TROJAN CORPORATION HAS OWNED AND OPERATED THE FACILITY, WHERE IT MANUFACTURES EXPLOSIVES, FROM ABOUT JUNE 1982 TO THE PRESENT. ENSIGN-BICKFORD COMPANY HAS ALSO OWNED THE FACILITY FROM SINCE 1986 WHEN ENSIGN-BICKFORD COMPANY PURCHASED CERTAIN ASSETS FROM TROJAN. BOTH TROJAN AND ENSIGN-BICKFORD COMPANY ARE WHOLLY OWNED SUBSIDIARIES OF ENSIGN-BICKFORD INDUSTRIES, INC. A STATE IEPA INSPECTION ON JUNE 20, 1990, REVEALED THE PRESENCE OF 32 DRUMS OF WASTE IN AN AREA CALLED THE BONEYARD. DURING A SUBSEQUENT INSPECTION BY IEPA ON SEPTEMBER 21, 1991, THE DRUMS WERE DISCOVERED TO HAVE BEEN MOVED TO A STAGING AREA. ENSIGN-BICKFORD PROVIDED MANIFESTS FOR SOME OF THESE DRUMS SHOWING THAT THEY WERE SHIPPED OFF-SITE IN JANUARY 1992. THE WASTES WERE MANIFESTED AS D008 (LEAD TC), D001 (IGNITABILITY), D009 (MERCURY TC), D028 (TC FOR 1-2 DICHOLORETHANE) AND F002, F003, AND F005 (SPENT SOLVENTS). THE ENSIGN-BICKFORD COMPANY CLAIMS THE DRUMS WERE ON SITE WHEN IT PURCHASED PROPERTY FROM TROJAN AND CLAIMS THAT IT WAS NOT RESPONSIBLE FOR THE MATERIALS PLACED THERE BY TROJAN.