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' Hole Number: Sheet 10 of 18 <br /> ' ERST & 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 /> 6 0 i-' <br /> Graphic Z 6.> E <br /> Soil Description Log 0 a4 Notes <br /> ' 90.0 to 90.8 ft. -Silty CLAY,slightly moist,stiff,no Borehole Area Air Measurements: <br /> plasticity,brown(10YR 4/3). Trace fine grained sand 14 0%LEL CH / 0 ppm VOC <br /> throughout. Mica and iron staining throughout. <br /> ' 18 91 .5115 28 <br /> ft.0 90.8 to 91.5 .-Clayey SILT,moist,loose,soft,dark <br /> yellowish brown(10YR 4/4). Fine grained sand,mica, 40 <br /> and iron staining throughout. <br /> 92.0 <br /> ' 93.0 <br /> 94.0 <br /> ' 95.0 <br /> 95.0 to 96.5 ft.-SAND,moist,loose,fine to coarse Borehole Area Air Measurements: <br /> grained,poorly sorted,subrounded,mica throughout, = 16 0%LEL CH 4 / 0 ppm VOC <br /> dark grayish brown(10YR 4/2). 1_5 <br /> 19' 1.5 19 96.0 <br /> 24 <br /> ' 97.0 <br /> ' 98.0 <br /> 99.0 <br /> ' 100.0 <br /> Drilling Contractor: Precision Sampling,Inc. <br /> Driller: Brian Johnson <br /> ' Helper: Mac,Steve,&Charlie CLAY SILT SAND GRAVEL <br /> Logged By: Leslie Keuss <br />