer, Fact Sheet SC-72, "Fountain and and other water accessible area within 10 feet. place a note on the plans and state in Pool Maintenance," in the CASQA features. the narrative that this counection will Stormwater Quality Handbooks at be made according to local \vww.cabmph!!ndbooks.com reqnirements. Page 2of9 • I I • • I • a I I I I • • • • • • ll • I I l I I I [J F. Food service [J For restaurants, grocery stores, and [J Describe the location and features of [J other food service operations, show the designated cleaning area. location (indoors or in a covered CJ area outdoors) of a floor sink or Describe the items to be cleaned in other area for cleaning floor mats, this facility and how it has been sized containers, and equipment. to insure that the largest items can be accommodated. [J On the drawing, show a note that this drain will be connected to a grease interceptor before discharging to the sanitary sewer. D G. Refuse areas [J Show where site refuse and 0 State how site refuse will be handled 0 State how the following will be recycled materials will be handled and provide supporting detail to what implemented: and stored for pickup. See city is shown on plans. standard drawing GS-16. Provide adequate number of [J State that signs will be posted on or receptacles. Inspect receptacles If dumpsters or other receptacles near dumpsters with the words "Do regularly; repair or replace leaky [J are outdoors, show how the not dump hazardous materials here" receptacles. Keep receptacles designated area will be covered, or similar. covered. Prohibit/prevent dumping graded, and paved to prevent run-of liquid or hazardous wastes. Post on and show locations of berms to "no hazardous materials" signs. prevent runoff from the area. Inspect and pick up litter daily and clean up spills immediately. Keep Any drains from dumpsters, spill control materials available on- [J compactors, and tallow bin areas site. See Fact Sheet SC-34, "Waste shaD be connected to a grease Handling and Disposal" in the removal device before discharge to CASQA Stormwater Quality sanitary sewer. Handbooks at www.cabmphandbooks.com 0 H. Industrial processes. [J Show process area. [J If industrial processes are to be 0 See Fact Sheet SC-10, ''Non- located on site, state: "AU process Stormwater Discharges" in the activities to be performed indoors. No CASQA Stormwater Quality processes to drain to exterior or to Handbooks at storm drain system." www.cabmphandbooks.com Page 3 of 9 • • I I I I I I I • • I I I • • I I I I I • • I I l I • • • f a a I I a 1. Outdoor storage of a Show any outdoor storage areas, a Include a detailed description of a See the Fact Sheets SC-31, "Outdoor equipment or materials. including how materials will be materials to be stored, storage areas, Liquid Container Storage" and SC- (See rows J and K for covered. Show how areas will be and structural features to prevent 33, "Outdoor Storage of Raw source control graded and bermed to prevent run-pollutants from entering storm drains. Materials " in the CASQA measures for vehicle on or run-off from area. Stormwater Quality Handbooks at cleaning, repair, and Where appropriate, reference '"'~ -~abml!hangbQoks.com maintenance.) a Storage of non-hazardous liquids documentation of compliance with the shall be covered by a roof and/ or requirements of local Hazardous drain to the sanitary sewer system, Materials Programs for: and be contained by berms, dikes, liners, or vaults. • Hazardous Waste Generation a Storage of hazardous materials and • Hazardous Materials Release wastes must be in compliance with Response and Inventory the local hazardous materials ordinance and a Hazardous • California Accidental Release Materials Management Plan for the (CalARP) site. • Aboveground Storage Tank • Uniform Fire Code Article 80 Section 103(b) & (c) 1991 • Underground Storage Tank of9 I I I I I j I I I i l • l • l I • • I I I t I I • • I t I • I. I • • • • l:l .1. Vehicle and l:l Show on drawings as appropriate: l:l If a car wash area is not provided, Describe operational measures to Equipment Cleaning (1) Commercial/industrial facilities describe measures taken to discourage implement the following (if on-site car washing and explain how applicable): having vehicle /equipment these will be enforced. cleaning needs shall either provide l:l Washwater from vehicle and a covered, bermed area for washing equipment washing operations shall activities or discourage not be discharged to the storm drain vehicle/ equipment washing by system. removing hose bibs and installing l:l signs prohibiting such uses. Car dealerships and similar may rinse cars with water only. (2) Multi-dwelling complexes shall have a paved, bermed, and covered l:l See Fact Sheet SC-21, ''Vehicle and car wash area (unless car washing Equipment Cleaning," in the CASQA is prohibited on-site and hoses are Stormwater Quality Handbooks at provided with an automatic shut-·w,vw.cabmnl)andbQoks.com off to discourage such use). (3) Washing areas for cars, vehicles, and equipment shall be paved, designed to prevent run-on to or runoff from the area, and plumbed to drain to the sanitary sewer. (4) Commercial car wash facilities shall be designed such that no runoff from the facility is discharged to the storm drain system. Wastewater from the facility shall discharge to the sanitary sewer, or a wastewater reclamation system shall be installed. Page5of9 I I I I l • I I a I j l I • i • a I I I I l I • • • • • • l j I I [J K. Vehicle/Equipment [J Accommodate aU vehicle [J State that no vehicle repair or In the SUSMP report, note that aU of Repair and equipment repair and maintenance maintenance will be done outdoors, or the following restrictions apply to use Maintenance indoors. Or designate an outdoor else describe the required features of the site: work area and design the area to the outdoor work area. prevent run-on and runoff of [J No person shaD dispose of, nor stormwater. [J State that there are no floor drains or if permit the disposal, directly or there are floor drains, note the agency indirectly of vehicle fluids, hazardous 0 Show secondary containment for from which an industrial waste materials, or rinsewater from parts exterior work areas where motor discharge permit wiD be obtained and cleaning into storm drains. oil, brake fluid, gasoline, diesel that the design meets that agency's fuel, radiator fluid, acid-containing requirements. No vehicle fluid removal shaD be batteries or other hazardous performed outside a building, nor on materials or hazardous wastes are 0 State that there are no tanks, [J asphalt or ground surfaces, whether used or stored. Drains shaD not be containers or sinks to be used for parts inside or outside a building, except installed within the secondary cleaning or rinsing or, if there are, note in such a manner as to ensure that containment areas. the agency from which an industrial any spilled fluid will be in an area of waste discharge permit will be secondary containment. Leaking 0 Add a note on the plans that states obtained and that the design meets vehicle fluids shaD be contained or either (1) there are no floor drains, that agency's requirements. drained from the vehicle or (2) floor drains are connected to immediately. wastewater pretreatment systems prior to discharge to the sanitary No person shaD leave unattended sewer and an industrial waste drip parts or other open containers discharge permit will be obtained. 0 containing vehicle fluid, unless such containers are in use or in an area of secondary containment. Page 6 of 9 • • a t l • I J l I I • • .I I t a • l I i I l l I l I l I I J • • l I • • a L. Fuel Dispensing a Fueling areasl shall have a The property owner shall dry sweep Ate as impermeable floors (i.e., portland the fueling area routinely. cement concrete or equivalent smooth impervious surface) that a See the Business Guide Sheet, are: a) graded at the minimum "Automotive Service-Service slope necessary to prevent ponding; Stations" in the CASQA Stonnwater and b) separated from the rest of Quality Handbooks at the site by a grade break that WVIiw.cabmphandboQks.com prevents run-on of stonnwater to the maximum extent practicable. Fueling areas shall be covered by a a canopy that extends a minimum of ten feet in each direction from each pump. [Alternative: The fueling area must be covered and the cover's minimum dimensions must be equal to or greater than the area within the grade break or fuel dispensing area1.] The canopy [or cover] shall not drain onto the fueling area. 1 The fueling area shall be defined as the area extending a minimum of 6.5 feet from the comer of each fuel dispenser or the length at which the hose and nozzle assembly may be operated plus a minimum of one foot, whichever is greater. Page 7of9 • • • I I I I J I I l • • j I J l I • • i j l j • • a i • • a I a • [J M. Loading Docks [J Show a preliminary design for the [J Move loaded and unloaded items loading dock area, including indoors as soon as possible. roofing and drainage. Loading [J docks shall be covered and/ or See Fact Sheet SC-30, "Outdoor graded to minimize run-on to and Loading and Unloading," in the runoff from the loading area. Roof CASQA Stormwater Quality downspouts shall be positioned to Handbooks at direct stormwater away from the '.Vww.cabmphandbooks.com loading area. Water from loading dock areas should be drained to the sanitary sewer where feasible. Direct connections to storm drains from depressed loading docks are prohibited. [J Loading dock areas draining directly to the sanitary sewer shall be equipped with a spill control valve or equivalent device, which shall be kept closed during periods of operation. [J Provide a roof overhang over the loading area or install door skirts (cowling) at each bay that enclose the end of the trailer. [J N. Fire Sprinkler Test [J Provide a means to drain ftre sprinkler [J See the note in Fact Sheet SC-41, Water test water to the sanitary sewer. "Building and Grounds Maintenance," in the CASQA Stormwater Quality Handbooks at www.cabmuhandhooks.com Page 8 of 9 I I I I I • I I I I a 1 I i l I I I I I I • • l • l • • j l • 0. Miscellaneous Drain D Boiler drain lines shall be direcdy or or Wash Water indirectly connected to the sanitary sewer system and may not discharge D Boiler drain lines to the storm drain system. D Condensate drain lines D Condensate drain lines may discharge to landscaped areas if the flow is small D Rooftop equipment enough that runoff will not occur. Condensate drain lines may not D Drainage sumps discharge to the storm drain system. D Roofing, gutters, and Rooftop mounted equipment with trim. potential to produce pollutants shall D be roofed and/ or have secondary containment. Any drainage sumps on-site shall feature a sediment sump to reduce the D quantity of sediment in pumped water. Avoid roofmg, gutters, and trim made of copper or other unprotected metals D that may leach into runoff. rJf P. Plazas, sidewalks, flf" Plazas, sidewalks, and parking l~ts and parking lots. shall be swept regularly to prevent 5fr~e..+s CLV\.d the accumulation of litter and debris. Debris from pressure washing shall 5:a/e-_w~LKS be collected to prevent entry into the storm drain system. Washwater containing any cleaning agent or degreaser shall be collected and discharged to the sanitary sewer and not discharged to a storm drain. Page9of9 • - ... -• -- - - --.. ""' - ----,. SECTION 2: IDENTIFY POLLUTANTS, BMP SIZING AND SELECTION IE~ ~--------------------------~r Consult with L Geotechnical fflgineer 14 I Redesign I· LIDorBMP 4 ~---------~ tE'; .. 1 4. Size LID and BMP Facilities 1or I Flow Range o1 0.1 Q to 0 ,.,.~ ...... ...... ........ ... ..... / !i. \krity ··,· .. 11•:• <, .... · Draw down Time ·· .... , ·· •.. "-Requirements ...--·/ '·,·., ........... /,/ t ffld ot Decision Matrix FIGURE "-2. Mitigation Criteria and Implementatwn I 38 City of Carlsbad SUSMP -January 14, 2011 L LEGENO: PUBLIC &-PRIVATE S TORI/ DRAINS DIRECTION OF FlOWS SEDIMENT BASIN, SE -2 BIORETENTION AREAS, TC-32 PRESERVED OPEN SPACE -L- SELF-TREA T!NG AREAS (PER 'viOUS-PER 'viO/JS) PROPOSED IMPER'viOUS AREA (ASPHAL T OR CONCRETE} PER'viOUS AREA (LANDSCAPING) STORM DRAIN INLET. STENCIL TREATMENT CONTROL ""fWM'""'"'""' -f0,~'\i fZZ/1 - a· so' 2oo· 100 SCALE; 1" = 200' .. 400' ., BMP ID # BMP TYPE SYMBOL CASQA NO. QUANTITY DRAWING NO. SHEET NO.(S) INSPECTION FREQUENCY MAINTENANCE FREQUENCY CONSTRUCTION SIGN OFF BIORETENTION AREA LOW IMPACT DESIGN - BMP TYPE SYMBOL SETBACKS OF CREEKS, WETLANDS AND RIPARIAN 1:\ '-.1 HABITATS LIMITATION OF DEVELOPMENT ENVELOPE [S""\;j PRESERVATION OF ~¥~~~RAINAGE r;:s:~<;J SOURCE CONTROL BMP TYPE SYMBOL STORM DRAIN SYSTEM SIGN - SITE DESIGN & LANDSCAPE rss:::J PLANNING EFFICIENT IRRIGATION TC-32 CASQA NO. CASQA NO. SD-13 SD-10 SD-12 ©2011 O'Day Consultants, Inc. TENTATIVE MAP 4,5,11,12,15 ROUTINE QUANTITY DRAWING NO. SHEET NO.(S) ACTION HARDLINE PRESERVES WETLANDS & HABITAT GRADING PLAN 3-7 68.58ACRES OF 201.37 ACRE SITE TO REMAIN OPEN SPACE NATURAL DRAINAGE FEATURES IN OPEN SPACE TO REMAN QUANTITY DRAWING NO. SHEET NO.(S) ACTION 18 EA SWMP "N9 DUMPING! FLOWS TO BAY" STENCIL ON ALL CURB INLETS CONSERVING NATURAL AREAS PROVIDE FACT SHEET TO NEW RESI[)ENTS SWMP NO. _____ __ MAINTENANCE AGREEMENT DOCUMENT: YES NO RECORDATION NO. ____ _ PARTY RESPONSIBLE FOR MAINTENANCE: NAME RANCHO COSTERA, LLC CONTACT JOHN BULLER ADDRESS SHAPill HOMES 8383 MLSHIRE BL VO .. STE 700 BEVERLY HILLS. CA 90211 PHONE NO. (323} 988-7511 PLAN PREPARED BY: NAME GEORGE OVA Y COMPANY OVA Y CONSULTANTS, INC. ADDRESS 2710 LOKER A 1£. WEST SUITE 100 CARLSBAD. CA 92DIO PHONE NO. (760} 93/-7700 CERTIFICATION Ret: 32014, EX. 12/31/12 271 0 Loker Avenue West Suite 100 Carlsbad, California 92010 760-931-7700 Fox: 760-931-8680 'II'Ww.odayconsultants.com Civil Engineering Planning Processing Surveying DESIGNED BY: A.M .. J.T. DATE: AUGUST 2011 DRAWN BY: __.J.,..S,_. ___ SCALE: 1" = 200' PROJECT MGR. · G.O. JOB NO.: 10-1307 ENGINEER OF WORK: DATE: GEORGE O'DAY RCE: 32014 I / I I UPDA TEO: APRIL 3l! 2012 UPDATED: DECEMBER 19, 201/ UPDATED: OCTOBER 24, 2011 UPDA TEO: AUGUST 4 2011 • • I • /I / / / ( ~ OA TE OF PR£PARA T!ON.· APRIL 29, 2011 / .• / / / ., " . s• PCC CURB & GUTTER s• PCC CURB & CUTTER MOD. D-25 CURB INLET SEE DETAIL THIS SHEET R/W 10' PROPOSED H.O.A. DRAINAGE EASEMENT AND laO. FOR PUBLIC DRAINAGE PURPOSES 5' 10' A/IN. PONOING 18' SAND/COMPOST MIX 57" GRAI.fl. 4' PERFORATED UNDERDRAIN PIPE OETAIL ~' -UN-L!NEO 8/0RETENT/ON AREA SLOPE NOT 10 SCAJ.£ R 10' '/WPROPOSEO H.O.A. DRAINAGE EASEMENT AND W.O. FOR PUBLIC DRAINAGE PURPOSES 10' MIN. PONDING 18' SAND/COMPOST MIX MIN. GRAI.fl. so• DEPTH, Vz STORAGE* 4• PERFORATED UNOERDRAIN PIPE * Vp STORAGE ACCOMPLISHED WITH INRURATION ARCHES, PERFORATED PIPES, OR AIOOU/AR WATER lilNKS. DETAIL '8' -8/0RETENT/ON AREA FULLY LINED FLOW-THROUGH PLANTER NOT 10 SCAl.£ NOTES FOR BIOR£T£NTION DETAILS: I. BSOY1~/!'01M'H.M'M~"qLRA[jlf,~,'MfM,LL 5[1f."f_jOX POROSITY AND SH4Ll BE VERIREO "<' '""'' ,....,., """ ~""· r'En HOUR INfilTRATION RAT£ 2. SE£ SECTION 4 OF CITY OF CARLSB40 SlilNDARO URB4N STORM WATER MANAGEMENT PLAN (SUSMP) OAT£0 1/14/2011, FOR AOO/T!ONAL BIORETENTION SPECIFICATIONS. J. CONSTRUCT CHECK DAMS AS NEEDED BMP NOTES: 1. THESE BMPS ARE MANDATORY TO BE INSTALLED PER MANUFACTURER'S RECOMMENDATIONS OR THESE PLANS. 2. NO CHANGES TO THE PROPOSED BMPS ON THIS SHEET WITHOUT PRIOR APPROVAL FROM THE CITY ENGINEER. 3. NO SUBSTITUTIONS TO THE MATERIAL OR TYPES OR PLANTING TYPES WITHOUT PRIOR APPROVAL FROM THE CITY ENGINEER. 4. NO OCCUPANCY WILL BE GRANTED UNTIL THE CITY INSPECTION STAFF HAS INSPECTED THIS PROJECT FOR APPROPRIATE BMP CONSTRUCTION AND INSTALLATION. REVIEWED BY: BUILDING INSPECTOR REVIEWED BY: LANDSCAPE INSPECTOR REVIEWED BY: ENGINEERING INSPECTOR DATE DATE DATE ~~~-+--------------------+---~-+--~~ISH1EETI CITY OF CARLSBAD ISH2EETSI ENGINEERING DEPARTMENT ~R=:li.~'P=;£:;;"XH.~10.~1T:;:=::FO.~'N~AIA~ST!.~t.~'R~TEJ~'N==TA~T!.~711~'£=AIA==P.~:===-=====: ROBERTSON RANCH WEST VIllAGE (HANCHO COSTEHA) C.T. /1-01 APPROVED; GLEN K. VAN PESKI SENIOR CIVIL ENGINEER PE 41204 EXP. 3/31/13 DATE REVISION DESCRIPTION DATE INITIAL DATE INITIAL DATE INITIAL ENGINEER OF WORK DTHER APPROVAL DWN BY; CHKD BY; __ _ RVWD BY; CITY APPROVAL PROJECT NO. c. T. 11-01 DRAWING NO. Go \101307 1007A-SVIMP-120430.dwg May 02, 2012 g, 01am , Xrefs: 1007 AMAP; 1 007WMAP; 1007ATP01; 1007asite; l 007wstr; 1 007dsite; 1007bsite [_ ' I I -I' ' ~- ) I ClASGOif 08. SCALE: t• ; 50' ©2011 O'Day Consultants, Inc. i I I_ ' I 1 l II ' ' I _/ STH££1$ t'~ '.11 AND ~r SCAl£: 1" = 50' 2710 ll"iker Avenue West Swite 100 Corlsbod, CollJorn!o 9201 0 760 931" 7700 fmc~ 760-931-8680 www.odayconsultants.com I I I I I Civil Engineering ?!onnlng rrocessing Surveyf;,g \ \ '. \ ' \ NOTE- SEE DETAIL '8'-8/0RETENTION AREA FULLY LINED FlOW-lHROUGH PLANTER, SHEET 1. DETAIL :4' IS FOR FUTVRE REFERENCE, WHERE APPLICABLE . ·-- EDINBURC/1 DN. SCALE: t• = 50' ROBERTSON RANCH WEST VILLAGE (RANCHO COSTERA) MASTER TENTATIVE MAP BMP EXHIBIT IJPOA lEO: APRil JO, 2012 tJf'l)AltO: 1J£CD.IB£R 19, 2011 IJPOAltO: OCTOBER 24, 20!1 IJPOA ltD: AUGUST 2, 2011 /JAlt OF PREI'ARAT!ON: APRil 29, 20!1 I SH2EET I CITY OF CARLSBAD I SHEETS I l----t----11-----------------1----ll----+---+---l ENGINEERING DEPARTMENT 2 ---J----T--------------------------~--,_---r---+----1 1----+ --···· ..... ---.. -------~~----J---+--+-----1---f 8AIP EXHIBIT FOil: 1------J---1----------------+---... ·----ROBERTSON RANCH WEST VIllAGE (IWICHO COSTEHA) DESIGNED BY: _A,M,,__JJ,_ D.~TE: ~---AUGUST 2011 DRAWN BY: J.S. SCALE: 1" = 60' c.r. 11-01 PROJE<-'T MGR.~ _.G,_Q,__ JOB NO.:..J_Q~J:)O.I_. --~ ... --. APPROVED: GLEN K. VAN PESKI t-----r---t------------------------j----+----- ENGINEER OF WORK: SENiOR CIVIL ENGINEER PE 41204 EXP. 3/31/13-DATE DATE INillAL DATE INITIAL OTHER APPROVAL CITY APPROVAL DWN BY: CHKD BY; __ _ RVWD BY: PROJECT NO. c. T. 11-01 DRAWING ~'0-DATE JNillAL ENGINEER OF WORK REVISION DESCRIPTION I I I I I t I • • i J I Project Summary Project Name Rancho Costera Master Tentative Map Project Applicant Shapell Homes Jurisdiction City of Carlsbad Parcel (APN) 208-010-40 Hydrologic Unit Carlsbad Compliance Basin Summary Basin Name: Street 'E'-North of CL Receiving Water: Inlet at Sta. 21 +62 Rainfall Basin Oceanside Mean Annual Precipitation (inches) 13.3 Project Basin Area (acres): 0.59 Watershed Area (acres): 0.59 SCCWRP Lateral Channel Susceptiblity (H, M, L): SCCWRP Vertifical Channel Susceptiblity (H, M, L): Overall Channel Susceptibility (H, M, L): HIGH Lower Flow Threshold(% of 2-Year Flow): 0.1 Drainage Management Area Summary ID Type BMPID Description Area (ac) Pre-Project Cover Post Surface Type Drainage Soil Slope 8846 Drains to Ll D BMP1 North Side of Street -Road & Sidewalk 0.46 Pervious (Pre) Concrete or asphalt Type D (high runoff-clay Steep (greater 1 0%) soi. .. ----r-------------------!-----····-- 8850 Drains to Ll D BMP1 North Side of Street 'E'-Landscaping 0.13 Pervious (Pre) Landscaping Type D (high runoff-clay Steep (greater 10%) soi... LID Facility Summary BMPID Type Description Plan Area (sqft) Volume 1(cft) Volume 2(cft) Orifice Flow (cfs) Orifice Size (inch) BMP1 Bioretention Bioretention Area 1339 1116 803 0.014 0.6 - Select. .. 0.00 0.00 0.00 0.00 0.00 http://uknow.brwncald.com/wastewater/Toolkits/Watershed/SiteToolkit!ReoortResult.asox?oid=l38617&bid=SDC-0001 &sic=nu ... 1/1 /?01 ?. • j I i l I j • I I • l t • • • j l Project Summary Project Name Rancho Costera Master Tentative Map Project Applicant Shapell Homes Jurisdiction City of Carlsbad Parcel (APN) 208-010-40 Hydrologic Unit Carlsbad Compliance Basin Summary Basin Name: Glasgow Drive Receiving Water: End of Temp CDS Rainfall Basin Oceanside Mean Annual Precipitation (inches) 13.3 Project Basin Area (acres): 0.39 Watershed Area (acres): 0.39 SCCWRP Lateral Channel Susceptiblity (H, M, L): SCCWRP Vertifical Channel Susceptiblity (H, M, L): Overall Channel Susceptibility (H, M, L): HIGH Lower Flow Threshold(% of 2-Year Flow): 0.1 Drainage Management Area Summary ID Type BMPID Description Area (ac) Pre-Project Cover Post Surface Type Drainage Soil Slope 9007 Drains to Ll D BMP2 Glasgow Drive-Roadway & Sidewalk 0.33 Pervious (Pre) Concrete or asphalt Type D (high runoff-clay Steep (greater 10%) soL.. ~- 9008 Drains to LID BMP2 Glasgow Drive -Landscaping 0.06 Pervious (Pre) Landscaping Type D (high runoff-clay Steep (greater 10%) soL .. LID Facility Summary BMPID Type Description Plan Area (sqft) Volume 1(cft) Volume 2(cft) Orifice Flow (cfs) Orifice Size (inch) BMP2 Bioretention Glasgow Drive -Bioretention Area 951 793 570 0.009 0.5 http://uknow.brwncald.com/wastewater/Toolkits/Watershed/SiteToolkit/ReoortResult.asox?oid= 138617 &bid=SDC-000 1 &sic=mL :'i/1 /?0 1? i I I i I I i l I • l • I • l • i Project Summary Project Name Rancho Costera Master Tentative Map Project Applicant Shapell Homes Jurisdiction City of Carlsbad Parcel (APN) 208-010-40 Hydrologic Unit Carts bad Compliance Basin Summary Basin Name: Street 'E' -South of CL Receiving Water: Inlet at Sta. 21 +62 Rainfall Basin Oceanside Mean Annual Precipitation (inches) 13.3 Project Basin Area (acres): 0.47 Watershed Area (acres): 0.00 SCCWRP Lateral Channel Susceptiblity (H, M, L): SCCWRP Vertifical Channel Susceptiblity (H, M, L): Overall Channel Susceptibility (H, M, L): HIGH Lower Flow Threshold(% of 2-Year Flow): 0.1 Drainage Management Area Summary ID Type BMPID Description Area (ac) Pre-Project Cover Post Surface Type Drainage Soil Slope 8867 Drains to LID BMP3 South Side of Street 'E' -Roadway & 0.39 Pervious (Pre) Concrete or asphalt Type D (high runoff-clay Steep (greater 10%) Sidewalk soi. .. ---------·· 8868 Drains to Ll D BMP3 South Side of Street 'E' -Landscaping 0.08 Pervious (Pre) Landscaping Type D (high runoff-clay Steep (greater 10%) soi. .. 8870 Drains to Ll D BMP1 0.00 LID Facility Summary BMPID Type Description Plan Area (sqft) Volume 1(cft) Volume 2(cft) Orifice Flow (cfs) Orifice Size (inch) BMP3 Bioretention Bioretention Area -South Side of Street 'E' 1126 939 676 0.011 0.5 http:/ /uknow.brwncald.corn!wastewater/Toolkits/Watershed/SiteToolkit/ReoortResult.asox?oid=l38617 &bid=SDC-0001 &sic=mL. 'i/1 /?0 1? j I • • • I I j i l I I I • • Project Summary Project Name Rancho Costera Master Tentative Map Project Applicant Shapell Homes Jurisdiction City of Ca~sbad Parcel (APN) 208-010-40 Hydrologic Unit Ca~sbad Compliance Basin Summary Basin Name: Edinburgh Drive Receiving Water: End of Temp CDS Rainfall Basin Oceanside Mean Annual Precipitation (inches) 13.3 Project Basin Area (acres): 0.50 Watershed Area (acres): 0.50 SCCWRP Lateral Channel Susceptiblity (H, M, L): SCCWRP Vertifical Channel Susceptiblity (H, M, L): Overall Channel Susceptibility (H, M, L): HIGH Lower Flow Threshold(% of 2-Year Flow): 0.1 Drainage Management Area Summary ID Type BMPID Description Area (ac) Pre-Project Cover Post Surface Type Drainage Soil Slope 9003 Drains to LID BMP4 Edinburgh Drive-Roadway & Sidewalk 0.42 Pervious (Pre) Concrete or asphalt Type D (high runoff-clay Steep (greater 10%) soi ... - 9004 Drains to LID BMP4 Edinburgh Drive -Landscaping 0.08 Pervious (Pre) Landscaping Type D (high runoff-clay Steep (greater 10%) SOl. .. LID Facility Summary BMPID Type Description Plan Area (sqft) Volume 1(cft) Volume 2(cft) Orifice Flow (cfs) Orifice Size (inch) BMP4 Bioretention Edinburgh Drive -Bioretention Area 1211 1010 727 0.012 0.5 http://uknow. brwncald.com/wastewater/Toolkits/Watershed/SiteT oolkit/ReoortResult.asox?oid= 13 8617 &bid=SDC-000 1 &sic=nu... 511 /201 ? I ' I j I • • • I • l I I Project Summary Project Name Rancho Costera Master Tentative Map Project Applicant Shapell Homes Jurisdiction City of Carlsbad Parcel (APN) 208-010-40 Hydrologic Unit Carlsbad Compliance Basin Summary Basin Name: Street 'J' Receiving Water: Inlets at Sta. 25+13 & 25+18 Rainfall Basin Oceanside Mean Annual Precipitation (inches) 13.3 Project Basin Area (acres): 1.10 Watershed Area (acres): 1.10 SCCWRP Lateral Channel Susceptiblity (H, M, L): SCCWRP Vertifical Channel Susceptiblity (H, M, L): Overall Channel Susceptibility (H, M, L): HIGH Lower Flow Threshold(% of 2-Year Flow): 0.1 Drainage Management Area Summary ID Type BMPID Description Area (ac) Pre-Project Cover Post Surface Type Drainage Soil Slope 8889 Drains to LID BMP5 Street 'J' North-Road & Sidewalk 0.45 Pervious (Pre) Concrete or asphalt Type D (high runoff-clay Steep (greater 10%) sci. .. --··--· --------·---·----··· ··--···----·----,_,,_ -·--- 8890 Drains to LID BMP5 Street 'J' North-Landscaping 0.1 Pervious (Pre) Landscaping Type D (high runoff-clay Steep (greater 10%) sci. .. 8891 Drains to LID BMP6 Street 'J' South -Road & Sidewalk 0.45 Pervious (Pre) Concrete or asphalt Type D (high runoff-clay Steep (greater 10%) sci. .. ··---·----~ --~-···--·----~---·---···--·--··-----~-·· ·----·-·---·---····-··--·-··-------·-------···--·--·-·---~-----·---------···--------·-·-·-------------·- 8892 Drains to Ll D BMP6 Street 'J' South-Landscaping 0.1 Pervious (Pre) Landscaping Type D (high runoff-clay Steep (greater 10%) sci. .. LID Facility Summary BMPID Type Description Plan Area (sqft) Volume 1(cft) Volume 2(cft) Orifice Flow (cfs) Orifice Size (inch) BMP 5 Bioretention Street 'J' North -Bioretention Area 1302 1086 781 0.013 0.6 BMP6 Bioretention Street 'J' South-Bioretention Area 1302 1086 781 0.013 0.6 http://uknow.brwncald.com/wastewater/Toolkits/Watershed/SiteToolkit/ReportResult.aspx?pid=l38617&bid=SDC-OOOl&sic=nu ... 5/1/2012 l I I • • I l j • ' l l ' I I Project Summary Protect Name Stroot 'Z'-61oreteot1on on El Cam1no Real ProJect Applicant Shapell Homes JurisdiCtion Coty of Carlsbad Parcel (APN) 20801040 HydrologiC Unit Carlsl>ao Compliance Basin Summary Basin Name: Bason Z1 S t-r·ee..f \ z, Yz. Receiving Waler: EGA lntersectoon RainlaU Basin Oceansode Mean Annual Precipitation (inches) 13.3 Project Basin Area (acres): 1 20 Watershed Area (acres): 0.00 SCCWRP Lateral Channel Suscepliblity (H, M, L): SCCWRP Venilical Channel Susceptiblily (H, M, L): Overall Channel Susceptibility (H, M, L.): HIGH Lower Flow Threshold(% ol 2-Vear Flow): 0.1 Drainage Management Area Summary 10 Type BMPID Oescriplion Area(ac) 8389 Draons to LID BMP7·B Street 0.7 8390 Draons lo LID BMPf'T-£ LS-Parkway 0.2 8392 Draons to LID BMP;'f-8 Pet\loous Pavers on Meoian 0.0 ··--· ----- 8393 Draons lo LID BMf"7~e UD-Booretenloon Area 0.1 LID Facility Summary BMPID Type Description BM~9 B10retentton Boo Retentoon on East Side of ECR I I l I s lv/ t'.-::r Pre-ProJ8CI Cover Pet\loous (Pre) Pet"lloous (Pre) Pet\loous (Pre) ----------·· Pet\loous (Pre) Plan Area (sqll) 4604 I j I I Post Surface Type Concrete or asphalt LancJscapong PeNaous concrete or asphalt LancJscapong l I I Drainage Soil Type D (hogh runotf · clay soi. .. Type D (hogh runotf -clay soi.. Type D (hogh runotf-clay SOl .. TypeD (hogh runotf-clay soi.. Volume l(ctl) Volume 2(ctt) Ortlice Flow (cis) 3635 2762 0.021 I f I Slope Flat -slope (l..ss . Flat -slope (less Flat · slope (less . Flat-slope (less . Oriliee Size (inch) 0.7 hnp://uknow .hrwnca!u.com/waste-warerrfoolkits/Warer-;hed/S itL'Toolkit/Rcnort Re-;1111 a..;m: ')nid= 1 ~Rf\ 17 x. hid-<;; flr nnn • .v .. ;,,_" I I '7 1'1 I /') {) 1 I