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-.T <br /> If111 T I,�l•r Ijr, j <br /> ,.I.r �I.. ,. 1 Vl:•6!,A1.. <br />.III <br /> r y <br /> . I <br /> } + rl <br /> , <br />•' II UNIFIED SOIL . CLASSIFICATION SI'YSTIE M I" <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 fine <br /> Poorly—graded grovels or gravel SILTS sands or clayey silts with slight <br /> GRAVEL GP sand mixture, tittle ar no fines. AND Plasticity. <br /> AND <br /> GRAVELLY , gCLAYS Inorganic clays or haw to medium <br /> Silty gravelsravel—sand—silt -•�1, <br /> SOILS GM mixtures. LL [SO C clays,c eongclaysly, clays, sandy <br /> " Clayey gravels, gravel—sand—clay Organic Bilis and organ silt—clays <br /> COARSE CC mixtures. FINE OL ofglow lastic+t g "I <br /> GRAINED P Y. „ <br /> SOILS - Weil—graded sands or gravelly GRAINED Inorganic clays or low to medium <br /> SW sands, little or no fines. SOILS g Ys <br /> ,,. MN plasticity, gravelly clays, sandy, , <br /> SAND clays, lean clays. <br />• AND SP Poorly—graded sands or gravelly SILTS � <br /> n sand mixture, little or no fines. AND Inorganic clays of high plasticity, <br /> SANDY CLAYS CH fat clays. 1 <br /> SOILS SM Silty sands, sand—si4t mixtures. LL >50 ! " <br /> ,. OH Organic clays of medium to high <br /> PlasUcity. <br /> r <br /> F70,yey sands, sand--silt mixtures. JH_IGHLY ORGANIC PT <br /> SOILS I Peat and other highly organic soil§. <br /> Sand pack ' <br /> T Depth through which I <br /> I sampler is driven. <br /> ® Bentonite annular seal <br />�• T Relatively undisturbed sample <br /> ■ <br /> NNeat cement annular• seoi <br /> Missed sample <br /> ❑ Blank PVC <br /> V Ground water level <br /> observed in boring ; <br /> Machine—slotted PVC <br /> 5--10 ° '� Sample number <br /> PIDPVC Centralizer <br /> Photoionization detector reading <br /> i> <br /> 4 <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 A.N <br /> 18 INCH PENETRATION, <br /> DASHED LINES SEPARATING UNITS OF THE LOG <br /> REPRESENT APPROXIMATE BOUNDARIES ONLY. <br /> I ACTUAL BOUNDARIES MAY BE GRADUAL. LOGS "T <br /> REPRESENT SUBSURFACE CONDITIONS IN THE <br /> BORING AT THE TIME OF DRILLING ONLY. <br /> UNIFIED SOIL CLASSIFICATION SYSTEM PLATE <br /> AND SYMBOL KEY <br /> ARCO Service Station No. 548 3 <br />• FILE Na. 1612 Hammer Lane <br /> PROJECT NO. 30004 0004D4A Stockton, California <br />