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Hole Number: Sheet 2 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 /> ' Soil Description Graphic o a Notes <br /> Log v� <br /> ' 10.0 to 10.5 ft.-CLAY,wet,soft,highly plastic, <br /> grayish brown(2.5YR 5/2). Borehole Area Air Measurements: <br /> 4 0%LEL CH4 / 0 ppm VOC <br /> ' 10.5 to 11.5 ft.-SILT,wet to damp,medium stiff, 2 L5- 4 <br /> 11.0 moderately plastic,grayish brown(2.5YR 5/2). 1.5 <br /> 11 <br /> ' 12.0 <br /> 13.0 <br /> 14.0 <br /> t 15.0 <br /> 15.0 to 15.3 ft.-CLAY,wet,very soft,highly plastic, <br /> very dark grayish brown(2.5YR 3/2). Borehole Area Air Measurements: <br /> 4 0%LEL CH / 0 ppm VOC <br /> 15.3 to 16.5 ft.-SILT,dry,stiff,slightly plastic, 3 1_5 11 <br /> ' 16.0 yellowish brown(lOYR 5/6). 1.5 <br /> 15 <br /> ' 17.0 <br /> 18.0 <br /> 19.0 <br /> ' 20.0 <br /> Drilling Contractor: Precision Sampling,Inc. <br /> Driller: Brian Johnson F/7/1 FU <br /> Helper: James McIntyre&Steve Moore CLAY SILT SAND GRAVEL <br /> ' Logged By: Rachael Haynes <br />