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3.3.3 Haul Road Highwall 7335 — 7270 <br />The Haul Road Highwall 7335 — 7270 scanline is approximately 530 feet long and divided <br />into four distinct sections. <br />Sta. 0 +00 to 1 +10 trended 060 (north 60 degrees east). This section of the highwall <br />was not mappable due to overburden, mine waste, and/or rockfall obscuring the <br />wall. However, it is assumed the highwall conditions are similar to adjacent <br />observable /mappable sections. <br />Sta. 1 +10 to 2 +20 consisted of primarily of granitic rock with localized gneissic <br />pockets above approximately elevation 7325. Granitic rocks observed within the <br />highwall typically exhibited moderate compressive strength (estimated) and very <br />poor quality RQD. The trend of the highwall was 060 (north 60 degrees east). Two <br />primary joint sets were evident. The first set exhibited a strike ranging from 240 <br />degrees to 270 degrees with dips ranging from 65 to 75 degrees. The spacing <br />between of these joints varied, but was typically very close to close. The <br />persistence of the joints was also widely variable, but was typically medium. <br />Apertures of the joints were open with slightly rough to rough surfaces and were <br />highly to completely weathered. The second primary joint set exhibited a strike <br />ranging from 125 degrees to 150 degrees with dips ranging from 60 degrees to 75 <br />degrees. This joint set had similar properties to primary joint set 1— very poor <br />quality RQD, very close to close spaced joints, medium persistence, open joint <br />apertures, and slightly rough to rough rock surfaces, and high to complete <br />weathering. <br />Sta. 1 +10 to 2 +20 consisted of primarily of granitic and biotitic gneiss below <br />elevation 7325. Gneissic rocks observed within the highwall typically exhibited <br />high to very high compressive strength (estimated) and poor to very poor quality <br />RQD. The trend of the highwall was 060 (north 60 degrees east). Two primary <br />joint sets were evident. The first set exhibited a strike of 80 degrees with a dip of <br />40 degrees. The spacing between of these joints varied, but was typically <br />moderate. The persistence of the joints was also widely variable, but ranged <br />around medium. Apertures of the joints were moderately open to tight with slightly <br />rough to rough surfaces and were moderately to slightly weathered. The second <br />primary joint set exhibited a strike ranging from 320 degrees to 330 degrees with <br />dips ranging around 70 degrees. This joint set had similar properties to primary <br />joint set 1— very poor to poor quality RQD, widely spaced joints, medium <br />persistence, moderately open to tight joint apertures, and slightly rough to rough <br />rock surfaces, and slight to moderate weathering. Foliations exhibited a strike <br />ranging from 10 to 25 degrees with dips ranging around 10 degrees. The spacing <br />between of the foliation varied, but was typically very close to wide. The <br />persistence of the foliation was also widely variable, but ranged around medium. <br />Apertures of the foliation were moderately open to tight with slightly rough to <br />rough surfaces and were moderately to slightly weathered. <br />GEI Consultants, Inc. 10 January 2014 <br />2013 Morrison Quarry Annual Report <br />