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: July 15, 2026	MDEQ Contact: Clinton Gentry

Texas Eastern Transmission LP, Kosciusko Compressor Station Number 202, located at 4196 Highway 741 S, in Kosciusko, MS, (601) 289-2991, has applied to the Mississippi Department of Environmental Quality (MDEQ) for the following permitting action: Significant Modification to the Air Title V Operating Permit (TVOP), Ref. No. 0120-00029. An Information Relative to the TVOP 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 Information Relative to the TVOP also addresses the changes to emissions resulting from the modification of the facility.  
Texas Eastern Transmission, LP (owned by Enbridge, Inc.) operates the Kosciusko Compressor Station for the purpose of transporting natural gas through its pipeline transmission system. The applicant's operations fall within SIC Code 4922 - Natural Gas Transmission. Currently, natural gas compression at the Kosciusko Compressor Station is accomplished through the operation of 14 compressor engines, each rated at 2,500 horsepower (hp), and one 16,875 hp electric centrifugal compressor. The Kosciusko Compressor Station is a major Title V source because emissions of carbon monoxide, nitrogen oxides, volatile organic compounds, and hazardous air pollutants exceed the major source thresholds.
With this permitting action, Texas Eastern Transmission is proposing a significant modification to the TVOP to address the replacement of all 14 natural gas-fired compressor engines with two 11,100 hp natural gas-fired turbines and one 18,100 hp natural gas-fired turbine. Because this modification will result in projected emissions changes below the de minimis NSR modification thresholds specified in 11 Miss. Admin. Code Pt. 2, R. 2.1.C(5)., a permit to construct the new turbines is not required. The modification will result in significant decreases to facility-wide potential emissions for all regulated air pollutants, with the exception of sulfur dioxide, such that following startup of the turbines, the facility will only be a major Title V source for potential emissions of carbon monoxide. The modification to the TVOP addresses the current requirements for the existing compressor engines, as well as the future requirements that will become applicable to the new turbines, the new emergency generator, and facility-wide equipment leaks upon startup. The facility will also become subject to additional federal regulations, including 40 CFR Part 60, Subparts KKKKa and OOOOb.
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 Clinton Gentry at https://www.mdeq.ms.gov/gentry-clinton/ 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(s). A public hearing will be held if the Permit Board finds a significant degree of public interest in the proposed permit(s). Persons wishing to request a public hearing may do so by submitting that request in writing to Clinton Gentry at https://www.mdeq.ms.gov/gentry-clinton/ 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.
After receipt of public comments and thorough consideration of all comments, the staff will formulate its recommendations for permit issuance and a proposed permit if that is the recommendation. The Title V Permit to Operate is a permit that is required by Title V of the Federal Clean Air Act and the Mississippi Air and Water Pollution Control Law. The Title V permit is a Federally-enforceable permit as well as a State permit. Therefore, the U.S. Environmental Protection Agency (EPA) will also be allowed an opportunity to review the application, proposed permit, and all comments received during the public comment period prior to Permit Board action on the application.   
The status regarding EPA’s 45-day review of this project and the deadline for citizen’s petitions can be found at the following website address:  https://www.epa.gov/caa-permitting/mississippi-proposed-title-v-permits. 
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.