Document KG6YrwX8KEbXn4e7xE5w1dJGw

Message From: Sent: To: Subject: AirAction [/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=FA78B98923384078995E04A73D258D83-AIRACTION] 4/2/2025 11:55:26 AM Brennan Zaunbrecher [brennan@thunderheaddg.com] CORRECTION: Updated email address for CBI related to the Presidential Exemption In the previous email, an incorrect email address was provided for the submission of electronic Confidential Business Information (CBI). The email address should be: \( Thank you. From: AirAction Sent: Monday, March 31, 2025 7:24 AM To: Brennan Zaunbrecher <brennan@thunderheaddg.com> Subject: RE: Presidential Exemption: Clean Air Act NSR and NNSR Requirements: Thunderhead Bexar County, TX Data Center Power Project Thank you for emailinv. 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 inbox or in hardcopy to: USEPA. OAQPS CORE CBI Office 4930 Old Page Road Durham, NC 27703 From: Brennan Zaunbrecher thiflid L-.1C1C12.. Sent: Friday, March 28, 2025 3:25 PM To: AirAction Subject: Presidential Exemption: Clean Air Act NSR and NNSR Requirements: Thunderhead Bexar County, TX Data Center Power Project Caution: This email originated from outside EPA, please exercise additional caution when deciding whether to open attachments or click on provided links. I Presidential Exemption: Clean Air Act NSR and NNSR Requirements: Thunderhead Bexar County, TX Data Center Power Project To Whom It May Concern: Thunderhead Energy Solutions LLC requests a two-year Presidential exemption from certain Clean Air Act requirements for our 500MW behind-the-meter natural gas power facility supporting critical data center infrastructure in Bexar County, Texas. Emissions standards subject to exemption request: New Source Review (NSR) permitting requirements, Non-attainment New Source Review (NNSR) requirements, Title V Operating Permit timeline Sierra Club FOIA 2025-EPA-04883 ED_018388_00005610- 00001 SC_EVERSPLIT0005571