History of Research Project on CCA-Treated Wood Presented February 11, 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 Rutgers University/NIEHS University of Florida FICESS Center/NSF

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

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

Original Motivation For Project Ash Disposal Problem, 1995

FCSHWM Year 1 ( )

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

Year 1: Disposal Forecast (Preliminarily Updated 2003)

FCSHWM Year 2 ( )

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)

Year 2: Sorting  Sorting Studies, Laboratory  Chemical stains, low capital cost labor intensive  X-ray methods, high capital cost suitable for on-line system UntreatedTreated

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

In-Service: Soil Impacts

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

In Service: Soil Impacts

Disposal  Chemical Alternatives to CCA  Sorting Methods  Leaching New and Weathered Wood  Mulch Studies*

Chemical Alternatives: Leaching Synthetic Rainfall

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

Laser x-ray UntreatedTreated Test Kits x-ray Sorting

Leaching of CCA-Treated Wood TCLP Limit

TCLP Limit Leaching of CCA-Treated Wood TCLP

Questions? technical reports available at: