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| Title | City of Ellensburg Wastewater Treatment Plant Class II Inspection, April 1994 | |||
| Month-Year Published | April 1995 | |||
| Online Availability |
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| Short Description |
A Class II Inspection was conducted at the City of Ellensburg Wastewater Treatment Plant (WWTP) on April 19 and 20, 1994. The plant was producing a good quality effluent. The effluent met the limits in Ellensburg's National Pollutant Discharge Elimination System (NPDES) permit for BOD5, total suspended solids (TSS), and pH. Fecal coliform counts met weekly average limits and in one sample out of four exceeded monthly limits. Infiltration appeared to be responsible for the weak influent to the WWTP. (Also see abstract below) | |||
| Publication Number | 95-320 | |||
| Author(s) | Golding, S. | |||
| Print Availability | ||||
| Number of pages | 22 pp. + app (54 total) | |||
| Keywords | ammonia, bioassay, BOD5, discharge, effluent, fecal coliform, infiltration, Inspection, metals, national pollutant discharge elimination system, NPDES, pH, pollutant, priority pollutant, site investigation, total suspended solids, toxic, toxicity, treatment, TSS, waste, wastewater, wastewater treatment plant, water, water quality | |||
| Subject Waterbodies |
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| Abstract | Long Description |
A Class II Inspection was conducted at the City of Ellensburg Wastewater Treatment Plant (WWTP) on April 19 and 20, 1994. The plant was producing a good quality effluent. The effluent met the limits in Ellensburg's National Pollutant Discharge Elimination System (NPDES) permit for BOD5, total suspended solids (TSS), and pH. Fecal coliform counts met weekly average limits and in one sample out of four exceeded monthly limits. Infiltration appeared to be responsible for the weak influent to the WWTP. Nitrification of the effluent reduced TKN and NH3 through the plant considerably. Some denitrification also appeared to be occurring. Effluent ammonia met State fresh water quality criteria. Concentrations of VOA and BNA organic compounds and priority pollutant metals found in the effluent were below State fresh water quality criteria. None of the four bioassay tests conducted showed toxicity to the effluent sample. The sludge fecal coliform count met EPA requirements for Class A sewage sludge. Eleven priority pollutant metals were detected in the sludge, all below EPA limits for land application of sludge. |
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