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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISIONS USCS TYPICAL <br /> SYMBOL DESCRIPTIONS <br /> GW WELL-GRADED GRAVELS, GRAVEL-SAND <br /> CLEAN GRAVELS MIXTURES WITH LITTLE OR NO FINES <br /> WITH LITTLE - — <br /> GRAVELS OR NO FINES GP POORLY-GRADED GRAVELS,GRAVEL-SAND <br /> (More than half of MIXTURES WITH LITTLE OR NO FINES <br /> coarse fraction <br /> is larger than GM SILTY GRAVELS, GRAVEL-SILT-SAND <br /> the #4 sieve) GRAVELS MIXTURES <br /> COARSE WITH OVER <br /> GRAINED 12% FINES GC CLAYEY GRAVELS,GRAVEL-SAND-CLAY <br /> SOILS MIXTURES <br /> (More than half - WELL-GRADED SANDS, SAND-GRAVEL <br /> of material =-= SW <br /> CLEAN SANDS ___= MIXTURES WITH LITTLE OR NO FINES <br /> is larger than <br /> the #200 sieve) WITH LITTLE <br /> SANDS OR NO FINES SID POORLY-GRADED SANDS, SAND-GRAVEL <br /> (More than half of MIXTURES WITH LITTLE OR NO FINES <br /> coarse fraction <br /> is smaller than SM SILTY SANDS, SAND-GRAVEL-SILT MIXTURES <br /> the #4 sieve) SANDS WITH <br /> OVER 12% FINES <br /> SC CLAYEY SANDS, SAND-GRAVEL-CLAY MIXTURES <br /> INORGANIC SILTS&VERY FINE SANDS, <br /> ML SILTY OR CLAYEY FINE SANDS, <br /> CLAYEY SILTS WITH SLIGHT PLASTICITY <br /> SILTS AND CLAYS INORGANIC CLAYS OF LOW TO MEDIUM <br /> CL PLASTICITY, GRAVELLY CLAYS, SANDY CLAYS, <br /> (Liquid limit less than 50) SILTY CLAYS, LEAN CLAYS <br /> FINE <br /> GRAINED OL ORGANIC SILTS&ORGANIC SILTY CLAYS <br /> SOILS OF LOW PLASTICITY <br /> (More than half INORGANIC SILTS, MICACEOUS OR <br /> of material MH DIATOMACEOUS FINE SAND OR SILT <br /> is smaller than <br /> the #200 sieve) SILTS AND CLAYS INORGANIC CLAYS OF HIGH PLASTICITY, <br /> CH FAT CLAYS <br /> (Liquid limit greater than 50) <br /> ORGANIC CLAYS&ORGANIC SILTS <br /> OH OF MEDIUM-TO-HIGH PLASTICITY <br /> LOAMS UNDER USDA SOIL CLASSIFICATION SYSTEM <br /> ( SOIL OF APPROXIMATELY EQUAL SAND/SILT/CLAY <br /> UNIFIED SOIL CLASSIFICATION SYSTEM PLATE <br /> k4K L E I N F E L D E R <br /> ,. PROPOSED MARCH LANE UNDERCROSSING <br /> o[Drafted By: DWA�ProjecutmNto.: 20 3712 08 E01 UNION PACIFIC RAILROAD A— <br /> Date: 7/13/98er: STOCKTON, CALIFORNIA <br /> Copyright Kleinfelder,Inc. 1998 <br />