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LOG OF EXPLORATORY BORING <br /> ' PROJECT NUMBER 20939-011.001 BORING NO. GP-2 <br /> PROJECT NAME San Joaquin Co. Depart. of Public Works, Thornton, CA PAGE 1 OF I <br /> ' BY H. Duke DATE 4/14/98 SURFACE ELEV. NM ft. <br /> RECOVERY FID y in LITHO- WELL <br /> jd GRAPHIC DESCRIPTION DETAIL <br /> J <r COLUMN <br /> (ft/ft) (ppm) to <br /> 7' ASPHALT <br /> FILL <br /> SANDY SII T(ML), dark gray(7.5YR, N4/); 70% <br /> low-plasticity fines; 20% fine sand; 10% medium <br /> to coarse sand; subangular; trace fine gravel; <br /> ' trace organics; damp. <br /> 2.5/4.0 0.0 . SAND WITH SOME SILTSPS <br /> ( M), dark brown <br /> (7.5YR, 4/3); 10% low-plasticity fines; 70% fine <br /> ' S - sand; 20% medium sand; subangular; some mica; <br /> damp. <br /> 0.0Szr . . <br /> ' . . . As above; moist. <br /> 4/14/98 <br /> 20/4.0 . <br /> ' @ 8': wet. <br /> ' 0.5 10-11 . . <br /> ' 3.0/4.0 0.5 ;X <br /> ' As above; wet. <br /> 1.5/2.0 0.5 '+' <br /> BORING TERMINATED AT 14 FEET. <br /> ' 15 <br /> 1 <br /> 1 <br /> ' REMARKS 20 <br /> Boring advanced using direct-push GeoProbe equipment and sampled with a 2-inch-diameter macmcore sampler. <br /> Temporary well casing placed to collect a groundwater grab sample. Boring backfilled from bottom to 3-inches <br /> EOMONbelow ground surface with near cement grout,and capped with asphalt. <br /> EM ON <br />