ON JANUARY 26, 1999, EPA AND ITS CONTRACTORS CONDUCTED AN INSPECTION OF BAYWAY'S BALTIMORE FACILITY. DURING THE INSPECTION SEVERE COORODING ON TANK # 6'S BOTTOM PLATE WAS NOTED. THIS CONDITION POSED A SUBSTANTIAL THREAT OF A RELEASE. FACILITY PERSONNEL WERE INFORMED AND EPA ISSUED A UAO ON 2/9/99 ORDERING THE TANK OF SERVICE, INSPECTIONS AND REPAIRS, UNDER EPA SUPERVISION, AS NEEDED. THE TANK HAS BEEN EMPTIED AND BAYWAY HAS INDICATED THAT IT INTENDS TO COMPLY WITH UAO.