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Prokssional Snvice InL,birs =— <br /> GENERAL NOTES <br /> SAMPLE IDENTIFICATION <br /> The Unified Soil Classification System is used to identify sail unless otherwise noted. <br /> SOIL PROPERTY SYMBOLS <br /> N: Standard Penetratlon Value: Blows per foot of 140 pound hammer <br /> falling 30 Inches on a standard split-spoon penetrometer. <br /> Qu: Unconfined compressive strength (tsq. <br /> Op: Penetrometer value, unconfined compre=sive strength (tsf). <br /> Mc. Water content (%). <br /> LL: Uquid Ilmff (%). <br /> PI: Plasticity Index (%). <br /> bd: Natural dry density (pcf). <br /> 0: Apparent groundwater level at time noted after completion. <br /> DRILLING AND SAMPLING SYMBOLS <br /> SS: SpIIt-Spoon - 1 3/8' I.U., 2' O.D. <br /> SB: Spilt-Barrel - 2 3/8' I.D., 3' O.D. <br /> ST: Shelby Tube - 3' O.D , except where noted. <br /> BS: Bulk Sample. <br /> AU: Auger Sample. <br /> i DB: Diamond Bit. <br /> CB: Carbide Bk. <br /> WS: Washed Sample. <br /> RELATIVE DENSITY AND CONSISTENCYCLASSIFICATION <br /> . <br /> TERM (NON-COHESIVE SOILS] STANDARD PENETRATION RESISTANCE <br /> Very Loose 4 or less <br /> Loose 4 to 10 <br /> Medium Dense 10 to 30 <br /> Dense 30 to 50 <br /> Very Dense Over 50 <br /> TERM (COHESIVE SOILS) S� <br /> Very Soft 0 - 0.25 <br /> Soft 0.25 - 0.50 <br /> Medium Stiff 0.50 - 1.00 <br /> Stiff 1.00 - 2.00 <br /> Very Stiff 2.00 - 4.00 <br /> Hard 4.00 + <br /> PARTICLE SIZE <br /> Boulders 8 in + Coarse Sand 5mm-0.6mm Silt 0.074 mm-0.005mm <br /> Cobbles 8 in-3 in Medium Sand 0.6mm-02mm Clay 0.005mm <br /> Gravel 3 in-5 mm Fine Sand 0.2mm-0.074mm <br />