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� V <br /> BORING NO. <br /> AL-TON GEOSCIENCE, Inc. PROJECT NO. 30-136 DATE DRILLED 9-26-90 B-4 <br /> LOG OFEXPLORATORY CLIENT Mobil oil Corporation <br /> BORING LOCATION 500 E.Grantline Road,Tracy ,CA WELL <br /> NO. <br /> LOGGED BY W.Shipp APPROVED BY AW-4 <br /> FIELD SKETCH OF BORING LOCATION <br /> DRILLING METHOD C.M.E. 75, HSA HOLE D[AM. 10.5' <br /> See Attached SAMPLER TYPE Modified California Split Spoon <br /> CASING DATA 4'diameter, Schedule 40, PVC,5'solld, 20' ed. <br /> TOP OF CASING ELEVATION 32.6T above msl DRILLER West Hazmat Drilling <br /> z WATER LEVEL 21.68'above msl <br /> v aDATE 10-1-90 <br /> c v -- C0 TIME 1130 hrs <br /> m Q En Q DESCRIPTION <br /> Locking Christ Box <br /> 0 0 ~ <br /> 2 <br /> Stiff, moist, light brawn, sandy Silt <br /> 4 Blank <br /> PVC <br /> 5,9,10 fi Casing Stiff, moist, light brown, sandy Silt <br /> 0 8 �? <br /> 10 <br /> 5,14,2 Q= <br /> 12 Very stiff,wet, light brown, sandy Silt. <br /> 0.020' ' <br /> Slotted <br /> 14 PVC <br /> Casing Stiff, saturated, light brown, silty Clay. <br /> 2,5,7 1$ <br /> 18 <br /> 20 Very stiff, saturated, light brown, silty Clay. <br /> 6,11,1 <br /> 22 CL <br /> 24 <br /> Very stiff, saturated, light brown, sifty Clay. <br /> 3,14,2 26 End Cq) Total boring depth-26.5 feet <br /> 28 a Stabilized Water Level Q Water encountered during drilling <br /> _ <br /> 30 EmPortland Cement ® Sample submitted for laboratory analysis <br /> Sand#3 Lonestar ❑] Driven sample <br /> ftir Bentonite Pellets <br />