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Advanced BORING LOG
<br />' y GeoEnvironmental, Inc. BOREHOLE NO MW-4
<br /> =tel 4005 North Wilson Way, Stockton, CA 95205
<br />' (209) 467-1006 FAX (209)467-1118 TOTAL DEPTH 351
<br /> Project Vanco Truck& Auto Plaza. Drilling Co Mitchell Drilling Environmental
<br />'
<br /> Site Location 1033 West Charter Way Rig/Auger Type CME-75/8-inch HSA
<br /> Stockton, California Logged By Jo'l M Chapman
<br />' Project No AGE-NC-02-0962 Reviewed By Calvin LeeDate(s) Drilled 29 July 2005
<br /> Notes xz Water level during drilling
<br />' Page 7 of 1
<br /> = Water level in completed well
<br /> Depth Sample Blows PID Soil USCS Class and Well Well
<br />' ID 1 ft (ppm) Symbol Soil Description Completion Description
<br />' 0
<br />'
<br /> –5 MW4-5 7/13/17 1 ML Brown,CLAYEY SILT,moist,low plasticity,
<br /> high consistency,low toughness,no hydrocarbon
<br /> (HC)odor Portland neat cement
<br /> from 0 5'to 11'bsg
<br /> –10 MW4-10 4/5/9 36 ; ML Brown,CLAYEY SILT,moist,low plasticity,
<br /> high consistency,low toughness,some HC staining
<br />' and white mottling,HC odor Bentonite seal from 11'
<br /> to 13' bsg
<br /> –15 MW4-15 416110 2 ML Brown,CLAYEY SILT,moist,low plasticity,
<br /> high consistency,low toughness,some HC staining
<br /> and white mottling,HC odor
<br /> I �
<br /> –20— MW4-20 5/7/10 1 f E ; ML Brown,CLAYEY SILT,moist,low plasticity,
<br /> high cons istcncy,low toughness,some HC staining, #3 sand from 13'to 35'
<br /> slight HC odor bsg
<br /> Q
<br /> –23— MW4-25 5/9/14 1 ML Brown,CLAYEY SILT,saturated,low
<br /> plasticity,high consistency,low toughness,some HC 0 010"slotted screen
<br /> staining,slight HC odor from 15'to 35'bsg
<br /> –
<br /> 30— MW4-30 6/7/10 1 SM Brown,SILTY SAND,saturated,low plasticity,
<br /> low consistency,low toughness,very fine-grained
<br /> sand,some HC staining HC odor
<br /> –35 MW4-35 3/6/8 8 SP Gray,SAND,saturated,poorly graded, End cap at 35'bsg
<br /> fine-grained micaceous,strong HC odor
<br /> f
<br /> I -40
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