Increased Available Capacity – Caldwell CS

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: MAINTENANCE
Post D/T: 09/25/2025 8:53 AM MCT
Notice Eff D/T: 09/25/2025 8:53 AM MCT
Notice End D/T:
Reqrd Rsp Desc: No response required
Rsp D/T:

Notice ID: 25-164
Prior Notice: 25-162
Subject: Increased Available Capacity – Caldwell CS

Notice Text:

Due to pipeline conditions, Northwest Pipeline is increasing
the available southbound capacity through the Caldwell
Compressor Station during the scheduled maintenance ending Gas
Day October 27, 2025.

Effective Gas Day 26, the Caldwell CS will be limited to
409,000 Dth/d southbound for the duration of the outage.

If primary nomination requests through the Caldwell CS exceeds 
the available capacity of 409,000 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 475,000 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.