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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> Division Group Group Name <br /> Symbol <br /> GW Well-graded Gravel (with Sand) <br /> GW-GM Well-graded Gravel with Silt(and Sand) <br /> GW-GC Well-graded Gravel with Clay(and Sand) <br /> Ln <br /> Gravel GP Poorly graded Gravel(with Sand) <br /> CD N (%gravel > <br /> d %sand) GP-GM Poorly graded Gravel with Silt (and Sand) <br /> Z <br /> cu GP-GC Poorly graded Gravel with Clay(and Sand) <br /> 'o -C <br /> 0 o GM Silty Gravel (with Sand) <br /> c GC Clayey Gravel(with Sand) <br /> _y <br /> c7 v SW Well-graded Sand(with Gravel) <br /> C: <br /> u SW-SM Well-graded Sand with Silt(and Gravel) <br /> v a <br /> SW-SC Well graded Sand with Clay(and Gravel) <br /> 0 <br /> Ln <br /> Sand SP Poorly graded Sand(with Gravel) <br /> C <br /> r (%sand >_ <br /> %gravel) SP-SM Poorly graded Sand with Silt(and Gravel) <br /> E SP-SC Poorly graded Sand with Clay(and Gravel) <br /> SM Silty Sand(with Gravel) <br /> SC Clayey Sand(with Gravel) <br /> ML Silt(with Sand or Gravel),Sandy Silt(with Gravel), Gravelly Silt(with Sand) <br /> o, CL-ML Silty Clay(with Sand or Gravel),Sandy Silty Clay(with Gravel),Gravelly Silty Clay(with Sand) <br /> Silt or Clay <br /> !� -� LL< 50 CL Lean Clay(with Sand or Gravel),Sandy lean Clay(with Gravel),Gravelly lean Clay(with Sand) <br /> J9 C Organic Clay(with Sand or Gravel),Sandy organic Clay(with Gravel),Gravelly organic Clay(with <br /> `o 'N OL Sand),organic Silt(with Sand or Gravel),Sandy organic Silt(with Gravel),Gravelly organic Silt <br /> E N with Sand <br /> �? d MH Elastic Silt(with Sand or Gravel),Sandy elastic Silt(with Gravel),Gravelly elastic Silt(with Sand) <br /> � z <br /> U. v Silt or Clay CH Fat Clay(with Sand or Gravel), Sandy fat Clay(with Gravel),Gravelly fat Clay(with Sand) <br /> ca. <br /> 0 LL>_ 50 Organic Clay(with Sand or Gravel),Sandy organic Clay(with Gravel),Gravelly organic Clay(with <br /> OH Sand),organic Silt(with Sand or Gravel),Sandy organic Silt(with Gravel),Gravelly organic Silt <br /> with Sand <br /> Highly Organic Soils PT Peat and other highly organic soils <br /> Note: Percentages are by dry weight. Soil classifications based on some criteria that are not shown.Group Name items in parentheses may or may not apply, <br /> depending on percent of sand or gravel. <br /> Coarse Grained Soil Definitions Split-barrel,3-inch O.D.,2.43-inch I.D. <br /> Fraction Particle Dimension or U.S. <br /> Standard Sieve Size/No. <br /> Boulders Above 12" Split-barrel,2.5-inch O.D., 1.93-inch I.D. <br /> Cobbles 12"to 3" <br /> Standard Penetration Test(SPT),2.0-inch O.D., 1.375-inch I.D. <br /> Gravel <br /> coarse 3"to 3/4" <br /> fine 3/4"to No.4 Shelby Tube <br /> Sand <br /> -coarse No.4 to No. 10 <br /> -medium No. 10 to No.40 Disturbed sample <br /> -fine No.40 to No.200 <br /> No recovery <br /> Groundwater level during drilling <br /> CONDOR EARTH TECHNOLOGIES,INC. <br /> LOG LEGEND AND — Subsequent groundwater level <br /> SOIL CLASSIFICATION Note:O.D.=outside diameter I.D.= inside diameter <br /> CONDOR <br />