2017-12-13 Set Agenda & Handouts

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C �rn�, eryif e rRso�a;n,Stmrt,Ccnrerstil&,ararssosa L.++ LJlIL I.SfiET11 llb5i 65)-429-32.32 Pr FOL 651429-8629 December 12, 2017 Honorable Mayor and Council City of Centerville 1880 Main Street Centerville, MN 55038 Dear Honorable Mayor and Council: Included in your City Council packets for the December 13`,meeting was a simple list of 3 quotes for the rehabilitation of Lift Station Q. This letter intends to explain the quotes and outline staff's recommendation for award of the rehabilitation contract. Background Sanitary Sewer Lift station#2 is on Peltier Lake Drive,just west of Mill Road on the west side of Clearwater Creek. It serves a good portion of the northwest part of the city and also takes flow from Lift Station#1. As with all of our lift stations, it has two pumps, for redundancy and for emergency(high flow)instances. Recently, one of the pumps has been having performance issues,is beginning to deteriorate, and is causing additional deterioration at the connection between the pump and internal piping. Some of the issues are thought to be from the"flushable wipes"and other debris. Because of this trend, many municipalities are switching out pumps for ones which are more reliable and deal better with solids,rags, etc. The new,more reliable pumps are somewhat less efficient,but this is offset by their ability to pass troublesome debris in the wastewater. The city's public works staff solicited proposals, through direct negotiation, from three different vendors for the rehabilitation work needed at the lift station, including new pumps, rail system and the necessary appurtenances. Often,in this industry, each vendors favors and perhaps exclusively deals with certain pumps or pump brands. With the three vendors selected, each proposed a slightly different pump, all of which are different from the previous pump style.