EPA REGION V HAS GATHERED CREDIBLE EVIDENCE TO SUPPORT THE FOLLOWING VIOLATIONS UNDER THE CAA AT THE SUNOCO OREGON, OHIO REFINERY:PSD AND NSR VIOLATIONS FOR MODIFICATIONS AT THE FCCU; NSPA VIOLATIONS FOR MODIFICATIONS AT THE FCCU AND SRU; NSPS EMISSION LIMIT VIOLATIONS AT FUEL GAS COM- BUSTION DEVICES; NESHAP VIOLATIONS FOR BENZENE WASTE OPERATIONS; NSPS LEAK DETECTION AND REPAIR VIOLATIONS.