Designation:D6538−12StandardGuideforSamplingWastewaterWithAutomaticSamplers1ThisstandardisissuedunderthefixeddesignationD6538;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoverstheselectionanduseofautomaticwastewatersamplersincludingproceduresfortheiruseinobtainingrepresentativesamples.Automaticwastewatersam-plersareintendedfortheunattendedcollectionofsamplesthatarerepresentativeoftheparametersofinterestinthewaste-waterbody.Whilethisguideprimarilyaddressesthesamplingofwastewater,thesameautomaticsamplersmaybeusedtosampleprocessstreamsandnaturalwaterbodies.1.2Theguidedoesnotaddressgeneralguidelinesforplanningwastesamplingactivities(seeGuideD4687),devel-opmentofdataqualityobjectives(seePracticeD5792),thedesignofmonitoringsystemsanddeterminationofthenumberofsamplestocollect(seePracticeD6311),operationaldetailsofanyspecifictypeofsampler,in-situmeasurementofparametersofinterest,dataassessmentandstatisticalinterpre-tationofresultantdata(seeGuideD6233),orsamplingandfieldqualityassurance(seeGuideD5612).Italsodoesnotaddresssamplinggroundwater.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.3.1Exception—Theinch-poundunitsgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D4687GuideforGeneralPlanningofWasteSamplingD5088PracticeforDecontaminationofFieldEquipmentUsedatWasteSitesD5612GuideforQualityPlanningandFieldImplementa-tionofaWaterQualityMeasurementProgramD5681TerminologyforWasteandWasteManagementD5792PracticeforGeneratio...
