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Drilling Log <br /> �® GROUNDWATER Soil Boring SB-6 <br /> �0❑ TECHNOLOGY <br /> Project Chevron - S. Center. Stockrc.'� See Site Map <br /> Owner Chevron USA Products Comoanv For Boring Location <br /> Location 139 South Center St.. Stockton. CA Proi. No. 02070 0068 <br /> Surface Elev. Total Hole Depth 36 tt. Diameter 5.314 in. 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 Rino/1 3/4"Split-SOoon <br /> Drill Co. Greco Drilling Method Hollow-Stem Aucer <br /> Driller Rich Log By Brian McAloon Date 11/30/95 Permit # 7999 <br /> Checked By Ed Simonis License No. PGR4422 <br /> i 2 Description <br /> E m 'o 'o t 01 CJ <br /> V_ a s E ; I m� w (Color, Texture, Structure) <br /> @ o °C N Trace < 10%, Little 10% to 20%, Some 20% to 35%, And 35% to 50% <br /> to m x c <br /> I <br /> -2 <br /> 0 4" concrete. <br /> Debris and backfill of wood, red brick, concrete, in a clayey sandy SILT <br /> 2 (10,35,55) matrix. <br /> GM <br /> 4 <br /> 6 Clayey SILT (40,60): brown, dry, no hydrocarbon odor. <br /> S <br /> L/C <br /> 10 — <br /> S8-6 <br /> 1.5 -uo, <br /> 12 <br /> Grading to sandy clayey SILT (10.30,60): light brown, dry, no hydrocarbon <br /> 14 odor. <br /> 58-6 Luc <br /> 16 34.9 -16.0' <br /> lo <br /> 18 Sandy silty CLAY (10.20,70): brown, dry, no hydrocarbon odor. <br /> I <br /> 20 <br /> 58-6 <br /> 4.9 -21.0• CL <br /> 22 - <br /> 24 — <br /> Page: i of 2 <br /> 01/04/1998 6thiog—aec..93 . <br />