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<br />This final method of diversion is recommended because of its relatively low <br />cost. Also, by using the existing outlet, a costly and risky dam bore can be <br />avoided. <br /> <br />Three types of water facil it ies would be necessary fOl' the opel'ation of the <br />proposed NCOl,A. These include a treatment plant, storage reservoirs, and <br />transmission lines. <br /> <br />The treatment plant should logically be located as close as possible to <br /> <br /> <br />Flatiron Reservoir. This will allow a larger available pressure head since <br /> <br />the elevation drops rapidly downstreilln from Flatiron. Also, the potential <br /> <br />service area is maximized by locating the treatment plant near the Reservoir. <br /> <br />A thorough investigation would be necessary to select an exact treatment <br />process. However, there are several treatment plants currently operating <br />which use Big Thompson Project raw water and the treiitment p"ocesses employed <br />are all similal'. The NCDWA plant would probably require a similat' process <br />which consists of microstr'ainers to remove algae, pre-chlorination, chemical <br />treatment and softening, a contact basin til ptomote flocculation, mixed media <br />filtration and post-chlorination. <br /> <br />The construction of the treatment p'fant would be phased in order to keep <br />initial construction costs at a minimum. Phase I would be sufficient through <br />the year 1990 with a capacity of 48 f1GO. Prior to 1990, Phase II ~Ihich \10uld <br />raise the daily plant production by 55 ~:G would have to be const.'ucted in <br />order lc adequately serve the system through the year 2000. In a similar <br />mann".', it is recn,illllcndcd that the plant capacity be incl'cased in 10 year <br />incl'cillcnls hcginninlJ in the year 2000. The 10 year intervals ~lOuld pl'evcnt <br />excess plant Calhu:ity from gnin~J unused and also progressive innovations in <br />equip!lIent and procc~ses could he illrorpordted into the adllition. <br />13 <br /> <br />. . <br /> <br />,I <br />