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Drilling Log <br /> ❑❑❑❑® GROUNDWATER Soil Boring SB-7 <br /> TECHNOLOGY <br /> • Project Chevron/Stockton Owner Chevron USA Products Co See Site Map <br /> 45 E Hgrdtn Way, Stockton CA 02070 4527 For 8orrng Location <br /> Location Pro) No <br /> Surface Elev. Total Hole Depth 495 ft Diameter 8 to COMMENTS <br /> Top of Casing Water Level Initial Static <br /> Screen Dia Length Type/Size <br /> Casing Dia Length Type <br /> Fill Material Neat Cement Rig/Core .CME-55/Sv1ft Spoon <br /> Drill Co SES, Inc _ Method Hollow Stem Auger/PID <br /> Driller Morris Peterson Log By Bruce Beate Date 5/10/94 Permit # 2921 <br /> Checked By Ed Stmonts License No RG#4422 <br /> CL ❑E a o' > z <br /> ° U a 1p Description <br /> a� CL a n 0. U <br /> o-- d a a 3c u W� In (Color, Texture, Structure) <br /> V) ED x ? Trace < 10%. Little 10% to 20%. Some 20% to 35X. And 35X to 50% <br /> 0 <br /> Dirt lot - dark brown silty sandy CLAY with some gravel <br /> 2 <br /> GC <br /> • 4 4 (grades lighter brown) <br /> SB-7 8 <br /> 0 -5' 12 Light brown silty CLAY (30,70) (dry to moist, no hydrocarbon odor) <br />� 6 <br /> CL <br /> 8 <br /> Mottled orange brown and olive gray silty CLAY (15,85) with black specks <br /> B (moist, no hydrocarbon odor) <br /> 10 SB-7 14 <br /> 0 -10 22 <br /> CL <br /> 12 <br /> 14 7 <br /> S13-7 12 Brown to orange brown silty CLAY (30,70) with white streaks and patches <br /> 0 -15 24 (moist no hydrocarbon odor) <br /> 16 CL <br /> 18 <br /> 4 <br /> 20 SB-7 9 (grades with abundant root casts <tmm) <br /> 0 -20 10 <br /> CL <br /> . 22 <br /> 247 JH <br /> Orange brown silty CLAY with hard streaks (moist, no hydrocarbon odor) <br /> 06/16/1994 hthlDg-mar93 Page 1 of 2 <br />