Former dry cleaner source area remediation of PCE in soil and groundwater El Centro, California

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Courtesy of TRS Group, Inc.

TRS Group, Inc. (TRS) was retained by Secor International, Inc. (SECOR now owned by Stantec Engineering) to perform an Electrical Resistance Heating (ERH) remediation of tetrachloroethene (PCE) DNAPL in soil and groundwater at the former Wright’s Dry Cleaners property in El Centro, CA. The Standard Fixed Price (SFPR) contract required removal of DNAPLs from soil and groundwater within the treatment volume. A total of 261,805 kW-hr was applied to the subsurface during 71 days of operations. Final confirmatory soil sampling indicated the average soil concentrations of PCE were reduced to less than 0.1 milligrams per kilogram (mg/kg) and that the concentration of total chlorinated volatile organic compounds (CVOCs) had been reduced by 99.99%. Additionally, initial groundwater sampling showed that total CVOC concentration in groundwater was reduced by an average of 99.8%.

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