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Advanced BORING LOG
<br /> GeoEnvironmental, Inc.
<br /> BOREHOLE NO MW-4
<br /> 4005 North Wilson Way, Stockton, CA 95205
<br /> (209)487-1006 FAX (209)467-1118 TOTAL DEPTH 35'
<br />' Project Prem Dor Drilling Co Cascade Drilling,Inc
<br /> Site Location 433 West Scotts Avenue Rig/Auger Type LAR
<br />' Stockton, California i Logged By 7o'1 M Chapman
<br /> Reviewed By Calvin F Lee
<br /> Project No AGE-NC-02-0950
<br /> Date(s) Drilled 21 July 2005
<br />' Notes Below surface grade(bsg) sz Water level during drilling Page 1 of 1
<br /> = Water level in completed well
<br />' Depth Sample Blows PID Soil USCS Class and Well Well
<br /> p ID 1 ft (ppm) Symbol Soil Description Completion Description
<br /> 0 Water-tight cap and
<br /> traffic rated cnsty box
<br />' Cement grout seal from
<br /> 0 5'to 11'bsg
<br /> -S MW4-5 10/12/15 0 UPPER BACKFILL Dark brown,FILL' MATERIAL, 2"Schedule 40 PVC moist,appx 10%gravel,no hydrocarbon(HC)odor blank well casing
<br /> ML Brown,CLAYEY SILT,moist,low plasticity, g"Boring diameter
<br /> low consistency,low toughness,no HC odor
<br /> Brown,
<br /> low
<br /> MW4-10 9/11114 0 ML CLAYEY SILT,moist,low plasticity,
<br /> consistency,low toughness,no HC odor
<br /> �0/
<br /> Bentonite seal from 11'
<br /> to 13'bsg
<br /> t -15 MW4-15 12/12/15 0 ML Brown,CLAYEY SILT,moist,low plasticity, —
<br /> low consistency,low toughness,some white mottling,
<br /> no HC odor
<br /> t 3 Lone sand from
<br /> 1
<br /> 13'to 36 55'bsg
<br /> -20— MW4-20 $19/11 0 ML Brown,CLAYEY SILT,saturated,low
<br /> plasticity,low consistency,low toughness,trace
<br /> fine-grained sand,no HC odor
<br /> SM Dark brown,SILTY SAND,saturated,poorly
<br /> 0 020"slotted screen
<br />' -2 5 MW4-25 10/10/12 0 p y from 15'to 35'bsg
<br /> graded,fine-grained,eppx 25%silt,no HC odor
<br />' -
<br /> 30— MW4-30 9110112 0 SM Dark brown,SILTY Ehnd
<br /> saturated,poorly
<br /> graded,fine-grained,appxilt,no HC odor
<br /> ML Brown,CLAYEY SIrated,low
<br /> plasticity,low consistencyughness,no HC
<br />' odor
<br /> - 35 MW4-35 919112 0 CH Dark gray-blue,CLAst,high plasticity, Cap at 35'bsg
<br /> high consistency,high touno HC odor
<br /> 1
<br /> ® SP Brown,SAND,saturorly graded,fine-grained,no HC odor
<br /> CH Dark gray-blue,CLAmoist,highplasticity,high consistenctoughness,no HC
<br /> odor
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