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Southfield Vegetation Standards <br />TR-45 January, 2015 <br />data collected from the three reference areas located at the Southfield Mine site in 2013 <br />and excluding these three species, resulted in revised woody plant density values of <br />17.99, 424.17 and 22.01 woody plants per acre being obtained from the sampling of the <br />Refuse Pile Reference Area, the New Portal Reference Area, and the Old Portal <br />Reference Area, respectively. The weighted average value for the 2013 woody plant <br />density sampling was 464.17 plants per acre. <br />The 2014 bond release sampling of these same three areas resulted in revised values of <br />163.52; 235.78; and, 81.47 woody plants per acre being sampled in the identical three <br />reference areas, which result in a weighted average value of 480.77 woody plants per <br />acre. Therefore, based upon these data, EFCI is proposing an average value of the 2013 <br />and 2014 woody plant densities as the ultimate revegetation woody plant density value. <br />Thus, the overall weighted average value relative to the woody plant at the Southfield <br />Mine would be a woody plant density revegetation success standard of 472.47 woody <br />plants per acre. <br />Relative to the weighted average woody plant density value for the two different <br />reclaimed areas, the weighted average reclamation woody plant density value will be <br />calculated based upon the weighting factors associated with the respective size of these <br />two reclaimed areas. The area of the Refuse Pile Reclamation calculated in the 2013 and <br />2014 revgetation monitoring efforts was 46.78 acres, the area for the Vento Portal <br />Reclamation was determined to be 10.22 acres, which yields a total area of 56.60 acres. <br />Therefore, the revised woody plant reclaimed weighting factor will be 0.8265 for the <br />Refuse Pile Reclamation and 0.1806 for the Vento Portal Reclamation. Thus, in the <br />determination of the final woody plant weighted average for the Southfield Mine site, the <br />average woody plant density for the Refuse Pile Reclamation will be multiplied by a <br />factor of 0.8265 and for the Vento Portal Reclamation, by a factor of 0. 1806, and these <br />two resulting values will be summed into a final woody plant density figure. For <br />purposes of statistical analyses, both the mean and standard deviation values for these <br />two reclaimed areas will be multiplied by these factors. <br />The final revegetation success standard with respect to woody plant density values for the <br />combined reclaimed areas at the Southfield Mine will be considered to be successful, <br />when reclaimed area woody plant density value exceeds the calculated reference area <br />weighted standard 472.47 woody plants per acre. If the overall weighted average woody <br />plant density counts from the reclaimed areas associated with the Refuse Pile reclamation <br />and the Vento Portal reclamation exceed this value, then the woody plant density <br />standard will be considered to be satisfied. <br />0 <br />