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West &c Hansen Engineers, Inc . <br /> PO Box 5891, Vacaville CA 95696 <br /> Pro ect Stockton AASF Aircraft Wash ad Systems Job No. 6788-15 <br /> Location: Wash ad Date October 1Q, 91 <br /> Boring Designation. 2-1 Driller: West & Hansen Engineers, Inc <br /> Logged by BWW Base Vacaville <br /> Boring Location South Quadrant (See Figure 5) Drill E ui ment: 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 9, 1991 Finished Sept 13, 91 Completion Depth- 10 feet <br /> Number of Sarni les Three Depth to Groundwater Unknown <br /> Depth °7 '" <br /> p � � 5.a Lithology Observations Field Well <br /> (feet) Analysis Construction <br /> 9-9 <br /> 9-13 <br /> 0 1000.2— Concrete Washpad <br /> Basecourse <br /> 1 Dis—colored, petroleum odor <br /> CL I <br /> strata change at 3 feet Contarn 1 I <br /> 1 I <br /> 5 Silty clay, cohesive 1 1 <br /> Hardpan — Dense 1 1 <br /> 2I I <br /> SM Dry, sandy silt Clean <br /> Uncohesive I 4 <br /> 10 3 I I <br /> EO I 1 <br /> I I <br /> I I <br /> I I <br /> 15 I l <br /> I I <br /> ! 1 <br /> I 1 <br /> I I <br /> 20 I I <br /> I I <br /> I I <br /> I I <br /> I I <br /> I I <br /> 25 I { <br /> I I <br /> I I <br /> 1 1 <br /> I I <br /> 30 I I <br /> I I <br /> I I <br /> I I <br /> E I <br /> 35 I I <br /> 1 ! <br /> 1 1 <br /> I I <br /> I I <br /> I I <br /> 40 LJ <br />