Document gYkEJvZ92JDxj1dZvz3OjmbN

Message From: McQuown, Brian [mcquowbc@oge.com] Sent: 3/31/2025 7:52:18 PM To: AirAction [AirAction@epa.gov] Subject: Presidential Exemption: Mercury and Air Toxics Standard: Oklahoma Gas and Electric Facilities - Sooner 1, Sooner 2, Muskogee 6, River Valley CS 1 Attachments:OG&E MATS Presidential Exemption Request.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 Attached is a letter requesting a Presidential Exemption from compliance with the MATS Rule as provided for in Clean Air Act Section 112(i)(4). As described in the letter, we believe that required technology will not be available for four Oklahoma Gas and Electric Co. electric generating units ("EGU") and that an exemption is in the national security interests of the United States. 131'1a11 C. McQuown hivironmental IZegulaft.wv Manager rederd] and Regional Affairs P(.) Ho\ 321 Oklahoma Cit.\ , Oklahoma 73101 Oft ice -105-551;-3439 \lobi le 702-29b-a) l l nIcti NOTICE: This electronic message and any attachments contain information which may be confidential, sensitive or privileged. It is intended only for the recipient(s) to which it is addressed. If you arc not the intended recipient, be aware that any review, disclosure, retransmission, conversion to hard copy, copying, circulation or other use of all or any portion of this message and any attachments is strictly prohibited. Any misuse or unauthorized disclosure can result in both civil and criminal penalties. If you have received this communication in error, please notify the sender immediately by return email and delete all copies of this message including any attachments from your system. Sierra Club FOIA 2025-EPA-04883 ED_018388_00000091-00001 SC_EVERSPLIT0020601