THE COMPLAINT WAS AMENDED TO DELETE FACILITIES IN WISCONSIN AND INDIANA AS ALLEGED VIOLATORS ON MARCH 15, 1993. THE AMENDED COMPLAINT ALLEGES IMPROPER INVENTORY CONTROL AT 16 REMAINING SERVICE STATIONS IN MICHIGAN. AT THE CENTER OF THE DISPUTE IS WHETHER 1/4 INCH TANK CONVERSION CHARTS WILL PROVIDE ADEQUATE INFORMATION TO DETECT SIGNIFICANT LEAKS OF GASOLINE FROM UNDERGROUND STORAGE TANKS AS OPPOSED TO 1/8 INCH TANK CONVERSION CHARTS WHICH EPA CLAIMS ARE NECESSARY. THE APPLICABLE REG. 40 CFR 280.43 (A) THAT INVENTORY MUST BE ACCURATE ENOUGH TO MEASURE A RELEAS E OF AT LEAST 1% OF FLOW THROUGH PLUS 130 GALLONS ON A MONTHLY BASIS...