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Draft Outline for Bay Margins Conceptual Model

Draft Outline for Bay Margins Conceptual Model. Presented to the CFWG June 10, 2009. Three Main Pieces. Review of existing information Summary of present conceptual understanding Recommendation for next steps. 1. Review of existing information. Local information: Contaminated site cleanup

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Draft Outline for Bay Margins Conceptual Model

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  1. Draft Outline for Bay Margins Conceptual Model Presented to the CFWG June 10, 2009

  2. Three Main Pieces • Review of existing information • Summary of present conceptual understanding • Recommendation for next steps

  3. 1. Review of existing information • Local information: • Contaminated site cleanup • Alameda NAS, Hunters Point, Moffet Field, San Leandro Bay, Richmond Field Station • Watershed data • Loads, soils, etc. • Bay data • Estimating margins relative to Bay proper • Trends - can we say anything about degradation and attenuation? • Comparison to other estuaries (short narrative)

  4. 2. Summary of conceptual understanding • Linking margins to impairment • Mobilization from watersheds • Delivery to nearshore areas (margins) • Fate on margins • Burial, degradation, uptake to foodweb • Release from margins to open Bay • Transfer from open ay to margins • Forecasting recovery • Why are sites wtill contaminated? • Loading? Slow degradation? Slow flushing? • Is monitored recovery a viable option? • Degradation and attenuation • What are the high leverage pathways? • Where are contaminants entering the food web?

  5. 3. Recommendations for next steps • Desire for a “general margin model” • What is it? How do we get there? • Grid model development • Link to watershed studies • Link to Bay/Ocean modeling • Suggested future studies • Fieldwork to support models • Fieldwork to support monitored recovery

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