THE SITE, WHICH IS LOCATED IN UNION CITY, INDIANA, CONSISTS OF THE LITTLE MISSISSINEWA RIVER, ITS ASSOCIATED FLOODPLAIN, A PORTION OF THE UNION CITY CEMETERY AND A PORTION OF HARTER PARK. THE LITTLE MISSISSINEWA RIVER FLOWS THROUGH HARTER PARK. HARTER PARK IS 51 ACRES AND IS LOCATED IN THE NORTH- ERN SECTION OF THE SITE. APPROXIMATELY 8.6 ACRES OF THE PARK, INCLUDING A HORSE TACK, IS CONSIDERED TO BE WITHIN THE SITE. THE CEMETERY, WHICH IS ABOUT 26 ACRES, IS LOCATED SOUTH OF HARTER PARK. ABOUT 2.5 ACRES OF THE CEMETERY IS INCLUDED IN THE SITE. THE REMAINING LAND SURROUNDING THE SITE IS UTILIZED FOR A MIX OF INDUSTRIAL, RESIDENTIAL AND AGRICULTURAL PURPOSES. THE WESTINGHOUSE FACILITY, NOW OWNED BY VIACOM, FACILITY IS LOCATED ON WESTINGHOUSE ROAD LESS THAN ONE HALF MILE WEST OF UNION CITY. WESTINGHOUSE OPERATED A SMALL MOTOR MANUFAC- TURING PLANT NEAR THE SITE FROM CIRCA 1950 TO 1986. A.O. SMITH PURCHASED THE FACILITY IN 1986. WESTINGHOUSE REPUR- CHASED THE FACILITY IN JANUARY 1987. HYDRAULIC MECHANICS EMPLOYED IN THE MANUFACTURING PROCESS AT THE WESTINGHOUSE FACILITY USED VARIOUS LUBRICATING OILS CONTAINING PCBS. IN ADDITION, PAINTS AND SOLVENTS WERE USED DURING THE MANUFAC- TURING PROCESS. RECORDS INDICATE THAT AN UNDETERMINED NUMBER OF OBSOLETE PAINT BARRELS, PAINT SLUDGE, AND OILS WERE BURIED IN THE NORTHEAST CORNER OF THE PARKING LOT BETWEEN 1965 AND 1970. OTHER WASTES