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I <br /> UNIFIED SOIL CLASSIFICATION SYSTEM(USCS) I <br /> (Modified From USACE Tech Memo 3-357,ASTM D2487,and ASTM D2488) <br /> MAJOR DIVISIONS GROUP/GRAPHIC TYPICAL IDENTIFICATIONS <br /> SYMBOL I <br /> GW .111• Well-Graded Gravel;Well-Graded <br /> I. Gravel with Sand <br /> Gravel -O <br /> (less than 5% as-) I <br /> Gravels fines) GP .3° Poorly Graded Gravel;Poorly Graded <br /> (more than 50% o pC Gravel with Sand <br /> of coarse •Gi 5 - <br /> fraction retained •(�• <br /> on No.4 sieve) Silty or Clayey GM / ,® Silty Gravel;Silty Gravel with Sand <br /> Gravel <br /> COARSE- I <br /> (more fines) 12% Clayey Gravel;Clayey Gravel with <br /> GRAINED GC 6 Sand <br /> SOILS <br /> (more than 50% I <br /> retained on No. SW Well-Graded Sand;Well-Graded Sand <br /> 200 sieve) Sand with Gravel <br /> (less than 5% <br /> fines) SP . Poorly Graded Sand;Poorly Graded <br /> Sands . Sand with Gravel <br /> (50%or more of <br /> I <br /> coarse fraction <br /> passess <br /> No.the 4 Silty or SM ' Silty Sand;Silty Sand with Gravel <br /> Clayey Sand <br /> (more than 12% I <br /> fines) SC ;!. •.•• Clayey Sand;Clayey Sand with Gravel <br /> ML Silt;Silt with Sand or Gravel;Sandy or <br /> I <br /> Gravelly Silt <br /> Inorganic / <br /> Silts and Clays Lean Clay;Lean Clay with Sand or <br /> (liquid limit less CL j Gravel;Sandy or Gravelly Lean Clay <br /> than 50) _ <br /> — <br /> I <br /> FINE-GRAINED — Organic Silt or Clay;Organic Silt or <br /> SOILS Organic OL _ Clay with Sand or Gravel;Sandy or <br /> — - Gravelly Organic Silt or Clay <br /> (50%or more — — <br /> passes the No. Elastic Silt;Elastic Silt with Sand or <br /> 200 sieve) MH Gravel;Sandy or Gravelly Elastic Silt I <br /> Inorganic <br /> Silts and Clays /// Fat Clay;Fat Clay with Sand or Gravel; <br /> (liquid limit 50 or CH // Sandy or Gravelly Fat Clay <br /> more) !/ <br /> ,// Organic Silt or Clay;Organic Silt or <br /> I <br /> Organic OH // Clay with Sand or Gravel;Sandy or <br /> '�// Gravelly Organic Silt or Clay <br /> ORGANIC Primarily organic matter,dark in PT Peat or other highly organic soils(see <br /> I <br /> SOILS color,and organic odor ASTM D4427) <br /> NOTE: No.4 size=4.75 mm=0.187 in.; No.200 size=0.075 mm 0.003= in. <br /> I <br /> N <br /> m <br /> O <br /> I 0 <br /> z <br /> = NOTES South Terminal Wharf <br /> a symbols(symbolsseparated byhyphen. Upgrades for RO/RO <br /> I <br /> 0 1.Dual a i.e..SP-SM,Sand <br /> m with Silt)are used for soils with between 5%and 12%fines or when Port of Everett,Washington <br /> �, the liquid limit and plasticity index values plot in the CL-ML area of <br /> Z, the plasticity chart. Graphics shown on the logs for these soil types SOIL DESCRIPTION <br /> N are a combination of the two graphic symbols(e.g.,SP and SM). <br /> co <br /> AND LOG KEY <br /> 2.Borderline symbols(symbols separated by a slash,i.e..CUML. <br /> z Lean Clay to Silt;SP-SM/SM,Sand with Silt to Silty Sand)indicate August 2014 21-1-21962-003 <br /> E that the soil properties are close to the defining boundary betweeno <br /> I m two groups. <br /> SHANNON &WILSON,INC. FIG.A-1 <br /> N Geotechnical and Environmental Consultants Sheet 2 of 3 <br /> I <br />