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Drilling Log <br /> ® GROUNDWATER Soil Boring SB-6 <br /> EETECHNOLOGY <br /> • Project Chevron/Stockton Owner Chevron USA Products Co <br /> Location 45 E Harding wav Stockton, CA Prol No 02070 4527 <br /> qF o Q w z 0 a Description <br /> EL) a o <br /> X 0 W-J to (Color, Texture, Structure) <br /> N �° Trace < tOX, Little 10X to 20X. Some 20X to 35%. And 35% to 50X <br /> 24 58-6 6 Gray silty CLAY (continued) <br /> 0 -25 9 <br /> 28 CL <br /> 28 Orange brown micaceous clayey sandy SILT (5,15,80) (moist, crumbly no <br /> hydrocarbon odor) with specks of white <br /> 3 <br /> 30 SB-154 <br /> 0 -30 7 <br /> ML <br /> 32 <br /> 34 s <br /> 7 <br /> 0 -35' 14 <br /> 59-8 <br /> Mottled brown, orange and gray clayey SILT (30,70) <br /> 36 <br /> CL <br /> 38 <br /> (grades with gray and brown silty CLAY (10,90) to (30,70) with black lined <br /> 7 root casts and chalky patches <br /> 40 SB-6 n <br /> o -40' 13 <br /> CL <br /> � 42— <br /> 44 14 (grades darker brown) <br /> 5e-6 26 Mottled brown and gray silty CLAY (20,80) (most) <br /> 0 -45 44 4 6 CL <br /> Encountered water, 5/9/94, 1725 hrs <br /> 48 o s6-6 ML Brown-orange clayey SILT (35 65) (wet) <br /> -48 <br /> 50 End of boring <br /> 52 <br /> • 54 <br /> 56 - <br /> 06/16/1994 Gthsog—mar93 Page 2 of 2 <br />