ASTM_D_7758_-_11.pdf

Designation:D775811Standard Practice forPassive Soil Gas Sampling in the Vadose Zone for SourceIdentification,Spatial Variability Assessment,Monitoring,and Vapor Intrusion Evaluations1This standard is issued under the fixed designation D7758;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 PurposeThis practice covers standardized techniquesfor passively collecting soil gas samples from the vadose zoneand is to be used in conjunction with Guide D5314.1.2 ObjectivesObjectives guiding the development of thispractice are:(1)to synthesize and put in writing good com-mercial and customary practice for conducting passive soil gassampling,(2)to ensure that the process for collecting andanalyzing passive soil gas samples is practical and reasonable,and(3)to provide standard guidance for passive soil gassampling performed in support of source identification,spatialvariability/extentdeterminations,siteassessment,sitemonitoring,and vapor intrusion investigations.1.3 This practice does not address requirements of anyfederal,state,or local regulations or guidance or both withrespect to soil gas sampling.Users are cautioned that federal,state,and local guidance may impose specific requirementsthat differ from those of this practice.1.4 UnitsThe values stated in SI units are to be regardedas standard.No other units of measurement are included in thisstandard.1.5 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 and health practices and determine the applica-bility of regulatory limitations prior to use.1.6 This practice offers a set of instructions for performingone or more specific operations.This document cannot replaceeducation or experience and should be used in conjunctionwith professional judgment.Not all aspects of this practice maybe applicable in all circumstances.This ASTM standard 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“Standard”in thetitle means only that the document has been approved throughthe ASTM consensus process.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD1356 Terminology Relating to Sampling and Analysis ofAtmospheresD2216 Test Methods for Laboratory Determination of Water(Moisture)Content of Soil and Rock by MassD2487 Practice for Classification of Soils for EngineeringPurposes(Unified Soil Classification System)D3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4597 Practice for Sampling Workplace Atmospheres toCollect Gases or Vapors with Solid Sorbent DiffusiveSamplersD5088 Practice for Decontamination of Field EquipmentUsed at Waste SitesD5314 Guide for Soil Gas Monitoring in the Vadose ZoneD5792 Practice for Generation of Environmental Data Re-lated to Waste Management Activities:Development ofData Quality ObjectivesD6196 Practice for Selection of Sorbents,Sampling,andThermal Desorption Analysis Procedures for Volatile Or-ganic Compounds in AirD6311 Guide for Generation of Environmental Data Relatedto Waste Management Activities:Selection and Optimiza-tion of Sampling DesignE2600 Guide for Vapor Encroachment Screening on Prop-erty Involved in Real Estate Transactions1This practice is under the jurisdiction of ASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.21 on Groundwater andVadose Zone Investigations.Current edition approved Dec.1,2011.Published January 2012.DOI:10.1520/D7758-11.2For 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 States1 2.2 U.S.EPA Methods3Method 8260C Volatile Organic Compounds by GasChromatography/Mass Spectrometry(GC/MS)Method 8270C Semivolatile Organic Compounds by GasChromatography/Mass SpectrometryMethod TO-17 Determination of Volatile Organic Com-pounds in Ambient Air Using Active Sampling OntoSorbent Tubes3.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 This section provides definitions and descriptions ofterms used in or related to this practice.A list of acronyms anda list of symbols are also included.The terms are an integralpart of this practice and are critical to an understanding of thepractice and its