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Advanced BORING LOG
<br /> GeoEnvironmental, Inc. BOREHOLE NO MW-1
<br /> 837 Shaw Road,
<br /> Stockton, CA 95215
<br /> (209)467-1006 FAX (209) 467-1118 TOTAL DEPTH 45 FEET
<br /> Project Proposed EL DORADO APARTMENTS Drilling Co Mitchell Drilling Environmental
<br /> Site Location 2450 South El Dorado Street Rig/Auger Type CME 75HT
<br />' Stockton, California Logged By P Dotson
<br /> Reviewed By C Lee
<br />' Project No AGE-NC-02-0946
<br /> Date(s) Drilled 20 February 2003
<br /> Notes MW-1 completed as 2-tech groundwater momtortng wel = Water level during drilling Page 1 of I
<br />' = Water level in completed well
<br /> Depth Sample Blows PID Soil USCS Class and Well Well
<br />' ID (per 6") (ppm) Symbol Soil Description Completion Description
<br /> 0
<br /> CL/ML SILTY CLAY,dark yellowish brown,
<br /> medium toughness,medium plasticity,trace micas,
<br /> MW1-5 6/16!12 0 damp,no petroleum hydrocarbon(HC) odor, 100%
<br /> recovery
<br /> MUCL CLAYEY SILT,moderate yellowish brown,
<br /> low toughness,low plasticity,micaceous,trace fine
<br /> 10— MW1-10 9/12/1'7 0 sand,damp,no HC odor, 100%recovery Cement grout seal from
<br /> 5'to 21'bsg
<br /> SC CLAYEY SAND,moderate yellowish brown,
<br /> approximately 40%lines,fine sand,some silt,damp,
<br /> -T s MWI-15 9/14/20 0 no HC odor,100%recovery
<br /> tSC CLAYEY SAND,moderate yellowish brown,
<br /> 2 0 approximately 15%fines,fine to medium sand,damp
<br /> MWI-20 6/11/22 0 to moist,no HC odor, 100% recovery
<br />' CUML Shoe contained SILTY CLAY Bentonite seal from 21'
<br /> to 23' bsg
<br /> CL/ML SILTY CLAY,moderate yellowish brown,
<br /> medium toughness,low plasticity,micaceous,trace
<br /> 25— MWI-25 12/18/25 0 fine sand,damp,no HC odor, 100%recovery
<br /> CL LEAN CLAY,grayish brown,medium 43/12 sand from 23'to
<br /> -30—
<br /> toughness,medium plasticity,moist,no HC odor, 45'bsg
<br /> MW 1-30 7111/]6 D 100%recovery Color change in shoe from grayish
<br /> brown to bluish gray
<br /> CLJML SILTY CLAY,olive gray,medium
<br /> -35— toughness,low plasticity,trace micas,moist to
<br /> MW 1-35 8/12/20 0 saturated,no HC odor,100%recovery
<br />' Screened interval from
<br /> MULL CLAYEY SILT,dark gray,micaceous, 25'to 45'bsg
<br /> approximately 10 to 15%fine sand,saturated,no HC
<br />' 40 MWI-40 9/10/11 0 odor, 100%recovery
<br /> CL/ML SILTY CLAY,olive gray,medium
<br />'
<br /> 45— toughness medium plasticity,trace micas,saturated,
<br /> - M W l-45 11/20/21 0 no HC odor,100%recovery Cap at 45'
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