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BORING LOG <br /> Protect No Boring Diameter 9" Logged By :: 'G <br /> KEI-P89-1104 Casing Diameter N/A WW <br /> Project Name Unocal S/S##5421 Well Cover Elevation Date Drilled <br /> 7303 Pacific Avenue,Stockton 11/9/92 <br /> Boring No Drilling Hollow-stem Drilling Company <br /> EB4 Method Auger Woodward Drilling Co <br /> Penetration G.W. Depth Strati- <br /> blows/6" level (feet) graphy Description <br /> Samples USCS <br /> 0Three'inches of asphalt over sand and gravelase <br /> Silty clay,estimated at 15% silt and 5-10%fine-grained sand, <br /> stiff,moist,brown (10YR 4/3) <br /> CL Silty clay,estimated at 15% silt,very stiff,moist,black(2 5Y N2/) <br /> trace rootlets <br /> Sâ–șity clay,estimated at 5-10% sand and 5% silt,hard,moist,dark <br /> 5 grayish brown(10YR 4/2) <br /> 7116/22 ---- <br /> ML = Clayey silt,estimated at 30% clay,hard,moist,brown(10YR 5/3) <br /> --------.---------------- <br /> Silty clay,estimated at 15-20% fine-grained silt very stiff,moist, <br /> 8/9/14 10 pale brown(10YR 6/3),trace root pores <br /> CL <br /> Silty clay,estimated at 25% elastic silt,very stiff,moist,grayish <br /> 6/8/14 15 brown (2 5Y 5/2) <br /> Silt,trace clay,slightly micaceous, hard,moist,grayish brown <br /> 11/18/22 20 - <br /> (2 5Y 5/2),slightly micaceous <br /> Page 1 of 3 <br />