ASTM_D_6724_-_04_2010.pdf

Designation:D672404(Reapproved 2010)Standard Guide forInstallation of Direct Push Groundwater Monitoring Wells1This standard is issued under the fixed designation D6724;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 describes various direct push groundwatermonitoring wells and provides guidance on their selection andinstallation for obtaining representative groundwater samplesand monitoring water table elevations.Direct push wells areused extensively for monitoring groundwater quality in uncon-solidated formations.This guide also includes discussion ofsome groundwater sampling devices which can be permanentlyemplaced as monitoring wells.1.2 This guide does not address the single event sampling ofgroundwater using direct push water samplers as presented inGuide D6001.The methods in this guide are often used withother tests such as direct push soil sampling(Guide D6282)and the cone penetrometer test(Guide D6067).The presentguide does not address the installation of monitoring wells byrotary drilling methods such as those presented in PracticeD5092.Techniques for obtaining groundwater samples frommonitoring wells are covered in Guide D4448.1.3 The installation of direct push groundwater monitoringwells is limited to unconsolidated soils and sediments includ-ing clays,silts,sands,and some gravels and cobbles.Penetra-tion may be limited,or damage may occur to equipment,incertain subsurface conditions;some of which are discussed in5.5.Information in this guide is limited to groundwatermonitoring in the saturated zone.1.4 This guide does not purport to comprehensively addressall of the methods and issues associated with monitoring wellinstallation.Users should seek input from qualified profession-als for the selection of proper equipment and methods thatwould be the most successful for their site conditions.Othermethods may be available for monitoring well installation,andqualified professionals should have flexibility to exercisejudgement concerning alternatives not covered in this guide.The practice described in this guide is current at the time ofissue;however,new,alternative,and innovative methods maybecome available prior to revisions.Therefore,users shouldconsult with manufacturers or producers prior to specifyingprogram requirements.1.5 This guide offers an organized collection of informationor a series of options and does not recommend a specific courseof action.This document cannot replace education or experi-ence and should be used in conjunction with professionaljudgement.Not all aspects of this guide may be applicable inall circumstances.This ASTM standard is not intended torepresent or replace the standard of care by which the adequacyof a given professional service must be judged,nor should thisdocument be applied without consideration of a projects manyunique aspects.The word“Standard”in the title of thisdocument means only that the document has been approvedthrough the ASTM consensus process.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 and health practices and determine the applica-bility of regulatory requirements prior to use.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD4448 Guide for Sampling Ground-Water Monitoring WellsD4750 Test Method for Determining Subsurface LiquidLevels in a Borehole or Monitoring Well(ObservationWell)(Withdrawn 2010)3D5088 Practice for Decontamination of Field EquipmentUsed at Waste SitesD5092 Practice for Design and Installation of GroundwaterMonitoring WellsD5254 Practice for Minimum Set of Data Elements toIdentify a Ground-Water SiteD5299 Guide for Decommissioning of Groundwater Wells,Vadose Zone Monitoring Devices,Boreholes,and OtherDevices for Environmental Activities1This 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 July 1,2010.Published September 2010.Originallyapproved in 2001.Last previous editon approved in 2004 as D672404.DOI:10.1520/D6724-04R10.2For 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.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 D5434 Guide for Field Logging of Subsurface Explorationsof Soil and RockD5474 Guide for S