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Drilling Log <br /> ❑OGROUNDWATER Soil Borin SB-1 <br /> LS <br /> TECHNOLOGY 9 <br /> Project Chevron/Stockton owner Chevron USA Products Co <br /> Location 45 E Harding Way, Stockton, C.4 Pro( No 02070 4895 <br /> g - > <br /> 4) o s� Description <br /> aL a U V Q p C? <br /> �,. a s e z �, o� N (Color, Texture, Structure) <br /> U) -m° K j Trace < 10X. Little 10X to 20%, Some 20X to 35%, And 35% to 50X <br /> 24 <br /> ML Brown clayey SILT (continued) <br /> 33 <br /> 26 is 58-1 50/5 <br /> -25 Mottled green-gray and brown silty sandy CLAY (30,30,40) with white <br /> calcareous streaks and black root casts (very moist, no hydrocarbon <br /> CL odor) <br /> 2B <br /> 30 Mottled brown and gray silty CLAY with black-lined root casts (moist, no <br /> 12 CL hydrocarbon odor) <br /> 0 58-1 13 <br /> -30 28 <br /> 32 (grades to gray silty CLAY with black-lined root casts) <br /> 34 CL <br /> 15 <br /> -36- 0 58-1 38 <br /> -35 42 Gravelly fine to medium SAND (5,95) - pebbles 3-5mm <br /> 38 SIN <br /> (grades to gray brown silty CLAY) <br /> 40 10 Mottled gray and brown silty sandy CLAY (10,30,60) with pale chalky <br /> 0 58-1 20 patches black coated root casts, and few black pebbles, 2-5mm (moist, <br /> -40 30 no hydrocarbon odor) <br /> 42 CL <br /> 44 <br /> 17 Mottled brownish gray andohve gray silty CLAY (10,90) (moist, no <br /> 46- 0 SB-1 42 hydrocarbon odor) <br /> -45 50 <br /> 48 ct_ <br /> 12 Mottled brown and olive gray silty CLAY (20,80) with streaks and patches <br /> 0 S6-1 18 of white chalk (moist to wet, no hydrocarbon odor) <br /> -50 42 ML {grades to clayey SILT (30 60) <br /> 52 End of boring <br /> z <br /> 54 <br /> 5s <br /> 02/11/1994 Gthlog—mare3 Page 2 of 2 <br />