NATGAS PIPELINE CRITICAL NOTICE: Columbia Gas Construction and Maintenance Schedule Posting

( This is the verbatim text of a critical notification provided by the pipeline operator to its shippers. The information has not been independently verified. This item may be followed by a news story depending on the severity of the incident's impact, if any, on operations. ) Company Name: Columbia Gas Notice Type Description: Maintenance Posted Date: 10/12/26 2:35:37 PM Effective Date: 10/12/26 4:00:00 AM End Date: 11/12/26 5:00:00 AM Subject: Construction and Maintenance Schedule Posting Posting Text: As a courtesy, Columbia Gas Transmission, LLC (TCO) hereby notifies customers the Construction and Maintenance Schedule posted under "Construction and Maintenance" on the Informational Postings website has been updated. TCO reminds customers to please check the Maintenance Schedule on a regular basis.The current schedule has been updated to reflect maintenance activity on the following:* Revised dates — Line BM39 Pipeline Maintenance — December 7-11, 2026 (Previously scheduled for September 29 — October 3, 2026)Additionally, the following file(s) can be located on Informational Postings under Construction and Maintenance References: More information is available at