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8.f1 Scandia Wastewater Power PointScandia Wastewater FLOW DATA Background The charts within this presentation represent the recorded daily flows monitored by the Public Works Department. Public Works is able to document flow through the use of the SCADA system which sends lift station information to the Public Works Building and field monitoring in the Uptown system. All of the daily flow measurements use pump run time multiplied by the flow rate of each pump. Flow rates are determined through draw down testing which measures how long the pump lowers water level and calculating in the factor of water flowing into the wet well. Although not entirely accurate it is standard practice when no flow meters are installed in the system. Flow monitors in the Bliss system give Public Works a much better understanding of actual flows as long as the monitors are calibrated every year by a qualified technician. Uptown 2021 0 1000 2000 3000 4000 5000 6000 7000 8000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Uptown 2021 Avg APDM Peak PPDM ------------Avg = Recorded average gallons per day for the month ------------APDM = Permitted Average Gallons per Day ------------Peak = Recorded one day peak flow ------------PPD = Permitted Peak Gallons per Day Anderson Erickson 2021 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec A/E 2021 Avg APDM Peak PPDM ------------Avg = Recorded average gallons per day for the month ------------APDM = Permitted Average Gallons per Day ------------Peak = Recorded one day peak flow ------------PPD = Permitted Peak Gallons per Day Bliss 2021 ------------Avg = Recorded average gallons per day for the month ------------Peak = Recorded one day peak flow ------------PPD = Permitted Gallons per Day 0 5000 10000 15000 20000 25000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Bliss 2021 Avg Peak PPDM Summary Uptown System: operating near 50% of the permitted gallons per day * A/E System: operating near 70% of the permitted gallons per day Bliss System: operating near 50% of the permitted gallons per day * According to the permitted capacity of the system. Bolton and Menk have provided guidance to operate the system below the Washington County permit average daily flow.