08-24-2020 Council Packet - Laserfiche WebLink

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CITY COUNCIL WORK SESSION DRAFT 1 CITY OF LINO LAKES 1 MINUTES 2 3 DATE : July 6, 2020 4 TIME STARTED : 6:00 p.m. 5 TIME ENDED : 10:30 p.m. 6 MEMBERS PRESENT : Council Member Stoesz, Lyden, Ruhland, 7 Cavegn and Mayor Rafferty 8 MEMBERS ABSENT : None 9 Staff members present: City Administrator Sarah Cotton; Community Development 10 Director Michael Grochala; Director of Public Safety John Swenson; Public Services 11 Director Rick DeGardner; Human Resources Manager Karissa Bartholomew; City Planner 12 Katie Larsen 13 1. Water Treatment Plant Feasibility Study, Rick DeGardner and Greg 14 Johnson of WSB & Associates, Inc. – Greg Johnson, WSB & Associates, presented 15 information on the feasibilit y study they have completed for the City. He noted the recent 16 history of manganese levels in some City wells, a public information campaign and the 17 council’s direction to prepare a feasibility study on the possibility of a water treatment 18 facility. He r eviewed basics of the report, including information on: 19 20 Water Sampling - to identify all contaminants in the water that could potentially cause 21 concern; also looking at what area cities are doing for water treatment; Environmental 22 Protection Agency (EPA) rules and Minnesota Health Department guidance is included. 23 24 Water Demand History (past ten years) were reviewed in order to understand maximum 25 demands. 26 27 Options studied – drill new wells, purchase water from another community, or implement 28 treatment. With the option to drill new wells, including in deeper aquafers, there’s no 29 guarantee that issues would change. Looking at purchasing water, the cost would be high 30 even with multiple communities participating in building a system from St. Paul and 31 purchasing from other area communities is not seen as feasible either. The study looks at 32 the possibility of water treatment facilities that would meet the City’s projected demands 33 to 2040. 34 35 Water Treatment Elements – recommend conventional gravity filtration with biologic 36 treatment of manganese and that would include savings in chemicals cost. Additional 37 water mains would be required but improvements could be phased over time. 38 39 Councilmember Lyden noted that the City of Lino Lakes surrounds the City o f Centerville 40 which must have a similar water supply. He wonders how that community deals with its 41 water. Staff said that Centerville does have a treatment process and that the City would 42 probably have discussions with Centerville about involvement in development of a 43 treatment plant if and when that was appropriate. Regarding manganese levels in other 44