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<br />. <br /> <br />UPSTREAM DRAINAGE IMPROVEMENTS <br /> <br />A summarized cost estimate for the drainage improvements <br /> <br />upstream from Lowry Air Force Base is shown in table 15. <br /> <br />Table l5 <br />Cost Estimate <br />Upstream Drainage Improvements <br /> <br />First Costs <br /> <br />Direct costs: <br />Dayton Detention Pond <br />Kentucky Drive Drainage System <br />South Dayton Street Drainage System <br />Pond A-B Improvements <br />East Alameda Avenue - Pond A-B Drainage <br />East Alameda Avenue - Storm Drain <br />Fairmont Drive Area Drainage System <br />Contingencies <br /> <br />$ 766,000 <br />l53,OOO <br />513 ,000 <br />132,000 <br />577,000 <br />l58,OOO <br />l52,OOO <br />340,000 <br /> <br />Total Direct Cost <br /> <br />$2,79l,OOO <br /> <br />Indirect costs: <br />Engineering and design <br />Supervision and administration <br /> <br />370,000 <br />l59,OOO <br /> <br />Total First Cost <br /> <br />$3,320,000 <br /> <br />Annual Costs <br /> <br />Interest and amortization ~/ <br />Operation, maintenance, and <br />replacement <br /> <br />$ 237,000 <br />13,000 <br />$ 250,000 <br /> <br />I <br /> <br />Total Annual Cost <br /> <br />~/ laO-year period of analysis at 7.125 percent interest <br /> <br />55 <br /> <br />. <br />