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► <br /> UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISIONS LTR DESCRIPTION MAJOR DIVISIONS LTR DESCRIPTION <br /> GW Well—graded gravels or gravel and Inorganic silts and very fine sands, <br /> sand mixtures little or no fines. ML rock flour silty or clayey tine <br /> Poorly-graded gravels or gravel SILTS sands or clayey silts with slight <br /> [;RAVEL op sand mixture, little or no fines AND Plasticity <br /> AND <br /> CLAYS Inorganic clays or low to medium <br /> GRAVELLY Silty gravels gravel—sand—silt <br /> I �� GM Silty G50 CL plaeticiiy, gravelly clays, sandy <br /> mixtures clays lean cfays <br /> COARSE GC Clayey gravels gravel—sand—clay Organic silts and Organic silt—clays <br /> GRAINED mixtures FINE DL of low plasticity <br /> SOILS 5Yr Well—gradedsandsBonds or gravelly SOILS Inorganic clays or law to medium <br /> sands little or no fines NH plasticity, gravelly clays sandy <br /> SAND Poorly-graded sands or gravelly SILTS days, lean clays <br /> AND SP sand mixture little or no fines AND Inorganic clays of high plasticity <br /> l SANDY CLAYS CH fat days <br /> SOILS Sp Silty sands, sand—silt mixtures LL >50 OH Organic clays of medium to high <br /> plasticity <br /> SC Clayey sands, sand—silt mixtures HIGHLY OI O�GANIC PT peat and other highly organic 90119 <br />' D Sand pack <br /> Depth through which <br /> sampler is driven ■ <br /> Bentonite annular seal <br /> i Relatively undisturbed sample <br /> Missed sample <br /> Neat cement annular seal <br /> ❑ <br /> ❑ Blank PVC <br /> V Ground water level <br /> = observed In baring <br /> © Machine—slotted PVC <br /> S-10 Sample number <br /> PVC Centralizer <br /> PID Photolonizatlon detector reading <br /> BLOW/FT REPRESENTS THE NUMBER OF BLOWS OF A <br /> 140—POUND HAMMER FALLING 30 INCHES TO DRIVE <br /> THE SAMPLER THROUGH THE LAST 12 INCHES OF AN <br /> 18 INCH PENETRATION <br /> DASHED LINES SEPARATING UNITS OF THE LOG <br /> REPRESENT APPROXIMATE BOUNDARIES ONLY <br /> ACTUAL BOUNDARIES MAY BE GRADUAL LOGS <br /> REPRESENT SUBSURFACE CONDITIONS IN THE <br /> BORING AT THE TIME OF DRILLING ONLY <br /> =MRAWARWAFWAVOW <br /> —`-AMUNIF® SOIL CLASSIFICATION SYSTEM PLATE <br /> A1�1 SYMBOL KEY <br /> ARCO Service Station No. 760 3 <br /> FILE No 225 South Cherokee Lane <br /> PROJECT NO. 38048 8048G15A Lodi, Cagtoflllle <br />