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BORING LOG <br /> Project No Boring Diameter 9" Logged By la <br /> KEI-P89-1104 Casing Diameter N/A WW GAG lG3 3 <br /> Project Name Unocal S/S#5421 Well Cover Elevation Date Drilled <br /> 7303 Pacific Avenue, Stockton 11/10/92 <br /> Boring No EB7 Drilling Hollow-stem Drilling Company <br /> (Directionally drilled to the west,at an angle Method Auger Woodward Drilling Co <br /> of 10 degrees to the vertical) <br /> Penetration G W. Depth Strati- <br /> blows/6" level (feet) graphy Description <br /> Samples USCS <br /> 0 <br /> Silty gravel,gravel to 1-1/2 inches in diameter,dense,moist, <br /> yellowish brown(10YR 5/4),(fill) <br /> 9/13/18 5 Clay,estimated at 5% silt and 5% sand very stiff,moist, very <br /> dark gray (10YR 3/1),trace rootlets and caliche <br /> CL <br /> 3/4/6 10 Silty clay,estimated at 35% silt and trace sand,stiff moist light <br /> brownish gray (10YR 612),trace pores y <br /> 12/18/21 15 —__ Silt,estimated at 10%clay,hard,moist light brownish gray <br /> (IOYR 6/2)with yellowish brown (10YR 5/6) mottling slightly <br /> micaceous <br /> — <br /> Silt,estimated at 10%clay and 5-10% very fine-grained sand <br /> 8/18/14 20 —_- very stiff,moist to very moist, Iight brownish gray(2 5Y 6/2) <br /> trace pores with yellowish brown (10YR 517)staining <br /> micaceous <br /> Page 1 of 2 <br />