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I <br /> Total depth of borino 20-1/2 ft Diameter of borings S in Date drilled, 8/16/90 <br /> Casing diameter,N/A Lengt1b N/A Slot sl2s; N/A <br /> Screen diameters N/A LengOu N/A Material types N/A <br /> Drilling CoMpanya Wayne Drilling Co Dollen Richard and Jay <br /> Method Used. Hollow—stern Auger Field De IOglsto G Altiman <br /> Signature of Registered Professionals <br /> i <br /> Registration Nom 4,313 St4e, Calif <br /> DEFTii SAMPLE P.I.D. USCS DESCRIPTION WELL <br /> i <br /> NO. CODE CONST. <br /> d Asphalt and gravel base <br /> 2 , <br /> 4 <br /> S-5 7 ppmv SM Sand, silt, fine— to medium—grained sand, moderate ' <br /> brown, slightly damp, loose , <br /> 6 <br /> 8 <br /> S-10 9 0 <br /> 10 - ppmv <br /> - 12 - <br /> S-15 <br /> 2S-15 10 0 <br /> ppmv SW Sand, fine— to coorse--grained with trace fine— to <br /> coarse—grained gravel, pale yellow brown, slightly damp, <br /> 16 medium dense <br /> 18 <br /> SMI Silt with some fine—grained sand, pale yellow brown <br /> 2D 5-20 17 0 • Clayey silt, pale yellow brown, wet, very stiff, slight <br /> ppmv MIL plasticity <br /> Total depth = 20-1/2 feet <br /> Ground water encountered at 19-1/2 feet <br /> Boring backfilled with bentonite/cement slurry <br />. LOLL OF BORINGi B-6 PLATE <br /> ARCO Service Station No. 6020 <br /> App/rod coosy�io,�-,� 1711 Yosemite Avenue A7 <br /> PROJECT NO. 30055-1 Manteca, California <br />