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
Permitted Mixing Zone Size for Toxicity:
Acute Mixing Zone Radius: 16 feet
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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.