304 Risk Assessment and Prediction of Contaminant Bioavailability in Soils and Sediments

Oral Session
S02 Soil Chemistry

The extent to which contaminants are bioavailable has significant implications on human and ecological exposure risk and potential remediation of contaminated soils and sediments. Presentations in this session will focus on (1) the ability of contaminant speciation methods to measure and/or predict bioavailability to human and ecological receptors in contaminated soils and sediments, (2) the ability of soil remediation treatments, including active capping of sediments, to decrease contaminant bioavailability to human and/or ecological receptors, and (3) the use of soil chemical, bioavailability, and toxicological data in making adjustments to human and ecological risk assessment.

Cosponsor(s):

Soils & Environmental Quality
Wednesday, November 3, 2010: 8:55 AM-11:30 AM
Long Beach Convention Center, Room 202A, Second Floor

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Organizers:
Anna Knox and Ronald Checkai
Presiders:
Anna Knox and Ronald Checkai
8:55 AM
Selenium Leaching Kinetics and in-Situ Control.
Paul Ziemkiewicz, West Virginia University
9:10 AM
Introductory Remarks
9:30 AM
Effect of Active Caps On Contaminant Bioavailability – Measurement and Prediction of the Bioavailable Pool of Contaminants in Sediments.
Anna Knox, Savannah River National Laboratory; Michael Paller, Savannah River National Laboratory; Kenneth Dixon, Savannah River National Laboratory
10:00 AM
Soil Invertebrate and Terrestrial Plant Based Toxicity Benchmarks: Bioavailability and Ecological Soil Screening Levels for Energetic Materials.
Ronald Checkai, U.S. Army Edgewood Chemical Biological Center; Roman Kuperman, U.S. Army Edgewood Chemical Biological Center - Environmental Toxicology; Michael Simini, U.S. Army Edgewood Chemical Biological Center - Environmental Toxicology; Carlton T. Phillips, U.S. Army Edgewood Chemical Biological Center - Environmental Toxicology; Sylvie Rocheleau, Biotechnology Research Institute - National Research Council of Canada; Jalal Hawari, Biotechnology Research Institute - National Research Council of Canada; Geoffrey I. Sunahara, Biotechnology Research Institute - National Research Council of Canada
10:15 AM
Predicting Trace Element Bioavailability in Contaminated Soils.
Nicholas Basta, The Ohio State University; Elizabeth Dayton, The Ohio State University; Christopher Holloman, The Ohio State University; Shane Whitacre, The Ohio State University; Stan Casteel, University of Missouri- Columbia; Philip Jardine, University of Tennessee; Tonia Melhorn, Oak Ridge National Laboratory; Amy L. Hawkins, NAVFAC ESC
10:30 AM
Bioavailable and Bioaccessible Pools of Soil Bound as: Results From Extraction Methods, X-Ray Absorption Spectroscopy, and in-Vivo Feeding Studies.
Bradley Miller, US EPA ,ORD, NRMRL; Kirk Scheckel, US EPA ,ORD, NRMRL; Karen Bradham, US EPA, ORD, NERL; David Thomas, US EPA, ORD, NERL; Stan Casteel, Univeristy of Missouri- Columbia
10:45 AM
Break
11:00 AM
Fractional Bio-Accessibility: A New Tool with Revised Recommendations for Pb Risk Assessment for Urban Garden Soils and Superfund Sites.
Munir Zia, Fauji Fertilizer Company Limited; Eton Codling, USDA-ARS; Kirk Scheckel, US-Environmental Protection Agency; Rufus Chaney, USDA-ARS
11:15 AM
Pb in Carrots Grown On Pb-Rich Soils Is Mostly within the Xylem.
Rufus Chaney, USDA-ARS; Eton Codling, USDA-ARS; Kirk Scheckel, US- Environmental Protection Agency; Munir Zia, Technical Services Department
11:30 AM
Mercury Distribution and Transformation In Roots at the Abandoned Hg Mine Site, New Idria, CA.
Hagar Siebner, Stanford University; Matt Newville, University of Chicago; Gordon E. Brown Jr., Stanford University
11:45 AM
Adjourn
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