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. . "0014 5 ~ . . 18. Based upon tl 40-year amortization at 2-1/2 percent interest of' consbruotion costs allocated to municipal water, allowed annual power and O.M. & H. chnrges, and the system charge for project water, the ccst of municipal water to Colorado SpriI1&s under this plan is estimated at 19.6 cents per thousand gallons or $63.81 per acre-foot. Single-Purpose South Platte River 190 On t1>9 assumption that the two preceding plans would be developed in the order desoribed, t1>9 ultimate municipal water require- ment of 20.000 aore..feet by 1998, as estimated by the city, would laok 7,000 acrs..feet of fulfillment. On the further assumption that no additional suppli.es oould feasibly be developed on tile slopes of Pikes Peak, another source of' supply would be the Eleven Mile Canyon. Reservoir an the South Platte River, a faoility owned and operated by the Gity and oounty of Denver. 20. Under this plan, wat er would be purchased from the potential Blue-South Pla tte Project whi.oh w(Uld rephce, by transmountain diver- sion, the water taken from Denver's system. A system of pip"lines and tunnels would c1i vert water from the Eleven Mile Canyon Reservoir to a pumpiI1& station which would lift the water 240 feet. The pumpecl water would flow by gravity through a series of pipeline s and tunnels to a secom pump whiohwould lift it 815 feet. Another series of pipelines and tunnels would deliver the water to the .$out h Catamount Creek Reservoir of the Colorado SpriI1&s system. Power for the pump- ing operation would be obtained via a transmission li~ constructed from Colorado Springs. 21. Considerat ion hns been gi van to the possibility of utiliziI1& t1>9 fall of' the pumped water in the CatcmlOunt Creek water-pned for the production of hydroelectric energy to be used in the pumping operation. Preliminary computations indicate that the mnount of power so produced would be insufficient for the pumpiI1& operation and tho cost would ex- ceed the purcmse price of 5 mills per kilcwatthour which was assumed for this study. However, the possibility of' hydroelectric power pro- duction has not been eliminated or foreclosed. Future economic condi- tions might warrant such wJdro power production, and additions could be made to till system by the city without altering the basic diversion system. 22. Based upon an smortize,t ion of all construction costs over 40 years at 2-1/2 porcent interest, O.M. & R.. the annual cost of power for pumping, am the system price for municipal water of ~24 per aore-foot at the Eleven Mile Canyon Reservoir, the cost munic ipal water to Colorado Springs under this pla.n would be 25.7 cents for each thousand gallons or $83.75 per acre-foot. This price assUlWs that re- placement of water in the potential Two Forks Reservoir would satisfy all requirerrant s for reimbur sement to the oity and 'wunty of' IlE1nver for use of the Eleven Mile Canyon Reservoir. 'i1>9 adequ"cy of toot -assUlllP-l;;i~ can be tested only when negotiations have b43eIl consuIllllll-ted. ,. "