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Mississippi Department of Environmental Quality


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The information contained in this report is obtained from MDEQ's enSite (electronic environmental Site Information System) System used by the Office of Pollution Control's Air Division, Environmental Permits Division and Environmental Compliance and Enforcement Division, and the Office of Geology's Mining and Reclamation Division. The purpose of the system is to support permitting and compliance activities of the Department of Environmental Quality. Regulatory programs that are supported by this database are the Surface Water National Pollutant Discharge Elimination System (NPDES) Program; the Air Title V, Construction and Operating Programs; the Solid and Hazardous Waste Programs; Geology Surface Mining and Reclamation Division; and the Waste Tire Program (the UST program is currently not supported). There are other regulatory programs within the Department that do not currently utilize this database including programs managed by the Office of Land and Water, and the Total Maximum Daily Load (TMDL) Program.

Westlake Chemicals and Vinyls LLC

General Information

AI IDBranchSICCountyBasinStartEnd
2075Air 1
Haz Waste
Solid Waste
Stormwater 401
Water 1
2821, 2869, 4953MonroeTombigbee River06/22/1993 


Physical and Mailing Address

Physical Address (Primary)Mailing Address
715 Highway 25 South
Aberdeen, MS 39730
715 Highway 25 South
Aberdeen, MS 39730


Permits and Alternate/Historic AI Identifiers

Alt IDAlt NameAlt TypeStart DateEnd Date
184000014Georgia Gulf Chemicals and Vinyls LLC, AberdeenAir-Construction05/20/2009 
184000014Georgia Gulf Chemicals & Vinyls LLC, AberdeenAir-State Operating06/22/199302/01/1998
184000014Georgia Gulf Chemicals & Vinyls LLC, AberdeenAir-Title V Operating01/28/199812/02/1999
184000014Georgia Gulf Chemicals & Vinyls LLC, AberdeenAir-Title V Operating12/02/199901/01/2003
184000014Georgia Gulf Chemicals & Vinyls LLC- Aberdeen (Formerly CONDEA Vista Company)Air-Title V Operating01/07/200512/31/2009
184000014Georgia Gulf Chemicals and Vinyls LLC- AberdeenAir-Title V Operating03/26/201001/31/2013
184000014Axiall, LLCAir-Title V Operating01/31/201302/28/2015
184000014Axiall LLCAir-Title V Operating06/15/202105/31/2026
184000014Westlake Chemicals and Vinyls LLCAir-Title V Operating11/04/202205/31/2026
MSR001546Georgia Gulf Chemicals & Vinyls, LLC, AberdeenGP-Baseline02/26/200202/06/2006
MSR001546Georgia Gulf Chemicals & Vinyls, LLC, AberdeenGP-Baseline02/06/200603/23/2011
MSR001546Georgia Gulf Chemicals & Vinyls, LLC, AberdeenGP-Baseline03/23/201101/30/2013
MSR001546Axiall, LLCGP-Baseline01/30/201309/28/2015
MSR001546Axiall LLCGP-Baseline12/18/201510/31/2020
MSR001546Axiall, LLCGP-Baseline05/06/202111/30/2025
MSD007031230Georgia Gulf Chemicals and Vinyls LLC, AberdeenHazardous Waste-EPA ID02/10/200001/28/2013
MSD007031230Axiall LLCHazardous Waste-EPA ID01/28/2013 
MSD007031230Westlake Chemicals & Vinyls LLCHazardous Waste-EPA ID10/07/2022 
AUTHORIZEDVista Chemical CompanySolidWaste-Land Application - Other09/01/1993 
WQC2024063Westlake Chemicals and Vinyls LLCWQC Number08/26/2024 
MS0001970Georgia Gulf Chemicals & Vinyls LLC, AberdeenWater-NPDES07/25/199707/14/1999
MSP091451Georgia Gulf Chemicals & Vinyls LLC, AberdeenWater-Pretreatment07/14/199912/14/1999
MSP091451Georgia Gulf Chemicals & Vinyls LLC, AberdeenWater-Pretreatment12/14/199906/30/2004
MSP091451Georgia Gulf Chemicals & Vinyls LLC, AberdeenWater-Pretreatment12/06/200411/30/2009
MSP091451Georgia Gulf Chemicals and Vinyls LLC, AberdeenWater-Pretreatment12/14/200901/31/2013
MSP091451Axiall, LLCWater-Pretreatment01/31/201311/30/2014
MSP091451Axiall LLCWater-Pretreatment08/05/201507/31/2020
MSP091451Axiall LLCWater-Pretreatment03/15/202102/28/2026
MSP091451Westlake Chemicals & Vinyls LLCWater-Pretreatment11/21/202202/28/2026


Office of Pollution Control Contacts

NameAssignmentPhone Number
McNamara, JoeOffice of Pollution Control Air Compliance Manager(601) 961-5084
Savell, ZachOffice of Pollution Control Air Compliance Staff(601) 961-5192
Bland, JeffreyOffice of Pollution Control Air Permit Manager(601) 961-5112
Sandifer, AudraOffice of Pollution Control Air Permit Staff(601) 961-5673
Caron, KristaOffice of Pollution Control Hazardous Waste Manager(601) 961-5719
Justice, BradleyOffice of Pollution Control Hazardous Waste Staff(601) 961-5064
Mayeu, EthanOffice of Pollution Control Solid Waste Compliance Manager(601) 961-5613
Surrette, ZaneOffice of Pollution Control Solid Waste Compliance Staff(601) 961-5372
Beasley, SaraOffice of Pollution Control Stormwater Compliance Manager(601) 961-5283
Lancaster, MatthewOffice of Pollution Control Stormwater Compliance Staff(601) 961-5386
Barefoot, CarrieOffice of Pollution Control Stormwater Permit Manager(601) 961-5249
Barefoot, CarrieOffice of Pollution Control Stormwater Permit Staff(601) 961-5249
Beasley, DannyOffice of Pollution Control Water Compliance Manager(601) 961-5356
Brown, TravisOffice of Pollution Control Water Compliance Staff(601) 961-5322
Tomkins, TracyOffice of Pollution Control Water Permit Manager(601) 961-5622
Patel, SamarOffice of Pollution Control Water Permit Staff(601) 961-5331


Active Permits Available Online

Permit TypePermit NumberIssue DatePermit Document
Air - Construction Permit Modification1840-0001406/14/2021 click for document
Air - Title V Admin Mod1840-0001411/04/2022 click for document
Water - Pretreatment ADMINMSP09145111/21/2022 click for document


Active Coverages Available Online

Permit TypePermit NumberIssue DatePermit Document
General Permit - Baseline RecoverageMSR00154605/06/2021 click for document


Current Status of Individual Permit Applications

ProgramPermit TypePermit NumberStatus DateStatus Desc.
AirConstruction Permit Modification1840-0001406/14/2021Permit Issued
AirTitle V Admin Mod1840-0001409/13/2024Receive 502(b)10 Request
Solid WasteLand ApplicationAUTHORIZED10/02/1994Permit Issued
WaterNPDESMS000197012/14/1999Permit Issued
WaterPretreatment ADMINMSP09145111/28/2022Send Name Change / Transfer Approval Letter


Current Status of General Permit Applications

ProgramPermit TypePermit NumberStatus DateStatus Desc.PDF
General PermitBaseline RecoverageMSR00154605/06/2021Coverage Terminated click for document


Current Status of Water Quality Certification

ProgramTypeCert No.Status DateStatus Desc.
Water Quality401 CertificationWQC202406309/26/2024Draft Permit Public Comment Period Ends

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Disclaimer: The information found in enSearch Online is for informational purposes only. While the Department makes reasonable efforts to maintain the data accurately and in a timely manner, enSearch Online is not a legal substitute for the official administrative files of the Department and will from time to time contain information that is not as complete as the information contained in the full administrative file of the agency. Additionally, typographical errors may occur in the transcription of written or typed information into the enSearch Online database; therefore, care should be taken to confirm the information in the database with information in the agency's administrative files. If any conflict exists between information contained in the enSearch Online database and the official administrative files of the Department, the official administrative files of the Department should be considered the official record. Nor is the posting of information on enSearch Online intended to replace the traditional methods of publishing public notice of certain documents as required by State and Federal statutes and/or regulations. EnSearch Online is intended to enhance the public's access to basic agency information. If you wish to review the official public records of the Department, you should contact the Public Records Officer of the Department at : Public Records Officer, Mississippi Department of Environmental Quality, PO Box 2261, Jackson, MS 39225-2261, Phone Number (601) 961-5611 or (601) 961-5171, Fax Number (601) 354-6356.