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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 />CHAPTER V <br />COSTS OF ALTERNATIVES <br /> <br />This chapter presents the construction costs of the various alternatives <br />evaluated for improving the Town's water supply system and solving the <br />nitrate problem. Operations and maintenance costs also are included for <br />the alternatives presented. <br />A, Construction Costs <br /> <br />Table V-I presents a summary of estimated costs based on 1977 unit <br />prices for the three most feasible alternatives. The first cost <br />estimate is for the new well system alternative which includes as options or <br />staged construction of improvements to the di~tribution system and expansion <br /> <br />of the storage to 100,000 gallons. The last fwo alternatives are two <br /> <br />different sized reverse osmosis systems with necessary treated water <br /> <br />storage depending on the capacity of the RO system. Because of the large <br /> <br />increase in operations and maintenance costs of the RO systems. the present <br />worth of the increased cost is included as a comparison of alternative costs, <br />An itemization of the costs of new facilities for the recommended new <br /> <br />well alternative including new distribution pipes and storage are as follows: <br /> <br />Alternate 1 <br /> <br />Phase A - New Well System <br /> <br />Construction of two wells <br />Meters, pump house, valves, etc. <br />Pumps (100 gpm) 7~ Hp (2 each) <br />Electrical System and Controls <br />Chlorinators (2) <br /> <br />$ 2,000 <br />5,000 <br />4,600 <br />10,000 <br />2,400 <br />$24,000 <br />$70,600 <br /> <br />Sub-Total <br /> <br />Transmission main (6" PVC) (9100 ft+) <br />(@ $7.76/ft,) - <br /> <br />27 <br />