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Okanogan Wastewater Treatment Plant Receiving Water Survey, October 1988

Publication number Date Published
90-e06January 1990
VIEW NOW Okanogan Wastewater Treatment Plant Receiving Water Survey, October 1988 (Number of pages: 18) (Publication Size: 760KB)

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Author(s) Carey, B.
Description A receiving water study was conducted on October 18-19, 1988, for the Okanogan Wastewater Treatment Plant (WTP) which discharges to the Okanogan River. Thorough, rapid mixing was observed. Fecal coliform bacteria exceeded the water quality standard both above and below the WTP following a brief rain event on October 18 (0.2 inch). Water quality close to the outfall was much improved compared to 1977 in terms of total residual chlorine (TRC), specific conductance, and temperature. Recommendations include establishing a dilution zone 300 feet or 10% of the length of the dilution zone, and establishing a permit limit for TRC of 0.7 mg/L.
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Keywords recommendations, Okanogan River, specific conductance, receiving water, wastewater treatment plant, conductivity, temperature, study, river, water, water quality, outfall, fecal coliform, bacteria
WATERSHED Water Resource Inventory Area 49 Okanogan