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SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISION GROUP LETTER GROUP NAME <br /> t SYMBOL SYMBOL <br /> • <br /> .'• •. GW WELL-GRADED GRAVEL with or without sand <br /> GRAVEL WITH <br /> <_5%FINES ° <br /> o( ° � GP POORLY GRADED GRAVEL with or without sand <br /> GRAVEL WITH .,• . GW-GM WELL-GRADED GRAVEL WITH SILT <br /> MORE THAN and with or without sand <br /> 50%OF GRAVEL WITH •'' GW-GC WELL-GRADED GRAVEL WITH CLAY <br /> COARSE and with or without sand <br /> FRACTION BETWEEN 5% <br /> RETAINED ON AND 15%FINES o o GP-GM POORLY GRADED GRAVEL WITH SILT <br /> and with or without sand <br /> NO.4 SIEVE <br /> GP-GC POORLY GRADED GRAVEL WITH CLAY <br /> ' and with or without sand <br /> OT <br /> o <br /> COARSE GRAVEL WITH GM SILTY GRAVEL and with or without sand <br /> GRAINED >15%FINES <br /> ' GC CLAYEY GRAVEL and with or without sand <br /> SOILS <br /> WITH <br /> LESS THAN SW WELL-GRADED SAND with or without gravel <br /> SAND WITH <br /> 50%FINES <5%FINES <br /> SP POORLY GRADED SAND with or without gravel <br /> SAND WITH SW-SM WELL-GRADED SAND WITH SILT with or without gravel <br /> MORE THAN <br /> 50%OF SAND WITH SW-SC WELL-GRADED SAND WITH CLAY with or without gravel <br /> ' COARSE BETWEEN 5% <br /> GRACTION AND 15%FINES SP-SM POORLY GRADED SAND WITH SILT with or without gravel <br /> PASSING <br /> NO.4 SIEVE SP-SC <br /> POORLY GRADED SAND WITH CLAY with or without gravel <br /> SM SILTY SAND with or without gravel <br /> SAND WITH <br /> >15%FINES <br /> ' SC CLAYEY SAND with or without gravel <br /> ML SILT with low plasticity <br /> and with or without sand or gravel <br /> ' LIQUID LIMIT — — CL LEAN CLAY with low plasticity <br /> FINE <50 and with or without sand or gravel <br /> GRAINED — _ _ OL ORGANIC SILT with low plasticity <br /> SOILS AND SILT = = and with or without sand or gravel <br /> WITH CLAY MH ELASTIC SILT with low plasticity <br /> ' MORE THAN and with or without sand or gravel <br /> 50%FINES LIQUID OLIMIT CH FAT CLAY with low plasticity <br /> and with or without sand or gravel <br /> — OH ORGANIC SILT OR CLAY with low plasticity <br /> and with or without sand or gravel <br /> HIGHLY ORGANIC SOILS PT PEAT <br /> ' LEGEND <br /> KEY TO LOGS AND SOIL <br /> CLASSIFICATION <br /> ' DATE: 5/24/200 ANALYST:Olesone FIGURE: <br /> C-1 <br /> From Science to Solutions SHEET 2 OF 2 <br />