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<br />. <br /> <br />DOWNSTREAM CHANNEL IMPROVEMENTS <br /> <br />A summarized cost estimate for the channel improvements <br /> <br /> <br />downstream from Lowry Air Force Base is shown in table l4. <br /> <br />Table l4 <br />Cost Estimate <br />Downstream,Channel Improvements <br /> <br />First Costs <br /> <br />Direct costs: <br />Open channel <br />Culvert <br />Flood proof ing <br />Land <br />Contingencies <br /> <br />$ 367,000 <br />3,973,000 <br />409,000 <br />98,000 <br />727,000 <br /> <br />Total Direct Cost <br /> <br />$5,574,000 <br /> <br />Indirect costs: <br />Engineering and design <br />Supervision and administration <br /> <br />727,000 <br />364,000 <br /> <br />Total First Cost <br /> <br />$6,665,000 <br /> <br />Annual Costs <br /> <br />Interest and amortization !/ <br />Operation, maintenance, and <br />replacement <br /> <br />$ 475,000 <br /> <br />5,000 <br /> <br />Total Annual Cost <br /> <br />$ 480,000 <br /> <br />l/ lOa-year period of analysis at 7.125 percent interest <br /> <br />. <br /> <br />54 <br />