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SDP 2018-0004; ROMERIA POINTE APARTMENTS; PRIORITY DEVELOPMENT PROJECT (PDP) STORM WATER QUALITY MANAGEMENT PLAN (SWQMP); 2023-03-24
CITY OF CARLSBAD PRIORITY DEVELOPMENT PROJECT (PDP) STORM WATER QUALITY MANAGEMENT PLAN (SWQMP) FOR Romeria Pointe Apartments SDP 2018-0004/ GR 2021-0039/ DWG 534-1A PREPARED FOR: BNR INVESTMENT & DEVELOPMENT, LLC 23800 VIA DEL RIO YORBA LINDA, CA 92887 (714) 692-9120 PREPARED BY: Robin B. Hamers & Associates, Inc. 234 E. 17th Street, Suite 205 Costa Mesa, CA 92627 949 548-1192 DATE: March 24, 2023 ENGINEER OF WORK: 3/24/23 Michael Benesh, RCE 37893 Date Romeria Pointe Apartments SWQMP March 24, 2023 TABLE OF CONTENTS Certification Page Project Vicinity Map FORM E-34 Storm Water Standard Questionnaire Site Information FORM E-36 Standard Project Requirement Checklist Summary of PDP Structural BMPs Attachment 1: Backup for PDP Pollutant Control BMPs Attachment 1a: DMA Exhibit Attachment 1b: Tabular Summary of DMAs and Design Capture Volume Calculations Attachment 1c: Harvest and Use Feasibility Screening (when applicable) Attachment 1d: Categorization of Infiltration Feasibility Condition (when applicable) Attachment 1e: Pollutant Control BMP Design Worksheets / Calculations Attachment 2: Backup for PDP Hydromodification Control Measures Attachment 2a: Hydromodification Management Exhibit Attachment 2b: Management of Critical Coarse Sediment Yield Areas Attachment 2c: Geomorphic Assessment of Receiving Channels Attachment 2d: Flow Control Facility Design Attachment 3: Structural BMP Maintenance Thresholds and Actions Attachment 4: Single Sheet BMP (SSBMP) Exhibit Romeria Pointe Apartments SWQMP March 24, 2023 CERTIFICATION PAGE Project Name: Romeria Pointe Apartments Project ID: SDP 2018-0004 / GR 2021-0039 / DWG 534-1A 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. 3/24/23 Michael Benesh, RCE 37893 Date PROJECT VICINITY MAP VICIN IT Y CITY OF OCEANSIDE PA CIFIC OCEAN la MAP CITY OF ENCINITAS NOT TO SCALE CITY OF VISTA Site {city of Carlsbad STORM WATER STANDARDS QUESTIONNAIRE Development Services Land Development Engineering 1635 Faraday Avenue (760) 602-2750 www.carlsbadca.gov E-34 I 1N$TRUCTIONS: 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 or be subject to 'PRIORITY DEVELOPMENT PROJECT' (PDP) 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: Romeria Pointe Apartments PROJECT ID: SDP 2018-0004 ADDRESS: 7527 Romeria Street APN: 216-300-12 & 13 The project is (check one): Ill New Development D Redevelopment The total proposed disturbed area is: 26,050 ft2 ( 0.598 ) acres The total proposed newly created and/or replaced impervious area is: 22,054 ft2 ( 0.506 ) 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. E-34 Page 1 of 4 REV 02/16 : STEP1 [' ... ' TO BE COMPLETED FOR ALL PROJECTS ',< To determine if your project is a "development project", please answer the following question: YES NO Is your project LIMITED TO routine maintenance activity and/or repair/improvements to an existing building □ Ill 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 5, mark the third box stating "my project is not a 'development project' and not subject to the requirements of the BMP manual" and complete applicant information. Justification/discussion: (e.g. the project includes only interior remodels within an existing building): If you answered "no" to the above Question, the project is a 'development project', go to Step 2. ,, STEP2 TO BE COMPLETED FOR ALL DEVELOPMENT PROJECTS To determine if your project is exempt from PDP requirements pursuant to MS4 Permit Provision E.3.b.(3), please answer the following questions: Is your project LIMITED to one or more of the following: YES NO 1. Constructing new or retrofitting paved sidewalks, bicycle lanes or trails that meet the following criteria: a) Designed and constructed to direct storm water runoff to adjacent vegetated areas, or other non- erodible permeable areas; □ Ill b) Designed and constructed to be hydraulically disconnected from paved streets or roads; 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 □ Ill 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? □ llJ If you answered "yes" to one or more of the above questions, provide discussion/justification below, then go to Step 5, 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, ao to Step 3. E-34 Page 2 of 4 REV 02/16 .... J,'11;"'" "~ .. ,'I "" STEP3 I= ,, .. , -ill H ~,le~ \ii' . ·.;~,. t0,,J3E OOMPt{:TEO FpR ALL NEW 9R flEDEVELOPME~! PROJEC]'! . _,-~ ~ .}~ 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, Ill □ 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 □ IZl 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 □ Ill 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 Ill □ 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 Ill □ 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 surface collectively over the entire project site and supports a street, road, highway Ill □ freeway or driveway? 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 □ Ill 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 comminaled 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 □ Ill 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 □ Ill 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. 1 o. Is your project a new or redevelopment project that results in the disturbance of one or more acres of land □ Ill 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%? (CMG □ Ill 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, check the first box stating "My project is a PDP ... " and complete applicant information. If you answered "no" to all of the above questions, your project is a 'STANDARD PROJECT.' Go to step 5, check the second box statinr,i "My project is a 'STANDARD PROJECT' ... " and complete aoolicant information. E-34 Page 3 of 4 REV 02/16 STEP4 t TO BE COMPLETED FOR REDEVELOPMENT PROJECTS THAT ARE PRIORITY DEVELOPMENT PROJECTS (POP). ;iJ 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 uyes", 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, check the first box stating "My project is a PDP ... " and complete applicant information. If you answered "no," the structural BMP's required for PDP apply to the entire development. Go to step 5, check the check the first box stating "My project is a PDP ... " and complete applicant information. STEPS CHECK THE APPROPRIATE BOX AND COMPLETE APPLICANT INFORMATION Ill 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) for submittal at time of application. 0 My project is a 'STANDARD PROJECT' OR EXEMPT from PDP and must only comply with 'STANDARD PROJECT' stormwater requirements of the BMP Manual. As part of these requirements, I will submit a • Standard Project Requirement Checklist Form E-36' and incorporate low impact development strategies throughout my project. Note: For projects that are close to meeting the PDP threshold, staff may require detailed impervious area calculations and exhibits to verify if 'STANDARD PROJECT stormwater requirements apply. D My Project is NOT a 'development project' and is not subject to the requirements of the BMP Manual. Applicant Information and Signature Box Streamline Development Group Applicant Name: John Alle1/ / Applicant Title: Owner Agent/Developer Applicant Signature: /4 li .. Date: l _/151:JJ- /' V • Environmentally Sensitive Ari/as 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. This Box for City Use Only YES NO City Concurrence: □ □ By: Date: Project ID: E-34 Page 4 of 4 REV 02/16 Romeria Pointe SWQMP March 24, 2023 SITE INFORMATION CHECKLIST Project Summary Information Project Name Romeria Pointe Apartments Project ID SDP 2018-0004 Project Address 7527 Romeria Street Carlsbad, CA Assessor's Parcel Number(s) (APN(s)) 216-300-12 & 13 Project Watershed (Hydrologic Unit) San Marcos Creek 904.51 Parcel Area 0.712 Acres (31,010 Square Feet) Existing Impervious Area (subset of Parcel Area) 0.000 Acres (0 Square Feet) Area to be disturbed by the project (Project Area) 0.598 Acres (26,050 Square Feet) Project Proposed Impervious Area (subset of Project Area) 0.506 Acres (22,054 Square Feet) Project Proposed Pervious Area (subset of Project Area) 0.092 Acres (3,996 Square Feet) Note: Proposed Impervious Area + Proposed Pervious Area = Area to be Disturbed by the Project. This may be less than the Parcel Area. Romeria Pointe SWQMP March 24, 2023 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: The site is vacant and has been previously graded with two building pads and 2:1 slopes. Existing Land Cover Includes (select all that apply): ✓ Vegetative Cover __Non-Vegetated Pervious Areas __ Impervious Areas Description / Additional Information: The site is currently covered by sparse native vegetation. 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 (Per GSI Geotechnical report ground water elevation is at or near sea level.) Existing Natural Hydrologic Features (select all that apply): __ Watercourses __ Seeps __ Springs __ Wetlands ✓ None Description / Additional Information: Romeria Pointe SWQMP March 24, 2023 Description of Existing Site Topography and Drainage [How is storm water runoff conveyed from the site? At a minimum, this description should answer (1) whether existing drainage conveyance is natural or urban; (2) describe existing constructed storm water conveyance systems, if applicable; and (3) is runoff from offsite conveyed through the site? if so, describe]: The project has previously been graded and consists of two building pads and manufactured 2:1 slopes. The existing drainage conveyance away from the site is not a natural drainage channel but constructed urban channels, streets, and pipes. Most of the runoff from the site drains overland to Romeria Street to the east and Gibraltar Street to the north. The runoff in the streets are picked up in a catch basin on Gibraltar Street just west of the project site. From there it is conveyed to San Marcos Creek by means of a city storm drain system, and a concrete lined watercourse through the golf course north of the project site. A portion of the westerly facing slope drains to the property to the west of the project, which in turn drains out to Gibraltar Street and San Marcos Creek. There is a small portion of the westerly facing slope that drains to an existing on-site terrace drain. The terrace drain slopes to the south and ends at an existing drain inlet on the property to the west of the site. The inlet is upstream on the same storm drain pipe as the catch basin on Gibraltar Street just west of the project. There does not appear to be any runoff entering the project site from the adjoining properties. There are streets on the north and east sides of the site. The property to the west is much lower than the site. The property to the south is higher than the project site, but there is a berm at the top of the slope that would prevent stormwater run-on. Romeria Pointe SWQMP March 24, 2023 Description of Proposed Site Development and Drainage Patterns Project Description / Proposed Land Use and/or Activities: The proposed project includes the construction of a 16 unit apartment complex in 2 buildings. The project parking will be inside the covered parking structure at the lowest level of each building. The construction will include driveways, buildings and the extension of utilities from Romeria Street and Gibraltar Street into the site. The proposed activities will be typical attached residential living. List/describe proposed impervious features of the project (e.g., buildings, roadways, parking lots, courtyards, athletic courts, other impervious features): The impervious features of the project will include the residential buildings, as well as the short driveways to access the parking structures, walkways and patios. All parking will be covered. List/describe proposed pervious features of the project (e.g., landscape areas): The portions of the site that will be disturbed by grading will be landscaped and irrigated using native and drought tolerant vegetation. On the portions of the site that will remain undisturbed, the current native vegetation will remain. Does the project include grading and changes to site topography? ✓ Yes __ No Description / Additional Information: There will be significant grading to create the pads for the proposed buildings. Estimated earthwork is around 5,000 c.y. for raw cut and fill. There will be limited remedial over-excavation and recompaction of the existing soils as the intent is to use piles to support the proposed buildings. Does the project include changes to site drainage (e.g., installation of new storm water conveyance systems)? ✓ Yes __ No Description / Additional Information: The project will construct an on-site storm drain system to convey the runoff from the site to the streets. The proposed storm drain system will collect runoff from the developed portions of the site and direct it to the stormwater treatment BMPs prior to draining to the public streets. Once off-site, the drainage pattern will remain as it is today. Romeria Pointe SWQMP March 24, 2023 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 Romeria Pointe SWQMP March 24, 2023 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): The stormwater runoff leaving the project will flow down Gibraltar Street to an existing storm drain inlet just west of the project site. The inlet is part of a City storm drain system and outlets to a concrete lined drainage channel on the golf course approximately 330 feet north of the project. The channel flows about 350 feet to San Marcos Creek. San Marcos Creek flows west to Batiquitos Lagoon, about 1.5 miles west of the project, which in turn drains to the Pacific Ocean. 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 San Marcos Creek DDE, phosphorous, selenium TDML scheduled completion by 2019-2021 Identification of Project Site Pollutants Identify pollutants anticipated from the project site based on all proposed use(s) of the site (see BMP Design Manual Appendix B.6): Pollutant Not Applicable to the Project Site Anticipated from the Project Site Also a Receiving Water Pollutant of Concern Sediment ✓ ✓ Nutrients ✓ ✓(phosphorous) Heavy Metals ✓ Organic Compounds ✓ Trash & Debris ✓ Oxygen Demanding Substances ✓ Potential due to landscaping Oil & Grease ✓No uncovered parking Bacteria & Viruses ✓ Potential Pesticides ✓ ✓ Romeria Pointe SWQMP March 24, 2023 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: The project will include four Flexstorm Pure Catch Basin Inserts, one in each of the biofiltration BMP overflow drains. Per the manufacturer, the inserts have a volume capacity of 3 c.f. and a flow capacity of 2.8 cfs. Per the drainage study for the project, BMP-3 has the largest 100-year storm inflow of all the BMPs at 2.2 cfs which is much less than the flow capacity of the inserts. Also per the manufacturer the FTC inserts will capture all particles greater than 4.8 mm. 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 embayment, 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 embayment, 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): Romeria Pointe SWQMP March 24, 2023 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 Section 6.2 of the BMP Design Manual been performed? __ 6.2.1 Verification of Geomorphic Landscape Units (GLUs) Onsite __ 6.2.2 Downstream Systems Sensitivity to Coarse Sediment __ 6.2.3 Optional Additional Analysis of Potential Critical Coarse Sediment Yield Areas Onsite __ 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 LI 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 6.2.4 and 6.2.5 as applicable, and the areas are identified on the SWQMP Exhibit. Discussion / Additional Information: There are no Critical Coarse Sediment Yield Areas mapped on the site. The site has been previously graded, and the site soils are predominantly sandy clays. Romeria Pointe SWQMP March 24, 2023 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. There is one POC on the project site, it drains to San Marcos Creek. POC 1 is near the NW corner of the project on Gibraltar Street where the runoff from the project enters the City storm drain system. 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) Romeria Pointe SWQMP March 24, 2023 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. The site is uphill from a steep slope and infiltration is not recommended by the soils engineer due to potential for detrimental impacts downhill of the project. See GeoSoils Inc Geotechnical Update Evaluation dated November 21, 2017. The report includes the following recommendation: “On a preliminary basis, the feasibility of storm water infiltration at the subject site is considered very low, owing to the fine-grained nature of the onsite earth materials and the occurrence of relatively dense formational materials underlying the existing fills, and extending to depth. If storm water were to infiltrate, it would most likely perch upon till lifts or the Santiago Formation and migrate laterally, This may have detrimental effects (i.e., distress) on onsite and offsite improvements, including public and private underground utility trenches, and slope stability, The potential for onsite storm water infiltration to induce offsite damage is considered moderate for the site.” 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. 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 Romeria Pointe Apartments SDP 2018-0004 GR 2021-0039/ DWG 534-1A X X X X X X X □ □ □ □ □ □ □ □ □ 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 The site has been previously graded and there are no natural water bodies or drainage channels on the site. Nearly all site drainage is directed to bio-filtration planters on-site. All on-site parking is in a covered garage. 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 □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ □ 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: 1/3/23 Michael Benesh -----=, ~ ~ I ....... - Romeria Pointe SWQMP March 24, 2023 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). Both storm water pollutant control and flow control for hydromodification management can 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, indicate whether pollutant control and flow control BMPs are integrated together or separate. Step 1. Determine DCV per Appendix B.1 The site is located in NRCS Soil Type D. The 85th percentile storm depth of 0.6 inches was determined from Figure B.1-1: 85th Percentile 24-hour Isopluvial Map. The areas of impervious surfaces and landscaping were used to calculate the DCV for each of the areas tributary to the BMPs. See the DMA Map in Attachment 1a. The calculations for the DCV are included in the “County of San Diego Automated Stormwater Pollutant Control Worksheet B.1” included in Attachment 1e. Step 2. Determine Retention Requirements Appendix B.2 Capture and Use was not required because the buildings are not over 9 stories tall. The site is not suitable for infiltration BMPs due to the Type D soils, steep terrain and the potential for causing detrimental effects on structures and improvements downhill from the project site. An infiltration test was not performed. The calculations for the Retention Requirements are included in the “County of San Diego Automated Stormwater Pollutant Control Worksheet B.2” included in Attachment 1e. Step 3. Determine BMP Performance per Appendix B. Because both Capture & Use and Infiltration BMPs were not feasible, the runoff will be treated using Biofiltration BMPs. The BMPs will be vegetated. The BMPs will be lined per the requirement of the soils engineer to prevent detrimental effects on the structures and improvements downhill of the site. The BMPs will have 3” of mulch, over 18” of standard soil media, over a 6” filter course of pea gravel, over a storage layer of 1” gravel. The overflow inlet for the BMPs will be elevated above the surface of the mulch to allow for ponding of the runoff. The under drain inside the gravel layer will have a restricted orifice owning to limit the runoff rate from the BMP. The BMP area, gravel depth, ponding depth, and orifice diameter will be sized to meet the hydromodification requirements for the project. The BMP performance evaluation is included in the “County of San Diego Automated Stormwater Pollutant Control Worksheet B.3” included in Attachment 1e. [Continue on next page as necessary.] Romeria Pointe SWQMP March 24, 2023 Structural BMP Summary Information [Copy this page as needed to provide information for each individual proposed structural BMP] Structural BMP ID No. BMP-1 DWG 534-1A Sheet Nos. 4 & 5 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) __ Partial retention by biofiltration with partial retention (PR-1) _✓ Biofiltration (BF-1) __ 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 __ 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 _✓ Other (describe in discussion section below) Discussion (as needed): Biofiltration BMP on s’ly side of Building A will be used for both treatment control and flow control. BMP treats roof runoff from the southerly half of Building A. Biofiltration BMP also acts as a Trash Capture BMP with included insert in overflow drain. Romeria Pointe SWQMP March 24, 2023 Structural BMP Summary Information [Copy this page as needed to provide information for each individual proposed structural BMP] Structural BMP ID No. BMP-2 DWG 534-1A Sheet Nos. 4 & 5 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) __ Partial retention by biofiltration with partial retention (PR-1) _✓ Biofiltration (BF-1) __ 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 __ 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 _✓ Other (describe in discussion section below) Discussion (as needed): Biofiltration BMP on n’ly side of Building A will be used for both treatment control and flow control. BMP treats roof runoff from the northeast quarter of Building A. Biofiltration BMP also acts as a Trash Capture BMP with included insert in overflow drain. Romeria Pointe SWQMP March 24, 2023 Structural BMP Summary Information [Copy this page as needed to provide information for each individual proposed structural BMP] Structural BMP ID No. BMP-3 DWG 534-1A Sheet Nos. 4 & 5 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) __ Partial retention by biofiltration with partial retention (PR-1) _✓ Biofiltration (BF-1) __ 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 __ 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 _✓ Other (describe in discussion section below) Discussion (as needed): Biofiltration BMP on n’ly side of Building B will be used for both treatment control and flow control. BMP treats roof runoff from Building B, driveway runoff from Building A, as well as runoff from the landscaping, patios and walkways between the buildings. Biofiltration BMP also acts as a Trash Capture BMP with included insert in overflow drain. Romeria Pointe SWQMP March 24, 2023 Structural BMP Summary Information [Copy this page as needed to provide information for each individual proposed structural BMP] Structural BMP ID No. BMP-4 DWG 534-1A Sheet Nos. 4 & 5 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) __ Partial retention by biofiltration with partial retention (PR-1) _✓ Biofiltration (BF-1) __ 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 __ 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 _✓ Other (describe in discussion section below) Discussion (as needed): Biofiltration BMP e’ly of Building B will be used for both treatment control and flow control. This BMP treats the runoff from the driveway to Building B. Biofiltration BMP also acts as a Trash Capture BMP with included insert in overflow drain. Romeria Pointe SWQMP March 24, 2023 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 I-7, Harvest and Use Feasibility Screening Checklist (Required unless the entire project will use infiltration BMPs) Refer to Appendix B.3-1 of the BMP Design Manual to complete Form I-7. _✓ Included __ Not included because the entire project will use infiltration BMPs Attachment 1d Form I-8, Categorization of Infiltration Feasibility Condition (Required unless the project will use harvest and use BMPs) Refer to Appendices C and D of the BMP Design Manual to complete Form I-8. _✓ 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 and E of the BMP Design Manual for structural pollutant control BMP design guidelines _✓ Included S S 30 ' 18 . 3 ' 18 . 5 ' EX. 8" SEWER MAIN (LEUCADIA) EX. SEW E R M A N H O L E E X . 8 " L W D S E W E R P E R D W G 1 6 9 - 4 E X . 8 " W A T E R P E R D W G 1 6 9 - 4 E X . C U R B , G U T T E R & S I D E W A L K P E R D W G 6 9 - 4 30'20' 10' 30' 20' 3 0 ' 2 0 ' 6' 86.43 TG 80.96 TG 6 1 6 2 62 636465 6667 6365 64 Ex 1.5" S E R V I C E W / 1 " M E T E R (IRRIG . ) EX. CU R B , G U T T E R & SIDE W A L K EX . T R A N S F O R M E R EX . U T I L . B O X E S 81.0 TG84.0 TG 84.0 TG 81.0 TG 81.0 TG 81.15 TG 75.3 TG 81.1 5 TG 75 . 4 4 T G 7 0 . 9 6 T G 67.1 5 TG 7 8 . 5 TG 7 8 . 0 0 T G E X . C U R B , G U T T E R & S I D E W A L K E X . S T . L T . 5 'M I N 6 6 65 6 4 63 6 2 61 60 59 5 8 57 E X . 2 4 " S D P E R D W G 1 6 9 - 4 EX. 8" W A T E R P E R D W G 1 6 9 - 4 EX. 8" L W D S E W E R P E R D W G 1 6 9 - 4 7 5 72 81.10 TG 81. 2 0 TG CL C L EX. 12" A . C . W A T E R PER DW G 9 2 4 - 7 SD SD SD SD SD SD SD SD SD SD SD SD SD SD SD S D S D BMP-4 O U T L E T 64.60 T . G . 60.43 IN V SD S D SD SD SD SD SD SD SD S D S D BMP-1 O U T L E T 96.17 T . G . 89.67 I N V SD BMP-2 O U T L E T 85.83 T . G . 79.33 IN V SD SD SD SD SD SD SD SD SD SD SD SD SD BMP 3 O U T L E T 66.43 T . G . 59.93 I N V DOWNS P O U T P E R ARCH. P L A N S DOWNS P O U T P E R A R C H . P L A N S DOWNS P O U T P E R A R C H . P L A N S DOWN S P O U T P E R ARCH. P L A N S DOWN S P O U T P E R ARCH. P L A N S DOWN S P O U T P E R ARCH. P L A N S DOWN S P O U T P E R ARCH. P L A N S DOWNS P O U T P E R ARCH. P L A N S DOWNS P O U T P E R ARCH. P L A N S DOWNS P O U T P E R ARCH. P L A N S N9 0 ° 0 0 ' 0 0 " W 1 4 5 . 0 ' N00° 00' 00"E 90.0' N34° 4 5 ' 2 3 " W 6 6 . 0 ' D = 1 2 ° 3 6 ' 3 4 ", L = 1 3 4.2 ', R = 6 1 0. 0 0 ' D=97°19'27", L=34.0', R = 2 0 . 0 0 ' D =4 0 °0 2'28 ",L =1 5 3 .7 ',R =2 2 0 .0 0 ' N00° 00' 00"E 90.0' 60 66 78 . 0 0 TG 8 7 . 0 0 T G SD SD SDSD 90 . 5 8 TG SD SD SD SD SD SD EX. SEW E R M A N H O L E EX. SE W E R M A N H O L E POC #1 DMA-14 449 SF (0 SF IMP) 0.0% IMP DMA-18 60 SF (60 SF IMP) 100.0% IMP DMA-16 15908 SF (14123 SF IMP) 88.8% IMP BMP-4 Area =33 SF BMP-2 Area =250 SF BMP-1 Area =325 SF BMP-3 Area =728 SF DMA-10 5456 SF (5023 SF IMP) 92.1% IMP DMA-11 2369 SF (2336 SF IMP) 98.6% IMP DMA-17 1440 SF (83 SF IMP) 5.8% IMP DMA-15 3336 SF (86 SF IMP) 2.6% IMP DMA-12 484 SF (343 SF IMP) 70.8% IMP DMA-19 126 SF (0 SF IMP) 0.0% IMP DMA-20 46 SF (0 SF IMP) 0.0% IMP DMA Table Name 10 11 12 14 15 16 17 18 19 20 Total Area (SF) 5456 2369 484 449 3336 15908 1440 60 126 46 Imp. Area (SF) 5023 2336 343 0 86 14123 83 60 0 0 % Imp. 92.1% 98.6% 70.8% 0.0% 2.6% 88.8% 5.8% 100.0% 0.0% 0.0% Type Drains to BMP-1 Drains to BMP-2 Drains to BMP-4 Self-Mitigating Self Mitigating Drains to BMP-3 Self-Mitigating Drains to BMP-3 Self Mitigating Self Mitigating Treatment/HMP BMP Table Name BMP-1 BMP-2 BMP-3 BMP-4 Area (SF) 325 250 728 33 Type Biofiltration Biofiltration Biofiltration Biofiltration SD SD Notes: ·Underlying Hydrologic Soils Group for the entire project is Soils Group D. ·Runoff Factor per Table B-1.1 = 0.30 ·Approximate depth to ground water is >20'. ·There are no wells, springs or watercourses on the developed project site. ·There are no critical coarse sediment yield areas on the project site, or draining onto the project site. ·There are no existing impervious areas on the site. Attachment 1b & 2a Priority Development Project Romeria Pointe SWQMP (Storm Water Quality Management Plan) DMA & Hydromodification Exhibit SHEET 1 OF 2 Legend: Impervious Surface (Parking, building, sidewalk) Storm Drain Drain Inlet Biofilter Planter DMA Name DMA Area DMA Impervios Cover DMA % Impervious Drainage Area Boundary Scale: 1"=10' Feet 20 10 0 29,675 sf 22,054 sf DMA-0 100 SF (10 SF IMP) 10.0% IMP SDP2018-0004 SDP2018-0004 Drainage Management Areas designated as Self-Mitigating must meet the following requirements: ·Vegetation in the natural or landscaped area is native and/or non-native/non-invasive drought tolerant species that do not require regular application of fertilizers and pesticides. ·Soils are undisturbed native topsoil, or disturbed soils that have been amended and aerated to promote water retention characteristics equivalent to undisturbed native topsoil. ·The incidental impervious areas are less than 5 percent of the self-mitigating area. ·Impervious areas within the self-mitigated area should not be hydraulically connected to other impervious areas unless it is a storm water conveyance system (such as brow ditches). ·The self-mitigating area is hydraulically separate from DMAs that contain permanent storm water pollution control BMPs. PREPARED BY: ROBIN B. HAMERS & ASSOC., INC. CIVIL ENGINEERS 234 E. 17TH STREET, SUITE 205 COSTA MESA, CA 92627 (949) 548-1192 MICHAEL BENESH, R.C.E. 37893 DATE HBR 6/23/23 LIVIC RE EN I G N E LANOISSEFORPDERETSIGER = = = ~ = i • ·1 t L Ul f- z "' ~ f- "' <( "- ... f- Ul ... X ;, L :.r1 ;-i/ ;,.; ,:r l_l_, Ci_ <,( "' . -- ' = 1/ I I' 1 ' '/ I I I I I :1 ,1 , I I I I I \\/------ = = = -- 7 I l - ' ,_ - b '). i J/-------- i EXISTING APARTMENTS = ·--- '• E>< Sl l'·JC; 2.-·ST CP'"/AF;._?-1·/IC:::NT ;::'. IILV )·<::, I'-L - -_l· , __ =-= __ , -~-----¼ "'-' = _-4 _J ----J,- c:::J -----1 ►-,. p c:::J Romer • IQ [) r , __ --- - -' --' ' \ - -' / --',/. • I V e / ~ .. -✓ ,-~ I I J" I I I I I I I I ,, ' I i\ ' I '\' \ I' ' ' ' ,' ' I i l l __.:..,__ __ '{/ ----------'{/ ----------)',/--------)',/------- ___Jy_ ),\' /. p \ I ,, I > > '· \ '. ', ' ' - :.c.----::: -~·· _1----- 1 L--- \ ·-11 \I / . •.- ({ .'~r:•J '\,,,~:;7tz~:), ':,j;;_'_/ ~- ~~ ' '\, ' l If II I I I ~->--. . A. ·, . '• ' '{; ' -,_ ~-~/ .A ~-' ~. s ~-- ·Jl: (i'.: ) "' " '0 -~ -,,· ? i-) i IS 1·11 !Ci I I 'I ,, U/, :-.--~; -0=<•1 ,AJ--:,i'-f<.I ·/I-I\ - tlJIL'i I G 0 / ~· ~--~- ~ 'f I c_' 4._ I'• -V l ------------ Attachment 1b & 2a Priority Development Project Romeria Pointe SWQMP (Storm Water Quality Management Plan) DMA & Hydromodification Exhibit SHEET 2 OF 2 SDP2018-0004 PREPARED BY: ROBIN B. HAMERS & ASSOC., INC. CIVIL ENGINEERS 234 E. 17TH STREET, SUITE 205 COSTA MESA, CA 92627 (949) 548-1192 MICHAEL BENESH, R.C.E. 37893 DATE HBR 6/23/23 LIVIC RE EN I G N E LANOISSEFORPDERETSIGER OR I G I N A L S C A L E : Amended Soils Composition BSM Composition Sand Sandy Loam Compost Sand Silt Clay Volume 60%25%15% Weight 75-80%10% max. 3% max 9% max 1 1 9% compost by weight results in approximately 5% organic matter by weight. BMP-1: Biofiltration Planter Detail Area = 325 s.f. Storage Volume (below grate) = 990 c.f. 5' 65' 1- AMENDED SOILS MIN. INF. RATE = 5"/HR. MAX. INF. RATE = 10"/HR SEE AMENDED SOILS COMPOSITION TABLE BELOW 6" M i n . 10 " P o n d i n g D e p t h PVC OUTLET PIPE 5' 18 " S O I L M E D I A 6" W A S H E D P E A GR A V E L ( F I L T E R CO U R S E ) 3" H A R D W O O D MU L C H 0.25" ORIFICE OPENING DRILLED THROUGH PIPE END CAP AT INVERT ELEVATION 16 " M i n . PLANTER WALL 96.50 TOP WALL 95.3 F.G. 96.17 TOP GRATE BUILDING A WALL SEE ARCHITECTURAL AND STRUCTURAL PLANS 24" DIA. RISER W/GRATE & ADS FLEXSTORM PURE FTC FULL TRASH CAPTURE INSERT (62MHDR-FTC) 86.5 FS GARAGE 89.59 BOTTOM 42 " C L A S S 2 P E R M E A B L E MA T E R I A L S C A L T R A N S SP E C I F I C A T I O N 6 8 - 1 . 0 2 5 (S T O R A G E L A Y E R ) 6" PERFORATED PVC (SDR-35) PIPE 3" ABOVE BOTTOM OF BASIN 3' ± 6" PERFORATED PVC PIPE INLET 89.84 INV PVC PIPE OUTLET 89.67 INV PIPE END CAP PLANTER WALL Plan View NOT TO SCALE Section 1 NOT TO SCALE BUILDING A WALL EXISTING GRADE BMP-2: Biofiltration Planter Detail Area = 250 s.f. Storage Volume (below grate) = 761 c.f. 5' 50' 2- AMENDED SOILS MIN. INF. RATE = 5"/HR. MAX. INF. RATE = 10"/HR SEE AMENDED SOILS COMPOSITION TABLE BELOW 6" M i n . 10 " P o n d i n g D e p t h PVC OUTLET PIPE 5' 18 " S O I L M E D I A 6" W A S H E D P E A GR A V E L ( F I L T E R CO U R S E ) 3" H A R D W O O D MU L C H 0.25" ORIFICE OPENING DRILLED THROUGH PIPE END CAP AT INVERT ELEVATION 16 " M i n . PLANTER WALL 86.33 TOP WALL 85.0 F.G. 85.83 TOP GRATE BUILDING A WALL SEE ARCHITECTURAL AND STRUCTURAL PLANS 24" DIA. RISER W/GRATE & ADS FLEXSTORM PURE FTC FULL TRASH CAPTURE INSERT (62MHDR-FTC) 86.5 FS GARAGE 79.25 BOTTOM 42 " C L A S S 2 P E R M E A B L E MA T E R I A L S C A L T R A N S SP E C I F I C A T I O N 6 8 - 1 . 0 2 5 (S T O R A G E L A Y E R ) 6" PERFORATED PVC (SDR-35) PIPE 3" ABOVE BOTTOM OF BASIN 3' ± 6" PERFORATED PVC PIPE INLET 79.50 INV PVC PIPE OUTLET 79.33 INV PIPE END CAP PLANTER WALL Plan View NOT TO SCALE Section 2 NOT TO SCALE BUILDING A WALL FINISHED GRADE FG VARIES 80.0 TO 82.2. BMP-3: Biofiltration Planter Detail Area = 728 s.f. Storage Volume (below grate) = 2,217 c.f. 6. 5 ' 112' 3- AMENDED SOILS MIN. INF. RATE = 5"/HR. MAX. INF. RATE = 10"/HR SEE AMENDED SOILS COMPOSITION TABLE BELOW 6" M i n . 10 " P o n d i n g D e p t h PVC OUTLET PIPE 6.5' 18 " S O I L M E D I A 6" W A S H E D P E A GR A V E L ( F I L T E R CO U R S E ) 3" H A R D W O O D MU L C H 0.4" ORIFICE OPENING DRILLED THROUGH PIPE END CAP AT INVERT ELEVATION 16 " M i n . PLANTER WALL 67.13 TOP WALL 65.8 F.G. 66.63 TOP GRATE 24" DIA. RISER W/GRATE & ADS FLEXSTORM PURE FTC FULL TRASH CAPTURE INSERT (62MHDR-FTC) 60.05 BOTTOM 42 " C L A S S 2 P E R M E A B L E MA T E R I A L S C A L T R A N S SP E C I F I C A T I O N 6 8 - 1 . 0 2 5 (S T O R A G E L A Y E R ) 6" PERFORATED PVC (SDR-35) PIPE 3" ABOVE BOTTOM OF BASIN 3' ± 6" PERFORATED PVC PIPE INLET 60.30 INV PVC PIPE OUTLET 60.13 INV PIPE END CAP PLANTER WALL Plan View NOT TO SCALE Section 3 NOT TO SCALE BUILDING B WALL 4.5' 2.25' BUILDING B WALL 67.4 FS GARAGE FINISHED GRADE FG VARIES 66.0 TO 67.0 4' 8.25' 8.25' BMP-4: Biofiltration Planter Detail Area = 33 s.f. Storage Volume (below grate) = 63 c.f. Plan View NOT TO SCALE CONC. CHANNEL 65.00 FS 65.00 TW 65.60 TW 65.00 FS 65.60 TC 65.50 TW FLOW 66.00 TW 65.60 TW PVC OUTLET PIPE 0.25" ORIFICE OPENING DRILLED THROUGH PIPE END CAP AT INVERT ELEVATION 6" PERFORATED PVC (SDR-35) PIPE 3" ABOVE BOTTOM OF BASIN 1' ± 24" DIA. RISER W/GRATE & ADS FLEXSTORM PURE FTC FULL TRASH CAPTURE INSERT (62MHDR-FTC) PIPE END CAP PLANTER WALL PROPERTY LINE 4- AMENDED SOILS MIN. INF. RATE = 5"/HR. MAX. INF. RATE = 10"/HR SEE AMENDED SOILS COMPOSITION TABLE BELOW 6" M i n . 6" P o n d i n g De p t h 4' 18 " S O I L ME D I A 6" W A S H E D P E A G R A V E L (F I L T E R C O U R S E ) 3" H A R D W O O D MU L C H PLANTER WALL 65.5 TOP WALL 64.1 F.G. 64.60 TOP GRATE 24" DIA. RISER W/GRATE & ADS PURE INLET FILTER(6224NYFTC) 60.35 BOTTOM 18 " C L A S S 2 P E R M E A B L E MA T E R I A L S C A L T R A N S SP E C I F I C A T I O N 6 8 - 1 . 0 2 5 (S T O R A G E L A Y E R ) 6" PERFORATED PVC PIPE INLET 60.60 INV PVC PIPE OUTLET 60.43 INV Section 4 NOT TO SCALE FINISHED GRADE FG VARIES 66.0 TO 67.3 FINISHED GRADE 66.0 TOP WALL 65.00 TOP WALL 65.50 TW 96.67 TOP WALL 3" 4" ORIFICE 3' M I N . 66.00 TW 2' 6" 0.5" ORIFICE 24" DIA. RISER W/GRATE & ADS PURE INLET FILTER(6224NYFTC) 24" DIA. 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VALUES) Nominal Bag SoUds Storage Flow Rate [CFs1· Oil Retention 1011° Si~e /Cuftl :FX/FXP PCP FXP PCP SmaU LG L2 0.8 89 168 Medium 2.1 1.7 1.2 89 204 Lari;e 3.8 2.7 L8 89 262 Extra larEe 4.2 3.6 2,4 278 3lS 11.ar&e s""le :3«I partv le5ting Pef ASTM TSS Remo.val Rate 82% N/A 0 7351 u1ir,g 7~ ooni:.eotration llSOA 5.100¥ 1.1:!arn l.arijeScal~te.tin~at 90 GPM u!i.,ij US TSS Removal Rate NA 9.9% SilicaOK-llOsand at HSOmg/1. 11\easuring T5S 1)1!1' SM 2S400. l.lrge Scale !es.tins at 90 GPM with TPH Removal Rate NA 97% u,~ motot oil al 2.0 mgi'L IIWll.llrins ptr EPA Mettiod 1664A. 'Filter t,;gat 5°" ma:c solids stora8tcapacitV "Filter b~g ~t 50~ oil eapaeitY ,Moil sldmriie, poucti n 100'.looil capacity NOTES: 1. ALL FRAMING IS CONSTRUCTED OF 304 STAINLESS STEEL. INSTALLATION INSTRUCTIONS: 1. REMOVE GRATE 2. CLEAN GRATE LEDGE 3. SET INLET ALTER ON LOAD BEARING LEDGE OF STRUcnJRE 4. REPLACE GRATE 2. TOTAL BYPASS CAPACITY WILL VARY WITH EACH SIZE DRAINAGE STRUCT1JRE. ADS DESIGNS FRAMING BYPASS TO MEET OR EXCEED THE DESIGN FLOW OF TI-lE PARTICULAR DRAINAGE STRUCTURE. 3. UPON ORDERJNG, CONFIRMATION OF THE INLET SPECIFICATION, PRECAST/FOUNDRY CASTING MAKE AND MODEL, OR DETAILED DIMENSIONAL FORMS MUST BE PROVIDED TO CONFIGURE AND ASSEMBLE AN INLET FILTER. 4. ALL FILTERS MEET ASTM D8057 SPEOFICATIONS. 62SHD 62MHD 62LHD 6'.2XLHD SIZE DATE PWG NO Flow Rate /CfSl 2.4 3.5 5.0 ,., 5. FOR WRITTEN SPECIFICATIONS AND MAINTENANCE GUIDELINES VISIT WWW.ADSPIPE.COM. C 2/06/2023 ADS A_EXSTCRM PURE SH!ETl ~l ... "' C ' A Appendix I: Forms and Checklists 1.Is there a demand for harvested water (check all that apply) at the project site that is reliably present duringthe wet season?D Toilet and urinal flushingD Landscape irrigationD Other: ______2.If there is a demand; estimate the anticipated average wet season demand over a period of 36 hours. Guidancefor planning level demand calculations for toilet/ urinal flushing and landscape irrigation is provided in SectionB.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? D Yes / □No c:::>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. 3b. Is the 36 hour demand greater than 0.25DCV but less than the full DCV? D Yes / D No c:::> 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. Is harvest and use feasible based on further evaluation? D Yes, refer to Appendix E to select and size harvest and use BMPs. D No, select alternate BMPs. 1-2 3c. Is the 36 hour demand less than 0.25DCV? □Yes.[].Harvest and use is considered to be infeasible. February 2016 Irrigated Landscape = 0.092 ac (Use Moderate Hydrozone)36 hr demand = 1470 gpd/ac * 0.092 ac = 135 gallons 1,012 = 7,570 gallons 232 cf + 105 cf + 18 cf + 657 cf = 1,012 cf ✓ ✓ ✓ ✓ XX The project sites are Group D which have a very low infiltration potential and the building pad is at the top of previously graded slopes. Geosoils, Inc. issued a report titled "GEOTECHNICAL UPDATE EVALUATION AND RESPONSE TO THIRD-PARTY GEOTECHNICAL REVIEW COMMENTS ROMERIA POINTE APARTMENTS", dated 5/18/22 which states: "Storage or infiltration of surface runoff along the tops and toes of slopes should be avoided, if possible." There is no practical area on the site for infiltration BMPs with sufficient setback distance from the proposed buildings, retaining walls and slopes. XX Per the Geotechnical Report infiltration could adversely affect slope stability. Appendix I: Forms and Checklists C . . f I fil . F "bill C d" · Form 1-8 ategonzatton o n tratton east ty on 1t1on Part 1-Full Infiltration Feasibility Screening Criteria Would irutltration of the full design volume be feasible from a physical perspective without any undesirable consequences that cannot be reasonably mitigated? Criteria Screening Question Is the estimated reliable infiltration rate below proposed facility locations greater than 0.5 inches per hour? The response to this Screening Question must be based on a comprehensive evaluation of the factors presented in Appendix C.2 and Appendix D . Provide basis: Yes No Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/ data source applicability. 2 Can infiltration greater than 0.5 inches per hour be allowed without increasing risk of geotechnical hazards (slope stability, groundwater mounding, utilities, or other factors) that cannot be mitigated to an acceptable level? The response to this Screening Question must be based on a comprehensive evaluation of the factors presented in Appendix C.2. Provide basis: Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/ data source applicability. 1-3 February 26, 2016 Criteria 3 Appendix I: Forms and Checklists Form 1-8 Page 2 of 4 Screening Question Can infiltration greater than 0.5 inches per hour be allowed without increasing risk of groundwater contamination (shallow water table, storm water pollutants or other factors) that cannot be mitigated to an acceptable level? The response to this Screening Question must be based on a comprehensive evaluation of the factors presented in Appendix C.3. Yes No Provide basis: Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/ data source applicability. 4 Can infiltration greater than 0.5 inches per hour be allowed without causing potential water balance issues such as change of seasonality of ephemeral streams or increased discharge of contaminated groundwater to surface waters? The response to this Screening Question must be based on a comprehensive evaluation of the factors presented in Appendix C.3. Provide basis: Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/ data source applicability. Part 1 Result * If all answers to rows 1 - 4 are ''Yes" a full infiltration design is potentially feasible. The feasibility screening category is Full Infiltration If any answer from row 1-4 is "No", infiltration may be possible to some extent but would not generally be feasible or desirable to achieve a "full infiltration" design. Proceed to Part 2 ¥To be completed using gathered site information and best professional judgment considering the definition of MEP in the MS4 Permit. Additional testing and/or studies may be required by Agency/Jurisdictions to substantiate findings 1-4 February 26, 2016 XX NA - Infiltration is not feasible. XX NA - Infiltration is not feasible XX Geosoils, Inc. issued a report titled "GEOTECHNICAL UPDATE EVALUATION AND RESPONSE TO THIRD-PARTY GEOTECHNICAL REVIEW COMMENTS ROMERIA POINTE APARTMENTS", dated 5/18/22 which states: "Storage or infiltration of surface runoff along the tops and toes of slopes should be avoided, if possible." There is no practical area on the site for infiltration BMPs with sufficient setback distance from the proposed buildings, retaining walls and slopes. . XX Per the Geotechnical Report infiltration could adversly affect slope stability. Appendix I: Forms and Checklists Form 1-8 Page 3 of 4 Part 2 -Partial Infiltration vs. No Infiltration Feasibility Screening Criteria Would infiltration of water in any appreciable amount be physically feasible without any negative consequences that cannot be reasonably mitigated? Criteria 5 Screening Question Do soil and geologic conditions allow for infiltration in any appreciable rate or volume? The response to this Screening Question must be based on a comprehensive evaluation of the factors presented in Appendix C.2 and Appendix D. Provide basis: Yes No Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/ data source applicability and why it was not feasible to mitigate low infiltration rates. 6 Can Infiltration in any appreciable quantity be allowed without increasing risk of geotechnical hazards (slope stability, groundwater mounding, utilities, or other factors) that cannot be mitigated to an acceptable level? The response to this Screening Question must be based on a comprehensive evaluation of the factors presented in Appendix C.2. Provide basis: Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/ data source applicability and why it was not feasible to mitigate low infiltration rates. 1-5 February 26, 2016 Criteria 7 Appendix I: Forms and Checklists Form 1-8 Page 4 of 4 Screening Question Can Infiltration in any appreciable quantity be allowed without posing significant risk for groundwater related concerns (shallow water table, storm water pollutants or other factors)? The response to this Screening Question must be based on a comprehensive evaluation of the factors presented in Appendix C.3. Yes No Provide basis: Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/ data source applicability and why it was not feasible to mitigate low infiltration rates. 8 Can infiltration be allowed without violating downstream water rights? The response to this Screening Question must be based on a comprehensive evaluation of the factors presented in Appendix C.3. Provide basis: Summarize findings of studies; provide reference to studies, calculations, maps, data sources, etc. Provide narrative discussion of study/ data source applicability and why it was not feasible to mitigate low infiltration rates. Part2 Result* If all answers from row 1-4 are yes then partial infiltration design is potentially feasible. The feasibility screening category is Partial Infiltration. If any answer from row 5-8 is no, then infiltration of any volume is considered to be infeasible within the drainage area. The feasibility screening category is No Infiltration. *To be completed using gathered site information and best professional judgment considering the definition of MEP in the MS4 Permit. Additional testing and/ or studies may be required by Agency /Jurisdictions to substantiate findings1-6 February 26, 2016 No Infiltration XX NA - Infiltration is not feasible. XX NA - Infiltration is not feasible. Romeria Pointe SWQMP March 24, 2023 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) Design Capture Volume - Entire Site Worksheet B-2.1 1 85th percentile 24-hr storm depth from Figure B.1-1 d= 0.6 inches 2 Area A= 0.712 ac 3 Area weighted runoff factor (estimate using Appendix B.1.1 and B.2.1) See below. C= 0.727 unitless 4 Street trees volume reduction TCV= 0 cubic-feet 5 Rain barrels volume reduction RCV= 0 cubic-feet 6 Calculate DCV = (3630 x C x d x A) – TCV - RCV DCV= 1127 cubic-feet C= (Imp Area x 0.9 + (Perv Area)x0.30)/Total Area = (22054 x 0.9 + (31010-22054)x0.30)/31010=0.727 Category #Description i ii iii iv v vi vii viii ix x Units 1 Drainage Basin ID or Name DMA-10 DMA-11 DMA-12 DMA-16+18 unitless 2 85th Percentile 24-hr Storm Depth 0.60 0.60 0.60 0.60 inches 3 Impervious Surfaces Not Directed to Dispersion Area (C=0.90) 5,023 2,336 343 14,183 sq-ft 4 Semi-Pervious Surfaces Not Serving as Dispersion Area (C=0.30)sq-ft 5 Engineered Pervious Surfaces Not Serving as Dispersion Area (C=0.10)sq-ft 6 Natural Type A Soil Not Serving as Dispersion Area (C=0.10)sq-ft 7 Natural Type B Soil Not Serving as Dispersion Area (C=0.14)sq-ft 8 Natural Type C Soil Not Serving as Dispersion Area (C=0.23)sq-ft 9 Natural Type D Soil Not Serving as Dispersion Area (C=0.30)433 33 141 1,785 sq-ft 10 Does Tributary Incorporate Dispersion, Tree Wells, and/or Rain Barrels?No No No No No No No No No yes/no 11 Impervious Surfaces Directed to Dispersion Area per SD-B (Ci=0.90) sq-ft 12 Semi-Pervious Surfaces Serving as Dispersion Area per SD-B (Ci=0.30)sq-ft 13 Engineered Pervious Surfaces Serving as Dispersion Area per SD-B (Ci=0.10)sq-ft 14 Natural Type A Soil Serving as Dispersion Area per SD-B (Ci=0.10)sq-ft 15 Natural Type B Soil Serving as Dispersion Area per SD-B (Ci=0.14)sq-ft 16 Natural Type C Soil Serving as Dispersion Area per SD-B (Ci=0.23)sq-ft 17 Natural Type D Soil Serving as Dispersion Area per SD-B (Ci=0.30)sq-ft 18 Number of Tree Wells Proposed per SD-A # 19 Average Mature Tree Canopy Diameter ft 20 Number of Rain Barrels Proposed per SD-E # 21 Average Rain Barrel Size gal 22 Total Tributary Area 5,456 2,369 484 15,968 0 0 0 0 0 0 sq-ft 23 Initial Runoff Factor for Standard Drainage Areas 0.85 0.89 0.73 0.83 0.00 0.00 0.00 0.00 0.00 0.00 unitless 24 Initial Runoff Factor for Dispersed & Dispersion Areas 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 unitless 25 Initial Weighted Runoff Factor 0.85 0.89 0.73 0.83 0.00 0.00 0.00 0.00 0.00 0.00 unitless 26 Initial Design Capture Volume 232 105 18 663 0 0 0 0 0 0 cubic-feet 27 Total Impervious Area Dispersed to Pervious Surface 0 0 0 0 0 0 0 0 0 0 sq-ft 28 Total Pervious Dispersion Area 0 0 0 0 0 0 0 0 0 0 sq-ft 29 Ratio of Dispersed Impervious Area to Pervious Dispersion Area n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a ratio 30 Adjustment Factor for Dispersed & Dispersion Areas 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 ratio 31 Runoff Factor After Dispersion Techniques 0.85 0.89 0.73 0.83 n/a n/a n/a n/a n/a n/a unitless 32 Design Capture Volume After Dispersion Techniques 232 105 18 663 0 0 0 0 0 0 cubic-feet 33 Total Tree Well Volume Reduction 0 0 0 0 0 0 0 0 0 0 cubic-feet 34 Total Rain Barrel Volume Reduction 0 0 0 0 0 0 0 0 0 0 cubic-feet 35 Final Adjusted Runoff Factor 0.85 0.89 0.73 0.83 0.00 0.00 0.00 0.00 0.00 0.00 unitless 36 Final Effective Tributary Area 4,638 2,108 353 13,253 0 0 0 0 0 0 sq-ft 37 Initial Design Capture Volume Retained by Site Design Elements 0 0 0 0 0 0 0 0 0 0 cubic-feet 38 Final Design Capture Volume Tributary to BMP 232 105 18 663 0 0 0 0 0 0 cubic-feet False False Automated Worksheet B.1: Calculation of Design Capture Volume (V2.0) Dispersion Area, Tree Well & Rain Barrel Inputs (Optional) Standard Drainage Basin Inputs Results Tree & Barrel Adjustments Initial Runoff Factor Calculation Dispersion Area Adjustments No Warning Messages Category #Description i ii iii iv v vi vii viii ix x Units 1 Drainage Basin ID or Name DMA-10 DMA-11 DMA-12 DMA-16+18 ------unitless 2 85th Percentile Rainfall Depth 0.60 0.60 0.60 0.60 ------inches 3 Predominant NRCS Soil Type Within BMP Location D D D D unitless 4 Is proposed BMP location Restricted or Unrestricted for Infiltration Activities? Restricted Restricted Restricted Restricted unitless 5 Nature of Restriction Slopes Slopes Slopes Slopes unitless 6 Do Minimum Retention Requirements Apply to this Project?Yes Yes Yes Yes Yes Yes Yes Yes Yes yes/no 7 Are Habitable Structures Greater than 9 Stories Proposed?No No No No yes/no 8 Has Geotechnical Engineer Performed an Infiltration Analysis?No No No No yes/no 9 Design Infiltration Rate Recommended by Geotechnical Engineer in/hr 10 Design Infiltration Rate Used To Determine Retention Requirements 0.000 0.000 0.000 0.000 ------in/hr 11 Percent of Average Annual Runoff that Must be Retained within DMA 4.5%4.5%4.5%4.5%------percentage 12 Fraction of DCV Requiring Retention 0.02 0.02 0.02 0.02 ------ratio 13 Required Retention Volume 5 2 0 13 ------cubic-feet False False Automated Worksheet B.2: Retention Requirements (V2.0) Advanced Analysis Basic Analysis Result No Warning Messages Category #Description i ii iii iv v vi vii viii ix x Units 1 Drainage Basin ID or Name DMA-10 DMA-11 DMA-12 DMA-16+18 ------sq-ft 2 Design Infiltration Rate Recommended 0.000 0.000 0.000 0.000 ------in/hr 3 Design Capture Volume Tributary to BMP 232 105 18 663 ------cubic-feet 4 Is BMP Vegetated or Unvegetated?Vegetated Vegetated Vegetated Vegetated unitless 5 Is BMP Impermeably Lined or Unlined?Lined Lined Lined Lined unitless 6 Does BMP Have an Underdrain?Underdrain Underdrain Underdrain Underdrain unitless 7 Does BMP Utilize Standard or Specialized Media?Standard Standard Standard Standard unitless 8 Provided Surface Area 325 250 33 728 sq-ft 9 Provided Surface Ponding Depth 10 10 6 10 inches 10 Provided Soil Media Thickness 21 21 21 21 inches 11 Provided Gravel Thickness (Total Thickness)48 48 24 48 inches 12 Underdrain Offset 3 3 3 3 inches 13 Diameter of Underdrain or Hydromod Orifice (Select Smallest)0.25 0.25 0.50 0.40 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 0 0 0 0 0 0 0 0 cubic-feet 19 Ponding Pore Space Available for Retention 0.00 0.00 0.00 0.00 1.00 1.00 1.00 1.00 1.00 1.00 unitless 20 Soil Media Pore Space Available for Retention 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 unitless 21 Gravel Pore Space Available for Retention (Above Underdrain)0.00 0.00 0.00 0.00 0.40 0.40 0.40 0.40 0.40 0.40 unitless 22 Gravel Pore Space Available for Retention (Below Underdrain)0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 unitless 23 Effective Retention Depth 2.25 2.25 2.25 2.25 0.00 0.00 0.00 0.00 0.00 0.00 inches 24 Fraction of DCV Retained (Independent of Drawdown Time)0.26 0.45 0.34 0.21 0.00 0.00 0.00 0.00 0.00 0.00 ratio 25 Calculated Retention Storage Drawdown Time 120 120 120 120 0 0 0 0 0 0 hours 26 Efficacy of Retention Processes 0.27 0.43 0.34 0.23 0.00 0.00 0.00 0.00 0.00 0.00 ratio 27 Volume Retained by BMP (Considering Drawdown Time)63 45 6 152 0 0 0 0 0 0 cubic-feet 28 Design Capture Volume Remaining for Biofiltration 169 60 12 511 0 0 0 0 0 0 cubic-feet 29 Max Hydromod Flow Rate through Underdrain 0.0041 0.0041 0.0131 0.0106 0.0000 0.0000 0.0000 0.0000 0.0000 0.0000 cfs 30 Max Soil Filtration Rate Allowed by Underdrain Orifice 0.55 0.71 17.14 0.63 0.00 0.00 0.00 0.00 0.00 0.00 in/hr 31 Soil Media Filtration Rate per Specifications 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 in/hr 32 Soil Media Filtration Rate to be used for Sizing 0.55 0.71 5.00 0.63 0.00 0.00 0.00 0.00 0.00 0.00 in/hr 33 Depth Biofiltered Over 6 Hour Storm 3.29 4.28 30.00 3.76 0.00 0.00 0.00 0.00 0.00 0.00 inches 34 Ponding Pore Space Available for Biofiltration 1.00 1.00 1.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 unitless 35 Soil Media Pore Space Available for Biofiltration 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 unitless 36 Gravel Pore Space Available for Biofiltration (Above Underdrain)0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 unitless 37 Effective Depth of Biofiltration Storage 32.20 32.20 18.60 32.20 0.00 0.00 0.00 0.00 0.00 0.00 inches 38 Drawdown Time for Surface Ponding 18 14 1 16 0 0 0 0 0 0 hours 39 Drawdown Time for Effective Biofiltration Depth 59 45 4 51 0 0 0 0 0 0 hours 40 Total Depth Biofiltered 35.49 36.48 48.60 35.96 0.00 0.00 0.00 0.00 0.00 0.00 inches 41 Option 1 - Biofilter 1.50 DCV: Target Volume 253 90 18 766 0 0 0 0 0 0 cubic-feet 42 Option 1 - Provided Biofiltration Volume 253 90 18 766 0 0 0 0 0 0 cubic-feet 43 Option 2 - Store 0.75 DCV: Target Volume 127 45 9 383 0 0 0 0 0 0 cubic-feet 44 Option 2 - Provided Storage Volume 127 45 9 383 0 0 0 0 0 0 cubic-feet 45 Portion of Biofiltration Performance Standard Satisfied 1.00 1.00 1.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 ratio 46 Do Site Design Elements and BMPs Satisfy Annual Retention Requirements?Yes Yes Yes Yes ------yes/no 47 Overall Portion of Performance Standard Satisfied (BMP Efficacy Factor)1.00 1.00 1.00 1.00 0.00 0.00 0.00 0.00 0.00 0.00 ratio 48 Deficit of Effectively Treated Stormwater 0 0 0 0 n/a n/a n/a n/a n/a n/a cubic-feet Retention Calculations Automated Worksheet B.3: BMP Performance (V2.0) False False BMP Inputs Biofiltration Calculations False False False False Result False False No Warning Messages Romeria Pointe SWQMP March 24, 2023 ATTACHMENT 2 BACKUP FOR PDP HYDROMODIFICATION CONTROL MEASURES [This is the cover sheet for Attachment 2.] Indicate which Items are Included behind this cover sheet: Attachment Sequence Contents Checklist Attachment 2a Hydromodification Management Exhibit (Required) _✓_ Included – Combined with Attachment 1b 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 __ 6.2.1 Verification of Geomorphic Landscape Units Onsite __6.2.2 Downstream Systems Sensitivity to Coarse Sediment __ 6.2.3 Optional Additional Analysis of Potential Critical Coarse Sediment Yield Areas Onsite 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 Romeria Pointe SWQMP March 24, 2023 Attachment 2b WMAA Exhibit This is an enlarged portion of the WMAA Exhibit on the next page. 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The output results from the SDH 3.1 program are on the following pages. The project as designed passed the analysis. SDHM 3.1 PROJECT REPORT ROMERIA POINTE APARTMENTS Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 2 General Model Information Project Name:Romeria Pointe Site Name:Romeria Pointe Site Address: City:Carlsbad Report Date:1/3/2023 Gage:OCEANSID Data Start:10/01/1959 Data End:09/30/2004 Timestep:Hourly Precip Scale:1.000 Version Date:2021/06/28 POC Thresholds Low Flow Threshold for POC1:10 Percent of the 2 Year High Flow Threshold for POC1:10 Year Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 3 Landuse Basin Data Predeveloped Land Use Basin 1 Bypass:No GroundWater:No Pervious Land Use acre D,NatVeg,Steep 0.7119 Pervious Total 0.7119 Impervious Land Use acre Impervious Total 0 Basin Total 0.7119 Element Flows To: Surface Interflow Groundwater Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 4 Mitigated Land Use DMA-10 Bypass:No GroundWater:No Pervious Land Use acre D,Urban,Flat 0.0102 Pervious Total 0.0102 Impervious Land Use acre IMPERVIOUS-FLAT 0.1153 Impervious Total 0.1153 Basin Total 0.1255 Element Flows To: Surface Interflow Groundwater Surface BMP-1 Surface BMP-1 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 5 DMA-16 Bypass:No GroundWater:No Pervious Land Use acre D,Urban,Flat 0.041 Pervious Total 0.041 Impervious Land Use acre IMPERVIOUS-FLAT 0.3242 Impervious Total 0.3242 Basin Total 0.3652 Element Flows To: Surface Interflow Groundwater Surface BMP-3 Surface BMP-3 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 6 DMA-12 Bypass:No GroundWater:No Pervious Land Use acre D,Urban,Flat 0.0032 Pervious Total 0.0032 Impervious Land Use acre IMPERVIOUS-FLAT 0.0079 Impervious Total 0.0079 Basin Total 0.0111 Element Flows To: Surface Interflow Groundwater Surface BMP-4 Surface BMP-4 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 7 DMA-18 Bypass:No GroundWater:No Pervious Land Use acre Pervious Total 0 Impervious Land Use acre IMPERVIOUS-FLAT 0.0014 Impervious Total 0.0014 Basin Total 0.0014 Element Flows To: Surface Interflow Groundwater Surface BMP-3 Surface BMP-3 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 8 DMA-14 Bypass:Yes GroundWater:No Pervious Land Use acre D,Urban,Flat 0.0103 Pervious Total 0.0103 Impervious Land Use acre Impervious Total 0 Basin Total 0.0103 Element Flows To: Surface Interflow Groundwater Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 9 DMA-11 Bypass:No GroundWater:No Pervious Land Use acre D,Urban,Flat 0.0017 Pervious Total 0.0017 Impervious Land Use acre IMPERVIOUS-FLAT 0.0536 Impervious Total 0.0536 Basin Total 0.0553 Element Flows To: Surface Interflow Groundwater Surface BMP-2 Surface BMP-2 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 10 DMA-15 Bypass:Yes GroundWater:No Pervious Land Use acre D,Urban,Steep 0.074 Pervious Total 0.074 Impervious Land Use acre IMPERVIOUS-FLAT 0.002 Impervious Total 0.002 Basin Total 0.076 Element Flows To: Surface Interflow Groundwater Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 11 DMA-17 Bypass:Yes GroundWater:No Pervious Land Use acre D,Urban,Steep 0.0311 Pervious Total 0.0311 Impervious Land Use acre IMPERVIOUS-FLAT 0.0019 Impervious Total 0.0019 Basin Total 0.033 Element Flows To: Surface Interflow Groundwater Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 12 DMA-19 Bypass:Yes GroundWater:No Pervious Land Use acre D,Urban,Flat 0.0029 Pervious Total 0.0029 Impervious Land Use acre Impervious Total 0 Basin Total 0.0029 Element Flows To: Surface Interflow Groundwater Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 13 DMA-20 Bypass:Yes GroundWater:No Pervious Land Use acre D,Urban,Flat 0.0011 Pervious Total 0.0011 Impervious Land Use acre Impervious Total 0 Basin Total 0.0011 Element Flows To: Surface Interflow Groundwater Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 14 Routing Elements Predeveloped Routing Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 15 Mitigated Routing BMP-1 Bottom Length: 65.00 ft. Bottom Width: 5.00 ft. Material thickness of first layer: 0.25 Material type for first layer: Mulch Material thickness of second layer: 1.5 Material type for second layer: ESM Material thickness of third layer: 4 Material type for third layer: GRAVEL Underdrain used Underdrain Diameter (feet):0.5 Orifice Diameter (in.):0.25 Offset (in.):3 Flow Through Underdrain (ac-ft.):3.769 Total Outflow (ac-ft.):3.933 Percent Through Underdrain:95.82 Discharge Structure Riser Height:0.83 ft. Riser Diameter:24 in. Element Flows To: Outlet 1 Outlet 2 Biofilter Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)Infilt(cfs) 89.580 0.0075 0.0000 0.0000 0.0000 89.658 0.0075 0.0002 0.0000 0.0000 89.736 0.0075 0.0003 0.0000 0.0000 89.813 0.0075 0.0005 0.0000 0.0000 89.891 0.0075 0.0007 0.0000 0.0000 89.969 0.0075 0.0009 0.0000 0.0000 90.047 0.0075 0.0010 0.0000 0.0000 90.125 0.0075 0.0012 0.0000 0.0000 90.202 0.0075 0.0014 0.0000 0.0000 90.280 0.0075 0.0016 0.0000 0.0000 90.358 0.0075 0.0017 0.0000 0.0000 90.436 0.0075 0.0019 0.0000 0.0000 90.514 0.0075 0.0021 0.0000 0.0000 90.591 0.0075 0.0023 0.0000 0.0000 90.669 0.0075 0.0024 0.0002 0.0000 90.747 0.0075 0.0026 0.0003 0.0000 90.825 0.0075 0.0028 0.0004 0.0000 90.903 0.0075 0.0030 0.0004 0.0000 90.980 0.0075 0.0031 0.0005 0.0000 91.058 0.0075 0.0033 0.0006 0.0000 91.136 0.0075 0.0035 0.0006 0.0000 91.214 0.0075 0.0037 0.0007 0.0000 91.292 0.0075 0.0038 0.0007 0.0000 91.369 0.0075 0.0041 0.0007 0.0000 91.447 0.0075 0.0043 0.0008 0.0000 91.525 0.0075 0.0046 0.0008 0.0000 91.603 0.0075 0.0048 0.0008 0.0000 91.681 0.0075 0.0050 0.0009 0.0000 91.758 0.0075 0.0053 0.0009 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 16 91.836 0.0075 0.0055 0.0009 0.0000 91.914 0.0075 0.0058 0.0010 0.0000 91.992 0.0075 0.0060 0.0010 0.0000 92.070 0.0075 0.0062 0.0011 0.0000 92.147 0.0075 0.0065 0.0012 0.0000 92.225 0.0075 0.0067 0.0012 0.0000 92.303 0.0075 0.0070 0.0013 0.0000 92.381 0.0075 0.0072 0.0014 0.0000 92.459 0.0075 0.0074 0.0015 0.0000 92.536 0.0075 0.0077 0.0016 0.0000 92.614 0.0075 0.0079 0.0016 0.0000 92.692 0.0075 0.0082 0.0017 0.0000 92.770 0.0075 0.0084 0.0018 0.0000 92.848 0.0075 0.0086 0.0018 0.0000 92.925 0.0075 0.0089 0.0019 0.0000 93.003 0.0075 0.0091 0.0019 0.0000 93.081 0.0075 0.0094 0.0020 0.0000 93.159 0.0075 0.0096 0.0021 0.0000 93.237 0.0075 0.0099 0.0021 0.0000 93.315 0.0075 0.0101 0.0022 0.0000 93.392 0.0075 0.0103 0.0022 0.0000 93.470 0.0075 0.0106 0.0023 0.0000 93.548 0.0075 0.0108 0.0023 0.0000 93.626 0.0075 0.0111 0.0024 0.0000 93.704 0.0075 0.0113 0.0024 0.0000 93.781 0.0075 0.0115 0.0025 0.0000 93.859 0.0075 0.0118 0.0025 0.0000 93.937 0.0075 0.0120 0.0025 0.0000 94.015 0.0075 0.0123 0.0026 0.0000 94.093 0.0075 0.0125 0.0026 0.0000 94.170 0.0075 0.0127 0.0027 0.0000 94.248 0.0075 0.0130 0.0027 0.0000 94.326 0.0075 0.0132 0.0028 0.0000 94.404 0.0075 0.0135 0.0028 0.0000 94.482 0.0075 0.0137 0.0028 0.0000 94.559 0.0075 0.0139 0.0029 0.0000 94.637 0.0075 0.0142 0.0029 0.0000 94.715 0.0075 0.0144 0.0030 0.0000 94.793 0.0075 0.0147 0.0030 0.0000 94.871 0.0075 0.0149 0.0030 0.0000 94.948 0.0075 0.0152 0.0031 0.0000 95.026 0.0075 0.0154 0.0031 0.0000 95.104 0.0075 0.0156 0.0031 0.0000 95.182 0.0075 0.0159 0.0032 0.0000 95.260 0.0075 0.0161 0.0032 0.0000 95.330 0.0075 0.0163 0.0040 0.0000 Biofilter Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)To Amended(cfs)Infilt(cfs) 5.7500 0.0075 0.0163 0.0000 0.0376 0.0000 5.8278 0.0075 0.0169 0.0000 0.0376 0.0000 5.9056 0.0075 0.0175 0.0000 0.0478 0.0000 5.9834 0.0075 0.0181 0.0000 0.0497 0.0000 6.0612 0.0075 0.0187 0.0000 0.0517 0.0000 6.1390 0.0075 0.0192 0.0000 0.0536 0.0000 6.2168 0.0075 0.0198 0.0000 0.0556 0.0000 6.2946 0.0075 0.0204 0.0000 0.0575 0.0000 6.3724 0.0075 0.0210 0.0000 0.0595 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 17 6.4502 0.0075 0.0216 0.0000 0.0614 0.0000 6.5280 0.0075 0.0221 0.0000 0.0634 0.0000 6.6058 0.0075 0.0227 0.0881 0.0653 0.0000 6.6836 0.0075 0.0233 0.7070 0.0673 0.0000 6.7614 0.0075 0.0239 1.6323 0.0692 0.0000 6.8392 0.0075 0.0245 2.7663 0.0712 0.0000 6.9170 0.0075 0.0250 4.0422 0.0732 0.0000 6.9948 0.0075 0.0256 5.3956 0.0751 0.0000 7.0726 0.0075 0.0262 6.7602 0.0771 0.0000 7.0800 0.0075 0.0263 8.0699 0.0772 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 18 Surface BMP-1 Element Flows To: Outlet 1 Outlet 2 BMP-1 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 19 BMP-2 Bottom Length: 50.00 ft. Bottom Width: 5.00 ft. Material thickness of first layer: 0.25 Material type for first layer: Mulch Material thickness of second layer: 1.5 Material type for second layer: ESM Material thickness of third layer: 4 Material type for third layer: GRAVEL Underdrain used Underdrain Diameter (feet):0.5 Orifice Diameter (in.):0.25 Offset (in.):3 Flow Through Underdrain (ac-ft.):1.771 Total Outflow (ac-ft.):1.774 Percent Through Underdrain:99.81 Discharge Structure Riser Height:0.83 ft. Riser Diameter:24 in. Orifice 1 Diameter:0.5 in.Elevation:0.5 ft. Element Flows To: Outlet 1 Outlet 2 Biofilter Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)Infilt(cfs) 79.250 0.0057 0.0000 0.0000 0.0000 79.328 0.0057 0.0001 0.0000 0.0000 79.406 0.0057 0.0003 0.0000 0.0000 79.483 0.0057 0.0004 0.0000 0.0000 79.561 0.0057 0.0005 0.0000 0.0000 79.639 0.0057 0.0007 0.0000 0.0000 79.717 0.0057 0.0008 0.0000 0.0000 79.795 0.0057 0.0009 0.0000 0.0000 79.872 0.0057 0.0011 0.0000 0.0000 79.950 0.0057 0.0012 0.0000 0.0000 80.028 0.0057 0.0013 0.0000 0.0000 80.106 0.0057 0.0015 0.0000 0.0000 80.184 0.0057 0.0016 0.0000 0.0000 80.261 0.0057 0.0017 0.0000 0.0000 80.339 0.0057 0.0019 0.0002 0.0000 80.417 0.0057 0.0020 0.0003 0.0000 80.495 0.0057 0.0021 0.0004 0.0000 80.573 0.0057 0.0023 0.0004 0.0000 80.650 0.0057 0.0024 0.0005 0.0000 80.728 0.0057 0.0025 0.0006 0.0000 80.806 0.0057 0.0027 0.0006 0.0000 80.884 0.0057 0.0028 0.0007 0.0000 80.962 0.0057 0.0029 0.0007 0.0000 81.039 0.0057 0.0031 0.0007 0.0000 81.117 0.0057 0.0033 0.0008 0.0000 81.195 0.0057 0.0035 0.0008 0.0000 81.273 0.0057 0.0037 0.0008 0.0000 81.351 0.0057 0.0039 0.0009 0.0000 81.428 0.0057 0.0041 0.0009 0.0000 81.506 0.0057 0.0042 0.0009 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 20 81.584 0.0057 0.0044 0.0010 0.0000 81.662 0.0057 0.0046 0.0010 0.0000 81.740 0.0057 0.0048 0.0011 0.0000 81.817 0.0057 0.0050 0.0012 0.0000 81.895 0.0057 0.0052 0.0012 0.0000 81.973 0.0057 0.0054 0.0013 0.0000 82.051 0.0057 0.0055 0.0014 0.0000 82.129 0.0057 0.0057 0.0015 0.0000 82.206 0.0057 0.0059 0.0016 0.0000 82.284 0.0057 0.0061 0.0016 0.0000 82.362 0.0057 0.0063 0.0017 0.0000 82.440 0.0057 0.0065 0.0018 0.0000 82.518 0.0057 0.0067 0.0018 0.0000 82.595 0.0057 0.0068 0.0019 0.0000 82.673 0.0057 0.0070 0.0019 0.0000 82.751 0.0057 0.0072 0.0020 0.0000 82.829 0.0057 0.0074 0.0021 0.0000 82.907 0.0057 0.0076 0.0021 0.0000 82.985 0.0057 0.0078 0.0022 0.0000 83.062 0.0057 0.0080 0.0022 0.0000 83.140 0.0057 0.0081 0.0023 0.0000 83.218 0.0057 0.0083 0.0023 0.0000 83.296 0.0057 0.0085 0.0024 0.0000 83.374 0.0057 0.0087 0.0024 0.0000 83.451 0.0057 0.0089 0.0025 0.0000 83.529 0.0057 0.0091 0.0025 0.0000 83.607 0.0057 0.0092 0.0025 0.0000 83.685 0.0057 0.0094 0.0026 0.0000 83.763 0.0057 0.0096 0.0026 0.0000 83.840 0.0057 0.0098 0.0027 0.0000 83.918 0.0057 0.0100 0.0027 0.0000 83.996 0.0057 0.0102 0.0028 0.0000 84.074 0.0057 0.0104 0.0028 0.0000 84.152 0.0057 0.0105 0.0028 0.0000 84.229 0.0057 0.0107 0.0029 0.0000 84.307 0.0057 0.0109 0.0029 0.0000 84.385 0.0057 0.0111 0.0030 0.0000 84.463 0.0057 0.0113 0.0030 0.0000 84.541 0.0057 0.0115 0.0030 0.0000 84.618 0.0057 0.0117 0.0031 0.0000 84.696 0.0057 0.0118 0.0031 0.0000 84.774 0.0057 0.0120 0.0031 0.0000 84.852 0.0057 0.0122 0.0032 0.0000 84.930 0.0057 0.0124 0.0032 0.0000 85.000 0.0057 0.0126 0.0040 0.0000 Biofilter Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)To Amended(cfs)Infilt(cfs) 5.7500 0.0057 0.0126 0.0000 0.0289 0.0000 5.8278 0.0057 0.0130 0.0000 0.0289 0.0000 5.9056 0.0057 0.0135 0.0000 0.0368 0.0000 5.9834 0.0057 0.0139 0.0000 0.0383 0.0000 6.0612 0.0057 0.0144 0.0000 0.0398 0.0000 6.1390 0.0057 0.0148 0.0000 0.0413 0.0000 6.2168 0.0057 0.0152 0.0000 0.0428 0.0000 6.2946 0.0057 0.0157 0.0014 0.0443 0.0000 6.3724 0.0057 0.0161 0.0024 0.0458 0.0000 6.4502 0.0057 0.0166 0.0030 0.0473 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 21 6.5280 0.0057 0.0170 0.0036 0.0488 0.0000 6.6058 0.0057 0.0175 0.0921 0.0503 0.0000 6.6836 0.0057 0.0179 0.7114 0.0518 0.0000 6.7614 0.0057 0.0184 1.6372 0.0533 0.0000 6.8392 0.0057 0.0188 2.7715 0.0548 0.0000 6.9170 0.0057 0.0193 4.0477 0.0563 0.0000 6.9948 0.0057 0.0197 5.4014 0.0578 0.0000 7.0726 0.0057 0.0202 6.7664 0.0593 0.0000 7.0800 0.0057 0.0202 8.0763 0.0594 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 22 Surface BMP-2 Element Flows To: Outlet 1 Outlet 2 BMP-2 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 23 BMP-3 Bottom Length: 112.00 ft. Bottom Width: 6.50 ft. Material thickness of first layer: 0.25 Material type for first layer: Mulch Material thickness of second layer: 1.5 Material type for second layer: ESM Material thickness of third layer: 4 Material type for third layer: GRAVEL Underdrain used Underdrain Diameter (feet):0.5 Orifice Diameter (in.):0.4 Offset (in.):3 Flow Through Underdrain (ac-ft.):9.967 Total Outflow (ac-ft.):11.284 Percent Through Underdrain:88.33 Discharge Structure Riser Height:0.83 ft. Riser Diameter:24 in. Orifice 1 Diameter:4 in.Elevation:0.25 ft. Element Flows To: Outlet 1 Outlet 2 Biofilter Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)Infilt(cfs) 60.050 0.0167 0.0000 0.0000 0.0000 60.128 0.0167 0.0004 0.0000 0.0000 60.206 0.0167 0.0008 0.0000 0.0000 60.283 0.0167 0.0012 0.0000 0.0000 60.361 0.0167 0.0016 0.0000 0.0000 60.439 0.0167 0.0020 0.0000 0.0000 60.517 0.0167 0.0023 0.0000 0.0000 60.595 0.0167 0.0027 0.0000 0.0000 60.672 0.0167 0.0031 0.0000 0.0000 60.750 0.0167 0.0035 0.0000 0.0000 60.828 0.0167 0.0039 0.0000 0.0000 60.906 0.0167 0.0043 0.0000 0.0000 60.984 0.0167 0.0047 0.0000 0.0000 61.061 0.0167 0.0051 0.0000 0.0000 61.139 0.0167 0.0055 0.0005 0.0000 61.217 0.0167 0.0059 0.0008 0.0000 61.295 0.0167 0.0062 0.0009 0.0000 61.373 0.0167 0.0066 0.0011 0.0000 61.450 0.0167 0.0070 0.0012 0.0000 61.528 0.0167 0.0074 0.0014 0.0000 61.606 0.0167 0.0078 0.0015 0.0000 61.684 0.0167 0.0082 0.0017 0.0000 61.762 0.0167 0.0086 0.0017 0.0000 61.839 0.0167 0.0091 0.0019 0.0000 61.917 0.0167 0.0097 0.0019 0.0000 61.995 0.0167 0.0102 0.0021 0.0000 62.073 0.0167 0.0107 0.0021 0.0000 62.151 0.0167 0.0113 0.0022 0.0000 62.228 0.0167 0.0118 0.0023 0.0000 62.306 0.0167 0.0124 0.0024 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 24 62.384 0.0167 0.0129 0.0025 0.0000 62.462 0.0167 0.0134 0.0027 0.0000 62.540 0.0167 0.0140 0.0028 0.0000 62.617 0.0167 0.0145 0.0030 0.0000 62.695 0.0167 0.0151 0.0032 0.0000 62.773 0.0167 0.0156 0.0034 0.0000 62.851 0.0167 0.0161 0.0036 0.0000 62.929 0.0167 0.0167 0.0038 0.0000 63.006 0.0167 0.0172 0.0040 0.0000 63.084 0.0167 0.0178 0.0042 0.0000 63.162 0.0167 0.0183 0.0043 0.0000 63.240 0.0167 0.0188 0.0045 0.0000 63.318 0.0167 0.0194 0.0047 0.0000 63.395 0.0167 0.0199 0.0048 0.0000 63.473 0.0167 0.0205 0.0050 0.0000 63.551 0.0167 0.0210 0.0051 0.0000 63.629 0.0167 0.0215 0.0053 0.0000 63.707 0.0167 0.0221 0.0054 0.0000 63.785 0.0167 0.0226 0.0055 0.0000 63.862 0.0167 0.0232 0.0057 0.0000 63.940 0.0167 0.0237 0.0058 0.0000 64.018 0.0167 0.0242 0.0059 0.0000 64.096 0.0167 0.0248 0.0060 0.0000 64.174 0.0167 0.0253 0.0062 0.0000 64.251 0.0167 0.0258 0.0063 0.0000 64.329 0.0167 0.0264 0.0064 0.0000 64.407 0.0167 0.0269 0.0065 0.0000 64.485 0.0167 0.0275 0.0066 0.0000 64.563 0.0167 0.0280 0.0067 0.0000 64.640 0.0167 0.0285 0.0068 0.0000 64.718 0.0167 0.0291 0.0069 0.0000 64.796 0.0167 0.0296 0.0071 0.0000 64.874 0.0167 0.0302 0.0072 0.0000 64.952 0.0167 0.0307 0.0073 0.0000 65.029 0.0167 0.0312 0.0074 0.0000 65.107 0.0167 0.0318 0.0075 0.0000 65.185 0.0167 0.0323 0.0076 0.0000 65.263 0.0167 0.0329 0.0077 0.0000 65.341 0.0167 0.0334 0.0077 0.0000 65.418 0.0167 0.0339 0.0078 0.0000 65.496 0.0167 0.0345 0.0079 0.0000 65.574 0.0167 0.0350 0.0080 0.0000 65.652 0.0167 0.0356 0.0081 0.0000 65.730 0.0167 0.0361 0.0082 0.0000 65.800 0.0167 0.0366 0.0102 0.0000 Biofilter Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)To Amended(cfs)Infilt(cfs) 5.7500 0.0167 0.0366 0.0000 0.0843 0.0000 5.8278 0.0167 0.0379 0.0000 0.0843 0.0000 5.9056 0.0167 0.0392 0.0000 0.1070 0.0000 5.9834 0.0167 0.0405 0.0000 0.1114 0.0000 6.0612 0.0167 0.0418 0.1074 0.1158 0.0000 6.1390 0.0167 0.0431 0.1619 0.1202 0.0000 6.2168 0.0167 0.0444 0.2022 0.1245 0.0000 6.2946 0.0167 0.0457 0.2357 0.1289 0.0000 6.3724 0.0167 0.0470 0.2650 0.1333 0.0000 6.4502 0.0167 0.0483 0.2913 0.1376 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 25 6.5280 0.0167 0.0496 0.3155 0.1420 0.0000 6.6058 0.0167 0.0509 0.4260 0.1464 0.0000 6.6836 0.0167 0.0522 1.0660 0.1507 0.0000 6.7614 0.0167 0.0535 2.0112 0.1551 0.0000 6.8392 0.0167 0.0548 3.1640 0.1595 0.0000 6.9170 0.0167 0.0561 4.4579 0.1639 0.0000 6.9948 0.0167 0.0574 5.8286 0.1682 0.0000 7.0726 0.0167 0.0587 7.2099 0.1726 0.0000 7.0800 0.0167 0.0588 8.5356 0.1730 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 26 Surface BMP-3 Element Flows To: Outlet 1 Outlet 2 BMP-3 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 27 BMP-4 Bottom Length: 7.60 ft. Bottom Width: 5.00 ft. Material thickness of first layer: 0.25 Material type for first layer: Mulch Material thickness of second layer: 1.5 Material type for second layer: ESM Material thickness of third layer: 2 Material type for third layer: GRAVEL Underdrain used Underdrain Diameter (feet):0.5 Orifice Diameter (in.):0.25 Offset (in.):3 Flow Through Underdrain (ac-ft.):0.277 Total Outflow (ac-ft.):0.278 Percent Through Underdrain:99.55 Discharge Structure Riser Height:0.5 ft. Riser Diameter:12 in. Element Flows To: Outlet 1 Outlet 2 Biofilter Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)Infilt(cfs) 66.000 0.0009 0.0000 0.0000 0.0000 66.052 0.0009 0.0000 0.0000 0.0000 66.104 0.0009 0.0000 0.0000 0.0000 66.157 0.0009 0.0000 0.0000 0.0000 66.209 0.0009 0.0001 0.0000 0.0000 66.261 0.0009 0.0001 0.0000 0.0000 66.313 0.0009 0.0001 0.0000 0.0000 66.365 0.0009 0.0001 0.0000 0.0000 66.418 0.0009 0.0001 0.0000 0.0000 66.470 0.0009 0.0001 0.0000 0.0000 66.522 0.0009 0.0001 0.0000 0.0000 66.574 0.0009 0.0002 0.0000 0.0000 66.626 0.0009 0.0002 0.0000 0.0000 66.679 0.0009 0.0002 0.0000 0.0000 66.731 0.0009 0.0002 0.0000 0.0000 66.783 0.0009 0.0002 0.0000 0.0000 66.835 0.0009 0.0002 0.0000 0.0000 66.887 0.0009 0.0002 0.0000 0.0000 66.940 0.0009 0.0002 0.0000 0.0000 66.992 0.0009 0.0003 0.0000 0.0000 67.044 0.0009 0.0003 0.0000 0.0000 67.096 0.0009 0.0003 0.0000 0.0000 67.148 0.0009 0.0003 0.0000 0.0000 67.201 0.0009 0.0003 0.0000 0.0000 67.253 0.0009 0.0003 0.0000 0.0000 67.305 0.0009 0.0003 0.0000 0.0000 67.357 0.0009 0.0004 0.0000 0.0000 67.409 0.0009 0.0004 0.0001 0.0000 67.462 0.0009 0.0004 0.0002 0.0000 67.514 0.0009 0.0004 0.0003 0.0000 67.566 0.0009 0.0004 0.0003 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 28 67.618 0.0009 0.0004 0.0004 0.0000 67.670 0.0009 0.0004 0.0004 0.0000 67.723 0.0009 0.0005 0.0005 0.0000 67.775 0.0009 0.0005 0.0005 0.0000 67.827 0.0009 0.0005 0.0006 0.0000 67.879 0.0009 0.0005 0.0006 0.0000 67.931 0.0009 0.0005 0.0006 0.0000 67.984 0.0009 0.0005 0.0006 0.0000 68.036 0.0009 0.0006 0.0007 0.0000 68.088 0.0009 0.0006 0.0007 0.0000 68.140 0.0009 0.0006 0.0007 0.0000 68.192 0.0009 0.0006 0.0008 0.0000 68.245 0.0009 0.0006 0.0008 0.0000 68.297 0.0009 0.0007 0.0008 0.0000 68.349 0.0009 0.0007 0.0009 0.0000 68.401 0.0009 0.0007 0.0010 0.0000 68.453 0.0009 0.0007 0.0010 0.0000 68.505 0.0009 0.0007 0.0011 0.0000 68.558 0.0009 0.0008 0.0012 0.0000 68.610 0.0009 0.0008 0.0012 0.0000 68.662 0.0009 0.0008 0.0013 0.0000 68.714 0.0009 0.0008 0.0013 0.0000 68.766 0.0009 0.0008 0.0014 0.0000 68.819 0.0009 0.0008 0.0015 0.0000 68.871 0.0009 0.0009 0.0015 0.0000 68.923 0.0009 0.0009 0.0016 0.0000 68.975 0.0009 0.0009 0.0016 0.0000 69.027 0.0009 0.0009 0.0016 0.0000 69.080 0.0009 0.0009 0.0017 0.0000 69.132 0.0009 0.0010 0.0017 0.0000 69.184 0.0009 0.0010 0.0018 0.0000 69.236 0.0009 0.0010 0.0018 0.0000 69.288 0.0009 0.0010 0.0019 0.0000 69.341 0.0009 0.0010 0.0019 0.0000 69.393 0.0009 0.0011 0.0019 0.0000 69.445 0.0009 0.0011 0.0020 0.0000 69.497 0.0009 0.0011 0.0020 0.0000 69.549 0.0009 0.0011 0.0021 0.0000 69.602 0.0009 0.0011 0.0021 0.0000 69.654 0.0009 0.0011 0.0021 0.0000 69.706 0.0009 0.0012 0.0022 0.0000 69.750 0.0009 0.0012 0.0032 0.0000 Biofilter Hydraulic Table Stage(feet)Area(ac.)Volume(ac-ft.)Discharge(cfs)To Amended(cfs)Infilt(cfs) 3.7500 0.0008720.001185 0.0000 0.0044 0.0000 3.8022 0.0008720.001230 0.0000 0.0044 0.0000 3.8544 0.0008720.001276 0.0000 0.0054 0.0000 3.9066 0.0008720.001321 0.0000 0.0056 0.0000 3.9588 0.0008720.001367 0.0000 0.0057 0.0000 4.0110 0.0008720.001412 0.0000 0.0059 0.0000 4.0632 0.0008720.001458 0.0000 0.0060 0.0000 4.1154 0.0008720.001504 0.0000 0.0062 0.0000 4.1676 0.0008720.001549 0.0000 0.0064 0.0000 4.2198 0.0008720.001595 0.0000 0.0065 0.0000 4.2720 0.0008720.001640 0.0346 0.0067 0.0000 4.3242 0.0008720.001686 0.2137 0.0068 0.0000 4.3764 0.0008720.001731 0.4712 0.0070 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 29 4.4286 0.0008720.001777 0.7756 0.0071 0.0000 4.4808 0.0008720.001822 1.0991 0.0073 0.0000 4.5330 0.0008720.001868 1.4136 0.0074 0.0000 4.5852 0.0008720.001913 1.6924 0.0076 0.0000 4.6374 0.0008720.001959 1.9155 0.0077 0.0000 4.6896 0.0008720.002004 2.0761 0.0079 0.0000 4.7418 0.0008720.002050 2.1878 0.0080 0.0000 4.7500 0.0008720.002057 2.3230 0.0081 0.0000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 30 Surface BMP-4 Element Flows To: Outlet 1 Outlet 2 BMP-4 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:45 PM Page 31 Analysis Results POC 1 + Predeveloped x Mitigated Predeveloped Landuse Totals for POC #1 Total Pervious Area: 0.7119 Total Impervious Area: 0 Mitigated Landuse Totals for POC #1 Total Pervious Area: 0.1755 Total Impervious Area: 0.5063 Flow Frequency Method: Cunnane Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.202556 5 year 0.3293 10 year 0.434657 25 year 0.555835 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.16229 5 year 0.272949 10 year 0.363439 25 year 0.423044 Attachment 2d: Flow Control Facility Design 0<3 ,. 1-..--1 " •• + .. ♦♦ ♦-+ •• • -t+-++++•·· _ .. ••• .. 0.33 £ " ~ 0 23 ~ 0 ~ J u. u. 0.12 0.02 11:t·< 11:t·J 1tt•2 10E·1 10 100 ><+><♦-♦,..,..,.... 0.001 ... , P-ro-not: -W.m-Ex.c..--dfng ,., ' 2 " ,. 30 .. 10 ., .. " " "'" ' Romeria Pointe 1/3/2023 2:39:50 PM Page 32 Duration Flows The Facility PASSED Flow(cfs)Predev Mit Percentage Pass/Fail 0.0203 650 607 93 Pass 0.0244 587 451 76 Pass 0.0286 512 385 75 Pass 0.0328 456 325 71 Pass 0.0370 401 287 71 Pass 0.0412 347 258 74 Pass 0.0454 283 235 83 Pass 0.0496 255 207 81 Pass 0.0537 240 191 79 Pass 0.0579 224 175 78 Pass 0.0621 206 156 75 Pass 0.0663 194 142 73 Pass 0.0705 180 137 76 Pass 0.0747 176 128 72 Pass 0.0789 169 119 70 Pass 0.0830 155 111 71 Pass 0.0872 148 106 71 Pass 0.0914 139 101 72 Pass 0.0956 134 96 71 Pass 0.0998 122 90 73 Pass 0.1040 117 85 72 Pass 0.1082 101 80 79 Pass 0.1123 92 78 84 Pass 0.1165 88 73 82 Pass 0.1207 86 67 77 Pass 0.1249 84 63 75 Pass 0.1291 81 61 75 Pass 0.1333 78 58 74 Pass 0.1375 71 53 74 Pass 0.1416 66 50 75 Pass 0.1458 64 45 70 Pass 0.1500 61 41 67 Pass 0.1542 58 40 68 Pass 0.1584 55 36 65 Pass 0.1626 54 36 66 Pass 0.1668 48 34 70 Pass 0.1709 45 32 71 Pass 0.1751 43 29 67 Pass 0.1793 39 27 69 Pass 0.1835 38 25 65 Pass 0.1877 36 24 66 Pass 0.1919 35 24 68 Pass 0.1961 33 20 60 Pass 0.2002 30 20 66 Pass 0.2044 29 20 68 Pass 0.2086 26 19 73 Pass 0.2128 25 18 72 Pass 0.2170 23 18 78 Pass 0.2212 23 18 78 Pass 0.2254 23 18 78 Pass 0.2295 21 17 80 Pass 0.2337 19 16 84 Pass 0.2379 17 16 94 Pass Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:50 PM Page 33 0.2421 17 14 82 Pass 0.2463 17 14 82 Pass 0.2505 17 13 76 Pass 0.2547 17 13 76 Pass 0.2589 17 12 70 Pass 0.2630 17 12 70 Pass 0.2672 17 11 64 Pass 0.2714 16 10 62 Pass 0.2756 15 9 60 Pass 0.2798 15 8 53 Pass 0.2840 15 8 53 Pass 0.2882 15 8 53 Pass 0.2923 15 8 53 Pass 0.2965 14 8 57 Pass 0.3007 14 7 50 Pass 0.3049 12 7 58 Pass 0.3091 12 7 58 Pass 0.3133 10 7 70 Pass 0.3175 10 7 70 Pass 0.3216 9 7 77 Pass 0.3258 9 7 77 Pass 0.3300 9 7 77 Pass 0.3342 8 7 87 Pass 0.3384 8 7 87 Pass 0.3426 8 7 87 Pass 0.3468 8 7 87 Pass 0.3509 8 7 87 Pass 0.3551 8 7 87 Pass 0.3593 8 6 75 Pass 0.3635 7 6 85 Pass 0.3677 7 4 57 Pass 0.3719 7 4 57 Pass 0.3761 7 4 57 Pass 0.3802 7 4 57 Pass 0.3844 6 4 66 Pass 0.3886 6 4 66 Pass 0.3928 6 4 66 Pass 0.3970 6 4 66 Pass 0.4012 6 4 66 Pass 0.4054 6 3 50 Pass 0.4095 6 1 16 Pass 0.4137 6 1 16 Pass 0.4179 6 1 16 Pass 0.4221 6 1 16 Pass 0.4263 6 1 16 Pass 0.4305 6 1 16 Pass 0.4347 6 1 16 Pass Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:50 PM Page 34 Water Quality Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:51 PM Page 35 Model Default Modifications Total of 0 changes have been made. PERLND Changes No PERLND changes have been made. IMPLND Changes No IMPLND changes have been made. Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:51 PM Page 36 Appendix Predeveloped Schematic Attachment 2d: Flow Control Facility Design r --=-• Basin 11 llrm 0.71aa Romeria Pointe 1/3/2023 2:39:51 PM Page 37 Mitigated Schematic Attachment 2d: Flow Control Facility Design MA- .13a BMP-BMP-4 Romeria Pointe 1/3/2023 2:39:52 PM Page 38 Predeveloped UCI File RUN GLOBAL WWHM4 model simulation START 1959 10 01 END 2004 09 30 RUN INTERP OUTPUT LEVEL 3 0 RESUME 0 RUN 1 UNIT SYSTEM 1 END GLOBAL FILES <File> <Un#> <-----------File Name------------------------------>*** <-ID->*** WDM 26 Romeria Pointe.wdm MESSU 25 PreRomeria Pointe.MES 27 PreRomeria Pointe.L61 28 PreRomeria Pointe.L62 30 POCRomeria Pointe1.dat END FILES OPN SEQUENCE INGRP INDELT 00:60 PERLND 30 COPY 501 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Basin 1 MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 END TIMESERIES END COPY GENER OPCODE # # OPCD *** END OPCODE PARM # # K *** END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - #User t-series Engl Metr *** in out *** 30 D,NatVeg,Steep 1 1 1 1 27 0 END GEN-INFO *** Section PWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *** 30 0 0 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ***************************** PIVL PYR # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ********* 30 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 39 PWAT-PARM1 <PLS > PWATER variable monthly parameter value flags *** # - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT *** 30 0 1 1 1 0 0 0 0 1 1 0 END PWAT-PARM1 PWAT-PARM2 <PLS > PWATER input info: Part 2 *** # - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC 30 0 2.7 0.02 75 0.15 2.5 0.915 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 30 0 0 2 2 0 0.05 0.05 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 30 0 0.6 0.04 1 0.3 0 END PWAT-PARM4 MON-LZETPARM <PLS > PWATER input info: Part 3 *** # - # JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC *** 30 0.4 0.4 0.4 0.4 0.6 0.6 0.6 0.6 0.6 0.4 0.4 0.4 END MON-LZETPARM MON-INTERCEP <PLS > PWATER input info: Part 3 *** # - # JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC *** 30 0.1 0.1 0.1 0.1 0.06 0.06 0.06 0.06 0.06 0.1 0.1 0.1 END MON-INTERCEP PWAT-STATE1 <PLS > *** Initial conditions at start of simulation ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 *** # - # *** CEPS SURS UZS IFWS LZS AGWS GWVS 30 0 0 0.01 0 0.4 0.01 0 END PWAT-STATE1 END PERLND IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - #User t-series Engl Metr *** in out *** END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* END PRINT-INFO IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** # - # CSNO RTOP VRS VNN RTLI *** END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC END IWAT-PARM2 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 40 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS END IWAT-STATE1 END IMPLND SCHEMATIC <-Source-><--Area--> <-Target-> MBLK *** <Name> #<-factor-> <Name> # Tbl# *** Basin 1*** PERLND 30 0.7119 COPY 501 12 ******Routing****** END SCHEMATIC NETWORK <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** COPY 501 OUTPUT MEAN 1 1 12.1 DISPLY 1 INPUT TIMSER 1 <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** END NETWORK RCHRES GEN-INFO RCHRES Name Nexits Unit Systems Printer *** # - #<------------------><---> User T-series Engl Metr LKFG *** in out *** END GEN-INFO *** Section RCHRES*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* END PRINT-INFO HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** END HYDR-PARM1 HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** END HYDR-PARM2 HYDR-INIT RCHRES Initial conditions for each HYDR section *** # - # *** VOL Initial value of COLIND Initial value of OUTDGT *** ac-ft for each possible exit for each possible exit <------><--------> <---><---><---><---><---> *** <---><---><---><---><---> END HYDR-INIT END RCHRES SPEC-ACTIONS Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 41 END SPEC-ACTIONS FTABLES END FTABLES EXT SOURCES <-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # *** WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC WDM 1 EVAP ENGL 1 PERLND 1 999 EXTNL PETINP WDM 1 EVAP ENGL 1 IMPLND 1 999 EXTNL PETINP END EXT SOURCES EXT TARGETS <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd *** <Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg*** COPY 501 OUTPUT MEAN 1 1 12.1 WDM 501 FLOW ENGL REPL END EXT TARGETS MASS-LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->*** <Name> <Name> # #<-factor-> <Name> <Name> # #*** MASS-LINK 12 PERLND PWATER SURO 0.083333 COPY INPUT MEAN END MASS-LINK 12 END MASS-LINK END RUN Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 42 Mitigated UCI File RUN GLOBAL WWHM4 model simulation START 1959 10 01 END 2004 09 30 RUN INTERP OUTPUT LEVEL 3 0 RESUME 0 RUN 1 UNIT SYSTEM 1 END GLOBAL FILES <File> <Un#> <-----------File Name------------------------------>*** <-ID-> *** WDM 26 Romeria Pointe.wdm MESSU 25 MitRomeria Pointe.MES 27 MitRomeria Pointe.L61 28 MitRomeria Pointe.L62 30 POCRomeria Pointe1.dat END FILES OPN SEQUENCE INGRP INDELT 00:60 PERLND 46 IMPLND 1 PERLND 48 GENER 2 RCHRES 1 RCHRES 2 GENER 4 RCHRES 3 RCHRES 4 GENER 6 RCHRES 5 RCHRES 6 GENER 8 RCHRES 7 RCHRES 8 COPY 1 COPY 501 COPY 601 DISPLY 1 END INGRP END OPN SEQUENCE DISPLY DISPLY-INFO1 # - #<----------Title----------->***TRAN PIVL DIG1 FIL1 PYR DIG2 FIL2 YRND 1 Surface BMP-1 MAX 1 2 30 9 END DISPLY-INFO1 END DISPLY COPY TIMESERIES # - # NPT NMN *** 1 1 1 501 1 1 601 1 1 END TIMESERIES END COPY GENER OPCODE # # OPCD *** 2 24 4 24 6 24 8 24 END OPCODE PARM # # K *** 2 0. 4 0. Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 43 6 0. 8 0. END PARM END GENER PERLND GEN-INFO <PLS ><-------Name------->NBLKS Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 46 D,Urban,Flat 1 1 1 1 27 0 48 D,Urban,Steep 1 1 1 1 27 0 END GEN-INFO *** Section PWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC *** 46 0 0 1 0 0 0 0 0 0 0 0 0 48 0 0 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ***************************** PIVL PYR # - # ATMP SNOW PWAT SED PST PWG PQAL MSTL PEST NITR PHOS TRAC ********* 46 0 0 4 0 0 0 0 0 0 0 0 0 1 9 48 0 0 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO PWAT-PARM1 <PLS > PWATER variable monthly parameter value flags *** # - # CSNO RTOP UZFG VCS VUZ VNN VIFW VIRC VLE INFC HWT *** 46 0 1 1 1 0 0 0 0 1 1 0 48 0 1 1 1 0 0 0 0 1 1 0 END PWAT-PARM1 PWAT-PARM2 <PLS > PWATER input info: Part 2 *** # - # ***FOREST LZSN INFILT LSUR SLSUR KVARY AGWRC 46 0 3.8 0.03 50 0.05 2.5 0.915 48 0 3.2 0.02 50 0.15 2.5 0.915 END PWAT-PARM2 PWAT-PARM3 <PLS > PWATER input info: Part 3 *** # - # ***PETMAX PETMIN INFEXP INFILD DEEPFR BASETP AGWETP 46 0 0 2 2 0 0.05 0.05 48 0 0 2 2 0 0.05 0.05 END PWAT-PARM3 PWAT-PARM4 <PLS > PWATER input info: Part 4 *** # - # CEPSC UZSN NSUR INTFW IRC LZETP *** 46 0 0.6 0.03 1 0.3 0 48 0 0.6 0.03 1 0.3 0 END PWAT-PARM4 MON-LZETPARM <PLS > PWATER input info: Part 3 *** # - # JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC *** 46 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.7 0.6 0.6 0.6 48 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.7 0.6 0.6 0.6 END MON-LZETPARM MON-INTERCEP <PLS > PWATER input info: Part 3 *** # - # JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC *** 46 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 48 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 END MON-INTERCEP PWAT-STATE1 <PLS > *** Initial conditions at start of simulation ran from 1990 to end of 1992 (pat 1-11-95) RUN 21 *** Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 44 # - # *** CEPS SURS UZS IFWS LZS AGWS GWVS 46 0 0 0.15 0 1 0.05 0 48 0 0 0.15 0 1 0.05 0 END PWAT-STATE1 END PERLND IMPLND GEN-INFO <PLS ><-------Name-------> Unit-systems Printer *** # - # User t-series Engl Metr *** in out *** 1 IMPERVIOUS-FLAT 1 1 1 27 0 END GEN-INFO *** Section IWATER*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # ATMP SNOW IWAT SLD IWG IQAL *** 1 0 0 1 0 0 0 END ACTIVITY PRINT-INFO <ILS > ******** Print-flags ******** PIVL PYR # - # ATMP SNOW IWAT SLD IWG IQAL ********* 1 0 0 4 0 0 0 1 9 END PRINT-INFO IWAT-PARM1 <PLS > IWATER variable monthly parameter value flags *** # - # CSNO RTOP VRS VNN RTLI *** 1 0 0 0 0 1 END IWAT-PARM1 IWAT-PARM2 <PLS > IWATER input info: Part 2 *** # - # *** LSUR SLSUR NSUR RETSC 1 100 0.05 0.011 0.1 END IWAT-PARM2 IWAT-PARM3 <PLS > IWATER input info: Part 3 *** # - # ***PETMAX PETMIN 1 0 0 END IWAT-PARM3 IWAT-STATE1 <PLS > *** Initial conditions at start of simulation # - # *** RETS SURS 1 0 0 END IWAT-STATE1 END IMPLND SCHEMATIC <-Source-> <--Area--> <-Target-> MBLK *** <Name> # <-factor-> <Name> # Tbl# *** DMA-10*** PERLND 46 0.0102 RCHRES 1 2 PERLND 46 0.0102 RCHRES 1 3 IMPLND 1 0.1153 RCHRES 1 5 DMA-16*** PERLND 46 0.041 RCHRES 7 2 PERLND 46 0.041 RCHRES 7 3 IMPLND 1 0.3242 RCHRES 7 5 DMA-12*** PERLND 46 0.0032 RCHRES 5 2 PERLND 46 0.0032 RCHRES 5 3 IMPLND 1 0.0079 RCHRES 5 5 DMA-18*** Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 45 IMPLND 1 0.0014 RCHRES 7 5 DMA-11*** PERLND 46 0.0017 RCHRES 3 2 PERLND 46 0.0017 RCHRES 3 3 IMPLND 1 0.0536 RCHRES 3 5 DMA-14*** PERLND 46 0.0103 COPY 501 12 PERLND 46 0.0103 COPY 601 12 DMA-15*** PERLND 48 0.074 COPY 501 12 PERLND 48 0.074 COPY 601 12 IMPLND 1 0.002 COPY 501 15 IMPLND 1 0.002 COPY 601 15 DMA-17*** PERLND 48 0.0311 COPY 501 12 PERLND 48 0.0311 COPY 601 12 IMPLND 1 0.0019 COPY 501 15 IMPLND 1 0.0019 COPY 601 15 DMA-19*** PERLND 46 0.0029 COPY 501 12 PERLND 46 0.0029 COPY 601 12 DMA-20*** PERLND 46 0.0011 COPY 501 12 PERLND 46 0.0011 COPY 601 12 ******Routing****** PERLND 46 0.0102 COPY 1 12 IMPLND 1 0.1153 COPY 1 15 PERLND 46 0.0102 COPY 1 13 PERLND 46 0.041 COPY 1 12 IMPLND 1 0.3242 COPY 1 15 PERLND 46 0.041 COPY 1 13 PERLND 46 0.0032 COPY 1 12 IMPLND 1 0.0079 COPY 1 15 PERLND 46 0.0032 COPY 1 13 IMPLND 1 0.0014 COPY 1 15 PERLND 46 0.0017 COPY 1 12 IMPLND 1 0.0536 COPY 1 15 PERLND 46 0.0017 COPY 1 13 RCHRES 1 1 RCHRES 2 8 RCHRES 3 1 RCHRES 4 8 RCHRES 7 1 RCHRES 8 8 RCHRES 5 1 RCHRES 6 8 RCHRES 2 1 COPY 501 16 RCHRES 1 1 COPY 501 17 RCHRES 4 1 COPY 501 16 RCHRES 3 1 COPY 501 17 RCHRES 8 1 COPY 501 16 RCHRES 7 1 COPY 501 17 RCHRES 6 1 COPY 501 16 RCHRES 5 1 COPY 501 17 END SCHEMATIC NETWORK <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** COPY 501 OUTPUT MEAN 1 1 12.1 DISPLY 1 INPUT TIMSER 1 GENER 2 OUTPUT TIMSER .0002778 RCHRES 1 EXTNL OUTDGT 1 GENER 4 OUTPUT TIMSER .0002778 RCHRES 3 EXTNL OUTDGT 1 GENER 6 OUTPUT TIMSER .0002778 RCHRES 5 EXTNL OUTDGT 1 GENER 8 OUTPUT TIMSER .0002778 RCHRES 7 EXTNL OUTDGT 1 <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # #<-factor->strg <Name> # # <Name> # # *** END NETWORK RCHRES GEN-INFO Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 46 RCHRES Name Nexits Unit Systems Printer *** # - #<------------------><---> User T-series Engl Metr LKFG *** in out *** 1 Surface BMP-1 2 1 1 1 28 0 1 2 BMP-1 1 1 1 1 28 0 1 3 Surface BMP-2 2 1 1 1 28 0 1 4 BMP-2 1 1 1 1 28 0 1 5 Surface BMP-4 2 1 1 1 28 0 1 6 BMP-4 1 1 1 1 28 0 1 7 Surface BMP-3 2 1 1 1 28 0 1 8 BMP-3 1 1 1 1 28 0 1 END GEN-INFO *** Section RCHRES*** ACTIVITY <PLS > ************* Active Sections ***************************** # - # HYFG ADFG CNFG HTFG SDFG GQFG OXFG NUFG PKFG PHFG *** 1 1 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 3 1 0 0 0 0 0 0 0 0 0 4 1 0 0 0 0 0 0 0 0 0 5 1 0 0 0 0 0 0 0 0 0 6 1 0 0 0 0 0 0 0 0 0 7 1 0 0 0 0 0 0 0 0 0 8 1 0 0 0 0 0 0 0 0 0 END ACTIVITY PRINT-INFO <PLS > ***************** Print-flags ******************* PIVL PYR # - # HYDR ADCA CONS HEAT SED GQL OXRX NUTR PLNK PHCB PIVL PYR ********* 1 4 0 0 0 0 0 0 0 0 0 1 9 2 4 0 0 0 0 0 0 0 0 0 1 9 3 4 0 0 0 0 0 0 0 0 0 1 9 4 4 0 0 0 0 0 0 0 0 0 1 9 5 4 0 0 0 0 0 0 0 0 0 1 9 6 4 0 0 0 0 0 0 0 0 0 1 9 7 4 0 0 0 0 0 0 0 0 0 1 9 8 4 0 0 0 0 0 0 0 0 0 1 9 END PRINT-INFO HYDR-PARM1 RCHRES Flags for each HYDR Section *** # - # VC A1 A2 A3 ODFVFG for each *** ODGTFG for each FUNCT for each FG FG FG FG possible exit *** possible exit possible exit * * * * * * * * * * * * * * *** 1 0 1 0 0 4 5 0 0 0 0 1 0 0 0 2 1 2 2 2 2 0 1 0 0 4 0 0 0 0 0 0 0 0 0 2 2 2 2 2 3 0 1 0 0 4 5 0 0 0 0 1 0 0 0 2 1 2 2 2 4 0 1 0 0 4 0 0 0 0 0 0 0 0 0 2 2 2 2 2 5 0 1 0 0 4 5 0 0 0 0 1 0 0 0 2 1 2 2 2 6 0 1 0 0 4 0 0 0 0 0 0 0 0 0 2 2 2 2 2 7 0 1 0 0 4 5 0 0 0 0 1 0 0 0 2 1 2 2 2 8 0 1 0 0 4 0 0 0 0 0 0 0 0 0 2 2 2 2 2 END HYDR-PARM1 HYDR-PARM2 # - # FTABNO LEN DELTH STCOR KS DB50 *** <------><--------><--------><--------><--------><--------><--------> *** 1 1 0.01 0.0 89.58 0.0 0.0 2 2 0.01 0.0 89.58 0.0 0.0 3 3 0.01 0.0 79.25 0.0 0.0 4 4 0.01 0.0 79.25 0.0 0.0 5 5 0.01 0.0 66.0 0.0 0.0 6 6 0.01 0.0 66.0 0.0 0.0 7 7 0.01 0.0 60.05 0.0 0.0 8 8 0.02 0.0 60.05 0.0 0.0 END HYDR-PARM2 HYDR-INIT RCHRES Initial conditions for each HYDR section *** # - # *** VOL Initial value of COLIND Initial value of OUTDGT Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 47 *** ac-ft for each possible exit for each possible exit <------><--------> <---><---><---><---><---> *** <---><---><---><---><---> 1 0 4.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 2 0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 3 0 4.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4 0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 5 0 4.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 6 0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 7 0 4.0 5.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 8 0 4.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 END HYDR-INIT END RCHRES SPEC-ACTIONS *** User-Defined Variable Quantity Lines *** addr *** <------> *** kwd varnam optyp opn vari s1 s2 s3 tp multiply lc ls ac as agfn *** <****> <----> <----> <-> <----><-><-><-><-><--------> <><-> <><-> <--> *** UVQUAN vol2 RCHRES 2 VOL 4 UVQUAN v2m2 GLOBAL WORKSP 1 3 UVQUAN vpo2 GLOBAL WORKSP 2 3 UVQUAN v2d2 GENER 2 K 1 3 *** User-Defined Variable Quantity Lines *** addr *** <------> *** kwd varnam optyp opn vari s1 s2 s3 tp multiply lc ls ac as agfn *** <****> <----> <----> <-> <----><-><-><-><-><--------> <><-> <><-> <--> *** UVQUAN vol4 RCHRES 4 VOL 4 UVQUAN v2m4 GLOBAL WORKSP 3 3 UVQUAN vpo4 GLOBAL WORKSP 4 3 UVQUAN v2d4 GENER 4 K 1 3 *** User-Defined Variable Quantity Lines *** addr *** <------> *** kwd varnam optyp opn vari s1 s2 s3 tp multiply lc ls ac as agfn *** <****> <----> <----> <-> <----><-><-><-><-><--------> <><-> <><-> <--> *** UVQUAN vol6 RCHRES 6 VOL 4 UVQUAN v2m6 GLOBAL WORKSP 5 3 UVQUAN vpo6 GLOBAL WORKSP 6 3 UVQUAN v2d6 GENER 6 K 1 3 *** User-Defined Variable Quantity Lines *** addr *** <------> *** kwd varnam optyp opn vari s1 s2 s3 tp multiply lc ls ac as agfn *** <****> <----> <----> <-> <----><-><-><-><-><--------> <><-> <><-> <--> *** UVQUAN vol8 RCHRES 8 VOL 4 UVQUAN v2m8 GLOBAL WORKSP 7 3 UVQUAN vpo8 GLOBAL WORKSP 8 3 UVQUAN v2d8 GENER 8 K 1 3 *** User-Defined Target Variable Names *** addr or addr or *** <------> <------> *** kwd varnam ct vari s1 s2 s3 frac oper vari s1 s2 s3 frac oper <****> <----><-> <----><-><-><-> <---> <--> <----><-><-><-> <---> <--> UVNAME v2m2 1 WORKSP 1 1.0 QUAN UVNAME vpo2 1 WORKSP 2 1.0 QUAN UVNAME v2d2 1 K 1 1.0 QUAN *** User-Defined Target Variable Names *** addr or addr or *** <------> <------> *** kwd varnam ct vari s1 s2 s3 frac oper vari s1 s2 s3 frac oper <****> <----><-> <----><-><-><-> <---> <--> <----><-><-><-> <---> <--> UVNAME v2m4 1 WORKSP 3 1.0 QUAN UVNAME vpo4 1 WORKSP 4 1.0 QUAN UVNAME v2d4 1 K 1 1.0 QUAN *** User-Defined Target Variable Names *** addr or addr or *** <------> <------> *** kwd varnam ct vari s1 s2 s3 frac oper vari s1 s2 s3 frac oper Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 48 <****> <----><-> <----><-><-><-> <---> <--> <----><-><-><-> <---> <--> UVNAME v2m6 1 WORKSP 5 1.0 QUAN UVNAME vpo6 1 WORKSP 6 1.0 QUAN UVNAME v2d6 1 K 1 1.0 QUAN *** User-Defined Target Variable Names *** addr or addr or *** <------> <------> *** kwd varnam ct vari s1 s2 s3 frac oper vari s1 s2 s3 frac oper <****> <----><-> <----><-><-><-> <---> <--> <----><-><-><-> <---> <--> UVNAME v2m8 1 WORKSP 7 1.0 QUAN UVNAME vpo8 1 WORKSP 8 1.0 QUAN UVNAME v2d8 1 K 1 1.0 QUAN *** opt foplop dcdts yr mo dy hr mn d t vnam s1 s2 s3 ac quantity tc ts rp <****><-><--><><-><--> <> <> <> <><><> <----><-><-><-><-><--------> <> <-><-> GENER 2 v2m2 = 725.88 *** Compute remaining available pore space GENER 2 vpo2 = v2m2 GENER 2 vpo2 -= vol2 *** Check to see if VPORA goes negative; if so set VPORA = 0.0 IF (vpo2 < 0.0) THEN GENER 2 vpo2 = 0.0 END IF *** Infiltration volume GENER 2 v2d2 = vpo2 *** opt foplop dcdts yr mo dy hr mn d t vnam s1 s2 s3 ac quantity tc ts rp <****><-><--><><-><--> <> <> <> <><><> <----><-><-><-><-><--------> <> <-><-> GENER 4 v2m4 = 561.67 *** Compute remaining available pore space GENER 4 vpo4 = v2m4 GENER 4 vpo4 -= vol4 *** Check to see if VPORA goes negative; if so set VPORA = 0.0 IF (vpo4 < 0.0) THEN GENER 4 vpo4 = 0.0 END IF *** Infiltration volume GENER 4 v2d4 = vpo4 *** opt foplop dcdts yr mo dy hr mn d t vnam s1 s2 s3 ac quantity tc ts rp <****><-><--><><-><--> <> <> <> <><><> <----><-><-><-><-><--------> <> <-><-> GENER 6 v2m6 = 63.03 *** Compute remaining available pore space GENER 6 vpo6 = v2m6 GENER 6 vpo6 -= vol6 *** Check to see if VPORA goes negative; if so set VPORA = 0.0 IF (vpo6 < 0.0) THEN GENER 6 vpo6 = 0.0 END IF *** Infiltration volume GENER 6 v2d6 = vpo6 *** opt foplop dcdts yr mo dy hr mn d t vnam s1 s2 s3 ac quantity tc ts rp <****><-><--><><-><--> <> <> <> <><><> <----><-><-><-><-><--------> <> <-><-> GENER 8 v2m8 = 1630.55 *** Compute remaining available pore space GENER 8 vpo8 = v2m8 GENER 8 vpo8 -= vol8 *** Check to see if VPORA goes negative; if so set VPORA = 0.0 IF (vpo8 < 0.0) THEN GENER 8 vpo8 = 0.0 END IF *** Infiltration volume GENER 8 v2d8 = vpo8 END SPEC-ACTIONS FTABLES FTABLE 2 75 4 Depth Area Volume Outflow1 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (ft/sec) (Minutes)*** 0.000000 0.007461 0.000000 0.000000 0.077802 0.007461 0.000174 0.000000 0.155604 0.007461 0.000348 0.000000 0.233407 0.007461 0.000522 0.000000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 49 0.311209 0.007461 0.000697 0.000000 0.389011 0.007461 0.000871 0.000000 0.466813 0.007461 0.001045 0.000000 0.544615 0.007461 0.001219 0.000000 0.622418 0.007461 0.001393 0.000000 0.700220 0.007461 0.001567 0.000000 0.778022 0.007461 0.001741 0.000000 0.855824 0.007461 0.001916 0.000000 0.933626 0.007461 0.002090 0.000000 1.011429 0.007461 0.002264 0.000000 1.089231 0.007461 0.002438 0.000201 1.167033 0.007461 0.002612 0.000304 1.244835 0.007461 0.002786 0.000355 1.322637 0.007461 0.002960 0.000441 1.400440 0.007461 0.003135 0.000485 1.478242 0.007461 0.003309 0.000555 1.556044 0.007461 0.003483 0.000591 1.633846 0.007461 0.003657 0.000651 1.711648 0.007461 0.003831 0.000681 1.789451 0.007461 0.004072 0.000733 1.867253 0.007461 0.004313 0.000760 1.945055 0.007461 0.004554 0.000807 2.022857 0.007461 0.004795 0.000831 2.100659 0.007461 0.005036 0.000875 2.178462 0.007461 0.005277 0.000897 2.256264 0.007461 0.005517 0.000937 2.334066 0.007461 0.005758 0.000958 2.411868 0.007461 0.005999 0.001048 2.489670 0.007461 0.006240 0.001093 2.567473 0.007461 0.006481 0.001163 2.645275 0.007461 0.006722 0.001243 2.723077 0.007461 0.006963 0.001323 2.800879 0.007461 0.007204 0.001403 2.878681 0.007461 0.007445 0.001480 2.956484 0.007461 0.007686 0.001553 3.034286 0.007461 0.007926 0.001624 3.112088 0.007461 0.008167 0.001692 3.189890 0.007461 0.008408 0.001757 3.267692 0.007461 0.008649 0.001820 3.345495 0.007461 0.008890 0.001881 3.423297 0.007461 0.009131 0.001940 3.501099 0.007461 0.009372 0.001997 3.578901 0.007461 0.009613 0.002053 3.656703 0.007461 0.009854 0.002107 3.734505 0.007461 0.010095 0.002159 3.812308 0.007461 0.010335 0.002211 3.890110 0.007461 0.010576 0.002261 3.967912 0.007461 0.010817 0.002310 4.045714 0.007461 0.011058 0.002358 4.123516 0.007461 0.011299 0.002406 4.201319 0.007461 0.011540 0.002452 4.279121 0.007461 0.011781 0.002497 4.356923 0.007461 0.012022 0.002542 4.434725 0.007461 0.012263 0.002586 4.512527 0.007461 0.012504 0.002629 4.590330 0.007461 0.012744 0.002671 4.668132 0.007461 0.012985 0.002713 4.745934 0.007461 0.013226 0.002754 4.823736 0.007461 0.013467 0.002795 4.901538 0.007461 0.013708 0.002835 4.979341 0.007461 0.013949 0.002874 5.057143 0.007461 0.014190 0.002913 5.134945 0.007461 0.014431 0.002951 5.212747 0.007461 0.014672 0.002989 5.290549 0.007461 0.014913 0.003027 5.368352 0.007461 0.015153 0.003064 5.446154 0.007461 0.015394 0.003100 5.523956 0.007461 0.015635 0.003136 5.601758 0.007461 0.015876 0.003172 5.679560 0.007461 0.016117 0.003208 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 50 5.750000 0.007461 0.016664 0.003978 END FTABLE 2 FTABLE 1 19 5 Depth Area Volume Outflow1 Outflow2 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (cfs) (ft/sec) (Minutes)*** 0.000000 0.007461 0.000000 0.000000 0.000000 0.077802 0.007461 0.000580 0.000000 0.037616 0.155604 0.007461 0.001161 0.000000 0.047787 0.233407 0.007461 0.001741 0.000000 0.049738 0.311209 0.007461 0.002322 0.000000 0.051689 0.389011 0.007461 0.002902 0.000000 0.053640 0.466813 0.007461 0.003483 0.000000 0.055591 0.544615 0.007461 0.004063 0.000000 0.057542 0.622418 0.007461 0.004644 0.000000 0.059494 0.700220 0.007461 0.005224 0.000000 0.061445 0.778022 0.007461 0.005805 0.000000 0.063396 0.855824 0.007461 0.006385 0.088095 0.065347 0.933626 0.007461 0.006966 0.706964 0.067298 1.011429 0.007461 0.007546 1.632310 0.069249 1.089231 0.007461 0.008127 2.766272 0.071200 1.167033 0.007461 0.008707 4.042154 0.073151 1.244835 0.007461 0.009288 5.395579 0.075102 1.322637 0.007461 0.009868 6.760228 0.077053 1.330000 0.007461 0.009923 8.069861 0.077238 END FTABLE 1 FTABLE 4 75 4 Depth Area Volume Outflow1 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (ft/sec) (Minutes)*** 0.000000 0.005739 0.000000 0.000000 0.077802 0.005739 0.000134 0.000000 0.155604 0.005739 0.000268 0.000000 0.233407 0.005739 0.000402 0.000000 0.311209 0.005739 0.000536 0.000000 0.389011 0.005739 0.000670 0.000000 0.466813 0.005739 0.000804 0.000000 0.544615 0.005739 0.000938 0.000000 0.622418 0.005739 0.001072 0.000000 0.700220 0.005739 0.001206 0.000000 0.778022 0.005739 0.001340 0.000000 0.855824 0.005739 0.001474 0.000000 0.933626 0.005739 0.001607 0.000000 1.011429 0.005739 0.001741 0.000000 1.089231 0.005739 0.001875 0.000201 1.167033 0.005739 0.002009 0.000304 1.244835 0.005739 0.002143 0.000355 1.322637 0.005739 0.002277 0.000441 1.400440 0.005739 0.002411 0.000485 1.478242 0.005739 0.002545 0.000555 1.556044 0.005739 0.002679 0.000591 1.633846 0.005739 0.002813 0.000651 1.711648 0.005739 0.002947 0.000681 1.789451 0.005739 0.003132 0.000733 1.867253 0.005739 0.003318 0.000760 1.945055 0.005739 0.003503 0.000807 2.022857 0.005739 0.003688 0.000831 2.100659 0.005739 0.003874 0.000875 2.178462 0.005739 0.004059 0.000897 2.256264 0.005739 0.004244 0.000937 2.334066 0.005739 0.004430 0.000958 2.411868 0.005739 0.004615 0.001048 2.489670 0.005739 0.004800 0.001093 2.567473 0.005739 0.004985 0.001163 2.645275 0.005739 0.005171 0.001243 2.723077 0.005739 0.005356 0.001323 2.800879 0.005739 0.005541 0.001403 2.878681 0.005739 0.005727 0.001480 2.956484 0.005739 0.005912 0.001553 3.034286 0.005739 0.006097 0.001624 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 51 3.112088 0.005739 0.006283 0.001692 3.189890 0.005739 0.006468 0.001757 3.267692 0.005739 0.006653 0.001820 3.345495 0.005739 0.006839 0.001881 3.423297 0.005739 0.007024 0.001940 3.501099 0.005739 0.007209 0.001997 3.578901 0.005739 0.007394 0.002053 3.656703 0.005739 0.007580 0.002107 3.734505 0.005739 0.007765 0.002159 3.812308 0.005739 0.007950 0.002211 3.890110 0.005739 0.008136 0.002261 3.967912 0.005739 0.008321 0.002310 4.045714 0.005739 0.008506 0.002358 4.123516 0.005739 0.008692 0.002406 4.201319 0.005739 0.008877 0.002452 4.279121 0.005739 0.009062 0.002497 4.356923 0.005739 0.009247 0.002542 4.434725 0.005739 0.009433 0.002586 4.512527 0.005739 0.009618 0.002629 4.590330 0.005739 0.009803 0.002671 4.668132 0.005739 0.009989 0.002713 4.745934 0.005739 0.010174 0.002754 4.823736 0.005739 0.010359 0.002795 4.901538 0.005739 0.010545 0.002835 4.979341 0.005739 0.010730 0.002874 5.057143 0.005739 0.010915 0.002913 5.134945 0.005739 0.011101 0.002951 5.212747 0.005739 0.011286 0.002989 5.290549 0.005739 0.011471 0.003027 5.368352 0.005739 0.011656 0.003064 5.446154 0.005739 0.011842 0.003100 5.523956 0.005739 0.012027 0.003136 5.601758 0.005739 0.012212 0.003172 5.679560 0.005739 0.012398 0.003208 5.750000 0.005739 0.012894 0.003978 END FTABLE 4 FTABLE 3 19 5 Depth Area Volume Outflow1 Outflow2 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (cfs) (ft/sec) (Minutes)*** 0.000000 0.005739 0.000000 0.000000 0.000000 0.077802 0.005739 0.000447 0.000000 0.028935 0.155604 0.005739 0.000893 0.000000 0.036759 0.233407 0.005739 0.001340 0.000000 0.038260 0.311209 0.005739 0.001786 0.000000 0.039761 0.389011 0.005739 0.002233 0.000000 0.041262 0.466813 0.005739 0.002679 0.000000 0.042763 0.544615 0.005739 0.003126 0.001433 0.044263 0.622418 0.005739 0.003572 0.002374 0.045764 0.700220 0.005739 0.004019 0.003036 0.047265 0.778022 0.005739 0.004465 0.003577 0.048766 0.855824 0.005739 0.004912 0.092142 0.050267 0.933626 0.005739 0.005358 0.711432 0.051768 1.011429 0.005739 0.005805 1.637161 0.053268 1.089231 0.005739 0.006251 2.771480 0.054769 1.167033 0.005739 0.006698 4.047695 0.056270 1.244835 0.005739 0.007144 5.401434 0.057771 1.322637 0.005739 0.007591 6.766381 0.059272 1.330000 0.005739 0.007633 8.076298 0.059414 END FTABLE 3 FTABLE 8 75 4 Depth Area Volume Outflow1 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (ft/sec) (Minutes)*** 0.000000 0.016713 0.000000 0.000000 0.077802 0.016713 0.000390 0.000000 0.155604 0.016713 0.000780 0.000000 0.233407 0.016713 0.001170 0.000000 0.311209 0.016713 0.001560 0.000000 0.389011 0.016713 0.001950 0.000000 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 52 0.466813 0.016713 0.002340 0.000000 0.544615 0.016713 0.002731 0.000000 0.622418 0.016713 0.003121 0.000000 0.700220 0.016713 0.003511 0.000000 0.778022 0.016713 0.003901 0.000000 0.855824 0.016713 0.004291 0.000000 0.933626 0.016713 0.004681 0.000000 1.011429 0.016713 0.005071 0.000000 1.089231 0.016713 0.005461 0.000514 1.167033 0.016713 0.005851 0.000777 1.244835 0.016713 0.006241 0.000909 1.322637 0.016713 0.006631 0.001130 1.400440 0.016713 0.007021 0.001241 1.478242 0.016713 0.007412 0.001422 1.556044 0.016713 0.007802 0.001512 1.633846 0.016713 0.008192 0.001666 1.711648 0.016713 0.008582 0.001742 1.789451 0.016713 0.009121 0.001878 1.867253 0.016713 0.009661 0.001945 1.945055 0.016713 0.010201 0.002067 2.022857 0.016713 0.010740 0.002128 2.100659 0.016713 0.011280 0.002240 2.178462 0.016713 0.011820 0.002296 2.256264 0.016713 0.012359 0.002400 2.334066 0.016713 0.012899 0.002452 2.411868 0.016713 0.013438 0.002683 2.489670 0.016713 0.013978 0.002799 2.567473 0.016713 0.014518 0.002978 2.645275 0.016713 0.015057 0.003181 2.723077 0.016713 0.015597 0.003388 2.800879 0.016713 0.016136 0.003591 2.878681 0.016713 0.016676 0.003788 2.956484 0.016713 0.017216 0.003976 3.034286 0.016713 0.017755 0.004157 3.112088 0.016713 0.018295 0.004331 3.189890 0.016713 0.018834 0.004498 3.267692 0.016713 0.019374 0.004659 3.345495 0.016713 0.019914 0.004815 3.423297 0.016713 0.020453 0.004966 3.501099 0.016713 0.020993 0.005112 3.578901 0.016713 0.021533 0.005255 3.656703 0.016713 0.022072 0.005393 3.734505 0.016713 0.022612 0.005528 3.812308 0.016713 0.023151 0.005660 3.890110 0.016713 0.023691 0.005789 3.967912 0.016713 0.024231 0.005914 4.045714 0.016713 0.024770 0.006038 4.123516 0.016713 0.025310 0.006158 4.201319 0.016713 0.025849 0.006277 4.279121 0.016713 0.026389 0.006393 4.356923 0.016713 0.026929 0.006507 4.434725 0.016713 0.027468 0.006620 4.512527 0.016713 0.028008 0.006730 4.590330 0.016713 0.028548 0.006838 4.668132 0.016713 0.029087 0.006945 4.745934 0.016713 0.029627 0.007051 4.823736 0.016713 0.030166 0.007154 4.901538 0.016713 0.030706 0.007256 4.979341 0.016713 0.031246 0.007357 5.057143 0.016713 0.031785 0.007457 5.134945 0.016713 0.032325 0.007555 5.212747 0.016713 0.032864 0.007652 5.290549 0.016713 0.033404 0.007748 5.368352 0.016713 0.033944 0.007843 5.446154 0.016713 0.034483 0.007936 5.523956 0.016713 0.035023 0.008029 5.601758 0.016713 0.035563 0.008121 5.679560 0.016713 0.036102 0.008212 5.750000 0.016713 0.037432 0.010183 END FTABLE 8 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 53 FTABLE 7 19 5 Depth Area Volume Outflow1 Outflow2 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (cfs) (ft/sec) (Minutes)*** 0.000000 0.016713 0.000000 0.000000 0.000000 0.077802 0.016713 0.001300 0.000000 0.084259 0.155604 0.016713 0.002601 0.000000 0.107043 0.233407 0.016713 0.003901 0.000000 0.111414 0.311209 0.016713 0.005201 0.107420 0.115784 0.389011 0.016713 0.006501 0.161884 0.120154 0.466813 0.016713 0.007802 0.202172 0.124525 0.544615 0.016713 0.009102 0.235671 0.128895 0.622418 0.016713 0.010402 0.264968 0.133266 0.700220 0.016713 0.011702 0.291334 0.137636 0.778022 0.016713 0.013003 0.315504 0.142006 0.855824 0.016713 0.014303 0.426045 0.146377 0.933626 0.016713 0.015603 1.065959 0.150747 1.011429 0.016713 0.016904 2.011182 0.155117 1.089231 0.016713 0.018204 3.164031 0.159488 1.167033 0.016713 0.019504 4.457941 0.163858 1.244835 0.016713 0.020804 5.828645 0.168229 1.322637 0.016713 0.022105 7.209909 0.172599 1.330000 0.016713 0.022228 8.535565 0.173012 END FTABLE 7 FTABLE 6 73 4 Depth Area Volume Outflow1 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (ft/sec) (Minutes)*** 0.000000 0.000872 0.000000 0.000000 0.052198 0.000872 0.000014 0.000000 0.104396 0.000872 0.000027 0.000000 0.156593 0.000872 0.000041 0.000000 0.208791 0.000872 0.000055 0.000000 0.260989 0.000872 0.000068 0.000000 0.313187 0.000872 0.000082 0.000000 0.365385 0.000872 0.000096 0.000000 0.417582 0.000872 0.000109 0.000000 0.469780 0.000872 0.000123 0.000000 0.521978 0.000872 0.000137 0.000000 0.574176 0.000872 0.000150 0.000000 0.626374 0.000872 0.000164 0.000000 0.678571 0.000872 0.000178 0.000000 0.730769 0.000872 0.000191 0.000000 0.782967 0.000872 0.000205 0.000000 0.835165 0.000872 0.000219 0.000000 0.887363 0.000872 0.000232 0.000000 0.939560 0.000872 0.000246 0.000000 0.991758 0.000872 0.000260 0.000000 1.043956 0.000872 0.000273 0.000000 1.096154 0.000872 0.000287 0.000000 1.148352 0.000872 0.000301 0.000000 1.200549 0.000872 0.000314 0.000000 1.252747 0.000872 0.000328 0.000000 1.304945 0.000872 0.000342 0.000000 1.357143 0.000872 0.000355 0.000000 1.409341 0.000872 0.000369 0.000130 1.461538 0.000872 0.000382 0.000195 1.513736 0.000872 0.000396 0.000287 1.565934 0.000872 0.000410 0.000333 1.618132 0.000872 0.000423 0.000401 1.670330 0.000872 0.000437 0.000435 1.722527 0.000872 0.000451 0.000489 1.774725 0.000872 0.000470 0.000517 1.826923 0.000872 0.000489 0.000563 1.879121 0.000872 0.000507 0.000587 1.931319 0.000872 0.000526 0.000628 1.983516 0.000872 0.000545 0.000649 2.035714 0.000872 0.000564 0.000686 2.087912 0.000872 0.000583 0.000705 2.140110 0.000872 0.000602 0.000740 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 54 2.192308 0.000872 0.000621 0.000757 2.244505 0.000872 0.000640 0.000776 2.296703 0.000872 0.000659 0.000820 2.348901 0.000872 0.000678 0.000884 2.401099 0.000872 0.000696 0.000955 2.453297 0.000872 0.000715 0.001025 2.505495 0.000872 0.000734 0.001094 2.557692 0.000872 0.000753 0.001160 2.609890 0.000872 0.000772 0.001224 2.662088 0.000872 0.000791 0.001284 2.714286 0.000872 0.000810 0.001342 2.766484 0.000872 0.000829 0.001397 2.818681 0.000872 0.000848 0.001450 2.870879 0.000872 0.000867 0.001502 2.923077 0.000872 0.000885 0.001551 2.975275 0.000872 0.000904 0.001599 3.027473 0.000872 0.000923 0.001646 3.079670 0.000872 0.000942 0.001691 3.131868 0.000872 0.000961 0.001736 3.184066 0.000872 0.000980 0.001779 3.236264 0.000872 0.000999 0.001821 3.288462 0.000872 0.001018 0.001862 3.340659 0.000872 0.001037 0.001902 3.392857 0.000872 0.001056 0.001942 3.445055 0.000872 0.001074 0.001980 3.497253 0.000872 0.001093 0.002018 3.549451 0.000872 0.001112 0.002056 3.601648 0.000872 0.001131 0.002092 3.653846 0.000872 0.001150 0.002129 3.706044 0.000872 0.001169 0.002165 3.750000 0.000872 0.001447 0.003173 END FTABLE 6 FTABLE 5 21 5 Depth Area Volume Outflow1 Outflow2 Velocity Travel Time*** (ft) (acres) (acre-ft) (cfs) (cfs) (ft/sec) (Minutes)*** 0.000000 0.000872 0.000000 0.000000 0.000000 0.052198 0.000872 0.000046 0.000000 0.004398 0.104396 0.000872 0.000091 0.000000 0.005437 0.156593 0.000872 0.000137 0.000000 0.005590 0.208791 0.000872 0.000182 0.000000 0.005743 0.260989 0.000872 0.000228 0.000000 0.005896 0.313187 0.000872 0.000273 0.000000 0.006049 0.365385 0.000872 0.000319 0.000000 0.006203 0.417582 0.000872 0.000364 0.000000 0.006356 0.469780 0.000872 0.000410 0.000000 0.006509 0.521978 0.000872 0.000455 0.034569 0.006662 0.574176 0.000872 0.000501 0.213745 0.006815 0.626374 0.000872 0.000546 0.471194 0.006968 0.678571 0.000872 0.000592 0.775552 0.007121 0.730769 0.000872 0.000637 1.099144 0.007274 0.782967 0.000872 0.000683 1.413620 0.007427 0.835165 0.000872 0.000729 1.692395 0.007580 0.887363 0.000872 0.000774 1.915531 0.007733 0.939560 0.000872 0.000820 2.076126 0.007886 0.991758 0.000872 0.000865 2.187838 0.008039 1.000000 0.000872 0.000872 2.322958 0.008063 END FTABLE 5 END FTABLES EXT SOURCES <-Volume-> <Member> SsysSgap<--Mult-->Tran <-Target vols> <-Grp> <-Member-> *** <Name> # <Name> # tem strg<-factor->strg <Name> # # <Name> # # *** WDM 2 PREC ENGL 1 PERLND 1 999 EXTNL PREC WDM 2 PREC ENGL 1 IMPLND 1 999 EXTNL PREC WDM 1 EVAP ENGL 1 PERLND 1 999 EXTNL PETINP WDM 1 EVAP ENGL 1 IMPLND 1 999 EXTNL PETINP WDM 22 IRRG ENGL 0.7 SAME PERLND 46 EXTNL SURLI WDM 22 IRRG ENGL 0.7 SAME PERLND 48 EXTNL SURLI WDM 2 PREC ENGL 1 RCHRES 1 EXTNL PREC Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 55 WDM 2 PREC ENGL 1 RCHRES 3 EXTNL PREC WDM 2 PREC ENGL 1 RCHRES 5 EXTNL PREC WDM 2 PREC ENGL 1 RCHRES 7 EXTNL PREC WDM 1 EVAP ENGL 0.5 RCHRES 1 EXTNL POTEV WDM 1 EVAP ENGL 0.7 RCHRES 2 EXTNL POTEV WDM 1 EVAP ENGL 0.5 RCHRES 3 EXTNL POTEV WDM 1 EVAP ENGL 0.7 RCHRES 4 EXTNL POTEV WDM 1 EVAP ENGL 0.5 RCHRES 5 EXTNL POTEV WDM 1 EVAP ENGL 0.7 RCHRES 6 EXTNL POTEV WDM 1 EVAP ENGL 0.5 RCHRES 7 EXTNL POTEV WDM 1 EVAP ENGL 0.7 RCHRES 8 EXTNL POTEV END EXT SOURCES EXT TARGETS <-Volume-> <-Grp> <-Member-><--Mult-->Tran <-Volume-> <Member> Tsys Tgap Amd *** <Name> # <Name> # #<-factor->strg <Name> # <Name> tem strg strg*** COPY 1 OUTPUT MEAN 1 1 12.1 WDM 701 FLOW ENGL REPL COPY 501 OUTPUT MEAN 1 1 12.1 WDM 801 FLOW ENGL REPL COPY 601 OUTPUT MEAN 1 1 12.1 WDM 901 FLOW ENGL REPL RCHRES 2 HYDR RO 1 1 1 WDM 1012 FLOW ENGL REPL RCHRES 2 HYDR STAGE 1 1 1 WDM 1013 STAG ENGL REPL RCHRES 1 HYDR STAGE 1 1 1 WDM 1014 STAG ENGL REPL RCHRES 1 HYDR O 1 1 1 WDM 1015 FLOW ENGL REPL RCHRES 4 HYDR RO 1 1 1 WDM 1016 FLOW ENGL REPL RCHRES 4 HYDR STAGE 1 1 1 WDM 1017 STAG ENGL REPL RCHRES 3 HYDR STAGE 1 1 1 WDM 1018 STAG ENGL REPL RCHRES 3 HYDR O 1 1 1 WDM 1019 FLOW ENGL REPL RCHRES 8 HYDR RO 1 1 1 WDM 1020 FLOW ENGL REPL RCHRES 8 HYDR STAGE 1 1 1 WDM 1021 STAG ENGL REPL RCHRES 7 HYDR STAGE 1 1 1 WDM 1022 STAG ENGL REPL RCHRES 7 HYDR O 1 1 1 WDM 1023 FLOW ENGL REPL RCHRES 6 HYDR RO 1 1 1 WDM 1004 FLOW ENGL REPL RCHRES 6 HYDR STAGE 1 1 1 WDM 1005 STAG ENGL REPL RCHRES 5 HYDR STAGE 1 1 1 WDM 1006 STAG ENGL REPL RCHRES 5 HYDR O 1 1 1 WDM 1007 FLOW ENGL REPL END EXT TARGETS MASS-LINK <Volume> <-Grp> <-Member-><--Mult--> <Target> <-Grp> <-Member->*** <Name> <Name> # #<-factor-> <Name> <Name> # #*** MASS-LINK 2 PERLND PWATER SURO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 2 MASS-LINK 3 PERLND PWATER IFWO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 3 MASS-LINK 5 IMPLND IWATER SURO 0.083333 RCHRES INFLOW IVOL END MASS-LINK 5 MASS-LINK 8 RCHRES OFLOW OVOL 2 RCHRES INFLOW IVOL END MASS-LINK 8 MASS-LINK 12 PERLND PWATER SURO 0.083333 COPY INPUT MEAN END MASS-LINK 12 MASS-LINK 13 PERLND PWATER IFWO 0.083333 COPY INPUT MEAN END MASS-LINK 13 MASS-LINK 15 IMPLND IWATER SURO 0.083333 COPY INPUT MEAN END MASS-LINK 15 MASS-LINK 16 Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 56 RCHRES ROFLOW COPY INPUT MEAN END MASS-LINK 16 MASS-LINK 17 RCHRES OFLOW OVOL 1 COPY INPUT MEAN END MASS-LINK 17 END MASS-LINK END RUN Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 57 Predeveloped HSPF Message File Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 58 Mitigated HSPF Message File ERROR/WARNING ID: 238 1 The continuity error reported below is greater than 1 part in 1000 and is therefore considered high. Did you specify any "special actions"? If so, they could account for it. Relevant data are: DATE/TIME: 1962/12/31 24: 0 RCHRES : 3 RELERR STORS STOR MATIN MATDIF -4.200E-03 0.00000 0.0000E+00 0.00000 1.7361E-11 Where: RELERR is the relative error (ERROR/REFVAL). ERROR is (STOR-STORS) - MATDIF. REFVAL is the reference value (STORS+MATIN). STOR is the storage of material in the processing unit (land-segment or reach/reservior) at the end of the present interval. STORS is the storage of material in the pu at the start of the present printout reporting period. MATIN is the total inflow of material to the pu during the present printout reporting period. MATDIF is the net inflow (inflow-outflow) of material to the pu during the present printout reporting period. ERROR/WARNING ID: 238 1 The continuity error reported below is greater than 1 part in 1000 and is therefore considered high. Did you specify any "special actions"? If so, they could account for it. Relevant data are: DATE/TIME: 1974/ 4/30 24: 0 RCHRES : 3 RELERR STORS STOR MATIN MATDIF -3.806E-03 0.00000 0.0000E+00 0.00000 1.5659E-11 Where: RELERR is the relative error (ERROR/REFVAL). ERROR is (STOR-STORS) - MATDIF. REFVAL is the reference value (STORS+MATIN). STOR is the storage of material in the processing unit (land-segment or reach/reservior) at the end of the present interval. STORS is the storage of material in the pu at the start of the present printout reporting period. MATIN is the total inflow of material to the pu during the present printout reporting period. MATDIF is the net inflow (inflow-outflow) of material to the pu during the present printout reporting period. ERROR/WARNING ID: 238 1 The continuity error reported below is greater than 1 part in 1000 and is therefore considered high. Did you specify any "special actions"? If so, they could account for it. Relevant data are: Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 59 DATE/TIME: 1974/ 4/30 24: 0 RCHRES : 5 RELERR STORS STOR MATIN MATDIF -2.020E-03 0.00000 0.0000E+00 0.00000 1.5642E-11 Where: RELERR is the relative error (ERROR/REFVAL). ERROR is (STOR-STORS) - MATDIF. REFVAL is the reference value (STORS+MATIN). STOR is the storage of material in the processing unit (land-segment or reach/reservior) at the end of the present interval. STORS is the storage of material in the pu at the start of the present printout reporting period. MATIN is the total inflow of material to the pu during the present printout reporting period. MATDIF is the net inflow (inflow-outflow) of material to the pu during the present printout reporting period. ERROR/WARNING ID: 238 1 The continuity error reported below is greater than 1 part in 1000 and is therefore considered high. Did you specify any "special actions"? If so, they could account for it. Relevant data are: DATE/TIME: 1999/12/31 24: 0 RCHRES : 3 RELERR STORS STOR MATIN MATDIF -5.569E-03 0.00000 0.0000E+00 0.00000 1.2260E-11 Where: RELERR is the relative error (ERROR/REFVAL). ERROR is (STOR-STORS) - MATDIF. REFVAL is the reference value (STORS+MATIN). STOR is the storage of material in the processing unit (land-segment or reach/reservior) at the end of the present interval. STORS is the storage of material in the pu at the start of the present printout reporting period. MATIN is the total inflow of material to the pu during the present printout reporting period. MATDIF is the net inflow (inflow-outflow) of material to the pu during the present printout reporting period. ERROR/WARNING ID: 238 1 The continuity error reported below is greater than 1 part in 1000 and is therefore considered high. Did you specify any "special actions"? If so, they could account for it. Relevant data are: DATE/TIME: 1999/12/31 24: 0 RCHRES : 5 RELERR STORS STOR MATIN MATDIF -5.569E-03 0.00000 0.0000E+00 0.00000 2.3078E-11 Where: RELERR is the relative error (ERROR/REFVAL). ERROR is (STOR-STORS) - MATDIF. Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 60 REFVAL is the reference value (STORS+MATIN). STOR is the storage of material in the processing unit (land-segment or reach/reservior) at the end of the present interval. STORS is the storage of material in the pu at the start of the present printout reporting period. MATIN is the total inflow of material to the pu during the present printout reporting period. MATDIF is the net inflow (inflow-outflow) of material to the pu during the present printout reporting period. Attachment 2d: Flow Control Facility Design Romeria Pointe 1/3/2023 2:39:52 PM Page 61 Disclaimer Legal Notice This program and accompanying documentation are provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by End User. Clear Creek Solutions Inc. and the governmental licensee or sublicensees disclaim all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions Inc. be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions Inc. or their authorized representatives have been advised of the possibility of such damages. Software Copyright © by : Clear Creek Solutions, Inc. 2005-2023; All Rights Reserved. Clear Creek Solutions, Inc. 6200 Capitol Blvd. Ste F Olympia, WA. 98501 Toll Free 1(866)943-0304 Local (360)943-0304 www.clearcreeksolutions.com Attachment 2d: Flow Control Facility Design Romeria Pointe SWQMP March 24, 2023 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 Romeria Pointe SWQMP March 24, 2023 ATTACHMENT 3a Maintenance Plan (To be completed with final plans.) I. Inspection, Maintenance Log and Self-Verification Forms Bio-Filtration planters are BMPs that have minimal maintenance responsibilities and are typical for residential land uses. The proposed BMPs inherently "take care of themselves", or property owners can naturally be expected to do so as an incident of taking care of their property.) The Property Owner will be responsible for maintenance of the BMPs and will provide annual documentation to the County verifying that the BMPs are maintained and functioning properly. The Property Owner is to use the “Private Treatment Control BMP Operation and Maintenance Verification Form” included at the back of this Attachment. II. Updates, Revisions and Errata This maintenance plan is a “living document” and must be kept up-to-date. As such, this plan must be updated whenever changes or revisions are made in the parties responsible for operation and maintenance of the BMPs and/or it is determined that additional maintenance procedures are needed. Any updates or revisions to the maintenance plan must accompany the annual inspection report when it is transmitted to the county. III. Introduction A. Narrative overview describing the site; drainage areas, routing, and discharge points; and treatment facilities. The project consists of the construction of a residential apartment project. The project includes four Treatment Control/LID BMP’s which is shown in Section V.B.(2) below. The developed project will include an on-site storm drain system that will convey storm water runoff from the site to Gibraltar Street. The system will include an overflow inlet from the four bio-filtration planters as well as connections to the sub-drain under the bio-filtration media in each planter. IV. Responsibility for Maintenance B. General (1) Name and contact information for responsible individual(s). The Property Owner for the project will be responsible for the maintenance of the Bio- Filtration planters treating the flows from the proposed development. The Property Owner will be responsible for maintaining records, filing annual reports and ensuring that the required maintenance is performed. At the current time, the contact party is: BNR INVESTMENT & DEVELOPMENT, LLC 23800 VIA DEL RIO YORBA LINDA, CA 92887 (714) 692-9120 If the project ownership is transferred, the responsibilities outlined herein will be transferred to the new owners. (2) Operation and Maintenance Agreement. The maintenance agreement between the property owner and the City is included at the back of this Attachment. (3) Maintenance Funding i. Sources of funds for maintenance The funding for the annual maintenance of the BMP’s will be provided by the Property Owner. ii. Budget category or line item The maintenance for the BMPs will be part of the annual maintenance budget for the Property Owner. iii. Description of procedure and process for ensuring adequate funding for maintenance: The funding will be provided by the Property Owner. C. Records Romeria Pointe SWQMP March 24, 2023 All records for the maintenance and operation of the BMPs will be kept by the Property Owner. D. Safety All employees and/or contractors hired by the Property Owner to perform maintenance on the BMPs will have adequate safety training and follow all CAL/OSHA guidelines. V. Summary of Drainage Areas and Stormwater Facilities A. Drainage Areas (1) Drawings showing pervious and impervious areas (copied or adapted from initial SWQMP). Attachment 1a – DMA Exhibit from the SWQMP shows the location of the BMPs. The exhibit also indicates the pervious and impervious areas which are draining into the BMPs. B. Treatment and Flow-Control Facilities (1) Drawings showing location and type of each facility Attachment 1a – DMA Exhibit from the SWQMP shows the location of the BMPs. The exhibit also indicates the pervious and impervious areas which are draining into the BMP. (2) General description of each facility (Consider a table if more than two facilities) BMP Description* BMP-1 Biofiltration planter located s’ly of Building A. BMP-2 Biofiltration planter located n’ly of Building A. BMP-3 Biofiltration planter located n’ly of Building B. BMP-4 Biofiltration Planter located on the north side of Building B driveway. * For location of BMP’s, see approved Record Plan dated , plan VI. Facility Documentation A. “As-built” drawings of each facility “As-built” drawings of the BMPs will be kept with the Maintenance Plan after the project is constructed. VII. Maintenance Schedule or Matrix A. Maintenance Schedule for each facility with specific requirements for annual, routine, and after major storm events inspection & maintenance: Maintenance Schedule or Matrix Bio-Filtration Planters (Bio-Retention with Underdrains) Inspection and Maintenance Matrix Frequency Maintenance Actions Bi-weekly as part of routine landscape maintenance. Inspect BMPs. • Examine the vegetation to ensure that it is healthy and dense enough to provide filtering. Replace dead plants and remove noxious and invasive vegetation. • Replenish mulch as necessary, remove fallen leaves and debris. • Trim plants as appropriate. • Confirm that irrigation is adequate and not excessive and that sprays do not directly enter overflow grate. • Remove and properly dispose of accumulated materials, without damage to the vegetation. • Repair/re-seed eroded areas and make appropriate corrective measures such as adding erosion control blankets, adding stone at flow entry points, or re-grading where necessary. Abate any potential vectors by filling holes in the ground in the facility and by insuring that there are no areas where water stands longer than 48 hours following a storm ends. Quarterly • Inspect drain inserts in overflow drains. • Empty any accumulated trash or debris from the filter insert, and dispose of properly. • Repair or replace damaged inserts. Romeria Pointe SWQMP March 24, 2023 PRIVATE TREATMENT CONTROL BMP OPERATION AND MAINTENANCE VERIFICATION FORM BIOFILTRATION FACILITIES, VEGETATED SWALES & HIGHER RATE BIOFILTERS 1. Transcribe the following information from your notification letter and make corrections as necessary: Permit No.:___________________________________________________________________ BMP Location:________________________________________________________________ Responsible Party:____________________________________________________________ Phone Number: (___ )___________________ Email: ________________________________ Responsible Party Address:____________________________________________________ Number Street Name & Suffix City/Zip Check here for Address/Phone Number Change 2. Using the Table below, please describe the inspections and maintenance activities that have been conducted during the fiscal year (July 1 – June 30), and date(s) maintenance was performed. Under “Results of Inspection,” indicate whether maintenance was required based on each inspection, and if so, what type of maintenance. If maintenance was required, provide the date maintenance was conducted and a description of the maintenance. REFER TO SIDE 2 OF THIS SHEET FOR MORE INFORMATION DESCRIBING TYPICAL MAINTENANCE INDICATORS AND MAINTENANCE ACTIVITIES. If no maintenance was required based on the inspection results, state “no maintenance required.” What to look For? Date Inspected Results of Inspection: Work needed? (yes/no) Date Maintenance Completed and Description of Maintenance Conducted Accumulation of Sediment, Litter, Grease Standing Water Erosion Overgrown Vegetation Poor Vegetation Establishment Structural Damage 3. Attach copies of available supporting documents (photographs, copies of maintenance contracts, and/or maintenance records). 4. Sign the bottom of the form and keep on file: _________________________________________________________________ Signature of Responsible Party Print Name Date Romeria Pointe SWQMP March 24, 2023 PRIVATE TREATMENT CONTROL BMP OPERATION AND MAINTENANCE VERIFICATION FORM BIOFILTRATION FACILITIES, VEGETATED SWALES & HIGHER RATE BIOFILTERS-SIDE 2 This guide sheet provides general indicators for maintenance only and for a wide array of treatment control BMPs. Your developer prepared maintenance plans specifically for your treatment control BMP as an appendix to the Stormwater Management Plan. Also, if you have a manufactured structure, please refer to the manufacturer’s maintenance instructions. Biofilters Include: Vegetated Filter Strip Vegetated Swale Bioretention Facility Planter Boxes Manufactured Higher-Flow-Rate Biofilters, such as Tree-Pit-Style Units. Routine maintenance is needed to ensure that flow is unobstructed, that erosion is prevented, and that soils are held together by plant roots and are biologically active. Typical maintenance consists of the following: Bioretention BMPs Inspection and Maintenance Checklist Typical Maintenance Indicators Typical Maintenance Actions Accumulation of sediment (over 2 inches deep or covers vegetation), litter, or debris Remove and properly dispose of accumulated materials, without damage to the vegetation. Confirm that soil is not clogging and that the area drains after a storm event. Till or replace soil as necessary. Poor vegetation establishment Ensure vegetation is healthy and dense enough to provide filtering and to protect soils from erosion. Replenish mulch as necessary (if less than 3 inches deep), remove fallen leaves and debris, prune large shrubs or trees, and mow turf areas. Overgrown vegetation—woody vegetation not part of design is present and grass excessively tall (greater than 10 inches) Mow or trim as appropriate, but not less than the design height of the vegetation (typically 4-6 inches for grass). Confirm that irrigation is adequate and not excessive and that sprays do not directly enter overflow grates. Replace dead plants and remove noxious and invasive weeds Erosion due to concentrated irrigation flow Repair/re-seed eroded areas and adjust the irrigation. Erosion due to concentrated stormwater runoff flow Repair/re-seed eroded areas and make appropriate corrective measures such as adding erosion control blankets, adding stone at flow entry points, or re- grading where necessary. Remove obstructions and sediment accumulations so water disperses. Standing water (BMP not draining) . If mosquito larvae are present and persistent, contact the San Diego County Vector Control Program at (858) 694-2888. Mosquito larvicides should be applied only when absolutely necessary and then only by a licensed individual or contractor. Where there is an underdrain, such as in planter boxes and manufactured biofilters, check the underdrain piping to make sure it is intact and unobstructed. Abate any potential vectors by filling holes in the ground in and around the biofilter facility and by insuring that there are no areas where water stands longer than 96 hours following a storm. Obstructed inlet or outlet structure Clear obstructions. Damage to structural components such as weirs, inlet, or outlet structures Repair or replace as applicable. Before the wet season and after rain events: remove sediment and debris from screens and overflow drains and downspouts; ensure pumps are functioning, where applicable; check integrity of mosquito screens; and; check that covers are properly seated and locked. Where cisterns are part of the system For manufactured high-flow-rate biofilters, see manufacturer’s maintenance guidelines Romeria Pointe SWQMP March 24, 2023 ATTACHMENT 4 City standard Single Sheet BMP (SSBMP) Exhibit [Use the City’s standard Single Sheet BMP Plan.] W W S SD SD S D S D S D S D SD SD SD SDSDSD SD SD SD 1 2 3 4 5 6 7 89 10 11 12 13 14 15 21 23 24 17 20 20 20 22 19 18 16 SWMP NO. PARTY RESPONSIBLE FOR MAINTENANCE: NAME: BNR INVESTMENT & DEVELOPMENT, LLC ADDRESS: 23800 VIA DEL RIO YORBA LINDA, CA 92887 PHONE No: (714) 692-9120 CONTACT: BMP NOTES: 1. THESE BMPS ARE MANDATORY TO BE INSTALLED PER MANUFACTURER'S RECOMMENDATIONS OR THESE PLANS. 2. NO CHANGES TO THE PROPOSED BMPS ON THIS SHEET WITHOUT PRIOR APPROVAL FROM THE CITY ENGINEER. 3. NO SUBSTITUTIONS TO THE MATERIAL OR TYPES OR PLANTING TYPES WITHOUT PRIOR APPROVAL FROM THE CITY ENGINEER. 4. NO OCCUPANCY WILL BE GRANTED UNTIL THE CITY INSPECTION STAFF HAS INSPECTED THIS PROJECT FOR APPROPRIATE BMP CONSTRUCTION AND INSTALLATION. 5. REFER TO MAINTENANCE AGREEMENT DOCUMENT. 6. SEE PROJECT SWMP FOR ADDITIONAL INFORMATION. N S W E Feet 40 20 0 ROBIN B. HAMERS & ASSOC., INC. HBR 9/13/21 10 17 ROMERIA POINTE APARTMENTS 534-1A BMP TABLE BMP ID# BMP TYPE SYMBOL CASQA NO.SIZE DRAWING NO. SHEET NO(S) INSPECTION FREQUENCY MAINTENANCE FREQUENCY TREATMENT CONTROL HYDROMODIFICATION AND TREATMENT CONTROL BIOFILTRATION PLANTER TC-32 534-1A 4 & 5 BI-WEEKLY AS-NEEDED BIOFILTRATION PLANTER TC-32 534-1A 4 & 5 BI-WEEKLY AS-NEEDED BIOFILTRATION PLANTER TC-32 534-1A 4 & 5 BI-WEEKLY AS-NEEDED BIOFILTRATION PLANTER TC-32 534-1A 4 & 5 BI-WEEKLY AS-NEEDED HYDROMODIFICATION LOW IMPACT DESIGN (LID) ROOF DRAIN TO LANDSCAPE SD-11 11 ANNUALLY ANNUALLY BMP SIGNAGE "PERMANENT WATER QUALITY TREATMENT FACILITY" SC-G 4 ANNUALLY ANNUALLY ON-SITE STORM DRAIN INLETS STENCILS SC-F 18 ANNUALLY ANNUALLY TRASH CAPTURE BMPS FLEXSTORM PURE FTC DRAIN INSERT MP-52 4 534-1A 4 & 5 QUARTERLY AS-NEEDED 1 2 3 4 5 15 16 19 20 21 24 \ \ ' \ \ ' I I \ ,· I I \ ~ ' ' ' ' -\ / __ :::-::::= ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' _,;:--:;::;./ C () / /;,: i Ii, / _,, ', ' ' ' ' ' LJ I ' ' ___;;.,_,:::.1,-----,' ' \ ' ' ' ,' ' " " " ' ,, ,, ,, 'i'1 ,, ,, ii, ,, ~ 1 \ 'ii I 11 I 1,'1 z I 11 ~ '1 ' II ,:1-,1 ,, I ' I I \,_J"'\ 1-v·, I I I I I I r-1 ! ! ' ' ,' / :/ ' : ' I I I I L 7 7 I I \ I 1 DATE INITIAL ENGINEER OF WORK PREPARED BY: 0~1~I~ ENGINEERS COSTA,~~~~ STREET, SUITE (949) 548-ll9~A 92627 205 l MICHAEL BENESH ' R.C.E. 37893 DATE I 0 0 0 0 0 0 0 0 0 0 0 REVISION DESCRIPTION I w~ ,tu½] ~ ~ • ® Iii ® 0 DATE INITIAL OTHER APPROVAL l DATE INITIAL CITY APPROVAL I 11 AS BUILT" RCE __ _ EXP, ___ _ DATE REVIE\JED BY: INSPECTOR DATE CITY OF c ENGINEE AR LS BAD GRADING PLANS RING DEPARTMENT FOR: I SHEETS I 7527 ROMERIA STRE GR2021-0039 APNs 216-300-12EI, i1~~LSBAD, CA APPROVED· BMP SITE PLAN 300-13 ENGINEERING MANAGER DWN BY· CHKD BY· RVWD BY: JASON S. GELDERT RCE 63912 EXPIRES 9 3D 22 PROJECT NO SDP 2018-0004 DATE DRAWING NO. PLAN DATE: 6/23/23