Northwest Pipeline LLC
NOTICE #32193
Sumas B Plant Disconnect, Boise CS Generator Install/ESD, Mt. Vernon CS Solar In posted on Apr 18 2025  9:25AM

TSP Name:  Northwest Pipeline LLC     TSP:  67977322

Critical:  Y
Notice Stat Desc:  INITIATE
Notice Type Desc:  MAINTENANCE
Post D/T:  04/18/2025 9:20 AM MCT
Notice Eff D/T:  04/18/2025 9:20 AM MCT
Notice End D/T:  
Reqrd Rsp Desc:  No response required
Rsp D/T:  

Notice ID:  25-052
Prior Notice:  
Subject:  Sumas B Plant Disconnect, Boise CS Generator Install/ESD, Mt. Vernon CS Solar In

Notice Text:

<p>As posted in the maintenance schedule on Northwest Pipeline's&nbsp;<br />website, Northwest is performing maintenance at the following&nbsp;<br />locations:<br /><br />- Sumas CS beginning gas day April 21, 2025, through gas day&nbsp;<br />April 22, 2025.&nbsp;<br /><br />- Boise CS beginning gas day April 21, 2025, through gas day May&nbsp;<br />02, 2025.<br /><br />- Mt. Vernon CS on gas day April 22, 2025.<br /><br />- Pegram CS beginning on gas day April 22, 2025, through gas day&nbsp;<br />April 23, 2025.<br /><br />- Pocatello CS beginning gas day April 22, 2025, through gas day&nbsp;<br />April 23, 2025.&nbsp;<br /><br />The Sumas CS will be limited to 1,069,000 Dth/d southbound for&nbsp;<br />the duration of the outage.&nbsp;<br /><br />If primary nomination requests through the Sumas CS exceeds&nbsp;<br />the available capacity of 1,069,000 Dth/d southbound (or&nbsp;<br />whatever NWP cannot mitigate during any day of the&nbsp;<br />maintenance), pursuant to Sections 10.2 and 10.3 of Rate&nbsp;<br />Schedule TF-1 in Northwest's Tariff, Northwest will give notice&nbsp;<br />of a Declared Deficiency Period based on a design capacity of&nbsp;<br />1,409,000 Dth/d southbound. The deficiency period will continue&nbsp;<br />until the work is completed on gas day April 22, 2025.&nbsp;<br /><br />The Boise CS will be limited to 437,000 Dth/d northbound and&nbsp;<br />438,000 Dth/d southbound for the duration of the outage.&nbsp;<br /><br />If primary nomination requests through the Boise CS exceeds&nbsp;<br />the available capacity of 437,000 Dth/d northbound or 438,000&nbsp;<br />Dth/d southbound (or whatever NWP cannot mitigate during any&nbsp;<br />day of the maintenance), pursuant to Sections 10.2 and 10.3 of&nbsp;<br />Rate Schedule TF-1 in Northwest's Tariff, Northwest will give&nbsp;<br />notice of a Declared Deficiency Period based on a design&nbsp;<br />capacity of 499,000 Dth/d northbound or 452,000 Dth/d&nbsp;<br />southbound. The deficiency period will continue until the work&nbsp;<br />is completed on gas day May 02, 2025.&nbsp;<br /><br />The Mt. Vernon CS will be limited to 1,177,000 Dth/d southbound&nbsp;<br />for the duration of the outage.&nbsp;<br /><br />If primary nomination requests through the Mt. Vernon CS&nbsp;<br />exceeds the available capacity of 1,177,000 Dth/d southbound&nbsp;<br />(or whatever NWP cannot mitigate during any day of the&nbsp;<br />maintenance), pursuant to Sections 10.2 and 10.3 of Rate&nbsp;<br />Schedule TF-1 in Northwest's Tariff, Northwest will give notice&nbsp;<br />of a Declared Deficiency Period based on a design capacity of&nbsp;<br />1,277,000 Dth/d southbound. The deficiency period will continue&nbsp;<br />until the work is completed on gas day April 22, 2025.&nbsp;<br /><br />The Pegram CS will be limited to 602,000 Dth/d northbound for&nbsp;<br />the duration of the outage.&nbsp;<br /><br />If primary nomination requests through the Pegram CS exceeds&nbsp;<br />the available capacity of 602,000 Dth/d northbound (or whatever&nbsp;<br />NWP cannot mitigate during any day of the maintenance),&nbsp;<br />pursuant to Sections 10.2 and 10.3 of Rate Schedule TF-1 in&nbsp;<br />Northwest's Tariff, Northwest will give notice of a Declared&nbsp;<br />Deficiency Period based on a design capacity of 654,000 Dth/d&nbsp;<br />northbound. The deficiency period will continue until the work&nbsp;<br />is completed on gas day April 23, 2025.<br /><br />The Pocatello CS will be limited to 499,000 Dth/d northbound&nbsp;<br />for the duration of the outage.&nbsp;<br /><br />If primary nomination requests through the Pocatello CS exceeds&nbsp;<br />the available capacity of 499,000 Dth/d northbound (or whatever&nbsp;<br />NWP cannot mitigate during any day of the maintenance),&nbsp;<br />pursuant to Sections 10.2 and 10.3 of Rate Schedule TF-1 in&nbsp;<br />Northwest's Tariff, Northwest will give notice of a Declared&nbsp;<br />Deficiency Period based on a design capacity of 610,000 Dth/d&nbsp;<br />northbound. The deficiency period will continue until the work&nbsp;<br />is completed on gas day April 23, 2025<br /><br /><br />Please reference the Maintenance Schedule tab at&nbsp;<br />www.northwest.williams.com for more information.<br /><br /><br />If you have any questions, please call your Commercial Services&nbsp;<br />Representative or the hotline at 713-215-6301.<br /></p>