Loading...
HomeMy WebLinkAboutPUD 2022-0004; POULTER PROPERTIES MULTI-UNIT RESIDENTIAL; TRASH CAPTURE SWQMP TEMPLATE; 2023-05-18• - 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 1a: OMA 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: Poulter Properties Residential Project ID: 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. RS-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. Digitally signed by John J h M • h Majocha 0 n 8JOC 8 Date:2023.060802:02:53 -07"00' C81240 expires 9/30/2023 Engineer of Work's Signature, PE Number & Expiration Date John Majocha Print Name John L Majocha, PE Company 6/8/23 Date (_ City of Carlsbad STORM WATER STANDARDS QUESTIONNAIRE E-34 Development Services Land Development Engineering 1635 Faraday Avenue 442-339-2750 www.carlsbadca.gov j 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 concurrently PROJECT INFORMATION PROJECT NAME: Poulter Properties Residential APN: 206-012-01 ADDRESS· 3900 Garfield Street Carlsbad , CA 92008 The project is (check one): Q ew Development [Zredevelopment The total proposed disturbed area is: 3,308 ft2 ( 0.08 ) acres The total proposed newly created and/or replaced impervious area is: 2,707 ft2 ( 0.06 ) 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 N/ A SWQMP #: N/A 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 08/22 STEP1 TO BE COMPLETED FOR ALL PROJECTS To determine if your project is a "development project", please answer the following question: YES NO Is your proiect LIMITED TO routine maintenance activity and/or repair/improvements to an existing building □ [Z] 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 □ [Z] 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 □ [Z] 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? □ [Z] 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 ,s not exempt from PDP, go to Step 3 E-34 Page 2of 4 REV08122 D C --- C D -... C C C - C C C 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 development that creates 10,000 square feet or more of impervious surfaces □ [{] collectively over the entire project site? This includes commercial, industrial, residential, mixed-use, and public development pro1ects on public or pnvate 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 □ [l] impervious surface? This includes commercial, industrial, residential, mixed-use, and public development pro1ects 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 □ [l] 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 □ [Z] surface collectively over the entire project site and supports a hillside development project? A hillside development pro1ect 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 □ [Z] impervious surface collectively over the entire project site and supports a parking lot? A parking lot 1s 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 □ [l] site? A street, road, highway, freeway or dnveway Is any paved impervious surface used for the transporlalton 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 □ [Z] Sensitive Area (ESA)? "Discharging Directly to" includes flow that Is conveyed overland a distance of 200 feet or less from the pro1ect to the ESA. or conveyed in a pipe or open channel any distance as an isolated flow from the pro1ect to the ESA (i.e. not commingled wtlh 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 □ [l] shop ,s a facility that Is categonzed m any one of the following Standard Industrial Classification (SIC) codes. 5013, 5014,5541, 7532-7534,or7536-7539 9. Is your project a new development or redevelopment project that creates and/or replaces 5,000 square □ [Z] feet or more of impervious area that supports a retail gasoline outlet (RGO)? This category includes RGO's that meet the followmg cnteria• (a) 5,000 square feet or more or (b) a pro1ect 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 □ [Z] 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 □ [Z} 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 pro1ect, go to step 4 If your project 1s 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 • Enwonmentolly Sensitive Areas Include but are not limited to all Clean Water Act Section 303{d) impaired water bodies. areas designated as Areas of Special Biological Sigmflcance by the State Water Resources Control Board (Water Qualtty 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 the,r equivalent under the Multi Spec,es Conservabon Program within the Cities and County of San Diego, Habitat Management Pion. and any other equ1valen1 environmentally sensitive areas which have been identified by the City E-34 Page 3 of 4 REV08/22 STEP4 TO BE COMPLETED FOR REDEVELOPMENT PROJECTS THAT ARE PRIORITY DEVELOPMENT PROJECTS (POP) 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 (8) = sq.ft Percent impervious area created or replaced (B/A)*100 = % If you answered •yes", the structural BMPs required for PDP apply only to the creation or replacement of impervious surface and not the entire development. Go to step 5, complete the trash capture question. If you answered "no," the structural BMP's required for PDP apply to the entire development. Go to step 5. complete the trash capture question. STEPS TO BE COMPLETED FOR ALL DEVELOPMENT PROJECTS Complete the question below regarding your Project (SDRWQCB Order No. 201 7-0077): YES NO Is the Project within any of the following Priority Land Use (PLU) categories and not exempt from trash !Capture requirements per section 4.4.2.2 of the BMP Manual? R-23 (15-23 du/ac), R-30 (23-30 du/ac), Pl (Planned Industrial), CF (Community Facilities), GC (General [Z] □ Commercial). L (Local Shopping Center), R (Regional Commercial), V-8 {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. lf you answered "no", Go to step 6. check the second or third box as determined in step 3. List exemption if applicable for 'no' answer here: Single Family Resido<,ce STEPS CHECK THE APPROPRIATE BOX(ES) AND COMPLETE APPLICANT INFORMATION !✓I My project is subject to TRASH CAPTURE REQUIREMENTS and must comply with TRASH CAPTURE REQUIREMENTS of the BMP Manual. I understand I must prepare a Storm Water Quality Management Plan (SWQMP). □My pro1ect is a 'STANDARD PROJECT' OR EXEMPT from PDP and must only comply with 'STANDARD PROJECT' tormwater requirements of the BMP Manual. I will submit a "Standard Pro1ect Requirement Check/1st Form E-36". If my proJect 1s subject to TRASH CAPTURE REQUIREMENTS, I will submit a TRASH CAPTURE Storm Water Quality Management Plan (TCSWQMP) per E-35A. q My project is a PDP and must comply with PDP stormwater requirements of the BMP Manual. I understand I must repare 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 is not subject to the requirements of the BMP Manual. Applicant Information and Signature Box Applicant Name: John Majocha. PE c/o 3900 G S Holdings LLC Applicant Title: Civil Engineer J h M · h °'9-Ulty signed by John~ Ap I. 1 s· t o n a Joe a o.1t·2023.os 1s22-29-.31--0roo Date: 05/15/23 p 1can 1gna ure: E-34 Page 4 of4 REV08/22 SITE INFORMATION CHECKLIST Proiect Summarv Information Project Name Poulter Properties Residential Project ID Project Address 3900 Garfield Street Carlsbad, CA 92008 Assessor's Parcel Number(s) (APN(s)) 206-012-01 Project Watershed (Hydrologic Unit) Carlsbad 904 Parcel Area 0.14 ,6,000 Acres SQuare Feet) Description of Existina Site Condition and Drainaae Patterns Select applicable Land Use Category: High Density Residential CZIR-23 (15-23 du/ac) D R-30 (23-30 du/ac) Industrial □ Pl (Planned Industrial) Commercial □CF (Community Facilities) □ GC (General Commercial) □ L (Local Shopping Center) □ R (Regional Commercial) OV-8 (Village-Barrio) a ve (Visitor Commercial) 0 0 (Office) O VC/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]: The existing site drains via sheet flow from the southwest corner of the property adjacent to the Garfield Street right-of-way to the northeast and discharges to the Tamarack Avenue right-of-way. Existing site conditions are urban in nature. There is no existing storm water conveyance system on the site. No off site runoff is conveyed through the site. Description of Prooosed Site Development and Drainaae Patterns Project Description / Proposed Land Use and/or Activities: The existing site contains a single family residence with frontage along Garfield Street and an accessory dwelling unit and detached garage with frontage along Tamarack Avenue. The accessory dwelling unit and detached garage will be demolished and replaced with two residential units and a new driveway along Tamarack Avenue. The existing single family residence and existing driveway along Garfield Street will remain. Does the project include grading and changes to site topography? @Yes □No Description I Additional Information: No grading will occur at the existing single family residence or within its associated right-of-way along Garfield Street. A retaining wall will be placed between the existing single family residence and the new residential units. The portion of the driveway in the City right of way along Tamarack Avenue will continue to sheet flow to Tamarack Avenue similar to existing conditions. A portion of the site between the north side of the proposed residences and the right-of-way will be regraded to slope toward a trench drain north of the proposed garages. The eastern portion of the site will sheet flow to a proposed landscaped area that will sheet drain to Tamarack Avenue. Does the project include changes to site drainage (e.g., installation of new storm water conveyance systems)? 0 Yes □No Description / Additional Information: A proposed trench drain will be installed north of the proposed residential units to mitigate potential flooding in the garages. The trench drain will collect collect runoff from the area between the Tamarack Avenue right-of-way and the north side of the proposed residential units and discharge it to a 3" sidewalk under drain at the northeast curb line along Tamarack Avenue. 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. ( Cicy of Carlsbad STANDARD PROJECT REQUIREMENT CHECKLIST E-36 Project Information Project Name: Poulter Properties Residential Project ID: DWG No. or Building Permit No.: Development Services Land Development Engineering 1635 Faraday Avenue 442-339-2750 www.ca rl sba dca .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 1s proposed. BMPs must be implemented for site design features where feasible. Leaving the box for a BMP unchecked means 1t 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 I\. 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 Exp/am the site why any BMP not selected Is infeasible m the area below SD-G SD-H Conserve natural Provide buffers around waterbodies features D Natural waterbodies u u D Natural storage reservoirs & drainage corridors D -- I!] Natural areas soils & veQetation (incl. trees) l.!.I -- 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. exp/am why both BMPs are mfeasible m the area below SD-8 SD-I Minimize size of Direct runoff to pervious Construct surfaces from impervious areas areas oermeable materials D Streets and roads u u @ Check this box to confirm iii Sidewalks & walkways l.!.I u that all impervious areas on the site wlll be minimized D Parking areas & lots LI u where feasible Ill Driveways LI LI If this box Is not checked ill Patios, decks, & courtyards l.!J u 1dentJfy the surfaces that cannot be mm1m1zed m area □ Hardcourt recreation areas u u below, and exp/am why It Is E-36 Page 1 ol 4 Revised 04123 O Other: _______ U U infeasible to do so. The portion of the driveway in the City Right of Way along Tamarack Avenue will sheet flow to Tamarack Avenue similar to existing conditions. Due to grading constraints, approximately 3/4 of the on site portion of the driveway slopes toward the proposed garages and drains to a trench drain north of the building to mitigate potential flooding in the garage. The trench drain will collect collect runoff from this area and discharge it to a 3" sidewalk under drain at the northeast frontage. The remaining 1 /4 of the proposed on site driveway will sheet flow to a proposed landscaped area on the east side of the site. C. Ill 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. 111 SD-B Direct runoff to pervious areas O SD-C Install green roofs D SD-E Install rain barrels D. Ill BMPs for landscaped Areas: Check this box if landscaping is proposed and select the BMP below Ill SD-K Sustainable l andscaping (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 BMPa 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 work areas below materials from contacting rainfall or runoff? (See Fact Sheet Bl-5) Select all feasible BMPs for each work area D Check here if none are proposed SC-A SC-8 SC-C Overhead Separation Wind covering flows from protection adjacent areas Ii] Trash & Refuse Storage l!J u u D Materials & Eauioment Storaae u u u E-36 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-0 Sanitary sewer u u SC-E Containment system u u Revised 04/23 Other l!J u D Loadinq & Unloadinq LJ □ □ □ LJ LJ D Fueling □ □ □ □ LJ □ D Maintenance & Reoair □ □ □ n LI LJ D Vehicle & Equioment Cleanino □ □ D □ LI □ 0 Other: LJ u LJ LJ LJ □ B. Management of Storm Water Discharges (see Fact Sheet BL-7) Select one option for each feature below: • Storm drain inlets and catch basins ... D are not proposed Iii will be labeled with stenciling or signage to discouraae dumoina ISC-F) • Interior work surfaces, floor drains & [j) are not proposed D will not discharge directly or indirectly to the MS4 sumps ... or receiving waters • Drain lines (e.g. air conditioning, boiler, D are not proposed Iii will not discharge directly or indirectly to the MS4 etc.) ... or receiving waters • Fire sprinkler test water ... Iii are not proposed D will not discharge directly or indirectly to the MS4 or receivino waters Provide discussion/justification for source control BMPs that will not be implemented (either partially or fully): City trash and recycling containers will be provided. Site trash and recyclables will not be commingled with site storm water runoff. No materials and equipment storage, loading and unloading activities, fueling, maintenance & repair, or vehicle & equipment cleaning will take place on site. The proposed residence will not include interior floor drains or fire sprinklers. E-36 Page 3 of 4 Revised 04/23 Fonn Certification This E-36 Form is intended to comply with applicable requirements of the city's BMP Design Manual. I certify that it has been completed to the best of my ability and accurately reflects the project being proposed and the applicable BMPs proposed to minimize the potentially negative impacts of this project's land development activities on water quality. I understand and acknowledge that the review of this form by City staff is confined to a review and does not relieve me as the person in charge of overseeing the selection and design of storm water BMPs for this project, of my responsibilities for project desiqn. Preparer Signature: John Majocha Dlgffally signed by John Majocha I Date: 5/21 /23 Date: 2023.05 21 09:59:04 -OTOO' Print preparer name: John L. Majocha, PE C/O 3900 G S Holdings LLC 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 project site is located in the R-23 land use category which is subject to Trash Capture requirements. Therefore, the project has been designed to utilize a Full Capture System (FCS) per the City of Carlsbad Track 2 Implementation Plan. This project is required to capture all trash greater than 5 millimeters in size and at a minimum, the trash capture BMPs will be sized for a 1-year 1-hour storm. The Revel Environmental Manufacturing, Inc. (REM) Triton TDAM Perf FTC filter has been selected from the California Water Board's approved list of Certified Full Capture List of Trash Treatment Control Devices. The REM Triton TDAM Perf FTC filter has been tested and certified to meet the aforementioned trash capture criteria. [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. TCBMP-1 REM TRITON TDAM-PERF-FTC FILTER C-1 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 5""'uence Attachment 1a 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 DMA Exhibit "Provide table in this Attachment OR on OMA Exhibit in Attachment 1a Attachment 1 c Trash Capture BMP Design @Included 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 OMA Exhibit: The OMA Exhibit must identify: @Site topography and impervious areas @Site drainage network and connections to drainage offsite IZl Proposed grading (if applicable) IZl Drainage management area (OMA) boundaries, OMA 10 numbers, and OMA areas (square footage or acreage) @Trash Capture BMPs (identify location and type of BMP) • ,. - Trash Capture Device Design Flow Rate 6/6/2023 Flow calculated based on methodology found in Appendix 1.2.1 of the City of Carlsbad BMP Design Manual Q=CxixA Impervious Area (OMA A and C) = 5216 SF Impervious Area CNalue = 0.90 Per Table B.1-1 Pervious Area (OMA A and C) = 299 SF Pervious Area (-Value= 0.14 Per Table B.1-1 Type B Soil Total Area = 5515 SF Total Area = 0.13 Acres Composite C-Value = 0.86 Per Table B.1-1 Rainfall Intensity (i) = 0.471 Per AppendixJ.2.1 Design Flow Rate (Q) = 0.05 CFS • - • -- --- 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: IZI 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 • • • • • • • ,. - • "'""'' ~.•• • ., l +_1!_.,t_,~~_,,!_!_,~_,1,n_""_v:_.;~_:_•_m_7_"~-·:,'_, '-~-~-•--~-~-•fi_•_:"'_,,_. _:-:_:"_l_f_,;_::c_·_ N,mh<',n c,i;,;,,.,,., 'i<,urh~,n c,l;forru, '.)60-FI Dctruit Avenue l l 10 Sot1<h Gr~n<l Awm.1c REM '""'' rernfiltcr,.c<>m Cnnwrd, ( ~~\ifornia 'l4) 18 s~nta Ana. <:aHfomi., '12705 I': (')2'>) 67(>-47.% l': (714) ))7-2676 h (92',J 676.-867(, I', <714) 557-2<,:''> RE: Trash Treatment Control Device Fact Sheet Fo, REM Inc. Full Trash Capture TRITON PERF-FTC Device (Perforated Stainless Steel Trash Guard) December 21, 2021 Mr. Leo Cosentini California State Water Resources Control Board Division of Water Quality P.O. Box 100 Sacramento, CA. 95812 Dear Mr. Cosentini, REM Inc. would like to thank you for taking this opportunity to review our Updated Fact Sheet for the currently approved Full Trash Capture Device, our TRITON PERF-FTC. Throughout this application you will find the pertinent information requested from the Fact Sheet Update Requirements, presented in the requested layout. Currently, REM Inc. has the TRITON PERF-FTC Device as an approved FTC Device as well as the Trition BFTG-FTC Insert and the Triton CPS-FTC on the approved list of devices. Again, we thank you for taking this time to review our application, and if any additional information is required or needed, please feel free to contact us when needed. Charles Fleischmann Vice President Revel Environmental Manufacturing, Inc. REM Inc. • • • •· ... - This device is also able to house an absorbent media as well if ever required. No design modifications are needed, the media element is simply placed between the inner and outer layers of the stainless•steel support housings while maintaining its FTC requirement. 1 G: Device installation locations REM Inc. has been installing PERF•FTC devices in multiple California locations as well as national sales across the U.S . as this has been an approved FTC device since 2018. Some installation areas of acknowledgement would be: City of Antioch: Dept. of Public Works City of Concord: Dept. of Public Works City of Hayward: Dept. of Public Works Please feel free to ask for a more detailed reference list. lH: Certification Clause I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons that manage the system or those persons directly responsible for gathering the information, to the best ofmy knowledge and belief, the information submitted is true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Charles Fleischmann Vice President REM Inc. 3 Section 3: Physical Description 3A: Trash Capture The TRITON-PERF-FTC device utilizes a Perforated Stainless Steel filter element, which has a 51 % open area. This open area helps minimize occlusion and blinding while filteri ng at high volumes. The PERF is housed on the exterior of a stainless steel cartridge or as a stand alone filter element in a wide range of configurations depending upon the many different types and sizes of catch basin available today. 3B: Peak Flows/Trash Volumes PERF-FTC devices are primarily sized in accordance with the catch basins outgoing pipe diameter, inside wall dimensions or throat, below the grate. Selecting the correct size unit not only helps to ensure max flow/bypass rates are met, but also maximum trash capturing volume. The catch basin structure size is next used as a detennining factor for identifying the proper size unit. For example: a 2' X 3' catch basin could utilize a model TR2436-PERF-FTC which allows enough spacing from the walls for incoming water flows to be fully captured. 3C: Hydraulic Capacity Section 1) Standard size models shown: Inserts: Model: TR1818 TR2436 TR24RD TR24SR TR36RD Housing Body 17.5" X 17.5" 34.5" X 23.5" 23.5" Dia. 23.5" X 23.5" 35" Dia. Width: Cartridge 8" 8" 12" 12" 16" Height: cartridge TR10-CART(8) TR14-CART(8) TR14-CART(12) TR14-CART(l2) TR14-CART(16) Cartridge 10" Dia. 14" Dia. 14" Dia. 14" Dia. 14" Dia. Diameter: Max Treatment 3.18 4.42 6.64 6.64 8.85 Raee: (CFS) (CFS) (CFS) {CFS) (CFS) (Eny,ly) Treatment 1.59 2.21 3.32 3.32 4.42 Raeeotso" (CFS) (CFS) (CFS} (CFS) (CFS) capacity: Treatfflfflt .79 J.JJ J.66 J.66 Z.ZJ Rate at 75" {CFS) (CFS} (CFS} (CFS} (CFS) capacity: 8)'pasS Flow: 5.14 13.15 13.15 13.15 13.15 (CFS} (CFS} (CFS} (CFS) (CFS} 5 Area Drain: Model: ADF-7 ADF-10 ADF-14 ADF-24 Diameter: 7" Dia. 10" Dia. 14" Dia. 24" Dia. Height: 8" 8" 16" 16" Cartridge: TR7CART(8) TR10CART(8) TR14CART(16) TR24CART(16) Bypass: 3" Dia. 6"Dia. 10"Dia. 10" Dia. Molt Treatment l .22 3.18 8.85 15.16 Raflr: (CFS} (CFS) {CFS} (CFS) (lll'f'ty} Treatfflfflt 1.1 1.59 4.41 7.63 Ralit at 50" capacity: (CFS} (CFS} (CFS} (CFS} Treatment .55 .19 l .11 3.81 Rolle at 15" (CFS} (CFS) (CFS} (CFS} capacity: Bypass Flow: 1.61 5.14 13.15 51.19 (CFS} (CFS} (CFS} (CFS} TDAM: Madel: TT2 TDAM5(5) TDAM8(10) TDAM12(5) Width: 4" 5" 8" 12" Height: 4" 5" 10" 5" Trench 4" S" 8" 12" Width: Bypan: 3"X4" 3" XS" 3"X8" 3"X1l" Malt Treatment .015 .11 .51 .40 Roar: (CFS) (CFS} {CFS} (CFS} (Ell'f'ly} Treatmmt .013 .08 .16 ..20 Ralit at~ capacity: (CFS} (CFS} (CFS} (CFS} Treotm,nt .006 .04 .13 .11 Ratrat 15" (CFS} (CFS} (CFS} (CFS} capat:lty: Bwass Flow: .44 .55 .81 1.33 (CFS} (CFS} (CFS} (CFS} 7 Section 2) To determine the treatment rates, a commonly used equation was calculated. This is similar to the method used by the County of Los Angeles Dept. of Public Works in a 2006 report on Full Capture Screen and Bypass Requirements. An example of the equation is below: CdA j 2gh QMTFR =-----SF Calculation for the model TR24SR-PERF-FTC Device: 0.60 * 2.085/ j 2 * 3~}ft * .66/t Q MTFR = ---------------2 Tbjs equals: 3.32 CFS for the maximum treatment flow rate, while utilizing a safety factor of 2. Section 3) NIA -No alternative configurations effect the hydraulic capacities of the devices. 3D: Comparison Table *For standard sized models. More sizes and custom configurations are available. Inserts: Model: TR1818 TR2436 TR24RD TR24SR TR36RD Housing Body 17.5" X 17.5" 34.S" X 23.S" 23.S" Dia. 23.S" X 23.S" 35" Dia. Width: Cartridge 8" 8" 12" 12" 16" Height: Cartridge TR10-CART(8) TR14-CART(8) TR14-CART(12) TR14-CART(12) TR14-CART(16) Cartridge 10" 14" Dia. 14" Dia. 14" Dia. 14" Dia. Diameter: Mox Tl'eotmmt 3.18 4.41 6.64 6.64 8.B5 RaR: {CFS} (CFS} (CFS} {CFS} {CFS} (EntJty} Maximum Trash Olplu~ 7.8 22.7 14.5 14.S 59.8 Volume: (Gallons} (Gallons) (Gallons} (Gallons) (Gallons) (galons} 8 4B: Description of instaJiation limitations and non-standard installation procedures One of the common limitations found in the field are catch basin that are too shallow, or the infrastructure is not conducive for a standard Insert filter. We can filter many different types of configurations, but sometimes modifications or custom units are needed to properly capture the target contaminant. When we come across unusual drains, our approach is to always maximi1:e the given catch basin configuration with the largest volume capturing ability. This may lead to a filter that will need lo be customized lo lit. Typical modifications that may be needed are trimming tl1e devices housings, cutting down the si.tc ofthc filter, or adding attachments like an extension of stainless steel or HMWPE depending on the device and model type. 4C: Methods for diagnosing and correcting installation errors A visual assessment can be done to determine if the device has not been installed correctly. lf needed, the de, ice can simply be removed by lifting and removing the device or removing the anchor nuts and then removing the device. Proper re-installation can take place al that point. All filters should be level and firmly in place. Filters are designed to hold a large amount of trash and sediment, which requires the filters to be well supported. If there is any weakness in the support of the filter, more support will of course be needed. There should also not be any gaps where water can bypass the system during nom1al storm events. TRITON PERF -FTC Filters have been designed for their case of installation. If anyone does have installation problems, they may call our offices and we will be glad to help. I (888) 526-4736 Section 5: Operation and maintenance information SA: Device inspection procedures and frequency considerations Each device inspection can be done visually, remove the grate/manhole if needed and assess if the unit is damaged, at what capacity, or experienced a bypass event. REM recommends that devices not on a standard maintenance schedule be inspected 3 times per year or more if needed. SB: Maintenance frequency considerations due to capacity at various volumes REM recommends that devices be maintained 3 times per year, or as outlined by the governing body. It is recommended that devices do not reach more than 50% capacity without a maintenance event. This frequency is dictated by the loading capacity al each particular drain as well. If not properly maintained, devices will reach I 00% capacity and begin the bypass event fo r debris entering the catch basin. If filters are consistently above 50% full, REM recommends additional maintenance intervals. SC: Maintenance procedures Secure area (Traffic and pedestrian controls, if needed). Pull grate and set aside. Remove (VAC) debris that has been captured in system. Pressure washing may also be necessary in some cases to remove certain debris. After system has been cleaned. Visually inspect filter for any damaged areas. Take a picture of the cleaned filter for your records. Fill out report if used for the given catch basin. Replace grate. Remove all traffic control devices. SD: Essential equipment and materials for proper maintenance The maintenance for the TRJTO PERF-FTC Filters is accomplished for the most part by using an industrial vacuum truck due to the large capture capacity of the devices. Simply remove tJ1e grate and begin to remove the captured debris. The device can be brushed or sprayed off if needed. Take note of the amount of debris collected along with the condition of the device. Vacuum Truck, Grate Pick. 25 SE: Description of effects of deferred maintenance Typical implications of deferred maintenance consist primarily of debris that will begin to bypass the device because it has reached the full capacity of its limitations. Ifthc device has been properly installed and supported, it should continue to remain in the original placement from the initial installation. SF: Repair procedures for device components Ia the case that a particular component is damaged, it is advised to call our customer service department for repair or replacement options. Please call (888) 526-4 736 for repair or replacement issues. Section 6: Vector Control Accessibility 6A: Date of device submittal to MVCAC Device Fact Sheet was submitted to MVCAC on 11/23/2021 Device Fact Sheet was approved by MVC AC on 12/20/2021 68: Description or drawing that demonstrates vector control personnel accessibility Drawings continued ou next page. This Section Intentionally Lefl Blank 26 6C: Letter of Verification from MVCAC ~ .......................................................................... . -· Revel Environmental Manufacturing. lnc 960 Detroit Ave. Suite B .. - Concord,CA 94518 December 20, 2021 Dear Mr. Fleischmann, Thank you for the submitting the Revel Environmental Manufacturing Inc. Triton PERF-FTC devices for review by the Mosquito and Vector Control Association of California pursuant to the SWRCB Trash Treatment Control Device Application Requirements. The Association has carefully reviewed the conceptual drawings for the Triton Insert PERF- FTC, Triton Top Hat PERF-FTC, Triton Curb Inlet Triton TDam, and Triton Area Drain devices and verifies that provisions have been included in the designs that allow for full visual access to all areas for presence of standing water, and when necessary, allows for treatments of mosquitoes. While this verification letter confirms that inspection and treatment for the purpose of minimizing mosquito production should be possible with the Revel Environmental Manufacturing Inc. Triton PERF-FTC devices as presented, it does not affect the local mosquito control agency's rights and remedies under the State Mosquito Abatement and Vector Control District Law. For example, if the installed device or the associated stormwater system infrastructure becomes a mosquito breeding source, it may be determined by a local mosquito control agency to be a public nuisance in accordance with California Health and Safety Code sections 2060-2067. "Public nuisance" means any of the following: 1. Any property, excluding water, that has been artificially altered from its natural condition so that it now supports the development, attraction, or harborage of vectors. The presence of vectors in their developmental stages on a property is prima facie evidence that the property is a public nuisance. 2. Any water that is a breeding place for vectors. The presence of vectors in their developmental stages in the water is prima facie evidence that the water is a public nuisance. 3. Any activity that supports the development, attraction, or harborage of vectors, or that facilitates the introduction or spread of vectors. (Heal. & Saf. Code§ 2002 (j).) Declaration of a facility or property as a public nuisance may result in penalties as provided under the Health and Safety Code. Municipalities and the vendors they work with are encouraged to discuss the design, installation, and maintenance of stormwater trash capture devices with their local mosquito control agency to reduce the potential for disease transmission and public nuisance associated with mosquito production. Sincerely, Bob Achermann, MVCAC Executive Director 33 , ... Section 7: Reliability information 7 A: Estimated design life of device Under normal operations and with the impact of large stonn events, the TRITON PERF-FTC has an estimated lifespan of 20+ years. Naturally occurring elements and mineral saturation do not have a resounding effect on either the Stainless Steel, HMWPE, or ABS used in construction. 7B: Warranty information REM warrants the TRITON PERF-FTC device for 3 years after the installation date. This includes the device and material itself. 7C: Customer support For general regional assistance please contact the following REM representatives: Marcel Sloane Northern California Regional Manager 960 Detroit Ave. Suite B Concord, CA. 94518 (888) 526-4736 Marcel(G:rcmfiltcrs.com For technical and design infonnation please contact: Daniel Fagan Northern California Operations Manager 960 Detroit A\C. Suilc B Concord, CA. 945 l 8 (925) 676-4736 Danicl(u-rcmfiilcrs.com Bob Marchant Soulhern California General Manager 2110 S. Grand Ave. Santa Ana, CA. 92705 (714) 557-2676 Bobm(iJ)remfiltcrs.eom Section 8: Field/Lab testing information and analysis AH Test units were placed in HIGH trash and debris areas within Contra Costa County. Below are results from initial inspections. *Continued next page. 34 • • ATTACHMENT 3 City standard Trash Capture BMP Exhibit [Use the City's standard Trash Capture BMP Plan.}