Sumas Compressor Station Deficiency Period

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: CURTAILMENT
Post D/T: 08/31/2026 3:15 PM MCT
Notice Eff D/T: 08/31/2026 3:15 PM MCT
Notice End D/T:
Reqrd Rsp Desc: No response required
Rsp D/T:

Notice ID: 26-167
Prior Notice: 26-156
Subject: Sumas Compressor Station Deficiency Period

Notice Text:

As indicated in All Shippers Notice #26-156, Northwest is

currently performing maintenance at the Sumas CS through

September 01, 2026.  

 

Primary southbound nomination requests at the Sumas CS have

exceeded the available capacity of 968,000 Dth/d southbound (or

whatever Northwest cannot mitigate). Therefore, pursuant to

Sections 10.2 and 10.3 of Rate Schedule TF-1 in Northwest's

Tariff, Northwest hereby gives notice of a Deficiency Period

for Gas Day September 01, 2026. The Deficiency will be

calculated based on a design capacity of 1,409,000 Dth/d

southbound. The Deficiency Period will continue until the work

is completed. Northwest will post on its EBB if unable to

mitigate volumes each day until the work is completed.

 

As a reminder, the Sumas Meter Upgrade Part 2 referenced in All

Shippers Notice #26-162 will further limit the available

capacity to 821,000 Dth/d southbound beginning Gas Day

September 02, 2026, through Gas Day September 09, 2026.

 

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.