Updated Jul 22, 2025

The following maintenance work is scheduled on Northwest Pipeline through the end of the current calendar year. Potential system impacts are identified below. Capacity impacts and scheduled maintenance date estimates are stated as accurately as possible, but are subject to change based on the variable nature of the many factors involved in the projects. Any variance from this notice will be communicated to customers as quickly as possible.

All capacity estimates listed in this maintenance schedule are in thousands of decatherms and all capacity estimates except for the "Estimated Capacity Reduction During Outage" are stated as daily volumes.

The New/Changed column indicates projects that are new or have changed since the previous update.

To download the schedule to Microsoft Excel: Right click on the schedule and select "Export to Microsoft Excel".