THE CITY OF SAN DIEGO Annual Receiving Waters Monitoring Report for the Point Loma Ocean Outfall 2010 DRAFT City of San Diego Ocean Monitoring Program Public Utilities Department Environmental Monitoring and Technical Services Division THE CITY OF SAN DIEGO June 30, 2011 Mr. David Gibson, Executive Officer Regional Water Quality Control Board San Diego Region 917 4 Sky Park Court, Suite 100 San Diego, CA 92123 Attention: POTW Compliance Unit Dear Sir: Enclosed on CD is the 2010 Annual Receiving Waters Monitoring Report for the Point Lorna Ocean Outfall as required per NPDES Permit No. CA0107409, Order No. R9-2009-0001. This report contains data summaries, analyses and interpretations ofthe various portions ofthe ocean monitoring program, including oceanographic conditions, water quality, sediment characteristics, macro benthic communities, demersal fishes and megabenthic invertebrates, and bioaccumulation of contaminants in fish tissues. I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, I certify that the information submitted is, to the best ofmy knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Sin~.;t;, n . l~f//tz4 Steve Meyer Deputy Public · tilities Director SM/tds Enclosure: CD containing PDF file of this report cc: U.S. Environmental Protection Agency, Region 9 Department of Environmental Health, San Diego County Division of Water Quality, State Resources Control Board Environmental Monitoring and Technical Services Division • Public Utilities 2392 Kincaid Rood • Son Diego, CA 92101·0811 Tel (619) 758·2300 Fox (619) 758·2309 Annual Receiving Waters Monitoring Report for the Point Loma Ocean Outfall 2010 DRAFT Prepared by: City of San Diego Ocean Monitoring Program Public Utilities Department Environmental Monitoring and Technical Services Division June 2011 Timothy D. Stebbins, Editor Ami K. Latker, Managing Editor Table of Contents Acronyms and Abbreviations .................................................................................................vii Production Credits and Acknowledgements ..........................................................................xi Executive Summary ...................................................................................................................1 T. Stebbins, A. Latker Chapter 1. General Introduction ............................................................................................7 T. Stebbins Background .............................................................................................................................7 Receiving Waters Monitoring .................................................................................................7 Literature Cited .......................................................................................................................9 Chapter 2. Oceanographic Conditions ..................................................................................13 A. Latker, J. Pettis Schallert, W. Enright, T. Stebbins Introduction ..........................................................................................................................13 Materials and Methods .........................................................................................................14 Results ..................................................................................................................................16 Discussion ............................................................................................................................27 Literature Cited ....................................................................................................................29 Chapter 3. Water Quality ......................................................................................................33 A. Davenport, A. Latker Introduction ..........................................................................................................................33 Materials and Methods .........................................................................................................33 Results ..................................................................................................................................36 Discussion ............................................................................................................................40 Literature Cited ....................................................................................................................41 Chapter 4. Sediment Conditions ............................................................................................45 E. Moore Introduction ..........................................................................................................................45 Materials and Methods .........................................................................................................46 Results ..................................................................................................................................47 Discussion ............................................................................................................................52 Literature Cited ....................................................................................................................53 Chapter 5. Macrobenthic Communities ................................................................................55 P. Vroom, N. Haring, R. Velarde, T. Stebbins Introduction ..........................................................................................................................55 Materials and Methods .........................................................................................................55 Results ..................................................................................................................................57 Discussion ............................................................................................................................67 Literature Cited ....................................................................................................................69 i Table of Contents (continued) Chapter 6. Demersal Fishes and Megabenthic Invertebrates .............................................73 P. Vroom, R. Gartman Introduction ..........................................................................................................................73 Materials and Methods .........................................................................................................73 Results ..................................................................................................................................75 Discussion ............................................................................................................................83 Literature Cited ....................................................................................................................85 Chapter 7. Bioaccumulation of Contaminants in Fish Tissues ...........................................89 A. Latker, E. Moore, R. Gartman Introduction ..........................................................................................................................89 Materials and Methods .........................................................................................................89 Results ..................................................................................................................................91 Discussion ............................................................................................................................94 Literature Cited ....................................................................................................................97 Glossary .................................................................................................................................101 APPENDICES Appendix A: Supporting Data — Oceanographic Conditions Appendix B: Supporting Data — Water Quality Appendix C: Supporting Data — Sediment Conditions Appendix D: Supporting Data — Macrobenthic Communities Appendix E: Supporting Data — Demersal Fishes and Megabenthic Invertebrates Appendix F: Supporting Data — Bioaccumulation of Contaminants in Fish Tissues ii Table of Contents (continued) LIST OF TABLES Chapter 1: General Introduction No Tables. Chapter 2: Oceanographic Conditions 2.1 Sample dates for quarterly oceanographic surveys conducted during 2010 ...............16 2.2 Temperature, salinity, dissolved oxygen, pH, transmissivity, and chlorophyll a for surface and bottom waters during 2010 ......................................................................19 Chapter 3: Water Quality 3.1 Depths at which seawater samples are collected for kelp bed and offshore stations ...36 3.2 Rainfall and bacteria levels at shore stations during 2010...........................................37 3.3 Elevated bacteria at shore stations during 2010 ..........................................................38 3.4