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EXHIBIT 12 <br />COLOWYO RECLAIMED AREAS <br />REGRADED OVERBURDEN SAMPLING cF B 3.t <br />• GRID DATE B CA COND ESP MG NA PB PH SAR SE <br />NUMBER mg/kg megA mho % megn megA mg/kg mg/kg <br />p VALUES 270 270 270 260 270 270 270 270 270 270 <br /> <br />MAX 7.20 23.70 7.30 42.90 37.50 54.90 20.90 6.40 24.30 0.47 <br /> <br />MIN 0.00 0.48 0.20 0.10 0.33 0.19 0.01 6.30 0.20 0.000 <br />i• <br />MEAN 0.35 4.91 1.28 3.52 5.12 3.89 2.27 7.50 2.01 0.03 <br />STD DEV 0.52 3.69 0.94 5.60 4.72 4.91 2.12 0.40 2.76 0.05 <br />