UNO-VEN OPERATES A PETROLEUM REFINERY CONTAINING A FLUIDIZED CATALYTIC CRACKING UNIT (FCCU) WHICH VENTS EMISSIONS INTO THE ATMOSPHERE AND WHICH IS SUBJECT TO PARTICULATE EMISSIONS LIMITS DEFINED IN THE ILLINOIS STATE IMPLEMENTATION PLAN (SIP). AFTER THE FCCU FAILED STACK TESTS ON NOVEMBER 8, 1994, AND APRIL 25, 1995, BY EXCEEDING ALLOWABLE PARTICULATE EMISSIONS LIMITS, U.S. EPA FILED AN ADMINISTRATIVE COMPLAINT SEEKING PENALTIES. ON MARCH 27, 1997, THE REGION FILED A CONSENT AGREEMENT AND CONSENT ORDER SETTLING A CLEAN AIR ACT ADMINISTRATIVE PENALTY ACTION AGAINST A PETROLEUM REFINERY OWNED AND OPERATED BY THE UNO-VEN COMPANY IN LEMONT, ILLINOIS. UNDER THE CACO, UNO-VEN CERTIFIED THAT IT HAD COME INTO COMPLIANCE WITH THE ILLINOIS SIP UNDER THE CAA, AND AGREED TO PAY A $121,000 CIVIL PENALTY, AND, AS A SUPPLEMENTAL ENVIRONMENTAL PROJECT