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' "OR ONISIONS LTR OESCRIPTION MAJOR aIYISiONS LTR DESCRIPTION <br /> Inorganic silts and very fine sands, rock <br /> CW Well—graded gravel* or grovot--sand mixtures, IAL flour, silty a clayey fine sand, or clayey <br /> little or no fines. _ SILTS silts with slight plasticity. <br /> GRAVEL Poorly—graded grovels or gravel—sand mixture. AND Inorganic clays of lour to medium plasticity <br /> GP little or no fines. CL gravelly clays, sandy clays. silty cloys, <br /> ' AND CLAYS lean clays. <br /> GRAVELLY LL<50 <br /> SOILS CIA Silty gravels, grave!—sand—silt mixtures. Organic silts and organic silt—clays of <br /> EINE CL low plasticity. <br /> COARSE CC Clayey gravels, graversand—clay mixtures. G"NED Inorganic silts, micaceous or diatomaceous <br /> GUNED SOILS IAM rine sandy or silty soils, elastic silts. <br /> Well—graded sands or gravelly sande. SILTS <br /> SOILS '� little or no fines. <br /> AND <br /> CH Inorganic clays of high plasticity, tot clays. <br /> ' SAND SP Poorly—graded sonde or gravaiy sands, CLAYS <br /> AND stills or !mea. LL<50 <br /> SANDY CH Organic clays of medium to high plasticity, <br /> Sm Silty sand, sand—sift mBdufes. <br /> SOILS <br /> ' HIGHLY ORGANIC <br /> SC Clayey sand, sand—ctay mixture& SOILS Pt Peat and other highly orgnoit sols. I <br /> I <br /> ' Recovery Symbol Codes <br /> Sample collected for chemical analysis <br /> Interval of recovered soil core collected with split-barrel continuous sampler <br /> ' Interval of recovered soil core collected with split-spoon drive sampler <br /> ® Interval of no recovery <br /> Boring Symbols Codes <br /> ' Grout El <br /> Filter material Q First Water Level <br /> T Final Water Level <br /> ! i <br /> Bentonite r ; Fill material <br /> 1. Dashed lines separating soil strata on the boring logs represent inferred boundaries <br /> between sampled intervals that may be abrupt or gradual transitions. Solid lines <br /> ' represent approximate boundaries observed within sampled intervals. <br /> 2. Soil color described according to Munsell Soil Color Charts, 1990 Edition, revised. <br /> 3. OVM . organic vapor meter reading in parts per million (ppm), the maximum <br /> W concentration range of` the OVM is 10,000 ppm; O.R is=>10,000- ppm: <br /> 4. pH - pH of soil in water (standard units). <br /> EXPLANATION OF BORING LOGS <br /> CHEVRON REAL ESTATE MANAGEMENT COMPANY Prosect No. <br /> ' GEOMATRIX 540 North Aurora/969 East Fremont Streets C3077 <br />