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<br />I-" <br />C:J <br />CD <br />0') <br /> <br />In order to determine costs per ton of salt removed through the <br />treatment process, system costs are estimated. construction cost <br />of a surge storage reservoir is estimated at $121,000, based on <br />an excavation of 96,800 cubic yards at $1,25 per yard to provide <br />for 60 acre feet capacity, <br /> <br />Costs of a gravity filtration pretreatment system and reverse <br />osmosis tr~atment system are based on Estimating Water Treatment <br />Costs, VolUme 3, Cost Curves Applicable to 25000 to 1 mgd <br />Treatment Plants, August 1979, Municipal Environmental Research <br />Lab, U.S. Environmental Protection Agency, Cincinnati, Ohio, EPA- <br />600/2-79-1626. Costs are updated from an October 1978 cost base <br />to January 1991 dollars utilizing the Engineering News Record <br />Construction Cost Index (CCI) of 444.7 divided by the October <br />1977 CCI of 265,4 Construction Cost. <br /> <br /> <br />Construction cost of a gravity filtration system is estimated as <br />follows: <br /> <br />Installation of qravitv filtration system based on the maximum <br />process flqw <br /> <br />Construotion Cost <br />site work, interface piping @ 5% <br /> <br />Construction Cost <br /> <br />$ 151,320 <br /> 7,566 ";{ <br /> , <br />$ 158,886 <br /> <br />General contractor overhead and profit <br />@ 10% <br /> <br />15,889 <br /> <br />Subtotal <br /> <br />$ <br /> <br />174,775 <br /> <br />Engineering @ 10% <br /> <br />17,477 <br /> <br />'I <br />,~ <br /> <br />Subtotal <br /> <br />$ <br /> <br />192,252 <br /> <br />-~ <br />'-~ <br />~ <br />] <br />! <br />, <br />I <br />I <br />)j <br />:4 <br /> <br />11 <br /> <br />, <br />i~ <br /> <br />__-__.n-'.':~ J<;,(.. <br /> <br />