NATURE OF THE CASE DIETZGEN IS A PAPER COATER WHICH USES VOLATILE ORGANIC COMPOUNDS (VOC) TO MANUFACTURE DRAFTING PAPER, FILM, VELLUM AND TRANSPARENCIES. DIETZGEN EMITS OVER 94.8 TONS PER YEAR OF VOC. THE ILLINOIS STATE IMPLEMENTATION PLAN (SIP) RE- QUIRED DIETZGEN TO REDUCE THOSE EMISSIONS TO UNDER 51.1 TONS PER YEAR BY DECEMBER 31, 1982. THESE EMISSIONS CON- TRIBUTE TO OZONE FORMATION IN THE CHICAGO AIR QUALITY CON- TROL REGION, WHICH IS A PRIMARY NONATTAINMENT AREA FOR OZONE CAUSE OF ACTION DIETZGEN'S EMISSIONS ARE IN VIOLATION OF THE ILLINOIS SIP AND, BECAUSE DIETZGEN IS A MAJOR SOURCE, U.S. EPA IS REQUIRED TO BRING SUIT TO ABATE THE VIOLATIONS AND RECOVER CIVIL PENALTIES, UNDER SECTION 113 OF THE CLEAN AIR ACT, 42 U.S.C. 7413. PROPOSED REMEDY IN ORDER TO ACHIEVE COMPLIANCE WITH THE ILLINOIS SIP, DIETZGEN MUST EITHER INSTALL CONTROL EQUIPMENT SUCH AS AFTERBURNERS OR CARBON ADSORPTION EQUIPMENT, OR REDUCE THE AMOUNT OF VOC EMITTED BY REFORMULATING THE COATINGS USED. NATURE OF 1/27/84 ADDED REFERRAL DIETZGEN MANUFACTURES DRAFTING PAPER, COATED PLASTIC FILMS AND OTHER PAPER PRODUCTS AT ITS DES PLAINES FACILITY. THESE PRODUCTS ALL GO THROUGH A PAPER COATING PROCESS BY WHICH A PLASTIC FILM IS APPLIED TO A C