| Title |
A Water Quality Based Evaluation of Spokane Advanced Wastewater Treatment Plant Effluent Dilution and Receiving Water Quality During September 20-22, 1988 |
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| Publication number |
Date Published |
| 90-e07 | January 1990 |
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| VIEW NOW |
A Water Quality Based Evaluation of Spokane Advanced Wastewater Treatment Plant Effluent Dilution and Receiving Water Quality During September 20-22, 1988 (Number of pages: 42) (Publication Size: 1MB)
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| Author(s) |
Carey, B. |
| Description |
On September 20-22, 1988, a receiving water study was conducted at the Spokane Advanced Wastewater Treatment Plant on the Spokane River. The objectives were: 1) to characterize mixing of the effluent plume, and 2) to make recommendations for future mixing zone boundaries. Mixing was incomplete at 300 and 1,000 feet downstream of the discharge when dilution was 20:1. Mixing was complete below the riffle area 2,600 feet downstream. A mixing zone boundary is recommended at 300 feet, despite incomplete mixing. Reduced discharge limits are recommended for ammonia, total residual chlorine and fecal coliform bacteria. Further effluent temperature and metals sampling is recommended to refine discharge limits. |
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| Contact |
EAP Publications Coordinator at 564-669-3028 or EAPpubs@ecy.wa.gov |
| Keywords |
mixing zone, stream, receiving water, wastewater treatment plant, metals, temperature, Spokane River, evaluation, study, river, water, water quality, quality, effluent, fecal coliform, ammonia, bacteria |
| WATERSHED |
Water Resource Inventory Area 54 Lower Spokane |
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