The Evergreen Expansion results in an additional 276,625 dekatherms/d of contracted firm transportation that serves market growth in the state of Washington, and is the first of three expansion projects that Williams expects to bring into service this year on its Northwest Pipeline and Transco systems.
The Evergreen Expansion, which was completed on-schedule, includes construction and installation of approximately 45km of 36-in mainline and an additional 64,160-HP at four compressor stations in Washington’s Sumas-Chehalis Corridor. Related work on Northwest Pipeline’s Columbia Gorge facilities is on schedule for completion by November.