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• the forage production sampling of this site are found in Appendix M -Copies of 1996 <br />Reclamation -Production Field Data Sheets. The sample adequacy calculations in Table 2, Man' <br />Mine Sample Adequacy Calculations, document that the number of samples required to describe <br />this site at the 90 percent confidence interval was 77.8 transects. <br />Shrub Density. The shrub density counts obtained from the 30 belt transects taken in this area <br />aze summarized in Table 15, 1996 Reclamation -Shrub Density. The average shrub density was <br />determined to equa185.40 shrubs per one hundred square meters or 3,456.1 shrubs per acre. <br />Wyoming Big Sagebrush and Douglas Rabbitbrush were the most commonly encountered <br />shrubs. The revegetation shrub density success standard for this area is 1,500 stems per acre. <br />Since this site averaged 3,456.1 shrubs per acre, this area satisfies the revegetation success <br />standard with respect to shrub density. In 2005, the average shrub density on this reclaimed site <br />calculated to equa151.03 shrubs per one hundred squaze meters or 2,065.2 shrubs per acre. <br />The locations of the 30 shrub density transects sampled on this site are shown on Map 5, 1996 <br />Reclamation -Vegetation Trmsect Location Map. Copies of the individual field data sheets for <br />the woody plant density sampling of this site are found in Appendix N -Copies of 1996 <br />Reclamation -Shrub Density Field Data Sheets. Examination of the sample adequacy <br />calculations in Table 2, Man 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 123.8 transects. Since the actual shrub density counts on this reclaimed site (3,456.1 shrubs <br />per acre) exceeds the approved standazd (1,500 stems per acre), this site satisfies the revegetation <br />• shrub density standazd. <br />Species Diversity. The percent relative composition or cover values in Table 10, 1996 <br />Reclamation -Plant Cover, documents that the four most dominant plant species growing on this <br />reclaimed site account for 57.17 percent of the total relative cover found on this site, which is <br />well below the maximum of 83 percent relative plant cover allowed by the Permit. The single <br />most dominant plant species was found to be Russian Wildrye which contributed 29.89 percent <br />of the total relative cover found on this site, less than the 40 percent maximum value allowed for <br />a single species, with one of the four dominants being a forb and one is a shrub. <br />When ESCO sampled this site in 1999, they reported that the four most dominant species <br />contributed 79.71 percent of the total relative cover, with the most dominant plant contributing <br />38.41 percent of the total relative cover on this site and one of the four dominants was a <br />perennial forb. These revegetation monitoring data from this site confirm that the species <br />diversity standards for this rec]aimed site are currently and have historically been satisfied. <br />COIIC1US1OIIS <br />At the Marr Mine, since sample adequacy was achieved for plant cover sampling on the Big <br />Sagebrush and Alkali Sagebrush Reference Areas and the corresponding Pre-1986, 1995, and <br />1996 reclamation sites, and for these five areas, the plant cover growing on the revegetated sites <br />exceeds the calculated success standazd, it can be determined that the total plant cover growing <br />• <br />15 <br />