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Hole Number: Sheet 3 of 18 <br /> ' HERST & ASSOCIATES, INC.- AMW-29 Soil Log <br /> Northing: 2,147,760.7 Easting: 6,365,707.4 Ground Surface Elevation: 43.2 <br /> ' Project: Austin Road NCYCC Drilling Rig Type: Mud Rotary <br /> Project No.: 120091514 Method of Drilling: DB540 <br /> ' Site Location: Stockton,California Drilling Dates: January 27-February 1,2010 <br /> ' Graphic z 6. >F <br /> Soil Description Log 0 � Notes <br /> `n c0 <br /> ' 20.0 to 21.5 ft. -SILT,dry,stiff,slightly plastic, Borehole Area Air Measurements: <br /> yellowish brown(10YR 5/6). 7 0%LEL CH / 0 ppm VOC <br /> ' 4 10 <br /> 21.0 1.5 <br /> 16 <br /> ' 22.0 <br /> 1 <br /> 23.0 <br /> 24.0 <br /> ' 25.0 <br /> 25.0 to 25.5 ft. -SAND,wet,loose,medium grained, Borehole Area Air Measurements: <br /> subangular,dark yellowish brown(IOYR 4/6). 4 re LEL CH4 / 0 ppm VOC <br /> 25.5 to 26.5 ft. -SILT,dry,stiff,slightly plastic, 5 6 <br /> ' 26.0 yellowish brown(IOYR 5/6). Trace caliche veins,very 1.5 <br /> pale brown(IOYR 7/4). 13 <br /> ' 27.0 <br /> ' 28.0 <br /> 29.0 <br /> ' 30.0 <br /> Drilling Contractor: Precision Sampling,Inc. <br /> Driller: Brian Johnson 7A FU <br /> Helper: James McIntyre&Steve Moore CLAY SILT SAND GRAVEL <br /> tLogged By: Rachael Haynes <br />