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.

Longview Fibre Industrial Waste (IW) Discharge: Final NPDES Wastewater Permit Related Documents

Longview Fibre Paper and Packaging, Inc. - Pulp, Paper, and Paperboard Mill IW - Final Permit

Longview Fibre Paper and Packaging, Inc. - Pulp, Paper, and Paperboard Mill IW - Final Fact Sheet

Permitted Mixing Zone Size for Toxicity:

Waterbody: Columbia River at about River Mile (RM) 67.5.

Acute Mixing Zone: 468 feet wide extending 34 feet upstream and 34 feet dowstream.

Acute Mixing Zone Surface Area: Estimated SA is 31,824 square feet.

Chronic Mixing Zone: 500 feet wide extending 100 feet upstream and 340 feet downstream.

Chronic Mixing Zone Surface Area: Estimated SA is 220,000 square feet.

Chronic Mixing Zone Volume: Depth is approximately 40 feet and the estimated volume is 8,800,000 cubic feet (about 66 million gallons).



*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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