TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 095961 Notice Type: Scheduling Alert Subject: CAPACITY UPDATE VIKING/NNG PIERZ (61667) AND VIKING/NNG POLK (62983) Critical: N Post Date/Time: 09/24/2025 01:40 PM Notice Status: Initiate For Gas Day(s): 10/01/2025 - 10/30/2026 Notice Effective Date/Time: 10/01/2025 09:00 AM Notice End Date/Time: 10/31/2026 08:59 AM Required Response Indicator Description: 5-No response required Notice Text: Northern would like to inform customers of an upcoming adjustment to operational receipt capacities at Viking/NNG Pierz Inter (POI 61667) and Viking/NNG Polk ITE (POI 62983). Due to physical load profiles within the Pierz Region Receipt Allocation Group (Group 1120) consistently falling below the operational capacity at the Viking/NNG Pierz Inter (POI 61667) interconnect, and operational constraints preventing physical flow outside the allocation group, Northern will be reducing the operational capacity at the Viking/NNG Pierz Inter (POI 61667) interconnect during the summer months. Similarly, due to physical load profiles within the Ladysmith Branch Line Allocation Group (Group 1037), Northern will be raising the operational capacity at the Viking/NNG Polk ITE (POI 62983) interconnect during the shoulder months of October and April. Effective October 1, 2025, the following operational capacities will be established as the new long-term operational capacities for Viking/NNG Pierz Inter (POI 61667) and Viking/NNG Polk ITE (POI 62983). POI 61667 62983 Viking/NNG Pierz Inter Viking/NNG Polk ITE October 50,000 6,000 November 75,000 10,000 December 75,000 10,000 January 75,000 10,000 February 75,000 10,000 March 75,000 10,000 April 50,000 6,000 May 40,803 3,500 June 40,803 3,500 July 40,803 3,500 August 40,803 3,500 September 40,803 3,500 If you have any questions, contact your customer service or marketing representative.