PERMFILE110718

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Section_Exhibit Name: Exhibit 70 Appendix E Boring Logs
• Media Type: D
• Archive: No

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ELEVATION ft DATE 10 19 95
ma ML• d O N
0 (1'P) BROWN TOPSOIL
(4 inches)
(CL) LIGHT BROWN CLAY
very silty, low plastiaty, mottled, dry
S- Shelby tube hit rock
Shelbyl8'/ 18'
y (Sly BROWN to LIGHT BROWN SILTY
SAND
~ ~~/~. 10 trace of clay, trace of sandstone cobbles, fine-
to medium-graic 'dense, dry
Started hitting cobh:._ at 113 ft.
RQD=25/36=69% Auger refusal at 12_ .:. oa rock, switched to core
15 WHTI'E to GRAY SANDSTONE
_ blocky, Gttle fraUUred, very hazd, moderately
_ ~ strong, little weathered
RQD=8/60=L3% _~' Drilling indicates gravel, end wre run at 155 ft
(G>~ BROWN to GRAY GRAVEL
trace of occasional coarse-grained sand, round
20 ~ to subround,chipsfrom boulders and cobbles,
_ ~ End core run at 7A.0 ft.
RQD=16/60=27% _
~ Terminated boring at 25.0 R, backfilled wii
auger cuttings, cement plug and topsoil, no
piezometer installed
• D Harding Lawson Associates Log of Boring RPE6 FlGURE
Engineering and
Ernironmenrai Services Mountain Coal, West Elk Mine 6
` Somerset, Colorado
DRANM JOB NUMBER APPROVED DATE RENSED DATE
LDZ 32640.10 12/95