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Wright Environmental Services, Tracy, CA Exploratory Boring Log <br /> Project No 4509-T Bonng/Well No B-3 Well Installed No <br /> Client City of Tracy Date Drilled Feb 5, 2003 Total Depth <br /> Location Delta Disposal 99 6th Street, Tracy Logger CMP Cement Grout Seal 32' to Surface <br /> Drilling Method 3" OD GeoProbe <br /> Permit PHS EHD#32661 <br /> Water Levels 1st Enc 16 ' @ 11 30 Static NM <br /> Sample Push 1 Depth Borehole <br /> No PID (ft) Lithology Log Completion <br /> Concrete ,"A^ <br /> CL- Sandy CLAY, brown 10YR5/3, low plasticity, f sand 20%, <br /> massive, stiff, damp "^"^ <br /> A"A <br /> A A" <br /> AA <br /> W1 0 5 Same as above, stiff, damp "A"A <br /> ^ <br /> Ah <br /> AAA <br /> A" <br /> A"h <br /> l 0 10 Same as above, f sand 25%, stiff, damp ""^^ <br /> AAA <br /> A ^^ <br /> h" <br /> QW "^^" <br /> wzs 165 15 SW- SAND, stained gray, fines <5%, f crs sand 95%, massive, ^ ^ <br /> very dense, saturated ^^^" <br /> "A^A <br /> A^A <br /> W1 74 20 SC-Clayey SAND, dark yellowish brown 10YR4/4, low plasticity, ^^^" <br /> f sand 55%, massive, med dense, moist, no odor or stain <br /> ^"A <br /> A^ <br /> B-3.5 201- 25 CL- Sandy CLAY, dark yellowish brown 10YR5/6, low plasticity, A^A" <br /> massive, stiff, damp A"^" <br /> rM F <br /> A" <br /> A^AA <br /> 30 <br /> � <br /> 3 CL- Silty CLAY, yellowish brown 10YR5/6, low plasticity, f sand X10%, " "^ <br /> massive, stiff, damp <br /> A^ <br /> I <br /> Bottom of Boring = 32 feet <br /> Reviewed by RG/CEG <br /> 1 <br />