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Drilling Log <br /> ❑�® GROUNDWATER Monitoring Well OB-2 <br /> ❑❑❑ TECHNOLOGY <br /> Project Manna Pro owner Manna Pro Corporation <br /> Location Stockton, Cahforma Prol No 020702819 <br /> C 0 � T N <br /> Z— `" 2 @ Description <br /> CL �-W OE 0 'q 'o - rn U <br /> a� N— U <br /> E a s a v N (Color, Texture, Structure) <br /> 0 Ul m cc � Trace < 10%, Little 10% to 20%. Some 20% to 35%, And 35% to 50% <br />� <br /> 24 - <br /> - SM <br /> 4 15 SAND, very fine to fine, yellowish brown (10YR5/6) wsth some <br /> 26 0132-25 5 grayish brown (2 5Y5/2) mottling, poorly graded (dense, <br /> 30 subrounded, damp, moderate petroleum odor) <br /> 30 <br /> 28 13 (grades grayish brown (2 5Y5/2), rounded to subrounded, no odor) <br /> 3 30 <br /> 35 <br /> SP <br /> 30 25 20 r (grades very dense, moist, slight petroleum odor) <br /> 082-3035 <br /> 32 40 <br /> 1314 15 (grades fine, strong petroleum odor) <br /> 082-33 20 SILT with some clay, gray (5Y5/1) (hard, moist moderate <br /> 34 -- <br /> 4 350 25 petroleum odor) <br /> 70 10 (grades trace calcium carbonate nodules, olive gray (5Y5/2) slight <br /> M36 062-35 25 petroleum odor) <br /> 25 ML <br /> (grades trace clay, olive brown (2 5Y4/3) stiff, moderate <br /> 38 485 5 petroleum odor) <br /> 0132-38 5 <br /> 6 <br /> 40 = Soo 7 Fine SAND with little s11t, brown (10YR4/3) moderate grading <br /> 0132-40 58 odor) dense, rounded to subrounded moist strong petroleum <br /> 12 5M <br /> 42 Q Encountered wafer 9/22/93 <br /> — 4 SILT with trace clay, light olive brown (2 5Y5/3) (stiff, moist <br /> 531 0132-435 8 strong petroleum odor) <br /> 44 = 12 ML (grades dark greenish gray (5GY4/1)) <br /> g SAND with some silt, dark greenish gray (5GY4/1) moderate <br /> 197 S grading (medium dense, rounded to subrounded, saturated <br /> 46 — 12 moderate petroleum odor) <br /> 48 = sM <br /> 50 End of boring Constructed monitoring point <br /> 52 <br /> • 54 <br /> 56 <br /> 1 12/22/1993 Mhlog-mar93 Page 2 of 2 <br />