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Home My WebLink AboutAMEND 2021-0004; DISTRIBUTE LOTS 13-15 SHELL BUILDING; STORM WATER QUALITY MANAGEMENT PLAN (SWQMP); 2021-08-04TABLE 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: OMA 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 1 e: 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 Ccuy of Carlsbad STORM WATER STANDARDS QUESTIONNAIRE Development Services Land Development Engineering 1635 Faraday Avenue (760) 602-2750 www.carlsbadca.gov E-34 I INSTRUCTIONS: To address post-development pollutants that may be generated from development projects, the city requires that new development and significant redevelopment priority projects incorporate Permanent Storm Water Best Management Practices (BMPs) into the project design per Carlsbad BMP Design Manual (BMP Manual). To view the BMP Manual, refer to the Engineering Standards (Volume 5). This questionnaire must be completed by the applicant in advance of submitting for a development application (subdivision, discretionary permits and/or construction permits). The results of the questionnaire determine the level of storm water standards that must be applied to a proposed development or redevelopment project. Depending on the outcome, your project will either be subject to 'STANDARD PROJECT' requirements 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: DGB6 PROJECT ID: AMEND2021-0004 ADDRESS: 3266 Lionshead Avenue APN: 2218811600 The project is (check one): D New Development ~ Redevelopment The total proposed disturbed area is: 32,981 ft2 ( 0.76 ) acres The total proposed newly created and/or replaced impervious area is:28,064 ft2 ( 0.64 ) 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 SDP 16-19 SWQMP#: GR2017-0004 Then, go to Step 1 and follow the instructions. When completed, sign the form at the end and subm~ this with your application to the city. E-34 Page 1 a 4 REV02/16 STEP1 TO BE COMPLETED FOR ALL PROJECTS To detennine if your project is a "development project", please answer the following question: YES NO Is your project LIMITED TO routine maintenance activity and/or repair/improvements to an existing building or structure that do not alter the size (See Section 1.3 of the BMP Design Manual for guidance)? □ Jg( 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; □ ~ 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 quidance? 2. Retrofitting or redeveloping existing paved alleys, streets, or roads that are designed and constructed in accordance with the USEPA Green Streets guidance? □ Ji<t 3. Ground Mounted Solar Array that meets the criteria provided in section 1.4.2 of the BMP manual? □ 18: 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, go to Step 3. E-34 Page 2 r:i 4 REV 04/17 STEP4 TO BE COMPLETED FOR REDEVELOPMENT PROJECTS THAT ARE PRIORITY DEVELOPMENT PROJECTS (PDP) ONLY Complete the questions below regarding your redevelopment project (MS4 Permit Provision E.3.b.(2)): YES NO Does the redevelopment project result in the creation or replacement of impervious surface in an amount of less than 50% of the surface area of the previously existing development? Complete the percent impervious calculation below: Existing impervious area (A) = 379,867 sq. ft. □ Jg!'. Total proposed newly created or replaced impervious area (B) = 28,064 sq. ft. Percent impervious area created or replaced (B/A)*100 = 7.4 % If you answered "yes·, the structural BMPs required for PDP apply only to the creation or replacement of impervious surface and not the entire development. Go to step 5, 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 statinq "Mv proiect is a PDP .. ." and complete applicant information. STEPS CHECK THE APPROPRIATE BOX AND COMPLETE APPLICANT INFORMATION 181 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. □ 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 Applicant Name: Alexandria Smille Applicant Title: Project Manager -Applicant Applicant Signature: A~S~ Date: 02/09/2021 .. .. • Environmentally Sensitive Areas include but are not limited to all Clean Water Act Section 303(d) impaired water bodies; areas designated as Areas of Speaal 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 Citv Use Only YES NO City Concurrence: □ □ By: Date: Project ID: E-34 Page 4 cl4 REV 04/17 SITE INFORMATION CHECKLIST Proiect Summarv Information Proiect Name CARLSBAD RACEWAY LOT 15 Project ID SOP 16-19/AMEND2021-0004 Project Address 3266 Lionshead Avenue, Carlsbad, CA 92010 Assessor's Parcel Number(s) (APN(s)) 221-881-16 Project Watershed (Hydrologic Unit) 904.31 Carlsbad 904 Parcel Area 11.46 Acres ( 499,150 Sauare Feet) Existing Impervious Area 0 0 (subset of Parcel Area) Acres ( Square Feet) Area to be disturbed by the project* 10.58 (Project Area) Acres ( 460,821 Square Feet) Project Proposed Impervious Area .. 8.72 379,867 (subset of Proiect Area) Acres ( Square Feet) Project Proposed Pervious Area*** 1.86 (subset of Proiect Area) Acres ( 80,954 Square Feet) Note: Proposed Impervious Area+ Proposed Pervious Area= Area to be Disturbed by the Project. This may be less than the Parcel Area. Revised Summary Information AMEND2021-0004 Revised Area to be disturbed by new project* (Project Area) _O_. 7_6 __ Acres __ 3_2_·9_8_1 __ Square Feet) Revised Project Proposed Impervious Area** (subset of Project Area) _8_. 7_0 __ Acres ( 378,783 Square Feet) Revised Project Proposed Pervious Area*** (subset of Project Area) ·1.8a ___ Acres __ 8_2_,0_3_8 __ Square Feet)