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Plate 2 - Rock Slope Analysis Benches 13, 12, 11, 10, 9, 8, 7, and 6 and General Conditions of North Quarry - January 2000 <br />Morrison Quarry <br />CAMAS /Cooley Gravel Division <br />1999 DMG Annual Report <br />Geotechnical Addendum <br />March 2000 <br />LEGEND <br />72: <br />+Iy ' <br />75.'> <br />rt <br />Strike (degrees- azimmth) and dip of joint (degrees from horizontal) <br />Strike (degrees - azimuth) and dip of foliation joint (degrees from horizontal) <br />Strike (degrees- azimmth) and dip of vertical joint (degrees from horizontal) <br />Axis of syncline fold (plunge direction indicated by arrow) <br />Axis of anticline fold (plunge direction indicated by arrow) <br />Location Description <br />A Dike (10 ft wide, moderately to highly fractured, mafic composition), N80-W, 71-SW <br />Il Bench highwall covered with talus. Approx. 40 ft long extension crack, 1 to 6 inches wide, 5 ft from end <br />C Backlill placed 5 -8 ft from top of highwall. Approx. 20 ft wide. <br />1) Dike (8 inches wide, highly fractured and extremely weathered, mafic composition), N63 °W, 80 1SW <br />E Dike (20 ft wide, moderately to highly fractured, mafic composition), orientation undetermined. <br />F Slope failure (approximately 60 feet wide and covered with talus) <br />G Major fracture (approximately 40 ft long, clay filling 0.5 -3 inches thick, separates mafic and felsic rock material) <br />fI Slab failures (several failures, 30 -40 ft in height with continuous surfaces) <br />Major fracture (continuous through entire highwall face, iron oxide staining) <br />•1 Dike (10 -15 ft wide, moderately to highly fractured, mafle composition, groundwater discharge from the dike), N73 °E, vertical <br />K Foliation generally striking parallel to the orientation of the bench and dipping into the hill. Area is highly fractured <br />11 Major fracture (approximately 175 ft long, clay filling I to 3 inch thick, continuous, potential failure) <br />0 <br />m <br />a^ <br />3 <br />N, <br />w <br />