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| Title | Impacts of Eastern State Hospital and Lakeland Village Wastewater Discharges on the Quality of West Medical Lake | |||
| Month-Year Published | March 1992 | |||
| Online Availability |
2307 kilobytes, requires version 4.0 or later of Adobe Acrobat Reader Software get Acrobat Reader
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| Short Description |
Limited Class II Inspections and receiving water surveys were conducted at the Eastern State Hospital and Lakeland Village Wastewater Treatment Plants (WTPs) on August 28 29 and October 30-31, 1990. Objectives of the study were to determine WTP efficiency and assess impacts of effluent discharge on West Medical Lake. (Also see abstract below) | |||
| Publication Number | 92-e63 | |||
| Author(s) | Willms, R. and G. Pelletier | |||
| Print Availability |
Not maintained in stock. Copy must be made from archive version.
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| Number of pages | 49 pp. | |||
| Keywords | chemical, chemical oxygen demand, effluent, fecal coliform, flow, inspections, lake, Medical , Medical Lake, objectives, outfall, phosphorus, quality, receiving water, results, study, total suspended solids, trophic status, wastewater treatment plant, water, water quality | |||
| Subject Waterbodies |
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| Abstract | Long Description |
Limited Class II Inspections and receiving water surveys were conducted at the Eastern State Hospital and Lakeland Village Wastewater Treatment Plants (WTPs) on August 28 29 and October 30-31, 1990. Objectives of the study were to determine WTP efficiency and assess impacts of effluent discharge on West Medical Lake. In general, effluent quality was poorer at the Eastern State Hospital WTP. This plant was approaching its permit limits for biochemical oxygen demand and total suspended solids. Fecal coliform permit limits were exceeded in five of six effluent samples collected. Results of lake water quality determinations indicated extreme nutrient enrichment and hypereutrophic status. High fecal coliform levels were found in lake samples near the Eastern State Hospital outfall. A water budget indicated that effluent wastewater accounted for 51 percent of total inflows to the lake. Approximately 89 percent of the total phosphorus external load was a result of WTP discharges. In-lake nutrient recycling was also found to be significant. Nutrient modeling indicated that phosphorus controls for both external and internal loading would be needed to enhance the lake from its current hypereutrophic state to a eutrophic status. Lake management alternatives were explored and several recommendations suggested. |
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