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UNIFIED SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS LTR DESCRIPTION MAJOR DIVISIONS LTR DESCRIPTION G w Wall-graded gravels w gravel sand mixtures little Inorganic silts and very fine sands rock Ibu4 GRAVEL or no tines SILTS M L story or clayey fine sands or clayey alts with In I slight plasticityAND O P Poorly-graded gravels or gravel sand mbnure little or no lines AND Inorganic clays of bw to medium plastict% GRAVELLY CLAYS C L gravely days sandy days airy days lean G M Silty gravels gravel-sand-alkmre ixtus SOILS LL<fie COARSE FNE 0 L Organic sits and organic sit-clays d bw G C Clam gravels.gravel-sand-day mixtures plasticitK GRAINED GRAINED SOILS SAND S W Weri-graded sands or gravely sands.tittle or no SOILS SILTS M H Inorganic slits.tdcaosous or diatomaceous 1' finesfine or arty soils elastic alta. AND S P Poorly-graded sands or gravely sands little or no AND C H SANDY tinea. CLAYS Inorganic days of high plastick%fall clays ' SOILS S M Silty sands.sand and sit mixtures LL r 50 0 H Organic days of medium to high plastldttt S C Clayey sands,and day nixtums HIGHLY ORGANIC SOILS P t Peat and other highly organic sols. --— —� General vicinity of sal contact Blank casing a Soil contact noted during drilling ' � Screened casing Standard penetration split spoon sample Cement grout Modified California(Porter)sample Bentonite IShelby tube sample Sand pack or gravel pack Water level observed In boring Z —_ Stabilized water level Percent Soil Content I ' NFWE No free water encountered Trace 0- 10% Little 10-20% NOSC No odor,scent or fluid cut Some 20-30% Sandy OVA Organic Vapor Analyzer Silty 30-50% Clayey tPID Total organic vapors(parts per million)measured by a photolonlzabon device 1� NOTES Blow counts represent the number of blows of a 140-pound hammer falling 30 inches required to drive a sampler through the last 12 inches of an 18 inch penetration The lines separating strata on the logs represent approximate boundaries only The actual transition may be gradual No warranty is provided as to the continuity of soil strata between borings Logs represent the sal section observed at the boring location on the date of dnlling only Relerences to plasticity of cohesive soils are based on qualitative field observations and not on quantitative field or laboratory tests qualitative sod plasticity is noted solely to aid in stratigraphic correlabon and is not Intended for geotechnical characterization of soils BORING LOG LEGEND PLATE K L E 1 N FELDER SAN JOAQUIN GENERAL HOSPITAL B- 1 FRENCH CAMP, CALIFORNIA PROJECT NO 24-220152-A00