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a <br /> 1 <br /> Drilling Log <br /> ❑O❑ GROUNDWATER Soil Boring SB-9 <br /> TECHNOLOGY <br /> Project Chevron/Stockton Owner Chevron USA Products Co <br /> Location 45 E I-lard+nq WaV, Stockton CA Pro( No 02070 4527 <br /> aw ❑a m o o n°1 Description <br /> o" a s E X u �� N (Calor, Texture, Structure) <br /> to ° CD N <br /> U) Trace < 10X, Little 10% to 20%, Some 20% to 35%, And 35% to 50% <br /> m x � <br /> _ 24— <br /> 10 <br /> 58-9 12 Brown clayey sandy GRAVEL (continued) <br /> 0 -25 18 <br /> 26 G0 <br /> t <br /> 28 Mottled orange, brown, and olive gray silty CLAY (25,75) with abundant <br /> root casts (moist, no hydrocarbon odor) <br /> 5 <br /> 30 S8-9 8 CL <br /> 0 -30 12 <br /> 32 (grades sandy) <br /> Brown—gray fine to medium SAND (moist, loose, no hydrocarbon odor) <br /> k4- <br /> S13_9 <br /> 2 SW <br /> 0 -35 6 , <br /> 36 <br /> 38 Olive—gray/brown orange silty CLAY (10,90) (moist, no hydrocarbon odor) <br /> 7 <br /> 40 SB-9 12 <br /> 5 -40 14 CL <br /> 4z <br /> 44 Brownish gray silty CLAY (20,80) (most, no hydrocarbon odor) <br /> 1z <br /> SB-9 25 <br /> 4 -45 30 <br /> 46— CL <br /> 48 (grades orange brown, most to wet) <br /> 0 3 <br /> 58-9 4 CL <br /> -49 6 <br /> 50 End of boring <br /> - 52 - <br /> 54- <br /> - 56 - <br /> 06/t6/199A <br /> 2545606/18/199a htNog-mar93 Page 2 of 2 <br />