TSP Name: Northwest Pipeline LLC TSP: 67977322
Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: MAINTENANCE
Post D/T: 08/12/2025 8:28 AM MCT
Notice Eff D/T: 08/11/2025 8:28 AM MCT
Notice End D/T:
Reqrd Rsp Desc: No response required
Rsp D/T:
Notice ID: 25-116
Prior Notice: 25-112
Subject: Update - Chehalis Outage ISD
Notice Text:
As referenced in Notice ID# 25-112, Northwest is experiencing
additional unplanned maintenance at the Chehalis Compressor
Station. The current available capacity is 600,000 Dth/day
southbound. The in-service date is now expected to be gas day
August 22, 2025.
Northwest apologizes for the prolonged disruption at the
Chehalis Compressor Station. Although the previously completed
work was done successfully and safely, it is not unexpected to
experience some residual attention and recalibration in
adjacent areas as Unit 1 exercises high amounts of run time.
Northwest’s operational and commercial priority is to bring
Chehalis back to full and consistent throughputs for an
uninterrupted remainder of the year.
Northwest will continue to mitigate Operational Flow Orders
(OFO) and deficiency impacts at the Chehalis compressor station
on an operationally available basis, as referenced in Notice ID
25-112. Any changes or updates to the schedule will be promptly
communicated via the Northwest Pipeline Portal.
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.
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