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-24- <br />• <br />TABLE 2: RECOMMENDED CUT SLOPES <br />MAX. CUT SLOPE <br />FORMATION CUT N O T E S <br />HEIGHT X(H):1(V) DEGREES <br />SANDSTONE, Recommended slope is <br />SOUND, UN- an overall slope. <br />WEATHERED - a 1 760 Bench slopes may be <br />steeper. <br />INTERBEDDED Stabilize crest if <br />SANDSTONE & soil cover subject <br />SHALE - ~ 1 63° to sloughing <br />TERRACE <br />*) <br />0 <br />DEPOSITS 60' 3/4 : 1 56 <br />• COLLUVIAL *) <br />° <br />SOILS 60' 1 1 45 <br />*) If cut height exceeds 60', use benching or other suitable <br />stabilization. <br />4.9 PROTECTION AGAINST SLOUGHING <br />As discussed several times in this report, the recommended <br />cut slopes and configurations will not eliminate the hazard <br />of local sloughing and erosion of the cut faces in soils or <br />weathered rock. It has to be expected that sloughing will occur <br />during the lifetime of the road cuts. Sloughed material will <br />accumulate at the toe of the cuts. If the drainage ditch is <br />• located immediately below the toe of the cut, it will be slowly <br />