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Acreage of the Vegetation Reference Areas (RA's): Weighting Factors <br />Refuse Pile (Plot A): 2.80 acres 0.5858 (2.80/4.78) <br />Old Portal (Plot B): 0.29 acre 0.0607 (0.29/4.78) <br />New Portal (Pinion -Juniper): 1.69 acres 0.0354 (1.69/4.78) <br />Total area of RA's: 4.78 acres <br />The weighting factors are then multiplied by the vegetation data values collected from each <br />respective Reference Area. <br />Example: <br />Weighting <br />Reference Area Collected Vegetation Data Factor Value <br />Plot A a X 0.5858 = x <br />Plot B b X 0.0607 = y <br />New (Pinion -Juniper) <br />c <br />Sum of the three RAs weighted vegetation values <br />X 0.0354 = <br />M <br />The sum of the three vegetation values (x + y + z) will then be added into a sum which will be <br />the ultimate plant cover and forage production revegetation success standards for the <br />Southfield Mine. <br />Or, to express in a different way, the sum of the weighted reference area values (the standard) <br />would then be used for the success comparison for the weighted reclamation blocks. <br />TR -45 <br />2.04.10-5a <br />Revised 07/15/15 <br />