ON JULY 1, 1993, INSPECTORS OF THE EPA CONDUCTED AN INSPECT- ION PROMULGATED PURSUANT TO SECTION 112 OF THE CAA. DURING THE INSPECTION, THE INSPECTOR NOTED THAT A PIECE OF EQUIP- MENT, A 1/4 BLACK Y VALVE LOCATED DIRECTLY BELOW VALVE # 5304 , IN THE BENZENE EXTRACTION UNIT CONTAINED OR CONTACT- ED, OR WAS INTENDED TO CONTAIN OR CONTACT A FLUID (LIQUID OR GAS) AT LEAST 10% BENZENE BY WEIGHT AS DETERMINED ACCORDING TO THE PROVISIONS OF 40 C.F.R. SEC. 61.245(D). THE INSPECTOR ALSO NOTED THAT A PIECE OF EQUIPMENT, REFERENCED ABOVE, WAS NOT MARKED IN SUCH A MANNER THAT IT CAN BE DISTINGUISHED READILY FROM OTHER PIECES OF EQUIPMENT. BASED ON THE INSPECTION REPORT, THE FOLLOWING VIOLATIONS BY THE FACILITY AND ITS OPERATORS WERE EVIDENT: (1) FAILURE TO MARK VALVES IN VOLATILE HAZARDOUS AIR POLLUTANT (VHAP) SER- VICE; AND (2) FAILURE TO PLUG OPEN ENDED VALVES IN VHAP SER- VICE. THE PROPOSED CIVIL PENALTY IS $25,000. ADDRESS: KERR-MCGEE CENTER P.O. BOX 25861 OKLAHOMA CITY, OK. 73125