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MAJOR DIVISIONS TYPICAL NAMES <br />COARSEGRAINEDSOILSMorethanHalf>#200GRAVELS <br />MORE THAN HALF <br />COARSE FRACTION <br />IS LARGER THAN <br />NO. 4 SIEVE <br />CLEAN GRAVELS <br />WITH LITTLE OR <br />NO FINES <br />GW WELL GRADED GRAVELS, GRAVEL-SAND MIXTURES <br />GP POORLY GRADED GRAVELS, GRAVEL- SAND MIXTURES <br />GRAVELS WITH <br />OVER 15% FINES <br />GM SILTY GRAVELS, POORLY GRADED GRAVEL-SAND-SILT MIXTURES <br />GC CLAYEY GRAVELS, POORLY GRADED GRAVEL-SAND-CLAY MIXTURES <br />SANDS <br />MORE THAN HALF <br />COARSE FRACTION <br />IS SMALLER THAN <br />NO. 4 SIEVE <br />CLEAN SANDS <br />WITH LITTLE <br />OR NO FINES <br />SW WELL GRADED SANDS, GRAVELLY SANDS <br />SP POORLY GRADED SANDS, GRAVELLY SANDS <br />SANDS WITH <br />OVER 15% FINES <br />SM SILTY SANDS, POORLY GRADED SAND-SILT MIXTURES <br />SC CLAYEY SANDS, POORLY GRADED SAND-CLAY MIXTURES <br />FINEGRAINEDSOILSMorethanHalf<#200sieveSILTS AND CLAYS <br />LIQUID LIMIT LESS THAN 50 <br />ML INORGANIC SILTS AND VERY FINE SANDS, ROCK FLOUR, SILTY OR <br />CLAYEY FINE SANDS, OR CLAYEY SILTS WITH SLIGHT PLASTICITY <br />CL <br />INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY, GRAVELLY CLAYS, <br />SANDY CLAYS, SILTY CLAYS, <br />LEAN CLAYS <br />OL ORGANIC CLAYS AND ORGANIC SILTY CLAYS OF LOW PLASTICITY <br />SILTS AND CLAYS <br />LIQUID LIMIT GREATER THAN 50 <br />MH INORGANIC SILTS , MICACEOUS OR DIATOMACIOUS FINE SANDY OR <br />SILTY SOILS, ELASTIC SILTS <br />CH INORGANIC CLAYS OF HIGH PLASTICITY, FAT CLAYS <br />OH ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY, ORGANIC SILTS <br />HIGHLY ORGANIC SOILS Pt PEAT AND OTHER HIGHLY ORGANIC SOILS <br />Note: Dual symbols are used to indicate borderline soil classifications. <br />Pushed Shelby Tube Water Level measured at time of Drilling <br />(with date noted) <br />Standard Penetration Test <br />(2-inch outside diameter) <br />Water Level measured after Drilling <br />(with date noted) <br />Modified California <br />(3-inch outside diameter)Hand Auger Cuttings <br />Split Barrel Sampler <br />(2 ½-inch outside diameter)Grab Sample <br />Undisturbed Sample Sample Attempt with No Recovery <br />Continuous Core Sample <br />SOIL CLASSIFICATION CHART AND LOG KEY <br />Unified Soil Classification System (ASTM D 2487)