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j n Drilling Log <br /> GROUNDWATER <br /> TECHNOLOGY Monitoring Well MW-13 <br /> DD <br /> Project Texaco/Stockton owner Texaco Environmental Services <br /> Location 440 Charter way, Stockton, CA. Pro{.No. 02070 2569 <br /> C 0 A o; <br /> o tJ 9) <br /> oe g > t� Description <br /> a a °v a o U <br /> ov 3 E a.a E 3 d 'D-1 cn (Color, Texture, Structure) <br /> 0 N m X j Trace < 10%. Little 10% to 20%, Some 20% to 35%. And 35% to 50% <br /> 24 j <br /> 7 <br /> ML Olive gray clayey SILT (continued) <br /> 26 -10.5 MW-13 17 <br /> -25• 24 Olive gray clayey SILT to very tine SAND (moist) <br /> ML <br /> 28 <br /> 30 = e <br /> 0 MW-13 s Greenish gray CLAY (moist, no hydrocarbon odor) <br /> -30' 13 <br /> 32 <br /> 34 = CL <br /> 16 <br /> 36 - 0.5 MW-13 20 <br /> I -35' 21 <br /> = Static depth to water, 9-2-93, 1700 hrs. <br /> 38 <br /> 40 = Encountered water, 9-2-93, 1100 hrs. <br /> s <br /> 0.5 MW-13 17 <br /> _ j -40' 25 Dark bluish gray silty CLAY (moist, no hydrocarbon odor) <br /> 42 = CL <br /> 44 <br /> 17 Dark gray clayey fine SAND (very wet, degraded hydrocarbon <br /> 46 = 1.0 MW-13 28 odor) <br /> -45 30 <br /> 48 : = sc <br /> 50 :-•I <br /> 7 (grades with silt, increasing degraded hydrocarbon odor) <br /> 7.0 MW-13 7 <br /> -50' 8 <br /> 52 End of boring. Installed monitoring well. <br /> 54 <br /> 56 <br /> I <br /> II/16/1993 HtNog-mar93 Paoe: 2 of 2 <br />