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Drilling Log <br /> ❑❑❑❑❑® GROUNDWATER Monitoring Well OB-1 <br /> TECHNOLOGY <br /> Project Manna Pro owner Manna Pro Corporation <br /> Location Stockton, Cakfornra __— -_- -_ — -- - - - Prol No 020702819 <br /> c 4 U) <br /> s - vU, <br /> Description <br /> aw dN QnL Q U U Qp U <br /> o.� O a n e # N m_ N (Color, Texture, Structure) <br /> O @0 ¢ 0 N Trace C 10%, Little 10% to 20%. Some 20% to 35%. And 35% to 50% <br /> U to m K <br /> 24 <br /> SP <br /> 15 Fine SAND with little silt, light olive brown (2 5Y5/3) moderately <br /> 26 <br /> 49 25 graded (dense, rounded to subrounded, damp, no odor) <br /> 25 5M <br /> 28 38 3 10 Fine SAND, grayish brown (2/5Y5/2), poorly graded (dense, <br /> 0111-211 20 rounded to subrounded, damp, no odor) <br /> 20 <br /> 30 20 (grades dark gray (2 5Y4/1), very dense, moist, slight petroleum <br /> 17 40 SP odor) <br /> 50 <br /> 32 <br /> 353 15 (grades medium dense, wet moderate petroleum odor) <br /> 081-33 10 SILT grayish brown (2 5Y5/2) (very stiff, damp) <br /> 3 4 18 <br /> IMI lil!W <br /> 15 (grades hard, some clay, no odor) <br /> 36 411 5 30 <br /> 30 <br /> 501 s (grades little fine sand olive brown (2 5Y4/3 stiff, damp, moderate <br /> MR <br /> 38 OBI-38 6 M� petroleum odor) <br /> 12 <br /> 40 _ 8 <br /> 423 8 <br /> _ 10 <br /> - 42 — — y Encountered water 9/22/93 <br /> 466 6 Very fine SAND with little silt, dark grayish brown (2 5Y4/2) <br /> _ 081-43 6 moderately graded (medium dense subrounded, moist moderate <br /> 44 6 petroleum odor) <br /> 6 (grades some spit subrounded to rounded saturated strong <br /> 46 — 624 8 petroleum odor) <br /> OB1-4610 SM <br /> --48 -- <br /> - 50 End of boring Constructed monitoring point <br /> 52 - <br /> 54 - <br /> - 56 - <br /> 12/2211993 <br /> 2545612/22/1993 hthlog-mar93 Page 2 of 2 <br />