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i <br /> 2. Analyzed Slopes — Active Mining & Reclamation Slopes <br /> The Active Mining slope is 2H:1V and a maximum 40-ft tall. This slope will be maintained <br /> throughout the active highwall, before being backfilled to the final reclaimed slope. In the <br /> Reclaimed Condition, the mining slope is backfilled to 3H:1V. Given that the slope angle is lower <br /> than the friction angle it is expected that the lowest Factor of Safety failure slope will be greater <br /> than unity. The GALENA model results of the Bishop's Method of Slices shows the location and <br /> extent of the failure circle for both sets of conditions. <br /> Table GS-2 lists the analysis conducted and their respective factors of safety. <br /> GALENA data tables and analysis result figures are attached as Appendix GS-1. <br /> F mD --- Pem,R M,�yey lid we Peloine.Parer P. PPPUCANT CON5Vt.TA.N? Ern itit F -... <br /> - I 1:r2 P«:en,e,m cr .„,, :co P®ene sabot.* ALL RITE PAVMIGdilEOIMIX Bats a o few.UC Pam,.ava <br /> P.O.BOR MS <br /> E4, i,rnl,Swte,tr P;an EN+P <br /> �y Natty R,wr P,t <br /> C.ntis d&r h W OWN" ••.•/ P e.+,n0 f,are R*."'" ,tr�r>relme La Lee O66Me*"° TUS1W JOd.CdOlagtl E02I5 <br /> --'Om.of Ercaw,bn Watw Sr lace Area .id W J_D/,q ..YA[ t u,iAei w Q96aP YY OV t Lc. <br /> � mAoas n/,xro2 ,-.ea6 rxa <br /> ' ` Slope Analyzed in a� <br /> ED <br /> GALENA.See Figure GS-2 ceev <br /> - ``- ., Own+nN lYwd..d EW.Ot <br /> I <br /> MUM elrr }ff,,r \ 't <br /> r <br /> lt 1 IAt `.- --- A • r <br /> , - <br /> le <br /> 4 1'., <br /> m <br /> If <br /> /i (i ti nt _ � \ q d Y ss.- <br /> 1 .S r <br /> 1 R 'i 1 <br /> 1t 1�_, ` , i II, IIS k <br /> 1\\ ;? <br /> \+ It'.•1, wa = n `•m`6c erast. �wmrw,o \_ <br /> \r <br /> Figure GS-1. Locations of Slope Stability Analysis from the Approved Reclamation Map <br /> North River Pit GS-2 0 Lewicki& Associates <br /> April 2025 <br />