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❑❑® Drilling Log k <br /> ❑�0 GROUNDWATER Soil Boring SB-4 <br /> TECHNOLOr Y <br /> Project Chevron-S. Center, S'_�ckton Owner Chevron <br /> Location 139 South Center. S,c:kton, CA Proj. No. 02070 5039 <br /> r� p ;, o o ui 0 Description <br /> a: ..a a c o �o <br /> 4)_ a a m '- (Color, Texture, Structure) <br /> mo x .5 W Trace < 10%, Little 10% to 20%. Some 20% to 35%. And 35% to 50% <br /> 24 5 Brown pebbly, clayey, silty, fine SAND (cont.) <br /> SB-4 t2 �'I SM <br /> 180 -25' 14 Brown silty CLAY (20,80) (moist, crumbly, strong hydrocarbon odor) <br /> 26 % <br /> CL <br /> i. <br /> 28 <br /> 30 SB-4 11 i Bluish gray silty CLAY (20,80) (moist, strong hydrocarbon odor) <br /> 160 -30' 2 <br /> j I <br /> 32 <br /> i <br /> I <br /> 34 2 CL <br /> SB-4 4 <br /> 150 -35' 9 <br /> 36 <br /> I <br /> 38 <br /> 40 i. <br /> lit Dark gray clayey SILT (10,90) (moist to wet, strong hydrocarbon odor) <br /> 6 ' I ML <br /> - 42- <br /> 180 <br /> 2 180 Se-4 a <br /> -43' 10 I <br /> 44 — End of boring. <br /> 46 <br /> 148— <br /> l� <br /> 1. <br /> I- 50- i <br /> - 52 - <br /> i <br /> -54— ' <br /> 56 i <br /> 06/09/1994 fithlog-mar93 Page: 2 of 2 <br />