1、Designation:D766312(Reapproved 2018)1Standard Practice forActive Soil Gas Sampling in the Vadose Zone for VaporIntrusion Evaluations1This standard is issued under the fixed designation D7663;the number immediately following the designation indicates the year oforiginal adoption or,in the case of rev
2、ision,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.1NOTEReapproved with editorial change in February 2018.1.Scope1.1 PurposeThis practice covers standardized technique
3、sfor actively collecting soil gas samples from the vadose zonebeneath or near dwellings and other buildings.1.2 ObjectivesObjectives guiding the development of thispractice are:(1)to synthesize and put in writing good com-mercial and customary practice for active soil gas sampling,(2)to provide an i
4、ndustry standard for soil gas sampling performedin support of vapor intrusion evaluations that is practical andreasonable.1.3 This practice allows a variety of techniques to be usedfor collecting soil gas samples because different techniquesmay offer certain advantages for specific applications.Thre
5、etechniques are presented:sampling at discrete depths,samplingover a small screened interval,and sampling using permanentvapor monitoring wells.1.4 Some of the recommendations require knowledge ofpressure differential and tracer gas concentration measure-ments.1.5 The values stated in SI units shall
6、 be regarded asstandard.Other units are shown for information only.1.6 This practice does not address requirements of any local,regional,state,provincial,or national regulations or guidance,or both,with respect to soil gas sampling.Users are cautionedthat local,regional,state,provincial,or national
7、guidance mayimpose specific requirements that differ from those of thispractice.1.7 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 practi
8、ces and deter-mine the applicability of regulatory limitations prior to use.1.8 This practice offers a set of instructions for performingone or more specific operations.This document cannot replaceeducation or experience and should be used in conjunction withprofessional judgment.Not all aspects of
9、this practice may beapplicable in all circumstances.This ASTM practice is notintended to represent or replace the standard 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“S
10、tandard”in thetitle means only that the document has been approved throughthe ASTM consensus process.1.9 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of Internation
11、al Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD854 Test Methods for Specific Gravity of Soil Solids byWater PycnometerD1356 T
12、erminology Relating to Sampling and Analysis ofAtmospheresD1946 Practice for Analysis of Reformed Gas by GasChromatographyD2216 Test Methods for Laboratory Determination of Water(Moisture)Content of Soil and Rock by MassD2487 Practice for Classification of Soils for EngineeringPurposes(Unified Soil
13、Classification System)D3404 Guide for Measuring Matric Potential in VadoseZone Using TensiometersD4696 Guide for Pore-Liquid Sampling from the Vadose1This practice is under the jurisdiction of ASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.21 on Groundwater a
14、ndVadose Zone Investigations.Current edition approved Feb.15,2018.Published July 2018.Originallyapproved in 2011.Last previous edition approved in 2011 as D766311.DOI:10.1520/D7663-12R18E01.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at servicea
15、stm.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 interna
16、tionally 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 Zone(Withdrawn 2017)3D4700 Guide for Soil Sampling from the Vadose ZoneD5088 Practice for Decontamination of Field EquipmentUsed at Waste SitesD5092 Practice for Design and Installation of GroundwaterMonitoring WellsD5314 Guide for Soil Gas Monitoring
