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CONTROL PRACTICE FACTOR (P) <br />This factor is used to identify those soil conservation and tillage practices which affect <br />the level of sediment generated from a site (e. g., terraces, cross slope tillage, contour <br />planting). In this comparison we aze interested in the sediment generated from <br />reclaimed or revegetated sites and undisturbed sites where these practices would have <br />no special impact on soil loss at this time. Therefore, for the purposes of our <br />comparison, a value of unity (one) will be assigned this factor, rendering no impact to <br />our calculations. <br />III. RESULTS <br />LISLE CALCULATIONS <br />Based on our assigned factor values, soil loss was calculated for each of the reclaimed, <br />revegetated, and undisturbed azeas. Results are presented in Table 3. In each case, <br />soil loss from the reclaimed or revegetated area was calculated to be less than that <br />expected from the adjacent undisturbed area. <br />IV. CONCLUSIONS <br />The results of the LISLE calculations show that the reclaimed or revegetated areas at the <br />Lone Pine Gulch Surface Facilities Area and Water Tank Site produce less sediment <br />than the adjacent undisturbed oakbrush or sagebrush areas. The calculated values from <br />the LISLE comparison of undisturbed and reclaimed areas verifies what is expected in <br />this case and also what has been seen at other reclaimed sites in Colorado. Based on <br />the results of the soil loss analysis, the reclaimed and revegetated areas aze eligible for <br />removal of silt fence sediment control structures. <br /> <br />-6- <br />