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Hole Number: Sheet 7 of 18 <br /> HERST & ASSOCIATES, INC.- AMW-21 Soil Log <br /> • Northing: 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 /> o ac 's~' <br /> Graphic Z F- <br /> Q Soil Description 0 Notes <br /> Lo <br /> g <br /> w o <br /> r-z�. <br /> 45 <br /> 60.0 to 61.3 ft.-Silty CLAY with organic inclusions, Borehole Area Air Measurements: <br /> medium dry,very stiff,moderate yellowish brown 10 0%LEL CH4 / 0 ppm VOC <br /> (IOYR 5/4). 1_3 18 <br /> 61.0 1.5 17 <br /> 26 <br /> 61.3 to 65.0 ft.-Silty SAND. <br /> 62.0 <br /> 13 <br /> 63.0 <br /> • <br /> 64.0 <br /> 65.0 Suspend Drilling @ 1642 on 11/4/2008 <br /> 65.0 to 66.2 ft.-Silty SAND with dark organic lenses, Resume Drilling @ 0901 on 11/5/2008 <br /> moist,medium stiff,fine grained. Silty sand is 8 <br /> moderate brown(5YR 4/4)and organic material is1_2 12 <br /> 66.0 dusky yellowish brown(IOYR 2/2). 1.5 13 <br /> 13 <br /> 66.2 to 70.0 ft.-Silty SAND. <br /> 67.0 <br /> 14 <br /> 68.0 <br /> 69.0 <br /> 70.0 V Terminate Drilling @ 1608 on 12/3/2008 <br /> Drilling Contractor: Precision Sampling,Inc. <br /> Driller: Paul Draeger F7A FU EJ <br /> Helper: Tony Young,Robert Kline,&Diego Amador CLAY SILT SAND GRAVEL <br /> Logged By: David Vasbinder <br />