UNITED STATES COURT OF APPEALS FOR THE THIRD CIRCUIT _______________

No. 20-2215 _______________

CLEAN AIR COUNCIL, Appellant

v.

UNITED STATES STEEL CORPORATION _______________

On Appeal from the United States District Court for the Western District of Pennsylvania (D.C. No. 2:19-cv-01072) District Judge: Hon. Marilyn J. Horan _______________

Argued: January 29, 2021

Before: RESTREPO, BIBAS, and PORTER, Circuit Judges _______________

ORDER _______________

The panel has revised the opinion issued on June 21, 2021, and fixed a typographical

error that appeared at page 16. The Clerk is directed to file the amended opinion. This

amendment does not change the filing date. The judgment remains the same.

ATTEST:

s/ Patricia S. Dodszuweit Clerk

Dated: June 22, 2021 cc: All Counsel of Record