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can be steepened from ±3:1 to 1:1 • <br />if needed. <br />13+80 to 16+00 Minor fill on colluvium. At <br />16+00 cross section indicates a <br />side-hill cut at about 3:1; this <br />cut can be steepened to as much <br />as 1:1 to avoid excessive <br />erosion. <br />16+00 to 20+00 Shallow through-cuts in sandstone <br />and shale with former probably <br />predominant. Strike of bedrock <br />if encountered should be about N- <br />S and dip about 3° to 10° w. <br />Strike intercept with centerline <br />about 50°. Cut slopes could be <br />steepened from about 2.8:1 to 3:1 <br />to 1.5:1 to 1:1 to avoid <br />excessive erosion. <br />20+00 to 24+70 Fill primarily on colluvium and <br />alluvium. <br />24+70 to 28+30 Shallow parts of cut probably all <br />in colluvium; deeper cuts in <br />weathered bedrock dipping • <br />parallel to subparallel to cut. <br />Cut slopes could be steepened <br />from about 2.8:1 to 3:1 to 1.5:1 <br />to 1:1 to reduce erosion. <br />28+30 to 35+70 Fill primarily on colluvium. <br />Shallow cuts will be in colluvial <br />material and weathered shale. <br />35+70 to 38+30 Cuts in southern part of reach <br />probably all in colluvium; in <br />northern part of cut may find <br />weathered bedrock in deeper cuts. <br />Cuts shown at about 2.3:1 to 3:1 <br />could be steepened to 1.5:1 to <br />1:1 to reduce erosion. Dip <br />parallel or subparallel to cut <br />slope. <br />38+30 to 40+60 Fill in narrow steep drainage; <br />will need culvert. <br />40+60 to 52+30 Shallow through-cuts on north <br />changing to side hill cuts toward <br />south; probably all in colluvium. <br />Cuts slightly steeper than 3:1 • <br />can be steepened if necessary. <br />20 <br />