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\ Drilling Log <br /> � GROUNDWATER Monitoring Well MW-7 <br /> 'D TECHNOLOGY <br /> Project Chevron - S. Center Stockton Owner Chevron USA Products Comoany <br /> Locatio-) 139 South Center St., Stockton, CA Proj.No. 02070 0068 <br /> ° - � Description <br /> pE _d o o 0 U <br /> 0.0 <br /> a �2- (Color, Texture, Structure) <br /> Ov n m X j Trace < 10%. Little 10X to 20%, Some 20% to 35%. And 35% to 50% <br /> — 24--_ i I Silty CLAY (30.70): brown, dry to damp, no hydrocarbon odor_ <br /> MW-7 <br /> 26 • < <br /> CL <br /> 28 -- <br /> - 30-- <br /> 8 •30 (grades with lenses of sandy clayey SILT (20.25,55):brown-gray) <br /> Mw-7 <br /> 0.7 -3t0' <br /> 32 _ <br /> Silty CLAY (30.70): to clayey SILT (70,30): green-gray, damp, <br /> = hydrocarbon odor. <br /> 34 Lr <br /> Static wafer, 1620 hrs. <br /> = MW-7 <br /> 36 <br /> 2.3 -36.0' <br /> 38 =_ Clayey silty fine SAND (20,20,60): dark green-gray, moist, loose, <br /> hydrocarbon odor. <br /> — i <br /> — I <br /> -40 — :. — Mw-7 1 <br /> — 10.4 -,1.0' i <br /> 42 — <br /> 44 <br /> — 53.0 <br /> — Mw-7 (grades interbedded with sandy silty CLAY and clayey SILT) <br /> —46— = bas <br /> 48 <br /> SHIM <br /> 50 — •. <br /> — MW-T <br /> — 32.3 -51.0• <br /> 52 End of boring. Monitoring well installed. <br /> 54 <br /> Sfi <br /> ot/0�e/1996 ithloq—oec.,93 Page: 2 of 2 <br />