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Table B-4. Sample Adequacy - Reclaimed and Reference Areas, Yoast Mine, SPL, Routt County, CO - 2016 <br />---ALL HIT COVER--- -- ALLOWABLE ALL HIT HERBACEOUS COVER3-- <br />Foliar Foliar <br />Cover Std. Cover Std. <br />AREA (%) Dev. N' N-mine (n-1) t (%) Dev. N' N-min (n-1) <br />Phase II BRB-2a 2016 <br />57.3 <br />16.5 <br />27 <br />15 <br />1.315 <br />48.4 <br />16.2 <br />27 <br />20 <br />1.315 <br />Phase II BRB-3 2016 <br />50.9 <br />11.7 <br />35 <br />10 <br />1.307 <br />48.2 <br />12.0 <br />35 <br />11 <br />1.307 <br />Haul Road Reference Area 2016 <br />43.4 <br />5.4 <br />15 <br />3 <br />1.345 <br />27.4 <br />5.1 <br />15 <br />7 <br />1.345 <br />Aspen Reference 2016 <br />163.E <br />27.0 <br />20 <br />5 <br />1.3277 <br />74.6 <br />20.1 <br />20 <br />13 <br />1.328 <br />Mtn. Brush Reference 2016 <br />128.1 <br />17.5 <br />16 <br />4 <br />1.3406 <br />44.9 <br />11.5 <br />16 <br />12 <br />1.341 <br />Sagebrush Reference 2016 <br />78.0 <br />15.6 <br />17 <br />8 <br />1.3368 <br />36.4 <br />9.6 <br />17 <br />13 <br />1.337 <br />Steep Mtn. Brush Reference 2016 <br />62.3 <br />17.4 <br />17 <br />14 <br />1.3368 <br />28.2 <br />5.6 <br />17 <br />7 <br />1.337 <br />N = Sample Size <br />2N-min = Minimum sample size necessary to detect a 10% reduction in the mean with 90% confidence using n-1 degrees of freedom <br />3Sample adequacy (N-min) calculated using individual samples and all -hit herbaceous cover corrected for "excess" annual cover and noxious <br />weeds. <br />Page 1 of 1 <br />