Daramend® was selected for treatment of soil impacted by PCE and TCE at the site as a result of operations by prior owners.
PCE and TCE concentrations in the soil were as high as 3,800 mg/kg and 220 mg/kg, respectively. Treatment of the 335 tons of impacted soil using Daramend® treatment required anaerobic-aerobic cycling of the soil to generate strong reducing conditions followed by a short aerobic polishing.
After the first cycle, the concentrations of both PCE and TCE were reduced substantially. After the third cycle, the PCE concentration was reduced to below the remedial standard of 19mg/kg and the TCE concentrations was reduced to below the remedial standard of 1.2 mg/kg.