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Home My WebLink AboutCDP 2022-0034; PACIFIC VIEW TOWNHOMES; STORM WATER QUALITY MANAGEMENT PLAN (SWQMP); 2025-06-25TABLE 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 Trash Capture Structural BMPs Attachment 1: Backup for Trash Capture BM Ps Attachment 1a: OMA Exhibit Attachment 1 b: Tabular Summary of DMAs Attachment 1 c: Trash Capture BMP Design Calculations Attachment 2: Trash Capture BMP Maintenance Thresholds and Actions Attachment 3: Single Sheet BMP (SSBMP) Exhibit CERTIFICATION PAGE Project Name: PACIFIC VIEW TOWNHOMES Project ID: CDP 2022-0034 (DEV2022-0110) 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 BM Ps 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 BM Ps for this project, of my responsibilities for project design. ~~-RCE 69339, Exp: 6/30/26 Engineer of Work's Signature, PE Number & Expiration Date Bryan Hill Print Name Tory R. Walker Engineering Company 6/25/25 Date [Insert City's Storm Water Standard Questionnaire (Form E-34) here] {'city of Carlsbad STORM WATER STANDARDS QUESTIONNAIRE Development Services Land Development Engineering 1635 Faraday Avenue 442-339-2750 www.carlsbadca.gov E-34 I INSTRUCTIONS: 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 BM P 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: PACIFIC VIEW TOWN HOMES APN: ADDRESS: 3710-3728 Carlsbad Boulevard, Carlsbad, CA 92008 204-251-21 to 24 The project is (check one): D New Development 181 Redevelopment The total proposed disturbed area is: 3,600 ft2 ( 0.08 ) acres The total proposed newly created and/or replaced impervious area is: 2,230 ft2 ( 0.05 ) acres If your project is covered by an approved SWQMP as part of a larger development project, provide the project ID and the SWQM P # 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 YES NO Date: Project ID: City Concurrence: □ □ By E-34 Page 1 of 4 REV 12/2024 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 BM P 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. STEP2 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 quidance? 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 BM P 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. E-34 Page 2 of 4 REV 12/2024 STEP3 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 or redevelopment project 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 . . . * EnYlronmentally Sens1t1ve Areas include but are not limited to all Clean Water Act Section 303(d) 1mpa1red 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 (1 994) 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. E-34 Page 3 of 4 REV 12/2024 SITE INFORMATION CHECKLIST Proiect Summarv Information Project Name PACIFIC VIEWTOWNHOMES Project ID Project Address 3710-3728 Carlsbad Boulevard, Carlsbad, CA 92008 Assessor's Parcel Number(s) (APN(s)) 204-251-21 & 204-251-22, 204-251-23, 204-251-24 Project Watershed (Hydrologic Unit) Carlsbad 904.31 -Agua Hedionda HA, Los Monos HSA Parcel Area 0.64 Acres (27,965 Square Feet) Description of Existing Site Condition and Drainage Patterns Select applicable Land Use Category: High Density Residential 0 R-23 (15-23 du/ac) □ R-30 (23-30 du/ac) Industrial □ Pl (Planned Industrial) Commercial □ CF (Community Facilities) □ GC (General Commercial) □ L (Local Shopping Center) □ R (Regional Commercial) DV-B (Village-Barrio) DVC (Visitor Commercial) DO (Office) DVC/OS (Visitor Commercial/Open Space) Mixed Urban □ Pl/O (Planned Industrial/Office) □ Public Transportation Stations 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]: 1 & 2. The existing drainage conveyance on the site is urban, as the project site is developed with two multi-family residential structures. A parking lot is located in the back of the buildings on the east side. A private underground storm drain system collects storm water runoff from the parking area, and from the front of the northern building, for conveyance to a public storm drain system in Juniper Ave. Runoff from the decks and landscaping along the front of the southern building flows overland into Carlsbad Blvd. 3. No runoff from off-site areas is conveyed through the site . Description of Prooosed Site Development and Drainage Patterns Project Description / Proposed Land Use and/or Activities: The proposed project includes the construction of new expanded decks along the front of the two residential buildings. The decks will each have catch basins and storm drain that route flows to a junction box with a collector screen TC-BMP (2 total) Does the project include grading and changes to site topography? □Yes El No Description/ Additional Information: No, the project does not include any major grading or changes to the site's topography. Does the project include changes to site drainage (e.g., installation of new storm water conveyance systems)? 0Yes □No Description/ Additional Information: Yes, the project includes changes to site drainage: the installation of storm drains for the proposed patios, which will discharge into a junction box with a TC-BMP. The outlet of the northern junction box will connect to the existing storm drain onsite. The southern box will discharge at the face of the proposed deck, for conveyance overland, as in the existing condition. The project will honor existing drainage patterns and outfall locations. 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. [Insert City's Standard Project Requirement Checklist Form E-36 (here)] C cityof Carlsbad STANDARD PROJECT REQUIREMENT CHECKLIST E-36 Project Information Project Name: PACIFIC VIEWTOWNHOMES Project ID: CDP2022-0034 (DEV2022-0110) DWG No. or Building Permit No.: Development Services Land Development Engineering 1635 Faraday Avenue 442-339-2750 www.carlsbadca.gov 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. ExistinQ Natural Site Features (see Fact Sheet BL-1) 1. Check the boxes below for each existing feature on 1. Select the BMPs to be implemented for each identified feature. Explain the site why any BMP not selected is infeasible in the area below. 50-G 50-H Conserve natural Provide buffers around waterbodies features D Natural waterbodies □ LI D Natural storage reservoirs & drainage corridors □ -- □ Natural areas, soils, & vegetation (incl. trees) LI -- B. BMPs for Common Impervious Outdoor Site Features (see Fact Sheet BL-2) 1. Check the boxes below for each 2. Select the BMPs to be implemented for each proposed feature If neither BMP SD-B nor proposed feature. SD-I is selected for a feature, explain why both BMPs are infeasible in the area below. 50-B 50-1 Minimize size of Direct runoff to pervious Construct surfaces from impervious areas areas permeable materials □ Streets and roads LI LI [!] Check this box to confirm il Sidewalks & walkways I!) □ that all impervious areas on the site will be minimized D Parking areas & lots □ □ where feasible. □ Driveways □ LI If this box is not checked, Ill Patios, decks, & courtyards I!) □ identify the surfaces that cannot be minimized in area D Hardcourt re creation areas □ LI below, and explain why it is E-36 Page 1 of 4 Revised 04/23 □ Other: ______ _ The project will minimize impervious surface area by removing walkways in areas that decks are expanding, resulting in minimal net impact to total impervious area. LJ LJ infeasible to do so C. D BMPs for Rooftop Areas: Check this box if rooftop areas are proposed and select at least one BMP below. (see Fact Sheet BL-3) If no BMPs are selected, explain why they are infeasible in the area below. DSD-B Direct runoff to pervious areas OSD-C Install green roofs D SD-E Install rain barrels D. D BMPs for Landscaped Areas: Check this box if landscaping is proposed and select the BMP below □ SD-K Sustainable Landscaping (see Fact Sheet BL-4) If SD-K is not selected, explain why it is infeasible in the area below. 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 Iii Check here if none are proposed □ Trash & Refuse Storaqe □ Materials & Equipment Storaqe E-36 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 SC-A SC-B SC-C Overhead Separation Wind covering flows from protection adjacent areas LI LI LI LI □ LI Page 2 of 4 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-D Sanitary sewer LI □ SC-E Containment system LI □ Revised 04/23 other LI □ D Loadinq & Unloadinq □ □ Li □ LJ LJ D Fuelinq □ Li □ □ □ □ D Maintenance & Repair □ □ □ □ □ □ D Vehicle & Equipment Cleaninq □ Li □ □ Li LI D 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 . Dare not proposed Iii will be labeled with stenciling or signage to discouraqe dumpinq (SC-F) • Interior work surfaces, floor drains & Iii are not proposed D will not discharge directly or indirectly to the MS4 sumps. or receiving waters • Drain lines (e.g. air conditioning, boiler, Iii are not proposed D will not discharge directly or indirectly to the MS4 etc.) . or receiving waters • Fire sprinkler test water . Iii are not proposed □ will not discharge directly or indirectly to the MS4 or receivina waters Provide discussion/justification for source control BMPs that will not be implemented (either partially or fully}: E-36 Page 3 of 4 Revised 04/23 SUMMARY OF TRASH CAPTURE BMPS Trash Capture BMPs All projects subject to trash capture requirements must implement trash capture BM Ps (see Chapter 4 of the BMP Design Manual). Selection of trash capture BM Ps must be based on the selection process described in Chapter 4. Trash capture 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 trash capture BM Ps (see Section 1.12 of the BM P Design Manual). Trash capture BM Ps 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 trash capture BMP implementation at the project site in the box below. Then complete the trash capture BMP summary information sheet for each trash capture BMP within the project (copy the BMP summary information page as many times as needed to provide summary information for each trash capture BMP). Describe the general strategy for trash capture BMP implementation at the site. This information must describe how the steps for selecting and designing trash capture BMPs presented in Section 4.4 of the BMP Design Manual were followed, and the results (type of BMPs selected). The proposed project includes the construction of new expanded decks along the front of the two residential buildings. The decks will each have catch basins and storm drain that route flows to a junction box with a collector screen TC-BMP (2 total). The current list of Certified Trash Full Capture Systems, provided by the State Water Resources Control Board (SWRCB), was used to determine available options. Given the relatively small area requiring trash capture, the primary goal of the project was to consolidate flows to the minimum number of TC-BMPs and to propose a device that's easy to maintain. After consulting the list of approved TC-BMPs, the ADS Flexstorm Connector Pipe Screen was selected for the project and will be installed in two locations. [Continue on next page as necessary.] [Continued from previous page -This page is reserved for continuation of description of general strategy for trash capture BM P implementation at the site.] Trash Capture BMP Summary Information BMP ID No. Type of Trash Capture BM P Permit No. Drawing No. TCBMP1 ADS Flexstorm Connector Pipe Screen C1.2 TCBMP2 ADS Flexstorm Connector Pipe Screen C1.2 ATTACHMENT 1 BACKUP FOR TRASH CAPTURE BMPS This is the cover sheet for Attachment 1. Check which Items are Included behind this cover sheet: Attachment Contents Checklist Sequence Attachment 1 a OMA Exhibit (Required) 0 Included See OMA Exhibit Checklist on the back of this Attachment cover sheet. (24"x36" Exhibit typically required) Attachment 1 b Tabular Summary of DMAs Showing 121 Included on OMA Exhibit in OMA ID matching OMA Exhibit, OMA Attachment 1 a Area, and OMA Type (Required)* □ Included as Attachment 1 b, separate from OMA Exhibit *Provide table in this Attachment OR on OMA Exhibit in Attachment 1 a Attachment 1 c Trash Capture BMP Design 0 Included Worksheets/ Calculations (Required) Refer to Appendices J of the BM P Design Manual for trash capture BM P design guidelines Use this checklist to ensure the required information has been included on the OMA Exhibit: The OMA Exhibit must identify: 0Site topography and impervious areas 0Site drainage network and connections to drainage offsite □ Proposed grading (if applicable) 0 Drainage management area (OMA) boundaries, OMA ID numbers, and OMA areas (square footage or acreage) 0Trash Capture BMPs (identify location and type of BMP) Certified Trash Full Capture Systems Available to the Public mosquitoes, abate mosquito sources, and charge the landowner for work performed and/or charge fees if a landowner is unwilling or unable to address a mosquito source arising from their property. If not designed properly, a System may impede the mosquito vector control district's ability to (1) visually inspect the System and/or storm vault for mosquito breeding, and (2) apply the appropriate chemical treatment. Moreover, some Systems may create a habitat for mosquitoes. All the Systems in the tables below have been reviewed and approved by the Mosquito Vector Control Association of California for vector control accessibility. However, prior to installation of any Systems, the local mosquito vector control district should be contacted to ensure the installation conforms to the local district's visual inspection, treatment, and vector breeding minimizing guidelines. The Mosquito Vector Control Association of California may also be contacted via email at Trashtreatment@mvcac.org. Certified Trash Full Capture System Tables The Systems included in the tables below are: 1) new Systems certified by the State Water Board Executive Director after adoption of the Trash Provisions, and 2) legacy Systems that were certified pursuant to the Trash Provisions include those full capture systems that were listed in Appendix I of the Bay Area-wide Trash Capture Demonstration Project, Final Project Report (May 8, 2014). All Systems remain certified unless and until they are decertified by the State Water Board's Executive Director or designee. Legacy Systems' descriptions are included in "fact sheets" that have been updated to address the application requirements for new Systems. The tables do not include the Department of Transportation's Systems as its Systems are not available to the public. Multi-benefit trash treatment systems are listed separately on the State Water Board's Trash Implementation webpage at: https://www.waterboards.ca.gov/water_issues/programs/stormwater/trash_implementati on.html. Systems are either identified by their application number or, for legacy Systems, by a fact sheet alpha numeric designation. Please note: Only Systems originally manufactured or distributed by the listed applicants are certified full capture systems. The alphabetical tables of System applicants are divided into two categories: • Catch Basin Inserts and Other Insert Systems. These Systems typically are inserted into existing stormwater infrastructure; and Page 2 of 10 Certified Trash Full Capture Systems Available to the Public • High Flow Capacity Trash Full Capture Systems. These Systems are generally self-contained units that typically are not inserted into existing stormwater infrastructure and that are designed to treat trash from large drainage areas. How to Access Certified System Applications and Legacy System Fact Sheets Other than those applications pertaining to the Department of Transportation's certified Systems, all certified System applications and legacy System fact sheets may be obtained from the California Stormwater Quality Association's trash webpage at: https://www.casqa.org/resources/trash/certified-full-capture-system-trash-treatment- control-devices. To obtain the Department of Transportation's certified applications, please contact Leo Cosentini (contact information below). All questions concerning the Trash Provisions and the tables below should be directed to Leo Cosentini by email at Leo.Cosentini@waterboards.ca.gov or by phone at (916) 341-5524. Page 3 of 10 Certified Trash Full Capture Systems Available to the Public TABLE 1. Catch Basin Inserts and Other Insert S stems Applicant/Owner Full Capture System Name AbTech Industries, Inc. Ultra Urban Filter Curb Opening and Drop-In Advanced Drainage Systems, FLEXSTORM PURE Inc. Full Trash Capture Inserts Advanced Drainage Systems, FLEXSTORM Inc. Connector Pipe Screen Bio Clean® Environmental Curb Inlet and Grate Services, Inc. Inlet Filters Bio Clean® Environmental Modular Connector Pipe Services, Inc. Trash Screen BrightWater™ Connector Pipe Screen BrightWater™ Curb Inlet Filter Date of Application Certification and Update (if applicable), or Fact Sheet Update Application 25 06/30/20 Application 3 03/15/18 Updated 04/21/21 Fact Sheet ADS-1 Updated 06/08/21 Application 4 03/15/18 Updated 10/21/21 Fact Sheet BC-3 Updated 04/30/20 Application 29 03/15/18 Updated 12/29/20 Application 26 06/30/20 Date of Vector Control Accessibility Approval 04/8/20 03/30/21 03/30/21 10/20/21 03/10/20 11/19/20 04/17/20 Page 4 of 10 ATTACHMENT 2 Trash Capture 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 2 must identify: □ Typical maintenance indicators and actions for proposed trash capture BMP(s) based on Section 7.7 of the BMP Design Manual Final Design level submittal: Attachment 2 must identify: 0 Specific maintenance indicators and actions for proposed trash capture BM P(s). This shall be based on Section 7.7 of the BMP Design Manual and enhanced to reflect actual proposed components of the trash capture BMP(s) 0 How to access the trash capture BMP(s) to inspect and perform maintenance 0 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 trash capture BM P and compare to maintenance thresholds) 0 Manufacturer and part number for proprietary parts of trash capture BM P(s) when applicable 0 Maintenance thresholds for BMPs subject to siltation or heavy trash (e.g., silt level posts or other markings shall be included in all BM P 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.) 0 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 STANDARD CPS SIZING* LINEAR ROLLED MAX. 50% CLOGGED SCREEN SCREEN NET BYPASS SCREEN SCREEN OPEN AREA1 TREATED TREATED CAPACITY4 MODEL HEIGHT FLOW2 FLOW3 WIDTH LENGTH IINl IINl IINl IFTA2} ICFSl ICFSl ICFSl I 17112H-L 12 18 12 0.49 1.19 0.73 3.40 I 18L12H-L 18 24 12 0.69 1.67 1.02 4.54 24L12H-L 24 30 12 0.89 2.14 1.31 5.67 30L12H-L 30 36 12 1.09 2.62 1.60 6.81 36L12H-L 36 42 12 1.29 3.10 1.90 7.94 42L12H-L 42 48 12 1.48 3.57 2.19 9.08 48L12H-L 48 54 12 1.68 4.05 2.48 10.21 60L12H-L 60 66 12 2.08 5.00 3.06 12.48 72L12H-L 72 78 12 2.47 5.96 3.65 14.75 84L12H-L 84 90 12 2.87 6.91 4.23 17.02 24L18H-L 24 30 18 1.45 4.28 2.62 5.67 30L18H-L 30 36 18 1.78 5.24 3.21 6.81 36L18H-L 36 42 18 2.10 6.19 3.79 7.94 42L18H-L 42 48 18 2.42 7.14 4.37 9.08 48L18H-L 48 54 18 2.74 8.09 4.96 10.21 60L18H-L 60 66 18 3.39 10.00 6.12 12.48 72L18H-L 72 78 18 4.04 11.90 7.29 14.75 84L18H-L 84 90 18 4.68 13.81 8.45 17.02 12L12H-U 12 24 12 0.69 1.67 1.02 4.54 18L12H-U 18 30 12 0.89 2.14 1.31 5.67 24L12H-U 24 36 12 1.09 2.62 1.60 6.81 30L12H-U 30 42 12 1.29 3.10 1.90 7.94 36L12H-U 36 48 12 1.48 3.57 2.19 9.08 42L12H-U 42 54 12 1.68 4.05 2.48 10.21 48L12H-U 48 60 12 1.88 4.53 2.77 11.35 60L12H-U 60 72 12 2.28 5.48 3.36 13.62 72L12H-U 72 84 12 2.67 6.43 3.94 15.89 84L12H-U 84 96 12 3.07 7.39 4.52 18.16 24L18H-U 24 36 18 1.78 5.24 3.21 6.81 30L18H-U 30 42 18 2.10 6.19 3.79 7.94 36L18H-U 36 48 18 2.42 7.14 4.37 9.08 42L18H-U 42 54 18 2.74 8.09 4.96 10.21 48L18H-U 48 60 18 3.07 9.05 5.54 11.35 60L18H-U 60 72 18 3.71 10.95 6.71 13.62 72L18H-U 72 84 18 4.36 12.85 7.87 15.89 84L18H-U 84 96 18 5.01 14.76 9.04 18.16 *All va lues are conservative estimates accounting for site specific limitations. Custom sizing available upon request when standard configurations do not apply. 1. "Screen Net Open Area" is listed as the product of rolled screen length or perimeter and screen height subtracting support bracing and brackets while accounting for a 50% reduction in perforated net open area to physical screen area. 2. "Maximum Treated Flows" utilize an orifice flow equation where the orifice coefficient (C) has a value of 0.6 and downstream head has an assumed maximum of 50% of screen height when calculating head on the centroid of screen. 3. "50% Clogged Treated Flows" utilize an orifice flow equation where the orifice coefficient (C) has a value of 0.6 and downstream head has an assumed maximum of 25% of screen height when calculating head on the centroid of screen. Screen clogging is assumed to be uniform across the height of the screen. 4. "Bypass Capacity" calculated with an installed lid/deflector height of 811 over the top of the screen and a maximum water elevation of 10" over the installed screen height. TABLE 7-6. Maintenance Indicators and Actions for Trash Capture BMPs Typical Maintenance lndicator(s) for Maintenance Actions Trash Capture BMPs Accumulation of sediment, litter, or Remove and properly dispose of accumulated debris materials. Obstructed inlet or outlet structure Clear obstructions. Clogged filter media Remove and properly dispose of filter media, and replace with fresh media. Damage to components of the Repair or replace as applicable. filtration system Note: For trash capture BMPs, refer to the manufacturer's maintenance guide. Reference: Carlsbad BMP Design Manual, Chapter 7: Long Term Operation and Maintenance, 7.7.5 Maintenance of Trash Capture Devices ATTACHMENT 3 City standard Trash Capture BMP Exhibit [Use the City's standard Trash Capture BMP Plan.]