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1. Sample plant cover in each affected type at an intensity <br />sufficient to attain 908 confidence and 108 accuracy (p=0.10; <br />d=0.10). <br />2. Sample herbaceous plant production with affected shrubland <br />communities at an intensity sufficient to attain 808 confidence <br />and 108 accuracy (p=0.20; d=0.10). <br />3. Select a reference area in proximity to the site which would tend <br />to typify the topography and exposure of the tailings disposal <br />terraces in the post-mining phase. <br />4. Sample both cover and production within the reference area at an <br />intensity sufficient to attain 908 confidence and 108 accuracy <br />(p=0.10; d=0.10). <br />Appoximate centerlines were described within each type.. Along <br />each centerline SOm transects were placed randomly. The point frame method <br />was used, with 10 points spaced at 15m intervals on the frame. <br />Measurements were taken at Sm intervals on each transect line, for a total <br />•• of 100 points per transect. Hits were recorded by plant species, or as <br />litter, bare ground, or rock. Where shrubs were encountered, shrub canopy <br />cover, as well as shrub ground cover, were measured by reference to the <br />frame. Tree canopy cover was estimated by upward extension of the points. <br />Transects were established until sample adequacy was attained by reference <br />to the following formula: <br />nmin = s2 z2/(d x)2 <br />Where: <br />nmin = minimum number of samples required <br />s = sample standard deviation <br />z = confidence level <br />d = amount of reduction it is desired to detect <br />x = sample mean <br />2.04-45 (Revised 09/13/88) <br />