Designation:D6249−06(Reapproved2011)StandardGuideforAlkalineStabilizationofWastewaterTreatmentPlantResiduals1ThisstandardisissuedunderthefixeddesignationD6249;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope*1.1Thisdocumentprovidesguidanceforuseofreactivealkalinematerials(quicklime,hydratedlime,highlimeflyash,orotherbyproducts)fortreatingwastewatersolids(biosolids)toreducepathogenlevelsandachievecompliancewithregu-latoryrequirements.Federal(40CFR,Part503)regulationsforuseordisposalofbiosolidsbecameeffectiveonMarch22,1993;refertoUSEPAregulationsandguidancedocumentsforinformationonothertreatmentprocessesorforspecificre-quirementsforuseordisposalofbiosolids.1.2Additionalrequirementsmaybeimposedbyindividualstates,andtheseareavailablethroughstateregulatoryagenciesthatissuepermitsfortreatmentanduseordisposal,orboth,ofbiosolids.1.3Thisguidedoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2C25TestMethodsforChemicalAnalysisofLimestone,Quicklime,andHydratedLimeC110TestMethodsforPhysicalTestingofQuicklime,HydratedLime,andLimestone2.2USEPAPublication:Title40,CodeofFederalRegulations(CFR),Part503,StandardsfortheUseorDisposalofSewageSludge;FinalRules,58FR9248-940433.Terminology3.1Acronyms—Thesearedefinedbyoperatingparameters(forexample,time,temperature)whosevaluesmustbemetinorderforbiosolidstobeusedinvariouswaysasanutrientsource/soilconditioner.Ref.40CFRPart257.3.1.1PFRP—ProcessestoFurtherReducePathogens(equivalentto503ClassA).3.1.2PSRP—ProcessestoSignificantlyReducePathogens(equivalentto503ClassB).4.SignificanceandUse4.1Operatorsofpowerandotherplants...
