TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 092678 Notice Type: Planned Service Outage Subject: PLANNED SERVICE OUTAGES - JULY 2025 THROUGH NOVEMBER 2025 Location: MARKET AND FIELD AREA Critical: N Post Date/Time: 07/11/2025 10:12 AM Notice Status: Supersede Prior Notice: 092645 For Gas Day(s): 07/11/2025 - 11/30/2025 Notice Effective Date/Time: 07/11/2025 10:12 AM Notice End Date/Time: 12/01/2025 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 July 2025 through November 2025. 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): Sunray High (Group 32) and Sunray Low (Group 10) Location: Northern's compressor station in Sunray, Texas Project Description: Pipeline and compressor station maintenance Months: July 2025 through September 2025 Direction of Flow: Receipt: Sunray High (Group 32) and Sunray Low (Group 10) Capacity Impact: Primary firm service will not be impacted for Sunray High (Group 32) and Sunray Low (Group 10). Revision: Capacity impacts for Sunray High (Group 32) and Sunray Low (Group 10) have been updated for July 2025. Please see Operationally Available Capacityon Northern's website for current flow information and the Field Area Group Allocation Mapsand Market Area Group Allocation Maps for a list of impacted points. If you have any questions, contact your customer service or marketing representative.