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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 ORGANIC OH ORGANIC CLAY,ORGANIC SILT N , a- e HIGHLY ORGANIC SOILS PT PEAT o NOTES: W C 0 1) Field classification is based on visual SOIL MOISTURE MODIFIERS: r examination of soil in general accordance with ASTM D 2488-93. Dry-Absence of moisture,dusty,dry to 0 the touch N 2) Soil classification using laboratory tests K is based on ASTM D 2488-93. Moist-Damp,but no visible water. e , 3) Descriptions of soil density or Wet-Visible free water or saturated, consistency are based on usually soil is obtained from below water table interpretation of blowcount data, o visual appearance of soils,and/or �, test data. 0 LL Project Number NELSON GEOTECHNICAL No. Date Revision 'By CK 15, 1040718 Zillah Street Residential N'4.- A -.� ASSOCIATES, INC. 1 6/7/18 Original DPN LSB Development Inflltr/atlOn{ GEOTECHNICAL ENGLNE.ERS.&.GEOLOGISTS z Soil Classification Chart �41ootl1nvilbomca East Wenatchee Office c° Figure 4 17011-1351h Ave.NE,A-500 55261nd Aeo Lane,8#2 8 Woodinville,WA 98072 East Wenatchee,WA 98802 �y (425)486-1669/F.481-2510 www.nelsongeotech.wm (509)665.7696/Fax:885.7692