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South Mist Feeder Pipeline

Facility: South Mist is a 50-mile, 16-inch natural gas pipeline connecting the Mist Underground Storage Facility with NW Natural’s gas transmission lines. Also included is a 30-mile, 24-inch pipeline that travels from the underground storage facility to a connection with the 16-inch pipeline.

Status: Operating

Location: Columbia and Washington counties

Site Certificate Holder: Northwest Natural Gas Company

Contact Information 

Site Certificate Holder
Melissa Moore
Duane Kilsdonk
220 NW Second Ave.
625 Marion St. NE
Portland, OR 97209
Salem, OR 97301-3737
To Receive Updates by E-mail:
·          To receive e-mail notices about this project, please click here.
·          To receive e-mail notices for other projects or general EFSC announcements, please go here.
About Oregon’s siting process:
·          For more information about Oregon’s siting process outlined in the table below, please go here.
Project Status (Table details will be updated as project progresses)
Site certificate amendment #2: Added a second, 24-in pipeline generally within the approved corridor. At some locations, the pipeline deviates to avoid construction difficulties or to reduce the need for stream and highway crossings.
April 20, 1999
April 9, 1999
Site certificate amendment #1: Made amendments to the site certificate subject to the duly adopted rules of the Energy Facility Siting Council.
March 17, 1998
March 13, 1998
Oct. 4, 1988
Feb. 15, 1989