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Drilling Log <br /> GROUNDWATER Monitoring Well MW-7 <br /> �LJU TECHNOLOGY <br /> Chevron USA Products Comoanv See Site Map <br /> Prosect Chevron - S. Center Stockton Owner A For Boring Location <br /> Location <br /> 139 South Center St.. Stockton.. CA Proi. No. 02070 0068 <br /> Surface Eley. Total Hole Depth 52 ft- Diameter -q In- COMMENTS: <br /> Top of Casing <br /> Water Level Initial Static 3-:.7 ft. <br /> Screen: Dia g <br /> 2 in. Length 20 ft. Type/Size SCh. 40 PvC/0.020 in.Casing: Dia 2 in- Length 32 ft. Type SCh. 40 PVC <br /> Fill Material <br /> 3 Sand Rig/Core Rino D-t4 Limited Access/Soot <br /> Drill Co. Greco Drilling Method Hvdraulicallv Driven <br /> Driller Butch Log By Brian McAloon Date 11/30 6 12/0l0yfmit * 8000 <br /> Checked By <br /> Ed Simonis License No. RGA4422 <br /> Description <br /> —y 0E a o o a� U <br /> 3 a 0-0. a U v ,�� (Color, Texture, Structure) <br /> u <br /> O`er V V N m x ? Trace < i0%, Little i0% to 20%. <br /> Some 20X to 35X, And 35X to <br /> 0 S' concrete (sidewalk) over base course. <br /> •-�•:• Silty CLAY (20.80): dark brown, dry to dump, no hydrocarbon <br /> 6.: <br /> 2 < < Odor. <br /> < < <br /> 4 ` <br /> CL <br /> Mw-7 <br /> 6 0 -6.0' <br /> 8 < < <br /> ` ` Py Y silt fine SAND (20.80): brown, grading to silty CLAY <br /> '• Clay_ <br /> f ~ < < SC (20,80): cark brown, dry to damp, no hydrocarbon odor. <br /> 10 <br /> ' < < Mw-7 ' <br /> j 0 -tt07 <br /> } 12 ` CL <br /> < < <br /> ± Clayey SILT (45.55): brown, dry to damp. no hydrocarbon odor. <br /> < < I <br /> 14 <br /> Mw-7 I <br /> 16 I < < i 0.5 -*.0• <br /> 1 < < ; <br /> 18 i Silty CLAY (40.60): light brown with dark brown mottling, dry to <br /> ` i <br /> damp, no hydrocarbon odor. i <br /> < < I 1 <br /> 20 < <br /> I } <br /> Mw-T } <br /> < < j 0.5 -aA l CL } <br /> 22 < <br /> i 1 <br /> 24 II <br /> ' Page: I of 2 <br /> 01/26/1996 fithlog-aec..93 <br />