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UNIFIED SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS GROUP GROUP NAME SYMBOL CLEAN GW WELL-GRADED, FINE TO COARSE GRAVEL COARSE - GRAVEL GRAVEL GP POORLY-GRADED GRAVEL GRAINED MORE THAN 50 �io GRAVEL OF COARSE FRACTION GM SILTY GRAVEL RETAINED ON SOILS NO. 4 SIEVE WITH FINES GC CLAYEY GRAVEL SAND CLEAN SW WELL-GRADED SAND, FINE TO COARSE SAND SAND SP POORLY GRADED SAND MORE THAN 50 % RETAINED ON MORE THAN 50 °/a NO. 200 SIEVE OF COARSE FRACTION SAND SM SILTY SAND PASSES NO. 4 SIEVE WITH FINES SC CLAYEY SAND FINE - SILT AND CLAY ML SILT INORGANIC GRAINED LIQUID LIMIT CL CLAY ' LESS THAN 50 % SOILS ORGANIC OL ORGANIC SILT, ORGANIC CLAY ' SILT AND CLAY MH SILT OF HIGH PLASTICITY, ELASTIC SILT MORE THAN 50 % INORGANIC PASSES LIQUID LIMIT CH CLAY OF HIGH PLASTICITY, FLAT CLAY ' NO. 200 SIEVE 50 % OR MORE ORGANIC OH ORGANIC CLAY, ORGANIC SILT � HIGHLY ORGANIC SOILS PT PEAT NOTES: ' 1) Field classification is based on visual SOIL MOISTURE MODIFIERS: examination of soil in general accordance with ASTM D 2488-93. Dry - Absence of moisture, dusty, dry to � the touch � , 2) Soil classification using laboratory tests � is based on ASTM D 2488-93. Moist - Damp, but no visible water. 3 m � 3) Descriptions of soil density or Wet - Visible free water or saturated, � ' consistency are based on usually soil is obtained from � interpretation of blowcount data, below water table � � visual appearance of soils, and/or Q test data. N ' Project Number NELSON GEOTECHNICAL No. Date Revision By CK � ASSOCIATES� INC. o 867612 Alhussaini Residence N A , ,z�3�,2 Original �se KMS m ' Soil Classification Chart GEOTECHNICAL EN6INEERS & GEOL061STS � Figure 5 1I311-135�hAveNEA-500 SnohomishCounty(425�33�-1fi69 � Woodinville, WA980I2 Wenatc�aelGhelan�509�665]6B6 Q (425) 486-166B / Fa� 48t-2510 .nelsongeo�ech.com U` Z