TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 101677 Notice Type: Over-Under Performance Subject: UPDATE 2: UNDERPERFORMANCE - FIELD AREA RECEIPT POINTS Location: FIELD AREA Critical: N Post Date/Time: 01/28/2026 08:40 AM Notice Status: Supersede Prior Notice: 101609 For Gas Day(s): 01/27/2026 - 01/29/2026 Notice Effective Date/Time: 01/28/2026 08:40 AM Notice End Date/Time: 01/30/2026 08:59 AM Required Response Indicator Description: 5-No response required Notice Text: Update 2: Northern is no longer experiencing underperformance at DCP Linam Ranch Plant Outlet (POI 1709). Northern is currently experiencing underperformance at the following Field Area receipt point: POI Field Area Receipt Point 79313 Enterprise Midland Basin Newberry Plant Update 1: Northern is no longer experiencing underperformance at ETC Martin County (POI 78949), Coronado Midmar Martin Co (POI 79064) and Fasken Andrews Co (POI 79663). Enterprise Midland Basin Newberry Plant(POI 79313) has been added to the list of underperforming receipt points. As a result, Northern may be required to allocate the underperforming receipt point to actual flowing volumes during an intraday nomination cycle to protect pipeline integrity. As performance improves at the receipt point, allocations may be lifted. If you have any questions, contact your customer service or marketing representative.