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6. <br /> UNIFIED SOIL CLASSIFICATION SYSTEM <br /> r <br /> MAJOR DIVISIONSUSCS TYPICAL <br /> SYMBOL DESCRIPTIONS <br /> GW WELL-GRADED GRAVELS,GRAVEL-SAND <br /> CLEAN GRAVELS : MIXTURES WITH LITTLE OR NO FINES <br /> GRAVELS WITH LITTLE <br /> ` OR NO FINES <br /> (More than half of GP MIXTURES WITHLITTLEVELSOR NOFINES VEL-SAND <br /> coarse fraction O <br /> is larger than <br /> ` the#4 sieve) IS <br /> SILTY GRAVELS,GRAVEL-SILT-SAND <br /> GRAVELS MIXTURES <br /> COARSE WITH OVER <br /> GRAINED 12% FINES GC CLAYEY GRAVELS,GRAVEL-SAND-CLAY <br /> SOILS MIXTURES <br /> L (More than halfSW WELL-GRADED SANDS, OR NO NES <br /> of material SANDS CLEAN SANDS MIXTURES WITH LITTLE OR NO FINES <br /> is larger than WITH LITTLE <br /> the#200 sieve) (More than half of OR NO FINES <br /> coarse fraction SP POORLY-GRADED SANDS,SAND-GRAVEL <br /> 6 is smaller than MIXTURES WITH LITTLE OR NO FINES <br /> the#4 sieve) <br /> SM SILTY SANDS,SAND-GRAVEL-SILT MIXTURES <br /> L SANDS WITH <br /> OVER 12% FINES <br /> SC CLAYEY SANDS,SAND-GRAVEL-CLAY MIXTURES <br /> t. <br /> INORGANIC SILTS&VERY FINE SANDS, <br /> ML SILTY OR CLAYEY FINE SANDS, <br /> CLAYEY SILTS WITH SLIGHT PLASTICITY <br /> V <br /> SILTS AND CLAYSINORGANIC CLAYS OF LOW TO MEDIUM <br /> CL <br /> PLASTICITY,GRAVELLY CLAYS,SANDY CLAYS, <br /> (Liquid limit less than 50) SILTY CLAYS,LEAN CLAYS <br /> FINE <br /> GRAINED _ ORGANIC SILTS&ORGANIC SILTY CLAYS <br /> SOILS OL OF LOW PLASTICITY <br /> INORGANIC SILTS,MICACEOUS <br /> (More than half MH <br /> of material DIATOMACEOUS FINE SAND OR SI SILT <br /> is smaller than <br /> the#200 sieve) SILTS AND CLAYS <br /> CH INORGANIC CLAYS OF HIGH PLASTICITY, <br /> (Liquid limit greater than 50) FAT CLAYS <br /> L OH ORGANIC CLAYS&ORGANIC SILTS <br /> OF MEDIUM-TO-HIGH PLASTICITY <br /> HIGHLY ORGANIC SOILS PT PEAT,HUMUS,SWAMP SOILS WITH HIGH <br /> ORGANIC CONTENT <br /> iL " UNIFIED SOIL CLASSIFICATION SYSTEM ]75 <br /> PILOT TRAVEL CENTER <br /> h K L E I N F E L D E R 10998 S. HARLAN ROAD <br /> 6 STOCKTON, CALIFORNIA <br /> Drafted By: G.GOMFZ Project No.: 82946.G01 <br /> Date: 5/16/2007 File Number: ST07GO84 <br /> C,,Jgl gev,Mder,IM,zool <br />