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U <br /> Total depth of boring. 21-1/2 ft Diameter of boring, S in Date drilled, 7/17/91 <br /> Casing diameter: N/A Length. N/A Slot size, N/A <br /> Screen diameter, N/A Length. N/A Material type: N/A <br /> Drilling Company, wane Drilling Co Driller, Rich and Jay <br /> Method Used, Hollow—stem Auger A Field Gqq4oglati R Alden <br /> Signature of Registered Professional: <br /> Registration No.. 4313 S tel Calif <br /> DEPTH AMPLE o P.I.D. RSCS DESCRIPTION <br /> NO. m CODE CONST. <br /> Asphalt gravel base <br /> 2 <br /> 4 <br /> 6 S-6 11 PP Dv SIL Silt with some clay, moderate yellowish brown, slightly <br /> damp, slight plasticity, stiff <br /> 14 �. <br /> S-11 26 pP0 v Very stiff - <br /> 12 ' <br /> 14 - <br /> 15 <br /> 4 16 S-16 is 0 moderate yellowish brown with white calcite veins <br /> pp v <br /> 18 <br /> - 20 - <br /> S-21 <br /> Q S-21 is Q <br /> ppmv <br /> Tota 1 depth = 21-1/2 feet <br /> Boring backfilled with cement/bentonite slurry <br /> LOG OF BORING: B-4 PLATE <br /> ARCO Service Station No. 2168 <br /> 447 West Charter Way 9 <br /> PROJECT NO. 31009-4W 1009D7A Stockton, California <br />