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<br />U00731 <br /> <br />2.3.9 Ruedi Reservoir Water Rights <br /> <br />StateMod and the Cl Data Set were modified to include the actual Ruedi Reservoir refill priority date <br />of January 22, 1981 for 101,280 acre-feet (see Table 2). This modification was made in the C1 Data <br />Set Second Revision and included in subsequent C1 Data Set Revisions. <br /> <br />2.3.10 Electric Power Purchase and Sales Prices <br /> <br />Electric power purchase and sales prices were obtained from the Western Area Power <br />Administration \W AP A) for estimating the value of power generation foregone at Green Mountain <br />Reservoir as a result of the alternative investigated in this report and the Technical Memoranda <br />(personal communication from John Gierard, W AP A, to Leo Eisel and Bruce Rindahl, January 23, <br />2001). The sales prices were used in evaluating foregone power generation at both Shoshone and <br />Green Mountain Power Plants. The Executive Committee requested at the April 6, 2001 meeting <br />that the consultant submit the power rate schedules employed in the analysis to W AP A and to Excel <br />Energy for comment concerning the appropriateness of these rate schedules. for use in the analysis <br />and specifically concerning the' cost of replacement power. The consultant is still awaiting a <br />response to our :May 2001 request to WAPA andExcel Energy concerning this matter. <br /> <br />2.3.11 Hydropower Maintenance Schedules <br /> <br />The normal maintenance procedure for Green Mountain Reservoir is two outages (one for each <br />unit) of 4-5 weeks each. Typically one of the outages is in January and the other in March. The units <br />are not .normally worked on at the same time thus maintaining capacity to deliver through at least <br />one Unit. <br /> <br />Ruedi Reservoir hydropower facilities are generally maintained during a period of approximately <br />two weeks sometime during the year. There is no set schedule for when this two weeks will occur <br />during the year (personal communication with Phillip Harris, High Country Engineering, <br />September 12, 2001). <br /> <br />A typical maintenance schedule for Shoshone Power Plant will have Unit A out for January and Unit B <br />out for February. The C1 Data Set scenario, however, assumes that power generation facilities are <br />always available at full capacity and does not acknowledge these periods of downtime for maintenance. <br /> <br />II <br /> <br />In the analysis herein, the total kilowatt-hours of power generation were calculated for the C1 Data <br />Setline scenario and compared to the calculated total kilowatt-hours generated with the alternative <br />scenario. Therefore, the two scenarios were affected equally by the C1 Data Set data set's lack of <br />simulation of the hydropower maintenance periods. <br /> <br />Maintenance schedules for hydropower generation facilities at Green Mountain and Ruedi Reservoirs <br />and the Shoshone Power Plant were not incorporated into StateMod and the C1 Data Set because <br />hydropower generation is not specifically modeled by StateMod for Green Mountain and Ruedi <br />Reservoirs. Hydropower generation is, however, specifically modeled for the Shoshone Power Plant <br />in StateMod. Consequently, the maintenance schedule for the Shoshone Power Plant was included in <br />the C1 Data Set Third Revision and subsequent revisions. <br /> <br />P:\Data \GEN\CWCB\19665\Repon Phase 2\FinalRepon12,02\Finat Draft _Repon(l-03),doc <br /> <br />24 <br />