=NATURE OF THE CASE= DIETZGEN IS A PAPER COATER WHICH USES VOLATILE ORGANIC COMPOUNDS (VOC) TO MANUFACTURE DRAFTING PAPER, FILM, VELLUM, AND TRANSPARENCIES. DIETGEN 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 12/31/82. THESE EMISSIONS CONTRIBUTE TO OZONE FORMATION IN THE CHICAGO AIR QUALITY CONTROL REGION, WHICH IS A PRIMARY NONATTAINMENT AREA FOR OZONE. ----------- =CAUSE OF ACTION= DIETZGEN'S EMISSIONS ARE IN VIOLATIONOF THE ILLINOIS SIP. BECAUSE DIETZGEN IS A MAJOR SOURCE, U.S. EPA IS AUTHORIZED TO RECOVER THE ECONOMIC BENEFIT OF NONCOMPLIANCE UNDER SECTION 120 OF THE CLEAN AIR ACT. =PROPOSED REMEDY= IN ORDER TO ACHIEVE COMPLIANCE WITH THE ILLINOIS SIP, DIETZGEN MUST EITHER INSTALL CONTROL EQUIPMENT OR REDUCE THE AMOUNT OF VOC EMITTED BY REFORMULATING THE COATINGS USED.