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BORING LOG <br /> Project No. Boring Diameter 9" Logged By e '6�Z <br /> KEI-P89-1144 Casing Diameter N/A W W 'J66 116 3 3 <br /> Protect 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 /> EB3 Method Auger Woodward Drilling Co <br /> Penetration G W Depth Strati- <br /> blows/6" level (feet) graphy Description <br /> Samples USCS <br /> 0 <br /> Asphalt pavement over sand and gravel base <br /> Clay,estimated at 5-10% silt and 5% fine-grained sand,stiff <br /> moist,black(10YR 2/1) <br /> Silty clay,estimated at 25% silt, very stiff,moist, light brownish <br /> 10/12/19 5 gray(10YR 6/2)with trace yellowish brown (10YR 5/6) <br /> staining <br /> CL <br /> 11/15/23 10 Silty clay,estimated at 15% silt hard,moist,light brownish grav <br /> (10YR 6/2) with slight yellowish brown (10YR 6/4) mottling <br /> ---------------------- <br /> 15 _ = Clayey silt,estimated at 30% clay and 5% very fine-grained sand <br /> 5/6/'9 stiff,moist,light brownish gray (10YR 6/2),trace pores with <br /> yellowish brown (10YR 5/6) staining <br /> -- *�h—*- -------------------._._ --- <br /> Silty sand,estimated at 15-20% silt and trace clay,hard,moist <br /> 8/19/34 20 SM brown (10YR 5/3),sand is fine to very fine-grained slightly <br /> micaceous <br /> •i f'ff <br /> Page 1 of 3 <br />