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� , Prokssional Service� s4ies <br /> GENERALNOTES <br /> SAMPLE IDENTIFICATION <br /> The Unified Soil Class'rfication System is used to identify soil unless otherwise noted. <br /> SOIL PROPERTY SYMBOLS <br /> N: Standard Penetration Value: Blows per foot of 140 pound hammer <br /> falling 30 inches on a standard cplit-spoon penetrometer. <br /> Ou: Unconfined compressive strength (ts�. <br /> Qp: Penetrometer value, unconfined compressire strength (tsfj. <br /> Mc: Water content (%). <br /> LL: Liquid IimR (%). <br /> PI: Plasticiry index (%). I <br /> bd: Natural dry densiry (pc�. <br /> 0: Apparent groundwa[er level at time noted after comple:ion. <br /> DRIILING ANQ SAMPLING SYMBOI_S <br /> SS: Split-Spoon - 1 3/8' I.D., 2' O:D. <br /> S8: Spilt-Barrel - 2 3/8' I.D., 3' O.D. <br /> ST: Shelby Tube - 3" O.D., excep[ where noted. <br /> BS: Bulk Sample. <br /> AU: Auger Sample. <br /> DB: Diamond Bit. <br /> C8: Carbide Bit. <br /> WS: Washed Sample. <br /> RELATIVE DENSIIY AND CONSISTFNCY CLASSIFICATION <br /> T'cRM (NON-COHESIVE SOILS) STANDARD PEVEfRATiON RESISTANCE <br /> Very Loose 4 or less <br /> Loose 4 to 10 <br /> Medium Dense 70 to 30 <br /> Dense 30 to 50 <br /> Very Dense Gver 50 <br /> TER"�i�COHESIVE SOILS) OU - �TSF�, <br /> Very Soft 0 - 0.25 <br /> gah 0.25 - 0.50 <br /> Medium S[iff 0.50 - 7.00 <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 Smm-0.6mm Silt 0.074 mm-0.00Smm <br /> Cobbles 8 in-3 in Medium Sand D.6mm-02mm Clay O.00Smm <br /> Gravei 3 in-5 mm Fine Sand 0.2mm-0.074mm <br />