Force Majeure: Mainline-300, Effective EVE Cycle for March 11, 2026 (AlexSEG)

TSP Name

Columbia Gulf Transmission, LLC

TSP

007854581

Date

Time

Notice ID

25984315

Notice Type Description: Force Majeure
Notice Stat Desc: Initiate
Prior Notice:
Critical: Y
Reqrd Rsp Desc: No Response Required

Post
Notice Effective
Notice End

Response

03/10/26
03/10/26
04/10/26



2:45:18 PM
12:00:00 AM
12:00:00 AM



Subject: Force Majeure: Mainline-300, Effective EVE Cycle for March 11, 2026 (AlexSEG)

Author: Tyler King

Notice Text

Columbia Gulf Transmission, LLC (CGT) notifies customers of the need for an immediate pressure reduction on Mainline-300 between Delhi Compressor Station and Alexandria Compressor Station in Louisiana. This necessary measure is being taken due to anomalies discovered during a recent in-line inspection of the pipeline pursuant to PHMSA regulation 49 CFR 192.933. Therefore, pursuant to Section 15 of the General Terms and Conditions of CGT’s FERC Gas Tariff, CGT is declaring a Force Majeure effective Gas Day Tuesday, March 10, 2026, and continuing until further notice. In an effort to minimize the commercial impact, the previously posted planned maintenance at Alexandria Compressor Station Unit 908 (Notice ID: 25982011), scheduled to begin on March 10, 2026, has been rescheduled to a later date yet to be determined. As a result of the Force Majeure, the Backhaul Capacity through AlexSEG will be reduced to 2,325,000 Dth effective Evening Cycle for Gas Day March 11, 2026. CGT anticipates this restriction may result in curtailments to Interruptible, Secondary Firm, and Primary Firm services. Please see the details provided below for more information. AlexSEG

• ·       Capacity Setting: 2,325,000 Dth
• ·        Design Capacity: 2,774,756 Dth
• ·        Posted Percentage: 84% 

CGT encourages customers to monitor the scheduled volumes on the Operationally Available Capacity screen on Informational Postings, as nominations can fluctuate based on market conditions. Reservation Charge Credits (RCCs) will be determined per the process set forth in the General Terms and Conditions, Section 40 of CGT’s FERC Gas Tariff (Tariff). By means of this notice, CGT is establishing the 7-day Average Usage Quantity to be the period of December 30, 2025 – January 5, 2026, pursuant to the provisions in the Tariff. Please contact your Customer Services Representative with any questions.