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Mist Underground Gas Storage Facility

Facility: The facility consists of seven underground natural gas storage reservoirs, a compressor station and gathering pipelines. The existing permitted storage area consists of about 2,828 acres.

Status: Operating
 
Location: Columbia County, beginning approximately one-half mile southwest of the unincorporated community of Mist and continuing north for approximately 3.5 miles.
 
Site certificate holder: NW Natural Gas
 
Contact Information
 
SITE CERTIFICATE HOLDER
OREGON DEPARTMENT OF ENERGY STAFF
Melissa Moore
Duane Kilsdonk
220 NW 2nd Ave.
395 E. Highland Ave.
Portland, OR 97209
Hermiston, OR 97838
503-220-2436
 
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)
PROJECT PHASE DETAILS
DATE
Declaratory petition: Requests EFSC declare that expansion of the facility should be reviewed as amendment #11 of the existing facility rather than an application for a new site certificate.  Requests public notice be as set forth in OAR 345-027-0060
June 21, 2013
April 8, 2013
 
 
 
May 23, 2013
Deadline to submit petition to intervene
June 14, 2013
Consolidated site certificate (amendment #10): Consolidates all previous approved amendments into a single Consolidated Site Certificate.
June 9, 2008
 
 
May 30, 2008
Site certificate amendment #9: Authorizes increase to the allowed throughput to 515 million cubic feet per day (MMcfd), authorizes construction of improvements and installation of new dehydration facilities and gas quality and monitoring equipment; authorizes development of related and supporting facilities associated with new underground storage reservoirs, allows termination of vibration monitoring program created in Amendment #1.
Dec. 8, 2003
 
 
 
  
 
 
Dec. 5, 2003
Site certificate amendment #8: Authorizes increase to the allowed throughput to 317 MMcfd, authorizes installation of one new injection/monitoring well and installation of new compressor subject to carbon dioxide standards at OAR 345 Division 24.
Nov. 14, 2001
 

 
Nov. 14, 2001
Site certificate amendment #7: Authorizes increase to the allowed throughput from 190 MMcfd to 245 MMcfd.
Dec. 12, 2000
 
Nov. 27, 2000
Site certificate amendment #6: Authorizes development of related and supporting facilities associated with new underground storage reservoirs, removes operating restrictions added in Amendment #4, adds new site certificate conditions associated with further development.
April 20, 1999
 
 
 
 
March 30, 1999
Site certificate amendment #5: Replaces the amendment process set forth in section VII of the original Site Certificate with the process set forth in OAR Chapter 345 Division 27. Does not make all Division 27 rules applicable, but only those related to Site Certificate Amendment process.
March 17, 1998
 
 
 
 
March 13, 1998
Site certificate amendment #4: Enlarges the site boundary, authorizes development and upgrade of related and supporting surface facilities, authorizes development and operation of new connecting pipelines, adds new site certificate conditions.
July 21, 1997
 
 
 
July 21, 1997
Site certificate amendment #3: Allows for the replacement of two poorly functioning injection/withdrawal wells and the addition of two new wells to increase withdrawal capacity.
Sept. 21, 1990
Site certificate amendment #2: Allows for the addition of one monitoring well.
Oct. 2, 1988
Site certificate amendment #1: Extends construction completion date, incorporates a monitoring program, adds notification requirements for certain events and clarifies other language.
Oct.  29, 1987
June 19, 1981
Sept. 30, 1981