NATURE OF THE CASE: CCF MANUFACTURES WALLTEX, WALL COVERINGS, AUTOMOBILE UPHOLSTERY & RELATED PRODUCTS AT ITS FACILITY IN COLUMBUS, OH. TWO COAL FIRED BOILERS USED TO PRODUCE PRO- CESS STEAM & HEAT FOR THE FACILITY EMMIT PARTICULATE MATTER & ARE SUBJECT TO OH REGULATIONS AP-3-11(LIMITING PARTICULATE EMISSIONS) & AP-3-07(LIMITING OPACITY OF EMISSIONS). CAUSE OF ACTION: ON 10/18/76 US EPA ISSUED AN NOV TO CCF PURSUANT TO SEC 306 OF THE CAA, CITING VIOL'S OF AP-3-11 & AP-3-07 STACK TESTS CONDUCTED IN 7/75, 1/75 & 5/77 ALL DEMOSTRAT- ED PARTICULATE EMISSIONS IN EXCESS OF THOSE PERMITTED BY AP-3-11. VISIBLE EMISSIONS READINGS TAKEN ON 9/18/76; 9/19/76 & 1/13/77, ALL PROVIDED EVIDENCE OF VIOL'S OF AP-3-07. CCF HAS REFUSED TO INSTALL THE POLLUTION CONT- ROLS NECESSARY TO COMPLY W/AP-3-11 & AP-3-07. IT HAS BASED ITS DEFENSE ON A DIFFERENT INTERPRETATION OF THE REGULATION. PROPOSED REMEDY: ON 7/16/81, OH EPA ISSUED TWO PERMITS TO OPERATE FOR CCF'S BOILER'S #1 & #2. THE PERMIT'S REQUIRE CCF TO OPERATE ITS BOILERS AT APPROX 50% CAPACITY, IN COMPLIANCE W/NEW OH REGULATIONS WHICH HAVE BEEN SUBMITTED TO EPA AS PROPOSED SIP REVISIONS. EPA HAS PROPOS