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right storage volume is assumed equal to seven days of the average daily snowmaking <br />delivery, 0.68 MGD, for a total raw water operational storage requirement of 15 ac-ft. <br />The Demand Side Model utilizes the above assumptions for meeting snowmaking <br />demands. <br />Brush Creek Metro Demand. Treated water is supplied to the Brush Creek <br />Metropolitan District by the District in accordance with agreement. The treated water <br />supplied to the Brush Creek Metro was accounted for, in general accordance with the <br />contractual agreement which calls for delivery of a maximum of 150,000 gallons per day <br />not to exceed 2 million gallons per month, in the Demand Side module as the average <br />daily demand by month. The average daily demand used in the model was determined <br />as a function of the average monthly deliveries based on 2003 — 2006 records provided <br />by the District. <br />Wildcat Ranch. During the irrigation season, the District has contracted to <br />deliver irrigation water to Wildcat Ranch from Snowmass Creek at a rate of 3.0 cfs from <br />the Christensen Ditch water right for as long as the Christensen Ditch is in priority, and <br />up to a maximum of 150 acre feet of consumptive use. Based upon our discussions with <br />the District, in practice the 2.0 cfs is provided any time the Christensen Ditch is in <br />priority, and is modeled as such. <br />Backwashing. The volume of water used to model backwashing of the <br />treatment system is a monthly percentage of plant production. The monthly percentage <br />is based on 2005 plant production and backwashing volumes provided by District <br />personnel. The water required for backwashing the system ranges from 0.9 percent in <br />September to 1.4 percent in April of the water treated for District use. <br />Brush Creek Water Supplies. Based on information provided by the District, it <br />is our understanding that due to the inferior water quality of Brush Creek, the District is <br />only able to utilize water from Brush Creek if it is used in conjunction with water obtained <br />from East Snowmass Creek or Snowmass Creek. Based on an examination of the <br />District's water production records, Brush Creek sources are estimated to produce 10 <br />Page 10 <br />