Public Notice
Mississippi Environmental Quality Permit Board
P. O. Box 2261 | Jackson, MS 39225
515 East Amite St. | Jackson, MS 39201
Telephone No. (601) 961-5171

Public Notice Start Date: August 5, 2026	MDEQ Contact: Ryan Wigginton

Olin Winchester LLC, located at 411 County Road 101 in Oxford, MS, (662) 513-2002, has applied to the Mississippi Department of Environmental Quality (MDEQ) for the following permitting action:  Renewal of Synthetic Minor Operating Permit Ref. No. 1420-00029. The applicant's operations fall within SIC Code 3482: Small Arms Ammunition.  A Statement of Basis has been prepared that contains a discussion of the decision-making that went into the development of the permit and provides the permitting authority, the public, and other government bodies a record of the technical issues surrounding issuance of the permit. The Statement of Basis also addresses any changes to emissions and/or discharges resulting from any modification of the facility.  
Olin Winchester operations include two (2) adjoining business units: the Rimfire facility and the Centerfire facility.  The Rimfire facility is used for the production, assembly, and shipping of small arms ammunition, power tool loads, and military ammunition.  The Centerfire facility is used for the production, assembly, and shipping of small arms ammunition. Both facilities are adjacent and their operations are similar. Therefore, for permitting purposes they are considered one source and are permitted under one permit. The facility has the potential to exceed the applicable Title V thresholds for volatile organic compounds (VOCs) [i.e., 100 tons per year (tpy)], individual Hazardous Air Pollutant (HAP) (i.e., 10 tpy), and total HAP (i.e., 25 tpy).  Therefore, in order to be considered a synthetic minor source, annual limitations (based on a 12-month rolling total) have been established for the emission of each individual HAP, all HAPs in total, and VOCs to remain below these thresholds.  By complying with these emission limitations, Olin Winchester will be considered an area source for HAP emissions.
The staff of the Permit Board has developed this draft permit based on information submitted to the Permit Board by the applicant, appropriate State and Federal agencies and other interested parties. The staff of the Permit Board is soliciting all relative information pertaining to the proposed activity, including public comment, to ensure the draft permit complies with all State and Federal regulations. Public review and comment on the draft permit and supporting documentation is an important element in the staff evaluation and its consideration of key aspects of the permit action. The draft permit conditions have been developed to ensure compliance with all State and Federal regulations but are subject to change based on information received as a result of public participation.
Persons wishing to comment upon or object to the proposed determinations are invited to submit comments in writing to Ryan Wigginton at https://www.mdeq.ms.gov/ozment-ryan/ or to the Permit Board address shown above, no later than the end of the thirty (30) day public notice. All comments received by this date will be considered in the formulation of final determinations regarding the application.  A public hearing will be held if the Permit Board finds a significant degree of public interest in the proposed permit. Persons wishing to request a public hearing may do so by submitting that request in writing to Ryan Wigginton at https://www.mdeq.ms.gov/ozment-ryan/ or to the Permit Board address shown above.  The Permit Board is limited in the scope of its analysis to environmental impact.  Any comments relative to zoning or economic and social impacts are within the jurisdiction of local zoning and planning authorities and should be addressed to them.
Additional details about the application, including a copy of the draft permit, are available by writing or calling the Public Records Request Officer at the above Permit Board address and telephone number or by completing the form at the following website:  https://www.mdeq.ms.gov/about-mdeq/public-records-request/public-records-request-form/.  Additionally, a copy of the draft permit and statement of basis may be found on the MDEQ’s website at: https://opc.deq.state.ms.us/publicnotice.aspx. This information is also available for review at the office of the MDEQ at the Permit Board address shown above during normal business hours. Please bring the foregoing to the attention of persons whom you know will be interested.