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Drilling Log <br />❑❑❑GROUNDWATER Monitoring Well MW -1 <br />TECHNOLOGY <br />Protect Chevron -Charter way, StoCkon Owner Chevron USA Products ComDanv <br />Location 508 Charter wav Stockton CA Prol No 02070 0071 <br />04/12/1995 <br />C <br />-0 <br />WE <br />O <br />o E _ <br />s <br />m <br />Description <br />CL <br />cu <br />S <br />CL <br />a°u <br />a s s a <br />ao <br />m_ <br />N <br />(Color, Texture, Structure) <br />V <br />N <br />N <br />Trace < 10%. Little 10% to 20%, Some 20% to 35%, And 35% to 50% <br />7 <br />24 <br />CL <br />Sandy silty CLAY (cont) <br />< <br />< <br />Mw -1 <br />34 -25' 7 <br />Silty CLAY (40,60) green -gray, moist, moderate hydrocarbon <br />26 <br />a <br />15 CL <br />odor <br />(grades clayey sandy SILT 30,30,40) <br />28 <br />ML <br />30 <br />MW -1 <br />62 -30 9 <br />= <br />9 <br />8 <br />Medium SAND greenish gray, well sorted, angular/subangular, loose, <br />32 <br />— <br />' ' <br />moist, moderate hydrocarbon odor <br />_— <br />SP <br />_34- <br />— <br />M35 <br />38 -35 - <br />Encountered Water, 03/15/85, 1018 hrs <br />-36- <br />= <br />Silty CLAY (25,75) tan, moist to wet, moderate hydrocarbon odor <br />_ <br />CL <br />-38- <br />3BClayey, <br />Clayey, silty very fine SAND (20,40,40) dark gray/green gray, <br />-40 <br />— <br />— <br />Mw -1 <br />2 -40 6 <br />with dark brown plant/twig fragments <br />-42 <br />— <br />= <br />11 <br />ML <br />-44- <br />Clayey SILT (45 55) dark green -gray, wet, moderate degraded <br />— <br />1'k <br />7 -45 45 8 GL <br />hydrocarbon odor <br />-46- <br />= <br />81 <br />13 5P <br />Lense of medium SAND <br />48 <br />= <br />cL <br />— <br />Clayey medium SAND (10,90) dark green -gray, subrounded, with <br />-50 <br />— <br />3 -50 -50M14- <br />10 <br />silty clay lenses, wet moderate degraded hydrocarbon odor <br />iris <br />11 <br />-52- <br />17 <br />End of boring Installed groundwater monitoring well <br />-54- <br />54-56 <br />-56- <br />04/12/1995 I, slog-mars"3 Page i of 2 <br />