Document o9j7wo3e776xvYobkxmmBO9Nw

Message From: Garner, Hillary [hgarner@westlake.com] Sent: 3/31/2025 7:25:05 PM To: AirAction [AirAction@epa.gov] CC: Tardif, Abigale (Abbie) [Tardif.Abigale@epa.gov]; Szabo, Aaron [Szabo.Aaron@epa.gov]; Donahue, Sean [donahue.sean@epa.gov ]; Dominguez, Alexander [dominguez.alexander@epa.gov ]; Tsingotis, Peter [Tsirigotis.Peter@epa.gov ]; Lassiter, Penny [Lassiter.Penny@epa.gov ]; Lessard, Patrick [Lessard.Patrick@epa.goy]; Bouchard, Andrew [Bouchard.Andrew@epa.goy] Subject: Presidential Exemption [HON Section 112(i)(4)] for Westlake Chemicals & Vinyls LLC -- Plaquemine Facility from HON rule Attachments:Presidential Exemption for Westlake Chemicals & Vinyls LLC -- Plaquemine Facility.pdf Caution: This email originated from outside EPA, please exercise additional caution when deciding `vhether to open attachments or click on provided links. Flag: Follow up To whom it may concern -- Please see attached, a request for Presidential Exemption for Westlake Chemicals & Vinyls LLC -- Plaquemine Facility's HON-covered facility at 26100 Highway 405 S, Plaquemine LA 70764, as requested by U.S. EPA of the regulated community. As explained in greater detail in the attached letter, Westlake is seeking a Presidential Exemption under the New Source Performance Standards for the Synthetic Organic Chemical Manufacturing Industry and National Emission Standards for Hazardous Air Pollutants for the Synthetic Organic Chemical Manufacturing Industry and Group I & II Polymers and Resins. See 89 FR 42932; May 16, 2024 (HON rule). As Westlake's evaluation of the requirements under the HON rule progresses and we continue to develop our compliance plans, Westlake may have additional detail or more concrete information related to the technical challenges, time required and costs for coming into compliance with the HON rule. Some of that more detailed information may include confidential business information which Westlake would be willing to provide under the appropriate protections for such competitive and trade secret information. Please contact Hillary Garner at hgarner @westlake.c.orn should EPA or the President require more detailed information about specific impacts to Westlake's Plaquemine Facility. Thank you for the timely consideration of this request. Hillary Garner I Sr. Manager, Regional HSE nflarneri'mestlake.corn Office: 225-685-2632 l Cell: 225-776-9958 Vestlake Sierra Club FOIA 2025-EPA-04883 ED_018388_00000081-00001 SC_EVERSPLIT0020581 26100 Highway 405 S, Plaquemine, Louisiana 70764 l www westlake corn Sierra Club FOIA 2025-EPA-04883 ED_018388_00000081-00002 SC_EVERSPLIT0020582