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SECOR <br /> international lnco orated <br /> Logged By: Date Drilled: Drilling Contractor Project/dame: Method/Equipment: Boring Number: <br /> WEST ARCO 5450 HOLLOW STEM AUGER <br /> DH 2/21/02 HAZMAT STOCKTON,CA SPLITSPOON SB-1 <br /> See"Legend to Logs"for Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> sampling method, Diam.(in.): Elev.(ft.): Q 13 FIRST Depth(ft.): wt.(Ibs.): Dist.(m.): <br /> classifications and laboratory S 20.5 140 30 <br /> testingmethods <br /> � I <br /> v o <br /> Well 3 Description z <br /> Construction <br /> A <br /> Asphalt and gravel. <br /> SILTY SAND(SM):brown(10YR5/3),minor clay,fine-grained <br /> sand,low plasticity,loose,moist,no odor(0,55,30,15). <br /> 7 CLAYEY SILT with SAND(ML): brown(10YR5/3),fine-grained 0 SBI <br /> 5 sand,low to moderate plasticity,soft,slightly moist,mottled with olive 95' <br /> streaks,no odor(0,15,50,35). <br /> 13 SILTY CLAY(ML): strong brown(7.5YR3/6),moderate plasticity, 0 SB 1 <br /> 10 firm,dry to slightly moist,moderately cemented,no odor(0,5,35,60). @ 10' <br /> GROUT <br /> 11 SILTY CLAY(CL): dark yellowish brown(10YR4/6),moderate 0 SBI <br /> 15 plasticity,firm,very moist to wet,moderately cemented,no odor @ 15' <br /> (0,5,35,60). <br /> 22 SILTY CLAY(CL):olive brown(2.5YR4/3),moderate plasticity, 0 SBI <br /> 20 hard we weakly cemented no odor(0,0,40,60). @20' <br /> The substrata descriptions above are generalized representations and based upon visual/manual classification of cuttings and/or <br /> samples obtained during drilling. Predominant material types shown on the log may contain different materials and the change from <br /> one predominant material type to another could be different than indicated. Descriptions on this log apply only at the specific location <br /> at the time of drilling and may not be representative of subsurface conditions at other locations or times. <br /> . Project No. 77BP.43323.00.0203 Date 3/12/02 PR Log of Boring <br /> 5450SB 1.GPJ Approved by <br /> LAG OF BOREHOLE Figure (sheet 1 of 1) <br /> I <br />