Document EkqBOn4YypqakXpEj5obrG7L

March 28, 2025 Ionorable Lee Zeldin Office of the Administrator (1101A) United States Environmental Protection Agency 1200 Pennsylvania Avenue, N.W. Washington, D.C. 20460 airaction(ctepa.gov Re: Request for Presidential Exemption Pursuant to CAA Section 112(i)(4) for EPA's Final Rule Amending the National Emission Standards for Hazardous Air Pollutants Fur Coal- and Oil-Fired Electric Utility Steam Generating Units. Dear Administrator Zeldin: Pursuant to the Clean Air Act ("CAA") Section 1 12(i)(4), 42 U.S.C. 7412(i)(4), Basin Electric Power Cooperative ("Basin Electric") respectfully requests two-year Presidential Exemptions from compliance with the standards under the Environmental Protection Agency's ("EPA") final rule amending the National Emission Standards for Hazardous Air Pollutants ("NESIIAP") for coal- and oil-fired electric utility steam generating units-the Mercury and Air Tonics Standards ("MATS"), 89 Fed. Reg. 38,508 (May 7, 2024) ("2024 MATS Rule"). Basin Electric is a not-for-profit power generation and transmission cooperative_ operating in nine states and serving 3 million consumers. EPA published the 2024 MATS Rule on May 7. 2024. The 2024 MATS Rule imposed the following strict amendments to the MATS: 1. Lowering the filterable particulate matter ("IPM") emission limit from 0.030 lb/MMBtu to 0.010 lb/MMBtu for existing coal-fired electric generating units ("F.(iUs"); Requiring coal- and oil-fired EGUs to demonstrate compliance with the fPM standard using particulate matter continuous emissions monitoring ("PM CEMS"); and 3. Lowering the mercury emission standard from 4.0 1h/TBtu to 1.2 lb:TBtu for existing lignite-fired FLGUs.' The 2024 MATS Rule established July 8, 2027 as the deadline to demonstrate compliance with these requirements. As both industry groups and EPA have recognized, these regulatory amendments impose burdensome requirements on power plants across the country including the coal-fired EGUs that Basin Electric operates as well as the nation's energy grid systems. National Etnis.siun slumlords tot. Ha _ardtms. Air pollutants . caul_ and o ll_ mred Lieu/p.n. util ih steam Generating Ruvicit of the Residual Ri and Technology Revieu. 80 Fed. Reg. 38,508, 38,510 tMay 7. 2024). Sierra Club FOIA 2025-EPA-04883 ED_018388_00000312-00001 SC_EVERSPLIT0006286