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BORING LOG <br /> Project No Boring Diameter 9" Logged By CSG <br /> KEI-P89-1104 Casing Diameter N/A W W 166 3 3 <br /> . Project Name Unocal S/S 1#5421 Well Cover EIevation Date Drilled <br /> 7303 Pacific Avenue Stockton 11/9/92 <br /> Boring No Drilling Hollow-stem Drilling Company <br /> EB2 Method Auger Woodward Dnlling Co <br /> Penetration G W Depth Stra€i- <br /> blows/6" level (feet) graphy Description <br /> Samples USCS <br /> _= Silt,estimated at 5-10% very fine-grained sand very stiff moist <br /> 8/8/925 MI" ___= dark grayish brown(2 5Y 4/2) micaceous silt is slightly elastic <br /> 7/9/10 <br /> . 30 I Sand fine-grained, trace silt <br /> below 30 5 feet, dense grading to an estimated 10% silt <br /> 15/19/21 moist, dark greenish gray (5GY 4/1) <br /> SP <br /> ------------_...--------- <br /> 's°'e <br /> 20/50-5 35 eSandy gravel estimated at 35% sand, trace silt gravel is well <br /> GW graded, subrounded to 1-3/4 inches in diameter very dense <br /> p O O 6 <br /> moist, brown (10YR 5/3),slightly micaceous <br /> 'PP'a's°'► <br /> •y+.�.e OP <br /> 12/I5/17 40 Silty clay,estimated at 15-20% slightly elastic silt very stiff to <br /> CL hard moist,grayish brown (10YR 5P2), trace pores, trace caliche <br /> — _mm_ Clayey silt estimated at 35% silt and 5% fine graincd ,and hard <br /> ML <br /> moist light yellowish brown (2 5Y 6/3) trace Dore,, trace caliche <br /> Page 2 of <br />