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Hole Number: Sheet 13 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 /> � ? <br /> 1 Graphic z a> E-• <br /> b Soil Description Lo o 0. Notes <br /> Qwo g <br /> Q�oA <br /> 120.0 to 121.3 ft. -SAND,wet,coarse sand grading 14 Suspend Drilling @ 1551 on 11/6/2008. <br /> down to medium subrounded gravel,multi-colored. <br /> 1.5 28 It is decided on 11/7/2008 to abandon <br /> 121.0 1.5 30 current borehole(collapsed)and move <br /> 39 east 15 feet. New borehole will be <br /> blind drilled to 125 feet. <br /> 121.3 to 121.5 ft. -Clayey SILT,dry,hard,rust <br /> staining,moderate yellowish brown(10YR 5/4). <br /> 122.0 <br /> 121.5 to 125.0 ft.-SILT. <br /> 25 <br /> 123.0 <br /> 124.0 <br /> 125.0 <br /> 125.0 to 126.1 ft. -SILT with abundant mica,slightly 23 Resume Drilling @ 1300 on 11/10/2008. <br /> moist,medium stiff,moderate yellowish brown(10YR <br /> 5/4). 1.1 33 Borehole drilled to 125 feet after <br /> 126.0 1.5 50 moving well location 15 feet to east <br /> 69 after first borehole collapsed. <br /> Borehole Area Air Measurements: <br /> 127.0 0%LEL CH q / 0 ppm VOC <br /> 26 <br /> 128.0 <br /> 129.0 <br /> 130.0 <br /> Drilling Contractor: Precision Sampling,Inc. <br /> Driller: Paul Draeger <br /> Helper: Tony Young,Robert Kline,&Diego Amador CLAY SILT SAND GRAVEL <br /> Logged By: David Vasbinder <br />