Accelerated cleanup of carbon tetrachloride in a radiologically contaminated site at the Hanford Site

Radioactively-contaminated acidic aqueous wastes and organic liquids were discharged to the soil column at three disposal sites within the Hanford Nuclear Reservation, resulting in the carbon tetrachloride contamination of the ground water and unsaturated soils. A CERCLA Expedited Response Action (ERA) has been initiated for the removal of carbon tetrachloride from the unsaturated soils to mitigate further contamination of the ground water. Based on the contaminant nature and distribution, site physical characteristics, and technology pilot tests, soil vapor extraction with above-ground treatment of the soil vapor was chosen as the preferred remedial technology for the ERA