Designation:D6028−96(Reapproved2010)´1StandardTestMethod(AnalyticalProcedure)forDeterminingHydraulicPropertiesofaConfinedAquiferTakingintoConsiderationStorageofWaterinLeakyConfiningBedsbyModifiedHantushMethod1ThisstandardisissuedunderthefixeddesignationD6028;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.ε1NOTE—Theunitsstatementin1.4wasrevisededitoriallyinAugust2010.1.Scope1.1Thistestmethodcoversananalyticalprocedurefordeterminingthetransmissivityandstoragecoefficientofaconfinedaquifertakingintoconsiderationthechangeinstorageofwaterinoverlyingorunderlyingconfiningbeds,orboth.Thistestmethodisusedtoanalyzewater-levelorheaddatacollectedfromoneormoreobservationwellsorpiezometersduringthepumpingofwaterfromacontrolwellataconstantrate.Withappropriatechangesinsign,thistestmethodalsocanbeusedtoanalyzetheeffectsofinjectingwaterintoacontrolwellataconstantrate.1.2ThisanalyticalprocedureisusedinconjunctionwithTestMethodD4050.1.3Limitations—ThevaliduseofthemodifiedHantushmethod(1)2islimitedtothedeterminationofhydraulicpropertiesforaquifersinhydrogeologicsettingswithreason-ablecorrespondencetotheassumptionsoftheHantush-Jacobmethod(TestMethodD6029)withtheexceptionthatinthiscasethegainorlossofwaterinstorageintheconfiningbedsistakenintoconsideration(see5.1).Allpossiblecombinationsofimpermeablebedsandsourcebeds(forexample,bedsinwhichtheheadremainsuniform)areconsideredonthedistalsideoftheleakybedsthatconfinetheaquiferofinterest(seeFig.1).1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationsprior...
