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• Stations 0 +40 through 2 +60 consisted of moderately fractured biotitic gneiss on <br />the lower 50 feet of the highwall. The remaining portions of the highwall (up <br />to 100 feet) are moderately fractured granitic gneiss. The foliation strike varies <br />in this area due to minor folding and ranges from 160 to 210 degrees. Foliation <br />dips averaged 25 degrees southeast to northeast. Foliation spacing ranges <br />approximately 4 to inches more than 2 feet, and foliation apertures were tight <br />and slightly rough to very rough. The primary joint set strike ranges from 320 <br />to 350 degrees and generally dips from 50 to 90 degrees southwest. A second <br />primary joint set is evident in this area and exhibits a strike of 220 to 320 <br />degrees with dips of 80 to 90 degrees southwest to southeast. The spacing of <br />the primary joint sets varied widely, but averaged approximately 18 inches. <br />Joint apertures were tight to moderately open with slightly rough to rough <br />faces. <br />• A secondary joint set is evident in this area and exhibits an average strike of 90 <br />degrees with an average dip of 70 degrees north. <br />Small blocks may form in this area due to the orientation of the highwall and jointsets of <br />the rock. These blocks are anticipated to be limited in size, and should be retained on the <br />bench below the highwall. Due to the moderately to highly fractured nature of the rock, <br />raveling is to be expected in this area. Raveling from this zone should be retained on the <br />bench below the highwall and is anticipated to cause only local operational delays. <br />• Stations 2 +60 through 2 +90 consisted of moderately fractured biotitic gneiss on <br />the lower 20 feet (station 1 +70) to 5 feet (station 2 +40). The remaining <br />portions of the highwall (up to 100 feet) are moderately fractured granitic <br />gneiss. The foliation strike in this area varies due to minor folding averages <br />240 degrees with an average dip of 25 degrees southeast. Foliation spacing <br />ranges approximately 4 inches to more than 2 feet, and foliation apertures were <br />tight and slightly rough to very rough. The primary joint set strike averages 40 <br />degrees and generally dips from 80 to 90 degrees northwest. A second primary <br />joint set strike averages 135 degrees and generally dips 80 to 90 degrees <br />northeast. The spacing of the primary joint sets varied widely, but averaged <br />approximately 18 inches. Joint apertures were tight to moderately open with <br />slightly rough to rough faces. <br />• Two secondary joint sets are present in this section of the highwall. The joint <br />sets have average strikes of 150 and 350 with average dips of 65 degrees <br />northeast and 58 degrees southwest, respectively. The spacing of the secondary <br />joint sets ranged from approximately 2 to 7 feet. Joint apertures were tight to <br />moderately open with slightly rough to rough faces. <br />Small blocks may form in this area due to the orientation of the highwall and jointsets of <br />the rock. These blocks are anticipated to be limited in size, and should be retained on the <br />bench below the highwall. Due to the moderately to highly fractured nature of the rock, <br />raveling is to be expected in this area. Raveling from this zone should be retained on the <br />bench below the highwall and is anticipated to cause only local operational delays. <br />- 5 - <br />Morrison Quarry Annual Report 2011 <br />P. \23514\ 133- 23514-12002 \ Deliverables \Delry -0I - Annual Report \Annual_Report_2011 _Geotech doc <br />January 2012 <br />