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,~ <br />e~ a <br />~~ <br />4 <br />EQUIPMENT Acker MPS <br />\v <br />• • •s• <br />• >- a <br />~ • <br />c - <br />SURFACE <br />ac <br />o• <br />-~ con <br />u u e <br />C•• <br />o <br />N . a <br />a e <br />• ^ <br />ELEVATION ft DATE 10 22 95 <br />ma ML• a O N <br /> - (TP) BROwN to sIACK TOPSOa <br /> roots (12 inches) <br /> (SP) BROWN to LIGHT BROWN SAND <br /> very silty, trace of clay, fine- to coarse-grained, <br /> occasional subrounded gravel, root holes, dry <br /> 5_ Shelby tube, encountered large cobble <br />Shelby 16' <br />Layers of gravel encountered at 7S ft. by auger <br />4 <br />4 <br />4 <br />21 <br />19 <br />17 <br />7 <br />7 <br />12 <br />18"/18" 10- Loose, moist <br />Drilling encountered numerous cobbles <br />(SP/GP) BROWN to DARK BROWN SAND <br />18'/18' 15 ~ very silty, trace of clay, gravel, fine- to <br />- coarse-grained, subrounded to subangular, <br />very dense, dry <br />Medium dense, occasional cobbles, moot <br />x./18. 20- _~ <br />Auger refusal at 21.0 ft., switched to core barrel <br />RQD=7/24=29% <br />RQD=30/ti0=50%25 <br />(GP) BROWN to GRAY GRAVEI. and <br />COBBLES <br />subroundcd to subaagular, dry <br />End core run at 23.0 ft. <br />BLACK to DARK BROWN COAL <br />very brittle, dull, moist <br />End core run at 28.0 ft. <br />Terminated boring at 28.0 ft., backfdled with sa <br />auger cuttings, cement, topsoil, installed slotted <br />piezometer to 28.0 ft. <br />40 <br />. ~ Harding Lawson Associates <br />Enpinaaring and <br />~'~ •~~ EnvironmenW Senixa <br />Log of Boring RPE1 <br />Mountain Coal, West Elk Mine <br />Somerset, Colorado <br />FlGURE <br />1 <br />