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MAJOR DIVISIONS TYPICAL NAMES <br /> • GW Well graded gravels with or without sand, little or <br /> CLEAN GRAVELS •• no fines <br /> GRAVELS wTH uTTLE <br /> OR NO FINES . . GP Poorly graded gravels with or without sand, little or <br /> MORE THAN HALF • no fines <br /> COARSE FRACTION <br /> $ 1S LARGER THAN GM Silty gravels, silty gravels with sand <br /> p NO 4 SIEVE SIZE40 <br /> V) Z GRAVELS WITH <br /> OVER 15% FINES <br /> W GC Clayey gravels, clayey gravels with sand <br /> Z <br /> a15 1I <br /> 0 SW Well graded sands with or without gravel, little or <br /> W 0 CLEAN SANDS <br /> no fines <br /> aSANDS OR No FINES Sp Poorly graded sands with or without gravel, little or <br /> p no fines <br /> U MORE THAN HALF <br /> W COARSE FRACTION SM Silty sands with or without gravel <br /> oC IS SMALLER THAN <br /> NO 4 SIEVE SIZE SANDS WITH <br /> OVER 15% FINES <br /> IZA SC Clayey sands with or without gravel <br /> ML inorganic silts and very fine sands, rock flour, silts <br /> with sands and gravels <br /> S SILTS AND CLAYS <br /> CL Inorganic clays of low to medium plasticity, clays <br /> p z with sands and gravels, lean clays <br /> N LIQUID LIMIT 50% OR LESS <br /> im ' i OL Organic silts or clays of low plasticity <br /> z_ g <br /> a Inorganic silts, micaceous or diatomaceous, fine <br /> ja <br /> SILTS AND CLAYS <br /> MH sandy or silty soils, elastic silts <br /> w <br /> Z CHInorganic clays of high plasticity, fat clays <br /> L` �$ LIQUID LIMIT GREATER THAN 50% r//,000 <br /> OH Organic silts or clays of medium to high plasticity <br /> HIGHLY ORGANIC SOILS PT Peat and other highly organic soils <br /> PID Volatile vapors in ppm Observed contact <br /> (2 5YR 6/2) Soil color according to Munsell — —— — Inferred contact <br /> Soil Color Charts (1993 Edition) No soil sample recovered <br /> BLOWS/FT. Sample drive hammer weight — ■ "Undisturbed" sample <br /> 140 pounds falling 30 inches. <br /> Blows required to dnve sampler Y First encountered groundwater level <br /> 1 foot are indicated on the logs I Static groundwater level <br /> UNIFIED SOIL CLASSIFICATION <br /> GETTLER - RYAN INC. ASTM D 2488-85 <br /> 6747 Sierra Ct, Suite J AND <br /> Dubiln, CA 94568 (925) 551-7555 KEY TO SAMPLING DATA <br /> FILE NAiAE P PTYPES BLOC—KEY OWC I Layout Tab Bloq Kay <br />