THIS ORDER IS ISSUED AGAINST THE BUTLER OIL COMPANY FOR THE CORRECTION OF A SERIOUS ENVIRONMENTAL PROBLEM AT A FACILITY LOCATED WEST OF GLENROCK, WYOMING KNOWN AS THE POWDER RIVER CRUDE OIL PROCESSORS, AS A PAST CONTRIBUTOR FOR WASTE AND/ OR OTHER MATERIALS DEPOSITED AT THIS FACILITY. THE EPA HAS FOUND THAT WASTE MATERIAL AT THIS FACILITY MAY PRESENT AN IMMINENT AND SUBSTANTIAL ENDANGERMENT TO HEALTH OR TO THE ENVIRONMENT.