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I <br /> Total depth of bo 20— 2 f <br /> P Mn,l. / t Diameter of borings 8 in Date drilled, 8/16/90 <br /> Casing dlameleti N/A Length. N/A Slot Sl=e. N/A <br /> Sarson diameter, N/A Length, N/A Material type. N/A <br /> Drilling Co{mpanyo Wayne Drilling Co R� Drl■eri Richard and Jay <br /> Method Useda Hollow—stern Auger Field Geologists G Altiman <br /> Signature of Registered Professlonak <br /> Registration Not 4313 StAtel Calif <br /> I <br /> DOW SAMPLE PAD, USCS DESCRIPTION WELL <br /> NO. CODE CONST. <br /> I <br /> 0 Asphalt and gravel base <br /> 2 <br /> 4 <br /> S-5 7 ppmv SM Silty sand, fine— to medium—grained, moderate brown, <br /> slightly damp, loose <br /> 6 <br /> B • <br /> 10 S-10 10 m <br /> PPy medium dense ••. <br /> � • <br /> 12 <br /> 34 <br /> 5-15 16 0 •' <br /> ppmv SW Sand, fine— to coarse—grained with trace fine— to - <br /> coarse—grained gravel, pale yellow, slightly damp, <br /> 16 medium dense •, <br /> 18 .• <br /> 20 S-20 190 MI_ Silt, pale yellow brown, slightly damp, very stiff, slight <br /> ppmv plasticity <br /> Total depth = 20-1/2 feet <br /> Ground water encountered at 20-1/2 feet <br /> Boring backfilled with bentonite/cement slurry <br />. LOQ OF BORINGi B-7 PLATE <br /> ARCO Service Station No. 6020 <br /> AppllQd cvosy�fQ.T,F 1711 Yosemite Avenue A8 <br /> PROJECT NO. 30056-1 Manteca, California <br />