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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISIONS LTR DESCRIPTION MAJOR DIVISIONS LTR DESCRIPTION <br /> GW Well-graded gravels or gravel sand ML Inorganic silts and very fine- <br /> mixtures. little or no fines grained sands, rock flour. silty <br /> or clayey fine sands or clayey <br /> GRAVEL GP Poorly-graded gravels or gravel SILTS silts with slight plasticity <br /> AND send mixture, little or no fines AND <br /> GRAVELLY Silt gravels, gravel-sand-clay CLAYS GL Inorganic clays of low to meds <br /> SOILS GM y y LL<50 plasticity, gravelly clays, sandy <br /> mixtures clays, salty clays, lean clays <br /> GC Clayey gravels, gravel-sand-clay Organic salts and organic silt- <br /> COARSE mixtures FIPIE GL clays of low plasticity <br /> GRAINED GRAIIM Inorganic all , micaceous or <br /> SOILS SW Well-graded sands or gravelly SOILS MH diatomaceous fine-grained sandy <br /> sands, tittle or no fares or a3ltv soils elastic silts <br /> SAND SP Poorly-graded sands or gravelly SILTS <br /> CH Inorganic clays of high plast- <br /> AND sands, little or no fines CLAYS icity, fat clays <br /> SANDY LL>60 <br /> S0� SM Silty sands, sand-silt mixtures OH pplasUcity sys of medium to high <br /> SC Clayey sends. sand-clay mixtures HIGHLY ORGANIC I Pt Peat and other highly organic <br /> SOILS Boils <br /> WELL DESIGN <br /> IDEPTH THROUGH WHICH SAND PACK <br /> SAMPLER IS DRIVEN F] <br /> RELATIVELY UNDISTURBED ■ BENTONITE ANNULAR SEAL <br /> SAMPLE <br /> MISSED SAMPLE ® NEAT CEMENT ANNULAR SEAL <br /> 0 GROUNDWATER LEVEL BLANK PVC <br /> OBSERVED FROM FIRST WET <br /> SOIL SAMPLE IN BORING <br /> V STATIC GROUNDWATER LEVEL MACHINE--SLOTTED PVC <br /> OVM ORGANIC VAPOR METER READING S-10 SAMPLE LOCATION <br /> IN PARTS PER MILLION <br /> NR NOT RECORDED <br /> PID PHOTO—IONIZATION DETECTOR READING NA NOT ANALYZED <br /> IN PARTS PER MILLION <br /> BLOW/Fr REPRESENTS THE NUMBER OF BLOWS OF DASHED LINES SEPARATING UNITS ON THE LOG <br /> A 140-POUND HAMMER FALLING 30 INCHES REPRESENT APPRO]MLM BOUNDARIES ONLY <br /> TO DRIVE THE SAMPLER THROUGH THE LAST ACTUAL BOUNDARIES MAY BE GRADUAL_ LAGS <br /> 12 INCHES OF AN 18-INCH OR 24-INCE{ PENETRATION REPRESENT SUBSURFACE CONDITIONS AT THE <br /> BORING LOCATION AT THE TIME OF DRILLING <br /> ONLY <br /> I <br /> UNIFIED SOIL CLASSIFICATION SYSTEM ATTACHNEWr <br /> AND LOO OF BORINGS SYMBOL KEY <br /> FORMER TOSCO FACH= 5886 <br /> 2701 West March Lane D <br /> PROJECT 2055 Stockton. California <br /> i <br />