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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 />The elevated 55,000 gallon tank was constructed in 1930 by Chicago Bridge and <br /> <br />Iron. It is a Horton tank with a common 8-inch fill and discharge pipe. The <br /> <br />8-inch line has an 8-inch gate valve instal1ed in a valve pit at the base of <br /> <br />the riser pipe. Pressure readings indicate that the full water level in the <br /> <br />tank is approximately 115 feet above ground leve1. The tank has received <br /> <br />numerous mai~tenance and painting applications since construction. Since 1967 <br /> <br />the Town has been under a continuing maintenance contract with Maguire Iron <br /> <br />Preserving Co., Sioux Falls, South Dakota to inspect, repair, and paint the <br /> <br />tank every three years. The latest tan~ painting' was performed in the spring <br /> <br />of 1975 and was considered by the Council to be a sub-standard and poor quality <br /> <br />job. rue tank appears to be in relatively good condition and with protection <br /> <br />and maintenance can continue to give storage service for many years. The <br /> <br />155,000 gal10n underground storage tank is located immediately west of the <br /> <br />elevated tank as shown on Plate I. The tank is equipped with float controls <br /> <br />which operate well pump No.Js land 3. Water from the underground storage is <br /> <br />pU3ped to the elevated tank and the mains by a booster pump located in the <br /> <br />underground pit in back of City Hall. The booster pump is a Berkeley Hodel <br /> <br />No. H689GW centrifical pump with a 4" suction and a 3JJ discharge. The pump is <br /> <br />powered by a Gould century, 25 HP, 60 cycle, 3-phase motor, operating at 3500 <br /> <br />RPM direct drive. It is estimated that the pump will deliver approximately <br /> <br />550 gallons per minute at a total head of 140 feet. The pump is equipped <br /> <br />with suction and discharge valves .and is controlled by a Hercoid pressure <br /> <br />control. The pump discharge to the distribution system is unmetered. <br /> <br />As far as meeting fire flow requirements, the 155,000 gallon under- <br /> <br />ground storage cannot be included in the total storage capacity. In order <br /> <br />to include the underground storage, the pump system would have to be a <br /> <br />duplex-unit with an auxiliary power supply with automatic start-up controls. <br /> <br />Even then, the system might not be graded as completely "reliable" and a <br /> <br />-22- <br />