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Barr Engineering Company <br />4700 West 77th Street <br />BARR Minneapolis, MN 55435 -4803 LOG OF BORING SB09 -12 <br />Sheet 4 of 4 <br />Project: Proposed Coal Handling <br />Location: West Elk Mine, Somerset, <br />I <br />Client: Mountain Coal Company <br />Facilities <br />CO <br />Barr Project Number: 06/261004 <br />STANDARD PENETRATION <br />NATURAL DRY <br />TEST DATA <br />DENSITY <br />w <br />a� <br />rn <br />o <br />-a <br />m <br />.2.-1 <br />N in blows /ft @ <br />(pcf) it <br />MATERIAL DESCRIPTION <br />0 <br />0 <br />a <br />> <br />10 20 30 40 <br />105 115 125 <br />Z <br />(ASTM D2488) <br />a <br />`` <br />F <br />z <br />> <br />o <br />O <br />SHEAR STRENGTH, ksf <br />Water Content, % <br />IJ,J <br />C <br />QP x UC A TV X <br />WP WN WL <br />VS o VSR O <br />1 2 3 4 <br />20 40 60 <br />90 <br />WELL GRADED GRAVEL WITH CLAY (GW -GC) Gravel with 90.0 <br />quartite, slate, igneous clasts up to 2 ". <br />' <br />• <br />92.0 <br />95 <br />100 <br />105 <br />110 <br />115 <br />1120] <br />Completion Depth: 92.0 <br />Remarks: <br />Date Boring Started: 6/29/09 <br />Date Boring Completed: 6/29/09 <br />SAMPLE TYPES <br />WATER LEVELS <br />Logged By: BWL <br />Auger Cutting ,Shelby Tube <br />While Drilling - <br />Drilling Contractor: Haztech <br />Drilling Method: HSA <br />End of Drilling: <br />Northing: <br />® Split Spoon n Rock Core <br />Eastin : <br />hrs After Drilling: <br />The stratification lines represent approbmate boundaries. The transition may be gradual. Revised March 19, 2010 <br />