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

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Presentation on theme: "Regulatory State of the Bay Status and Trends Tom Mumley San Francisco Bay Regional Water Quality Control Board."— Presentation transcript:

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

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

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

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 Cyanide Water Quality Objectives

5 1975 – The First Basin Plan Water Quality Standards Resolution = 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 1998 SF Bay 303(d) List Copper Diazinon Dioxins/furans Legacy pesticides Chlordane DDT Dieldrin Mercury Nickel PCBs Selenium Green = done Blue = this year Maroon = next

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: tmdlmain.htm tmdlmain.htm For Basin Plan (WQOs) info: basinplan.htm


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