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Table 2, <br />Southfield Mine <br />2013 Statistical Summary and Sample Adequacy Calculations <br />Site/Parameter <br /># <br />Samples <br />Collected <br />Mean <br />Std. <br />Dev. <br />Nm <br />90/10 <br />Nm <br />Using <br />Reverse <br />Null <br />Refuse Pile Reference Area <br />Total Plant Cover (%) <br />15 <br />29.00 <br />3.42 <br />2.5 <br />- <br />Allowable Cover (%) <br />15 <br />28.67 <br />3.37 <br />2.5 <br />- <br />Forage Production (g/1/4m2) <br />30 <br />9.93 <br />5.12 <br />45.7 <br />30 <br />Shrub Density (#/100 m2) <br />50 <br />1.80 <br />1.11 <br />28.7 <br />- <br />Refuse Pile Reclamation <br />Total Plant Cover (%) <br />25 <br />60.00 <br />7.30 <br />2.6 <br />- <br />Allowable Cover (%) <br />25 <br />47.28 <br />11.23 <br />9.8 <br />- <br />Forage Production (g/1/4m2) <br />30 <br />24.83 <br />8.58 <br />20.5 <br />- <br />Shrub Density (#/100 m2) <br />30 <br />7.10 <br />11.41 <br />197.3 <br />30 <br />New Portal Reference Area <br />Total Plant Cover (%) <br />17 <br />28.65 <br />6.25 <br />8.5 <br />- <br />Allowable Cover (%) <br />17 <br />28.06 <br />6.61 <br />9.9 <br />- <br />Forage Production (g/1/4m2) <br />30 <br />2.59 <br />3.13 <br />250.9 <br />30 <br />Shrub Density (#/20 m2) <br />30 <br />30.47 <br />16.24 <br />21.7 <br />- <br />Vento Portal Reclamation <br />Total Plant Cover (%) <br />15 <br />44.33 <br />6.52 <br />3.9 <br />- <br />Allowable Cover (%) <br />15 <br />42.33 <br />6.72 <br />4.6 <br />- <br />Forage Production (g/1/4m2) <br />30 <br />19.28 <br />7.09 <br />23.2 <br />- <br />Shrub Density (#/100 m2) <br />30 <br />25.33 <br />25.24 <br />75.8 <br />30 <br />Old Portal Reference Area <br />Total Plant Cover (%) <br />34 <br />13.26 <br />4.78 <br />22.3 <br />- <br />Allowable Cover (%) <br />34 <br />13.26 <br />4.78 <br />22.3 <br />- <br />Forage Production (g/l/4m2) <br />30 <br />1.92 <br />1.16 <br />62.7 <br />30 <br />Shrub Density (#/20 m2) <br />30 <br />31.10 <br />24.49 <br />47.4 <br />30 <br />Corley Reclamation <br />Total Plant Cover (%) <br />15 <br />28.47 <br />5.03 <br />5.7 <br />- <br />39 <br />