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4.0 SUCCESS EVALUATION <br />4.1 Ground Cover and Production <br />Success evaluations involve a direct comparison (and /or a reverse null statistical test) of appropriate <br />parameters for each variable of interest. Comparisons are made directly with either the reference area <br />parameters or the permitted standards. In the case of ground cover and production, comparisons are <br />directly made against weighted reference area data of the same year. In 2008, Cedar Creek was able to <br />make direct comparisons between the revegetated units included in Phase III bond release and reference <br />areas with regard to the variables of ground cover and production. Charts were developed to provide a <br />quick overview of the success of these revegetated efforts in comparison to reference area based criteria. <br />Chart 3 and Table 7 exhibit the results from ground cover sampling, and reveals that the Phase III <br />bond release area significantly exceeds the reference area comparison with 65.8% perennial cover versus <br />the 41.3% perennial cover standard (90% of 45.9 %). Chart 4 and Table 7 exhibit the results from <br />production sampling in 2008. This chart reveals that Phase III current annual production (1875.4 <br />perennial pounds per acre) is substantially higher than the success standard of 427.1 perennial pounds <br />per acre (90% of 474.6 ibs / ac). Moreover, Chart 4 reveals that Phase III current annual production is <br />at least double that found on the reference areas. <br />In Summary, Phase III areas addressed by this document strongly surpass the success <br />standards for around cover and production <br />Cedar Creek Associates, Inc. Page 25 Colowyo Mine <br />Phase III Bond Release Evaluation <br />