BRIEF SYNOPSIS OF CASE INLAND STEEL COMPANY OWNS AND OPERATES A FULLY INTE- GRATED IRON AND STEEL MANUFACTURING FACILITY AT EAST CHICAGO, INDIANA. WASTEWATER IS GENERATED AT MANY STAGES IN THE PRODUCTION PROCESS. THE WASTEWATER CONTAINS BIO- CHEMICAL OXYGEN DEMAND (BOD), OIL AND GREASE (O&G), TOTAL SUSPENDED SOLIDS (TSS), FECAL COLIFORM, TOTAL CYANIDE, TOTAL PHENOL, AMMONIA AND HEAVY METALS. INLAND STEEL COMPANY IS P RESENTLY OPERATING PURSUANT TO A NATIONAL POLLUTANT DISCHARG E ELIMINATION SYSTEM (NPDES) PERMIT WHICH EXPIRES ON FEBRU- ARY 28, 1989. THE PERMIT AUTHORIZES INLAND TO DISCHARGE FROM ITS FACILITY TO RECEIVING WATERS - INDIANA HARBOR AND THE INDIANA HARBOR SHIP CANAL. THE PERMIT FURTHER REQUIRES INLAND STEEL COMPANY TO SAMPLE AND TEST ITS EFFLUENT TO INSURE COMPLIANCE WITH LIMITATIONS IN THE PERMIT. EPA INVESTIGATORS AUDITED INLAND STEEL COMPANY'S LABOR- AOTRY PROCEDURES IN THE SPRING OF 1984 AND NOTED NUMEROUS DEFICIENCIES WHICH CALL INTO QUESTION THE SELF-MONITORING RESULTS REPORTED BY INLAND STEEL COMPANY FOR MANY YEARS. ITS DEFICIENCIES OCCURRED IN SAMPLE COLLECTION, HOLDING TIME, PRESERVATION TECHNIQUES, AND LABORATORY METHODOLOGIES FOR FIVE-DAY BIOCHEMICAL OXYGEN DEMAND (BOD), TOTAL SUS- PENDED SOLIDS (TSS), AMMONIA, TOTAL CYANIDE, TOTAL PHENOL, AND HEAVY METALS. ADDITIONALLY, DEFICIENCIES OCCUR IN CALIBRATION OF THERMOMETERS; MAINTENAN