ASTM_D_7242_-_D_7242M_-_06_2013e1.pdf

Designation:D7242/D7242M06(Reapproved 2013)1Standard Practice forField Pneumatic Slug(Instantaneous Change in Head)Teststo Determine Hydraulic Properties of Aquifers with DirectPush Groundwater Samplers1This standard is issued under the fixed designation D7242/D7242M;the number immediately following the designation indicates theyear of original adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of lastreapproval.A superscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEDesignation was editorially corrected to match units information in December 2013.1.Scope*1.1 This standard practice covers the field methods used toconduct an instantaneous change in head(slug)test whenpneumatic pressure is used to initiate the change in headpressure within the well or piezometer.While this practicespecifically addresses use of pneumatic initiation of slug testswith direct push tools these procedures may be applied to wellsor piezometers installed with rotary drilling methods whenappropriate.1.2 This standard practice is used to obtain the required fielddata for determining hydraulic properties of an aquifer or aspecified vertical interval of an aquifer.Field data obtainedfrom application of this practice are modeled with appropriateanalytical procedures(Test Methods D4104,D5785,D5881,D5912,Ref(1)2).1.3 The values stated in either SI units or inch-pound unitsare to be regarded separately as standard.The values stated ineach system may not be exact equivalents;therefore,eachsystem shall be used independently of the other.Combiningvalues from the two systems may result in non-conformancewith the standard.1.4 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.1.5 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 that the document has been approved through theASTM consensus process.2.Referenced Documents2.1 ASTM Standards:3D653 Terminology Relating to Soil,Rock,and ContainedFluidsD2434 Test Method for Permeability of Granular Soils(Constant Head)(Withdrawn 2015)4D3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4104 Test Method(Analytical Procedure)for DeterminingTransmissivity of Nonleaky Confined Aquifers by Over-damped Well Response to Instantaneous Change in Head(Slug Tests)D5084 Test Methods for Measurement of Hydraulic Con-ductivity of Saturated Porous Materials Using a FlexibleWall PermeameterD5092 Practice for Design and Installation of GroundwaterMonitoring WellsD5521 Guide for Development of Groundwater MonitoringWells in Granular AquifersD5785 Test Method for(Analytical Procedure)for Deter-mining Transmissivity of Confined Nonleaky Aquifers byUnderdamped Well Response to Instantaneous Change inHead(Slug Test)D5856 Test Method for Measurement of Hydraulic Conduc-tivityofPorousMaterialUsingaRigid-Wall,1This 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.1,2013.Published January 2014.Originallyapproved in 2006.Last previous edition approved in 2006 as D7242 06.DOI:10.1520/D7242-06R13.2The boldface numbers in parentheses refer to the list of references at the end ofthis standard.3For 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.4The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Compaction-Mold PermeameterD5881 Test Method for(Analytical Procedure)DeterminingTransmissivity of Confined Nonleaky Aquifers by Criti-cally Damped Well Response to Instantaneous Change inHead(Slug)D5912 Test Method for(Analytical Procedure)DeterminingHydraulic Conductivity of an Unconfined Aquifer byOverdamped Well Response to Instantaneous Change inHead(Slug)(Withdrawn 2013)4D6001 Guide for Direct-Push Groundw