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• calculations in Table 2, Kea Mine Sample Adequacy Calculations, reveals the number of <br />samples required to describe the shrub density on this area at the 90 percent confidence interval <br />was 47.2 transects. Since the actual shrub density counts on the reclaimed site (2,641.5 stems <br />per acre) exceeds the approved standard (1,500 stems per acre), using the DMG's recently <br />adopted regulations and the reverse null statistical approach it can be determined that sample <br />adequacy is achieved with 30 transects. Application of the reverse null statistical approach to <br />the shrub density data set for this site yields a t~ value of 3.4065. Since this t~ value is greater <br />than the table t value at an alpha error probability level of 0.20 which corresponds to a t value of <br />0.854, Ho is rejected and the revegetation shrub density on this site is considered successful. <br />Species Diversity. The percent relative wmposiflon or cover values in Table 7, Pre-1986 <br />Reclamation -Plant Cover, document that the fow most dominant plant species growing on this <br />reclaimed site contributed a total of 59.89 percent of the total relative cover found on this site. <br />This is well within the maximum value of 83 percent required by the Pemut. The most <br />dominant species growing on this reclamation site contributes only 29.42 percent of the total <br />relative cover, less than the 40 allowed and one of the fow dominants is a shrub. When RMR <br />sampled this site in 1996, all of the dominants were cool season perennial grasses which <br />wntributed a total of 56.81 percent of the relative cover and the single most dominant plant <br />contributed 17.75 percent of the total relative cover. When ESCO sampled this site in 1996, they <br />reported that the fow most dominant plants on this site contributed a total of only 49.90 percent <br />of the relative cover and the single most dominant plant contributed 17.52 percent of the total <br />relative cover and one of the fow dominants was a forb. These revegetation monitoring data <br />• from this site confirm that the species diversity standards for this reclaimed site in 2005 and for <br />all previous sampling periods are satisfied. <br />1995 RECLAMATION <br />Plant Cover. The results obtained from the sampling of the 15 plant cover transects on this <br />reclaimed site are presented in Table 10, 1995 Reclamation -Plant Cover. Total plant cover on <br />this site averaged 40.80 percent and litter cover averaged 22.60 percent (Table 10, 1995 <br />Reclamation -Plant Cover). <br />The cover success standard for all reclaimed sites at the Man Mine is based upon a weighed <br />average of the two corresponding reference areas. Table 10, 1995 Reclamation -Plant Cover, <br />documents that the "total plant cover" on this reclaimed site averaged 40.80 percent. Since this <br />`total plant cover" value (40.80 %) exceeds the revegetation success standard (31.70 %) and <br />sample adequacy has been achieved for cover sampling on the two corresponding reference areas <br />and this reclaimed site, it can be concluded by direct comparison that the "total plant cover" for <br />the 1995 Reclamation Block satisfies the revegetation success standard with respect to "total <br />plant cover." <br />Perennial cool season grasses dominant the seeded vegetation. Western Wheatgrass, Russian <br />Wildrye and Sheep Fescue were the most commonly encountered grasses on this site, <br />contributing 12.25,11.11 and 7.03 percent, respectively, of the total relative cover on this area. <br />• However, the most dominant species growing on this site was Wyoming Big Sagebrush which <br />ti <br />