Document OJJKwO6zk4MBddvvKrk9pZ2dw

Martin Marietta Magnesia Specialties Firadiey D. Kohn Vice President and Secretary March 26, 2025 Mr. William C. Herz Executive Director National Lime Association 200 North Glebe Road Suite 800 Arlington, Virginia 22203 Dear Mr. Herz, As Vice President and Secretary of Martin Marietta Magnesia Specialties, LLC, I hereby authorize the National Lime Association (N LA) 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 Hazardous Air Pollutants: Lime Manufacturing Plants Technoloi2,y 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 Martin Marietta Magnesia Specialties, LLC: those certain lime production facilities located at 755 Lime Road Woodville, Ohio 43469. The emissions standards subject to this exemption include hazardous air pollutant (I IA P) 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, Bradley D. Kohn 4123 Parklake Avenue, Raleigh, North Carolina 27612 (919) 788-4321 (314) 489-3446 brad.kohn@martinmarietta.com Sierra Club FOIA 2025-EPA-04883 ED_018388_00000249-00017 SC_EVERSPLIT0006033