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n w Drilling Log <br /> J❑® GROUNDWATER Soil Boring SB-9 <br /> ❑� TECHNOLOGY <br /> See Site Map <br /> Chevron USA Products Comoanv For Boring Location <br /> Project Chevron - S. Center. Stockton Owner Prof.No. 0Z07E8 <br /> Location 139 South Center St.. Stockton CA s 3/4 in. COMMENTS: <br /> Total Hole Depth 50.5 ft. Diameter <br /> Surface Elev. Static 34 ft. <br /> Top of Casing Water Level Initial <br /> Length Type/Size <br /> Screen: Dia _--- Type <br /> Casing: Dia Length Rino/13/4"S lit-Spoon <br /> Fill Material Bentonite/Neat Cement Rig/Core <br /> Greoo Drillina Method Hollow-Stem Auaer <br /> Drill Co. 12/Or/95 Permit # 7°99— <br /> Rich Log ly Brian McAloon Date <br /> Driller RG4422 <br /> Checked By Ed Simonis License No. <br /> o Description <br /> =" o E 01 0 o no (Color, Texture, Structure) <br /> CL <br /> E z to-J <br /> u Trace < tOX, Little tOX to 20%. Some 20X to 35X. And 35X to 50 <br /> o m o N <br /> to m x c <br /> -2 <br /> 0 6" concrete over base course. <br /> Silty CLAY (40.60): brown. <br /> 2 0. <br /> CL <br /> 4 <br /> Sandy silty CLAY (20.30.50): brown, dry to damp, no hydrocarbon odor- <br /> SB-9 ,c <br /> 6 12.s -5s <br /> (grades silty CLAY (30,70)) <br /> 8 <br /> 10 SB-9 CL <br /> 0.2 -0-T <br /> 12 <br /> (grades sandy silty CLAY (20.30.50)) <br /> 14 <br /> SB-9 L/ <br /> 16 3.2 -155' <br /> T (30.701: grading to sandy silty CLAY (10.20.70): brown with <br /> SIL <br /> 18 j Clayey no h drocarbon odor. <br /> ML <br /> 1 10% white mottling, dry to damp. Y i <br /> 20 I sB-s <br /> 0.7 -20.5' ' <br /> L1 <br /> 22 J <br /> J <br /> 24 i I Page: I of 2 <br /> 01/04/19196 itNog-dec..93 <br />