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GRAPHIC LOG SYMBOLS <br />i~t cussnKAraut srr~o~ <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 30 INCHES. <br />THE SAMPLER IS DRIVEN IB INCHES AND THE NUMBER <br />OF BLOWS IS RECORDED FOR EACH 6 INCH INTERVAL. <br />THE NUMBER OF BLOWS REQUIRED TO INCREASE <br />PENETRATION FROM 6 TO IB INCHES CONSTITUTES THE <br />STANDARD PENETRATION RESISTANCE (N), <br />DENSITY OF GRANULAR SOILS CONSISTENCY OF COHESIVE SOILS <br />trswur s[uu~n tturn[It u~et.luul <br />DESIGNATION BLOWS PER F00T CONSISTENCY BLOWS PER F00T <br />VERY LOOSE 0-4 VERY SOFT 0-2 <br />LOOSE 4-10 SOFT 2-4 <br />MEDIUM DENSE 10-30 MEDIUM STIFF 4-B <br />DENSE 30-50 STIFF B-IS <br />VERY DENSE OVER 50 VERY STIFF IS-30 <br /> HARD OVER 30 <br />DESCRIPTIVE TERMS <br />GRANULAR PORTION <br />09'0- 15 9'o TRACE <br />1590-309'0 SOME <br />309'0' S0°Jo USE SUBJECT MATERIAL AS MODIFIER <br />FlNE~aRAIPED PORTION <br />0%" S°,6 TRACE <br />5%" 129'o SOME <br />129'0' SO% USE SUBJECT MATERIAL AS MODIFIER <br />SAMPLING SYMBOLS <br />SOIL SAMPLING CORE RUN <br />~-STANDARD PENETRATION TEST <br />®-"LNDISTURBED" SAMPLE USING <br />THIN-WALLED SAMPLER- <br />("SHELBY TUBE°), <br />~orcr+ us[ useo row „ <br />r~sus~ cuwiriuTroO ~- UNDISTURBED SAMPLE USING <br />OTHER SAMPLER <br />® BAG OR BULK SAMPLE <br />FROM AUGER <br />KEY TO LAGS OF BORINGS <br />PERCENT CORE RECOVERY <br />f ROD (ROCK QUALITY <br />95 DESIGNATpN-PERCENTAGE <br />6T - OF CORE RECOVERED IN <br />LENGTHS GREATER THAN <br />FOUR INCHES). <br />T <br />I PACKER TEST SECTION <br />I <br />1 <br />52 ~ MEASURED PERMEABILITY <br />I (IN FEET/YEAR,UNLESS <br />1 NOTED OTHERWISE). <br />GEO-HYDRO COHSULTIHG,IlIC. <br />~r uw[tt us[ us[o <br />/01 WDA~TOfT <br />T[fT tt~[[TICaTIaI <br />