1.   Facility Information:
     Northwest Pipeline Corporation

     2.   Location: 
          Mount Vernon, Washington.  Skagit County. 48øN 25'19" latitude, 122øW 12'58"
     longitude.
               
     3.   Distance from U.S./Canada border:
     30 miles

     4.   Type and Size of 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 and 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			Emission Control Technology
				(tons / yr)

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.   Application Received:
          December 3, 2001.  Draft permit proposed to public June 24, 2002.  See
     http://www.ecy.wa.gov/programs/air/psd/PSD_Publiccomments.html

     10.  Stack1:
          Height: 50 feet
          Square Width: 4 feet

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

     11.  Permitting Authority:
          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