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<br />I <br />I <br /> <br />SHEET 7 DISCUSSION <br /> <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />The improvements shown on this sheet consist of construction of a storm <br /> <br /> <br />sewer with a 5-year capacity of approximately 256 cfs. The upper end of the <br /> <br />proposed system should be tied into the manhole at the intersection of Arapahoe <br /> <br /> <br />Road and Downing Street. The alignment of the proposed system can be similar <br /> <br />to what is shown on Sheet 7 with the existing 15-inch RCP providing additional <br /> <br /> <br />capacity of approximately 7.0 cfs (Reference-9). If there are less utility <br /> <br /> <br />conflicts, the existing 15-inch RCP can be removed and the trench utilized for <br /> <br /> <br />the proposed system. <br /> <br />Cost of Proposed Improvements <br /> <br />A. Storm Sewer <br />I. 60" RCP (1800 L.F.).... ....................... .................. .$252,000 <br />2 . 63" x 98" RCP (250 L. F . ) . .. . .. .. .. . .. .. . . . .. . . .. .. .. . .. .. .. .. . . .. $ 87, 500 <br /> <br />3. Manholes (5)........... ................................. .........$ 12,500 <br /> <br />4. Inlets (8).......................................................$ 16,000 <br /> <br />Contingency (15%)................... <br /> <br />7,000 <br /> <br />I <br />I <br />I <br />I <br />I <br /> <br />B. Utility Relocation (2050 L.F.).......................................$ 12,300 <br /> <br />SUB-TOTAL $380,300 <br /> <br />Legal and Administrative (5%)....... 19,000 <br /> <br />I <br />I <br /> <br />SUB-TOTAL $456,300 <br /> <br />Engineering (15%)................... 68,400 <br /> <br />TOTAL CONSTRUCTION COST $524,700 <br /> <br />C. Annual Operation and Maintenance.....................................$ 2,100 <br /> <br />I <br />I <br />I <br />