WPCF B n9γ֣-gAzdUR{g2eQit"5f~ SQeb]`rg%(!:Ԕ Ԛ^LDhYN_QCXyꁬwg8ap,N)ʞ,TQTkԗm0JU9*3oK$D5^(s*_^&k-N.ġIO:&2Lxޱοs66MmDκwvMq͆_v^IwhDF8 |_aQTk&WQ&`%'_ʭ3XzeDCFC^o1][PTvAnz]K"Q V^!'v^jzhc|VԑJ7c3'erT/pP9On,̅}GGqa#Y &tVDCwqD󏾔-dx$ #UNy % 0:N^ w4- m/#|xHP LaserJet 2200 Series PCL 60(9 Z6Times New Roman RegularX($USUS.,$jm- V,ertyBarU !USUS.,  _TITLE  StandardOperatingProcedureforPreparationofMethodEvaluation  MaterialsforLeadinDust  AUTHOR(S) ` D.A._Binstock_,E.D._Estes_.,E.Williams,J.D._Neefus_,and L  W.F._Gutknecht_ 8  PERFORMINGORGANIZATIONNAMEANDADDRESS  ` ResearchTriangleInstitute  L  P.O.Box12194  8  ResearchTrianglePark,NC27709-2194 $  SPONSORINGAGENCYNAMEANDADDRESS   AtmosphericResearchandExposureAssessmentLaboratory   OfficeofResearchandDevelopment   U.S.EnvironmentalProtectionAgency p ResearchTrianglePark,NC27711 \ ABSTRACT 4 Theprocedureusedtopreparelead(Pb)industmethodevaluation  p materialsfromreal-worlddustisdescribed.Materialsprepared  \ usingthisprocedurehavebeenfoundsuitableforuseasquality H controlchecksamplesaswellasforevaluationofnewmethods. 4 Proceduresdescribedincludecollectionofmaterials,preliminary   cleanup,homogenization,verification,andpackaging.