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Columbia Gulf Transmission Notice 25952308

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TSP Name

Columbia Gulf Transmission, LLC

TSP

007854581

Date

Time

Notice ID

25952308

Notice Type Description: Maintenance
Notice Stat Desc: Supersede
Prior Notice: 25948216
Critical: Y
Reqrd Rsp Desc: No Response Required

Post
Notice Effective
Notice End

Response

09/25/25
09/25/25
11/17/25



1:53:21 PM
12:00:00 AM
12:00:00 AM



Subject: UPDATED: Hartsville Compressor Station Maintenance (HartSEG)

Author: Dillon Schoolcraft

Notice Text

Columbia Gulf Transmission, LLC (CGT) notifies customers the maintenance at Hartsville Compressor Station is still ongoing. Based on current operating conditions, the Backhaul Capacity has been raised to 2,175,000 Dth effective Intraday 2 Cycle for Gas Day September 25, 2025 and continuing until further notice.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).Please contact your Customer Services Representative with any questions.
***Previous Posting ***
Columbia Gulf Transmission, LLC (CGT) reminds customers of upcoming maintenance at Hartsville Compressor Station beginning Tuesday, September 9, 2025, through Monday, November 17, 2025. As a result, the backhaul capacity through HartSEG will be reduced to a level between 2,000,000 Dth and 2,275,000 Dth effective Timely Cycle for Gas Day September 9, 2025. CGT encourages customers to monitor the Daily Capacity Posting for the specific HartSEG setting each day of the outage. 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.HartSEG·        Estimated Capacity Setting: 2,000,000 - 2,275,000 Dth ·        Design Capacity: 2,544,656 Dth·        Posted Percentage: 79% - 89%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 July 1-7, 2025, pursuant to the provisions in the Tariff. Please contact your Customer Services Representative with any questions.