12/31/90: SYNOPSIS OF CASE: GULF CHEMICAL AND METALLUR- GICAL CORPORATION (GCMC) IS A CATALYST RELAMATION FACILITY IN FREEPORT, TX THAT RECLAIMS METALS FROM SPENT OIL REFINERY CATALYSTS. GCMC WAS ISSUED A NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) PERMIT BY EPA SURSUANT TO SECT 40 OF THE CWA ( THE ACT ), 33 U.S.C. 1342 ON SEPT 30, 1987. ON FEBRUARY 18, 1988, EPA ENTERED A CONSENT ORDER WITH GCMC RESOLVING A CIVIL ACTION IN THE US DISTRICT COURT, SOUTHERN DIST OF TEXAS, FOR NPDES PERMIT EFFLUENT VIOLATION OF AMMONI NITROGEN AT OUTFALL 001 WITH A COMPLIANCE DATE TO MEET FINAL AMMONIA LIMITS AT BOTH OUTFALLS (001 AND 002), SIMULT- ANEOUSLY.