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Total depth of boringe 45 ft. Diameter of borings .10 in. Data drilled, 10/17/91 <br /> Casing diameter: 4 in. Length, 64 ft. Slot sizes 0.050 in. . <br /> Screen diameter, 4 in. Length, 20 [t. Material types PVC <br /> Drilling Companrs Westex Drillers Chris & Mork <br /> Method Usedi Wallow—stem Auger Field Geologists Claudio <br /> Signalure of Registered Professionals <br /> Registration Noa 4313 State] Calif. <br /> SAMPLE USCS wmi- <br /> DEPTN NO. P'LD• <br /> CODE E DESCRIPTION CONST. <br /> Q Asphalt. <br /> 2 <br /> 4 <br /> 1 Silt trace day, light brown to light olive preen, slightly damp, <br /> S- 5 fl-3 ppmv ML slight plasticity, hara. <br /> 6 <br /> 5-10 55 0 SM 'Sandy silt, fine—grained sand, reddish brown to tight olive <br /> 10 pprnV green, slightly damp, hard. <br /> 12 ' <br /> 14 <br /> S-15 50 0 ML Silt some sand, fine--grained sand, reddish brown to light <br /> ppmv olive green, s4ightly damp, hard. <br /> 16 <br /> 0 Sandy silt, fine—grained sand, moderate brown, slightly <br /> ZQ 5-20 25 ppmv SM damp, very stiff. <br /> (section continues downward) <br /> I <br /> ".tl►/An LOG OF BORING: B-10/VW-1 PLATE <br /> ARCO Service Station No. 548 <br /> 1612 Hammer Lane 16. <br /> PROJECT NO. 30D04 4 �"�N0' Stockton, Callfornia <br /> PR 00009A <br /> 'l <br /> i <br /> ."i <br />