THIS CASE INVOLVES VIOLATIONS OF A CONSENT DECREE ENTERED ON AUGUST 23, 1993 (1993 DECREE) IN THE WESTERN DISTRICT OF PENNSYLVANIA (CIVIL ACTION NO. 80-1172) WITH RESPECT TO THE SHENANGO, INC. NEVILLE ISLAND FOUNDARY IN ALLEGHENY COUNTY, PENNSYLVANIA (THE FACILITY ). THE FACILITY IS ENGAGED IN THE PRODUCTION OF FURNACE COKE IN ONE COKE OVEN GAS CONTAINI NG H2S, CS2 AND COS WHICH, WHEN COMBUSTED, RELEASE SO2, A CRITERIA POLLUTANT, TO THE AMBIENT AIR. IN ORDER TO REDUCE THE AMOUNT OF S02 EMITTED TO THE ATMOSPHER, THE FEDERALLY ENFORCEABLE PENNSYLVANIA STATE IMPLEMENTATION PLAN ( SIP ) LIMITS THE TOTAL SULPHUR CONTENT (EXPRESSED AS H2S) IN COKE OVEN GAS PRIOR TO ITS COMBUSTION. THE FEDERAL LAWS AND REGULATIONS APPLICABLE TO THIS ACTION INCLUDE SECTIONS 110 AND 113(B)(2) OF THE ACT U.S.C. SECTION S 7410 AND 7413 AD 7413(B)(2). CIVIL ACTION 80-1172 WAS BROUGHT BY THE UNITED STAES UNDER THE AUTHORITY OF SECTION 113(B)(1) ALLEGING VIOLAITONS BY THE FACILITY OF ARTICLE XX, RULES AD REGULATIONS OF THE ALLEGHENY COUNTY HEALTH DEPARTMENT, AIR POLLUTION CONTROL, (THE ALLEGHENY SIP ), WH ICH WERE ANE ARE PART OF THE FEDERALLY-ENFORCEABLE PENNSYLVANIA STATE IMPLEMENTATION PLAN ( PENNSYLVANIA SIP ) APPROVED BY EPA PURSUANT TO SECTION 110 OF THE CLEAN AIR ACT, 42 U.S.C. SECTION 7410. THE PRIMARY BASIS FOR THE RQUESTED FILING OF A COMTEMPT MOTION AGAINST SHENANGO SEEKING THE