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UNIFIED SDOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISION LTR DESCRIPTION MAJOR DIVISION LTR DESCRIPTION <br /> Weil—graded grovels or Inorganic slits and very <br /> GW gravel- sand mixtures ML fine sands rock flour <br /> little or no fines silty or clayey fine sands <br /> or clayey silts with slight <br /> GRAVEL Poorly—graded gravels or SILTS plasticity <br /> AND GP gravel—sand mixtures, AND <br /> GRAVELLY little or no fines Inorganic clays of low to <br /> SOILS CLAYS CL medium plasticity, gravelly <br /> GM Silty grovels gravel—sand— LL<50 clays sandy clays silty <br /> silt mixtures clays. lean clays <br /> GC Clayey gravel gravel—sand OL Organic silts and organic <br /> COARSE-- --clay mixtures FINE— slit—clays of low plasticity <br /> GRAINED Weil—graded sand or GRAINED <br /> SOILS SW gravelly sands, little or SOILS Inorganic silts, micaceous <br /> or dtatgmaceous fine <br /> no fines MH <br /> sandy or silty soils, <br /> SAND Poorly—graded sands or SILTS elastic silts <br /> AND <br /> SANDY SP gravelly sands little or AND Inorganic clays of high <br /> SOILS no fines CLAYS CH plasticity fat clays <br /> LL>50 <br /> SM Silty sands sand—silt Organic clays of medium <br /> OH to high plasticity, organic <br /> mixtures silts <br /> SC Clayey sands sand—clay HIGHLY ORGANIC SOILS PT Peat and other highly <br /> mixtures organic soils <br /> 1 <br /> Depth through which ❑ Sand pack <br /> sampler is driven <br /> ■ Stratigraphic contact <br /> ..-0- Sample interval Bentonite <br /> i submitted for <br /> laboratory analysis Neat cement <br /> No sample recovered <br /> ® Caved native sod Gradational contact <br /> T Static water level <br /> observed in well/boring Fl Initial water leve! Blank PVC <br /> observed in boring <br /> S-10 Sample number © Machine—slotted PVC <br /> PID Photolonization detector ® Inferred contact <br /> o Pea gravel <br /> BLOWS REPRESENT THE NUMBER OF BLOWS OF A 140—POUND HAMMER <br /> FALLING 30 INCHES TO DRNE THE SAMPLER THROUGH EACH 6 INCHES <br /> OF AN 18—INCH PENETRATION <br /> GRADATIONAL AND INFERRED CONTACT LINES SEPARATING UNITS ON THE <br /> LOG REPRESENT APPROXIMATE BOUNDARIES ONLY ACTUAL BOUNDARIES <br /> MAY BE GRADUAL LOGS REPRESENT SUBSURFACE CONDITIONS AT THE <br /> BORING LOCATION AT THE TIME OF DRILLING ONLY <br /> Z"AkMAM UNIFIED SOIL CLASSIFICATION SYSTEM <br /> �� AND SYMBOL KEY <br /> fror zngr ro Restore VatvrB RUIZ GROCERY STORE <br /> 4491 WEST DURHAM FERRY ROAD <br /> PROJECT 123020.01 TRACE, CALIFORNIA <br />