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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISIONS ITR DESCRIPTION MAJOR DIVISIONS LTR DESCRIPTION <br /> GW Well-graded gravels or gravel sand ML Inorganic silts and very fins- <br /> mixtures little. or no fines gi ained sands rock flour Nrlry <br /> Poorly-graded raded ravels or ravel or clayey fine sands or cl,ivcy <br /> GRAVEL C,P y-g g S SILTS silts with slight plasticity <br /> AND sand mrxturt little or no fines A",D <br /> GRAVELLY Silty gratiels gravel-sand-clay CLA o Cl Inorganic clays of clas saann IoA to drurn <br /> SOLS GNI LL'50 plasticity gravelly claydy <br /> mixtures cla%s silty clays lean clays <br /> Clayev gra%els gravel-sand-clay pi ganic silts and organic silt- <br /> COARSE G� mixtures FINE OL clays of low plasticity <br /> GRAINED GRI[INED Inorganic silts micaceous or <br /> SOILSWell-graded sands or gravelly SOILS <br /> W MH diatomaceous fine-g-ained sandy <br /> sands little or no fines SILTS or ashy soils elastic silts <br /> SAND SP Poorly-graded sands or gravelly 4ND CH Inorganic clays of high plast- <br /> AND sands little or no fines CLAfS icity fat clays <br /> SANDY LL>50 <br /> SOILS SM Silty sands sand-silt P mixtures OH Olastncit yic clays of medium to high <br /> SC Clayey sands sand-clay mixtures HIGHLA ORGANIC Pt Peat and other highly organic <br /> SOILS soils <br /> WELL DESIGN <br /> IDEPTH THROUGH WHICHElSAND PACI\ <br /> SAMPLER IS DRIVEN <br /> T RELATIVELY UNDISTURBED ® BENTONITE ANNULAR SEAL <br /> 0 SAMPLE <br /> T MISSED SAMPLE ❑❑ LEAT CEVENT ANNULAR SEAL <br /> GROUINrDWATER LEVEL <br /> �_ BLANK PVC <br /> OBSERVED FROM FIRST YET ❑ <br /> SOIL SAMPLE IN BORING <br /> STATIC GROUNDWATER LEVEL ❑❑ \1ACHINE—SLOTTED PVC <br /> T ORGANIC VAPOR METER READING 5-10 SAMPLE NUMBER <br /> 0�1I IN PARTS PER MILLION <br /> PHOTO—IONIZATION DETECTOR READING <br /> PID IN PARTS PER MILLION <br /> BLOW/FT REPRESENTS THE NUMBER OF BLOI4S OF DASHED LINES SEPARATING UNITS ON THE LOG <br /> A 110-POUND HA%IMER FALLING 30 INCHES REPRESENT APPROXIMATE BOUNDARIES ONLt <br /> TO DRIVE THE SAMPLER THROUGH THE LAST ACTU4L BOUNDARIES MAY BE GRADUAL LOGS <br /> 12 INCHES OF AN 18-IhCH PENETPATION REPRESENT SUBSURFACE CONDITIONS AT THE <br /> BORING LOCATION AT THE TIME OF DRILLING <br /> ONLY <br /> . UNIFIED SOIL CLASSIFICATION SYSTEM PLATE <br /> AND LOG OF BORINGS SYMBOL KEY <br /> ER! ENYIRONMdNt•IrL <br /> ResoLurroNs live UNOCAL SERVICE STATION #5888 Appends♦ <br /> 2701 West March Lane <br /> PROJECT 2055 Stockton California <br />