Challenge Below a functioning industrial laundry, significant pollution with free phase PCE and other chlorinated solvents was discovered. The chlorinated solvents had migrated through a clay till layer to a secondary sandy aquifer at 8 meters below ground. The challenge was to remediate the clay till to a level of maximum 1 mg/kg chlorinated solvents below existing buildings. Solution 40 ISTD heater vacuum wells were installed over the

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