Designation:D6234−13(Reapproved2020)StandardTestMethodforShakeExtractionofMiningWastebytheSyntheticPrecipitationLeachingProcedure1ThisstandardisissuedunderthefixeddesignationD6234;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversaprocedurefortheshakeleachingofminingwastecontainingatleast80%drysolids(≤20%moisture)inordertogenerateasolutiontobeusedtodeterminetheinorganicconstituentsleachedunderthespeci-fiedtestingconditionsthatconformtothesyntheticprecipita-tionleachingprocedure(SPLP).1.2Thistestmethodcallsfortheshakingofaknownweightofminingwastewithacidicextractionfluidofaspecifiedcomposition,aswellastheseparationoftheliquidphaseforanalysis.ThepHoftheextractionfluidistoreflectthepHofacidicprecipitationinthegeographicregioninwhichthewastebeingtestedistobedisposed.NOTE1—PossiblesourcesofinformationconcerningthepHoftheprecipitationinthegeographicregionofinterestincludestateandfederalenvironmentalagencies,stateuniversities,libraries,etc.pHvaluesgiveninUSEPAMethod1312,thatare4.2eastoftheMississippiRiverand5.0westoftheMississippiRiverandarebasedonacidprecipitationmaps,areexamplesofvaluesthatcanbeused.IfthepHofthelaboratorywaterislessthanthedesiredpHforthesite,donotusethistestmethod;usePracticeD3987orTestMethodE2242.NOTE2—ThemethodmayalsobesuitableforuseintestingofmineralprocessingwastefrommetalminingprocessoperationsforjurisdictionsthatdonotrequiretheuseofTestMethodE2242.1.3Thistestmethodisintendedtodescribetheprocedureforperformingsinglebatchextractionsonly.Itdoesnotdescribealltypesofsampling,samplepreservation,andanalyticalrequirementsthatmaybeassociatedwithitsappli-cation.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Nootherunitsofmeasurementareincludedinthisstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyc...
