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' Hole Number: Sheet 8 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 a> E-� <br /> ' Soil Description Log 0 A4 Notes <br /> � rn rx <br /> 70.0 to 71.5 ft.-SILT with trace sand,damp, Cease drilling at 1750 on 1/28/2010. <br /> medium stiff,medium dense,brittle,yellowish 14 Resume drilling at 0820 on 1/29/2010. <br /> brown(IOYR 5/8). <br /> 1.5 <br /> 71.0 l4 1.5 20 Borehole Area Air Measurements: <br /> 24 0%LEL CH / 0 ppm VOC <br /> ' 72.0 <br /> ' 73.0 <br /> 74.0 <br /> ' 75.0 <br /> 75.0 to 76.5 ft.-SILT,damp,slightly plastic,very Borehole Area Air Measurements: <br /> stiff,yellowish brown(IOYR 5/6). Contains 2% 21 0%LEL CH4 / 0 ppm VOC <br /> coarse,angular sand. _ <br /> ' 15 1.5 29 <br /> 76.0 <br /> 34 <br /> ' 77.0 <br /> 78.0 <br /> 79.0 <br /> ' 80.0 <br /> Drilling Contractor: Precision Sampling,Inc. <br /> Driller: Brian Johnson <br /> Helper: James McIntyre&Steve Moore CLAY SILT SAND GRAVEL <br /> ' Logged By: Rachael Haynes <br />