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I I I I I I I I I I I I I I I I I I I 5 collected from the nine sites visited -- two of the sites already having been established during the previous trip. Snowfall in these profiles covers storms 1-10 in the cases of sampling sites UTC - UTI and storms 8-10 at sites UTA and UTB. The third sampling trip was conducted March 10 through 13, 1983. A total of 274 samples were collected from the 18 sites visited. Ninety-five snow samples were collected from sites UTA-UTI covering snowfall from storms 11-19. Samples collected from sites UTK-UTS cover snowfall from the entire field season. The additional nine sites were selected in the ~arget area to increase the possibility of finding indium. This was done because after the second sampling trip the state operational program had been suspended for seve:ral reasons: including, above normal snowpack (130%); forecasted high stream runoff levels (-200%); and low reser- voir storage levels needed to contain the expected runoff (Minersvil1e -320%). It was decided, at this point, to continue releasing indium oxide only. Data for the indium mass versus water mass (scavenging) relationship could still be obtained by these continued releases of indium oxide. Also, these releases would still provide information about the program's targetting effectiveness. On the third expedition minor sample collection problE~ms were encountered when, arriving at sites UTB, UTD, UTH and UTI, the snow boards and stakes were found missing.