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Hole Number: Sheet 16 of 18 <br /> HERST & ASSOCIATES, INC.- AMW-21 Soil Log <br /> iNorthing: 2,146,441.0 Easting: 6,359,731.4 Ground Surface Elevation: 34.9 <br /> Project: Austin Road NCYCC Drilling Rig Type: Mud Rotary <br /> Project No.: 120081503 Method of Drilling: DB 540 with Mud Puppy <br /> Site Location: Stockton,California Drilling Dates: November 4- 12,2008 <br /> Up N <br /> �a Graphic Z a> H <br /> Q Soil Description Lo Notes <br /> g � � <br /> Q� <br /> 150.0 to 150.6 ft. -CLAY,dry,very stiff,rust staining, <br /> moderate yellowish brown(10YR 5/4). 18 <br /> 1.5 19 <br /> 151.0 150.6 to 151.5 ft. -Silty CLAY with barite lenses,dry, 1.5 36 <br /> very stiff,moderate brown(5YR 4/4). 45 <br /> 151.5 to 155.0 ft. -Silty CLAY. <br /> 152.0 <br /> 31 <br /> 153.0 <br /> 154.0 <br /> 155.0 <br /> 155.0 to 155.2 ft.-GRAVEL,dry,fine to coarse <br /> grained,angular,mudstone. Blow counts canceled after the first 4 <br /> inches required over 75 blows. <br /> 155.2 to 160.0 ft.-CLAY. 0=2 >75 <br /> 156.0 1.5 Borehole Area Air Measurements: <br /> 0%LEL CH <br /> 4 / 0 ppm VOC <br /> 157.0 <br /> 32 <br /> 158.0 <br /> 159.0 <br /> . 160.0 <br /> Drilling Contractor: Precision Sampling,Inc. <br /> Driller: Paul Draeger 7A FU <br /> Helper: Tony Young,Robert Kline,&Diego Amador CLAY SILT SAND GRAVEL <br /> Logged By: David Vasbinder <br />