THE GENERAL MOTORS CORPORATION OPERATES A MISCELLANEOUS METAL COATING FACILITY, WITH MOTOR MOUNT COATING LINES, AT ITS INLAND DIVISION IN DAYTON, OHIO. THE COATING LINES CON- STITUTE A MAJOR STATIONARY SOURCE. OHIO RULES 3745-21-09(U)(1)(A)(III) AND 3745-21-04 GOVERN EMISSIONS OF VOLATILE ORGANIC COMPOUNDS (VOC) BY THE INLAND FACILITY. THESE RULES WERE APPROVED BY THE ADMIN- ISTRATOR OF EPA ON JUNE 29,1982, AND SO THAT DAY BECAME A FEDERALLY-ENFORCEABLE PART OF THE OHIO STATE IMPLEMENTATION PLAN ( SIP ). THE MOTOR MOUNT COATING LINES AT THE INLAND FACILITY ARE NOT IN COMPLIANCE WITH THE OHIO STATE IMPLEMENTATION PLAN IN THAT, SINCE 12/31/82, EMISSION OF VOC FROM THE AUTO- MATIC DIP COATERS 1,2, AND 4, THE BARRETT COATER AND THE TOUCH-UP SPRAY BOOTH HAVE EXCEEDED THE APPLICABLE VOC LIMIT- ATION CONTAINED IN OAC RULE LINES EXCEED 3.5 LB VOC/GALLON COATING USED, EXCLUDING WATER AS REQUIRED BY OAC RULE 3745-21-09(U)(1)(B), WHICH IS AN ALTERNATE METHOD OF COMPLIANCE TO RULE 3745-21-09(U)(1)(A). PURSUANT TO SECTION 120, EPA IS AUTHORIZED TO RECOVER THE ECONOMIC BENEFIT OF GENERAL MOTORS' VIOLATIONS OF THE CLEAN AIR ACT.