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Soil Classification Standard Operating Procedure <br /> SWE-FSOP-201;Revision 0 Ahtna Southwest Environmental Operations <br /> E4CIEgFI LD GUIDE FOR group <br /> SOIL AND STRRATICRAPHIC ANALYSIS V.2 <br /> N-VALUE 9 (Isfy <br /> N-VALUE 0-2 r0.25 ► VERY SOFT <br /> DENSITY OR COARSE 0-4 r VERY LOOSE FINE 3-4 0.25-0.50 SOFT <br /> CONSISTENCY GRAINED 5-10 w LOOSE GRAINED 5.8 0.50-'1.0 ► MEDIUM <br /> DEPOSITS 11-29 - MEDIUM DENSE DEPOSITS 9-15 1-0-21 r STIFF <br /> 30-49 � DENSE 16-80 2.0-4.0 VERY STIFF <br /> �g0 � VERY DENSE X30 >p_O HARD <br /> YESI. <br /> MATRIX COLOR COATING or CONCENTRAT16 - <br /> List in%6Wanoe.dominant first YES}t._ Nobe irequarmy,cabr and slx® r <br /> COLOR 15 THE COLOR <br /> va. �cuU ncna A MATRIX COLOR? -- - - -_ <br /> THE COLOR FROTL <br /> M A COATING IJ6��f MOTE <br /> tDR CONCENTRATION? Nate con"91,calor,and Sze _j <br /> STEP 2.DETERMINE SAND VS.GRAVEL RATIO <br /> CLASSIFICATION I N C R E A S I N G G R A I N S I Z E <br /> w�.esercnumcaou�srn..-n AsrMDvAU - STEP 3: <br /> COARSE GRAINED DEPOSrfS - _ — GRAVEL cOFrnWE Warr <br /> _ FINE ME�1l7M ._ CUANSI SMALL LARGE SAND OR UPA L <br /> j+ W9�Y greiried�btl�n1GW.�6a°.6f1i�CS - r .__—_. ORFLOWMARr <br /> STEP Wo <br /> *MW ?.]F kw ]n Mu rs Wi �Fo uu <br /> 16 s STEP 2:DETERMINE PLASTICITY AND ASSIGN USCS GROUP SYMBOL <br /> C <br /> OR <br /> PINE I N C R E A S I N G P L A S T I C I T <br /> STEP 3- <br /> cnnmrrve wr ire <br /> sosv Rnes,saB9s ms cog Shag coalman s NON PLASTIC LOW PLASTICITY MEDIUM PLASTICITY HIGH GROUP SYMBOL <br /> ON FLOW W ART <br /> FINE-GRAINED DEPOSITS ML CL CH. IRFVERRFa <br /> [OmsrkC Ind lnorgrnlc) _- _- 4.H <br /> MOISTURE ABSENT F DRY FOR WATER RISES TO SURFACE SLOWLY ►SLOW OI LATENCY <br /> MOISTURE DAMP -MOIST NONELASTIC WATER RISES TO SURFACE QUICKLY ►RAPID DILATENCY <br /> VISIBLE WATER F WET FINES <br /> WILL NOT SUPPORT 6mrn DIAMETER ROLL IF HELD ON END s-NON-PLASTIC — <br /> PLASTICITY Gmm OlA.ROLL CAN BE REPEATEDLY ROLLED AND SUPPORTS ITSELF,Amm DIA.ROLL DOES NOT ►LOW PLASTICITY <br /> iw,,,.,,cusewcAnoFn 4mm O]A.ROLL CAN BE REPEATEDLY ROLLED AND SUPPORTS ITSELF,2mm O[A.ROLL DOES NOT ►MEDIUM PLASTICITY <br /> 2mm DIA.ROLL CAN BE REPEATEDLY ROLLED AND SUPPORTS II SELFHIGH PLASTICITY tD <br /> COHESIVENESS 8mNB <br /> m DIAMETER ROLL CANOT E FORMED -NONCOHESIVE <br /> Gmm DIAMETER ROLL CAN BE FORMED r COHESIVE <br /> Spheroidal peds or granules usually <br /> UNIFORM r MASSIVE packed loosely ►GRANULAR <br /> BEDS r30cm -THICKLY BEDDED SECONDAkY Irregulaf,roughly cubelike pads with <br /> SEDIMENTARY BEDS 3em to 30rm ► BEDDED SOIL planar faces(angular or subangular) a BLOCKY <br /> STRUCTURE BEDS 0.5cm to 30M � THINLY BEDDED STRUCTUREM SOLUM Flat orad horizontal peas F PLATY <br /> BEDS r0_Scm - LAMINATED Vertical,pilla dike pods with Oat lops f PRtSMAT(C <br /> Vertical,pilla dike pods with curved <br /> taps(which are commonly"bleached') r COLUMNAR <br /> MODIFIER S^MBBOOL tat SYMBOL 2nd SYMBOL LAST SYMBOL solum <br /> WEATHERING OJL MRAJ <br /> MOTTLE❑ r M OxIDIZED O LEACHED ►L SECONDARY EXAMPLE MOJL RJU <br /> ZONE ABBREVIATION ► J REDUCED R MOJUMOJL2 RU <br /> JOINTED UNLEACHE❑ ► U CARBONATE ► 2 <br /> UNOXIDIZED U <br /> TRACE ►FINE SAND <br /> SECONDARY 6°5 m 1596 ► FEW UNIFORM �MEDIUM-GRAINED SAND FOR GLACIAL y CLAST FRACTION <br /> GRAIN SIZE 1895 to 3046 ► FETTLE (aeaNY graded} �COARSE-GRAINED SAND OIAMIG <br /> graded) <br /> CLAST LITHOLOGY <br /> INFORMATION 31%to 49% SOMEMN NUN RM -CINE GRAVEL <br /> (well graded) -COARSE GRAVEL <br /> EOLUIN;LOESS) <br /> VARIDt13 FLUVIAL 3UBGLACWi <br /> QEPOS}TIDNAL ALLUVIAL GLACIAL ' SUGGLGLACIFLUVIAL GENERALIZED ►MASS SLUMP <br /> DEPOSITIONAL DEPOSITIONAL RESEOIMENTATION r SEDIMENT FLOW <br /> ENVIRONMENT ENVIRONMENTS r LACUSTRINE PROCESSES � GLACIOLACUSTRINE PROCESSES � <br /> (intarpretatiwt)r COASTAL <br /> ► RESEDIMENTEO COLLUVIUM <br /> rt RESEI)IMENTED <br /> STRATIGRAPHIC USE FORMAL STATE GEOLOGICAL SURVEY NOMENCLATURE WHEN POSSIBLE; <br /> IF NOT POSSIBLE.ASSIGN SITE-SPECIFIC UNIT NAME ACCORDING TO DEPOSITIONAL ENV]RONMENT i FACIES ASSEMBLAGE <br /> NAME <br /> s 10 Cm r $HAR�rA PT fpr p@tlOgeRIC atternailanjSTRATIGRAPliiC n 10 em(Nom transitlan interval) ► GRA {Or 7RANSIITONAL for weathanng zone change) <br /> CONTACT <br /> Fieure 1. Field Guide for Soil and Strat 1 <br /> Page 10 of 11 <br />