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West & Hansen Engineers , Inc. <br /> PO Box 5891, Vacaville CA 95696 <br /> Pro ect Stockton AASF Aircraft Wash ad System Job No. 6788-15 <br /> Location Clarifier I Date: October 10, 91 <br /> Boring Designation C-2 Driller: West & Hansen En sneers, Inc <br /> Logged by BWW Base Vacaville <br /> Boring Location North of First Chamber 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 1 5 = <br /> � � &� Lithology Observations Field e!! <br /> (feet) AE- yz Analysis Construction <br /> 9-13 <br /> 0 C-2- <br /> Dry silty loam I I <br /> 2 Petroleum odor, dis-coloration Contam I I <br /> MH Cohesive I I <br /> I I <br /> 5 I I <br /> Dry, medium grained i I <br /> Less Cohesive, no odor Clean I I <br /> MH Silty loam <br /> 10 Ip I <br /> I I <br /> EO I I <br /> I I <br /> I I <br /> I I <br /> 15 I <br /> I I <br /> f I <br /> I I <br /> I I <br /> 20 I I <br /> I I <br /> I I <br /> I I <br /> I I <br /> 25 I I <br /> I I <br /> I I <br /> I I <br /> i I <br /> I I <br /> 30 { I <br /> Ii <br /> I I <br /> I i <br /> I I <br /> 35 I I <br /> 1 I <br /> 1 I <br /> I I <br /> I I <br /> 40 I <br /> LJ <br />