1. SECTION 113(D) OF THE CLEAN AIR ACT, AS AMENDED ( CAA ), 42 U.S.C. SEC. 7413(D) AND 40 C.F.R. SECS. 22.13 AND 22.` 43(B). 2. OZARK-MAHONING COMPANY 5101 WEST 21ST STREET TULSA, OKLAHOMA 3. THE RESPONDENT VIOLATED NESHAP REGULATIONS BY FAILING TO TEST THE INACTIVE PHOSPHOGYPSUM STACK FOR RADON EMMIS- SIONS WITHIN THE TIME SPECIFIED, AND FAILING TO REPORT THE RESULTS OF THE TESTING TO EPA WITHIN A SPECIFIED TIME THEREBY VIOLATING SECTION 112 OF THE CAA. 4. RELIEF SOUGHT PURSUANT TO SECTION 113(D) OF THE CAA, EPA PROPOSES A PENALTY OF $135,000.00.