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AC <br />Cement ConcreteCC <br />Asphalt Concrete <br />No Visible Sheen <br />Slight Sheen <br />Moderate Sheen <br />Heavy Sheen <br />Not Tested <br />NS <br />SS <br />MS <br />HS <br />NT <br />ADDITIONAL MATERIAL SYMBOLS <br />Measured groundwater level in <br />exploration, well, or piezometer <br />Measured free product in well or <br />piezometer <br />Graphic Log Contact <br />Groundwater Contact <br />Material Description Contact <br />Laboratory / Field Tests <br />Sheen Classification <br />Sampler Symbol Descriptions <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 />GRAPH <br />Topsoil/ <br />Forest Duff/Sod <br />Crushed Rock/ <br />Quarry Spalls <br />FIGURE A-1 <br />2.4-inch I.D. split barrel <br />SYMBOLS TYPICAL <br />KEY TO EXPLORATION LOGS <br />CR <br />DESCRIPTIONSLETTER <br />TS <br />GC <br />PT <br />OH <br />CH <br />MH <br />OL <br />GM <br />GP <br />GW <br />DESCRIPTIONS <br />TYPICAL <br />LETTER <br />(APPRECIABLE AMOUNT <br />OF FINES) <br />MAJOR DIVISIONS <br />POORLY-GRADED SANDS, <br />GRAVELLY SAND <br />PEAT, HUMUS, SWAMP SOILS <br />WITH HIGH ORGANIC <br />CONTENTS <br />CLEAN SANDS <br />GRAVELS WITH <br />FINES <br />CLEAN <br />GRAVELS <br />HIGHLY ORGANIC SOILS <br />SILTS <br />AND <br />CLAYS <br />SILTS <br />AND <br />CLAYS <br />SAND <br />AND <br />SANDY <br />SOILS <br />GRAVEL <br />AND <br />GRAVELLY <br />SOILS <br />(LITTLE OR NO FINES) <br />FINE <br />GRAINED <br />SOILS <br />COARSE <br />GRAINED <br />SOILS <br />SW <br />MORE THAN 50% <br />OF COARSE <br />FRACTION <br />RETAINED ON NO. <br />4 SIEVE <br />CL <br />WELL-GRADED SANDS, <br />GRAVELLY SANDS <br />SILTY GRAVELS, GRAVEL - SAND <br />- SILT MIXTURES <br />LIQUID LIMIT <br />GREATER THAN 50 <br />SILTY SANDS, SAND - SILTMIXTURES <br />(APPRECIABLE AMOUNT <br />OF FINES) <br />SOIL CLASSIFICATION CHART <br />LIQUID LIMIT <br />LESS THAN 50 <br />SANDS WITH <br />FINES <br />SP <br />(LITTLE OR NO FINES) <br />ML <br />SC <br />SM <br />NOTE: Multiple symbols are used to indicate borderline or dual soil classifications <br />MORE THAN 50% <br />OF COARSE <br />FRACTION <br />PASSING NO. 4 <br />SIEVE <br />CLAYEY GRAVELS, GRAVEL - <br />SAND - CLAY MIXTURES <br />CLAYEY SANDS, SAND - CLAY <br />MIXTURES <br />INORGANIC SILTS, ROCK <br />FLOUR, CLAYEY SILTS WITH <br />SLIGHT PLASTICITY <br />ORGANIC SILTS AND ORGANIC <br />SILTY CLAYS OF LOW <br />PLASTICITY <br />INORGANIC SILTS, MICACEOUS <br />OR DIATOMACEOUS SILTY <br />SOILS <br />ORGANIC CLAYS AND SILTS OF <br />MEDIUM TO HIGH PLASTICITY <br />INORGANIC CLAYS OF HIGH <br />PLASTICITY <br />MORE THAN 50% <br />PASSING NO. 200 <br />SIEVE <br />MORE THAN 50% <br />RETAINED ON NO. <br />200 SIEVE <br />WELL-GRADED GRAVELS, <br />GRAVEL - SAND MIXTURES <br />POORLY-GRADED GRAVELS,GRAVEL - SAND MIXTURES <br />INORGANIC CLAYS OF LOW TO <br />MEDIUM PLASTICITY, GRAVELLY <br />CLAYS, SANDY CLAYS, SILTY <br />CLAYS, LEAN CLAYS <br />GRAPH <br />SYMBOLS <br />Standard Penetration Test (SPT) <br />Shelby tube <br />Piston <br />Direct-Push <br />Bulk or grab <br />Continuous Coring <br />Distinct contact between soil strata <br />Approximate contact between soil <br />strata <br />Contact between geologic units <br />Contact between soil of the same <br />geologic unit <br />%F <br />%G <br />AL <br />CA <br />CP <br />CS <br />DS <br />HA <br />MC <br />MD <br />OC <br />PM <br />PI <br />PP <br />PPM <br />SA <br />TX <br />UC <br />VS <br />Percent fines <br />Percent gravel <br />Atterberg limits <br />Chemical analysis <br />Laboratory compaction test <br />Consolidation test <br />Direct shear <br />Hydrometer analysis <br />Moisture content <br />Moisture content and dry density <br />Organic content <br />Permeability or hydraulic conductivity <br />Plasticity index <br />Pocket penetrometer <br />Parts per million <br />Sieve analysis <br />Triaxial compression <br />Unconfined compression <br />Vane shear <br />Blowcount is recorded for driven samplers as the number <br />of blows required to advance sampler 12 inches (or <br />distance noted). See exploration log for hammer weight <br />and drop. <br />A "P" indicates sampler pushed using the weight of the <br />drill rig. <br />A "WOH" indicates sampler pushed using the weight of <br />the hammer. <br />Rev. 02/16