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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> d MAJOR DIVISIONS <br /> JTR DESCRIPTION MAJOR DIVISIONS LTR <br /> DESCRIPTION <br /> l-graded grovelsor grovel and Inorganic silts and very fine sands, <br /> d mixtures, little or no f€nes ML rock dour, slaty or clayey fine <br /> CFtAVEL rly-graded gravels or gravel SILTS sands or clayey silts with slight <br /> ANOd mixture, little or no fines. AND lasticit . <br /> GRAVELLYixtures.gravels, gravel-sand-silt LL <50 CL CLAYS Inorganic clays or low to medium <br /> SOILS Gil mplastlelty, gravelly clays, sandy <br /> lztclays, lean cloys. <br /> COARSE GG Clayey gravels, gravel-sand-clay O <br /> rganic silts and organic silt-clays <br /> GRAINED mixtures. FINEof low plastlry. <br /> SOILS Well-graded sands or gravelly GRAINED <br /> ganic cloys or low to medium <br /> sands, little a no Fines sticity, gravelly clays, sandy <br /> SAND r AND 5? poorly-graded sands or gravelly a, lean days. <br /> SANDY sand mixture, little or no fines. clays of high plasticity, <br /> SOilS gN Silty sands, sand-silt mixtures. <br /> OH Organic clays of medium to high <br /> plastleity. <br /> SC Clayey sands, sand-silt mixtures. HIGHLY ORGANIC <br /> SOIL5 PT Peat and other highly organic soils. <br /> Depth through which Sand pack <br /> I sampler is driven. <br /> ■i Relatively undisturbed sample Bentonite annular seal <br /> TT �� Neat cement annular seal <br /> 5Y. Missed sample <br /> ❑V Ground water level Blank PVC <br /> observed in boring <br /> ©5-10 Sample number Machine—slotted PVC <br /> PID Photoionization detector reading PVC Centralizer <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 /> --__ UNIFIEDSOIL CLASSIFICATION SYSTEM PLATE <br /> :� =SA AND SYMBOL KEY <br /> ARCO Service Station No. $48 <br /> PROJECT NO. 3000 4 NO. 1612 Hammer Lane <br /> o004D4A Stockton, Caliiornta <br /> t <br />