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CUP 91-03C; BP/ARCO FACILITY 5792; STORM WATER QUALITY MANAGEMENT PLAN; 2023-12-19
E-35 REV 12/22 Development Services Land Development Engineering 1635 Faraday Avenue 442-339-2750 www.carlsbadca.gov STORM WATER QUALITY MANAGEMENT PLAN (SWQMP) CITY OF CARLSBAD PRIORITY DEVELOPMENT PROJECT (PDP) STORM WATER QUALITY MANAGEMENT PLAN (SWQMP) FOR [INSERT PROJECT NAME] [INSERT PROJECT ID (CT/MS/SDP/CDP/PD)] [INSERT DRAWING No. (DWG ___-__)] [INSERT GR No. _________] ENGINEER OF WORK: [INSERT CIVIL ENGINEER'S NAME AND PE N E, PROVIDE WET SIGNATURE AND STAMP A PREPARED FOR: [INSERT APPLICANT NAME] [INSERT ADDRESS] [INSERT CITY, STATE ZIP CODE] [INSERT TELEPHONE NUMBER] PREPARED BY: [INSERT COMPANY NAME] [INSERT ADDRESS] [INSERT CITY, STATE ZIP CODE] [INSERT TELEPHONE NUMBER] DATE: [INSERT MONTH, DAY, YEAR] PALOMAR AIRPORT RD CAR WASHPROJECT ID - AMEND 2022-0006 DRAWING No. DWG 541-3AGR No. 2023-0002 BASHAR NAJAR, R.C.E. 78159 PALOMAR AIRPORT PARTNERS, LCCATTN: SAMIR SALEM 3278 VISTA MATAMOEL CAJON, CA 92019619-454-4488 NAJARS ENGINEERING10769 WOODSIDE AVE, STE 204SANTEE, CA 92071 619-971-7514 July 20, 2023December 19, 2023 .. City of Carlsbad ~~/~ 78159 Of/lQ/21 TABLE OF CONTENTS Certification Page Project Vicinity Map FORM E-34 Storm Water Standard Questionnaire Site Information FORM E-36 Standard Project Requirement Checklist Summary of PDP Structural BMPs Attachment 1: Backup for PDP Pollutant Control BMPs Attachment 1a: DMA Exhibit Attachment 1a: Tabular Summary of DMAs and Design Capture Volume Calculations Attachment 1c: Harvest and Use Feasibility Screening (when applicable) Attachment 1d: Infiltration Feasibility Analysis (when applicable) Attachment 1e: Pollutant Control BMP Design Worksheets / Calculations Attachment 1f: Trash Capture BMP Requirements Attachment 2: Backup for PDP Hydromodification Control Measures Attachment 2a: Hydromodification Management Exhibit Attachment 2b: Management of Critical Coarse Sediment Yield Areas Attachment 2d: Flow Control Facility Design Attachment 3: Structural BMP Maintenance Thresholds and Actions Attachment 4: Single Sheet BMP (SSBMP) Exhibit CERTIFICATION PAGE Project Name: [Insert] Project ID: [Insert] I hereby declare that I am the Engineer in Responsible Charge of design of storm water BMPs for this project, and that I have exercised responsible charge over the design of the project as defined in Section 6703 of the Business and Professions Code, and that the design is consistent with the requirements of the BMP Design Manual, which is based on the requirements of SDRWQCB Order No. R9-2013-0001 (MS4 Permit) or the current Order. I have read and understand that the City Engineer has adopted minimum requirements for managing urban runoff, including storm water, from land development activities, as described in the BMP Design Manual. I certify that this SWQMP has been completed to the best of my ability and accurately reflects the project being proposed and the applicable source control and site design BMPs proposed to minimize the potentially negative impacts of this project's land development activities on water quality. I understand and acknowledge that the plan check review of this SWQMP by the City Engineer is confined to a review and does not relieve me, as the Engineer in Responsible Charge of design of storm water BMPs for this project, of my responsibilities for project design. ________________________________________________________ Engineer of Work's Signature, PE Number & Expiration Date ________________________________________________________ Print Name ________________________________________________________ Company ____________________________ Date Palomar Airport Rd Car Wash CUP91-03c 78159 09/30/2023 Bashar Najar Najars Engineering 03/06/2023 AMEND 2022-0006 09/30/2025~ PROJECT VICINITY MAP VICINITY MAP: N.T.S STORM WATER STANDARDS QUESTIONNAIRE E-34 Development Services Land Development Engineering 1635 Faraday Avenue 442-339-2750 www.carlsbadca.gov To address post-development pollutants that may be generated from development projects, the city requires that new development and significant redevelopment priority projects incorporate Permanent Storm Water Best Management Practices (BMPs) into the project design per Carlsbad BMP Design Manual (BMP Manual). To view the BMP Manual, refer to the Engineering Standards (Volume 5). This questionnaire must be completed by the applicant in advance of submitting for a development application (subdivision, discretionary permits and/or construction permits). The results of the questionnaire determine the level of storm water standards that must be applied to a proposed development or redevelopment project. Depending on the outcome, your project will either be subject to ‘STANDARD PROJECT’ requirements, “PRIORITY DEVELOPMENT PROJECT (PDP) requirements or not considered a development project. This questionnaire will also determine if the project is subject to TRASH CAPTURE REQUIREMENTS. Your responses to the questionnaire represent an initial assessment of the proposed project conditions and impacts. City staff has responsibility for making the final assessment after submission of the development application. If staff determines that the questionnaire was incorrectly filled out and is subject to more stringent storm water standards than initially assessed by you, this will result in the return of the development application as incomplete. In this case, please make the changes to the questionnaire and resubmit to the city. If you are unsure about the meaning of a question or need help in determining how to respond to one or more of the questions, please seek assistance from Land Development Engineering staff. A completed and signed questionnaire must be submitted with each development project application. Only one completed and signed questionnaire is required when multiple development applications for the same project are submitted concurrently. PROJECT INFORMATION PROJECT NAME: APN: ADDRESS: The project is (check one): New Development Redevelopment The total proposed disturbed area is: ft2 ( ) acres The total proposed newly created and/or replaced impervious area is: ft2 ( ) acres If your project is covered by an approved SWQMP as part of a larger development project, provide the project ID and the SWQMP # of the larger development project: Project ID SWQMP #: Then, go to Step 1 and follow the instructions. When completed, sign the form at the end and submit this with your application to the city. This Box for City Use Only City Concurrence: YES NO Date: Project ID: By: E-34 Page 1 of 4 REV 08/22 INSTRUCTIONS: Palomar Airport Rd Car Wash 1991 Palomar Airport Rd, Carlsbad, CA 92011 213-092-17 x 20,407 0.468 14,485 0.333 C cityof Carlsbad □ I O I O I □ E-34 Page 2 of 4 REV 08/22 STEP 1 TO BE COMPLETED FOR ALL PROJECTS To determine if your project is a “development project”, please answer the following question: YES NO Is your project LIMITED TO routine maintenance activity and/or repair/improvements to an existing building or structure that do not alter the size (See Section 1.3 of the BMP Design Manual for guidance)? If you answered “yes” to the above question, provide justification below then go to Step 6, mark the box stating “my project is not a ‘development project’ and not subject to the requirements of the BMP manual” and complete applicant information. Justification/discussion: (e.g. the project includes only interior remodels within an existing building): If you answered “no” to the above question, the project is a ‘development project’, go to Step 2. STEP 2 TO BE COMPLETED FOR ALL DEVELOPMENT PROJECTS To determine if your project is exempt from PDP requirements pursuant to MS4 Permit Provision E.3.b.(3), please answer the following questions: Is your project LIMITED to one or more of the following: YES NO 1. Constructing new or retrofitting paved sidewalks, bicycle lanes or trails that meet the following criteria: a) Designed and constructed to direct storm water runoff to adjacent vegetated areas, or other non- erodible permeable areas; OR b) Designed and constructed to be hydraulically disconnected from paved streets or roads; OR c) Designed and constructed with permeable pavements or surfaces in accordance with USEPA Green Streets guidance? 2. Retrofitting or redeveloping existing paved alleys, streets, or roads that are designed and constructed in accordance with the USEPA Green Streets guidance? 3. Ground Mounted Solar Array that meets the criteria provided in section 1.4.2 of the BMP manual? If you answered “yes” to one or more of the above questions, provide discussion/justification below, then go to Step 6, mark the second box stating “my project is EXEMPT from PDP …” and complete applicant information. Discussion to justify exemption (e.g. the project redeveloping existing road designed and constructed in accordance with the USEPA Green Street guidance): If you answered “no” to the above questions, your project is not exempt from PDP, go to Step 3. x x x x □ □ □ □ □ □ □ □ E-34 Page 3 of 4 REV 08/22 STEP 3 TO BE COMPLETED FOR ALL NEW OR REDEVELOPMENT PROJECTS To determine if your project is a PDP, please answer the following questions (MS4 Permit Provision E.3.b.(1)): YES NO 1. Is your project a new development that creates 10,000 square feet or more of impervious surfaces collectively over the entire project site? This includes commercial, industrial, residential, mixed-use, and public development projects on public or private land. 2. Is your project a redevelopment project creating and/or replacing 5,000 square feet or more of impervious surface collectively over the entire project site on an existing site of 10,000 square feet or more of impervious surface? This includes commercial, industrial, residential, mixed-use, and public development projects on public or private land. 3. Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more of impervious surface collectively over the entire project site and supports a restaurant? A restaurant is a facility that sells prepared foods and drinks for consumption, including stationary lunch counters and refreshment stands selling prepared foods and drinks for immediate consumption (Standard Industrial Classification (SIC) code 5812). 4. Is your project a new or redevelopment project that creates 5,000 square feet or more of impervious surface collectively over the entire project site and supports a hillside development project? A hillside development project includes development on any natural slope that is twenty-five percent or greater. 5. Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more of impervious surface collectively over the entire project site and supports a parking lot? A parking lot is a land area or facility for the temporary parking or storage of motor vehicles used personally for business or for commerce. 6. Is your project a new or redevelopment project that creates and/or replaces 5,000 square feet or more of impervious street, road, highway, freeway or driveway surface collectively over the entire project site? A street, road, highway, freeway or driveway is any paved impervious surface used for the transportation of automobiles, trucks, motorcycles, and other vehicles. 7. Is your project a new or redevelopment project that creates and/or replaces 2,500 square feet or more of impervious surface collectively over the entire site, and discharges directly to an Environmentally Sensitive Area (ESA)? “Discharging Directly to” includes flow that is conveyed overland a distance of 200 feet or less from the project to the ESA, or conveyed in a pipe or open channel any distance as an isolated flow from the project to the ESA (i.e. not commingled with flows from adjacent lands).* 8. Is your project a new development or redevelopment project that creates and/or replaces 5,000 square feet or more of impervious surface that supports an automotive repair shop? An automotive repair shop is a facility that is categorized in any one of the following Standard Industrial Classification (SIC) codes: 5013, 5014, 5541, 7532-7534, or 7536-7539. 9. Is your project a new development or redevelopment project that creates and/or replaces 5,000 square feet or more of impervious area that supports a retail gasoline outlet (RGO)? This category includes RGO’s that meet the following criteria: (a) 5,000 square feet or more or (b) a project Average Daily Traffic (ADT) of 100 or more vehicles per day. 10. Is your project a new or redevelopment project that results in the disturbance of one or more acres of land and are expected to generate pollutants post construction? 11. Is your project located within 200 feet of the Pacific Ocean and (1) creates 2,500 square feet or more of impervious surface or (2) increases impervious surface on the property by more than 10%? (CMC 21.203.040) If you answered “yes” to one or more of the above questions, your project is a PDP. If your project is a redevelopment project, go to step 4. If your project is a new project, go to step 5, complete the trash capture question. If you answered “no” to all of the above questions, your project is a ‘STANDARD PROJECT’. Go to step 5, complete the trash capture question. * Environmentally Sensitive Areas include but are not limited to all Clean Water Act Section 303(d) impaired water bodies; areas designated as Areas of Special Biological Significance by the State Water Resources Control Board (Water Quality Control Plan for the San Diego Basin (1994) and amendments); water bodies designated with the RARE beneficial use by the State Water Resources Control Board (Water Quality Control Plan for the San Diego Basin (1994) and amendments); areas designated as preserves or their equivalent under the Multi Species Conservation Program within the Cities and County of San Diego; Habitat Management Plan; and any other equivalent environmentally sensitive areas which have been identified by the City. x x x x x x x x x x x □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ E-34 Page 4 of 4 REV 08/22 STEP 4 TO BE COMPLETED FOR REDEVELOPMENT PROJECTS THAT ARE PRIORITY DEVELOPMENT PROJECTS (PDP) ONLY Complete the questions below regarding your redevelopment project (MS4 Permit Provision E.3.b.(2)): YES NO Does the redevelopment project result in the creation or replacement of impervious surface in an amount of less than 50% of the surface area of the previously existing development? Complete the percent impervious calculation below: Existing impervious area (A) = sq. ft. Total proposed newly created or replaced impervious area (B) = sq. ft. Percent impervious area created or replaced (B/A)*100 = % If you answered “yes”, the structural BMPs required for PDP apply only to the creation or replacement of impervious surface and not the entire development. Go to step 5, complete the trash capture question. If you answered “no,” the structural BMP’s required for PDP apply to the entire development. Go to step 5, complete the trash capture question. STEP 5 TO BE COMPLETED FOR ALL DEVELOPMENT PROJECTS Complete the question below regarding your Project (SDRWQCB Order No. 2017-0077): YES NO Is the Project within any of the following Priority Land Use (PLU) categories and not exempt from trash capture requirements per section 4.4.2.2 of the BMP Manual? R-23 (15-23 du/ac), R-30 (23-30 du/ac), PI (Planned Industrial), CF (Community Facilities), GC (General Commercial), L (Local Shopping Center), R (Regional Commercial), V-B (Village-Barrio), VC (Visitor Commercial), O (Office), VC/OS (Visitor Commercial/Open Space), PI/O (Planned Industrial/Office), or Public Transportation Station If you answered “yes”, the ‘PROJECT’ is subject to TRASH CAPTURE REQUIREMENTS. Go to step 6, check the first box stating, “My project is subject to TRASH CAPTURE REQUIREMENTS …” and the second or third box as determined in step 3. If you answered “no”, Go to step 6, check the second or third box as determined in step 3. List exemption if applicable for ‘no’ answer here: STEP 6 CHECK THE APPROPRIATE BOX(ES) AND COMPLETE APPLICANT INFORMATION My project is subject to TRASH CAPTURE REQUIREMENTS and must comply with TRASH CAPTURE REQUIREMENTS of the BMP Manual. I understand I must prepare a Storm Water Quality Management Plan (SWQMP). My project is a ‘STANDARD PROJECT’ OR EXEMPT from PDP and must only comply with ‘STANDARD PROJECT’ stormwater requirements of the BMP Manual. I will submit a “Standard Project Requirement Checklist Form E-36”. If my project is subject to TRASH CAPTURE REQUIREMENTS, I will submit a TRASH CAPTURE Storm Water Quality Management Plan (TCSWQMP) per E-35A. My project is a PDP and must comply with PDP stormwater requirements of the BMP Manual. I understand I must prepare a Storm Water Quality Management Plan (SWQMP) per E-35 template for submittal at time of application. Note: For projects that are close to meeting the PDP threshold, staff may require detailed impervious area calculations and exhibits to verify if ‘STANDARD PROJECT’ stormwater requirements apply. My project is NOT a ‘development project’ and is not subject to the requirements of the BMP Manual. Applicant Information and Signature Box Applicant Name: Applicant Title: Applicant Signature: Date: x43,252 14,337 33.15 x x x Bashar Najar Engineer of Record 03/06/2023 14,485 33.49 □ □ □ □ □ □ □ □ ~ SITE INFORMATION CHECKLIST Project Summary Information Project Name Project ID Project Address Assessor's Parcel Number(s) (APN(s)) Project Watershed (Hydrologic Unit) Carlsbad 904 Parcel Area ________ Acres (____________ Square Feet) Existing Impervious Area (subset of Parcel Area) ________ Acres (____________ Square Feet) Area to be disturbed by the project (Project Area) ________ Acres (____________ Square Feet) Project Proposed Impervious Area (subset of Project Area) ________ Acres (____________ Square Feet) Project Proposed Pervious Area (subset of Project Area) ________ Acres (____________ Square Feet) Note: Proposed Impervious Area + Proposed Pervious Area = Area to be Disturbed by the Project. This area includes but is not limited to off-site work including public improvements and temporary disturbance such as vehicle and equipment staging areas, construction worker foot traffic, soil/gravel piles, utility trenches, backfill cuts and slope keyways. Palomar Airport Rd Car Wash AMEND 2022-0006, DWG 541-3A, GR NO. 2023-0002 1991 Palomar Airport Rd,Carlsbad, CA 92011 213-092-17 0.682 297,197 43,2520.993 20,4070.468 14,4850.333 0.136 5,922 Description of Existing Site Condition and Drainage Patterns Current Status of the Site (select all that apply): Existing development Previously graded but not built out Agricultural or other non-impervious use Vacant, undeveloped/natural Description / Additional Information: Existing Land Cover Includes (select all that apply): Vegetative Cover Non-Vegetated Pervious Areas Impervious Areas Description / Additional Information: Underlying Soil belongs to Hydrologic Soil Group (select all that apply): NRCS Type A NRCS Type B NRCS Type C NRCS Type D Approximate Depth to Groundwater (GW): GW Depth < 5 feet 5 feet < GW Depth < 10 feet 10 feet < GW Depth < 20 feet GW Depth > 20 feet Existing Natural Hydrologic Features (select all that apply): Watercourses Seeps Springs Wetlands None Description / Additional Information: x x x x x x The existing site has an existing convenience store, gas station and car wash with parking, landscape and hard scape areas. The existing impervious area includes parking lots, driveways, and buildings. The existing previous area is landscape areas with trees and shrubs. The existing site has an existing car wash, convenience store and gas station. No watercourses, wetlands, springs or seeps exist on site. Description of Existing Site Topography and Drainage [How is storm water runoff conveyed from the site? At a minimum, this description should answer (1) whether existing drainage conveyance is natural or urban; (2) describe existing constructed storm water conveyance systems, if applicable; and (3) is runoff from offsite conveyed through the site? if so, describe]: 1) Existing drainage conveyances is urban conveyance by means of storm drains, brow ditches and curbs/gutters. 2) Includes curbs & gutters that convey water to existing inlets and storm drain systems. These drains systems discharge into brow ditches that convey water downan existing hill and discharges from the site into the existing storm drain systemunderneath Palomar Oaks Road to the southeast. 3) No runoff from off site of the parcel is conveyed through the site. Description of Proposed Site Development and Drainage Patterns Project Description / Proposed Land Use and/or Activities: List/describe proposed impervious features of the project (e.g., buildings, roadways, parking lots, courtyards, athletic courts, other impervious features): List/describe proposed pervious features of the project (e.g., landscape areas): Does the project include grading and changes to site topography? Yes No Description / Additional Information: Does the project include changes to site drainage (e.g., installation of new storm water conveyance systems)? Yes No Description / Additional Information: Redevelopment replacing existing carwash and construction/installment of newcarwash tunnel, vaccum stalls, pay stations, sidewalk, landscape and hardscape. New car wash tunnel, sidewalk, vacuum stalls and associated hardscape. Planter areas, trees and two biofiltration basins. The project proposes a minor grading to remove and replace hardscape and structures. The overall drainage pattern will match the existing condition. x x The project includes replacement of curb/gutter, install ribbon gutters and post construction BMPs. BMP-A will connect to existing storm drain pipe. Also, to avoid commingle, a trench grate is being proposed along the west of the property to capture and convey water to proposed drain basin in BMP-A. The proposed condition will match existing drainage patterns. Identify whether any of the following features, activities, and/or pollutant source areas will be present (select all that apply): On-site storm drain inlets Interior floor drains and elevator shaft sump pumps Interior parking garages Need for future indoor & structural pest control Landscape/Outdoor Pesticide Use Pools, spas, ponds, decorative fountains, and other water features Food service Refuse areas Industrial processes Outdoor storage of equipment or materials Vehicle and Equipment Cleaning Vehicle/Equipment Repair and Maintenance Fuel Dispensing Areas Loading Docks Fire Sprinkler Test Water Miscellaneous Drain or Wash Water Plazas, sidewalks, and parking lots xx x x x x x x x Identification of Receiving Water Pollutants of Concern Describe path of storm water from the project site to the Pacific Ocean (or bay, lagoon, lake or reservoir, as applicable): List any 303(d) impaired water bodies within the path of storm water from the project site to the Pacific Ocean (or bay, lagoon, lake or reservoir, as applicable), identify the pollutant(s)/stressor(s) causing impairment, and identify any TMDLs for the impaired water bodies: 303(d) Impaired Water Body Pollutant(s)/Stressor(s) TMDLs Identification of Project Site Pollutants Identify pollutants anticipated from the project site based on all proposed use(s) of the site (see Table B.6-1 below): Pollutant Not Applicable to the Project Site Anticipated from the Project Site Also a Receiving Water Pollutant of Concern Sediment Nutrients Heavy Metals Organic Compounds Trash & Debris Oxygen Demanding Substances Oil & Grease Bacteria & Viruses Pesticides The project runoff drains to the southeast of the parcel then gets collected into a public stormdrain system within Palomar Oaks Way which discharges into Canyon de la Encinas and flowswest to the Pacific Ocean at Carlsbad State Beach. N/A- No 303d water bodies x x x x x x x x x RECEIVING WATER EXHIBIT Source: Google Earth & Regional WMAA Data (2018) Encinas, Canyon de las Endnlla, canyon de lea 20341941 RCH_COM_JD20345195 FlYPE STREAM/RIVER FCODE 46001 RCH_COOE 18070303000603 19971122 1 00255416 Endnas. Canyon de las 0 No <Null► TABLE Error! No text of specified style in document.-1. Anticipated and Potential Pollutants Generated by Land Use Type General Pollutant Categories Priority Project Categories Sediment Nutrients Heavy Metals Organic Compounds Trash & Debris Oxygen Demanding Substances Oil & Grease Bacteria & Viruses Pesticides Detached Residential Development X X X X X X X Attached Residential Development X X X P(1) P(2) P X Commercial Development >one acre P(1) P(1) X P(2) X P(5) X P(3) P(5) Heavy Industry X X X X X X Automotive Repair Shops X X(4)(5) X X Restaurants X X X X P(1) Hillside Development >5,000 ft2 X X X X X X Parking Lots P(1) P(1) X X P(1) X P(1) Retail Gasoline Outlets X X X X X Streets, Highways & Freeways X P(1) X X(4) X P(5) X X P(1) X = anticipated P = potential (1) A potential pollutant if landscaping exists onsite. (2) A potential pollutant if the project includes uncovered parking areas. (3) A potential pollutant if land use involves food or animal waste products. (4) Including petroleum hydrocarbons. (5) Including solvents. Trash Capture BMP Requirements The project must meet the following Trash Capture BMP Requirements (see Section 4.4 of the BMP Design Manual): 1) The trash capture BMP is sized for a one-year, one-hour storm event or equivalent storm drain system, and 2) the trash capture BMP captures trash equal or greater to 5mm. Description / Discussion of Trash Capture BMPs: Hydromodification Management Requirements Do hydromodification management requirements apply (see Section 1.6 of the BMP Design Manual)? Yes, hydromodification management flow control structural BMPs required. No, the project will discharge runoff directly to existing underground storm drains discharging directly to water storage reservoirs, lakes, enclosed embayments, or the Pacific Ocean. No, the project will discharge runoff directly to conveyance channels whose bed and bank are concrete-lined all the way from the point of discharge to water storage reservoirs, lakes, enclosed embayments, or the Pacific Ocean. No, the project will discharge runoff directly to an area identified as appropriate for an exemption by the WMAA for the watershed in which the project resides. Description / Additional Information (to be provided if a 'No' answer has been selected above): All PDPs are subject to trash capture requirements. DMA A & DMA B utilize biofiltration BMPand trash capture device, Flogard Inlet Filter (FGP-RF24D), to meet trash capture requirements. Proposing a Flogard Trench Drain Filter, to meet trash captures for DMA 4. x Critical Coarse Sediment Yield Areas* *This Section only required if hydromodification management requirements apply Based on the maps provided within the WMAA, do potential critical coarse sediment yield areas exist within the project drainage boundaries? Yes No, no critical coarse sediment yield areas to be protected based on WMAA maps If yes, have any of the optional analyses presented in Appendix H of the manual been performed? H.6.1 Site-Specific GLU Analysis H.7 Downstream Systems Sensitivity to Coarse Sediment H.7.3 Coarse Sediment Source Area Verification No optional analyses performed, the project will avoid critical coarse sediment yield areas identified based on WMAA maps If optional analyses were performed, what is the final result? No critical coarse sediment yield areas to be protected based on verification of GLUs onsite. Critical coarse sediment yield areas exist but additional analysis has determined that protection is not required. Documentation attached in Attachment 8 of the SWQMP. Critical coarse sediment yield areas exist and require protection. The project will implement management measures described in Sections H.2, H.3, and H.4 as applicable, and the areas are identified on the SWQMP Exhibit. Discussion / Additional Information: x No CCSYAs exist on site or within the Project's drainage boundary. CCSYA EXHIBIT Source: Google Earth & Regional WMAA Data (2018) Flow Control for Post-Project Runoff* *This Section only required if hydromodification management requirements apply List and describe point(s) of compliance (POCs) for flow control for hydromodification management (see Section 6.3.1). For each POC, provide a POC identification name or number correlating to the project's HMP Exhibit and a receiving channel identification name or number correlating to the project's HMP Exhibit. Has a geomorphic assessment been performed for the receiving channel(s)? No, the low flow threshold is 0.1Q2 (default low flow threshold) Yes, the result is the low flow threshold is 0.1Q2 Yes, the result is the low flow threshold is 0.3Q2 Yes, the result is the low flow threshold is 0.5Q2 If a geomorphic assessment has been performed, provide title, date, and preparer: Discussion / Additional Information: (optional) Two points of compliance for flow control for hydomodification management are being implemented. BMP-A correlates with POC 1 and BMP-B correlates with POC 2, which both POCs drain to existing public storm drain system southwest of property at Palomar Oaks Way. BMP Sizing Spreadsheet V3.1 was used to analyze BMP-A & B for HMP components by inputing pervious and impervious area and proposing an orifice. x Other Site Requirements and Constraints When applicable, list other site requirements or constraints that will influence storm water management design, such as zoning requirements including setbacks and open space, or City codes governing minimum street width, sidewalk construction, allowable pavement types, and drainage requirements. Optional Additional Information or Continuation of Previous Sections As Needed This space provided for additional information or continuation of information from previous sections as needed. No other site constraints are applicable to the SWQMP and associated design work. E-36 Page 1 of 4 Revised 02/22 Development Services Land Development Engineering 1635 Faraday Avenue 442-339-2750 www.carlsbadca.gov STANDARD PROJECT REQUIREMENT CHECKLIST E-36 Project Information Project Name: Project ID: DWG No. or Building Permit No.: Baseline BMPs for Existing and Proposed Site Features Complete the Table 1 - Site Design Requirement to document existing and proposed site features and the BMPs to be implemented for them. All BMPs must be implemented where applicable and feasible. Applicability is generally assumed if a feature exists or is proposed. BMPs must be implemented for site design features where feasible. Leaving the box for a BMP unchecked means it will not be implemented (either partially or fully) either because it is inapplicable or infeasible. Explanations must be provided in the area below. The table provides specific instructions on when explanations are required. Table 1 - Site Design Requirement A. Existing Natural Site Features (see Fact Sheet BL-1) 1. Check the boxes below for each existing feature on the site. 1. Select the BMPs to be implemented for each identified feature. Explain why any BMP not selected is infeasible in the area below. SD-G Conserve natural features SD-H Provide buffers around waterbodies Natural waterbodies Natural storage reservoirs & drainage corridors -- Natural areas, soils, & vegetation (incl. trees) -- B. BMPs for Common Impervious Outdoor Site Features (see Fact Sheet BL-2) 1. Check the boxes below for each proposed feature. 2. Select the BMPs to be implemented for each proposed feature. If neither BMP SD-B nor SD-I is selected for a feature, explain why both BMPs are infeasible in the area below. SD-B Direct runoff to pervious areas SD-I Construct surfaces from permeable materials Minimize size of impervious areas Streets and roads Check this box to confirm that all impervious areas on the site will be minimized where feasible. If this box is not checked, identify the surfaces that cannot be minimized in area below, and explain why it is Sidewalks & walkways Parking areas & lots Driveways Patios, decks, & courtyards Hardcourt recreation areas Palomar Airport Rd Car Wash 541-3A x x x x x x x Infeasible explanation for Table 1, Part A: No natural water bodies on site AMEND 2022-0006, GR NO. 2023-0002 □ □ □ □ □ □ □ □ □ C cityof Carlsbad □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ E-36 Page 2 of 4 Revised 02/22 Other: _______________ infeasible to do so. C. BMPs for Rooftop Areas: Check this box if rooftop areas are proposed and select at least one BMP below. If no BMPs are selected, explain why they are infeasible in the area below. (see Fact Sheet BL-3) SD-B Direct runoff to pervious areas SD-C Install green roofs SD-E Install rain barrels D. BMPs for Landscaped Areas: Check this box if landscaping is proposed and select the BMP below SD-K Sustainable Landscaping If SD-K is not selected, explain why it is infeasible in the area below. (see Fact Sheet BL-4) Provide discussion/justification for site design BMPs that will not be implemented (either partially or fully): Baseline BMPs for Pollutant-generating Sources All development projects must complete Table 2 - Source Control Requirement to identify applicable requirements for documenting pollutant-generating sources/ features and source control BMPs. BMPs must be implemented for source control features where feasible. Leaving the box for a BMP unchecked means it will not be implemented (either partially or fully) either because it is inapplicable or infeasible. Explanations must be provided in the area below. The table provides specific instructions on when explanations are required. Table 2 - Source Control Requirement A. Management of Storm Water Discharges 1. Identify all proposed outdoor work areas below Check here if none are proposed 2. Which BMPs will be used to prevent materials from contacting rainfall or runoff? (See Fact Sheet BL-5) Select all feasible BMPs for each work area 3. Where will runoff from the work area be routed? (See Fact Sheet BL-6) Select one or more option for each work area SC-A Overhead covering SC-B Separation flows from adjacent areas SC-C Wind protection SC-D Sanitary sewer SC-E Containment system Other Trash & Refuse Storage Materials & Equipment Storage x x x x □ □ □ D □ □ □ D D □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ E-36 Page 3 of 4 Revised 02/22 Loading & Unloading Fueling Maintenance & Repair Vehicle & Equipment Cleaning Other: _________________ B. Management of Storm Water Discharges (see Fact Sheet BL-7) Select one option for each feature below: • Storm drain inlets and catch basins … are not proposed will be labeled with stenciling or signage to discourage dumping (SC-F) • Interior work surfaces, floor drains & sumps … are not proposed will not discharge directly or indirectly to the MS4 or receiving waters • Drain lines (e.g. air conditioning, boiler, etc.) … are not proposed will not discharge directly or indirectly to the MS4 or receiving waters • Fire sprinkler test water … are not proposed will not discharge directly or indirectly to the MS4 or receiving waters Provide discussion/justification for source control BMPs that will not be implemented (either partially or fully): x x x x x x x x □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ E-36 Page 4 of 4 Revised 02/22 Form Certification This E-36 Form is intended to comply with applicable requirements of the city’s BMP Design Manual. I certify that it has been completed to the best of my ability and accurately reflects the project being proposed and the applicable BMPs proposed to minimize the potentially negative impacts of this project's land development activities on water quality. I understand and acknowledge that the review of this form by City staff is confined to a review and does not relieve me as the person in charge of overseeing the selection and design of storm water BMPs for this project, of my responsibilities for project design. Preparer Signature: Date: Print preparer name: Bashar Najar 03/07/2023 -J J ,/ JI ,, __,,,.--I I ,I.fl / /II__.---------, L----" I' I V SUMMARY OF PDP STRUCTURAL BMPS PDP Structural BMPs All PDPs must implement structural BMPs for storm water pollutant control (see Chapter 5 of the BMP Design Manual). Selection of PDP structural BMPs for storm water pollutant control must be based on the selection process described in Chapter 5. PDPs subject to hydromodification management requirements must also implement structural BMPs for flow control for hydromodification management (see Chapter 6 of the BMP Design Manual). PDP’s subject to trash capture requirements must implement trash capture devices (see Chapter 4 of the BMP Design Manual). Storm water pollutant control, flow control for hydromodification management and trash capture can all be achieved within the same structural BMP(s). PDP structural BMPs must be verified by the City at the completion of construction. This may include requiring the project owner or project owner's representative to certify construction of the structural BMPs (see Section 1.12 of the BMP Design Manual). PDP structural BMPs must be maintained into perpetuity, and the City must confirm the maintenance (see Section 7 of the BMP Design Manual). Use this form to provide narrative description of the general strategy for structural BMP implementation at the project site in the box below. Then complete the PDP structural BMP summary information sheet for each structural BMP within the project (copy the BMP summary information page as many times as needed to provide summary information for each individual structural BMP). Describe the general strategy for structural BMP implementation at the site. This information must describe how the steps for selecting and designing storm water pollutant control BMPs presented in Section 5.1 of the BMP Design Manual were followed, and the results (type of BMPs selected). For projects requiring hydromodification flow control BMPs and trash capture devices, indicate whether pollutant control, trash capture and flow control BMPs are integrated together or separate. [Continue on next page as necessary.] DMA-3, stormwater drains to the west where it is collected into a proposed biofiltration basin(BMP-A). It is treated and discharged by connecting to the existing 33" pipe and point of compliance 1 (POC-1). The biofiltration basin is sized to mitigate HMP at POC-1. Step 1: DCV per Appendix B.1 Project rainfall depth: 0.69 Tributary Areas: 12,909 SF = 0.296 AC Runoff factor: [(5,654 SF*0.9)+(3,844 SF*0.9)+(3,411 SF*0.1)] / 12,909 SF = 0.69 Site Design Volume Reduction: N/A DCV = 512 Step 2: Determine Retention Requirements per Appendix B.2 Capture and use is infeasible because no habitable structures over 9 stories tall proposed Infiltration is restricted on site. Impermeable liner will be used. Design infiltration per Table B.2-3 - 0.025 in/hr Retention requirements = 5 cf [Continued from previous page – This page is reserved for continuation of description of general strategy for structural BMP implementation at the site.] Step 3: Determine BMP Performance per Appendix B.2 Performed BMP performance by using Excel sheet SSD-BMP_Worksheet_V1. Please see Attachment 1e. Step 4: An Executed Permanent Storm Water Quality BMP Maintenance Agreement will be produced and signed at final design DMA-6, stormwater drains south where it is collected into a proposed biofiltration basin (BMP-B). It is treated and discharged at a proposed 12" pipe and travels to BMP-A bypassing to existing 33" pipe and finally to point of compliance 1 (POC-1) The biofiltration basin is sized to mitigate HMP at POC-1. Step 1: DCV per Appendix B.1 Project rainfall depth: 0.69 Tributary Areas: 15,833 SF = 0.363 AC Runoff factor: [(8,683 SF*0.9)+(4,639 SF*0.9)+(2,511 SF*0.1)] / 15,833 SF = 0.77 Site Design Volume Reduction: N/A DCV = 701 Step 2: Determine Retention Requirements per Appendix B.2 Capture and use is infeasible because no habitable structures over 9 stories tall proposed Infiltration is restricted on site. Impermeable liner will be used. Design infiltration per Table B.2-3 - 0.025 in/hr Retention requirements = 6 cf Step 3: Determine BMP Performance per Appendix B.2 Performed BMP performance by using Excel sheet SSD-BMP_Worksheet_V1. Please see Attachment 1e. Step 4: An Executed Permanent Storm Water Quality BMP Maintenance Agreement will be produced and signed at final design Structural BMP Summary Information [Copy this page as needed to provide information for each individual proposed structural BMP] Structural BMP ID No. DWG _________ Sheet No. __________ Type of structural BMP: Retention by harvest and use (HU-1) Retention by infiltration basin (INF-1) Retention by bioretention (INF-2) Retention by permeable pavement (INF-3) Dry Wells (INF-4) Partial retention by biofiltration with partial retention (PR-1) Biofiltration (BF-1) Proprietary Biofiltration (BF-3) Flow-thru treatment control included as pre-treatment/forebay for an onsite retention or biofiltration BMP (provide BMP type/description and indicate which onsite retention or biofiltration BMP it serves in discussion section below) Detention pond or vault for hydromodification management Trash capture device Other (describe in discussion section below) Purpose: Pollutant control only Hydromodification control only Combined pollutant control and hydromodification control Pre-treatment/forebay for another structural BMP Trash Capture Other (describe in discussion section below) Discussion (as needed): BMP-A 541-3A 4, 5, 7 X X BMP-A treats DMA-3 which consists of vacuums stalls, curbs and gutters. Water isconveyed through curbs and gutters to BMP-A where it connects to existing 33" storm pipe and discharges to POC-1. Structural BMP Summary Information [Copy this page as needed to provide information for each individual proposed structural BMP] Structural BMP ID No. DWG _________ Sheet No. __________ Type of structural BMP: Retention by harvest and use (HU-1) Retention by infiltration basin (INF-1) Retention by bioretention (INF-2) Retention by permeable pavement (INF-3) Dry Wells (INF-4) Partial retention by biofiltration with partial retention (PR-1) Biofiltration (BF-1) Proprietary Biofiltration (BF-3) Flow-thru treatment control included as pre-treatment/forebay for an onsite retention or biofiltration BMP (provide BMP type/description and indicate which onsite retention or biofiltration BMP it serves in discussion section below) Detention pond or vault for hydromodification management Trash capture device Other (describe in discussion section below) Purpose: Pollutant control only Hydromodification control only Combined pollutant control and hydromodification control Pre-treatment/forebay for another structural BMP Trash Capture Other (describe in discussion section below) Discussion (as needed): BMP-B 541-3A 4, 5, 7 X X BMP-B treats DMA-6 which consists of vacuums stalls, car wash tunnel, driveway, curbsand gutters. Water is conveyed through curbs and gutters to BMP-A and it connects to existing 33" storm pipe and discharges to POC-1. ATTACHMENT 1 BACKUP FOR PDP POLLUTANT CONTROL BMPS This is the cover sheet for Attachment 1. Check which Items are Included behind this cover sheet: Attachment Sequence Contents Checklist Attachment 1a DMA Exhibit (Required) See DMA Exhibit Checklist on the back of this Attachment cover sheet. (24”x36” Exhibit typically required) Included Attachment 1b Tabular Summary of DMAs Showing DMA ID matching DMA Exhibit, DMA Area, and DMA Type (Required)* *Provide table in this Attachment OR on DMA Exhibit in Attachment 1a Included on DMA Exhibit in Attachment 1a Included as Attachment 1b, separate from DMA Exhibit Attachment 1c Form K-7, Harvest and Use Feasibility Screening Checklist (Required unless the entire project will use infiltration BMPs) Refer to Appendix B of the BMP Design Manual to complete Form K-7. Included Not included because the entire project will use infiltration BMPs Attachment 1d Infiltration Feasibility Analysis (Required unless the project will use harvest and use BMPs) Refer to Appendix D of the BMP Design Manual. Included Not included because the entire project will use harvest and use BMPs Attachment 1e Pollutant Control BMP Design Worksheets / Calculations (Required) Refer to Appendices B, E, and I of the BMP Design Manual for structural pollutant control and significant site design BMP design guidelines Included Attachment 1f Trash Capture BMP Design Calculations Refer to Appendices J of the BMP Design Manual for Trash capture BMP design guidelines Included Not included because the entire project is not subject to trash capture requirements x x x x x x Use this checklist to ensure the required information has been included on the DMA Exhibit: The DMA Exhibit must identify: Underlying hydrologic soil group Approximate depth to groundwater Existing natural hydrologic features (watercourses, seeps, springs, wetlands) Critical coarse sediment yield areas to be protected (if present) Existing topography and impervious areas Existing and proposed site drainage network and connections to drainage offsite Proposed grading Proposed impervious features Proposed design features and surface treatments used to minimize imperviousness Drainage management area (DMA) boundaries, DMA ID numbers, and DMA areas (square footage or acreage), and DMA type (i.e., drains to BMP, self-retaining, or self-mitigating) Structural BMPs (identify location and type of BMP) Tabular DMA Summary x x not present x x x x x x x x not present ATTACHMENT 1A RW RW RW RW RW RW RW RW RW RW RW RW W W W W W W W W W W W W W RW RW RW RW RW RW RW RW RW W W W W W W W W W W W W W W W W W W W W W W W W W W W 6 7 . 0 0 ' N 0 1 ° 5 6 ' 2 6 " W 33" R C P 33" R C P SSSS S S S S S S S S S SS S E E E E E E E E E E E E E E E E EEEEEEEEEEEE Conc. SS SS SS SS SS SS SS SS SS SS SSSSSS W SSSSSS 19 5 195 20 0 20 0 205 205 170 175 180 185 190 195 175 180 185 190 195 200 165 170 175 180 185 190 195 2 0 0 17 017 5180 18 5 190 195 165 170 175 180 185 190 195 16 5 17 0 175 180 185 19 0 195 200 195 195 200 205 30 " R C P W W W W W W RW 18 " R C P 19 8 19 919 9 198 197 196 20 1 200 20 0 199 200 20 1 201 2 0 2 20 3 2 0 4 204 203 200 VAN ACCESSIBLE EV VAN ACCESSIBLE NOPARKING NO PARKING EV PARKINGONLY EV PARKINGONLY EV PAR K I N G ONL Y VAC U U M VAN ACC E S S I B L E NO PA R K I N G DMA EXHIBIT Project No. Drawing No. Scale As Noted 10769 Woodside Ave, Suite 204Santee, CA 92071 (619) 971-7514 Palomar AirportRoad Car Wash 1991 Palomar AirportRoad, Carlsbad, CA 92011 472 bashar@najars.com OMA AREAS TOTAL NEW/REPLACE UNDISTURBED PERVIOUS OMA AREA (SF) IMP. AREA (SF) IMP(S~~EA AREA (SF) 1 39,164 2 183,394 3 12,909 4 22,530 5 4,820 6 15,833 7 9,973 8 1,862 9 86 10 6,626 NOTES: BERM SOUTH OF BMP-A 198.08 TOP OF BERM 197.58 FG 0 0 5,654 0 0 8,683 0 0 86 0 650 38,514 717 182,677 3,844 3,411 19,274 3,256 4,820 0 4,639 2,511 1,054 8,919 1,862 0 0 0 5,590 1,036 OMA TYPE SELF-MITIGATING SELF-MITIGATING BIOFIL TRA TION BMP-A BIOFIL TRA TION BMP-B SELF-MITIGATING SELF-MITIGATING DE MINIMIS DCV REQUIRED (CF) 0 0 512 0 0 701 0 0 0 0 BMP-A WEST BASIN GAl'1UIE1 \ ..... 200' SDG&E I 20' SDG&E TREE TRANSMISSION EASEMENT i TRIMMING EASEMENT 202.05TW 12" THICK AGGREGATE STORAGE; EX. 200.85FG FILTER COURSE LAYER (6" THICK -WASHED PEA GRAVEL) CLASS 2 PERMEABLE PER CAL TRANS 68-1.025 *3" WELL-AGED SHREDDED HARDWOOD MULCH THAT HAS BEEN STOCKPILED OR STORED FOR ATLEAST 12 MONTHS IMPERMEABLE LINER. 30MILS MIN .. SOIL MIX CONSISTS OF: 85-55% WASHED SAND 8-12% FINES (SILT & CLAY) 3-5% ORGANIC MATTER OUTFALL 12" PVC STORM DRAIN PIPE CONNECT TO POINT OF DISCHARGE AT EXISTING 33" STORM PIPE 196.631E 6" PERFORATED UNDERDRAIN PIPE WITH AN END CAP AND A 0.58" DIAMETER ORIFICE BIOFIL TRA TION BASIN SCALE: N.T.S. I LEGEND: PROPERTY LINE DIRECTION OF FLOW DMA LIMIT NEW/REPLACE IMPER'I/OUS AREA UNDISTURBED IMPER'I/OUS AREA PER'I/OUS AREA ~ • :_ .. ~ ---, ·-,-· < ' • • --~ , '~ /lj;, ~ ~ / :; 1/, ; ; ; ; ; ; / ; / ; ; / ; ; / ; 30" DRAIN BASIN FOR EMERGENCY OVERFLOW • FITTED WITH FLOGARD CATCH BASIN INSERT FILTER PER DETAIL 3, SHEET 7 200.63TG 202.05TW WALL OPENING / 1 201.88 TC SEE DETAIL THIS rr.J-, SHEET I L 18" I I 201.38 FL I I I 7.4" FREEBOARD 32" OPENING ---------- -------c::,--------c::,--------c::,--------c::,- TC -- 6" FL 3' WIDE RIBBON GUTTER (IF APPLICABLE) WALL OPENING DETAIL ~, "~~ 0 40' 80' SCALE: 1 "=40' NAJARS ENGINEERING, INC. ATTACHMENT 1C Appendix K: Forms and Checklists K-2 Jan. 2023 Harvest and Use Feasibility Checklist Form K-7 1. Is there a demand for harvested water (check all that apply) at the project site that is reliably present during the wet season? Toilet and urinal flushing Landscape irrigation Other:______________ 2. If there is a demand; estimate the anticipated average wet season demand over a period of 36 hours. Guidance for planning level demand calculations for toilet/urinal flushing and landscape irrigation is provided in Section B.3.2. [Provide a summary of calculations here] 3. Calculate the DCV using worksheet B-2.1. DCV = __________ (cubic feet) 3a. Is the 36 hour demand greater than or equal to the DCV? . Yes / No 3b. Is the 36 hour demand greater than 0.25DCV but less than the full DCV? Yes / No 3c. Is the 36 hour demand less than 0.25DCV? Yes Harvest and use appears to be feasible. Conduct more detailed evaluation and sizing calculations to confirm that DCV can be used at an adequate rate to meet drawdown criteria. Harvest and use may be feasible. Conduct more detailed evaluation and sizing calculations to determine feasibility. Harvest and use may only be able to be used for a portion of the site, or (optionally) the storage may need to be upsized to meet long term capture targets while draining in longer than 36 hours. Harvest and use is considered to be infeasible. Is harvest and use feasible based on further evaluation? Yes, refer to Appendix E to select and size harvest and use BMPs. No, select alternate BMPs. Note: 36-hour demand calculations are for feasibility analysis only. Once feasibility analysis is complete the applicant may be allowed to use a different drawdown time provided they meet the 80% annual capture standard (refer to B.4.2) and 96-hour vector control drawdown requirement. BMP-A 541-3A4, 5, 7 X X x x xxx 1,073 (7 gal x 3 employees x 1.5 days) + ( 5.5acre x 390gal/acre/36hour) = 2,177 gal = 291 CF x ( v-------...__ D ........___ __.-/ 1t 1t ~ ¢::l ¢:I □ □ □ ATTACHMENT 1D Appendix D: Geotechnical Engineer Analysis This section is only applicable if the analysis of infiltration restrictions is performed by a licensed engineer practicing in geotechnical engineering. The SWQMP Preparer and Geotechnical Engineer must work collaboratively to identify any infiltration restrictions identified in Table D.1-1 below. Upon completion of this section, the Geotechnical Engineer must characterize each DMA as Restricted or Unrestricted for infiltration and provide adequate support/ discussion in the geotechnical report. A DMA is considered restricted when one or more restrictions exist which cannot be reasonably resolved through site design changes. Table D.1-1: Considerations for Geotechnical Analysis of Infiltration Restrictions Mandatory Considcra tions Optional Considerations Result Restriction Element BMP is within 100' of Contaminated Soils BMP is within 100' of Industrial Activities Lacking Source Control BMP is within 100' of Well/Groundwater Basin BMP is within SO' of Septic Tanks/Leach Fields BMP is within 10' of Structures/Tanks/Walls BMP is within 10' of Sewer Utilities BMP is within 10' of Groundwater Table BMP is within Hydri.c Soils BMP is within Highly Llquefiable Soils and has Connectivity to Structures BMP is within 1.5 Times the Height of Adjacent Steep Slopes (2':25%) County Staff has Assigned "Restricted" Infiltration Category BMP is within Predominantly Type D Soil BMP is within 1 O' of Property Line BMP is within Fill Depths of 2':S' (Existing or Proposed) BMP is within 10' of Underground Utilities BMP is within 250' of Ephemeral Stream Other (Provide detailed geotechnical support) Based on examination of the best available information, Is Element Applicable? (Yes/No) I 0 □ I have not identified any restrictions above. Unrestricted Based on examination of the best available information, )a. I have identified one or more restrictions above. Restricted Table D.1-1 1s divided into Mandatory Considerations and Optional Considerations. Mandatory D-1 Sept. 2021 Appendix D: Geotechnical Engineer Analysis Considerations include elements that may pose a significant risk to human health and safety and must always be evaluated. Optional Considerations include elements that are not necessarily associated with human health and safety, so analysis is not mandated through this guidance document. All elements presented in this table are subject to the discretion of the Geotechnical Engineer if adequate supporting information is provided. Applicants must evaluate infiltration restrictions through use of the best available data. A list of resources available for evaluation is provided in Section B.2 • This section is only applicable if the detennination of design infiltration rates is performed by a licensed engineer practicing in geotechnical engineering. The guidance in this section identifies methods for identifying observed infiltration rates, corrected infiltration rates, safety factors, and design infiltration rates for use in structural BMP design. Upon completion of this section, the Geotechnical Engineer must recommend a design infiltration rate for each DMA and provide adequate support/ discussion in the geotechnical report. Table D.2-1: Elements for Determination of Design In.filtration Rates .Item Value Unit ' J Initial Infiltration Rate o:;1~ Identify per Section D.2.1 in/hr Corrected Infiltration Rate 0. \6 Identify per Section D.2.2 in/hr Safety Factor °:), S unitless Identify per Section D.2.3 Design Infiltration Rate o,os in/hr Corrected Infiltration Rate + Safety Factor D-2 Sept. 2021 ~-.1 . ' ;,_;•. : Consideration -·•--· ~ .. , Suitability Assessment (A) Design (B) Appendix D: Geotechnical Engineer Analysis Table D.2-3: Determination of Safety Factor .. Assigrie·d Factor-Product (p) . --.. ; .Weight,(w), Value:(v) p=wxv Infiltration Testing Method 0.25 O,S 0 Soil Texture Class 0.25 Refer to 0,1-t; Soil Variability 0.25 TableD .2-4 O~'ZS Depth to Groundwater/Obstruction 0.25 0,7-$ Suitability Assessment Safety Factor, SA = LP \ .1-s Pretreatment 0.50 \ 0.25 Refer to Resiliency Table D.2-4 Q,$0 Compaction 0.25 o.~ Design Safety Factor, Sa = LP 2 -e~ Safety Factor, S = SA x Sa ~-S (Must be always greater than or equal to 2) The geotechnical engineer should reference Table D .2-4 below in order to determine appropriate factor values for use in the table above. The values in the table below are subjective in nature and the geotechnical engineer may use professional discretion in how the points are assigned. 6.3 Infiltration Study Conclusions The preliminary site plan for the subject property dated August 11, 2021 prepared by NAJARS Engineering proposes bioretention areas located at the west portion of the lot. The proposed bioretention areas are mapped adj acent to existing 2:1 (run: rise) to 3:1 descending slopes with a setback less than 1.5 times the height of the slope (Water infiltration and saturation of the sloping soils at the proposed biofiltration area may increase the potential of slope failure). We performed planning phase infiltration testing as part of our study and a design infiltration rate of 0.05 inches/hour was obtained. However, based upon the location of the proposed infiltration BMPs and infiltration restrictions set forth on the City of Carlsbad BMP Design Manual, infiltration of any volume is considered to be restricted within the area of the proposed basins. We recommend that no infiltration be used for this project. If bioretention areas are to be used, all biorctcntion areas shall have solid concrete bases and/or impermeable liners to prohibit storm water soil infiltration. D-12 Sept. 2021 ATTACHMENT 1E Appendix B: Storm Water Pollutant Control Hydrologic Calculations and Sizing Methods for Structural BMPs www.sandiegocounty.gov/stormwater B-7 Effective September 15, 2020 Figure B.1-1: 85th Percentile 24-hour Isopluvial Map PROJECT LOCATION D = 0.69 inches San Diego County 85 th Percentile lsopluvials Legend --85th PERCENTILE ISOPLUVIAL c ·.·_~_'_J INCORPORATED CITY NOTE: The 85th percentile is a 24 hour rainfall total. It represetns a value such that 85% of the obseived 24 hour rainfall totals will be less than that value. N + ~Milts 0 1 2 4 8 8 THIS141\.PID'\T/AISPROVIOED1',!THOUTWl<RAANf'IOFAHYKIND,EITttER EX.PRE880ftlMPLIED.NO..UOM3BIJTNOTllWITEOTOTMEIMPLIB'.l WIRRAHTIES OF MERCH,I.NTABIUTY .o.NO FITNESS FOR /A PII.Rll::::UI.AFI PURPOSE Hdlllhlp,,:,,IUCl....,_rdon'N!ICl'lfrcrohtSt.NO,,l,Q ~-s,,,_.-........:11e_..._ .............. ,_, ~OISANOAG n,_pfOOIJClo,.,oo,uo,wo, ___ _ _ g,,.....,i,y~~-~~IOS..018 1"'5111P• <XJPl"V!l«l1>yR-1i1cN,-,&~R•~111cav,or,__ alor...,,pon,_ ...,_,.,,_,,.,...,.,_ w-..it.----ofRardM<:Nlll,I~ 0opyrw,cSlnGIS201• .\·Riglll-F'ullle>10lflilleglloatceCMbe --.~-oa,,g,a~-lllm OY\"201~ P'FbldOlNldrHOM_ATLAS_l4PCTIJi5_REVISITED_101"- 'f'CTIJi5_DISPI.AY11.a Category #Description i ii Units 1 Drainage Basin ID or Name BMP A BMP B unitless 2 85th Percentile 24-hr Storm Depth 0.69 0.69 inches 3 Impervious Surfaces Not Directed to Dispersion Area (C=0.90) 9,498 13,322 sq-ft 4 Semi-Pervious Surfaces Not Serving as Dispersion Area (C=0.30)sq-ft 5 Engineered Pervious Surfaces Not Serving as Dispersion Area (C=0.10) 3,411 2,511 sq-ft 6 Natural Type A Soil Not Serving as Dispersion Area (C=0.10)sq-ft 7 Natural Type B Soil Not Serving as Dispersion Area (C=0.14)sq-ft 8 Natural Type C Soil Not Serving as Dispersion Area (C=0.23)sq-ft 9 Natural Type D Soil Not Serving as Dispersion Area (C=0.30)sq-ft 10 Does Tributary Incorporate Dispersion, Tree Wells, and/or Rain Barrels? No No yes/no 11 Impervious Surfaces Directed to Dispersion Area per SD-B (Ci=0.90) sq-ft 12 Semi-Pervious Surfaces Serving as Dispersion Area per SD-B (Ci=0.30)sq-ft 13 Engineered Pervious Surfaces Serving as Dispersion Area per SD-B (Ci=0.10)sq-ft 14 Natural Type A Soil Serving as Dispersion Area per SD-B (Ci=0.10)sq-ft 15 Natural Type B Soil Serving as Dispersion Area per SD-B (Ci=0.14)sq-ft 16 Natural Type C Soil Serving as Dispersion Area per SD-B (Ci=0.23)sq-ft 17 Natural Type D Soil Serving as Dispersion Area per SD-B (Ci=0.30)sq-ft 18 Number of Tree Wells Proposed per SD-A # 19 Average Mature Tree Canopy Diameter ft 20 Number of Rain Barrels Proposed per SD-E # 21 Average Rain Barrel Size gal 22 Total Tributary Area 12,909 15,833 sq-ft 23 Initial Runoff Factor for Standard Drainage Areas 0.69 0.77 unitless 24 Initial Runoff Factor for Dispersed & Dispersion Areas 0.00 0.00 unitless 25 Initial Weighted Runoff Factor 0.69 0.77 unitless 26 Initial Design Capture Volume 512 701 cubic-feet 27 Total Impervious Area Dispersed to Pervious Surface 0 0 sq-ft 28 Total Pervious Dispersion Area 0 0 sq-ft 29 Ratio of Dispersed Impervious Area to Pervious Dispersion Area n/a n/a ratio 30 Adjustment Factor for Dispersed & Dispersion Areas 1.00 1.00 ratio 31 Runoff Factor After Dispersion Techniques 0.69 0.77 unitless 32 Design Capture Volume After Dispersion Techniques 512 701 cubic-feet 33 Total Tree Well Volume Reduction 0 0 cubic-feet 34 Total Rain Barrel Volume Reduction 0 0 cubic-feet 35 Final Adjusted Runoff Factor 0.69 0.77 unitless 36 Final Effective Tributary Area 8,907 12,191 sq-ft 37 Initial Design Capture Volume Retained by Site Design Elements 0 0 cubic-feet 38 Final Design Capture Volume Tributary to BMP 512 701 cubic-feet False False Automated Worksheet B.1: Calculation of Design Capture Volume (V2.0) Dispersion Area, Tree Well & Rain Barrel Inputs (Optional) Standard Drainage Basin Inputs Results Tree & Barrel Adjustments Initial Runoff Factor Calculation Dispersion Area Adjustments No Warning Messages Category #Description i ii Units 1 Drainage Basin ID or Name BMP A BMP B unitless 2 85th Percentile Rainfall Depth 0.69 0.69 inches 3 Predominant NRCS Soil Type Within BMP Location D D unitless 4 Is proposed BMP location Restricted or Unrestricted for Infiltration Activities? Restricted Restricted unitless 5 Nature of Restriction Soil Type Soil Type unitless 6 Do Minimum Retention Requirements Apply to this Project? Yes Yes yes/no 7 Are Habitable Structures Greater than 9 Stories Proposed? No No yes/no 8 Has Geotechnical Engineer Performed an Infiltration Analysis? Yes Yes yes/no 9 Design Infiltration Rate Recommended by Geotechnical Engineer 0.000 0.000 in/hr 10 Design Infiltration Rate Used To Determine Retention Requirements 0.000 0.000 in/hr 11 Percent of Average Annual Runoff that Must be Retained within DMA 1.5% 1.5% percentage 12 Fraction of DCV Requiring Retention 0.01 0.01 ratio 13 Required Retention Volume 5 7 cubic-feet False False Automated Worksheet B.2: Retention Requirements (V2.0) Advanced Analysis Basic Analysis Result No Warning Messages Category #Description i ii Units 1 Drainage Basin ID or Name BMP A BMP B sq-ft 2 Design Infiltration Rate Recommended 0.000 0.000 in/hr 3 Design Capture Volume Tributary to BMP 512 701 cubic-feet 4 Is BMP Vegetated or Unvegetated?Vegetated Vegetated unitless 5 Is BMP Impermeably Lined or Unlined?Lined Lined unitless 6 Does BMP Have an Underdrain?Underdrain Underdrain unitless 7 Does BMP Utilize Standard or Specialized Media?Standard Standard unitless 8 Provided Surface Area 758 956 sq-ft 9 Provided Surface Ponding Depth 12 12 inches 10 Provided Soil Media Thickness 18 18 inches 11 Provided Gravel Thickness (Total Thickness)18 18 inches 12 Underdrain Offset 3 3 inches 13 Diameter of Underdrain or Hydromod Orifice (Select Smallest)0.50 0.58 inches 14 Specialized Soil Media Filtration Rate in/hr 15 Specialized Soil Media Pore Space for Retention unitless 16 Specialized Soil Media Pore Space for Biofiltration unitless 17 Specialized Gravel Media Pore Space unitless 18 Volume Infiltrated Over 6 Hour Storm 0 0 cubic-feet 19 Ponding Pore Space Available for Retention 0.00 0.00 unitless 20 Soil Media Pore Space Available for Retention 0.05 0.05 unitless 21 Gravel Pore Space Available for Retention (Above Underdrain)0.00 0.00 unitless 22 Gravel Pore Space Available for Retention (Below Underdrain)0.40 0.40 unitless 23 Effective Retention Depth 2.10 2.10 inches 24 Fraction of DCV Retained (Independent of Drawdown Time)0.26 0.24 ratio 25 Calculated Retention Storage Drawdown Time 120 120 hours 26 Efficacy of Retention Processes 0.27 0.26 ratio 27 Volume Retained by BMP (Considering Drawdown Time)139 179 cubic-feet 28 Design Capture Volume Remaining for Biofiltration 373 522 cubic-feet 29 Max Hydromod Flow Rate through Underdrain 0.0127 0.0172 cfs 30 Max Soil Filtration Rate Allowed by Underdrain Orifice 0.72 0.78 in/hr 31 Soil Media Filtration Rate per Specifications 5.00 5.00 in/hr 32 Soil Media Filtration Rate to be used for Sizing 0.72 0.78 in/hr 33 Depth Biofiltered Over 6 Hour Storm 4.34 4.67 inches 34 Ponding Pore Space Available for Biofiltration 1.00 1.00 unitless 35 Soil Media Pore Space Available for Biofiltration 0.20 0.20 unitless 36 Gravel Pore Space Available for Biofiltration (Above Underdrain)0.40 0.40 unitless 37 Effective Depth of Biofiltration Storage 21.60 21.60 inches 38 Drawdown Time for Surface Ponding 17 15 hours 39 Drawdown Time for Effective Biofiltration Depth 30 28 hours 40 Total Depth Biofiltered 25.94 26.27 inches 41 Option 1 - Biofilter 1.50 DCV: Target Volume 559 783 cubic-feet 42 Option 1 - Provided Biofiltration Volume 559 783 cubic-feet 43 Option 2 - Store 0.75 DCV: Target Volume 279 392 cubic-feet 44 Option 2 - Provided Storage Volume 279 392 cubic-feet 45 Portion of Biofiltration Performance Standard Satisfied 1.00 1.00 ratio 46 Do Site Design Elements and BMPs Satisfy Annual Retention Requirements?Yes Yes yes/no 47 Overall Portion of Performance Standard Satisfied (BMP Efficacy Factor)1.00 1.00 ratio 48 Deficit of Effectively Treated Stormwater 0 0 cubic-feet Biofiltration Calculations False False False False Result False False No Warning Messages Retention Calculations Automated Worksheet B.3: BMP Performance (V2.0) False False BMP Inputs ATTACHMENT 1F TRASH CAPTURE DEVICES: CATCH BASIN INSERT FILTER: Proposing an Oldcastle Infrastructure device 30" FloGard+Plus Catchbasin Insert Filter, Round Inlet forboth BMP-A and BMP-B for trash capture (See sheet 7 on grading plans for detail). The FloGard +Plus Catchbasin Trash Screen Insert device is certified by State Water Resources Control Board. The trashcapture device was sized to be the same size of the storm drain system (BMP Design Manual, Section4.4.2.3). Please see next pages for fact sheets and specification sheets. TRENCH DRAIN FILTER: Proposing an Oldcastle Infrastructure device FloGard+Plus Trench Drain Filter for a proposed TrenchGrate for trash capture (See sheet 7 on grading plans for detail). The FloGard+Plus Trash Screen Insertdevice is certified by State Water Resources Control Board. The trash capture device was sized to bethe same pipe size of the pipe exiting the trench grate. Please see next pages for fact sheets and specification sheets. CATCH BASIN INSERT FILTER 7100 Longe Street Stockton, CA 95304 _____________________________________________________________________________________ June 9, 2021 Mr. Leo Cosentini California State Water Resources Control Board Division of Water Quality P.O. Box 100 Sacramento, CA 95812-0100 RE: Former Product Name: Flo Guard + Plus® Catchbasin Trash Screen Insert, Combination Inlet Style Drop in Basket (KS-1) Dear Mr. Cosentini, Oldcastle Infrastructure™ is pleased to submit this updated fact sheet. The enclosed updated fact sheet has been compiled in conformance with the Trash Treatment Control Device Application Requirements. Oldcastle has removed one configuration of the original combination and has renamed the system. We sincerely appreciate your attention to make the following changes: Update Name: FloGard® Curb Inlet Basket (CIB) Remove “formerly KriStar Enterprises Inc.” (acquisition was 2014, pre-trash requirements; systems have been updated; KriStar reference confuses customers) Fact Sheet: Change from KS-1 to OI-1 Thank you for your consideration of this application. If any additional information is needed, please contact Laraine Sanfilippo per information provided below. Respectfully, Oldcastle Infrastructure™, A CRH Company Laraine Sanfilippo Southwest Region Regulatory Manager laraine.sanfilippo@oldcastle.com (619) 481-0608 0 Oldcastle lnfrast~~S!~.~~- i 1. Cover Letter a. Product Name and General Description of Device The FloGard® Curb Inlet Basket (FloGard® CIB) is a specialized inlet filter used specifically for catch basins with curb inlets. The FloGard® CIB provides physical screening of pollutants such as gross solids, trash and debris. It is ideally suited for removal of primary pollutants from paved surfaces in commercial and residential areas. b. Applicant’s Contact Information and Location Chief Executive Officer: Matt Clemson Oldcastle Infrastructure™ Vice President and General Manager, Stormwater matt.clemson@oldcastle.com (470) 261-7620 Authorized Representative: Laraine Sanfilippo Oldcastle Infrastructure™ Regulatory Manager laraine.sanfilippo@oldcastle.com (619) 481-0608 Mailing Address: Oldcastle Infrastructure, Stormwater c/o Laraine Sanfilippo 10441 Vine Street Lakeside, CA 92040 c. Manufacturer’s Website for Device https://oldcastleinfrastructure.com/brands/flogard/ ii d. Manufacturing Location for Device Manufacturer Name: Oldcastle Infrastructure™ Manufacturer Address: 7100 Longe Street Stockton, CA 95304 Manufacturer Phone: (800) 579-8819 Manufacturer Representative: Gary Jones (888) 950-8826 e. Summary of Field/Lab Testing Results All trash and debris for the designed storm event is captured within the FloGard® CIB due to the basket’s full capture 4.9mm perforations. No lab testing has been recorded for the FloGard® CIB. f. Summary of Device Limitations, and Operational, Sizing, and Maintenance Considerations FloGard® CIB is designed for ease of use and compatibility with most catch basin configurations. Standard sizes are available and custom units will be considered as unusual or challenging projects arise. Please contact an Oldcastle Infrastructure™ representative for sizing assistance. Maintenance on any stormwater management device is mandatory. The schedule of maintenance will depend on site conditions and should be determined during the first year of operation by assessing capacity levels after large storm events. Consistent maintenance is imperative to ensure constant trash capture is attained and bypass does not occur. g. Description, or List of Locations, where Device has been installed FloGard® CIB has been installed throughout California and nationally to meet trash capture demands. Please contact an Oldcastle Infrastructure™ representative for more detailed information. iii h. Certification 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 of my 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. 4/23/2021 ___________________________________ ______________ Matt Clemson Date Oldcastle Infrastructure™ General Manager, Stormwater matt.clemson@oldcastle.com (470) 261-7620 4/23/2021 ___________________________________ ______________ Laraine Sanfilippo Date Oldcastle Infrastructure™ Regulatory Manager laraine.sanfilippo@oldcastle.com (619) 481-0608 1 2. Table of Contents Table of Contents 1. Cover Letter ................................................................................................................................... i a. Product Name and General Description of Device ............................................................................... i b. Applicant’s Contact Information and Location ..................................................................................... i c. Manufacturer’s Website for Device ...................................................................................................... i d. Manufacturing Location for Device ..................................................................................................... ii e. Summary of Field/Lab Testing Results ................................................................................................. ii f. Summary of Device Limitations, and Operational, Sizing, and Maintenance Considerations .............. ii g. Description, or List of Locations, where Device has been installed ..................................................... ii h. Certification ......................................................................................................................................... iii 2. Table of Contents ...........................................................................................................................1 3. Physical Description .......................................................................................................................3 a. Trash Capture: Description of Device ................................................................................................... 3 b. Peak Flows/ Trash Volumes ................................................................................................................. 3 c. Hydraulic Capacity ................................................................................................................................ 3 1) Hydraulic Capacity Table ............................................................................................................... 3 2) Alternative Configuration Hydraulic Capacity Table ..................................................................... 3 3) Hydraulic Capacity Calculations or Field Test Results ................................................................... 4 d. Comparison Table ................................................................................................................................ 4 e. Design Drawings ................................................................................................................................... 4 f. Alternative Configurations .................................................................................................................... 4 g. Internal Bypass ..................................................................................................................................... 4 h. Previously Trapped Trash ..................................................................................................................... 4 i. Calibration Feature ............................................................................................................................... 4 j. Photos ................................................................................................................................................... 5 k. Material Type ....................................................................................................................................... 6 l. Design Life ............................................................................................................................................. 6 4. Installation Guidance .....................................................................................................................7 a. Installation Procedures ........................................................................................................................ 7 b. Device Installation Limitations/ Non-standard Installation Procedures .............................................. 7 c. Diagnosing and Correcting Installation Errors ...................................................................................... 7 2 5. Operation and Maintenance Information ........................................................................................8 a. Device Inspection Procedures and Frequency Considerations ............................................................ 8 b. Device Maintenance Frequency Related to Hydraulic Capacity .......................................................... 8 c. Maintenance Procedures ..................................................................................................................... 8 d. Maintenance Equipment and Materials .............................................................................................. 9 e. Effects of Deferred Maintenance ......................................................................................................... 9 f. Repair Procedures ................................................................................................................................. 9 6. Vector Control Accessibility .......................................................................................................... 10 a. Date of Submittal to Mosquito Vector Control Association .............................................................. 10 b. Description of Access for Vector Control Personnel .......................................................................... 10 c. Letter of Verification from Mosquito Vector Control Association ..................................................... 10 7. Reliability Information.................................................................................................................. 11 a. Estimated Design Life ......................................................................................................................... 11 b. Warranty Information ........................................................................................................................ 11 c. Customer Support Information .......................................................................................................... 11 8. Field/Lab Testing Information and Analysis ................................................................................... 12 a. Available Field/Lab Testing Information – Devices with 5mm Screen ............................................... 12 b. Available Field/Lab Testing Information – Devices without 5mm Screen ......................................... 12 APPENDIX A ..................................................................................................................................... 13 Hydraulic Capacity Calculations .............................................................................................................. 14 APPENDIX B ..................................................................................................................................... 16 Design Drawings ...................................................................................................................................... 17 APPENDIX C ..................................................................................................................................... 18 MVCAC Approval Document ................................................................................................................... 19 3 3. Physical Description a. Trash Capture: Description of Device FloGard® CIB is configured with openings less than 4.9mm to ensure trash capture regulations and requirements are met. The basket design location within a catch basin is at the inlet ensuring all flows and debris are processed through the screened basket. The FloGard® CIB sizing is dependent on curb inlet size with bypass flows accounted for on all required designs. b. Peak Flows/ Trash Volumes The tables in Section 3c.1. Hydraulic Capacities list Peak Flow and Trash (Storage) Volume capacities for 10 standard sizes of the FloGard® CIB. c. Hydraulic Capacity 1) Hydraulic Capacity Table Notes: *Additional sizes available per region and request. Please speak with an Oldcastle Infrastructure representative for more detailed information. 2) Alternative Configuration Hydraulic Capacity Table FloGard® CIB does not have alternative configurations. Empty 25% Full 50% Full 75% Full 24 7.37 5.53 3.69 1.84 0.70 1.34 30 9.12 6.84 4.56 2.28 0.81 1.78 36 10.86 8.14 5.43 2.71 0.91 2.23 42 12.60 9.45 6.30 3.15 1.02 2.67 48 14.34 10.76 7.17 3.59 1.13 3.12 60 16.09 12.06 8.04 4.02 1.23 3.56 72 19.57 14.68 9.78 4.89 1.45 4.45 84 23.05 17.29 11.53 5.76 1.66 5.35 96 26.54 19.90 13.27 6.63 1.87 6.24 120 31.77 23.82 15.88 7.94 2.19 7.57 Filtered Flow (CFS)Storage Capacity (CF) Peak/Bypass Flow (CFS) Hydraulic Capacity FloGard® CIB - Capacities Catch Basin Width (in) 4 3) Hydraulic Capacity Calculations or Field Test Results Hydraulic capacity calculations for FloGard® CIB are included in Appendix A. d. Comparison Table The tables in Section 3c.1. Hydraulic Capacities list storage and hydraulic capacities for 10 standard sizes of the FloGard® CIB. e. Design Drawings Design drawings for FloGard® CIB are included in Appendix B. f. Alternative Configurations FloGard® CIB does not have alternative configurations. g. Internal Bypass Bypass is designed to occur in situations that 100% storage capacity has been met (which should be avoided through regular inspection and maintenance). In situations where bypass occurs, FloGard® CIB is designed to hydraulically contain the previously captured trash and allow flows to enter and exit the system at the top of the basket. h. Previously Trapped Trash The basket is hydraulically designed to retain previously captured trash. If the system achieves bypass, some previously captured trash may reanimate and discharge downstream; however, the design is meant to prevent this occurrence. So long as the system is regularly maintained and bypass is avoided, no previously trapped trash will discharge from the system. i. Calibration Feature FloGard® CIB does not include an adjustable calibration feature. 5 j. Photos Figure 1. Installed FloGard® CIB – empty (view from curb). Figure 2. Installed FloGard® CIB – full (view from curb). Figure 3. Installed FloGard® CIB - view from manhole. Figure 4. Installed FloGard® CIB – bottom of catch basin. Figure 5. Installed FloGard® CIB – double basket for wide application. I ,._~ I • ---------:.:::~~-~--·· . , ' -• -'-w •, ---;~:_:.. • ,. -~ ,-... • -< ._. 6 k. Material Type The FloGard® CIB system consists of mounting angles and basket with trash capture compliant screen. The mounting angles and basket are 304 stainless-steel. The screen perforations measure 4.9mm for trash capture compliance. l. Design Life The estimated design life for the FloGard® CIB is 25 years. Design life estimate is dependent on the proper design, installation and maintenance of the system and assume no extraordinary circumstances. 7 4. Installation Guidance a. Installation Procedures Oldcastle Infrastructure™ recommends referring to approved drawings and field measurements to ensure site conditions are properly met prior to installation. It is recommended that catch basins are properly cleaned and inspected for any damage or irregularities prior to installing any devices. If installation points on walls are irregular or damaged, grind the concrete down to create an even mounting surface. 1. Remove manhole cover and set aside. 2. Mark locations along inlet wall of catch basin directly beneath curb inlet for the corrosion- resistant anchors (type 304 stainless steel) to be placed. 3. Install wall anchors at marked locations and attach basket(s). 4. Basket(s) must be installed to direct all flows into the device. a. Distance (gaps) between the inlet wall and device shall not exceed one half inch. Seal gaps of less than one half inch with flexible weatherproof sealant, as approved by agency. b. Basket(s) must extend across entire length of curb inlet to ensure all trash and debris is directed through the system before being discharged downstream. b. Device Installation Limitations/ Non-standard Installation Procedures Installation to help meet trash TMDLs or the statewide trash amendment are often retrofit. In the case of retrofit, the site should be inspected prior to installation to be sure record drawings are correct. The trash capture system should be designed and fabricated to meet existing site conditions. c. Diagnosing and Correcting Installation Errors Oldcastle Infrastructure™ FloGard® CIB is designed for simple installation. Once installed, ensure a proper fit by performing a visual inspection. If all components are not secure and in proper placement, remove and reinstall by following Section 4a. Installation Procedures. If questions during or after installation, please contact Oldcastle Infrastructure™ for project specific assistance. 8 5. Operation and Maintenance Information a. Device Inspection Procedures and Frequency Considerations Oldcastle Infrastructure™ recommends the following timing of inspections to ensure proper maintenance can be conducted: Oldcastle Infrastructure™ recommends that installed FloGard® CIB be serviced on a recurring basis. Ultimately, the frequency depends on the amount of runoff, pollutant loading and interference from debris (leaves, vegetation, cans, paper, etc.); however, it is recommended that each installation be inspected a minimum of three times per year. Oldcastle Infrastructure™ guidelines for the timing of inspections are as follows: 1. For areas with a definite rainy season: Prior to, during and following the rainy season. 2. For areas subject to year-round rainfall: On a recurring basis (at least three times per year). 3. For areas with winter snow and summer rain: Prior to and just after the snow season and during the summer rain season. 4. For installed devices not subject to the elements (washracks, parking garages, etc.): On a recurring basis (no less than three times per year). b. Device Maintenance Frequency Related to Hydraulic Capacity Due to the configuration of FloGard® CIB, maintenance does not rely on hydraulic capacity, but rather on storage (trash and debris) capacity. Maintenance should be implemented between storm events if basket is at more than 75% capacity. Maintenance must be implemented immediately if basket is at 100% capacity and in bypass. c. Maintenance Procedures Oldcastle Infrastructure™ recommends the following maintenance procedures: 1. The manhole cover shall be removed and set to one side. The catch basin shall be visually inspected for defects and possible illegal dumping. If illegal dumping has occurred, the proper authorities and property owner representative shall be notified as soon as practicable. 2. Using an industrial vacuum, the collected materials shall be removed from the basket. 3. When all collected materials have been removed, the basket can be inspected for continued serviceability. Minor damage or defects found shall be corrected on-the-spot and a notation made on the Maintenance Record. More extensive deficiencies that cannot be fixed on-site should be addressed through a maintenance service or by replacement of parts. 9 4. After inspection is complete and system is certified as functional, replace manhole cover. 5. All removed debris shall be disposed of in accordance with local, state, and federal agency requirements. d. Maintenance Equipment and Materials The following equipment should be used to conduct maintenance on the FloGard® CIB: Personal Protective Equipment (PPE) o i.e. hardhat, gloves, appropriate footwear, safety glasses, etc. Industrial vacuum Dumpster or truck bed for disposal of collected trash and debris Tools for uninstallation and reinstallation o Hammer drill, or similar, to drill through concrete and secure drive pins o Crow bar to help manhole cover from catch basin e. Effects of Deferred Maintenance Deferred maintenance may allow the FloGard® CIB to achieve capacity and go into bypass. Once the system is in bypass, no additional trash or debris will be collected. If bypass occurs, the debris in the bypass flows will pass through the system and discharge in receiving waters. f. Repair Procedures If inspection of the condition of the FloGard® CIB reveals damage and need for repair, the damage should be documented, photographed, and then submitted to Oldcastle Infrastructure™ for assessment. Engineering and Operations staff at Oldcastle Infrastructure™ will evaluate the damage and recommend a repair. Responsibility for the repair will depend on the cause of damage. Field repairs can be implemented if issues or damage is minimal. If inspection of the condition of the FloGard® CIB (basket) reveals extensive damage that cannot be repaired in field, a replacement basket will need to be installed to ensure proper trash capture capacity is attained. 10 6. Vector Control Accessibility a. Date of Submittal to Mosquito Vector Control Association Application for approval of the FloGard® CIB was initially submitted to the Mosquito and Vector Control Association of California (MVCAC) on May 4, 2021. This submittal was made concurrently with the original California Water Boards Trash Treatment Control Device Updated Fact Sheet submittal. b. Description of Access for Vector Control Personnel The bottom of the catch basin (includes any area beneath the basket) can be easily accessed through the manhole. The manhole can be opened/removed for visual inspection and physical treatment of the catch basin. Due to the location of the basket within the catch basin, complete access is available to the entire bottom of catch basin, the inside of the basket, and the entrance to all outlet pipes within the basin for both inspection and treatment. c. Letter of Verification from Mosquito Vector Control Association Refer to Appendix C for letter of verification from MVCAC, Mosquito and Vector Control Association of California, dated June 9, 2021. Approval letter verifies all design requirements have been met and allow for full visual and treatment access to all areas. 11 7. Reliability Information a. Estimated Design Life The estimated design life for the FloGard® CIB is 25 years. Design life estimate is dependent on the proper design, installation and maintenance of the system and assume no extraordinary circumstances. b. Warranty Information Oldcastle Infrastructure™ warranties FloGard® CIB to be free from manufacturing defects for a period of one (1) year from the date of purchase. Abusive treatment, neglect or improper use of the FloGard® CIB will not be covered by this warranty. c. Customer Support Information Oldcastle Infrastructure offers full customer support for all products including the FloGard® CIB. Customer Support contact information is as follows: Oldcastle Infrastructure™ 7100 Longe Street Stockton, CA 95304 Phone: (888) 965-3227 Website: www.oldcastleinfrastructure.com Email Contact: ContactInfrastructure@Oldcastle.com 12 8. Field/Lab Testing Information and Analysis a. Available Field/Lab Testing Information – Devices with 5mm Screen The FloGard® CIB includes a screen with 4.9mm apertures through which all treatment flow must pass to travel downstream; therefore, testing is not required to demonstrate trash capture performance because particles 5mm in diameter and larger cannot physically pass through the screen. b. Available Field/Lab Testing Information – Devices without 5mm Screen FloGard® CIB systems without the trash capture (4.9mm aperture) screen do not have testing or field data available and will not be used for trash capture applications. APPENDIX A 14 Technical Memorandum FloGard® CIB Hydraulic Capacity Calculations This technical memorandum documents the hydraulic calculations for the FloGard® CIB. I. Standard Equations Filtered and Bypass Flow Capacity Orifice Equation for Screen Basket; Qf = େ ୱ ඥଶ ୦ ௌி o Qf = Treatment Flow Rate; ft3/sec o C = Discharge (Orifice) Coefficient; 0.85 o As = (Slot Area) * (% Open); ft2 Filtered Flow As = (WL + 2WD + 2LD )(Open Area) Bypass Flow As = h(L + 2W)(Open Area) o g = Gravity; 32.174 ft/sec2 o h = Available (Driving) Head; ft Filtered Flow = 0.5 ft Bypass Flow = 0.25 ft o SF = Safety Factor; 2 Storage Volume for Screen Basket; Vs = WLD o Vs = Storage Volume; ft3 o W = Basket Width; ft o L = Basket Length; ft o D = Basket Depth; ft II. Example Calculations Filtered Flow Calculation; 24” Curb Inlet Ax = WL + 2WD + 2LD o W = ଵ.ଽ ଵଶ = 0.89 ft o L = ଵ଼ ଵଶ = 1.50 ft o D = ଵଶ ଵଶ = 1.00 ft o Ax = (0.89 ft)(1.50 ft) + (2)(0.89 ft)(1.00 ft) + (2)(1.50 ft)(1.00 ft) = 6.115 ft2 l, Oldcastle lnfrast~~S!~!~- 15 As = (Screen Surface Area, Ax) * (% Open) o As = 6.115 ft2 * 50% = 3.06 ft2 Qf = େ ୱ ඥଶ ୦ ௌி o C = 0.85; As = 3.06 ft2; g = 32.174 ft/s2; h = 0.5 ft; SF = 2 o Qf = .଼ହ∗ ଷ. √ଶ∗ଷଶ.ଵସ∗.ହ ଶ o Qf = 7.37 ft3/sec Filtered Flow at 100% capacity is 7.37 cfs. Bypass Flow Calculation; 24” Curb Inlet Ax = H(L + 2W) o H = ଷ ଵଶ = 0.25 ft o W = ଵ.ଽ ଵଶ = 0.89 ft o L = ଵ଼ ଵଶ = 1.50 ft o Ax = (0.25 ft)(1.50 ft + (2)(0.89 ft))= 0.82 ft2 As = (Screen Surface Area, Ax) * (% Open) o As = 0.82 ft2 * 50% = 0.41 ft2 Qb = େ ୱ ඥଶ ୦ ௌி o C = 0.85; As = 4.92 ft2; g = 32.174 ft/s2; h = 0.5 ft; SF = 2 o Qb = .଼ହ∗ .ସଵ √ଶ∗ଷଶ.ଵସ∗.ଶହ ଶ o Qb = 0.70 ft3/sec Bypass Flow is 0.70 cfs. Storage Capacity Calculation; 24” Curb Inlet Storage Volume for Screen Basket; Vs = WLD o W = ଵ.ଽ ଵଶ = 0.89 ft o L = ଵ଼ ଵଶ = 1.50 ft o D = ଵଶ ଵଶ = 1.00 ft o Vs = (0.89 ft)(1.50 ft)(1.00 ft) = 1.34 ft3 Storage Capacity is 1.34 cf. 16 APPENDIX B SECTION B-B TOP VIEW SECTION A-A SIDE VIEW DETAIL A MOUNTING BRACKET & EXPANSION BOLTS SEE NOTE 1 A A CATCH BASIN FLOGARD® CURB INLETFILTER ASSEMBLY RUBBER GASKETS CURB OPENING <5mm FILTER LINER;CA TRASH CAPTURECOMPLIANT W B B FLOGARD® CURB INLETFILTER ASSEMBLY SEE DETAIL A OUTLET FILTER LINER & SUPPORT BASKET CURB OPENING CATCH BASIN FLOGARD® FILTERFRAME FILTER LINER &SUPPORT BASKET MOUNTING BRACKET EXPANSIONBOLT 12.00" Ph: 800.579.8819 | www.oldcastleinfrastructure.com/stormwater THIS DOCUMENT IS THE PROPERTY OF OLDCASTLE INFRASTRUCTURE, INC.IT IS CONFIDENTIAL, SUBMITTED FOR REFERENCE PURPOSES ONLY ANDSHALL NOT BE USED IN ANY WAY INJURIOUS TO THE INTERESTS OF, ORWITHOUT THE WRITTEN PERMISSION OF OLDCASTLE INFRASTRUCTURE, INC.COPYRIGHT © 2021 OLDCASTLE INFRASTRUCTURE, INC. ALL RIGHTS RESERVED. DRAWING NUMBER REVISION SHEET REV DATE - - FloGard® Curb Inlet Basket CUSTOMER JOB NAME - - - CIB-1 1 OF 1InletFiltration NOTES: 1. FILTER SUPPORT FRAME SHALL BECONSTRUCTED FROM STAINLESS STEEL TYPE304. 2. STORAGE CAPACITY REFLECTS 100% OFMAXIMUM SOLIDS COLLECTION PRIOR TOIMPEDING FILTERING BYPASS. 3. FLOGARD CURB INLET BASKET IS AVAILABLE INSIZES TO ACCOMMODATE STANDARD INDUSTRYCURB INLETS. NON-STANDARD/CUSTOM SIZESCAN BE ACCOMMODATED WITH MINIMALMODIFICATION BY CONTACTING YOUR LOCALOLDCASTLE INFRASTRUCTURE REPRESENTATIVE. 4 <I'~. 4 <I . .,, ·r~~-•-:4"'.:,.._·;_· ·_· --'--'....:....:;c:::::::!:::::::;i::::--t--------r • . . . .• ~ <I. APPENDIX C Oldcastle Infrastructure 10441 Vine Street Lakeside, CA 92040 June 9, 2021 Dear Ms. Sanfilippo, Thank you for the submission of the Oldcastle FloGard Curb Inlet Basket full trash capture device for review by the Mosquito and Vector Control Association of California pursuant to the SWRCB Trash Treatment Control Device Application Requirements. The Association has reviewed the conceptual drawings for the FloGard Curb Inlet Basket 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 FloGard Curb Inlet Basket 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 ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• One Capitol Mall, Suite 800 • Sacramento, CA 95814 • p: (916) 440-0826 • f: (916) 444-7462 • e: mvcac@mvcac.org ,,;:f~/ ~ ?-__ ,.,. •• / ( /-~ ·,. STORMWATER Removes Pollutants from Runoff Prior to Entering Waterways Two-part stainless-steel insert to filter solids and oils/grease. Easy to install, inspect and maintain, even on small and confined sites. Efficient System Catches pollutants where they are easiest to catch, at the inlet. Variable Design Able to be retrofitted or used in new projects. Treatment Train Can be incorporated as part of a “Treatment Train”. No Standing Water Helps to minimize bacteria and odor problems. Focused Treatment Removes petroleum hydrocarbons, trash and Total Suspended Solids (TSS). Maximum Flexibility Available in a variety of standard sizes to fit round and square inlets. Economical Earn a higher return on system investment. By the Numbers*: Filter will remove up to 80% of Total Suspended Solids (TSS), at least 70% of oils and grease, and up to 40% of Total Phosphorus (TP) associated with organic debris as well as Polycyclic Aromatic Hydrocarbons (PAH) from oil leaks and spills. *Approximate for urban street application. CATCH BASIN FILTER TEST RESULTS SUMMARY Testing Agency % TSS Removal % Oil & Grease Removal % PAH Removal UCLA 80 70 to 80 U of Auckland Tonking & Taylor, Ltd(for City of Auckland) 78 to 95 U of Hawaii (for City of Honolulu) 80 20 to 40 INLET FILTRATION PUT A STOP to TSS 0 Oklcastle lnfrast~~S!!;!~~· 0 PUT A STOPto TSS Multi-Purpose Catch Basin Insert Retains Sediment, Debris, Trash and Oils/Grease FloGard® catch basin insert filters are recommended for areas subject to silt and debris as well as low-to-moderate levels of petroleum hydrocarbons (oils and grease). Examples of such areas include vehicle parking lots, aircraft ramps, truck and bus storage yards, business parks, residential and public streets. Flat-Grated Inlet Circular Frame InletCaptured debris from FloGard catch basin insert filter in Dana Point, California. Combination Inlet CATCH BASIN FILTER COMPETITIVE FEATURE COMPARISON Evaluation of Catch Basin Filters (Based on flow-comparable units) (Scale 1-10) Oldcastle Other Insert Filter Types** Flow Rate 10 7 Removal Efficiency*80%45% Capacity - Sludge & Oil 7 7 Service Life 10 3 Installation - Ease of Handling / Installation 8 6 Ease of Inspections & Maintenance 7 7 Value 10 2 *Approximate, based on field sediment removal testing in urban street application **Average Long-Term Value Comparison (Based on flow-comparable units) (Scale 1-10) Oldcastle Other Insert Filter Types** Unit Value - Initial ($/cfs treated)10 4 Installation Value ($/cfs treated)10 7 Absorbent Replacement (annual avg ($/cfs treated)10 2 Materials Replacement Value (annual avg ($/cfs treated)10 10 Maintenance Value (annual avg ($/cfs treated)10 7 Total First Year ROI ($/cfs treated)10 5 Total Annual Avg Value ($/cfs treated, avg over 20 yrs)*10 5 (800) 579-8819 oldcastleinfrastructure.com (I Oldcastle lnfrast~~l\;!~f 0 STORMWATER INLET FILTRATION FLOGARD®Catch Basin Insert Filter Catch basin insert designed to capture sediment, gross solids, trash and petroleum hydrocarbons from low (“first flush”) flows, even during the most extreme weather conditions Flat-Grated Inlet Circular Frame Inlet Combination Inlet Example Types, Sizes and Capacities: Additional sizes, including regional and custom options are available. FloGard Combination Inlet STANDARD DEPTH INLET ID Inside Dimension (inch x inch) GRADE OD Outside Dimension (inch x inch) TOTAL BYPASS CAPACITY (cu. ft. / sec.) SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) SHALLOW DEPTH SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) FGP-1633FGO 16 X 33 18 X 36 7.0 2.5 1.7 FGP-1633FGO8 1.4 1.1 FGP-1836FGO 18 X 36 18 X 40 6.9 2.3 1.6 FGP-1836FGO8 1.3 .9 FGP-2234FGO 22 X 34 24 X 36 8.1 3.6 2.1 FGP-2234FGO8 2.1 1.4 FGP-2436FGO 24 X 36 24 X 40 8.0 3.4 2.0 FGP-2436FGO8 1.95 1.15 STANDARD DEPTH INLET ID Inside Dimension (inch x inch) GRADE OD Outside Dimension (inch x inch) TOTAL BYPASS CAPACITY (cu. ft. / sec.) SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) SHALLOW DEPTH SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) FGP-12F 12 X 12 12 X 14 2.8 0.3 0.4 FGP-12F8 .15 .25 FGP-16F 16 X 16 16 X 19 4.7 0.8 0.7 FGP-16F8 .45 .4FGP-18F 18 X 18 18 X 20 4.7 0.8 0.7 FGP-18F8 .45 .4 FGP-1836F 18 X 36 18 X 40 6.9 2.3 1.6 FGP-1836F8 1.3 .9 FGP-21F 22 X 22 22 X 24 6.1 2.2 1.5 FGP-21F8 1.25 .85 FGP-24F 24 X 24 24 X 27 6.1 2.2 1.5 FGP-24F8 1.25 .85 FGP-2436F 24 X 36 24 X 40 8.0 3.4 2.0 FGP-2436F8 1.95 1.15 FGP-2448F 24 X 48 24 X 48 9.3 4.4 2.4 FGP-2448F8 2.5 1.35 FGP-32F-TN 28 X 28 32 X 32 6.3 2.2 1.5 FGP-32F8-TN 1.25 .85 FGP-30F 30 X 30 30 X 34 8.1 3.6 2.0 FGP-30F8 2.05 1.15 FGP-36F 36 X 36 36 X 40 9.1 4.6 2.4 FGP-36F8 2.65 1.35 FGP-3648F 36 X 48 40 X 48 11.5 6.8 3.2 FGP-3648F8 3.9 1.85 FGP-48F 48 X 48 48 X 54 13.2 9.5 3.9 FGP-48F8 5.45 2.25 FGP-1633F 16 X 34 18 X 36 6.9 2.3 1.6 FGP-1633F8 1.3 .9 FGP-2234F 22 X 34 24 X 36 8.0 3.4 2.0 FGP-2234F8 1.95 1.15 FloGard Flat Grated Inlet SPECIFIER CHARTSTANDARD & SHALLOW DEPTH (Data in these columns is the same for both STANDARD & SHALLOW versions) STANDARD DEPTH -20 Inches- SHALLOW DEPTH -12 Inches-MODEL NO.MODEL NO. STANDARD DEPTH -20 Inches- SHALLOW DEPTH -12 Inches- SPECIFIER CHARTSTANDARD & SHALLOW DEPTH (Data in these columns is the same for both STANDARD & SHALLOW versions)MODEL NO.MODEL NO. MODEL NUMBER INLET ID (inches) GRADE OD (inches) SOLIDS STORAGE CAPACITY (CU FT) FILTERED FLOW (CSF) TOTAL BYPASS CAPACITY (CFS) FGP-RF15F 15 18 0.3 0.4 2.8 FGP-RF18F 18 20 0.8 0.7 4.7 FGP-RF20F 20 23 0.8 0.7 4.7 FGP-RF21F 21 23.5 0.8 0.7 4.7 FGP-RF22F 22 24 0.8 0.7 4.7 FGP-RF24F 24 26 0.8 0.7 4.7 FGP-RF30F 30 32 2.2 1.5 6.1 FGP-RF36F 36 39 3.6 2.0 8.1 FloGard Circular Grated Inlet SPECIFIER CHART 0 Oklcastle lnfrast~~S!!;!~~· 0 U.S. PATENT #6,551,023 & 6,872,029 FloGard® FILTER -INSTALLED INTO CATCH BASIN- GRATE ------"'<:, "ULllMATE" BYPASS FEATURES GASKET STAINLl:SS STEEL SUPPORT BASKET - Fossil Rock7"' ABSORBENT POUCHES LINER ----- SUP-PORT BASKET --- CATQ-l BASIN (FLAT GRATE STYLE) DETAIL A EXPLODED VIEW NOTTS: l f ilter insert shall have a high flow bypass feature. 2 Filter support frame shall l::e constructed from stainless steel Type 304. 3. 4. Filter medium shall l::e Fossil Rode installed and maintained ii accordance with manufacturer specifications. Storage capacity reflects SY/4 of maximum solids collection prior to impeding filtering bypass. December 2018 v.1 Rubberizer® transforms spilled hydrocarbons into a rubber-like solid on contact, and does not re-release when it is retrieved. The solidification process is non-chemical in nature allowing the US EPA to classify Rubberizer as a sorbent. This product, which comes in booms, pillows or granular form, can be used to clean oil from bilges, deck spills, around hydraulic storage tanks, under hydraulic machinery, in all engineering spaces and most importantly, in any hydrocarbon fuel spill where leaking oil comes in contact with water. Rubberizer has been used in clean-up operations around the world and is patented in 22 countries. The key advantages of the Rubberizer product line when compared to many of the characteristics of the more conventional products include: •Works on land or water borne spills•Remains buoyant•Solidifies and is landfill approved •Resistant to leaching •Does not release solidified oils under pressure •Incinerates with less that .1% residual ash•Reduces overall clean-up time•Reduces overall costs Rubberizer products sorb and transform into a rubber-like material similar to many petroleum based products like: •Gasoline •Jet Fuel •Diesel Fuels •Transformer Oils•Hydraulic Oils•Lube Oils •Aromatic Solvents •Chlorinated Solvents •Light Crudes 1 How Rubberizer® (Fossil Rock) Products Work* Rubberizer particulate is a mixture of hydrocarbon polymers plus additives resulting in a grainy material used primarily for cleanup operations where sweeping and shoveling are involved. It can also be used for clarification of various emulsions, or solidification and removal of various petroleum based slicks from the surface of water which is in a controlled state. 0 Oldcastle lnfrast~~S~!'.( December 2018 v.12 This product, (and the booms and pillows) in which it is the filler, exhibit characteristics that include: •Lightweight enabling rapid deployment and retrieval (apparent specific gravity approximately = 0.4) •Rapid sorption and solidification (measured in minutes), hydrophobic (no affinity for water)•Permanently buoyant (both before and after sorption)•Will not release solidified liquids under pressure •Resistant to leaching upon aqueous contact •High sorbed liquid to sorbent ratios (nominally 5 parts liquid to 1 part sorbent)•Minimal incineration residue (less than .1%)•Little volume increase of sorbed liquids (15% in laboratory tests, nominally 25% in field applications) One pound of this product will solidify into a rubber-like material up to 2/3 gallon of jet fuel, diesel, gasoline,transformer oil, hydraulic oils, light crude and many other liquids. *Rubberizer® = Fossil Rock 0 Oldcastle lnfrast~~S~!'.( TRENCH DRAIN FILTER STORMWATER INLET FILTRATION FLOGARD® Trench Drain Filter The FloGard Trench Drain Filter is a modular filter designed to collect sediment, debris and petroleum hydrocarbons from stormwater runoff into trench drain systems. It includes a UV- resistant woven geo-textile wrapped around a perforated core encapsulating a sorbent material which is easily replaced, providing for flexibility, ease of maintenance and economy. For narrow and constricted areas often found in trench drains, the FloGard Trench Drain Filter provides an effective solution to comply with stormwater runoff issues. The units perform as an effective filtering device at low (“first flush”) flows, and because of the built-in high-flow bypass, they will not impede the drainage system’s maximum design flow. FloGard Trench Drain Filters are available in sizes to fit most common trench drains. Contact Oldcastle Infrastructure for additional sizes and project specific details. MODEL FILTER TYPE TRENCH WIDTH "ID" (CLEAR OPENING) (in) MINIMUM TRENCH DEPTH (FROM BOTTOM OF GRATE) (in) SOLIDS STORAGE CAPACITY (cu ft)** FILTERED FLOW (cfs)** TOTAL BYPASS CAPACITY (cfs) FG-TDOF3 PIPE*3.0 6.5 0.1 0.5 0.1 FG-TDOF4 PIPE*4.0 6.5 0.2 0.5 0.1 FG-TDOF6 PIPE 6.0 6.5 0.4 0.5 0.2 FG-TDOF8 PIPE 8.0 6.5 0.7 0.5 0.3 FG-TDOF10 PIPE 10.0 6.5 0.9 0.5 0.5 FG-TDOF12 PIPE 12.0 6.5 0.9 1.0 0.6 FG-TDOF18 PIPE 18.0 6.5 1.3 1.5 1.1 FG-TDOF24 PIPE 24.0 6.5 1.8 2.0 1.5 FG-TDOA6 PANEL 6.0 4.5 0.4 0.2 0.2 FG-TDOA8 PANEL 8.0 4.5 0.7 0.2 0.3 FG-TDOA10 PANEL 10.0 4.5 0.8 0.3 0.5 FG-TDOA12 PANEL 12.0 4.5 1.0 0.4 0.6 FG-TDOA18 PANEL 18.0 4.5 1.4 0.8 1.1 SPECIFICATIONS *ALTERNATIVE ADAPTER CONFIGURATION. **CAPACITY PER 5-FT SEGMENT USED. A Modular Filter Designed for Narrow and Constricted Areas 0 Oklcastle lnfrast~~S!!;!~~· 0 ATTACHMENT 2 BACKUP FOR PDP HYDROMODIFICATION CONTROL MEASURES Indicate which Items are Included behind this cover sheet: Attachment Sequence Contents Checklist Attachment 2a Hydromodification Management Exhibit (Required) Included See Hydromodification Management Exhibit Checklist on the back of this Attachment cover sheet. Attachment 2b Management of Critical Coarse Sediment Yield Areas (WMAA Exhibit is required, additional analyses are optional) See Section 6.2 of the BMP Design Manual. Exhibit showing project drainage boundaries marked on WMAA Critical Coarse Sediment Yield Area Map (Required) Optional analyses for Critical Coarse Sediment Yield Area Determination Appendix H.6.1 Verification of Geomorphic Landscape Units Onsite Appendix H.7 Downstream Systems Sensitivity to Coarse Sediment Attachment 2c Geomorphic Assessment of Receiving Channels (Optional) See Section 6.3.4 of the BMP Design Manual. Not performed Included Attachment 2d Flow Control Facility Design and Structural BMP Drawdown Calculations (Required) See Chapter 6 and Appendix G of the BMP Design Manual Included x x x x Use this checklist to ensure the required information has been included on the Hydromodification Management Exhibit: The Hydromodification Management Exhibit must identify: Underlying hydrologic soil group Approximate depth to groundwater Existing natural hydrologic features (watercourses, seeps, springs, wetlands) Critical coarse sediment yield areas to be protected (if present) Existing topography Existing and proposed site drainage network and connections to drainage offsite Proposed grading Proposed impervious features Proposed design features and surface treatments used to minimize imperviousness Point(s) of Compliance (POC) for Hydromodification Management Existing and proposed drainage boundary and drainage area to each POC (when necessary, create separate exhibits for pre-development and post-project conditions) Structural BMPs for hydromodification management (identify location, type of BMP, and size/detail) X X X X X X X X X X not present not present ATTACHMENT 1FATTACHMENT 2A RW RW RW RW RW RW RW RW RW RW RW RW W W W W W W W W W W W W W RW RW RW RW RW RW RW RW RW W W W W W W W W W W W W W W W W W W W W W W W W W W W 6 7 . 0 0 ' N 0 1 ° 5 6 ' 2 6 " W 33" R C P 33" R C P SSSS S S S S S S S S S SS S E E E E E E E E E E E E E E E E EEEEEEEEEEEE Conc. SS SS SS SS SS SS SS SS SS SS SSSSSS W SSSSSS 19 5 195 20 0 20 0 205 205 170 175 180 185 190 195 175 180 185 190 195 200 165 170 175 180 185 190 195 2 0 0 17 017 5180 18 5 190 195 165 170 175 180 185 190 195 16 5 17 0 175 180 185 19 0 195 200 195 195 200 205 30 " R C P W W W W W W RW 18 " R C P 19 8 19 919 9 198 197 196 20 1 200 20 0 199 200 20 1 201 2 0 2 20 3 2 0 4 204 203 200 VAN ACCESSIBLE EV VAN ACCESSIBLE NOPARKING NO PARKING EV PARKINGONLY EV PARKINGONLY EV PAR K I N G ONL Y VAC U U M VAN ACC E S S I B L E NO PA R K I N G DMA EXHIBIT Project No. Drawing No. Scale As Noted 10769 Woodside Ave, Suite 204Santee, CA 92071 (619) 971-7514 Palomar AirportRoad Car Wash 1991 Palomar AirportRoad, Carlsbad, CA 92011 472 bashar@najars.com OMA AREAS TOTAL NEW/REPLACE UNDISTURBED PERVIOUS OMA AREA (SF) IMP. AREA (SF) IMP(S~~EA AREA (SF) 1 39,164 2 183,394 3 12,909 4 22,530 5 4,820 6 15,833 7 9,973 8 1,862 9 86 10 6,626 NOTES: BERM SOUTH OF BMP-A 198.08 TOP OF BERM 197.58 FG 0 0 5,654 0 0 8,683 0 0 86 0 650 38,514 717 182,677 3,844 3,411 19,274 3,256 4,820 0 4,639 2,511 1,054 8,919 1,862 0 0 0 5,590 1,036 OMA TYPE SELF-MITIGATING SELF-MITIGATING BIOFIL TRA TION BMP-A BIOFIL TRA TION BMP-B SELF-MITIGATING SELF-MITIGATING DE MINIMIS DCV REQUIRED (CF) 0 0 512 0 0 701 0 0 0 0 BMP-A WEST BASIN GAl'1UIE1 \ ..... 200' SDG&E I 20' SDG&E TREE TRANSMISSION EASEMENT i TRIMMING EASEMENT 202.05TW 12" THICK AGGREGATE STORAGE; EX. 200.85FG FILTER COURSE LAYER (6" THICK -WASHED PEA GRAVEL) CLASS 2 PERMEABLE PER CAL TRANS 68-1.025 *3" WELL-AGED SHREDDED HARDWOOD MULCH THAT HAS BEEN STOCKPILED OR STORED FOR ATLEAST 12 MONTHS IMPERMEABLE LINER. 30MILS MIN .. SOIL MIX CONSISTS OF: 85-55% WASHED SAND 8-12% FINES (SILT & CLAY) 3-5% ORGANIC MATTER OUTFALL 12" PVC STORM DRAIN PIPE CONNECT TO POINT OF DISCHARGE AT EXISTING 33" STORM PIPE 196.631E 6" PERFORATED UNDERDRAIN PIPE WITH AN END CAP AND A 0.58" DIAMETER ORIFICE BIOFIL TRA TION BASIN SCALE: N.T.S. I LEGEND: PROPERTY LINE DIRECTION OF FLOW DMA LIMIT NEW/REPLACE IMPER'I/OUS AREA UNDISTURBED IMPER'I/OUS AREA PER'I/OUS AREA ~ • :_ .. ~ ---, ·-,-· < ' • • --~ , '~ /lj;, ~ ~ / :; 1/, ; ; ; ; ; ; / ; / ; ; / ; ; / ; 30" DRAIN BASIN FOR EMERGENCY OVERFLOW • FITTED WITH FLOGARD CATCH BASIN INSERT FILTER PER DETAIL 3, SHEET 7 200.63TG 202.05TW WALL OPENING / 1 201.88 TC SEE DETAIL THIS rr.J-, SHEET I L 18" I I 201.38 FL I I I 7.4" FREEBOARD 32" OPENING ---------- -------c::,--------c::,--------c::,--------c::,- TC -- 6" FL 3' WIDE RIBBON GUTTER (IF APPLICABLE) WALL OPENING DETAIL ~, "~~ 0 40' 80' SCALE: 1 "=40' NAJARS ENGINEERING, INC. PROJECT LOCATION Attachment 2b - CCSYA Exhibit ATTACHMENT 1EATTACHMENT 2D Project Name:Palomar Airport Rd Car Wash Project Applicant:Palomar Airport Partners LLC Jurisdiction:City of Carlsbad Parcel (APN):213-092-1700 Hydrologic Unit:Buena HSA Rain Gauge:Oceanside Total Project Area (sf):20,407 Channel Susceptibility:High BMP Sizing Spreadsheet V3.1 Project Name:Hydrologic Unit: Project Applicant:Rain Gauge: Jurisdiction:Total Project Area: Parcel (APN):Low Flow Threshold: BMP Name:BMP Type: BMP Native Soil Type:BMP Infiltration Rate (in/hr): HMP Sizing Factors Minimum BMP Size DMA Name Area (sf) Pre Project Soil Type Pre-Project Slope Post Project Surface Type Area Weighted Runoff Factor (Table G.2-1)1 Surface Area Surface Area (SF) DMA 3 9,498 D Flat Concrete 1.0 0.07 665 DMA 3 3,411 D Flat Landscape 0.1 0.07 24 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 BMP Tributary Area 12,909 Minimum BMP Size 689 Proposed BMP Size*758 * Assumes standard configuration 12.00 in 18.00 in 6.00 in 12 in 3.0 in 3.5 Notes: 1. Runoff factors which are used for hydromodification management flow control (Table G.2-1) are different from the runoff factors used for pollutant control BMP sizing (Table B.1-1). Table references are taken from the San Diego Region Model BMP Design Manual, May 2018. This BMP Sizing Spreadsheet has been updated in conformance with the San Diego Region Model BMP Design Manual, May 2018. For questions or concerns please contact the jurisdiction in which your project is located. Describe the BMP's in sufficient detail in your PDP SWQMP to demonstrate the area, volume, and other criteria can be met within the constraints of the site. BMP's must be adapted and applied to the conditions specific to the development project such as unstable slopes or the lack of available head. Designated Staff have final review and approval authority over the project design. Underdrain Offset Bioretention Soil Media Depth Filter Coarse Gravel Storage Layer Depth Surface Ponding Depth Areas Draining to BMP City of Carlsbad 213-092-1700 D BMP Sizing Spreadsheet V3.1 0.025 Biofiltration 0.1Q2 20,407 Oceanside Buena HSA BMP A Palomar Airport Rd Car Wash Palomar Airport Partners LLC Project Name:Hydrologic Unit: Project Applicant:Rain Gauge: Jurisdiction:Total Project Area: Parcel (APN):Low Flow Threshold: BMP Name BMP Type: Rain Gauge Unit Runoff Ratio DMA Area (ac) Orifice Flow - %Q2 Orifice Area Soil Type Slope (cfs/ac)(cfs) (in2) DMA 3 Oceanside D Flat 0.571 0.218 0.012 0.18 DMA 3 Oceanside D Flat 0.571 0.078 0.004 0.06 3.75 0.017 0.24 0.55 Max Orifice Head Max Tot. Allowable Orifice Flow Max Tot. Allowable Orifice Area Max Orifice Diameter (feet)(cfs)(in2)(in) 0.013 0.014 0.20 0.500 Average outflow during surface drawdown Max Orifice Outflow Actual Orifice Area Selected Orifice Diameter (cfs)(cfs)(in2)(in) Drawdown (Hrs)16.4 BMP A Pre-developed Condition No Orifice Required for Infiltration Facilities DMA Name Buena HSA BMP Sizing Spreadsheet V3.1 City of Carlsbad 213-092-1700 Palomar Airport Rd Car Wash Palomar Airport Partners LLC 0.1Q2 20,407 Oceanside Biofiltration Drawdown time exceeds 96 Hrs. Project must implement a vector control program. Project Name:Palomar Airport Rd Car Wash Project Applicant:Palomar Airport Partners LLC Jurisdiction:City of Carlsbad Parcel (APN):213-092-1700 Hydrologic Unit:Buena HSA Rain Gauge:Oceanside Total Project Area (sf):20,407 Channel Susceptibility:High BMP Sizing Spreadsheet V3.1 Project Name:Hydrologic Unit: Project Applicant:Rain Gauge: Jurisdiction:Total Project Area: Parcel (APN):Low Flow Threshold: BMP Name:BMP Type: BMP Native Soil Type:BMP Infiltration Rate (in/hr): HMP Sizing Factors Minimum BMP Size DMA Name Area (sf) Pre Project Soil Type Pre-Project Slope Post Project Surface Type Area Weighted Runoff Factor (Table G.2-1)1 Surface Area Surface Area (SF) DMA 6 13,322 D Flat Concrete 1.0 0.07 933 DMA 6 2,511 D Flat Landscape 0.1 0.07 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 BMP Tributary Area 15,833 Minimum BMP Size 950 Proposed BMP Size*956 * Assumes standard configuration 12.00 in 18.00 in 6.00 in 12 in 3.0 in 3.5 Notes: 1. Runoff factors which are used for hydromodification management flow control (Table G.2-1) are different from the runoff factors used for pollutant control BMP sizing (Table B.1-1). Table references are taken from the San Diego Region Model BMP Design Manual, May 2018. BMP Sizing Spreadsheet V3.1 0.025 Biofiltration 0.1Q2 20,407 Oceanside Buena HSA BMP B Palomar Airport Rd Car Wash Palomar Airport Partners LLC Surface Ponding Depth Areas Draining to BMP City of Carlsbad 213-092-1700 D This BMP Sizing Spreadsheet has been updated in conformance with the San Diego Region Model BMP Design Manual, May 2018. For questions or concerns please contact the jurisdiction in which your project is located. Describe the BMP's in sufficient detail in your PDP SWQMP to demonstrate the area, volume, and other criteria can be met within the constraints of the site. BMP's must be adapted and applied to the conditions specific to the development project such as unstable slopes or the lack of available head. Designated Staff have final review and approval authority over the project design. Underdrain Offset Bioretention Soil Media Depth Filter Coarse Gravel Storage Layer Depth Project Name:Hydrologic Unit: Project Applicant:Rain Gauge: Jurisdiction:Total Project Area: Parcel (APN):Low Flow Threshold: BMP Name BMP Type: Rain Gauge Unit Runoff Ratio DMA Area (ac) Orifice Flow - %Q2 Orifice Area Soil Type Slope (cfs/ac)(cfs) (in2) DMA 6 Oceanside D Flat 0.571 0.306 0.017 0.25 DMA 6 Oceanside D Flat 0.571 0.058 0.003 0.05 3.75 0.021 0.30 0.61 Max Orifice Head Max Tot. Allowable Orifice Flow Max Tot. Allowable Orifice Area Max Orifice Diameter (feet)(cfs)(in2)(in) 0.017 0.019 0.27 0.583 Average outflow during surface drawdown Max Orifice Outflow Actual Orifice Area Selected Orifice Diameter (cfs)(cfs)(in2)(in) Drawdown (Hrs)15.2 Oceanside Biofiltration Drawdown time exceeds 96 Hrs. Project must implement a vector control program. Buena HSA BMP Sizing Spreadsheet V3.1 City of Carlsbad 213-092-1700 Palomar Airport Rd Car Wash Palomar Airport Partners LLC 0.1Q2 20,407 BMP B Pre-developed Condition No Orifice Required for Infiltration Facilities DMA Name ATTACHMENT 3 Structural BMP Maintenance Information Use this checklist to ensure the required information has been included in the Structural BMP Maintenance Information Attachment: Preliminary Design/Planning/CEQA level submittal: Attachment 3 must identify: Typical maintenance indicators and actions for proposed structural BMP(s) based on Section 7.7 of the BMP Design Manual Final Design level submittal: Attachment 3 must identify: Specific maintenance indicators and actions for proposed structural BMP(s). This shall be based on Section 7.7 of the BMP Design Manual and enhanced to reflect actual proposed components of the structural BMP(s) How to access the structural BMP(s) to inspect and perform maintenance Features that are provided to facilitate inspection (e.g., observation ports, cleanouts, silt posts, or other features that allow the inspector to view necessary components of the structural BMP and compare to maintenance thresholds) Manufacturer and part number for proprietary parts of structural BMP(s) when applicable Maintenance thresholds for BMPs subject to siltation or heavy trash(e.g., silt level posts or other markings shall be included in all BMP components that will trap and store sediment, trash, and/or debris, so that the inspector may determine how full the BMP is, and the maintenance personnel may determine where the bottom of the BMP is . If required, posts or other markings shall be indicated and described on structural BMP plans.) Recommended equipment to perform maintenance When applicable, necessary special training or certification requirements for inspection and maintenance personnel such as confined space entry or hazardous waste management X X X X X X X OPERATION & MAINTENANCE MANUAL FOR PALOMAR AIRPORT RD CAR WASH 1991 Palomar Airport Rd CARLSBAD, CALIFORNIA 92009 APN# 213-092-17 July 13, 2023 Prepared By: NAJARS Engineering 10769 Woodside Avenue, Suite 204 Santee, CA 92071 (619) 971-7514 2 Table of Contents 1.0 GENERAL PROJECT INFORMATION ............................................................................. 3 1.1 Project Site Information ...................................................................................................................... 3 1.2 Project Description .............................................................................................................................. 3 2.0 OPERATION & MAINTENANCE (O&M) PLAN ............................................................... 3 3.0 OPERATION & MAINTENANCE OF BMPS ..................................................................... 3 3.1 Training................................................................................................................................................. 4 3.2 Structural BMP: Biofiltration ............................................................................................................... 5 3.3 Trash Capture Devices ......................................................................................................................... 6 3.4 Funding ................................................................................................................................................. 6 3.5 Vector Control Owner Responsibilities ............................................................................................... 6 LIST OF ATTACHMENTS Attachment A1: Vicinity Map Attachment B1: BMP Maintenance Fact Sheet for: - Structural BMP BF-1 Biofiltration - Trash Capture BMP Attachment C1: Cost Estimate for Maintenance Attachment D1: BMP Training Log Attachment E1: Inspection and Maintenance Log 3 1.0 GENERAL PROJECT INFORMATION 1.1 Project Site Information Project Name: Palomar Airport Rd Car Wash Project Address: 1991 Palomar Airport Rd, Carlsbad CA 92009 1.2 Project Description The Palomar Airport Rd Car Wash project proposes the construction of a redevelopment car wash tunnel with vacuum stalls, landscape and hardscape. The proposed project will also implement new stormwater treatment systems consisting of the following: - Biofiltration basins and associated catch basins (BMP-A and BMP-B) - Trash Captures BMPs 2.0 OPERATION & MAINTENANCE (O&M) PLAN This document has been prepared in compliance with the San Diego Regional Water Quality Control Board requirements and in accordance with requirements set by the City of Carlsbad. A Storm Water Quality Management Plan (SWQMP) has been prepared for the Palomar Airport Rd Car Wash project. It identifies the specific Best Management Practices (BMPs) required for the project. Refer to this project’s SWQMP for additional information on BMPs. Proper maintenance of the project BMP's is required for their intended and effective function. This O&M Plan provides operation and maintenance procedures for the BMPs designated in the SWQMP. It includes procedures to be followed for inspection and maintenance of the BMPs, instructions for documenting the work performed, record keeping, and outlining the requirement and procedures for training of personnel involved in the process. 3.0 OPERATION & MAINTENANCE OF BMPS It shall be the responsibility of the Current Property Owner to maintain and to train all employees for the maintenance and operation of all BMPs, to achieve the maximum pollutant reduction they are designed for, as addressed in the approved Project’s SWQMP. The following schedule of O&M’s must be followed to satisfy the Pollutants of Concern as addressed in the approved Project’s SWQMP. This schedule shall include periodic inspections of all Source Control and Treatment Control BMP’s. All maintenance records for training, inspection and maintenance shall be retained and provided to the city upon request. All BMPs shall be inspected prior to August 31st each year and certified to the City Engineering Department as to their readiness to receive runoff from the annual rainfall season (See Attachment B1). Access for maintenance of the structural BMP-A shall be through the pumps off on the west corner of the property and for structural BMP-B shall be through the back of the new car wash tunnel. Both are accessed through the driveways off Camino Vida Roble. 4 The owner will also, provide the City of Carlsbad as part of the maintenance and operation agreement an executed access easement that shall be binding on the land throughout the life of the project. Owner/Responsible Party for O&M Maintenance and For Training: PALOMAR AIRPORT PARTNERSM LLC 3278 VISTA MATAMO EL CAJON, CA 92019 619-454-4488 SALEMINVESTMENTS@YAHOO.COM The Designated Responsible Party will be responsible for ensuring that individuals involved in O&M activities, including but not limited to contractors and new owners, will be trained according to the training program herein, Additionally, upon any future sale of the property, the Owner will be responsible for ensuring that the new Designated Responsible Party is familiar with the contents of the plan and the requirements for the routine inspection, routine and non-routine maintenance and record keeping tasks as described herein. All parties involved in the O&M activities will be required to read this plan. 3.1 Training Personnel training is an important component of the Implementation of this O&M Plan. The employee training program may consist of a meeting with any new owners, Designated Responsible Party or contractor/employees Involved in the O&M activities to review the contents of this plan and to physically tour the facility to observe the BMP and describe O&M requirements for each BMP. The Designated Responsible Party will implement the training program. All new contractors involved in landscape and/or facility maintenance at the site shall receive training within 30-days of hire and shall receive updated annual training. Maintenance contractor shall verify staff training annually. The Designated Responsible Party shall be responsible for documenting all training activities and for maintaining records related to training. Forms for documentation of training are included in Attachment D1 of this plan. Training records shall be retained and provided to the city upon request. 5 3.2 Structural BMP: Biofiltration Complete all inspection and maintenance per the “BMP Maintenance Fact Sheet for Structural BMP BF-1 Biofiltration” in Attachment B1. A Summary of standard inspection and maintenance is provided within the fact sheet and shall be utilized as a reference for any required maintenance actions and required frequencies. All replaced and added soil media must meet the minimum specifications outlined below. The responsible party must provide documentation verifying that the BMPs are maintained and functioning properly. Maintenance securities are required for The Life of the Project, and maintenance responsibilities remain in perpetuity. Dui1f11 Cdtui• 131 A minirnum of 3 inches of wdl-aged, shredded h.:mlwood mulch that has been stockpiled or swred for at least 12 months is pr()vided. Medi•uyer lill lill 181 Mc:dia maiorains a minimum fi.ltration rate of S io/hr over lifetime of facility, An initial lihmLioo rate of 8 co 12 in/hr is re.commended to ,allow for dogging over time; the initi:iJ filtnit.ion rate should not e_xcc:;:c:d 12 inc:hc:s per hour. Media is a minimum 18 inches deep, meeting either of these two media specifications: Section F.3 Biorecencion Soil Media (llSM) or specific jndsdictiooa1 guida.,1ce. 1\ltcroativd}', for proprfotarr designs and cusrom media mi~es not mecting the media specifications. the media meets the pollutant treatment performance criteria in Section f. l. Media surf.ice area is 31,1/,} of contributing area times adju.sted runoff foctor: or: grca(er. BF-I Biofiltration ID=t/R•dODllk Mukh will suppress weeds and maintain moisture for pla.1u growth. t\ging mulch kiJJs pathogens ~tnd weed see<ls and :i.llows the beneficial microbes to mulc.ip1y. A filrr!ltion rate Qf at least S inche.s per ho\1r allows soil w drain between cvc-nts. n,c initial race should be higher chru1 Jong tenn rargel rate to -acco\ull for doggi1t,g over time. However an excessively high initial rate can h:lvc a nega1frc impact on cyc:1tmcot performance, therefore an upper limic is needed. A deep media layer provides addjcional lih:ra.tion and supports plants with deeper roots. S,::u)dard specifications sha.lJ be foUowed. For non-scaodar,d or propricm-r designs, coinplia,1ce with F. l ensnres that adequate treatment perfo1:m:mce will be provided. G rcater surface :irea to tributarr area r:ttfos: a) maximizes volume rctcntfon as rccit1ircd by chc MS4 Pennie and b) decre-:i.se loading rates per square foot and therefore increase lo1tgevitt Adjusted runoff' factor is co account for site dcsjgn 13.i\,lP:s impJcmemcd upscre~m of dte B~fP (such -as min barrels, iinpervious area dispersion, etc.). Refer to Appendix B. I guidan<:e. 6 3.3 Trash Capture Devices Trash capture devices, FloGard + Plus Catch Basin Insert Filter and FloGard + Plus Trench Drain Filter , is proposed to existing inlet, two proposed catch basins and a proposed trench grate, respectively. FloGard + Plus Catch Basin Insert Filter device is listed in the California Water Board’s certified list of Trash Capture Devices and BMPs. BMP Design Manual for the City of Carlsbad, Table 7.6 Maintenance Indicators and Actions for Trash Captures BMPs, lists typical actions for maintenance for reference. The manufacturer’s guide for maintenance indicators and actions are attached on Attachment B1. 3.4 Funding The developer’ must provide the City with security to substantiate the maintenance agreement; security will remain in place in perpetuity from the date of approval of the structural BMP Verification Acceptance Package. The amount of the security would equal the estimated cost of 1 year of maintenance activities. The security may be a Cash Deposit, Letter of Credit, or other form acceptable to the City of Carlsbad. If at any time, owners fail to maintain BMPs and the City must perform any of the maintenance activities, then owners must pay all of City’s costs incurred in performing the maintenance as defined in the maintenance agreement. 3.5 Vector Control Owner Responsibilities Any method to limit or eradicate the mammals, birds, insects or other arthropods which transmit disease pathogens. Management of mosquitoes and other vectors in stormwater management structures, such as Bioretention Facilities and Best Management Practices, is critical for protecting public health. In order to implement vector controls including minimizing the risk for mosquito-borne disease transmission, it is the responsibility of the Owner to regularly maintain the outlet structures and monitor the site after every storm event to ensure that the system (comprising of above and below ground storage facilities) is dewatered in less than 72 hours. Otherwise, the owner will be required to implement a vector control plan in accordance with California Department of Public Health. TABLE 7-6. Maintenance Indicators and Actions for Trash Captures BMPs Accumulation of sediment, litter, or debris Obstructed inlet or outkt structure Clogged tilter me<lia Damage 1:0 cornponeots of rhe filtration system l\laintcnancc Actions Remove and properly dispose accumulated materials. Oear obstroctions. Remove :1nd properly dispose filter media, and replace wi1h fre~h me<lia. Repair or replace as applicable. Note: For trash capture llMPs. refer to the manufacture.r's maimcnancc guide. 7 Maintain all drainage inlets and outlets trash free; remove silt; make sure to clear any standing water after 72-hours of ponding. ATTACHMENT 1FATTACHMENT A1 PROJECT VICINITY MAP VICINITY MAP: N.T.S ATTACHMENT 1FATTACHMENT B1 BF-1 Biofiltration BMP MAINTENANCE FACT SHEET FOR STRUCTURAL BMP BF-1 BIOFILTRATION Biofiltration facilities are vegetated surface water systems that filter water through vegetation, and soil or engineered media prior to discharge via underdrain or overflow to the downstream conveyance system. Biofiltration facilities have limited or no infiltration. They are typically designed to provide enough hydraulic head to move flows through the underdrain connection to the storm drain system. Typical biofiltration components include: • Inflow distribution mechanisms (e.g., perimeter flow spreader or filter strips) • Energy dissipation mechanism for concentrated inflows (e.g., splash blocks or riprap) • Shallow surface ponding for captured flows • Side slope and basin bottom vegetation selected based on climate and ponding depth • Non-floating mulch layer • Media layer (planting mix or engineered media) capable of supporting vegetation growth • Filter course layer consisting of aggregate to prevent the migration of fines into uncompacted native soils or the aggregate storage layer • Aggregate storage layer with underdrain(s) • Impermeable liner or uncompacted native soils at the bottom of the facility • Overflow structure Normal Expected Maintenance Biofiltration requires routine maintenance to: remove accumulated materials such as sediment, trash or debris; maintain vegetation health; maintain infiltration capacity of the media layer; replenish mulch; and maintain integrity of side slopes, inlets, energy dissipators, and outlets. A summary table of standard inspection and maintenance indicators is provided within this Fact Sheet. Non-Standard Maintenance or BMP Failure If any of the following scenarios are observed, the BMP is not performing as intended to protect downstream waterways from pollution and/or erosion. Corrective maintenance, increased inspection and maintenance, BMP replacement, or a different BMP type will be required. • The BMP is not drained between storm events. Surface ponding longer than approximately 24 hours following a storm event may be detrimental to vegetation health, and surface ponding longer than approximately 96 hours following a storm event poses a risk of vector (mosquito) breeding. Poor drainage can result from clogging of the media layer, filter course, aggregate storage layer, underdrain, or outlet structure. The specific cause of the drainage issue must be determined and corrected. • Sediment, trash, or debris accumulation greater than 25% of the surface ponding volume within one month. This means the load from the tributary drainage area is too high, reducing BMP function or clogging the BMP. This would require pretreatment measures within the tributary area draining to the BMP to intercept the materials. Pretreatment components, especially for sediment, will extend the life of components that are more expensive to replace such as media, filter course, and aggregate layers. • Erosion due to concentrated storm water runoff flow that is not readily corrected by adding erosion control blankets, adding stone at flow entry points, or minor re-grading to restore proper drainage according to the original plan. If the issue is not corrected by restoring the BMP to the original plan and grade, the [City Engineer] shall be contacted prior to any additional repairs or reconstruction. BF-1 Page 1 of 11 January 12, 2017 BF-1 Biofiltration Other Special Considerations Biofiltration is a vegetated structural BMP. Vegetated structural BMPs that are constructed in the vicinity of, or connected to, an existing jurisdictional water or wetland could inadvertently result in creation of expanded waters or wetlands. As such, vegetated structural BMPs have the potential to come under the jurisdiction of the United States Army Corps of Engineers, SDRWQCB, California Department of Fish and Wildlife, or the United States Fish and Wildlife Service. This could result in the need for specific resource agency permits and costly mitigation to perform maintenance of the structural BMP. Along with proper placement of a structural BMP, routine maintenance is key to preventing this scenario. BF-1 Page 2 of 11 January 12, 2017 BF-1 Biofiltration SUMMARY OF STANDARD INSPECTION AND MAINTENANCE FOR BF-1 BIOFILTRATION The property owner is responsible to ensure inspection, operation and maintenance of permanent BMPs on their property unless responsibility has been formally transferred to an agency, community facilities district, homeowners association, property owners association, or other special district. Maintenance frequencies listed in this table are average/typical frequencies. Actual maintenance needs are site-specific, and maintenance may be required more frequently. Maintenance must be performed whenever needed, based on maintenance indicators presented in this table. The BMP owner is responsible for conducting regular inspections to see when maintenance is needed based on the maintenance indicators. During the first year of operation of a structural BMP, inspection is recommended at least once prior to August 31 and then monthly from September through May. Inspection during a storm event is also recommended. After the initial period of frequent inspections, the minimum inspection and maintenance frequency can be determined based on the results of the first year inspections. Threshold/Indicator Maintenance Action Typical Maintenance Frequency Accumulation of sediment, litter, or debris Remove and properly dispose of accumulated materials, without damage to the vegetation or compaction of the media layer. • Inspect monthly. If the BMP is 25% full* or more in one month, increase inspection frequency to monthly plus after every 0.1-inch or larger storm event. • Remove any accumulated materials found at each inspection. Obstructed inlet or outlet structure Clear blockage. • Inspect monthly and after every 0.5-inch or larger storm event. • Remove any accumulated materials found at each inspection. Damage to structural components such as weirs, inlet or outlet structures Repair or replace as applicable • Inspect annually. • Maintenance when needed. Poor vegetation establishment Re-seed, re-plant, or re-establish vegetation per original plans. • Inspect monthly. • Maintenance when needed. Dead or diseased vegetation Remove dead or diseased vegetation, re-seed, re-plant, or re-establish vegetation per original plans. • Inspect monthly. • Maintenance when needed. Overgrown vegetation Mow or trim as appropriate. • Inspect monthly. • Maintenance when needed. 2/3 of mulch has decomposed, or mulch has been removed Remove decomposed fraction and top off with fresh mulch to a total depth of 3 inches. • Inspect monthly. • Replenish mulch annually, or more frequently when needed based on inspection. *“25% full” is defined as ¼ of the depth from the design bottom elevation to the crest of the outflow structure (e.g., if the height to the outflow opening is 12 inches from the bottom elevation, then the materials must be removed when there is 3 inches of accumulation – this should be marked on the outflow structure). BF-1 Page 3 of 11 January 12, 2017 BF-1 Biofiltration SUMMARY OF STANDARD INSPECTION AND MAINTENANCE FOR BF-1 BIOFILTRATION (Continued from previous page) Threshold/Indicator Maintenance Action Typical Maintenance Frequency Erosion due to concentrated irrigation flow Repair/re-seed/re-plant eroded areas and adjust the irrigation system. • Inspect monthly. • Maintenance when needed. Erosion due to concentrated storm water runoff flow Repair/re-seed/re-plant eroded areas, and make appropriate corrective measures such as adding erosion control blankets, adding stone at flow entry points, or minor re-grading to restore proper drainage according to the original plan. If the issue is not corrected by restoring the BMP to the original plan and grade, the [City Engineer] shall be contacted prior to any additional repairs or reconstruction. • Inspect after every 0.5-inch or larger storm event. If erosion due to storm water flow has been observed, increase inspection frequency to after every 0.1-inch or larger storm event. • Maintenance when needed. If the issue is not corrected by restoring the BMP to the original plan and grade, the [City Engineer] shall be contacted prior to any additional repairs or reconstruction. Standing water in BMP for longer than 24 hours following a storm event Surface ponding longer than approximately 24 hours following a storm event may be detrimental to vegetation health Make appropriate corrective measures such as adjusting irrigation system, removing obstructions of debris or invasive vegetation, clearing underdrains, or repairing/replacing clogged or compacted soils. • Inspect monthly and after every 0.5-inch or larger storm event. If standing water is observed, increase inspection frequency to after every 0.1-inch or larger storm event. • Maintenance when needed. Presence of mosquitos/larvae For images of egg rafts, larva, pupa, and adult mosquitos, see http://www.mosquito.org/biology If mosquitos/larvae are observed: first, immediately remove any standing water by dispersing to nearby landscaping; second, make corrective measures as applicable to restore BMP drainage to prevent standing water. If mosquitos persist following corrective measures to remove standing water, or if the BMP design does not meet the 96-hour drawdown criteria due to release rates controlled by an orifice installed on the underdrain, the [City Engineer] shall be contacted to determine a solution. A different BMP type, or a Vector Management Plan prepared with concurrence from the County of San Diego Department of Environmental Health, may be required. • Inspect monthly and after every 0.5-inch or larger storm event. If mosquitos are observed, increase inspection frequency to after every 0.1-inch or larger storm event. • Maintenance when needed. Underdrain clogged Clear blockage. • Inspect if standing water is observed for longer than 24-96 hours following a storm event. • Maintenance when needed. BF-1 Page 4 of 11 January 12, 2017 BF-1 Biofiltration References American Mosquito Control Association. http://www.mosquito.org/ California Storm Water Quality Association (CASQA). 2003. Municipal BMP Handbook. https://www.casqa.org/resources/bmp-handbooks/municipal-bmp-handbook County of San Diego. 2014. Low Impact Development Handbook. http://www.sandiegocounty.gov/content/sdc/dpw/watersheds/susmp/lid.html San Diego County Copermittees. 2016. Model BMP Design Manual, Appendix E, Fact Sheet BF-1. http://www.projectcleanwater.org/index.php?option=com_content&view=article&id=250&Itemid=220 BF-1 Page 5 of 11 January 12, 2017 BF-1 Biofiltration Page Intentionally Blank for Double-Sided Printing BF-1 Page 6 of 11 January 12, 2017 BF-1 Biofiltration Date: Inspector: BMP ID No.: Permit No.: APN(s): Property / Development Name: Responsible Party Name and Phone Number: Property Address of BMP: Responsible Party Address: INSPECTION AND MAINTENANCE CHECKLIST FOR BF-1 BIOFILTRATION PAGE 1 of 5 Threshold/Indicator Maintenance Recommendation Date Description of Maintenance Conducted Accumulation of sediment, litter, or debris Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Remove and properly dispose of accumulated materials, without damage to the vegetation ☐ If sediment, litter, or debris accumulation exceeds 25% of the surface ponding volume within one month (25% full*), add a forebay or other pre-treatment measures within the tributary area draining to the BMP to intercept the materials. ☐ Other / Comments: Poor vegetation establishment Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Re-seed, re-plant, or re-establish vegetation per original plans ☐ Other / Comments: *“25% full” is defined as ¼ of the depth from the design bottom elevation to the crest of the outflow structure (e.g., if the height to the outflow opening is 12 inches from the bottom elevation, then the materials must be removed when there is 3 inches of accumulation – this should be marked on the outflow structure). BF-1 Page 7 of 11 January 12, 2017 I I I BF-1 Biofiltration Date: Inspector: BMP ID No.: Permit No.: APN(s): INSPECTION AND MAINTENANCE CHECKLIST FOR BF-1 BIOFILTRATION PAGE 2 of 5 Threshold/Indicator Maintenance Recommendation Date Description of Maintenance Conducted Dead or diseased vegetation Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Remove dead or diseased vegetation, re- seed, re-plant, or re-establish vegetation per original plans ☐ Other / Comments: Overgrown vegetation Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Mow or trim as appropriate ☐ Other / Comments: 2/3 of mulch has decomposed, or mulch has been removed Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Remove decomposed fraction and top off with fresh mulch to a total depth of 3 inches ☐ Other / Comments: BF-1 Page 8 of 11 January 12, 2017 BF-1 Biofiltration Date: Inspector: BMP ID No.: Permit No.: APN(s): INSPECTION AND MAINTENANCE CHECKLIST FOR BF-1 BIOFILTRATION PAGE 3 of 5 Threshold/Indicator Maintenance Recommendation Date Description of Maintenance Conducted Erosion due to concentrated irrigation flow Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Repair/re-seed/re-plant eroded areas and adjust the irrigation system ☐ Other / Comments: Erosion due to concentrated storm water runoff flow Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Repair/re-seed/re-plant eroded areas, and make appropriate corrective measures such as adding erosion control blankets, adding stone at flow entry points, or minor re-grading to restore proper drainage according to the original plan ☐ If the issue is not corrected by restoring the BMP to the original plan and grade, the [City Engineer] shall be contacted prior to any additional repairs or reconstruction ☐ Other / Comments: BF-1 Page 9 of 11 January 12, 2017 BF-1 Biofiltration Date: Inspector: BMP ID No.: Permit No.: APN(s): INSPECTION AND MAINTENANCE CHECKLIST FOR BF-1 BIOFILTRATION PAGE 4 of 5 Threshold/Indicator Maintenance Recommendation Date Description of Maintenance Conducted Obstructed inlet or outlet structure Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Clear blockage ☐ Other / Comments: Underdrain clogged (inspect underdrain if standing water is observed for longer than 24-96 hours following a storm event) Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Clear blockage ☐ Other / Comments: Damage to structural components such as weirs, inlet or outlet structures Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Repair or replace as applicable ☐ Other / Comments: BF-1 Page 10 of 11 January 12, 2017 BF-1 Biofiltration Date: Inspector: BMP ID No.: Permit No.: APN(s): INSPECTION AND MAINTENANCE CHECKLIST FOR BF-1 BIOFILTRATION PAGE 5 of 5 Threshold/Indicator Maintenance Recommendation Date Description of Maintenance Conducted Standing water in BMP for longer than 24-96 hours following a storm event* Surface ponding longer than approximately 24 hours following a storm event may be detrimental to vegetation health Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Make appropriate corrective measures such as adjusting irrigation system, removing obstructions of debris or invasive vegetation, clearing underdrains, or repairing/replacing clogged or compacted soils ☐ Other / Comments: Presence of mosquitos/larvae For images of egg rafts, larva, pupa, and adult mosquitos, see http://www.mosquito.org/biology Maintenance Needed? ☐ YES ☐ NO ☐ N/A ☐ Apply corrective measures to remove standing water in BMP when standing water occurs for longer than 24-96 hours following a storm event.** ☐ Other / Comments: *Surface ponding longer than approximately 24 hours following a storm event may be detrimental to vegetation health, and surface ponding longer than approximately 96 hours following a storm event poses a risk of vector (mosquito) breeding. Poor drainage can result from clogging of the media layer, filter course, aggregate storage layer, underdrain, or outlet structure. The specific cause of the drainage issue must be determined and corrected. **If mosquitos persist following corrective measures to remove standing water, or if the BMP design does not meet the 96-hour drawdown criteria due to release rates controlled by an orifice installed on the underdrain, the [City Engineer] shall be contacted to determine a solution. A different BMP type, or a Vector Management Plan prepared with concurrence from the County of San Diego Department of Environmental Health, may be required. BF-1 Page 11 of 11 January 12, 2017 Inspection and Maintenance Guide DRAIN A G E P R OTECTION SY ST E M S A division of Oldcastle Infrastructure FLOGARD+PLUS® CATCH BASIN INSERT FILTER 0 Oldcastle lnfrast~~S!~!'.( ()water SCOPE: Federal, State and Local Clean Water Act regulations and those of insurance carriers require that stormwater filtration systems be maintained and serviced on a recurring basis. The intent of the regulations is to ensure that the systems, on a continuing basis, efficiently remove pollutants from stormwater runoff thereby preventing pollution of the nation’s water resources. These specifications apply to the FloGard+Plus® Catch Basin Insert Filter. RECOMMENDED FREQUENCY OF SERVICE: Drainage Protection Systems (DPS) recommends that installed FloGard+Plus Catch Basin Insert Filters be serviced on a recurring basis. Ultimately, the frequency depends on the amount of runoff, pollutant loading and interference from debris (leaves, vegetation, cans, paper, etc.); however, it is recommended that each installation be serviced a minimum of three times per year, with a change of filter medium once per year. DPS technicians are available to do an on-site evaluation, upon request. RECOMMENDED TIMING OF SERVICE: DPS guidelines for the timing of service are as follows: 1.For areas with a definite rainy season: Prior to, during and following the rainy season. 2.For areas subject to year-round rainfall: On a recurring basis (at least three times per year). 3.For areas with winter snow and summer rain: Prior to and just after the snow season and during thesummer rain season.4.For installed devices not subject to the elements (wash racks, parking garages, etc.): On a recurring basis (no less than three times per year). SERVICE PROCEDURES: 1.The catch basin grate shall be removed and set to one side. The catch basin shall be visually inspectedfor defects and possible illegal dumping. If illegal dumping has occurred, the proper authorities and property owner representative shall be notified as soon as practicable. 2.Using an industrial vacuum, the collected materials shall be removed from the liner. (Note: DPS uses a truck-mounted vacuum for servicing FloGard+Plus catch basin inserts).3.When all of the collected materials have been removed, the filter medium pouches shall be removedby unsnapping the tether from the D-ring and set to one side. The filter liner, gaskets, stainless steel frame and mounting brackets, etc., shall be inspected for continued serviceability. Minor damage or defects found shall be corrected on-the-spot and a notation made on the Maintenance Record. More extensive deficiencies that affect the efficiency of the filter (torn liner, etc.), if approved by thecustomer representative, will be corrected and an invoice submitted to the representative along with theMaintenance Record. 4.The filter medium pouches shall be inspected for defects and continued serviceability and replaced as necessary, and the pouch tethers re-attached to the liner’s D-ring.5.The grate shall be replaced. REPLACEMENT AND DISPOSAL OF EXPOSED FILTER MEDIUM AND COLLECTED DEBRIS The frequency of filter medium exchange will be in accordance with the existing DPS-Customer Maintenance Contract. DPS recommends that the medium be changed at least once per year. During the appropriate service, or if so determined by the service technician during a non-scheduled service, the filter medium will be replaced with new material. Once the exposed pouches and debris have been removed, DPS has possession and must dispose of it in accordance with local, state and federal agency requirements. DPS also has the capability of servicing all manner of storm drain filters, catch basin inserts and catch basins without inserts, underground oil/water separators, stormwater interceptors and other such devices. All DPS personnel are highly qualified technicians and are confined-space trained and certified. Call us at (888) 950-8826 for further information and assistance. 2 PART 1 — GENERAL 1.1 Section Includes FloGard® Catch Basin Insert Filter – catch basin filtration device for stormwater treatment. 1.2 References American Society for Testing and Materials (ASTM) 1.ASTM A2402.ASTM D37863.ASTM D43554.ASTM D44915.ASTM D45336.ASTM D46327.ASTM D47518.ASTM D48339.ASTM D499110.ASTM D5261 PART 2 — PRODUCTS 2.1 Description This specification describes a Catch Basin Filtration Device that removes sediment, debris, trash and petroleum hydrocarbons (oil and grease) from water flowing into the drainage inlets during low flows (first flush) without impeding the inlet’s maximum design flow. Hydraulic calculations shall be supplied upon request. The filtration device shall incorporate a sorbent capable of collecting and containing non-soluble pollutants including, but not limited to, petroleum hydrocarbons (oil and grease). Sorbent shall be contained in separate removable containers that can easily be replaced without removing the filter liner. Filtration device shall not rely on collected sediment, debris, trash or filter liner as the medium for hydrocarbon collection. High capacity filtration devices shall incorporate a debris trap, designed to retain floatable pollutants during high flow periods and both an initial filtering bypass for moderate flows and an ultimate bypass for peak design flows. The installed device shall not impede drainage inlet’s peak design flow prior to or after the device has reached its pollutant storage capacity. 2.2 Materials Filtration device support frame and hardware shall be manufactured from Type 304 stainless steel. It shall be designed to support maximum anticipated loads from the collected pollutants and water. Field modifications, welding or painting of the device shall not be allowed. Device shall incorporate a removable filter liner made from a woven polypropylene monofilament geotextile with an apparent opening size less than 35 US Mesh and a clean flow rate of not less than 145 gallons per minute (gpm) per square foot, or stainless steel screen with opening size between 4 and 200 US Mesh. The use of a non-woven geotextile filter liner shall not be allowed. Sorbent shall be a hydrophobic material treated to attract and retain petroleum hydrocarbons and other non-soluble pollutants. It shall be non-biodegradable and non-leaching and contain no hazardous ingredients as defined by the U.S. Environmental Protection Agency (EPA). 2.3 Manufacturer Each catch basin filter device shall be a FloGard as manufactured by Oldcastle Infrastructure, 7100 Longe St, Stockton, California 95206. Phone: (800) 579-8819. PART 3 — EXECUTION 3.1 Installation Installation of filtration device shall not require extensive modification of the catch basin and shall be performed by a manufacturer-approved installation contractor. Installation contractor shall be licensed and insured in accordance with agency requirements. Filtration devices installed into grated, or combination grate with curb opening inlets shall be either supported by resting the support brackets on the grate bearing ledge (installed without the use of bolts or other anchoring devices) or mounted to the catch basin wall with easily removable separate wall mount brackets to allow for quick access to the piping system in the event of an emergency. Devices for curb opening style inlets (no grate) shall be installed across the entire width of the curb opening and shall be secured to inlet wall, across and beneath the curb opening, using corrosion-resistant anchors (Type 304 stainless steel). The use of chains or cable to secure the device shall not be allowed. Filtration devices shall be installed in such a manner as to direct all flows into the device. Distance (gaps) between the inlet wall and the device shall not exceed one half inch. Gaps of less than one half inch shall be sealed with a flexible weatherproof sealant, as approved by agency. Installation contractor shall supply agency (engineer) with an installation record, denoting the date of installation, drainage inlet location, type of drainage inlet and type and/or size of filtration device. Kristar Enterprises 1219 Briggs AvenueSanta Rosa, CA95401 (800) 579-8819 www.kristar.com Street Deposited Sediment Typical Particle Size Distribution from urban runoff TSS survey data 0.0 20.0 40.0 60.0 80.0 100.0 10 10 0 1000 10000 Particle Size (micron) Fr a c t i o n Fi n e r b y We i g h t ( % ) Woodward-Clyde (1997)Honolulu StreetSediment(2004) FloGard +Plus® TSS Removal Typical Urban Runoff Distribution* *extrapolated from available field test data 020406080100 0 20 40 60 80 100 120 140 Flux (gpm/sq ft) % re m o v a l FloGard +Plus Linear (FloGard +Plus) Testing Agency % TSS Removal % Oil & Grease Removal UCLA 80*70-80 U of AucklandTonkin & Taylor Ltd(for City of Auck- land) 95**78-86*** U of Hawaii (for Cityof Honolulu) 80*** FloGard +PLUS ®Test Results Summary *Sand larger than ~575 µm**Sand distribution ~100-1000 µm***Local street sweep material (distribution consistent with NURP) FLOGARD +PLUS® Independent field tests conducted in Hawaii and New Zealand on FloGard +PLUS® Catch Basin Insert Filters to determine removal efficiency of Total Suspended Solids (TSS). Results were extrapolated to a typical street deposited sediment particle size. Removal efficiencies were plotted and reflect effective TSS removal over a typical range of operating flow rates. Results are shown below as a function of unit internal surface area. % re m o v a l Kristar Enterprises 1219 Briggs Avenue Santa Rosa, CA 95401 (800) 579-8819 www.kristar.com Street Deposited Sediment Typical Particle Size Distribution from urban runoff TSS survey data 0.0 20.0 40.0 60.0 80.0 100.0 10 10 0 1000 10000 Particle Size (micron) Fr a c t i o n Fi n e r b y We i g h t ( % ) Woodward-Clyde (1997)Honolulu Street Sediment (2004) FloGard +Plus® TSS Removal Typical Urban Runoff Distribution* *extrapolated from available field test data 020406080100 0 20 40 60 80 100 120 140 Flux (gpm/sq ft) % re m o v a l FloGard +Plus Linear (FloGard +Plus) Testing Agency % TSS Removal % Oil & Grease Removal UCLA 80*70-80 U of AucklandTonkin & Taylor Ltd (for City of Auck- land) 95** 78-86*** U of Hawaii (for Cityof Honolulu) 80*** FloGard +PLUS ®Test Results Summary *Sand larger than ~575 µm**Sand distribution ~100-1000 µm***Local street sweep material (distribution consistent with NURP) Units are sized to fit most common styles of drainage inlet grate frames or inlet widths. Rated filtered flow capacities for each model typically exceed the required “first flush” treatment flow rate, and account for reduction in capacity as the unit accumulates suspended pollutants. Rated bypass capacity for each model also typically exceeds the inlet capacity of the catch basin. FloGard +PLUS® Catch Basin Insert Filter is an efficient inlet prefilter designed to remove suspended sediment and floatable trash and hydrocarbons from stormwater runoff in new or retrofit applications. It is ideally suited for removal of primary pollutants from paved surfaces in commercial and residential areas, or may form part of a treatment train. The device features a unique dual-bypass design, durable components, flexible installation options and easy maintenance access. Testing Agency %TSS Removal % Oil & Grease Removal UCLA 80*70-80 U of Auckland Tonkin & Taylor LTD (City of Auckland) U of Hawaii (City of Honolulu)80*** 95** 78-86*** FloGard +PLUS® Test Results Summary *Sand larger than ~ 575 um **Sand distribution ~ 100-1000 um ***Local street sweep material (distribution consistent with NURP) www.oldcastleinfrastructure.com | 800-579-8819 See product specifications for standard model details. ® 0 Oldcastle lnfrast~~S~!'.( • Owater STANDARD DEPTH INLET ID Inside Dimension (inch x inch) GRADE OD Outside Dimension (inch x inch) TOTAL BYPASS CAPACITY (cu. ft. / sec.) SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) SHALLOW DEPTH SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) FGP-1633FGO 16 X 33 18 X 36 7.0 2.5 1.7 FGP-1633FGO8 1.4 1.1 FGP-1836FGO 18 X 36 18 X 40 6.9 2.3 1.6 FGP-1836FGO8 1.3 .9 FGP-2234FGO 22 X 34 24 X 36 8.1 3.6 2.1 FGP-2234FGO8 2.1 1.4 FGP-2436FGO 24 X 36 24 X 40 8.0 3.4 2.0 FGP-2436FGO8 1.95 1.15 STANDARD DEPTH INLET ID Inside Dimension (inch x inch) GRADE OD Outside Dimension (inch x inch) TOTAL BYPASS CAPACITY (cu. ft. / sec.) SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) SHALLOW DEPTH SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) FGP-12F 12 X 12 12 X 14 2.8 0.3 0.4 FGP-12F8 .15 .25 FGP-16F 16 X 16 16 X 19 4.7 0.8 0.7 FGP-16F8 .45 .4 FGP-18F 18 X 18 18 X 20 4.7 0.8 0.7 FGP-18F8 .45 .4 FGP-1836F 18 X 36 18 X 40 6.9 2.3 1.6 FGP-1836F8 1.3 .9 FGP-21F 22 X 22 22 X 24 6.1 2.2 1.5 FGP-21F8 1.25 .85 FGP-24F 24 X 24 24 X 27 6.1 2.2 1.5 FGP-24F8 1.25 .85 FGP-2436F 24 X 36 24 X 40 8.0 3.4 2.0 FGP-2436F8 1.95 1.15 FGP-2448F 24 X 48 24 X 48 9.3 4.4 2.4 FGP-2448F8 2.5 1.35 FGP-32F-TN 28 X 28 32 X 32 6.3 2.2 1.5 FGP-32F8-TN 1.25 .85 FGP-30F 30 X 30 30 X 34 8.1 3.6 2.0 FGP-30F8 2.05 1.15 FGP-36F 36 X 36 36 X 40 9.1 4.6 2.4 FGP-36F8 2.65 1.35 FGP-3648F 36 X 48 40 X 48 11.5 6.8 3.2 FGP-3648F8 3.9 1.85 FGP-48F 48 X 48 48 X 54 13.2 9.5 3.9 FGP-48F8 5.45 2.25 FGP-1633F 16 X 34 18 X 36 6.9 2.3 1.6 FGP-1633F8 1.3 .9 FGP-2234F 22 X 34 24 X 36 8.0 3.4 2.0 FGP-2234F8 1.95 1.15 STANDARD DEPTH -20 Inches- SHALLOW DEPTH -12 Inches- FloGard Combination Inlet SPECIFIER CHART STANDARD & SHALLOW DEPTH (Data in these columns is the same for both STANDARD & SHALLOW versions)MODEL NO.MODEL NO. FloGard Flat Grated Inlet SPECIFIER CHART STANDARD & SHALLOW DEPTH (Data in these columns is the same for both STANDARD & SHALLOW versions) STANDARD DEPTH -20 Inches- SHALLOW DEPTH -12 Inches- MODEL NO.MODEL NO. U.S. PATENT #6,551,023 & 6,872,029 * MANY OTHER STANDARD & CUSTOM SIZES AND DEPTHS AVAILABLE UPON REQUEST. .. • "ULTIMATE" BYPASS FEATURE (LOUVERS & OPENINGS) SEE DETAIL C ... DEPlli STANDARD = 20 INCHES SHALLOW = 12 INCHES *CUSTOM DETAIL B SECTION VIEW FloGard" FILTER -I NSTALLED- "ULTIMATE" BYPASS FEATURE (LOUVERS & OPENINGS) DETAIL C ''ULTIMATE" BYPASS FEATURE BUILDINGSTRUCTURES OUR MARKETS TRANSPORTATION WATER ENERGYCOMMUNICATIONS June 2019 v.1 www.oldcastleinfrastructure.com 800-579-8819 FLOGARD® CATCH BASININSERT FILTER I : I 0 Oldcastle lnfrast~~S!~~f I ()water STORMWATER Removes Pollutants from Runoff Prior to Entering Waterways Two-part stainless-steel insert to filter solids and oils/grease. Easy to install, inspect and maintain, even on small and confined sites. Efficient System Catches pollutants where they are easiest to catch, at the inlet. Variable Design Able to be retrofitted or used in new projects. Treatment Train Can be incorporated as part of a “Treatment Train”. No Standing Water Helps to minimize bacteria and odor problems. Focused Treatment Removes petroleum hydrocarbons, trash and Total Suspended Solids (TSS). Maximum Flexibility Available in a variety of standard sizes to fit round and square inlets. Economical Earn a higher return on system investment. By the Numbers*: Filter will remove up to 80% of Total Suspended Solids (TSS), at least 70% of oils and grease, and up to 40% of Total Phosphorus (TP) associated with organic debris as well as Polycyclic Aromatic Hydrocarbons (PAH) from oil leaks and spills. *Approximate for urban street application. CATCH BASIN FILTER TEST RESULTS SUMMARY Testing Agency % TSS Removal % Oil & Grease Removal % PAH Removal UCLA 80 70 to 80 U of Auckland Tonking & Taylor, Ltd(for City of Auckland) 78 to 95 U of Hawaii (for City of Honolulu) 80 20 to 40 INLET FILTRATION PUT A STOP to TSS 0 Oklcastle lnfrast~~S!!;!~~· 0 PUT A STOPto TSS Multi-Purpose Catch Basin Insert Retains Sediment, Debris, Trash and Oils/Grease FloGard® catch basin insert filters are recommended for areas subject to silt and debris as well as low-to-moderate levels of petroleum hydrocarbons (oils and grease). Examples of such areas include vehicle parking lots, aircraft ramps, truck and bus storage yards, business parks, residential and public streets. Flat-Grated Inlet Circular Frame InletCaptured debris from FloGard catch basin insert filter in Dana Point, California. Combination Inlet CATCH BASIN FILTER COMPETITIVE FEATURE COMPARISON Evaluation of Catch Basin Filters (Based on flow-comparable units) (Scale 1-10) Oldcastle Other Insert Filter Types** Flow Rate 10 7 Removal Efficiency*80%45% Capacity - Sludge & Oil 7 7 Service Life 10 3 Installation - Ease of Handling / Installation 8 6 Ease of Inspections & Maintenance 7 7 Value 10 2 *Approximate, based on field sediment removal testing in urban street application **Average Long-Term Value Comparison (Based on flow-comparable units) (Scale 1-10) Oldcastle Other Insert Filter Types** Unit Value - Initial ($/cfs treated)10 4 Installation Value ($/cfs treated)10 7 Absorbent Replacement (annual avg ($/cfs treated)10 2 Materials Replacement Value (annual avg ($/cfs treated)10 10 Maintenance Value (annual avg ($/cfs treated)10 7 Total First Year ROI ($/cfs treated)10 5 Total Annual Avg Value ($/cfs treated, avg over 20 yrs)*10 5 (800) 579-8819 oldcastleinfrastructure.com (I Oldcastle lnfrast~~l\;!~f 0 STORMWATER INLET FILTRATION FLOGARD®Catch Basin Insert Filter Catch basin insert designed to capture sediment, gross solids, trash and petroleum hydrocarbons from low (“first flush”) flows, even during the most extreme weather conditions Flat-Grated Inlet Circular Frame Inlet Combination Inlet Example Types, Sizes and Capacities: Additional sizes, including regional and custom options are available. FloGard Combination Inlet STANDARD DEPTH INLET ID Inside Dimension (inch x inch) GRADE OD Outside Dimension (inch x inch) TOTAL BYPASS CAPACITY (cu. ft. / sec.) SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) SHALLOW DEPTH SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) FGP-1633FGO 16 X 33 18 X 36 7.0 2.5 1.7 FGP-1633FGO8 1.4 1.1 FGP-1836FGO 18 X 36 18 X 40 6.9 2.3 1.6 FGP-1836FGO8 1.3 .9 FGP-2234FGO 22 X 34 24 X 36 8.1 3.6 2.1 FGP-2234FGO8 2.1 1.4 FGP-2436FGO 24 X 36 24 X 40 8.0 3.4 2.0 FGP-2436FGO8 1.95 1.15 STANDARD DEPTH INLET ID Inside Dimension (inch x inch) GRADE OD Outside Dimension (inch x inch) TOTAL BYPASS CAPACITY (cu. ft. / sec.) SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) SHALLOW DEPTH SOLIDS STORAGE CAPACITY (cu. ft.) FILTERED FLOW (cu. ft. / sec.) FGP-12F 12 X 12 12 X 14 2.8 0.3 0.4 FGP-12F8 .15 .25 FGP-16F 16 X 16 16 X 19 4.7 0.8 0.7 FGP-16F8 .45 .4FGP-18F 18 X 18 18 X 20 4.7 0.8 0.7 FGP-18F8 .45 .4 FGP-1836F 18 X 36 18 X 40 6.9 2.3 1.6 FGP-1836F8 1.3 .9 FGP-21F 22 X 22 22 X 24 6.1 2.2 1.5 FGP-21F8 1.25 .85 FGP-24F 24 X 24 24 X 27 6.1 2.2 1.5 FGP-24F8 1.25 .85 FGP-2436F 24 X 36 24 X 40 8.0 3.4 2.0 FGP-2436F8 1.95 1.15 FGP-2448F 24 X 48 24 X 48 9.3 4.4 2.4 FGP-2448F8 2.5 1.35 FGP-32F-TN 28 X 28 32 X 32 6.3 2.2 1.5 FGP-32F8-TN 1.25 .85 FGP-30F 30 X 30 30 X 34 8.1 3.6 2.0 FGP-30F8 2.05 1.15 FGP-36F 36 X 36 36 X 40 9.1 4.6 2.4 FGP-36F8 2.65 1.35 FGP-3648F 36 X 48 40 X 48 11.5 6.8 3.2 FGP-3648F8 3.9 1.85 FGP-48F 48 X 48 48 X 54 13.2 9.5 3.9 FGP-48F8 5.45 2.25 FGP-1633F 16 X 34 18 X 36 6.9 2.3 1.6 FGP-1633F8 1.3 .9 FGP-2234F 22 X 34 24 X 36 8.0 3.4 2.0 FGP-2234F8 1.95 1.15 FloGard Flat Grated Inlet SPECIFIER CHARTSTANDARD & SHALLOW DEPTH (Data in these columns is the same for both STANDARD & SHALLOW versions) STANDARD DEPTH -20 Inches- SHALLOW DEPTH -12 Inches-MODEL NO.MODEL NO. STANDARD DEPTH -20 Inches- SHALLOW DEPTH -12 Inches- SPECIFIER CHARTSTANDARD & SHALLOW DEPTH (Data in these columns is the same for both STANDARD & SHALLOW versions)MODEL NO.MODEL NO. MODEL NUMBER INLET ID (inches) GRADE OD (inches) SOLIDS STORAGE CAPACITY (CU FT) FILTERED FLOW (CSF) TOTAL BYPASS CAPACITY (CFS) FGP-RF15F 15 18 0.3 0.4 2.8 FGP-RF18F 18 20 0.8 0.7 4.7 FGP-RF20F 20 23 0.8 0.7 4.7 FGP-RF21F 21 23.5 0.8 0.7 4.7 FGP-RF22F 22 24 0.8 0.7 4.7 FGP-RF24F 24 26 0.8 0.7 4.7 FGP-RF30F 30 32 2.2 1.5 6.1 FGP-RF36F 36 39 3.6 2.0 8.1 FloGard Circular Grated Inlet SPECIFIER CHART 0 Oklcastle lnfrast~~S!!;!~~· 0 U.S. PATENT #6,551,023 & 6,872,029 FloGard® FILTER -INSTALLED INTO CATCH BASIN- GRATE ------"'<:, "ULllMATE" BYPASS FEATURES GASKET STAINLl:SS STEEL SUPPORT BASKET - Fossil Rock7"' ABSORBENT POUCHES LINER ----- SUP-PORT BASKET --- CATQ-l BASIN (FLAT GRATE STYLE) DETAIL A EXPLODED VIEW NOTTS: l f ilter insert shall have a high flow bypass feature. 2 Filter support frame shall l::e constructed from stainless steel Type 304. 3. 4. Filter medium shall l::e Fossil Rode installed and maintained ii accordance with manufacturer specifications. Storage capacity reflects SY/4 of maximum solids collection prior to impeding filtering bypass. December 2018 v.1 Rubberizer® transforms spilled hydrocarbons into a rubber-like solid on contact, and does not re-release when it is retrieved. The solidification process is non-chemical in nature allowing the US EPA to classify Rubberizer as a sorbent. This product, which comes in booms, pillows or granular form, can be used to clean oil from bilges, deck spills, around hydraulic storage tanks, under hydraulic machinery, in all engineering spaces and most importantly, in any hydrocarbon fuel spill where leaking oil comes in contact with water. Rubberizer has been used in clean-up operations around the world and is patented in 22 countries. The key advantages of the Rubberizer product line when compared to many of the characteristics of the more conventional products include: •Works on land or water borne spills•Remains buoyant•Solidifies and is landfill approved •Resistant to leaching •Does not release solidified oils under pressure •Incinerates with less that .1% residual ash•Reduces overall clean-up time•Reduces overall costs Rubberizer products sorb and transform into a rubber-like material similar to many petroleum based products like: •Gasoline •Jet Fuel •Diesel Fuels •Transformer Oils•Hydraulic Oils•Lube Oils •Aromatic Solvents •Chlorinated Solvents •Light Crudes 1 How Rubberizer® (Fossil Rock) Products Work* Rubberizer particulate is a mixture of hydrocarbon polymers plus additives resulting in a grainy material used primarily for cleanup operations where sweeping and shoveling are involved. It can also be used for clarification of various emulsions, or solidification and removal of various petroleum based slicks from the surface of water which is in a controlled state. 0 Oldcastle lnfrast~~S~!'.( December 2018 v.12 This product, (and the booms and pillows) in which it is the filler, exhibit characteristics that include: •Lightweight enabling rapid deployment and retrieval (apparent specific gravity approximately = 0.4) •Rapid sorption and solidification (measured in minutes), hydrophobic (no affinity for water)•Permanently buoyant (both before and after sorption)•Will not release solidified liquids under pressure •Resistant to leaching upon aqueous contact •High sorbed liquid to sorbent ratios (nominally 5 parts liquid to 1 part sorbent)•Minimal incineration residue (less than .1%)•Little volume increase of sorbed liquids (15% in laboratory tests, nominally 25% in field applications) One pound of this product will solidify into a rubber-like material up to 2/3 gallon of jet fuel, diesel, gasoline,transformer oil, hydraulic oils, light crude and many other liquids. *Rubberizer® = Fossil Rock 0 Oldcastle lnfrast~~S~!'.( Inspection and Maintenance Guide FLOGARD® LOPRO TRENCH DRAIN FILTER DRAIN A G E P R OTECTION SY ST E M S A division of Oldcastle Infrastructure 0 Oldcastle lnfrast~~S!~!'.( ()water SCOPE: Federal, State and Local Clean Water Act regulations and those of insurance carriers require that stormwater filtration systems be maintained and serviced on a recurring basis. The intent of the regulations is to ensure that the systems, on a continuing basis, efficiently remove pollutants from stormwater runoff thereby preventing pollution of the nation’s water resources. These specifications apply to the FloGard® LoPro Trench Drain Filter. RECOMMENDED FREQUENCY OF SERVICE: Drainage Protection Systems (DPS) recommends that installed FloGard LoPro Trench Drain Filters be serviced on a recurring basis. Ultimately, the frequency depends on the amount of runoff, pollutant loading and interference from debris (leaves, vegetation, cans, paper, etc.); however, it is recommended that each installation be serviced a minimum of three times per year, with a change of filter medium once per year. DPS technicians are available to do an on-site evaluation, upon request. RECOMMENDED TIMING OF SERVICE: DPS guidelines for the timing of service are as follows: 1. For areas with a definite rainy season: Prior to, during and following the rainy season. 2. For areas subject to year-round rainfall: On a recurring basis (at least three times per year).3. For areas with winter snow and summer rain: Prior to and just after the snow season and during the summer rain season. 4. For installed devices not subject to the elements (washracks, parking garages, etc.): On a recurring basis (no less than three times per year). SERVICE PROCEDURES: 1. The trench drain grate(s) shall be removed and set to one side. 2. The service shall commence with collection and removal of sediment and debris (litter, leaves, papers, cans, etc.). 3. The trench drain shall be visually inspected for defects and possible illegal dumping. If illegal dumping has occurred, the proper authorities and property owner representative shall be notified as soon as practicable. 4. Using an industrial vacuum, the collected materials shall be removed from the filter liner. (Note: DPS uses a truck-mounted vacuum for servicing FloGard LoPro Trench Drain Filters.) 5. When all of the collected materials have been removed, the filter assembly shall be removed from the drainage inlet. The outer filter liner shall be removed from the filter assembly and filter medium pouches shall be removed by unsnapping the tether from the interior ring and sent to one side. The filter liner, PVC body and fittings shall be inspected for continued serviceability. Minor damage or defects found shall be corrected on the spot and a notation made on the Maintenance Record. More extensive deficiencies that affect the efficiency of the filter (torn liner, etc.), if approved by the customer representative, will be corrected and a quote submitted to the representative along with the Maintenance Record. 6. The filter liner and filter medium pouches shall be inspected for defects and continued serviceability and replaced as necessary and the pouch tethers re-attached to the PVC body interior ring. 7. The grate(s) shall be replaced. 2 INSPECTION AND MAINTENANCE GUIDE0 Oldcastle lnfrast~~S!~!'.( 3 REPLACEMENT AND DISPOSAL OF EXPOSED FILTER MEDIUM AND COLLECTED DEBRIS The frequency of filter medium exchange will be in accordance with the existing DPS-Customer Maintenance Contract. DPS recommends that the medium be changed at least once per year. During the appropriate service, or if so determined by the service technician during a non-scheduled service, the filter medium pouches will be replaced. Once the exposed pouches and debris have been removed, DPS has possession and must dispose of it in accordance with local, state and federal agency requirements. DPS also has the capability of servicing all manner of storm drain filters, catch basin inserts and catch basins without inserts, underground oil/water separators, stormwater interceptors and other such devices. All DPS personnel are highly qualified technicians and are confined-space trained and certified. Call us at (888) 950-8826 for further information and assistance. BUILDINGSTRUCTURES OUR MARKETS TRANSPORTATION WATER ENERGYCOMMUNICATIONS January 2019 v.1 www.oldcastleinfrastructure.com 800-579-8819 FLOGARD® LOPRO TRENCH DRAIN FILTER I : I 0 Oldcastle lnfrast~~S!~~f I ()water Kristar Enterprises 1219 Briggs Avenue Santa Rosa, CA 95401 (800) 579-8819 www.kristar.com Street Deposited Sediment Typical Particle Size Distribution from urban runoff TSS survey data 0.0 20.0 40.0 60.0 80.0 100.0 10 10 0 1000 10000 Particle Size (micron) Fr a c t i o n Fi n e r b y We i g h t ( % ) Woodward-Clyde (1997)Honolulu Street Sediment (2004) FloGard +Plus® TSS Removal Typical Urban Runoff Distribution* *extrapolated from available field test data 020406080100 0 20 40 60 80 100 120 140 Flux (gpm/sq ft) % re m o v a l FloGard +Plus Linear (FloGard +Plus) Testing Agency % TSS Removal % Oil & Grease Removal UCLA 80*70-80 U of AucklandTonkin & Taylor Ltd(for City of Auck- land) 95**78-86*** U of Hawaii (for City of Honolulu)80*** FloGard +PLUS® Test Results Summary *Sand larger than ~575 µm **Sand distribution ~100-1000 µm ***Local street sweep material (distribution consistent with NURP) FLOGARD +PLUS® Independent field tests conducted in Hawaii and New Zealand on FloGard +PLUS® Catch Basin Insert Filters to determine removal efficiency of Total Suspended Solids (TSS). Results were extrapolated to a typical street deposited sediment particle size. Removal efficiencies were plotted and reflect effective TSS removal over a typical range of operating flow rates. Results are shown below as a function of unit internal surface area. % re m o v a l Kristar Enterprises 1219 Briggs Avenue Santa Rosa, CA 95401 (800) 579-8819 www.kristar.com Street Deposited Sediment Typical Particle Size Distribution from urban runoff TSS survey data 0.0 20.0 40.0 60.0 80.0 100.0 10 10 0 1000 10000 Particle Size (micron) Fr a c t i o n Fi n e r b y We i g h t ( % ) Woodward-Clyde (1997)Honolulu Street Sediment (2004) FloGard +Plus® TSS Removal Typical Urban Runoff Distribution* *extrapolated from available field test data 020406080100 0 20 40 60 80 100 120 140 Flux (gpm/sq ft) % re m o v a l FloGard +Plus Linear (FloGard +Plus) Testing Agency % TSS Removal % Oil & Grease Removal UCLA 80*70-80 U of AucklandTonkin & Taylor Ltd (for City of Auck- land) 95** 78-86*** U of Hawaii (for City of Honolulu)80*** FloGard +PLUS® Test Results Summary *Sand larger than ~575 µm **Sand distribution ~100-1000 µm ***Local street sweep material (distribution consistent with NURP) Units are sized to fit most common styles of drainage inlet grate frames or inlet widths. Rated filtered flow capacities for each model typically exceed the required “first flush” treatment flow rate, and account for reduction in capacity as the unit accumulates suspended pollutants. Rated bypass capacity for each model also typically exceeds the inlet capacity of the catch basin. FloGard +PLUS® Catch Basin Insert Filter is an efficient inlet prefilter designed to remove suspended sediment and floatable trash and hydrocarbons from stormwater runoff in new or retrofit applications. It is ideally suited for removal of primary pollutants from paved surfaces in commercial and residential areas, or may form part of a treatment train. The device features a unique dual-bypass design, durable components, flexible installation options and easy maintenance access. Testing Agency %TSS Removal % Oil & Grease Removal UCLA 80*70-80 U of Auckland Tonkin & Taylor LTD (City of Auckland) U of Hawaii (City of Honolulu)80*** 95** 78-86*** FloGard +PLUS® Test Results Summary *Sand larger than ~ 575 um **Sand distribution ~ 100-1000 um ***Local street sweep material (distribution consistent with NURP) www.oldcastleinfrastructure.com | 800-579-8819 See product specifications for standard model details. TECHNICAL NOTE ® 0 Oldcastle lnfrast~~S~!'.( • Owater Assembly & Installation Instruction Manual FLOGARD® TRENCH DRAIN FILTERS • Stormwater March 2018 v.1 INCLUDED IN YOUR TRENCH DRAIN FILTER KIT: 1) TRENCH DRAIN OUTLET ADAPTER 2) PVC TRENCH DRAIN FILTER HOUSING 3) PVC HOUSING COUPLER 4) PVC END CAP 5) FOSSIL ROCK FILTER POUCH 6) FILTER BAG ADDITIONAL EQUIPMENT RECOMMENDED: RUBBER MALLET STRING/FISH TAPE INSTALLATION: 1. BEGIN BY REMOVING GRATES AND CLEARING THE TRENCH OF ANY DEBRIS WHICH MAY BE PRESENT, INCLUDING LEAVES, TRASH AND DIRT. 2. AFTER TRENCH IS CLEARED, LOCATE THE TRENCH DRAIN OUTLET ADAPTER, THIS IS THE STAINLESS STEEL VENTED HOOD INCLUDED IN YOUR KIT. (IF THE OUTLET OF YOUR TRENCH IS LOCATED IN THE MIDDLE OF YOUR TRENCH, YOU WILL HAVE TWO TRENCH DRAIN OUTLET ADAPTERS. THESE UNITS WILL BE PLACED BACK TO BACK WITH FILTER MOVING OUT AWAY FROM YOUR OUTLET.) 3. AFTER THE TRENCH DRAIN OUTLET ADAPTER HAS BEEN IDENTIFIED, LOCATE THE OUTLET OF YOUR TRENCH AND ENSURE THE TRENCH DRAIN OUTLET ADAPTER WILL FIT OVER YOUR OUTLET AND SNUGGLY INSIDE THE TRENCH WALLS. THE PVC COUPLER ATTACHED TO YOUR TRENCH DRAIN OUTLET ADAPTER WILL BE DIRECTED DOWN THE TRENCH. 1 FloGard® Trench Drain Filters March 2018 v.12 4. AFTER FIT HAS BEEN CONFIRMED, REMOVE THE TRENCH DRAIN OUTLET ADAPTER AND PLACE ADJACENT TO THE TRENCH AND BEGIN TO LAY OUT THE REST OF THE INCLUDED COMPONENTS. MATCHING FOSSIL ROCK FILTER POUCHES (IF MULTIPLE) WITH MATCHING LENGTHS OF FILTER HOUSING. (IF YOUR TRENCH IS DESIGNED WITH CROSS BRACES, ASSEMBLE IN THE TRENCH.) 5. FEED FOSSIL ROCK FILTER POUCH INTO PVC TRENCH DRAIN FILTER HOUSING. THIS CAN BE MADE EASIER WITH THE USE OF STRING OR FISH TAPE FED THROUGH THE FILTER HOUSING TO PULL THE FILTER POUCH THOUGH THE HOUSING. THERE WILL BE A FILTER POUCH FOR EACH LENGTH OF PIPE. REPEAT FOR EACH SECTION. 6. CONNECT THE CLIP ON FILTER POUCH TO THE END CAP. AT THE OTHER END, CONNECT THE COUPLER TO THE FILTER HOUSING AND CLIP THE POUCH TO THE NEXT POUCH (IF MULTIPLE). ONCE CLIPPED TOGETHER, JOIN THE TWO SECTIONS OF THE FILTER HOUSING. 7. JOIN FILTER HOUSING TO THE TRENCH DRAIN OUTLET ADAPTER. THE COUPLER AND END CAP ARE DESIGNED WITH A FLATTENED SIDE TO SIT ON THE TRENCH FLOOR. ENSURE THESE ARE ALIGNED TO LAY FLAT ON THE FLOOR AND USING RUBBER MALLET, SEAT EACH SECTION OF FILTER HOUSING INTO THEIR RESPECTIVE COUPLER/END CAP. 8. ONCE ALL SECTIONS ARE JOINED, LOCATE THE OPEN END OF THE FILTER BAG AND SLIDE OVER THE END CAP UNTIL THE FILTER BAG OPENING HAS REACHED THE TRENCH DRAIN OUTLET ADAPTER. 9. USING 2 TO 3 PEOPLE, CAREFULLY LOWER TRENCH DRAIN STYLE FLOGARD CATCH BASIN INSERT FILTER INTO THE TRENCH AND OVER THE OUTLET. 10. CAREFULLY REPLACE GRATES BACK OVER TRENCH. OldcastleStormwater.com (800) 579-8819 BUILDING STRUCTURES OUR MARKETS TRANSPORTATION WATER ENERGYCOMMUNICATIONS May 2018 v.1 FLOGARD® TRENCH DRAIN FILTERS 0 Oldcastle Precast® I • Stormwater ATTACHMENT 1FATTACHMENT C1 BMP TYPE ANNUAL COST 10-YEAR COST BIOFILTRATION BASINS 400.00$ 4,000.00$ TRASH CAPTURE DEVICES 400.00$ 4,000.00$ TOTAL 800.00$ 8,000.00$ COST ESTIMATE FOR MAINTENANCE OF BMP'S ATTACHMENT “C1” BMP TRAINING LOG DATE TYPE OF TRAINING PERSONNEL TRAINED TRAINER ATTACHMENT D1 ATTACHMENT “D1” INSPECTION AND MAINTENANCE LOG BMP TYPE AND LOCATION DATE DESCRIPTION OF BMP CONDITION/REPAIR REQUIRED DATE OF REPAIR/DESCRIPTION OF REPAIR/PERSONNEL COMPLETING REPAIR ATTACHMENT E1 ATTACHMENT 4 City standard Single Sheet BMP (SSBMP) Exhibit RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW 33" R C P 33" R C P MAP 8418CARLSBAD TRACT NO. 73-49LOT 17 Conc. 205 205 195 200 180 185 190 195 2 0 0 180 185 190 195 19 0 195 200 195 195 200 205 RW RW RW RW RW 18 " R C P 19 8 1 9 9 19 9 198 197 196 20 1 200 20 0 199 200 20 1 201 2 0 2 20 3 2 0 4 204 203 200 CA M I N O V I D A R O B L E PALO M A R A I R P O R T R O A D VAN ACCESSIBLE EV VAN ACCESSIBLE NO PARKING NO PARKING EV PARKING ONLY EV PARKING ONLY EV PA R K I N G ON L Y VA C U U M VA N AC C E S S I B L E NO PA R K I N G 10/09/2023 ~ 0 £ 00 0 .0 ~ "' N :g 0 " ~ 0 f/) " !l -0 a: / I / I , I / I , I I .... I •· .. ·. , ..... , . ·> ... • . , / • . ... / . _ .. _ ', ·" • • i .. . . .. · / ~, , / 1/ -- \ -· ' 1 / --/~/ / / / / I .............................. PARTY RESPONSIBLE FOR MAINTENANCE: NAME: ADDRESS: PALOMAR AIRPORT PARTNERSM LLC 3278 VISTA MATAMO, EL CAJON, CA 92019 PHONE NO.: 619-454-4488 CONTACT: SAMIR SALEM PLAN PREPARED BY: COMPANY: NAJARS ENGINEERING ADDRESS: 10769 WOODSIDE AVE, STE 204, SANTEE, CA 92071 PHONE NO.: 619-971-7514 :f / :f / :f I I I )_ :f / I I .✓/6 0 I /I_~ / '1 / I ·:, I I •. I I I ' . '/ /. I /2 / / 7 BMP NOTES: / I / / / 7 / / J I / r-· -, // ,-" , __ I , _,,, ) _./ ,_,- /"" 0 // // D // /2 / /7 / "/ /. / / / 7 / --<;// 7 / .r 7 / .• ' . 1. lHESE BMPS ARE MANDATORY TO BE INSTALLED PER MANUFACTURER'S RECOMMENDATIONS OR lHESE PLANS. 2. NO CHANGES TO lHE PROPOSED BMPS ON THIS SHEET WllHOUT PRIOR APPROVAL FROM lHE CITY ENGINEER. 3. NO SUBSTITUTIONS TO lHE MATERIAL OR TYPES OR PLANTING TYPES WllHOUT PRIOR APPROVAL FROM lHE CITY ENGINEER. 4. NO OCCUPANCY WILL BE GRANTED UNTIL lHE CITY INSPECTION STAFF HAS INSPECTED lHIS PROJECT FOR APPROPRIATE BMP CONSTRUCTION AND INSTALLATION. 5. REFER TO MAINTENANCE AGREEMENT DOCUMENT. 6. SEE PROJECT SWMP FOR ADDITIONAL INFORMATION. BMP CONSTRUCTION AND INSPECTION NOTES: • • □ lHE EOW WILL VERIFY lHAT PERMANENT BMPS ARE CONSTRUCTED AND OPERATING IN COMPLIANCE WITH lHE APPLICABLE REQUIREMENTS. PRIOR TO OCCUPANCY lHE EOW MUST PROVIDE: 1. PHOTOGRAPHS OF lHE 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 lHE REQUIREMENTS OF lHE APPROVED PLANS. 3. PHOTOGRAPHS TO VERIFY lHAT PERMANENT WATER QUALITY TREATMENT SIGNAGE HAS BEEN INSTALLED. PRIOR TO RELEASE OF SECURITIES, lHE DEVELOPER IS RESPONSIBLE FOR ENSURING lHE PERMANENT BMPS HAVE NOT BEEN REMOVED OR MODIFIED BY lHE NEW HOMEOWNER OR HOA WllHOUT lHE APPROVAL OF THE CITY ENGINEER. SITE DESIGN SC-A: OVERHEAD COVERING SC-C: WIND PROTECTION SC-D: SANITARY SEWER SC-F: STORM DRAIN SIGNAGE SOURCE CONTROL SD-B: DIRECT RUNOFF TO PERVIOUS AREAS SD-K: SUSTAINABLE LANDSCAPING ' --------::: ' \._ ~--- ', ""-4illlii .... ' __ : ~ /-·'. _/\, . .. I I . . . . . . >:, SD . . . . \~~~~~u.,...;....;...4~·'-:':-'· ••• ,,. ... '>l •. • I ~ • . ~ ··r,,.,,, . .,,.,,ffi,,.,,,..-1"\ •. ~'.:j=='=============='==ii ,_ BMP BMP TYPE SYMBOL ID # HYDROMODIFICATION & CD BIOFIL TRA TlON lmrrr•••••I••••I AREA ® BIOFIL TRA TlON 1 ············1 AREA ):i:;:i:i::i::::t::;:::::;:::::::;::: SOURCE CONTROL @ BMP SIGNAGE 9 0 STENCILS ~WP TRASH CAPTURE @ INLET FILTER • ® TRENCH FILTER . . .. •• >-. • .. ·,.. • ~• .· "' • I . ..,. BMP CASQA QUANTITY NO. TABLE DRAWING NO. TREATMENT CONTROL TC-32 758 SF. DWG 541-JA TC-32 956 SF. DWG 541-JA SD-13 3 EA. DWG 541-JA SD-13 2 EA. DWG 541-JA TC-50 3 EA. DWG 541-JA TC-50 1 EA. DWG 541-JA • < ----. ' ,,,-1 --~ ," '-< - ...__ ...__ . . -rn •. jsD-•. •. ". ;: .. ---~ ~·::..-.i~.:,;. ·----...;~:.:. __ i.:...:...:. . . . . . . . . . .... .. . •. ~-. •· ' ·.--~-~-·· ......,. • ·"'-' • ·I\. ' / -•• ....... ...__ ...__ ...__ ...__ . . . . . . . .. . . . . . . . . . . .. . .................. J\11 lllv!P signage shall be installed for each strnctural llMI' basin (I'-.;F-1, INF-2, l'R-1, and llF-1). Signage size shall be no smaller th an 18" by 12" (landscape orientacion), constructed of durable materials, permanen tly mounted and in a visible loca tion. PERMANENT WATER QUALITY TREATMENT FACILITY KEEPING OUR WATERWAYS CLEAN MAINTAIN WITH CARE -NO MODIFICATIONS WITHOUT AGENCY APPROVAL 8 BMP SIGNAGE SCALE: N.T.S. ----- ,..,_ -~. --..: ---..;_ . ' . :_. ----- - ---- :·CJCJ ~fl====:===:===:=f"l==s=c =-==A==!===================-==========1'.r=:.,=='=··==·==·=·•==; ==·~· ·:,;·!:~•~>~-~'±-:e.;.._,...,....,,·r , . _, /-:~ ~-~-' \';-: ~-'~. .. . . < ~:~~\~ ~--. ---r --lsc--cl --\-....J1,.;:.sc.;:;...=--....:;D....._I~_,,.!:::_,'..:·:::·,·;:·,.:_:. _ _,--,:i:._·:::; :7"""~~~~m •• ·" ~~ ="""" , •·--·.:>'C.... .. .,_· . ~~ ·> ..... SHEET INSPECTION MAINTENANCE NO.(S) FREQUENCY FREQUENCY 4,7 QUARTERLY SEMI-ANNUALL' 5,7 QUARTERLY SEMI-ANNUALL' 4,5 QUARTERLY AS NEEDED 4,5 QUARTERLY AS NEEDED 4,5,7 QUARTERLY QUARTERLY 4,5,7 QUARTERLY QUARTERLY - "DECLARATION OF RESPONSIBLE CHARGE" I HEREBY DECLARE THAT I AM THE ENGINEER OF WORK FOR THIS PROJECT, THAT I HA \IE" EXERCISED RESPONSIBLE CHARGE O\IE"R THE DESIGN OF THE PROJECT AS DERNED IN 5EC710N 6703 OF THE BUSINESS AND PROFESSIONS CODE, AND THAT THE DESIGN 15 CONSISTENT WITH CURRENT STANDARDS. BY THE 0 40' ------SCALE: 1 "= 20' I UNDERSTAND THAT THE CHECK OF PROJECT DRAWINGS AND 5PECIFICA710N5 CITY OF CARLSBAD DOES NOT RELIE\IE" ME, AS ENGINEER OF WORK, RESPONSIB/L/71E5 FOR PROJECT DESIGN. NAJAR$ ENGINEERING 10769 WOODSIDE A \IE", SUITE 204 SANTEE, CA 92071 OF MY ~~ESS~l ~ ?Q~ "AS BU I LT" 619-971-7514 No 78159 PR/JP~ DATE: _______ _ R.C.E. N0.:_~7,~8~15~9~------------ REGl57RA 710N EXP/RA 710N DA TE: _=09=/.~3=0~/2=0=2=5 ___ _ DA 1E INITIAL DA 1E INITIAL DA 1E INITIAL ENGINEER OF WORK REVISION DESCRIPTION OTHER APPROVAL OlY APPROVAL RCE___ EXP,----DATE REVIEWED BY: INSPECTOR DATE fsiiml ~ CITY OF CARLSBAD ENGINEERING DEPARTMENT GRADING PLANS FOR: PALOMAR AIRPORT RD CAR WASH GR 2023-0002 APPROVED: ENGINEERING MANAGER DWN BY: CHKD BY: __ _ RVWD BY: SINGLE SHEET BMP EXHIBIT JASON S. GELDERT RCE 63912 EXP. 9/30/24 DAlE PROJECT NO. CUP 91-03C DRAWING NO. 541-JA EXPLODED VIEW d f f L 0 iii 0 .0 t 0 e- <( ::, .,: N "' '° "' ,;; "' N $ ' a, BERM SOUTH OF BMP-A 198.08 TOP OF BERM 197.58 FG BMP-A WEST BASIN All BMP signage shall be installed for each structural B1'vlP basin (!Nl'-1 , 1::--Jl'-2, PR-1, and BF-1), Signage size shall be no smaller than 18" by 12'' (landscape orientation), constructed of durable materials, permanently mounted and in a visible location. GRATE PER DETAIL 1 STAINLESS STEEL SUPPORT BASKET-- FOSSIL ROCK POUCHES FILTER LINER & SUPPORT NETTING-- 30" NYLOPLAST DRAIN BASIN PER DETAIL 1 PERMANENT WATER QUALITY TREATMENT FACILITY KEEPING OUR WATERWAYS CLEAN MAINTAIN WITH CARE -NO MOD/FICA T/ONS WITHOUT AGENCY APPROVAL 8 BMP SIGNAGE SCALE: N.T.S. FloGard FILTER INSTALLED GRATE FRAME PER DETAIL 1 8 FLOGARD INLET FILTER (FGP-RF30F) SCALE: N.T.S. 200' SDG&E 20' SDG&E TREE TRANSMISSION EASEMENT TRIMMING EASEMENT 202.05TW T EX. 200.85FG 30" DRAIN BASIN FOR EMERGENCY OVERFLOW FITTED WITH FLOGARD CATCH BASIN INSERT FILTER PER DETAIL 3, SHEET 7 200.63TG r202.05TW WALL OPENING 201.88 TC SEE DETAIL THIS TW SHEET ( 201.38 FL 7.4" FREEBOARD I RIPRAP 12" PONDING 32" OPENING 6" 8" ; FL --------------~ TC 3' WIDE RIBBON GUTTER (IF APPLICABLE) FlLTER COURSE LAYER (6" THICK -WASHED PEA GRAVEL) •3" WELL-AGED SHREDDED HARDWOOD MULCH THAT HAS BEEN STOCKPILED OR STORED FOR ATLEAST 12 MONTHS ••SOIL MIX CONSISTS OF: 85-55% WASHED SAND 8-12% FINES (SILT & CLAY) 3-5% ORGANIC MATTER BIOFILTRATION BASIN SCALE: N.T.S. EARTH.~~~ REMOVABLE CAP FOR PERIODIC MAINTENANCE. CONCRETE TRENCH DRAIN. (SHOWN) PAVEMENT.~~ CONCRETE CURB. GASKET 6" PERF PIPE END CAP GLUED ON END CAP WITH DRILLED SECTION VIEW ORIFICE PER PLAN ORIFICE SIZE ORIFICE PER PLAN OUTLET. RUBBER GASKET MATERIAL. '-----OUTLET ADAPTOR & BYPASS WEIR. ORIFICE DETAIL SCALE: N.T.S. '----FILTER ELEMENT SHEATHED IN GEOTEXTILE SLEEVE. ,,-------'--FOSSIL ROCK ABSORBENT POUCHES. ! " ' RE\/. WALL OPENING DETAIL PAINT COLOR: WHITE STENCIL BY: PIPELINE PRODUCTS SAN MARCOS, CA PH: 1-800-998-1079 ··1N() l)U M IJI NG _,....A.-_ __ , -<, .., - I) l~J.\I NS TC) ()CEJ.\N 2L" I I APPRC\/ED DA.TE CITY OF CARLSBAD ~ . V 4/29/2022 CITY rnCli'lEER ).' TE STORM DRAIN STENCIL sur l'LE1V1EHT/1L DS-1 ST,\Nl)!•-RD NO. 8 STORM DRAIN STENCIL DETAIL SCALE: N.T.S. "AS BU I LT" RCE___ EXP. __ _ DATE REVIEWED BY: INSPECTOR DATE 8 FLOGARD CATCH BASIN INSERT FILTER-TRENCH DRAIN STYLE (FG-TDOF6) fsiiml CITY OF CARLSBAD I SHEETS I l__J ENGINEERING DEPARTMENT GRADING PLANS FOR: SCALE: N.T.S. PALOMAR AIRPORT RD CAR WASH 1-----+----+---------------+---+----1f----+----1 ;=GR:::::2==0=2=3-==0=0=02===8=M=P=ER=O=S/=O=N=C=ON=TR=O==t.=D=ET.=Al=LS=========: 1-----+----+---------------+---+----1f----+----1 APPROVED: JASON S. GELDERT ENGINEERING MANAGER RCE 63912 EXP. 9/30/24 DATE 1--:'"'"=-+.:-:::-:-:---+....._------------+---+----lf---+----1 OWN BY: __ DATE INITIAL DATE INITIAL DATE INITIAL CHKD BY: __ ENGINEER OF WORK REVISION DESCRIPTION OTHER APPROVAL alY APPROVAL RVWD BY: PROJECT NO. CUP 91-03C DRAWING NO. 541-3A