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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />I. GENERAL <br /> <br />This Preliminary Engineering Report has been prepared by the Town of Minturn, with assistance <br />from the Town's engineering consultant, Merrick & Company, in support of an application to <br />the Rural Economic and Community Development Administration to provide funding for <br />improvements to be made to the treated water distribution system serving the Town of Minturn. <br />The proposed water system improvements are needed to address existing inadequades in fire <br />protection service to several areas within the ToWn and to boost normal system pressures to a <br />level which satisfies State of Colorado design criteria. <br /> <br />The proposed water system upgrade has three distinct, but interrelated, elements. <br /> <br />1. New Water Storage Tank. A new storage tank is required at a higher elevation to replace <br />the existing 400,000 gallon tank, The existing tank is unable to support adequate fire <br />flow at required residual pressures because of its relatively low topographic elevation in <br />relation to the distribution system. The existing tank also has insufficient volume to <br />supply the full ~e volume needed for some of the higher calculated fire flows. Tank <br />replacement is further warranted because of the poor structural condition of the steel <br />tank and the suspected poor condition of its supply pipe. Existing steel tank walls have <br />corroded to the point of leaking, The wood stave pipe which supplies water to the tank <br />is believed 'to be in equally poor condition. Because the supply main passes beneath <br />several commercial structures, there is concern that possible leakage from the wood pipe <br />may pose problems to those buildings. Access to the main for repairs is difficult at best. <br />The proposed new tank will be larger (600,000 gallons) and will be located at a higher <br />elevation than the existing tank (120 feet higher). <br /> <br />2. New Pump Station, Minturn's water distribution system and the existing storage tank <br />are currently supplied by gravity flow from a treated water clearwell located at the <br />town's water treatment facility along Cross Creek. Because the new tank will be located <br />at a significantly higher elevation than the existing tank, gravity flow from the clearwell <br />to the new tank will not be possible, A new pump station will be required to boost <br />water into the new tank in response to the elevated hydraulic grade The new pump <br />station will include two primary pumps and one standby pump. The pumps will be <br />sized to provide pumping capacity in excess of the maximum day demand with just the <br />primary pumps operating, <br /> <br />3, Water Main Replacement. Approximately 1,200 feet of 12 inch wood stave pipe and 800 <br />feet of 6 inch wood main will be replaced with ductile-iron pipe, These pipe sections <br />represent the last remaining segments of wood pipe in the town's distribution system (in <br />addition to the existing tank supply line to be abandoned), Replacement of the wood <br /> <br />Town of Minturn Water System Upgrade Project, March, 1995 <br /> <br />2 <br />