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2006 Sport Fish Status and Trends

2006 Sport Fish Status and Trends. March 18, 2008 TRC Meeting Jennifer Hunt jennifer@sfei.org. 2006 Status & Trends Sport Fish. 3 Main Indicator Species Organics – white croaker & shiner surfperch PCBs – PBDEs – Dioxins – Legacy Pesticides Mercury – striped bass

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2006 Sport Fish Status and Trends

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  1. 2006 Sport FishStatus and Trends March 18, 2008 TRC Meeting Jennifer Hunt jennifer@sfei.org Draft Data - Do Not Cite, Quote, or Distribute

  2. 2006 Status & TrendsSport Fish • 3 Main Indicator Species • Organics – white croaker & shiner surfperch • PCBs – PBDEs – Dioxins – Legacy Pesticides • Mercury – striped bass • Analysis pending otolith results • Have white sturgeon mercury data Draft Data - Do Not Cite, Quote, or Distribute

  3. 2006 Additional Species • Look at additional sport fish species • Anchovy, barred surfperch, black surfperch, brown rockfish, Chinook salmon, rubberlip surfperch, walleye surfperch • Analyzed PCBs, Hg and PBDEs Draft Data - Do Not Cite, Quote, or Distribute

  4. Screening Values • PCBs – TMDL Tissue Target – 10 ppb ww • Dioxins – TMDL Tissue Target – 0.14 ppt ww • Mercury – TMDL Tissue Target 0.2 ppm ww • DDT, Chlordane, and Dieldrin – OEHHA values • PBDEs – No state screening value Draft Data - Do Not Cite, Quote, or Distribute

  5. Many Species Still Exceeding Targets Draft Data - Do Not Cite, Quote, or Distribute

  6. 97% reduction in average concentrations to reach target 100% Croaker Exceeding PCB TMDL Target Draft Data - Do Not Cite, Quote, or Distribute

  7. 100% Shiner Exceeding PCB TMDL Target 96% reduction in average concentrations to reach target Draft Data - Do Not Cite, Quote, or Distribute

  8. PCBs - Other Species 2003-2006 Draft Data - Do Not Cite, Quote, or Distribute

  9. Shiner Perch PCBs highest in Oakland (1997-2006) Draft Data - Do Not Cite, Quote, or Distribute

  10. 75% of Sturgeon Above Hg TMDL Target Draft Data - Do Not Cite, Quote, or Distribute

  11. Good News!Many Bay Species Below Hg TMDL Target Draft Data - Do Not Cite, Quote, or Distribute

  12. Sturgeon Mercury Higher in South Bay 57% of the variation in Hg accounted for by Site Draft Data - Do Not Cite, Quote, or Distribute

  13. Dioxins Not ChangingSum of Dioxin and Furan TEQs Draft Data - Do Not Cite, Quote, or Distribute

  14. Dioxins Varying by Site & TimeSum of Dioxin and Furan TEQs Draft Data - Do Not Cite, Quote, or Distribute

  15. Bay Wide DioxinsSum of Dioxin and Furan TEQs Draft Data - Do Not Cite, Quote, or Distribute

  16. Is Dioxin Equivalency Higher in 2006?Sum of Dioxin, Furan, and dioxin-like PCB TEQs Draft Data - Do Not Cite, Quote, or Distribute

  17. Dioxin Equivalent Toxicity higher in 2006?Sum of Dioxin, Furan, and dioxin-like PCB TEQsWhite Croaker PCB TEQ (ND=1/2 MDL) Draft Data - Do Not Cite, Quote, or Distribute

  18. Higher Dioxin Equivalent Toxicity due to higher Dioxin-Like PCBsSum of dioxin like PCB TEQs Draft Data - Do Not Cite, Quote, or Distribute

  19. 2006 PBDEs - All Species Draft Data - Do Not Cite, Quote, or Distribute

  20. PBDEs Varying Over Time Oakland Draft Data - Do Not Cite, Quote, or Distribute

  21. 2006 Dieldrin • White Croaker • South Bay had the highest concentrations – 3.3 ppb • 44% of Croaker Above SV (Oakland and South Bay) • Shiner Surfperch • South Bay had the highest concentrations – 2.5 ppb • 27% of Shiner Above SV (Oakland and South Bay) • White Sturgeon • 25% of Sturgeon Above SV (South Bay) Draft Data - Do Not Cite, Quote, or Distribute

  22. 2006 DDTs • White Croaker • South Bay had the highest concentrations – 110 ppb • 33% of Croaker Above SV (South Bay and SPB) • Shiner Surfperch • Oakland had the highest concentrations – 27 ppb • 0% of Shiner Above SV • White Sturgeon • South Bay had the highest concentrations – 42 ppb • 0% of Sturgeon Above SV Draft Data - Do Not Cite, Quote, or Distribute

  23. 2006 Chlordanes • White Croaker • South Bay had the highest concentrations – 24 ppb • 11% of Croaker Above SV • Shiner Surfperch • South Bay had the highest concentrations – 12 ppb • 0% of Shiner Above SV • White Sturgeon • South Bay had the highest concentrations – 13 ppb • 0% of Sturgeon Above SV Draft Data - Do Not Cite, Quote, or Distribute

  24. DDTs Varying Over Time Oakland Draft Data - Do Not Cite, Quote, or Distribute

  25. 2006 Summary • White croaker organic concentrations generally elevated over past years • Oakland generally higher than other sites for many contaminants • 100% white croaker, shiner perch, white sturgeon above PCB target • Interannual variation in PCBs but no time trends • Shiner PCBs statistically higher in Oakland • South Bay Hg statistically higher for shiner, jacksmelt, and white sturgeon • 100% white croaker above 0.14 dioxin target • No time trends in croaker dioxins • Croaker, shiner and sturgeon still exceeding dieldrin SV Draft Data - Do Not Cite, Quote, or Distribute

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