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• contributed 36.76 percent of the total relative plant cover. The most dominant forb was the <br />native perennial forb, Lewis Flax which contributed 6.05 percent of the total relative cover on <br />this reclaimed site. When ESCO sampled this site in 1999, they reported that the total average <br />plant cover was 37.9 percent and the four most dominant plants were Western Yarrow, Alfalfa, <br />Yellow Sweetclover and Lewis Flax which contributed 35.09, 9.63, 8.39 and 8.07 percent, <br />respectively, of the total relative plant cover on this site. <br />The locations of the 15 cover sampled on the main south block of this reclaimed area are shown <br />on Map 4, 1995 & 1999 Reclamation -Vegetation Transact Location Map. Copies of the <br />individual field data sheets for the plant cover sampling of this site are found in Appendix I - <br />Copies of 1995 Reclamation -Plant Cover Field Data Sheets. The sample adequacy calculations <br />in Table 2, Kerr Mine Sample Adequacy Calculations, document that the number of samples <br />required to describe this site at the 90 percent confidence interval was 11.3. <br /> <br />Production. The results of the 30 production transacts sampled on this area are snmmari~e~t in <br />Table 11, 1995 Reclamation - Production. 'I'bis table shows that the average total herbaceous <br />forage production on this site equaled 25.09 g/1/4 mZ or 894.2 pounds of air dry-dry forage per <br />acre. Perennial grasses contributed 19.32 g/1/4 m' or 77.01 percent of the herbaceous forage <br />produced on this area Perennial forts, contributed 5.38 g/1/4 mZ or 21.44 percent of the <br />herbaceous forage production on this area. Annuals, contributed 0.39 g/1/4 m2 or 1.55 percent of <br />the herbaceous forage production on this area When ESCO sampled this site in 1999, they <br />reported that the total herbaceous production averaged 19.15 g/1/4 mZ or 682.5 pounds of air <br />• dry-dry forage per acre <br />The revegetation forage production standard for this area is 7.40 g/1/4mZ or 263.7 pounds of air- <br />dry forage per acre. Since this site yielded 25.09 g/1/4mZ or 894.2 pounds of air dry-dry forage <br />per acre in 2005 and 19.15 g/1/4 mZ or 682.5 pounds of air dry-dry forage per acre in 1999, <br />these data suggest that this area currently and historically satisfies the revegetation success <br />standard with respect to total herbaceous forage production. Using the reverse null statistical <br />approach to the production data obtained from this site, results in a t< value of 6.3301. Since this <br />tr value is greater than the table t value at an alpha error probability level of 0.20 which <br />corresponds to a t value of 0.854, ~ is rejected and the revegetation production on this site is <br />considered successful. <br />The locations of the 30 production transacts sampled for the main reclamation block for this site <br />in 2005 are shown on Map 4, 1995 & 1999 Reclamation -Vegetation Transact Location Map. <br />For that block located to the north of Jackson County Road # 29, see Map 5,1996 Reclamation - <br />Vegetation Transact Locatioa Map and for that narrow strip east of the existing access road, see <br />Map 3, Pre-1986 Reclamation -Vegetation Transact Location Map. Copies of the individual <br />field data sheets for the forage production sampling of this site are found in Appendix J -Copies <br />of 1995 Reclamation -Production Field Data Sheets. The sample adequacy calculations in Table <br />2, Ken• Mine Sample Adequacy Calculations, document that the number of samples required to <br />describe this site at the 90 percent confidence interval was 69.8 transacts. However, since the <br />production on the reclaimed site exceeds the revegetation success standard, sample adequacy <br />. was achieved with 30 transacts. <br />12 <br />