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Advanced B(*ING LOG
<br /> ,., GeoEnvironmental, Inc. BOREHOLE NO.: MW-10
<br /> -7 837 Shaw Road, Stockton, CA 95215
<br /> (209) 467-1006 FAX: (209)467-1118 TOTAL DEPTH: 50 feet
<br /> Project: RALPH SQUARE-BUI Drilling Co.: Mitchell Drilling Environmental, Inc.
<br /> Site Location: 2122 South Airport Way Rig/Auger Type: CME75
<br /> Stockton, California Logged By: REN
<br /> Reviewed By: WRL
<br /> Project No.: AGE-NC-07-1537 Date(s) Drilled: 20 March 2008
<br /> Notes: s Water Level Before Drilling
<br /> = Water Level After Drilling
<br /> Depth Sample Blows PID Soil USCS Class and Well Well
<br /> ID (per 6") (ppm) Symbol Soil Description Completion Description
<br /> 0
<br /> Well cover cristy box
<br /> Cement grout seal from
<br /> -5 — MW 10-5 6-12-20 0 ML:Yellow-Orange Brown,Dry,CLAYEY SILT;low .5'to 26'bsg.
<br /> plasticity,high toughness,stiff to hard consistency,no
<br /> hydrocarbon(HC)odor.
<br /> CH:Dark-Brown,Dry,CLAY;high plasticity and
<br /> -10 MW10-10 10-12-21 0 toughness,stiff to hard consistency,no HC odor.
<br /> CL:Yellow-Brown,Dry,SILTY CLAY;medium to
<br /> high plasticity and toughness,hard consistency,no HC
<br /> odor.
<br /> -15 MW 10-15 6-13-21 0 CL:Yellow-Orange Brown,Dry,SILTY CLAY;
<br /> medium to high plasticity and toughness,hard
<br /> consistency,no HC odor.
<br /> -20 MW 10-20 7-15-35 0 CL:Dark Yellow-Orange Brown,Dry,SILTY CLAY;
<br /> high plasticity and toughness,no HC odor.
<br /> -25 MW 10-25 18-24-30 0 ML:Dark Yellow-Orange Brown,Moist,SANDY
<br /> SILT;fine poorly graded sand,stiff consistency,no HC
<br /> odor. Bentonite seal from 26'to
<br /> 28' bsg.
<br /> -30 MW 10-30 7-14-20 0 CL:Dark Brown,Dry to Slightly Moist,SILTY CLAY;
<br /> high plasticity and toughness,hard consistency,no HC
<br /> odor.
<br /> -35 MW 10-35 9-14-26 0 CL:Yellow-Orange Brown,Dry to Slightly Moist,
<br /> SILTY CLAY with SAND;low to medium plasticity, #2/12 sand from 28'to
<br /> medium toughness,5%fine sand,no HC odor. 50'bsg.
<br /> -40 MW 10-40 16-24-39 0 1111111 ML:Yellow-Orange Brown,Wet,SANDY SILT;fine
<br /> poorly graded sand,low plasticity and toughness,no HC Screened interval from
<br /> odor. 30'to 50'bsg.
<br /> -45 MW 10-45 23-38-50 0 CL:Yellow-Orange Brown,Moist to Wet,SILTY
<br /> CLAY;medium to high plasticity,medium toughness, -
<br /> hard consistency,no HC odor.
<br /> -50 MW 10-50 16-25-50 0 CL:Yellow-Orange Brown,Moist to Saturated,SILTY X. Cap at 50'.
<br /> CLAY;high plasticity and toughness,hard consistency,
<br /> no HC odor.
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