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LOG OF EXPLORATORY BORING <br /> ' PROJECT NUMBER 20939-011.001 BORING NO. GP-5 <br /> PROJECT NAME San Joaquin Co. Depart. of Public Works, Thornton, CA PAGE 1 OF 1 <br /> BY H. Duke DATE 4/14/98 SURFACE ELEV. NM ft. <br /> RECOVERY FID jto LITHO- WELL <br /> 15 W n J GRAPHIC DESCRIPTION DETAIL <br /> �¢W in COLUMN <br /> (ft/ft) (ppm) J in <br /> ' ASPHALT <br /> FILL <br /> SANDY SILT(ML),dark gray(7.5YR, N41); 80% <br /> low-plasticity fines; 20% fine sand; subangular; <br /> occasional fine gravel; occasional organics; damp; <br /> ' slightly degraded HC odor or organic odor. <br /> 3.5/4.0 8.0h. <br /> 5 <br /> 4/14/98 <br /> 0.5/4.0 <br /> ' 10 <br /> SAND WITH SOME SILT(SP-SM),dark brown <br /> ' (7.5YR, 4/3); 10% low-plasticity fines; 80% fine <br /> 1.5 sand; 10% medium sand; subangular; some mica; <br /> wet. <br /> ' 20/4.0 2.0 'a. ' <br /> BORING TERMINATED AT 14 FEET. <br /> ' 15— <br /> R <br /> 5 <br /> 1 <br /> 1 <br /> ' REMARKS 20 <br /> Boring advanced using direct-push GeoPmbe equipment and sampled with a 2-inch-diameter macro-core sampler. <br /> ' Temporary well casing placed to collect a groundwater grab sample. Boring backfilled from bottom to 3-inches <br /> EOMONbelow ground surface with neat cement grout,and capped with asphalt. <br /> EM ON <br />