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SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISION GROUP LETTER GROUP NAME <br /> SYMBOL SYMBOL <br /> • <br /> • <br /> GRAVEL WITH k • & GW WELL-GRADED GRAVEL with or without sand <br /> Ij <br /> Ij <br /> <_5%FINES ° <br /> o Q° °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 •w GW-GC WELL-GRADED GRAVEL WITH CLAY <br /> GRAVEL WITHI&V <br /> COARSE and with or without sand <br /> FRACTION BETWEEN 5% <br /> RETAINED ON AND 15%FINES o Qo o GP-GM POORLY GRADED GRAVEL WITH SILT <br /> and with or without sand <br /> NO.4 SIEVE <br /> o Q° GP-GC POORLY GRADED GRAVEL WITH CLAY <br /> and with or without sand <br /> o ° o GM SILTY GRAVEL and with or without sand <br /> COARSE GRAVEL WITH <br /> GRAINED _>15%FINES <br /> GC CLAYEY GRAVEL and with or without sand <br /> SOILS WMA <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 WITHSW-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 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 /> SILT _ <br /> SOILS AND 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 /> , <br /> HIGHLY ORGANIC SOILS IL <br /> PT PEAT <br /> LEGEND <br /> KEY TO LOGS AND SOIL <br /> CLASSIFICATION <br /> DATE: 5/24/20061ANALYST:Olesone FIGURE: <br /> D-1 <br /> From Science to SolutOns SHEET 2 OF 2 <br />