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I <br /> Drilling Log <br /> GROUNDWATER Monitoring Well MW--12 <br /> BBMTECHNOLOGY <br />• Project Chevron - Stockton Owner Chevroq USA Products Co <br /> Location 45 East Hardno Wav Project No 02070 3399 pate drilled 08/29/93 <br /> L r N <br /> E 0 Descrtpt:on <br /> �n acv CL U <br /> Q-f a E a u rD-j cn (Color, Texture, Structure) <br /> U ina t race < ID%, Little 101- to 20X, Some 20: to 35%. And 35% to 50% <br /> 24 MW- ' Gray brown silty SAND (Continued) <br /> < 0 12-25 (Grades sandy SILT 70% s)lt, 30% fine sand) <br /> 26 ,a <br /> 28 (Grades yellow brown, 60% silt 40ro fine sand most) <br /> ISw- ML <br /> 12-30 ' <br /> 30 0 a (Grades gray brown 30% sett, 30% fine sand, 20% clay) <br /> �o <br /> �z <br /> - 32- <br /> - 34 - <br /> - <br /> 234_ 12-35 <br /> 0 $ Light gray CLAY BD' silt, 10% silt, 10% fine sand (slightly <br /> 36 15 moist, brittle, low plasticity, no hydrocarbon odor) <br /> CL <br /> 38 <br /> MW- <br /> 12-4 0 <br /> 40 I 0 5 Yellow brown SILT 60% silt 20% clay, 201-0 fine sand (sfibhtly <br /> 7 MM5t low hydrocarbon odor) <br /> t2 <br /> -42- <br /> -44- <br /> 244 - Mw- <br /> 12-45 <br /> w- <br /> t2-qi (Grades sandy SILT 60ro sand 20% clay 20% fine sand) <br /> n <br /> ML <br /> 4B <br /> M (Grad-as B0: silt 10% clay, 10% fine sand) <br /> 50 ' 0 12`5 s Yellow brown sandy SILT 50% silt 30% fine sand 20% clay <br /> rc trace mica (slightly moist low plasticity trace cairc:he <br /> vecns no hyOTocarbon odor) <br /> 52 water 06/29/93 <br /> 4 MW_ <br /> 12-55 <br /> p $ SrQwn and blacti mottled SILT 801*01 silt 1C% fine sand 1c% c.16y <br /> trace fine gravel trace mica imo,st, low plasticity no <br /> hvdroCCrbon odor) <br /> nRr�nft9�3 ktnfvp-marg7 <br />