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IME (Kent Crofts, principal) of Yampa, Colorado was contracted to conduct vegetation sampling under <br />the direct supervision of Trapper Environmental Manager Forrest Luke and is the author of the <br />Attachment 1 reports. Sampling was conducted as approved in Trapper's permit application C-81-010 <br />to ensure that applicable approved post-mining land uses were achieved. <br />2.1. Vegetation Sampling Summary <br />Table 2.1-1 gives a summary of the vegetation data totals presented in Attachment 1 and compares <br />these totals against bond release success standards outlined in the Trapper permit document. Table <br />2.1-1 data conclusively demonstrate that all vegetation standards were met for all parameters of <br />interest for cropland and rangeland post-mining land uses during both 2004 and 2005 sampling years. <br />2.2. Sample Adeguacv <br />Table 2 in Attachment 1 provides a summary of sample adequacy values calculated for all of the <br />vegetation parameters sampled for cropland and rangeland with this SL-7 application. Further detail <br />on how these sample adequacy values were calculated is provided in Appendix 2 of the main <br />document. <br />Results of the application of the reverse null hypothesis T-Test on mean to demonstrate revegetation <br />success for production and shrub density values are given in Table 2.2-1. Note that for all of the plant <br />production and shrub density sample parameters in question, the calculated T value exceeded the <br />table T value by a wide margin. Thus, in all cases the null hypothesis was rejected and revegetation <br />parameters were deemed successful. <br />Rangeland plant cover values were monitored in all of the subject bond release blocks using simple <br />random sampling. For this parameter the sample adequacy equation used in Table 2 of Attachment 1 <br />(and further illustrated in Appendix 2) was valid and sample adequacy was achieved. Since in all <br />cases the sampled values exceeded the bond release standards and since an adequate sample was <br />demonstrated, there was no need to subject these parameters to a reverse null evaluation. <br />3.0 Achievement of the Post-Mining Land Use <br />Trapper Mining Inc. has achieved the approved post-mining land uses of reclaimed cropland and <br />rangeland. <br />2 <br />