PCB 79-160

		PCB 79-160 01/22/81 Order UNITED STATES STEEL CORPORATION V. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
		PCB 79-160 03/19/81 Order UNITED STATES STEEL CORPORATION v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
		PCB 79-160 05/01/80 Order UNITED STATES STEEL CORPORATION v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
		PCB 79-160 05/28/81 Order UNITED STATES STEEL CORPORATION v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
		PCB 79-160 07/10/80 Order UNITED STATES STEEL CORPORATION v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
		PCB 79-160 09/04/80 Order UNITED STATES STEEL CORPORATION v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
		PCB 79-160 11/20/80 Order UNITED STATES STEEL CORPORATION v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY
		PCB 79-160 Order 01/13/83 UNITED STATES STEEL CORPORATION v. ILLINOIS ENVIRONMENTAL PROTECTION AGENCY