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5.4 Conclusion <br />According to CDMG regulations Phase II Bond Release cannot be granted until the applicant <br />demonstrates that the existing revegetated areas will result in equivalent or lesser sediment <br />contributions to surface runoff when compared with pre-mining levels as determined by baseline <br />data. <br />Using RUSLE Colowyo has demonstrated that the sediment contributions from the reclaim <br />areas do not exceed levels found on the pre-mining communities. Colowyo's calculations <br />demonstrate that the annual tons per acre of sediment loss on the reclaim areas (Table 10) do <br />not exceed the sediment contributions to surface runoff of the pre-mining areas (Table 6). <br />While the use of RUSLE has its limitations, Colowyo believes that, given the outstanding cover <br />percentages found on the Colowyo revegetation plus the overall roughness of the reclaimed <br />area surface, our findings are reasonably acceptable. <br />~J <br /> <br />20 <br />