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Unified Soil Classification System <br /> GROUP GROUP NAME <br /> MAJOR DIVISIONS SYMBOL <br /> GRAVEL CLEAN GRAVEL OW WELL-GRADED GRAVEL FINE TO COARSE GRAVEL <br /> COARSE <br /> GRAINED MORE THAN 50%OF GP POORLY-GRADED GRAVEL <br /> COARSE FRACTION <br /> SOILS RETAINED ON NO 4 GRAVEL <br /> SIEVE WITH FINES GM SILTY GRAVEL <br /> GC CLAYEY GRAVEL <br /> MORE THAN 50% <br /> RETAINED ON SAND CLEAN SAND <br /> SW WELL-GRADED SAND,FINE TO COARSE SAND <br /> number 200 SIEVE <br /> •SP POORLY-GRADED SAND <br /> FINE_ MORE THAN 50%OF <br /> COARSE FRACTION SAND <br /> PASSES NO.4 SIEVE WITH FINES SM SILTY SAND <br /> SC . CLAYEY SAND <br /> SILTAND CLAY INORGANIC ML SILT <br /> LIQUID LIMIT CL CLAY <br /> GRAINED LESS THAN 50% <br /> SOILS ORGANIC OL ORGANIC GILL ORGANIC CLAY <br /> MORE THAN 50% SILT AND CLAY INORGANIC <br /> PASSES NO.200 SIEVE MH SILT OF HIGH PLASTICITY,ELASTIC SILT <br /> LIQUID LIMIT CH CLAY OF HIGH PLASTICITY,FAT CLAY <br /> 50%OR MORE .,... <br /> - - <br /> ORGANIC OH ORGANIC CLAY.ORGANIC SILT <br /> HIGHLY ORGANIC SOILS PT PEAT <br /> NOTES: <br /> SOIL MOISTURE.MODIFIERS. <br /> 1) Field classification is based on Dry-Absence of moisture,dusty,dry <br /> visual examination of soil in general to the touch <br /> accordance with ASTM D 2488-83. <br /> Moist-Damp,but no visible water <br /> 2) Soil classification using laboratory <br /> tests is based on ASTM D 2487-83. <br /> Wet-Visible free water or saturated, <br /> usually soil is obtained from <br /> 3) Descriptions of soil density or <br /> below water table <br /> consistency are based on <br /> interpretation of blowcount data, <br /> visual appearance of soils,and/or <br /> test data. <br /> 1.121: Figure 3 <br /> PM: RBP <br /> March 2018 Unified Soil Classification System <br /> ROBINSON' <br /> NOBLE- 3279-001A Mr. John Kennedy: 3815 Shore Avenue, Everett <br />