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Home My WebLink AboutPD 2023-0006; LA COSTA CANYON HIGH SCHOOL FITNESS CENTER; STORM WATER QUALITY MANAGEMENT PLAN (SWQMP); 2023-08-14E-35 REV 12/22 Development Services Land Development Engineering 1635 Faraday Avenue 442-339-2750 www.carlsbadca.gov STORM WATER QUALITY MANAGEMENT PLAN (SWQMP) TEMPLATE E-35 (FOR PDP PROJECTS ONLY) CITY OF CARLSBAD PRIORITY DEVELOPMENT PROJECT (PDP)STORM WATER QUALITY MANAGEMENT PLAN (SWQMP) FOR LA COSTA CANYON HIGH SCHOOL FITNESS CENTER PD 2023-0006DWG. 542-5A GR 2023-0015 PREPARED FOR: SAN DIEGUITO UNION HIGH SCHOOL DISTRICT 710 ENCINITAS BLVD. ENCINITAS CALIFORNIA 92024 760-753-6491 PREPARED BY: WSP USA 10525 VISTA SORRENTO PARKWAY, SUITE 350 SAN DIEGO, CALIFORNIA 92121 858-500-4500 DATE: JANUARY 27, 2023 ENGINEER OF WORK: MIKE MAGEE, PE SAN DIEGUITO UNION HIGH SCHOOL DISTRICT 710 ENCINITAS BLVD. ENCINITAS CALIFORNIA 92024 760-753-6491 (Revised July 18, 2023 - Resubmittal 1) (Revised August 14, 2023 - Resubmittal 2) . City of Carlsbad TABLE OF CONTENTS Certification Page Project Vicinity Map FORM E-34 Storm Water Standard Questionnaire Site Information FORM E-36 Standard Project Requirement Checklist Summary of PDP Structural BMPs Attachment 1: Backup for PDP Pollutant Control BMPs Attachment 1a: DMA Exhibit Attachment 1b: Tabular Summary of DMAs and Design Capture Volume Calculations Attachment 1c: Harvest and Use Feasibility Screening (when applicable) Attachment 1d: Infiltration Feasibility Analysis (when applicable) Attachment 1e: Pollutant Control BMP Design Worksheets / Calculations Attachment 1f: Trash Capture BMP Requirements Attachment 2: Backup for PDP Hydromodification Control Measures Attachment 2a: Hydromodification Management Exhibit Attachment 2b: Management of Critical Coarse Sediment Yield Areas Attachment 2c: Geomorphic Assessment of Receiving Channels Attachment 2d: Flow Control Facility Design Attachment 3: Structural BMP Maintenance Thresholds and Actions Attachment 4: Single Sheet BMP (SSBMP) Exhibit CERTIFICATION PAGE Project Name:La Costa Canyon High School Fitness CenterProject ID: PD 2023-0006 I hereby declare that I am the Engineer in Responsible Charge of design of storm water BMPs for this project, and that I have exercised responsible charge over the design of the project as defined in Section 6703 of the Business and Professions Code, and that the design is consistent with the requirements of the BMP Design Manual, which is based on the requirements of SDRWQCB Order No. R9-2013-0001 (MS4 Permit) or the current Order. I have read and understand that the City Engineer has adopted minimum requirements for managing urban runoff, including storm water, from land development activities, as described in the BMP Design Manual. I certify that this SWQMP has been completed to the best of my ability and accurately reflects the project being proposed and the applicable source control and site design BMPs proposed to minimize the potentially negative impacts of this project's land development activities on water quality. I understand and acknowledge that the plan check review of this SWQMP by the City Engineer is confined to a review and does not relieve me, as the Engineer in Responsible Charge of design of storm water BMPs for this project, of my responsibilities for project design. ________________________________________________________ Engineer of Work's Signature, PE Number & Expiration Date ________________________________________________________ Print Name ________________________________________________________ Company ____________________________ Date Micheal MaGee WSP 6/2/2023 No. 85660, Exp. 9/30/2022 PROJECT VICINITY MAP Project Site Address: 1 Maverick Way Carlsbad, CA CITY PACIFIC OCEAN VICINITY MAP y Of' Reos SAN OJECT SITE [Insert City’s Storm Water Standard Questionnaire (Form E-34) here] STORM WATER STANDARDS QUESTIONNAIRE E-34 Development Services Land Development Engineering 1635 Faraday Avenue 442-339-2750 www.carlsbadca.gov To address post-development pollutants that may be generated from development projects, the city requires that new development and significant redevelopment priority projects incorporate Permanent Storm Water Best Management Practices (BMPs) into the project design per Carlsbad BMP Design Manual (BMP Manual). To view the BMP Manual, refer to the Engineering Standards (Volume 5). This questionnaire must be completed by the applicant in advance of submitting for a development application (subdivision, discretionary permits and/or construction permits). The results of the questionnaire determine the level of storm water standards that must be applied to a proposed development or redevelopment project. Depending on the outcome, your project will either be subject to ‘STANDARD PROJECT’ requirements, “PRIORITY DEVELOPMENT PROJECT (PDP) requirements or not considered a development project. This questionnaire will also determine if the project is subject to TRASH CAPTURE REQUIREMENTS. Your responses to the questionnaire represent an initial assessment of the proposed project conditions and impacts. City staff has responsibility for making the final assessment after submission of the development application. If staff determines that the questionnaire was incorrectly filled out and is subject to more stringent storm water standards than initially assessed by you, this will result in the return of the development application as incomplete. In this case, please make the changes to the questionnaire and resubmit to the city. If you are unsure about the meaning of a question or need help in determining how to respond to one or more of the questions, please seek assistance from Land Development Engineering staff. A completed and signed questionnaire must be submitted with each development project application. Only one completed and signed questionnaire is required when multiple development applications for the same project are submitted concurrently. PROJECT INFORMATION PROJECT NAME: APN: ADDRESS: The project is (check one): New Development Redevelopment The total proposed disturbed area is: ft2 ( ) acres The total proposed newly created and/or replaced impervious area is: ft2 ( ) acres If your project is covered by an approved SWQMP as part of a larger development project, provide the project ID and the SWQMP # of the larger development project: Project ID SWQMP #: Then, go to Step 1 and follow the instructions. When completed, sign the form at the end and submit this with your application to the city. This Box for City Use Only City Concurrence: YES NO Date: Project ID: By: E-34 Page 1 of 4 REV 08/22 INSTRUCTIONS: La Costa Canyon High School Fitness Center 26,966 0.62 1 Maverick Way Carlsbad, CA 92009 223-322-03-00 39,422 0.91 C cityof Carlsbad □ I O I O I ~ E-34 Page 2 of 4 REV 08/22 STEP 1 TO BE COMPLETED FOR ALL PROJECTS To determine if your project is a “development project”, please answer the following question: YES NO Is your project LIMITED TO routine maintenance activity and/or repair/improvements to an existing building or structure that do not alter the size (See Section 1.3 of the BMP Design Manual for guidance)? If you answered “yes” to the above question, provide justification below then go to Step 6, mark the box stating “my project is not a ‘development project’ and not subject to the requirements of the BMP manual” and complete applicant information. Justification/discussion: (e.g. the project includes only interior remodels within an existing building): If you answered “no” to the above question, the project is a ‘development project’, go to Step 2. STEP 2 TO BE COMPLETED FOR ALL DEVELOPMENT PROJECTS To determine if your project is exempt from PDP requirements pursuant to MS4 Permit Provision E.3.b.(3), please answer the following questions: Is your project LIMITED to one or more of the following: YES NO 1. Constructing new or retrofitting paved sidewalks, bicycle lanes or trails that meet the following criteria: a) Designed and constructed to direct storm water runoff to adjacent vegetated areas, or other non- erodible permeable areas; OR b) Designed and constructed to be hydraulically disconnected from paved streets or roads; OR c) Designed and constructed with permeable pavements or surfaces in accordance with USEPA Green Streets guidance? 2. Retrofitting or redeveloping existing paved alleys, streets, or roads that are designed and constructed in accordance with the USEPA Green Streets guidance? 3. Ground Mounted Solar Array that meets the criteria provided in section 1.4.2 of the BMP manual? If you answered “yes” to one or more of the above questions, provide discussion/justification below, then go to Step 6, mark the second box stating “my project is EXEMPT from PDP …” and complete applicant information. Discussion to justify exemption (e.g. the project redeveloping existing road designed and constructed in accordance with the USEPA Green Street guidance): If you answered “no” to the above questions, your project is not exempt from PDP, go to Step 3. □ ~ □ [if □ [if □ [if E-34 Page 3 of 4 REV 08/22 STEP 3 TO BE COMPLETED FOR ALL NEW OR REDEVELOPMENT PROJECTS To determine if your project is a PDP, please answer the following questions (MS4 Permit Provision E.3.b.(1)): YES NO 1. Is your project a new development that creates 10,000 square feet or more of impervious surfaces collectively over the entire project site? This includes commercial, industrial, residential, mixed-use, and public development projects on public or private land. 2. Is your project a redevelopment project creating and/or replacing 5,000 square feet or more of impervious surface collectively over the entire project site on an existing site of 10,000 square feet or more of impervious surface? This includes commercial, industrial, residential, mixed-use, and public development projects on public or private land. 3. Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more of impervious surface collectively over the entire project site and supports a restaurant? A restaurant is a facility that sells prepared foods and drinks for consumption, including stationary lunch counters and refreshment stands selling prepared foods and drinks for immediate consumption (Standard Industrial Classification (SIC) code 5812). 4. Is your project a new or redevelopment project that creates 5,000 square feet or more of impervious surface collectively over the entire project site and supports a hillside development project? A hillside development project includes development on any natural slope that is twenty-five percent or greater. 5. Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more of impervious surface collectively over the entire project site and supports a parking lot? A parking lot is a land area or facility for the temporary parking or storage of motor vehicles used personally for business or for commerce. 6. Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more of impervious street, road, highway, freeway or driveway surface collectively over the entire project site? A street, road, highway, freeway or driveway is any paved impervious surface used for the transportation of automobiles, trucks, motorcycles, and other vehicles. 7. Is your project a new or redevelopment project that creates and/or replaces 2,500 square feet or more of impervious surface collectively over the entire site, and discharges directly to an Environmentally Sensitive Area (ESA)? “Discharging Directly to” includes flow that is conveyed overland a distance of 200 feet or less from the project to the ESA, or conveyed in a pipe or open channel any distance as an isolated flow from the project to the ESA (i.e. not commingled with flows from adjacent lands).* 8. Is your project a new development or redevelopment project that creates and/or replaces 5,000 square feet or more of impervious surface that supports an automotive repair shop? An automotive repair shop is a facility that is categorized in any one of the following Standard Industrial Classification (SIC) codes: 5013, 5014, 5541, 7532-7534, or 7536-7539. 9. Is your project a new development or redevelopment project that creates and/or replaces 5,000 square feet or more of impervious area that supports a retail gasoline outlet (RGO)? This category includes RGO’s that meet the following criteria: (a) 5,000 square feet or more or (b) a project Average Daily Traffic (ADT) of 100 or more vehicles per day. 10. Is your project a new or redevelopment project that results in the disturbance of one or more acres of land and are expected to generate pollutants post construction? 11. Is your project located within 200 feet of the Pacific Ocean and (1) creates 2,500 square feet or more of impervious surface or (2) increases impervious surface on the property by more than 10%? (CMC 21.203.040) If you answered “yes” to one or more of the above questions, your project is a PDP. If your project is a redevelopment project, go to step 4. If your project is a new project, go to step 5, complete the trash capture question. If you answered “no” to all of the above questions, your project is a ‘STANDARD PROJECT’. Go to step 5, complete the trash capture question. * Environmentally Sensitive Areas include but are not limited to all Clean Water Act Section 303(d) impaired water bodies; areas designated as Areas of Special Biological Significance by the State Water Resources Control Board (Water Quality Control Plan for the San Diego Basin (1994) and amendments); water bodies designated with the RARE beneficial use by the State Water Resources Control Board (Water Quality Control Plan for the San Diego Basin (1994) and amendments); areas designated as preserves or their equivalent under the Multi Species Conservation Program within the Cities and County of San Diego; Habitat Management Plan; and any other equivalent environmentally sensitive areas which have been identified by the City. □ Ill Ill □ □ Ill □ Ill □ ~ □ Ill □ Ill □ Ill □ ~ □ @ □ Ill E-34 Page 4 of 4 REV 08/22 STEP 4 TO BE COMPLETED FOR REDEVELOPMENT PROJECTS THAT ARE PRIORITY DEVELOPMENT PROJECTS (PDP) ONLY Complete the questions below regarding your redevelopment project (MS4 Permit Provision E.3.b.(2)): YES NO Does the redevelopment project result in the creation or replacement of impervious surface in an amount of less than 50% of the surface area of the previously existing development? Complete the percent impervious calculation below: Existing impervious area (A) = sq. ft. Total proposed newly created or replaced impervious area (B) = sq. ft. Percent impervious area created or replaced (B/A)*100 = % If you answered “yes”, the structural BMPs required for PDP apply only to the creation or replacement of impervious surface and not the entire development. Go to step 5, complete the trash capture question. If you answered “no,” the structural BMP’s required for PDP apply to the entire development. Go to step 5, complete the trash capture question. STEP 5 TO BE COMPLETED FOR ALL DEVELOPMENT PROJECTS Complete the question below regarding your Project (SDRWQCB Order No. 2017-0077): YES NO Is the Project within any of the following Priority Land Use (PLU) categories and not exempt from trash capture requirements per section 4.4.2.2 of the BMP Manual? R-23 (15-23 du/ac), R-30 (23-30 du/ac), PI (Planned Industrial), CF (Community Facilities), GC (General Commercial), L (Local Shopping Center), R (Regional Commercial), V-B (Village-Barrio), VC (Visitor Commercial), O (Office), VC/OS (Visitor Commercial/Open Space), PI/O (Planned Industrial/Office), or Public Transportation Station If you answered “yes”, the ‘PROJECT’ is subject to TRASH CAPTURE REQUIREMENTS. Go to step 6, check the first box stating, “My project is subject to TRASH CAPTURE REQUIREMENTS …” and the second or third box as determined in step 3. If you answered “no”, Go to step 6, check the second or third box as determined in step 3. List exemption if applicable for ‘no’ answer here: STEP 6 CHECK THE APPROPRIATE BOX(ES) AND COMPLETE APPLICANT INFORMATION My project is subject to TRASH CAPTURE REQUIREMENTS and must comply with TRASH CAPTURE REQUIREMENTS of the BMP Manual. I understand I must prepare a Storm Water Quality Management Plan (SWQMP). My project is a ‘STANDARD PROJECT’ OR EXEMPT from PDP and must only comply with ‘STANDARD PROJECT’ stormwater requirements of the BMP Manual. I will submit a “Standard Project Requirement Checklist Form E-36”. If my project is subject to TRASH CAPTURE REQUIREMENTS, I will submit a TRASH CAPTURE Storm Water Quality Management Plan (TCSWQMP) per E-35A. My project is a PDP and must comply with PDP stormwater requirements of the BMP Manual. I understand I must prepare a Storm Water Quality Management Plan (SWQMP) per E-35 template for submittal at time of application. Note: For projects that are close to meeting the PDP threshold, staff may require detailed impervious area calculations and exhibits to verify if ‘STANDARD PROJECT’ stormwater requirements apply. My project is NOT a ‘development project’ and is not subject to the requirements of the BMP Manual. Applicant Information and Signature Box Applicant Name: Applicant Title: Applicant Signature: Date: 26,966 project is categorized as P (Public) per City of Carlsbad General Plan Land Use Map Michael MaGee Civil Engineer 02/22/2023 1,303,352 2.06 ~ □ □ ll1 □ □ ~ □ ~ SITE INFORMATION CHECKLIST Project Summary Information Project Name La Costa Canyon High School Fitness Center Project ID Project Address 1 Maverick Way Carlsbad, CA 92009 Assessor's Parcel Number(s) (APN(s)) Project Watershed (Hydrologic Unit) Parcel Area ________ Acres (____________ Square Feet) Existing Impervious Area (subset of Parcel Area) ________ Acres (____________ Square Feet) Area to be disturbed by the project (Project Area) ________ Acres (____________ Square Feet) Project Proposed Impervious Area (subset of Project Area) ________ Acres (____________ Square Feet) Project Proposed Pervious Area (subset of Project Area) ________ Acres (____________ Square Feet) Note: Proposed Impervious Area + Proposed Pervious Area = Area to be Disturbed by the Project. This area includes but is not limited to off-site work including public improvements and temporary disturbance such as vehicle and equipment staging areas, construction worker foot traffic, soil/gravel piles, utility trenches, backfill cuts and slope keyways. 223-322-03-00 57.06 2,485,530 36,370 39,422 26,966 12,456 0.83 0.91 0.62 0.29 Carlsbad 904 Description of Existing Site Condition and Drainage Patterns Current Status of the Site (select all that apply): Existing development Previously graded but not built out Agricultural or other non-impervious use Vacant, undeveloped/natural Description / Additional Information: Existing project site includes the outdoor basketball courts and walkway for La Costa Canyon High School. Existing Land Cover Includes (select all that apply): Vegetative Cover Non-Vegetated Pervious Areas Impervious Areas Description / Additional Information: Underlying Soil belongs to Hydrologic Soil Group (select all that apply): NRCS Type A NRCS Type B NRCS Type C NRCS Type D Approximate Depth to Groundwater (GW): GW Depth < 5 feet 5 feet < GW Depth < 10 feet 10 feet < GW Depth < 20 feet GW Depth > 20 feet Existing Natural Hydrologic Features (select all that apply): Watercourses Seeps Springs Wetlands None Description / Additional Information: ✓ ✓ ✓ ✓ ✓ Description of Existing Site Topography and Drainage [How is storm water runoff conveyed from the site? At a minimum, this description should answer (1) whether existing drainage conveyance is natural or urban; (2) describe existing constructed storm water conveyance systems, if applicable; and (3) is runoff from offsite conveyed through the site? if so, describe]: The project site is part of La Costa Canyon High School and is located at the northwest portion of the campus. The existing drainage conveyance is urban. The existing site is fully impervious, encompassing the outdoor basketball courts and walkway, and gradually slopes from northwest to southeast. Site runoff is captured by onsite inlets and conveyed by the school's underground storm drain system. There is a small portion of the site on the southwest end that do not flow into the onsite storm drain. Flows from these areas drain southwest toward a separate campusstorm drain system No offsite runoff is conveyed through the site. Description of Proposed Site Development and Drainage Patterns Project Description / Proposed Land Use and/or Activities: The project proposes the construction of two buildings serving as fitness centers. In betweenthe two buildings is a new sports court over proposed concrete paving, as well as a syntheticturf field. A planter area is proposed next to the building located east of the site. New asphalt paving is proposed for the walkway. List/describe proposed impervious features of the project (e.g., buildings, roadways, parking lots, courtyards, athletic courts, other impervious features): The proposed impervious features include the two buildings, sports court over concrete paving,and ashpalt walkway. List/describe proposed pervious features of the project (e.g., landscape areas): The proposed pervious features include the syntethic turf field and the planter area. Does the project include grading and changes to site topography? Yes No Description / Additional Information: The project will include grading for the new buildings, sports area and walkway area. The sports area and part of the walkway area will drain to the middle of the site. The rest of the site will continue to slope as it does in existing condition, maintaining the overall site topography. Does the project include changes to site drainage (e.g., installation of new storm water conveyance systems)? Yes No Description / Additional Information: The project will have proposed storm drain pipes to capture the roof drains from the two buildings and runoff from planter area. Perforated pipes will be installed to drain thesynthetic turf field. Catch basins will also be installed in the middle of the site to capture runoff from the sports court. Runoff from the buildings, sports fields, walkway andplanter area will be conveyed and treated via BioClean Modular Wetland System prior to discharging to the school's existing drainage system. A detention vault for hydromodification management will be placed underneath the newbasketball court. ✓ ✓ Identify whether any of the following features, activities, and/or pollutant source areas will be present (select all that apply): On-site storm drain inlets Interior floor drains and elevator shaft sump pumps Interior parking garages Need for future indoor & structural pest control Landscape/Outdoor Pesticide Use Pools, spas, ponds, decorative fountains, and other water features Food service Refuse areas Industrial processes Outdoor storage of equipment or materials Vehicle and Equipment Cleaning Vehicle/Equipment Repair and Maintenance Fuel Dispensing Areas Loading Docks Fire Sprinkler Test Water Miscellaneous Drain or Wash Water Plazas, sidewalks, and parking lots ✓ ✓ ✓ Identification of Receiving Water Pollutants of Concern Describe path of storm water from the project site to the Pacific Ocean (or bay, lagoon, lake or reservoir, as applicable): List any 303(d) impaired water bodies within the path of storm water from the project site to the Pacific Ocean (or bay, lagoon, lake or reservoir, as applicable), identify the pollutant(s)/stressor(s) causing impairment, and identify any TMDLs for the impaired water bodies: 303(d) Impaired Water Body Pollutant(s)/Stressor(s) TMDLs Identification of Project Site Pollutants Identify pollutants anticipated from the project site based on all proposed use(s) of the site (see Table B.6-1 below): Pollutant Not Applicable to the Project Site Anticipated from the Project Site Also a Receiving Water Pollutant of Concern Sediment Nutrients Heavy Metals Organic Compounds Trash & Debris Oxygen Demanding Substances Oil & Grease Bacteria & Viruses Pesticides Flows are captured onsite and conveyed via the school's existing storm drain facility,which discharges to the Encinitas Creek and ultimately to the Batiquitos Lagoon. Thelagoon flows into the Pacific Ocean. Encinitas Creek Benthic Community Effects,Inidicator Bacteria, Nitrogen,Phosphorus, Selenium andToxicity San Marcos Creek Nitrogen, Phosphorus,Selenium and Toxicity Batiquitos Lagoon Toxicity ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ ✓ TABLE Error! No text of specified style in document.-1. Anticipated and Potential Pollutants Generated by Land Use Type General Pollutant Categories Priority Project Categories Sediment Nutrients Heavy Metals Organic Compounds Trash & Debris Oxygen Demanding Substances Oil & Grease Bacteria & Viruses Pesticides Detached Residential Development X X X X X X X Attached Residential Development X X X P(1) P(2) P X Commercial Development >one acre P(1) P(1) X P(2) X P(5) X P(3) P(5) Heavy Industry X X X X X X Automotive Repair Shops X X(4)(5) X X Restaurants X X X X P(1) Hillside Development >5,000 ft2 X X X X X X Parking Lots P(1) P(1) X X P(1) X P(1) Retail Gasoline Outlets X X X X X Streets, Highways & Freeways X P(1) X X(4) X P(5) X X P(1) X = anticipated P = potential (1) A potential pollutant if landscaping exists onsite. (2) A potential pollutant if the project includes uncovered parking areas. (3) A potential pollutant if land use involves food or animal waste products. (4) Including petroleum hydrocarbons. (5) Including solvents. Trash Capture BMP Requirements The project must meet the following Trash Capture BMP Requirements (see Section 4.4 of the BMP Design Manual): 1) The trash capture BMP is sized for a one-year, one-hour storm event or equivalent storm drain system, and 2) the trash capture BMP captures trash equal or greater to 5mm. Description / Discussion of Trash Capture BMPs: Hydromodification Management Requirements Do hydromodification management requirements apply (see Section 1.6 of the BMP Design Manual)? Yes, hydromodification management flow control structural BMPs required. No, the project will discharge runoff directly to existing underground storm drains discharging directly to water storage reservoirs, lakes, enclosed embayments, or the Pacific Ocean. No, the project will discharge runoff directly to conveyance channels whose bed and bank are concrete-lined all the way from the point of discharge to water storage reservoirs, lakes, enclosed embayments, or the Pacific Ocean. No, the project will discharge runoff directly to an area identified as appropriate for an exemption by the WMAA for the watershed in which the project resides. Description / Additional Information (to be provided if a 'No' answer has been selected above): Project is exempt from Trash Capture requirements since it is not within a PLU.Project is categorized as P (Public) per City of Carlsbad General Plan Land Use Map. ✓ Critical Coarse Sediment Yield Areas* *This Section only required if hydromodification management requirements apply Based on the maps provided within the WMAA, do potential critical coarse sediment yield areas exist within the project drainage boundaries? Yes No, no critical coarse sediment yield areas to be protected based on WMAA maps If yes, have any of the optional analyses presented in Appendix H of the manual been performed? H.6.1 Site-Specific GLU Analysis H.7 Downstream Systems Sensitivity to Coarse Sediment H.7.3 Coarse Sediment Source Area Verification No optional analyses performed, the project will avoid critical coarse sediment yield areas identified based on WMAA maps If optional analyses were performed, what is the final result? No critical coarse sediment yield areas to be protected based on verification of GLUs onsite. Critical coarse sediment yield areas exist but additional analysis has determined that protection is not required. Documentation attached in Attachment 8 of the SWQMP. Critical coarse sediment yield areas exist and require protection. The project will implement management measures described in Sections H.2, H.3, and H.4 as applicable, and the areas are identified on the SWQMP Exhibit. Discussion / Additional Information: ✓ Flow Control for Post-Project Runoff* *This Section only required if hydromodification management requirements apply List and describe point(s) of compliance (POCs) for flow control for hydromodification management (see Section 6.3.1). For each POC, provide a POC identification name or number correlating to the project's HMP Exhibit and a receiving channel identification name or number correlating to the project's HMP Exhibit. Has a geomorphic assessment been performed for the receiving channel(s)? No, the low flow threshold is 0.1Q2 (default low flow threshold) Yes, the result is the low flow threshold is 0.1Q2 Yes, the result is the low flow threshold is 0.3Q2 Yes, the result is the low flow threshold is 0.5Q2 If a geomorphic assessment has been performed, provide title, date, and preparer: Discussion / Additional Information: (optional) POC 1 is where the onsite storm drain system connects to the school's existing storm drain system. POC1 is located on the southeastern portion of the site. ✓ Other Site Requirements and Constraints When applicable, list other site requirements or constraints that will influence storm water management design, such as zoning requirements including setbacks and open space, or City codes governing minimum street width, sidewalk construction, allowable pavement types, and drainage requirements. Optional Additional Information or Continuation of Previous Sections As Needed This space provided for additional information or continuation of information from previous sections as needed. The project site is in a school environment where the safety of the students must be considered. Thus, proposed BMPs are limited to underground systems such asmodular wetland systems and underground storage vaults. E-36 Page 1 of 4 Revised 02/22 Development Services Land Development Engineering 1635 Faraday Avenue 442-339-2750 www.carlsbadca.gov STANDARD PROJECT REQUIREMENT CHECKLIST E-36 Project Information Project Name: Project ID: DWG No. or Building Permit No.: Baseline BMPs for Existing and Proposed Site Features Complete the Table 1 - Site Design Requirement to document existing and proposed site features and the BMPs to be implemented for them. All BMPs must be implemented where applicable and feasible. Applicability is generally assumed if a feature exists or is proposed. BMPs must be implemented for site design features where feasible. Leaving the box for a BMP unchecked means it will not be implemented (either partially or fully) either because it is inapplicable or infeasible. Explanations must be provided in the area below. The table provides specific instructions on when explanations are required. Table 1 - Site Design Requirement A. Existing Natural Site Features (see Fact Sheet BL-1) 1. Check the boxes below for each existing feature on the site. 1. Select the BMPs to be implemented for each identified feature. Explain why any BMP not selected is infeasible in the area below. SD-G Conserve natural features SD-H Provide buffers around waterbodies Natural waterbodies Natural storage reservoirs & drainage corridors -- Natural areas, soils, & vegetation (incl. trees) -- B. BMPs for Common Impervious Outdoor Site Features (see Fact Sheet BL-2) 1. Check the boxes below for each proposed feature. 2. Select the BMPs to be implemented for each proposed feature. If neither BMP SD-B nor SD-I is selected for a feature, explain why both BMPs are infeasible in the area below. SD-B Direct runoff to pervious areas SD-I Construct surfaces from permeable materials Minimize size of impervious areas Streets and roads Check this box to confirm that all impervious areas on the site will be minimized where feasible. If this box is not checked, identify the surfaces that cannot be minimized in area below, and explain why it is Sidewalks & walkways Parking areas & lots Driveways Patios, decks, & courtyards Hardcourt recreation areas La Costa Canyon High School Fitness Center X X X X PD 2023-0006 DWG. 542-5A □ □ □ □ □ □ □ □ □ C cityof Carlsbad □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ E-36 Page 2 of 4 Revised 02/22 Other: _______________ infeasible to do so. C. BMPs for Rooftop Areas: Check this box if rooftop areas are proposed and select at least one BMP below. If no BMPs are selected, explain why they are infeasible in the area below. (see Fact Sheet BL-3) SD-B Direct runoff to pervious areas SD-C Install green roofs SD-E Install rain barrels D. BMPs for Landscaped Areas: Check this box if landscaping is proposed and select the BMP below SD-K Sustainable Landscaping If SD-K is not selected, explain why it is infeasible in the area below. (see Fact Sheet BL-4) Provide discussion/justification for site design BMPs that will not be implemented (either partially or fully): Baseline BMPs for Pollutant-generating Sources All development projects must complete Table 2 - Source Control Requirement to identify applicable requirements for documenting pollutant-generating sources/ features and source control BMPs. BMPs must be implemented for source control features where feasible. Leaving the box for a BMP unchecked means it will not be implemented (either partially or fully) either because it is inapplicable or infeasible. Explanations must be provided in the area below. The table provides specific instructions on when explanations are required. Table 2 - Source Control Requirement A. Management of Storm Water Discharges 1. Identify all proposed outdoor work areas below Check here if none are proposed 2. Which BMPs will be used to prevent materials from contacting rainfall or runoff? (See Fact Sheet BL-5) Select all feasible BMPs for each work area 3. Where will runoff from the work area be routed? (See Fact Sheet BL-6) Select one or more option for each work area SC-A Overhead covering SC-B Separation flows from adjacent areas SC-C Wind protection SC-D Sanitary sewer SC-E Containment system Other Trash & Refuse Storage Materials & Equipment Storage ROOFTOP AREA DRAINS TO STRUCTURAL BMP FOR TREATMENT AND FLOW CONTROL. CANNOT DISCHARGE ROOFTOP RUNOFF OVER FACE OF SLOPE TO NEAREST PERVIOUS AREA. NOT ECONOMICALLY FEASIBLE TO CONSTRUCT GREEN ROOF ON FITNESS CENTER. INSUFFICIENT VOLUME FOR RAIN BARREL CAPTURE. X NO LANDSCAPING AREA PROPOSED. EXISING PERVIOUS AREA ADJACENT TO PROJECT SITE CONSISTS OF SUSTAINABLE LANDSCAPING TO REMAIN IN PLACE. X □ □ □ D □ □ □ D D □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ E-36 Page 3 of 4 Revised 02/22 Loading & Unloading Fueling Maintenance & Repair Vehicle & Equipment Cleaning Other: _________________ B. Management of Storm Water Discharges (see Fact Sheet BL-7) Select one option for each feature below: • Storm drain inlets and catch basins … are not proposed will be labeled with stenciling or signage to discourage dumping (SC-F) • Interior work surfaces, floor drains & sumps … are not proposed will not discharge directly or indirectly to the MS4 or receiving waters • Drain lines (e.g. air conditioning, boiler, etc.) … are not proposed will not discharge directly or indirectly to the MS4 or receiving waters • Fire sprinkler test water … are not proposed will not discharge directly or indirectly to the MS4 or receiving waters Provide discussion/justification for source control BMPs that will not be implemented (either partially or fully): X X X X ONLY EDUCATIONAL / FITNESS AREAS PROPOSED OUTDOOR. NO SIGNIFICANT POLLUTION GENERATION ASSOCIATED WITH PROPOSED USE. □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ E-36 Page 4 of 4 Revised 02/22 Form Certification This E-36 Form is intended to comply with applicable requirements of the city’s BMP Design Manual. I certify that it has been completed to the best of my ability and accurately reflects the project being proposed and the applicable BMPs proposed to minimize the potentially negative impacts of this project's land development activities on water quality. I understand and acknowledge that the review of this form by City staff is confined to a review and does not relieve me as the person in charge of overseeing the selection and design of storm water BMPs for this project, of my responsibilities for project design. Preparer Signature: Date: Print preparer name: Mike Magee, PE January 27, 2023~ I [Insert City’s Standard Project Requirement Checklist Form E-36 (here)] SUMMARY OF PDP STRUCTURAL BMPS PDP Structural BMPs All PDPs must implement structural BMPs for storm water pollutant control (see Chapter 5 of the BMP Design Manual). Selection of PDP structural BMPs for storm water pollutant control must be based on the selection process described in Chapter 5. PDPs subject to hydromodification management requirements must also implement structural BMPs for flow control for hydromodification management (see Chapter 6 of the BMP Design Manual). PDP’s subject to trash capture requirements must implement trash capture devices (see Chapter 4 of the BMP Design Manual). Storm water pollutant control, flow control for hydromodification management and trash capture can all be achieved within the same structural BMP(s). PDP structural BMPs must be verified by the City at the completion of construction. This may include requiring the project owner or project owner's representative to certify construction of the structural BMPs (see Section 1.12 of the BMP Design Manual). PDP structural BMPs must be maintained into perpetuity, and the City must confirm the maintenance (see Section 7 of the BMP Design Manual). Use this form to provide narrative description of the general strategy for structural BMP implementation at the project site in the box below. Then complete the PDP structural BMP summary information sheet for each structural BMP within the project (copy the BMP summary information page as many times as needed to provide summary information for each individual structural BMP). Describe the general strategy for structural BMP implementation at the site. This information must describe how the steps for selecting and designing storm water pollutant control BMPs presented in Section 5.1 of the BMP Design Manual were followed, and the results (type of BMPs selected). For projects requiring hydromodification flow control BMPs and trash capture devices, indicate whether pollutant control, trash capture and flow control BMPs are integrated together or separate. [Continue on next page as necessary.] Because the project site is in a school environment, proposed BMPs are limited to underground systems to ensure the safety of students. Additionally, the site isdetermined to be underlain with NRCS Type D soil which restricts infiltration in the site. DMA-P1:A proprietary Biofiltration BMP (i.e. modular wetland system) is proposed as a permanent structural BMP for pollutant control. An underground detention system isplaced downstream of the biofiltration BMP is proposed as a permanent structural BMPfor hydromodication flow control. Not all of the DMA is tributary to the detention system,so a calculation was conducted to check that the 10-year runoff volume flowing in thevault would be equal to or greater than the required detention volume to mitigate the increased runoff volume generated from the entire site. Lastly, the proposed turf field isused for volume reduction to meet the retention requirements. [Continued from previous page – This page is reserved for continuation of description of general strategy for structural BMP implementation at the site.] DMA-P2: Runoff from this DMA does not flow into the onsite storm drain. Since the project replaces the pavement in-kind here, no treatment structure is proposed. Additionally, thearea flowing offsite from this DMA has been reduced in comparison to existingconditions and hydromodification is not implemented. Structural BMP Summary Information [Copy this page as needed to provide information for each individual proposed structural BMP] Structural BMP ID No. DWG _________ Sheet No. __________ Type of structural BMP: Retention by harvest and use (HU-1) Retention by infiltration basin (INF-1) Retention by bioretention (INF-2) Retention by permeable pavement (INF-3) Dry Wells (INF-4) Partial retention by biofiltration with partial retention (PR-1) Biofiltration (BF-1) Proprietary Biofiltration (BF-3) Flow-thru treatment control included as pre-treatment/forebay for an onsite retention or biofiltration BMP (provide BMP type/description and indicate which onsite retention or biofiltration BMP it serves in discussion section below) Detention pond or vault for hydromodification management Trash capture device Other (describe in discussion section below) Purpose: Pollutant control only Hydromodification control only Combined pollutant control and hydromodification control Pre-treatment/forebay for another structural BMP Trash Capture Other (describe in discussion section below) Discussion (as needed): 542-5A 1 4 Proprietary biofiltration BMP treatment system, Modular Wetland System, will beused due to the constraints of the project site being in a school environment. ✓ ✓ Structural BMP Summary Information [Copy this page as needed to provide information for each individual proposed structural BMP] Structural BMP ID No. DWG _________ Sheet No. __________ Type of structural BMP: Retention by harvest and use (HU-1) Retention by infiltration basin (INF-1) Retention by bioretention (INF-2) Retention by permeable pavement (INF-3) Dry Wells (INF-4) Partial retention by biofiltration with partial retention (PR-1) Biofiltration (BF-1) Proprietary Biofiltration (BF-3) Flow-thru treatment control included as pre-treatment/forebay for an onsite retention or biofiltration BMP (provide BMP type/description and indicate which onsite retention or biofiltration BMP it serves in discussion section below) Detention pond or vault for hydromodification management Trash capture device Other (describe in discussion section below) Purpose: Pollutant control only Hydromodification control only Combined pollutant control and hydromodification control Pre-treatment/forebay for another structural BMP Trash Capture Other (describe in discussion section below) Discussion (as needed): 542-5A 2 4 Underground detention vault will be used for hydromodification control due to the constraints of the project site being in a school environment. ✓ ✓ ATTACHMENT 1 BACKUP FOR PDP POLLUTANT CONTROL BMPS This is the cover sheet for Attachment 1. Check which Items are Included behind this cover sheet: Attachment Sequence Contents Checklist Attachment 1a DMA Exhibit (Required) See DMA Exhibit Checklist on the back of this Attachment cover sheet. (24”x36” Exhibit typically required) Included Attachment 1b Tabular Summary of DMAs Showing DMA ID matching DMA Exhibit, DMA Area, and DMA Type (Required)* *Provide table in this Attachment OR on DMA Exhibit in Attachment 1a Included on DMA Exhibit in Attachment 1a Included as Attachment 1b, separate from DMA Exhibit Attachment 1c Form K-7, Harvest and Use Feasibility Screening Checklist (Required unless the entire project will use infiltration BMPs) Refer to Appendix B of the BMP Design Manual to complete Form K-7. Included Not included because the entire project will use infiltration BMPs Attachment 1d Infiltration Feasibility Analysis (Required unless the project will use harvest and use BMPs) Refer to Appendix D of the BMP Design Manual. Included Not included because the entire project will use harvest and use BMPs Attachment 1e Pollutant Control BMP Design Worksheets / Calculations (Required) Refer to Appendices B, E, and I of the BMP Design Manual for structural pollutant control and significant site design BMP design guidelines Included Attachment 1f Trash Capture BMP Design Calculations Refer to Appendices J of the BMP Design Manual for Trash capture BMP design guidelines Included Not included because the entire project is not subject to trash capture requirements ✓ ✓ ✓ ✓ ✓ ✓ ATTACHMENT 1a: Use this checklist to ensure the required information has been included on the DMA Exhibit: The DMA Exhibit must identify: Underlying hydrologic soil group Approximate depth to groundwater Existing natural hydrologic features (watercourses, seeps, springs, wetlands) Critical coarse sediment yield areas to be protected (if present) Existing topography and impervious areas Existing and proposed site drainage network and connections to drainage offsite Proposed grading Proposed impervious features Proposed design features and surface treatments used to minimize imperviousness Drainage management area (DMA) boundaries, DMA ID numbers, and DMA areas (square footage or acreage), and DMA type (i.e., drains to BMP, self-retaining, or self-mitigating) Structural BMPs (identify location and type of BMP) Tabular DMA Summary 1" = 20' feet 402020 0 scale 10 LA COSTA CANYON HIGH SCHOOL FITNESS CENTER DMA-# X.XX SD APN: 2 2 3 3 2 1 2 5 0 0 APN: 2 2 3 3 2 1 2 4 0 0 LOT 2 4 APN: 2 2 3 3 2 1 2 3 0 0 LOT 2 3 APN: 2 2 3 3 2 1 2 2 0 0 LOT 2 2 APN: 2 2 3 3 2 1 2 1 0 0 LOT 2 1 W W W W W W W W W W W W W S D S D S D SD SD SD SD SD SD SD SD SD S D S D S D S D S D S D S D S D S S S S S S S 5 0 4 0 4 0 5 0 4 0 4 0 W SD SD S D S D S D S S S S S S W W W W W W W W W W SD SD SD SD SD SD SD SD S D SD S D S D S D S D SD S D DMA-P2 0.03 DMA-P1 0.78 DMA-P3 0.06 I \ =----I--) I / I / _,-',,"{ 225.3 0 0 • .,. • ••.•• •• • .,. • V V • ,-\C,,-;-,v-, ••v ' ., ' '\ \1 ' ., ., ' .\·, ;;<••::' ::\~\}\•'.: •:••: ::,,:v:: \ . . . . ~-. . . . ~ . • < V • > > V .'\ .• CXJF • ,\ ' 1i " '\ \\;-_ '~-,,_ ,:-:, _, .. \, ,. '>-·· 24 .3 \ \ : \; > \ 18~ X \ (OJDO DElENTI DMA Unique Identifier P1 P1 P2 P3 Area (SF) Area (acres) Pervious Area (SF) 34022 0.78 9404 34022 0.78 9404 1509 0.03 0 2730 0.06 2730 cf (j 0 Worksheet B-1: Tabular Summary of DMAs Pervious Percent HSG Area Weighted DCV Pervious Area Runoff (cubic acres % Coefficient feet 0.22 28% 1YPE D 0.73 122 1 0.22 28% 1YPE D 0.73 NIA 0.00 0% 1YPE D NIA Nii\ 0.06 100% 1YPE D N/A NIA LEGEND I I 111111111111111 Ill Ill II[ BASIN BOUNDARY (DELINEATION WITHIN PROJECT LIMITS) PROPOSED BUILDING FOOTPRINT PROPOSED PER~OUS AREA PROPOSED PROPRIETARY MODULAR WETLAND SYSTEM BIOFILTRATION BMP PROPOSED DETENTION SYSTEM FOR HYDROMODIFICATION PROPOSED STORM DRAIN ALIGNMENT --< < DRAINAGE FLOW PATH DRAINAGE MANAGEMENT AREA (DMA) AREA (ACRES) DMA NOTES 1. 2. 3. 4. 5. THE PROJECT SITE HAS BEEN DETERMINED TO BE UNDERLAIN WITH TYPE D SOIL IN GENERAL ACCORDANCE WITH UNITED STATES DEPARTMENT OF AGRICULTURE SOIL TAXONOMY. GROUNDWATER WAS NOT ENCOUNTERED IN THE SOILS BORINGS ADVANCED TO A DEPTH BETWEEN 10 TO 19.5 FEET DURING THE GEOTECHNICAL INVESTIGATION. SEEPAGE WAS ENCOUNTERED AT DEPTH OF 12 FEET IN THE BORING LOCATED AT THE NORTHEAST CORNER OF THE SITE. NO EXISTING HYDROLOGICAL FEATURES HAVE BEEN DOCUMENTED AT SITE. NO CRITICAL SEDIMENT YIELD AREAS HAVE BEEN DOCUMENTED AT SITE. DEVELOPMENT AREAS SHOULD BE CONSIDERED IMPERVIOUS UNLESS INDICATED OTHERWISE. Treated by BMP BMP Pollutant Total BMP Area Drains to ID(s) Control Type (SF) POC ID(s) 1 Modular Wetland NIA 1 for Hydrorrod Underground NIA NIA Vault N/A NIA NIA NIA NIA Self-rriti N/A NIA TOTAL 38261 0.88 12134 0.28 32% TYPED 0.71 1221 0 1 POC Where: OMA = Drainage Management Area; lrrp = Imperviousness ; HSG = Hydrologic Soi l Group; DCV= Design Volume ; BMP = Best Management Practice; POC = Point of Corrpliance; ID= identifier; No. = Nurrber Capture I SHEET I CITY OF CARLSBAD I SHEETS I 1------+-----+--------------+----+----+>----+---< ENGINEERING DEPARTMENT 1------+-----+--------------+----+----+I-----+---< 1------+-----t--------------+----+----tl-----+-----1 GRADING PLANS FOR: 1------+-----t--------------+----+----tl-----+-----I GR2023-0015 DMA EXHIBIT -PROPOSED CONDITIONS APPROVED: JASON S. GELDERT 1------+-----+~-------------+----+----+>----+---< ENGINEERING MANAGER RCE 63912 EXPIRES 9 30 24 DATE 1---~--+-=---+......_l >--------------+----+----tl-----+-----1 DWN BY: WPR PROJECT NO. DRAWING NO. DATE INITIAL 1---DA_TE~~IN_IT_IA_L +--D_ATE_+-INI_TIA_L--1 CHKD BY: MEM ENGINEER OF WORK REVISION DESCRIPTION OTHER APPROVAL CITY APPROVAL RVWD BY: PD2o23-ooo5 545-5A (9 z -0 ~ (9 STANDARD DETAIL STORMWATER BIOFILTRATION SYSTEM MWS-L-8-8-5'-0"-V SITE SPECIFIC DATA LOW INFLOW PIPE DISCLOSURE: INTERNAL BYPASS DISCLOSURE: PLAN VIEW ELEVATION VIEW RIGHT END VIEW LEFT END VIEW GENERAL NOTES INSTALLATION NOTES PROJECT NUMBER 740120 PROJECT NAME LA COSTA CANYON HIGH SCHOOL FITNESS CENTER PROJECT LOCATION CARLSBAD, CA STRUCTURE ID MWS 1 WETLANDMEDIA BED C/L VERTICAL UNDERDRAJN MANIFOLD VEGETATION---, PLANT ESTABLISHMENT TREATMENT REQUIRED VOLUME BASED (CF) FLOW BASED (CFS) PATENTED PERIMETER VOID AREA MEDIA r-,.';1➔~fj,i7uiF-fd~~rlf:-7:i,~----11111111!!!!11~7-....I..-T N/A 0.171 TREATMENT HGL AVAILABLE {FT) N/K PEAK BYPASS REQUIRED (CFS) -IF APPLICABLE 3.67 PIPE DATA I.E. MATERIAL DIAMETER INLET PIPE 1 219.48 PVC 15" OUTLET PIPE 218.48 PVC 15" PRETREATMENT BIOFILTRA TION DISCHARGE RIM ELEVATION 223.50 223.50 223.50 SURFACE LOAD PEDESTRIAN N/A PEDESTRIAN FRAME & COVER ¢30" OPEN PLANTER ¢24" WETLANDMEDIA VOLUME {CY) 5.07 ORIFICE SIZE {DIA. INCHES) ¢2.01" NOTES: PRELIMINARY NOT FOR CONSTRUCTION. 1. CONTRACTOR TO PROVIDE ALL LABOR, EQUIPMENT, MATERIALS AND INCIDENTALS REQUIRED TO OFFLOAD AND INSTALL THE SYSTEM AND APPURTENANCES IN ACCORDANCE WITH THIS DRAWING AND THE MANUFACTURERS' SPECIFICATIONS, UNLESS OTHERWISE STATED IN MANUFACTURER'S CONTRACT. DRAIN DOWN LINE C/L 221.39 PEAK HGL OUTLET PIPE SEE NOTES 223.50 RIM/FG WEIR ELEV: 220.98 2. UNIT MUST BE INSTALLED ON LEVEL BASE. MANUFACTURER RECOMMENDS A MINIMUM 6" LEVEL ROCK BASE UNLESS SPECIFIED BY THE PROJECT ENGINEER. CONTRACTOR IS RESPONSIBLE FOR VERIFYING PROJECT ENGINEER's RECOMMENDED BASE SPECIFICATIONS. 219.48 4. CONTRACTOR TO SUPPLY AND INSTALL ALL EXTERNAL CONNECTING PIPES. ALL PIPES MUST BE FLUSH WITH INSIDE SURFACE OF CONCRETE {PIPES CANNOT INTRUDE BEYOND FLUSH). INVERT OF OUTFLOW PIPE MUST BE FLUSH WITH DISCHARGE CHAMBER FLOOR. ALL PIPES SHALL BE SEALED WATERTIGHT PER MANUFACTURER'S STANDARD CONNECTION DETAIL. 5. CONTRACTOR RESPONSIBLE FOR INSTALLATION OF ALL PIPES, RISERS, MANHOLES, AND HATCHES. CONTRACTOR TO USE GROUT AND/OR BRICKS TO MATCH COVERS WITH FINISHED SURFACE UNLESS SPECIFIED OTHERWISE. 6. VEGETATION SUPPLIED AND INSTALLED BY OTHERS. ALL UNITS WITH VEGETATION MUST HAVE DRIP OR SPRAY IRRIGATION SUPPLIED AND INSTALLED BY OTHERS. 7. CONTRACTOR RESPONSIBLE FOR CONTACTING BIO CLEAN FOR ACTIVATION OF UNIT. MANUFACTURER'S WARRANTY IS VOID WITHOUT PROPER ACTIVATION BY A BIO CLEAN REPRESENTATIVE. 1. MANUFACTURER TO PROVIDE ALL MATERIALS UNLESS OTHERWISE NOTED. 2. ALL DIMENSIONS, ELEVATIONS, SPECIFICATIONS AND CAPACITIES ARE SUBJECT TO CHANGE. FOR PROJECT SPECIFIC DRAWINGS DETAILING EXACT DIMENSIONS, WEIGHTS AND ACCESSORIES PLEASE CONTACT BIO CLEAN. IE IN THE DESIGN AND CAPACITY OF THE PEAK CONVEYANCE METHOD TO BE REVIEWED AND APPROVED BY THE ENGINEER OF RECORD. HGL(S) AT PEAK FLOW SHALL BE ASSESSED TO ENSURE NO UPSTREAM FLOODING. PEAK HGL AND BYPASS CAPACITY SHOWN ON DRAWING ARE USED FOR GUIDANCE ONLY. IT IS RECOMMENDED THAT A SUFFICIENT VARIATION IN ELEVATION BETWEEN THE INLET AND OUTLET BE PROVIDED TO ALLOW FOR ACCUMULATION OF SEDIMENT IN THE PRE-TREATMENT CHAMBER. FAILURE TO DO SO MAY RESULT IN BLOCKAGE AT INFLOW POINT{S) WHICH MAY CAUSE UPSTREAM FLOODING. PROPRIETARY AND CONFIDENTIAL: THE INFORIJATION CONTAINED IN THIS DOCUMENT IS THE SOLE PROPERTY OF FORTERRA ANO ITS COMPANIES. THIS DOCUMENT, 7l: {:0:%,/fJ; =-~~~,%.::Of' NOR ANY PAHT THEREOF, M4Y BE USED, REPRODUCED OR UOOIRED 7.674.Jlll; =14-11E1A1ED F1JRE1CN PA1ENIS OR IN ANY M4NNER WITH OUT THE WRITTEN CONSENT OF FORTERRA. 01/ER 1111ENIS - c,1~NTECH® ENGINEERED SOLUTIONS LLC www.ConlechES.com a Cit) TREATMENT FLOW (CFS) OPERATING HEAD {FT) PRETREATMENT LOADING RATE {GPM/SF) WETLAND MEDIA LOADING RATE {GPM/SF) 0.171 2.5 1.5 1.0 ATTACHMENT 1b: Us e t h e f o l l o w i n g t a b l e f o r T a b u l a r D M A S u m m a r y Worksheet B-1: Tabular Summary of OMAs ~~ll11l1 1El~•l~i~ I ~g 1100 Impervious Area DCV OMA Unique Area Weighted Treated By (BMP Pollutant Control Drains to Identifier (acres) Area %Imp HSG Runoff (cubic ID) Type (POC fD) (acres) Coefficient feet) t;!ll!il!mli'J1ll•J~4~~mM;11Ern,~1•EmJWlllJg;r\?;r,1~1l)l~~lilimiQ} Total OMA Total Area Total DCV No. ofDMAs Area Impervious %Imp Weighted (cubic Total Area No. of Area Runoff Treated (acres) POCs (acres) (acres) Coefficient feet) Where: OMA= Drainage Management Area; Imp= Imperviousness; HSG = Hydrologic Soil Group; DCV= Design Capture Volume; BMP = Best Management Practice; POC = Point of Compliance; ID = identifier; No. = Number DMA Proposed DMA Unique Identifier Area (SF) Area (acres) Pervious Area (SF) Pervious Area (acres) Percent Pervious (%) HSG Area Weighted Runoff Coefficient DCV (cubic feet) Treated by BMP ID(s) BMP Pollutant Control Type Total BMP Area (SF) Drains to POC ID(s) P1 34022 0.78 9404 0.22 28% TYPE D 0.73 1221 1 Modular N/A 1 P1 34022 0.78 9404 0.22 28% TYPE D 0.73 N/A for Hydromod Underground Vault N/A N/A P2 1509 0.03 0 0.00 0% TYPE D N/A N/A N/A N/A N/A N/A P3 2730 0.06 2730 0.06 100% TYPE D N/A N/A N/A Self-mitigating N/A N/A TOTAL 38261 0.88 12134 0.28 32%TYPE D 0.71 1221 - - 0 1 POC Worksheet B-1: Tabular Summary of DMAs Where: DMA = Drainage Management Area; Imp = Imperviousness; HSG = Hydrologic Soil Group; DCV= Design Capture Volume; BMP = Best Management Practice; POC = Point of Compliance; ID = identifier; No. = Number LA COSTA CANYON HIGH SCHOOL FITNESS CENTER ATTACHMENT 1c: Appendix K: Forms and Checklists K-2 Jan. 2023 Harvest and Use Feasibility Checklist Form K-7 1. Is there a demand for harvested water (check all that apply) at the project site that is reliably present during the wet season? Toilet and urinal flushing Landscape irrigation Other:______________ 2. If there is a demand; estimate the anticipated average wet season demand over a period of 36 hours. Guidance for planning level demand calculations for toilet/urinal flushing and landscape irrigation is provided in Section B.3.2. [Provide a summary of calculations here] 3. Calculate the DCV using worksheet B-2.1. DCV = __________ (cubic feet) 3a. Is the 36 hour demand greater than or equal to the DCV? Yes / No 3b. Is the 36 hour demand greater than 0.25DCV but less than the full DCV? Yes / No 3c. Is the 36 hour demand less than 0.25DCV? Yes Harvest and use appears to be feasible. Conduct more detailed evaluation and sizing calculations to confirm that DCV can be used at an adequate rate to meet drawdown criteria. Harvest and use may be feasible. Conduct more detailed evaluation and sizing calculations to determine feasibility. Harvest and use may only be able to be used for a portion of the site, or (optionally) the storage may need to be upsized to meet long term capture targets while draining in longer than 36 hours. Harvest and use is considered to be infeasible. Is harvest and use feasible based on further evaluation? Yes, refer to Appendix E to select and size harvest and use BMPs. No, select alternate BMPs. Note: 36-hour demand calculations are for feasibility analysis only. Once feasibility analysis is complete the applicant may be allowed to use a different drawdown time provided they meet the 80% annual capture standard (refer to B.4.2) and 96-hour vector control drawdown requirement. Not applicable to the project. Project does not propose habitable structures over 9 stories tall 1t 1t ~ ¢::l ¢:I □ □ □ ATTACHMENT 1d: Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods B-12 Jan. 2023 Table B.2-1: Infiltration Restrictions Restriction Element Is Element Applicable? (Yes/No) Mandatory Considerations BMP is within 100’ of Contaminated Soils BMP is within 100’ of Industrial Activities Lacking Source Control BMP is within 100’ of Well/Groundwater Basin BMP is within 50’ of Septic Tanks/Leach Fields BMP is within 10’ of Structures/Tanks/Walls BMP is within 10’ of Sewer Utilities BMP is within 10’ of Groundwater Table BMP is within Hydric Soils BMP is within Highly Liquefiable Soils and has Connectivity to Structures BMP is within 1.5 Times the Height of Adjacent Steep Slopes (≥25%) City Staff has Assigned “Restricted” Infiltration Category Optional Considerations BMP is within Predominantly Type D Soil BMP is within 10’ of Property Line BMP is within Fill Depths of ≥5’ (Existing or Proposed) BMP is within 10’ of Underground Utilities BMP is within 250’ of Ephemeral Stream Other (Provide detailed geotechnical support) Result Unrestricted. None of the restriction elements above are applicable. Restricted. One or more of the restriction elements above are applicable. No No No No No No No No Yes No No No No No No unlined OK ATTACHMENT 1e: Category # Description i ii iii iv v vi vii viii ix x Units 1 Drainage Basin ID or Name DMA-P1 unitless 2 85th Percentile 24-hr Storm Depth 0.59 inches 3 Impervious Surfaces Not Directed to Dispersion Area (C=0.90) 24,618 sq-ft 4 Semi-Pervious Surfaces Not Serving as Dispersion Area (C=0.30)sq-ft 5 Engineered Pervious Surfaces Not Serving as Dispersion Area (C=0.10)sq-ft 6 Natural Type A Soil Not Serving as Dispersion Area (C=0.10)sq-ft 7 Natural Type B Soil Not Serving as Dispersion Area (C=0.14)sq-ft 8 Natural Type C Soil Not Serving as Dispersion Area (C=0.23)sq-ft 9 Natural Type D Soil Not Serving as Dispersion Area (C=0.30) 9,404 sq-ft 10 Does Tributary Incorporate Dispersion, Tree Wells, and/or Rain Barrels? No No No No No No No No No yes/no 11 Impervious Surfaces Directed to Dispersion Area per SD-B (Ci=0.90) sq-ft 12 Semi-Pervious Surfaces Serving as Dispersion Area per SD-B (Ci=0.30)sq-ft 13 Engineered Pervious Surfaces Serving as Dispersion Area per SD-B (Ci=0.10)sq-ft 14 Natural Type A Soil Serving as Dispersion Area per SD-B (Ci=0.10)sq-ft 15 Natural Type B Soil Serving as Dispersion Area per SD-B (Ci=0.14)sq-ft 16 Natural Type C Soil Serving as Dispersion Area per SD-B (Ci=0.23)sq-ft 17 Natural Type D Soil Serving as Dispersion Area per SD-B (Ci=0.30)sq-ft 18 Number of Tree Wells Proposed per SD-A # 19 Average Mature Tree Canopy Diameter ft 20 Number of Rain Barrels Proposed per SD-E # 21 Average Rain Barrel Size gal 22 Total Tributary Area 34,022 0 0 0 0 0 0 0 0 0 sq-ft 23 Initial Runoff Factor for Standard Drainage Areas 0.73 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 unitless 24 Initial Runoff Factor for Dispersed & Dispersion Areas 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 unitless 25 Initial Weighted Runoff Factor 0.73 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 unitless 26 Initial Design Capture Volume 1,221 0 0 0 0 0 0 0 0 0 cubic-feet 27 Total Impervious Area Dispersed to Pervious Surface 0 0 0 0 0 0 0 0 0 0 sq-ft 28 Total Pervious Dispersion Area 0 0 0 0 0 0 0 0 0 0 sq-ft 29 Ratio of Dispersed Impervious Area to Pervious Dispersion Area n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a ratio 30 Adjustment Factor for Dispersed & Dispersion Areas 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 ratio 31 Runoff Factor After Dispersion Techniques 0.73 n/a n/a n/a n/a n/a n/a n/a n/a n/a unitless 32 Design Capture Volume After Dispersion Techniques 1,221 0 0 0 0 0 0 0 0 0 cubic-feet 33 Total Tree Well Volume Reduction 0 0 0 0 0 0 0 0 0 0 cubic-feet 34 Total Rain Barrel Volume Reduction 0 0 0 0 0 0 0 0 0 0 cubic-feet 35 Final Adjusted Runoff Factor 0.73 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 unitless 36 Final Effective Tributary Area 24,836 0 0 0 0 0 0 0 0 0 sq-ft 37 Initial Design Capture Volume Retained by Site Design Elements 0 0 0 0 0 0 0 0 0 0 cubic-feet 38 Final Design Capture Volume Tributary to BMP 1,221 0 0 0 0 0 0 0 0 0 cubic-feet False False Automated Worksheet B.1: Calculation of Design Capture Volume (V2.0) Dispersion Area, Tree Well & Rain Barrel Inputs (Optional) Standard Drainage Basin Inputs Results Tree & Barrel Adjustments Initial Runoff Factor Calculation Dispersion Area Adjustments No Warning Messages Category # Description i ii iii iv v vi vii viii ix x Units 1 Drainage Basin ID or Name DMA-P1 - - - - - - - - - unitless 2 85th Percentile Rainfall Depth 0.59 - - - - - - - - - inches 3 Predominant NRCS Soil Type Within BMP Location D unitless 4 Is proposed BMP location Restricted or Unrestricted for Infiltration Activities? Restricted unitless 5 Nature of Restriction Soil Type unitless 6 Do Minimum Retention Requirements Apply to this Project? Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes yes/no 7 Are Habitable Structures Greater than 9 Stories Proposed? No yes/no 8 Has Geotechnical Engineer Performed an Infiltration Analysis? No yes/no 9 Design Infiltration Rate Recommended by Geotechnical Engineer in/hr 10 Design Infiltration Rate Used To Determine Retention Requirements 0.000 - - - - - - - - - in/hr 11 Percent of Average Annual Runoff that Must be Retained within DMA 4.5% - - - - - - - - - percentage 12 Fraction of DCV Requiring Retention 0.02 - - - - - - - - - ratio 13 Required Retention Volume 24 - - - - - - - - - cubic-feet False False Automated Worksheet B.2: Retention Requirements (V2.0) Advanced Analysis Basic Analysis Result No Warning Messages Required retention volume: 24 CF Synthetic Turf Area = 8902 sf Gravel storage depth = 1" Retention Volume Provided = 8902 X 1/12 X0.4 = 296 CF * * Category # Description i ii iii iv v vi vii viii ix x Units 1 Drainage Basin ID or Name DMA-P1 - - - - - - - - - sq-ft 2 Design Infiltration Rate Recommended 0.025 - - - - - - - - - in/hr 3 Design Capture Volume Tributary to BMP 1,221 - - - - - - - - - cubic-feet 4 Is BMP Vegetated or Unvegetated? Unvegetated unitless 5 Is BMP Impermeably Lined or Unlined? Unlined unitless 6 Does BMP Have an Underdrain? Underdrain unitless 7 Does BMP Utilize Standard or Specialized Media? Standard unitless 8 Provided Surface Area 8,841 sq-ft 9 Provided Surface Ponding Depth 0 inches 10 Provided Soil Media Thickness 0 inches 11 Provided Gravel Thickness (Total Thickness) 6 inches 12 Underdrain Offset 3 inches 13 Diameter of Underdrain or Hydromod Orifice (Select Smallest) 6.00 inches 14 Specialized Soil Media Filtration Rate in/hr 15 Specialized Soil Media Pore Space for Retention unitless 16 Specialized Soil Media Pore Space for Biofiltration unitless 17 Specialized Gravel Media Pore Space unitless 18 Volume Infiltrated Over 6 Hour Storm 111 0 0 0 0 0 0 0 0 0 cubic-feet 19 Ponding Pore Space Available for Retention 0.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 unitless 20 Soil Media Pore Space Available for Retention 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 unitless 21 Gravel Pore Space Available for Retention (Above Underdrain) 0.00 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 unitless 22 Gravel Pore Space Available for Retention (Below Underdrain) 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 unitless 23 Effective Retention Depth 1.20 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 inches 24 Fraction of DCV Retained (Independent of Drawdown Time) 0.81 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ratio 25 Calculated Retention Storage Drawdown Time 48 0 0 0 0 0 0 0 0 0 hours 26 Efficacy of Retention Processes 0.84 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ratio 27 Volume Retained by BMP (Considering Drawdown Time) 1,032 0 0 0 0 0 0 0 0 0 cubic-feet 28 Design Capture Volume Remaining for Biofiltration 189 0 0 0 0 0 0 0 0 0 cubic-feet 29 Max Hydromod Flow Rate through Underdrain 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 cfs 30 Max Soil Filtration Rate Allowed by Underdrain Orifice 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 in/hr 31 Soil Media Filtration Rate per Specifications 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 in/hr 32 Soil Media Filtration Rate to be used for Sizing 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 in/hr 33 Depth Biofiltered Over 6 Hour Storm 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 inches 34 Ponding Pore Space Available for Biofiltration 1.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 unitless 35 Soil Media Pore Space Available for Biofiltration 0.35 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 unitless 36 Gravel Pore Space Available for Biofiltration (Above Underdrain) 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 unitless 37 Effective Depth of Biofiltration Storage 1.20 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 inches 38 Drawdown Time for Surface Ponding 0 0 0 0 0 0 0 0 0 0 hours 39 Drawdown Time for Effective Biofiltration Depth 48 0 0 0 0 0 0 0 0 0 hours 40 Total Depth Biofiltered 1.20 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 inches 41 Option 1 - Biofilter 1.50 DCV: Target Volume 284 0 0 0 0 0 0 0 0 0 cubic-feet 42 Option 1 - Provided Biofiltration Volume 284 0 0 0 0 0 0 0 0 0 cubic-feet 43 Option 2 - Store 0.75 DCV: Target Volume 142 0 0 0 0 0 0 0 0 0 cubic-feet 44 Option 2 - Provided Storage Volume 142 0 0 0 0 0 0 0 0 0 cubic-feet 45 Portion of Biofiltration Performance Standard Satisfied 1.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ratio 46 Do Site Design Elements and BMPs Satisfy Annual Retention Requirements? Yes - - - - - - - - - yes/no 47 Overall Portion of Performance Standard Satisfied (BMP Efficacy Factor) 1.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ratio 48 Deficit of Effectively Treated Stormwater 0 n/a n/a n/a n/a n/a n/a n/a n/a n/a cubic-feet Biofiltration Calculations False False False -BMPs with underdrains must have a soil media thickness of at least 18 inches. Result False False Attention! Retention Calculations Automated Worksheet B.3: BMP Performance (V2.0) False False BMP Inputs Turf field is being utilized to satisfy retention requirements only. Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods B-36 February 2016 B.6.3 Sizing Flow-Thru Treatment Control BMPs: Use for Sizing Proprietary Biofiltration BMP Flow-thru treatment control BMPs shall be sized to filter or treat the maximum flow rate of runoff produced from a rainfall intensity of 0.2 inch of rainfall per hour, for each hour of every storm event. The required flow-thru treatment rate should be adjusted for the portion of the DCV already retained or biofiltered onsite as described in Worksheet B.6-1. The following hydrologic method shall be used to calculate the flow rate to be filtered or treated: 𝑄 = 𝐶 × 𝑖 × 𝐴 Where: Q = Design flow rate in cubic feet per second C = Runoff factor, area-weighted estimate using Table B.1-1. i = Rainfall intensity of 0.2 in/hr. A = Tributary area (acres) which includes the total area draining to the BMP, including any offsite or onsite areas that comingle with project runoff and drain to the BMP. Refer to Section 3.3.3 for additional guidance. Street projects consult Section 1.4.2. Worksheet B.6-1: Flow-Thru Design Flows Flow-thru Design Flows Worksheet B.6-1 1 DCV DCV cubic-feet 2 DCV retained DCVretained cubic-feet 3 DCV biofiltered DCVbiofiltered cubic-feet 4 DCV requiring flow-thru (Line 1 – Line 2 – 0.67xLine 3) DCVflow-thru cubic-feet 5 Adjustment factor (Line 4 / Line 1)* AF= unitless 6 Design rainfall intensity i= 0.20 in/hr 7 Area tributary to BMP (s) A= acres 8 Area-weighted runoff factor (estimate using Appendix B.2) C= unitless 9 Calculate Flow Rate = AF x (C x i x A) Q= cfs *Adjustment factor shall be estimated considering only retention and biofiltration BMPs located upstream of flow-thru BMPs. That is, if the flow-thru BMP is upstream of the project's retention and biofiltration BMPs then the flow-thru BMP shall be sized using an adjustment factor of 1. BMP-1 0 0 1 0.78 0.73 0.11 Qtreat= 1.5 x 0.11 = 0.17 cfs 1,221 1,221 I I ATTACHMENT 1f: P A L O M A R A I R P O R T R D C A N N O N RD P OIN S E T T IA L N LA COSTA AV C A RL S BAD B L CAMIN O VI D A ROBLE ALGA RD F A R A D A Y AV C A R L S B A D V IL L AG E D R OLIVENHAIN RD C O L L E G E BL E L C A M I N O R E A L RANCHOSANTAFERD TAMARACK AV AVI A R A P Y M E L R O S E D R MARRONRD AVENIDA ENCINAS PASEO D E L N OR TE C O L L E GE BL P OI NSET TIA LN !!! !!! !!! !!! !!! !!! !!! !!! !! ! ! !! !! ! ! ! ! ! ! ! ! ! ! !!! !! ! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! ! ! ! ! !! ! ! ! ! ! ! ! ! ! ! !! !!!!!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!!!!! !!! !!! !!! !!! !!! !!!!!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!!!!! !!! !!! !!! !!! !!! !!!!!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!! !!!!!! !!! !!! !! ! !!! ! !! !!! ! !! !!! !! ! !!! !!! ! !! ! !! !! ! !! ! ! !! !!! !!! !!! ! ! ! !!! !!! !!! !!! !!! !!! !!! !!! !!! !! ! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!! !!! !!! !!! !!! !!! !!! !! ! !! ! !!! !!! !! ! !!! ! ! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! }}}} }} }} }} }} }} }} }} }} }} }} }} }} }}}}}} }} }} }}}}}}}}}} }} }} }} }} }} }} }} }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} }} }} }} }} }} }} }} }} }} }} }} }} }} }}}}}}}}}}}}}}}} }} }} }} }} }} }} }} }} }} }}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}} !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!! !!! !! ! !!!! ! !! ! ! ! ! ! ! ! ! ! ! ! ! !! !! !! ! ! !!!!!!!!!!!!!!!!! !! ! ! ! !!!!!! ! ! ! ! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! ! !! ! !!!!!!!!!!!!!!!!!! ! ! ! ! !! !!! ! ! ! !!! !!!!!! ! ! !!!! ! ! !!!! !! ! ! ! ! ! ! !!!!!!!!!!!!!!!!! ! ! ! !!! ! ! !!! ! ! ! ! ! !! ! !!!!!!!!!!!!!!!!!!!!!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! !!!!! ! !!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!! !!!!! !!! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!! !!!! !!!! ! ! ! ! ! ! ! ! !!!!!!!! ! !!!!!!!! CF L L L L O O O O OS OS P P P P P P P P P P P P P P P R-1.5 R-15 R-15 R-15 R-15 R-23 PI R-8 R-8 VC VC P P R-1.5 GC L/CF R-8 OS R-8 VC VC OS R R-8 R-23 L V-B V-B OS R-4 R-30 VC R-4 R-4 PIPI P PI R-15 R-4 L R-8 R-8 L R R-15 R-4 R-8 R-4 P R-4 R-8R-8 R-8 R-8 VC R-23 R-8 R-8 R-8 R-4 R-4 R-4 R OS P R-1.5 R-4 R-4 R-8 R-4 R-4 R-15 R-4R-8 R-8 R-15 R-23 R R-30 R-8 R-4 R-4 R-8 R-4 R-1.5 R-1.5 R-4 OS R-4 R-4 R-4 OS R-4 R-8 OS OS OS OS OS PI PI OS OS R-4 R-15 P R-8 R-4 R-4 R-4 R-8 P OS PI PI R-23 R-4 R-8 R-8 P R-15 R-4 OS OS OS OS OS R-23PIPI R-4 R-4 OS R-4 R-15 OS OS OS OS OS OS OS R-8 R-4 R-4 R-8 OS OS OS R-15 R-15 OSR-4 VCR-8 P OS PGCO OS R-15 PI/O O PI OS OS OS R-15 PI R-4 OS OS VC/OS OSR-8 R-23 R-4 R-8 R-8 CFOS OS TC OS R-15 R-23 P PI GC PI/O VC OS R-23 R-4L R-23 R-4 PI PI OSPI R-4 OS R-15/L OS R-23R-15 OS P R-1.5 OS OS R-15 OS O R-4 R-8 R-4P O O PGC R-8 R-15 R-15 R-23 VC P R-15/O V-BR-23VC R-15 P OS R-30 VC VC R-4 P OS OS VC R-15R-8 R-15 VCR-8 VC R-23 OS R-15 R-15 VC OS R-8 GC R-4OS R-8 R-8 R-23 R-23 R-8 R-4 R-8 R-8 R-8 R-8 R-4 CF CF R-23CFR-4 R-4 R-4 R-4 R-4 R-4 R-23CF R-15 R-8 CF CF R-4 O R-30 R-15R-4 R-4R-4 P OS OS R-4 R-4 R-23 O PIP PI/O R-4 R-4 VC OS O VC VC VC R VC VC GC O O P OS R-8 R-15 OS VC R-8 PI P OS OS R-4 R-4 R-15 R-8 R-8 R-8 VCR-23 R-8 R-8 R-4 R-1.5R-23 R-15/VC VC GCR-23 R-15R-15 R-8 R-8 R-8 R-8 R-8R-8 R-4 R-4 R-4 R-4 OS R-4 R-8R-8 R-8 R-4 R-8R-4 R-15 R-23 R-23O GC GC VC R-15 R-4 R-4 R-4 R-23 R-15 R-8 R-15 R-8 R-8 R-4 R-4 R-8 R-4 R-1.5 R-4 R-8 R-8 R-8 R-4 R-4 R-4 R-4 R-4 R-15 R-15 R-15R-8 CF R-4 R-15 R-8 R-8 P R-4 R-1.5 R-23 R-8 CF CF R-15 OS O R-23 L R-4R-4 O OCEANSIDE SAN MARC O S ENCINITAS }}78 MCCLELLAN-PALOMARAIRPORT Agua Hedionda Lagoon Buena VistaLagoon CalaveraLake MaerkleReservoir P a c i f i c O c e a n PacificOcean §¨¦5 ÃÅ87 Batiquitos Lagoon Land Use MapGENERAL PLAN General Plan Land Use R-1.5, Residential 0-1.5 du/ac R-4, Residential 0-4 du/ac R-8, Residential 4-8 du/ac R-15, Residential 8-15 du/ac R-15/L, Residential 8-15 du/ac/Local Shopping Center R-15/VC, Residential 8-15 du/ac/Visitor Commercial R-15/O, Residential 8-15 du/ac / Office R-23, Residential 15-23 du/ac R-30, Residential 23-30 du/ac V-B, Village-Barrio L, Local Shopping Center L/CF, Local Shopping Center/Community Facilities GC, General Commercial VC, Visitor Commercial VC/OS, Visitor Commercial/Open Space R, Regional Commercial PI, Planned Industrial PI/O, Planned Industrial/Office O, Office P, Public CF, Community Facilities OS, Open Space TC, Transportation Corridor \\shares\GIS_App\cbgis\products\planning\StandardMap\GPLandUse11x17_Jan2020.mxd 0 3,000Feet Updated August 2021 !!!!!!!!!!Coastal Zone Highway Major Street Planned Street Railroad Lagoon Right of Way City Limits Airport Influence Area }} }} }}Review Area 1 ! ! !! ! !Review Area 2 [ Project Site = - I I I ' \ = ' \ \ \ \ ~ ~ I r..J I I L ,--------, : i L----·· --- -.,. .. ____ _ ........ I ; ,,........._ I .J·------·--! ---. I ------L i f I I i I ! C cityof Carlsbad - - - - - - - --... ... ... - ·~7 --, I ... ~.J ' ! ! I I I i : ATTACHMENT 2 BACKUP FOR PDP HYDROMODIFICATION CONTROL MEASURES [This is the cover sheet for Attachment 2.] Indicate which Items are Included behind this cover sheet: Attachment Sequence Contents Checklist Attachment 2a Hydromodification Management Exhibit (Required) Included See Hydromodification Management Exhibit Checklist on the back of this Attachment cover sheet. Attachment 2b Management of Critical Coarse Sediment Yield Areas (WMAA Exhibit is required, additional analyses are optional) See Section 6.2 of the BMP Design Manual. Exhibit showing project drainage boundaries marked on WMAA Critical Coarse Sediment Yield Area Map (Required) Optional analyses for Critical Coarse Sediment Yield Area Determination Appendix H.6.1 Verification of Geomorphic Landscape Units Onsite Appendix H.7 Downstream Systems Sensitivity to Coarse Sediment Attachment 2c Geomorphic Assessment of Receiving Channels (Optional) See Section 6.3.4 of the BMP Design Manual. Not performed Included Attachment 2d Flow Control Facility Design and Structural BMP Drawdown Calculations (Required) See Chapter 6 and Appendix G of the BMP Design Manual Included ✓ ✓ ✓ ✓ ATTACHMENT 2a: Use this checklist to ensure the required information has been included on the Hydromodification Management Exhibit: The Hydromodification Management Exhibit must identify: Underlying hydrologic soil group Approximate depth to groundwater Existing natural hydrologic features (watercourses, seeps, springs, wetlands) Critical coarse sediment yield areas to be protected (if present) Existing topography Existing and proposed site drainage network and connections to drainage offsite Proposed grading Proposed impervious features Proposed design features and surface treatments used to minimize imperviousness Point(s) of Compliance (POC) for Hydromodification Management Existing and proposed drainage boundary and drainage area to each POC (when necessary, create separate exhibits for pre-development and post-project conditions) Structural BMPs for hydromodification management (identify location, type of BMP, and size/detail) 1" = 20' feet 402020 0 scale 10 LA COSTA CANYON HIGH SCHOOL FITNESS CENTER DMA-# X.XX SD APN: 2 2 3 3 2 1 2 5 0 0 APN: 2 2 3 3 2 1 2 4 0 0 LOT 2 4 APN: 2 2 3 3 2 1 2 3 0 0 LOT 2 3 APN: 2 2 3 3 2 1 2 2 0 0 LOT 2 2 APN: 2 2 3 3 2 1 2 1 0 0 LOT 2 1MAP N O . 9 9 5 8 W W W W W W W W W W W W W S D S D S D SD SD SD SD SD SD SD SD SD S D S D S D S D S D S D S D S D S S S S S S S 5 0 4 0 4 0 5 0 4 0 4 0 W SD SD S D S D S D S S S S S S W W W W W W W W W W SD SD SD SD SD SD SD SD S D SD S D S D S D S D SD S D DMA-P2 0.03 DMA-P1 0.78 DMA-P3 0.06 I \ =----I--) I / I / _,-',,"{ 225.3 0 0 .3 •·\ '/<: ' ·, < ; < , V V , > , ; . ' . ' "', ••• ,, V. ••••v•v •v• ' ' ' , ' , . . • • • \.'· V ' 'V V .V \) • ' ' 4 ' , ' ' ' ' ·)\,, ., • .,. • •· ·, " • .,. ,\\ ..•. a· " ,. ., •· .,. ,. " • t--~''.------i ,_10,,. ' V ' • -,•-:::,_., •• '\ ' •• ' ' ' • \o \\ •. : .• . . • \\ &i DR.AJN • .• • \ • "if . ·• ON TO • · .,. ·, µ.. r:;:,;._,-rnc,., • . ·,t.'. ....,..,,.AJN ·\; . . ¾./4,' '.); . : . . . • . ... . •.• ·.:.~·~·· .. • ... • .. •.•.• .• .• ' ,, V ••, \• •.• 'O ,,. ., ,, V ,. ., ' ''.' _, •.\: __ :\.'_ .·. _, '. ·'.· ,:' \ \ 24 BMP (CUDO DElENllON SYSlE BMP ID BMP 1 BMP2 Self- 189 X Tabular Summa Area (SF) Area (acres) 1612 0.04 2730 0.06 1612 0.04 of BMPs BMP Type Tributary DMA(s) Modular P1 Wetiand Cuba Detention Porti on of System P1 Self-mitigating P3 cf (j 0 HYDROMOD Minimum Provided BMP Maximum Provided BMP Volume (cubic HydroMod HydroMod Volume ft.) Oriffice Diameter 0 riffice Diameter (cubic ft.) (in .) (in .) 3062 3063 0.90 0.90 3062 3062.8 SATISFIED SATISFIED LEGEND I I ~ 111111111111111 I I I I I I i I'. BASIN BOUNDARY (DELINEATION WITHIN PROJECT LIMITS) PROPOSED BUILDING FOOTPRINT PROPOSED PER~OUS AREA PROPOSED PROPRIETARY MODULAR WETLAND SYSTEM BIOFILTRATION BMP PROPOSED DETENTION SYSTEM FOR HYDROMODIFICATION PROPOSED STORM DRAIN ALIGNMENT --< < DRAINAGE FLOW PATH DRAINAGE MANAGEMENT AREA (DMA) AREA (ACRES) HMP NOTES Drawdown 1. 2. 3. 4. 5. Time (hours) 19.7 SATISFIED THE PROJECT SITE HAS BEEN DETERMINED TO BE UNDERLAIN WITH TYPE D SOIL IN GENERAL ACCORDANCE WITH UNITED STATES DEPARTMENT OF AGRICULTURE SOIL TAXONOMY. GROUNDWATER WAS NOT ENCOUNTERED IN THE SOILS BORINGS ADVANCED TO A DEPTH BETWEEN 10 TO 19.5 FEET DURING THE GEOTECHNICAL INVESTIGATION. SEEPAGE WAS ENCOUNTERED AT DEPTH OF 12 FEET IN THE BORING LOCATED AT THE NORTHEAST CORNER OF THE SITE. NO EXISTING HYDROLOGICAL FEATURES HAVE BEEN DOCUMENTED AT SITE. NO CRITICAL SEDIMENT YIELD AREAS HAVE BEEN DOCUMENTED AT SITE. DEVELOPMENT AREAS SHOULD BE CONSIDERED IMPERVIOUS UNLESS INDICATED OTHERWISE. POLUTANT CONTROL Total Design Volume Design Total Capture Volume, Retained by Capture Biofiltration DCV (CF) BMP (CF) Volume, DCV, Volume [Volume Requiring Provided, Retained+ Biofiltration 1.5xDCV (CF) Filtered CF 1,221 0 1,221 1,832 1221 0 1221 1832 I SHEET I CITY OF CARLSBAD I SHEETS I ENGINEERING DEPARTMENT GRADING PLANS FOR: 1------+-----t--------------+----+----tl-----+-----I :=G=R2=0=2=3-=0=0=15=========H=M=P=E=X=Hl=B=IT======~ APPROVED: JASON S. GELDERT t-----+-----+~-------------+----+----+t----+----t ENGINEERING MANAGER RCE 63912 EXPIRES 9 30 24 DATE 1----,~,-+-=---+......,.l ~------------+----+----tf----+-----1 OWN BY: WPR PROJECT NO. DRAWING NO. DATE INITIAL 1---DA_TE~~IN_IT_IA_L +--D_ATE_~INI_TIA_L--1 CHKD BY: MEM ENGINEER OF WORK REVISION DESCRIPTION OTHER APPROVAL CITY APPROVAL RVWD BY: PD2o23-ooo5 545-5A (9 z -0 ~ (9 LA COSTA CANYON HIGH SCHOOL FITNESS CENTER 105 PROVIDE H-20 RATED SOLID SLIP-RESISTANT DIAMOND PLATED LID 4' x 3' BOX MANHOLE 7" WALL THICKNESS FLOWFLOW AA 5/8" EXPANSION TIE ANCHORS @ 9" CENTERS INTO PRECAST WALL BOTH SIDES. 6" SEE BAFFLE WALL DETAIL 6" TOPSOIL RESPREAD PLAN 24" FRAME AND LINE (PER DESIGN) ORIFICE INVERT INVERT (PER DESIGN) FLOW FLOW #5 @ 9" EACH WAY LAP HORIZONTALS WITH EXPANSION TIE ANCHORS TRENCH BACKFILL 6" MIN. GRANULAR BACKFILL INVERT (PER DESIGN)MASTIC SEAL @ JOINT MANHOLE, TYPE A SDRSD D-9 TRENCH BACKFILL 2" CL. SECTION A - A BAFFLE WALL DETAIL 218.40 HWL ELEV. 4" 4" 4" ORIFICE SIZE 0.9" 216.40 IE 3" CL. (MIN.)10" #6 @ 9" EACH WAY SIDE VIEW RIM ELEVATION NOTES: 1. STRUCTURE AND BAFFLE WALL FABRICATED USING PORTLAND CEMENT CONCRETE. 2. BAFFLE WALL PERMANENTLY INSTALLED AS PRECAST OR CAST IN PLACE, (STEEL PLATE ACCEPTABLE IF PERMANENT). 3. PIPE TO STRUCTURE CONNECTIONS SHALL BE ASTM C923. OUTLET CONTROL STRUCTURE 216.40 IE 217.15 IE CUDO UNDER GROUND RETENTION SYSTEM ±50' INLET OUTLET FL O W X X SECTION 3 FINISH GRADE (SAND) STORM MH 223.37 RIM 6" CURB AC PAVEMENT 218.40 IE IN (15" SD) 217.24 IE OUT (15" SD) 15" SD CUDO SYSTEM PER DETAIL 1 SHT 5 FENCE CONCRETE SURFACE 217.15 IE IN (15" SD) 218.48 IE OUT (15" SD) MODULAR WETLAND 223.50 RIM 218.45 IE IN (15" SD) STORM MH 223.37 RIM OUTLET STRUCTURE 223.37 RIM 218.42 IE (15" SD OVER FLOW) 217.24 IE OUT (15" SD)218.40 IE IN (15" SD OVER FLOW) BAFFLE WALL 218.40 TOP 216.40 IE OUT (15" SD) 15" OVERFLOW PIPE@0.5% Q =5.94 CFS 219.48 IE IN (15" SD) 15" SD SECTION 4 BAFFLE WALL 218.40 TOP 223.33 RIM ±52.00 t 1 ±6.00 t ±32. 00 l /~ ~ .. / ~ cc COMPACTED SOIL AS APPROVED AND RECOMMENDED ~---, PLAN VIEW 1 MODULE STACK SCALE: NONE BY PROJECT GEOTECHNICAL ENGINEER. '-.....,"' BACKFILL, 12.00" MINIMUM ABOVE CUDO® SYSTEM, COMPACTED AS REQUIRED BY PROJECT GEOTECHNICAL ENGINEER. BACKFILL MATERIAL PER CUSTOMER BEDDING/BACKFILL SPECIFICATION. 11l24.00" MAINTENANCE/INSPECTION ACCESS COVERS TYPICAL. ----'\ FIELD POURED CONCRETE COLLAR REQUIRED, BY OTHERS. ; TYPICAL CATCH BASIN OR OTHER INLET STRUCTURE PER PLAN. INLET PIPE, 015.oo·: >, CUD0-0008 & CUDO-PIPE-0001. I I SAN D ~ ) \ \ \ \ I I ----- I \ \ \ \ \ \ CU DO-DT-0001 OPTIONAL GEOGRID Bl-AXLE ON GRAVEL OR SAND. (TENSAR™ BX1200 OR EQUIVALENT) 12.00" MAXIMUM BELOW FINISHED GRADE AT SHALLOWEST POINT SEE NOTE 1. ___ 3.00' [36.00"] MINIMUM GEOGRID MATERIAL FROM EDGES OF TANK. 12.00" MAXIMUM. f I 2.00' MINIMUM 5.00' MAXIMUM FOR CONNECTION CONFIGURATION REFERENCE / • WRAP ENTIRE_S_Y_S-TE-M~ WITH >--------------VARIABLE ----------~-, IMPERMEABLE LINER. SEE NOTE 2. SECTION/ CUTAWAY VIEW NOTES: 1. INSTALL GEOGRID LAYER, (TENSAR™ BX1200 OR EQUIVALENT) IN ACCORDANCE WITH MANUFACTURER RECOMMENDATIONS. 2. SYSTEM ENCASED ENTIRELY WITH 36 MIL REINFORCED POLYETHYLENE IMPERMEABLE LINER OR EQUIVALENT AS REQUIRED. 3. FIELD POURED CONCRETE COLLAR REQUIRED AROUND ALL ACCESS COVERS & HATCHES, BY OTHERS. 4. ALL EXTERNAL PIPING & ANGLES BY OTHERS. REFER TO PLANS. 5. CUDO size (24" x 24" x 24"), STORAGE CAPACITY 7.6 CF . 6. 1 STACK WITH 403 CUDO UNITS, PROVIDE 3063 CF OF STORAGE. NOT TO SCALE NOT TO SCALE (9 Detention/ Infiltration SCALE: NONE CUDO® Stormwater Detention System -Typical Installation Detail (9 ~------' NOT TO SCALE 0 O ldcastle® Stormwater Solutions 7921 Southpark Plaza, Suite 200 I Littleton, CO I 80120 I Ph: 800.579.88191 oldcastlestormwater.com -HIS DOCUME~IT IS THE PROPERTY OF OLD:ASTLE PRE CAST, INC. IT IS SUBMITTED FOR REFEREN•:E PURPOSES ONLY AND SHALL NOT SE USED IN ANY WAY INJURIOUS TO TH: INTERESTS OF S.11.ID COMPANY. COPYRIGHT~ 2018 OLDCASTLE ~RECAST, INC. ALL RIGI-TS RESERVED DRAWING NO. ROI ECO EC0-0154 DATE CUDO-DT-0001 C ZHD 2 6 18 JPR 7/21/08 SHEET 1 OF 1 0 L --- __ _j i l 0 NOT TO SCALE (9 "AS BUILT" RCE __ _ EXP, ___ _ DATE REVIE\./ED BY, INSPECTOR DATE I SHEET I CITY OF CARLSBAD I SHEETS I 1-----+--+---------------+---+--1------+-----1 ENGINEERING DEPARTMENT 1-----+--+---------------+---+--f-----+-----1 1-----+--+----------------+----+--t----+----1 GRADING PLANS FOR: l-----+--+----------------+----+--t----+----l ::CG=R=20=2=3=-=00=1=5======DE=T=A=IL=S==========; APPROVED: JASON S. GELDERT 1-----+--+-,,--------------+----+--1------+-----1 ENGINEERING MANAGER RCE 63912 EXPIRES 9 30 24 DATE 1---~,--+~~+-'-"l...__ _____________ +----+--t----+----1 DWN BY: WPR PROJECT NO. DRAWING NO. DATE INITIAL 1---DA_TE_~I_NI_TIA_L-+-_DA_TE_~I_NIT_IA_L-I CHKD BY: MEM ENGINEER OF WORK REVISION DESCRIPTION OTHER APPROVAL CITY APPROVAL RVWD BY: PD2o23-ooo5 545-5A (9 z -0 ~ (9 ATTACHMENT 2b: CARLSBADCARLSBAD ENCINITASENCINITAS ESCONDIDOESCONDIDO OCEANSIDEOCEANSIDE POWAYPOWAY S.D.S.D. COUNTYCOUNTY S.D.S.D. COUNTYCOUNTY S.D.S.D. COUNTYCOUNTY SANSAN DIEGODIEGO SANSAN MARCOSMARCOS VISTAVISTA WINDMILL LAKE GUAJOME LAKE HUBBERT LAKE TURNER LAKE LAKE WOHLFORD CALAVERAS LAKE BUENA VISTA LAGOON DIXON RESERVOIRSQUIRES DAMAQUA HEDIONDA LAGOON BATIQUITOS LAGOON SAN DIEGUITO RESERVOIR RESERVOIR LAKE POWAY SAN DIEGUITO LAGOON LAKE RAMONA LAKE HODGES S a n Dieg uito Riv er San M arcos Cr e e k S a n Marcos Creek E s cond id o C reek Rattlesn a k e Creek B u en a V i s ta Cree k Sa n L uis R e y Riv e r Lusardi Creek E n c i n i t as Cr eek Sa n t a Y sa b e l Creek S a n t a Mar garita River A g u a Hedionda C r e e k S an Luis Rey River Potential Critical Coarse Sediment Yield Areas Exhibit Date: Sept. 8, 2014Carlsbad Watershed - HU 904.00, 211 mi2 Aerial Imagery Source: DigitalGlobe, 06/2012 0 50 100 15025Miles Legend Watershed Boundaries Municipal Boundaries Rivers & Streams Regional WMAA Streams Potential Critical Coarse Sediment Yield Areas NORTH PROJECT SITE Geosyntec C> RICK consultants ENGINEER1No CoMrANY ATTACHMENT 2d: Project Name:Hydrologic Unit: Project Applicant:Rain Gauge: Jurisdiction:Total Project Area: Parcel (APN):Low Flow Threshold: BMP Name:BMP Type: BMP Native Soil Type:BMP Infiltration Rate (in/hr): HMP Sizing Factors Minimum BMP Size DMA Name Area (sf) Pre Project Soil Type Pre-Project Slope Post Project Surface Type Area Weighted Runoff Factor (Table G.2-1)1 Volume Volume (CF) P1 34,022 D Flat Mixed 0.73 0.12 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 BMP Tributary Area 34,022 Minimum BMP Size 2980 Proposed BMP Size*2980 * Assumes standard configuration 3.5 ft 2.0 ft 1531 CF Notes: 1. Runoff factors which are used for hydromodification management flow control (Table G.2-1) are different from the runoff factors used for pollutant control BMP sizing (Table B.1-1). Table references are taken from the San Diego Region Model BMP Design Manual, May 2018. This BMP Sizing Spreadsheet has been updated in conformance with the San Diego Region Model BMP Design Manual, May 2018. For questions or concerns please contact the jurisdiction in which your project is located. Describe the BMP's in sufficient detail in your PDP SWQMP to demonstrate the area, volume, and other criteria can be met within the constraints of the site. BMP's must be adapted and applied to the conditions specific to the development project such as unstable slopes or the lack of available head. Designated Staff have final review and approval authority over the project design. Standard Cistern Depth (Overflow Elevation) Provided Cistern Depth (Overflow Elevation) Minimum Required Cistern Footprint) Areas Draining to BMP City of Carlsbad 223-322-03-00 D BMP Sizing Spreadsheet V3.1 NA Cistern 0.1Q2 36,370 Oceanside 904.00 Carlsbad Hydrologic Unit BMP-2 LCCHS Fitness Center WSP PROPOSED VAULT SIZE MEETS 2980 CF REQUIREMENT VAULT AREA IS 1612 SF WHICH IS EQUIVALENT TO 403 CUDO CELLS. EACH CUDO CELL HOLDS 7.6 CU. FT OF STORMWATER. 403 CUDO CELLS X 7.6 CU. FT = 3062.8 CF WHICH MEETS THE HYDROMOD REQUIREMENT 3 2 2980 0 Project Name:Hydrologic Unit: Project Applicant:Rain Gauge: Jurisdiction:Total Project Area: Parcel (APN):Low Flow Threshold: BMP Name BMP Type: Rain Gauge Unit Runoff Ratio DMA Area (ac) Orifice Flow - %Q2 Orifice Area Soil Type Slope (cfs/ac)(cfs) (in2) P1 Oceanside D Flat 0.571 0.781 0.045 0.87 2.00 0.045 0.87 1.05 Max Orifice Head Max Tot. Allowable Orifice Flow Max Tot. Allowable Orifice Area Max Orifice Diameter (feet) (cfs)(in2)(in) Provide Hand Calc. 0.033 0.64 0.900 Average outflow during surface drawdown Max Orifice Outflow Actual Orifice Area Selected Orifice Diameter (cfs) (cfs)(in2)(in) Drawdown (Hrs)Provide Hand Calculation BMP-2 Pre-developed Condition No Orifice Required for Infiltration Facilities DMA Name 904.00 Carlsbad Hydrologic Unit BMP Sizing Spreadsheet V3.1 City of Carlsbad 223-322-03-00 LCCHS Fitness Center WSP 0.1Q2 36,370 Oceanside Cistern Drawdown time exceeds 96 Hrs. Project must implement a vector control program. Q = Cd*A*(2gH)^0.5 Q = (0.65)*(PI*((0.90/12)^2)/4)*(2*32.2*2.0)^.5 Q = 0.033 cfs Drawdown Time: T = (Vol/Q)/3600 T = (3062/0.033)/3600 T = 25.77 hrs ----....___I _____ _______________ I ATTACHMENT 3 Structural BMP Maintenance Information Use this checklist to ensure the required information has been included in the Structural BMP Maintenance Information Attachment: Preliminary Design/Planning/CEQA level submittal: Attachment 3 must identify: Typical maintenance indicators and actions for proposed structural BMP(s) based on Section 7.7 of the BMP Design Manual Final Design level submittal: Attachment 3 must identify: Specific maintenance indicators and actions for proposed structural BMP(s). This shall be based on Section 7.7 of the BMP Design Manual and enhanced to reflect actual proposed components of the structural BMP(s) How to access the structural BMP(s) to inspect and perform maintenance Features that are provided to facilitate inspection (e.g., observation ports, cleanouts, silt posts, or other features that allow the inspector to view necessary components of the structural BMP and compare to maintenance thresholds) Manufacturer and part number for proprietary parts of structural BMP(s) when applicable Maintenance thresholds for BMPs subject to siltation or heavy trash(e.g., silt level posts or other markings shall be included in all BMP components that will trap and store sediment, trash, and/or debris, so that the inspector may determine how full the BMP is, and the maintenance personnel may determine where the bottom of the BMP is . If required, posts or other markings shall be indicated and described on structural BMP plans.) Recommended equipment to perform maintenance When applicable, necessary special training or certification requirements for inspection and maintenance personnel such as confined space entry or hazardous waste management ENGINEERED SOLUTIONS Modular Wetlands® Linear Operation & Maintenance Manual _i__ MODULAR WETLANDS 2 Maintenance Summary •Remove Trash from Screening Device – average maintenance interval is 6 to 12 months. ◦(5 minute average service time ). •Remove Sediment from Separation Chamber – average maintenance interval is 12 to 24 months. ◦(10 minute average service time ). •Replace Cartridge Filter Media – average maintenance interval 12 to 24 months. ◦(10-15 minute per cartridge average service time ). •Replace Drain Down Filter Media – average maintenance interval is 12 to 24 months. ◦(5 minute average service time ). •Trim Vegetation – average maintenance interval is 6 to 12 months. ◦(Service time varies). System Diagram Inflow Pipe (optional) Chamber Access to screening device, separation chamber and cartridge filter Biofil tration Chamber Discharge Chamber Access to drain down filter 3 Maintenance Procedures Screening Device 1. Remove grate or manhole cover to gain access to the screening device in the Pre- Treatment Chamber. Vault type units do not have screening device. Maintenance can be performed without entry. 2. Remove all pollutants collected by the screening device. Removal can be done manually or with the use of a vacuum truck. 3. Screening device can easily be removed from the Pre-Treatment Chamber to gain access to separation chamber and media filters below. Replace grate or manhole cover when completed. Separation Chamber 1. Perform maintenance procedures of screening device listed above before maintaining the separation chamber. 2. With a pressure washer, spray down pollutants accumulated on walls and cartridge filters. 3. Vacuum out Separation Chamber and remove all accumulated pollutants. Replace screening device, grate or manhole cover when completed. Cartridge Filters 1. Perform maintenance procedures on screening device and separation chamber before maintaining cartridge filters. 2. Enter separation chamber. 3. Unscrew the two bolts holding the lid on each cartridge filter and remove lid. 4. Remove each of 4 to 8 media cages holding the media in place. 5. Spray down the cartridge filter to remove any accumulated pollutants. 6. Vacuum out old media and accumulated pollutants. 7. Reinstall media cages and fill with new media from manufacturer or outside supplier. Manufacturer will provide specification of media and sources to purchase. 8. Replace the lid and tighten down bolts. Replace screening device, grate or manhole cover when completed. Drain Down Filter 1. Remove hatch or manhole cover over discharge chamber and enter chamber. Entry into chambers may require confined space training based on state and local regulations. 2. Unlock and lift drain down filter housing and remove old media block. Replace with new media block. Lower drain down filter housing and lock into place. 3. Exit chamber and replace hatch or manhole cover. 4 Maintenance Notes 1. Following maintenance and/or inspection, it is recommended the maintenance operator prepare a maintenance/ inspection record. The record should include any maintenance activities performed, amount and description of debris collected, and condition of the system and its various filter mechanisms. 2. The owner should keep maintenance/inspection record(s) for a minimum of five years from the date of maintenance. These records should be made available to the governing municipality for inspection upon request at any time. 3. Transport all debris, trash, organics and sediments to approved facility for disposal in accordance with local and state requirements. 4. Entry into chambers may require confined space training based on state and local regulations. 5. No fertilizer shall be used in the Biofiltration Chamber. 6. Irrigation should be provided as recommended by manufacturer and/or landscape architect. Amount of irrigation required is dependent on plant species. Some plants may require irrigation. Maintenance Procedure Illustration Screening Device The screening device is located directly under the manhole or grate over the Pre-Treatment Chamber. It’s mounted directly underneath for easy access and cleaning. Device can be cleaned by hand or with a vacuum truck. Separation Chamber The separation chamber is located directly beneath the screening device. It can be quickly cleaned using a vacuum truck or by hand. A pressure washer is useful to assist in the cleaning process. 5 Cartridge Filters The cartridge filters are located in the Pre-Treatment chamber connected to the wall adjacent to the biofiltration chamber. The cartridges have removable tops to access the individual media filters. Once the cartridge is open media can be easily removed and replaced by hand or a vacuum truck. Drain Down Filter The drain down filter is located in the Discharge Chamber. The drain filter unlocks from the wall mount and hinges up. Remove filter block and replace with new block. Trim Vegetation Vegetation should be maintained in the same manner as surrounding vegetation and trimmed as needed. No fertilizer shall be used on the plants. Irrigation per the recommendation of the manufacturer and or landscape architect. Different types of vegetation requires different amounts of irrigation. 6 For Office Use Only (city) (Zip Code)(Reviewed By) Owner / Management Company (Date) Contact Phone ( )_ Inspector Name Date / /Time AM / PM Weather Condition Additional Notes Yes Depth: Yes No Modular Wetland System Type (Curb, Grate or UG Vault):Size (22', 14' or etc.): Other Inspection Items: Storm Event in Last 72-hours? No YesType of Inspection Routine Follow Up Complaint Storm Office personnel to complete section to the left. Inspection Report Modular Wetlands Linear Is the filter insert (if applicable) at capacity and/or is there an accumulation of debris/trash on the shelf system? Does the cartridge filter media need replacement in pre-treatment chamber and/or discharge chamber? Any signs of improper functioning in the discharge chamber? Note issues in comments section. Chamber: Is the inlet/outlet pipe or drain down pipe damaged or otherwise not functioning properly? Structural Integrity: Working Condition: Is there evidence of illicit discharge or excessive oil, grease, or other automobile fluids entering and clogging the unit? Is there standing water in inappropriate areas after a dry period? Damage to pre-treatment access cover (manhole cover/grate) or cannot be opened using normal lifting pressure? Damage to discharge chamber access cover (manhole cover/grate) or cannot be opened using normal lifting pressure? Does the MWS unit show signs of structural deterioration (cracks in the wall, damage to frame)? Project Name Project Address Inspection Checklist CommentsNo Does the depth of sediment/trash/debris suggest a blockage of the inflow pipe, bypass or cartridge filter? If yes, specify which one in the comments section. Note depth of accumulation in in pre-treatment chamber. Is there a septic or foul odor coming from inside the system? Is there an accumulation of sediment/trash/debris in the wetland media (if applicable)? Is it evident that the plants are alive and healthy (if applicable)? Please note Plant Information below. Sediment / Silt / Clay Trash / Bags / Bottles Green Waste / Leaves / Foliage Waste:Plant Information No Cleaning Needed Recommended Maintenance Additional Notes: Damage to Plants Plant Replacement Plant Trimming Schedule Maintenance as Planned Needs Immediate Maintenance ENGINEERED SOLUTIONS ---- □ □ □ □ □ □ I 7 For Office Use Only (city) (Zip Code)(Reviewed By) Owner / Management Company (Date) Contact Phone ( )_ Inspector Name Date / /Time AM / PM Weather Condition Additional Notes Site Map # Comments: Inlet and Outlet Pipe Condition Drain Down Pipe Condition Discharge Chamber Condition Drain Down Media Condition Plant Condition Media Filter Condition Long: MWS Sedimentation Basin Total Debris Accumulation Condition of Media 25/50/75/100 (will be changed@ 75%) Operational Per Manufactures' Specifications (If not, why?) Lat:MWS Catch Basins GPS Coordinates of Insert Manufacturer / Description / Sizing Trash Accumulation Foliage Accumulation Sediment Accumulation Type of Inspection Routine Follow Up Complaint Storm Storm Event in Last 72-hours? No Yes Office personnel to complete section to the left. Project Address Project Name Cleaning and Maintenance Report Modular Wetlands LinearENGINEERED SOLUTIONS □ □ □ □ □ □ CUDO® CUBES Operations and Maintenance Manual (Underground Retention/Detention/Infiltration/Water Reuse Systems) 0 Oldcastle lnfrast~~S!~!'.( ()water Description / Basic Function CUDO is a modular stormwater system comprised of a grouping of modular polypropylene or concrete cubes that when constructed form an underground storage area for stormwater. This system can be used for infiltration, retention, detention or water reuse. CUDO can help achieve runoff detainment and storage to help attenuate the peak flow to pre-construction levels and can help conform to current Low Impact Development requirements. Infiltration The purpose of a CUDO infiltration system is to capture stormwater runoff, store the runoff, and thenallow it to percolate into the ground via the open space area of the cubes and perforations in the side wall. The system is backfilled with a Class I material defined by ASTM D2321 as a cleaned open graded rock or a Class II permeable sand. The rock or sand provide additional storage capacity but also allow for a percolation interface with the native material. The ground water is “recharged” with this type of system. Detention The purpose of a CUDO detention system is to capture stormwater runoff, store the runoff, and then allow it to be released at a controlled rate through an appropriately sized orifice control. A detention system helps attenuate the peak flow from the site assuring that pre-development runoff flows are not exceeded as a result of the development. A CUDO detention requires the cubes to be encapsulated with an impermeable liner for the polypropylene system or the seams of the concrete system to be sealed with a water proof mastic. Retention A CUDO retention system is a hybrid system. It is a combination of a detention system and an infiltration system. A retention system is utilized to attenuate peak flow as well as promote groundwater re-charge. A retention system is outfitted with an overflow pipe at the top of the system which allows the system to fill for infiltration but also outlet if the ground is saturated. Water Reuse The purpose of a water-reuse CUDO system is to capture and store water for future use. The system is constructed in a similar fashion to a detention system but instead of a controlled outlet the system is constructed with an emergency overflow. A water reuse system is a Low-Impact Development (LID) device that helps attenuate peak flows as well as conserve water. Water may be reused through an active pump system or passive irrigation. Inspection/Cleanout Ports Inspection and cleanout ports are 18-inch diameter vertical risers connected to the uppermost polypropylene CUDO cubes or up to 30-inch manhole access connected to the concrete CUDO. They are used for entrance into the system, or for access to place vacuum truck hoses or water-jetting devices or CCTV equipment. Ports are strategically located near inlet and outlet pipes and in other areas or probable deposition in the system. It is recommended to keep surface level access lids sealed and bolted at all times when the system is in service. Inlet Bay Some systems are configured so that pretreatment of the stormwater occurs within the CUDO system. In this case, the CUDO system will house an inlet bay. The inlet bay is separated from the rest of the CUDO system by sidewall plugs and is intended to separate gross pollutants, trash and debris and floatables from the CUDO system and pre- treatment device. The bay contains its own sump area and unique access ports. CUDO® Stormwater Cube - Modular Stormwater Systems Maintenance Overview for CUDO State and Local regulations require that stormwater storage systems be maintained and serviced on a recurring basis. The purpose of maintaining a clean and obstruction free CUDO system is to ensure the system performs the intended function of the primary design. Trash and debris, floatables, gross pollutants and sediment can build up in the CUDO leading to clogging of the native soil interface or blockage of the inlet or outlet pipes. This can cause the system to function improperly by limiting storage volume, limiting the design percolation rates or impeding flow in and out of the system. Downstream and upstream, areas could run the risk of flooding and deleterious environmental impact. Recommended Frequency of Service It is recommended that the CUDO stormwater systems be serviced on a regularly occurring basis. Ultimately the frequency depends on the amount of runoff, pollutant loading, and interference from trash, debris and gross pollutants as well as proper maintenance of upstream pretreatment devices. However, it is recommended that each installation be inspected at least two times per year to assess service needs. Recommended Timing of Service Guidelines for the timing of service are as follows: 1.For areas with a definite rainy season the system should be serviced prior to and following the rainy season. 2.For areas subject to year-round rainfall service should occur on a regularly occurring basis. (A minimum of two times per year.) 3.For areas with winter snow and summer rain the system should be serviced prior to and after the snow season. 4.For installed devices that are subject to dry weather flows only (i.e. wash racks, parking garages, etc…) the unit should be serviced on a regularly occurring basis. (A minimum of two times per year.) Inspection An inspection should be performed when the system is new. This allows the owner to establish a baseline condition for comparison to future inspections. Sediment build up can typically be monitored without entering the system. (No confined space entry.) Initial and subsequent inspection data should be recorded and filed for reference. Some regulatory agencies require that the results of the inspections be documented and reported. Inspection reports should comply with regulatory requirements and be submitted as required. Inspection Procedures 5.Locate the inspection, cleanout and access ports. Inspection and cleanout ports are typically 18-inch diameter. Access ports are typically 24-inch or 30-inch diameter. Pictures should be taken to document the location or a site map should be generated to detail the as-built locations of the ports. 6.Unbolt and remove the access port lids. 7.Insert a measuring device into the opening making note of a point of reference to determine the quantity of sediment and other accumulated material. If access is required to measure, ensure only certified confined space entry personnel having appropriate equipment are allowed to enter the system. 8.In addition, for accessible concrete CUDO systems personnel should utilize appropriate confined space entry procedures to enter the system and photograph its condition. 9.Inspect inlet and outlet locations for obstructions. Obstructions should be removed at this time. 10.Inspect the structural components of the system. 11.Fill in the CUDO Inspection/Maintenance Data Sheet and send a copy to the regulatory agency if necessary. Disinfection of Water Reuse System Periodic disinfection of water held for reuse may be required to abate bacteria and algae growth. This may be done using calcium hypochlorite tablets or by the addition of an ozone generator in a small recirculation system. Maintenance Cleanout of the CUDO system should be considered if there is sediment buildup of two or more inches at over 50% of the inspection ports. Cleaning shall be performed if sediment buildup is two inches or more over 75% of the system floor. In the event of a spill of a foreign substance, cleanout of the system should be considered. Maintenance Procedures 1.Locate the inspection, cleanout and access ports. Inspection and cleanout ports are typically 18-inchdiameter. Access ports are typically 24-inch or 30-inch diameter. Pictures should be taken to document the location or a site map should be generated to detail the as-built locations of the ports. 2.Unbolt and remove the access port lids. 3.Measure the sediment buildup at each port. If access is required to measure ensure only certified confined space entry personnel having appropriate equipment are allowed to enter the system.4.A thorough cleaning of the system (inlets, outlets, ports, and inlet bays) shall be performed by either a vacuum truck or by manual methods. 5.Inspect inlet and outlet locations for obstructions. Obstructions should be removed at this time. 6.Inspect the structural components of the system. 7.Fill in the CUDO Inspection/Maintenance Data Sheet and send a copy to the regulatory agency if necessary. Inspection / Maintenance Requirements Below are some recommendations for equipment and training of personnel to inspect and maintain a CUDO system. Personnel: OSHA Confined Space Entry Training is a prerequisite for entrance into a system. In the state of California personnel should be CalOSHA certified. Equipment: Record Taking (pen, paper, voice recorder) Proper Clothing (appropriate footwear, gloves, hardhat, safety glasses, etc.) Flashlight Tape Measure Measuring Stick Pry Bar Traffic Control (flagging, barricades, signage, cones, etc.) First Aid Materials Debris and Contaminant Containers Vacuum Truck Disposal of Gross Pollutants, Hydrocarbons, and Sediment The collected gross pollutants, hydrocarbons, and sediment shall be offloaded from the vacuum truck into DOT approved containers for disposal. Once in the container the maintenance contractor has possession and is responsible for disposal in accordance with local, state and federal agency requirements. Note: As the generator, the landowner is ultimately responsible for the proper disposal of the collected materials. Because the material likely contains petroleum hydrocarbons, heavy metals, and other harmful pollutants, the materials must be treated as EPA class 2 Hazardous Waste. Proper disposal is required. SUPPORT DRAWINGS AND SPECIFICATIONS ARE AVAILABLE AT WWW.CONTECHES.COM © 2022 CONTECH ENGINEERED SOLUTIONS LLC, A QUIKRETE COMPANY 800-338-1122 WWW.CONTECHES.COM ALL RIGHTS RESERVED. PRINTED IN THE USA. CONTECH ENGINEERED SOLUTIONS LLC PROVIDES SITE SOLUTIONS FOR THE CIVIL ENGINEERING INDUSTRY. CONTECH’S PORTFOLIO INCLUDES BRIDGES, DRAINAGE, SANITARY SEWER, STORMWATER AND EARTH STABILIZATION PRODUCTS. FOR INFORMATION ON OTHER CONTECH DIVISION OFFERINGS, VISIT CONTECHES.COM OR CALL 800-338-1122. Modular Wetlands Maintenance Guide 08/22 NOTHING IN THIS CATALOG SHOULD BE CONSTRUED AS A WARRANTY. APPLICATIONS SUGGESTED HEREIN ARE DESCRIBED ONLY TO HELP READERS MAKE THEIR OWN EVALUATIONS AND DECISIONS, AND ARE NEITHER GUARANTEES NOR WARRANTIES OF SUITABILITY FOR ANY APPLICATION. CONTECH MAKES NO WARRANTY WHATSOEVER, EXPRESS OR IMPLIED, RELATED TO THE APPLICATIONS, MATERIALS, COATINGS, OR PRODUCTS DISCUSSED HEREIN. ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE ARE DISCLAIMED BY CONTECH. SEE CONTECH’S CONDITIONS OF SALE (AVAILABLE AT WWW.CONTECHES.COM/COS) FOR MORE INFORMATION. ENGINEERED SOLUTIONS ATTACHMENT 4 City standard Single Sheet BMP (SSBMP) Exhibit [Use the City’s standard Single Sheet BMP Plan.] W W W W W W W W W W W W W S D S D S D SD SD SD SD SD SD SD SD SD S D S D S D S D S D S D S D S D S S S S S S S 5 0 4 0 4 0 5 0 4 0 4 0 W SD SD S D S D S D S S S S S S W W W W W W W W SD SD SD SD SD SD SD SD S D SD S D S D S D S D SD S D APN: 2 2 3 3 2 1 2 5 0 0 APN: 2 2 3 3 2 1 2 4 0 0 LOT 2 4 APN: 2 2 3 3 2 1 2 3 0 0 LOT 2 3 APN: 2 2 3 3 2 1 2 2 0 0 LOT 2 2 2 1 113 124 135 146 157 168 179 1810 10 LA COSTA CANYON HIGH SCHOOL FITNESS CENTER 10 1" = 20' feet 402020 0 scale THE EOW WILL VERIFY THAT PERMANENT BMPS ARE CONSTRUCTED AND OPERATING IN COMPLIANCE WITH THE APPLICABLE REQUIREMENTS. PRIOR TO OCCUPANCY THE EOW MUST PROVIDE: 1. PHOTOGRAPHS OF THE INSTALLATION OF PERMANENT BMPS PRIOR TO CONSTRUCTION, DURING CONSTRUCTION, AND AT FINAL INSTALLATION. 2. A WET STAMPED LETTER VERIFYING THAT PERMANENT BMPS ARE CONSTRUCTED AND OPERATING PER THE REQUIREMENTS OF THE APPROVED PLANS. 3. PHOTOGRAPHS TO VERIFY THAT PERMANENT WATER QUALITY TREATMENT SIGNAGE HAS BEEN INSTALLED. PRIOR TO RELEASE OF SECURITIES, THE DEVELOPER IS RESPONSIBLE FOR ENSURING THE PERMANENT BMPS HAVE NOT BEEN REMOVED OR MODIFIED BY THE NEW HOMEOWNER OR HOA WITHOUT THE APPROVAL OF THE CITY ENGINEER. MIKE MAGEE, PE WSP USA 10525 VISTA SORRENTO PKWY STE 350 SAN DIEGO, CALIFORNIA 92121 858-500-4500 1 EA 542-5A QUARTERLY SEMI-ANNUALLY4 1 EA 542-5A QUARTERLY AS NEEDED4 INLET FILTER 542-5A MONTHLY QUARTERLY8 EA.TC-50 4 542-5A MONTHLY QUARTERLY8 EA.4 SAN DIEGUITO UNION HIGH SCHOOL DISTRICT 710 ENCINITAS BLVD ENCINITAS, CALIFORNIA 92024 760-753-6491 PARTY RESPONSIBLE FOR MAINTENANCE: NAME _________________ _ ADDRESS ________ _ CONTACT _____ _ PHONE NO. ______ _ PLAN PREPARED BY: NAME ________ _ SIGNATURE COMPANY _______ _ ADDRESS __________ _ PHONE NO. ______ _ BMP NOTES: CERTIFICATION ____ _ 1. THESE BMPS ARE MANDATORY TO BE INSTALLED PER MANUFACTURER'S RECOMMENDATIONS AND/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. 5. REFER TO MAINTENANCE AGREEMENT DOCUMENT. 6. SEE PROJECT SWQMP FOR ADDITIONAL INFORMATION. 0 0 BMP CONSTRUCTION AND INSPECTION NOTES: \ \, -~\ ES \\ \ \ 189. 2 X \ \ 188. 9 ~ ASPH C. 189. X CONC BMP ID# BMPTYPE SYMBOL CASQA NO. TREATMENT CONTROL '1' MODULAR IHI "-!..I WETLAND BF-3 HYDROMODIFICATION ® □Ef~~~ON j jjjjj jjjjjjjjjjjjjjjj jjj.~I BF-3 SOURCE CONTROL 0-@ Ill @-@ STENCILS Ill SD-13 * CHOOSE FROM THE LIST BELOW FOR COMPLETING THE FIELDS IN THE INSPECTIONS 8,. MAINTENANCE FREQUENCY COLUMNS: ANNUAL SEMI-ANNUALLY QUARTERLY BIMONTHLY MONTHLY AS NEEDED NONE WEEKLY 1 Tl ME PER YEAR 2 Tl MES PER YEAR 3 Tl MES PER YEAR 4 Tl MES PER YEAR BMP TABLE QUANTITY DRAWING NO. SHEET NO.(S) INSPECTION * FREQUENCY MAINTENANCE * FREQUENCY 11 AS BUILT" RCE __ _ EXP.____ DATE REVIE\./ED BY, INSPECTOR DATE ,_ ____________________ ,_---i---llsHEETl.c_rr_Y_o_F_c_A_R_1_s_B_A_D~lsHEETsl _ ENGINEERING DEPARTMENT 1----1----+----------------+-----11----+--+-----1 GRADING PLANS FOR: 1----t----+----------------+-----11----+--+-----1 GR2023-0015 SINGLE SHEET BMP SITE PLAN APPROVED: JASON S. GELDERT t---t---+,r---------------t-----11----+--+----I ENGINEERING MANAGER RCE 63912 EXPIRES 9 30 24 DATE l DWN BY: WPR PROJECT NO. DRAWING NO. DATE INITIAL DATE INITIAL CHKD BY: MEM OTHER APPROVAL CITY APPROVAL RVWD BY: PD2023-0006 545-5A DATE INITIAL ENGINEER OF WORK REVISION DESCRIPTION (9 z -0 ~ (9