EPA FILED A COMPLAINT AND COMPLIANCE ORDER UNDER SECTION 3008(A) OF RCRA, 42 USC 6928(A), ON JANUARY 4, 1983, AGAINST THE WYOMING REFINING COMPANY OF NEWCASTLE, WY. WRC USES STANDARD REFINING PROCESSES TO MANUFACTURE VARIOUS REFINED PETROLEUM PRODUCTS FROM CRUDE OIL. HEALTH CONCERNS ASSOCIATED WITH WRC'S MANAGEMENT OF HAZARDOUS WASTE AND CONSTITUENTS DETECTED IN THE GROUNDWATER AT THE FACILITY INCLUDE PHENOLS, LEAD, BENZENE, TOLUENE, NAPHTHALENE, FLOURIDE AND ARSENIC. MANY OF THESE CONSTI- TUENTS WERE MEASURED AT CONCENTRATIONS ABOVE EPA PRIMARY DRINKING WATER STANDARDS. POSSIBLE PATHWAYS FOR THE MIGRATION OF SURFACE HAZARDOUS WASTES INCLUDE RUNOFF INTO TWO SURFACE STREAMS THAT BISECT THE FACILITY, AND LEACHING OF WASTES IN SURFACE UNITS INTO SOIL AND GROUNDWATER. NONE OF THE LAND DISPOSAL UNITS USED BY WRC TO MANAGE HAZARDOUS WASTES WERE FITTED WITH MAN-MADE LINERS OF ANY TYPE. FROM WHAT IS KNOWN ABOUT THE HYDROGEOLO GY OF THE SITE, THE GROUNDWATER IS VERY CLOSE TO THE SURFACE THROUGHOUT THE FACILITY. THE SURFACE STREAMS BOTH RECEIVE INPUT FROM THIS SHALLOW AQUIFER. WRC'S FACILITY IS LOCATED WITHIN THE CITY LIMITS OF NEWCASTLE. IT IS NOT KNOWN IF THE AQUIFER UNDERLYING THE FACILITY IS USED FOR AGRICULTURE OR AS A SOURCE OF DRINKING WATER. EPA FILED A COMPLAINT AND COMPLIANCE