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TSP Name
Columbia Gas Transmission, LLC
TSP
054748041
Date
Time
Notice ID
25976827
Notice Type Description: Operational Alert
Notice Stat Desc: Supersede
Prior Notice: 25976825
Critical: Y
Reqrd Rsp Desc: No Response Required
Post
Notice Effective
Notice End
Response
02/01/26
02/01/26
03/01/26
7:55:17 AM
12:00:00 AM
12:00:00 AM
Subject: LIFTED: Operational Alert: Underperformance at TGP-Milford Interconnect (B18)
Author: Cindy Woomer
Notice Text
Columbia Gas Transmission, LLC (TCO) notifies customers the flow resumed at the TGP-Milford interconnect on Saturday night, January 31, 2026. As a result, TCO is lifting the Operational Alert effective immediately. Please contact your Customer Services Representative with any questions. ***Previous Posting***Columbia Gas Transmission, LLC (TCO) notifies customers of underperformance at the Tennessee Gas Pipeline (TGP) Milford interconnect (MLI B18). Due to extreme cold temperatures across the system, TCO has no operational flexibility for negative imbalances resulting from underperformance, as outlined in the Operational Flow Order posted on January 14, 2026 (Notice ID 25973710), and Critical Day notices posted on January 14, 2026 (Notice ID 25973708).
As a result of the underperformance, operating pressures on TCO’s Line 1278, and the Millennium Pipeline system, will likely decrease until the flow resumes at Milford.
TCO is actively coordinating with TGP and other interconnecting operators until the underperformance is resolved.
TCO will provide updates as additional information becomes available.
Please contact your Customer Services Representative with any questions.
Columbia Gas Transmission, LLC
TSP
054748041
Date
Time
Notice ID
25976827
Notice Type Description: Operational Alert
Notice Stat Desc: Supersede
Prior Notice: 25976825
Critical: Y
Reqrd Rsp Desc: No Response Required
Post
Notice Effective
Notice End
Response
02/01/26
02/01/26
03/01/26
7:55:17 AM
12:00:00 AM
12:00:00 AM
Subject: LIFTED: Operational Alert: Underperformance at TGP-Milford Interconnect (B18)
Author: Cindy Woomer
Notice Text
Columbia Gas Transmission, LLC (TCO) notifies customers the flow resumed at the TGP-Milford interconnect on Saturday night, January 31, 2026. As a result, TCO is lifting the Operational Alert effective immediately. Please contact your Customer Services Representative with any questions. ***Previous Posting***Columbia Gas Transmission, LLC (TCO) notifies customers of underperformance at the Tennessee Gas Pipeline (TGP) Milford interconnect (MLI B18). Due to extreme cold temperatures across the system, TCO has no operational flexibility for negative imbalances resulting from underperformance, as outlined in the Operational Flow Order posted on January 14, 2026 (Notice ID 25973710), and Critical Day notices posted on January 14, 2026 (Notice ID 25973708).
As a result of the underperformance, operating pressures on TCO’s Line 1278, and the Millennium Pipeline system, will likely decrease until the flow resumes at Milford.
TCO is actively coordinating with TGP and other interconnecting operators until the underperformance is resolved.
TCO will provide updates as additional information becomes available.
Please contact your Customer Services Representative with any questions.