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Drilling Log <br /> R❑® GROUNDWATER Soil Boring SB-1 <br /> OC111 TECHNOLOGY <br /> min Holt Stockton Chevron USA Products Com an See Site map • <br /> Prosect Chevron-W Ben a owner For Boring Location <br /> Location 2905 W Ben amfn Holt Dr Stockton CA Prol No 02070 OOf7 <br /> Surface Elev Total Hole Depth 215 ft Diameter 8 in COMMENTS <br /> Top of Casing — Water Level Initial Static <br /> Screen. Dia Length Type/Size --12 along planter curb facing-3 of <br /> curb <br /> Casing Dia Length Type <br /> Fill Material Neat Cement Rig/Core CME-75/Spl,t Spoon <br /> Drill Co SES, Inc Method Hollow Stem Au er/PID <br /> Driller Mike Duffy- Log By Jason Fedota Date 06120194 Permit <br /> Checked Sy Ed Simonis License No RD#4.422 <br /> to Description <br /> DE m 'o o CC3 U <br /> aq <br /> CD— <br /> CD 0.a E I � M-J rn (Calor, Texture, Structure) <br /> C] '� cc Trace < 10%, Little 10% to 20%. Some 20% to 35%, And 35% to SOX <br /> in m x <br /> n -=2 - - - -- v - -- - _ - - ----- zr -- - _ -- - — _w -- — -- - - -- - _ <br /> ii- - TO - - - - - - - - - - - - - ravell SAND- - -- - - <br /> Asphalt overdark_brown_to,bla - _clayey g y <br /> (grades to brown sandy clay, soft, moist, no hydrocarbon odor) <br /> 2 <br /> CL <br /> 4 (grades dark brown gravely CLAY) <br /> 2 SG-1 3 <br /> 6 -5 4 Gray silty fine SAND (damp no hydrocarbon odor) <br /> 5M <br /> B Light gray medium SAND (speckled black rounded, moderately to well <br /> -90% quartz) <br /> 10 40 SB-i 5 <br /> -10 8 <br /> 11 SP <br /> 12 <br /> 14 (grades to silty sand) <br /> 5M <br /> 200 58-1 2 <br /> 1B -i5 6 Orange brown/gray mottled silty <br /> CLAY (40,80) (moist, strong hydrocarbon <br /> odor <br /> some root casts and trace sand grans) <br /> 1B cL <br /> Orange brawn/gray mottled sandy silty CLAY (20 30 50) (very moist root <br /> 20 2 S8-1 3 casts slight hydrocarbon odor) <br /> -20 4 <br /> 5 <br /> 22 End of boring Backfilled with neat cement <br /> 24 <br /> 07/21J1994 ht:Nog-mar93 Page 1 Of <br />