TSP Name:                                  Northern Natural Gas Company
TSP:                                       784158214
Notice ID:                                 094657
Notice Type:                               Planned Service Outage
Subject:                                   PLANNED SERVICE OUTAGES - AUGUST 2025 THROUGH NOVEMBER 2025
Location:                                  MARKET AND FIELD AREA
Critical:                                  N
Post Date/Time:                            08/29/2025 10:30 AM
Notice Status:                             Supersede
Prior Notice:                              094615
For Gas Day(s):                            08/29/2025 - 11/30/2025
Notice Effective Date/Time:                08/29/2025 10:30 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 August
2025 through November 2025. Please review the Planned Service Outage Summary for detailed information related to each
outage.



A brief description of the
most recent change(s) to the Planned Service Outage Summary follows. 

Northern completed maintenance at the
Spraberry, Texas, compressor station impacting Spraberry 12-inch (Group 601)
and Spraberry 16-inch (Group 1112) ahead of scheduled. As a result, capacity
impacts for the above-mentioned groups have been updated for the Intraday 2
nomination cycle for Gas Day Friday, August 29, 2025.



Field Area 

Allocation Group(s)/Point(s): Beaver North (Group 1025), Beaver C & Beaver North
(Group 1080), Brownfield North (Group 1022), Pampa North (Group 1023), Beaver C
System (Group 31) and Mitchell to Gaines (Group 825)

Location: Northern's compressor stations and mainline between
Florey, Texas, and Mullinville, Kansas

Project Description: Station and pipeline maintenance

Month: August 2025 through November 2025

Direction of Flow: 


Receipt: Beaver C System (Group 31) and Mitchell to Gaines (Group 825)

Delivery: Beaver North (Group 1025),
Beaver C & Beaver North (Group 1080), Brownfield North (Group 1022) and
Pampa North (Group 1023)

Capacity Impact: Northern anticipates
primary firm service will be impacted for Mitchell to Gaines (Group 825). Northern does not anticipate primary firm service will be
impacted for Beaver C & Beaver North (Group 1080), Brownfield North (Group
1022) and Pampa North (Group 1023). Primary firm service will not be
impacted for Beaver North (Group 1025) and Beaver C System (Group 31).

Revision: Normal operating capacity has been updated for Beaver
C & Beaver North (Group 1080), Brownfield North (Group 1022) and Pampa
North (Group 1023) for September 2025. Capacity impacts for Beaver North (Group
1025), Beaver C & Beaver North (Group 1080), Brownfield North (Group 1022),
Pampa North (Group 1023) and Beaver C System (Group 31) have been updated for
September 2025.



Allocation Group(s)/Point(s): Spraberry 12-inch (Group 601), Spraberry 16-inch (Group
1112) and Spraberry Station (Group 602)

Location: Northern's compressor station in Midland, Texas

Project Description: Station maintenance

Month: August 2025 through November 2025

Direction of Flow: 

 Delivery:
Spraberry 12-inch (Group 601) and Spraberry 16-inch (Group 1112) 


Receipt: Spraberry Station (Group 602)

Capacity Impact: Northern does not anticipate primary firm service will be
impacted for Spraberry 12-inch (Group 601). Primary firm service will not be
impacted for Spraberry Station (Group 602) and Spraberry 16-inch (Group 1112). 

Revision: Capacity impacts for Spraberry 12-inch (Group 601) and
Spraberry 16-inch (Group 1112) have been updated for August 2025. 



Please see Operationally
Available Capacity on Northern's website for current flow information and the Field
Area Group Allocation Maps andMarket
Area Group Allocation Maps for a
list of impacted points.



If you have any questions, contact your customer service or
marketing representative.