Document 4aeYMxK6J8Bg4gwo4pVQd6epV

March 26, 2025 Mr. William C. lieu Executive Director National Lime Association 200 North Glebe Road Suite 800 Arlington, Virginia 22203 Dear Bill, As Vice-President, Corporate Affairs, Environment and Sustainability of the Graymont Lime Company, 1 hereby authorize the National Lime Association (NLA) to submit a request on our behalf for a two-year presidential exemption of our major source lime plants pursuant to Clean Air Act 112(i)(4) from the requirements of the final rule titled: - National Emission Standards for I Ia7arclous Air Pollutants: Lime Manufacturing Plants Technology Review" (89 FR 57738; July 16, 2024) (Lime Rule). Such exemption, if granted, would extend the compliance date from July 16, 2027 to July 16. 2029, while EPA reconsiders the Lime Rule. The facilities in this request include the following major source lime plants owned and controlled by Graymont Lime Company: Cricket Mountain, UT Port Inland, MI Green Bay, WI Eden, WI Superior, WI Pleasant Gap, PA The emissions standards subject to this exemption include hazardous air pollutant (I IAP) standards for hydrogen chloride, mercury, organics, and dioxins & furans. NLA will provide the agency with additional information on why the technology to implement the standard is not available and why it is in the national security interests of the United States to grant the exemption. Sincerely, Graymont Lime Company Sierra Club FOIA 2025-EPA-04883 ED_018388_00000249-00014 SC_EVERSPLIT0012704