Previous Remediation Efforts Initially 822 tons of contaminated soil were removed by excavator and bucket auger. Starting in 2004, a multi- phase extraction (MPE) system was installed as an interim remedial measure. Between April and December 2004, approximately 16,000 pounds (lbs) of VOC’s were removed from the vadose and shallow groundwater zones. In October 2004, a remedial action plan and WDR permit were approved to inject sodium and p

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