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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 />The critical section of the canal is that portion between the siphon and <br /> <br />the Green Ridge Glade turnout, where the capacity is only 550 cfs. In this <br /> <br />section, no capacity will be available to the City up to 16.1 percent of <br /> <br /> <br />the time in July, and some constraints will exist during the four month <br /> <br /> <br />period. The section prior to the siphon would only be constrained during <br /> <br /> <br />June and July, but to a lesser degree than the constraints after the <br /> <br /> <br />siphon. <br /> <br />Capacity constraints were reflected in the deficit estimates by reducing <br />the rate of diversion to storage during those months when potential <br />capacity constraints were present. The rate of reduction was set equal to <br />the percentage of time calculated above. <br /> <br />3.3 COLORADO-BIG THOMPSON AND WINDY GAP PROJECTS OPERATION <br /> <br />The CBT and Windy Gap projects were modeled in the Phase I study as <br /> <br /> <br />single-storage component systems with storage on the West Slope and demands <br /> <br /> <br />on the East Slope. Lake Granby, Grand Lake, Shadow Mountain Reservoir, and <br /> <br />Willow Creek Reservoir were operated as one storage facility for both <br /> <br /> <br />projects with East Slope demands being conveyed through the Adams Tunnel. <br /> <br /> <br />Operation of East Slope storage facilities for either project was not <br /> <br /> <br />explicitly considered in Phase I. Total project demands in Phase I were <br /> <br /> <br />estimated by calculating the City's needs each month and assuming that <br /> <br /> <br />demands by other shareholders were directly proportional. This proportion <br /> <br /> <br />was based on the ratio of project units owned by the City to those owned by <br /> <br /> <br />all other shareholders. Minimum demands were also placed on these projects <br /> <br /> <br />to ensure that project withdrawals occurred each year. <br /> <br />Since the completion of Phase I, the NCWCD has committed to operating CBT <br />and Windy Gap as a "unified" system. While not defining the exact manner <br />in which the two projects would be jointly operated, the NCWCD has made a <br />commitment to provide the use of existing CBT storage and conveyance <br />facilities to the Windy Gap project, provided that delivery of CBT water to <br />Front Range users is not adversely affected. <br /> <br />3-11 <br />