THE EAU CLAIRE MUNICIPAL WELL FIELD (ECMWF) SITE PURSUANT TO SECT 107A OF CERCLA OF 1980, 42 USC S9601 ET SEQ., AS AMENDED BY THE SUPERFUND AMENDMENTS AND REAUTHORIZATION ACT OF 1986, PUB. L. NO. 99-499, 100 STATE. 1613 (1986). THE ECMWF SITE, WHICH WAS LISTED ON THE NPL IN SEPT. OF 19 85, IS LOCATED IN EAU CLAIRE, WI. USEPA INITIATED REMEDIAL INVESTIGATION/FEASIBILITY STUDY ACTIVITIES IN OCT. OF 1984 TO INVESTIGATE THE CONTAMINATED GROUNDWATER AT THE SITE AND EVALUATE REMEDIAL ACTIVITIES HAVE INCLUDED CONSTRUCTION OF A PACKED COLUMN AIR STRIPPER, TEMPORARY PROVISION OF BOTTLED WATER TO PRIVATE WELL USERS AND PERMANENT HOOK-UP OF THOSE PRIVATE WELL USERS TO A MUNICIPAL WATER SUPPLY. USEPA'S RE- MEDIAL ACTIVITIES AT THE SITE COMMENCED IN JULY OF 1986. AS OF AUG. 31, 1991 USEPA'S UNREIMBURSED COST TOTALLED $3,772, 026.15. PURSUANT TO SECTION 113G2B OF CERCLA, AN ACTION FOR THE RE COVERY OF COSTS INCURRED BY USEPA FOR A REMEDIAL ACTION MUST BE COMMENCED WITHIN SIX YEARS OF INITIATION OF PHYSICAL ON- SITE CONSTRUCTION OF THE REMEDIAL ACTION. USEPA RECOMMENDS, ACCORDINGLY, THAT A COMPLAINT PURSUANT TO SECTION 107A OF CERCLA SEEKING ALL OF USEPA'S UNREIMBURSED PAST COSTS BE FILED ON OR BEFORE JULY 1, 1992 IN ORDER TO AVOID A STATUTE OF LIMITATIONS BAR.