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1 • • <br /> 1 <br /> • <br /> 1 <br /> 1 F_ <br /> UNIFIED SOIL CLASSIFICATION SYSTEM <br /> GRAVELSClean Gravels GW Well Graded Gravels,Gravel-Sand Mixtures <br /> ** M With Little or IGp y Poorl Graded Gravels,Gravel-Sand <br /> No Fines <br /> rA More Than Half Mixtures <br /> A Is Larger Than Gravels WithGM Silty rave s,Poorly Graded Gravel-Sand- <br /> No 4 Sieve Size Over 12 % Silt Mixtures <br /> z Fines GC Silty Gravels,Poorly Graded Gravel-Sand- <br /> LIE Clay Mixtures <br /> Z Clean Sands SW Well Graded Sands,Graveley Sands <br /> SANDS With Little or <br /> 4o No Fines Sp Poorly Graded Sands,Graveley Sands <br /> ' 0 More Than Half <br /> d E~ Is Smaller Than Sandi With SM Silty Sands, Poorly Graded Sand-Silt- <br /> 0 a No 4 Sieve Size Over 12 % Mixtures <br /> U Fines SC Clayey Sands,Poorly Graded Sand-Clay- <br /> ' W Inorganic its n eryme Sanas,frock Flour,Silty <br /> SILTS AND CLAYS Or Clayey Fine Sands,Or Clayey Silts With Slight Plasticity <br /> $ Inorganic Clays Of Low to Medium Plasticity,Gravelly <br /> O >' CL Clays,Sandy Clays,Silty Clays,Lean Clays <br /> e Liquid Limit Leas Than 50 <br /> A H OL Organic Clays and Organic Silty Clays Of Low <br /> IPlasticlu <br /> - I Inorganic Silts,Micaceous Or Diatomaceous Fine Sandy or <br /> SILTS AND CLAYS Silty Soils,Elastic Silts <br /> CH Inorganic Clays Of High Plasticity,Fat Clays <br /> (, Liquid Limit Greater Than SQ ganic lays Of Medium To High Plasticity, <br /> W e� OH Organic Silts <br /> HIGHLY ORGANIC SOILSPT Peat And Other Highly Organic Soils <br /> WELL CONSTRUCTION AND SOIL SAMPLING SYMBOLS <br /> Depth Through Which Sand Pack Annular Seal <br /> Sample Is Driven (Monterey Sand F1 (Cement Bentonite Mix) <br /> ' #3 Or 02/12) <br /> Relatively Undisturbed Blank Casing . Bentonite Plug Ei� Sample Number <br /> Sample <br /> Blow Counts(181,No Sample Recovery Machine5lotted Static Water Level[ills Drive W/140 lb <br /> ' "n Hammer W/30"Fail) <br /> Well Screen � Observed in Well <br /> GALLARDO &ASSOCIATES SOIL BORING/WELL , <br /> . Environmental And Geological Services LOG KEY <br />