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E DU PONT ENVIRONMENTAL REMEDIATION SERVICES <br /> VW--31 CLIENT CONOCO INC. <br /> BORING NUMBER _ PIERSON DRILLING <br /> PROJECT STOCKTON DRILLING COMPANY — — <br /> LOCATION 4325 EAST WASHINGTON STREET DRILLING METHOD S,.0•D. HOLLOW STEN!AUGER <br /> DATE DRILLED 10-2-31 and 10-3-31 SAMPLING METHOD CA SPLIT SPOON SAMPLER <br /> i LOGGED BYJ.A. LENRPlAN TOP OF CASING ELEV. 27 Feet MSL <br /> 0 <br /> T w �' i M of =x <br /> v r in !r 4 v OC-SCRI"TION Al REMARKS WELL DIA(l <br /> i� rn o ru o o <br /> ro cc ul <br /> tt AC Asphalt at surface (-2"). A <br /> ML <br /> t -ML <br /> 5 r - w <br /> 31-1 71 18;10 0 1 CLAYEY SILT -Reddish brown,hard,dry,some <br /> CA I caliche,no hydrocarbon odor. d <br /> V V <br /> � C <br /> � V Y <br /> io_ T �< < <br /> 12 31.2 76 18158 0 As above. IV J <br /> V <br /> _ < C <br /> 15 31-3 5015" S1/12 0 As above,moist. <br /> V 1 <br /> CA c f <br /> � V V <br /> {{ 4 C < <br /> F O J V <br /> a <br /> LU U C < p <br /> v � <br /> II 31-4 45/3" SS/SS 0 As above,dry. s < < <br /> F" ti <br /> 1 <br /> < G <br /> t 25 <br /> 31-5 68 18118 0 As above. < < <br /> CA <br /> V V <br /> C= 30 T <br /> y� 31-6 56 18/18 0 As above,moist. < < <br /> �( V <br /> G C <br /> < < <br /> 35- T <br /> E 31-7 40 18/15 0 CLAYEY SILT-Brown,hard,moist,trace caliche,no < < <br /> - hydrocarbon odor,--------------------------------------- <br /> v <br /> F} <br /> SM J V <br /> � C C <br /> 40 <br /> f 3 <br /> dOH NUMBCRT 400511-SA Page a <br /> B-15 <br />