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Exploratory Boring Log s II <br /> Wright Environmental Services, Inc., Tracy, CA Ex P <br /> 0oJect No 4090 Boring/Well No PB-15 Well Installed No <br /> nt Cox and Cox Date Drilled Apr 19, 2001 Total Depth 25' <br /> er CMP Cement Grout Seal 25' to surface <br /> ation 595 i= 11th, Tracy, CA Logg set by tremae line filled from <br /> Drilling Method 3' OD GeoProbe bottom to top of borehole <br /> Permit- PHS EHD 0025693 <br /> Water Levels 1st Enc 11' ® 0905 Static NM <br /> Borehole <br /> Sample Cant a Depth Lithology Log Completion <br /> No PID Push CO (ft) <br /> Gravel and Road Base <br /> CL - Sandy CLAY, brown, low plasticity, massive, sand f 30% <br /> PB-i5 0 •"• <br /> stiff, damp •"• <br /> " F <br /> 5 <br /> Same as above, sand me to 50%, massive, stained gray with <br /> 2 416 some odor, stiff, damp to moist <br /> i •F <br /> F• <br /> PS 15 10 Interbedded CUSC - Sandy CLAY and Clayey SAND, stained gray, <br /> 229 " <br /> s CL-low plasticity, of sand 10-30%, SC-very low plasticity, , . <br /> f sand to 80%, saturated below 10-11 feet, firm-med dense "{F' <br /> s is $3 <br /> 1 5 SP - SAND, brown with light gray stain, fines nonplastic, sand <br /> massive, 80-90%, lost part of sample, contains thin CL interbeds <br /> at 16 feet, some gravel 14-16 feet, rued dense, saturated, h;^; <br /> minor flowing, stain fades 17-18 feet <br /> p9 FS 32 <br /> 5 <br /> 20 Same as above, massive, very poorly graded, saturated <br /> Borehole flows <br /> s_,s <br /> 16 F <br /> CL - Sandy Silty CLAY, yellowish brown 10YR 514, low F <br /> plasticity, massive, firm-stiff, damp <br /> 25 <br /> Bottom of Boring = 25 feet <br /> Reconnaissance discrete groundwater sample <br /> interval 25-21 feet <br /> Reviewed by RG/CEG <br />