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� _•�- ,c-�r S� _ •• _ i'�--rte��i-^ � �g ������' �Y .rC <br /> 7' <br /> , <br />,.a2 " -id �'� _ T - rt •!� .��`h�E�.��` L' tYa,ra�a(� <br /> ALTON GEOSCIENCE, Inc. PROJECT NO. 30-136 DATE DRILLED 9-26-90 BORING NO. <br /> LOG OF EXPLORATORY CLIENT_ Mobil Oil Corporation _ B-4 <br /> -<r BARING LOCATION 500 E.Grantline Road,Tracy,CA WELL NO. <br /> LOGGED B:' W.Shipp APPROVED 13Y AW-4 <br /> FIELD SKETCH OF BORING LOCATION <br /> DRILLING METHOD C.M.E. 75,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' erf. <br /> TOP OF CASING ELEVATION 32.6T above msf DRILLER_ West Hazmat Drilling <br /> FF y o I WATER LEVEL 21.68'above msl <br /> i� <br /> a Q � DATE 10-1-90 <br /> o = v' "° TIME 1130 hrs <br /> m t' DESCRIPTION <br /> 0 Lacking <br /> Chris Box <br /> 0 <br /> 2 <br /> s Stiff,moist,light brown, sandy Sift. <br /> 4 <br /> Blank <br /> PVC i;6 <br /> 5,9.106 Casing <br /> z: MIL ;' Stiff,moist,light brown, sandy Sift. <br /> 0 g <br /> ;:.$'14,2 10 SZ3Z <br /> 12 0.020" 0 Very stiff,wet,light brown,sandy Silt. <br /> 14 Slotted <br /> PVC ;. <br /> 2,5,7 18 Casing Stiff,saturated,fight brown, silty Clay. <br /> 18 <br /> 20 Very stiff,saturated,light brown,silty Clay. <br /> 6'11,1 <br /> 22 CL <br /> 24 <br /> ' 3,14,2 26 Very stiff,saturated,light brown, silly Clay. . <br /> End Total boring depth a 26.5 feet <br /> .28 <br /> Stabilized Water Level Q Water encountered during drilling <br /> S4 <br /> Portland Cement Sample submitted for laboratory analysis <br /> E Sand#f3 Lonestar [O Driven sample <br /> fsf• Bentonite Pellets <br />