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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 WITH LITTLE + <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 15 LARGER THAN GM Silty gravels, silty gravels with sand <br /> ND. 4 SIEVE SIZE <br /> z GRAVELS WITH <br /> OVER 15% FINES <br /> Uj z GC Cloyey gravels, clayey gravels with sand <br /> — <br /> aN <br /> o SW Well graded sands with or without gravel, little or <br /> CLEAN SANDS no fines <br /> WITH a SANDS ORNFIFINE <br /> OS Sp Poorly graded sands with or without ravel, little or <br /> � g <br /> 0 no fines <br /> U MORE THAN HALF <br /> IS OS�ShIR G SM Silty sands with or without gravel <br /> NO. 4 SIEVE SIZE SANTION DS W[TH <br /> OVER 15% FINES <br /> SC Clayey sands with or without gravel <br /> ML Inorganic silts and very fine sands, rock flour, silts <br /> with sands and gravels <br /> 0CD SILTS AND CLAYS Inorganic clays of low to medium plasticity, clays <br /> CL with sands and gravels, lean clays <br /> LIQUID LIMIT 50% OR LESS X// <br /> ,�, OL Organic silts or clays of low plasticity <br /> MH Inorganic silts, micaceous or diatomaceous, fine <br /> sandy or silty soils, elastic silts <br /> L SILTS AND CLAYS <br /> LIQUID LIMIT GREATER THAN 5O% CH Inorganic clays of high plasticity, fat clays <br /> o 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 /> bgs below ground surface — — — — Inferred contact <br /> (2.5YR 6/2) Soil color according to Munsell F No soil sample recovered <br /> Soil Color Charts (1993 Edition) ■ "Undisturbed" sample <br /> BLOWS/FT. Sample drive hammer weight — First encountered groundwater level <br /> 140 pounds falling 30 inches. <br /> Slows required to drive sampler T Static groundwater level <br /> 1 foot are indicated on the logs. <br /> UNIFIED SOIL CLASSIFICATION <br /> GE T T t ER - RYA N INC. ASTM D 2488-85 <br /> 6747 Sierra U., Suile J AND <br /> CuNin, CA 94568 (925) 551-7555 KEY TO SAMPLING DATA <br /> FILE NAME: P: PTYPES BLDG—KEY.DWG Layout Tab- 81og Key <br />