ISOTEC Case Study No. 65 ISCO SOIL MIXING PROGRAM: TCE TREATMENT UTILIZING SODIUM HYDROXIDE ACTIVATED SODIUM PERSULFATE Former Manufacturing Facility Northern Wisconsin INTRODUCTION ISOTEC was retained to provide technical support during implementation of a in-situ chemical oxidation (ISCO) soil mixing treatment program utilizing sodium hydroxide activated sodium persulfate (ALK-ASP) at a former manufacturing facility in northern Wisconsin to address trichloroethene (TCE) impacted soils. Concentrations of TCE in site soils were as high as 140,000 micrograms per kilogram (ug/kg) within the upper clay unit and as high as 27,500 ug/kg within the lower sand unit. Designation of the target treatment areas and initial reagent dosage was calculat

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