Message From: Estevens, Ryan [restevens@westlake.com] Sent: 3/31/2025 6:42:36 PM To: AirAction [AirAction@epa.gov] CC: Bouchard, Andrew [Bouchard.Andrew@epa.gov ]; Lessard, Patrick [Lessard.Patrick@epa.gov ]; Lassiter, Penny [Lassiter.Penny@epa.gov ]; Tsirigotis, Peter [Tsirigotis.Peter@epa.gov ]; Dominguez, Alexander [dominguez.alexander@epa.gov ]; Donahue, Sean [donahue.sean@epa.gov]; Tardif, Abigale (Abbie) [Tardif.Abigale@epa.gov ] Subject: Request a Presidential Exemption under section 112(1)(4) of the Clean Air Act for Westlake Vinyls Company, LP Attachments:Westlake Geismar CAA 112i4 Request_03-31-2025.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: Christina Xydis [cxydis@vinylinfo.org] Sent: 3/31/2025 7:41:50 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 ] Subject: Presidential Exemption for the HON Attachments:Vinyl Institute Letter Supporting its Members Request for Presidential Exemption.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: Subject: Mark Keltori Ex. 6 Personal Privacy (PP) 3/28/2025 2:42:41 PM AirAction [AirAction@epa.gov] Request for EPA Air Exception 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: Subject: Flag: AirAction [/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBO HF23SPDLT)/CN =RECIPIENTS/CN =FA78 B98923384078995E04A73D258D83-AlRACTION] 3/31/2025 6:50:28 PM Estevens, Ryan [resteyens@westlake.com] RE: Request a Presidential Exemption under section 112(1)(4) of the Clean Air Act for Westlake Vinyls Company, LP Follow up 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: CC: Subject: AirAction [/O=EXCHANGELABS/OU=EXCHANGE ADMINISTRATIVE GROUP (FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=FA78B98923384078995E04A73D258D83-AIRACTION] 4/2/2025 12:17:20 PM Douglas, Sarah [sarah.douglas@bakerbotts.com] Watkins Mallick, Allison [allison.mallick@bakerbotts.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 (FYDIBOHF23SPDLT)/CN=RECIPIENTS/CN=FA78B98923384078995E04A73D258D83-AIRACTION] 3/31/2025 7:29:09 PM Stewart, John [jstewart@abccoke.com] RE: ABC Coke Request for Presidential Exception 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.

From: Christina Xydis [cxydis@vinylinfo.org] ent: 3/31/2025 7:41:50 PM o: 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.

anthierPwestlake.com I (337) 302-8050 liesttake 3525 Cities Service Hwy, Sulphur, Louisiana 70663 I www.westlake.com 741- 4110r.

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