THIS ADMINISTRATIVE ORDER IS ISSUED AGAINST THE MAXUS CORP. DBA DIAMOND SHAMROCK FOR THE CORRECTION OF A SERIOUS ENVIRONMENAL PROBLEM AT A FACILITY LOCATED WEST OF GLENROCK, WYOMING KNOWN AS THE POWDER RIVER CRUDE OIL PROCESSORS. AS A CURRENT OR FORMER USER OF THE POWDER RIVER CRUDE OIL PROCESSORS WHICH IS KNOWN TO HAVE HANDLED WASTE DEPOSITED AT THIS FACILITY. EPA HAS FOUND THAT THE DEPOSIT OF THIS WASTE MAY PRESENT AN IMMINENT AND SUBSTANTIAL ENDANGERMENT TO HEALTH OR LTHE ENVIRONMENT.