Alcoa Inc, Wenatchee Works

The Dept of Ecology invites you to request a public comment period on Alcoa Wenatchee Work's Notice of Construction (NOC) Order No. 8871. The request period runs December 27, 2011 - January 13, 2012.

The order will allow alteration of anode trays on line 5. We received a NOC application on November 7, 2011. The objective of the anode tray project is to improve product purity by reducing iron content in aluminum. This will be accomplished by increasing anode block size to better cover the steel stub. Increased production is not an objective of this project, however increased anode size could increase production by 486 tons per year, 0.3 percent of the smelter's total output.

Air emissions are expected to increase slightly as a result of the project. This includes:

Total particulate increase by 1.52 tons per year
Sulfur dioxide increase by 8.1 tons per year
Carbon monoxide increase by 60 tons per year
Total fluoride increase by 0.35 tons per year

Ecology plans to issue NOC Order No. 8871 to allow this project and control anticipated increases in air emissions.

Requests for a public comment period must be submitted in writing by letter, fax or e-mail by 5:00 p.m. January 13, 2012. Send requests to:

Angie Fritz
Dept of Ecology
Industrial Section
P.O. Box 47600
Olympia, WA 98504-7600
e-mail: angela.fritz@ecy.wa.gov
Fax: (360) 407-6102

Location & History

This aluminum smelter produces primary aluminum metal by the pre-bake reduction process. The facility began operations at the Wenatchee Works primary aluminum smelter in 1952, with four pot lines; it added pot line #5 during the 1980s. In 2004 the smelter's operators retired Pot Line #4. The smelter now contains a combined total of 608 reduction cells, with existing plant production capacity of 188,257 metric tons per year. In July 2001, ALCOA temporarily curtailed production (shut down 90% or more of its operations); Since January 2005, the smelter has been operating two pot lines (Line #1 and Line #5).

Facility Site Number: 1

Location and Mailing address:

Wenatchee Works
6200 Malega Alcoa Highway
Malega, WA 98828-9728

Industrial Section Permits.

Ecology Contact:

Bob King

For more information visit the Company Website.

Facility 24 hour Contact Number:

(509) 663-9227