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History of Research Project on CCA-Treated Wood Presented October 22, 2004 TAG Meeting

History of Research Project on CCA-Treated Wood Presented October 22, 2004 TAG Meeting. Funding Received from Florida Center for Solid and Hazardous Waste Mngt. Florida Power and Light Sarasota County/ Florida Department of Environmental Protection Florida International University/NIEHS

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History of Research Project on CCA-Treated Wood Presented October 22, 2004 TAG Meeting

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  1. History of Research Project on CCA-Treated WoodPresented October 22, 2004TAG Meeting

  2. Funding Received from Florida Center for Solid and Hazardous Waste Mngt. Florida Power and Light Sarasota County/ Florida Department of Environmental Protection Florida International University/NIEHS Rutgers University/NIEHS University of Florida FICESS Center/NSF Public Health Trust, CA

  3. Core Team of Faculty Researchers Additional Faculty Researchers Gabriel Bitton, Ph.D. David Hahn, Ph.D. Professor, Env. Micro/Tox Assoc. Prof., Mechanical – Laser Yong Cai, Ph.D. Stuart Shalat, Sc.D. Assist. Prof., Chemistry Assoc. Prof., Epidemiology/Pesticides Lora Fleming, M.D., Ph.D. Assoc. Prof., Epidemiology/PH Helena Solo-Gabriele, Ph.D., P.E., Timothy Townsend, Ph.D. Assoc. Prof., Civil/Environ. Engrg Assoc. Prof., Environ/Solid Waste Engrg

  4. Today’s Faculty Presenters Helena Solo-Gabriele, Ph.D., P.E., C.Y. Wu, Ph.D. Assoc. Prof., Civil/Environ. Engrg Assoc. Prof., Environ/Air Pollution Control Engineering Tim Townsend, Ph.D., P.E. Tim Townsend, Ph.D., P.E. Assoc. Prof., Environ/Solid Waste Engrg Assoc. Prof., Environ/Solid Waste Engrg Joint Meeting

  5. Approx. 32 Students Supported on CCA Projects Since Beginning of Project Today’s Student Presenters Gary Jacobi, M.S. candidate from U.Miami Tomoyuki “Shiba” Shibata, Ph.D. candidate from U.Miami Amy Omae, M.S. candidate from U.Miami Brajesh Dubey, Ph.D. candidate from U.Florida

  6. Original Motivation For Project Ash Disposal Problem, 1995

  7. FCSHWM Year 1 (1996-1997)

  8. Year 1: C&D Wood Testing • Processed Wood at C&D Recycling Facilities 6% CCA by Weight

  9. Arsenic (metric tons) Year 1: Disposal Forecast (Updated 2004)

  10. FCSHWM Year 2 (1997-1998)

  11. Year 2: Ash Leaching Studies • Leaching Studies, ash • Hazardous when CCA-treated wood represents 5% of wood burned • Solvents can extract metals from ash, citric acid very promising (40 to 100% As removed)

  12. Year 2: Sorting Untreated Treated • Sorting Studies, Laboratory • Chemical stains, low capital costlabor intensive • X-ray methods, high capital costsuitable for on-line system

  13. Outline of Work Since 1999 • In-Service Issues • Impacts on Soil • Runoff and Infiltration (NIEHS funding) • Playgrounds and Children* (NIEHS funding) • Disposal • Leaching New and Weathered Wood • Chemical alternatives to CCA • Sorting Methods* • Mulch Studies*

  14. In-Service: Soil Impacts

  15. In Service: Soil Impacts

  16. Experimental Set-up rainwater runoff collection vessel precipitation deck sandy soil, 2 ft Infiltrating rainwater gravel

  17. Results: As in Soil Rainfall Arsenic Ground surface U.S.EPA SSL : 0.4 mg/kg FL SCTLS for residential area: 0.8 mg/kg FL SCTLS for industrial area: 3.7 mg/kg

  18. Results: As in Soil Rainfall Arsenic Ground surface 6 months U.S.EPA SSL : 0.4 mg/kg FL SCTLS for residential area: 0.8 mg/kg FL SCTLS for industrial area: 3.7 mg/kg

  19. Results: As in Soil Rainfall Arsenic Ground surface 13 months U.S.EPA SSL : 0.4 mg/kg FL SCTLS for residential area: 0.8 mg/kg FL SCTLS for industrial area: 3.7 mg/kg

  20. Results: As in Soil Rainfall Arsenic Ground surface 18 months U.S.EPA SSL : 0.4 mg/kg FL SCTLS for residential area: 0.8 mg/kg FL SCTLS for industrial area: 3.7 mg/kg

  21. As in the runoff water (ug/L) As in the runoff water (ug/L) 50 ug/L for Arsenic (U.S.EPA: Drinking water standard, FL criteria for surface water quality classification) As in the infiltrated water (ug/L) As in the infiltrated water (ug/L)

  22. Disposal • Leaching New and Weathered Wood • Chemical Alternatives to CCA • Sorting Methods • Mulch Studies*

  23. Leaching of CCA-Treated Wood

  24. TCLP Limit Leaching of CCA-Treated Wood TCLP

  25. Field-Scale Leaching 2 Monofills / 2 C&D / 2 MSW

  26. Synthetic Rainfall Chemical Alternatives: Leaching

  27. Less Toxic CCA ACQ CC CDDC CBA Chemical Alternatives: Aquatic Toxicity

  28. Sorting Test Kits Laser Untreated Treated x-ray x-ray x-ray

  29. Work Products • 8 FCSHWM reports, Finalized (available on-line) • 1 FCSHWM reports, Draft (available on-line) • 2 FCSHWM reports, Pending • 9 peer-reviewed journal articles published and 1 in press, 1 accepted, 3 submitted • Plus approx 40 conference proceedings and other papers

  30. Questions? technical reports available at: www.ccaresearch.org hmsolo@miami.eduttown@ufl.educywu@ufl.edu

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