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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% 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% 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, FAT CLAY NO.200 SIEVE 50%OR MORE U ORGANIC CH ORGANIC CLAY,ORGANIC SILT s HIGHLY ORGANIC SOILS PT PEAT LU NOTES: 0 U) 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. N N 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 2 a test data. z Project Number IlELSO� GEOTECHIIICAL No. Date Revision By CK o 1322621 Clark Garage 1 1/13/22 Original DPN DJO51 Development ASSOCIATES, In Soil Classification Chart - Woodinville Office Wenatoheeofflce ° Figure 4 17311-135th Ave.NE,A-500 105 Palouse St. Woodinville,WA 98072 Wenatchee,WA 98801 J ww.nelsongeotech.com (425)486-1669/Fax:481-2510 (509)665-7696/Fax:665-7692 =