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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 GRAVELS o�° ° GW SAND MILLIIXTURESRAVELS,CRAVEL- <br /> GRAVEL AC Asphalt Concrete <br /> AND o 0 <br /> GRAVELLY f'_TLEOR NO FINE51 O o POORLY-GRADED GRAVELS, \ \ \ <br /> SOILS o o GP GRAVEL-SAND MIXTURES �� <br /> �\�\i�\ CC Cement Concrete <br /> COARSE G.M SILTY GRAVELS,GRAVEL-SAND- <br /> GRAINED MORE THAN 50% GRAVELS WITH SILT MIXTURES <br /> SOILS OF COARSE FINES CR Crushed Rock/ <br /> FRACNON RETAINECQuarry SpaliS <br /> ON NO.4 SIEVE (APPRECIABLE AMOWJ CLAYEY GRAVELS,GRAVEL-SAND- <br /> OFFINe) 0 GC CLAY MIXTURES <br /> SOD Sod/Forest Duff <br /> $W WELL-GRADED SANDS,GRAVELLY <br /> CLEAN SANDS SANDS <br /> MORETRAN50% SAND <br /> NO�`200 SIEVE AND ILITTLEOR NO FINE51 - p <br /> S TO 501E <br /> SANDY SP POORLY-GRAOEDSANDS,GRAVELLY T <br /> SOILS SAND <br /> MORE THAN 50% SANDS WITH SM SILTY SANDS,SAND-SILT MIXTURES -. /+ /� <br /> OF COARSE FINES Groundwater Contact <br /> FRACTION PASSING <br /> ON NO 4 SIEVE <br /> IAPPF EAIdOONT SC CLAYEYANDs,SAND Dtfv <br /> OFFINEi, MIXTURES Measured groundwater level in exploration, <br /> _ well,or piezometer <br /> INORGANIC SILTS,ROCK FLOUR, ' <br /> ML CLAYEY SILTS WITH SLIGHT <br /> PLASTICITY Measured free product in well or piezometer <br /> INORGANIC CLAYS OF LOW TO <br /> SILTS ILAYS AND LIQUIDLIMT CL cuYs SANDYTCLLAYS SALTY CLAYS. Graphic Log Contact <br /> FINE LESS THAN 50 LEAN CLAYS'.'. <br /> GRAINED <br /> SOILS OL ORGANIC SILTS allo ORGANIC s aTv Distinct contact between soil strata <br /> CLAYS OE LOW PLASTICITY <br /> / Approximate contact between soil strata <br /> MORE200 SIEVE <br /> VE MH DIA GANIC SIDS SILTY <br /> OR <br /> 'ASS"N6 Material Description Contact <br /> NO 200 SIEVE <br /> SI LTS CLAYS D LIQUID LIMIT GREATER CH 11' RGANICC€AYSOF HIGH Contact between geologic units <br /> THAN 5C PLAStICITY' <br /> oRCANlccLays.aNDicrs of Contact between soil of the same geologic <br /> i OH MEDIUM TO HIGH'PLASTIC{TY,. ..� unit <br /> HIGHLY ORGANIC SOILS PEAT HUMUS SWAM1pSbILs WIT" <br /> PT HIc"oRcnNleco"TENTS Laboratory/ Field Tests <br /> NOTE: Multiple symbols are used to indicate borderline or dual soil classiIfications %F Percent fines <br /> %G Percent gravel <br /> Sampler Symbol Descriptions AL Atterberg limits <br /> ® CA Chemical analysis <br /> 2.4-inch I.D.split barrel CP Laboratory compaction test <br /> 171-71 CS Consolidation test <br /> Standard Penetration Test(SPT) DO Dry density <br /> DS Direct shear <br /> Shelby tube HA Hydrometer analysis <br /> ElPiston MC Moisture content <br /> MD Moisture density <br /> Direct-Push Mohs Mohs hardness scale <br /> OC Organic content <br /> Bulk or grab PM Permeability or hydraulic conductivity <br /> m <br /> PI Plasticity index <br /> ® Continuous Coring PP Pocket penetrometer <br /> SA Sieve analysis <br /> Blowcount is recorded for driven samplers as the number of TX nco compression <br /> U <br /> blows required to advance sampler 12 inches(or distance noted). UC Unconff ined compression <br /> VS Vane shear <br /> See exploration log for hammer weight and drop. <br /> "P"indicates sampler pushed using the weight of the drill rig. Sheen Classification <br /> NS No Visible Sheen <br /> "WOH"indicates sampler pushed using the weight of the SS Slight Sheen <br /> hammer. MS Moderate Sheen <br /> HS 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 explorations were made;they are not warranted to be <br /> representative of subsurface conditions at other locations or times. <br /> Key to Exploration Logs <br /> GWENGINEERS FigureA-1 <br /> Rev 06/2017 <br />