Northwest Pipeline

Pipeline: Northwest Pipeline
Notice: Caldwell CS – Unplanned Maintenance
Notice ID: 32759

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Northwest Pipeline LLC

NOTICE # 26-046

Caldwell CS – Unplanned Maintenance

 posted on
 
Apr 13 2026 8:49AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 04/13/2026 8:45 AM MCT
Notice Eff D/T: 04/13/2026 8:45 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-046
Prior Notice: 
Subject: Caldwell CS – Unplanned Maintenance

Notice Text:

Northwest is experiencing unplanned maintenance at Caldwell 
Unit 4, located at MP 849.8 in Gem County, Idaho. Initial 
assessments indicate this is expected to result in an extended 
outage, with an estimated duration of 60 to 90 days to 
complete the required repairs.
Northwest is doing everything possible to complete the work as 
quickly and safely as possible to bring in this timeline. We 
will provide updates on our EBB as additional information 
becomes available. 
Effective Gas Day Tuesday, April 14, 2026, the available 
capacity at the Caldwell Compressor Station will be limited to 
438,000 Dth/d northbound and 439,000 Dth/d southbound. 
If primary nomination requests through the Caldwell CS exceeds 
the available capacity of 438,000 Dth/d northbound or 439,000 
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 452,000 Dth/d northbound or 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.

Pipeline: Northwest Pipeline
Notice: Unplanned maintenance at Jackston Prairie and declared Entitlement
Notice ID: 32689

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Northwest Pipeline LLC

NOTICE # 26-038

Unplanned maintenance at Jackston Prairie and declared Entitlement

 posted on
 
Mar 12 2026 8:59AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 03/12/2026 8:54 AM MCT
Notice Eff D/T: 03/12/2026 8:54 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-038
Prior Notice: 
Subject: Unplanned maintenance at Jackston Prairie and declared Entitlement

Notice Text:

 
Puget Sound Energy (PSE), operator of Jackson Prairie (JP)
storage facility, has notified Northwest of a malfunctioning
component at JP Storage currently preventing injection
capability. PSE is actively working to source the part and
safely bring the facility back to full operational capacity.
Northwest will accept injection nominations at JP only to the
extent such injections can be netted against corresponding
withdrawal nominations.
 
Because system flexibility will be limited, Northwest is
declaring a Stage II (8%) Underrun Entitlement for all
receiving Parties north of the Kemmerer compressor station
beginning Gas Day Saturday, March 14, 2026. 
 
Please remain diligent in managing supply and demand and avoid
banking the system. On system balancing on Northwest’s
Electronic Bulletin Board is currently designated as “No” for
all areas.
 
Northwest would like to thank the customers in advance for
their cooperation. We will provide further updates as more
information becomes available.
  
 
 
 
If you have any questions, please contact your Commercial
Services representative or the Hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Meacham Notice of Recall and OFO
Notice ID: 32657

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Northwest Pipeline LLC

NOTICE # 26-026

Meacham Notice of Recall and OFO

 posted on
 
Feb 17 2026 3:46PM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: OPERATIONAL FLOW ORDER
Post D/T: 02/17/2026 3:46 PM MCT
Notice Eff D/T: 02/17/2026 3:46 PM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-026
Prior Notice: 
Subject: Meacham Notice of Recall and OFO

Notice Text:

Effective Gas Day Thursday, February 19, 2026 and until further 
notice, Northwest is issuing an OFO Recall Advisory and 
Operational Flow Order (OFO) through the Meacham compressor 
pursuant to Section 14.15(d) of its Tariff. 
Under the OFO Recall Advisory, Shippers are required to: (1) 
recall capacity that is subject to an OFO recall provision; or 
(2) take other action that is acceptable to Northwest, to 
satisfy its OFO obligation.
If the southbound scheduled quantities exceed the greater of 
Northwest’s design capacity of 500,000 Dth/d at Meacham or the 
operationally available capacity at that location on that day, 
Northwest will provide Shippers with their specific OFO 
obligations by 4:00 p.m. MST. Shippers must comply with their 
OFO obligations no later than the Evening nomination deadline 
(5:00 p.m. MST).
Shippers can monitor throughput quantities and obtain a copy of 
Northwest’s OFO procedures on Northwest’s website at 
www.northwest.williams.com.  
If you have any questions, please contact your Commercial 
Services Representative or the hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Chehalis - Unplanned Maintenance, Notice of Recall and OFO, Potential Deficiency
Notice ID: 32647

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NOTICE # 26-019

Chehalis - Unplanned Maintenance, Notice of Recall and OFO, Potential Deficiency

 posted on
 
Feb 5 2026 2:03PM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 02/05/2026 1:56 PM MCT
Notice Eff D/T: 02/05/2026 1:56 PM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-019
Prior Notice: 
Subject: Chehalis - Unplanned Maintenance, Notice of Recall and OFO, Potential Deficiency

Notice Text:

Northwest is experiencing unplanned maintenance at Chehalis 
Unit 2 located at MP 1289.38 in Lewis County, Washington. New 
replacement parts have been ordered and are in route to 
complete the repairs as quickly as possible. To maintain the 
integrity of the pipeline, the available southbound capacity 
will be restricted beginning gas day Saturday, February 07, 
2026, with the anticipated return to service on gas day 
Tuesday, February 10, 2026. 
Effective gas day Saturday, February 07, 2026, the available 
capacity at the Chehalis Compressor Station will be limited to 
500,000 Dth/day southbound. 
Additionally, effective gas day Saturday, February 07, 2026, 
and until further notice, Northwest is issuing an OFO Recall 
Advisory and Operational Flow Order (OFO) southbound through 
the Chehalis compressor pursuant to Section 14.15(d) of its 
Tariff. 
Under the OFO Recall Advisory, Shippers are required to: (1) 
recall capacity that is subject to an OFO recall provision; or 
(2) take other action that is acceptable to Northwest, to 
satisfy its OFO obligation.
If the southbound scheduled quantities exceed Northwest’s 
design capacity of 672,000 Dth/d at Chehalis, Northwest will 
provide Shippers with their specific OFO obligations by 4:00 
p.m. MST. Shippers must comply with their OFO obligations no 
later than the Evening nomination deadline (5:00 p.m. MST).
If an OFO is necessary for a given Gas Day, Northwest will wait 
until the Evening scheduling process to provide notice of a 
Declared Deficiency period and will make deficiency cuts to 
bring the nomination requests at the Chehalis compressor from 
the design capacity of 672,000 Dth/d to the operationally 
available capacity of 500,000 Dth/d. If an OFO is not 
necessary, but a deficiency period is, Northwest will provide 
notice of a Declared Deficiency period and will make deficiency 
cuts in the Timely scheduling process to bring the nomination 
requests at the Chehalis compressor to the operationally 
available capacity of 500,000 Dth/d (or whatever NWP cannot 
mitigate during any day of the unplanned maintenance period), 
all pursuant to Sections 10.2 and 10.3 of Rate Schedule TF-1 in 
Northwest's Tariff. The deficiency period will continue until 
the work is 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.

Pipeline: Northwest Pipeline
Notice: Meacham Notice of Recall and OFO
Notice ID: 32882

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Northwest Pipeline LLC

NOTICE # 26-121

Meacham Notice of Recall and OFO

 posted on
 
Jun 15 2026 7:41AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: OPERATIONAL FLOW ORDER
Post D/T: 06/15/2026 7:38 AM MCT
Notice Eff D/T: 06/15/2026 7:38 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-121
Prior Notice: 
Subject: Meacham Notice of Recall and OFO

Notice Text:

Effective Gas Day Tuesday, June 16, 2026, and until further 
notice, Northwest is issuing an OFO Recall Advisory and 
Operational Flow Order (OFO) through the Meacham compressor 
pursuant to Section 14.15(d) of its Tariff. 
Under the OFO Recall Advisory, Shippers are required to: (1) 
recall capacity that is subject to an OFO recall provision; or 
(2) take other action that is acceptable to Northwest, to 
satisfy its OFO obligation.
If the southbound scheduled quantities exceed the greater of 
Northwest’s design capacity of 500,000 Dth/d at Meacham or the 
operationally available capacity at that location on that day, 
Northwest will provide Shippers with their specific OFO 
obligations by 4:00 p.m. MST. Shippers must comply with their 
OFO obligations no later than the Evening nomination deadline 
(5:00 p.m. MST).
Shippers can monitor throughput quantities and obtain a copy of 
Northwest’s OFO procedures on Northwest’s website at 
www.northwest.williams.com.  
If you have any questions, please contact your Commercial 
Services Representative or the hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: SGS-2I Injections Restricted at JP
Notice ID: 32852

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NOTICE # 26-115

SGS-2I Injections Restricted at JP

 posted on
 
May 26 2026 7:32AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: STORAGE
Post D/T: 05/26/2026 7:25 AM MCT
Notice Eff D/T: 05/26/2026 7:25 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-115
Prior Notice: 
Subject: SGS-2I Injections Restricted at JP

Notice Text:

Effective Gas Day May 27, 2026, Northwest will no longer accept 
SGS-2I injections into the Jackson Prairie (JP) storage 
facility. Additionally, Northwest is requesting SGS-2I storage 
holders with existing balances to begin reducing inventory 
levels. Northwest will provide official notice to vacate, 
pursuant to Section 2.3 of the SGS-2I Rate Schedule, when the 
total JP inventory approaches 23 Bcf or operating conditions 
require such utilized capacity to meet firm obligations or 
system balancing requirements.
As a reminder, SGS-2I customers can track JP inventory levels 
on Northwest’s Electronic Bulletin Board.
Please contact your Commercial Services Representative or the 
hotline at 713-215-6301 if you have any questions.

Pipeline: Northwest Pipeline
Notice: Jackson Prairie Maintenance complete and Entitlement Lifted
Notice ID: 32690

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Northwest Pipeline LLC

NOTICE # 26-039

Jackson Prairie Maintenance complete and Entitlement Lifted

 posted on
 
Mar 14 2026 5:03PM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: MAINTENANCE
Post D/T: 03/14/2026 5:03 PM MCT
Notice Eff D/T: 03/14/2026 5:03 PM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-039
Prior Notice: 26-038
Subject: Jackson Prairie Maintenance complete and Entitlement Lifted

Notice Text:

Puget Sound Energy (PSE), operator of the Jackson Prairie (JP)
storage facility, has notified Northwest that the maintenance to repair 
a malfunctioning component has been completed. 
Normal withdrawal and injection nominations can commence. 
 
Because of the increased flexibility with the full return of JP, Northwest is
lifting the Stage II (8%) Underrun Entitlement for all
receiving Parties north of the Kemmerer compressor station effective immediately.
 
Please remain diligent in managing supply and demand. 
 
If you have any questions, please contact your Commercial
Services representative or the Hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Meacham OFO Lifted
Notice ID: 32672

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NOTICE # 26-030

Meacham OFO Lifted

 posted on
 
Mar 1 2026 1:34PM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: OPERATIONAL FLOW ORDER
Post D/T: 03/01/2026 1:34 PM MCT
Notice Eff D/T: 03/01/2026 1:34 PM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-030
Prior Notice: 26-026
Subject: Meacham OFO Lifted

Notice Text:

Effective Gas Day March 1, 2026, the Recall Advisory 
and Operational Flow Order at the Meacham compressor 
(Notice 26-026) will be lifted.
 
If you have any questions, please contact your Commercial 
Services Representative or the Hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Meacham OFO Lifted
Notice ID: 32655

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 Entire Tariff
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NOTICE # 26-024

Meacham OFO Lifted

 posted on
 
Feb 16 2026 9:07AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: OPERATIONAL FLOW ORDER
Post D/T: 02/16/2026 9:07 AM MCT
Notice Eff D/T: 02/16/2026 9:07 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-024
Prior Notice: 26-002
Subject: Meacham OFO Lifted

Notice Text:

Effective Gas Day February 16, 2026, the Recall Advisory and 
Operational Flow Order at the Meacham compressor (Notice 26-
0002) will be lifted.
If you have any questions, please contact your Commercial 
Services Representative or the Hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Chehalis Unplanned Maintenance Complete, Chehalis OFO Lifted, and Deficiency Per
Notice ID: 32651

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NOTICE # 26-021

Chehalis Unplanned Maintenance Complete, Chehalis OFO Lifted, and Deficiency Per

 posted on
 
Feb 9 2026 8:03AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: MAINTENANCE
Post D/T: 02/09/2026 7:51 AM MCT
Notice Eff D/T: 02/09/2026 7:51 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-021
Prior Notice: 26-020
Subject: Chehalis Unplanned Maintenance Complete, Chehalis OFO Lifted, and Deficiency Per

Notice Text:

Northwest is pleased to inform customers that repairs on
Chehalis Unit 2, as referenced in Notice #26-019, will be
complete today. Effective Gas Day 10 the Recall Advisory and
Operational Flow Order at the Chehalis CS will be lifted. 
Northwest will accept nominations up to 800,000 Dth/d
southbound through Chehalis CS starting Timely cycle on Gas
Day February 10, 2026. This will also end the current
Deficiency Period.
If you have any questions, please contact your Commercial 
Services Representative or the hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Chehalis Compressor Station Deficiency Period
Notice ID: 32648

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NOTICE # 26-020

Chehalis Compressor Station Deficiency Period

 posted on
 
Feb 6 2026 3:37PM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 02/06/2026 3:33 PM MCT
Notice Eff D/T: 02/06/2026 3:33 PM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-020
Prior Notice: 
Subject: Chehalis Compressor Station Deficiency Period

Notice Text:

As indicated in All Shippers Notice #26-019, Northwest is 
currently experiencing unplanned maintenance at the Chehalis 
compressor station. 
Primary southbound nomination requests at the Chehalis 
compressor have exceeded the available capacity of 500,000 
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 February 07, 2026. The Deficiency 
will be calculated based on a design capacity of 672,000 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.
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.

Pipeline: Northwest Pipeline
Notice: Stage III (13%) Overrun Entitlement Lifted
Notice ID: 32630

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NOTICE # 26-013

Stage III (13%) Overrun Entitlement Lifted

 posted on
 
Jan 26 2026 10:07AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: PIPELINE CONDITIONS
Post D/T: 01/26/2026 10:04 AM MCT
Notice Eff D/T: 01/26/2026 10:04 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-013
Prior Notice: 26-007
Subject: Stage III (13%) Overrun Entitlement Lifted

Notice Text:

Effective Gas Day January 28, 2026, Northwest is lifting the 
Stage III (13%) Overrun Entitlement for all Receiving Parties 
north of the Kemmerer compressor station that was originally 
issued in All Shipper’s Notice 26-007.
Northwest requests that shippers continue to be diligent in 
managing their supply and demand needs.
If you have any questions, please call your Commercial Services 
Representative or the hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Albany ESD, Washougal Valve Repl, & Baker ESD - Maintenance Reminder
Notice ID: 32937

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NOTICE # 26-139

Albany ESD, Washougal Valve Repl, & Baker ESD - Maintenance Reminder

 posted on
 
Jul 23 2026 8:33AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 07/23/2026 8:32 AM MCT
Notice Eff D/T: 07/23/2026 8:32 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-139
Prior Notice: 
Subject: Albany ESD, Washougal Valve Repl, & Baker ESD - Maintenance Reminder

Notice Text:

As posted in the maintenance schedule on Northwest Pipeline's 
website, Northwest will be performing maintenance at the 
following locations next week:
-
 
Albany CS: located at MP 83.46 in Linn County, Oregon 
        beginning gas day July 27, 2026, through gas day 
        July 31, 2026.
-
 
Washougal North Constraint: located at MP 1216.22 in 
        Clark County, Washington beginning gas day July 27, 2026, 
        through gas day August 01, 2026.
-
 
Baker CS: located at MP 948.95 in Baker County, Oregon 
        beginning gas day July 28, 2026, through gas day July 
        30, 2026.
The Albany CS will be limited to 116,000 Dth/d southbound for 
the duration of the outage.
If primary nomination requests through the Albany CS exceeds 
the available capacity of 116,000 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 120,000 Dth/d 
southbound. The deficiency period will continue until the work 
has been completed.
The Washougal North Constraint will be limited to net 0 Dth/d 
northbound and net 0 Dth/d southbound for the duration of the 
outage. 
Please note, the Grants Pass Lateral will have to be 
completely supplied with gas coming from the Gorge during 
this 
outage.
If primary nomination requests through the Washougal North 
Constraint exceeds the available capacity of net 0 Dth/d 
northbound or net 0 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 305,000 Dth/d northbound 
or 521,000 Dth/d southbound. The deficiency period will 
continue until the work has been completed. 
The Baker CS will be limited to 357,000 Dth/d northbound and 
463,000 Dth/d southbound for the duration of the outage.
If primary nomination requests through the Baker CS exceeds the 
available capacity of 357,000 Dth/d northbound or 463,000 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 
446,000 Dth/d northbound or 491,000 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.

Pipeline: Northwest Pipeline
Notice: Meacham OFO Lifted
Notice ID: 32935

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NOTICE # 26-138

Meacham OFO Lifted

 posted on
 
Jul 20 2026 9:19AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: OPERATIONAL FLOW ORDER
Post D/T: 07/20/2026 9:17 AM MCT
Notice Eff D/T: 07/20/2026 9:17 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-138
Prior Notice: 26-121
Subject: Meacham OFO Lifted

Notice Text:

Effective Gas Day July 21, 2026, the Recall Advisory 
and Operational Flow Order at the Meacham compressor 
station (Notice 26-121) will be lifted.
If you have any questions, please contact your Commercial 
Services Representative or the Hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Notice to Vacate SGS-2I Inventory at JP
Notice ID: 32883

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NOTICE # 26-122

Notice to Vacate SGS-2I Inventory at JP

 posted on
 
Jun 15 2026 8:46AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: STORAGE
Post D/T: 06/15/2026 8:44 AM MCT
Notice Eff D/T: 06/15/2026 8:44 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-122
Prior Notice: 26-115
Subject: Notice to Vacate SGS-2I Inventory at JP

Notice Text:

The total Jackson Prairie (JP) inventory has reached 23 Bcf. To 
make working gas storage space available for firm storage 
holders at JP, Northwest is requiring all SGS-2I Shippers with 
existing Working Gas Inventory to eliminate their balance by 
the end of Gas Day June 30, 2026. 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.
Pursuant to Section 2.3 of the SGS-2I Rate Schedule, if a 
Shipper fails to reduce its Working Gas Inventory to the level 
specified above, then Northwest shall take title to Shipper’s 
Working Gas Inventory that exceeds the Working Gas Inventory 
level specified above.
Please contact your Commercial Services Representative or the 
Northwest Pipeline Hotline at 713-215-6301 if you have any 
questions.

Pipeline: Northwest Pipeline
Notice: La Plata B to Pleasant View Pig Run Impact
Notice ID: 32849

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NOTICE # 26-113

La Plata B to Pleasant View Pig Run Impact

 posted on
 
May 19 2026 11:39AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 05/19/2026 11:36 AM MCT
Notice Eff D/T: 05/19/2026 11:36 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-113
Prior Notice: 
Subject: La Plata B to Pleasant View Pig Run Impact

Notice Text:

As posted in the maintenance schedule on Northwest Pipeline's 
website, Northwest is currently performing pig runs through the 
La Plata B to Pleasant View corridor with the last run
scheduled to be completed on gas day May 21, 2026. Northwest
was not anticipating any impacts to customers, however, due to
current pipeline conditions the available northbound capacity
through the La Plata B CS will need to be limited to maintain
the integrity of the pig run.
Effective for gas day May 21, 2026, the La Plata B CS (located
in La Plata County, Colorado at MP 0.1) will be limited to
100,000 dth/d northbound.
If primary nomination requests through the La Plata B CS 
exceeds the available capacity of 100,000 Dth/d northbound (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 
283,000 Dth/d northbound. 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.

Pipeline: Northwest Pipeline
Notice: Pegram ESD & Pocatello M&ERP Tie-in ML - Maintenance Reminder
Notice ID: 32934

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NOTICE # 26-137

Pegram ESD & Pocatello M&ERP Tie-in ML - Maintenance Reminder

 posted on
 
Jul 16 2026 2:12PM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 07/16/2026 2:10 PM MCT
Notice Eff D/T: 07/16/2026 2:10 PM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-137
Prior Notice: 
Subject: Pegram ESD & Pocatello M&ERP Tie-in ML - Maintenance Reminder

Notice Text:

As posted in the maintenance schedule on Northwest Pipeline's 
website, Northwest will be performing maintenance at the 
following locations next week:
-
 
Pegram CS: located at MP 495.54 in Bear Lake County, 
        Idaho beginning gas day July 20, 2026, through gas day 
        July 24, 2026.
-
 
Pocatello CS: located at MP 607.28 in Power County, Idaho 
        beginning gas day July 24, 2026, through gas day August 
        15, 2026.
The Pegram CS will be limited to 602,000 Dth/d northbound for 
the duration of the outage.
If primary nomination requests through the Pegram CS exceeds 
the available capacity of 602,000 Dth/d northbound (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 654,000 Dth/d 
northbound. The deficiency period will continue until the work 
has been completed.
The Pocatello CS will be limited to 398,000 Dth/d northbound 
for the duration of the outage.
If primary nomination requests through the Pocatello CS exceeds 
the available capacity of 398,000 Dth/d northbound (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 610,000 Dth/d 
northbound. 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.

Pipeline: Northwest Pipeline
Notice: Underrun Entitlement Warning Lifted
Notice ID: 32754

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NOTICE # 26-043

Underrun Entitlement Warning Lifted

 posted on
 
Apr 6 2026 11:31AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: PIPELINE CONDITIONS
Post D/T: 04/06/2026 11:31 AM MCT
Notice Eff D/T: 04/06/2026 11:31 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-043
Prior Notice: 26-041
Subject: Underrun Entitlement Warning Lifted

Notice Text:

Effective immediately, Northwest is lifting the Underrun 
Entitlement Warning that was originally issued in All Shipper’s 
Notice 26-041.
Northwest requests that shippers continue to be diligent in 
managing their supply and demand needs.
If you have any questions, please call your Commercial Services 
Representative or the hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Stage III (13%) Overrun Entitlement
Notice ID: 32622

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NOTICE # 26-007

Stage III (13%) Overrun Entitlement

 posted on
 
Jan 21 2026 3:24PM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: PIPELINE CONDITIONS
Post D/T: 01/21/2026 3:24 PM MCT
Notice Eff D/T: 01/21/2026 3:24 PM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-007
Prior Notice: 
Subject: Stage III (13%) Overrun Entitlement

Notice Text:

Due to forecasted cooler weather across the nation, Northwest is 
requesting customers to secure adequate supply to meet demand and 
avoid drafting the system. Northwest is declaring a Stage III 
(13%) Overrun Entitlement for all Receiving Parties north of the 
Kemmerer compressor station effective Gas Day Friday, January 23, 
2026. This entitlement includes all points on the Spokane, 
Wenatchee and Grants Pass laterals, and shall continue until 
further notice.
If you have any questions, please contact your Commercial 
Services Representative or the hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Roosevelt ESD - Maintenance Reminder
Notice ID: 32956

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Northwest Pipeline LLC

NOTICE # 26-146

Roosevelt ESD - Maintenance Reminder

 posted on
 
Aug 6 2026 8:26AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 08/06/2026 8:22 AM MCT
Notice Eff D/T: 08/06/2026 8:22 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-146
Prior Notice: 
Subject: Roosevelt ESD - Maintenance Reminder

Notice Text:

As posted in the maintenance schedule on Northwest Pipeline's 
website, Northwest will be performing maintenance at the 
following location next week:
-
 
Roosevelt CS: located at MP 1097.6 in Klickitat County, 
        Washington beginning gas day August 10, 2026, through gas 
        day August 14, 2026.
The Roosevelt CS will be limited to 383,000 Dth/d northbound 
and 350,000 Dth/d southbound for the duration of the outage.
If primary nomination requests through the Roosevelt CS exceeds 
the available capacity of 383,000 Dth/d northbound or 350,000 
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 546,000 Dth/d northbound or 414,000 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.

Pipeline: Northwest Pipeline
Notice: Underrun Entitlement Warning Lifted
Notice ID: 32951

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Northwest Pipeline LLC

NOTICE # 26-143

Underrun Entitlement Warning Lifted

 posted on
 
Jul 31 2026 11:46AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: SUPERSEDE
Notice Type Desc: PIPELINE CONDITIONS
Post D/T: 07/31/2026 11:28 AM MCT
Notice Eff D/T: 07/31/2026 11:28 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-143
Prior Notice: 26-131
Subject: Underrun Entitlement Warning Lifted

Notice Text:

Effective Gas Day 08/02/2026, Northwest is lifting the Underrun 
Entitlement Warning that was originally issued in All Shipper’s 
Notice 26-131.
Northwest requests that shippers continue to be diligent in 
managing their supply and demand needs.
If you have any questions, please call your Commercial Services 
Representative or the hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Underrun Entitlement Warning
Notice ID: 32908

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Northwest Pipeline LLC

NOTICE # 26-131

Underrun Entitlement Warning

 posted on
 
Jun 29 2026 10:07AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: PIPELINE CONDITIONS
Post D/T: 06/29/2026 10:03 AM MCT
Notice Eff D/T: 06/29/2026 10:03 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-131
Prior Notice: 
Subject: Underrun Entitlement Warning

Notice Text:

Northwest has limited balancing flexibility with Jackson Prairie
filling as expected. Additionally, on the south end of the system,
Northwest is also subject to injection allocation at the Clay
Basin facility. These factors severely limit Northwest’s ability
to absorb banked gas on the system. Northwest is issuing an
Underrun Entitlement Warning effective Gas Day June 30, 2026, and
urge shippers to balance their supply and demand needs.
As a reminder and pursuant to Section 14(c) of its Tariff, 
customer-specific entitlements may be issued to Receiving 
Parties that:
1)
 
have contributed to the adverse operating conditions for 
at least two consecutive days; and 
2)
 
whose actual measured deliveries have deviated from 
scheduled deliveries for the previous Gas Day by the greater of 
10,000 Dth or 5 percent.
If you have any questions, please call your Commercial Services 
Representative or the hotline at 713-215-6301.

Pipeline: Northwest Pipeline
Notice: Buhl M&ERP and Lava Hot Springs Solar Inspections - Maintenance Reminder
Notice ID: 32879

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Northwest Pipeline LLC

NOTICE # 26-119

Buhl M&ERP and Lava Hot Springs Solar Inspections - Maintenance Reminder

 posted on
 
Jun 4 2026 3:40PM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 06/04/2026 3:31 PM MCT
Notice Eff D/T: 06/04/2026 3:31 PM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-119
Prior Notice: 
Subject: Buhl M&ERP and Lava Hot Springs Solar Inspections - Maintenance Reminder

Notice Text:

As posted in the maintenance schedule on Northwest Pipeline's 
website, Northwest will be performing maintenance at the 
following locations next week:
-
 
Buhl CS: located at MP 729.8 in Twin Falls County, 
        Idaho beginning gas day June 08, 2026, through gas day 
        October 31, 2026.
-
 
Lava Hot Springs CS: located at MP 567.42 in Bannock 
        County, Idaho beginning gas day June 09, 2026, through 
        gas day June 11, 2026.
The Buhl CS will be limited to 499,000 Dth/d northbound for 
the duration of the outage.
If primary nomination requests through the Buhl CS exceeds the 
available capacity of 499,000 Dth/d northbound (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 578,000 Dth/d northbound. 
The deficiency period will continue until the work has been 
completed.
The Lava Hot Springs CS will be limited to 582,000 Dth/d 
northbound and for the duration of the outage.
If primary nomination requests through the Lava Hot Springs CS 
exceeds the available capacity of 582,000 Dth/d northbound (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 
650,000 Dth/d northbound. 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.

Pipeline: Northwest Pipeline
Notice: Jackson Prairie Maintenance Reminder
Notice ID: 32930

Capacity

Operationally Available
Unsubscribed

Gas Quality

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 Gas Quality Resolution Report
RNG Operating Policy

Index of Customers

Locations

Notices

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Request to Purchase Releasable Capacity
Waste Heat

Posted Imbalances

Regulatory

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Affiliate Names & Addresses
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Tariff

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Preliminary Statement
Map
Currently Effective Rates
Rate Schedules
General Terms and Conditions
Form Of Service Agreement
 Entire Tariff
Sheet/Section Index

Transactional Reporting

Capacity Release
Firm
Interruptible

Capacity Release Indices

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Maintenance Schedule

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Northwest Pipeline LLC Notice Detail

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Northwest Pipeline LLC

NOTICE # 26-136

Jackson Prairie Maintenance Reminder

 posted on
 
Jul 10 2026 10:17AM

TSP Name: Northwest Pipeline LLC TSP: 67977322

Critical: Y
Notice Stat Desc: INITIATE
Notice Type Desc: MAINTENANCE
Post D/T: 07/10/2026 10:13 AM MCT
Notice Eff D/T: 07/10/2026 10:13 AM MCT
Notice End D/T: 
Reqrd Rsp Desc: No response required
Rsp D/T: 

Notice ID: 26-136
Prior Notice: 
Subject: Jackson Prairie Maintenance Reminder

Notice Text:

Puget Sound Energy, operator of Jackson Prairie (JP) storage 
facility, has notified Northwest that maintenance will be 
performed at JP beginning Gas Day July 14, 2026, through Gas 
Day July 22, 2026.
The facility will be shut-in and neither withdrawals nor 
injections will be available during this period.
Due to Northwest’s limited balance flexibility during this 
time, please stay on rate and avoid drafting or banking the 
system during this outage. For those with the need for
system balancing, Northwest will work with you to adjust those 
balances prior to or after the JP outage. 
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.