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1 <br /> Hole Number: Sheet 3 of 18 <br /> ' HERST & ASSOCIATES, INC.- AMW-30 Soil Log <br /> Northing: 2,148,062.1 Easting: 6,367,022.3 Ground Surface Elevation: 45.0 <br /> ' Project: Austin Road NCYCC Drilling Rig Type: Mud Rotary <br /> Project No.: 120091514 Method of Drilling: Boart-Longyear DB540 <br /> ' Site Location: Stockton,California Drilling Dates: January 18-22,2010 <br /> ' Soil Description Graphic c a Notes <br /> Log v� <br /> 20.0 to 20.6 ft. -SAND,moist,loose,medium grained, Borehole Area Air Measurements: <br /> subrounded,dark grayish brown(1 OYR 4/2). 19 0%LEL CH 4 / 0 ppm VOC <br /> 20.6 to 21.1 ft. -Clayey SAND,moist,loose,dark 41 5 16 <br /> 21.0 yellowish brown(10YR 3/4). <br /> Coarse pebbles at bottom of spoon and iron staining 18 <br /> throughout. <br /> ' 22.0 <br /> 23.0 <br /> 24.0 <br /> ' 25.0 <br /> 25.0 to 25.3 ft. -Same as 20.6 to 21.1 ft. Borehole Area Air Measurements: <br /> 25.3 to 26.3 ft.-Silty CLAY with trace sand,dry,stiff, 5 0%LEL CH / 0 ppm VOC <br /> low plasticity,yellowish brown(10YR 5/4). 11 3 <br /> 26.0 5 1.5 12 <br /> 15 <br /> ' 27.0 <br /> ' 28.0 <br /> 29.0 <br /> ' 30.0 <br /> Drilling Contractor: Precision Sampling,Inc. <br /> Driller: Brian Johnson <br /> Helper: Mac,Steve,&Charlie <br /> ' Logged By: Leslie Keuss CLAY SILT SAND GRAVEL <br />