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1 <br /> Ile UNIFIED SOIL CLASSIFICATION SYSTEM <br /> USCS TYPICAL <br />' MAJOR DIVISIONS 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 o Q POORLY-GRADED GRAVELS GRAVEL-SAND <br /> (More than half of o GP MIXTURES WITH LITTLE OR NO FINES <br />' coarse fraction O <br /> is larger than <br /> the#4 sieve) GM 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 />' (More than halfSW WELL-GRADED SANDS SAND-GRAVEL <br /> of materia! CLEAN SANDS of WITH LITTLE OR NO FINES <br /> is larger than SANDS WITH LITTLE <br /> the#200 sieve) (More than half of OR NO FINES Sp <br /> POORLY-GRADED SANDS,SAND-GRAVEL coarse fraction MIXTURES WITH LITTLE OR NO FINES <br /> is smaller than <br /> the#4 sieve) <br />' SM SILTY SANDS SAND-GRAVEL-SILT MIXTURES <br /> SANDS wlT» <br /> OVER 12% FINES <br /> SC CLAYEY SANDS SAND-GRAVEL-CLAY MIXTURES <br /> INORGANIC SILTS&VERY FINE SANDS <br />' <br /> ML SILTY OR CLAYEY FINE SANDS <br /> CLAYEY SILTS WITH SLIGHT PLASTICITY <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 /> 1 <br /> (More than half M 1"I INORGANIC SILTS MICACEOUS OR <br /> of material DIATOMACEOUS FINE SAND OR SILT <br />' is smaller than <br /> the#200 sieve) SILTS AND CLAYS <br /> CH FAT <br /> CLAYS OF HIGH PLASTICITY, <br /> (Liquid limit greater than 50) FAT CLAYS <br />' OH ORGANIC CLAYS&ORGANIC SILTS <br /> OF MEDIUM-TO-HIGH PLASTICITY <br />' LOAMS UNDER USDA SOIL CLASSIFICATION SYSTEM <br /> SOIL OF APPROXIMATELY EQUAL SAND/SILT/CLAY <br /> 10 g UNIFIED SOIL CLASSIFICATION SYSTEM PLATE <br /> K L E I N F E L D E R <br />' THE LEARNER COMPANY C_ <br /> " 2711 NAVY DRIVE 1 <br /> Drafted By D Ross <br /> :u wDrafted No 20-232205/EO1 STOCKTON, CALIFORNIA <br /> Date 1/12/2001 Fde Number 20232205 <br />' coarNht KWiM6kW b, 2000 <br />