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1 <br /> UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISIONS ILTR DESCRIPTION' MAJOR DIVISIONS LTR DESCRIPTION <br /> M W94—grades gravels or gravel ane <br /> rata nxhRurm little or no flnes. Inorganlo r11ts ana vary fine tarme, <br /> ML rodt pout. silty or cia"y fixe <br /> GRAVEL CP Paorty-gradea gravel• or gra SILTS sands or clayey site with etight <br /> ' ANO rano mixture. little or no finer. AND PlanticKv. <br /> GRAVELLY Sity gmVela, growl—eine-•silt CLAYSInemnie Okays or low to maaarm <br /> Z= mixtures. LL <50 CL Plasucity. gravelly days. sandy <br /> COARSE GC any growls. gravrx—eana—clay dayw, lain dory <br /> GRAINED rnhltures. F1 NE OL urgani' sats nw:and argos+t—days SOILS 5111 Wali—gradx�d sands or gravely GRAINED Wastklty <br /> sdnas, little or no tlnem SOLS inorganic ctoys nr lour to tneaium <br /> SANDoreMH ,:4w r.ity. gravauy dayw. sway <br /> ANO up Por-9raaed sands or gravely SILTS elan, lean days. <br /> SANDY =Ind mixture, tittle or ria fvwes. AND Ct! Inorganic clays of high Olastldty. <br /> 5GIL5 I CLAYS Fat clava. <br /> Sity sonar, sand—silt mi=tura. LL >5f) <br /> OH Organic clays of mraltert to high <br /> SC piastw:ity. <br /> Clayey Bonds, sand—silt mirturas. HIGHLY ORGANIC <br /> 501 PT Peat and other highiy arganir- soils. <br /> i DeRtn through which Sana pack <br /> I slatrzpler is driven. <br /> _rRelatively Undisturbed sample Bentonite annular seal <br /> Neat cement annular seal <br /> Missea sample <br /> ® Ground water level Blank PVC <br /> ,90' observed in boring <br />' <br /> 5—+0 Machine—slotted PVC <br /> sample number <br /> P10 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 B0UNDARIES ONLY. <br />' ACTUAL BOUNDARIES MAY BE GRADUAL. LOGS <br /> REPRESENT SUBSURFACE CONDITIONS IN THE <br /> BORING AT THE TIME OF DRILLING ONLY. <br /> LOW= SOL CUSSFICAnoH SYSTO <br /> AM SYMOL KEY <br />