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Total depth of borings 40 ft. Diameter of boring, 6 in. Date drilled@ 10/21/91 <br /> Casing diameten N/A _ Len9ft N/A _ Slot SIZee N/A <br /> Screen diameter, N/A Length: N/A Material types N/A <br /> Drilling Company, westex Driffer,'Chris & Tim <br /> Method Used@ Hollow—stem Auger A Field Geologist, Claudio <br /> t <br /> Signature of Registered Professionals <br /> Registration Noe 4313 S Y'a, Calif. <br />• <br /> DEPTH SAMPLE o WELLP •I.D. USCS DESCRIPTION � <br /> NO. m CODE CONST. <br /> 0 Asphalt. <br /> 2 <br /> 4 <br /> 0 Sandy silt, fine—grained sand, light brown, slightly damp, <br /> $-5 21 ppmv SM very stiff. - <br /> 6 <br /> 8 . . • . <br /> 10 S-10 41 P 0 ML Silt some clay, light brown, slightly damp, very stiff. + <br />• - 12 - <br /> - 14 - <br /> S-15 <br /> 1214 S-15 55 0 SM Silty sand, fine— to coarse—grained sand, light brown, •• <br /> pPrnv slightly damp, very dense. <br /> 15 <br /> 18 <br /> 0 Silt trace clay and fine—grained sand, light brown, <br />. 20 5-2D 38 ppmv ML slightly damp, hard. <br /> (section continues downward) <br />� . A/Am LOG OF BORING: B-12 PLATE <br /> r <br /> =�—t��■� <br /> ARCO Service Station No. 548 <br /> 7612 Hammer Lane 20 <br /> PROJECT NO. 30004-4 "`E"a' Stockton, California <br /> 0004D11A <br />