AFG OWNS AND OPERATES A FLOAT GLASS FURNACE AT ITS GLASS MANUFACTURING PLANT IN VICTORVILLE, CALIFORNIA. PURSUANT TO THE PSD PERMIT UNDER WHICH THE FURNACE OF 10.5 POUNDS PER HOUR (3-HOUR AVERAGE) FROM THE FURNACE EXHAUST STACK. IN THE FIRST QUARTER OF 1988, AFG HAD 917 HOURS OF SO2 EMISSIONS IN EXCESS OF THE PERMIT LIMIT. REGION IX'S INVESTIGATION INDICATES THAT THE EXCESS EMISSIONS WERE CAUSED BY OPERATION AND MAINTENANCE PROBLEMS AND THAT AFG'S PERFORMANCE HAS IMPROVED IN RECENT QUARTERS. BECAUSE REGION IX DOES NOT BELIEVE THAT A MAJOR CAPITAL EXPENDITURE WILL BE REQURED TO MAINTAIN COMPLIANCE IN THE FUTURE, REGION IX PLANS TO RESOLVE THIS CASE VIA CONSENT DECREE THAT WILL CALL FOR A PENALTY IN THE RANGE OF $10,000 - 16,000 FOR AFG TO IMPROVE OPERATIONS AND MAINTEN- ANCE PRACTICES, AND FOR STIPULATED PENALTIES FOR FUTURE VIOLATIONS OF THE SO2 LIMIT.