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Comment Period

Northwest Alloys, Addy

Water quality permit

Sept. 22, 2021 - Oct. 29, 2021, 11:59 p.m.

We invite you to comment on the proposed renewal of the State Waste Discharge water quality permit for Northwest Alloys, Inc. in Addy.

Review draft documents

Due to COVID-19, documents are available for review online only. If you need a hard copy document, please contact Angelina Ward at 360-407-6916 or angelina.ward@ecy.wa.gov.

This magnesium smelter operated between 1976 - 2001. The smelter is temporarily shut down and Northwest Alloys, a subsidiary of Alcoa, plans to sell the facility as an industrial site.

  • The company has completed mine closure and reclamation requirements at the site.
  • Northwest Alloys neutralizes high-pH wastewater and mixes it with stormwater, treated sanitary wastewater, and well water. They store this mixture onsite. When there is more wastewater than they can store, they use a limited amount to irrigate croplands.
  • Pond 3 stores the old wastewater from the magnesium making process. Northwest Alloys is looking into options for treatment or reuse of this water.
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Questions

Angie Fritz
Communication and public participation lead
angela.fritz@ecy.wa.gov
360-407-7393

To request ADA accommodation, contact Ecology's ADA Coordinator by email at ecyadacoordinator@ecy.wa.gov, or call 360-407-6831, 711 (relay service), or 877-833-6341 (TTY). More about our accessibility services.