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UNIFIED SOIL CLASSIFICATION Sti'STEM <br /> MAJOR DIVISIONS svnneo�s pESCRIPTIONS <br /> GRAPH LETTER <br /> e O e O e WELL•GRADED GRAVELS OR GRAVE��SAND <br /> CLEAN p � GW MIXTUl1E5, LITfLE OR NO FINES <br /> GRAVELS �•o' <br /> GRAVEL AND • ` • � • PoOfiLV GRADE�GRAVElS OR GRAVEL•SAND <br /> - GRAVELLY 'A 'M GP IAU(TURES, LITfLE OR NO FINES <br /> SOILS , � , � , S�IiV GRAVELS OR GHAVEL•SAND•SILi <br /> GRAVELS GM MI%TURES <br /> COARSE WITH FINES , • CIAVEV GPAVEIS OR GRqVEI•SAND•CLAy <br /> GRAINED GC MI%NRES <br /> SOILS <br /> WELL•GRADE�SANDS OR GRAVELLV SANDS, <br /> CLEAN SW UTfIE OR NO FINES <br /> SANDS <br /> POORIY•GRADED SANDS OR GRAVELLV SANOS, <br /> SAND AND SP LITfLE OR NO FINES <br /> SANDY SOILS <br /> ' SM S��ry"ANDS OS SAND�SIIT MIXIURES <br /> SANDS WITH : <br /> FINES <br /> SC CLA1'EY SANDS OR SAND�CLAY MIXNRES <br /> INORGAryiC SILTS ANO VERY FINE SANOS,ROCK <br /> ML FLOUR,SILN OR CLAVEV FINE SANDSOR <br /> CIAVEY SILTS WITM SLIGHT PLASTICITV <br /> SILTS AND CLAYS / INORGANIC CLAYS OF LOW TO MEDIUM <br /> CL PLASTICI7Y, GRAVELLV CLAyS, SANDY CLAVS, <br /> Liquid limit Ioss then 50 SILT'ClAVS,LEAN CLAVS <br /> FINE GRAINED =— ORGANIC SILTS AP:D OR6ANIC SILlY CLAYS OF <br /> SOILS — — OL iowe�nsricm <br /> INORGANIC SILTS,MICACEOUS OR <br /> MH DIATOMACEOUS FINE SAND OH SILTV SOILS <br /> SILTS AND CLAYS C,H INORGANIC CLAYS OF H�GM•P�ASTICIN <br /> Liquid limi[ preater than 50 <br /> %jj%j� ORGANIC CLAVS OF MEDIUM TO-MIGH <br /> %/�// OH PLASTICIN, ORGANIC SILTS <br /> ��%�� <br /> HIGHLY ORGANIC SOILS PT PEATOROTHERHIGHLVORGANICSOIlS <br /> TOPSOIL / FILL TOPSOIL OR FILL, MAy CONTAIN ABUNDANT <br /> ORGANIC MATERIAL <br /> LOG SYMBOL LEGEND <br /> � SPT�ample interva� � TS Torvane reedinp�TSFI . WELL SYMBOLS <br /> . Shelby tube sample intervel �/5 Vane readinp(TSF� <br /> ockinp hlonument <br /> B 1Aodiliad Caliloinia semple in(erval entonite Seal <br /> MC Moislwe contant <br /> � Cuttin0 sample <br /> LL lipuid Iimit <br /> ilica Sand <br /> � Corn P� %asticity inda■ <br /> ' Ylalarinvel <br /> latled Pipe <br /> GEOTECliNICAL AND <br /> ENVIRONMENTAL SEI2VICES KEY CHART <br />