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<br />; <br /> <br />~~ <br /> <br />.. <br /> <br />(- <br />I.,. <br /> <br />'Ibpic <br /> <br />Priority <br /> <br />3 <br /> <br />In conjunction with the nonitorirlg wDrk, to <br />continue \<x:>rk on improved analytical detection <br />methodology. In large pcrrt the technology in <br />this area should become available from other <br />sources and the only costs which might be' <br />involved are those of hardware and technician <br />..suPfOrt, much of vlhich rrey re able to be <br />funded cooperatively. The application costs <br />for this ~rk shall be included with the <br />nonitoring strategy costs noted al::ove. <br /> <br />4 <br /> <br />The study of concentration phenomena should <br />be suprorted including the following aspects <br />of this research area: <br />a) chemical processes and equilibria, <br />b) physical processes and methods-fluxes <br />in the environment <br />c) biological concentra.tions and chemical <br />transforwation processes <br />This w::>rk is i..mp:)rtant in prediction of <br />localized concentrations and 1.'r1 develoFffient <br />of inproved ITDnitoring strategies. <br /> <br />" <br /> <br />5 <br /> <br />Effects of concentration processes, if these <br />occur, on processes vlhich are determined to <br />be nost sensi ti ve ;:s the presence of the <br />agent or its tran~ed prcx1ucts. This can <br />best be done in conjunction with nonitoring <br />which might go on in relation to on-going <br />weather m::dification programs. <br /> <br />. . <br /> <br />6 <br /> <br />A low level but continuing effort to evaluate <br />the potential for nucleating agents to(iPtentrate <br />the positive or negative effects of other rrater- <br />ial released to the environrrent. These can <br />include other metals, herbicides, pesticides <br />and known carcinogens, as examples <br /> <br />7 <br /> <br />Efforts should be rrade to sUPJ;Ort cooperative <br />silver ecological impact research efforts as <br />supported by the Photographic Manufacturing Assoc. <br />and the Silver Users Assoc. as examples, to assure <br />maximum utilization and cross-comparability of <br />data. <br /> <br />Approx. funding <br />level and duration <br /> <br />$30-40,OOO/ye.ar <br />over 6-10 years <br /> <br />perhaps $10-15,000/ <br />year over 5-7 years <br /> <br />$10-15,000/year <br />minimum (open- <br />ended) <br /> <br />Table 1 sumrcarizes the workshop meml::er 1 s assessrrent of rotential envirol1I1Y"'J1tal <br />effects of the various nucleating agents which can be considered for use in <br />weather m:x1ification programs. <br /> <br />(.~, <br /> <br />--- <br />, r <br />