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LEGEND:
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<br />® Topsoil,
<br /> Clay (CL), slightly sandy to sandy, silty, very stiff to hard,
<br />© dry, brown, calcareous, porous in places above seven feet,
<br /> Clay (CL), very sandy to sand (5 C), clayey, silty, very stiff to
<br /> hard, dry, brown, calcareous, porous in places above seven feet,
<br /> Sand (SM), silty, medium dense, dry, brown, porous in places
<br /> above seven feet,
<br />® Claystone, silty, interbedded siltstone, very hard, dry, gray
<br /> to light brown,
<br />a Sandstone, interbedded claystone, very hard, dry, tan,
<br /> Siltstone, fine sand grains, very hard, dry, light brown,
<br /> Undisturbed drive sample, The symbol 12/12 indicates that 12 blows
<br /> of a 140-pound hammer falling 30 inches were required to drive the
<br /> sampler 12 inches,
<br />L
<br />^ Disturbed standard split spoon sample,
<br />® Indicates P, V, C, pipe installed to depth shown,
<br />Practical rig refusal,
<br />NOTES:
<br />1, Test holes were drilled on November 11-15, 1980 with a 4-jnch diameter
<br />continuous flight power auger,
<br />2, Elevations were taken from topography provided by the client,
<br />3. No free water was found in the test holes at the time of drilling,
<br />4, WC = Water Content (%);
<br />DD ~ Dry Density (pcf);
<br />-200 Percent Passing No, 200 Sieve;_
<br />LL = Liquid Limit (%);
<br />Pl ~ Plasticity Index (%)
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<br />GEOTECHNICAL INVESTIGATION
<br />LEGEND AND NOTES
<br />DESERADO -COAL WASTE AREA
<br />then and associates, inc.
<br />CONSULTING ENGINEERS
<br />f• {. 2YM1 DCMVL{, CO. •O!!]
<br />Job Numbo Dat{. Fig. A-4
<br />27,368 Die. 7980
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