Liberte Environmental Associates

NPDES Permits Potentially Affecting Water Quality


Final NPDES Wastewater Permits - Issued by Washington Department of Ecology

This list consists of permit documents* (see end) made available by Washington Ecology and is not all inclusive. All documents are PDF except where indicated.

Chinook Ventures Longview Aluminum Smelter Industrial Waste (IW) Discharge: Final NPDES Wastewater Permit Related Documents

Chinook Ventures Longview Aluminum Smelter IW - Final Permit* (Expired in 1995, extended by Ecology)

Chinook Ventures Longview Aluminum Smelter IW - Final Permit Modification Letter* (2003)

Chinook Ventures Longview Aluminum Smelter IW - Final Fact Sheet* (Released in 1990 for 1995 permit, which has been indefinitely extended.)

Read article: "Millennium buys Chinook Ventures site, pledges cleanup of contamination" (TDN.com January 12, 2011)

Also read this article: "Millennium offers to delay coal exports, conduct environmental review" (TDN.com March 7, 2011)

Permitted Mixing Zone Size for Toxicity:

Waterbody: Columbia River at about River Mile (RM) 63.

Acute Mixing Zone: Not referentially given by Ecology.

Acute Mixing Zone Surface Area: Not given.

Chronic Mixing Zone: Not referentially given by Ecology.

Chronic Mixing Zone Surface Area: Not given.

Chronic Mixing Zone Volume: Not Given.

*LEA Disclaimer for compiled, unlocked and OCR documents: From time to time LEA will post on this website scanned documents, and additional documents otherwise limited in accessibility. Accordingly, LEA may use document unlocking and optical character recognition (OCR) capabilities to provide accessible, tagged text documents for use by people with visual impairments, and also provide searchable documents. The unlocking and OCR processes are not faultless, and hence LEA cannot guarantee document perfection. However, taking these caveats into account, document accessibility is greatly increased. LEA also posts the original document where necessary, as obtained by LEA, such that users may compare any potential imperfections in the unlocked and OCR documents.

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