PCB 79-266

		PCB 79-266 03/06/80 Order UNITED STATES STEEL CORPORATION V. ENVIRONMENTAL PROTECTION AGENCY
		PCB 79-266 05/29/80 Order UNITED STATES STEEL CORPORATION v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
		PCB 79-266 09/18/80 Order UNITED STATES STEEL CORPORATION v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
		PCB 79-266 12/03/81 Order UNITED STATES STEEL CORPORATION v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
		PCB 79-266 12/04/80 Order UNITED STATES STEEL CORPORATION V. ILLINOIS ENVIRONMENTAL PROTECTION
		PCB 79-266 Order 01/13/83 UNITED STATES STEEL CORPORATION v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY