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BORING LOG <br /> Protect No Boring Diameter 9" Logged By �G G <br /> KEI-P89-1104 Casing Diameter NIA WW <br /> Project Name Unocal SIS#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- Description <br /> blows/6" level (feet) graphy <br /> Samples USCS <br /> 5/6/11 ML =__= Silt,very stiff,very moist,dark gray (5Y 4/1),silt is slightly <br /> 25 –––- elastic,traces of rootlets and organic matter micaceous <br /> -------------`- -------- <br /> SM ; <br /> Silty sand, fine to very fine-grained,estimated at 15% silt dense <br /> 11/13/24 30 moist, grayish brown (10YR 5/2) <br /> raa.aar�.p <br /> .ao�a rq race <br /> 4' Sand and gravel,well graded, subrounded gravel to 1-1/2 mchea <br /> a O,a+a <br /> GW O a O a <br /> racer:•:¢ in diameter,medium dense,moist,pale brown (10YR 612) <br /> race ra4 r4 ti <br /> ra*.aaraa O <br /> r4 raaraa 4a <br /> 9111/12 35 <br /> 'a°race's'a° <br /> Silt,estimated at 5-10%clay,very stiff,very moist yellowish <br /> –= brown (10YR 5/4),slightly micaceous <br /> ML <br /> 13/29/35 40 Sand,fine-grained trace silt trace medium-grained sand ver, I <br /> SP dense,moist,grayish brown (10YR 5/2) <br /> —— –––– Clayey silt,estimated at 15% clay, hard moist brox n (104 R ;i, <br /> NII.. – slightly micaceous <br /> Page 2 of 3 <br />