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g-F <br /> __ - .,_. <br /> ALTON GEOSCIENuE, Inc. PROJECT NO. 30.136 DATE DRILLED-9-26-90 BORING NO. <br /> LOG OF EXPLORATORY8-3 <br /> BORING <br /> .. � CLIENT Mobil Oil Corporation_ ......_.. . <br /> LOCATION 500 E.Grantlina Road,Tracy,CA WELL NO. <br /> LOGGED BY W.Shipp APPROVED BY AW-3 <br /> FIELD SKETCH OF BORING LOCATION <br /> DRILLING METHOD C•M.E• 75 HOLE DIAM. 10.5" <br /> See Attached SAMPLER TYPE Modified California Split Spoon <br /> CASING DATA 4"diameter,Schedule 40,PVC,5'solid,20'perf. <br /> TOP OF CASING ELEVATION 32.62'above mal DRILLER West Hazmat Drilling <br /> ec o WATER LEVEL 21.20'above msl <br /> aLU `J u DATE 10-1-90 <br /> a o di - TIME 1130 hrs <br /> m DESCRIPTION <br /> Locking hrrt Box <br /> 0 0 <br /> 2 <br /> 4 Blank <br /> PVC Fill:dense,damp,brown,sandy Gravel;silty. <br /> 6 Casing <br /> a a <br /> 10 <br /> 10.5,7 <br /> 120.020 Stiff,saturated, brown, sandy Sift. <br /> ., <br /> f4 Slated <br /> PVC <br /> 12,3 4 16 Casing <br /> Sp Loose,saturated,gray,medium grained Sand;trace rounded gravels to 2'. <br /> i 18 <br /> 20 <br /> 5,10,1 Very stiff,saturated,light brown,silty Clay. <br /> 22 <br /> CL <br /> 24 <br /> 7,20,1 Very stiff,saturated, fight brown Clay;silty and sandy, <br /> End Cap <br /> Total baring depth-26.5 feet <br /> t. 28 <br /> 31E Stabilized Water level g Water encountered during drilling <br /> 30 r. — <br /> Portland Cement Sample submitted for laboratory analysis <br /> Sand#3 Lonestar Driven sample <br /> r��• Bentonite Pellets <br />