Hon.

PETE MAILING ADDRESS: PHYSICAL ADDRESS: IEN P.O.

SCRUBGRASS RECLAMATION COMPANY LP 2151 Lisbon Rd Kennerdell PA 16374 Phone: 814-385-6661 Fax # 814-385-6704 Mr.

PantherCreek Power Mr.

USCA Case #24-1190 Document #2062093 Filed: 06/27/2024 Page 14 of 92 behalf of the Owners" and must construct, operate, and maintain Colstrip in accordance with Prudent Utility Practice.' 28.

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USCA Case #24-1190 Document #2062093 Filed: 06/27/2024 Page 25 of 123 January 2024 Cold Weather Event - Montana Resource me p ate capacity ft,IWI NWE Mc dana RortIolio Resoune Productiuq Ave , ege Hourly.

Minnkota Power Cooperative, Inc Milton R Young Station Unit 2 A14559 010 Rev No Final June 23. 2023 which is consistent with historic ESP designs where transformer-rectifier (TIR) sets were typically selected to provide lower current density at the inlet sections, where the dust concentration will tend to suppress the corona current, and to provide higher current density at the outlet sections, where there is a greater percentage of fine particles.

Message From: Sent: To: Subject: AirAction [/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBO HF23SPDLT)/CN=RECIPIENTS/CN -FA78B98923384078995E04A73D258D83-AlRACTION] 3/31/2025 2:34:02 PM Culligan, Kevin [Culligan.Kevin@epa.gov] FW: Presidential Exemption: Clean Air Act NSR and NNSR Requirements: Thunderhead Dekalb Co, IL Data Center Power Project From: Brennan Zaunbrecher <brennan@thunderheaddg.com> Sent: Friday, March 28, 2025 3:29 PM To: AirAction <AirAction@epa.gov> Subject: Presidential Exemption: Clean Air Act NSR and NNSR Requirements: Thunderhead Dekalb Co, IL 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.

Message From: Sent: To: CC: Subject: Dunkins, Robin [Dunkins.Robin@epa.gov] 3/24/2025 10:43:37 PM Fillio, Kristen [Fillio.Kristen@epa.gov]; Noonan, Jenny [Noonan.Jenny@epa.gov] Do, Bebhinn [do.bebhinn@epa.gov] Re: Presidential Exemption under CAA Section 112(i)(4) I will contact her tomorrow.

Message From: Tull, Whitney [Whitney_Tull@steris.com] Sent: 3/25/2025 3:13:14 PM To: Dunkins, Robin [Dunkins.Robin@epa.gov] Subject:Re: Presidential Exemption under CAA Section 112(i)(4) Caution: This email originated from outside EPA, please exercise additional caution when deciding whether to open attachments or click on provided links.

2024-EPA-05254 Sierra Club FOIA 2024-EPA-05254 ED_017426_00000894-00001 SC_EVERSPLIT0000676

Message From: Sent: To: Subject: Whitfield, Peter [pwhitfield@sidley.com] 4/13/2020 7:27:07 PM Willis, Sharnett [Willis.Sharnett@epa.gov] RE: Discuss on RFS That works for me, thanks!

Appointment From: Sent: To: CC: Bill Koetzle [KoetzleB@api.org] 3/24/2020 6:15:05 PM Bill Koetzle [KoetzleB@api.org]; Eisenberg,Ross [Ross_Eisenberg@americanchemistry.com]; Rachel Jones [rjones@nam.org]; Derrick Morgan [DMorgan@afpm.org]; Gunasekara,Mandy [gunasekara.Mandy@epa.gov]; Smythe Anderson [AndersonS@api.org] Willis,Sharnett [Willis.Sharnett@epa.gov] Subject: Location: Call with Trades Call Start: 3/25/2020 8:00:00 PM End: 3/25/2020 9:00:00 PM Show Time As: Tentative Recurrence: (none) Join Skype Meeting Trouble Joining?

From: Western Caucus Foundation rsvp@westerncaucusfoundation.org To: "dwbernhardt@ios.doi.gov" dwbernhardt@ios.doi.gov Subject: [EXTERNAL] Invite: WCF Winter Roundtable and Field Tour at the National Finals Rodeo!