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Mr. Rick DeGardner <br />June 2, 2021 <br />Page 3 <br /> <br />Sampling Point Bi-Monthly Sampling <br />and Independent Laboratory <br />Analysis Required <br />Raw water at pilot plant entry point Ammonia, total phosphorus, alkalinity, and total <br />organic carbon (TOC can be tested monthly) <br />Biological contactor aerator column effluent Ammonia, total phosphorus, and heterotrophic <br />plate count <br />Biological filter column effluent Ammonia, total phosphorus, and heterotrophic <br />plate count, alkalinity <br />Manganese filter column effluent Ammonia, total phosphorus, heterotrophic plate <br />count, iron, and manganese <br /> <br />The biological filter and manganese filter columns will need to be backwashed once every 4 to 7 <br />days, or as needed, by utility staff. We estimate that this task will require about 20 to 30 minutes <br />every 4 to 7 days. <br /> <br />Pilot Report <br />Upon completion of the pilot study and receipt of utility’s on-site water quality analysis data and <br />the independent laboratory’s water quality reports, WSB will provide a comprehensive pilot study <br />report with a summary of the test results and recommendations. The report will be prepared by a <br />WSB water process engineer. <br /> <br />Additional Notes: <br /> <br />1. A ¾-inch hose bib connection and hose will need to be installed in the well influent water <br />line by utilities staff to supply water for the pilot plant. <br /> <br />2. 115V power from the City’s well house will be needed for the pilot plant. <br /> <br />Estimated Fees <br />WSB will complete the proposed Water Treatment Pilot Study for an hourly, not-to-exceed cost of <br />$26,400.00. This letter represents our understanding of the Water Treatment Pilot Study. If you <br />are in agreement with the scope of services and proposed fee, please sign in the appropriate <br />space below and return one copy to us. <br /> <br />If you have any questions about this proposal, please feel free to call me at (612) 209-0140. <br /> <br />Sincerely, <br /> <br />WSB <br /> <br /> Greg F. Johnson, PE <br />Director of Water/Wastewater <br /> <br />Cc: Michael Grochala, City of Lino Lakes <br /> Justin Williams, City of Lino Lakes <br />Diane Hankee, PE, WSB <br /> <br />