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SOIL CLASSIFICATION CHART <br />ADDITIONAL MATERIAL SYMBOLS <br />MAJOR DIVISIONS <br />SYMBOLS <br />TYPICAL <br />DESCRIPTIONS <br />GRAPH <br />LETTER <br />GRAVEL <br />CLEAN GRAVELS <br />030 0 <br />GW <br />WELL -GRADED GRAVELS, GRAVEL - <br />SAND MIXTURES <br />AND <br />GRAVELLY <br />SOILS <br />(LITTLE OR NO FINES) <br />D 0 0 <br />o O <br />O O <br />GP <br />POORLY -GRADED GRAVELS, <br />GRAVEL -SAND MIXTURES <br />GRAVELS WITH <br />FINES <br />GM <br />SILTYGRAVEL-SAND- <br />IL MGRAV GRAVELS, <br />.COARSE <br />GRAINED <br />SOILS <br />MORE THAN50% <br />OF COARSE <br />FRACTION RETAINEC <br />_ <br />ON NO. a SIEVE <br />1APPRECIABLEAMOUNT <br />OFFINES) <br />0 <br />GC <br />CLAYEY GRAVELS, GRAVEL - SAND - <br />CLAY MIXTURES <br />CLEAN SANDS <br />Sw <br />WELL -GRADED SANDS. GRAVELLY <br />SANDS <br />MORE THAN 50"' <br />SAND <br />SP <br />POORLY- GRADED SANDS. GRAVELLY <br />SAND <br />RETAINED <br />NO. 200 SIEVE <br />AND <br />SANDY <br />(LITTLE OR NOFINW, <br />SOILS <br />SANDS WITH <br />SM <br />SILTY SANDS, SAND -SILT MIXTURES <br />MORE THAN 50X. <br />OF COARSE <br />FINES <br />FRACTION PASSING <br />SC <br />CLAYEY SANDS, SAND - CLAY <br />MIXTURES <br />ON NO. 4 SIEVE <br />(APPREOV.BLE AMOUNT( <br />OFFINES3 <br />INORGANIC SILTS, ROCK FLOUR, <br />ML <br />CLAYEY SILTS WITH SLIGHT <br />PLASTICITY <br />FINE <br />GRAINED <br />SILTS AND <br />CLAYS <br />LIQUID LIMIT <br />LESS THAN 50 <br />CL <br />INORGANIC CLAYS OF LOW TO <br />MEDIUM PLASTICITY, GRAVELLY <br />CLAYS, SANDY CLAYS. SILTY CLAYS. <br />LEAN CLAYS <br />OL <br />ORGANIC SILTS AND ORGANIC SILTY <br />CLAYS OF LOW PLASTICITY <br />SOILS <br />MORE THAN 50% <br />PASSING <br />INORGANIC SILTS. <br />SILTYOILSS OR <br />NO.200 SIEVE <br />CLAYS OF HIGH <br />SILTS AND <br />CLAYS <br />LIQUID LIMIT GREATERINORGANIC <br />THAN 50PLASTICITY <br />CHDIATOMACEOUS <br />ORGANIC CLAYS AND SILTS OF <br />MEDIUM TO HIGH PLASTICITY <br />PEAT HUMUS SWAMP SOILS WITH <br />SYMBOLS <br />TYPICAL <br />DESCRIPTIONS <br />RAPH <br />LETTER <br />AC <br />Asphalt Concrete <br />CC <br />Cement Concrete <br />CR <br />Crushed Rock/ <br />Quarry Spalls <br />�, ♦ r, (r, <br />SODSod/Forest <br />Duff <br />TS <br />Topsoil <br />Groundwater Contact <br />Measured groundwater level in exploration, <br />well, or piezometer <br />IMeasured free product in well or <br />Graphic Log Contact <br />Distinct contact between soil strata <br />Approximate contact between soil strata <br />Material Description Contact <br />Contact between geologic units <br />Contact between soil of the same geologic <br />unit <br />HIGHLYORGANICSOILS <br />HIGH ORGANIC CONTENTS <br />Laboratory / Field Tests <br />NOTE: Multiple symbols are used to indicate borderline or dual soil classifications <br />%F <br />/oG <br />Percent fines <br />Percent gravel <br />AL <br />Atterberg limits <br />Sampler Symbol Descriptions <br />CA <br />Chemical analysis <br />CP <br />Laboratory compaction test <br />® 2.4-inch I.D. split barrel / Dames & Moore (D&M) <br />CS <br />Consolidation test <br />Dry density <br />®DD <br />Standard Penetration Test (SPT) <br />DS <br />Direct shear <br />Hydrometer analysis <br />.HA <br />Shelby tube <br />MC <br />Moisture content <br />® Piston <br />MD <br />Moisture content and dry density <br />Mohs <br />Mohs hardness scale <br />Direct -Push <br />OC <br />Organic content <br />PM <br />Permeability or hydraulic conductivity <br />0] Bulk or grab <br />PI <br />Plasticity index <br />Point lead test <br />®PL <br />Continuous Coring <br />PP <br />Pocket penetrometer <br />SA <br />Sieve analysis <br />Blowcount is recorded for driven samplers as the number of <br />Tx <br />UC <br />U nco f compression <br />Unconfined compression <br />blows required to advance sampler 22 inches (or distance noted). <br />UU <br />Unconsolidated undrained triaxial con <br />See exploration log for hammer weight and drop. <br />VS <br />Vane shear <br />"PI indicates sampler pushed using the weight of the drill rig. <br />Sheen Classification <br />"WOH" indicates sampler pushed using the weight of the <br />NS <br />No Visible Sheen <br />hammer. <br />SS <br />Slight Sheen <br />MS <br />Moderate. Sheen <br />HS <br />Heavy Sheen <br />NOTE: The reader must refer to the discussion in the report text and the logs of explorations for a proper understanding of subsurface conditions. <br />Descriptions on the logs apply only at the specific exploration locations and at the time the <br />explorations were made; they are not warranted to be <br />representative of subsurface conditions at other locations or times. <br />Keyto Exploration Logs <br />MEN G I IN EV' <br />Figure A-1 <br />Rev01/2022 <br />