EPA Adjusts U.S. Steel Plant Permit Following Objection Petitions
Published Date: 11/20/2025
Notice
Summary
The EPA reviewed complaints about the air pollution permit for U.S. Steel’s Irvin Plant in Pennsylvania and decided to agree with some concerns but not all. This means the plant must make some changes to how it controls pollution, but it can keep operating. Anyone unhappy with the decision has until January 20, 2026, to ask a court to review it.
Analyzed Economic Effects
3 provisions identified: 1 benefits, 2 costs, 0 mixed.
Local air controls tightened
The EPA issued an order dated September 16, 2025 that granted in part petitions about operating permit no. 0050-OP24 for the U.S. Steel Mon Valley Works Irvin Plant in West Mifflin, Allegheny County, Pennsylvania. As a result, the plant must make some changes to how it controls pollution while it continues to operate.
Plant must change controls but stays open
The EPA order (signed September 16, 2025) granted some objections to the Title V permit and denied others for U.S. Steel’s Irvin Plant (permit no. 0050-OP24). The plant is required to implement certain changes to pollution controls but may continue operating under the permit.
Deadline to seek court review
Sections 307(b) and 505(b)(2) of the Clean Air Act allow petitioners to seek judicial review of the portions of the EPA order that denied petition issues. 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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