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West & Hansen Engineers , Inc. <br /> PO Box 5891, Vacaville CA 95696 <br /> o ect Stockton AASF Aircraft Nash ad System Job No. 6788--15 <br /> ocation Discharge Pit Date October 10, 91 <br /> Boring Designation P-2 Driller West & Hansen Engineers, Inc <br /> Logged by: BWW Base Vacaville <br /> Boring Location Next to Outlet Drill Equipment Hand Auger <br /> Soils Classification System USCS Diameter & Type Well Casing <br /> Sample type.BRASS TUBE - SPLIT SPOON NA <br /> Soil Matrix YES Elevation & Datum NA <br /> Date Started Sept 13, 91 Finished Sept 13 Completion Depth 10 feet <br /> Number of Samples Three Depth to Groundwater, Unknown <br /> Depth �' v = ` <br /> 6 Lithology Observations Field Well <br /> (feet) ti Analysis Construction <br /> 9-1 <br /> 0 P-2- Dirt Pit Bottom <br /> Silty sand I ! <br /> 1 CL Stiff grey clay, I I <br /> Fine grained, cohesive Clean I ! <br /> No apparent odor or I f <br /> 5 dis—coloration I I <br /> I I <br /> 6 Continued silty clay I I <br /> CL No apparent contamination Clean I I <br /> Medium plasticity I I <br /> 10 10 1 I <br /> EO I i <br /> I 1 <br /> I I <br /> ! I <br /> 15 ! I <br /> I I <br /> I I <br /> f i <br /> I f <br /> I I <br /> 20 I I <br /> I I <br /> I I <br /> I I <br /> I I <br /> 25 I I <br /> 1 I <br /> I I <br /> ! I <br /> ! I <br /> ! I <br /> 30 I I <br /> ! I <br /> ! I <br /> ! I <br /> E I <br /> 35 I <br /> ! I <br /> I 1 <br /> I ! <br /> I E <br /> 40 I f <br /> LJ <br />