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Drilling Log <br /> ��❑ GROUNDWATER Soil BoringSB-7 <br /> TECHNOLOGY <br /> Proiect Chevron/Stockton Owner Chevron USA Products Co <br /> Location 45 E Hafdrna Way, Stockton CA Prot No 02070 4527 <br /> Q1. 7+ <br /> ►+ C <br /> a� oa +v o o Qo U Description <br /> C3 n E s W-' rn (Color, Texture, Structure) <br /> 1° ° ¢ 0 U Trace < 10%, Little 10% to 20%. Some 20% to 35%. And 35% to 50% <br /> in m x <br /> 24 7 <br /> SB-7 11 Brown silty CLAY (continued) <br /> 0 -25 1e <br /> 26 <br /> CL i <br /> 28 - <br /> 4 <br /> 30 S9-7 4 Orange brown clayey sandy SILT (20,10,70) with abundant root casts or <br /> o -30 5 burrows (moist, no hydrocarbon odor) <br /> 32 ML <br /> (grades with sand) <br /> 34- 1E <br /> SB-7 13 Orange brown togray clayey silty coarse SAND (10,20,70) (moist, no <br /> 0 -35 8 hydrocarbon odor) <br /> 36 sc <br /> (grades gray) <br /> 38 <br /> Greenish gray silty CLAY (10,90) with chalky streaks and patches (moist, <br /> B no hydrocarbon odor) <br /> 40 SB-7 15 <br /> 0 -40 Is <br /> CL <br /> - 42- <br /> 44- (grades mottled greenish gray, brown, and orange-brown) <br /> n <br /> 0 -45 22 <br /> -46- 58-7 t8 CL <br /> 48 0 58-7 <br /> -48 5 Mottled tan and orange brown silty sandy CLAY (25,25,50) (moist, no <br /> 7 CL hydrocarbon odor) <br /> 50 End of boring <br /> 52 - <br /> 54 - <br /> 06/18/1994 11tNog-mar93 <br /> 25406/18/199411tNog-mar93 Page 2 of 2 <br />