Designation:D5111−12(Reapproved2020)StandardGuideforChoosingLocationsandSamplingMethodstoMonitorAtmosphericDepositionatNon-UrbanLocations1ThisstandardisissuedunderthefixeddesignationD5111;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguideassistsindividualsoragenciesinidentifyingsuitablelocationsandchoosingappropriatesamplingstrategiesformonitoringatmosphericdepositionatnon-urbanlocations.Itdoesnotpurporttodiscussallaspectsofdesigningatmo-sphericdepositionmonitoringnetworks.1.2Theguideissuitableforuseinobtainingestimatesofthedominantinorganicconstituentsandtracemetalsfoundinacidicdeposition.Itaddressesbothwetanddrydepositionandincludescloudwater,fogandsnow.1.3Theguideisbestusedtodetermineestimatesofatmosphericdepositioninnon-urbanareasalthoughmanyofthesamplingmethodspresentedcanbeappliedtourbanenvironments.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D1356TerminologyRelatingtoSamplingandAnalysisofAtmospheresD1357PracticeforPlanningtheSamplingoftheAmbientAtmosphereD3249PracticeforGeneralAmbientAirAnalyzerProce-duresD4841PracticeforEstimationofHoldingTimeforWaterSamplesContainingOrganicandInorganicConstituentsD5012PracticeforPreparationofMaterialsUsedfortheCollectionandPreservationofAtmosphericWetDeposi-tion3.Terminology3.1Definitions—Fordefinitionsoftermsusedinthisguide,refertoTerminologyD1356.3.2DefinitionsofTermsSpecifictoThisStandard:3.2.1collocatedsampling,n—th...
