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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 i <br /> OR NO FINES GP Poorly graded gravels with or without sand, little or <br /> MORE THAN HALF ' no fines <br /> viCOARSE FRACTION <br /> J N IS LARGER THAN GM Silty gravels, silty gravels with sand <br /> N z NO 4 SIEVE SIZE GRAVELS WITH <br /> o OVER 15% FINES <br /> Z GC Clayey gravels, clayey gravels with sand <br /> Ix <br /> c� o SW Well graded sands with or without gravel, little or <br /> w CLEAN SANDS no fines <br /> QSANDS OR NO SP Poorly graded sands with or without gravel, little or <br /> o no fines <br /> U <br /> MORE THAN HALF <br /> a COARSE SMALLER �, SM Silty sands with or without gravel <br /> ZE NO 4 SIEVE SIZE SANDS WITH <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 /> j g SILTS AND CLAYS Inorganic clays of low to medium plasticity, clays <br /> N Z CL LIQUID LIMIT 50% OR LESS with sands and gravels, lean clays <br /> n i OL Organic silts or clays of low plasticity <br /> zg <br /> MH Inorganic silts, micaceous or diatomaceous, fine <br /> wSILTS AND CLAYS sandy or silty soils, elastic silts <br /> z CH Inorganic clays of high plasticity, fat clays <br /> LIQUID LIMIT GREATER THAN 50% <br /> o ,%I' 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 No soil sample recovered <br /> Soil Calor Charts (1993 Edition) ■ "Undisturbed" sample <br /> BLOWS/FT Sample drive hammer weight — V First encountered groundwater level <br /> 140 pounds falling 30 inches <br /> Blows required to dnve sampler T Static groundwater level <br /> 1 foot are indicated on the logs <br /> GF r r[ER - RYAN INC. UNIFIED SOIL CLASSIFICATION <br /> ASTM D 2488-85 <br /> 6747 Sierra Ct, Suite J AND <br /> Dublin CA 94568 (925) 551-7555 KEY TO SAMPLING DATA <br /> FILE NAAdE P PTI PES SLOG—KEYOWG I Layout Tab Blog Key <br />