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Barr Engineering Company <br />4700 West 77th Street LOG OF BORING SB-06-06 <br />BARR Minneapolis, MN 55435-4803 <br />~ Sheet 4 of 4 <br />Project: Monument Dam Location: Paonia, CO client: Mountain Coal Company <br /> Barr Project Number: 06/26-067 ~ STANDARD PENETRATION NATURAL DRY <br /> a~ TEST DATA DENSITY <br />w ~ o ~ ~ o N in blowsHt OO (pcf) it <br /> w MATERIAL DESCRIPTION ~ a > o ~0 20 ao ao cos ~~s ~2s <br />0 <br />~ <br />a <br />Z ~ <br />~ (ASTM D2488) a ~ <br />d O ~ °~ a `o SHEAR STRENGTH, ksf Water Content, <br />w C7 ~ u1 OP X UC D TV CIE WP WN W~ <br /> ~ VSO VSR O <br /> 90 1 2 4 20 40 60 <br /> LEAN CLAY (CL), trace fine- to coarse-grained sand, trace <br /> to with fine- to coarse-grained gravel (shale and sandstone), g2 0 <br /> grayPorown/tan/oxidation, saturated, very stiff <br /> / <br /> <br /> <br /> <br />7255 95 / <br /> <br /> 21 21 <br /> 7253.0 <br /> End of boring at 97.0 feet, no more augers, but very difficult 97.0 <br /> drilling (near refusal?) <br /> 100 <br /> 105 <br /> 110 <br /> 115 <br /> 120 <br />Completion Depth: 97.0 Remarks: <br />Date Boring Started: 7/10/06 <br />Date Borin <br />Com <br />leted: 7/11/06 <br />g <br />p <br />Logged By: JDG SAMPLE TYPES WATER LEVELS <br />Drilling Contractor: DA Smith <br />illi <br />M <br />D <br />h <br />d <br />HSA <br />m Auger Cutting 'Shelby Tube SZ While Drilling: 17.3 <br />- <br />r <br />ng <br />et <br />o <br />: End of Drilling: <br /> ® Split Spoon ~ Rock Core <br /> hrs After Drilling: <br />the stratification lines represent approximate boundaries. The transition may be gradual. <br />