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History of Research Project on CCA-Treated Wood Presented February 11, 2004 TAG Meeting

This presentation discusses the history, funding, and team involved in a research project on CCA-treated wood. The project explores the disposal, leaching, and soil impacts of CCA-treated wood, as well as chemical alternatives and sorting methods. The presentation also includes information on related studies, such as mulch studies and synthetic rainfall testing.

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History of Research Project on CCA-Treated Wood Presented February 11, 2004 TAG Meeting

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  1. History of Research Project on CCA-Treated WoodPresented February 11, 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

  3. Core Team of Faculty Researchers Additional Faculty Researchers Helena Solo-Gabriele, Ph.D., P.E., Timothy Townsend, Ph.D. Assoc. Prof., Civil/Environ. Engrg Assoc. Prof., Environ/Solid Waste Engrg 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

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

  5. Original Motivation For Project Ash Disposal Problem, 1995

  6. FCSHWM Year 1 (1996-1997)

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

  8. Year 1: Disposal Forecast (Preliminarily Updated 2003)

  9. FCSHWM Year 2 (1997-1998)

  10. 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)

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

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

  13. In-Service: Soil Impacts

  14. FDEP Industrial SCTL Not CCA-Treated In-Service: Soil Impacts Chemicals Do Leach from CCA-treated Wood During In-Service Use

  15. In Service: Soil Impacts

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

  17. Synthetic Rainfall Chemical Alternatives: Leaching

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

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

  20. TCLP Limit Leaching of CCA-Treated Wood

  21. TCLP Limit Leaching of CCA-Treated Wood TCLP

  22. Questions? technical reports available at: www.ccaresearch.org hmsolo@miami.edu ttown@ufl.edu

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