1. SECTION 113(D) OF THE CLEAN AIR ACT ( CAA ), AS AMENDED, 42 U.S.C. SECTION 7413(D). 2. ARCO CHEMICAL COMPANY P.O. BOX 30 CHANNELVIEW, HARRIS COUNTY, TEXAS 77530 3. RESPONDENT WAS IN VIOLATION OF SECTION 112 OF THE CAA BY FAILING TO PROPERLY IDENTIFY THE DATES OF PROCESS UNIT SHUTDOWNS AND FAILING TO COMPLY WITH THE STANDARDS FOR OPEN-ENDED VALVES OR LINES. 4. RELIEF SOUGHT PURSUANT TO SECTION 113(D) OF THE CAA, EPA PROPOSES A CIVIL PENALTY OF $13,750.