MANVILLE SALES CORPORATION (MSC) OPERATES A FIBERGLASS INSULATION MANUFACTURING FACILITY IN WILLOWS, CALIFORNIA. MSC HOLDS AN EPA - ISSUED PREVENTIONOF SIGNIFICANT DETERI- CRATION (PSD) PERMIT WHICH LIMITS PARTICULATE MATTER (PM) EMISSIONS. BASED ON SOURCE TESTS CONDUCTED BY THE STATE, EPA, IN JULY 1987, ISSUED AN NOV FOR VIOLATIONS OF THE PSD PERMIT AND THE CALIFORNIA SIP. SUBSEQUENT TO THE ISSUANCE OF THE NOV, BOTH THE STATE AND MSC CONDUCTED ADDITIONAL SOURCE TESTS. SOME OF THESE TESTS RESULTS INDICATED COMPLIANCE WITH THE PM LIMIT; OTHERS, INCLUDING THE LATEST IN APRIL, 1988, INDICATED CONTINUING VIOLATIONS. THE REFERRAL REQUESTS THAT DOJ FILE A CIVIL ACTION, SEEKING CIVIL PENALTIES AND INJUNCTIVE RELIEF, UNDER SECTION 113 OF THE CLEAN AIR ACT AGAINST MSC FOR VIOLATION OF THE CALIFORNIA SIP.