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ALTON GEOSCIENCE, Inc. PROJECT No. 30-136 DATE DRILLED 9-26-94 BORING NO. <br /> LOG OF EXPLORATORY CLIENT_ T Mobil dl Corporation 8-3 <br /> BORING <br /> WLOCATION 500 1-Grantline Road.Tracy.CA WELL NO. <br /> LOGGED BY W.ShippT APPROVED BY AWS <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,T 4'diameter,Schedule 40, PVC,5'solid,20'pert. <br /> TOP OF CASING ELEVATION 32.62'above msf DRILLER West Hazmat Drillina <br /> .� WATER LEVEL 21.20'above msl <br /> Ui ' DATE 10-1.90 <br /> .. 1 TIME 1130 hrs <br /> U) a DESCRIPTION <br /> Locking is -Box <br /> 0 0 ~� <br /> 2 <br /> 4 :j. <br /> r; <br /> Blank Fill.,dense,damp,brown, sandy Gravel; silty. <br /> 6 Casing <br /> 0 8 <br /> 10 s <br /> t 10,5.7 :: — _ <br /> 12 ML Stili, saturated, brown. sandy Silt. <br />' 14 Sbted <br /> PVC <br /> 12,3,4 Casing .� <br /> 16 s SP Loose, saturated,gray, medium-grained Sand;trace rounded gravels to 2 . <br /> 18 t- <br /> 1: <br /> 20 <br /> 5.10.12 Very stili, saturated, light brown, silty Clay. <br /> - 22r <br /> CL <br /> 24 <br /> Very stiff, saturated, light brown Clay;silty and sandy. <br /> Y 7,20,1 26 <br /> End Cap Total boring depth .26.5 feet <br /> 28 <br /> = Stabilized Water Level Q Water encountered during drilling <br /> 30 <br /> Portland Cement E Sample submitted for laboratory analysis <br /> Q Sand#3 Lonestar Driven sample <br /> xl. Bentonite Pellets <br />