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GENERAL NOTES DRILLING & SAMPLING SYMBOLS: 55 s Split Spoon - l 313" LO., 2" O.D. Unless otherwise noted ST Shelby Tube - 2: O.D., Unless otherwise noted PA Power Auger 08 Diamond Bit - NX, BX, AX AS s Auger Sample ,JS s Jar Sample VS Vane Shear OS . Osterberg Sample- - 3" Shelby Tube H5 . Hollow Stem Auger WS : Wash Sample FT : Fish Tail RB : Rock Bit B5 Bulk Sample PM : -lYessuremeter Test, In-51tu GS . Giddings Sampler Standard W Penetrations Blows per foot o: a 140 pound hammer falling 30 inches en a 2 Inch O.D. split spoon sampler, except where otherwise noted. WATER LEVEL MEASURE-MENT SYMBOLS: WL s Water Level WC,I : Wet Cave In WS t While Sampling Da : Dry Cave in WD : While Drilling SCR : Before Casing Removal AB : After Boring ACR : After Casing Removal Water levels indicated on the boring iogs are the levels measured in the boring at the :Imes indicated. In pervious, soils, the indicated elevations are considered reliable groundwater levels. in impervious solLs, the accurate determination ed ground water elevations may not be possible, even after several days of observations; additional evidence of ground water elevations must be sought. GRADATION DESCRIPTION do TERMINOLOGY: Coarse Grainer! or Granular Solo have more than 30% of their dry weight retained on a 0200 sieve; they are described as: boulder% cobbles, gravel or sand. Fine (;rained soils nave less d►an 30% of -heir dry weight retained on a 0200 sieve; they are described as: Mays or clayey silts if they are cohesive and silts if they are non -cohesive. In addition to gradation, granular soils are definntd on the basis o. their relative in -place density and fine grained soils on the basis Of their strength or consistency and their Plasticity. .Major Descriptive Term Component Of Components Also Percent Of Of sarnole Nz�tgr Present in Samoie Ory Weitnt boulders Over E in. (200 mm) Trace 1 - 9 Cobbles 8 inches to 3 inches Little 10 - l9 (200 mm to 79 mm) Gravel 3 inches to 04 sieve some 20 - 34 (75 mm to 4.76 mm) Sand d4 to 0200 sieve And 33 - 30 (4.76 mm to 0.07+ mm) Slit Passing 0200 sieve (0.074 mm to 0.003 mm) Clay Smaller than 0.005 mm CONSISTENCY OF COHESIVE SOILS: Unconfined Compressive Strength, Qu, tsf Consistency RELATIVE DENSrTY OF GRANULAR SOILS: N - Blocs per It. Relative Density < 0.23 Very. Soft 0 - 3 Vern Loose 0.23 - 0.49 Soft 4 - 9 Loose 0.50 - 0.99 5ledlum (Firm) 10 - 29 ;Medium Dense 1.00 - 1.99 S:if! 30 - 49 Dense 2.00 - 3.99 Very Stlif 30 - 80 Very Dense 4.00 - 8.00 Hard 30+ Ex:remely Dense > 3.00 Very Hard STS CONSULTANTS LTD.