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Point Loma Ocean Outfall APPLICATION FOR RENEWAL OF NPDES CA0107409 and 301(h) MODIFIED SECONDARY TREATMENT REQUIREMENTS Point Loma Ocean Outfall VOLUMEV APPENDICES G thru I City of San Diego Metropolitan Wastewater Department November 2007 Application for Renewal of NPDES CA0107409 & 301(h) Modified Secondary Treatment Requirements for Biochemical Oxygen Demand and Total Suspended Solids POINT LOMA OCEAN OUTFALL & POINT LOMA WASTEWATER TREATMENT PLANT Submitted under provisions of Section 301(h) of the Clean Water Act City of San Diego Metropolitan Wastewater Department 9192 Topaz Way San Diego, CA 92123 (858) 292-6401 November 2007 (updated) APPLICATION FOR RENEWAL OF NPDES CA0107409 & 301(h) MODIFIEDSECONDARY TREATMENT REQUIREMENTS CITY OF SAN DIEGO POINT LOMA OCEAN OUTFALL November 2007 VOLUME V TECHNICAL APPENDICES G through I Appendix G Beneficial Uses Assessment Appendix H Endangered Species Appendix I Proposed Monitoring Program LIST OF VOLUMES Volume I Executive Summary Volume II Part 1 - Basis of Application Part 2 - NPDES Application Forms Part 3 - Antidegradation Analysis Volume III Large Applicant Questionnaire Volume IV Appendix A Metro System Facilities and Operations Appendix B Point Loma Ocean Outfall Appendix C Compliance with Water Contact Standards Appendix D Effluent Disinfection Evaluation Appendix E Benthic Sediments and Organisms Appendix F Bioaccumulation Assessment Volume V Appendix G Beneficial Use Assessment Appendix H Endangered Species Appendix I Proposed Monitoring Program Volume VI Appendix J 2006 Annual Biosolids Report Volume VII Appendix K Source Control Program Appendix L 2006 Annual Pretreatment Report Volume VIII Appendix M Re-entrainment Appendix N Oceanography Appendix O Initial Dilution Simulation Models Appendix P Dissolved Oxygen Demand Appendix Q ROV Inspection of Discharge Zone Appendix R Analysis of Ammonia Appendix S 2001 California Ocean Plan Appendix T 2005 California Ocean Plan Appendix U Correspondence AppendixG Beneficial Use Assessment G ~ Beneficial Use Assessment for Modification of Treatment APPENDIXG BENEFICIAL USE ASSESSMENT For CITY OF SAN DIEGO APPLICATION FOR MODIFICATION OF SECONDARY TREATMENT REQUIREMENTS AT THE POINT LOMA TREATMENT FACILITY To THE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY City ofSan Diego November 2007 Appendix G- Beneficial Use Assessment Application for Modification of Secondary Treatment TABLE OF CONTENTS TABLE OF CONTENTS .................................................................................................... 2 LIS'f OF TABLES .............................................................................................................. 3 LIST OF FIGlJRES ............................................................................................................ 4 IN'TRODUCTION .............................................................................................................. 5 EXISTING ENVIRONMENT ............................................................................................ 6 Project Area..................................................................................................................... 6 Point Lorna Wastewater Treatment Plant ................................................................... 7 Other Inputs ................................................................................................................. 9 Oceanographic Conditions ............................................................................................ 10 Bathymetry................................................................................................................ 10 Thermocline .............................................................................................................. 11 Water Circulation ...................................................................................................... 12 Upwelling.................................................................................................................. 12 Biological Environment ............................................................................................ 13 FISHERIES ....................................................................................................................... 15 Introduction................................................................................................................... 15 Essential Fish Habitat. ................................................................................................... 16 Regulatory Background ............................................................................................ 16 Environmental Setting ............................................................................................... 17 Fishery Management Plans ....................................................................................... 19 EFH Descriptions and Identifications ....................................................................... 22 Managed Species ....................................................................................................... 32 EFH Impacts ........................................................ ; .................................................... 43 Cumulative Impacts .................................................................................................. 46 Commercial Fishing ...................................................................................................... 48 Recreational Fishing ..................................................................................................... 60 RECREATIONAl, ACTIVITIES ..................................................................................... 65 Swimming and Wading ................................................................................................. 71 Skim~boarding ............................................................................................................... 73 Surfmg........................................................................................................................... 73 Kite-boarding and Sailboarding .................................................................................... 74 Kayaldng, Surf Ski and Outrigger Canoeing ................................................................ 74 Paddleboarding.............................................................................................................. 75 Water skiing and Wake boarding .................................................................................. 76 SCUBA, Snorkeling, and Free-diving .......................................................................... 76 Jet Skiing/Personal Watercraft ...................................................................................... 77 Tidepooling ................................................................................................................... 77 Boating and Sailing ....................................................................................................... 78 Whale Watching ............................................................................................................ 79 Cruising......................................................................................................................... 79 OTHER BENEFICIAL USES .......................................................................................... 79 Marine Protected Areas ................................................................................................. 79 Research and Education ................................................................................................ 81 City of San Diego G-2 November 2007 Appendix G- Beneficial Use Assessment Application for Modification of Secondary Treatment Artificial Reefs .............................................................................................................. 83 Navigation and Shipping ............................................................................................... 84 Military and Industrial Use ........................................................................................... 84 Environmental Monitoring ............................................................................................ 86 PUBLIC IIEALTH ........................................................................................................... 88 Microbiological Compliance ......................................................................................... 88 Beach Water Quality ................................................................................................... 113 Fish Tissue Compliance .............................................................................................. 11 7 RESTRICTIONS ............................................................................................................ 127 BENEFICIAL USE IMPACTS ...................................................................................... 128 CONCLUSIONS............................................................................................................. 132 REFEREN"CES................................................................................................................ 132 LIST OF TABLES Table 1. Point Lorna Wastewater Treatment Plant NPDES Permit Beneficial Uses......... 5 Table 2. Federal Fishery Management Plans Covering the Southern California Bight... 20 Table 3. Groundfish Species Essential Fish Habitat. ......................................................
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