ASTM_D_6323_-_19.pdf

Designation:D632319Standard Guide forLaboratory Subsampling of Media Related to WasteManagement Activities1This standard is issued under the fixed designation D6323;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This guide covers common techniques for obtainingrepresentative subsamples from a sample received at a labora-tory for analysis.These samples may include solids,sludges,liquids,or multilayered liquids(with or without solids).1.2 The procedures and techniques discussed in this guidedepend upon the sample matrix,the type of sample preparationand analysis performed,the characteristic(s)of interest,and theproject-specific instructions or data quality objectives.1.3 This guide includes several sample homogenizationtechniques,including mixing and grinding,as well as informa-tion on how to obtain a specimen or split laboratory samples.1.4 This guide does not apply to air or gas sampling.1.5 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.6 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2C702/C702M Practice for Reducing Samples of Aggregateto Testing SizeC859 Terminology Relating to Nuclear MaterialsD346/D346M Practice for Collection and Preparation ofCoke Samples for Laboratory AnalysisD2234/D2234M Practice for Collection of a Gross Sampleof CoalD4547 Guide for Sampling Waste and Soils for VolatileOrganic CompoundsD4823 Guide for Core Sampling Submerged,Unconsoli-dated SedimentsD5681 Terminology for Waste and Waste ManagementD5743 Practice for Sampling Single or MultilayeredLiquids,With or Without Solids,in Drums or SimilarContainersD6051 Guide for Composite Sampling and Field Subsam-pling for Environmental Waste Management Activities3.Terminology3.1 DefinitionsFor definitions of terms used in this guide,refer to Terminology D5681.3.2 Definitions of Terms Specific to This Standard:3.2.1 contaminant unit,nthe largest particle size thatcontains the contaminant of interest3.2.1.1 DiscussionThe contaminant of concern,as definedby the project objectives,may be associated with all theparticle sizes or associated with only a certain particle size orsizes.At the time of waste generation,discharge,or spill,theparticle size of this contaminant of concern may be on theatomic or molecular scale,such as solvent spill into sand,or amacroscale,such as lead acid batteries at a dump site.Thecontaminant unit may also be in between these scales,such aslead particles encapsulated in coal.In practice,the contaminantunit may change if the contaminant unit becomes absorbed oradsorbed to particles larger than the contaminant unit.It is thesize of the contaminant unit at the time of subsampling,not atthe time of generation,that is referred to as the contaminantunit.3.2.2 maximum allowable particle size,nthe largest linealdimension of a samples individual particles accepted for agiven sample mass.3.2.2.1 DiscussionThe maximum allowable particle size1This guide is under the jurisdiction of ASTM Committee D34 on WasteManagement and is the direct responsibility of Subcommittee D34.01.01 onPlanning for Sampling.Current edition approved Feb.1,2019.Published February 2019.Originallyapproved in 1998.Last previous edition approved in 2012 as D6323 121,whichwas withdrawn in October 2018 and reinstated in February 2019.DOI:10.1520/D6323-19.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 is sometimes referred to as the allowable particle size.Asimplemethod of measurement is a sieve.3.2.3 multilayered sample,na sample consistin