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CO L BASIN MINE COVER SAMPLING <br /> Old Refuse Pile Sampled August 8, 1989 <br /> Seeded 1977-1985 <br /> Cover Statistics <br /> Average Vegetative Cover 34.2% + 3.2 (90% C.I. ) <br /> N = 10 <br /> S = 7.33 <br /> N min (10/90) = 13 <br /> Perennial Grasses % Cover % Relative Cover <br /> Bromus inermis 16.8 49.1 <br /> Festuca spp. 3.4 9.9 <br /> Poa spp. 3.0 8.8 <br /> Dactyl is gl omerata 2.4 7 .0 <br /> Phleum pratensis 1 .6 4.7 <br /> Agropyron i ntermedi um 1 .0 2.9 <br /> Agropyron smithii 0.8 2.3 <br /> Agropyron trachycaul um 0.2 0.6 <br /> Perennial Forbs <br /> Medicago sativa 2.0 5.8 <br /> Achillea lanulosa 1 .2 3.5 <br /> Trif olium spp. 0.6 1 .8 <br /> Penstemon strictus 0.4 1 .2 <br /> Astragal us ci cer 0.4 1 .2 <br /> Melilotus officinalis 0.2 0.6 <br /> Shrubs <br /> Symphoroca.,pos oreophi 1 us 0.2 0.6 <br /> Litter 24.2 <br /> Rock 8.8 <br /> Coal 6 .0 <br /> Total Vegetative Cover 34.2 <br /> Total Ground Cover 58.4 <br />