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SIERRA CLUB v. U.S. ENVTL. PROTECTION AGENCY

No. 21-3057.

60 F.4th 1008 (2023)

SIERRA CLUB; Ohio Environmental Council; Donna Ballinger; Marilyn Wall, Petitioners, v. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY; Michael S. Regan, Administrator, U.S. Environmental Protection Agency, Respondents, State of Ohio, Intervenor.

United States Court of Appeals, Sixth Circuit.

Decided and Filed: February 10, 2023.

Attorney(s) appearing for the Case

ARGUED: D. David Altman , ALTMANNEWMAN CO. LPA, Cincinnati, Ohio, for Petitioners Wall and Ballinger. Megan Wachspress , SIERRA CLUB, Oakland, California, for Petitioners Sierra Club and Ohio Environmental Council. Elliot Higgins , UNITED STATES DEPARTMENT OF JUSTICE, Washington, D.C., for Respondent United States Environmental Protection Agency. Samuel C. Peterson , OFFICE OF THE OHIO ATTORNEY GENERAL, Columbus, Ohio, for Intervenor. ON BRIEF: D. David Altman , Justin D. Newman , Amy J. Leonard , ALTMANNEWMAN CO. LPA, Cincinnati, Ohio, Megan Wachspress , SIERRA CLUB, Oakland, California, for Petitioners. Elliot Higgins , UNITED STATES DEPARTMENT OF JUSTICE, Washington, D.C., for Respondent United States Environmental Protection Agency. Samuel C. Peterson , Benjamin M. Flowers , Aaron Farmer , OFFICE OF THE OHIO ATTORNEY GENERAL, Columbus, Ohio, for Intervenor. Eric B. Gallon , Robert L. Brubaker , PORTER, WRIGHT, MORRIS & ARTHUR LLP, Columbus, Ohio, Christine Rideout Schirra , Frank L. Merrill , BRICKLER & ECKLER LLP, Columbus, Ohio, for Amici Curiae.

Before: GRIFFIN, GIBBONS, and STRANCH, Circuit Judges.

OPINION

This case arises under the provisions of the Clean Air Act that give the Environmental Protection Agency (EPA) the authority to establish national ambient air quality standards (NAAQS) for certain pollutants. To achieve, maintain, and enforce those standards, every state is required to develop a...

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