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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> li <br /> USCS TYPICAL <br /> MAJOR DIVISIONS SYMBOL DESCRIPTIONS j <br /> 'L GW WELL-GRADED GRAVELS,GRAVEL-SAND <br /> CLEAN GRAVELS : MIXTURES WITH LITTLE OR NO FINES <br /> + [GRAVELS WITH LITTLE <br /> I OR NO FINES 077- <br /> °Q POORLY-GRADED GRAVELS,GRAVEL-SAND <br /> 3 (More than half of o GP MIXTURES WITH LITTLE OR NO FINES <br /> L fraction Q <br /> is larger than <br /> f the#4 sieve) ° <br /> GM SILTY GRAVELS,GRAVEL-SILT-SAND <br /> GRAVELS MIXTURES <br /> COARSE WITH OVER <br /> GRAINED 12% FINES CLAYEY GRAVELS,GRAVEL-SAND-CLAY <br /> SOILS GC MIXTURES <br /> fl <br /> (More than half I SW WELL-GRADED SANDS,SAND-GRAVEL <br /> of material SANDS CLEAN SANDS MIXTURES WITH LITTLE OR NO FINES <br /> is larger than WITH LITTLE <br /> the#200 sieve) <br /> (PVOre than half of OR NO FINES <br /> coarse fraction SP POORLY-GRADED SANDS,SAND-GRAVEL <br /> is smaller than MIXTURES WITH LITTLE OR NO FINES <br /> !the#4 sieve) <br /> S M SILTY SANDS,SAND-GRAVEL-SILT MIXTURES <br /> SANDS WITH <br /> AVER 12% FINE$ - <br /> t l SC CLAYEY SANDS,SAND-GRAVEL-CLAY MIXTURES <br /> I � � <br /> �h <br /> INORGANIC SILTS&VERY FINE SANDS, <br /> ML SILTY OR CLAYEY FINE SANDS, <br /> s CLAYEY SILTS WITH SLIGHT PLASTICITY <br /> SILTS AND CLAYS..,. CL INORGANIC CLAYS OF LOW TO MEDIUM <br /> PLASTICITY,GRAVELLY CLAYS,SANDY CLAYS, <br /> FINE (Liquid limit less than 50i — SILTY CLAYS,LEAN CLAYS <br /> j <br /> GRAINED <br /> ORGANIC SILTS&ORGANIC SILTY CLAYS <br /> SOILS <br /> _ OL OF LOW PLASTICITY <br /> tl , <br /> (More than half I INORGANIC SILTS,MICACEOUS OR <br /> of material i MH DIATOMACEOUS FINE SAND OR SILT <br /> is smaller than <br /> the#200 sieve) SILTS AND CLAYS <br /> j t INORGANIC CLAYS OF HIGH PLASTICITY, <br /> CH <br /> f (Liquid limit greater than 50) FAT CLAYS <br /> OF I ORGANIC CLAYS&ORGANIC SILTS <br /> OF MEDIUM-TO-HIGH PLASTICITY <br /> I <br /> PEAT,HUMUS,SWAMP SOILS WITH HIGH <br /> HIGHLY ORGANIC SOILS <br /> i PT ORGANIC CONTENT i <br /> N i _ <br /> 16 <br /> Q <br /> UNIFIED SOIL.CLASSIFICATION SYSTEM PLATE <br /> K L E I N 1= E L D E R 18694 EAST HIGHWAY 88 <br /> NK4 l CLEMENT$, CALIFORNIA <br /> N 1, 4 <br /> U3 Drafted By: G.GOMEZ I?roject No.: 55208.G01 <br /> Y Date: 6/2/2005 File Number: ST05GO98 <br /> CopyNht Kleinreltler,Inc.2005 <br /> L ' <br />