THE ENDICOTT WELLFIELD SUPERFUND SITE (THE SITE ) IS A NATIONAL PRIORITIES LIST SITE LOCATED NEAR THE SOUTHWESTERN BOUNDARY OF THE VILLAGE OF ENDICOTT, BROOME COUNTY, NEW YORK. MOST OF THE SITE IS LOCATED ON LAND OWNED BY THE VILLAGE OF ENDICOTT (THE VILLAGE ). IN APRIL 1983, THE NEW YORK STATE DEPT. OF ENVIRONMENTAL CONSERVATION ( NYSDEC ) PERFORMED A STUDY AT THE SITE. THE RESULTS INDICATED THAT THE SOURCE OF CONTAMINATION IN THE RANNEY WELL WAS LOCATED WEST OR NORTHWEST OF THE WELL. BECAUSE OF THIS INVESTIGATION A PURGE WELL WAS INSTALLED TO INTERCEPT AND CAPTURE THE CONTAMINATION PLUME AFFECTING THE WELL. BETWEEN MARCH 1986, AND JULY 1987, NYSDEC CONDUCTED A REMEDIAL INVESTIGATION AND FEASIBILITY STUDY ( RI/FS ) TO DETERMINE THE SOURCE OF CHEMICALS ENTERING THE RANNEY WELL. A RECORD OF DECISION WHICH DOCUMENTED THE SELECTED REMEDIAL ACTION FOR THE SITE WAS ISSUED BY EPA ON 9/25/87. THE REMEDIAL ACTION IN THE ROD INCLUDED THE INSTALLATION OF AN AIR STRIPPING TOWER ON THE RANNEY WELL DISCHARGE AND CONTINUATION OF THE USE OF THE EXISTING PURGE WELL. SINCE THE ISSUANCE OF THE 1987 ROD, EPA HAS HAD LEAD RESPONSIBILI- ITY FOR THE SITE. THE RI/FS CONCLUDED THAT THE INFORMATION TO DATE WAS INADEQUATE TO DETERMINE THE SOURCE FOR THE VOCS IN THE GROUND WATER. IN THE ROD, EPA INDICAT