2015-02-05_REVISION - C1981014 - Laserfiche WebLink

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Southfield Vegetation Standards TR -45 January, 2015 sizes of the Refuse Pile Reclamation Area was found to be approximately 46.38 acres; the size of the Vento Portal Reclamation Area was approximately 10.22 acres; the size of the Corley Reclamation Area was found to be approximately 11. 71 acres; and, the size of the Loadout Reclamation Area was found to be approximately 13.56 acres, for a total area of approximately 81.87 acres. Thus, the corresponding weighting factor for these four reclaimed areas would be 0.5666, 0.1248, 0.1430 and 0.1656, respectively. 2014 MONITORING DATA: According to the 2014 monitoring data, the Refuse Pile Reference Area; the New Portal Reference Area; the Old Portal Reference Area and the Loadout Reclamation Area, were found to possess a total of 2, 3, 2, and 2 species respectively, of warm - season grasses contributing greater than 3 percent relative cover. Calculation of the warm - season grass species diversity index will be made by multiplying the number of the warm season grasses contributing greater than three percent relative cover times the weighting factor described in the previous paragraph, which will yield the following values: Refuse Pile Reference Area (2 X 0.4829 = 0.9658); for the New Portal Reference Area (3 X 0.2911 = 0.8733); for the Old Portal Reference Area (2 X 0.0500 = 0.1000) and for the Loadout Reference Area (2 X 0.1759 = 0.3518). Thus, the calculated warm season species diversity index standard for the 2014 reclamation monitoring data will be 90 percent of 2.29 or 2.06. Application of the warm- season species counts from the 2014 reclamation monitoring data will be made following the example presented above for the 2013 reclamation monitoring data. Thus, if the reclaimed warm species diversity index value equals or exceeds the 2014 corresponding warm season species diversity index success standard of 2.06, it can be concluded that the 2014 revegetation monitoring data satisfy the proposed warm season species revegetation success standard. Application of the warm- season species counts to the 2013 and 2014 reclamation monitoring data (X species for the Refuse Pile Reclamation; X species for the Vento Portal Reclamation; X species for the Corley Reclamation, and X species for the Loadout Reclamation) with the corresponding sizes of these four areas given previously, results in the following weighted contributions being determined. For the Refuse Pile Reclamation Area (X times 0.5665 = x); for the Vento Portal Reclamation Area (X times 0.1248 = x); for the Corley Reclamation Area (X times 0.1430 = x); and, for the Loadout Reclamation Area (X species times 0.1656 =a value of x). Thus, the weighted average reclaimed warm- season species diversity index value for the Southfield Mine and Southfield Loadout Areas would equal the sum of these four reclaimed area calculated values. If the reclaimed species diversity index value equals or exceeds the corresponding warm season species diversity index value of 1.93 for the 2013 data or 2.06 for the 2014 data corresponding four reference areas, it can be concluded that the revegetation monitoring data satisfy the proposed warm season species revegetation success standard. The maximum allowable cover for any single warm season species on the reclaimed areas at the Southfield Mine and Southfield Loadout will be based upon the most