What FERC Staff Reviewed
The Kosciusko Junction Pipeline Project appears in Dockets CP25-547-000 and CP25-549-000. FERC's July 24 notice identifies Gulf South Pipeline Company and Texas Gas Transmission, both Boardwalk subsidiaries, as the project applicants.
Texas Gas proposes to sell and Gulf South proposes to acquire about 98 miles of the existing Greenville Lateral and associated facilities. Gulf South also proposes 110.9 miles of new pipeline facilities, including a new 36-inch-diameter line and a roughly 700-foot 20-inch lateral, plus two new compressor stations, modification of the Isola Compressor Station, and four new meter stations.
Nine-County Mississippi Footprint
FERC identifies proposed facilities in Washington, Sunflower, Humphreys, Holmes, Attala, Leake, Newton, Jasper, and Clarke counties. Staff found that most adverse environmental effects would be temporary or short term, while some forest and wetland effects would be long term. With recommended mitigation, staff said effects would be less than significant except that climate-change impacts could not be characterized as significant or insignificant.
Those are staff environmental findings. FERC Commissioners will consider the EIS and staff recommendations when deciding the applications; the July 24 notice is not the Commission's certificate decision.
Commercial Buyer Read
| Signal | Market Read | Buyer Move |
|---|---|---|
| Staff final EIS issued | FERC staff completed its environmental review for CP25-547-000 and CP25-549-000 and will send recommendations into the Commission record. | Track the Commission certificate decision and any conditions before treating the project as approved. |
| 110.9 miles of new facilities | Gulf South proposes 110.9 miles of new pipeline facilities, including a new 36-inch line and associated compressor and meter work. | Map the proposed route and interconnections to the account delivery point; mileage alone does not establish useful capacity or basis relief. |
| Existing-asset transfer | Texas Gas proposes to sell and Gulf South proposes to acquire about 98 miles of the Greenville Lateral and related facilities. | Keep the asset transfer separate from new-build scope when evaluating future scheduling, tariffs, and operational control. |
| Applicant timing | The notice identifies proposed construction beginning in December 2026 and a requested April 28, 2028 service date, subject to approvals. | Use the dates as a watchlist, not as guaranteed construction or in-service milestones. |
What To Watch Next
- Commission order: watch for certificate approval, denial, or project conditions in both dockets.
- Applicant schedule: proposed December 2026 construction and April 28, 2028 service dates remain contingent on approvals and execution.
- Tariff and capacity evidence: connect any future service to pipeline rates, nominations, interconnections, and the account delivery point.
- Construction and in-service filings: keep environmental review, certificate authority, construction, and operation as separate page states.
Sources: Federal Energy Regulatory Commission, July 24, 2026 final-EIS notice and Kosciusko Junction Pipeline Project page, Docket Nos. CP25-547-000 and CP25-549-000. Reviewed July 25, 2026.