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Advanced B(OING LOG
<br /> GeoEnvironmental, Inc. BOREHOLE NO.: MW-7
<br /> 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: 19 March 2008
<br /> Notes: 4 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 % Well cover cristy box
<br /> Cement grout seal from
<br /> CH:Dark Yellow-Orange Brown,Dry,CLAY;high .5'to 26'bsg.
<br /> —5 MW7-5 7-13-18 0 plasticity and toughness,stiff consistency,no
<br /> hydrocarbon(HC)odor.
<br /> —10 MW7-10 17-24-40 0 CH:Yellow-Orange Brown,Dry,CLAY;high plasticity
<br /> and toughness,stiff to hard consistency,no HC odor.
<br /> -15 MW7-15 10-30-56 0 ML:Yellow-Brown,Dry,SILT with SAND;fine,well
<br /> graded sand,1/8"gravel,very loose consistency,no HC
<br /> odor.
<br /> CL:Tan-Brown,Dry,SILTY CLAY;medium to high
<br /> —20 MW7-20 14-28-32 0 plasticity,high toughness,hard consistency,no HC
<br /> odor.
<br /> CH:Tan-Brown D CLAY;high lacticity and
<br /> -25 MW7-25 7-26-39 0 Dry, g P
<br /> toughness,no HC odor.
<br /> Bentonite seal from 26'to
<br /> 28' bsg.
<br /> ML:Yellow-Orange Brown,Dry,SILT;low to medium
<br /> —30 MW7-30 10-15-23 0 plasticity,low toughness,stiff consistency,no HC odor.
<br /> ML:Red-Brown,Dry,SILT;low plasticity and
<br /> —35 MW7-35 15-21-29 0 toughness,no HC odor. #2/12 sand from 28'to
<br /> 50'bsg.
<br /> —40 MW7-40 10-16-22 0 CL:Yellow-Brown,Slightly Moist,SILTY CLAY;high
<br /> plasticity and toughness,hard consistency,no HC odor. Screened infrom
<br /> 30'to 50'bsg.
<br /> —45 MW7-45 13-17-28 0 CL:Dark Yellow Brown,Wet to Moist,SILTY CLAY;
<br /> medium to high plasticity,high toughness,stiff to hard
<br /> consistency,no HC odor.
<br /> ML:Dark Yellow-Orange Brown,Wet to Slightly Cap at 50'.
<br /> —50 MW7-50 24-33-50 0 Moist,SILT with SAND;well graded fine sand,very
<br /> hard consistency,no HC odor.
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