GENERAL MOTORS CORPORATION ( GM ) OWNS SEVERAL UNDERGROUND STORGAGE TANKS ( USTS ). GM HAS VIOLATED RCRA AND THE REGULATIONS PROMULGATED PURSUANT THERETO BY FAILING TO REPORT SUSPECTED RELEASES, CONDUCT PROPER INVENTORY CONTROL, MONITOR FOR RELEASES ON HAZARDOUS SUBSTANCE USTS, MONITOR FOR RELEASES ON PETROLEUM USTS, TEST CORROSION PROTECTION EQUIPMENT, CONFIRM SUSPECTED RELEASES FROM USTS, BEGIN CORRECTIVE ACTION AFTER CONFIRMING RELEASES FROM USTS, CONDUCT ANNUAL LINE TESTS ON MONTHLY MONITORING FOR PRESSURIZED AND SUCTION PIPING, SUPPLY AUTOMATIC LEAK DETECTORS FOR PRESSURIZED LINES, AND MAINTAIN EQUIPMENT IN ACCORDANCE WITH MANUFACTURER'S INSTRUCTIONS.