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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> GROUP GRAPHI <br /> MAJOR DIVISION S YM ID3 0.L DESCRIPTION LOG <br /> CIIAVtiLLY 30IL9 CLEAN GRAVELLY WELL CItADrD GRAVELS <br /> GW OR GRAVEL - SAND MIXTURE3 <br /> SOILS POORLY CILADUD GRAVELS OIL _._.. <br /> OVER 60% OF LITTLE OIt. NO POORLY GRADED <br /> COARSE FI[ACTION FINES Gp CRAVEL -SAND SILT MLXTURES <br /> SIL'T'Y GRAVELS OR POORLY GRADED -� <br /> N LARCER THAN GRAVELLY SOILS GRAVEL - SAND SILT MIXTURES <br /> NO d SIEVE SIZE WITH FINES GM .'" <br /> upi e CLAYEY CRAVELS OR POORLY GRADED <br /> OVER 129'a FINES GC GRAVEL - SAND - CLAY MIXTURES !x" <br /> N� <br /> mg CLEAN SANDY WELL GRADED SANDS <br /> SANDY SOILS SOILS SW OR CRAVELLY SANDS - <br /> �+ '01 <br /> LITTLE OR NO POORLY cn-Aorto SANDU <br /> OVER a0% or SP OR CRhVFLLY l k_ND3 , — <br /> 0L cOARs1•. FRACTIoN SANDY SOILS - <br /> SMALLERTILAN SILTY SANDS OR POORLY GRADED <br /> o WITH FINES SM SAND - SILT MIXTURE3 <br /> v NO ( SIEVE SIZE <br /> CLAYEY 9ANI13 OR POORLY CRADI;D <br /> OVER 12% T=INES SC SAND - CLAY MixTUREs 160 <br /> +� INORGANIC SILTS, VERY FINE 5AN03 <br /> SILTY/CLAYEY FINE SANDS, CLAYEY <br /> ML SILTS WITH SLICHT PLASTICITY <br /> r- a SILTY AND CLAYEY SOILS CL INORi'1CI C CCRAVE O Y,TO MEDIUM <br /> LIQUID LIMIT LESS THAN 50 <br /> 0 a ORGANIC CLAYS OR ORGANIC SILTY ! ! 1 1 <br /> N OL CLAYS OF LOW PLASTICITY T li I <br /> W INORGANIC SILTS, MICACEOUS OR <br /> Y x MH SOIL8Q OrLLEL°STOVS IC S LTSFINE NDY Oft SILTY <br /> SILTYAND CLAYEY SOILS <br /> x INORGANIC CLAYS OF HIGH <br /> o CII PLASTICITY, OR FAT CLAYS <br /> LIQUID LIMIT GREATER THAN 50 <br /> c ORGANIC CLAYS OF MEDIUM TO HIGH <br /> OH PLASTICITY, OR ORGANIC SILTS _ <br /> PEAT OR OTHER HICHLY <br /> HIGHLY ORGANIC SOILS PI ORGASTIC SOIL =hJLd <br /> I <br /> SAMPLE TYPES SYMBOLS <br /> UNDISTU"ED SLEEVE WATER LEVEL <br /> QDISTURBED WATER INI=LOti <br /> UNSUCCESSFUL ATTEMPT <br /> ODOR OBSERVATION <br /> NO NONE 013SERVED MI] MODERATE ODOR <br /> SL SLIGHT ODO[I ST STRONG ODOR <br /> PHOTOVAC TIP READINGS <br /> IN PARTS PER MILLION (PPM) <br />