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i LT. ' UNIFIED SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS USCS TYPICAL SYMBOL DESCRIPTIONS } GW WELL GRADED GRAVELS, GRAVEL-SAND CLEAN GRAVELS `�, MIXTURE'S WITH LITTLE OR NO FINES "1177-1 L IYTLE OR NO FINES # GRAVELS � GP POORLY-GRADED GRAVEL S, GRAVEL-SAND MIXTURES WITH LITTLE OR NO FINES MORE THA AT HALF SILTY GRAVELS, GRAVEL-SILT-SAND COARSE FRACTION G M IS LARGER THAN GRAVELS MIXTURES COARSE THE .— SIEVE WITH OVER ,- GRAINED 12 f FINE'S GC CLAYEYGRA VELS, GRAVEL-SAND-CLAY SOILS I == MIXTURES (MORE THAN HALF OF MATERIAL IS _ SW WELL,-GRADED SANDS, SAND-GRAVEL LARGER THAN I CL EAN SANDS _ _ MIXTURES WITH LITTLE OR NO FINES THE#200 SIEVE) WITH LITTLE OR SANDS A'O FIN1.=SSP POORLY GRADED SANDS, SAND-GRAVEL MIXTURES WITH LITTLE OR NO FINES MORE THAN MAI F COARSE FRACY'ION SM SILTY SANDS, SAND-GRAVEL-SILT MIXTURES ; IS SMALLER THA Al SANDS WITH THE#4 SIEVE OVER 12%FINES V /i SC CLAYEYSANDS, SAND-GRA VEL-CL.AYMIX TURES I off M L INORGANIC SILTS& VERYFINE SANDS, I SILTY OR CLAYEYFINE SANDS, I CLAYEY SILTS WITH SLIGHT PLASTICITY SILTS AND CLAYS I C L INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY, GRAVELLY CLAYS, SANDY CLA SILTY CIA YS. LEAN CLAYS FINE LIQUID LIMIT LESS THAAT 50 GRAINED 4 OL ORGANIC SILTS&ORGANIC SILTY CLAYS SOILS I I I I OF LOW PLASTICITY (MORE THAN HAI F MH INORGANIC SILTS, MICACEOUS OR OF MATERIAL 1S DIATOMACEOUS FINE SAND OR SILT SMALLER THAN THE#200 SIEVE) SILTS AND CLAYS CH INORGANIC CLAYS OF HIGH PLASTICITY, FAT CLAYS LIG UID LIMIT GREATER THAN 50 OH ORGANIC CLAYS& ORGANIC SILTS OF MEDIUM-TO-HIGH PLASTICITY I HIGHLY ORGANIC SOILS PT PEAT, HUMUS, SWAMP SOILS WITH HIGH ORGANIC CONTENTS SOIL CLASSIFICATION SYSTEM PLATE K L E I N F E L D E R DELTA SIGN AND CRANE SERVICE L 2100 SANGUINETTI LANE A-1 I� Drafted By: Project 20 2864-02.E02 CALIFORNIA Date: File Number: STOCKTON, CAL Copyriglu Kleinjelder,Inc.1999