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Development of Sediment Quality Objectives for California Bays and Estuaries

Development of Sediment Quality Objectives for California Bays and Estuaries. Steven Bay Southern California Coastal Water Research Project (SCCWRP) steveb@sccwrp.org. Project Update. Project Activities. Science Team. Contracts and work initiated with most of the key technical partners

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Development of Sediment Quality Objectives for California Bays and Estuaries

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  1. Development of Sediment Quality Objectives for California Bays and Estuaries Steven Bay Southern California Coastal Water Research Project (SCCWRP) steveb@sccwrp.org Project Update

  2. Project Activities

  3. Science Team • Contracts and work initiated with most of the key technical partners • San Francisco Estuary Institute (SFEI) • Database development, benthic indices • Moss Landing Marine Laboratories (MLML) • Benthic indices, sampling methods • Marine Pollution Studies Laboratory (MPSL) • Toxicity methods • EXA Data and Mapping • Database development • Other consultants will be added for specific elements

  4. Scientific Steering Committee • Dr. Todd Bridges, U.S. Army Corps of Engineers, ERDC • Dr. Dan Dauer, Old Dominion University • Tom Gries, Washington Dept. of Ecology • Chris Ingersoll, U.S. Geological Survey • Dr. Scott Ireland, U.S. EPA, Office of Water • Dr. Peter Landrum, NOAA, Great Lakes Environmental Research Lab • Edward Long, ERL Environmental • Donald D. MacDonald, MacDonald Environmental Services • Gail Sloane, Florida Department of Environmental Protection • Dr. Dominic DiToro, Hydroqual Inc. • Dr. Paul Dayton, Scripps Inst. of Oceanography

  5. Direct Effects • Sediment quality database development • Chemical effects analysis • Toxicity method comparison • Benthic community assessment tool development • Integration of triad into objectives

  6. Database • Revised data format to accommodate bioaccumulation data and simplify structure • Incorporating additional data • San Diego Bay • Newport Bay • San Francisco Bay (RMP & others) • EMAP 1999 & 2000 • Inventoried additional San Francisco Bay data for inclusion (SFEI) • Dredging studies • Military base clean up studies • Richmond Harbor and airport expansion studies • Updated inventory will be distributed for comment in February

  7. Benthic Community Assessment Tool Development • Refine Benthic Response Index (BRI) • Improve effects gradient data for Southern California • Additional index validation • Investigate applications for San Francisco Bay • Investigate alternative assessment tools for other regions of State • San Francisco Bay approach • RIVPACS • Compare/standardize sampling methods • Sampling gear • Sieve sizes

  8. Benthic Community Assessment Tool Development • Refine Benthic Response Index • Sampled 20 “high impact” sites in summer 2003 • Joint project with SFEI to examine BRI utility for SF Bay

  9. Benthic Community Assessment Tool Development • Investigate alternative tools • Joint effort with SFEI to examine SF Bay approach • Joint effort with TetraTech to examine RIVPACS approach • Evaluation of community zonation along Pacific Coast

  10. Benthic Community Assessment Tool Development • Comparison of sampling methods • Comparison of sieve sizes underway • Over 100 samples from multiple habitats • Planning for sampling gear comparison • Compare grab types and cores • Sampling planned for summer 2004

  11. Toxicity Method Comparison • Evaluation of candidate chronic sediment toxicity test methods • 15 stations from So. Calif. and S.F. Bay • 6 methods will be compared to acute amphipod toxicity, chemistry, and benthos • Amphipod growth and reproduction • Polychaete growth • Copepod reproduction • Juvenile clam growth • Oyster embryo cell integrity • Mussel embryo development • Data from first phase testing received • Subsequent studies will depend upon results

  12. Indirect Effects • Evaluation of models for sediment-fish transfer • Identify most useful approaches • Understand data needs and uncertainty • Case study to link sediment contamination to human/predator risk • Site-specific data for selected contaminants and receptors • Identify methods and data needs for application in other areas • Working with SFEI to develop scope and workplan

  13. Method Manuals • Field sampling • Benthic sampling method comparisons • Chemical contamination • Toxicity • Chronic test comparison • Bioaccumulation potential • Benthic community impact • Assessment tool development • Information management

  14. Assessment • Sediment Quality Summary • Describe extent and magnitude of impacts in bays and estuaries • Assessment based on draft objectives Toxicity • Requires representative data • EMAP, NOAA, Bight surveys

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