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Wright Environmental Services, Inc., Tracy, CA Exploratory Boring Log <br /> Protect No 4090 Boring/Well No PS-20 Well Installed No <br /> 4lient Cox and Cox Date Drilled Apr 20, 2001 Total Depth 26' <br /> location 595 E lith, Tracy, CA Logger CMP Cement Grout Seal 26' to surface <br /> Drilling Method 3° OD GeoProbe seal set by tremae line filled from <br /> Permit: PHS EHD 0025693 bottom to top of borehole <br /> Water Levels 1 st Enc 10 5-11' ® 10 50 Static NM <br /> Sample Cont a Depth Borehole <br /> No PID Push CO (ft) Lithoiogy Log Completion <br /> Road Base <br /> m <br /> 0 CL - Sandy CLAY, brown, low plasticity, f crs sand, 30-40%, <br /> massive, stiff, damp <br /> c <br /> = 5 <br /> 0 t SP - SAND, brown to yellowish brown, f sand 90%, fines 10% ^ "+ <br /> nonplastic, massive, no stain or odor, med dense, damp <br /> 10 <br /> Ps 200 SC - CLayey SAND, yellow brown, f sand 80%, fines 10% and <br /> 2 low plasticity, clayey interbeds 1" thick, o/w massive, <br /> mod dense, saturated below 10 5-11 feet <br /> 15 <br /> PS-20 a SP - SAND, brown, v f-f sand 90%, massive, borehole flows, <br /> a loose, saturated <br /> 20 <br /> Pa 20 0 Same as above, loose, saturated <br /> a <br /> Same as above, sharp contact to underlying <br /> .�. <br /> Pe-200 25 SC - Clayey SAND, yellow brown, low plasticity, f sand 80%, ^'•' <br /> fines 20%, crudely bedded, loose-med dense, saturated ^ " <br /> Bottom of Boring = 26 feet <br /> Reconnaissance groundwater sample <br /> interval 26 to 22 feet <br /> Driller calls parted threads on <br /> water sampler, lost under flowing sand, <br /> sampler cemented into borehole below sand <br /> Reviewed by RG/CEG <br />