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Wright Environmental Services, Inc., Tracy, CA Exploratory Boring Log <br /> Project No 4529 Bonng/Well No B-5 Well Installed No <br /> Client City of Tracy Date Dnlled Feb 10, 2003 Total Depth 21 ' <br /> Location 560 Tracy Blvd , Tracy, CA Logger CMP Cement Grout Seal 21 ' to surface <br /> Drilling Method 3" OD GeoProbe <br /> Permit PHS EHD 32664 <br /> Water Levels 1st Enc 13'±Static NM <br /> Sample Blow a Depth <br /> No OV Count � � Lithafogy Lag Borehole <br /> Completion <br /> Concrete pavement A " <br /> A A <br /> h A <br /> ML-Clayey SILT, dark yellowish brown 10YR3/4, low plasticity, <br /> f sand 355, faint bedding, firm, damp <br /> A" <br /> 0 pus 5 Same as above, firm, damp <br /> A" <br /> 154-2 0 A"A" <br /> all' pust 10 CL-Silty CLAY, very dark grayish brown 10YR3/2, possible stain, <br /> low plasticity, f sand <5%, massive, firm, damp, becomes very moist <br /> at 11 feet " <br /> "A <br /> AAA <br /> A" <br /> A"h <br /> 016' 30 Pus 15 CL-SC- Sandy CLAY to Clayey SAND, stained gray, low plasticity, <br /> sandy lenses interbedded in clayey strata, stiff overall, sandy lenses " <br /> saturated, clayey strata damp <br /> hh <br /> A"A <br /> Same as above, stain fades at 19-19 5 feet to yellowish brown 10YR5/6 <br /> 54 <br /> 1B-Q.21 <br /> 4, pus 20 A <br /> CL- Silty CLAY, yellowish brown 10YR5/6, low plasticity, no sand, <br /> massive, firm, damp to moist <br /> Bottom of Boring = 21 feet, <br /> sheen on water, appears as <br /> emulsified oil(?) <br /> • <br /> Reviewed by RG/CEG <br />