1.	Name of the facility:
		Alcoa Primary Metals - Intalco Works

2.	Location:
		Northwest Whatcom County, approximately five miles west of Ferndale, Washington

3.	Distance from the US/Canada border:
		Approximately 10 miles

4.	Type/size of the facility:

                The Alcoa Intalco Works is a primary aluminum smelter which uses the
                Hall-Heroult process to produce elemental aluminum from alumina (aluminum
                oxide) in 720 electrolytic cells called pots.  The facility is a
                side-worked prebake plant with three potlines in six potroom buildings.
                The facility is currently limited by their air permit to a production
                rate of 307,000 tons per year (tpy) of aluminum.  Alcoa proposes to
                increase production to 322,000 tpy of aluminum by increasing the
                electric current sent to the pots from 143 kiloamperes (kA) to 147 kA.
                No modification of the aluminum production equipment will be required.
                Alcoa proposes to add a new conveyor system to blend low sulfur coke
                into the anode production process so that sulfur dioxide (SO2) emissions
                will not increase despite the increase in production.

5.	Sources of emissions:

                The proposed modification will not add new emission sources.
                Emissions will increase from existing sources as the production rate
                increases.  The facility has many individual emission sources which
                can be grouped into eight process units: general facility, green
                carbon, baked carbon, anode rodding, potlines, metal products,
                ancillary equipment and maintenance.

6.	Type of fuel:

		Natural gas

7 & 8.	Type and quantity of emissions and emission control technology:

        	Pollutant	Past Actual     Future          Net Emissions   Emission
                                Emissions       Potential       Increase        Control
                                (1999 - 2000)   Emissions       (tpy)           Technology
                                (tpy)           (tpy)

                Particulate     712             965             253             Dry alumina
                Matter <=10æm                                                   scrubbers & wet
                (PM-10)				                                roof scrubbers

        	Sulfur dioxide	4981		4981		0		Low sulfur coke
        	(SO2)				 				blending

               	Nitrogen	133		140		7               Use of natural
        	oxides								gas, good
        	(NOx)				  				combustion
        									practice, low NOx
        									burners

        	Carbon dioxide	34,157		35,826		1669		Proper cell
        	(CO2)				 				operation and
        									current efficiency
        									optimization

        	Volatile	108		115		7		Good operation
        	organic								practices
        	compounds
        	(VOC)

        	Lead		0.23		0.24		0.01		Same as for PM-10
        	(Pb)

        	Total		136		211		75		Same as for PM-10
        	Fluorides
        	(TF)

        	Sulfuric	10		11		1		Sulfur limit in
        	acid mist 							pitch used in anodes
        	(H2SO4)



9.	Date permit application was received:

		Original application - June 26, 2002
		Revision - September 13, 2002

10.	Stack height and diameter:

                No new stacks are associated with this modification.  The
                many individual emission sources at this facility were
                consolidated for air quality modeling purposes and modeled
                as 27 point sources, 6 line sources and 8 volume sources.
                Stack heights for the largest emission sources ranged from
                16 to 25 meters.

11.	Permit agency contact name, address and telephone:

		State of Washington Department of Ecology
		Air Quality Program
		Attn: Mr. Bernard Brady
		P.O. Box 47600
		Olympia, Washington 98504-7600

		(360) 407-6803