Liberte Environmental Associates

NPDES Permits Potentially Affecting Water Quality


Final NPDES Wastewater Permits - Issued by Oregon Department of Environmental Quality

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

Reynolds Metals Co. Industrial Waste (IW) Discharge: Final NPDES Wastewater Permit Related Documents

Reynolds Metals Co. IW - Cyanide and Fluoride Groundwater Remediation & Other Final Permit*

Reynolds Metals Co. IW - Cyanide and Fluoride Groundwater Remediation & Other Final Fact Sheet*

Permitted Mixing Zone Size for Toxicity:

Acute Mixing Zone Radius: 16 feet

Acute Mixing Zone Surface Area: Calculated SA at 804 square feet

Chronic Mixing Zone Radius: 164 feet

Chronic Mixing Zone Surface Area: Calculated SA at 84,496 square feet

Chronic Mixing Zone Volume: DEQ does not provide Columbia River MZ depth in the fact sheet so MZ volume is not yet determinable.

*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.