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<br />Supply <br /> <br />15C1 <br /> <br />The design project produces 78,000 <br />acre-feet of indirect irrigation water <br />deliveries, including the inilia142,200 <br />acre-feet of increased iITigation pump- <br />ing and an additional 35,800 acre- <br />feel of reuse of return flows and <br />conveyance losses of 127.800 acre- <br />feet. <br /> <br />Costs <br /> <br />The 1980 cost estimate for construc- <br />tion of the design project is $110 <br />million. The interest cost during <br />construction would be $46 million. <br />The annual costs for operation, <br />maintenance, and replacement would <br />be $700,000, <br /> <br />Impacts <br /> <br />The investment required would total <br />$156 million in construction costs <br />and interest during construction. The <br />net economic benefit would be -$56 <br />million, <br /> <br />Impacts on fish and wildlife would <br />be similar to those of Alternative 111- <br />A. The estimated impacts on fish <br />would represent a small positive <br />change from existing conditions. The <br />estimated impacts on wildlife would <br />represent a moderate negative change <br />from existing conditions, <br /> <br />9 <br />