1、Designation:D706904(Reapproved 2015)Standard Guide forField Quality Assurance in a Groundwater Sampling Event1This standard is issued under the fixed designation D7069;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last
2、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 the quality assurance(QA)methodsthat may be used to assure the validity of data obtained duringthe sampling of
3、 a groundwater monitoring well.QA is anyaction taken to ensure that performance requirements are metby following standards and procedures.Following QA prac-tices becomes even more critical if the data must be validatedin a court of law.Under certain conditions,it may be necessaryto follow additional
4、 or different QA practices from those listedin this guide.QA practices should be based upon data qualityobjectives,site-specific conditions,and regulatory require-ments.1.2 This standard addresses QA procedures used in the fieldand does not refer to laboratory QA procedures.1.3 This standard also do
5、es 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 and health practices and to determine theapplicability of regulatory limitations prior to use.1.4 This standard provides guidance f
6、or selecting andperforming various field QA procedures.This document cannotreplace education or experience and should be used in con-junction with professional judgement.Not all of the proceduresare applicable in all circumstances.This ASTM standard is notintended to represent or replace the standar
7、d of care by whichthe adequacy of a given professional service must be judged,nor should this document be applied without consideration ofa projects many unique aspects.The word“standard”in thetitle of this document means only that the document has beenapproved through the ASTM consensus process.2.R
8、eferenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD5088 Practice for Decontamination of Field EquipmentUsed at Waste SitesD5608 Practices for Decontamination of Field EquipmentUsed at Low Level Radioactive Waste SitesD5903 Guide for Planning and Prepari
9、ng for a GroundwaterSampling EventD6089 Guide for Documenting a Groundwater SamplingEventD6452 Guide for Purging Methods for Wells Used forGroundwater Quality InvestigationsD6517 Guide for Field Preservation of GroundwaterSamplesD6564 Guide for Field Filtration of Groundwater SamplesD6771 Practice f
10、or Low-Flow Purging and Sampling forWells and Devices Used for Ground-Water Quality Inves-tigations(Withdrawn 2011)33.Terminology3.1 DefinitionsFor definitions of terms used in thisspecification,refer to Terminology D653.3.2 Definitions of Terms Specific to This Standard:3.2.1 Note that these are ba
11、sic definitions.Information onthe purposes of the various QA samples is provided in section5.3.2.2 quality assurance(QA)actions taken to ensure thatstandards and procedures are adhered to and that deliveredproducts or services meet performance requirements(reference1).3.2.3 Field Duplicatesa set of
12、samples that are collectedclose in time and space and in a manner so that the samples arethought to be representative of the ambient water compositionat the time of collection.3.2.4 Field Split Samples samples obtained by dividingone sample into two or more subsamples either before or aftersample pr
13、eservation and are subject to identical handling andanalysis.1This guide is under the jurisdiction ofASTM Committee D18 on Soil and Rockand is the direct responsibility of Subcommittee D18.21 on Groundwater andVadose Zone Investigations.Current edition approved Jan.1,2015.Published January 2015.Orig
14、inallyapproved in 2004.Last previous edition approved in 2010 as D706904(2010).DOI:10.1520/D7069-04R15.2For 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 Docu
15、ment Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 3.2.5 Field Blank or Ambient Blanklaboratory water thatis exposed to
16、the same environmental conditions as thesamples.3.2.6 Equipment Blank or Rinsate Blankdeionized waterthat is passed sequentially through each component of theequipment system used for collecting and processing theenvironmental samples.3.2.7 Trip Blank or Travel Blanklaboratory-grade waterthat is poured into the sample bottle at the laboratory prior tothe sampling event and remains unopened as is travels with thesample containers to the field and is stored and shipped withthe samples.3.2.8 Microb