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<br />. <br /> <br />. <br /> <br />utilities in the Four Corners Area would be made for the use of saline <br /> <br />water withdrawals. <br /> <br />Assuming Congress authorized construction of the unit 1n 1985, <br /> <br />construction of the unit could begin in 1989. Monitoring of system salt <br /> <br />loads would continue throughout advance planning and during and after <br /> <br />construction to determine effectiveness of the plan. <br /> <br /> Stage I Stage II <br />Concrete Combining <br />pipe and Selective canals and Saline <br />canal canal selective water <br />lining lining lining reuse <br /> <br />EFFECTS ON THE COLORADO RIVER <br />( average annual) <br />Decrease in salt load (tons) 53,000 40,000 43,000 60,000 <br />Reduction in salinity at <br />Imperial Dam (mg/L) 5.3 4.0 4.3 6.2 <br />PROJECT FEATURES!/ <br />Pipe (miles) 27 37 <br />Cana 1 and latera 1 lining (miles) 13 32 28 <br /> <br />ESTIMATED COSTS (millions) <br />Storage, conveyance, and <br />treatment <br />Canal and lateral lining <br />Pipe <br />Miscellaneous features <br />Interest during construction <br />Total <br />Annual equivalent cost for 100 <br />years at 7-3/8 percent <br />Power <br />Operation, maintenance, and <br />replacement <br />Total annual costs <br />Cost per mg/L reduction at <br />Imperial Dam $.736 $.328 $.326 $.969 <br />l! Stage II would include project features such as a diversion dam, <br />storage reservoir, and pumping plants. <br /> <br />SUMMARY SHEET <br /> <br />$5.9 <br />37.5 <br />7.5 <br />1.9 <br />$52.8 <br /> <br />$3.9 <br /> <br />$3.9 <br /> <br />III <br /> <br /> $39.9 <br />$16.5 $17.5 <br /> 22.7 <br />.6 .6 13 .8 <br />$17.1 $18.1 $76.4 <br />$1.26 $1. 34 $5.64 <br /> .20 <br />.05 .06 .17 <br />$1.42 $1. 40 $6.01 <br /> <br />001473 <br />