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' Hole Number: Sheet 16 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> E~ <br /> Soil DescriptionLog 0 �Notes <br /> ' Borehole Area Air Measurements: <br /> 13 0%LEL CH4 / 0 ppm VOC <br /> 151.0 151.1 to 151.3 ft.-Silty SAND,moist,loose,very 30 1.5 17 <br /> fine to fine grained,poorly sorted,subangular,dark 17 <br /> grayish brown(10YR 4/2). 77777777 <br /> 151.3 to 151.4 ft. -Sandy/Silty CLAY,moist,very <br /> soft,highly plastic,rock flour to fine grained sand, <br /> 152.0 dark yellowish brown(IOYR 3/4). <br /> ' 153.0 <br /> 154.0 <br /> 155.0 <br /> 155.0 to 155.42 ft. -GRAVEL&SAND,slightly moist, � .` : 0.42 38 <br /> poorly sorted,subrounded,dark gray brown(IOYR 4/2). 31 0.42 50 Borehole Area Air Measurements: <br /> Bottom of spoon in sand trap was dry. Loose 0%LEL CH / 0 ppm VOC <br /> ' gravel at top of spoon. <br /> 156.0 <br /> ' 157.0 <br /> ' 158.0 <br /> 159.0 <br /> ' 160.0 <br /> Drilling Contractor: Precision Sampling,Inc. <br /> Driller: Brian Johnson F <br /> Helper: Mac,Steve,&Charlie <br /> CLAY SILT SAND GRAVEL <br /> Logged By: Leslie Keuss <br />