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<br />were distributed to individuals, organizations and agencies <br />in February 1975. <br /> <br />Recognition. - The goal of the recognition function is to <br />detect those Pacific winter storms that can be treated <br />successfully and whose precipitation will affect the study <br />areas. This involves development of a conceptual model <br />of the Sierra's orographic clouds and verifying the model's <br />accuracy. A forecast technology, capable of identifying <br />seedable situations before the fact, will be developed. <br /> <br />Treatment. - The primary goal of this function is to develop <br />a safe and effective means of treating suitable weather sys- <br />tems. This also involves the development of criteria for <br />suspending seeding when snowpacks become excessive or when <br />avalanches or flooding are probable. <br /> <br />Another goal is gaining an improved understanding of the <br />transport and diffusion of seeding material. <br /> <br />Evaluation. - The function of evaluation is to assess the <br />overall results of seeding in this particular setting. There <br />will be increased emphasis on learning more about extra-area <br />or downwind effects of seeding an inproving the understanding <br />of their mechanisms. <br /> <br />The evaluation process also will be applied to learn more <br />about ecological, environmental, social, legal, and economic <br />effects of cloud seeding. Human Ecology Research Services <br />has been awarded a contract to analyze public response to <br />the concept of augmenting Sierra water supplies by seeding <br />snow clouds. <br /> <br />Only preliminary studies and initial planning will be conducted <br />in fiscal year 1976. Decisions for subsequent detailed design <br />and project initiation will depend on analyses of research and <br />water requirements and review of environmental studies and the <br />impact statement. <br /> <br />1.4.2 North Platte Pilot Project. - The primary goal of the <br />North Platte project was appraisal of the degree to which <br />cloud seeding might increase the utility of a chain of reser- <br />voirs along the North Platte River downstream from the Medicine <br />Bow Mountains of Wyoming. The technological goal was to refine <br />the current technology in orographic snowfall augmentation and <br />determine if it could be applied successfully to the particular <br />small-area, short-duration storm situation of the ~edicine Bow <br />range. <br /> <br />1-21 <br />