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: Chappell Ford

Southern Natural Gas Company LLC, Rankin Compressor Station, located at 191 Andrew Chapel Road, in Brandon, MS, (504) 481-0557, has applied to the Mississippi Department of Environmental Quality (MDEQ) for the following permitting action(s):  Title V Renewal Air Ref. No. 2380-00083. The applicant's operations fall within SIC Code 4922.  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.  
Southern Natural Gas Company (SNG) owns and operates its Rankin Compressor Station for the purpose of transporting natural gas through its pipeline distribution system. Natural gas compression at the Rankin Compressor Station is accomplished through three (3) 1,350-HP-each natural gas-fired Cooper Bessemer compressor engines.  The station also operates one (1) 225-HP natural gas-fired emergency generator engine and one (1) 1.0 MMBTU/hr natural gas fired process boiler.  Other sources of emissions include fugitive emissions from piping and equipment and emissions from insignificant activities.
The facility is not one of the 28 categorical facilities listed in 40 CFR 52.21(b)(1)(i)(c)(iii); therefore, the PSD threshold for a major source is 250 tpy.  The potential emissions of NOx from the equipment at the compressor station does exceed 250 tpy. Therefore, the facility is considered an existing major source for PSD purposes.  However, the permit action is to renew the Title V permit which will not trigger a Prevention of Significant Deterioration (PSD) Review. The facility’s potential-to-emit (PTE) exceeds the Title V major source threshold of 100 tons per year (tpy) for the criteria air pollutant: Nitrogen Oxides (NOX).  The facility’s potential-to-emit hazardous air pollutants (HAPs) does not exceed the major source threshold of 25 tpy of total HAPs and but it does exceed the Title V Major Source threshold of 10 tpy for the individual HAP Formaldehyde. SNG is not requesting any new federally enforceable limitations with this permitting action.
No modifications to the Title V permit are being requested along with the permit renewal. However, on March 4, 2025, SNG submitted a request for a 502(b)(10) modification for the replacement of a 0.8 MMBtu/hr Cleaver Brooks natural gas-fired boiler (Emission Point AA-007) with a 1.0 MMBtu/hr Cleaver Brooks (Model CFC-E) natural gas-fired boiler (Emission Point AA-009). This change has been reflected in the permit renewal. 
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 Chappell Ford at https://www.mdeq.ms.gov/Ford-Chappell/ 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 Chappell Ford at https://www.mdeq.ms.gov/Ford-Chappell/ 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.