THE SITE IS A LARGE PLUME OF VOC-CONTAMINATED GROUNDWATER EXTENDING OVER 5 MILES THROUGH THE CITY OF ROCKFORD, ILLINOIS. EPA FIRST BECAME INVOLVED IN 1989 WHEN RESIDENTIAL WELL WATER SHOWED VOC CONTAMINATION. EPA AND IEPA CONDUCTED SEVERAL INITIAL REMOVAL ACTIONS TO EXTEND MUNICIPAL WATER TO AFFECTED RESIDENTS. IEPA, THROUGH A COOPERATIVE AGREEMENT WITH EPA, CONDUCTED A RI/FS FOR THE GROUNDWATER OPERABLE UNIT. IN SEPTEMBER 1995, EPA AND IEPA ISSUED A ROD FOR THE GROUNDWATER OPERABLE UNIT WHICH CALLS FOR ADDITIONAL WATER EXTENSIONS AND REMEDIATION OF GROUNDWATERR SOURCE AREAS. FIELD WORK FOR THE DELINEATING THE SOURCE AREAS WILL TAKE PLACE THIS SPRING.