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Wright Environmental Servic ..', Tracy, CA ",rploratory Boring Log <br /> Project No. 4889 Boring/Well No. B-3 Well Installed: No <br /> Client: City of Tracy Date Drilled: Feb. 14, 2003 Total Depth: <br /> Location: Waste Water Plant 3900 Holly, Tracy Logger: CMP Cement Grout Seal: 21 ' to Surface <br /> Drilling Method: 3" OD GeoProbe <br /> Permit: PHS EHD#32663 <br /> Water Levels: 1 st Enc: 14' Static: 8.7' @ 12:30 <br /> Sample Push °� Depth Borehole <br /> No. PID ({tj Lithology Log Completion <br /> Gravel Pavement <br /> 0 <br /> Y <br /> CL-CH- Silty CLAY, dark grayish brown 10YR4/2, mod.-high <br /> plasticity, massive, stiff, damp. <br /> rraa <br /> c <br /> 1O 5 <br /> 0' 0 L Same as above, iron oxide mottles, stiff, damp. <br /> 1, 0 10 ML-Sandy SILT with clay, brown 10YR5/3, slightly plastic, silt 60%, <br /> sand 30%, clay 10%, massive, locally very sandy, firm, damp-moist. <br /> [tae 0 15 SC-SP- Clayey SAND to SAND, dark gray 10YR4/1, slighlty plastic, <br /> clay 10-30%, f. sand 70-90%, clayey lenses at 15 feet, med. dense, <br /> saturated. <br /> Pushes hard 17-19.5. <br /> &z-0 0 20 Same as above, f. sand 90%, saturated, then sharp contact. <br /> CL-Silty CLAY, yellowish brown 10YR5/6, low-mod, plasticity, massive, <br /> no sand, stiff, damp. <br /> Bottom of Boring = 21 feet <br /> Reviewed by RG/CEG <br />