PCB FACT SHEET.doc
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PCB FACT SHEET.doc

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PCBFACTSHEETYankeeRoweMay2000PCBsPolychlorinatedbiphenyls(PCBs)areafamilyofman-madechemicalsthatweremanufacturedintheUnitedStatesfrom1929to1977.Becauseoftheirstability,resistancetofireandelectricalinsulatingproperties,PCBswereprimarilyusedinthegreatestquantitiesinelectricaltransformers,capacitors,heattransfersystemsandhydraulicsystems.Lesserquantitieswereusedinvoltageregulators,adhesives,caulkingcompounds,inks,lubricants,paints,sealants,carbonlesscopypaper,coatings,electricalswitches,plasticizers,circuitbreakers,dustcontrolagents,andolderfluorescentlightingfixtures.ManufacturingofPCBsceasedintheUnitedStatesinOctober1977afteritwasdeterminedtheywereaccumulatingintheenvironmentanddidnoteasilybreakdown.PCB-CONTAININGPAINTATYANKEEROWEAspartofdecommissioning,aradiologicalandnon-radiologicalhazardousmaterialassessmentoftheplantsitewasconductedandiscontinuing.Theassessmentidentifiedthattheinteriorandexteriorofseveralplantstructureshad,likemanyindustrialfacilities,beenpaintedwithPCB-containingpaintpriorto1977.UnlikePCBsinliquids,suchastransformeroil,thesePCBsaresolidandpartofthedriedpaint.InteriorSurfaces:TheU.S.EnvironmentalProtectionAgency(EPA)andtheMassachusettsDepartmentofEnvironmentalProtection(MADEP)regulatethecontrolandremediationofPCBsinMassachusetts.YankeehasworkedcloselywithbothagenciestoensuretheappropriatehandlingofPCB-containingpaintthatexceededestablishedPCBlimitsoninteriorsurfacesasinteriorportionsoftheplantweredismantledandcleaned.Someoftheinteriorpaintedsurfacesareinareasoftheplantthatcontainedradioactivematerials.ExteriorSurfaces:Dismantlementofmostofthebuildingsontheplantsitewillnottakeplaceuntilafter2001whentheusedfuelhasbeentransferredfromthespentfuelpooltoanabovegrounddrystoragefacility.Inpreparationforfuturedismantlement,YankeehasbeguntoremovePCB-containingpaintthatexceedsestablishedPCBlimitsontheexteriorofselectedbuildings.Forexample,paintthatexceededestablishedPCBlimitswasremovedfromexteriorsurfacesoftheTurbineBuilding.Becauseofi