Document kmzyzENvod5bqkze7xZ5JRVvE

Message From: Georgia Stenger [gstenger@kcpo.com ] Sent: 3/31/2025 7:47:17 PM To: AirAction [AirAction@epa.gov] Subject: Presidential Exemption: National Emission Standards for Hazardous Air Pollutants: Coal- and Oil-Fired Electric Utility Steam Generating Units: Keystone Generating Station (ORISPL 3136) Attachments:2025-03-31 KEY- CON_Section 112 Presidential Exemption MATS Rule Extension Request-Keystone.pdf Caution: This email originated from outside EPA, please exercise additional caution when deciding whether to open attachments or click on provided links. Flag: Follow up Keystone Generating Station (ORISPL 3136) hereby submits its request for a two-year Presidential Exemption from the pending 40CFR Part 63, MATS limit of 0.01 lb/MMI3tu Particulate Matter (PM) as well as the requirement to install, certify and operate a PM continuous emissions monitoring system (CEMS) by July 8, 2027. Please see the attached letter outlining its request and justification. Thank you, Gcorgianna R. Stenger Keystone-Conemaugh Projects, 175 Cornell Rd., Suite 1 Blairsville, PA 15717 (724) 357-1713 Sierra Club FOIA 2025-EPA-04883 ED_018388_00000072-00001 SC_EVERSPLIT0020577