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Goodmiller #2 Pit <br />Table 3.1 Average Effective Shear Strength of Compacted Soils. <br />112 Permit <br />UNIFIED <br />CLASSIFICATION <br />SOIL TYPE <br />PROCTOR <br />MAXIMUM <br />DRY <br />DENSITY <br />pcf <br />COMPACTION <br />OPTIMUM <br />MOISTURE <br />CONTENT <br />% <br />AS COMPACTED <br />COHESION <br />C. <br />tsf <br />SATURATED <br />COHESION <br />CW <br />tsf <br />FRICTION <br />ANGLE <br />tb <br />deg <br />GW <br />well graded clean gravels, gravel -sand mixture <br />>119 <br /><13.3 <br />• <br />• <br />>39 <br />GP <br />poorly graded clean gravels, gravel sand mixture <br />>110 <br /><12.4 <br />• <br />• <br />>37 <br />GM <br />silty gravels, poorly graded gravel- sand -silt <br />>114 <br /><14.5 <br />+ <br />• <br />>34 <br />GC <br />clayey gravels, poorly graded gravel -sand -clay <br />>10 <br /><14.7 <br />• <br />• <br />>31 <br />SW <br />well graded clean sands, gravelly sands <br />11935 <br />13.312.5 <br />0.41t0.04 <br />' <br />38 ±1 <br />SP <br />poorly graded clean sands, sand - gravel mixture <br />11032 <br />12.4±1.0 <br />0.2410.06 <br />• <br />37tl <br />SM <br />silty sands, poorly graded sand -silt mixture <br />11411 <br />14.530.4 <br />0.53±0.06 <br />0.21 =0.07 <br />34t1 <br />SM -SC <br />sand -sift -clay with slightly plastic fines <br />119±1 <br />12.830.5 <br />0.21t0.07 <br />0.15±0.06 <br />3313 <br />SC <br />clayey ids. poly graded sand-clay mixture <br />11511 <br />14.7 ±0.4 <br />0.7810.16 <br />0.12 ±0.06 <br />31 =3 <br />ML <br />inorganic silts and clayey silts <br />10311 <br />19.2±0.7 <br />0.70 =0.10 <br />0.093• <br />32 =2 <br />ML -CL <br />mixtures of inorganic silts and clays <br />109 *_2 <br />16.810.7 <br />0.66 ±0.18 <br />0.231• <br />3212 <br />CL <br />inorganic clays of how to medium plasticity <br />108±1 <br />17.3 *_3 <br />0.9110.11 <br />0.14 =0.02 <br />2812 <br />OL <br />organic silts and silty clays of low plasticity <br />+ <br />• <br />• <br />• <br />+ <br />MH <br />inorganic clayey silts, elastic silts <br />8234 <br />36.313.2 <br />0.76 ±0.31 <br />0.21 :0.09 <br />2513 <br />CH <br />inorganic clays of high plasticity <br />9432 <br />25.5 ±1.2 <br />1.07 ±0.35 <br />0.12 =0.06 <br />19 ±5 <br />OH <br />organic clays and silty clays <br />• <br />• <br />• <br />• <br />s <br />*denotes insufficient data, > is greater than, < is lea than <br />(After Bureau of Reclamation, 1973; 1 pcf -157.1 NIm', I tsf -95.8 Us) <br />Figure 1- Material Properties for Slope Stability (from Huang) <br />PERMIT BOUNDARY <br />MINING SLOPE 1.6H:1V <br />RECLAIMED SLOPE 3i-I:`IV <br />-30' 40' -1 ` FAILURE ANGLE 2.75H:l V <br />BUFFER <br />.64'- <br />110' <br />Goodmiller #2 Pit Nov 2014 U -4 <br />