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Update

Sediment Quality Advisory Committee Meeting August 12, 2004 Sacramento Chris Beegan beegc@swrcb.ca.gov 916 341 5577. Update. Public Workshop held July 7, 2004 to report on the status of sediment quality objectives. Presentation available at www.swrcb.ca.gov/bptcp/sediment.html

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Update

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  1. Sediment Quality Advisory Committee MeetingAugust 12, 2004 SacramentoChris Beeganbeegc@swrcb.ca.gov 916 341 5577

  2. Update • Public Workshop held July 7, 2004 to report on the status of sediment quality objectives. Presentation available at www.swrcb.ca.gov/bptcp/sediment.html • The Scientific Steering Committee Meeting held at SCCWRP on August 3, 4 2004. Steve Bay to present a summary.

  3. Update • New Technical Report • Ranasinghe, J. Ananda, B. Thompson, R.W. Smith, L. Lowe and K.C. Schiff. 2004.Evaluation of Benthic Assessment Methodology in Southern California Bays and San Francisco Bay. Southern California Coastal Water Research Project, Westminster, CA. (432) Available at: www.sccwrp.org/pubs/techrpt.htm

  4. Purpose and Goals • SQOs must protect beneficial uses. • Develop SQOs that protect benthic communities from pollutant related direct effects. • Develop at a minimum, a framework for assessing indirect effects related to food web impacts to shellfish, fish, wildlife and humans. • Policy used to determine if sediment is impaired.

  5. SQO Applications • SQOs will be used by RWQCBs to determine if beneficial uses are being maintained. • 303(d)/305(c) lists. • TMDL prioritization

  6. Other SQO Applications • SQOs could be us: • Assess the magnitude and extent of impairment. • Assessing impacts from point source discharges • Assess the effectiveness of bmps for controlling SW and NPS water quality. • As targets for pollutant related sediment TMDLs.

  7. Linking BUs to SQOs • What beneficial uses would be protected • What is targeted for protection • Benthic Communities • Human health • Wildlife • How beneficial uses would be protected through the development of target specific SQOs • Defines a healthy or protected condition for each target • Target specific statement of protection

  8. Measures of Condition • Specific parameters measured to assess condition of target • Indicator parameters should relate to condition of target (sediment toxicity, community measures such as diversity and abundance) • General parameters required when regional tools have not been developed or adequately validated. • Other specific parameters for application of regional tools. • Describe how sediment should be collected • And how parameters are measured

  9. Translating Raw Data into Useful Information • What tools or metrics would be used to transform raw data into meaningful results • General tools and metrics that could be applied statewide • Regional or waterbody specific tools or metrics

  10. Establishing Thresholds • What indicator specific thresholds would be used as a benchmark of reference, or protected condition • Method for establishing reference condition • Method for developing thresholds • Thresholds that may apply statewide or may only apply to regions • Thresholds represent consistent level of protection regardless of where they are applied.

  11. Integration • How the indicator results are integrated (WoEA) • Establish scale of response that is applied equally to all lines of evidence. • Describe methodology for combining scaled response into a single result that would determine if targets are protected or impaired (meeting narrative objectives). • Integration should minimize uncertainty in decision-making process to the extent that is practical.

  12. Special Considerations • Application of SQOs in waterbodies where TMDLs have been adopted or in the process of being adopted • SQOs required as of targets TMDLs that address sediment quality • Direct effect SQOS applied as targets for TMDLs that focus on impaired benthos • In-direct effect SQOs applied as targets for TMDLs prepared to mitigate human health and wildlife risk from sediment associated food web pollutants.

  13. Special Considerations • Application of SQOs to dredged material management program • Temporary storage of dredged materials from navigation dredging actions (Ongoing discharge) • Application of SQOs to in-bay dispersal-type disposal sites (Ongoing discharge) • Water Quality Certifications

  14. Special Considerations • Policy issues and objectives that could be developed under Phase 2 • Issues that cannot be fully explored/developed in time frame • Policy that requires further refinement

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