Document 4aDz6EbmzLNaV8L7Y7BNk9avV

Message From: Sent: To: CC: Subject: AirAction [/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=FA78B98923384078995E04A73D258D83-AIRACTION] 4/1/2025 3:48:27 PM Vodopivec, Cynthia [Cynthia.Vodopivec@vistracorp.com] Mitchell, David [David.Mitchell@vistracorp.com]; Collins, Renee [Renee.Collins@luminant.com] RE: Presidential Exemption: MATS RTR: Martin Lake Station Thank you for emailing the AirAction mailbox to request a Presidential Exemption under section 1 12(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 I 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 5:23 PM To: AirAction <AirAction@epa.gov> Cc: Mitchell, David <David.Mitchell@vistracorp.com>; Collins, Renee <Renee.Collins@luminant.com> Subject: Presidential Exemption: MATS RTR: Martin Lake Station Caution: This email originated from outside EPA, please exercise additional caution when deciding whether to open attachments or click on provided links. I Please accept the attached letter on behalf of I.uminant Generation Company I.I.C ("I.uminant") requesting a Presidential exemption under Section 1 12(i)(4) of the Clean Air Act ("CAA") from compliance with the filterable particulate matter ("fPM") surrogate emission standard for non-mercury metal hazardous air pollutants ("HAP") and the requirement to install continuous emissions monitoring systems ("CENTS" or "PM CEMS") under the above-referenced rule (the "MATS RTR" or the "Rule") for the Martin Lake Steam Electric Station ("Martin Lake"). Luminant is requesting a two-year exemption, beginning July 6, 2027, from these requirements for Martin Lake Units 1, 2, and 3. Best Regards, Cynthia E. Vodopivec. P.F. SVP -- Environmental, f lealth & Safety Vistra Corp. m. 860-604-4844 Sierra Club FOIA 2025-EPA-04883 ED_018388_00005542-00001 SC_EVERSPLIT0020782