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BORING NO. <br /> ALTON GEOSCIENCE, Inch PROJECT NO. 30-136 DRILLED 9-26-90 <br /> LOG OF-EXPLORATORY Mobil 01 Corporation <br /> B-4 <br /> CLIENT <br /> BORING LOCATION 500 E.Grantline Road,Tracy ,CA WELL <br /> ■: <br /> LOGGED BY W.Shipp APPROVED BY AW 4 <br /> FIELD SKETCH OF BORING LOCATION <br /> DRILLING METHOD C.M.E. 75, HSA HOLE DWM. 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 32.67'above msl DRILLER West Hazmat Drillieg <br /> WATER LEVEL 21.68'above msl <br /> _ w Z DATE 10-1-90 <br /> a. 5-' a a TIME 1130 hrs <br /> v v g DESCRIPTION <br /> Locking is Box <br /> 0 0 <br /> 2 <br /> '•'• Stiff, moist light brawn, sandy Silt <br /> Blank <br /> PVC :t <br /> 5,9,10 6 Casing M, ; ;; Stiff, moist, light brown, sandy Slit <br /> 0 •'•: <br /> 8 <br /> t 10 <br /> ,14,2 _ <br /> _ <br /> 12 ,.;. Very stiff,wet, light brown,sandy Silt <br /> 0.020' ' <br /> 14 Slotted •.; <br /> PVC is <br /> 2.5,7 16 Casing Stiff, saturated, right brown, silty Clay. <br /> 18 <br /> 20 Very stiff, saturated, light brown,silty Clay. <br /> 6,11.1 Y• <br /> 22 CL <br /> z4 <br /> Very stiff, saturated, light brown, silty Clay. <br /> 3,14, 26 <br /> End Cap Total boring depth.26.5 feet <br /> _ Stabilized Water Level Q Water encountered during drilling <br /> _ _ <br /> 30 ® Portland Cement Sample submitted for laboratory analysis <br /> Sand#3 Lonestar m Driven sample <br /> i Bentonite Pellets <br />