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4. a) 8-27-2020 Wastewater Committee - update City of Scandia Wastewater Advisory Committee Wednesday, August 26th 6:30 P.M. Director of PW - Adam Hawkinson Staff Report – Wastewater Advisory Committee: 8-26-20 Dual sewer services on one household: The City is in the process of amending its ordinance to denote that separate services need to be established as homes are removed and rebuilt that were once dual users of a tank. There has been an unforeseen issue with what needs to be done. If the person with the power to the dual unit breaks off the one without the power supply needs to get hooked up. Who pays for that? Infiltration & inflow - 201 systems: There is one home that water was found running through their sewer line though no one was home. I was called to address a sewer alarm that had gone off after a large rain event and no one was home. The pump in the tank could not keep up with the inflow. Further review of this address will be scheduled. Staff is proposing to replace lids accesses for the pump tanks in the yards of several residences in both the AE and Bliss additions. Some lids are below grade and water runs toward them and others are level and will take in water in the spring thaw. The sample letter that will be mailed to residents explaining the process is attached to this report. 201 – Anderson Erickson: This system is at capacity unless we can solve the I&I issue. This is also the area that brought to light the power issue noted in the dual tank section that should be discussed. 201 - Bliss: FEMA funds have arrived for the flooding and pumping that occurred during the spring of 2019. There should be more funding arriving this month for the replacement of a pump in lift station #2 and electronic valves in Lift Station #3. Staff is attempting to mitigate the nitrate issue with mechanical and environmental actions. It will take some time to see the results of the modifications. By this time next year any impacts should be evident. Uptown: The incoming water from the wells in town are no where near what is being recorded at the drainfield. A smoke test was performed on the Uptown system to check for leaks. It was used to find any possible I&I issues with the system. One open access point was discovered. It was not a large contributor. Also, it was discovered that the pump timers were not recording the proper time. Since the pumps run on a timer system, I have been doing my best to calibrate the system so the holding tank isn’t filling to much or drawing down too much. From the latest information taken from tracking the tank, this system could be near or at capacity when all businesses and the church are open for business.