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SECOR <br /> International Incorporated <br /> Logged By: Date Drilled: Drilling Contractor Project Name: Method/Equipment: Boring Number: <br /> WEST ARCO 5450 HOLLOW STEM AUGER <br /> DH 2121/02 HAZMAT STOCKTON,CA SPLITSPOON SB-3 <br /> See"Legend to Logs"for Boring Surface Groundwater Depth(ft.): Total Drive Drop <br /> sampling method Diam.(in.): Elev.(ft.): 12 FIRST Depth(ft.): wt.(lbs.): Dist.(in.): <br /> classifications and laboratory <br /> testing methods 8 20.5 140 30 <br /> Well <br /> Construction <br /> o Description z <br /> Asphalt and gravel. <br /> SILTY SAND(SM): dark yellowish brown(10YR4/6),fine-grained <br /> sand,loose,moist,poorly graded,no odor(0,70,30,0). <br /> 8 0 SB3 <br /> 5 @ 5, <br /> SANDY SILT with CLAY(ML):brown(10YR5/3),fine-grained <br /> sand,low plasticity,firm to hard,dry to moist,weakly cemented, <br /> patches of discoloration(black),no odor(0,25,55,20). <br /> I <br /> 18 0 SB3 <br /> 10 <br /> i <br /> GROUT <br /> No sample collected,hydropunch to 17 feet,groundwater sample SB3. <br /> 15 <br /> 11 SILTY CLAY(CL):olive brown(2.5YR4/3),moderate to high 0 SB3 <br /> 20 plasticity,firm,wet,no odor(0,0,35,65). @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 Iocation <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 /> 5450SB3.GPJ Approved by <br /> LOG OF BOREHOLE <br /> Figure (sheet 1 of 1) <br />