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Field Scale Deck Study

Field Scale Deck Study. Untreated wood. CCA-treated wood. 1 Tomoyuki Shibata , 1 Helena M. Solo-Gabriele, 2 Young Cai, and 3 Timothy Townsend 1 University of Miami , 2 Florida International University, and 3 University of Florida. Objective: Environmental assessment

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Field Scale Deck Study

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  1. Field Scale Deck Study Untreated wood CCA-treated wood 1Tomoyuki Shibata, 1Helena M. Solo-Gabriele, 2Young Cai, and 3Timothy Townsend 1University of Miami, 2Florida International University, and 3University of Florida Objective: Environmental assessment on in-service CCA-treated wood

  2. rain Experimental Set-up Deck sandy soil, 60 cm Runoff leachate gravel Infiltrated water

  3. Materials & Methods Rain gauge Monitoring since September 2002 Rainfall Runoff leachate Soil Infiltrated water

  4. Materials & Methods Analyses Water samples AA Soil Environmental Engineering Laboratory University of Miami

  5. Results & Discussions Rainfall < 0.001 mg/L for As and Cr Runoff leachate Ground surface

  6. Results & Discussions Guidelines: 0.1 (Cr) 0.05 (As) Runoff Leachate  1st year   2nd year  3rdyear

  7. Results & Discussions FL SCTL residential 2.1 mg/kg FL SCTL Industrial 12 mg/kg ? 60.0 Rainfall Runoff leachate Ground surface

  8. Results & Discussions Guidelines: 0.1 (Cr) Guidelines: 0.05 (As) Infiltrated Water  1st year   2nd year  3rdyear

  9. Results & Discussions Mass Balance • (%) from the CCA deck Most As leached was captured in the top soil

  10. Acknowledgements Funding • FL Center for Solid & Hazardous Waste Management • National Institute for Environmental Health Science (Grant #211 ES 11181) Extra help • Dr. Wimal Suaris, Gary Jacobi, Tara Fishbain, Caitlin Feikle, Geoff Klug, Colleen Block, Yuki Sotome, and Alicia Muniz: University of Miami

  11. Thank you Any questions?

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