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Pipeline: Transco Notice: Operational Flow Order - Imbalance Posted: 08/12/2026 03:20:34 PM Notice ID: 17158615 Notice 17158615 TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC Critical: Y Notice Eff Date: 08/10/2026 Notice Eff Time: 09:00:00 CDT Notice End Date: 08/15/2026 Notice End Time: 09:00:00 CDT Notice ID: 17158615 Notice Stat Desc: Supersede Notice Type Desc: OFO Post Date: 08/12/2026 Post Time: 15:20:34 CDT Prior Notice: 17151787 Reqrd Rsp Desc: Immediate response required of an operational nature may be required of impacted shippers Rsp Date: Rsp Time: TSP: 007933021 TSP Name: TRANSCONTINENTAL GAS PIPE LINE COMPANY, LLC Notice Text: Subject: Operational Flow Order - Imbalance Transco provides notice of limited flexibility in managing system imbalances due to continued extreme temperature forecasts in Zone 5. In order to maintain operational pressures and adequate gas supplies required to provide an efficient and reliable firm service, Transco is issuing an Operational Flow Order (OFO) pursuant to Section 52 of its General Terms and Conditions of it’s Tariff. Please refer to the table below for the effected zones, dates and tolerance percentages. Beginning Gas Day: Wednesday, August 12, 2026 9:00 AM CT Monday, August 17, 2026 9:00AM CT Ending Gas Day: Saturday, August 15, 2026 9:00 AM CT Tuesday, August 18, 2026 9:00 AM CT OFO Area(s): Zone 5 Zone 5 Tariff Reference for OFO Issuance:* (d) (d) Type of OFO: Imbalance Imbalance Type of Imbalance: Due From Shipper Due From Shipper Transactions Include: Deliveries** Deliveries** Beginning Cycle: Timely Timely Tolerance % Allowed (or 1000 dth, Zone whichever is greater): Due From Shipper 7% Due From Shipper 7% Affected Shipper(s) (DUNS #):**** Affected Location(s) (DRN #/Loc ID):***** All All Retro Scheduling Available Yes Yes OBA Subject to OFO: No No If Yes, OBA Parties (DUNS #):*** *Circumstances under which Seller may determine that an OFO must be issued include, but are not limited to in Section 52.2 of Transco's FERC Gas Tariff General Terms and Conditions: Responding to an event of force majeure; Accommodating capacity limitations resulting from the need to perform maintenance and/or repairs; Ensuring current and future storage capabilities and maintenance of line pack; Maintaining operational pressures and adequate gas supplies required to provide an efficient and reliable firm service; Responding to any event which Seller believes in its sole judgment may jeopardize the integrity of its system. ** OFO based on all transactions with deliveries in affected OFO area. ***OFO based on all transactions with receipts in affected OFO area. **** If specific DUNS #s have been identified, only imbalances created by those shippers/OBA parties will be subject to the OFO provisions. *****If specific DRN #/Loc ID's have been identified, only imbalances created at those location(s) will be subject to the OFO provisions. This OFO is directed to shippers consistent with Section 52 of Transco's FERC Gas Tariff General Terms and Conditions with a minimum of $50 per dt per day penalty. This OFO will continue until further notice. Buyers with imbalances greater than the allowed tolerance will be subject to penalties specified in Section 52 of Transco's FERC Gas Tariff General Terms and Conditions. Additional information on Operational Flow Orders is available at this link: http://www.1line.williams.com/Transco/files/training/Critical_Day.pdf Please contact your Transportation Services Representative if you have any questions.