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<br /> <br /> <br />leaf area within the cottonwood canopy, total leaf, twig and seed production, <br />condition of individual tree crowns, xylem-water potential pressures and <br />salxaood basal-area/leaf area relationships. We will determine what aspects of <br />the water table are responsible for the observed and measured deterioration. <br />standard statistical procedure will be used in all analyses to provide an <br />accurate and unbiased evaluation of this data on the health of cottonwood <br />trees. <br />MATERIALS <br />Woxlen screeing, spherical densiometers, dbh tape, dendrometer bands, <br />weighting arcs drying scales and ovens, pressure bomb, ground water well <br />casings and backfill material. The eight ground water wells in the grassland <br />uplands should be installed by the sand mining applicant using a drill rig. <br />All other wells will be installed by hand. <br />BUCGET <br />Personnel/ hours 1~?r year <br />CP-Prirn~ipal Investigators <br />Michael Smtt @$19.25/hour 1.5 months per year $5,197.50 <br />David G~cper @$19.25/hour 1.5 months per year $5,197.50 <br />Student Field technican, 4 months full time, <br />B mo 1/2 time @$7.50 $10,800.00 <br />Field s'.~pplies, well casings etc. $1,000.00 <br />Approximate total first year cost $22,195.00 <br />4 <br />