1. Water Quality in San Francisco Bay J.A. Davis (jay@sfei.org) San Francisco Estuary Institute

3. u www.sfei.org u Non-profit scientific organization u Programs: –Contaminant Monitoring and Research Program »Regional Monitoring Program »Aquatic Pesticide Monitoring Program –Regional Watershed Science Program –Regional Wetlands Monitoring Program –Biological Invasions

4. Regional Monitoring Program  Innovative partnership between government, dischargers, and scientists  Work closely with the Regional Board  $ 3 million/year of stable funding  Began in 1993  World class monitoring  Major change in direction beginning in 2002

5. RMP Objectives  Compare monitoring information to relevant water quality objectives and other guidelines  Describe patterns and trends in contaminant concentration and distribution  Describe general sources and loading of contamination to the Estuary  Measure contaminant effects on selected parts of the Estuary ecosystem  Synthesize and distribute information from a range of sources to present a more complete picture of the sources, distribution, fates, and effects of contaminants in the Estuary ecosystem

6. RMP Components  Water Chemistry  Aquatic Toxicity  Sediment Chemistry  Sediment Toxicity  Bivalve Bioaccumulation  Fish  Pilot Studies  Special Studies

9. 303(d) Listed Chemicals u Draft list from 11/01 u High Priority –Mercury, PCBs u Medium –Chlordane, DDT, Dieldrin, Diazinon u Low –Selenium, Dioxins, Furans, Dioxin-like PCBs

10. 303(d) “B” Listed Chemicals u Draft list from 11/01 –Copper –Nickel –PAHs –PBDEs –Sediment Toxicity

16. PCB Concentrations in San Francisco Bay Fish Fillets, 2000

17. Mercury Concentrations in San Francisco Bay Fish Fillets, 2000

18. ContaminantNPercent Above PCBs8090% Mercury13438% Dieldrin8019% Selenium1217% DDTs804% Chlordanes800% DioxinsNot yet available Comparisons to Screening Values

20. Conceptual Model of PCB Fate in the Bay

21. Predicted Long Term Trends in PCB Mass with Varying Loads

22. New Contaminants of Concern: Flame Retardants TetraBDEPentaBDE HexaBDE Sources: textiles, household and industrial products Use: reduces flame capacity of materials Max level: ppt (ng/L) Sacramento River water Concern: endocrine system disruption, bioaccumulation Triphenylphosphate

23. My Water Quality Report Card for the Bay  Getting Better  DDT, chlordane  Sloooow improvement  PCBs  Staying the Same  Hg  Getting Worse  PBDEs (?), Pyrethroids (?)