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<br />-6- <br /> <br />actual installations in ditches and ponds, several additional activities <br />have been started that will assume increasing importance as the develop- <br />ment and research work enters its final stages. <br />I. Assistance~ contractors -- During the past year, project work <br />was accomplished with 3 clay contractors (849, S28, 844). This assistance <br />consisted of: (1) help in planning development of clay deposit so as to obtain <br />advantages of air-drying and proper sizing and uniformity of produced clay <br />material, and (2) help in planning and installing clay materials in leaky ditches <br />and ponds. <br />2. Specifications -- Cooperative activities -- pointed toward the <br />eventual development of clay sealing specifications--have been initiated <br />with the State Agricultural Soil Conservation office and with the ABC Com- <br />mittees in Chaffee and Fremont Counties where cost-sharing for bentonite <br />sealing work has been allowed. <br /> <br />DISCUSSION OF INlTJAL RESULTS <br /> <br />To produce satisfactory sealing results with clays in canals and <br />reservoirs, both the procedure and the clay material must ''fit'' the condi- <br />tions of the site. <br /> <br />Site Conditions <br />- <br /> <br />A comprehensive evaluation of canal and reservoir conditions in <br />the District area has not been completed, but for development purposes, <br />several generalizations seem pertinent. <br />Area West of Pueblo -- In this area of the District, the canals are <br />-- - <br /> <br />relatively steep and ,fast , the soils commonly rocky or gravelly, and the <br />seepage losses from both canals and ponds, in many instances, are high. <br /> <br />1038 <br />