TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 067649 Notice Type: Planned Service Outage Subject: PLANNED SERVICE OUTAGES - NOVEMBER 2022 THROUGH JANUARY 2023 Location: MARKET AND FIELD AREA Critical: N Post Date/Time: 11/21/2022 01:45 PM Notice Status: Terminate Prior Notice: 067593 For Gas Day(s): 11/21/2022 - 12/12/2022 Notice Effective Date/Time: 11/21/2022 01:45 PM Notice End Date/Time: 12/12/2022 12:30 PM 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 November 2022 through January 2023. 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. Market/Field Area Combined Allocation Group(s)/Point(s): Field to Demarc (Group 831), Beatrice North (Group 832) and Trailblazer/NNG Beatrice (POI 1318) Location: Northern's mainlines between the Tescott, Kansas and Ogden, Iowa compressor stations Project Description: Pipeline maintenance Months: November 2022 through January 2023 Direction of Flow: Delivery for Field to Demarc (Group 831) and Beatrice North (Group 832) and receipt for Trailblazer/Beatrice (POI 1318) Capacity Impact: Primary firm service will not be impacted. Revision: Capacity impacts have been updated for Field to Demarc (Group 831) and Beatrice North (Group 832) and added for Trailblazer/Beatrice (POI 1318) for December 2022. Field Area Allocation Group(s)/Point(s): Sunray Low (Group 10), Sunray High (Group 32), Beaver C System (Group 31), Beaver North (Group 1025) and Beaver C and Beaver North (Group 1080) Location: Sunray, Texas compressor station Project Description: Station maintenance Months: November 2022 Direction of Flow: Receipt for Sunray Low (Group 10), Sunray High (Group 32) and Beaver C System (Group 31), and delivery for Beaver North (Group 1025) and Beaver C and Beaver North (Group 1080) Capacity Impact: Primary firm service will not be impacted. Revision: Capacity impacts have been added for Sunray Low (Group 10), Beaver C System (Group 31) and Beaver North (Group 1025) for December 2022. 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.