Request for Extension of Compliance SECTION I GENERAL INFORMATION A.

Message From: Hejmadi, Prashanth [phejmadi@westlake.com] Sent: 3/31/2025 7:24:13 PM To: AirAction [AirAction@epa.gov] CC: Szabo, Aaron [Szabo.Aaron@epa.gov]; Tardif, Abigale (Abbie) [Tardif.Abigale@epa.gov ]; Donahue, Sean [donahue.sean@epa.gov ]; Dominguez, Alexander [dominguez.alexander@epa.gov ]; Tsirigotis, Peter [Tsirigotis.Peter@epa.gov ]; Lassiter, Penny [Lassiter.Penny@epa.gov ]; Lessard, Patrick [Lessard.Patrick@epa.gov ]; Bouchard, Andrew [Bouchard.Andrew@epa.gov ]; Newman, Susan [snewman@westlake.com] Subject: HON Section 112(i)(4) waiver request Attachments:Westlake Deer Park Texas Facility CAA Section 112(i)(4) 2 year Waiver Request.pdf 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: AirAction [/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=FA78B98923384078995E04A73D258D83-AIRACTION] 4/1/2025 4:19:03 PM Vodopivec, Cynthia [Cynthia.Vodopivec@vistracorp.com] Mitchell, David [David.Mitchell@vistracorp.com]; Collins, Renee [Renee.Collins@luminant.com] RE: Presidential Exemption: MATS RTR: Coleto Creek Power 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.

Message From: Sent: To: Subject: AirAction [/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBO HF23SPDLT)/CN =RECIPIENTS/CN -FA78B98923384078995E04A73D258D83-AlRACTION] 4/1/2025 9:01:38 PM Wierenga, Paul [Paul.Wierenga@us.dlapiper.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).

Message From: Sent: To: CC: Subject: AirAction [/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=FA78B98923384078995E04A73D258D83-AIRACTION] 4/2/2025 12:14:52 PM 'Bomba, Eric' [Eric.Bomba@CookMedical.com] Gardner, Will [wgardner@taftlaw.com]; 'Dosdall, Andy' [ADosdall@Taftlaw.com ]; 'Whetham, Dan' [Dan.Whetham@CookGroup.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).

Message From: Sent: To: Subject: AirAction [/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBO HF23SPDLT)/CN=RECIPIENTS/CN -FA78B98923384078995E04A73D258D83-AlRACTION] 4/2/2025 12:14:05 PM Linda Mirsky Brenneman [linda.brenneman@basf.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).

Message From: Sent: To: CC: Subject: AirAction [/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=FA78B98923384078995E04A73D258D83-AIRACTION] 4/1/2025 4:11:43 PM Tamukong, Walter [Walter.Tamukong@clevelandcliffs.com ] Forrester, Traci L [Traci.Forrester@clevelandcliffs.com ] RE: Presidential Exemption: National Emission Standards for Hazardous Air Pollutants for Coke Ovens: Pushing, Quenching, and Battery Stacks, and Coke Oven Batteries; Residual Risk and Technology Review, & Periodic Technology Review (89 FR 55684; July 5, 2 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.

RLR Consulting, LLC 5401 Aztec Dr Raleigh, North Carolina 27612 Phone (919) 696-7008 Fax (919) 788-0878 MEMORANDUM TO: Rae Cronmiller, NRECA FROM: Ralph L.

EPA's technology review does not support requiring fenceline monitoring at HNR facilities under Section 1 12(D)(6); the Agency lacks authority to require fenceline monitoring at the IINR facilities because there is no evidence that these requirement are "necessary," and EPA's proposed approach has several flaws with the proposed action level, the corrective action process, and the timeline and approach for monitoring (see Section XI).

USCA Case #24-1190 Document #2062093 Filed: 06/27/2024 Page 69 of 92 Personal income is the income received by households.

March 28. 2025 Page 5 I.

Sierra Club FOIA 2025-EPA-04883 \ Final Rule Strengthens MATS Particulate Matter (PM) standard used as a surrogate for non-mercury HAP metals, and compliance demonstration requirement: Tighter filterable particulate matter (fPM) standard of 0.010 Ib/MMBtu Strengthens by 67 percent compared to 2012 MATS standard of 0.030 lb/MMBtu Require all sources to use PM Continuous Emissions Monitoring Systems (PM CEMS) to demonstrate compliance 0.010 lb/MMBtu is the lowest possible fPM limit where PM CEMS can provide valid and enforceable data Mercury (Hg) standard for lignite-fired EGUs Tighter Hg emission standard of 1.2 113/TBtu Strengthens by 70 percent compared to 2012 MATS standard of 4.0 lb/Tbtu 1.2 lb/TBtu is the standard that must be met by all non-lignite-fired EGUs Remove startup definition #2 L0000-SZ00000- 8881.0- oe SC_EVERSPLIT0006303

Units that may need to update controls to meet MATS Sierra Club FOIA 2025-EPA-04883 This table summarizes the locations of EGUs expected to need to upgrade existing controls to meet the final revised standards.

Minnkota Power Cooperative, Inc.

Minnkota Power Cooperative, Inc Milton R Young Station Unt 1 and 2 A14559 013 Rev 2 May 22, 2024 Table 2-2 -- MRY Unit 1 Existing System Capabilities using Brominated PAC Parameter Unit Load during testing PAC Injection Rate Avg.