TSP Name: Northern Natural Gas Company TSP: 784158214 Notice ID: 079717 Notice Type: Computer System Status Subject: SCHEDULED SYSTEM APPLICATION MAINTENANCE Critical: N Post Date/Time: 08/13/2024 02:00 PM Notice Status: Supersede Prior Notice: 074305 For Gas Day(s): 08/13/2024 - 12/30/2999 Notice Effective Date/Time: 08/13/2024 02:00 PM Notice End Date/Time: 12/31/2999 08:59 AM Required Response Indicator Description: 5-No response required Notice Text: Northern's system application maintenance window occurs daily from 11 p.m. to 4:30 a.m. During this time, all of Northern's business applications will be unavailable. EDI transactions will be processed once the application system returns to normal operations. All times are Central Clock Time (CCT). If you have any questions, please contact your customer service representative.