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TSP Name Columbia Gulf Transmission, LLC TSP 007854581 Notice Type Description: Maintenance Notice Stat Desc: Initiate Prior Notice: Critical: Y Reqrd Rsp Desc: No Response Required Post Notice Effective Notice End Response Post Date: 09/28/26 09/28/26 10/28/26 Subject: Subject: Lake Arthur Compressor Station Maintenance (4246), Effective October 6 – 9, 2026 Author: Author: Jonah Skiles Notice Text Columbia Gulf Transmission LLC (CGT) reminds customers of upcoming maintenance at Lake Arthur Compressor Station, beginning on Tuesday, October 6, 2026, through Friday, October 9, 2026. As a result, the Backhaul capacity at 4246 – Cameron LNG will be reduced to 700,000 Dth effective Timely Cycle for Gas Day Tuesday, October 6, 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. 4246 – Cameron LNG · Estimated Delivery Capacity Setting: 700,000 Dth (Primary Only) · Design Capacity: 800,000 Dth · Posted Percentage: 88% Due to the potential impact to firm service, 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 September 21-27, 2026, pursuant to the provisions in the Tariff. Please contact your Customer Services Representative with any questions.