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THE <br /> LOG OF SOIL BORING <br /> G <br /> LABO_RATORIE5. ING. BORING MW-1R4 <br /> Project: Frontier Transportation Project Number: B23502.01 j <br /> Location: 425 Larch Road, Tracy, CA Date Started: August 15, 1996 <br /> Logged By: Patricia ,hones Date Completed: August 15, 1996 <br /> Drilled By: Leo Praet Drill Type: CME-75 <br /> Auger Type: HSA <br /> Depth to Groundwater: 10.5 feet Elevation: <br /> DEPTH SOIL SYMBOLS <br /> SAMPLER SYMBOLS USCS B[owx per <br /> (fast) AND FIELD TEST DATA Soil Description toot R*marici <br /> Asphaltic—concrefe Pavement <br /> CL .............. <br /> CLAY sand very dark- gray <br /> (2.5Y, 3/1�,� slightly plastic <br /> ' to plastic, 25% very fine to <br /> fine sand, slightly moist, no <br /> odor <br /> 5 <br /> Some, darn gray brown (2.5Y, <br /> 4/2), slightly plastic, 35% <br /> sand, moist <br /> Some. light brown gray (2.5Y, <br /> 6/2), plastic, 30% very fine <br /> sand, moist to very moist <br /> 102/6 Same, gray (2.5Y, 5/1) PiD: 975 ppm <br /> =42/6 5 <br /> 3/6 <br /> Bottom of Boring <br /> 15 <br /> 1 <br /> 20 <br /> 25 <br /> 1 <br /> 30 <br /> Notes: Since hydrocarbon vapors were detected in the soil sample collected <br /> from 10 feet below grade, the boring was abandoned. The baring was <br /> backfilled with. Portland cement concrete. <br />