(South Bay Water Reclamation Plant) 2009
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THE CITY OF SAN DIEGO Annual Receiving Waters Monitoring Report for the South Bay Ocean Outfall (South Bay Water Reclamation Plant) 2009 City of San Diego Ocean Monitoring Program Public Utilities Department Environmental Monitoring and Technical Services Division THE CITY OF SAN DIEGO June 30, 2010 Mr. David Gibson, Executive Officer Regional Water Quality Control Board San Diego Region 9174 Sky Park Court, Suite 100 San Diego, CA 92123 Attention: POTW Compliance Unit Dear Sir: Enclosed is the 2009 Annual Receiving Waters Monitoring Report for the South Bay Ocean Outfall, South Bay Water Reclamation Plant as required per NPDES Permit No. CA0109045, Order No. 2006-067. This report contains data summaries, analyses and interpretations of the various portions of the ocean monitoring program, including oceanographic conditions, water quality, sediment characteristics, macro benthic communities, demersal fishes and megabenthic invertebrates, and bioaccumulation ofcontaminants in fish tissues. These data are also presented in the International Boundary and Water Commission's annual report for discharge from the International Wastewater Treatment Plant (NPDES Permit No. CA0108928, Order No. 96-50). 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 ofthe 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. Steve Meyer Deputy Public Utilities Director SM/tds Enclosures: 1. Annual Receiving Waters Monitoring Report 2. CD containing PDF file of this report cc: Department of Environmental Health, County of San Diego U.S. Environmental Protection Agency, Region 9 Public Utilities Department Library, City of San Diego 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 South Bay Ocean Outfall (South Bay Water Reclamation Plant) 2009 Prepared by: City of San Diego Ocean Monitoring Program Public Utilities Department Environmental Monitoring and Technical Services Division June 2010 Table of Contents Credits and Acknowledgements................................................................................................iii Executive Summary ...................................................................................................................1 Chapter 1. General Introduction ............................................................................................7 Introduction ..............................................................................................................................7 Regular Fixed-Grid Monitoring...............................................................................................8 Random Sample Regional Surveys...........................................................................................9 Literature Cited ........................................................................................................................9 Chapter 2. Oceanographic Conditions ..................................................................................13 Introduction ...........................................................................................................................13 Materials and Methods ..........................................................................................................14 Results and Discussion ..........................................................................................................15 Summary and Conclusions ....................................................................................................24 Literature Cited .....................................................................................................................26 Chapter 3. Water Quality ......................................................................................................29 Introduction ...........................................................................................................................29 Materials and Methods ..........................................................................................................29 Results and Discussion ..........................................................................................................31 Summary and Conclusions ....................................................................................................37 Literature Cited .....................................................................................................................37 Chapter 4. Sediment Characteristics ....................................................................................39 Introduction ...........................................................................................................................39 Materials and Methods ..........................................................................................................39 Results and Discussion ..........................................................................................................41 Summary and Conclusions.....................................................................................................46 Literature Cited .....................................................................................................................47 Chapter 5. Macrobenthic Communities ................................................................................51 Introduction ...........................................................................................................................51 Materials and Methods ..........................................................................................................51 Results and Discussion ..........................................................................................................52 Summary and Conclusions ....................................................................................................60 Literature Cited .....................................................................................................................61 Chapter 6. Demersal Fishes and Megabenthic Invertebrates .............................................65 Introduction ...........................................................................................................................65 Materials and Methods ..........................................................................................................65 Results and Discussion...........................................................................................................66 Summary and Conclusions ....................................................................................................74 Literature Cited .....................................................................................................................76 i Table of Contents (continued) Chapter 7. Bioaccumulation of Contaminants in Fish Tissues ...........................................79 Introduction ...........................................................................................................................79 Materials and Methods ..........................................................................................................79 Results and Discussion ..........................................................................................................81 Summary and Conclusions.....................................................................................................87 Literature Cited .....................................................................................................................90 Chapter 8. San Diego Regional Survey — Sediment Conditions .......................................93 Introduction ...........................................................................................................................93 Materials and Methods ..........................................................................................................93 Results and Discussion ..........................................................................................................95 Summary and Conclusions...................................................................................................103 Literature Cited ...................................................................................................................103 Chapter 9. San Diego Regional Survey — Macrobenthic Communities .........................105 Introduction .........................................................................................................................105 Materials and Methods ........................................................................................................105 Results and Discussion ........................................................................................................107 Summary and Conclusions ..................................................................................................116