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CAMP DRESSER&McKEE Sheet 4 of 5
<br /> CDM BOREHOLE LOG
<br /> ARL-1A
<br /> Client: City of Stockton Project Name: Stockton,CA --
<br /> Project Location: Austin Road Landfill Project Number. 2500-22118
<br /> c
<br /> mo��, Eos ® m Eo
<br /> a® Sample 0, s Y' 2 E N a�' a c Material
<br /> E a o o,
<br /> Number �' (h) m r I15 Description
<br /> Description
<br /> tr 2 to C7 rn
<br /> -60.0 u-
<br /> 100 ML Same as above.
<br /> SM Grades to SILTY SAND,yellowish brown(10 YR 6/5),fine grained;
<br /> silt nonplastic,verymoist.
<br /> 60/36 SP Grades POORLY GRADED SAND,dark yellowish brown(10 YR --
<br /> 4/6);fine grained near horizon iron oxide and caliche?lenses,
<br /> very hard,moist.
<br /> -65.0
<br /> 105 ;•; SW WELL GRADED SAND,brown(10 YR 5/3),fine to coarse grained,
<br /> subangular to subrounded,low to moderate sphericity,60%
<br /> quartz,15%dark grains,26%mica;gravel lenses at 1.5 ft.
<br /> A L-1A-105/1 o spacing,1-2'thick,max size 1.25',quartz and chert,volcanks?,
<br /> 60!36 metamorphic composition,fiat and elongate gravel;wet;dense; _..
<br /> thin laminations apparent due to biotite(?).
<br /> 70.0 _
<br /> 110 SW Fleaving sands,driller adds-30-50 gallons of water,approx 9T of
<br /> sand in auger. Driller rotes gravel layer at 110',gravel ends
<br /> • •. GW X113.5'',113.5'"feels like clamsdrillerZ —
<br /> 60/30 ® ® WELL GRADED GRAVEL,fine to coarse grained 0.25'-2',prod
<br /> 0.5',rounded to angular(broken In sampler);medium to coarse
<br /> sand<10-15%,subrounded;dense,saturated,gravels are chart,
<br /> ': SM -metamAMhic•volcanic® siti®n.®
<br /> SILTY SAND,dark brown(10 YR 4/3),fine grained,slightly plastic
<br /> -115 fines,dense,moist,no dilltancy,slightly sticky.
<br /> 60/3
<br /> 12 0 SM As above,sample in tip and smear on inside core barrel. '
<br /> 120
<br /> 60/60
<br /> SM SILTY SAND yellowish brown(10 YR 5/6),sand fine to medium
<br /> grained,subrounded,low to moderate sphericity;silt slightly _
<br /> 125 W!S plastic,no toughness/dilitancy,dense,wet,strong Iron oxide
<br /> staining,4'thick. /
<br /> between 124 and 124_5',hardLmoiststrongty cemented
<br /> Interbodded WELL GRADEO/POORLY GRADED SAND,dark
<br /> 60/30 grayish brown(10 YR 4/2),fine to medium grained,predominantly
<br /> fine grained. dense,wet;near horizontal bedding/laminations
<br /> visible due to high biotite In fine grained layers,alternate layers
<br /> thickness varies from 1-3'thick
<br /> •90.0
<br /> 130
<br /> 6013
<br /> 6
<br /> ::SM/Ml. SILTY SAND/SANDY SILT,dark yellowish brown(10 YR 6/4),silt
<br /> low plasticity;sand fine grained;moist,hard;
<br /> 133.5'to 134.5'.moderately cemented,blocky structure,rootlet
<br /> c voids visible 1-2 mm diameter along blocky surface,1/4-1/2'fine
<br /> c?
<br /> -2§0 sand strip ers.
<br /> 0 135 :: SM SILTY SAND,dark brown(7S YR 4/3),fine grained,dense to very
<br /> dense,moist;silt plasticity none to slight.
<br /> 137'-138';fracture surfaces coated with black staining
<br /> ® 60/42 (manganese oxide?),carbon fragments<=5 mm diameter present
<br /> a beginning 138',homogeneous,no visible laminations/bedding. t
<br /> ® -100.0 CS 010820
<br /> Ciry orSt+.kt.� IgnitimX V.
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