Document R 71-023 / PCB 73-372 / PCB 73-373 / PCB 73-374 / PCB 73-375 / PCB 73-376 / PCB 73-377 / PCB 73-378 / PCB 73-379 12/06/73 Order

EMISSION STANDARDS / ENVIRONMENTAL PROTECTION AGENCY v. COMMONWEALTH EDISON COMPANY

  Document R 71-023 / R 77-015 / R 78-014 / R 78-015 / R 78-016 / R 78-017 12/13/79 Order

IN THE MATTER OF SULFUR DIOXIDE AND PARTICULATE REGULATIONS, RULES 204 (C) (1) (A), 204 (C) (1) (D) AND 203 (G) (1) OF CHAPTER 2

  Document R 71-023 04/08/76 Order

IN THE MATTER OF: EMISSION STANDARDS

  Document R 71-023 04/12/73 Lawton Jr. Supplemental Opinion

IN MATTER OF: AIR POLLUTION CONTROL REGUlATIONS EMISSION STANDARDS

  Document R 71-023 04/13/72 Opinion

In the Matter of EMISSION STANDARDS

  Document R 71-023 07/07/77 Opinion

IN THE MATTER OF EMISSION STANDARDS

  Document R 71-023 07/07/77 Order

IN THE MATTER OF EMISSION STANDARDS

  Document R 71-023 07/07/77 Young Dissent

IN THE MATTER OF: EMISSION STANDARDS

  Document R 71-023 07/24/75 Order

IN THE MATTER OF: AIR POLLUTION CONTROL REGULATIONS EMISSION STANDARDS

  Document R 71-023 07/26/73 Order

REPUBLIC STEEL CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY / INTERNATIONAL HARVESTER COMPANY v. ENVIRONMENTAL PROTECTION AGENCY / CLARK OIL & REFINING CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY / UNITED STATES STEEL CORPORATION v. ENVIRONMENTAL PROTECTION AGENCY / INTERLAKE, INC. v. ENVIRONMENTAL PROTECTION AGENCY

  Document R 71-023 08/21/80 Opinion and Order

IN THE MATTER OF: SULFUR DIOXIDE REGULATIONS, RULE 204(c)(1)(A) and RULE 204(c)(1)(D) OF CHAPTER 2

  Document R 71-023 11/08/72 Opinion AND Order

In the Matter of In the Matter of: EMISSION STANDARDS

  Document R 77-015 / R 78-014 / R 78-015 / R 78-016 / R78-017 / and Remand Proceedings of R 71-023 02/07/80 Order

IN THE MATTER OF PROPOSALS TO AMEND RULES 203 (g) (1), 204 (a) (1), and 204 (c) (1) (A) OF THE AIR POLLUTION CONTROL RULES AND REGULATIONS

  Document R71 23 110571 PrpsdAirRegs,Dscsns,Pt2
  Document R71 23 GenlDscusn Pt2
  Document R71 23 Walsh Tstmny