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<br />ADDendix A - (998 & 1997 VeRelWion SamD(inR Dora <br />' statistical test is used only when the reclaimed area sample mean value is less than the reference <br />area mean value. <br />(5) <br />' = Q - x <br />to <br />s~ <br /> Where: <br /> <br />t~ - <br />Calculated t value <br /> Q = 90% of the standard <br /> x = Bond release block sample mean <br /> sx = Standard error of the mean <br /> s Sample standard deviation <br />' n Sample size <br />' Post-mining success of species diversity was determined by comparing the relative cover values <br />of the reclaimed areas with the vegetation community designations assigned in the Permit. The <br />permit states: Slurco will establish a reclaimed vegetation community with a minimum of six (b) <br />' principal species, of which three (3) will be cool season grasses, two (2) will be shrubs, and one <br />(1) will be a forb. Additionally, within the post mining community, cool season grasses will <br />contribute 7 to b0 percent of the relative cover, the principal forb will contribute 1 to 35 percent <br />' of the relative cover, and there will be no cover requirement for the two shrub species. <br />RESULTS <br />Revegetation success for Phase III Bond Release at the Canadian Strip Mine was evaluated <br />' according to the CDMG, Guideline Regarding Selected Coal Mine Bond Release Issues, April 18, <br />1995. Vegetation parameters evaluated include: vegetative cover, production, shrub density, and <br />species diversity. Transect locations are illustrated in Figures A-1 through A-4. The analysis and <br />' results of each parameter are contained in the following sections. <br /> <br /> <br /> <br /> <br />1 <br />A-3 <br />