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Executive Summary (continued) <br />In addition to having lower life cycle costs, gravity filters have other advantages over pressure filters <br />including: (1) more treatment options including aeration and detention without requiring another <br />pumping step, (2) water from the gravity filters does not go immediately into the distribution system, if <br />problems occur with treatment processes operators have time to react, (3) gravity filters are open to <br />view and access, and (4) gravity filtration systems have a greater amount of operational flexibility. <br />A gravity filter treatment plant is the recommended alternative due to the advantages it offers at a <br />comparable cost, <br />if the City elects to proceed with a water treatment plant project, the proposed project schedule could <br />be as follows: <br />Item Completion Date <br />Public Involvement July 2020 — September 2020 <br />Preparation of Plans October 2020 — February 2021 <br />Ad for Bid March 2021 <br />Bid Opening April 2021 <br />Construction Start May 2021 <br />Construction Complete December 2022 <br />If a water treatment plant project is pursued, immediate distribution water quality improvements <br />should not be expected. The water treatment plant will produce water free of iron and manganese; <br />however, it takes time for the iron and manganese deposits in the distribution system to dissipate and <br />overall water quality to improve. <br />FEASIBILITY STUDY -DRAFT RAMSY 154354 <br />ES-2 <br />