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Advanced BORING LOG
<br /> GeoEnvironmental Inc.
<br /> 837 Shaw Road, Stockton, CA 95215 BOREHOLE NO MW-'4
<br /> (209)467-1006 FAX (209)467-1118 TOTAL DEPTH 78'
<br /> 1 Project NATIONAL FREIGHT Dates Drilled 14 February 2002
<br /> 1 Project No AGE-NC-98-0497 Page 2 of 3
<br /> Depth Sample Blows PID Sod USCS Class andW ell Well
<br />' ID (per 6") (ppm) Symbol Sod Description Completion Descnption
<br /> I
<br /> _ SM/ML SANDY SILT/SILTY SAND,approximately
<br /> _ equal percentages fine sand and fines,moderate brown,
<br /> —_ — damp,hara/dense to very dense,70%recovery
<br /> -30 MW4-30 12/27/33 0
<br />' CL SILTY CLAY,low plasticity,medium toughness,
<br /> tmca of rocas,dark yellowish brown,damp,hard,
<br /> 100%recovery
<br />' -35— MW4-35 15/30/43 0
<br /> tCL Middle brass sleeve contained SILTY CLAY,
<br /> medium plasticity,medium toughness,micaceous,
<br /> moderate yellowish brown,damp,hard,70%recovery
<br />' -4 0 MW4-40 17/30/41 D
<br /> S1 Slide contained SILTY SAND/SANDY SILT,
<br /> approximately equal percentages of tine sand and fines,
<br /> moderate yellowish brown,damp
<br /> SM SILTY SAND,fine sand,approximately 40%
<br /> fines,moderate yellowish brown,moist,very dense,
<br />' 70%recovery
<br /> -45 MW4-45 25/50-6 0
<br /> —— ML SANDY SILT,approximately 40%fine sand,
<br /> —_—_ moderate brown,moist,hard,50%recovery
<br />' -50 MW4-50 21/50-6 0
<br /> ML Middle brass contained SILT with SAND, Bentonite seal from 51'
<br /> approximately 25%fine sand,moderate brown,moist, to 56' bsg
<br />' hard,70%recovery
<br /> -55 MW4-55 16/29/40 0
<br /> SF Bottom brass sleeve contained POORLY GRADED
<br /> SAND,trace of fines,fine sand,moist,moderate
<br />' brown,dense,70%recovery
<br /> CL SILTY CLAY,medium plasticity,medium
<br />' toughness,trace of micas,light olive gray,moist,hard,
<br /> 85%recovery
<br /> -&0 tvrwa_A,
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