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r~ <br />LJ <br />SOIL LOSS COMPARISON -BLUE RIBBON MINE <br />RECLAIMED VERSUS ORIGINAL CONDITIONS <br />The following calculations are presented to determine if untreated drainage from the <br />reclaimed Blue Ribbon Mine Grassland Community is contributing suspended solids to <br />streamflow or runoffoutside the permit area in excess of pre-mining levels. <br />The baseline data for comparison is the Oak Shrub community that existed prior to <br />mining. Baseline data is sketchy in the permit. Based on the data in the permit, page <br />63, the dominant overstory is Oak which varies in height from 1 to 6 meters. Very little <br />grass is under the dense stands of Oak. The following data in inferred from the <br />discussion in the permit in section 2.04.10. <br />Baseline <br />Total Vegetation Cover 25.0% <br />Perennial Cover: <br />• <br />Grasses, etc. 25.0% <br />Fortis 0.0% <br />Shrubs 0.0% <br />Trees 75.0% <br />Total Perennial Cover 25.0% <br />Litter 30.0% <br />Perennial Cover + Litter 55.0% <br />Canopy (Trees and Shrubs) 75.0% <br />The condition of the reclaimed Blue Ribbon Mine Site is obtained from the May 2007 <br />vegetation study. The results of this vegetation report, presented in Table 3 of the <br />report, are as follows: <br />Total Vegetation Cover <br />r~ <br />U <br />Reclaimed <br />60.0% <br />30.0% <br />27.4% <br />0.8% <br />0.0% <br />1 of 4 <br />9/08 <br />Perennial Cover: <br />Grasses, etc. <br />Fortis <br />Shrubs <br />Trees <br />Appendix C <br />7"R-1 ~ <br />/~ PPRou~ <br />~o~/~ ~ <br />