Document LJzOBkYDj9aopOm0YxYk4QE3z

Coleto Creek Power, LLC Coleto Creek Power, LLC. Coleto Creek Power Station 6555 Sierra Drive Irving, TX 75039 March 31, 2025 Submitted via entail to airaction@epa.gov President Donald J. 'Frump cio Administrator Lee M. Zeldin Office of the Administrator (1101A) U.S. Environmental Protection Agency 1200 Pennsylvania Avenue, I.W. Washington, U.C. 20460 Re: Presidential Exemption: National Emission Standardsfor Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units Review of the Residual Risk and Technolo;y Review, 89 Fed. Reg. 38,508 (May 7, 2024): Coleto Creek Power Station Unit 1. Dear President Trump: Please accept this letter on behalf of Coleto Creek Power, I,I,C requesting a Presidential exemption under Section 112(i)(4) of the Clean Air Act ("CAA") from compliance with the filterable particulate matter ("IPM") surrogate emission standard for non-mercury metal hazardous air pollutants ("IIAP") and the requirement to install continuous emissions monitoring systems ("CEMS" or "PM CEMS") under the above-referenced rule (the "MATS RTR" or the "Rule") for the Coleto Creek Power Station ("Coleto Creek"). Coleto Creek Power, LLC is requesting a 2year exemption, beginning July 6, 2027, from these requirements for Coleto Creek Unit 1. The MATS RTR amended 40 C.F.R. Part 63 Subpart UUUUU and became effective on July 8, 2024. Under the Rule, Coleto Creek's electric generating unit ("ECM") is required to reduce f-PM emissions from 0.030 lb/MMBtu to 0.010 lb/MMI3tu. Compliance with this revised limit is based on a continuous, 30-day rolling limit. In addition, the Rule requires all coal-fired F.CIUs to install CEMS to implement the revised fPM standard, rather than allowing F.GUs to continue to use stack testing to demonstrate compliance. The compliance deadline for meeting the revised f-PM standard and for installing and using PM CEMS is July 6, 2027, but work to design, finance, and install the necessary controls and the new CEMS would need to begin much sooner. Under Section 1 12(i)(4) of the Clean Air Act, the President may issue exemptions "from compliance with any standard or limitation under this section for a period of not more than 2 ,'ears if the President determines that the technology to implement such standard is not available and that it is in the national security interests of the United States to do so." 42 U.S.C.. 7412(i)(4). Sierra Club FOIA 2025-EPA-04883 ED_018388_00000172-00001 SC_EVERSPLIT0005947