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ALTON GEOSCIENCE, Inc. PROJECT NO, 30•140 DATE DRILLED 8.9.90 BORINGNO <br /> LOG OF EXPLORATORY CLIENT Mobil Oil Corporation B'2 <br /> BORING <br /> LOCATION TrM Blvd,and GranMno Road Tracy,CA WELL NO. <br /> FIELD SKETCH OF BORING LOCATION LOGGED BY Wp_.ShipAPPROVED BY AMW-4 <br /> GrIwjIiat Road <br /> t DRILLING METHOD C.M.E. 7K HOLE DIAM. 8.5' <br /> 1 1 SAMPLER TYPE Split Spoon <br /> CASING DATA Schd.40,PVC,2.5'solid 12.5'pert <br /> TOP OdCASING ELEVATION DRILLER West Hazmat <br /> x <br /> WATER LEVEL 4.75' <br /> a DATE B-10.90 <br /> rd ¢o TIME 0930 <br /> o DESCRIPTION <br /> 0 Chrisx <br /> 0 2'sch. <br /> 2 40 PVC Sandy Silt:tan,slightly moist,very low plasticity <br /> Casing $: <br /> 0 4 SM <br /> fi Sandy Silt:brown,moist,firm,low plastich <br /> gravels Y.20%fin <br /> nA sands,5°10 rounded <br /> 8 <br /> 10 <br /> lf. <br /> 8 ' CH Sz Clay:medium brown,moist.stiff,highly oiastic,10%f <br /> 12 !no micas <br /> ;' <br /> 142 CL Sandy Clay:tan,wet,stiff,highly plastk,20%Iine sands <br /> sch.40 <br /> 16 PVC <br /> .820 Total depth n 15 feat <br /> 18 <br /> Slot <br /> 20 <br /> 22 <br /> :.. 24 <br /> 26 ]!€ <br /> Stablized water level !LZ Water encountered during drilling <br /> 28 Portland Cement <br /> Sample submitted for laboratory analysis <br /> 30 <br /> Sand#3 Lonestar Driven sample <br /> Bentonite_ <br />