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<br />daily Jcmand~, the sy~tem would be gro~sly inadequate during the summer <br /> <br />months. If the t,-ansmission line was sized to supply the peak hour demands, <br /> <br />the pipes would be much larg(~r than are necessary to supply maximum day <br /> <br /> <br />demands and the cost of the system \~ould be great 1y increased. In addit ion, <br /> <br />the fu 11 capac ity of the line ~:oul d be ut i 1 i zed for on ly a fClt hours each year <br /> <br />near the design year. During the early years of service, the capacity of such <br /> <br />a sys tcm ~:oul d neve'- be approached. <br /> <br />Because the source of I-,ater is at a higher" elevat ion than any of the delivery <br /> <br />points in the system, it is possible to ta::e advantage of gravity flow hy- <br /> <br />draulics to provide pressures for distribution of the water. The water source <br /> <br /> <br />is at an elevation of 5,420 feet and the elevations of delivery points range <br /> <br />from 5,200 feet at Loveland to 4,630 feet at the east CI'IOIO connection. This <br /> <br />large elevation difference makes it possible to deliver the treated water to <br /> <br /> <br />every member, wi th except i on to the CHCliD and the L TVI!D, without the use of <br /> <br />pumps. These two members cannot be served by gravity flow because the NCDl-:A <br /> <br />must deliver water into theil" I"espective systems at higher" pressures than the <br /> <br /> <br />NCDHA systelll can supply. These high pressures are due to the fact that the <br /> <br />treatment plant \.,h i cll . serves both the CHCl\O and the L TV~:D is located at Ca:-ter <br /> <br /> <br />Lake. The I~ater surface elevation in Cad.er Lake is in excess of 200 feet <br /> <br /> <br />above the water surface elevation of Flatiron Reservoir which is the proposed <br /> <br />water source for the tJCDHA system. <br /> <br />The large difference in el~vatiun within the NCDWA system causes some minor <br /> <br />prohll'H1S as well as p,'oviding a highly ecuIllJmical meLhod for water t.'ansmission. <br /> <br />The t",lllsmission I illl'~ wnuld have to have very thick walls in ol"der to ~lithstand <br /> <br />the h i!lh prcssures dl'vc lop,'d by the e levat ion d if' el"cnce _ These th i ck wa lled <br /> <br /> <br />pi pes 1.'0111 d dr i VI? np lhc co~ t of the project subs tant i ally. It is, therefore <br /> <br />8 <br /> <br />. , <br />