TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 093255 Notice Type: Planned Service Outage Subject: PLANNED SERVICE OUTAGES - JULY 2025 THROUGH NOVEMBER 2025 Location: MARKET AND FIELD AREA Critical: N Post Date/Time: 07/25/2025 10:16 AM Notice Status: Supersede Prior Notice: 093218 For Gas Day(s): 07/25/2025 - 11/30/2025 Notice Effective Date/Time: 07/25/2025 10:11 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): ANR/NNG Greensburg (POI 179) and PEPL/NNG Mullinville (POI 173) Location: Northern's mainline between Mullinville, Kansas, and Macksville, Kansas Project Description: Pipeline maintenance Month: August 2025 and September 2025 Direction of Flow: Receipt: PEPL/NNG Mullinville (POI 173) Delivery: ANR/NNG Greensburg (POI 179) Capacity Impact: Northern anticipates primary firm service will be impacted for PEPL/NNG Mullinville (POI 173). Primary firm service will not be impacted for ANR/NNG Greensburg (POI 179). 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.