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CAMP DRESSER& McKEE Sheet 3 of 5
<br /> BOREHOLE LOG
<br /> OWN ARL-1A
<br /> Client: City of Stockton Project Name: Stockton,CA
<br /> Project Location: Austin Road Landfill Project Number. 2500-22118
<br /> e
<br /> ®
<br /> me Ec o, `2 Eo
<br /> Sample a Depth w 5 a w � Material
<br /> N Number (�) e a N 2.0
<br /> Description
<br /> 0
<br /> -20.0 iZ
<br /> 60 ML
<br /> -25.0
<br /> 65 ML Begin coring CME 5 ft barrel 4/4?
<br /> SILT,brown/dark brown(10 YR 3/3),trace fine sand,stiff,moist,
<br /> 60/39 highly disturbed,blocky,moderately plastic pods of fine sand.
<br /> CL transftlon to CLAY,yeAowish brown j_10 YR 516),nonplastic,white 111T
<br /> ® precipitate(callche)along fracture surface.
<br /> 70 ML SILT,yellowish brown(10 YR 5/4),trace fine sand,stiff,moist,
<br /> micaceous.
<br /> 60/33
<br /> fine sand interbed at 72.75',faint bedding,iron oxide stained
<br /> laminations.
<br /> -35.0 o recovery.
<br /> 75 ML As above,abundant white precipitate,weathered—slightly punky
<br /> (spongy)with 1 mm voids(10%volume),stiff to soft(at T7 ft).
<br /> 60/48 Groundwater encountered at 77'.
<br /> sample saturated,fine sand interbeds,black staining visible along
<br /> some near horizontal(10 deg.)bedding?surfaces,black staining
<br /> likely manganese oxide.
<br /> 80 ML As above,grades to SW at 83',cemented zone at 83.5',1 mm
<br /> voids cont.to 84'.
<br /> 60/60
<br /> •; SW WELL GRADED SAND,yellowish brown(10 YR 5/4),fine to
<br /> coarse grained,subrounded,sphericity moderate to low,
<br /> HPP RL-1A-GWI 5 85 ti SW predominantly quartz with 5%each of dark grains and mica
<br /> (muscovite),loose to medium dense,contact with ML iron oxide
<br /> stained—strong,saturated.
<br /> 60/18 12/12/97 0845,resume drilling;gw®80W bgs,approximately 3'
<br /> Of slough inside auger.
<br /> As above,strong bands of iron oxide staining 1.5°thick,saturated,
<br /> medium dense,screen recovered—no tip. trace gravel 0.25',
<br /> .50.0 moderate sphericity,subangular to subrounded.
<br /> 90 SM grades to SILTY SAND,pale brown(10 YR 6/3),sand well graded
<br /> fine to coarse,subangular to subrounded,sphericity low(sand
<br /> predominantly fine to medium),abundant fine black grains
<br /> RL-IA-90/9 60/54 10.15%,remaining predominantly quartz;silt low
<br /> plasticity/toughness,wet,moderately dense.laminations
<br /> - visible--dark banding(biotite?)fine grained.
<br /> c°1 55_0
<br /> 95 ML SILT,brown(10 YR 5/3),no plasticity;trace fine sand(15%j;hard,
<br /> moist,iron oxide stained throughout.
<br /> ® o
<br /> transition to SANDY SILT,yellowish brown(10 YR 6/5),slightly
<br /> 60/36 plastic,moist,hard,sand fine grained,blocky structure with black
<br /> stains along curvilinear fractures.
<br /> 60.0 CS 010819
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