TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 106967 Notice Type: Planned Service Outage Subject: PLANNED SERVICE OUTAGES - MAY 2026 THROUGH OCTOBER 2026 Location: MARKET AND FIELD AREA Critical: N Post Date/Time: 05/22/2026 11:12 AM Notice Status: Supersede Prior Notice: 106849 For Gas Day(s): 05/22/2026 - 10/31/2026 Notice Effective Date/Time: 05/22/2026 11:00 AM Notice End Date/Time: 11/01/2026 08:59 AM Required Response Indicator Description: 5-No response required Notice Text: Northern has scheduled the service outages that will affect operating capacity within the months of May 2026 through October 2026. Please review the Planned Service Outage Summaryfor detailed information related to each outage. A brief description of the most recent change(s) to the Planned Service Outage Summary follows. Field Area Allocation Group(s)/Point(s): Spraberry 12-inch (Group 601), Spraberry 16-inch (Group 1112) and Spraberry Station (Group 602) Location: Northern's compressor station located in Spraberry, Texas Project Description: Compressor station and pipeline maintenance Month: May 2026 through July 2026 Direction of Flow: Delivery: Spraberry 12-inch (Group 601) and Spraberry 16-inch (Group 1112) Receipt: Spraberry Station (Group 602) Capacity Impact: Primary firm service will be impacted for Spraberry 12-inch (Group 601), Spraberry 16-inch (Group 1112) and Spraberry Station (Group 602). Revision: Capacity impacts for Spraberry 12-inch (Group 601) and Spraberry 16-inch (Group 1112) have been updated for May 2026 and June 2026. Please see Operationally Available Capacityon Northern's website for current flow information and the Field Area Group Allocation Mapsand Market Area Group Allocation Mapsfor a list of impacted points. If you have any questions, contact your customer service or marketing representative.