Designation:D4043−17StandardGuideforSelectionofAquiferTestMethodinDeterminingHydraulicPropertiesbyWellTechniques1ThisstandardisissuedunderthefixeddesignationD4043;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisguidecoversanintegralpartofaseriesofstandardsthatarebeingpreparedontheinsitudeterminationofhydraulicpropertiesofaquifersystemsbysingle-ormultiple-welltests.Thisguideprovidesguidancefordevelop-mentofaconceptualmodelofafieldsiteandselectionofananalyticaltestmethodfordeterminationofhydraulicproper-ties.Thisguidedoesnotestablishafixedprocedurefordeterminationofhydrologicproperties.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3Limitations—Welltechniqueshavelimitationsinthedeterminationofhydraulicpropertiesofgroundwaterflowsystems.Theselimitationsarerelatedprimarilytothesimpli-fyingassumptionsthatareimplicitineachtestmethod.Theresponseofanaquifersystemtostressisnotunique;therefore,thesystemmustbeknownsufficientlytoselecttheproperanalyticalmethod.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.1.5Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepre-sentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationofaproject’smanyuniqueaspects.Theword“Standard”inthetitleof...
