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ES ENGINEERING-SCIENCE <br /> CLIENT EXXON COWANY.USA _ TEST HOLE NUMBER n w_1 <br /> 3128 WEST BENJAMN HOLT <br /> LOCATION DRIVE,STOCKTON,CA DRILLER NEW DRILLING CO. <br /> { <br /> DATE 20 March 1991 DRILLING METHOD HOLLOW-STEM AUGER <br /> GEOLOGIST CARL P.ALLEN HOLE DIAMETER 10-INCISES <br /> F WELL CONSTRUCTION LITHOLOGY DESCRIPTION <br /> LOCKING CAP 0 FHALT <br /> CURISTY BOX <br /> o. L <br /> K$ROWN CLAYEY SAND (SC),slightly <br /> GROUT: ,masse gravel(10%),no odor <br /> 95%CEMENT <br /> 5%BENTONITE 4 K CLAY(CH),plastic,moixt,no odor <br /> (0.76-6 feet) <br /> (4/6/7) BROWN SANDY CLAY(CL),slightly plastic, <br /> slightly moist,ma odor <br /> BENTONITE SEAL Collactad a repraeentative sample at B feet <br /> PID=0 ppm at 8.6 tent <br /> (6-8 feet) <br /> B <br /> DARK BROWN CLAY(CH),moderately plastic, <br /> #3 MONTEREY moderately molat,some sand and gravel(6%),no <br /> SAND PACK odor <br /> ; E (8-25 feet) <br /> Collected a repronntative samplo at 11 test <br /> ff 12 PID m 0.8 ppm at 11.6 foot <br /> P` 4"ID BLANK aa <br /> PVC CASING D <br /> BROWN CLAY(CI{),moderatoly plastic,eGghtly <br /> y 0.25-10.05 feat) moist,no Band or gravel,no odor <br /> (4/10/13) <br /> 18 Collected a rapreaentative sempie at 16 feet <br /> 4"ID SLOTTED PID=0 ppm at 18.6 feat <br /> a PVC CASING <br /> SLOT SIZE=*0.010" <br /> �( (10.05-24.6 feet) <br /> GRZY TO BLUISH-GRZY�CLAY(CH),high <br /> plasticity,moist,no odor,e$tockton Blue Clay' <br /> PVC CAP <br /> "> BOTTOM OF BOREHOLE <br /> TM.Appemdmately 26 Feet <br /> kem 18 <br /> AMIN EXPLANATION <br /> 4 $ Water level during drilling •--- Contact(dashed wbere appr='mate) <br /> d PID Photoionisation Detector Reading Location of sample <br />