Document 9LO4Ey9m3YYD6myXp3gvo2JRR

Message From: Sent: To: CC: Subject: AirAction [/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=FA78B98923384078995E04A73D258D83-AIRACTION] 4/1/2025 3:38:14 PM Vodopivec, Cynthia [Cynthia.Vodopivec@vistracorp.com] Mitchell, David [David.Mitchell@vistracorp.com]; Collins, Renee [Renee.Collins@luminant.com] RE: Presidential Exemption: MATS RTR: Oak Grove Steam Electric Station Thank you for emailing the AirAction mailbox to request a Presidential Exemption under section 112(i)(4) of the Clean Air Act and for engaging with EPA in advancing President Trump's Executive Orders and Powering the Great American Comeback. We have received your email and will be in contact soon. If you have Confidential Business Information (CBI) that you'd like to submit, please submit it in electronic version to the C,BI@epa.go inbox or in hardcopy to: USEPA, OAQPS CORE CBI Office 4930 Old Page Road Durham, NC 27703 From: Vodopivec, Cynthia <Cynthia.Vodopivec@vistracorp.com> Sent: Monday, March 31, 2025 5:20 PM To: AirAction <AirAction@epa.gov> Cc: Mitchell, David <David.Mitchell@vistracorp.com>; Collins, Renee <Renee.Collins@luminant.com> Subject: Presidential Exemption: MATS RTR: Oak Grove Steam Electric Station Caution: This email originated from outside EPA, please exercise additional caution when deciding whether to open attachments or click on provided links. Please accept this letter on behalf of Oak Grove Management Company LLC requesting a Presidential exemption under Section 112(i)(4) of the Clean Air Act ("CAA") from compliance with (1) the mercury standard, and (2) the filterable particulate matter ("fPM") surrogate emission standard for non-mercury metal hazardous air pollutants ("HAP"), and (2) the requirement to install continuous emissions monitoring systems ("CEMS" or "PM CEMS") under the abovereferenced rule (the "MATS RTR" or the "Rule") for the Oak Grove Steam Electric Station ("Oak Grove"). Oak Grove is requesting a two-year exemption, beginning July 6, 2027, from these requirements for Oak Grove Units 1 and 2. Best Regards, Cynthia E. Vodopivec, P.E. SVP -- Environmental, Health & Safety Vistra Corp. Cynth' vodopivecyT,vistracorp.com m. 860-604-4844 BEST DEFENSE Sierra Club FOIA 2025-EPA-04883 ED_018388_00005536-00001 SC_EVERSPLIT0005413