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the highhway will be grzided ~Ynd coni;riured'to an approximation of the origin <br />nal slope ef'40 percent (Exhibit 2.05.4-F). bEater liars will be incor- <br />porated into the recontourect area aFteN distribution of topsoil.. <br />Below the highway, grading end fill~irig will be sufficient to provide a <br />reclai'ir;able contour with a grade of approximately 30 percent in the wash <br />plant and laydown areas since original contours have been altered only <br />slightly. After ~tiie three sediments ponds and drainage channel have been <br />filled, the entire area-will be graded and riliped•in preparation for top- <br />soil replac~m~nt. The .tail •.t~~ck ~ar:Ha svi'(l~be: gr,r.'ded~ x~~roriform to.tlte <br />contour of :Ge !ii~il•~i•d~ just. above and rTprap will i{e placed along the <br />riverbank to~•tireyent washout. <br />A channel for f.he.wa*_erGour`se crossing: the East Pdr`tal Disturbance <br />• Arwa will be provided. The channel• wi•ll.cnnsist. di; a rocklined ditch. <br />Wes". Portal Ois$uraarcEyAr~e <br />The ar.~a above the highway ;rithin the distur~barce area will .b?.graded <br />and contoured .to an approximation; of the rr•iginal slope (40 'co 5Q pE~•cent) <br />and physiogrAphy (Exhibit 2.05.4•~G). Small areas of slopes eFCeediny 50 <br />percent are.~resent. Grading will consist of reducfing these slopes ~as muctr <br />ac..possibip:,and=establishidg.a safety faa4or of I:5 where slopes exceed <br />1Va~i. The !static safety factor' of T:5.,w•°1'1 be demonstrated to Ch1t.'r2B prior <br />to •abandonm~ht. •Ghadir~3 by dozer wtli fsll:,w removal oi` structures, <br />sea~li,ng of oortals (4.07.3), backfilling of cuts.fcr the portals ,and access <br />road, and ~;Nnpaction of filled areas. Water bars will be incor.pbrated into <br />the.•recontq{:red area after distribution of topsoil. <br />• <br />z.a~a4s <br />