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<br />.... <br />.... <br /> <br />C:J <br />f"-' <br />--' <br /> <br />c' <br />~ <br />..">. <br />~ <br /> <br />The following table summarizes the estimated salinity concentration reductions, the number of evalu- <br />ation units where improvements would be made, and the estimated costs of the two options for both an <br />incremental plan formulation analysis and a cumulative plan formulation analysis. <br /> <br />Option 1 <br />(use of saved water) <br />Incrementa} Cumulativi <br />analysis! analysi~ <br /> <br />Effects on the Colorado River (average annual) <br />Reduction in salinity concentration at <br />Imperial Dam <br />Project features <br />Number of evaluatjon units studied for <br />improvement <br />Estimated costs (unit--$l,OOO) <br />Canal snd lateral lining <br />Interest during construction <br />Total <br />Anoual equivalent cost for 50 years at <br />7 3/8 percent interest <br />Operation, maintenance, and replacement <br />costs <br />Total annual cost <br />Average cost per mg/L of salinity con- <br />centrat ion reduction at Imperial Dam 569.40 962.00 <br />1/ Reaches of canals were included in this plan if individually they <br />than $1.0 million per mg/L reduction in concentration at Imperial Dam. <br />2/ Reaches of canals were included in this plan as long as the total <br />was equal to or less than $1.0 million per mg/L reduction at Imperial Dam. <br /> <br />3.94 <br /> <br />6.07 <br /> <br />8 <br /> <br />16 <br /> <br />26,968 <br />994 <br />27,962 <br /> <br />70,900 <br />2,528 <br />73,428 <br /> <br />2,122.30 <br /> <br />5,577.60 <br /> <br />121. 20 <br />2,243.50 <br /> <br />267.00 <br />5,844.60 <br /> <br />Option 2 <br />(nonuse of saved water) <br />Incrementa} Cumulativj <br />analvsis1 analvsi~ <br /> <br /> 7.33 9.58 <br /> 11 19 <br />45,790 85,864 <br /> 1,688 3,130 <br />47,478 88,994 <br /> 3,603.50 6,754.60 <br /> 192.80 342.40 <br /> 3,796.30 7,097.00 <br /> 517 . 90 740.80 <br />had a cost equal to or less <br />average cost for the plan <br />