Designation:D5447−04(Reapproved2010)StandardGuideforApplicationofaGroundwaterFlowModeltoaSite-SpecificProblem1ThisstandardisissuedunderthefixeddesignationD5447;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoverstheapplicationandsubsequentdocu-mentationofagroundwaterflowmodeltoaparticularsiteorproblem.Inthiscontext,“groundwaterflowmodel”referstotheapplicationofamathematicalmodeltothesolutionofasite-specificgroundwaterflowproblem.1.2Thisguideillustratesthemajorstepstotakeindevel-opingagroundwaterflowmodelthatreproducesorsimulatesanaquifersystemthathasbeenstudiedinthefield.Thisguidedoesnotidentifyparticularcomputercodes,software,oralgorithmsusedinthemodelinginvestigation.1.3Thisguideisspecificallywrittenforsaturated,isothermal,groundwaterflowmodels.Theconceptsareappli-cabletoawiderangeofmodelsdesignedtosimulatesubsur-faceprocesses,suchasvariablysaturatedflow,flowinfrac-turedmedia,density-dependentflow,solutetransport,andmultiphasetransportphenomena;however,thedetailsoftheseotherprocessesarenotdescribedinthisguide.1.4Thisguideisnotintendedtobeallinclusive.Eachgroundwatermodelisuniqueandmayrequireadditionalproceduresinitsdevelopmentandapplication.Allsuchaddi-tionalanalysesshouldbedocumented,however,inthemodelreport.1.5Thisguideisoneofaseriesofstandardsongroundwa-termodelapplications.Otherstandardshavebeenpreparedonenvironmentalmodeling,suchasPracticeE978.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortous1.7Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisdocumentcannotreplaceeducationorex...
