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Regulatory State of the Bay Status and Trends

Regulatory State of the Bay Status and Trends. Tom Mumley San Francisco Bay Regional Water Quality Control Board. SF Bay Region TMDL Projects 2006. Napa River Pathogens , Sediment , Nutrients. Sonoma Creek Pathogens , Sediment , Nutrients.

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Regulatory State of the Bay Status and Trends

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  1. Regulatory State of the BayStatus and Trends Tom Mumley San Francisco Bay Regional Water Quality Control Board

  2. SF Bay Region TMDL Projects 2006 Napa River Pathogens, Sediment, Nutrients Sonoma Creek Pathogens, Sediment, Nutrients Green = done Blue = this year Maroon = next Tomales Bay Watershed Pathogens, Sediment, Nutrients, Mercury San Francisco Bay Mercury, PCBs, Legacy Pesticides, Selenium, plus Copper and Cyanide WQOs San Francisquito Creek Sediment San Francisco Bay Area Urban Creeks Diazinon, Pesticide Toxicity Guadalupe River Watershed Mercury

  3. SF Bay Region TMDL Projects 2007 Napa River Pathogens, Sediment, Nutrients Sonoma Creek Pathogens, Sediment,Nutrients Green = done Blue = this year Maroon = next Petaluma River Pathogens, Sediment,Nutrients Tomales Bay Watershed Pathogens, Sediment, Nutrients, Mercury* Richardson Bay Pathogens San Francisquito Creek Sediment San Francisco Bay Area Urban Creeks Diazinon, Pesticide Toxicity Pescadero/Butano Creeks Sediment Guadalupe River Watershed Mercury

  4. SF Bay TMDL Projects 2007 Green = done Blue = this year Maroon = next San Francisco Bay Mercury, PCBs, Legacy Pesticides, Dioxins, Selenium plus Copper and CyanideWater Quality Objectives

  5. 1975 – The First Basin Plan Water Quality Standards • Resolution 68-16 = antidegradation • Beneficial uses • Water quality objectives “No toxics in toxics amounts”

  6. 1975 – The First Basin Plan • Prohibitions (no < 10 to 1 dilution) • Secondary treatment for wastewater “Future attempts to control water quality must be based on factors more omnibus than consideration of municipal and industrial wastewater treatment alone.”

  7. 1982 – Basin Plan • Toxicity limit in wastewater permits • Metals and CN limits • Construction-site erosion and sediment control

  8. 1986 – Basin Plan • Metals water quality objectives • Metals and CN limits • Flow-through bioassay acute toxicity limit • Chronic toxicity studies • Urban runoff management Program

  9. Inception of Regional Monitoring • RMP created in 1992 • Based on UC Santa Cruz and BPTC Program studies • Other factors • SF Estuary Project • SF Estuary Institute

  10. 1995 – 2005 Basin Plans • Narrative no bioaccumulation objective • NPDES stormwater regs • Dredging and dredge disposal • Long Term Management Strategy • California Toxics Rule and State Implementation Policy

  11. 303(d) and TMDL Era Green = done Blue = this year Maroon = next • 1998 SF Bay 303(d) List • Copper • Diazinon • Dioxins/furans • Legacy pesticides • Chlordane • DDT • Dieldrin • Mercury • Nickel • PCBs • Selenium

  12. The Future • Emerging pollutants  • Fire retardants (PBDEs) • Perfluorinated compounds • Pharmaceuticals • Pesticides ? • Diazinon replacements → pyrethroids  • Trash  • PAHs ? • Nutrients ?

  13. The Future • Mercury 2.0 • Methylmercury production and fate • Fate of mercury in bay sediments • Nutrients? • PCBs 2.0 • Fate of PCBs in bay sediments • Sediment transport • Relevance of dredging • North Bay vs South Bay segments • Urban and non-urban runoff loads • Sediment transport  salt ponds

  14. For TMDL info: www.waterboards.ca.gov/sanfranciscobay/tmdlmain.htm For Basin Plan (WQOs) info: www.waterboards.ca.gov/sanfranciscobay/basinplan.htm

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