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Drilling Log , <br /> GROUNDwA, ER <br /> Soil Boring SB— <br /> 4 <br /> Project Chevron-S. Center. 5,. �kron Owner Chevron <br /> Location 139 South Center. S =Kron, CA Prof. No. 02070 5039 <br /> \ � y <br /> ='= �E Q 0 u -'-a Descripti®n <br /> ai <br /> CU <br /> Z a <br /> 0., a s e s ;,- U (Color, Texture, Structure) <br /> j Trace < 10%. Little 10% to 20%. Some 20% to 35%, And 35X to 50%CD X <br /> 24 5Brown pebbly, clayey, silty, fine SAND (cont.) <br /> S6-4 12 I I SM <br /> Iso -25' 14 <br /> 26 Brown silty CLAY (20,80) (moist, crumbly, strong hydrocarbon odor) <br /> CL <br /> 28 <br /> 30 SB-4 11 Bluish gray silty CLAY (20,80) (moist, strong hydrocarbon odor) <br /> 160 -30' 13 <br /> - 32 - <br /> - 34- 2 CL <br /> SB-4 4 <br /> 150 -35' 9 <br /> 3fi ' <br /> s <br /> 38 <br /> -40- <br /> Dark gray clayey SILT (10,90) (moist to wet, strong hydrocarbon odor) <br /> � I <br /> 42 5 ! ML <br /> 180 SB-4 8 <br /> -43' t0 t I <br /> 44 {—' End of boring. <br /> i <br /> I <br /> 46 <br /> - 48 - <br /> I� <br /> ko - <br /> - 52 <br /> ! I <br /> I <br /> 54 - <br /> 56 <br /> 4 56 <br /> D6/(1B/1GR4 6thiog-mart/ Page: 2 of 2 <br />