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• permit for unconsolidated materials and exceptions would have to be <br />justified to the regulators. In rock cuts the steepest slopes <br />should probably not exceed 0.5:1 although the regulatory limit is <br />0.25:1. Steepening slopes would reduce the surface area exposed to <br />rainfall runoff and snow melt, thus increasing Stability. <br />The most critical aspect in design and construction of this <br />alignment is to provide adequate surface drainage to remove water <br />from cuts (and fills) as quickly as possible and with minimal <br />erosion. <br />The following uniform reaches were scaled from a 1"=400' <br />profile of the alignment. Cross sections at specific stations <br />along the alignment were also available and were reviewed with <br />respect to geology. <br />n <br />LJ <br />Haul Road A - Uniform Reach Descriptions <br />Stations <br />Descriptions <br />0+00 to 3+90 Minor alluvium in lowest part of <br />fill section; minor cut in <br />colluvium at origin. Culvert <br />needed. <br />3+90 to 7+00 Cut in alternating sandstone and <br />shale with latter probably <br />predominating. Strike of bedrock <br />in cut should be about N-S and <br />dip from 3° to 10° W. Strike <br />intercept with centerline about <br />50°. Through-cuts are at ±3:1 <br />slopes and can be steepened to <br />1:1 if needed. <br />7+00 to 10+50 Major fills on colluvium of <br />shale/sandstone bedrock. <br />10+50 to 13+80 Shallow cuts; probably all in <br />• weathered material with little or <br />no bedrock down to grade. Cuts <br />19 <br />