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UNIFIED SOIL CLASSIFICATION SYSTEM <br />MAJOR DIVISIONS GROUP GROUP t�AME <br />SYMBOL <br />CLEAN GW WELL-GRADED, FINE TO COARSE GRAVEL <br />COARSE- GRAVEL <br />GRAVEL GP POORLY-GRADED GRAVEL <br />GRAINED MORE THAN 50 °io GRAVEL <br />OF COARSE FRACTION GM SILTY GRAVEL <br />RETAINED ON <br />SOILS NO. 4 SIEVE WITH FINES <br />GC CLAYEY GRAVEL <br />SAND CLEAN SW WELL-GRADED SAND, FINE TO COARSE SAND <br />SAND <br />SP POORLY GRADED SAND <br />MORE THAN 50 °/a <br />RETAINED ON MORE THAN 50 % <br />NO. 200 SIEVE OF COARSE FRACTION SAND SM SILTY SAND <br />PASSES NO. 4 SIEVE <br />WITH FINES SC CLAYEY SAND <br />FINE - SILT AND CLAY ML S�LT <br />INORGANIC <br />GRAINED LIQUID LIMIT CL CLAY <br />LESS THAN 50 °/a <br />SOILS ORGANIC OL ORGANIC SILT, ORGANIC CLAY <br />SILT AND CLAY MH SILT OF HIGH PLASTICITY. ELASTIC SILT <br />MORE THAN 50 % INORGANIC <br />PASSES LIQUID LIMIT CH CLAY OF HIGH PLASTICITY, FLAT CLAY <br />NO. 200 SIEVE 50 % OR MORE <br />ORGANIC OH ORGANIC CLAY, ORGANIC SILT <br />HIGHLY ORGANIC SOILS PT PEAT <br />NOTES: <br />1) Field classification is based on visual SOIL MOISTURE MODIFIERS: <br />examination of soil in general <br />accordance with ASTM D 2488-93. Dry - Absence of moisture, dusty, dry to <br />the touch <br />� 2) 5oil classification using laboratory tests <br />is based on ASTM D 2488-93. Moist - Damp, but no visible water. <br />3) Descriptions of soil density or Wet - Visible free water or saturated, <br />� consistency are based on usually soil is obtained from <br />interpretation of blowcount data, below water table <br />visual appearance of soils, and/or <br />test data. <br />� PfOJ@Ct NUfT1bEi NELSON GEOTECHNICAL No. Date Revision By CK <br />870113 Packer Property N�A ASSOCIATES� INc. � 2/12113 cJriginal �s6 KMs <br />Soil Classification Chart GEOTECHNICAL EN6INEERS & GEOLOGISTS <br />F�('� u re 4 17311-1351h q�re. NE. A-500 Snohomis� County (925) 337-16fi9 <br />`.,,7' WooEinville, WA 88072 Wenatchea/Chelan (SOB) 7842756 <br />(425) GB6-1869/ Fax 481-Y510 www.nelsangeolach.com <br />