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t I <br /> UNIFIED SOIL CLASSIFICATION SYSTEM EXPLANATION <br /> MAJOR DIVISIONS LTR DESCRIPTION <br /> Soil Contact Noted within <br /> G W Well-graded gravels or gravel sand Sample Interval <br /> mixtures,little or no fines. <br /> GRAVEL I <br /> J G P Poorly-graded gravels or gravel sand - -- - Soil Contact Inferred between <br /> F, p & mixture,little or no fines. sample intervals <br /> GRAVELLY <br /> W <br /> SOIL G M Silty gravels,gravel-sand-silt mixtures. = Modified California(Porter)sample ,I <br /> Z <br /> � ¢ G C Clayey gravels,gravel- clay mixtures. • <br /> �. 0S W ® BAT Probe water sample <br /> Well-graded sands or gravelly sands, I <br /> cion SAND little or no fines. ; <br /> 4 g S P Poorly-graded sands or gravelly sands, I Shelby tube sample <br /> O little or no fines. <br /> U SANDY <br /> SOIL S M Silty sands,sand,and silt mixtures. Wate.level observed in boring <br /> S C Clayey sands,and clay mixtures. <br /> Inorganic silts and very fine sands,rock t Stabilized water level <br /> SILTS M L goer,sitry or clayey fine sands or clayey <br /> g silts with slight plasticity <br /> --t & Inorganic days of low to medium NFWE No free water encountered <br /> CLAYS C L plasficity gravelly days,sandy clays,silty <br /> days,lean days. <br /> 0 LL<50 - NOSC No odor,scent,or fluid cut <br /> M W -O L Organic silts and organic silt-clays of <br /> low-plasticity. <br /> is FID Flame Ionization Detector(total <br /> SILTS M H Inorganic silts,micaceous or diatom- ors arts organic vapors in <br /> W aceous fine or silty,soil,elastic silts g P P per million) <br /> T Z & <br /> . LLC H Inorganic days of high plasticity,fat clays. <br /> CLAYS PID Phooionization Device(btal organic <br /> LL>50 O Hvapors measured in parts per million) <br /> Organic clays of medium o high plasticity. <br /> HIGHLYORGANIC <br /> SOIL Pt Peat and other highly organic soil. <br /> I <br /> l WELL CONSTRUCTION <br /> SOIL CONTENT% Blank casing <br /> Trace 0-10% <br /> ® Screened casing I <br /> Little 10-20% <br /> Some <br /> 20-30% Cement grout <br /> Sandy <br /> 1 Bentonite <br /> Silty r 30-50% ' <br /> Clayey J Sand pack or gravel pack <br /> NOTES: Blow mums represent the number of blows of a 140-pound hammer falling 30 inches required to drive a sampler 6 inches. <br /> The lines separating strata on the logs represent approximate boundaries only. The actual transition may be gradual. No warranty is provided as <br /> to the continuity of soil strata between borings. Logs represent the soil section observed at the boring location on the date of drilling only <br /> ' References to plasticity of Cohesive soil are based on qualitative field observations and not on quantitative field or laboratory tests. Qualitative <br /> soil plasticity is noted solely to aid in stratigraphic Correlation and is not intended for geotechnical characterization of soils. <br /> BORING LOG LEGEND PLATE <br /> KLEINFELDER CANLIS BUILDING A-1 <br /> � <br /> SAN JOAQUIN COUNTY A-i I <br /> STOCKTON, CALIFORNIA <br /> PROJECT NO. 24-220191-A00 <br /> I <br />