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s. . <br /> BORING NO. <br /> ALTON GEOSCIENCE, Inc. PROJECT NO. 30-136 DATE DRILLER_926-9O <br /> B-2 <br /> LOG OF EXPLORATORY CLIENT Mobil oil Co ration <br /> BORING LOCATION 500 E.Grantline Road,Tracy,CA WELL NO. <br /> LOGGED BY W.Shipp APPROVED BY AW-2 <br /> FIELD SKETCH OF BORING LOCATION <br /> DRILLING METHOD C.M.,. 75.10" HSA HOLE DIAM. 10.5" <br /> See Attached SAMPLER TYPE Modified California Split Spoon <br /> CASING DATA 4"diameter,Schedule 40,PVC,5'solid,20' ed. <br /> TOP OF CASING ELEVATION 33.16'above msf DRILLER West Hazmal Drilling <br /> Cr WATER LEVEL 21.79'above msl <br /> w DATE 10-1-90 <br /> to J w 0 TIME 1130 hrs <br /> EE <br /> m $ ' DESCRIPTION <br /> Locking Chris X1 I <br /> 0 <br /> 2 Medium stiff.damp,brown Silt;trace sand. <br /> 4 Blank <br /> , <br /> PVC <br /> 7,14, 6 Casing NL ; Very stiff, moist,brown,sandy Sill. <br /> 20 .0 8 i <br /> 10 Stiff,saturated,brown, sandy Silt. <br /> t 0,10, <br /> 10 12 0.020• <br /> S14 Slotted <br /> PVC <br /> Casing Firm,saturated,brown,sandy Sift. <br /> 4,3,6 16 <br /> 18 <br /> 20 Stiff,saturated,light brown,silty Clay;sandy. <br /> 5,6,11 <br /> s 22 CL <br /> 24 <br /> 3,4,6 26 Firm,saturated,light brown,silty Clay;trace sand. <br /> - - -End Cap - - Total boring depth"•26.5 feet <br /> 28 g Water encountered during drilling <br /> Stabilized Water Level <br /> _ <br /> 30 Portland Cement Sample submitted for laboratory artalysis - <br /> ©� Sand#3 Lonestar ® Driven sample <br /> r�r Bentonite Pellets <br />