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d <br /> 3" <br /> UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISIONS LTR DESCRIPTION MAJOR DIVISIONS LTR DESCRIPTION <br /> G'N Well—graded gravels or gravel and inorganic silts and very fine sands, <br /> son=s' little or no fines. ML rock !lour, silty or clayey fine <br /> raded grovels or ravel SILTS sands or clayey silts with slight <br /> GRAVd rp PoorfY-9 g AND lastic€b. <br /> Ati� sand mixture, little or no fines. CLAYS Inorganic clays or low to medium <br /> GRAVELLY Silty gravels, gravel—sand—silt LL <50 CL plasticity. gravelly clays, sandy <br /> SOILS au mixtures. clays, lean clays. <br /> COARSE Clayey gravels, gravel—sand—clay OL Organic silts and organic silt-clays <br /> mixtures. FINE of low plasticity. <br /> GRAINED GRAINED <br /> SOILS Well—graded sonde or gravelly SOILSInorganic clays or low to medium <br /> sands. little or no Sines. )AH plasticity, gravelly clays, sandy <br /> SAND Poorly—graded sands or gravelly SIDS clays, lean clays. <br /> AND sand mixture, little or no fines. ANDCN Inorganic clays of high p!asticlty. <br /> SANDY CLAYS fat clays. <br /> i� SOILSSU Silty sands, sand—silt mixtures. LL >50 OH Organa clays of medium to high <br /> plasticity. <br /> SC Clayey sands, sand—silt mixtures. HIGH SOIOISRGANIC p[ Peat and other highly organic soils. <br /> Sand pack <br /> Depth 'through which <br /> sampler is driven. <br /> Sentonite annular seal <br /> i Relatively undisturbed sample <br /> r-� Neat cement annular seal <br /> -' 3 Missed sample <br /> a <br /> € ❑ Blank PVC <br /> ® Ground water level <br /> - observed in baring <br /> Machine—slotted PVC <br /> S-10 Sample number <br /> PVC Centralizer <br /> PID Photoionization detector reading <br /> BLOPI/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 <br /> NINE_BORING AT THE TIME OF DRILLING ONLY. <br /> UNIFIED SOIL CLASSIFICATION.SV3TEM PLATT= <br /> AND SYMBOL KEY <br /> ARCO Service Station No.548 P04 <br /> 1612 hemmer Lena <br /> PROJECT NO. 00004-2 Stockton, CelMornle <br />