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6 a.m, to 9 a.m. - 35 percent of.daily rated capacity (210 gallons) 11 a.m. to 2 p.m. - 25 percent of daily rated capacity (150 gallons) 5 P.m. to 8 p.m. -40 percentof daily.rated capacity(240 galk)ns) ]Posing is accomplished in by opening a pneumatic valve for a sufficient period of time to feed 6 gallons to z dw#est plant(approximately 17 seconds).-The number of doses were unifor rlty spread out throughout each dosing period. - After a start up period (from sero to three weeks at the manufacturer's discretion), the plant is subjected to the following loading sequence: Design loading - 16 weeks Stress loading - 7.5 weeks Design kxiding, 2.5 weeks During the design loading periods, flow proportioned 24-hour composite sian%ples are collected of the influe .and effluent five times (days)-per week. The influent*and effkmnt-samples are analyzed for carbonaceous five-day biocherrAcal oxygen demand, and,total suspended solids concentrations. On-site determinations of the effluent temperature, pH, and dissolved oxygen are made five times (days) per week. In plant.measurements of aerMlon chamber temperature, pH, dish ved oxygen, and 45minute settleable solids are also made during the evaluation. Stress testing is designed to evaluate how the plant performs under non-ideal conditions, including high and low hydraulic loadings and electrical or system failure. The test sequence Includes (1)Wash Day stress, (2) Working Parent stress, (3) Power/Equipment Failure stress, and (4) Vacation stress. Detailed descriptions of the stress sequences are shown in Appendix B. During:the Oess-test sequences, 24-hour compcsitesamples are wed`before and after each stress dcsing-patterrf The analyses and. on-site determinations comprteted on the samples are the same as described for the design load tesfing. Each stress is folk w®d by seven consecutive days of dosing at design rated capacity before beginning the next.stress test. Sample collection is it ted twenty four hours after completion of wash day,working parent, and vacation stresses to allow the plant to recover from the stress. Samples are collected.beginning 48 hours-after completion of the power fie stress. In order for4ha;plant to ad*"Class t effluent it is requlred�thL produce an effluent which meets the EPA guidelines for-secondary efflow.t discharge-': (1) CBOD5: The 30-day average of-effluent.samples shall rot!exoeed 25 mg1L and each 7-day average of effluent samples shall not exceed 40 mg/L. . (2)Suspended Solids: Each 30-day average of effluent samples shall not exceed 30 mg/L and each 7-day average of effluent samples shall not exceed 45 mg/L. (3) pH: Individual effluent values remain between 6.0 and 9.0. Requirements are also specified for effluent color, odor, oily film and foam, as well as maximum noise levels allowed from the plant. 5911MIUM, Pis report may not be dwoed'in whole or in part Page 9 of 49 Final Report without the expressed written oonsent of NSF International. April 2000