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Drilling Log <br /> GROUNDWATER❑❑� TECHNOLOGY Extract / Inject Welt VE-4 <br /> Project TES - Stockton Owner I exacc Environmental Services <br /> Location "0 west Cna•rer Wav Prosect No 02320 2570 Date drilled 04/27/92 <br /> a " Description <br /> G- yd � E doo tp� U <br /> �-� a o a E s v �_ N (Color, Texture. Structure) <br /> 0 �mK 0 j Trace < 10%, Little 10% to 20%. Some 20% to 35%, And 35% to 50% <br /> 24 10 D CL Greenish brown silty CLAY (dry, product odor) <br /> 5w Brown medium to coarse SAND (well-graded, product odor) <br /> 26 Light gray-green silty CLAY (slight product odor) <br /> CL <br /> 26 ML Mottled green-brown clayey SILT with white streaks (damp, product <br /> r) <br /> sz E odo <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 /> `• 3 6 = <br /> -I = (Grades with silty CLAY/clayey SILT layers) <br /> 36 = 5 G Gray-green clayey micaceous SILT (wet, strong product odor) <br /> 40 = 17 H ML Encountered water at 40 feet on 04/27/92 (1100am) <br /> End of boring at 40 5 feet Installed nested vapor extraction wefts <br /> 42 screened from 40 5 to 30 5 feet and from 25 to 15 feet <br /> 44 <br /> - 46 - <br /> 46 <br /> 50 <br /> 52 <br /> 54 <br /> 56 <br /> 05/08/1992,untag-mar92 Paae 2 of 2 <br />