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_ - • _ _. _ - - - - - <br />COLOWYO -I~~ ~I _ _ - <br />STABILITY REPORT - _ - - - • <br /> TYPE SOURCE ACCURACY DATA USED <br /> (Identified by Contractor) (05M Analysis 8 Contractor Analysis) <br />7. Slope Configuration <br /> a. Existing Coloblyo design E on-site <br /> inspection by contractor Excell erit 30' wide benches at 100' intervals from <br /> 6590' to 6900': lv:3h ou tslopes, <br /> top outslope lv:3h <br /> h. OSI•I Regs Projected (used to analyze 20' wide benches at 50' intervals from <br /> alternative stability) 6590' to 6900' or highe r~. <br />,.. natural Topography 02/01/77 Col °47yo Topo Excellent <br />3. SGiI Profile 04/77 Golde r• Repurt Good (based on coring data) <br />4. Strength Colluv (Soil) Penetrating Tes [s StandarJ hle thod - Fair Penetra [i on tests used to identif~ <br /> (no strength tests) internal angle of friction E=26`, 40° <br />5. Oe nsitY " 120 pcf <br />6. Strength Fill Angle of Repose Accepted 14ethod - Fair Angle of repose used to identify internal <br /> angle of friction 0=35°, 37°, 39° <br />7. Strength P.edrock Estimated from 71/75 Acceptable since used conservative Uirect shear tests upsl°pe of site 2500 <br /> 4lahler Report figure (no strength tests) psf cohesion p=10°, density = 135 pcf <br />o. Density 06/77 Golder Rpt 8 Assumption Accep [able, estimates conservative Density = 125 pcf (Golder), 105 pcf, 115 pcf <br /> (no data provided) <br />9. Ground bla ter Assumed model condition Acceptable Satw•a ted surface daylights a[ 10, 50, 100, <br /> and 150 feet above the toe of the slope . <br />10. Cx U'n[ Unde ry round Workings Col olJyo Data Acceptable <br /> ~E ,.. ~ ,._, ;,; <br /> <br /> ~ <br />~ <br />' '~ I <br />~ f' -:t <br />~ ~~ <br />~ <br />~ <br />i _. <br />' <br />I , i I <br />' ~ <br />~y <br />i~1 I <br />,' <br />l <br />~. I <br />~ <br />ri <br />~' <br />;'" ~ ; f; <br />~, <br />~ . <br />~ <br />~ <br />~ <br />'' ~ <br />is <br />~ <br /> ~ . <br />~ <br />? <br />: , <br />fY . <br />~ : <br />s I ' S 1 <br />)' - ~. ~ ;~;' ~ ~~ F' r <br /> <br /> <br /> <br /> sr11 ~ h <br />~ ' r +~ <br />yj] '>i; I ,~ <br />I I <br />~ r ~~ <br /> it ~t ~ <br />.,, j ~ „~:.i~.~ i~ '~i, ~ ~ ~% _ .,, <br /> <br />