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�i <br /> UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISIONS LTR DESCRIPTION MAJOR DIVISIONS LTR DESCRIPTION <br /> GW Wall-graded gravels ar grovel and Isar;mic silts and very fine sands, <br /> sand mixture n, little or na fines. ML rock flour, silty or clayey fine <br /> Poorly-graded ravels or ravel SILTS sands or clayey silts with slight <br /> a 9 9 lasticlly. <br /> LAND T sand mixture, lithe or no fines. CLAljAYS <br /> �- w <br /> . µd CLAYS Inorganic clays or low to medium <br /> GRAVELLY GFa silly grovels, gravel-sand-silt LL CSO CL. ptosti6ty, gravelly cloys, sandy <br /> SOILSmixtures, clays, lean clays. <br /> Clayey gravels, gravel-fond-clay OL Organic silts end organic silt-clays <br /> COARSE <br /> 6o mixtures. FINE of low plasticity. <br /> GRAJIJtAENE� GRAINED <br /> SOILS Well-graded Banda or gravelly Inorganic cloyagran or low , medium <br /> sande, IIttle or no fines. SOILS MH clays, to gravelly clays, sandy <br /> SAND SP Poorly-graded sands or gravelly SILTS clays, lean clays. <br /> ANO send mixture, I:ttie or no fines. AND CH Inorganic clays of high plasticity. <br /> SANDY CLAYS fat clays. <br /> SOILS SW Silty sands, sand-alit mixtures. LL >50 OH Organic clays of medium to high <br /> plasticity. <br /> SC Clayey sands, sand-silt mixtures. hIGHLSYCOtSRGANIC PT peat and other highly organic soils. <br /> �l <br /> ElSand pack <br /> Depth through which <br /> sampler is driven. <br /> Bentonite annular seal <br /> Relatively undisturbed sample <br /> 7771 <br /> 'L ? Neat cement annular seat <br /> Missed sample <br /> ❑ Blank PVC <br /> Ground water level <br /> observed in boring <br /> Mceh'ne—slotted PVC <br /> S-10 Sample number <br /> PVC Centralizer <br /> Pic) Photoionization 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 L75T 12 INCHES OF AN <br /> IS 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 CLASSIFICATION SYSTEM PLAT: <br /> AND SYMBOL KEY <br /> .�PPrlwd c.esr.r.rr,a Fire Engine Company No. 2P-3 <br /> 110 West Sonora Street <br /> PROJECT NO. 38009-2 Stvckton, California <br /> v <br />