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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 Compounds LLC dba Westlake Global Compounds, Madison

General Information

AI IDBranchSICCountyBasinStartEnd
16314Haz Waste
Stormwater 401
3087MadisonBig Black River, Pearl River02/06/2001 


Physical and Mailing Address

Physical Address (Primary)Mailing Address
210 Industrial Drive North
Madison, MS 39110
210 Industrial Drive North
Madison, MS 39110


Permits and Alternate/Historic AI Identifiers

Alt IDAlt NameAlt TypeStart DateEnd Date
MSR001506Georgia Gulf Chemicals and Vinyls LLCGP-Baseline09/27/200101/23/2006
MSR001506Georgia Gulf Chemicals and Vinyls LLCGP-Baseline01/23/200612/06/2010
MSR001506Georgia Gulf Chemicals and Vinyls, L.L.C.GP-Baseline12/06/201002/05/2013
MSR001506Axiall, LLCGP-Baseline02/05/201305/11/2017
MSR001506Axiall, LLCGP-Baseline05/11/201710/31/2020
MSR001506Westlake Compounds LLCGP-Baseline08/27/202107/17/2024
MSR001506Westlake Compounds LLC dba Westlake Global Compounds, MadisonGP-Baseline07/17/202411/30/2025
MSR000100305Georgia Gulf CorporationHazardous Waste-EPA ID02/06/200102/20/2013
MSR000100305Axiall LLCHazardous Waste-EPA ID02/20/201311/13/2018
MSR000100305Westlake Compounds LLCHazardous Waste-EPA ID11/13/2018 
MSP091981Georgia Gulf Chemicals and Vinyls LLCWater-Pretreatment05/08/200304/30/2008


Office of Pollution Control Contacts

NameAssignmentPhone Number
Caron, KristaOffice of Pollution Control Hazardous Waste Manager(601) 961-5719
Justice, BradleyOffice of Pollution Control Hazardous Waste Staff(601) 961-5064
Beasley, SaraOffice of Pollution Control Stormwater Compliance Manager(601) 961-5283
Beasley, SaraOffice of Pollution Control Stormwater Compliance Staff(601) 961-5283
Simonson, BeckyOffice of Pollution Control Stormwater Permit Staff(601) 961-5580


Active Coverages Available Online

Permit TypePermit NumberIssue DatePermit Document
General Permit - Baseline Administrative ModificationMSR00150607/17/2024 click for document


Current Status of Individual Permit Applications

ProgramPermit TypePermit NumberStatus DateStatus Desc.
WaterNPDESNone Assigned09/30/2002Application Withdrawn
WaterPretreatment ModificationMSP09198101/21/2004Permit Issued


Current Status of General Permit Applications

ProgramPermit TypePermit NumberStatus DateStatus Desc.PDF
General PermitBaseline Administrative ModificationMSR00150607/17/2024Send Name Change / Transfer Approval Letter

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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.