Northwest Notice 25-075

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: MAINTENANCE
Post D/T: 05/29/2025 7:27 AM MCT
Notice Eff D/T: 05/29/2025 7:27 AM MCT
Notice End D/T:
Reqrd Rsp Desc: No response required
Rsp D/T:

Notice ID: 25-075
Prior Notice: 25-071
Subject: Chehalis Update and Request to Vacate SGS-2I at JP

Notice Text:

Due to additional work identified during ongoing repairs, the 
current anticipated return to service date of the Chehalis 
compressor station unit is now July 3, 2025. The current 
available capacity remains at 600,000 Dth/day southbound. 

Northwest apologizes for this inconvenience and will work 
diligently to complete all the work as quickly and safely as 
possible to minimize impacts. Any changes or updates to the 
schedule will be promptly communicated via the Northwest 
Pipeline Portal.  

Northwest will continue to mitigate Operational Flow Orders 
(OFO) and deficiency impacts at Chehalis compressor station on 
an operationally available basis, as referenced in Notice ID’s 
25-071, 25-070, and 25-069.

With the ongoing work at our Chehalis compressor station and 
current storage levels at Jackson Prairie (JP), operational 
flexibility on the pipeline is currently limited. Northwest is  
requesting that customers stay on rate and avoid banking gas on 
the system to help maintain system balance and ensure continued 
reliable service for all customers.

Additionally, all SGS-2I Shippers with existing Working Gas 
Inventory are requested to eliminate their balance by the end 
of Gas Day June 30, 2025. If operational circumstances require 
a change to that date, Northwest will issue an additional 
posting in accordance with Section 2.3 of the SGS-2I Rate 
Schedule.

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


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

Due to additional work identified during ongoing repairs, the 
current anticipated return to service date of the Chehalis 
compressor station unit is now July 3, 2025. The current 
available capacity remains at 600,000 Dth/day southbound. 

Northwest apologizes for this inconvenience and will work 
diligently to complete all the work as quickly and safely as 
possible to minimize impacts. Any changes or updates to the 
schedule will be promptly communicated via the Northwest 
Pipeline Portal.  

Northwest will continue to mitigate Operational Flow Orders 
(OFO) and deficiency impacts at Chehalis compressor station on 
an operationally available basis, as referenced in Notice ID’s 
25-071, 25-070, and 25-069.

With the ongoing work at our Chehalis compressor station and 
current storage levels at Jackson Prairie (JP), operational 
flexibility on the pipeline is currently limited. Northwest is  
requesting that customers stay on rate and avoid banking gas on 
the system to help maintain system balance and ensure continued 
reliable service for all customers.

Additionally, all SGS-2I Shippers with existing Working Gas 
Inventory are requested to eliminate their balance by the end 
of Gas Day June 30, 2025. If operational circumstances require 
a change to that date, Northwest will issue an additional 
posting in accordance with Section 2.3 of the SGS-2I Rate 
Schedule.

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


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