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<br />'fABLE 10 <br />SUMMARY OF ALTERNATIVE PLANS <br /> <br />TAIlLE H),CONTINUED <br /> <br />LOCATlO~ (I) <br />REACH REFERENCE <br /> <br />DESCRIPTlON <br /> <br />APPROXIMATE <br />COST (2) <br /> <br />LOCATlON(I) <br />REACH REPERENCE DESCRIPTlON <br /> <br />, <br />, <br /> <br />" <br />" <br /> <br />New bridge at Kenosha Road <br />Excavate cbannel from Burlington <br />Northern Railroad bridge to Coal <br />Creek <br />Improvement of Coal Creek Channel <br />from Boulder and Weld County <br />Ditch to Boulder Creek <br /> <br />$440,000 <br /> <br />APPROXIMATE <br />COST (2) <br /> <br />$266,000 <br /> <br />Ditch along downstream <br />side of Union Pacific <br />railroad. <br />Channel maintenance. <br />Replace Perry Street bridge. <br />Channel improvement - Perry <br />Street to Union Pacific railroad. <br />Conveyance improvements at Union <br />Pacific railroad bridge. <br />Channel improvement _ Cheesman <br />Street to Lower Boulder Ditch. <br />Dike along "est channel bank. <br />Floodplain regulation. <br />Replace Btiggs Stteet bridge and <br />rebuild road. <br />Channel improveme"t upstream and <br />downstream from Briggs Street. <br />Conveyance improvement at <br />Burlington Northern railraod <br />bridge. <br />Conveyance improvement at County <br />Line Road bridge. <br />Excavate channel around east side $I,094,aOO <br />of Westview Estates along the rail- <br />road to Ilestvie" Road, thennortl> <br />to Mineral Road. then alona the <br />.outh side of Mineral Road to Bouldcr <br />Creek, and construct a bridge at the <br />County Line Road cro~sing. <br />Ne" bridge at County Line ROll,d. $442,000 <br /> <br />, <br />, <br />2 <br /> <br />2, <br /> <br />Floodplain regulation. <br />FlOOd control reservoir. <br />Dike along Union Pacific <br />railroad. <br /> <br />2 <br /> <br />20 <br /> <br />2 <br />2 <br />2 <br /> <br />2, <br /> <br />" <br />2, <br /> <br />2 <br /> <br />" <br /> <br />, <br /> <br />2, <br /> <br />, <br />2 <br />2 <br /> <br />'" <br /> <br />" <br /> <br />2 <br /> <br />2b <br /> <br />J <br /> <br />J, <br /> <br />2 <br /> <br />" <br /> <br />, <br /> <br />" <br /> <br />, <br /> <br />" <br /> <br />-74- <br /> <br />, <br /> <br />4. <br /> <br />$ 35,000 <br /> <br />'" <br />(2l <br /> <br />Seel'lates 12 through 15 <br />A 20% contingency coat has been added to each item <br /> <br />$ 12,000 <br /> <br />~ 10.000 <br /> <br />B. Reach I-Upstrea..Li..itofthe Study to Perry Street <br /> <br />$339,000 <br />$47,000 <br /> <br />$ 15,000 <br /> <br />No improvements are presently ~n place in this reach. The flooded area <br />consists entirely of cultivated fields. Potential damages inClude loss of <br />topsoil and destruction of crops during major floods. <br /> <br />$162.000 <br /> <br />Protection of agricultural land does not justify structural improvements <br />to this teach. The potential flood damages to this area are common to all <br />agricultural land which borders Dlajor drainage"ays. Regulation" restricting <br />future development of this area are considered to be the most economical <br /> <br />$ 18,000 <br /> <br />plan. <br /> <br />As part of the analysis of the entire atudy area. a flood control <br />reservoir was considered "hich would reduce flood peaks to non-damaging <br />levels. A major reaervoir would be required for this alternative. For <br />example. a reservoir volume of approximately 3500 acre-fect ,"ould reduce the <br />lOO-year flood peak to 8000 cfs. Damages would still OCCur alo~g Coal Creek <br />and in the Town of Erie. Clearly, a detention reservoir of adequate size to <br />prev~nt flaod damages is not economically feasible. Previous studios (references <br />1 &6lhave considered flaodconerol storsge in the Coal Creek basin . Adetailed <br />di.cussion of thcse studies and their recommenddtion" ~" considered to be out- <br />side che ~cope of serv;cc~ for this scudy. <br /> <br />- 15 - <br />