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Drilling Log SB-7 <br /> Soil Boring <br /> GROUNDWATER <br /> DQ� T ECHNOLOGY <br /> Chevron USA Products Comoanv <br /> Project <br /> Ch vron - S. Cenrer Stockton Owner proi.No. 0207 ` <br /> Location 139 South Center St.. Stockton. CA <br /> N Description <br /> 9 <br /> Texture, Structure) <br /> > L a (Color. <br /> L^ p E d o o a o V Some 20% to 35%, And 35% to 50% <br /> aa)_ 0-a E o N Trace < 10%, Little toy to 20%. <br /> 0 to m x Lo <br /> Silty CLAY (20,801: olive-gray, damp, no hydrocarbon odor. <br /> 24 <br /> 1s <br /> 26 Se-7 19 <br /> 0 -28.5 <br /> 28 <br /> CL <br /> 30 9 <br /> 21 <br /> SB-7 39 <br /> 0 -3tS <br /> 32 <br /> 34 Silty CLAY (40.60): green-gray, damp, hydrocarbon odor_ <br /> S <br /> 6 <br /> 36 5g-7 12 1145 hrs. <br /> 14.9 -365 v i Static water, 11/29/95. <br /> 38ND (30.40.401: dark green-gray, moist. <br /> Clayey silty very fine SA <br /> hydrocarbon odor- <br /> 40 6 <br /> 6 ML <br /> I Se-7 5 <br /> 33.9 -ai5 <br /> ' 42 <br /> (grades clayey SILT (40.60)) <br /> 44 12 v <br /> a 16 ttl29/95 <br /> SB-7 20 End of boring. <br /> 4.7 <br /> -45.5 <br /> 46 <br /> 48 <br /> 50 <br /> 52 <br /> 54 <br /> Page: 2 0- <br /> 56 <br /> 01/04/t996%thlog-aec..93 <br /> ;:i <br />