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City of Sumas Class II Inspection, September 23-25, 1991

Publication number Date Published
92-e29October 1992
VIEW NOW City of Sumas Class II Inspection, September 23-25, 1991 (Number of pages: 17) (Publication Size: 1MB)

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Author(s) Glenn, N.
Description A Class II Inspection was conducted at the town of Sumas Wastewater Treatment Plant on September 23-25, 1991. The inspection found a plant which was performing quite well, achieving 98 percent removal of BOD5 and TSS, as well as nitrification and denitrification. Copper, lead, and zinc were detected, but at concentrations below water quality standards. No toxicity was indicated by bioassays run on effluent. The present sampling procedure involving 8-hour hand composites is not always producing representative samples, and should be replaced.
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Keywords wastewater treatment plant, bioassay, toxicity, water, water quality, zinc, lead, effluent, copper
WATERSHED Water Resource Inventory Area 01 Nooksack