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SOIL CLASSIFICATION CHART ADDITIONAL MATERIAL SYMBOLS <br /> MAJOR DIVISIONS SYMBOLS TYPICAL SYMBOLS TYPICAL <br /> GRAPH LETTER DESCRIPTIONS GRAPH LETTER DESCRIPTIONS <br /> CLEAN a 15° ° OW ND MIIXXTU ESS AC Asphalt Concrete <br /> GRAVEL GRAVELS ) nC GGRRALVEL-SA <br /> AND _- -- <br /> GRA <br /> (LITTLE ORNOFINES) <br /> jQOOOC GP GRAVEL SANDEMRAVE <br /> GLS <br /> / /// <br /> /\ \//i\ CC Cement Concrete <br /> COARSE GRAVELS WITH ,, 11-pi' GM SILTY GRAVELS,GRAVEL-SAND MORE THAN 50% -SILT MIXTURES <br /> GRAINED OF COARSE FINES lb , '• • CR Crushed Rock/ <br /> SOILS FRACTIONPO 41.0 Quarry Spalls <br /> RETAINED ON NO. k <br /> (APPRECIABLE AMOUNT CLAYEY GRAVELS,GRAVEL- <br /> 4 SIEVE OF FINES) . O C GC <br /> • SAND-CLAY MIXTURES Topsoil/ <br /> TS Forest Duff/Sod <br /> S.W WELL-GRADED SANDS, . +•+• <br /> CLEAN SANDS GRAVELLY SANDS <br /> MORE THAN 50% SAND <br /> RETAINED ON NO. AND (LITTLE OR NO FINES) +• Groundwater Contact <br /> 200 SIEVE SANDY SP POORLY-GRADED SANDS, <br /> SOILS GRAVELLY SAND T Measured groundwater level in <br /> exploration,well,or piezometer <br /> MORE THAN 50% SANDS WITH :. SM SILTY SANDS,SAND-SILT <br /> OF COARSEMIXTURES Groundwater observed at time of <br /> FRACTION FINES <br /> PASSING NO.4 • — exploration <br /> SIEVE (APPRECIABLE AMOUNT SC CLI)TURAYEY SANDS,SAND-CLAY <br /> OF FINES) MES Perched water observed at time of <br /> INORGANIC SILTS,ROCK FLOUR, exploration <br /> ML PL�PSTICIYEY S�ILTS WITH SLIGHT It Measured free product in well or <br /> // INORGANIC CLAYS OF LOW TO <br /> piezometer <br /> SILTS <br /> AND LIQUID LIMIT CL CLAYS SANDY CLAYS,S LTYLLY Graphic LogContact <br /> FINE LESS THAN 50 CLAYS,LEAN CLAYS p <br /> GRAINED CLAYS <br /> SOILS ORGANIC SILTS AND ORGANIC Distinct contact between soil strata or <br /> �� OL PLASTICITYL SOFLOW geologic units <br /> MORE THAN 50% 1� INORGANIC SILTS,MICACEOUS Approximate location of soil strata <br /> PASSING NO.200 I I I MH OR DIATOMACEOUS SILTY / change within a geologic soil unit <br /> SIEVE I SOILSg g. <br /> SILTS LIQUID LIMIT )��/ INORGANIC CLAYS OF HIGH Material Description Contact <br /> AND CLAYS GREATER THAN 50 j C'H PLASTICITY p <br /> � MI�JDistinct contact between soil strata or <br /> OH MED UM TO HIGH PLASTICITY F geologic units <br /> — _ _ ____ Approximate location of soil strata <br /> HIGHLY ORGANIC SOILS PT PEAT HUMUS,SWAMP SOILS change within a geologic soil unit <br /> WITH HIGH ORGANIC CONTENTS <br /> NOTE: Multiple symbols are used to indicate borderline or dual soil classifications <br /> Laboratory/Field Tests <br /> Sampler Symbol Descriptions %F Percent fines <br /> AL Atterberg limits <br /> II II 2.4-inch I.D.split barrel CA Chemical analysis <br /> CP Laboratory compaction test <br /> II Standard Penetration Test(SPT) CS Consolidation test <br /> DS Direct shear <br /> ■ Shelby tube HA Hydrometer analysis <br /> MC Moisture content <br /> M Piston MD Moisture content and dry density <br /> OC Organic content <br /> III Direct-Push PM Permeability or hydraulic conductivity <br /> PP Pocket penetrometer <br /> Bulk or grab PPM Parts per million <br /> SA Sieve analysis <br /> TX Triaxial compression <br /> Blowcount is recorded for driven samplers as the number VS UC Vaanene shear <br /> of blows required to advance sampler 12 inches(or — <br /> distance noted). See exploration log for hammer weight Sheen Classification <br /> and drop. NS No Visible Sheen <br /> A"P"indicates sampler pushed using the weight of the SS Slight Sheen <br /> drill rig. MS Moderate Sheen <br /> HS Heavy Sheen <br /> NT Not Tested <br /> NOTE:The reader must refer to the discussion in the report text and the logs of explorations for a proper understanding of subsurface <br /> conditions. Descriptions on the logs apply only at the specific exploration locations and at the time the explorations were made;they are <br /> not warranted to be representative of subsurface conditions at other locations or times. <br /> • <br /> KEY TO EXPLORATION LOGS <br /> GEOENGINEER_ FIGURE A-1 <br />