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s Wright Environmental Services, Inc., Tracy, CA Exploratory Boring Log <br /> Project No. 1117 Boring/Well No. B-3 <br /> Client: SJRR Comm. Date Drilled: October 9, 1997 <br /> Location: Weber Station, Stockton, CA Logger: CMP Well Installed: No <br /> Parcel 5 - Former Battery Storage Location Total Depth: 21.5' <br /> Drilling Method: 8` OD Hollowstem Cement Grout Seal: 21.5' to surface <br /> Permit: CSJ PHS-EMD # 013916; 013915 <br /> Water Levels: 1st Enc: None Static: -- <br /> Sample Blow a Depth Borehole <br /> No. Han Count (n (ft) Lithology Log Completion <br /> Gravel Surface and Fill, brick, metal and glass debris mixed with <br /> Silty Clay, low plasticity, damp. <br /> w <br /> B-3QQ <br /> 5 ML - Sandy SILT, light grayish brown 10YR6/2, clay<10%, <br /> 5, _ push f. sand 30%, laminated, damp, drills firm; soil pH = 6. <br /> 10 <br /> B-3 0 _ 24 Same as above, caliche and burrows, clay<5%, massive, very <br /> 10 stiff, damp; soil pH = 6.0. <br /> 15 Same as above, med. sand interbed 2-inch thick, damp. <br /> B-3 _ 36 <br /> 15' <br /> ML - Sandy SILT, gray 10YR511, v. f. sand 25%, massive, <br /> cob web caliche, rare burrows, hard, damp. <br /> 20 Same as above, caliche infilled cracks, massive, color change to <br /> B-3 _ 22 brown 10YR4/3, very stiff, damp. <br /> 20' <br /> Bottom of Boring = 21.5 feet <br /> Note: Han. refers to the Modified Hanby Field Analytical <br /> Laboratory test which yields a field colormetric qualitative <br /> mesasurement of presence of petroleum hydrocarbons in <br /> parts per million. <br /> pH - Field pH measurement paper readings in soil paste. <br /> Reviewed by RG/CEG <br />