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Wright Environmental Services, Inc, Tracy, CA Exploratory Boring Log <br /> Projeot No 4529 Bonng/Well No B-4 Well Installed No <br /> Client City of Tracy Date Drilled Feb 10, 2003 Tota! Depth 21 ' <br /> Location 560 Tracy Blvd , Tracy, CA Logger CMP <br /> Dnllmg Method 3" OD GeoProbe Cement Grout Seal 21 'to surface <br /> Permit- PHS EHD 32664 <br /> Water Levels 1 st Enc 12'+ Static NM <br /> Sample Blow T Depth <br /> No PID Count ` E1 Lithology Log Borehole <br /> Completion <br /> (ppm Concrete pavement <br /> ML-Clayey SILT, brown 10YR5/3, low plasticity, f sand 40%, firm, <br /> damp <br /> 0 Pust 5 Same as above, firm, damp <br /> nF� <br /> A IV <br /> A A <br /> ~ I <br /> 46 0pus 10 CL- Sandy CLAY stained gray, low plasticity, f sand 25%, massive, <br /> weak odor, stiff, damp A h <br /> nAn <br /> Ate/` <br /> wnh <br /> 46 pus 15 SC- Clayey SAND, stained gray, clay 35% low plasticity, f sand 65%, <br /> A YAI\ <br /> massive, med dense, saturated below 13 feet, sheen on sample <br /> �hh <br /> Driller calls change at 18 feet <br /> hAw <br /> Sz <br /> pus 20 CL- Sandy CLAY, stained gray, low plasticity, f sand 45%, occurs <br /> as laminae o/w massive, stiff, damp, less stain at 21 feet, color <br /> change to brown f OYR513 <br /> Bottom of Boring = 21 feet <br /> separate phase product on water <br /> Reviewed by RG/CEG <br />