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<br />~ ~ \-.0 <br />'r.J~ ,^'J-- <br />. ,,,,' . ~v, <br />,~" \, \, <br />\ <br /> <br />. <br /> <br />APPENDIX A <br /> <br />Maximum Use Level Computation for the Primary Season <br /> <br />Potential river use during the primary season (May 10-September 10) <br />has been computed based on group size, daily launch limits and average <br />trip duration. It should be noted that these figures represent maximum <br />potential use and that actual use is expected to be lower, especially in <br />the noncommercial category. Low use season visitation has not been computed <br />because there is insufficient data for projecting demand for this period. <br /> <br />Comme.rcial <br />Launches above Rainbow Park: <br />(2 trips per day x 72 days) + (3 trips per day x 52 days) = 300 trips <br />300 trips x 22 passengers average per tripl = 6,600 passengers <br />6,600 passengers x 3.5 days average per trip = 23,100 user-days <br /> <br />Rainbow Park launches: <br />2 trips per day x 124 days = 248 trips <br />248 trips x 25 passengers maximum per trip = 6,200 passengers <br />6,200 passengers x'l day per trip = 6,200 user-days <br /> <br />Total = 29,300 user-days (plus crew) <br /> <br />Noncommercial <br /> <br />Launches above Rainbow Park: <br />(2 trips per day x 72 days) + (3 trips per day x 52 days)=300 trips <br />300 trips x 25 people maximum per trip = 7,500 people <br />7,500 people x 3.5 days average per trip = 26,250 user-days2 <br /> <br />Rainbow Park launches: <br />2 trips per day x 124 days = 248 trips <br />248 trips x 25 people maximum per trip = 6,200 people <br />6,200 people x 1 day per trip = 6,200 user-days <br /> <br />Combined <br /> <br />Total = 32,450 user-days <br />Total = 61,750 user-days (plus crew) <br /> <br />1 <br />Commercial' us~ was calculated on an average of 22 passengers per trip <br />because concession allocations will not allow commercial outfitters to <br />carry the maximum group size (25 passengers) on every trip. <br /> <br />2Noncommercial use was cal~"lated on a maximum oj 7<; people per trip. <br />However, average group size for noncomm~L~lQl trips is exoected to-he <br />in the range of 15 to 17 people. Reduced group size combined with a <br />significant percentage of cancellations is expected to significantly <br />reduce actual use. Noncommercial use includes an estimated 1,662 user <br />days reserved for the special populations program. <br /> <br />20 <br />