Presentation is loading. Please wait.

Presentation is loading. Please wait.

Developing Water Quality Solutions for SF Bay Dyan Whyte California Regional Water Quality Control Board San Francisco Bay Region.

Similar presentations


Presentation on theme: "Developing Water Quality Solutions for SF Bay Dyan Whyte California Regional Water Quality Control Board San Francisco Bay Region."— Presentation transcript:

1 Developing Water Quality Solutions for SF Bay Dyan Whyte California Regional Water Quality Control Board San Francisco Bay Region

2 Dyan Whyte RMP annual meeting 5/13/2003 Total Maximum Daily Load Clean Water Act §303(d) requires States to: –Identify impaired waters –Adopt plans to restore and maintain water quality standards California: –TMDLs are adopted by incorporation into Basin Plans –Basin Planning process requires implementation plans

3 Dyan Whyte RMP annual meeting 5/13/ (d) Impaired Waters List 1472 listings statewide (400 – 800 projects) 160+ listings in SF Bay Region (33 projects?)

4 Dyan Whyte RMP annual meeting 5/13/2003 San Francisco Bay listed as impaired by: Pesticide toxicity Legacy pesticides Selenium Exotic species Dioxins/furans Copper Nickel Mercury PCBs PAHs & PBDEs watch listed

5 Project Definition Project Definition Data Collection Project Analyses Project Analyses Regulatory Action/Process WQS Support WQS Support 303(d) List Project Planning Project Planning Adaptive Implementation TMDL Phases & Products Impairment assessment, conceptual model development Project Reports Basin Plan amendment

6 Dyan Whyte RMP annual meeting 5/13/2003 How to deal with uncertainty & complexity ??? STOP! Do not proceed until all the facts are in and we understand the system perfectly and can take actions that we know will be 100% effective.

7 Dyan Whyte RMP annual meeting 5/13/2003 Coping with Complexity & Uncertainties Proceed but employ: the scientific method A cautious approach Flexibility Adaptive implementation

8 Dyan Whyte RMP annual meeting 5/13/2003 TMDL Projects Updates

9 Dyan Whyte RMP annual meeting 5/13/2003 Cu/Ni in SF Bay Outcomes of the TMDL project SSOs for South Bay calculated to fully protect beneficial uses Assessment suggested no impairment by ambient levels of copper Water quality protection plan that contains pollution prevention actions and ongoing monitoring to assess status Recommended de-listing

10 Dyan Whyte RMP annual meeting 5/13/2003 Keys to Cu/Ni project success Adequate Funding and data RMP baseline monitoring provided core data set to evaluate ambient conditions San Jose and other cities contributed > $2 million to improve scientific understanding and stakeholder involvement. Stakeholder involvement Consensus reached on complex technical issues. Technical Peer Review Ensured that the science component was sound. Paved the way for consensus on the policy issues.

11 Mercury transformations in the environment: From cinnabar to the sushi bar

12 Dyan Whyte RMP annual meeting 5/13/2003 Bed Erosion460 Central Valley Watershed440 Urban Storm Water Runoff160 Guadalupe River Watershed 92 Direct Atmospheric Deposition 27 Non-Urban Storm Water Runoff 25 Wastewater 19 Total1,220 SF Bay mercury sources Mercury Load (kg/yr)

13 Mercury Sources WQ Standards (beneficial uses) Used to Evaluate Success Used to Allocate Loads Beneficial Uses Bird Egg Target Sediment Target Fish Tissue Target

14 Dyan Whyte RMP annual meeting 5/13/2003 SF Bay Mercury TMDL Implementation Plan Reduce mercury loads to SF Bay. Reduce production of methyl mercury. Perform monitoring and focused studies to: –Assess progress toward targets –Refine load estimates –Evaluate appropriateness of targets –Evaluate controllability of loads. Encourage actions that address multiple contaminants Re-visit decisions on targets, allocations, and implementation actions every years

15 Atmospheric Deposition Point Sources Urban Runoff Spills & On-Land Contaminated Sites Delta Inflow Non-Urban Runoff & Non-Point Sources Surface Waters Biologically Active Sediment Layer Buried Sediment Layer Fish Benthic Invertebrates & Plants Fish eating Wildlife Benthic & Plant eating Wildlife Humans Bioturbation, Scouring, Deposition & Resuspension, Transport, Dredging Degradation, Sorption & Desorption, Diffusion Golden Gate Outflow PCBs TMDL Conceptual Model

16 Dyan Whyte RMP annual meeting 5/13/2003 SF Bay Hg final TMDL report SF Bay PCBs preliminary and final TMDL reports Guadalupe River source assessment & conceptual model report Urban Creeks pesticide toxicity final TMDL report Napa River sediments and nutrients preliminary project report San Francisquito sediments preliminary project report Sonoma Creek sediments and nutrients preliminary project report Stay tuned for …

17 Dyan Whyte RMP annual meeting 5/13/2003 Conceptual models and SF Bay impairment assessments for: –Legacy pesticides –Selenium –Pesticide toxicity –Dioxins/furans –PAHs –PBDEs Stay tuned for …

18 Dyan Whyte RMP annual meeting 5/13/2003 Acknowledgements Thank you to the hard working TMDL staff, especially Bill Johnson Fred Hetzel Richard Looker Tom Mumley who let me pillage their slide collections


Download ppt "Developing Water Quality Solutions for SF Bay Dyan Whyte California Regional Water Quality Control Board San Francisco Bay Region."

Similar presentations


Ads by Google