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MAJOR DIVISIONS TYPICAL NAMES <br /> GW graded raded ravels with or without sand, little or <br /> ` CLEAN GRAVELS es g <br /> GRAVELS WITH UTTLE no fines <br /> OR NO FINES . GP Poorly graded gravels with or without sand, little or <br /> MORE THAN HALF • • no fines <br /> COARSE FRACTION <br /> N IS LARGER THAN GM Silty gravels, silty gravels with sand <br /> NO. 4 SIEVE SIZE <br /> GRAVELS WITH <br /> OVER 15% FINES <br /> LO GC Clayey gravels, clayey gravels with sand <br /> z � <br /> a (n <br /> o SW Well graded sands with or without gravel, little or <br /> I " CLEAN SANDS no fines <br /> LU cn <br /> aWITH <br /> � SANDS oUFi Es Sp poorly graded sands with or withoutravel, little or <br /> 0 no fines g <br /> MORE THAN HALF <br /> COARSE FRACTION SM Silt sands with or without ravel <br /> LU <br /> IS SMALLER THAN y 9 <br /> N0. 4 SIEVE SIZE SANDS WITH <br /> OVER 15% FINES /A. -' <br /> SC Clayey sands with or without gravel <br /> Inorganic silts and very fine sands, rock flour, silts <br /> ML with sands and gravels <br /> J N SILTS AND CLAYS Inorganic clays of low to medium plasticity, clays <br /> Nz CL with sands and gravels, lean clays <br /> LIQUID LIMIT 50% OR LESS <br /> W i i t OL Organic silts or clays of low plasticity <br /> z � <br /> MH Inorganic silts, micaceous or diatomaceous, fine <br /> SILTS AND CLAYS sandy or silty soils, elastic silts <br /> w <br /> ,z—� <br /> LIQUID LIMIT GREATER THAN 50% CH Inorganic clays of high plasticity, fat clays <br /> LU <br /> � <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 drive sampler First encountered groundwater level <br /> I foot are indicated an the lags. <br /> I Static groundwater levet <br /> i <br /> UNIFIED SOIL CLASSIFICATION <br /> GE T TL ER - RYAN INC. ASTM D 2488-85 <br /> 6747 Sierra Ct., Suite J AND <br /> Dublin, CA 94568 (925) 551-7555 KEY TO SAMPLING DATA <br /> FILE NAME: P: PTYPES HL0G—KEY,0WG I Layout Tab: Dog Key <br />