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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> GROUP GRAP14IC <br /> MAJOR DIVISION SYMBOL DESCRIPTION LOGS <br /> or WELL GRADED GRAVELS <br /> GRAVELLY 90iLs CLEAN GRAVELLY <br /> GW OR GRAVEL - SAND MIXTURES <br /> SOILS POORLY GRADED GRAVELS Olt .� <br /> a (ER 60% OF LITTLE OR NO POORLY GRADED 1` <br /> (n GIa GRAVEL -SAND SILT MIXTURES <br /> COARSE FRACTION FINEss <br /> SILTY GRAVELS OR POORLY GRADED <br /> r LARGER THAN GRAVELLY SOILS GRAVEL - SAND SILT MIXTURES I� rK <br /> °l GM <br /> '" NO 4 SIEVE SIZE WITH FINES i <br /> Q 3 m CLAYEY GRAVELS OR POORLY GRADED <br /> ,r <br /> fu OVER 12% FINES GC GRAVEL - SAND - CLAY MIXTURES <br /> m 2 CLEAN SANDY WELL GRADED SANDS k <br /> in r SANDY SOILS SW OR GRAVELLY SANDS <br /> SOILS <br /> POORLY GRADED SANDS <br /> D h LITTLE OR NO OR GRAVELLY SANDS <br /> p L OVER 60% OFFiblEs SP <br /> M COARSE FRACTION SANDY SOILS 1 <br /> L SILTY SANDS OR POORLY GRADED <br /> SMALLER THAN WITH FINES SM SAND - SILT MIXTURES <br /> L) <br /> NO 4 SIEVE SIZE CLAYEY SANDS OR POORLY GRADED ' <br /> OVER 12% FINES SC SAND - CLAY MIXTURES <br /> INORGANIC SILTS, VERY FINE SANDS <br /> N SILTY/CLAYEY FINE SANDS, CLAYEY t 'i <br /> ML SILTS WITH SLIGHT PLASTICITY <br /> SILTY AND CLAYEY SOILS INORGANIC CLAYS-LOW TO MEDIUM <br /> o PLASTICITY, GRAVELLY,SANDY, <br /> LIQUID LIMIT LESS THAN 50 CL <br /> 30 ORGANIC CLAYS Olt ORGANIC SILTY <br /> m <br /> as N OL CLAYS OF LOW PLASTICITY I 1 r <br /> INORGANIC SILTS, MICACEOUS OR <br /> a w MH SOILS OR ELASTIC SIDIATOMACEOUS LTSNDY OR SILTY , <br /> L ° SILTY AND CLAYEY SOILS INORGANIC CLAYS OF IIIGII <br /> O >r CH PLASTICITY,OR FAT CLAYS r� <br /> L LIQUID LIMIT GREATER THAN 50 l= <br /> [ ORGANIC CLAYS OF MEDIUM TO HIGH <br /> OH PLASTICITY, OR ORGANIC SILTS <br /> PEAT OR OTHER HIGHLY <br /> HIGHLY ORGANIC SOILS Pt ORGANIC SOIL <br /> p 1 <br /> MPLE TYPES SYMBOLS I i <br /> UNDISTURBED SLEEVE WATER LEVEL <br /> DISTURBED WATER INFLOW <br /> F UNSUCCESSFUL ATTEMPT <br /> ODOR OBSERVATION <br /> NO NONE OBSERVED MD MODERATE ODOR r 1 <br /> SL SLIGHT ODOR ST STRONG ODOR I <br /> PHOTOVAC TIP READINGS <br /> IN PARTS PER MILLION (PPM) <br /> F <br /> LEND TO LOGS <br /> PLATE A-Z r <br />