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<br />C.ald HIII MIC 7'aBlara Eetradrmeet Cws6x71~ <br />Topsor7 fiam the embanl¢nent foundation, barrow area above the adsting h0inge pond, and the exisfutg <br />anbeulmrerd have a tlwt end variable tapsorl layer. M topsofl that can reasonably be exaveted wr'9 be <br />removed end stockpiled in topsoil piles T-1 and T-2 deei~teted on the plan map (Ex}rihR E-2). Divmsion <br />ditches will be meettained on the uphill side of the topea7 p@es to provael aioeion. <br />The larger trees that ere removed druirrg conatntction wr71 be cut end removed fnr mine timber a f¢awood <br />Shrubs, smell aces. and branches from larger trees will be clipped std used u a mulch art topeorl <br />stockpiles, graded elopes of the excavsted mine dumps, and at the bpwled elopes of the new <br />embanlanert. <br />Feuedatlo~ Eaatvatlm <br />All foundation material lx~ow topsorl depth in the embetdmterel area vnll have eH roots and org®rc.meNa <br />trmoved. AO cod spots end unst»teble metaiel vvi0 be mnaved and replaced with Bored borrow meteoaL <br />The foundation materiel will be scarified and rooampacoed W a etinim® 94 pvomt of standard proctor <br />density using a sheepsfoot or tamping foot type compactor. Water will be added es neoeeeary bo mainlaut <br />material moisture within 2 percent of proctor optimum moisture Ott <br />C <br />T'he embanlancM will be constructed from meleriel obtained from the boaow am above the prasael <br />tailings pond and mine dump metedal from the White Cloud, Wynana, and Oscar mine droops. The mina <br />dump material will be placed in the core of the embankment no closer then five beet fivm the embanl®etd <br />surface. <br />Embprtlunent fill wig be placed err level lifts with no more than 10 feet of vettipl elevation diB'raertce <br />maintained during construction. Loose material lift thickness w~Il not exceed 18 inches. AII me6eriel wtU be <br />compacted with a sheepsfoot or tamping foot type compactor with a min~® of trna (4) pewee as until <br />the density 65` standard proctor methods is witlrttt 94°.G of maximum densely. Water writ be added 1o the <br />embenlanent fi0 prior to placement eo that moistrue content is wiBur- 2 peroart of optimum madetrae <br />content All rock larger than 12-inches wrll tx removed prior to coeapection. <br />!f construction on the embanlanent slope for more then twee days, the mast recerrt tiB will be aomified artd <br />water added, if necessary, to bring mausture content beck within 2 percent of optimum prods moistree. <br />Borrow materiel that is too wet for placement wr7! be yleced in storkpiles to dry err ruvted wig dry borrow <br />metmel to obtaer materiel that is wither 2 peroart of optimum moistwa. <br />w Mee E:wv <br />Prior W excavation in the borrow area, the existing Srrtoe will be removed snd the pad ]orer will be <br />removed from the anchor trench and laid or rolled back close to the pond edge. The Inver wry be covered or <br />otherwise protected against damage during excavation in the lxnrow area. <br />Excavation on the barrow area above the preernt tarlelrge pond wrll ahrt next to the pad m tlde uphill dde <br />and proreed bacY, towards the northwest to the dtimnte borrow area litnels. Excavatiar- wra proceed on the <br />full width of the borrow area parade! to the pond wWl bedrock is arcaruttaed. a untrl the Boor abpe is a <br />mutimum of 2 percerrt toward the pond. •All rock larger t6m 12 indtes st the exaaveted meterml will be <br />removed prior to placement in the embanlanent 5ll area. <br />