THE F/HBRGW SITE CONSISTS OF PROPERTIES OWNED AND OPERATED UPON BY THE DEFENDANT, THE CADMUS CORPORATION AND AREAS BENEATH SAID PROPERTIES AND NEARBY PROPERTIES TO WHICH THE PLUME OF CONTAMINATED GROUND WATER HAS SPREAD. THE SITE IS LOCATED IN ST. CHARLES COUNTY, MISSOURI, 25 MILES WEST OF ST. LOUIS AND THREE MILES NORTHWEST OF THE THE CITY OF ST. CHARLES AND SOUTH OF THE CITY OF CAMPVILLE. THE ELM POINT WELL FIELD, THE CADMUS CORPORATION FACILITY LIES ADJACENT TO, SOUTH OF, AND HYDROLOGICALLY UPGRADIENT TO DEFENDANT'S PROPERTY. THE PRIMARY SOURCE OF CONCERN BECAUSE OF THE GROUND WATER CONTAMINATION, LIES APPROXIMATELY 1800 FEET NORTHEAST OF DEFENDANT'S PROPERTY AND PROVIDES A POR- TION OF THE POTABLE WATER SUPPLY FOR THE CITY OF ST. CHARLES AND SURROUNDING AREAS. THE EPA AND THE MDNR BEGAN INVESTIGATIONS IN 1974, UPON DISCOVERY THAT THE DEFENDANT WAS INVOLVED IN THE REPROCESS- ING OR TREATMENT OF WASTES, SOME OF WHICH WERE CONTAMINATED WITH PCBS. BEGINNING IN 1962, WHEN DEFENDANT INITIATED ITS OPERATIONS AS THE FINDETT SERVICES COMPANY, THE DEFENDANT RECYCLED, REPROCESSED OR TREATED HEAT TRANSFER FLUIDS, HYDRAULIC FLUIDS, SOLVENTS AND PLATINUM CATALYSTS FOR VARIOUS INDUS- TRIES. DEFENDANT DISCONTINUED THE REPROCESSING OF MATERIALS CONTAINING PCBS AT CONCENTRATIONS OF GREATER THAN 50 PPM IN 1974.