Laserfiche WebLink
1 <br />' Kent Gorham <br />' June 12, 2006 <br />Page 5 <br />' The null hypothesis being tested is that the bond release block mean (u) is greater than or equal to <br />90% of the standard (H°: u > Q). If 4 is less than or equal to the 1-tailed t table value for alpha error <br />' probability of .10 at the appropriate degrees of freedom, then H° is not rejected, and revegetation is <br />deemed successful for the pazameter tested. <br />' Species Diversity <br />The diversity ofplant species present in the Rangeland Reclaimed Area will be evaluated using data <br />' on vegetative ground cover acquired from the point-intercept transects. An evaluation of species <br />diversity will be derived from data acquired during the July sampling event. Data from the transects <br />will be analyzed by implementing Equation 4 to calculate the relative cover of each species <br />^ detected. <br />(4) <br />~ % Cover of Species X <br />Relative Cover of Species X = /Total Vegetative Cover <br />Post-mining success of species diversity will be evaluated utilizing the relative cover values derived <br />from the data collected along the point-intercept transects conducted on the Rangeland Reclaimed <br />Area. The species diversity standazd for the Rangeland Reclaimed Area is the establishment of two <br />' cool-season grasses, two warm-season grasses, and one perennial forb, each with a relative cover <br />value between 5 and 60 percent. <br />' Basin will submit an application for Phase III bond release, including data obtained during the 2005 <br />and 2006 sampling events, in the fall of 2006. <br />-, We plan to conduct sampling for vegetative ground cover, herbaceous production, and species <br />diversity on July 10 through July 13, 2006. Two maps (Figures 1 and 2) that display the planned <br />sample locations for the four sample azeas aze attached to the end of this study plan. If you have any <br />' questions or need additional information on our scope ofwork, please call me at (303) 850-0930. We <br />welcome all comments from the CDMG. <br />' Sincerely, <br />' Chuck Florian <br />_ Staff Ecologist <br />