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Hole Number: Sheet 4 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 = g o a Notes <br /> Log v� <br /> ' 30.0 to 31.5 ft.-Sandy SILT,dry,hard,slightly plastic, Borehole Area Air Measurements: <br /> dark yellowish brown(10YR 4/6). Sand is subangular, 25 0%LEL CH / 0 ppm VOC <br /> medium grained,with trace mica. 1_5 <br /> ' 31.0 6 1.5 45 <br /> 50 <br /> ' 32.0 <br /> 33.0 <br /> 34.0 <br /> ' 35.0 <br /> 35.0 to 36.5 ft.-SILT,slightly damp,medium stiff, Borehole Area Air Measurements: <br /> grayish brown(1 OYR 5/2). Contains abundant mica 8 0%LEL CH / 0 ppm VOC <br /> with strong brown(7.5YR 5/8)iron staining. 7 8 <br /> ' 36.0 1.5 <br /> 11 <br /> ' 37.0 <br /> ' 38.0 <br /> 39.0 <br /> ' 40.0 <br /> Drilling Contractor: Precision Sampling,Inc. <br /> Driller: Brian Johnson LEA <br /> ' Helper: James McIntyre&Steve Moore CLAY SILT SAND. GRAVEL <br /> Logged By: Rachael Haynes <br />