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<br />and nontreated ratios, as well ~s simple target treated to <br /> <br />non-treated ra t ios. Both opera t iional and resea rch proj ect s <br /> <br /> <br />use radar in evaluation by comparing radar returns from treated <br /> <br />and untreated areas. Cloud physic~ data comparisons are also <br /> <br /> <br />made. <br /> <br />1.6 How to Initiate a Cloud Seeding Project <br /> <br />In the past engineers have beQome involved in the decision-- <br />making process leading to implementation of cloud seeding <br />projects, and undoubtedly this will become more frequent in <br />the future. The last section, Section 6, "How to Implement <br />a Cloud Seeding Program" tells h~w to handle this situation. <br />It leads the reader through the ~teps from feasibility to <br />design study and evaluation plan. The elements of program <br />control and management are discussed. <br /> <br />Initial steps toward implemen~ing a seeding program include <br />consideration of the need for au'gmented precipitation, how <br />it would be used, and alternati~e/approaches to satisfying <br />the need. Basic inputs at this ~tage come from the people <br />involved and/or their represent~tives, and from literature <br />on the state of the art, such as this series of chapters. <br /> <br />A feasibility study is desirable and should include a <br />clear statement of all ob,Jectiveis of the proposed project, <br />covering technical, economic, sOQial, legal and environmental <br />factors. It should clearly ide~tify the source or sources <br />of financial support. Advice by. certified weather modifica- <br />tion managers should be sought for'design work and in forming <br />some assessment of potential be~efits. Consideration should <br />be given to how project results are to be evaluated. <br /> <br />8 <br />