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and granitic lithologies predominate. The highly schistose rocks weather to <br /> a residuum resembling soil in many characteristics. After denudation and <br /> stripping of surficial material and deeply weathered bedrock. the remaining <br /> bedrock should be resistant to erosion by running water. No prominent joints <br /> or joint sets were observed and no major faults trace through the area. <br /> ANTICIPATED SLOPE STABILITY <br /> The proposed excavation plan calls for benches to be dropped progressively <br /> down from east to west with highwalls up to 40 feet high and a slope ratio <br /> of 1/2:1. Bench widths will be 20 to 25 feet. The cut slope stability is <br /> expected to be good because the compositional layering and the foliation both <br /> dip back into the hillside at fairly steep angles and jointing or faulting is <br /> substantially absent. These factors will serve to eliminate planes of <br /> weakness along which earth and/or rock material could fall, slide or slump ' <br /> downslope. An existing cut immediately east of the graded portion of the site <br /> was observed to stand at near vertical angle with little evidence of gravitional <br /> movement of earth and rock material. <br /> Without the benefit of exploratory test drilling, it can not be guaranteed <br /> that the observed lithologies and structures will persist at depth and laterally <br /> into the hillside. However, outcrops observed along the western periphery of <br /> the site and considerably upslope (east) from the graded portion of the site <br /> exhibited similar characteristics to all other outcrops on the property. <br /> F. M. FOX & ASSOCIATES, INC. -- ..... Reviewed by: <br /> FLO/ ����,/� frL •L . GisTà14i <br /> FoQG J�.vLL�' <br /> Paul T. Banks, Jr. ice: • <br /> '{•i Bruce A. Florqui , P.E. <br /> Geologist i4?n 14412z�* Vice President <br /> PTB:klx ', II".O1At•';•'4� <br /> Copies: 3 '‘,`E' OF CO`p4 <br /> •. _ —_ JC 00782 <br /> Peterson!Elk Creek <br />