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Description & Proposed Funding: <br />Equipment/Project Description: <br />This project allows for the evaluation and design of a solution(s) for the <br />sediment loading that is experienced from Marshall Lake. Possible <br />solutions that will be evaluated are: sediment basins, dredging and/or <br />modifications to the outlet works. This improves the ability to treat water <br />as it makes the raw water properties more consistent. <br />Cost allocation methodology for projects with more than one <br />funding source: <br />Project has only one funding source. <br />Project revenue or grants, if any, that will support the project <br />and the impacts to the operating budget: <br />No grants have been identified at this time. It is anticipated that <br />improved water quality will lower treatment O&M costs. <br />Percent <br />100% <br />Project Name: Marshall Lake Sediment Control <br />Program(s): <br />Utilities <br />Six -Year (2019-2024) Capital Improvement Plan <br />Request Form for Capital Equipment or Capital Project <br />Identification and Funding Source <br />Sub-Program(s): <br />Submitted By: Public Works <br />Water <br />Funding Source(s): <br />Version: 2/28/2018 <br />Water Utility Fund <br />100% <br />Estimated Cash Flow Schedule <br />Equipment or <br />Project Costs <br />Year 1 <br />2019 <br />Year 2 <br />2020 <br />Year 3 <br />2021 <br />Year 4 <br />2022 <br />Year 5 <br />2023 <br />Year 6 <br />2024 <br />Six -Year <br />Total <br />Land Acquisition <br />Design & Engineering <br />Other Prof Services <br />Construction <br />Other Equip/Project Costs <br />Capital Equipment Purch <br />110,000 <br />566,000 <br />110,000 <br />566,000 <br />Total Costs (Gross) <br />110,000 566,000 <br />676,000 <br />Grants or Other <br />Off -Setting Revenue <br />Impact to Annual <br />Maint/Operating Costs <br />Description and Justification <br />Justification and Alignment with Program/Sub-Program Goals & Key Performance Indicators: <br />Project assesses the best collection techniques, location and position of improvements to enhance and treat raw water from Marshall <br />Lake. A recent diver inspection of the Marshall Lake Outlet revealed that current sediment levels have reached the same level of the <br />Outlet Structure. Sediment levels in this area are estimated at approximately 5 feet above the reservoir bottom. This project will <br />address the immediate need of dredging this material and development of possible long term maintenance solutions to prevent future <br />build up. The reduction in sediment loading in the raw water will improve the entire treatment process by requiring less chemical <br />consumption, fewer backwashes of the filters and lowering the amount of solids sent to the drying beds and discharged to the WWTP. <br />All of these items result in better efficiency and cost savings. Additionally, long term water supply strategies contemplate delivering <br />this water to Harper and Louisville Reservoirs. This project will look to prevent transporting this problem to these downstream <br />reservoirs. <br />Is there a computer hardware or software component to this request? No If so, has I.T. Dept. reviewed this request? <br />Department Priority Ranking: Highest Request Number: (Finance Use) <br />