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| Title | Toppenish Sewage Treatment Plant Class II Inspection, May 29-30, 1990 | |||
| Month-Year Published | October 1991 | |||
| Online Availability |
2127 kilobytes, requires version 4.0 or later of Adobe Acrobat Reader Software get Acrobat Reader
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| Short Description |
A Class II Inspection was conducted at the Toppenish Sewage Treatment Plant (STP) on May 29-30, 1990. The Toppenish STP is a rotating biological contractor (RBC) type secondary treatment facility. Discharge is to the Yakima River via the Toppenish Drain as regulated by NPDES Permit No. WA-002068-1. The plant appeared well maintained and well operated during the inspection. The effluent was within most permit limits. (Also see abstract below) | |||
| Publication Number | 91-e02 | |||
| Author(s) | Andreasson, J. and M. Heffner | |||
| Print Availability |
Not maintained in stock. Copy must be made from archive version.
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| Number of pages | 45 pp. | |||
| Keywords | bioassay, biological, effluent, laboratory, NPDES, priority pollutant, receiving water, river, site investigation, toxicity, water | |||
| Subject Waterbodies |
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| Abstract | Long Description |
A Class II Inspection was conducted at the Toppenish Sewage Treatment Plant (STP) on May 29-30, 1990. The Toppenish STP is a rotating biological contractor (RBC) type secondary treatment facility. Discharge is to the Yakima River via the Toppenish Drain as regulated by NPDES Permit No. WA-002068-1. The plant appeared well maintained and well operated during the inspection. The effluent was within most permit limits. Few priority pollutants were detected in the effluent. Bioassays conducted with Ceriodaphnia dubia, fathead minnow, and rainbow trout indicated no effluent toxicity. Plant laboratory procedures were generally good. Receiving water samples found fecal and total coliform concentrations were greater in the Toppenish Drain than in the STP effluent. |
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