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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 MI, Inorganic silts and very fine— <br /> mixtures, little or no fines grained sands. rock flour. silty <br /> or clayey fine sande or clayey <br /> GRAVEL GP Poorly—graded gravels or gravel SMTS silts with slight plasticity <br /> AND sand mixture. little or no fines AND <br /> GRAVELLY Silt avels. gravel—send—cin CLAYS CI, Inorgamo clays of loW to meth <br /> ll— <br /> soils GM y y LL<50 platy gravelly clays. sandy <br /> mixtures clays, sflty clays. lean clave <br /> Clayey gravels, gravel—sand—clay Organic silts and organic silt— <br /> COARSE GC mixtures FINE OL clays of low PIeaticity <br /> GRAINED ThorgaW auto. micaceous or <br /> Gs SW Well—graded sands or gravelly SOILS MH diatomaceous fine—grained Bandy <br /> sands, little or no fines or Kilt soils elnetio silts <br /> SANDSIL <br /> SP Poorly—graded sands or gravellyD CH Inorganic clays of high plant— <br /> AND sands. little or no fines CLAYS idty, fat clays <br /> SANDY LL>50 Organic clays of medium to high <br /> SOILS SM Silty sands, Band—silt mixtures OH plasticity <br /> SC Clayey sands. sand—clay mixtures HIGHLYOILS <br /> ORGANIC Pt Peat <br /> and other highly organic <br /> Ssoils <br /> WELL DESIGN <br /> IDEPTH THROUGH WHICH SAND PACK <br /> SAMPLER IS DRIVEN <br /> T RELATIVELY UNDISTURBED ■ BENTONITE ANNULAR SEAL <br /> i SAMPLE <br /> MISSED SAMPLE ® NEAT CEMENT ANNULAR SEAL <br /> . GROUNDWATER LEVEL BLANK PVC <br /> OBSERVED FROM FIRST WET <br /> - SOIL SAMPLE IN BORING <br /> 0 STATIC GROUNDWATER LEVEL © MACHINE—SLATTED PVC <br /> OVM ORGANIC VAPOR METER READING S-10 SAMPLE LOCATION <br /> IN PARTS PER MILLION <br /> NR NOT RECORDED <br /> PHOTO—IONIZATION DETECTOR READING NA NOT ANALYZED <br /> PID IN PARTS PER MILLION <br /> BLOW/FT REPRESENTS THE NUMBER OF BLOWS OF DA.SILED 12M SEPARATING UNITS ON THE LOG <br /> A 140—POUND HAMMER FALLING 30 INCHES ANT APPROBATE BOUNDARIES ONLY <br /> TO DRIVE THE SAMPLER THROUGH THE LAST ACTUAL BOUNDARIES MAY BE GRADUAL. LAGS <br /> 12 INCHES OF AN 18—INCH PENETRATION R 'T SUBSURFACE CONDITIONS AT THE <br /> BORING LOCATION AT THE TIME OF DRILLING <br /> ONLY <br /> UNIFIED SOIL CLASSIFICATION SYSTEM PLATE <br /> AND LOQ OF BORMOS SYMBOL KEY <br /> • TOSCO 76 SERVICE STATION SSSS Appendix <br /> 2701 West March Lase <br /> PROJECT 2055 Stockton. California <br />