Document XOBmxjnj8KMnw8wjkQk2QvEzg

United States Steel March 31, 2025 Hon. Lee M. Zeldin Administrator U.S. Environmental Protection Agency 1200 Pennsylvania Ave., NW Washington, DC 20460 VIA E-MAIL airaction(kepa.gov Dear Administrator Zeldin: Re: Requestfor Clean Air Act Section 112(i)(4) Presidential Exemption front National Emission Standardsfor Hazardous Air Pollutants: Taconite Iron Ore Processing, 89 Fed. Reg. 16,408 (March 6, 2024) ("Taconite RTR Rule") United States Steel Corporation -- Minnesota Ore Operations Keetac Plant, Keewatin, Minnesota; Minntac Plant, Mountain Iron, Minnesota United States Steel Corporation (U. S. Steel) respectfully requests a Presidential Exemption for the compliance with the 2024 amendments to the National Emission Standards for I Ia7ardous Air Pollutants for Taconite Iron Ore Processing, 89 Fed. Rot!. 16,408 (March 6, 2024) (the "Taconite RJR Rule") for the following U. S. Steel taconite iron ore processing facilities: s United States Steel Corporation -- Keetac Plant 1 Mine Road Keewatin, Minnesota 55753-3330 s United States Steel Corporation -- Minntac Plant 8771 Park Ridge Drive Mountain Iron, Minnesota 55768 As specifically noted herein, technology to implement the requirements to comply with the Taconite RJR Rule are not available and it is in the national security interests of the United States that a two-year exemption be granted. On March 12, 2025, EPA announced that it was taking appropriate action to advance President Trump's initiative of "Powering the Great American Comeback." As part of that effort, EPA indicated that it was reconsidering the Taconite RTR Rule as well as several other rules; and advised that "any source interested in a Presidential Exemption, should provide their recommendations to EPA by March 31, 2025;" and that sources need only provide why technology is unavailable and why it is the national security interests of the United States to provide the exemption. In response to that announcement, and consistent with our previously submitted petition for judicial review, and petition for administrative stay and reconsideration, U. S. Steel is submitting its request for a Presidential Exemption pursuant to Clean Air Act Section Sierra Club FOIA 2025-EPA-04883 ED_018388_00000151-00001 SC_EVERSPLIT0005881