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GRAPHIC LOG SYMBOLS <br />>~ CLtISIFK~TION SYMOL <br />DENSITY AND CONSISTENCY <br />BASED ON <br />STANDARD PENETRATION TESTS <br />STANDARD PENETRATION RESISTANCE IS THE NUMBER <br />OF BLOWS REQUIRED TO DRIVE A STANDARD 2 INCH <br />O.D. SPLIT BARREL SAMPLER 12 INCHES USING A 140 <br />POUND HAMMER FALLING FREELY THROUGH 301NCHES. <br />THE SAMPLER IS DRIVEN IB INCHES AND THE NUMBER <br />OF BLOWS IS RECORDED FOR EACH 6 INCH INTERVAL. <br />7NE NUMBER OF BLOWS REQUIRED TO INCREASE <br />PENETRATION FROM 6 TO 18 INCHES CONSTITUTES THE <br />STANDARD PENETRATION RESISTANCE (N), <br />DENSITY OF GRANULAR SOILS CONSISTENCY OF COHESIVE SOILS <br />nu[Lr ^[u~ttn tlurn[e u~cu~uL[I <br />DESIGNATION BLOWS PER F00T CONSISTENCY BLOWS PER FOOT <br />VERY LOOSE 0-4 V RY SOFT 0-2 <br />LOOSE 4-10 SOFT 2-4 <br />MEDIUM DENSE 10-30 MEDIUM STIFF 4-8 <br />DENSE 30-50 STIFF 8-IS <br />VERY DENSE OVER SO VERY STIFF IS-30 <br /> HARD OVER 30 <br />DESCRIPTIVE TERMS <br />GRANULAR PORTION <br />0%IS% TRACE <br />159'0-30% SOME <br />309io- 509'o USE SUBJECT MATERIAL AS MODIFIER <br />FlNE~.RAINED PORTION <br />0%- S% TRACE <br />5%- 129'o SOME <br />12°Yo 50% USE SUBJECT MATERIAL AS MODIFIER <br />SOIL SAMPLING <br />SAMPLING SYMBOLS <br />~3TANDARD PENETRATION TEST <br />®"LNDISTURBED~~ SAMPLE USING <br />THIN-WALLED SAMPLER- <br />(°SMELBY TUBE~~). <br />LOW[II GAS[ Ut[D -011 <br />VI[UAL CL~YI-IGTIOM ~"UNDISTURBED~~ SAMPLE USING <br />OTHER SAMPLER <br />® BAG OR BULK SAMPLE <br />FROM AUGER <br />KEY TO LOGS OF BORINGS <br />CORE RUN <br />PERCENT CORE RECOVERY <br />f RO.D (ROCK QUALITY <br />B5 DESIGNATpN-PERCENTAGE <br />67 - OF CORE RECOVERED IN <br />LENGTHS GREATER THAN <br />FOUR INCHESI. <br />T <br />I PACKER TEST SECTION <br />I <br />I <br />~ 52 -MEASURED PERMEABILITY <br />I (IN FEET/YEAR,UNLESS <br />1 NOTED OTHERWISE). <br />GEO-HYDRO CONSULTING,IHC. <br />PLATE <br />#I ur+[^ us[ us[o <br />row wauro~Y <br />T[!T CL~lf111GTI0M <br />