U.S. EPA Contaminated Site Cleanup Information (CLU-IN)


U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

Trichloroethylene (TCE)

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Work Groups

Interstate Technology & Regulatory Council (ITRC) Dense Nonaqueous Phase Liquids Team
Contact: Eric Hausamann
Dept. of Environmental Conservation
625 Broadway, 11th Floor
Albany, NY 12047
P 518-402-9759 / F 518-402-9722
eghausam@gw.dec.state.ny.us

The DNAPLs Team began in 1999 to foster a better understanding of the applicability, cost, and limitations of technologies for characterizing and remediating dense, nonaqueous-phase liquids. DNAPLs are a significant problem to groundwater supplies when released as discarded industrial solvents or waste. Once released into the subsurface, DNAPLs exist as residual droplets, or ganglia, in the unsaturated zone and, depending on the nature of the release, can form insoluble pools in the saturated zone. Because of these characteristics, conventional remediation and characterization technologies have been mostly unsuccessful in removing substantial amounts of these contaminants.

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