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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> %0 `'W1 MAJOR DIVISIONS LTR DESCRIPTION MAJOR DIVISIONS LTR <br /> DESCRIPTION <br /> ow 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 fine <br /> GRAVEL CP Pooiy—graded grovels or gravel SILTS sands or clayey silts with slight <br /> AND <br /> sand mixture, little or no fines. AND iasticit . <br /> GRAVELLY Silt CLAYS inorganic clays or low to medium <br /> SOILS Gid Y grovels, gravel—sand—silt LL <50 CL Plasticity, gravellyclays, <br /> mixtures. clays, leyandayssandy <br /> COARSE GC <br /> Clayey grovels, gravel—sand—tlay Organic silts and organic silt—clays <br /> GRAINED mixtures. FINE OL of low plasticity. <br /> SOILSFSANDY <br /> Weil—graded sands or gravel) GRAINED <br /> SW y SOILS Inorganic clays or low to medium <br /> sands, little or no fines MH plasticity, gravelly clays, sandy <br /> Poorly—graded sands or gravelly 51LT5 clays, lean days. <br /> SP sand mixture, little or no fines. AND Inorganic clays of high plasticity, <br /> CLAYS CH fat clays. <br /> Sµ Silty sands, sand—silt mixtures. LL >50 <br /> L' OH Organic clays of medium to high <br /> plasticity. <br /> SC Clayey sands, sand—silt mixtures. HIGHLY ORGANIC PT <br /> SOILS peat and other highly organic soils. <br /> Sand pack <br /> t. I Depth through which <br /> I sampler is driven. <br /> ■ Bentonite annular seal <br /> iRelatively undisturbed sample <br /> TT Neat cement annular seal <br /> �Y. Missed sample <br /> ❑ Blank PVC <br /> V Ground water level <br /> observed in boring <br /> Machine—slatted PVC <br /> S-10 Sample number <br /> PVC Centralizer <br /> PID Photoienization 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 /> UNIFIED SOIL CLASSIIFICATION SYSTEM PLATE <br /> ��--� AND SYMBOL KEY <br /> ' - - 'VArm ARCO Service Station No. 2130 <br /> RLE NO. 7906 North EI Darado Street 3 <br /> PROJECT NO. 30003 0003G6A Stocklon, Callitamia <br /> i. <br />