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BORING LOG <br /> Project No. Boring Diameter 9" Logged By <br /> KEI-P$9-1104 Casing Diameter N/A W W J66 /6 3 3 <br /> Protect Name Unocal SIS#5421 Well Cover Elevation Date Drilled <br /> 7303 Pacific Avenue, Stockton 11/9/92 <br /> Boring No Drilling Hollow-stern Drilling Company <br /> EB2 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 /> Silty clay,estimated at 15% silt and 5-10% sand,stiff,moist,very <br /> dark gray(7 5YR N2/) <br /> 5 Clay,estimated at 10-15% silt and sand, hard,moist, grayish <br /> 16/17/39 CL brown (10YR 5/2) <br /> 14/16/21 10 =_=— Silt,estimated at 10-15%clay and trace sand,hard, moist,light <br /> 'Mm _.—Zr. brownish gray (10YR 6/2) with slight strong brown (7 5YR 4/6) <br /> —— — mottling <br /> ML =—_— <br /> ZZZr <br /> Silty sand,estimated at 20% silt,dense, moist,light gray (10YR <br /> 12/15/24 15 SM 7/2)with strong brown (7 5YR 4/6) staining in root pores,sand is <br /> fine to very fined-grained <br /> 9/11/14 ____ Sandy silt,estimated at 15 to 20% very fine-grained sand,very <br /> 20 NQ. _ stiff,moist,grayish brown (2 5Y 5/2)with yellowish brown <br /> I=== (10YR 5/6)mottling <br /> Page L of 3 <br />