Laserfiche WebLink
• <br />• <br />Appendix Table 2.04.10 -2, New Horizon North Mine Area - Sample Adequacy Calculations, <br />document that the number of samples required to describe this site at the 90 percent confidence <br />interval was 2.7 transects. <br />Production. The results obtained from the sampling of 69 production transects on this area are <br />summarized in Appendix Table 2.04.10- 10, Irrigated Pasture - Production. This table shows that <br />the herbaceous forage production equaled 92.18 g/1/4 m or 3,285.3 pounds of air dry -dry forage <br />per acre. Perennial grasses contributed 64.98 g/1 /4 m or 70.49 percent of the herbaceous forage <br />produced. Perennial forbs, contributed 27.20 g/1/4 m or 29.51 percent of the herbaceous forage <br />production. <br />The locations of the 69 production transects sampled for this site are shown on Map 2.04.10 -1, <br />Permit Area Vegetation Map. The sample adequacy calculations in Appendix Table 2.04.10 -2, <br />New Horizon North Mine Area - Sample Adequacy Calculations, document that the number of <br />samples required to describe this site at the 90 percent confidence interval was 41.8 transects. <br />Shrub Density. The shrub density counts obtained from the 15 belt transects sampled in this <br />vegetation type are summarized in Appendix Table 2.04.10 -11, Irrigated Pasture - Shrub <br />Density. The average shrub density was determined to equal 1.63 shrubs per one hundred square <br />meters or 65.9 shrubs per acre. Sandbar Willow, Nutka Rose, Russian Olive, Rubber <br />Rabbitbrush, Siberian Elm and River Hawthorn were the only shrubs encountered. <br />The locations of the 15 shrub density transects sampled in the Irrigated Pasture predisturbance <br />area are shown on Map 2.04.10 -1, Permit Area Vegetation Map. Examination of the sample <br />adequacy calculations in Appendix Table 2.04.10 -2, New Horizon North Mine Area - Sample <br />Adequacy Calculations, reveals the number of samples required to describe the shrub density on <br />this area at the 90 percent confidence interval was 679.9 transects. <br />DRYLAND PASTURE <br />This vegetation type is found on those portions of the proposed permit area which have been <br />planted to improved pasture species and which is some instances were historically irrigated 15 to <br />20 years ago and which are no longer being irrigated. The Dryland Pasture vegetation type is the <br />forth largest plant community type found within the proposed NHN Mine permit area (Map <br />2.04.10 -1 - Permit Area Vegetation Map). This vegetation type covers an area approximately <br />44.49 acres in size and accounts for nearly 13.81 percent of the proposed permit area. <br />Plant Cover. The results of the sampling of the 15 plant cover transects on this site are presented <br />in Appendix Table 2.04.10 -12, Dryland Pasture Plant Cover, Total plant cover on this site <br />averaged 39.20 percent, litter averaged 35.87 percent, bare ground averaged 23.40 percent and <br />rock averaged 1.53 percent ( Appendix Table 2.04.10 -12, Dryland Pasture Plant Cover). <br />However, noxious weeds, annuals and biennial plant cover accounted for 22.13 percent of the <br />total cover and 56.45 percent of the total relative cover on this site. "Total allowable cover" a <br />Section 2.04.10 Page 14 April 2011 <br />