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SOIL BORING LOG AND MONITORING WELL COMPLETION DETAILS Monitoring Well MW-4 <br /> Project Name Singh's Unocal Project Location 574 West Grant Line Rd, Tracy, CA Page 1 of 1 <br /> Driller Gregg Drilling, Martinez, CA Type of Rig Hollow-Stem Auger Size of Drill 8 0" Diameter <br /> Logged By Ian T Reed Date Drilled October 5, 2000 Checked By Robert E Kitay, R G <br /> WATER AND WELL DATA Total Depth of Well Completed 16 5' <br /> Depth of Water First Encountered 6 0' Well Screen Type and Diameter 2" Diameter PVC Casing <br /> Static Depth of Water in Well 5 60' Well Screen Slot Size 0 020" <br /> Total Depth of Boring 16 5' Type and Size of Soil Sampler 2 0" I D Split-Barrel Sampler <br /> SOIUROCK SAMPLE DATA <br /> (DDESCRIPTION OF UITHOLOGY <br /> 0 Z LL <br /> BORING cz o CL W y standard classification, texture, relative moisture, <br /> C DETAIL 3 C$' density, stiffness, odor-staining, USCS designation <br /> ❑ ❑ m O M C7 ❑ <br /> p Street Box 1 0 Asphalt <br /> Locking Well Cap Silly CLAY (CL), gray, moist, medium stiff, 60% <br /> Portland Cement clay, 40% silt, medium plasticity, low estiimated K, <br /> �U strong hydrocarbon odor <br /> C� <br /> O CL <br /> C <br /> 5 m s OOC 5 <br /> -�-�� <br /> Clayey SILT r <br /> cn s�,ys�sys y y (ML}, gay, very moist to wet at 6 0', <br /> s, g sus s 70% silt, 20% clay, 10% fine sand, low plasticity, <br /> m m �ysy ytyt low estimated K, strong hydrocarbon odor <br />�! �❑ s s£-ass,ss.�ss <br /> Uy= <br /> 1 0 C,*, s srs�sYsrs 1 0 <br /> o Silty CLAY (CL), light brown, moist, very stiff, 70% <br /> clay, 30% sill, low plasticity, very low <br /> aestimated K, faint hydrocarbon odor <br /> O C <br /> 15 C\j0� 15 <br /> C) o <br /> ❑ � <br /> - m <br /> iv o End of Boring at 16 5' <br /> N <br /> 20 20 <br /> 25 25 <br /> 30 30 <br /> AQUA 660EN{CCE ENGONIEERS, OOdC. <br />