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Appendix G Preliminary Drainage LSA ASSOCIATES, INC. DRAFT ENVIRONMENTAL IMPACT REPORT JJUL U LJUL YYY 2 0 1 420 4 34202 DEL OBISPO STREET CCITY I T Y OOF F DDANA A N A PPOINT O I N T APPENDIX G PRELIMINARY DRAINAGE STUDY, WATER QUALITY MANGEMENT PLAN (WQMP), & FLOODPLAIN BASE ELEVATION ANALYSIS P:\DPC1301 Del Obispo\Preprint DEIR\PDFS\Appendices\Appendices.doc «07/23/14» DDRAFT R A F TDR T ENVIRONMENTAL IMPACT REPORT LSA ASSOCIATES, INC. 34202 DEL OBISPO STREET JJULYJUL U LJUL YYY 2 0 1 420 4 CCITY I T Y OOF F DDANA A N A PPOINT O I N T This page intentionally left blank G-2 P:\DPC1301 Del Obispo\Preprint DEIR\PDFS\Appendices\Appendices.doc «07/23/14» PRELIMINARY WATER QUALITY MANAGEMENT PLAN (P-WQMP) VTTM 17146 DANA POINT, CA Prepared For: PROJECT DIMENSIONS 4 Park Plaza Irvine, CA 92614 949.476.2246 Project Owner: AG/A&M DOHENY, LLC 2301 Rosecrans Avenue El Segundo, CA 90245 213.330.1963 Prepared By Fuscoe Engineering, Inc. 16795 Von Karman, Suite 100 Irvine, California 92606 949.474.1960 www.fuscoe.com Project Manager: Trevor Dodson, PE Date Prepared: October 12, 2012 Date Revised: May 2, 2013 2nd Revision: September 6, 2013 3rd Revision: February 25, 2014 4th Revision: April 1, 2014 Job Number: 1182.01.01 PRELIMINARY WATER QUALITY MANAGEMENT PLAN (P-WQMP) VTTM 17146 DANA POINT, CA 1182.01.01 April 1, 2014 PRELIMINARY WATER QUALITY MANAGEMENT PLAN (P-WQMP) VTTM 17146 DANA POINT, CA 1182.01.01 April 1, 2014 PRELIMINARY WATER QUALITY MANAGEMENT PLAN (P-WQMP) VTTM 17146 DANA POINT, CA April 1, 2014 1182.01.01 WQ 13-XXXX County of Orange/San Diego Region PRELIMINARY WATER QUALITY MANAGEMENT PLAN (P-WQMP) Project Name: VTTM 17146 34202 DEL OBISPO STREET, DANA POINT, CA APN 668-271-03 & 04 SITE DEVELOPMENT PERMIT NO. SDP13-0015 Prepared for: Agent for the Owner: Owner: PROJECT DIMENSIONS AG/A&M DOHENY, LLC, A DELAWARE 4 Park Plaza LIMITED LIABILITY COMPANY Irvine, CA 92614 2301 Rosecrans Avenue 949.476.2246 El Segundo, CA 90245 Contact: Stephen Sandland 213.330.1963 [email protected] Contact: Bradley Hall [email protected] Prepared by: FUSCOE ENGINEERING, INC. 16975 Von Karman, Suite 100 Irvine, CA 92606 949.474.1960 Contact: Trevor Dodson, PE [email protected] Date Prepared: October 12, 2012 Date Revised: May 22,, 201, 2013201333 222ndndnd Revision: September 6, 2013 333rdrdrd Revision: FebruaryFebruaryFebruary 22272777,, 2014, 2014 444ththth Revision: April 1, 2014 SOC PRELIMINARY WATER QUALITY MANAGEMENT PLAN (P-WQMP) VTTM 17146 Site Development Permit No. SDP13-0015 APN 668-271-03 & 04 CONTENTS Section I Permit(s) and Water Quality Conditions of Approval or Issuance ......................... 6 Section II Project Description .............................................................................................. 7 II.1 Project Description ............................................................................................................. 7 II.2 Potential Stormwater Pollutants .......................................................................................... 10 II.3 Hydrologic Conditions of Concern ..................................................................................... 10 II.4 Post-Development Drainage Characteristics ........................................................................ 11 II.5 Property Ownership/Management ..................................................................................... 11 Section III Site Description ............................................................................................... 13 Section IV Best Management Practices (BMPs) ................................................................... 16 IV.1 Project Performance Criteria.............................................................................................. 16 IV.2 Site Design and Drainage Plan .......................................................................................... 16 IV.3 BMP Selection and Project Conformance Analysis ............................................................... 18 IV.3.1 Hydrologic Source Controls (HSCs) ............................................................................. 18 IV.3.2 Infiltration BMPs ........................................................................................................ 19 IV.3.3 Evapotranspiration & Rainwater Harvesting BMPs ......................................................... 20 IV.3.4 Biofiltration BMPs ...................................................................................................... 23 IV.3.5 Hydromodification Control BMPs ................................................................................ 24 IV.3.6 Non-Structural Source Control BMPs........................................................................... 24 IV.3.7 Structural Source Control BMPs .................................................................................. 27 IV.4 Alternative Compliance Plan ............................................................................................. 28 IV.4.1 Request of Waiver of LID BMPs ................................................................................... 28 IV.4.2 Water Quality Credits ................................................................................................ 28 IV.4.3 Treatment Control BMPs ............................................................................................ 29 IV.4.4. Regional/Sub-Regional LID BMPs ............................................................................... 30 IV.4.5 Other Alternative Compliance Measures ..................................................................... 30 Section V Inspection/Maintenance Responsibility for BMPs ................................................ 31 V.1 Responsible Party ............................................................................................................. 31 V.2. Record Keeping ............................................................................................................... 31 V.3 Vector Control ................................................................................................................. 32 V.4 Required Permits .............................................................................................................. 32 V.5 Inspections ...................................................................................................................... 32 AG/A&M DOHENY, LLC Contents Page 4 Date Prepared/Revised: April 1, 2014 SOC PRELIMINARY WATER QUALITY MANAGEMENT PLAN (P-WQMP) VTTM 17146 Site Development Permit No. SDP13-0015 APN 668-271-03 & 04 V.6 Funding .......................................................................................................................... 32 V.7 Educational Materials ....................................................................................................... 32 V.8 Waste & Materials Management ........................................................................................ 33 V.9 Monitoring ...................................................................................................................... 33 V.10 BMP Inspection & Maintenance Frequency Matrix ............................................................... 33 Section VI BMP Exhibit (Site Plan) ...................................................................................... 36 VI.1 Site Plan and Drainage Plan .............................................................................................. 36 IV.2 Electronic Data Submittal .................................................................................................. 36 Section VII Educational Materials Included ......................................................................... 37 Attachments Attachment A ...................................................................................................... Educational Materials Attachment B ............................................................................. BMP Operation and Maintenance Plan Attachment C ......................................................................................................................... Exhibits Attachment D ............................................................. Resolutions/Conditions of Approval (Placeholder) Attachment E .............................................................................. BMP Sizing Calculations & Worksheets Attachment F ................................................................... Hydromodification Exemption Documentation Attachment G ........................................................................................................ Geotechnical Study Attachment H ........................................................................ SOCWA Memorandum of Understanding Exhibits • Vicinity Map • Preliminary WQMP Exhibit • Pre-Filter Detention Volume Exhibits (2) • BMP Details & Fact Sheets AG/A&M DOHENY, LLC Contents Page 5 Date Prepared/Revised: April 1, 2014 SOC PRELIMINARY WATER QUALITY MANAGEMENT PLAN (P-WQMP) VTTM 17146 Site Development Permit No. SDP13-0015 APN 668-271-03 & 04 SECTION I PERMIT(S) AND WATER QUALITY CONDITIONS OF APPROVAL OR ISSUANCE PROJECT INFORMATION Grading or Building Permit/Application No. SDP13-0015 Permit No. Pending (if applicable) CDP13-0010 (If applicable) Address of Project Site (or 34202 Del Obispo Street, Dana Point, CA 92629 Tract Map and Lot Number if no address) and APN APN 668-271-03 & 04 WATER QUALITY CONDITIONS OF APPROVAL OR ISSUANCE Water Quality Conditions of Approval or Issuance
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