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• 5.3 Results <br />Table 6. RUSLE calculations for the four blocks in the ore-mining stases <br />Factor East Pit A East Pit B East Pit C Se16°n Explanation/Units <br /> <br />R 19 19 19 19 Permit C-81-019 <br /> Exhibit 7 Item 13 <br />K 0.25 0.31 0.30 0.29 Permit C-81-019 <br /> Exhibit 7 Item 13 <br />LS 1.67 1.44 5.74 2.35 RUSLE vers. 1.06 <br /> Application Table 9 <br />C 0.0006 0.010 0.0026 0.004 RUSLE vers. 1.06 <br /> Application Table 8 <br />P 0.9 0.9 0.9 0.9 Permit C-81-019 <br /> Exhibit 7 Item 13 <br />A 0.0043 0.0076 0.0766 0.0466 Tons per acre per <br /> year <br />With the exception of the LS and C factors, the input variables were previously agreed to with <br />the Division in the Permit C-81-019 Exhibit 7, Item 13, section 2.0 SEDIMENTATION <br />CALCULATIONS of the narrative (pages 3 thru 5) for pre-mining and post-mining conditions. <br />The acreage for the soils and pre-mining vegetative communities were calculated and used in a <br />weighted average to determine the K and C factors for each pre-mining block (see Tables 7 and <br />8). The P factor did not require a weighted average between vegetative communities because <br />• the values were the same for each community. The weighted average equations used for the K <br />and C calculations are: <br />KWI = <br />Acresso,~,, (Kso;,,, )+ Acressoi1e (K,oa e ) <br />Acresso;~,, +Acresso;~B <br />ACreSsagebrvrh (Csagebrvsh )+ Acre.SminShNb (Cmmshrvh <br />Cwl ACreSroRebrvsh+AcreSmMShrvh <br />Reference Area and Post-mining area control "C" factor printouts from RUSLE are provided at <br />the end of this section. <br />.~ <br />17 <br />