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Washington State Department of Ecology King County Department of Natural Resources

Washington State Department of Ecology King County Department of Natural Resources. Control of Toxic Chemicals in Puget Sound Assessment of Selected Toxic Chemicals in the Puget Sound Basin, 2007-2011. What will be covered …. Background on the Puget Sound Toxics Loading Analysis

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Washington State Department of Ecology King County Department of Natural Resources

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  1. Washington State Department of Ecology King County Department of Natural Resources Control of Toxic Chemicals in Puget SoundAssessment of Selected Toxic Chemicals in the Puget Sound Basin, 2007-2011 Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  2. What will be covered … • Background on the Puget Sound Toxics Loading Analysis • Key Elements of the Assessment Report • Sources • Loading and Pathways • Hazard Evaluation • Approach to Prioritizing Near-Term Actions Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  3. Puget Sound Toxics Loading Analysis (PSTLA) The overall goal of PSTLA … … is to provide scientific information that will help guide decisionsabout how to best to direct and prioritizeresources and strategies for controlling toxic chemicals in the Puget Sound basin. Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  4. Phased approach Targeting priority toxics sources (2008-2011) • LOADING STUDIES • Surface runoff • Atmospheric deposition • Wastewater discharges • Ocean exchange • Groundwater • Pelagic Food Web • PPCPs in WWTPs • Primary Sources • Field Data and models Improved load estimates (2008-2010) • Surface runoff • Wastewater discharges • Ocean data • T-BiOS • Sediment-Biota Flux • Data and models Initial estimates and data gaps (2007) • Surface runoff • Atmospheric deposition • Wastewater discharges • Combined sewer overflows • Spills to marine waters • best available information Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  5. Toxic Chemicals in Puget Sound • Where do they come from? • How much is being delivered? • What delivery pathways contribute to the loading? • What is the relative toxic hazard posed by these chemicals at observed concentrations? Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  6. Chemicals of Concern Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  7. Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  8. Toxic Chemicals in Puget Sound • Where do they come from? Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  9. Primary Sources • Initial Releases from Sources • Preliminary Estimates • Anthropogenic Releases • Ongoing Releases • Does Not include: • Natural Sources • Legacy Pollution • Pathways Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  10. Total Annual Releases (t) • Petroleum 10,000 • Zinc 1,000 • Lead 500 • Total PAH 300 • Copper 200 • Triclopyr 100 • DEHP 40 • Total PCB 2 • Cadmium 1 • Arsenic 0.8 • Total PBDE 0.7 • Mercury 0.5 • Nonylphenol 0.2 • Dioxins/Furans 0.00001 Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  11. PAH Releases Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  12. Copper Releases Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  13. Toxic Chemicals in Puget Sound • How much is being delivered? • What delivery pathways contribute to the loading? Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  14. Total Annual Loads (t) • Petroleum 330 - 550 • Zinc 140 - 240 • Copper 33 - 80 • Arsenic 14 - 25 • Lead 4 - 12 • DEHP 2 - 3 • Total PAH 0.2 - 1 • Triclopyr 0.6 – 0.7 • Cadmium 0.05 – 0.5 • Mercury 0.1 – 0.4 • Total PBDE 0.03 – 0.05 • Nonylphenol 0.02 • Total DDT 0.002 – 0.03 • Total PCB 0.003 – 0.02 • Dioxins/Furans NA Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  15. Surface Runoff Atmos. Dep. Ground Water POTWs As Cd Cu Pb Hg Zn Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  16. Surface Runoff Atmos. Dep. Ground Water POTWs PCBs PBDE DDT LPAH HPAH cPAH Total PAH DEHP Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  17. Toxic Chemicals in Puget Sound • What is the relative toxic hazard posed by these chemicals at observed concentrations? Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  18. Hazard Evaluation • Media/Receptors: • Surface Water • Sediments • Tissue Residue • Wildlife • Human Health • Compared Observed Concentrations (90th Percentile) to Thresholds • “Priority 1” if Observed (90th %ile) Exceeds Threshold Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  19. Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  20. Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  21. Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  22. No Overlap: Priority 2 Level of Concern Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  23. Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  24. Overlap: Priority 1 Level of Concern Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  25. Hazard Evaluation – Priority 1 COCs • Not Analyzed: • PBDEs • Triclopyr • Petroleum Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  26. Prioritizing Near-Term Actions Priority 1 Hazard for at least two categories Large Opportunity for Source Control Substantial Loading to Puget Sound Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  27. COCs and Sources for Near-Term Actions • Copper • Urban and Agricultural Pesticides • Roof Runoff • Copper and Zinc • Phthalates and Cadmium • PAHs • Creosote treated Wood • Woodstoves • Vehicle Emissions • Petroleum • Motor Oil Drips and Leaks • Minor Gasoline Spillage at Pump • Marine Engine Oil and Gas Leaks Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  28. Lessons Learned • Stay Goal-Oriented • What is most important information to have? • Provides direction for approach • Natural Sources and Legacy Contribution • Mass balance • Expand List of Chemicals Addressed • Approach from effects perspective? Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  29. Primary Sources Project Team • Holly Davies • Jim Maroncelli • Tanya Roberts • Dave Serdar • Assessment Project Team • Jenée Colton • Richard Jack • Deb Lester • Dale Norton • Dave Serdar Thanks to: • Drew Ackerman • Joel Baker • Josh Baldi • Robert Black • Jon Butcher • Jim Cowles • Michael Cox • Jay Davis • Karen Dinicola • Rob Duff • Joan Hardy • Lon Kissinger • Andrew Kolosseus • Carol Kraege • Andrea LaTier • Sandie O’Neill • Anthony Paulson • Charles Pitz • Scott Redman • Mindy Roberts • Michael Rylko • Nathaniel Scholz • Randy Shuman • Alex Stone • Ken Stone • Ian Wesley • Jim West Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  30. This work was funded largely through an EPA National Estuary Program Grant Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

  31. What’s Next? • Primary Sources and Assessment Reports will be available: • November 3, 2011 • Washington State Department of Ecology Homepage • www.ecy.wa.gov • Click on Saving Puget Sound Ecology - Presentation for Salish Sea Conference - 10/25/2011 - Preliminary Results

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