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• <br />• <br />The April 2004 Comprehensive Water System Plan calls for ground storage of one <br />million gallons at the two proposed treatment plants based on the 2030 population. <br />Based on the ultimate population it is now recommended that a ground service reservoir <br />totaling 1.5 to 2 0 million gallons be constructed at the water treatment plant site. <br />Construction of a 1.5 to 2 0 million gallon reservoir at the proposed treatment plant <br />brings the total City storage to 3.5 to 4.0 million gallons. <br />Integration of a water treatment plant into the City water system will require the <br />installation of a high service pump station to supply finished water from the treatment <br />plant. The existing wells will supply raw water to the treatment plant. Finished water <br />from the treatment plant will be stored in the 1.5 to 2.0 million gallon reservoir. The <br />1.5 to 2 0 million gallon reservoir will supply finished water to the high service pump <br />station. The high service pump station then supplies finished water to the distribution <br />system and the elevated storage tanks. <br />To effectively utilize electrical energy and minimize electrical demands and costs, three <br />pump sizes have been selected for the high service pump station to match anticipated <br />ultimate water demands. A standby generator will allow the city to provide water to the <br />distribution system and elevated storage tanks during a power outage, and obtain <br />electrical service on the load management rate schedule. The load management rate <br />schedule allows the City to operate the standby generator during peak electrical demand <br />periods and allows reduced electrical rates as compensation. <br />Cost Estimates: <br />The cost estimate below is based on two types of water treatment, gravity filters and <br />pressure filters. Gravity filters function by allowing water to flow vertically through a <br />media such as sand combined with chemical treatment to remove particulates. Pressure <br />filters work in the same manner as gravity filters except that the raw water flows <br />horizontally through cylindrical pressure vessels. Pressure filters costs are slightly less <br />as reflected in the cost summary below, because they require less equipment and space <br />for backwash activities. <br />Raw watermain costs below reflect the additional piping necessary to move raw water <br />from the wells to the treatment facility. The East facility raw watermain costs are <br />slightly more due to distance to the existing wells. <br />4 <br />