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w <br /> a <br /> Wright Environmental Services, Tracy, CA Exploratory Boring Log <br /> Project No.4509-T Boring/Well No. B-1 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:25'to Surface <br /> Drilling Method: 3"OD GeoProbe <br /> Permit: PHS EHD#32661 <br /> Water Levels: 1st Enc: 16'@ 09:18 Static: NM <br /> Sample Push a Depth Borehole <br /> No. PID E (ft) Lithology Log Completion <br /> CO <br /> U) <br /> Asphalt Pavement <br /> ML-Sandy SILT,brown 10YR5/4,nonplastic, massive,firm,damp. <br /> B-,-, 0 5 Same as above,firm,damp. <br /> @6 <br /> @1i2 0 10 CL-Sandy CLAY, brown 10YR4/3, low plasticity,f.sand 30%, <br /> crudely bedded,stiff,damp. <br /> B-1-3 <br /> @16• 0 15 SW-SAND,varigated,fines<5%,f.-crs.sand 95%,massive, <br /> med.dense,saturated by 16 feet. Borehole caves to 15 feet after <br /> poush to 16 feet. <br /> @z1- 0 20 CL-Sandy CLAY,dark yellowish brown 10YR4/4, low plasticity, <br /> f.sand 40%, locally up to 60%,stiff,saturated;increasing clay <br /> to 21 feet. <br /> @zs 0 <br /> Same as above,f.sand 40%, massive saturated at 25 feet. <br /> R-25 <br /> Bottom of Boring=25 feet <br /> Reviewed by RG/CEG <br />