Reduction of PCE and TCE Concentrations in Soil to Below Remedial Standards

With a total treatment time of 3 months, the application of Daramend reagent reduced concentrations of PCE and TCE below the remedial standards at this site in the northwest USA.

Contaminants Treated

Trichloroethene (TCE) and Tetrachloroethene (PCE)


Northwest USA

Situational Summary

Soil PCE and TCE concentrations were as high as 3,800 mg/kg and 220 mg/kg, respectively, which exceeded the remedial standards of 19 mg/kg and 1.2 mg/kg. Following a review of available technologies, the consultant selected Daramend technology for treatment of the soil.



Soil samples were collected and analyzed for cVOC concentrations following cycle 1 and cycle 3.  Cycle 1 results indicated that substantial reductions had been achieved after the initial treatment period.  Results of the cycle 3 sampling event confirmed concentrations of both PCE and TCE were below the remedial targets of 19 mg/kg for PCE and 1.2 mg/kg for TCE.  The total treatment time required was 3 months.