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Wright Environmental Servic. Tracy, CA -ploratory Boring Log <br /> Project No. 4889 Boring/Well No. B-1 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: 18.5'to Surface <br /> Drilling Method: 3" OD GeoProbe <br /> Permit: PHS EHD#32663 <br /> Water Levels: 1 st Enc: 13.5' Static: 11.9' @ 10:10 <br /> Sample Push °1 Depth Borehole <br /> No. PID (ft) Lithology Log Completion <br /> Hand Augered to 5 feet. <br /> CL-Silty CLAY, brown 10YR4/3, low plasticity, no sand, stiff, damp. <br /> 5 <br /> 61 1 0 Same as above, stiff, damp. <br /> w <br /> 0 <br /> MSame as above, crudely bedded, very stiff, damp. <br /> 61-2 0 <br /> (o�1z tg <br /> 10 <br /> Same as above, crudely bedded, very stiff, damp, increasing <br /> moisture 12-14 feet, becomes saturated at 13.5 feet. <br /> 613 <br /> 016 0 <br /> 15 SAND, brown 10YR4/3, nonplastic fines<10%, f. sand 90%, contains <br /> very thin clayey interbeds, saturated. Pushes hard to 17 feet. <br /> 0186 0 CL- Silty CLAY, brown 10YR4/3, low plasticity, f. sand 55, massive <br /> to faintly bedded, very stiff, damp, driller calls push refusal at 18.5 feet. <br /> 20 <br /> Bottom of Boring= 18.5 feet, <br /> continuously cored at downgradient <br /> location from former UST location. <br /> Reviewed by RG/CEG <br />