Designation:D6030−15StandardGuideforSelectionofMethodsforAssessingGroundwaterorAquiferSensitivityandVulnerability1ThisstandardisissuedunderthefixeddesignationD6030;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisguidecoversinformationneededtoselectoneormoremethodsforassessingthesensitivityofgroundwateroraquifersandthevulnerabilityofgroundwateroraquiferstowater-qualitydegradationbyspecificcontaminants.1.2Thisguidemaynotbeall-inclusive;itoffersaseriesofoptionsanddoesnotspecifyacourseofaction.Itshouldnotbeusedasthesolecriterionorbasisofcomparison,anddoesnotreplaceprofessionaljudgment.1.3Thisguideistobeusedforevaluatingsensitivityandvulnerabilitymethodsforpurposesofland-usemanagement,water-usemanagement,groundwaterprotection,governmentregulation,andeducation.Thisguideincorporatesdescriptionsofgeneralclassesofmethodsandselectedexampleswithintheseclassesbutdoesnotadvocateaparticularmethod.1.4Limitations—Theutilityandreliabilityofthemethodsdescribedinthisguidedependontheavailability,nature,andqualityofthedatausedfortheassessment;theskill,knowledge,andjudgmentoftheindividualsselectingthemethod;thesizeofthesiteorregionunderinvestigation;andtheintendedscaleofresultingmapproducts.Becausethesemethodsarebeingcontinuallydevelopedandmodified,theresultsshouldbeusedwithcaution.Thesetechniques,whetherornottheyprovideaspecificnumericvalue,providearelativerankingandassessmentofsensitivityorvulnerability.However,arelativelylowsensitivityorvulnerabilityforanareadoesnotprecludethepossibilityofcontamination,nordoesahighsensitivityorvulnerabilitynecessarilymeanthatgroundwateroranaquiferiscontaminated.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Allobservedandcalculatedvaluesshallconformtotheguidelinesfors...
