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UNIFIED SOIL CLASSIFICATION SYSTEM <br />MAJOR DIVISIONS <br />GROUP <br />SYMBOL <br />GROUP NAME <br />CLEAN <br />GW <br />WELL -GRADED, FINE TO COARSE GRAVEL <br />COARSE- <br />GRAVEL <br />GRAVEL <br />GP <br />POORLY -GRADED GRAVEL <br />GRAVEL <br />GM <br />SILTY GRAVEL <br />GRAINED <br />MORE THAN 50 % <br />OF COARSE FRACTION <br />GC <br />CLAYEY GRAVEL <br />COILS <br />RETAINED ON <br />NO.4SIEVE <br />WITH FINES <br />SAND <br />CLEAN <br />SW <br />WELL -GRADED SAND, FINE TO COARSE SAND <br />SP <br />POORLY GRADED SAND <br />SAND <br />MORE THAN 50 % <br />RETAINED ON <br />NO. 200 SIEVE <br />MORE THAN 50 % <br />OF COARSE FRACTION <br />PASSES NO. 4 SIEVE <br />SAND <br />SM <br />SILTY SAND <br />WITH FINES <br />SC <br />CLAYEY SAND <br />FINE - <br />SILT AND CLAY <br />INORGANIC <br />ML <br />SILT <br />CL <br />CLAY <br />GRAINED <br />LIQUID LIMIT <br />LESS THAN 50 % <br />ORGANIC <br />OL <br />ORGANIC SILT, ORGANIC CLAY <br />SOILS <br />SILT AND CLAY <br />INORGANIC <br />MH <br />SILT OF HIGH PLASTICITY, ELASTIC SILT <br />MORE THAN 50 % <br />PASSES <br />NO. 200 SIEVE <br />LIQUID LIMIT <br />50 % OR MORE <br />CH <br />CLAY OF HIGH PLASTICITY, FLAT CLAY <br />ORGANIC <br />OH <br />ORGANIC CLAY, ORGANIC SILT <br />HIGHLY ORGANIC SOILS <br />PT <br />PEAT <br />NOTES <br />1) Field classification Is based on visual SOIL MOISTURE MODIFIERS: <br />examination of soil In general Dry - Absence of moisture, dusty. dry to <br />accordance with ASTM D 2488-93. the touch <br />2) Soil classification using laboratory tests Moist - Damp, but no visible water. <br />is based on ASTIv1 D 2488-93. <br />Wet - Visible free water or saturated, <br />3) Descriptions of soil density or usually soil Is obtained from <br />consistency are based on below water table <br />interpretation of blowcount data. <br />visual appearance: of soils, and,or <br />lest data. <br />Project Number <br />859212 <br />Fox Residence <br />Soil Classificatioi{ Chart <br />NELSON IATES, I NICAL <br />/ _ ASSOCIATES°INC. <br />N G A <br />GEOTECHNICAL ENGINEERS 8, GEOLOGISTS <br />No. <br />Date <br />Revision <br />By <br />CK <br />I <br />r{:=,,: a,9mI <br />oPH <br />eo <br />Figure 6 <br />