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<br />"', <br /> <br />..,. <br /> <br />. ~ <br /> <br />. <br /> <br />. <br /> <br />. <br /> <br />3,3 <br /> <br />six inches or more of snowfall at the sampling sites, Five sampling <br />expeditions have been assumed in developing the budget, If the number <br />of expeditions has been less than five on 9 January 1987, DRI will <br />continue this sampling effort provided a coordinated seeding program <br />is maintained by the BuRec, The snowpack sampling will be accom- <br />plished in the manner of Stone and Warburton (1981), The snowfall <br />will be sampled at 12 sites (see Table 1), Nine of the sites are <br />remote and will be visited by helicopter, In line with previous dis- <br />cussions with BuRec personnel it is assumed that the cost of providing <br />this helicopter support will be paid directly by the BuRec, Three of <br />the 12 sites will be adjacent to all~eather highways accessible by <br />4-wheel drive vehicles followed by over-snow travel, The profiling <br />equipment to be used has been described previously (Stone, 1983), and <br />provides a 2 em depth resolution of the snowpack. All the sampling <br />will be done as soon as possible after storms in order to minimize <br />the effects of snowpack settling, Sampling immediately after a storm <br />results in better depth- and thus time-resolution of the snowpack and <br />this improves the chemical analysis, <br /> <br />B. Laboratory Analyses and Data Processing: <br /> <br />The laboratory silver analyses of the snow samples will be con- <br />ducted continually throughout the project to ensure a timely reporting <br />of the results, The analyses will be completed by about 30 April 1987, <br />The analyses will be made in the two DRI clean room laboratories in <br />Reno, One contains a laminar flow work station adjacent to a dual- <br />beam flameless atomic absorption spectrophotometer, This spectro- <br />photometer is housed in filtered Class 100 air and uses an automated <br />