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Drilling Log <br /> DBM <br /> GROUNDWATER Monitorin Well MW—Z1 <br /> TECHNOLOGY g <br /> Project Chevron/E Hardrno owner Chevron USA Products Co <br /> Location Stockton Ca Project No 02320-2672 Date drilled 05/11/92 <br /> C a; H <br /> oS goo t� Description <br /> o" E a Q e CL <br /> a (Color, Texture, Structure) <br /> L) U)MRwpm 7 Trace < IDX, Littie 10% to 20%. Some 20% to 35%, And 35% to 50% <br /> 66 I s Dark brown sandy clayey SILT (continued) <br /> 68 <br /> (grades brown clayey SILT) <br /> 60 = ML <br /> L b1Encountered groundwater at 610 feet on 05111192 <br /> 62 — <br /> Brown s111y CLAY <br /> -64 - <br /> 0 1s <br /> 6 6 — M 27 <br /> 32 <br /> 68 - <br /> CL <br /> 7 0 — 0 1s <br /> N 18 <br /> 25 <br /> 72 — (grades with minor fine sand) <br /> 74 <br /> 76 - <br /> End of boring at 75 0 feet Installed groundwater monitoring well <br /> 78 <br /> 80 <br /> 82 <br /> 84 <br /> 86 <br /> 88 <br /> 07/20/1992 1dhlog—mart/ <br /> Pape 3 of 3 <br />