Aratex Services is an industrial laundry facility. Dry cleaning operations were conducted at the facility from 1972 to 1986. Dry cleaning solvent was stored in 12 aboveground tanks inside the facility. The total capacity of the tanks was approximately 9,000 gallons. Dry cleaning operations were discontinued at the end of 1986 and all dry cleaning equipment removed from the site in 1987. In 1988 solvent vapors suspect-ed to be perchloroethylene (PCE) were noted, in response a Phase I investigation was conducted in February 1988. Analysis of soil samples confirmed the presence of PCE and other contaminants at the site. A Phase II investigation followed in June 1988 with the installation of the first six of an eventual 24 monitoring wells. A remedial investigation conducted in 1990 showed the groundwater is contaminated with PCE and its degradation products. By compound the high contaminant levels were PCE (9,140 ug/L), trichloroethylene (8,600 ug/L), 1,2-dichloroethylene (21,300 ug/L), and vinyl chloride (1,660 ug/L). Groundwater monitoring for the second half of 1998 showed the average concentrations for PCE, TCE, 1,2-DCE and VC were 32,000, 740, 8,400 and 1,700 ug/L respectively. An aquifer located approximately 40 feet beneath the surface at the site consists of fine to coarse-grained sand with high hydraulic conductivity and yields of 10 to 100 gallons per minute. Analytical data indicated, however, the contaminant plume was still within the confining layer above the aquifer.