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1 <br /> Hole Number: Sheet 4 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 /> Graphic Z a .> F� <br /> Soil Description Log Notes <br /> ' 30.0 to 31.5 ft.-Sandy CLAY with fine grained sand Borehole Area Air Measurements: <br /> throughout,moist,soft,low plasticity,dark yellowish 26 0%LEL CH 4 / 0 ppm VOC <br /> brown(IOYR 3/6). <br /> ' <br /> 643 <br /> 31.0 1.5.5 <br /> 30 <br /> ' 32.0 <br /> 33.0 <br /> 34.0 <br /> ' 35.0 <br /> 35.0 to 36.3 ft.-Silty CLAY,slightly moist,medium Borehole Area Air Measurements: <br /> stiff,plastic,reddish brown(5YR 4/3). 10 0%LEL CH4 / 0 ppm VOC <br /> ' 7 11 3 25 <br /> 36.0 1.5 <br /> 32 <br /> t 37.0 <br /> ' 38.0 <br /> 39.0 <br /> ' 40.0 <br /> Drilling Contractor: Precision Sampling,Inc. <br /> Driller: Brian Johnson <br /> Helper: Mac, Steve,8,,Charlie CLAY SILT SAND GRAVEL . <br /> ' Logged By: Leslie Keuss <br />