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Drilling Log <br /> ��❑❑® GROUNDWATER Extract / Inject Well VE-4 <br /> TECHNOLOGY <br /> Project TES - Stockton Owner Texaco Environmental Services <br /> Location 440 West Charter Way Project No 02320 2570 Date drilled 04/27/92 <br /> a� �� Xa moo tom, Description <br /> Q-- 3 E o a E 3 v m� (Color, Texture, Structure) <br /> 10 °ir0 N Trace < 10%, Little 10% to 20%. Some 20% to 35%, And 35% to 50% <br /> U mX Z) <br /> 24 10 0 CL Greenish brown silty CLAY (dry, product odor) <br /> sw Brown medium to coarse SAND (well-graded, product odor) <br /> 26 Light gray-green silty CLAY (slight product odor) <br /> CL <br /> 28 ML Mottled green-brown clayey SILT with white streaks (damp, product <br /> odor) <br /> 62 E <br /> 30 Tan to light gray CLAY (stiff, slight product odor) <br /> (Grades with green-gray mottling) <br /> 32 = <br /> Green-gray CLAY (stiff, product odor) <br /> 34 = 28 F CL <br /> • 36 <br /> = I <br /> (Grades with silty CLAY/clayey SILT layers) <br /> 38 = 5 G <br /> Gray-green clayey, micaceous SILT (wet, strong product odor) <br /> 40 = l� H ML Encountered water at 40 feet on 04/27/92 (1100am) <br /> End of bcring at 40 5 feet Installed nested vapor extraction wells <br /> 42 screened from 40 5 to 30 5 feet and from 25 to 15 feet <br /> 44 <br /> 46 <br /> 48 <br /> 50 <br /> 52 <br /> 54 <br /> - 56 - <br /> 05/08/1992 hthlog-marK Page 2 of 2 <br />