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.

MMC Materials Inc, North Natchez Plant

General Information

AI ID	Branch	SIC	County	Basin	Start	End
124	Air 2 Water 2	3273	Adams	South Independent Streams	03/07/1986

Physical and Mailing Address

Physical Address (Primary)	Mailing Address
1 Laboure Drive Washington, MS 39120	PO Box 2569 Madison, MS 39130

Permits and Alternate/Historic AI Identifiers

Alt ID	Alt Name	Alt Type	Start Date	End Date
004000034	Saint Catherine Gravel Company, Washington Plant	Air-State Operating	07/09/1991	07/08/1996
MSR000364	Saint Catherine Gravel Company, Washington Plant	GP-Baseline	11/10/1992	02/20/2001
MSR000364	Saint Catherine Gravel Company, Washington Plant	GP-Baseline	02/20/2001	03/20/2001
MSR320034	Saint Catherine Gravel Company, Washington Plant	GP-Mining	11/10/1992	03/20/2008
MSR320034	Saint Catherine Gravel Company, Washington Plant	GP-Mining	03/20/2008	02/20/2013
MSG110193	Saint Catherine Gravel Company, Washington Plant	GP-Ready Mix Concrete	03/20/2001	04/30/2003
MSG110193	St. Catherine Gravel Company, Washington Plant	GP-Ready Mix Concrete	05/10/2004	04/01/2009
MSG110193	Saint Catherine Gravel Company, Washington Plant	GP-Ready Mix Concrete	06/10/2009	03/31/2014
MSG110193	Saint Catherine Gravel Company, Washington Plant	GP-Ready Mix Concrete	05/07/2014	03/31/2019
MSG110193	Saint Catherine Gravel Company, Washington Plant	GP-Ready Mix Concrete	02/23/2021	03/24/2025
MSG110193	MMC Materials, Inc., North Natchez Plant	GP-Ready Mix Concrete	03/24/2025	11/30/2025
MS0033324	Saint Catherine Gravel Company, Washington Plant	Water-NPDES	03/25/1998	03/09/2003
MS0033324	Saint Catherine Gravel Company, Washington Plant	Water-NPDES	06/03/2003	05/31/2008
MSU085041	Saint Catherine Gravel Company, Washington Plant	Water-SOP	03/07/1986	03/06/1991

Office of Pollution Control Contacts

Name	Assignment	Phone Number
Pilgrim, Kenneth	Office of Pollution Control Air Compliance Manager	(601) 961-5368
Pilgrim, Kenneth	Office of Pollution Control Air Compliance Staff	(601) 961-5368
Whitlock, Jaricus	Office of Pollution Control Air Permit Manager	(601) 961-5747
Griffith, Michael	Office of Pollution Control Water Compliance Manager	(601) 961-5559
Whatley, Caleb	Office of Pollution Control Water Compliance Staff	601-961-5206
Simonson, Becky	Office of Pollution Control Water Permit Manager	(601) 961-5580
Simonson, Becky	Office of Pollution Control Water Permit Staff	(601) 961-5580

Active Coverages Available Online

Permit Type	Permit Number	Issue Date	Permit Document
General Permit - Ready Mix Administrative Modification	MSG110193	03/24/2025

Current Status of Individual Permit Applications

Program	Permit Type	Permit Number	Status Date	Status Desc.
Air	State Operating Permit	004000034	07/09/1991	Permit Issued
Water	NPDES Renewal	MS0033324	06/03/2003	Permit Issued
Water	State Operating Permit	MSU085041	03/07/1986	Permit Issued

Current Status of General Permit Applications

Program	Permit Type	Permit Number	Status Date	Status Desc.	PDF
General Permit	Baseline Recoverage	MSR000364	03/20/2001	Coverage Terminated
General Permit	Mining Recoverage	MSR320034	02/20/2013	Coverage Terminated
General Permit	Ready Mix Administrative Modification	MSG110193	03/24/2025	Send 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.

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