The 6-acre St. Germain Site in Taunton, Massachusetts had formerly been used as a heavy equipment staging and storage area. The former site owner operated a waste hauling business and had buried drums and impacted soils on the property from multiple offsite sources. In 1999, U.S. EPA initiated a Time Critical Removal Action at the site and subsequently excavated over 700 drums from the subsurface. In May 2000, the property owner and a nearby manufacturer were issued an Administrative Order on Consent (AOC) by the U.S. EPA and later a Notice of Responsibility (NOR) by the MassDEP. The corporate successor of that firm retained Geosyntec to perform an initial site investigation at the site in 2000. Geosyntec provided oversight for the AOC and NOR mandated excavation of 4,000 buried drums and 12,000 cubic yards of soil. During these activities, a complex mix of contaminants was identified, including petroleum hydrocarbons, chlorinated ethenes and benzenes, a number of other volatile and semi-volatile organic compounds, and proprietary chemicals.