REP36419

• Permit No: C1980007
• IBM Index Class Name: Report
• Doc Date: 7/9/1981
• Doc Name: Geotechnical Site Evaluation for Proposed Surface Facilities
• From: Chen and Associates
• Permit Index Doc Type: STABILITY REPORT
• Media Type: D
• Archive: No

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deposits within the valley bottom and fine to coarse co
' higher plateau area. Topsoil depth ranged from approximately 1/2 to
2 feet within the valley bottca area to as deep as 5 feet in the
' plateau area. Existing fill was also encountered in proximity to the
Bear Mine and railroad spur areas between depths 1 to 8 feet. The
fill consisted of cla
ravel and coal waste
and
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The fine sands and silts encountered in the valley bottom are
generally loose to medium dense and extend to depths 3 to 14 feet.
The underlying coarse granular soils are relatively dense and range to
boulder size material. On the flatter plateau area, stiff to very
' stiff and medium plastic clays with scattered to frequent bedrock
fragments are rtost predominant. Gravel to boulder size rock fragment
material was
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soil n
th
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ioorings D-11 through D-15) and on the higher sloping areas (borings
I-2 and I-3).
' Sandstone with interbedded shale was encountered at depths 27.5
and 36 feet in the valley bottom area (borings J-1 and B-1) and at
19 feet near the water storage tank (boring I-2). Bedrock was not
encountered in the remaining pond areas to the depth explored,
2
5 feet. Clay soils were encountered along the upper road section in
borings A-6, A-7 and A-8.
Sales obtained during the exploration program wire subjected to
1 various laboratory tests to determine their standard properties, shear
strength characteristics, permeabilities and settlement/swell poten-
tial. Results of laboratory testing are presented on Figs. 11
through 44 and summarized on Tables I through IV.
'

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