2006-08-02_PERMIT FILE - C1980007 ‎(3)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 8/2/2006
• Doc Name: UMS, Inc. - Seismic Refraction Survey
• Section_Exhibit Name: Exhibit 75 SGARE Appendix D
• Media Type: D
• Archive: No

Mountain CSI Company -West Elk Mne
Sylvester Gulch Road Geotechnical Investigation
Figure 10. Correlation between seismic refraction profrle and borehole logging at Station 18+00, Green line
indicates surface. Red line indicates the acoustic impedance boundrny.
• By correlating borehole data with the results of the seismic refraction survey, higher velocities of the
second layer can be interpreted as probably that of weathered sandstone bedrock (Figure 10).
28+00
TY CLAY
CLAYEY SILT (ML)
Light brown, some fine sand and black organics,
sandstone fragments at 5
to 6 feet, stiff, non-plastic, mnist.
Shelby tube of iD l0 12
SANDY CLAY (CL) Possibly WEATHERED SANDSTONE o'
CLAYS70NE
Light brown, fine grained sand, some weather ^
•
av ,plastic, very stiff, moist _
SILTY CLAY (CL) Possibly WEATHERED CLAYSTONE
Brown to light brown, some fine sand and subon gut ar
fine gravel, trace block orgenics, stiff, plastic, moist,
Seismic Refraction Stfrvey
Summary of Operations
SILTY CLAY (CL) Possibly WEATHERED CLAYSTONE
Brown, sane free sand and large sandstone grovel,
little fine grovel and black organics, plastic, stiff, m
moist.
SILT (ML) -WEATHERED SHALE
Gray, non-plastic, laminar bedding, Nord, hiq'nly
weathered shale, moist.
r 1
LJ
l1MS, Inc.
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