Designation:D6170−97(Reapproved2010)StandardGuideforSelectingaGroundwaterModelingCode1ThisstandardisissuedunderthefixeddesignationD6170;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoversasystematicapproachtothedetermi-nationoftherequirementsforandtheselectionofcomputercodesusedinagroundwatermodelingproject.Duetothecomplexnatureoffluidflowandbioticandchemicaltransportinthesubsurface,manydifferentgroundwatermodelingcodesexist,eachhavingspecificcapabilitiesandlimitations.Furthermore,awidevarietyofsituationsmaybeencounteredinprojectswheregroundwatermodelsareused.Determiningthemostappropriatecodeforaparticularapplicationrequiresathoroughanalysisoftheproblemathandandtherequiredandavailableresources,aswellasdetaileddescriptionofthefunctionalityofcandidatecodes.1.2Thecodeselectionprocessdescribedinthisguideconsistsofsystematicanalysisofprojectrequirementsandcarefulevaluationofthematchbetweenprojectneedsandthecapabilitiesofcandidatecodes.Insufficientlydocumentedcapabilitiesofcandidatecodesmayrequireadditionalanalysisofcodefunctionalityaspartofthecodeselectionprocess.Fig.1isprovidedtoassistwiththedeterminationofprojectneedsintermsofcodecapabilities,and,ifnecessary,todeterminecodecapabilities.1.3Thisguideisoneofaseriesofguidesongroundwatermodelingcodesandtheirapplications,suchasGuidesD5447,D5490,D5609,D5610,D5611,D5718,andD6025.1.4Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisguidecannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgement.Notallaspectsofthisguidemaybeapplicableinallcircumstances.Thisguideisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisguidebeappliedwithoutconsid...
