TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 095281 Notice Type: Planned Service Outage Subject: PLANNED SERVICE OUTAGES - SEPTEMBER 2025 THROUGH NOVEMBER 2025 Location: MARKET AND FIELD AREA Critical: N Post Date/Time: 09/11/2025 02:00 PM Notice Status: Supersede Prior Notice: 095129 For Gas Day(s): 09/11/2025 - 11/30/2025 Notice Effective Date/Time: 09/11/2025 02:00 PM 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 September 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): El Paso/NNG Plains 30” (REC) (POI 57088) Location: Northern's meter station in Yoakum County, Texas Project Description: Station maintenance Month: September 2025 Direction of Flow: Receipt: El Paso/NNG Plains 30” (REC) (POI 57088) Capacity Impact: Northern does not anticipate primary firm service will be impacted for El Paso/NNG Plains 30” (REC) (POI 57088). Revision: Capacity impacts for El Paso/NNG Plains 30” (REC) (POI 57088) have been updated for September 2025. 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.