application of thermally enhanced vapor extraction at berkeley lab

Iraj Javandel and Barry Freifeld

Contact: Iraj Javandel, 510/486-6106, IJavandel@lbl.gov

Research Objectives
A plume of contaminated groundwater was found near the site of the first Berkeley Lab cyclotron. Detailed investigations have identified the source area and determined the vertical and lateral extent of the contamination in the subsurface. The contaminants are chlorinated hydrocarbons consisted mainly of perchloroethene, trichloroethene, and carbon tetrachloride. The source area is located within heterogeneous geological materials consisting of both volcanic and sedimentary rocks. The hydraulic conductivity of these materials varies between 10^-5 and 10^-9 m/s. Various technologies are being tested to study their applicability for cleaning the source area. The objective of this study was to examine the effectiveness of thermally enhanced vapor extraction in removing contaminants from the source area.

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