Klozur® Used for In situ Soil Blending Treatment at Brownfield Site

Treatment of a former manufacturing site contaminated with a mixture of chlorinated solvent VOCs and petroleum VOCs in the vadose soil zones and shallow groundwater

Type of Site

Former drum manufacturer


Exo Tech Inc.


Cullman, AL

Contaminants Treated

PCE, TCE, vinyl chloride, cis-1,2-DCE, tetrachloroethene, xylenes, ethylbenzene


Initial assessment identified a 4,500 square foot source was contaminated from approximately 2 to 12 feet with a maximum of 180ppm of TCE, 6.6 ppm of DCE and lesser concentrations of vinyl chloride, tetrachloroethene, xylenes, ethylbenzene, and related VOCs. Due to the high clay content and other site factors, lime active Klozur® Persulfate was chosen to provide the most effective oxidation treatment. 


Approximately 1,500 tons of impacted soils were treated in place. The results of confirmatory sampling indicate VOC concentrations were reduced to non-detect levels above and below the water table.