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AMEND 2023-0001; SMAC; TRASH CAPTURE STORM WATER QUALITY MANAGEMENT PLAN FOR 5807 VAN ALLEN WAY; 2025-06-17
City of Carlsbad TRASH CAPTURE STORM WATER QUALITY MANAGEMENT PLAN (SWQMP) TEMPLATE E-358 (FOR STANDARD PROJECTS ONLY) CITY OF CARLSBAD TRASH CAPTURE Development Services Land Development Engineering 1635 Faraday Avenue 442-339-2750 www.carlsbadca.gov STORM WATER QUALITY MANAGEMENT PLAN (SWQMP) FOR E-35A Faraday Industrial / 5807 Van Allen Way Trash Capture AMEND 2023-0001 DWG 330-?B GR No. 2024-0029 ENGINEER OF WORK: Luis Parra, PhD, CPSWQ, ToR, D.WRE. R.C.E. 66377 PREPARED FOR: 5801-5807 Van Allen Owner, LLC. 12501 Seal Beach Blvd, Ste 225 Seal Beach, CA 907 40 PREPARED BY: REC Consultants, Inc. 2970 Fifth Ave, Ste 340 San Diego, CA 92103 (619) 232-9200 DATE: June 17th, 2025 REV 12/2024 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 Trash Capture Structural BMPs Attachment 1: Backup for Trash Capture BMPs Attachment 1 a: DMA Exhibit Attachment 1 b: Tabular Summary of DMAs Attachment 1c: 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: 5807 Van Allen Way Trash Capture Project ID: AMEND 2023-0001 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. ~ RCE66377 Engineer of Work's Signature, PE Number & Expiration Date Luis Parra, PhD, CPSWQ, ToR, D.WRE Print Name REC Consultants, Inc. Company 6/17/2025 Date PROJECT VICINITY MAP NOTTO SCALE I ., NORTH AVl.lRA PD C ""~ ,,. ocu 1-IILLS'j: I! ~ PROJECT SITE I t..., J .. . Mga Ntlf1!! COOllruMr P~ "" .. .,, ~ '1-<t . ,..di' {'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 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 concurrentlv. PROJECT INFORMATION PROJECT NAME: Faraday Industrial/ 5807 Van Allen Way Trash Capture APN: ADDRESS: 5807 Van Allen Way, Carlsbad, CA 92008 APN: 212-120-02 The project is (check one): D New Development ~ Redevelopment The total proposed disturbed area is: 3,500 ft2 ( 0.08 ) acres The total proposed newly created and/or replaced impervious area is: 2,866 ft2 ( 0.066 ) 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 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 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. 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 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. 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 □ lg] 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 □ lg] 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 □ lg] 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 □ lg] 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 □ lg] 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 □ lg] 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 □ lg] Sensitive Area (ESA)? "Discharging Directly to" includes flow that is conveyed overland a distance of 200 feet or Jess 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 □ lg] 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 □ lg] 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 □ lg] 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 □ lg] 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) 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 (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. E-34 Page 3 of 4 REV 12/2024 STEP4 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 BM P's required for PDP apply to the entire development. Go to step 5, complete the trash capture question. STEPS 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? R-23 (15-23 du/ac), R-30 (23-30 du/ac), Pl (Planned Industrial), CF (Community Facilities), GC (General 181 □ Commercial), L (Local Shopping Center), R (Regional Commercial), V-B (Village-Barrio), VC (Visitor Commercial), 0 (Office), VC/OS (Visitor Commercial/Open Space), Pl/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 vou answered "no", Go to step 6, check the second or third box as determined in step 3. STEP6 CHECK THE APPROPRIATE BOX(ES) AND COMPLETE APPLICANT INFORMATION 181 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). 181 My project is a 'STANDARD PROJECT' OR EXEMPT from PDP and must only comply with 'STANDARD PROJECT' stormwater requirements of the BMP Manual. As part of these requirements, I will submit a "Standard Project Requirement Checklist Form E-36' and incorporate low impact development strategies throughout my project. If my project is subject to TRASH CAPTURE REQUIREMENTS, I will submit a TRASH CAPTURE Storm Water Quality Management Plan (TCSWQMP) per E-35A. D 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. D My project is NOT a 'development project' and ~not subject to the requirements of the BMP Manual. Applicant Information and Signature Box ~i~HSSI~ {{S: I>-, A~ V ~ 1::? 't-, L • p "'" -_Applicant Title: Director of Water Resources Applicant Name:~ arra --1 ~ 5 Rcr ~ 6oJ77 ,... ~ ~ *"·)1)'6/20/26 * • . ~ C/v \. Date: 6/17/2025 Applicant Signature:_ __ 'for m ,\'<:I~ - - E-34 Page 4 of 4 REV 12/2024 SITE INFORMATION CHECKLIST Proiect Summarv Information Project Name Faraday Industrial / Van Allen Way -5807 Van Allen Way Project ID AMEND 2023-0001 Project Address 5807 Van Allen Way, Carlsbad, CA 92008 Assessor's Parcel Number(s) (APN(s)) 212-120-02 Project Watershed (Hydrologic Unit) Carlsbad 904 Parcel Area 2.84 < 123,710 Acres Square Feet) Description of Existing Site Condition and Drainage Patterns Select applicable Land Use Category: High Density Residential DR-23 (15-23 du/ac) □ R-30 (23-30 du/ac) Industrial 0 Pl (Planned Industrial) Commercial □CF (Community Facilities) □ GC (General Commercial) □ L (Local Shopping Center) □ R (Regional Commercial) DV-B (Village-Barrio) □ VC (Visitor Commercial) DO (Office) □ VC/OS (Visitor Commercial/Open Space) Mixed Urban □ Pl/0 (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]: Existing site drains to grated inlets via surface runoff or brow ditches and into a storm drain system. Existing drainage is urban. Description of Proposed Site Development and Drainage Patterns Project Description / Proposed Land Use and/or Activities: The Faraday Industrial Project report was originally prepared on 9/17 for Faraday Industrial at 5807 Van Allen Way. On 6/24 the report was updated to account for minor changes in pervious and impervious areas with the incorporation of new parking spots. Does the project include grading and changes to site topography? EIYes □No Description / Additional Information: proposed grading area is less than 5,000 sf for proposed parking spots. Does the project include changes to site drainage (e.g., installation of new storm water conveyance systems)? 0Yes □No Description / Additional Information: The only changes to the site drainage is the addition of a trash capture device in one (1) inlet. 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 purpose of this report is to design a trash capture device in an inlet at the entrance of a pipe draining into the drainage system. This trash capture device will more than satisfy the trash capture requirements, as the new grading area is less than 5,000 square feet and the system designed in this report captures trash for an area over 23,655 square feet. C cityaf Carlsbad STANDARD PROJECT REQUIREMENT CHECKLIST E-36 Project Information Project Name: Faraday Industrial / 5807 Van Allen Way Trash Capture Project ID: AMEND 2023.0001 DWG No. or Building Permit No.: owG 330-7B 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. Existing 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. SD-G SD-H Conserve natural Provide buffers around waterbodies features □ Natural waterbodies □ u □ Natural storaqe reservoirs & drainaqe corridors □ -- [!) Natural areas, soils, & vegetation (incl. trees) l!.J -- 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. SD-B SD-I Minimize size of Direct runoff to pervious Construct surfaces from impervious areas areas permeable materials □ Streets and roads u □ [!I Check this box to confirm □ Sidewalks & walkways □ □ that all impervious areas on the site will be minimized Iii Parking areas & lots □ [!I where feasible. □ Driveways □ □ If this box is not checked, □ Patios, decks, & courtyards □ □ identify the surfaces that cannot be minimized in area □ Hardcourt recreation areas □ □ below, and explain why it is E-36 Page 1 of 4 Revised 04/23 □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. (see Fact Sheet BL-3) If no BMPs are selected, explain why they are infeasible in the area below. No buildings proposed. Only parking area proposed. OSD-B Direct runoff to pervious areas D SD-C Install green roofs OSD-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 (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): No landscaped areas proposed. Only parking area proposed. 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 2. Which BMPs will be used to prevent 3. Where will runoff from the work areas below materials from contacting rainfall or work area be routed? runoff? Iii Check here if none are proposed (See Fact Sheet BL-5) (See Fact Sheet BL-6) Select all feasible BMPs for each work area Select one or more option for each work area SC-A SC-B SC-C SC-D SC-E Other Overhead Separation Wind Sanitary Containment covering flows from protection sewer system adjacent areas □ Trash & Refuse Storage □ □ □ □ □ □ □ Materials & Equipment Storaqe □ □ □ □ □ □ E-36 Page 2 of 4 Revised 04/23 □ Loading & Unloadinq □ □ □ □ □ □ □ Fuelinq □ □ □ □ □ □ □ Maintenance & Repair □ □ □ □ □ □ □ Vehicle & Equipment Cleanina □ □ □ □ □ □ □ 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 ... Iii are not proposed □ will be labeled with stenciling or signage to discouraae dumoina (SC-Fl • Interior work surfaces, floor drains & Iii are not proposed □ will not discharge directly or indirectly to the MS4 sumps ... or receiving waters • Drain lines (e.g. air conditioning, boiler, Iii are not proposed □ 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): None proposed because only parking areas are proposed. E-36 Page 3 of 4 Revised 04/23 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 oroiect desion. ~ Preparer Signature: . I Date: 6/17/2025 Print preparer name: LU,.:, ' a,'' a E-36 Page 4 of 4 Revised 04/23 SUMMARY OF TRASH CAPTURE BMPS Trash Capture BMPs All projects subject to trash capture requirements must implement trash capture BMPs (see Chapter 4 of the BMP Design Manual). Selection of trash capture BMPs 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 BMPs (see Section 1.12 of the BMP Design Manual). Trash capture 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 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 trash capture device will be placed in an inlet at the entrance of a pipe draining into the drainage system. This inlet captures over 23,655 square feet of area, while the proposed grading only encompasses less than 10,000 square feet of area. See detailed methodology for trash capture design in attachment c. [Continue on next page as necessary.] [Continued from previous page -This page is reserved for continuation of description of general strategy for trash capture BMP implementation at the site.] Trash Capture BMP Summary Information BMP ID No. Type of Trash Capture BMP Permit No. Drawing No. BMP-1 Catch Basin Insert 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 Seauence Attachment 1 a OMA Exhibit (Required) 0Included 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 0 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 0Included Worksheets / Calculations (Required) Refer to Appendices J of the BMP Design Manual for trash capture BMP design guidelines Use this checklist to ensure the required information has been included on the DMA Exhibit: The OMA Exhibit must identify: □ Site topography and impervious areas □ Site drainage network and connections to drainage offsite □ Proposed grading (if applicable) □ Drainage management area (OMA) boundaries, OMA ID numbers, and OMA areas (square footage or acreage) □Trash Capture BMPs (identify location and type of BMP) CJ J v-- TRIBUTARY AREA TO TRASH CAPTURE AREA TOTAL AREA (AC) DMA-1 0.543 - ' ' I INC \ • I \ I ( ~ .... .. • -- I T~ASH CAPTU~E ~EVICE __ 1 -hc i'-~ ' - • ' ' \ •' • ', -- ~ JDMA-1j • VA L M p .. J'. - a• a a - , maoo a r 580 ... -, LLEN WA.V T 7 e -...... 1 1 a • - l I .... r l • [ -~, .. -----, 7·~l'f~ ---- -·~~ ~~ -~_1\ ~ I ~ .._ ... .,_ ©-- l l l -, l , ri I I • • ,,, l!!I -I r~ -• I I ~_r. '. ---- ... • • I I >--< ~ z w • ::t <( . - • 'l .S UIL T" ma LC'1T 74 r o es ---------------- w !I Attachment 1 C: Calculations TECHNICAL REPORT Hydraulic Design of Screen for Trash Capture at Entrance of Pipe FARADAY INDUSTRIAL/ VAN ALLEN WAY 5807 Van Allen Way Carlsbad, CA 92008 Prepared For: KARN Engineering and Surveying, Inc. April 23, 2025. Prepared by: Luis Pa a, PhD, CPSWQ, ToR, D.WRE. R.C.E. 66377 REC Consultants, Inc. REC Consultants 2970 Fifth A venue, Suite 340 San Diego, CA 92103 Telephone: (619) 232-9200 REC Consultants, Inc. HYDRAULIC DESIGN OF SCREENS FOR TRASH CAPTURE AT THE ENTRANCE OF DRAINAGE PIPES AT 5807 VAN ALLEN WAY/ FARADAY INDUSTRIAL Date: 4/23/2025. 1. ANTECEDENTS The purpose of this analysis is to design a trash capture device in an inlet at the entrance of a pipe draining into the drainage system. This trash capture device will more than satisfy the trash capture requirements, as the new grading area is less than 5,000 sq-ft (not considered a PDP) but the system designed traps the trash for an area over 23,655 sq-ft (0.543acres). It should be pointed out that based on the DMA swapping concept, there is no need to design a trash capture device for each inlet where the new grading area discharges, as long as the alternative area (0.543 acres) has the same POC as the new grading area, which is the case for this project. 2. DRAINAGE AREAS AND PEAK FLOWS Figure 1 shows the location of the Screen Trash Capture (STC) devices, while Table 1 shows the main characteristics of the contributing areas to obtain the trash capture flow and the 100 year peak flowrate. The intensity of design for the trash capture flow is equivalent to the NOAA 14 1 hour, 1 year intensity (0.412 in/hr at 5807 Van Allen Way). The intensity of design for the 100 year peak flow is equivalent to the NOAA 14 5 min, 100 year intensity (4.57 in/hr at 5807 Van Allen Way). The time of concentration, C coefficient, and drainage area were obtained from the drainage report analysis (reference [1]). The Otrash and 0100 is simply O = C·l·A with only the intensity varying. TABLE 1. Peak Flows Area Runoff 100-yr, 5-min Q100 1-yr, 1-hr Intensity, I Qi,ash (ac) Coefficient, C Intensity, I (in/hr) (cfs) (in/hr) (cfs) 0.543 0.95 4.57 2.357 0.421 0.217 The STC device must be able to (a) allow the flow Otrash to pass thru it without any by-pass, and (b) allow the safe passage of 0100 without impacting flooding conditions upstream. Detailed methodologic approach will be explained in the next section. 3. HYDRAULIC DESIGN OF TRASH SCREENS AT ENTRANCE OF PIPES Based on reference [2] submitted and approved by the State Water Board, and taking into account hydraulic equations related to weir, orifice, and critical depth conditions (reference [3], among many others), the following is the detailed methodology for trash screen design at the entrance of pipes. 1 FARADAY INDUSTRIAL/ VAN ALLEN WAY, HMP AND 100 YEAR DETENTION FACILITY Screen for Tash Capture. February 6, 2025 5• CONC. CURB PER PLAN 8,5' 4• WHITE_/ PARKING STRIPE PER PLAN FIGURE 1. Location of Screen Trash Capture Device fflASH OSURE ,. :~ ,:' ~ ~·r :.,. • :·,_.(_.·. 2 FARADAY INDUSTRIAL/ VAN ALLEN WAY, HMP AND 100 YEAR DETENTION FACILITY Screen for Tash Capture. February 6, 2025 3.1 Downstream Requirements: Tail water conditions REC Consultants, Inc. In reference to Figure 2, there are typically 2 water conditions at the entrance of a super-critical pipe with high slope downstream: I, critical depth at entrance (EE/D !'. 1.5); or II, rapid flow at inlet (EE/D > 1.5). D 1-11 (J'j r/1 VI Hs:Iot hamou nt EE ~ ~---.-------• Vertical I /J Trasn Screen r /l H .. r~ SlCreen V). Oser !; I r /I· r~ Typical w at er surface scenario (EJD < 1.5) Scenario where EJD > 1.5 Figure 2: Hydraulic Design of Trash Screen For scenario I, the peak flow Q, critical depth Yer, and energy level immediately upstream of the entrance fa, can be obtained with critical depth and energy equations: Q2 A~r Q2 = and EE = Yer + (1 + kE) 2 9 Tcr 29 • Acr (3.1.a) & (3.1.b) 3 FARADAY INDUSTRIAL/ VAN ALLEN WAY, HMP AND 100 YEAR DETENTION FACILITY Screen for Tash Capture. February 6, 2025 REC Consultants, Inc. Critical flow area Acr, critical flow top width Tcr and critical flow depth Yer are tied to the geometric equations of a circular sector flow, as a function of the angle to the center acr. The energy loss coefficient kE is assumed to be 0.35 to not over-estimate energy losses in a system that will have further energy losses immediately upstream, at the location of the screen. For scenario II, the peak flow is now related to a variable discharge coefficient Co and the level EE according to the rapid flow equation developed by REC from Table 8.22 of reference [3]: rrD2 Q = Cv • 4 ✓29EE with (EE) EE Cv = 0.1 • D + 0.31 (for 1.5 < D < 2.135) (EE)2 (EE) EE Cv = -0.0062 • D + 0.0672 • D + 0.4083 (for D > 2.135) (3.2.a), (3.2.b) and (3.2.c) The previous equations will allow the calculation of the downstream water surface elevation fa (tail water effects) needed to determine the surface water elevation upstream of the screen. Most design tables published by screen providers in their web sites do not take into account this energy requirement in the pipe, greatly over-estimating the capacity of the screen device when the conditions defined by [2], the original document approved by the State Water Board, are occurring. For a given design O (either the trash device peak flow Otrash and the maximum flow 0100), the energy level EE can be calculated. This level must be smaller to the head of the screen Hscreen for Otrash, but it can be smaller or larger than Hscreen for 0100 (it is generally larger). 3.2 Screen Design for Trash Flow Once EE is known at the system where a given pipe with diameter D exists, the height of the screen Hscreen and its length Lscreen must be provided. This is done by selecting an energy loss thru the screen ~Hscreen such that Hscreen = EE + ~Hscreen is a round number. REC selected a screen height of 0.5 ft. Screen height was selected smaller than the diameter of the pipe downstream, for safe by-pass of the larger flow 0100. The area of the screen Ascreen is then calculated with the orifice equation, under the following assumptions: the screen opening is typically 44% of the total area, and the clogging factor is typically 50%, meaning that only 22% of the entire Ascreen (Lscreen x Hscreen) is available for flow. Those screen and clogging assumptions were taken directly from [2]. In addition, the discharge coefficient of the screen Co.screen was experimentally determined from [2] and conservatively assumed as 0.53. This is the value we will use in equation (1.2). Qtrash Ascreen = --;------~::--;===== (0.22 • Cv,screen)✓29 • /j,Hscreen (3.2) 4 FARADAY INDUSTRIAL/ VAN ALLEN WAY, HMP AND 100 YEAR DETENTION FACILITY Screen for Tash Capture. February 6, 2025 REC Consultants, Inc. The minimum length of the screen Lscreen is determined simply as Ascreen/Hscreen, and is then adjusted up according to physical conditions (for example, it needs to be larger than the diameter). This recommended length Lprovided is included in Table 2. The reader should be aware that the screen designed with this methodology will have enough hydraulic capacity to treat Otrash with the intrinsic assumptions associated with the design (44% opening area, 50% clogged area). For Otrash, there will be no over-flow over the screen, as it is assumed that the screen will be properly maintained. Table 2 shows the trash screen to be designed in this report. TABLE 2. Design for Trash Flow Conditions Qtrash D Acr Tcr(ft) Ycr(ft)1 EE (ft) ~Hscreen Ascreen Lscreen Hscreen lprovlded (cfs) (ft) (ft2) (ft)2 (ft2) (ft) (ft) (ft) 0.217 1.5 0.112 0.954 0.171 0.250 0.25 0.46 0.93 0.50 2 Notes: 1: Yer was obtained such that Utrash = Ucr. 2: Energy loss chosen so that EE+ ~Hscreen = Hscreen is a round number (in inches) 3.3 Review of the Screen Design for Extreme Event: Overflow Design Typically, the 100-year flood event should be able to enter safely into the pipe downstream of the screen, and should be able to not create flooding conditions upstream, by significantly obstructing the flow and creating ponding levels above grade. The required upstream level of ponding was designed lower than Hscreen for Otrash, so it not requires further calculation for the design trash flow. However, the required upstream level of ponding HTOr is larger than Hscreen when the peak flow is 0100. Therefore, a detailed discharge equation is needed. When the downstream water level fa is larger than Hscreen, the discharge of 0100 is accomplished thru three (3) portions: discharge thru the screen, discharge above the screen via orifice equation (associated with the orifice area haval x Lprovided), and weir discharge via surface difference of elevation Hror-EE =hamount -haval- The resulting discharge equation is then: Q100 = (co.22. 0.53. Hscreen + 0.6. haval)Lprovided)✓HTOT -EE+ 3. Lprovided(HroT -EE)312 {valid only if EE;;? Hscreen) (3.3.1) Table 3 shows the results of the design related to 0100. Finally, the final confirmation is related with the Free-board (FB). FB must be larger than 0, and it is equal to the invert elevation of the curb opening (or cover if there is no opening, FL) less the maximum level the 5 FARADAY INDUSTRIAL/ VAN ALLEN WAY, HMP AND 100 YEAR DETENTION FACILITY Screen for Tash Capture. February 6, 2025 REC Consultants, Inc. water reaches in the trash box, of FB = FL -Hrnr. From Table 3, FB = 4.156 ft for the trash capture device while discharging 0100. TABLE 3. Design Review for Q100 Conditions Q100 D (ft) Acr (ft2) Tcr (ft) Ycr(ft) Ee (ft) haval (ft) hamount Hror(ft) FB (ft) (cfs) (ft) 2.357 1.5 0.606 1.453 0.563 0.880 0.380 0.844 1.344 4.156 3.4 Summary of Design Dimensions related to the Screen Table 4 summarizes the dimensions for Hscreen (screen height), Lprovided (total plan-view length of the screen provided around the discharge pipe). TABLE 4. Design Dimensions for STC STCID Hscreen (ft) Lprovided (ft) 1 0.5 2 4. TRASH RELATED DESIGN WHERE THE SCREEN WILL BE PLACED 4.1 Estimate of Trash Generation (gallon/acre/yr) Without specific measurements there is no accurate manner to determine the expected trash generating capacity of the upstream areas of the Faraday industrial / 5807 Van Allen Way Project (gallons of trash/acre/year). However, there are many factors in terms of land use that lead REC to use a conservative value: • The Faraday Industrial / 5807 Van Allen Way project is located in an area considered to have a moderate baseline trash score. • The project's land use is considered as Commercial -Not Retail. REC decided to use a local Oceanside study (reference [5]) but not to use downtown values included there, but rather commercial -non retail values. Per Oceanside [5], we should expect about 6.2 gallon/acre/year (commercial, not retail). Per trash hot-spot map [4], the project site isn't located within a "Hot-Spot". Therefore, REC decided to use the value of 6.2 gallon/acre/year of trash obtained from the standard Oceanside Reference. 6 FARADAY INDUSTRIAL/ VAN ALLEN WAY, HMP AND 100 YEAR DETENTION FACILITY Screen for Tash Capture. February 6, 2025 4.2 Calculation of Trash Volume Arriving at Basin REC Consultants, Inc. REC knows the approximate area A (acres) contributing to the basin where the trash capture devices will be incorporated. The following are the list of assumptions for calculation: • Trash porosity n = 0.4: the volume of trash must be increased to account for lack of compaction • Trash Generation constant of TG = 6.2 gallon/acre/year • Frequency of Trash Removal (FTR) of approximately 2 times a year: once before the wet season of Nov -April (highest rain typically December, January, and February), and once after the wet season. The expected volume of trash (Vtrash, ft3), accumulated in between cleaning operations can be obtained with the following equation: A·TG 7.48 • FTR(l -q) (4.2.1) The available volume for trash capture is the area in the inlet box outside the trash capture screen, Asc,plan, (see Figure 3) multiplied by the height of the trash screen: Vavailable = Asc,plan * Hscreen (4.2.2) Table 6 shows the expected volume with the recommended trash removal frequency of 2 per year along with the available volume with the proposed trash screen. TABLE 6. Trash Volume at Trash Screen Frequency of Trash Vtrash Asc,plan Hscreen Vavailable Removal (FTR) (ft3) (ft2) (ft) (ft3) 2 / year 1.973 6.75 0.5 3.375 7 FARADAY INDUSTRIAL/ VAN ALLEN WAY, HMP AND 100 YEAR DETENTION FACILITY Screen for Tash Capture. February 6, 2025 NEW BOX DESIGN 3.5' AREA FOR TRASH COLLECTION 1.5' r =0.1 5' I Area inside trash screen REC Consultants, Inc. 2' 0.167' 0.167' I I I 1' 1' 18" Pipe ~~ Note: As there is no curb opening, no cover screen will be placed in this case . Trash screen should be built with a height of 0.5' Figure 3. Box Dimensions for STC Placement I I 8 FARADAY INDUSTRIAL/ VAN ALLEN WAY, HMP AND 100 YEAR DETENTION FACILITY Screen for Tash Capture. February 6, 2025 5. SUMMARY REC Consultants, Inc. The trash screen will be a 2' long -6" tall screen in an inlet box at the entrance of the corresponding 18" storm drain pipe. The screen will be subject to trash cleaning as follows: • One time prior to the rainy season: October or November • One time after the end ofthe rainy season: March or April 6. TYPICAL SCREEN MODELS Appendix 1 shows an approved example of a screen. No specific manufacturer is recommended, as long as the screen to be installed is listed among the State Water Board approved list for trash screens, but with the dimensions designed in this report (and not with the dimensions recommended by the manufacturer, unless those dimensions are larger than specified here). 7. REFERENCES [1] Hydrology Report: Drainage Study for LOT 74, C.T. NO 85-24 Map NO. 11811 S.M.A.C. VAN ALLEN WAY, Kahr and Associates, dated: March. 03, 1992. [2] Technical Report: Connector Pipe Screen Design. Full Capture TMDL Compliance Screen and By- Pass Sizing Requirements. County of Los Angeles Dpt. Of Public Works. April, 2007. [3] French, Richard : Open Channel Hydraulics. McGraw Hill, 1985. [4] Trash Free Carlsbad: https://storymaps.arcgis.com/stories/829857179b3843bfac18382f4a8edf65 [5] DMAX Engineering Inc.: City of Oceanside: Compliance Track Evaluation for The Statewide Trash Amendments. July 2017. 9 APPENDIX1 TRASH CAPTURE SCREEN SAMPLE Important Note: The system attached here is accepted by the Board, but the capacity calculation shown in the ADS tables is hydraulically incorrect and over-estimated. Screen dimensions should be those specified by REC detailed hydraulic calculations and not those inferred by tables of the Appendix included here. Those tables are not in agreement with the LA County CPS Technical Report submitted to the State Board, and REC calculations follow in detail the CPS Technical Report methodology, including the proper determination of the tail-water conditions downstream (water elevation at entrance of pipe). REC recommended screen sizes are larger than those obtained with ADS tables. As REC is the firm responsible for the design, the size determined by REC report takes precedence. REC is not responsible for potential system failure or flooding upstream of the pipes if the screen size installed is reduced to ADS levels. 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: □ Specific maintenance indicators and actions for proposed trash capture BMP(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) □ How to access the trash capture 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 trash capture BMP and compare to maintenance thresholds) □ Manufacturer and part number for proprietary parts of trash capture 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 Marcil 2, .2!0r.2.1 Mr. Leo CosenU11i .AJOS, lnlle·t f rllters 24137 11'\ltln Street Napervii tie~ I l 160564 camomiar State Water Resources Dontrol Board rnvusion of water Qu my P_Q_ Box 100 s acrame11ro~ CA. 958.12-o □ IRe: Trash l"lieatmernt Comr:ol Device Appl1icationfor AD s. 1CP·S ,c onnect,or P1ipe· Scree·rns Oear IMr. CosenU111, Thank you for 1he oppo unity to s1..i'bmit our aipp icati:on for U1e ADS GP S with Vector Co111rol pro,yjsions. lnifoflTiaUon is presented and organiZed in a.ooordance wtttl the Tira!Sih T1reab'nent Control Deviice ApJ:Jlication Requirements. P,er 1he applicatiio1711 gutdeJ1nes the mllow~ng document is 'bro ken into a sec:Uoms anal an append ioc: 1 .. Cover Letter 2. Table of Contents .3,_ Phystral Descliiptto:n 4_ lnstallatio1711 lnfmmation .5,_ Operation and ~intena11ce 111mrmation 16_ Vector Control Accessibilly 7 _ Rel!~ability lnformafion ft Fieldlllab T estingI lnfOITTil.0tiOll and .. An~i~Sl.S Ap;pe11dix Th.ank. you for 11"eviewing1 this application. if any additional infonnatio:n is reciuired please contact us as needed _ Joseph Chylik, Product DirectoJ to:r water Treallment Advarmed Drainage Systems\, Inc ADS Inlet Fl1te.r cfiVi1SLOn 1. COVER LETTER ADS llnliet Filt.ers .24137 1'11th S,treet ~ apervilile., IL 60564 11.A.. Genera1 desct1'1iption ,of the de•v·ce . Toe ADS CPS, also referred to as a Connector Pipe Soreen , is a prefaDficatedl trash retenuon screen manufactured by Adr'Vanced Drainage Systems (ADS). TIie CPS is inserted into selected catch basins and mounted in front oHhe basini's outlet pipe . llnstaller to determine which CPS Modlel to instaUI ba=,ed 011 1. f low Rattngs, 2. Bypass Requirements. 3. Location of Oonnector Ptpe inside the catc'll basin. All ADS CPS are comprtsedl entirely of 304 sta[nless steel andl brought to the fietd pre-configured for easy installatim:i once product selecfion rs confflmed. 11 .. B .. The app,licanf's, ,contac.t 1nlom1ation and locat·oni. Southern CA a11.11ho11Jzed ADS representative: Stephen Denny (steph.en.denny@ads-pfpe.com) ADS Allied Product Manager 2168 Scho arship Irvine, CA 92612. Ph. 949..:304-3087 Northern CA a:utflollized ADS representative: Soott Van Meter (soott. vanmeter@a:ds-pq>e.com) ADS AJlied Product Manager 762 Powers Ave. Clovis, CA '913619 Ph. 5.59-5,77-7545 ADS oontaot at the mamJlifaat.urjng racility: Tyrer Langel (tyler.langel@ad:S-pipe.com Applications Engineer, ADS Inlet Filters 24 137 "11 111:1 Street, un it A Naperville, IL, 60564 Ph. 630..:355-3288 ADS exernt1ive oontact at coirporate headquarters: Josept1 Chyl1i:1< (ioseph.chyHk@ads-pipe.com ) Pmd.uct Director for Water Treatment 4640 Trueman Blvd Hilllardi, OH 43026 Pll: 600 821-67110 1I .. C., The owner oli manufacture~s website w'.ller,e the device can be found on th,e intem e•t. lhlUps: ll"IJiMlwj nletfilters. com/p iroductsJcon 11 ector :Qi,pe-s,creen-cps 1I.D .. TIile device's ma111ufactulijng location. Page I 2 Alli ADS CPS are des1ignedl and manufactmedl at the .ADS lnl'et Filter facil ity in Naperviille, IL Tt11,ey may ,IJe stoaked local I¥ at 5 ADS locatjons in CA and at any number of over 5,000 diistributors 11attonWiide_ ADS Inlet Fille l"S 24 '13711 l ih street Naperville, II, 60564 t.E. A brief summa,ry of any ffi eldtlab te.s.fng resu1:ts that demonstrate Device's ftmction1s as des,cribed within t,h,e appli,cation. Numerous studies ha,ve been coru::lucled in California regarding1 the effectiveness oi a 5 mm dia perforated steel screen preventling: trash fmm passingI into a catch basin connector pipe. The focus of 1he ADS CPS development has Deen in the area of improved streng,th and reduced! instaJtatlion tiime using pre-oonfLgured desiigns. APPENDIX F highlaghts some of the strength: testing cornfucted at .ADS .. 1' .F. A brief s11.1mma:ry o·f Device limitat,ions, and operm:iona'I s1izing, and mia•intenance corns idleratio ns. The ~OS CPS is preconfigured in comprtance with 1he .basin size and ou1Uet pipe rocati:ons. Once !nsta u:ed, the CPS will. 'retain large volumes of trash and sediment inside the catch basin rather than being conveyed through. the stormwater system .. Debri,s th.e size of cigarette butts and larger iiS stored ins1ide of the catch basin and regularty removed with a vacuum truck:. 11 .G. De.scriptiorn or list o.flocatio:nis, 1if any . where Device lhas been installed. Thousands of ADS CPS have been successfully instaHed through.out Galifomia and the Uniit:ecl states. CA installations include Simi Valley. Camanllo, 'EJI Segundo, Beverly Hills, contra costar, Newa~k. Desert Palm, Pomona, Moreno Valley, and San Dieg;o_ 1.H. ,certificati on Clause .. l certify under penalty ot law that this document and all attachments we.re prepared under my direction or supervision tn .accordance witJ1 a system des;gn.ed to assure that .qualified personnel properly gather and evaluate the in,formation submitted. Based on, my inquiry of lfle person or persons that manage the syslern or those persons directly responsible for gathering the information, to me best or my knowledge and belle(, the information, submitted is,. true, accurate, and complete. l a.m aware that there are significarrt penalties tor s.uiJmitting false tntormauon including the possibility otffJ1e and imprisonment tor kn·awing violations_ Joseph Clly1ik, Product D,irectnr for water Treatment Advanced Drainage Systems., llnc ADS Inlet Filter diMs.to n Page I 3 2. Tab le ,of Contents Page# lnrb',odlucf on 1 1 Cover Letter Section1A 2 Section1B 2 Section1£ 2 Section 1 _o 2 Section 1_E 3 Section1F 3 Section1B 3 Section 1_H 3 .2. Table of C,ontents 4 3. Plhys.ica: DescripUon Section 3A 6 Section3B 6 Section3£ 6 Section 3 _o 6 Section3_E 7 Section 3 _F 7 Section 3_G 7 Section 3 _H 7 Section 3J 7 Section 3_JI 7 Section 3 _K 8 Section3L 8 4. Installation ,Information Section 4A 8 Section4B 8 Section4£ 9 s~ Operation and IMla~nt:enance intorma:fon Section5A 9 Sedon5B 9 Sedon5_C 10 Sedon5D 10 Sernon5_E 10 Section 5 _F 11 6 .. Device marintena.nce andl vector contro' accessibility• Section 6 _A 11 Section6B 11 Section 6_C 11 7.. Reliab'i i·ty lnfornnation Section 7 A Section 7_8 Section 7_C 12 12 12 Page I 4 8. Fliel.dllab Ties ting lnforma.n:oni .amt .Ana1;ysts Section BA. 12 Section 8 .B 12 Appendi,ces APPENDIX A. APPENOIX B. APPENOIXC. APPENDIX 0 . APPENOIX E. APPEINOIX F. APPENOIXG. De.si;gn Criteria and Sample Calculations Specification and Desagn Drawings Extens'ion Panell Work. Instructions Photo Gallery: Hing,ed Lid I Before and Mer Maintenance Vector Conlml Accessibility Details ADS CPS Load Testing MVCAC letter of VelfifitaUon Page II 5 3. Physical. D,escription 3.A.. Trash capture Tile ADS CPS ensures th:at all parbides greater than or equa11 to 5 mm are captured! by constructing the filteling1 screen from uniiformly punched stainless steel with 4.8 mm openings . lhis ensures that no particles larger than 4.8 mm can pass by the filter. 3.8.. IP,eak Flows/ Trash Volumes. ADS CPS are built to fit 11arying1 catch basin sizes, depths and outlet pi.pe locations_ The screen length andl height are detern'l<ined by the amount oHtow required to pass relative to he cakh basin width. The CPS inoludes a protective bypass lid that prevents trash from falling1 behind the ma1in base screen directly into the outlet pipe. The bypass height must De sized to pass a 1 o year rain event. 3.C.. Hydraul,ic Capacity Please refer to Tabre 1 ilil seciion 3.'D. for flow ratings through standard size screens as well as ·Dypass ratings at vanous lid bypass heights. Rerer to APPEN DIX A for the hryd'raulic rapacity calcui:ations and design cliteria for the CPS_ 3 .. D·.. 1Compa1rtson Table Table 1.: Part #s and fil:ow ra!tings of standard CP.S, screen1 leng,ths and heights, at varying bypass heights. SIZl~JG TABILIE H, (Ip H, ™ Iii, ti,_,, 3-..93 1 ii.Ill 6 i.1 7 9.0S I 6 10.36 1 11 5 6 12.95 Dt!lemiine OJ.'i m re.lJ!ll C.1rh w n De¢6 bypass heig • -• 3' wid;;! x18 i;rl. Cucto I fl!lh5 nd . -2. 13.19 1US 21 R When selecting! the proper CPS one must detem1ine the one year flow rate Mro: 0 1-1 of 1he Catch Basin (typically based on CB width), and verify the Sc;reen Flow Rate ·Qscree11 exceeds that number. Tue Bypass .Rating Ot,ypass must meet the Max Om fur th.e catch basin. This applies to any diameterpipe, which are typically sized to meetthe 10 year0 1□1flow rating. Withr ihis in mind. he installer must choose or verify the minimum bypass "IB 'height for tlle chosen base Mode . from the table, !Nhich alreadiy accounts for 6m freeboard .. The CPS lid:s are onty required when the connector pipe iis located below th.e curb line and flolil coul'.d lalll behind the CPS . I Page II 6 H ... ;i, 2C' ]I} 3 .. E. Design drawings tor .au standard Dev,ioe sizes including dimensi'ons and altem.ativ,e· configu1r,ati ons. Refer to APPENDIX B for all design drawings as submitted to and approved by lA County_ ADS has standard shapes and screen lengths but .altema.tive oonfigurations are available to avoid manhole openings and other obstructions within the catch basin _ ADS supplies a Quid< Rel'ease optton ,also shown iin APPENDIXB_ 3.F .. Alt:ema.tive Configurations ADS CPS its a rolled! screen 1111at may be customized iinto various continuous shapes , suC:h ass or z cuwes, to avoid manhole openings wlh i:ct1 would make catch basjn entry difficult The screen may also be suppl1ied in a fliat panel configuration 1Nhen necessary, but this is only in situations where there are no other mount1ing1 options due to space constra ints .. See photos in APPENDIX o_ 3 .. G. lif the Dev,ioe :is de,signed with an ·internal' bypa,ss, ,explain lhow the bypas:s o.nl.y ope,rates for volumes greater than tlhe design stonn. The bypass region of title CPS is the area aDove 1he base screen panel andl below the protecti1ve lid_ The stmmwater may travel over th.e !Jase screen and enter the bypass a.reai i1f the screen openings are completely blindedl by lrasll and d:ebrLs, or in 1he case of a slgniflcant min event The bypass d'.esign criteria and calculations can be found in APPENDIX A. The engineer iis responsible for confim1ing1 the ultimate bypass capacity of CPS exceeds tile maximum design flow to the catch bastn for a chosen rain event Tile bypass area may l':le expanded to meet the engineeirs design requirements try either increasing1 screen length (L), or increasing1 the herght ofthe bypass between base screen panel and tt1e protective lid_ 3.H. Condlitions under wlhiclil the devioe ire-introduces previously ·trapped trash. The CPS r11ay all:ow trash to enter the stonn conveyance system behindl the screen if pushed up and over the bypass area _ Typ:iieally flow coming off the street will! enter the catch Dasin from the top andl CO"l)ress previousliy trapped iras:h, however there is no g,uarantee that this trash wonl float up and over U1e CPS base screen paneL 3.1. Cailibration Feature Tile ADS CPS are supplied with slotted mounting flanges that will help position the screen fl uslh to the catch basin floor if sloped _ Should there be a gap la rg.er than 5 mm from the bottom of the base screen pane to the catch bas1n ll'oor then an extension panel may be custom cut and: fastened to the CPS usiing stain lEss stee I Tel< screws _ See APPENDIX c for Extension Panel Work II nstructions_ 3.J. Photographs, if any, o•f pr,e-and poist-'installation ,examp,les See APPENDIX D For field! photos of the ADS CPS _ Page I 7 3.K. Ea.ch materi.a' and materia.l gr.a de t1sed ·to construct the Device. AU FLEXSTORM CPS are comprised entirely of 304 stainless steel Tue active filterningI oomponent is UGA perforated 304 stainless steel screen ing is uniforml1y punched with 311'6. dia_ holes (4_8 mm) in such a pattern that the screen has 50% open area and retains any partiides 5, mm or larger_ Reinforcing 1 _25 x _ 5 x .. 5 U-chiannel stifteneirs are made of 12GA sra[11 I·ess .. All Mod1e:fs are supplied •wiitli 1i3GA vertital upl'ight mounting brackets w.llid1 accept qty (4!), 3l8'" x 3" minimum stainless anchor bolts_ Alli bypass l:ids are sup.portedi by '16GA 304 staiinl'ess steel mounfing1 bradkets vh1ich req1uire a qty (,2) 3/8" x. 3" min stainless anchor bolts_ 3.L Es,ti11J1at,ed des.ign lite ofthe De,vloe•. The 304 Stainless steel oomponents in llle ADS CPS have a 25-year minimum design lnfe when used! jn stomi water ap;pl:ications exposed to moderate levels of salt and 0th.er naitura:11,y occurring roadway con,taminants_ The fabrication or bend'ing may stress or expose certain surfaces sliightty but not sig:nifirantly reduce the desrgn liife of the st:alnl'ess steel .. llie l'oading fames a.ding on tile CPS have been tested wi:th considerable safety factor_ 4 . lnstaUation 4.A. Device installation procedt1res and consider.atiions. All ADS CPS are brought to ~he 'fiield pre-configured for easy assembly onoe Product Selection is confirmed; All 'Models a:re srupplied with vertical upriight mounting brackets which accept qty (4) 3/8" x 3" minimum stainless anclhor bolts_ Alli bypass llids require a qty (2) 3/8'" x 3" min stainless anchor bolts_ Mounting brackets a.re equipped with slotted holle.s to a111ow for varied contours on walls and sloped floors_ Installation of Base Model= Drop CPS through ~he manho.l'e open ing_ Position the CPS evenly spaced around the connector pipe ensu1ning a minimum of 4" spacing away from any comers_ loosen the bolts in the slotted holes which connect the screen to the upright mounting brackets until. the bottom ~s flush wi~h, the floor_ Tighten the boUs and mark. the hole locations on the wall for the staiinless anchor bolts_ Drill holes and hammer the bo!lts in place and secure the CPS using staii nless nuts_ l11stallation of Bypas:s lid: II the bypass llid us required verify the minimum bypass hejght needed and mark the "B" bypass height location on the wall di redly above the base up:fiights. Lift the lid in place and mal'k the hole locations for the lid mounting brackets_ Drill holes and hammer the bolts in place and secure the lid witih the stainless nuts. 4.B. Des.cription of devi ce irnstal.lation Umitations and/or non-standard device installation procedures .. Tile ADS CPS has limitations in sllallow catch! basins tlmt do not provide adequate space fo:r entry or insta:I1:ation. An alternate full capture device selection and installation may be possible using automatic retractable screens or ADS FTC inserts for grated catch basins_ Page I! 8 4.C. Methods for diagnosing and corre-ct!ingr instanation en-ors. If the bottom of the base exposes more than a 5 mm gap then an addibonal base face strip (extension panel), may be fastened to the base channel using sta:inless teik screws or riivets. This base face sbip matoh es the length and contour of the primary base_ 5 .. Operation and Maintenance lnform1ation 5.A. Device inspection proced ures and ~nspection frequency consjderations·. ADS CPS inspeciions should occur three times per year (every tour months) in areas with year--round rainfall . Wall markers may IJe usedl to determine the level oftrashr and: debris accumulated in the catch basin as shown in these photos. 5.8 . Maintenance f1reqlJency considera,tions r·e·lated to, the device's llydraunc capacUy at various leve'ls of trash capture vo,lumes. ADS advises that catch basins be cleanedi out at least 2 times per year andll'or ·fr debris has filled :above a 40% level inside of the catch basin. Si,tes with large amounts of foliage, high sediment toad:s, or smaller CPS devices might need to be deaned 11orre freq;uently_ As wiith all sl:01m water BMPs, inspection arnd maintenance.must occur 011 a .regular basis or the filtering mechanism will be over1oaded and rendered useless .. In such a case, the catch basin may become tompJetely filled ·'!Nith trash and diebri:S lowering the flow rate and retention rapacity of the CPS . Any trash entering the d'rainage structure may possibly escape.direcfly into the sewer system-over the to:p of the CPS. Page II 9 5.C. Maintemmce prooedu1r,es , includ.ing procedures to clean title, tirash ca;pture screen .. ADS sug:gests that 1its CPS be ma inta ined per thfs set of industry accepted conditions_ Description of IMaintenanoe Actions: 1 Clear trash and debris located immediately in front of cum opening or stde open:1ng of the catch basin and on top or between meta'II grates of grated bastn _ 2 Remove Veg:e-tali:on growing a.cross and/m blo-dk.ing the basin opening1_ 3 Remove all Trash andi debns and vegetation from inside th.e Gatch Basin _ 4 Remove T;rash and d'ebrbS in the connector pipe opening, upstream m dolNJlstream_ 5 Remove all Debri:S that coviers Ile perforated openings of the cmmectorpipe screen 6 Ensure there is no standing water insid:e of catch1 basin ~ndicates the deViice i,s not properly d'mining) Trash andl debris shall tndud'e, but is not llimit:ed to, mud , vegetation, and g:arbage_ Upon completion of a deanout operation at a catch bas1in and befme leaving it, the Contracto r sllall sweep the top surface .of th.e catch basin and smroundin:g area, andl shall! remove any trash and! debns resulting urom tlle cleanout operations_ No d'ebris is to be left at a catch bas.in for future pick-up_ Method of Removal:. All! trash and debris required' to De renoovect trom the ratdl basin shall be removed in a manner to be determined by the Contractor_ Tlhis ran be done by hand or with a truck mountedi vacuum _ If entenng1 the catch basin ensure tllat l'ocal confined spiace entry procedures are foll'owed_ Th.e Contractor shall not allow any trash or debris to enter tlle connector pipe or ma.in llne as a result of U1e cieanout operations_ Debris Disposal: Alli trash and debris remo\ledi under this Contract sha:11 beoonre th:e property of the Contractor an.di shan be legal liY disposed of away tram tile CB si1tes _ lhe Contractor is responsible for proper disposal oi the trash and d:ebris, incl.uding obtaining approvals from all jurilsicl totio1rml agencies, as appl'i:rable_ The contractor shall be responsibte for contacting and ooordinating1 with local An imal Care and Con.troll for pickup, and disposal of dead animaliS_ Total maintenance Urre is approximately 15-20 minrnes per basin_ 5.D. Essentiaj ,equipment and materials fof' pr,ope,r maintenance activiities . Sugg:estecl method for maintenance is urtil'iiz.ation of .a vacuum tmck combined with .a power wash.er I high pressure hose_ If a vacm.1m truck is not av:a[llable th.e ratcll basin may be cleaned manually with a shovel, trash can, and broom_ 5.E. Descnp,tion of the ,effects of deferr,edl maintenance on device sw-uctural :integrity., p·erformance odors etc,. In U1e event of deferred maintenance, the screen openings may become blocked creatfng higher amount of lNater pressure across the entire screen_ ADS has a reinforced screen panels tlla:t are-prestressed from the rolling process during manuractunngi_ Thjs gives the ADS CPS muc'h higher strength rating per square foot surface area vs a typical nat panel_ Flat panels screens without reinforced framing1 may result in a cave in raiilure as sholNfl 'below wi1h a U-shaped ADS CPS .set in front of the fllat panel for comparls.on_ See APPENDIX F for AOS CPS Load Testing results_ Page II 10 5.F. Repair procedUlres for tbe devi.ce s svuciucral .and screening components. ff the perforated steeIr OPS screen is damag1ed or dented, it will still function prov1d1ed 110 opening exceeds 5 mm. l n the event the system is d!arnaged to the poinit where the base of the CPS d:oes 11ot sit flush with the catch basin floor, the contractor may fasten an extensi.on panel using sta1inless steel Tel< screws _ If the damage is beyond repa1ir, it is irecommem:l:ed to replace the entire unit 16.D. Device maintenance and vectior contror accessibillity. 6.A. The date ·the device a.pplicati:on was. submitted for vector contro:I a.ccessibUity vla. emait ADS CPS vector control desi.gn details were submltted to MVCAC and the Trash Treatment Control Committee OJil March 17, 202 1 _ G.B. Des.cription and/or video tha:t: demo:nistrates how m.osquao vector control personnel can readHy access. the bottom. of ·the storm water vau tt andlor dev,ice for viis ual observation and mosq ui,to, treatment Personnel can: administer vector control treatment to the ,bottom of t11,e catch basin ,by flippingi 1he hing.ed protectiive bypass Ud .Of the CPS up· to where it rests againsUlle catch basin ,alt lh1is ·wtn provide a dear visua:lr to the .imr.ert of the connector pipe and vector control perrsmmet can administer necessary treatment The lid can easily be fliippecl badk. d'own once .complete_ G.C. The MVCAC Letter of Verification as an atta.cllmenUo the appl.ica ion when. it becomes .av.aila,b·le. The MVCAC Letter of Verification fs attach.ed in Appendix G_ Page I 11 7.D ReUabrnty Information: 7. A. Estimated design l:ff,e• o,f device ,components before maj1or ovelliha:ul. As mentioned! in section 3L, the 304 Stainless Steel components rn the ADS CPS have a 25-year minimum desfgn li~e wnen used ill sto.11111 water appl1ications exposed to moderate levels of salt and otller naturally occurring roadway contaminants_ 7.B. WaR,anty informati:on. The ADS CPS are warranted fm a peri•od of 5 years from the date of ·nstallation_ Replacement parts wi ll be suppliied at n.o charge provfded: the inserts \vere instaHed property for their intended use as a fiJII trash capture d:evice. 7.C. A1pplicant:'s customer support. ADS has a nationwide support team witll local! field irepresentatives and product m:anagers .. The Product Managers are steph.en Denny (stephen.denny@ads-pipe_com ) in southern CA andl Scott Van Meter (s,cottvamneter@ads-f)ipe .. oom) in northem CA 71lle ADS FLEXSTORM Inlet Filters division can address any engineering and design q;1.1esUons at 630 355-3288 or info@inletfflters_ com. ADS website: www.ads-p;ipe_cornfen ADS Inlet Fi l,ters website: www.i11letififters.co:m a. Field/Lab Testing Information and Analysis 8.A. iFor d,ev1ices witlh 5mm screening, any avaUab e fte'ldilab, t,e.sting info:rmaiion tha1t demonstrates the devi:ce functionality and perfonmance .. ADS ·has i.Jased our designs and performance criteria on the standards set. by LA County through their Technical Report presented the Water Board ancl publiiiShed in April 2007_ Yo:1.1 may find thils report on li ne at https :Hwww _ waterboards_ca_gov/!osa ngelestwater issues.tpmgrams.llrndllfcc/la %20county%20full%20captur e%20req;uest%20pa,akag:e_pdf 8 .. B. !If the Device does not include a 5 mm sor,een, adequa.te fie.ldJilab ·t,estiing informatiio:n th.at demonstrates tile Devioe captures trash particles of 5 mm or,greater. Page II 12 APPENDIX A. l!)e[_emtln • byp ~ ls3' w1Cle t:i.&aml Des1ign Criteria and Sampte Caloolations SIZING TABLE Screen L,man C?:; l'lQl'f~(.'.UWlOHS ifflS,,V,IJJRJABLf BYPASS lilEltiiilTS O'S 1.ara arc ~ l&lr rzc wrt11 ii prc-nt Len~ at en lll. l~h~~t,.t gfll, bfl] i i5tl1L:r· l~w dto canliirrn f . •h• tati,jl ~ for llue CPS ·.ith Lid d•si~n eri::e,;,IJ5 tne M3K ~,,, tor a 0em CB wi.mi. T e i t31lle Ii)~ ;li'ia,1, ri:~iJ 11 'lf<= lforthc warillu, ,{bw ,i,s fleighl,;) Diirflrr.lnllt1;tbi.o or u b-,'tJ!e:'ii•iiiqtJ3ilDfl far co i.M"ltlli dllt1artiv ~ Oirill"" = Ctm,a,/"&1~" .,,f 2gH «.,;..-• ..6 /meffi:ien I S,•3U '•' A__. •I!. iil'f.anil1 1:111.- 111: d':i;plh,af Ii'"~ Ui aid cit CPS IJ "" cm 5 ll. 9 5 17.S!l 5 ll.9S Asrume 111e lliwe 3 7' w1a~ G.tcl'I t:<asm wltll a dep ~ 3.5-' al'ld lll'' connectcr pr~. 1he r.ta,:i: Q.j L!CfS· >il'fiile MaJ4 Q,.o Is 5.~ CFS:p,.2r tile II. 'lllQGV .stoovta tothe ri~ht. Sel·ea e ~PliDJlnaile 5CfEei'l t,o pass 111~ 1 yei!r rJW ther-1 lile-temrmitM rim m b,,jpass he.i;;M rl!Q ifl:s~ t:> pm ttie 1D ve, j]aw. Th" 3Lt!!IH'i scre,en {hi.;: igltl..J in e;.irttn) P"""" 8.Sl 'Lf'S f~r•"""""cinl!fh" 1.2 [fS '""I irem I. llicccm:!'i l!to lhi, li!i11g 11!1:i t~ un.~. • 1 i,,,µ,,u 3.5.2 er-;; W.illi, 6" .~ llfi trc 11-d 'Ill rtfle. Fico.!; by-pa!,; eG1'Jatl!Llll Wflith IS ,;,am lihilfi ihe re,q_ulred 5.5 CFS ma~lmwn Ill :r 5Ben l:!y t . 7' .,.,,,,c[ catch IJ-8111. The b:YJ>.a~ i; ,::a\:o.Jlat!!d as fo 111u: o.....,,,.,= ,,,JTjjif -.. • Jii [onfic! ((I~ 1er.t} g= 9'1.2 ft/i' s:n- ,!j{''fr02tw- cm wet,,J ·= o....,-.i;." .5 \' -'5'.52cf, ~,,, 10' .'D' o, 11nd t•n r"" ni rHrtl: u rdK.IM'I~ b'J'u .o.umr 3.3 Page I 13 Appendix B. Speciftcation aru~1 Design Dra\!Ving s P~Ol£CTIVE 8YPASS LID NG l4 GA :, MM PERFOR.0.17EO j GPS L 5 Afffl.ES5, 1, 50~ OPE!i ARE,>, SIZIING TABLE CP Flow Ratesb\r'Mooe4, screen 5creea A, I ,11IHtt O...,...,f[()'ij Lel'ISl1i Ht!li llr atar1:11nnl Ra1ie lcfs) 3 18 1.M S..72 4 18 i.45 U.84 s 8 .;lirn:t 14.% S,00 CPS IJ ADS FILEXSTOR ~: CONNECTOR PIPE SOR.EEN (CPS) '..~8.~E AOCl'IIOR ,1foLTS Sl:.OTTm· HOLES FOR Stol'IED C:i'<TOI BASIN R.OOR.S CPS U-EXT B, ti11µa:ss B lby'IJ<l55 i l'-'l'P~ S (bv S..i;b~i}-as.s = 12" ~\,-i,r;, H~ Qi! I-la Q.1.2. ... ,~ 3,~_3 6 S..52 , t S.ll,i 6 i.i? 13.l~ 10 5.24 8 7-3S 7 9.08 6 11).31) 17,58 lO (;,!';'le, 8 919 7 I l ,;ic; 6 l.:z,9:i; 2'l , • fl JO Detem'llne CPS.1n\iodel: n. n,ber bas.ed on screen let gl:h and ht;!,ight -bypess height -and screen shape.-For example Mode.I 3l181!{..8-U i.s 3' vaide x :llS" tall, has·8-" b"y•pass. height, and is "U" shaped. Oustamffe.ngtlu and heights are available for a catch bes·in. 3" ,(TYP) 3• BASE SUPP'OITT BRACKET (iT'i'IPl CEITTER 5liIFFENER El.EVATlON VIEW' ~' -14GA 1 PERFOAATl:fl SCREEN· 50·% OPEN ----7 ~ L 14GA5, M R ORATED SCREEN150% Cf'EN ~ 1. L 1-!ATERJAI.S ,r,,.'l,f "l'rPE 30'!55 tJ LESS OlHEF!Wl5E NOTED 2. CE\ITER. SITFFfNEiR REQutR-60 WH,E.'N S .i!!: '3'-11' 3. CENTER. STlFFENE<R WILL BE SMT WELDED @ 4" C.C. (Maic), TD P\ERf()RATED Sf'__.A:EEtl 'I. EXTEN:!;100 PAN,a.S t!R:D fOR: L,t,JEVEr4 CATOi BASJ F\.OOR. '5. 5CRU!45 LE5S lJ'iAJ)l 18 ,r,u. U OT INICL.LICE A cH~N El ii T t-tlD-HUGH'f ,..,..----J/3' e<. '3 WEOOE ANCJ-IOR,. '2 P8l: -_omm.·no rnr) 5m:r'" 1-1,-s·• t'll:X BOLT. !/-/ASHER.. AND LOCK NII.IT (W't J SECTION l<-A r~.T..S. ~-------L -------- SEE kPl',EflDJX APl'BlD'IX A-1 At.ID a>s S!tZl'tlG TABLE .FOR Hb, Ii!., &. l VM.UEJS St:CTlON TOfl V.IEl'i l't.T.S. Vlf:YI' N'<III ---.5f• TOP Al◄D IUTTDM SC!l!EEN IIEfilJ PR. Fll..E '1/lEWC-C tJ.T.S:,. .Ill El Page II 14 r (W P } 0 'lle'l~I 1114"'> 'i< 1t2" 1:;)GA U..Chair,,_ S ·rr-• -~Pl --..... ____ L --- NOTl'g'.- 1 ... ~ Are Typo, 304SS U'11ee oth<,r.o,;,.., Noted 2. A Horizon And V.,.;J SIJM,n<,B sh.al e., Spa! Wt!ll!lloo G -x: (Me:< To Cl seree 3. 'For C!r1ci'I 89,!'i Ul'li,1,lllll Floo E:•ir,.rt,:;ltri p..,.,, Qgball s,,., Sh. a. ~----,= p) --1'1GA5<Jn - 11=!:<W<~,;I 5~ ro¼OiP-n .----/~ II A , ) S,116" ------ '--1 112" -x 1 11.2'' i\ "Ha 13GA Mawntinll Bratket (T-fp.) ---1./IGA 5mn, Perfoc21t..d _.,, :ij~r, CiQ'la Ojl,ar, ELEVAllO 1111:\i '!Iii. 1 1"4" >; 1(2"" 1/7'-' Y.2GA U.CJ nnel su,r,;n {fyp.) 1Mli\5mm l"illf1'orJl,;,od &llrN11!i0% Op1m ~ EJAI ~.T :;:. All HIOinlli _ And Ve ' S1i . rs st,all 81i! Sperl 'Wl:Jdad @ 4''C.C ><) To ~,ad Scnicrt al C~t<Jr 1!f l1i'lf IIIQID!Kl \111111!11 :t.3',,V' ,,i Top An~ Ce!! Base Su ffi.,;!n S a: :r-O" :Y' Ba!!e Sl!l,:l ',8 eke! Al R llltlFbfAUUrill:9 5,.-; • I" HbX 8 l w -i--. AJ1d kn!, 2 foe• Comee on t 12":ti 1 11 13:GAM ·,..; ~!TIii) 1-------:w---- ~ N.r.s ~----------·L --------- PlANYLEW TS. Page I 15 .Appendix c _ Extenston Panel Work Instructions EXTENSION PANEl WORK INSTRUCTrONS Use., !'frmdi,-,s -..f.e.et t a a ,t the P"'"e,l .,fter saibi<i~ di.e pa1;em ol 1.he flc,ar 0,1 rn'-' to~ p:,rti:c>n ahh_;, p<i,n;,1. (t1l tha pattam out ;ind now I e•.-er3e il. for itl~t.i li21c.ioo. Use I) 01.•id.:-il :.s Tek Sere,,,, to :se.:u,"" lt,i, ;,',:te, ,~ion µ21nel to the ,tp:;,, for ~cl< l¼le.ai€1 ( "s~ <Jllll)le ,,\.i.t be pl~ b .. J,ind d,e ,c....,.., if ....i~nsion p•mel ffils more dlfdn "' ;!~ g,,p. FOIi ~t,andard installaticm ose l l»-.i.~ anchored. int-0 It>!! flcor a~, slJ.own I th f,;teml.oo Panel DHalP d~wlng, T.o':i,Crrbe th b,;,;;in flo,;;.r p;i.t'i rn onto 'h11. mn·;ii;,11 p 1111l u ~8-,1 ;p11,;er •or our :._,;ribine: -0<01 c; ~hi;,Wn, w,th i! mi!rkoir $~bil'fth"',;:oott>ur on tt,,11 t~ P-QJ ion ol' th~ ~>rt"11,;fon p.iliwl. C.\lt tlioi• tin• ,o.fFwith ;r _p'Qoctiiblo11 w h•ff iftndini tooJ. 1 ev""ri!e h pao~f cu &Ide· down whi h d1ould mawh th.e. fl oon n11 con our pef c; ~•. ilwt.a If th,; t k ~I;.{ ,11 o:m the· op, po.rtit>.n of tllei extens10:n ,:ianel conne::ttne; ~o the ·ma·1n CPS -scsreen, Page I 16 lf'.,.,,Elolonliil>') Fir. - 1'!1.!lA!:hmS..tc.ial9'!! 5,M,>n~[lpft BaoS~ • _/ &loOU-Mll.,_,., '2"•2"•~ UOA!mft l¼'"'•""'--8-' 1Jr3<1ol 'Ll'I. N."l'.S. A _J A EXTENSION PAN, WORK IN'iSTRUCTIONS LEVI\.TtON \IIBIV N.T.S.. , ~ J!lrJS.IGI]''" ~~lt'i■~I _.,,,.._ l4GASmBll'tilanm;l ti~n:.0-:i.Op.eft Page I 17 ATTACHMENT 3 City standard Trash Capture BMP Exhibit [Use the City's standard Trash Capture BMP Plan.] • ,. 1 • ------ ------ --- 5807 VA AL EN AY T 7 CT AP 0 ~-2 1811 ---- • • • ----- • • I i z w _. -' <( z ~ • .. ,· . I PARTY RESPONSIBLE FOR MAINTENANCE: NAME 5801-5807 VAN ALLEN OWNER. LLC. ADDRESS 12501 SEAL BEACH BLVD SUITE 225 SEAL BEACH. CA 90740 PHONE NO. PLAN PREPARED BY: CONTACT ______ _ NAME LUIS PARRA, PhD, CPSWQ, ToR. D.WR=E=-------i~~---- SIGNATIJRE COMPANY REC CONSULTANTS ADDRESS 2970 FIFTH AVENUE SUITE 340 SAN DIEGO, CA 92103 PHONE NO. (619) 232-9200 BMP NOTES: CERTIFICATION RCE 66377 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. BMP CONSTRUCTION AND INSPECTION NOTES: 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. TRASH CAPTURE BMP TABLE BMP ID# BMPTYPE SYMBOL TRASH CAPTURE BMPs • INLET FILTER CASQA NO. QUANTITY TC-50 1 EA. * CHOOSE FROM THE LIST BELOW FOR COMPLETING THE FIELDS IN THE INSPECTIONS & MAINTENANCE FREQUENCY COLUMNS: ANNUAL SEMI-ANNUALLY QUARTERLY BIMONTHLY MONTHLY AS NEEDED NONE WEEKLY 1 TIME PER YEAR 2 TIMES PER YEAR 3 TIMES PER YEAR 4 TIMES PER YEAR OT-ff~ AFPRJ\/,t,,_ DRAWING NO. REV. 5/2021 SHEET NO.(S) I INSPECTION * FREQUENCY MAINTENANCE * FREQUENCY 3 13 TIMES PER YEAR 2 TIMES PER YEAR FICE __ _ L/c'. ___ _ 5807 VAN ALLEN WAY [:\,\/\J DY: H!CJcC I I." C I D I!\: