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Geographic / Ecosystems Initiatives

Northwest Pipeline Corporation

  1. Name of the facility:
      Northwest Pipeline Corporation

  2. Location:
      Mount Vernon, Washington. Skagit County. 48øN 25'19" latitude, 122øW 12'58" longitude.

  3. Distance from the US/Canada border:
      30 miles

  4. Type/size of the facility:
      Existing 12,424 horsepower natural gas pipeline compressor station utilizing two combustion turbines. Applicant proposes to install two additional turbines to increase capacity by 17,341 horsepower @ 59øF .

  5. Source of emissions:
      Natural gas fired turbines

  6. Type of fuel:
      Natural gas

  7. Type/quantity of emissions:
  8. Emission control technology:

    For two new gas fired combustion turbines (additional 17,341 horsepower @ 59øF), maximum permitted potential to emit considering controls:

    Pollutant Quantity of Emissions
    (tons / yr)
    Emission Control Technology
    PM10 4.1 Pipeline natural gas & good combustion practices
    SO2 2.1 Pipeline natural gas & good combustion practices
    NOx 61.8 Pipeline natural gas, good combustion practices & SoLoNOx™
    VOC 21.6 Pipeline natural gas & good combustion practices
    CO 75.3 Pipeline natural gas & good combustion practices
    HAP 0.8 Pipeline natural gas & good combustion practices

  9. Date permit application received:

  10. Stack height and diameter:
      Height: 50 feet
      Square Width: 4 feet

      Stack 2:
      Height: 40 feet
      Square Width: 8.46 feet

  11. Permit agency's contact name, address, telephone number:
      State of Washington Department of Ecology
      Air Quality Program
      Attn: Bernard Brady
      P.O. Box 47600
      Olympia, WA 98504-7600

      Phone: 360.407.6803

      Northwest Air Pollution Authority
      Attn: Lester Keel
      1600 South 2nd Street
      Mount Vernon, WA 98273-5202

      Phone: 360.428.1617, ext 209



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