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Watershed Analysis Rule 2.06.5(2)(d) <br />Values of the Topographic Factor "LS" <br />Basin C - Proposed (Steep)-BENCH 2 <br /> Percent Slo e <br />Len th of Sloe 25 29.7 30 <br />120 6 8.1 9 <br />122 8.16 <br />130 7 8.4 9 <br />C = Cropplnq management faClOr <br />Values of the To o ra hic Factor "LS" <br />Basin C -Pro osed Stee -BENCH 3 <br /> Percent Slo e <br />Len th of Sloe 14 15.5 16 <br />300 4 5.5 6 <br />347 5.91 10 <br />400 ~ 4.5 6.4 7 <br />The "C" factor for the USLE is calculated from Figure 7, from agronomy note #50 dated <br />January 1977 as follows: Figure 7 - "C" Factors for Permanent Pasture and Rangeland <br />According to the approved Reclamation plan presented in Volume 5, Tab 14 page 14-26, <br />the lower portions of the Roadside South Portal areas above approximately 4750' will be <br />evaluated against the Shadscale reference area (shown in Volume 5, Appendix 14-7) <br />The pre-mining (`approved')condition of the vegetation on the disturbed area will be <br />assumed to be the values presented in Table 4 of the above reference vegetation <br />inventory, Shadscale Reference Area -Cover Data. <br />Total Plant Cover 30.2 <br />Total Perennial Cover 8.93 <br />Litter 21.27 <br />Tota{ Rock Cover 33.87°l° <br />Bare Ground 14.67% <br />Perennial Cover+Litter 30.2% <br />Canopy (Shrubs + Trees) 6.4% <br />i• <br />The cover of the 'proposed' area will be assumed to equal 90% of the cover of the <br />pre-mined area. The litter will be assumed to be equal to the pre-mined area. It will be <br />assumed the canopy of the reclaimed area will be limited. The estimated vegetative cover <br />of the reclaimed area will be as follows: <br />Total Vegetation Cover <br />Total Perennial Cover <br />Litter <br />PR-03 <br />30.2%*90%= 27.2% <br />8.93%*90% = 8.04% <br />21.3% <br />A14-9-4 <br />ozro7 <br />