Northwest Notice 26-204

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 10/01/2026 7:55 AM MCT
Notice Eff D/T: 10/01/2026 7:55 AM MCT
Notice End D/T:
Reqrd Rsp Desc: No response required
Rsp D/T:

Notice ID: 26-204
Prior Notice:
Subject: Sumner Cyclone Filter Removal, Eugene ESD & I/O, Vernal Daggit Outage - Maint. R

Notice Text:

As posted in the maintenance schedule on Northwest Pipeline's 
website, Northwest will be performing maintenance at the 
following locations next week:

- Sumner Compressor: located at MP 1351.64 in Pierce 
        County, Washington beginning gas day October 05, 2026, 
        through gas day October 07, 2026.
- Eugene CS: located at MP 10.04 in Lane County, Oregon 
        beginning gas day October 05, 2026, through gas day 
        October 09, 2026.
- Vernal CS: located at MP 330.25 in Uintah County, Utah 
        beginning gas day October 08, 2026, through gas day 
        October 19, 2026.

The Sumner Compressor will be limited to 872,000 Dth/d 
southbound for the duration of the outage.

If primary nomination requests through the Sumner Compressor 
exceeds the available capacity of 872,000 Dth/d southbound (or 
whatever NWP cannot mitigate during any day of the 
maintenance), pursuant to Sections 10.2 and 10.3 of Rate 
Schedule TF-1 in Northwest's Tariff, Northwest will give notice 
of a Declared Deficiency Period based on a design capacity of 
1,033,000 Dth/d southbound. The deficiency period will continue 
until the work has been completed.

The Eugene CS will be limited to 41,000 Dth/d southbound for 
the duration of the outage.

If primary nomination requests through the Eugene CS exceeds 
the available capacity of 41,000 Dth/d southbound (or whatever 
NWP cannot mitigate during any day of the maintenance), 
pursuant to Sections 10.2 and 10.3 of Rate Schedule TF-1 in 
Northwest's Tariff, Northwest will give notice of a Declared 
Deficiency Period based on a design capacity of 49,000 Dth/d
southbound. The deficiency period will continue until the work 
has been completed.

The Vernal CS will be limited to net 0 Dth/d northbound and net 
0 Dth/d southbound for the duration of the outage.

If primary nomination requests through the Vernal CS exceeds 
the available capacity of net 0 Dth/d northbound or net 0 Dth/d 
southbound (or whatever NWP cannot mitigate during any day of 
the maintenance), pursuant to Sections 10.2 and 10.3 of Rate 
Schedule TF-1 in Northwest's Tariff, Northwest will give notice 
of a Declared Deficiency Period based on a design capacity of 
353,000 Dth/d northbound or 324,000 Dth/d southbound. The 
deficiency period will continue until the work has been 
completed.

Please reference the Maintenance Schedule tab at 
www.northwest.williams.com for more information.

If you have any questions, please call your Commercial Services 
Representative or the hotline at 713-215-6301.