Facilities

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.
Operating.
Columbia and Washington counties.
Applicant/Certificate holder: Northwest Natural Gas Company.
ODOE contact: Duane Kilsdonk
Applicant/Certificate holder contact: Melissa Moore
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Project Timeline

  
Description
  
10/04/1988
02/15/1989
03/13/1998
03/17/1998
04/09/1999
04/20/1999
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​Contact the Facility Siting Team:
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Exhibit Files Reference

  • Exhibit A: Applicant Information 
  • Exhibit B: Project Description
  • Exhibit C: Property Location and Maps
  • Exhibit D: Organizational Information
  • Exhibit E​: Permits Required
  • Exhibit F: Property Ownership 
  • Exhibit G: Materials Analysis
  • Exhibit H: Geology and Soil Stability 
  • Exhibit I: Soils
  • Exhibit J: Wetlands
  • Exhibit K: Land Use
  • Exhibit L: Protected Areas
  • Exhibit M: Financial Analysis
  • Exhibit N​: Non-generating Facility Information
  • Exhibit O: Water Requirements
  • Exhibit P: Fish Wildlife Habitat 
  • Exhibit Q: Threatened and Endangered Plants and Animals
  • Exhibit R: Scenic Aesthetic Values 
  • Exhibit S: Cultural Resources
  • Exhibit T: Recreational Facilities 
  • Exhibit U: Public Services
  • Exhibit V​: Waste Minimization 
  • Exhibit W: Site Restoration
  • Exhibit X: Noise 
  • Exhibit Y: Carbon Dioxide Emissions 
  • Exhibit Z: Cooling Towers  
  • Exhibit AA: EMFs – Electric and Magnetic Fields
  • Exhibit BB: Other Information
  • Exhibit CC: Additional Statutes Rules Ordinances
  • Exhibit DD​: Other Specific Standards