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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />TABLE VII-l <br />PHASE A <br />UNIT PRICES" <br />(June 1977) <br /> <br />TABLE VII-2 <br />PHASE A <br />ANNUAL UNIT COSTS* <br />FOR OPERATION AND MAINTENANCE <br /> <br />Cost ($) <br /> <br />Unit <br /> <br />Item <br /> <br />Type of Flood Conveyance <br /> <br />Floodplains, undeveloped basin <br /> <br /> <br />Floodplains, developed basin <br /> <br /> <br />Grass-lined channel <br /> <br /> <br />European channel <br /> <br />Concrete-lined channel <br /> <br /> <br />Closed conduit <br /> <br />CONCRETE - Structural <br />Vertical walls <br />European-Type walls <br />Slab <br /> <br />c.y. <br />c.y. <br />c.y. <br />c.y. <br /> <br />200 <br />190 <br />100 <br />75 <br /> <br />EARTH WORK <br />Excavation <br /> <br />c.y. <br />c.y. <br />c.y. <br />c.y. <br />c.y. <br /> <br />1.50 <br />1.25 <br />1.00 <br />2.00 <br />3.00 <br /> <br />3.00 <br />0.90 <br /> <br />- Urban <br />Rural <br />Ponds <br />Closed Conduit <br />Structural <br /> <br />PI acemen t <br /> <br />- Structural <br />Dam Embankment <br />(Excavation & Fill) <br />- Placed <br />Gabion <br />Grouted <br />Dumped <br /> <br />c.y. <br />c.y. <br /> <br />Annual O&M Cost <br /> <br />0.20/1. f. <br />0.30/1 . f. <br /> <br />I ,3501 acre of r.o.w. <br />1,350/acre of r.o.w. <br />950/acre of r.o.w. <br />950/acre of r.o.w. <br /> <br />c.y. <br />c.y. <br />c.y. <br />c.y. <br /> <br />35 <br />60 <br />40 <br />10 <br /> <br />Note: Annual channel O&M is based upon figures obtained from the City <br />of Englewood resulting from the 1973 flood on Big Dry Creek <br />and modified to apply to South Lakewood Gulch. These annual <br />costs compare with other current UD&FCD Phase A project costs <br />(Mcintyre Gulch and Sloans Lake). <br /> <br />Ri prap <br /> <br />GRASSING - Natural - seeded <br />B I ueg rass - seeded <br /> <br />acre <br />acre <br /> <br />500 <br />1,000 <br /> <br />CLEANUP <br /> <br />acre <br /> <br />1,000 <br /> <br />RIGHT-OF-WAY ACQUISITION <br /> <br />acre <br /> <br />15,000 <br /> <br />* Prices have been updated for Phase B preliminary design and are <br />presented in Table V-2. <br /> <br />,~ Prices have been updated for Phase B pre! iminary design and ar.e presented <br />in Table V-I. <br /> <br />VII-2 <br />