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+YI i i ~i ~ ~'rwra ~ ~u~ayu'~ a~- ~ u~~ ~ Iu~.~.~"'~yw~~~'u~~ l"~. i ~ 4-~"I'~"r"i'ce' +~"~~ r.u ~ rn. i~ _ ~~ .~ r~ <br />War ~r Y~Y ~ ~~ 1~ 1~ ~ ~ ~~~~ ~ ~~ ~~ ~~~ Mir ~~ r"`r '~YY4r/ I i <br />. •• ~ ~ <br />TABLE 1 <br />HENDERSON MILL -TAILING DAM NO. 1 <br />SUMMARY OF SLOPE STABILITY ANALYSES <br />COMPUTED FACTOR OF SAFETY a~ <br />RAISED EMBANKMENT AT <br />EXISTING EMBANKMENT AT EXISTING EMBANKMENT AT "I1-HtESHOLD" WATER <br />STUDY SECI7ON FEBRUARY '92 WATER LEVELS 'THRESHOLD" WATER LEVELS LEVELS <br />7-7' 239 1.87 1.61 <br />8-8' 2.61 1.78 1S5 <br />9-9' 2.70 1.83 1.54 <br />10-10' 2.97 1.85 1S2 <br />11-I1' 2.97 1.96 1S7 <br />Notes: 1) The computed factors of safety correspond to critical circular shear surfaces found to have the lowest factor of safety. <br />2) 'Threshold" water level taken as 10 feet below ground surface at piezometer location. <br /> <br /> <br /> <br />729f~0.f10)/RIT.1 OFI6fLLLTr Sheet 1 of 1 <br />