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4 <br /> 'd <br /> UNIFID SOIL CLAS <br /> SIFICATIN HAFT <br /> cc <br /> w DESCRIPTION MAJOR DIVISIONS <br /> N <br /> } <br /> GW <br /> WELL-GRADED <br /> OR NO FINES LS OR GRAVEL-SAND MIXTURES, CLEAN �N� m w <br /> }M <br /> GRAVELS LL6 Z a to <br /> ,.. <br /> POORLY-GRADED GRAVELS OR GRAVEL-SAND (LITTLE OR z In <br /> GP MIXTURES,LITTLE OR NO FINES NO FINES) w z in Iv' :,N <br /> 7 U. w o a cn <br /> GM SILTY GRAVELS,GRAVEL-SAND-SILT GRAVELS u� y N w <br /> MIXTURES WITH FINES 0 s $ W N <br /> CLAYEY GRAVELS,GRAVEL-SAND-CLAY (APPRECIABLE Z LL o <br /> GG MIXTURES AMOUNT OF FINES) z Z O <br /> 00 " Q LL <br /> Z <br /> WELL-GRADED SAND OR GRAVELLY SANDS, CLEAN =Z w w <br /> SW LFrTLE OR NO FINES SANDS ° <br /> "'``'"`'' POORLY-GRADED SANDS OR GRAVELLY SANDS, NO FINES) w(L(LITTLETLf OR z w vi�_ s 2 w <br /> SP N c1 Q cw7 m <br /> U TTLE OR NO FINES <br /> z z + w �w O �¢ a <br /> aN VS Hw <br /> SM SILTY SANDS,SAND-SILT MIXTURES SANDS N in w a w <br /> WITH FINES ¢¢ N j w p <br /> SC CLAYEY SANDS,SAND-CLAY MIXTURES (APPRECIABLE Z y 0 a N w <br /> AMOUNT OF FINES) _ LL O ¢m <br /> INORGANIC SILTS,VERY FINE SANDS,ROCK FLOUR.SILTY OR �y w z <br /> ML CLAYEY FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY <br /> INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY,GRAVELLY SILTS&!CLAYSw j of <br /> CL CLAYS,SANDY CLAYS,SILTY CLAYS,LEAN CLAYS LK�UiO LIMIT LESS THAN 50' N y <br /> ORGANIC SILTS AND ORGANIC SILT-CLAYS D LL O w <br /> OL OF LOW PLASTICITY O z <br /> Z <br /> U. wg <br /> ORGANIC SILTS AND ORGANIC SILT-CLAYS <br /> MH OF I OW PLASTICIl 7 cc a <br /> CH INORGANIC CLAYS OF HIGH PLASTICITY,FAT SILTS&CLAYS w <br /> CLAYS LIOUID LIMIT GREATER THAN 50 w <br /> cc� <br /> ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY, tin <br /> .�. . OH ORGANIC SILTS <br /> PT PEAT AND OTHER HIGHLY ORGANIC SOILS HIGHLY ORGANIC SOILS <br /> I <br /> KEY TO SAMPLES <br /> INDICATES UNDISTURBED SAMPLES <br /> ® INDICATES DISTURBED SAMPLE <br /> INDICATES NO RECOVERY IN SAMPLE <br /> TYPES OF SOIL SAMPLERS <br /> U- DAMES&MOORE TYPE"U"SAMPLER <br /> P- PISTON-TUBE SAMPLER 3"DIAMETER <br /> CA- MODIFIED CALIFORNIA SAMPLER <br /> A- HAND AUGER <br /> Y- STATIC GROUNDWATER SURFACE <br /> �- FIRST GROUNDWATER <br /> SOIL CLASSIFICATION HART <br /> AND KEY TO BORING LOG <br /> ROGER FOOTT ASSOCIATES, INC. <br /> FIGURE 4 <br />