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BORING LOG <br /> Prosect No. Boring Diameter 9" Logged By <br /> KEI-P89-1104 Casing Diameter NIA W W <br /> Project Name Unocal S/S#5421 Well Cover Elevation Date Dnlled <br /> 7303 Pacific Avenue,Stockton 11/9/92 <br /> Boring No Drilling Hollow-stein Drilling Company <br /> EBI Method Auger Woodward Drilling Co <br /> Penetration G.W Depth Strati- <br /> blows/6" Description <br /> level (feet) graphy p <br /> Samples USCS <br /> Silty sand,estimated at 30-40% silt and 5%clay,dense,moist, <br /> 12/16/33 45 ;;` light yellowish brown(2 5Y 6/3),sand is fine to very <br /> SM <br /> a`i`s s• fine-grained,trace pores and caliche <br /> h <br /> 9/11/11 = <br /> 50 ___ Silt,estimated at 10% clay and 5%fine-grained sand, very stiff, <br /> =--- <br /> ML ———= moist,light yellowish brown(10YR 6/4), trace caliche <br /> 15/36/44 55 Clayey sand,estimated at 15%clay and 5%Q silt, very dense, <br /> SC moist,light yellowish brown(10YR 6/4),sand is fine to very <br /> fine-grained and an estimated 5%coarse-grained <br /> 10/I6/50 +' <br /> SM s` Silty sand,estimated at 25-30% silt,very dense,very moist to <br /> = :; .; <br /> saturated,light yellowish brown (2 5Y 6/3),slightly micaceous, <br /> sand is fine-grained with trace coarse-grained <br /> 60 TOTAL DEPTH 58 5' <br /> . 65 <br /> Page 3 of 3 <br />