Publication Summary

A Class II inspection was conducted at the Olympus Terrace Sewer District Wastewater Treatment Plant (WWTP) on October 16-19, 1995. The plant was performing well during the inspection. The conventional parameters of BOD5, TSS, and fecal coliform indicate a well-treated, high quality effluent. The WWTP was achieving substantial nitrification and may have been achieving denitrification at the time of the inspection.

A Class II inspection was conducted at the Olympus Terrace Sewer District Wastewater Treatment Plant (WWTP) on October 16-19, 1995. The plant was performing well during the inspection. The conventional parameters of BOD5, TSS, and fecal coliform indicate a well-treated, high quality effluent. The WWTP was achieving substantial nitrification and may have been achieving denitrification at the time of the inspection.

Flow appeared to be turbulent at the upstream end of the flume, and the flume should be evaluated for accuracy. The oxidation ditch in use was being operated in a minimum dissolved oxygen mode. Dissolved oxygen in the ditch was found to be low but adequate to provide good treatment without objectionable odors. There is evidence of nitrification of the Olympus Terrace effluent sample after collection, resulting in non-representative NH3-N and NO2 + NO3 results. The pretreated wastewater discharged to the Olympus Terrace collection system from Production Plating and TRAMCO met State permit limits for specified metals. Less than 10% of the loadings of metals (other than chromium and nickel) to the Olympus Terrace WWTP were accounted for by the two industrial sources sampled.

The fecal coliform count was higher than the maximum limit for Class A sewage sludge. All metals in the sludge sample were found in concentrations below EPA sludge application limits and ceiling concentrations for land application of municipal sludge.