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• Perennial forbs contributed a total of 2.93 percent of the total cover or 9.46 percent of the total <br />relative cover on this site. <br />Alkali Sagebrush was the dominant plant growing on this site, contributing a total of 14.67 <br />percent of the total cover and 47.31 percent of the total relative cover on this site. Douglas <br />Rabbitbrush, Prairie Junegtass, Wyoming Big Sagebrush, and Common Stonecrop and were the <br />other dominants on this site, contributing 16.56, 12.47, 9.03 and 4.30 percent, respectively, of <br />the total relative cover on this area <br />Table 26 of the Ken Permit states that in 1980, the total plant cover growing on this site <br />averaged 38.0 percent When RMR sampled this site in 1996, they reported that the total plant <br />cover averaged 50.16 perrem. In their 1999 sampling of this site, ESCO reported that total plant <br />cover averaged 33.4 percent. When sampled in 2005, the total plant cover on this site averaged <br />31.07 percent. <br />The locations of the I S cover transacts sampled on this site in 2005 are shown on Map 2, Alkali <br />Sagebrush Reference Area -Vegetation Transact Location Map. Copies of the individual field <br />data sheets for the plant cover sampling of this site are found in Appendix C -Copies of Alkali <br />Sagebrush Reference Area -Plant Cover Field Data Sheets. The sample adequacy calculations in <br />Table 2, Man: Mine Sample Adequacy Calculations, document that the number of samples <br />required to describe this site at the 90 percent confidence interval was 6.6 transacts. <br />• Production The results obtained from the sampling of the 30 production transacts on Alkali <br />Sagebmsh Reference Area are presented in Table 6, Alkali Sagebmsh Reference Area - <br />Production. Total herbaceous forage production on this location averaged 5.71 g/1/4m2or 203.6 <br />pounds or air-dry forage per acre. Perennial grasses averaged 3.85 g/1/4mZ and contributed <br />67.43 percent of the total herbaceous forage and perennial forbs, contributed an average of 1.86 <br />g/1/4m2 or 32.57 percent of the forage produced on this site. There were no annuals sampled in <br />any of the production plots at this site. <br />Table 26 of the Kerr Permit states that total herbaceous production in 1980 for the Alkali <br />Sagebrush Reference Area averaged 7.18 g/ I /4mZ or 255.7 pounds of air-dry forage per acre. In <br />1996, RMR reported that the total herbaceous production on this site averaged 3.64 g/1/4m2 or <br />129.7 pounds of air-dry forage per acre. In 1999, ESCO reported that the total herbaceous <br />forage production on this site averaged 10.6 g/1/4mZ or 377.8 pounds ofair-dry forage per acre. <br />In the 2005 sampling of this reference area, total herbaceous forage production on this location <br />averaged 6.61 g/1/4mZ or 235.6 pounds or air-dry forage per acre. <br />The locations of the 30 production transacts sampled on this area are shown on Map 2, Alkali <br />Sagebrush Reference Area -Vegetation Transact Location Map. Copies of the field data sheets <br />corresponding to this site are found in Appendix D -Copies of Alkali Sagebnrsh Reference Area <br />- Production Field Data Sheets. Examinafion of Table 2, Man• Mine Sample Adequacy <br />Calculations, reveals that sample adequacy at the 90 percent confidence interval was equal to <br />15.3 transacts. <br />• 8 <br />