THIS SITE IS A FORMER PRIVATE LANDFILL THAT ACCEPTED MUNICIPAL SOLID WASTE, AS WELL AS WASTE FROM NEARBY COMMERICAL AND INDUSTRIAL CONCERNS. THE PRIMARY CONTAMINANTS OF CONCERN AT THE SITE ARE THE FOLLOWING, WHICH ARE FOUND IN GROUNDWATER BENEATH THE SITE AND IN A GROUNDWATER PLUME EXTENDING AT LEAST 3800 FEET OFF-SITE: BENZENE, CHLOROFORM, 1,2 DCA, TRANS 1-2 DCE, PCE, TCE AND VINYL CHLORIDE. ON 9/27/96 EPA SENT SPECIAL NOTICE LETTERS TO 58 PRPS, OFFERING THEM THE OPPORTUNITY TO NEGOTIATE FOR PERFORMANCE OF THE REMEDIAL DESIGN AND REMEDIAL ACTION FOR THE SITE. THE FOLLOWING REMEDY WAS SELECTED BY EPA AND THE WISCONSIN DNR: OPERATION AND MAINTENANCE OF THE EXISTING LANDFILL GAS AND LEACHATE EXTRACTION SYSTEMS; MAINTENANCE OF THE EXISTING SINGLE BARRIER CAP OVER THE LANDFILL; INSTITUTIONAL CONTROLS; CONSTRUCTION AND OPERATION OF A GROUNDWATER EXTRACTION, TREATMENT AND