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,r ~I <br />u <br /> a <br />~~ <br />• o. • e + <br />IDS L9 d . <br /> <br />\D <br />••• <br />4 _ <br />• <br />• • • > - `• L <br />7t ton « n <br />or uue o n <br />-7 Ce• M • • <br />m6 ML• 0. CI N <br /> 01'l <br />7 18'/18' <br />14 <br />19 <br />9 18'/18' <br />11 <br />12 <br />43 18'/18' <br />24 <br />12 <br />EQUIPMENT Acker MPS <br />SURFACE <br />ELEVATION fl DATE 10 21 95 <br />(SP) BROWN to DARK BROWN SAND <br />medium- to coarse-grained, traa of silt, trace <br />of gravel, occasional cobble, dry <br />Dense <br />Medium dense <br />Dease,voa-o~dde staining <br />(SP/SM) BROWN to DARK BROWN RED <br />SAND <br />10 alternating (1 to 1-1/2') bands of clayey silt, <br />~ 18'/18' ~ Vace of gravel, medium- to fine-grained, <br />~ 'von-o~dde staining, medium dense, moist <br />At 21.0 Ct., drilling encountered large cobbles <br />RQD =4/30=13% Auger re[usal at 22.0 ft., switched to wre barrel <br />(GP) GRAY to BROWN GRAVE[, and <br />RQD =0/60 = 0% <br />subangulazto subrounded, occasional boulder, <br />~' <br />Eud core run at 24.5 ft. <br />30 Ead core run at 29S ft. <br />Boring terminated at 29S ft., backfdled with auger <br />cuttings, cement plug, topsoil, no piezometer <br />installed <br />• Harding Lawson Associates Log of Boring RPE3 FlGURE <br />Enpineerinp and ^ <br />~~= Ernironmental Services Mountain Coal, West Elk Mine 3 <br />Somerset. Colorado <br />