Designation:D6036−96(Reapproved2014)StandardGuideforDisplayingtheResultsofChemicalAnalysesofGroundwaterforMajorIonsandTraceElements—UseofMaps1ThisstandardisissuedunderthefixeddesignationD6036;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguideoffersaseriesofoptionsbutdoesnotspecifyacourseofaction.Itshouldnotbeusedasthesolecriterionorbasisofcomparisonanddoesnotreplaceorrelieveprofes-sionaljudgment.1.2Thisguidecoversmethodsthatdisplay,asmappedinformation,thechemicalconstituentsofgroundwatersamples.Detailsrequiredbytheinvestigatortousefullythemethodsarefoundinthelistedreferences.1.2.1Theuseofmapstodisplaywater-qualitydataareacommontechniquetoassistintheinterpretationofthechem-istryofwaterinaquifers,astheareallydistributedvaluescanbeeasilyrelatedtothephysicallocalitybytheinvestigator.1.2.2Thedistributioninanaquiferofchemicalconstituentsfromtwowatersourcesorofliquidsofdifferentdensitiesmaybedifficulttoillustrateexplicitlyonatwo-dimensionalmapbecauseofstratificationinthethirddimension.Also,theadditionofaverticalcrosssectionmayberequired(see4.4).1.3Manygraphictechniqueshavebeendevelopedbyin-vestigatorstoassistinsummarizingandinterpretingrelateddatasets.Thisguideisthefourthdocumenttoinformthehydrologistsandgeochemistsabouttraditionalmethodsfordisplayinggroundwaterchemicaldata.1.3.1Theinitialguide(GuideD5738)describedthecat-egoryofwater-analysisdiagramsthatusepatternandpictorialmethodsasabasisfordisplayingeachoftheindividualchemicalcomponentsdeterminedfromtheanalysisofasinglesampleofnaturalgroundwater.1.3.2Thesecondguide(GuideD5754)describedthecat-egoryofwater-analysisdiagramsthatusetwo-dimensionaltrilineargraphstodisplay,onasinglediagram,thecommonchemicalcomponentsfromtwoormoreanalysesofnaturalgroundwater.1.3.3Thethirdguide(GuideD5877)presentedmeth...
