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' UNIFIED SOIL CLASSIFICATION SYSTEM <br /> NA loll 1 MAJOR <br /> DIYISIOMS LTR SnIM OESCR[PTIOR DIVIS[O"S LTR STIrOL OESCRI"ION <br /> GW0 W11-graded gravels or gravel sand it Inorganic silts and very flee <br /> b' wiatures little orno floes. sands. rock Ilour. silty or <br /> clayey fine sands or clayey silts <br /> GRAVEL d- 1pll*rly-gr&4*d gravels or gravel SATS with slight plasticity. <br /> GP sand â– lature. little or no fines. AND Inorganic clays of low to wediv! <br /> AND CL lasticity. gravelly clays. sandy <br /> Silty gravels. gravel-sand-silt [LMS lays. silty clays. lean clays: <br /> AAYEILT wiatures. LL<SO <br /> SOILS 1 l nic silts and organic silt- <br /> COARSE Clayey gravels. gravel-sand-clay FINE II1 lays of low plasticity. <br /> vel <br /> AA 1 MEO GRAINED <br /> SW . wall- ra4ed sands or rnell Inorganic silts. wicactous or <br /> SOILS g y SOULS SILTS diatowactous floe sah4y or silty <br /> suds, little or ne f has: it 1 if <br /> f <br /> AND <br /> SAND SP Poorly-graded sands'or gravelly CUTS Inorganic clays of high plasticity. <br /> Axo sands. ittle or no fines. a CN fat clays. <br /> LL>SO <br /> SANDY SH Silty sands.-sand-silt ailatures. ON gamic clays of wediuw to high <br /> SOILS <br /> lasticlt . organic slits <br /> , <br /> SC Lia sands. sand-clay wlstunt. NIGMLT eat and other highly organic <br /> Clayey ORGANIC SOILS Pt ill. <br /> r <br /> Standard Penetration Split Spoon Sample <br /> 'f <br /> Modified Cali fornk1a Sampler <br /> Shelby Tube Sample' <br /> + <br /> Z Water Level Observed in Boring p, <br /> No Recovery <br /> N F W I No Free Water Encountered <br /> PP Pocket Penetrometer ( field) <br /> NOTE: The lines separating strata on the jogs repre- <br /> sent approximate boundaries only. 'The actual <br /> transition may be gradual . No warranty is pro- <br /> vided as' to the continuity of soil6strata between <br /> borings. Logs represent the soil section observed <br /> at the boring location; on the date of drilling <br /> only. <br /> BALBI & HANG ASSOCIATES BORING NG 'LOG LEGEND G E N D 'T` <br /> C <br /> 06oteehnlcal consultants - matefiala testing <br /> ARCO AM/PH FACILITY <br /> PROJECT NO. 1525-1Q DATE: 4/27/87 STOCKTON, CALIFORNIA '. <br />