Remediation of TCE DNAPL under an operating industrial manufacturing facility - air force plant 4 Fort Worth, TX

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Courtesy of TRS Group, Inc.

As a subcontractor to URS Corp., TRS designed, installed and operated a full-scale Electrical Resistance Heating
(ERH) remediation system covering an area of about 1/2 acre inside Building 181 at Air Force Plant 4 in Fort Worth, TX. This is the most complex application of ERH ever completed inside and underneath an operating, heavy industrial manufacturing facility. The cleanup objectives for the fullscale remediation were to reduce average TCE concentrations in soil and groundwater to 11.5 mg/kg and 10 mg/l, respectively. The maximum concentration of TCE in soil and groundwater were 2,770 mg/kg, and 285 mg/L, respectively. The groundwater remediation goal was met following five months of ERH operations and the soil remediation goal was met in November 2002, with a 90% reduction in contamination levels.

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