Designation:D4050−14StandardTestMethodfor(FieldProcedure)forWithdrawalandInjectionWellTestingforDeterminingHydraulicPropertiesofAquiferSystems1ThisstandardisissuedunderthefixeddesignationD4050;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thistestmethodcoversthefieldprocedureforselectingwelllocations,controllingchange(dischargeorinjection)rates,andmeasuringwaterlevelsusedtoanalyzethehydraulicpropertiesofanaquiferoraquifersandadjacentconfiningbeds.1.2Thistestmethodisusedinconjunctionwithananalyti-calproceduresuchasTestMethodsD4105orD4106toevaluatethedataanddetermineaquiferproperties.1.3TheappropriatefieldandanalyticalproceduresareselectedasdescribedinGuideD4043.1.4Limitations—ThelimitationsofthistestmethodareprimarilyrelatedtothecorrespondencebetweenthefieldsituationdeterminedbythistestmethodandthesimplifyingassumptionsoftheanalyticalTestMethodsD4105orD4106andD4043.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.1.6AllobservedandcalculatedvaluesshallconformtotheguidelinesforsignificantdigitsandroundingestablishedinPracticeD6026.1.6.1Theproceduresusedtospecifyhowdataarecollected/recordedorcalculated,inthisstandardareregardedastheindustrystandard.Inaddition,theyarerepresentativeofthesignificantdigitsthatgenerallyshouldberetained.Theproce-duresuseddonotconsidermaterialvariation,purposeforobtainingthedata,specialpurposestudies,oranyconsider-ationsfortheuser’sobjectives;anditiscommonpracticetoincreaseorreducesignificantdigitsofreporteddatatobecommensuratewiththeseconsiderations.Itisbeyondthescopeofthisstandardtoconsidersignificantdigitsusedinanalyticalmethodsforengineeringdesign.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhea...
