2025-20122Notice

EPA Sides Partially with Sierra Club on Arizona Plant's Dirty Air Permit

Published Date: 11/18/2025

Notice

Summary

The EPA reviewed a petition from the Sierra Club about the air pollution permit for the Apache Generating Station in Arizona. They agreed with some concerns but not all, so the permit stays mostly as is. Anyone unhappy with the decision has until January 20, 2026, to ask a court to review it.

Analyzed Economic Effects

2 provisions identified: 1 benefits, 0 costs, 1 mixed.

EPA Partly Grants Sierra Club Petition

The EPA Administrator issued an order dated September 16, 2025, that granted in part and denied in part a Sierra Club petition challenging Title V operating permit no. 69734 for the Apache Generating Station (issued by the Arizona Department of Environmental Quality to Arizona Electric Power Cooperative Inc.) in Cochise County, Arizona. The order explains the basis for the decision.

Court Review Deadline for Denied Issues

Sections 307(b) and 505(b)(2) of the Clean Air Act let a petitioner seek judicial review of the portions of the EPA order that denied issues in the petition. Any petition for review must be filed in the appropriate U.S. Court of Appeals no later than January 20, 2026.

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Key Dates

Effective Date
Published Date
9/16/2025
11/18/2025

Department and Agencies

Department
Independent Agency
Agency
Environmental Protection Agency
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