General Guidelines Asbestos RemovAl And disposAl …...GENERAL GUIDELINES: ASBESTOS REMOVAL AND DISPOSAL Executive Summary This document describes various types of asbestos, situations

General Guidelines AsbestosRemovAlAnddisposAl

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Please also refer to WSCC's Asbestos Abatement Code of Practice

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GENERAL GUIDELINES ASBESTOSREMOVALANDDISPOSAL

J40532 Asbestos Booklet.indd 1 15/02/10 11:28 AM

GENERAL GUIDELINES: ASBESTOS REMOVAL AND DISPOSAL

Table of Contents ExecutiveSummary GlossaryofTerms

1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 WhenShouldTheseGuidelinesBeConsulted? . . . . . . . . . . 8 HealthAndSafetyLegislationForAsbestosintheNWT . . . . 9 EnvironmentalLegislationForAsbestosintheNWT . . . . . . 92.0 InspectionAndDetermination OfThePresenceofAsbestos . . . . . . . . . . . . . . . . . . . . 103.0 PWSAsbestosManagementProgram . . . . . . . . . . . . . . 124.0 ProjectPlanning . . . . . . . . . . . . . . . . . . . . . . . . . . 135.0 InstructionAndTraining . . . . . . . . . . . . . . . . . . . . . 14

6.0 WSCCNotification . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.0 SpecificRequirements . . . . . . . . . . . . . . . . . . . . . . . 16

7.1 IsolationofWorkArea . . . . . . . . . . . . . . . . . . . . . . . 167.2 AirMonitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.2.1 BackgroundAirTesting . . . . . . . . . . . . . . . . . . . . . . 18 7.2.1.1 OngoingAirTestingDuringAbatement . . . . . . . . . . . . . 18 7.2.1.2 FinalAirTesting . . . . . . . . . . . . . . . . . . . . . . . . . . 19 7.2.2 FinalAirTesting:ExteriorAreas . . . . . . . . . . . . . . . . . 19 7.2.3 FinalAirTesting:GloveBagProcedure . . . . . . . . . . . . . 19 7.2.3.1 FailureofFinalAirTests . . . . . . . . . . . . . . . . . . . . . . 197.3 PersonalProtectiveEquipment . . . . . . . . . . . . . . . . . . 207.4 PersonalHygiene . . . . . . . . . . . . . . . . . . . . . . . . . . 217.5 WasteDisposal . . . . . . . . . . . . . . . . . . . . . . . . . . . 227.6 Cleanup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

8.0 Class1(LowRisk)AsbestosRemoval TasksAndProceedures . . . . . . . . . . . . . . . . . . . . . . 248.1 Class1–Description . . . . . . . . . . . . . . . . . . . . . . . . 248.2 Class1–Procedures . . . . . . . . . . . . . . . . . . . . . . . . 25

9.0 Class2(ModerateRisk)AsbestosRemoval TasksAndProcedures . . . . . . . . . . . . . . . . . . . . . . . 26

9.1 Class2–Description . . . . . . . . . . . . . . . . . . . . . . . . 269.2 Class2–Procedures . . . . . . . . . . . . . . . . . . . . . . . . 26



10.0 Class3(HighRisk)AsbestosRemoval TasksandProcedures . . . . . . . . . . . . . . . . . . . . . . . 28 10.1 Class3–Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 10.2 Class3–Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 10.2.1 Class3–Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 10.2.2 AsbestosRemoval(Note:HighRiskRemovalistobe conductedbythirdpartycontractors,notbyPublicWorks andServicesStaff) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 10.2.3 CleanupofRemovalArea . . . . . . . . . . . . . . . . . . . . . . . . . . 34 10.2.4 ClearanceSampling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 10.2.5 Encapsulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

11.0 RemovalofResilientFloorCoverings . . . . . . . . . . . . . . 36 11.1 GeneralRulesforRemovalofResilientFloorCovering . . . . . 36 11.2 RemovalofFully-AdheredResilientSheetFlooring . . . . . . . . 37 11.3 RemovalofLoose-LayorPeripherally-AdheredResilient SheetFlooring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 11.4 RemovalofResilientTile . . . . . . . . . . . . . . . . . . . . . . . . . . 41

12.0 RemovalofACMVermiculiteInsulation . . . . . . . . . . . . 43 12.1 WetRemoval(highrisk) . . . . . . . . . . . . . . . . . . . . . . . . . . 43 12.2 VacuumRemoval(highrisk) . . . . . . . . . . . . . . . . . . . . . . . 44

13.0 AsbestosRemovalUnderColdConditions . . . . . . . . . . . 45 13.1 NormalTechniquesthatWillNotWorkUnder ColdConditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 13.2 WhatWillWorkUnderFreezingConditions . . . . . . . . . . . . 46 13.3 Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 13.4 Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

14.0 Appendices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 APPENDIX1-ListofProductsThatMayContainAsbestos . 49 APPENDIX2-ContactsList . . . . . . . . . . . . . . . . . . . 50 APPENDIX3-ListofLaboratoriesforSampleAnalysis . . . . 53 APPENDIX4-ContractorNotificationDocument . . . . . . 54 APPENDIX5-EmergencyRepairs,Response&Procedures . 55 APPENDIX6-References . . . . . . . . . . . . . . . . . . . . 56 APPENDIX7-Acknowledgements,Disclaimer . . . . . . . . 57



Executive SummaryThisdocumentdescribesvarioustypesofasbestos,situationsinwhichasbestosislikelytobeencountered,healthhazards,legislation,andrequirementsforsafeasbestosremoval,includingmonitoring,airtesting,personalhygiene,wastedisposal,andcleanup .

Asbestosisafibrousmineralcommonlyusedasacomponentinmanymaterialsbecauseofitsstrengthandheat-resistantproperties .Itwaswidelyusedinavarietyofbuildingmaterialsuntil1987 .Alltypesofasbestoshavebeenconfirmedtocausecancer .Inhalationofasbestosfibresmayresultinasbestosis,aprogressivefibrosisoflungtissueormesothelioma .Diseasescausedbyasbestosmaynotmanifestthemselvesfor15to50yearsafterexposure .

MostasbestosinCanadaisusedtomanufactureasbestoscementsheeting .Lesseramountsofasbestosareusedforinsulationaroundboilersandpiping .Asbestosreleaseoccurswhenthematerialhasbeendamagedorwhenbuildingsarebeingdemolished .

IntheNWT,theAsbestosSafetyRegulationsestablishesrequirementsforworkingwithasbestos-containingmaterials(ACM) .TheWorker’sSafetyandCompensationCommission(WSCC)hassetexposurelimitsforworkers .PWShascompletedaninventoryofPWSassetscontainingasbestosandhasimplementedanAsbestosManagementProgram,whichdescribesthestepstobetakenwhendealingwithasbestosinabuilding .

ExecutiveSummary



Specialprecautionsneedtobetakentoensuretheprotectionofbothworkersandbuildingoccupantswhenremovingasbestosfromabuilding .Samplingisrequired,anddependingonthetypeofasbestos,extensivemeasuresforasbestosremovalmayberequired .

Allformsofasbestosshouldbehandledonlybypersonshavingtheappropriatetraining(recognisedbytheauthorityhavingjurisdiction)andwearingtheappropriatePersonalProtectiveEquipment .Workershandlingfriableasbestosmustweardisposablefullbodyprotectionsuitsandrespiratorswiththecorrectfilters,gloves,boots,etc .Adecontaminationunitmayberequiredtoensureanegativepressureintheworkarea .Wettingagentswillbeneededtoensureasbestosreleaseisminimized .

Asbestosmustbedisposedofinaregisteredsecurelandfill,inaccordancewithregulatoryrequirements .



Amended Water watertowhichawettingagenthasbeenadded

Analysis Contractor contractorqualifiedtotest anddeterminecompositionofsamples

Approved approvedbyanofficerappointed undertheSafety Act

Asbestos anyofthefollowingfibroussilicates:chrysotile, amosite,crocidolite,actinolite,anthophyllite, ortremolite

Asbestos-Containing materialthatcontains1%ormorebyvolumeofMaterial (ACM) mostasbestostypes

Building includesastructure,anditselectrical, plumbing,heatingandairhandlingequipment andrigidductwork

Competent1 . qualified,becauseofknowledge,trainingandexperience,todo assignedworkinawaythatwillensurethehealthandsafetyof people,2 . knowsthedetailsoftheActandtheregulationsthatapplyto theassignedwork,and3 . knowsaboutpotentialoractualdangertohealthorsafety connectedwiththeassignedwork

Class 1 LowriskAsbestosproceduresandminor removaltasksdescribedinSection9 Class 2 MediumriskAsbestosproceduresand removaltasksdescribedinSection10 Class 3 HigherriskAsbestosproceduresand removaltasksdescribedinSection11

Contractor Notification aforminPW&SAsbestosManagementPlan thatverifiesthatacontractorhasbeenmade awareofpossibleACMinthebuilding .

GLOSSARY OF TERMS



Department theDepartmentofPublicWorksandServices (GNWT)

Fibre meansafibreofasbestosthatismorethanfive micrometersinlengthandthathasalength to-widthratioofnotlessthanthreetooneas viewedinaphase-contrastopticalmicroscopeat fourtofivehundredmagnification

Fibre/cc of air meansfibresofasbestospercubiccentimeter

Friable Material materialthat,whendry,canbeorhasbeen crumbled,powdered,orpulverizedbyhand pressureandisreadilymovedintheair

HEPA Filter aHighEfficiencyParticulateAerosolfilterthatis atleast99 .97percentefficientincollectinga 0 .3micrometeraerosol

NIOSH NationalInstituteofOccupationalSafetyand Health(USA)

Officer meansanoccupationalhealthandsafetyofficer appointedundertheSafety Act

PW&S theDepartmentofPublicWorksandServices, GNWT

Waste Material anyremovedasbestos-containingmaterialnot intendedforreuseandasbestos-contaminated materialthatcannotbecleanedadequatelyfor reuse .Includesdisposableclothingandpersonal protectiveequipment

WSCC theWorkersSafetyandCompensation CommissionoftheNWTandNunavut

Wetting Agent meansanyproductthatwhenaddedtowater willlowerthewaterviscosityandhelpto penetratetheasbestosmaterial .



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1.0 IntroductionTheDepartmentofPublicWorksandServices(PWS)maintainsandoperatesassetsthroughouttheNorthwestTerritoriesfortheGovernmentoftheNorthwestTerritories(GNWT) .PWShaspreparedaninventoryofasbestos-containingmaterials(ACM)andanAsbestosManagementPlanfortheseassets .TheseGuidelinesprovidedirectiontoPWSstafftoensuretheprotectionofbothworkersandbuildingoccupantsaswellascompliancewithregulatoryrequirementsduringprojectsinvolvingACM .ConsultingtheseguidelinesshouldalsohelptocompleteprojectsinvolvingACMasefficientlyaspossible .

Asbestosisafibrousmineralcommonlyusedasacomponentinmanymaterialsbecauseofitsstrengthandheatresistantproperties .Asbestoswaswidelyusedinavarietyofbuildingmaterialsuntil1987 .ItsusewaslimitedacrossCanadaasaresultofhealthconcernsrelatedtoexposuretoasbestos .Inhalationofasbestosfibresmayresultinasbestosis,aprogressivefibrosisoflungtissue .Scartissue(fibrosis)maycontinuetodevelopafterexposurestops .Twoformsofcancer,lungcancerandmesothelioma,mayresultfromexposuretoinhaledasbestosfibres .Theremaybealonglatencyperiod(between15to50years)betweenexposureandthedevelopmentofthesecancers .Aslittleasafewweeksofexposuretohighasbestosfibrelevelsmaybeenoughtocauselungcancer,especiallywiththecrocidoliteandamositeformsofasbestos .

When should these guidelines be consulted?ThepolicyofPWSistomanageACMin-placeuntilremovalbecomespracticalornecessary .RemovalofACMwilloccurinthefollowingcircumstances:

� ACM’shavebecomedamagedtothepointwhereencapsulation(withpaintorotherproductsapprovedbybestpractice)isnotpracticalandbuildingmaintenanceworkersand/orbuildingoccupantsmaybeexposed .

� DuringrenovationsandbeforedemolitionofassetscontainingACMs .� Whenspecificallyrequestedbytheclient .� Whereriskassessmentsorannualinspectionsidentifyahazard .

TheseguidelinesprovideassistancetoPWSassetmanagementandprojectstaffwhenoneormoreoftheabovesituationsarise .TheseRemovalGuidelinesapplytoeveryplacewherethedepartmentismandatedtoprovidemaintenanceorprojectmanagementservices .

1.0INTRODUCTION



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Health and Safety Legislation for Asbestos in the NWTTheAsbestosSafetyRegulations,issuedunderauthorityofSection22oftheNWT Safety Act,establishesrequirementsforworkingwithACMs .TheWorkersSafetyandCompensationCommission(WSCC)addressestrainingandsafety,andenforcestheseregulationsforworkersinvolvedinasbestosprojects .TheWSCChassetexposurelimits,thatdetailhowmuchasbestosapersoncansafelybeexposedto .Theexposurelimitforanytypeofasbestoshasbeensetat0 .1fibre/ccoveran8-hourperiod .TheUnitedStatesOccupationalHealthandSafetyAdministration(OSHA)originallyadoptedthislimitasStandard29CFR1910 .1001 .

Thelimitappliestoeveryone .However,whenanasbestosworkerwearspersonalprotectiveequipmentthatfiltersoutasbestosfibrestheyareabletoworkinareaswhereahigherconcentrationoffibresispresent .

Environmental Legislation for Asbestos in the NWTDisposalofACMsiscontrolledundertheNWTEnvironmentalProtectionAct,thatisadministeredbytheDepartmentofEnvironmentandNaturalResources(ENR)oftheGNWT .ENRhaspreparedthe“GuidelinefortheManagementofWasteAsbestos”toassistpeoplewishingtodisposeofACMsintheNWT .

Key requirements of the ENR Guideline include:A . Theresponsibilityforproperwastemanagementrestswiththe

generatororowner(GNWTDepartment)oftheasbestos .

B . Thetransportationofwasteasbestosrequiresproperclassification,packaging,labelinganddocumentation .

C . Wasteasbestoscanbedisposedofatalocallandfillwithpermissionofthemunicipality(undercertainconditionsonly)orthrougharegisteredwastemanagementcompany .

TheENRGuidelineprovidesmoreinformation .Consultitbeforebeginninganyactivityrequiringtheremoval,transportationanddisposalofwasteACMs .



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2.0 Inspection and Determination of the Presence of AsbestosTheintentoftheACMinventoryforPWScontrolledassetswasprotectionofpeopleintheirday-to-daywork .Renovationanddemolitionmayinvolveareasofthebuildingnotpreviouslyinspected,i .e .,olderflooringundercarpetoraddedunderlay,gyprocwallboardcoveredbypreviousrenovations,andjointcompoundonexistingwallboard .

TheearlyidentificationofACMsisessentialforthesafeandefficientcompletionoftheproject .Accordingly,checkforthepresenceofACMsduringtheearlystagesoftheplanningoftheproject .

� ConsulttheDepartmentalAsbestosInventoryandnotethetype,locationandextentofanydocumentedACMsintheasset .RemembertheDepartmentalAsbestosInventoryonlyincludesACMsthatwerevisibleduringtheinitialsurvey .Amorethoroughinvestigationofallareaspotentiallydisturbedbytheprojectmustbeundertaken .

� Haveatrainedperson(RegionalAsbestosCoordinatororConsultant) surveytheareastobeaffectedbytheprojectforthepresenceofACMs . Remembertolookatallmaterialsthatmaybeaffectedbytheproject, suchasadditionallayersofflooringunderneathacarpet,original wallsandceilingsbehindcurrentwallsandceilings,andunderthe currentsiding(inthesituationwheretheACMhasbeencoveredup) . Documentthetype,locationandextentofthesuspectedACM .

� ObtainasampleofeachtypeofsuspectedACMforlaboratoryanalysis . Samplescanbewettedtominimizeriskoffibrerelease(seeSection 3 .4) .

� Forrigidnon-friablematerialsuchasfloororceilingtile,geta3cmby 3cmpieceofthematerialandplaceitinasealableplasticbag .

� Forfriablematerialsuchasboilerorpipe-elbowinstallation,chipor cutatleasta2cmby2cmsectionofthematerialandplaceina sealableplasticbag .

� Labeleachsamplewiththeassetname,location,typeofmaterialand date .Achainofcustodyformmustbecompletedidentifyingall samples .

� Tagandphotographthelocationwherethesamplewasobtainedsothat furthersamplesmaybeobtainedifnecessaryandtoenabletheextent oftheACMtobedeterminedoncelaboratoryresultshavebeen received .

� Fortheprojectfile,keepaseparaterecordwiththesameinformation .

2.0INSPECTION AND DETERMINATION OF THE PRESENCE OF ASBESTOS



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� Placeallindividuallybaggedsamplesinalargersealablebagforshipment .PlacethesampleswithinapaddedenvelopeorrigidcontainerandshiptoanAnalysisContractor,requestinganalysisforthepresence,concentrationandtypeofasbestosineachsample .Includeacopyofthechainofcustodyform .

� Ifthereisachangeoftextureorcolourinamaterial,takeadditional samplestoreflectthedifferentproducts .Sometimessamplescontain anumberoflayersaspartofamatrix .InformtheAnalysisContractor whichpart(s)ofthematrixyouwantanalyzed .

� RemembertoremovepotentialACMsamplesinawaythatminimizes theriskofexposuretothepersoncollectingthesampleandtobuilding occupants .

� Collectthesampleswhenbuildingoccupantsarenotpresent,e .g ., beforeorafternormalworkinghours .

� Useadequateprotection(e .g .aHEPAfiltermaskandgloves)when collectingsamplesoffriablematerials,pipeelbows,atticinsulation, orboilerinsulation .

� Minimizethereleaseofasbestosfibresduringsamplecollection .Use aHEPAvacuuminconjunctionwithsampling(directingsuctiononto areawhereactivesamplingisoccurringtocapturefibresreleased),or wetthesurfaceoftheACMbeforeobtainingthesampletoreducefibre release .Immediatelytransferthesampletothesamplecontainer .

� Cleanuptheareawherethesamplewasobtainedimmediatelyafter samplecollectiontopreventreleaseofmorefibres .Usewetwipesor aHEPAvacuumforthispurpose,ratherthansweeping(sweepingwill generatedustandfibres) .Useducttapeorsomeothermaterialtoseal disturbedareas .Decontaminatesamplingequipmentandanyparts ofyourbodyexposedtothepotentialACMwiththoroughwashing withwater .

� Theresultsofthelaboratoryanalysisareusuallyavailablewithin5-7 workingdaysafterthelabreceivesthesample .Materialswithless than1%asbestoscontentarenormallyconsiderednon-ACMsunless thetypeofasbestosisaconcern .Usetheinformationfromtheexisting inventoryandthesurveydocumenttodeterminethepresenceand extentofACMsintheasset .GivethisinformationtotheRegional AsbestosCoordinatortoupdatetheAsbestosInventoryandasset emergencyresponseplan .



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3.0 PWS Asbestos Management Program

An“AsbestosManagementPlan”wasdevelopedbyPWS(May2000)andaninventoryofACMwascompletedformostassets .Thisinventoryissummarizedinthedocument“Asbestos Management for GNWT Assets Inspection Report (2001-2002)” .Insomebuildings,warninglabelswereplacedontheACMinserviceareaswherethereisfriableACM .WorkersaccessingtheseareasmustbeinformedofexactlocationsofACM’s,andtrainedonhowtodealwithpotentialasbestosfibrereleaseduetoaccessingorrenovationstotheseareas .Theymustalsobemadeawareofwhotocontactforadditionalinformation,andtrainedinhowtoadequatelyprotectthemselveswhenintheACMarea .PublicareasarenotlabeledunlessthereissignificantpotentialfordamagetoACM’sandthusforthereleaseoffriableasbestos .

TheComputerizedMaintenanceManagementProgramincludesanotationiftheassetcontainshazardousmaterialssuchasACM .AwarningappearsoneveryWorkOrdergeneratedforassetswithhazardousmaterials .

TheTangibleCapitalAssetSystem(TCA),whichisusedtoinventoryGNWTassets,hasaprovisionfordocumentinghazardousmaterialinbuildings .However,notalldepartmentshavefullyenteredthedatafortheirbuildings .

THISMEANSTHATTHEABSENCEOFTHISNOTATIONSHOULDNOTBETAKENASANINDICATIONTHATHAZARDOUSMATERIALISNOTPRESENT .

3.0PWSASBESTOSMANAGEMENT PROGRAM



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4.0 Project Planning

Aswithanyworkprocess,therearesomegeneralrulesforasbestosremovalwork .ThefollowingrulesshallapplytoallACMremoval:

� Whenworkistobeperformedinanoccupiedbuilding,givewrittennotificationtoalloccupants .Provideanopportunitytoraiseandanswerquestionsandconcernsbeforestartingwork .

� Confirmthatallcontractorswithanyinvolvementwiththe buildinghavesignedacopyofthe“Contractor Notification and Acknowledgement of Hazardous Material”document .

� DetermineifthelocallandfillisregisteredwithENRtoreceive asbestos .

� Confirmthattheoperatingauthorityforthelocallandfilliswillingto receivewasteasbestos .

� Isolatetheareawhereremovalworkistobeconductedfromall otherareasbymeansofconstructedseals,andinsomecases,negative airpressure .Awrittendetailedworkplanmustbegeneratedbecause theprocedureusedmustbereviewedandacceptedbytheWSCCprior toimplementation .Aminimumof72hoursnoticepriortostarting workisrequired .

� Ifremovalworkinvolvesanentirefloor,theelevatoranddoorsshould belockedtopreventunauthorizedentry .

� AbsolutelynoSMOKING,EATING,DRINKINGorCHEWINGis allowedinanasbestosworkarea .Signstoindicatethismustbeposted .

� ProvidecopiesofallinformationtotheRegionalAsbestosCoordinator toupdatetheAsbestosInventoryasnecessaryandconveythe informationincludingtheresultsofairmonitoring(ifundertaken) totheDepartmentalAsbestosManagementCoordinator .

4.0PROJECT

PLANNING



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5.0 Instruction and TrainingThedepartmentshallensurethatanypersonworkingonanyremovalprocedurehasbeencertifiedinasbestosabatementthrougharecognizedtrainingcourse .TheProjectOfficerorRegionalAsbestosCoordinatorwillrecordtheName,CertificateIDnumberandCertificateexpirydateofeveryworkeronthepremises .

The training must include:� thehazardsofasbestosexposure,particularlytosmokers;� personalhygieneandworkpractices;� minimizingfibrerelease;� theuse,fitting,cleaninganddisposalofrespiratorsand

protectiveclothing;� responsetoemergencysituations;� followingprescribedproceduresforallACMtasks;� applicableregulations;� exposurelimits;� monitoring;� enclosureconstruction,andglovebagalternatives;� labelingandwastedisposal;and� decontaminationprocedures .

The instruction and training related to respirators addresses:

� thelimitationsoftheequipment;� theinspectionandmaintenanceoftheequipment,particularly

respectingvalvefunctions,strapping,connectionstoairflowsources, andeffectivenessoffilters;

� thefittingoftheequipment,includingfittestingbyqualifiedpersonnel, andregularfitchecksperformedbytheprotecteduser;

� thedisinfectingoftheequipment;� filterchangeschedules .

5.0INSTRUCTION ANDTRAINING



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6.0 WSCC Notification

WSCCmustbenotifiedseventytwo(72)hoursbeforestartinganyprojectinvolvingtheencapsulation,enclosure,andremovalofACM .Dependingonthework,theProjectOfficer,(inthecaseofaproject),orregionalassetmanagement,(inanyothercase)isresponsibletodothisorconfirmitisdone .

IntheeventofanemergencyeventinvolvingACM,worktocontainorstopthereleaseofasbestosfibrescanbeinitiatedwithoutdelayusingacceptableprocedures .However,allreasonableeffortshouldbetakentocontactaWSCCofficerattheearliestopportunity .

ThefollowinginformationshallbesuppliedtotheWSCC,inwriting:

� Thename,addressandtelephonenumberofthepersongivingthenotice .

� Thename,addressandacontacttelephonenumberfortheplacewhere theworkwillbecarriedout .

� Themunicipaladdressorotherdescriptionoftheplacewherethework willbecarriedout .

� Adescriptionofthework(detailedsafeworkprocedures)thatwillbe carriedout .

� Thestartingdateandexpectedenddateofthework .� Thenameandtelephonenumberofthesupervisorinchargeofthe

work .� Thetrainingtheindividualworkersandsupervisorhavecompleted .� Thetotalnumberofemployeesinvolvedintheremovalofasbestos .

Do not commence work until the WSCC has indicated acceptability of the submitted work plan.ItisimportantthatPWSstaffrememberthattheownerofthebuildinghastheultimateresponsibilityfortheasbestosandhowitishandled .Regardlessoftermsandconditionswrittenintoacontract,thebuildingownerandtheiragentwillbeaccountableforanyimproperactions .

6.0WSCC

NOTIFICATION



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7.1 Isolation of Work AreaBeforebeginningtheremovalofACMinanoccupiedworkplaceorawork-areawhereotherprocessesaretakingplace,followtheserules:

� Postsignsindicating“ASBESTOS REMOVAL – NO ADMITTANCE” .� Restrictaccesstotheremovalareatothosepeopledirectlyinvolvedin

theasbestosremovalandsitesupervisors .WhereremovalofACMisperformedinanoccupiedworkplaceorwork-areathatisnotphysicallyseparatefromotherareas,constructatemporaryenclosuretopreventasbestosfibresfromleavingtheremovalarea .Thisenclosureshall:

� Use0 .15millimeters(6mil)polyethylenesheetingforwallsandfloors .� Inheavytrafficorwearareas,installextralayersorutilizereinforced

poly .� Whereneeded,setuptemporaryframingtosupportplasticsheeting .

Whereaglovebagorsimilardevice(manufacturedspecificallyforthepurposeofremovingasbestoswithinasmallconfinedairspace)canbeusedinplaceofaconstructedenclosure,thismaybeacceptabletotheWSCC .Removeallmoveableitemsfromtheworkarea .Foritemsthatcannotbemoved,covertheminpolyethylenesheeting .Tapedorsealtomakeitairtight .Evaluateanychangeofemergencyegressandtakenecessarystepstoensurerequirementsforfirefighting,emergencyexitsandemergencylightingrequirementsaremet .Itshouldbeconsidered,atthispoint,toarrangeasitetourforlocalfirefightingpersonnelsothattheyunderstandandagreewithemergencyaccess/egressprocedures .

7.0SPECIFICREQUIREMENTS



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Ventilation:� Forthedurationofthework,itmaybenecessarytomaintainthearea

withinaconstructedenclosureundernegativepressuretwenty-four hoursperdaywithaminimumof4airchangesperhourorastatic pressureofnegativefive(-5)pascals(-0 .02inchesofwater)relative tothestaticpressureofotherareasandoutsidetheenclosure .

� Exhaustfromtheworkareashouldbetotheoutsidewhenpossible andthroughadualfiltersystemendingwithaHEPAfilter .

� Disconnectallbuildingmechanicalventilationsupplyandexhaust fromtheworkareaorenclosure .Sealtheventswithpolyethylene sheeting .

� Takecarethataircannotescapeatpointsaroundducts,piping, conduitsorotherholesinsidetheenclosure .



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7.2 Air MonitoringTheneedforairmonitoringisrisk-based .Airmonitoringisrequiredduringabatementandatthecompletionofabatement(aftersurfacesaredry)formoderate-riskabatement .Forbothmoderateandhigh-riskabatementsituationsairmonitoringisrequiredbefore,duringandaftertheasbestosremovalproject .Areasbothinsideandoutsidework-siteenclosuremustbesampled .Theresultsofallmonitoringeventsmustbedisclosedtotheabatementworkers .

7.2.1 Background Air TestingBeforetheremovalworkstarts,thedepartmentoragentwillcarryoutbackgroundairtestinginordertoestablishbackgroundlevelsofcontamination .

7.2.1.1 Ongoing Air Testing During AbatementDuringwork,ifairmonitoringshowsanincreaseinairbornefiberconcentrationsoutsidetheenclosurecontainmentsystem,stopworkuntilthesourceofthecontaminationisfoundandfixed .Similarly,anyfibrelevelsmeasuredinsideanenclosureatlevels>½PFofthePPEbeingusedwilltriggercorrectiveactionbytheabatementpersonnel .

Inhigh-riskabatementsituations,insideandoutsideenclosureairtestingwillbeconductedonadailybasis,withresultsavailablewithina24-hourperiod .Thiswillalsoincludeairsamplescollectedfromthecleanroomandworkarea .

Thecontractorshallcleananyareasthathavebeencontaminatedasaresultofthecontractor’swork .The contractor should be required to carry a mandatory insurance provision covering this event.

7.2AIRMONITORING



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7.2.1.2 Final Air Testing

Dofinalairtestingwhen:

� removaliscomplete,andpriortodismantlingofanyenclosurebarriers;� thepolyethylenesheetingnotnecessarytotheintegrityofcontainment

hasbeenremoved;� Allworkhasstopped(includingclean-up),theworkareaiscleanand

dry(usuallyrequiresasettlingtimeof4to12hours),andaccesstothe workareaisrestrictedtomonitoringstaff .Airtestingwillconsistoffilteredairsamplesofsufficientvolumetoyieldamaximumlimitof0 .01fibres/cc .Contractorsshouldexpectatleasta48hourdelayfromthetimethesamplesreachthelaboratorytothetimetheresultsareknown .Forfinalairtestingtakeatleasttwosamplesinsidetheworkareaandtwosamplesoutsidetheworkarea .Atleastoneairsampleshouldbecollectedforevery110squaremetresofsurfaceareaundercontainment .7.2.2 Final Air Testing: Exterior AreasFinalairtestingisnotrequiredforexterior,openworkareas .Instead,thedepartmentwillperformathoroughandmeticulousinspectiontodeterminecontractorcompliance .7.2.3 Final Air Testing: Glove Bag Procedure

Beforefinalairtestingthedepartmentwillvisuallyinspecteachworkareainwhichglovebagremovalhasoccurred .

Testandanalyzeeachworkareausingstaticsamplingprocedures .

Afinalairtestofthegeneralareasofglovebagremovalmaybeperformedatthedepartment’sdiscretion .7.2.3.1 Failure of Final Air Tests

Whentheresultsofthefinalairtestshowvaluesofairborneasbestosinexcessofthefinalairstandard,theContractor(attheirownexpense)mustre-cleanandre-gluetheworkarea .Containmentbarriersarenotremoveduntilairqualityclearanceisobtained .

ThefinalairtestingprocedureshallthenberepeatedatContractor’sexpense .Afterfinalinspectionsandfinalairtestingarecompleteandtheresultsknown,thedepartmentwillreportthetestresultstoWSCCandtheContractor .

7.2.1.2FINAL AIR

TESTING



20

7.3 Personal Protective EquipmentPersonalprotectiveequipment(PPE)mustbeprovidedtoallworkers .

ForglovebagremovalorminorworksuchasdebriscleanuporencapsulationofACM:

� Fullbodycovering(withtightsealsatwristsandankles)consistingof approveddisposablecoverallsandcoversforheadsandfootwear .

� ApprovedrespiratorwithrequiredHEPAfilters(100serieswith minimumPFof10) .Useofthisequipmentabsolutelydoesrequire removalofanyfacialhairthatinterfereswiththeseal,andissubjectto afittestprocedure .

� Foot,handandeyeprotectionand(wherenecessary)hardhats .ForwetremovalofACM:

� Fullbodycovering,includingthehead,consistingofapproved disposablecoverallsaswellasfootwear .

� ApprovedrespiratorwithHEPAfilters(minimumPFof50),or suppliedairbreathingapparatus .Useofthisequipmentwillalso requireremovalofanyfacialhairthatinterfereswiththeseal,and issubjecttoafittestprocedure .

� Waterprooffootandhandprotection .� Eyeprotectionand(wherenecessary)hardhats .

7.3PERSONALPROTECTIVEEQUIPMENT



21

7.4 Personal Hygiene

Caremustbetakentoensurematerialfromtheworkareaenclosuredoesnotmigratefromtheenclosure .Thefollowingrulesaretobeenforcedtopreventthismigration:

� Facilitiesforwashinghandsandfacewillbemadeavailableandwillbe usedbyeveryemployeewhenleavingtheworkarea .

� Insomecases,afullbodyshowerandchangeofclothingmaybe requiredbeforeleavingtheenclosure .Insuchcases,theenclosure mustconsistofthreeseparaterooms:theworkarea,adirtyroom,and acleanroomconnectedbywashfacilitiestothedirtyroom .

� WherewetACMistoberemoved,streetclothesmustbeleftinthe cleanroomoftheenclosure .

� Allapplicableprotectiveclothingandequipmentshallbewornin theworkarea,footwearistoremainintheworkareauntilworkis completedandfootwearhasbeencleaned .

� Otherthantherespirator,allcontaminatedclothingmustberemoved andbaggedbeforeanyworkerleavestheworkarea .

� Workersmayremovetherespiratoroncethehairandbodyhavebeen thoroughlywettedinapropershower .

� Theshowermustbesuppliedwithhotandcoldrunningwateror temperedwaterbetween40ºCand50ºC .

� Soap,shampooandcleantowelsshallbeprovidedasneeded .� Aftershowering,workersmayproceedtothecleanroomtodressin

streetclothes .Whenaglovebagmethodisusedastheenclosure,workersshallremoveandbagprotectiveclothingbeforeleavingtheworkarea .Oncetheprotectiveclothinghasbeenbaggedtherespiratormayberemoved .Toiletfacilitiesshouldbeprovidedinornearthecleanroomonthedecontaminatedsideoftheenclosure,oroutsidetheenclosure .Decontaminationproceduresarenecessaryforpersonneltoaccesstoiletfacilities .Nosmoking,drinking,eatingorchewingisallowedinsidetheenclosure,orintheimmediatevicinityoutsidetheenclosure .

7.4PERSONAL

HYGIENE



22

7.5 Waste DisposalAfterACMshavebeenremoved,propercaremustbeexercisedtoensurenocontaminationoccursinsurroundingareas .

� PlaceACMinpolyethylenebagsorotherapprovedairtightcontainers ofatleast0 .15mm(6mil)thickness .ACMthatcouldpuncturean airtightbagmustbedouble-baggedandthenplacedinanapproved puncture-proofcontainer .Printedasbestoswarninglabelsmustappear ontheoutersurfaceofthecontainer .

� ThecontainermustbewipedorvacuumedwithaHEPAvacuum .� Neverbreakmaterialintosmallerpiecestofitintocontainersunless

thisisperformedundernegativeairconditions,withthecapabilityof applyingamistwhennecessarytoreducefibrelevels .

� Alleffortsshouldbetakentoeliminateorminimizestorage requirements .However,ifnecessary,storeallwastematerialina designatedareawithpostedsignageand/orcautiontape,secure againstaccidentaldamageuntiltransportedtoadisposalsiteinan appropriatelylicensedandenclosedvehicle .

� Dropsheetsandbarriersthataretobediscardedaretobewetted orHEPAvacuumedandfoldedinonthemselves .Treatthemas asbestoscontaminatedmaterial .

� Wastematerials,includingdiscardedpolyethylenesheeting, sealingtape,cleaningmaterials,protectiveclothing,vacuumbags, andothercontaminatedmaterials,aretreatedasanyotherACMfor disposalpurposes .

7.5WASTEDISPOSAL



23

7.6 Cleanup

AftertheremovaloftheACM,allsurfacesintheworkareaaretobedustedwithadampclothorvacuumedwithaHEPAvacuum .Afteruse,anycloths,mops,etc .,areconsideredtobeasbestoswaste,anddisposedof .

Compressedairisnottobeusedtocleanuporremoveasbestosdustfromanysurface .

Leavetheworkarea/enclosureintactandundernegativepressureuntilallsprayseal(glue)hasdried(usually4to12hours)followingcompletionofthecleanup .

Workersinvolvedinthecleanupfollowthesamepersonalprotectiveandhygienepracticesasworkersinvolvedinremovalwork .(See7 .3and7 .4)

Beforetheenclosureisdismantled,performairsamplingtoensurethelevelofasbestosfibresdoesnotexceedthelimitdefinedbypre-removalairtestingorbyWSCClimits,whicheverislowest .

Signsarenottoberemoveduntilairsamplesaretestedandprovetobewithintheacceptablelimit .

7.6CLEANUP



24

8.1 Class 1 - DescriptionInstallationorremovalofindividuallymanufacturedproductscontainingasbestos,includingproductssuchasvinylfloortiles,acousticdrop-ceilingtiles,gaskets,seals,packing,frictionproducts,orasbestoscementproductssuchascementwallboardwherenojointcompoundwasused .

Cutting,drillingorshapingofaproductmentionedinthepreviousparagraphbytheuseofhandoperatedtools,wherewaterisusedtocontrolfibrerelease .

Applicationoftape,mud,asealant,orothercoveringtopipeorboilerinsulationcontainingasbestos .

Encapsulationofasbestos-containingmaterialinamannerthatdoesnotdisturbtheasbestos .

Cleanupofgeneraldebris,whenwettedorbyHEPAvacuumthatmaycontainACMthathavedetachedfrominstalledlocations .

8.0CLASS 1(LOW RISK)ASBESTOSREMOVALTASKS ANDPROCEDURES



25

8.2 Class 1 - ProceduresInstallbarriertapeandwarningsignsinproximitytotheworkarea .

Approvedrespirators(HEPAfiltersandfittestingrequired)andprotectiveclothingsuitableforasbestos(orbetter)aretobemadeavailablefortheuseofemployees .

Do not conduct any dry removal.However,individualmanufacturedpiecesaswellasloosedebriscanbewettedandpickedupbyhandandplacedinto0 .15mm(6mil)polyethylenebags(doublebaggingisrequired)withprintedasbestoswarninglabels .Donotpurposefullybreakpiecesintosmallersizestomakeiteasiertobagortransport .Largerpiecesmayrequirelargerbagsorplasticwrappinginsteadofbagging .Inthisevent,asbestoslabelswillhavetobemanuallyattachedtothewrapping,identifyingitasasbestoswaste .Fordebriscontaining“sharps”,sealitinpuncture-proofcontainers(usuallywoodenboxesorbarrels)inadditiontothepolyethylenebags .

Controlthespreadofasbestosdustfromtheimmediateworkareabymeasuresappropriatetotheworktobedone .Thisincludestheuseofdropsheetsofpolyethyleneorothersuitablematerial,useofwetwipestocollectdust,andtheuseofHEPAvacuumstocollectdust .

Inthecaseofanoperationmentionedinparagraphs8 .1(2),(3)and(4),wettheproduct,unlesswettingcreatesahazardorcausesdamage .Repeatthewettingfrequently(regularintervals)duringtheworkandimmediatelyuponcompletionofthework .

CleanupdustandwastecontainingasbestosandremoveitusingavacuumequippedwithaHEPAfilter,orbydampwipingormopping .

Dropsheetsmustbedisposedofasasbestoswaste .TheyshouldbewetteddownorHEPAvacuumed,rolledinonthemselvesanddoublebaggedforhandlinganddisposal .



26

9.1 Class 2 - DescriptionTheremovalofadrop-ceiling,orpartofit,toaccessaworkarea,whereany quantityoffriablematerialcontainingasbestosislikelytobelyingonthesurfaceofthedrop-ceiling .This is typically only where sprayed on material was applied above the ceiling.

Theminorremovalorminordisturbance(lessthan0 .09m²or1ft²ofsurfacearea)offriablematerialcontainingasbestosduringtherepair,alteration,maintenanceordemolitionofallorpartofabuilding,oranymachineryorequipment,orwheretheminorremovalordisturbanceismorethanaClass 1 Task.

Theremovalofpipeinsulationcontainingfriableasbestoswiththehelpofacommercialcontainmentbag(glovebag)inamountsgreaterthanabsolutelynecessarytodoemergencyrepairs .

UseofpowertoolshavingadustcollectiondeviceequippedwithaHEPAfiltertocut,grind,orabradeanACMproduct .

Removalofdrywallwhereasbestosjoint-fillingcompoundshavebeenused .

Clean-upofsmallquantitiesoffriableasbestosdebristhathasdetachedfromwhereitwasapplied .TypicallythiswillbeACMmudfrompipefittings .

Anyoperationnotmentionedinparagraphs(1)to(6)abovethatmaycauseexposureofanemployeetoasbestos,andthatismorethanaClass1 and less than a Class 3 Task.

9.2 Class 2 - ProceduresEstablishbarriersanderectsignagearoundtheworkingarea .

Shutdownallair-handlingsystemsthatenter/leavetheworkingareaandclosepassagedoorstominimizeair-flowthroughouttheworkingarea .

Usewateroramendedwatertocontrolthespreadofasbestosdust,unlesswettingcreatesanelectricalorslippinghazardorcausesdamage .

� ControlallvisibledustusingdropsheetsandHEPAvacuums .� SprayACMthoroughlywithwateroramendedwaterbeforebeginning

removalwork .OnlypersonswearingprotectiveclothingandproperrespiratoryprotectionmayenteraworkareathathasbeendesignatedasClass2Removal:

9.0CLASS 2(MODERATE RISK)ASBESTOSREMOVALTASKS ANDPROCEDURES



27

� Everyemployeewhoenterstheworkareaistobeprovidedwith appropriaterespiratoryprotectiveequipmentthathasbeenfittested priortouse .

� RespiratorsaretobeNIOSHapproved,reusable,airpurifyingdust respirators(orbetter),forprotectionagainstasbestos .Filtersshouldbe atleastN/P/R100filters .

� Whennotinuse,reusablerespiratorsaretobemaintainedandstored inacleanandsanitarylocationthatiseasilyaccessible .

� Wherepracticableassigntherespiratortoaworkerfortheirexclusive use .

� Clean,disinfectandinspectrespiratorsaftereachuseandafterevery shiftduringwhichtheyareusedinanongoingprocess .Provideprotectiveclothingtoeveryemployeewhoenterstheworkarea:

� Theprotectiveclothingconsistsofdisposablecoverallsthatarefull bodycoveringandcoversforheadsandfootwear .

� Anyprotectiveclothingmustberepaired(withducttape)orreplacedif torn .

� Decontaminatebywetwipingorbyusingavacuumequippedwitha HEPAfilterbeforeleavingthecontaminatedworkarea;and

� Discardasasbestos-contaminatedmaterialafteruse .Beforestartingworkthatislikelytodisturbfriablematerialcontainingasbestosthatiscrumbled,pulverizedorpowdered,andthatislyingonanysurface,firstwetdownandthencleanupandremovethefriablematerialbydamp-wiping,orbyusingavacuumequippedwithaHEPAfilter .Inthecaseofanoperationmentionedinparagraphs9 .1(2),(3)and(4),wettheproduct,unlesswettingcreatesahazardorcausesdamage .Repeatwettingfrequently(regularintervals)duringtheworkandimmediatelyafteryoufinish .

Cleanupwastecontainingasbestosandplaceintoasuitablylinedcontainerora0 .15millimeter(sixmil)polyethylenebag .Removedustbydamp-moppingorusingavacuumequippedwithaHEPAfilter .Sealwastecontaining“sharps”inpuncture-proofcontainersinadditiontothepolybagorliner .

Dropsheetsaretobediscardedafteruse .Theyarefirsttobevacuumedorsprayeddownwithwater,foldedinwardandthentreatedasACMwastebydoublebagging .



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10.1 Class 3 - DescriptionTheremoval,otherthantheminorremoval(asdescribedaboveinClasses1and2),ofmaterialcontainingasbestosduringtherepair,alteration,maintenanceordemolitionofallorpartofabuilding,oranymachineryorequipment .

Thesprayapplicationofanencapsulantoverfriableasbestosusingalow-pressuresprayer .

TheuseofapowertoolnothavingadustcollectiondeviceequippedwithaHEPAfiltertocut,grindorabradeanACMproduct .

Thecleaningorremovalofair-handlingequipment,includingrigidducting,inabuildingthathassprayed-fireproofingcontainingasbestos .

Anyindoororoutdooroperationinvolvingthedryremovalorstrippingoffriableasbestos-containingmaterials .

Therepair,alterationordemolitionofaboiler,kiln,metallurgicalfurnaceorsimilardeviceorpartthereof,madeinpartofrefractorymaterialscontainingasbestos .

10.2 Class 3 - Procedures

10.2.1 PreparationPostsignsaroundtheremovalareatorestrictaccess .Postenoughsignstowarnofthehazard .Stateinlarge,clearlettersthat:

� ASBESTOSWORKAREA,LUNGCANCERHAZARD .� ACCESSTOTHEWORKAREAISRESTRICTEDTOAUTHORIZED

PERSONSWEARINGPROTECTIVECLOTHINGAND RESPIRATORYPROTECTIVEEQUIPMENT .

� NOEATING/DRINKING/SMOKING/CHEWING .Allemployeesmustwearrespiratoryprotectionon-siteduringthepreparationofworkareasforasbestosremoval,whereanydisturbanceofthematerialmayoccur .

� Therespiratoryprotectionmusthaveaminimumprotectionfactorof 50,andbeapprovedbyNIOSHforprotectionagainstasbestos .

� Theprotectivedevicemustbefittedsothatthereisaneffectiveseal betweentherespiratorandtheemployee’sface .

� Wherepracticable,assignarespiratortoanemployeeforthe employee’sexclusiveuse .

� Whenusingrespirators,followtheproceduresoftheequipment manufacturer .

10.0CLASS 3(HIGH RISK)ASBESTOSREMOVALTASKS ANDPROCEDURES



29

Reusablerespiratorsmustbecleaned,disinfectedandinspected:� afteruse;� atleastonceeachshift,whenissuedfortheexclusiveuseofone

employee;� aftereachusewhenusedbymorethanoneemployee .

Whennotinuse,maintainandstorereusablerespiratorsinacleanandsanitarylocation .

Disablethemechanicalventilationsystemservingtheworkareatopreventcontaminationandfibredispersaltootherareas .

� Switchoffthesystemwherepossible .� Sealtheventilationductstoandfromtheworkarea .� Wheretheventilationsystemcannotbeswitchedoff,blankoffthe

mainventilationducttotheareawithrigidimperviousmaterialsuch asmetalorwood .Takeallmoveableequipmentandmaterialfromtheworkarea .Sealwithpolyethylenesheeting,floors,wallsandanyitemsremainingintheroom .

� Repairimmediatelyanydamagetothepolyethylenesheetingthat occursastheworkproceeds .

� Thepolyethylenesheetingshouldhaveaminimumthicknessof 0 .15mm(6mil) .Usedrop-sheetsduringoutdoorremovaloperations .Takeeveryprecautiontoavoidelectricshock .Disconnectelectricpowertopermanentfixtures,exceptthattemporaryconnectionsmaybemadetolighttheworkareaandfortheoperationofasbestos-removalequipment .Inwetremovaloperationstheonlyelectricalequipmentthatcanbeusedis:

� batteryoperated;� doubleinsulated;� bondedtoground,extralowvoltage,notexceeding30voltsand100

volt-amps;� bondedtoground,andequippedwithagroundfaultcircuitinterrupter

oftheClassAtype,thatistestedbeforeeachuse .



30

Setupadecontaminationareaadjacenttotheworkarea .Thisstructureshouldbefullyairtestedbeforeusetoensurethatthereisanegativeairflow,bringingoutsideairthroughthesequentialdecontaminationchambersandintotheworkarea .Thedecontaminationstructureconsistsof:

� Entryfromoutsideintoacleanroomsuitableforchangingintoclean protectiveclothing(entry)orstreetclothes(exiting),andforstoring cleanclothingandequipment;

� Entrytoashowerroomfromthecleanroomasdescribedbelow .� Entryfromtheshowerroomintoa“dirty”changingroomsuitablefor

puttingonreusableprotectiveclothingsuchasbootsandworkgloves .Provideanduse“Airlockdoors”betweenthedifferentroomsinthedecontaminationstructureasfollows:

� Theyconsistoflayersofpolyethylenewithatleastathree-footoverlap .� Thesesheetsareweightedatthebottomtokeeptheflapsclosed .� Theyarearrangedinsequence .� Theyareconstructedsoastopreventthespreadofasbestosdust .

The shower room in the decontamination facilityIstobelocatedbetweenthecontaminatedchangeroomandthecleanchangeroom .

Hasanindividualcontrolinsidetheroomtoregulatewaterflow,andifthereishotandcoldwater,individualcontrolsinsidetheroomtoregulatethetemperature .

Mustprovideadequatesuppliesofhotwatertomaintainawatertemperatureofatleast40oCbutnomorethan50oC .

Istobeprovidedwithcleantowels .Towels,onceused,shouldbeleftintheshowerroomplacedintoaplasticcontainerwithalid .

Nocontaminatedclothingwillbepermittedtoberemovedfromthedirtyroomunlessitissealedinasbestosbagsandtreatedasasbestoswaste .Respiratorsshallbedonnedinthecleanroom(uponentry)andshallnotberemoveduntilshoweringintheshowerroom(uponexiting) .

Makesureadequatetoiletfacilitiesexistinthecleanroom(oroutsidetheenclosure),andthatemployeesgothroughtheproperdecontaminationsequencebeforegoingtothetoiletfacilities .



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10.2.2 Class 1 - Asbestos Removal

Establishnegativeairpressureinsidetheworkareabeforeremovinganyasbestos-containingmaterial .Negativepressureshouldbetesteddaily(-5Pa0 .02”) .

InstallHEPAfiltersontheexhaustunit(s)usedtocreatenegativepressure .

Operatethenegativeairunitsona24-hourbasis .

Maintainaminimumoffourairchangesperhourintheremovalarea .

Wherepossible,exhausttheairfromtheworkareatotheoutdoorsortoanareawithimperviousmaterialsuchaswoodormetal .

Maintaintheintegrityoftheenclosureandtheadequacyofthenegativeairpressureby:

� conductingsmoketests;� adailyvisualinspectionoftheenclosure;� Anydeficienciesmustberepairedpriortostartingthedailyworkshift .

Personal Protective Clothing:

� isprovidedbytheemployer,andwornbyeveryemployeewhoenters theworksite;

� consistsoffullbodycovering,includingheadcovering,withsnug fittingcuffsatthewrists,anklesandneck,(disposablecoverallsare stronglyrecommended);

� isreplacedorrepairediftorn;� includessuitablefootwear,thatmustnotbetakenfromtheworksite

unlesscoveredadequatelywhileontheworksite;� isdonnedinthecleanchangingroom,andstreetclothesareleftinthe

cleanchangingroom,preferablyinindividuallockers;� isremovedwhenleavingtheworksiteandisstored,ordiscardedinthe

first(“dirty”)changeroom .

10.2.2ASBESTOSREMOVAL

(NOTE:HIGH RISK

REMOVAL ISTO BE

CONDUCTED BY THIRD PARTY

CONTRACTORS, NOT BY PUBLIC

WORKS ANDGOVERNMENT

SERVICESPERSONAL)



32

Personal Respiratory Protection:� consistsofPoweredAirPurifyingRespirators(PAPR)fittedwith

NIOSHapprovedcartridgesforasbestos,orHEPAfilters(N/P/R100);� consistsofaNIOSHapprovedairlinerespiratorforanydryremoval;� iswornbyallemployeesinvolvedin,ormonitoring,theasbestos

strippingorclean-up;� isworninthemannerdescribedinthemanufacturer’sinstructions;� isproperlyfittedonemployees;� filtersarechangedatleastasfrequentlyasthemanufacturer

recommends .Special precautions are taken for employees inside the removal area:

� Eating,drinking,chewingorsmokinginsidethechangeroom,shower room,hallways,storageroom(s)orremovalareaarestrictlyprohibited .

� Completedecontaminationisrequiredpriortoeating,drinking, chewingorsmoking .

� Respiratoryprotectiveequipmentisnotremovedinsidetheasbestos workarea .

� Employeestakecoffeebreaksandhavelunchinanareacompletely separatefromtheasbestosremovalarea .When an area is being stripped:

� Onlyauthorizedpersonnelarepermittedtoenterthearea .� Employwetmethodsinallcasesexceptwhereelectricalconductors

orelectricalequipmentcannotbede-energized .Writtenpermission mustbeobtainedfromaWSCCSafetyOfficerbeforeproceedingwith drystripping .

� Amendedwaterisusedforsoakingasbestos-containingmaterials .� Sprayamendedwaterwithairlesssprayequipment,setatthelowest

operablepressure .� Thoroughlysprayasbestos-containingmaterialwithamendedwater .

Ensurethatthematerialhasbeensaturated,(fallenmaterialshouldbe wetenoughthatwatercaneasilybesqueezedfromitbyhand) .

� Doremovalinsmallsections,i .e .,about30squarefeet .Afterstripping, placeallfallenmaterialina0 .15mm(sixmil)orthickerpolyethylene bag .



33

Afterremovalhasbegun,allpersonsleavingtheworkareamustperformpersonaldecontamination:

� DampwipeorHEPAvacuumPPEwhileinworkarea .� Removeworkclothesanddiscardintoasbestosbagsinthe“dirty”

room(theroombetweentheworkareaandtheshowerroom) .� Removerespiratoryprotectionafterthoroughlyshoweringincluding

thewipingoftherespiratorintheshower .Employeesonlyproceedto thecleanchangeroomafterathoroughshowering .

� Wheretheprotectiveclothing(includinghardhats,ifused,andwork boots)willbereused,itisdecontaminatedusingavacuumequipped withaHEPAfilterorbydampwipingbeforeremoving .Theseitems aretobeleftinthe“dirty”room .

� Wheretheprotectiveclothingwillnotbereused,itisdiscardedinthe samewayasasbestos-contaminatedmaterial .NOTE: In the case of serious injury to a person in the work area, and in this case only, decontamination procedures may be waived in the interests of obtaining medical aid.



34

10.2.3 Cleanup of Removal AreaFollowingremovalofasbestos,theentirearea,includingthedecontaminationarea,iswetcleanedandvacuumedwithHEPAfilterstoremoveallvisibleresidue .

Theequipmentusedduringtheremovalis:

� wetwiped,� washedandwrappedinpolyethylene,or� placedinplasticbags,and� broomsaresealedinplasticbagsandcleanedlaterordiscardedas

Asbestoswaste .Asealantisthenappliedtotheentireareaandtotheremainingplastic:

� Thesealantissprayed-onusinganairlessspray,thatisusedin accordancewiththemanufacturer’srecommendations .

� Anegativepressureismaintainedinsidetheenclosureduringthis process .Employeesinvolvedinclean-upusepersonalprotectiveequipmentandrespiratoryprotectionsuchasdescribedinparagraph10 .2 .2(PersonalProtectiveClothingandPersonalRespiratoryProtection) .

Employeesinvolvedinthecleanupfollowthesamepersonaldecontaminationprocedureasdescribedinparagraph10 .2 .2(PerformPersonalDecontamination) .

Theshowersaredismantledandremovedlast,inorderthatemployeesengagedintheclean-upprocedurescanusethem .

10.2.3CLEANUP OFREMOVALAREA



35

10.2.4 Clearance Sampling

ClearancesamplingiscompulsoryforallClass3projectswheretheprojectsiteistobere-occupied(exceptforoutdooroperations) .

Aguidelinevalueforclearancesamplingis0 .01fibre/cm3 .Itmaybenecessary,atthediscretionofairmonitoringpersonnel,toconductaggressivesampling .Thisrequirestheuseofaportableblowerfantodisturbtheairintheworkareainconjunctionwithairsamplecollection .

10.2.5 Encapsulation

Thepreparationofaworkareaisconductedthesamewayastheremovalofasbestos-containingmaterial(Class3)i .e .,subsection10 .2 .1 .

Personalprotectiveclothingisusedasdescribedinparagraph10 .2 .2(7) .

Personalrespiratoryprotectiveequipmentisusedasdescribedinparagraph10 .2 .2(8) .

Thespecialprecautionsoutlinedinparagraph10 .2 .2(9)aretakenduringtheseprocedures .

Thepersonaldecontaminationproceduresusedareasdescribedinparagraph10 .2 .2(11) .

Encapsulant(eitherthebridgingorthepenetratingtype)isappliedoverthesurfaceoftheasbestos-containingmaterialusingairlesssprayequipmentatlowpressuresetting .

Theclean-upproceduresareasdescribedinsubsection10 .2 .3 .

Donotapplyaliquidsealantorencapsulanttofriablematerialthatcontainsasbestos,ifthefriablematerialhasdeteriorated,orifthereisinsufficientstrengthandadhesiontosupporttheweightofthesealantandthefriablematerials .

10.2.4CLEARANCE

SAMPLING



36

11.0 Removal of Resilient Floor CoveringsThisremovalisconsideredtobelow-riskClass1,andwillfollowlowriskprocedures .Vinyl-asbestostileandasphalttilecontainasbestosfibers,asdidsomeasphaltic“cutback”adhesivesandthebackingsofmanysheetvinylflooringsandliningfelts .Thepresenceoftheasbestosintheseproductsisnotreadilyidentifiable .TheUSEnvironmentalProtectionAgency(EPA)andsomeotherregulatoryagenciesrecognizethatthoseproductsarenon-friable(i.e. when dry cannot be crumbled, pulverized or reduced to powder by hand pressure)unlesscertainactivitiesoccur .

Whileresilientfloorcoveringproductsmanufacturedtodaydonotcontainasbestos,theasbestosusedintheolderproductswasencapsulatedinthematrixoftheproduct .

Unlesspositivelycertainthattheproductyouintendtoremoveisanon-asbestos-containingmaterial,youmustassumeitcontainsasbestos .Testingshouldbeconductedifcostsfortestingareconsiderablylessthanremovalcosts .

Numerousproducts,devicesandtechniqueshavebeenrecentlyintroducedorrecommendedfortheremovalofresilientfloorcoveringstructures .Beforeyouallowtheuseofanypracticesfortheremovalofanin-placeresilientfloor-coveringproductthatcontains(orisassumedtocontain)asbestos,youmustdeterminethatthepracticemeetsallapplicableregulationsincludingtheWSCCstandardsforoccupationalexposuretoasbestos .

Youmustalsodeterminethatanymaterialsusedduringtheremovalpracticewillbecompatiblewiththenewfloorcoveringtobeinstalled .

For the purposes of this guideline PWS is assuming that certified abatement personnel are not required for flooring removal providing the guidelines are followed and a trained, experienced supervisor or PWS employee is directly managing the work. The workers should be made knowledgeable by the supervisor.

11.0REMOVALOF RESILIENTFLOORCOVERINGS



37

11.1 General Rules for Removal of Resilient Floor Covering

Unlesspositivelycertaintheproductyouintendtoremoveisnotasbestos-containingmaterial,youmustassumeitcontainsasbestosandremoveitaccordingly .Asampleofthematerialcouldbecollectedandtestedifremovalcostsaresignificantlyhigherthantheywouldbewithnoasbestoscontent .

Removalofexistingfloorcoveringshouldbeconsideredthelastalternative .

Neversand,dryscrape,drill,saw,beadblast,ormechanicallychiporpulverizeanyresilientflooring,backing,lining,felt,asphaltic“cutback”adhesive,orotheradhesivetoremovethemfromthefloor .Beawarethatsomemasticgluesmaycontainasbestos,andwillhavetobescrapedoffusingnon-poweredhandtools .

AlwaysuseavacuumequippedwithHEPAfilter,disposabledustbag,andmetalfloorattachment(nobrush) .

Donotdrysweep .

Allsheetfloorremovalsmustbeperformedusingdetergentsolution .

Allfeltscrapingmustbedonewet .

Priortoremoval,alltilemustbewetted(exceptincaseswhereheatwillbeapplied) .

Warning!Electricalshockhazardexists .Useagroundfaultinterrupterforanyelectricalconnectionsofequipmentusedinawetenvironment .

Becareful .Resilientflooringbecomesslipperywhenwetwiththespecifieddetergentsolution .Usecautiontocontainthesolutionintheimmediateworkarea .Standingonanewsheetofplywoodornon-slipsurfacewhileworkingisrecommended .

Materialremovedmustbeplacedinheavy-dutyimpermeablebagsatleast0 .15millimeter(6mil)thickorinaleak-tightcontainer,properlylabeledanddisposedofinanauthorizedlandfill .Sealmaterialcontaining“sharps”intopuncture-proofcontainersinadditiontothepolyseallayer .

11.1GENERAL RULES

FOR REMOVALOF RESILIENT

FLOORCOVERING



38

11.2 Removal of Fully-Adhered Resilient Sheet FlooringRemoveallfurnitureandappliancesfromtheworkarea .

Removeanybindingstripsorotherrestrictivemoldingsfromdoorways,walls,etc .

Preparethespecifiedliquiddishwashingdetergentsolution(454cc/16oz .ofspecifiedliquiddishwashingdetergentto4 .54litre/onegallonofwater)andpourintoahandsprayer .

Beforeremovalbegins,vacuumtheentirefloorusingaHEPAvacuumwithametalfloorattachment .

Makeaseriesofparallelslices100mmto200mm(4”to8”)apartthroughthetoplayeroftheflooringandabouthalfwaythroughthebacking,paralleltothewall,fortheentirefloor .

Wearlayerremoval:Oneworkerstartsattheendoftheroomfarthestfromtheentrancedoorandpriesupthecornerofthestrip,separatingthebackingfromthewearlayer .Asthestripisbeingremoved,anotherworkerspraysaconstantmistofthespecifiedliquiddishwashingdetergentsolutionintothedelaminationnippointtominimizeanyairbornedustparticles .Whendoneproperly,thefeltremainingonthefloorandonthebackofthestripwillbethoroughlywet .

� Doonlyone,1metrewide-stripareaatatime .� Standontheremainingfloorcoveringorcleanfloor(totheextent

feasible,minimizestandingonthefelt) .� Theslicedstripsshouldbepeeledfromthebackingbypullingor

rollingaroundacorethatwillcontrolthestrippingangletocreatea uniformtension(someresilientflooringwearlayersmaynotbereadily strippableandmayrequirewet-scraping) .

� Tieortapetheremovedmaterialsecurelyandplaceintheheavy-duty impermeabletrashbagorclosedleak-tightcontainerfordisposal .Removeanddisposeofeachsucceedingstripinthesameway .

� Minimizewalkingontheexposedfelt .� Workerfootwearmustbecleanedorremovedbeforeleavingworkarea .� Closefullbagstightly,andsealsecurelyfordisposal .� Identifywithanappropriatelabelstating:Dispose in an approved

landfill only.

11.2REMOVALOF FULLY-ADHERED RESILIENTSHEETFLOORING



39

Occasionally,partsofthetoporinnerlayerwillsticktothebacking .Thiscanoftenbeeliminatedbypeelingintheoppositedirection .Thestiff-bladedscrapermayhelpintheremovalorpeelingoftheselayers .

Wet-scraping residual felt:

� Afterthreestripsofflooringmaterialareremoved,anyresidualfelt mustbewetscraped .Thoroughlywettheresidualfeltwiththespecified liquiddishwashingdetergentsolution .Waitafewminutestoallowthe liquidtosoakintothefelt .

� Standontheremainingfloorcoveringtotheextentfeasible(notthe felt)andusethestiffbladedscrapertoscrapeupthewetfelt .

� Rewetthefeltifthesolutionhasnotcompletelypenetrated,ifdrying occurs,orifdryfeltisexposedduringscraping .Pickupthescrapings whilestillwetastheyareremovedfromthefloorandplaceinaheavy dutyimpermeabletrashbagorleak-tightcontainer .Wet-scrapeallfelt fromthisfloorareabeforeproceedingfurther .

� Whenthisfloorareahasbeencleanedfreeoffelt,vacuumwithaHEPA vacuumcleanerwiththemetalfloorattachment .Positionthevacuum cleanersothatthedischargeairdoesnotblowontheareabeing cleaned .

� Repeattheaboveonthenextseriesofstrips .� Repeatthisoperationuntilthefelthasbeenremovedfromthewhole

floor .Closefullbagstightlyandsealsecurelyfordisposal .Identifywith anappropriatelabelstating:Dispose in an approved landfill only .

� Whentheentirefloorhasbeenremoved,letitdryandvacuumwith aHEPAvacuumcleanerwiththemetalfloorattachment .Positionthe vacuumcleanersothatthedischargeairdoesnotblowonthearea beingcleaned .

� Aftervacuuming,usedHEPAfiltersandcleanerbagsshouldbe removedaccordingtothemanufacturer’sinstructionsandplacedina heavy-dutyimpermeablebagatleast0 .15millimeter(6mil)thickor leak-tightcontainer .Closeandsealthebagsecurelyfordisposal . Identifywithanappropriatelabelstating:Dispose in an approved landfill only .

� Afloorthathasbeenwet-scrapedmustbeallowedtodrybefore installinganynewresilientflooring .CAUTION:Excessivemoisturecancausepermanentdamagetowoodunderlays .Itisthecontractor/worker’sresponsibilitytousethecorrectamountofsolutiontopreventunderlaydamage .



40

11.3 Removal of Loose-Lay or Peripherally Adhered Resilient Sheet FlooringWarning:Donotsand,drysweep,dryscrape,drill,saw,beadblast,ormechanicallychiporpulverizeexistingresilientflooring,backing,liningfelt,asphaltic“cutback”adhesive,orotheradhesive .

� Removeallfurnitureandappliancesfromtheworkarea .� Removeanybindingstripsorotherrestrictivemoldingsfrom

doorways,walls,etc .� Preparethespecifiedliquiddishwashingdetergentsolution(1/2litre

ofthespecifiedliquiddishwashingdetergenttofivelitresofwater)and pourintoahandsprayer .

� Beforeremovalbegins,vacuumtheentirefloorusingaHEPAvacuum withametalfloorattachment .

� Ifflooringisloose,startattheendoftheroomfarthestfromthe entrancedoorwayandsliceastrip½metrewideinthelooseflooring . Oneworkerremovestheslicedstripwhileanotherworkerspraysthe specifiedliquiddishwashingdetergentsolutiondirectlyintothe separationnippoint .Minimizestandingontheexposedsubfloor duringtheremovalprocesstotheextentpossible .

� Rollthewetstriptightlyandtieortapesecurelysoitwillnotunroll . Placeitinaheavy-dutyimpermeablebagatleast0 .15millimeter (6mil)thickorinaleak-tightcontainerwithanappropriatelabel stating,forexample“Caution–ContainsAsbestos .AvoidOpening orBreakingContainer .BreathingAsbestosisHazardoustoYour Health .”Closeandsealthetrashbagsorleak-tightcontainersecurely fordisposal .Disposeinanapprovedlandfill .

� CleantheexposedfloorwithaHEPAvacuumcleanerwiththemetal floorattachment .Positionthevacuumcleanersothatthedischargeair doesnotblowontheareabeingcleaned .

� Repeattheabove,slicing,rollinganddisposingofonestripatatime andcleaningthenewlyexposedareaimmediatelyuntiltheentirefloor coveringhasbeenremoved .Letthefloordry,thenvacuumwitha HEPAvacuumcleanerusingametalfloorattachment .

� AftervacuumingtheusedHEPAfiltersandcleanerbagsshouldbe removedaccordingtomanufacturer’sinstructionsandplacedina heavy-dutyimpermeablebagatleast0 .15millimeter(6mil)thickor inaleak-tightcontainerwithanappropriatelabelstating,forexample “Caution–ContainsAsbestos .AvoidOpeningorBreakingContainer . BreathingAsbestosisHazardoustoYourHealth .”Closeandsealthe bagsorleak-tightcontainersecurelyfordisposal .Disposeinan approvedlandfillonly .

11.3REMOVAL OF LOOSE-LAY ORPERIPHERALLY-ADHEREDRESILIENT SHEETFLOORING



41

11.4 Removal of Resilient Tile

Removeallfurnitureandappliancesfromtheworkarea .Removeanybindingstripsorotherrestrictivemoldingsfromdoorways,walls,etc .

Beforeremovalbegins,vacuumtheentirefloorusingaHEPAvacuumwithametalfloorattachment .

Floortilesmustbewetted(mistedwithhandsprayer)beforeactualremovalbegins(unlessheatwillbeusedtoremovetiles) .

Thoseareasnormallyexposedtoheavyfoottrafficpatternsusuallyhavetilesadheredthetightest .Instartingthetileremovalprocess,selectthoseareasthatreceivetheleasttraffic .Trytoremoveindividualtilesinonepiecealthoughsomebreakageoftilesisunavoidable .

Starttheremovalbycarefullywedgingascraperintheseamoftwoadjoiningtilesandgraduallyforcingtheedgeofoneofthetilesupandawayfromthefloor .Continuetoforcethebalanceofthetileupbyworkingthescraperbeneaththetileandexertingbothaforwardpressureandatwistingactiononthebladetopromotereleaseofthetilefromtheadhesiveandthefloor .

Afterthetilesareremovedplacethem,withoutfurtherbreakageintosmallerpieces,inaheavy-dutyimpermeablebagatleast0 .15millimeter(6mil)thickoraclosedleak-tightcontainerthatwillbeusedfordisposal .Removedtilescanbeplacedinemptytilecartonsfirstandthenplacedintheheavy-dutyimpermeablebag .Topreventtearingoftheheavy-dutyimpermeablebag,placeonlyonefullcartonofremovedtileinabag .

Withtheremovalofthefirsttile,accessibilityofothertilesisimproved .Forcethescraperundertheexposededgeofanothertile,andcontinuetoexertaprying,twistingforcetothescraperasitismovedunderthetileuntilthetilereleasesfromthefloor .Removeanddisposeofeachtileinthemannerdescribedintheaboveparagraphs .

Minimizewalkingontheexposedadhesivetotheextentpossible .Workerfootwearmustbecleanedorremovedbeforeleavingworkarea .Closefullbagstightlyandsealsecurelyfordisposal .Identifywithanappropriatelabelstating,forexample“Caution–ContainsAsbestos .AvoidOpeningorBreakingContainer .BreathingAsbestosisHazardoustoYourHealth .”Disposeinanapprovedlandfillonly .

11.4REMOVAL OFRESILIENT TILE



42

Sometileswillreleasequiteeasilywhileothersrequirevaryingdegreesofforce .CAUTION:Wear safety glasses when using this procedure .Wheretheadhesiveisspreadheavilyorthetileisbondedtightly,itmaybeeasiertoforcethescraperunderthetightlyadheredareasbystrikingthescraperhandlewithahammer,usingblowsofmoderateforcewhilemaintainingthescraperata25°to30°angletothefloor .

Ifyoufindareaswhereeventheabovemethodswillnotremovethetiles,theremovalprocedurecanbesimplifiedbythoroughlyheatingthetileswithahotairgunoraradiantheatsourceuntiltheheatpenetratesthroughthetileandsoftenstheadhesive .

Alternatively,withoutfirstpryingupfloortilesusingascraper,aheatsourcelikeahotairgunorinfraredheatmachinecanbeusedtoapplyheattothefloortileandthenthetilesmayberemovedbyhandorbyusingascraper .(Wetting the tiles is not required for this alternative removal method) .Whenusingthisprocedure,walkingonexposedadhesivemaybeunavoidable .Workerfootwearmustbecleanedorremovedbeforeleavingtheworkarea .

Whenusinganinfraredheatmachine,followmanufacturer’sinstructions .

Aftertilesareremoved,placetheminaheavy-dutyimpermeablebagatleast0 .15millimeter(6mil)thickorotherclosedleak-tightcontainerwithoutfurtherbreakage .Removedtilescanbeplacedinemptytilecartonsfirstandthenplacedintheheavydutyimpermeabletrashbags .Topreventtearingoftheheavy-dutyimpermeabletrashbag,placeonlyonefullcartonofremovedtileinabag .

Closethefullbagsofremovedtiletightlyandsealsecurelyfordisposal .Identifywithanappropriatelabelstating,forexample“Caution–ContainsAsbestos .AvoidOpeningorBreakingContainer .BreathingAsbestosisHazardoustoYourHealth .”Disposeinanapprovedlandfillonly .



43

12.0 Removal of ACM Vermiculite Insulation

ThisremovalisconsideredtobeClass3,highrisk .

VermiculitehasbeenusedextensivelyinCanadaasaninsulationproduct .Mostlyinattics,butalsoinwalls .VermiculitehasrecentlybeenidentifiedasaproducttobetestedforpossibleACM .Whenvermiculiteisdisturbed,theasbestos(ifpresent)willbecomeairborneandishazardoustounprotectedpeoplewhocomeincontactwithit .

TherearetwomethodsusedtocontrolthereleaseofACMdustinvermiculite .Thesearewettingagentsandvacuumsystems .

12.1 Wet Removal (high risk)

Whenthewetremovalprocessisused,theworkerrequiresfullprotection .Negativeairconditionsintheremovalareashouldbeappliedtoinsurethattherestofthebuildingisnotaffectedbytheremovalprocedures .Ifaccesstoanatticcannotbefromtheoutsidethenadecontaminationareamustbedevelopedatthebaseoftheatticaccess .Thedecontaminationareawouldalsohavetobeundernegativeairflow,thatshouldbeventedoutsidethebuildingthroughawindow,doororconstructedventhole .ThedecontaminationroomandadjoiningcleanandchangeroomsshallbeconstructedandusedasdescribedintheLevel3removalprocedures .

Usecommonwettingagentsorde-ionizedwatertosoakthevermiculiteinsulation .Itcanthenbemechanicallyremovedusingshovelsortrowels .Placetheinsulationintoaheavy-dutyimpermeablebagatleast0 .15millimeters(6mil)thickorotherclosedleak-tightcontainer .Closefullbagstightlyandsealsecurelyfordisposal .Identifywithanappropriatelabelstating,forexample“Caution–ContainsAsbestos .AvoidOpeningorBreakingContainer .BreathingAsbestosisHazardoustoYourHealth .”Disposeinanapprovedlandfillonly .Oncemostoftheasbestos/vermiculitematerialhasbeenremovedusevacuumswithHEPAfilterstocompletetheremoval .

Followremovalbyapplyingabatementgluethroughalowpressuresprayer .Dofinalairtestingtomakesuretheareaisnowsafe .

12.0REMOVALOF ACM

VERMICULITEINSULATION



44

12.2 Vacuum Removal (high risk)

Itmaybemoreappropriatetouseabulkvacuumsysteminareaswhereceilingorbuildingdamagefromwettingagentsisaconcernorincoldweatherconditionswhereaddedwettingagentsintheatticwillcausefrozenandslipperyconditions .

BulkvacuumsystemsmustbeequippedwithaHEPAfilteraswellasamechanismtocapturebulkvermiculite/asbestosmixtures .Standardasbestosvacuumsarenotpracticalastheyhavealimitedcapacityandarenotdesignedtocapturelargevolumesofbulkmaterial .

Inopenemptybuildingssuchaswarehouses,thevacuumconnections,aswellasthenegativeairsystemcanbesetrightonthefloorbeneaththeatticentry .Dustwillbecollectedmostlybythevacuum,andthenegativeairsystemwillcollectresidualairbornedust,aswellasdustthatmightarisewhenchangingvacuumbags .

Whenthebuildingisnotempty,extendvacuumhosesthroughtherooforventilationbaffles .Placethevacuumitselfoutsideorinanoutsideenclosureattachedtoanegativeairsystem .Similarly,anegativeairunit,ifusedoutsidesimultaneously,couldventilateoutsidefromtheatticthroughexistingroof-mountedvents .

Workersinsidetheatticdoingtheremovalworkmustdecontaminatewithinanenclosureconstructedinsidethebuilding .Requirementsforthisareidentifiedearlierinthisdocument .

Finalairtestingshouldbedonetoensurethebuildingissafetouse .



45

13.0 Asbestos Removal Under Cold Conditions

WSCCwillnotallowconductingClass3,high-riskabatementundercoldweatherconditions,unlessinanemergency .

Usethesetechniquesinunheatedbuildingswhereheatcannotbesupplied,whenoutsidetemperatureswon’tallowtheuseofnormalencapsulants,tapeadhesives,andpenetrants,sealantsorglues .Coldconditionsrefertoinsideoroutsidetemperaturesbelowzerothatcannotbeeasilyremediedbysupplementalheating .Italsoincludesconditionswhereshippingofabatementproductscannotbedonewithoutfreezing .

Cold weather conditions may make asbestos removal difficult. The option to delay or bring forward the abatement schedule to take advantage of heated buildings or warm temperatures should be considered. If the building is not heated it might also be that it does not have lights or power as well. Portable lighting and power will have to be installed.

The hazards of asbestos particulate in the air supply are just as real under cold conditions as they are in warm conditions.

13.1 Normal Techniques That Will Not Work Under Cold Conditions

� Wetwipingfordecontamination� Useofnormalliquidsincludingpenetrants,encapsulants,soaking

agentsandsprayglues .� Ducttape(doesnotsticktocoldsurfaces) .� Personneldecontaminationshowersandwatersupply .� Transportandstorageofabatementliquidsandtape .� FittingofPersonalProtectiveEquipment,particularlyprotectivesuits

duetotheneedforathicklayerofwarmclothingunderthePPE .� Protective“booties”,(toosmalltogooverinsulatedboots,too

slipperyforsafeuseoverfrozenpaintedorfrozenlinoleum/tilesurfaces) .

� Functionofrespirators(mayfreezeup) .� Vacuumhoses(willfreezeandsplitorsnap) .

Trying to use these items may also present significant fall hazards to workers (iced walking surfaces).

13.0ASBESTOSREMOVAL

UNDER COLDCONDITIONS



46

13.2 What Will Work Under Freezing Conditions

� Vacuumsandnegativeairsystems .Hoseswillhavetobemendedwithappropriatetapetosealsplitsastheyoccur .

� Handtools(staplers,hammers,6milpolyethylenesheeting,6milasbestoswastebags,glovebags) .

� Largeasbestossuitsthatcanbewornoverparkas .� Dedicatedinsulatedbootswithgoodanti-slipsoles .� Warmwaterwashfacilitiessetupininsulatedroomssuchasold

walk-incoolers� Specialtapedesignedforcoldweather,supplementedwithwood

stripsandstaplesforsealinghoarding .� Portabletoilets .� Breathingapparatuswithtwofiltercartridgesandtwosealedspares .

13.3 Heating

Ifsupplementalheatcanbesuppliedtoselectareas(andiftheseareasarerequired,accordingtohazardlevelClasses),thepriorityareasshouldinclude:

� Amaskthawingstationinsidetheabatementarea(directheatwillthaw respiratorcartridgesinstantly,whiletheyarebeingworn) .

� Changingrooms .� Showeranddecontaminationarea .� Primeworkingarea .� Identifiedareaforpersonnelrest .� Toiletarea .

Both the access to and egress from the showers must be heated space. Flooring will require mats to avoid ice formation and a fall hazard.



47

13.4 Heaters

Portableheatersareahazardtoworkers .Heatersfueledbykerosene,dieselorpropaneshouldbeventedoutsidethebuildingtonotendangerworkerswithexhaustfumes .Inaddition,mostheatersuseblowersystemsthatcouldspreadasbestosfibres .Theheatventsmustblowheatedairintotheenclosurethat,inturn,isunderpropernegativeaircontrol .Thenegativeairunitswillbefilteringandexhaustingheatedair .

Electricheatersrequirealotofpowerandareonlyeffectiveinsmallareas .

Effective fire safety protocols are necessary, as a fire or explosion could injure or trap workers.



48

Appendicies

Appendix 1 List of Products that may contain Asbestos

Appendix 2 Contacts List

Appendix 3 List of Laboratories for sample analysis

Appendix 4 Contractor Notification document

Appendix 5 Emergency repairs

Appendix 6 References

Appendix 7 Acknowledgements

14.0APPENDICIES



49

Asbestos - Containing Materials

Note:Thefollowinglistdoesnotincludeeveryproduct/materialthatmaycontainasbestos .Itisintendedasageneralguidetoshowwhichtypesofmaterialsmaycontainasbestos .

Appendix 1PRODUCTS

THAT MAYCONTAINASBESTOSSource:

United States Environmental Protection Agency

Acoustical Plaster

Adhesives

Asphalt Floor Tile

Base Flashing

Blown-in Insulation

Boiler Insulation

Breaching Insulation

Caulking/Putties

Ceiling Tiles and Lay-in Panels

Cement Pipes

Cement Siding

Cement Wallboard

Chalkboards

Construction Mastics (floor tile, carpet, ceiling tile, etc.)

Cooling Towers

Decorative Plaster

Ductwork Flexible Fabric Connections

Electric Wiring Insulation

Electrical Cloth

Electrical Panel Partitions

Elevator Brake Shoes

Elevator Equipment Panels

Fire Blankets

Fire Curtains

Fire Door

Fireproofing Materials

Flooring Backing

Heating and Electrical Ducts

High Temperature Gaskets

HVAC Duct Insulation

Joint Compounds

Laboratory Gloves

Laboratory Hoods/Table Tops

Packing Materials (for wall/floor penetrations)

Pipe Insulation (corrugated air-cell, block, etc.)

Roofing Felt

Roofing Shingles

Spackling Compounds

Spray-Applied Insulation

Taping Compounds (thermal)

Textured Paints/Coatings

Thermal Paper Products

Vermiculite Insulation (Zonolite)

Vinyl Floor Tile

Vinyl Sheet Flooring

Vinyl Wall Coverings

Wallboard



50

ROOFING & SIDING

WALLS & CEILINGS

Roofing Felts

Roof FeltShingles

RoofingShingles

RoofingTiles

SidingShingles

Clapboards

Flat, BuiltUp Roofs

Roofs

Roofs

Roofs

Siding

Siding

10 - 15 1910 - Present Asphalt Nonfriable

1 1971 - 1974 Asphalt Friable

20 - 32 ? - PresentPortlandCement

Nonfriable

20 - 30 1930 - PresentPortlandCement

Nonfriable

12 - 14 ? - PresentPortlandCement

Nonfriable

12 - 15 1944 - 1945PortlandCement

NonfriableReplacing,Repairing,Demolishing

SprayedCoating

TroweledCoating

AsbestosCement Sheet

Spackle

JointCompound

TexturedPaints

Millboard,Rollboard

VinylWallpaper

InsulationBoard

Ceilings,Walls, andSteelwork

Ceilings,Walls

Near Heat sourcessuch as Fireplaces,Boilers

Walls,Ceilings

Walls,Ceilings

Walls,Ceilings

Walls,CommericalBuildings

Walls

Walls

1 - 95

1 - 95

20 - 50

3 - 5

3 - 5

4 - 15

80 - 85

6 - 8

30

1935 - 1978

1936 - 1978

1930 - Present

1930 - 1978

1945 - 1977

? - 1978

1925 - ?

?

?

Portland Cement,Sodium Silicate,Organic Binders

Portland Cement,Sodium Silicate

Portland Cement

Starch, Casein,Synthetic Resins

Asphalt

Starch, Lime,Clay

Silicates

Friable

Friable

Nonfriable

Friable

Friable

Friable

Friable

Nonfriable

Friable

Water Damage,DeteriorationImpact

Water Damage,DeteriorationImpact

Cutting, Sanding,Scraping




Cutting,Demolition

Removal, Sanding,Dry Scraping,Cutting


Replacing,Demolishing

Replacing,Repairing,Demolishing




What kinds of building materials may contain asbestos?

Product Location % of Asbestos Dates of Use BinderFriable

NonfriableHow fibers can

be released



51

FLOORS

PIPES & BOILERS

Vinyl -Asbestos Tile

Asphalt -Asbestos Tile

Resilient Sheet Flooring

MasticAshesives

Cement Pipeand Fittings

BlockInsulation

Floors

Floors

Floors

Sheet Flooringand Tile Backing

Water andSewer Mains

Boilers

21 1950 - 1980?Poly (vinyl) -Chloride

Nonfriable

26 - 33 1920 - 1980? Asphalt Nonfriable

30 1950 - 1980? Dry Oils Nonfriable

5 - 25

20 - ?

6 - 15

1945 - 1980?

1935 - Present

1890 - 1978

Asphalt

Portland Cement

MagnesiumCarbonate,Calcuim Silicate

Friable

Nonfriable

Friable

PreformedPipe Wrap

CorrugatedAsbestosPaper

Paper Tape

Putty(mudding)

Pipes

Pipes, High Temp.Moderate Temp.

Furnaces, Steam Valves, Flanges, Electrical Wiring

PlumbingJoints

50

9035 - 70

80

20 - 100

1926 - 1975

1935 - 1980?1910 - 1980?

1901 - 1980?

1900 - 1973

MagnesiumCarbonate,Calcuim Silicate

Sodium Silicate,Starch

Polymers,Starches, Silicates

Clay

Friable

Friable

Friable

Friable

Damage,Cutting,Deterioration


Tearing,Deterioration

Water Damage,Cutting,Deterioration





Demolition,Cutting,Removing


Source: United States Environmental Protection Agency.

Product Location % of Asbestos BinderFriable

NonfriableHow fibers can

be releasedDates of Use



52

Safety

WorkersSafetyandCompensationCommissionoftheNorthwestTerritories

SeniorSafetyOfficer Telephone: 867-669-4403

TollFree: 800-661-0792

Fax: 867-873-4596

TollFreeFax: 866-277-3677

Transportation and Disposal

EnvironmentandNaturalResources,EnvironmentalProtectionService

HazardousSubstancesSpecialist Telephone: 867-873-7645

Fax: 867-873-0221

Public Works and Services

DepartmentalAsbestosCoordinator Telephone: 867-920-8835

867-920-8088

Fax: 867-873-0226

FortSmithRegionalSuperintendent Telephone: 867-872-7401

Fax: 867-872-2830

InuvikRegionalSuperintendent Telephone: 867-777-7140

Fax: 867-777-3463

NorthSlaveRegionalSuperintendent Telephone: 867-873-7650

Fax: 867-873-0257

FtSimpsonAreaDirector Telephone: 867-920-3447

Fax: 867-873-0100

Appendix 2CONTACTSLIST



53

Appendix 3 - Laboratories

PHH ARC ENVIRONMENTAL Tel: 780-425-6600 Ext 241 200, 9707 – 110 STREET EDMONTON, AB T5K 2L9 email [email protected]

ENVIROWORKS Tel: 780-457-4652 1224 KLARVATTEN COURT EDMONTON, AB T5Z 3N4

ENVIROTEST LABORATORIES Tel: 780-413-5227 9936-67th AVENUE 800-668-9878 EDMONTON, AB T6E 0P5

PSC ANALYTICAL Tel: 780-465-1212 4619-42nd AVENUE 800-668-9878 EDMONTON, AB T6E 5R2

Appendix 3LABORATORIES



54

CONTRACTOR NOTIFICATION AND ACKNOWLEDGEMENTOF HAZARDOUS MATERIALS

I hereby acknowledge that I have been notified of and am aware that the GNWT Asset buildings on the attached list contains Hazardous Material, specifically:

Located in Room(s) and/or Area(s) of the Asset:

and that proper procedures must be followed while working with this material or in these buildings. Specialized safety equipment and training of workers may be required depending on the scope of work identified.

Date: Contract #:

Contractor Signature: Title:

PW&S Signature: Title:

Appendix 4CONTRACTORNOTIFICATIONDOCUMENT



55

Appendix 5EMERGENCY

REPAIRS

Emergency Response and Repair ProceduresAsbestosemergencysituationsmayoccuratanytimeduetowaterdamage,physicaldamage,oranyotherdamagewhichmightcausethereleaseofasbestosfibresintheairandcouldposeahazardtohumanhealthandtheenvironment .Anydamagetoasbestosmaterialsrequiresspecialattention,andcertainemergencyproceduresmustbefollowedatsuchtimes .Thefollowingarelistsofprocedurestobefollowedbythebuildingoccupants,employees,theMaintenanceCoordinatorandtheRegionalAsbestosCoordinator,inanasbestosemergencyevent .

DamagetoknownACM(asbestoscontainingmaterials),wherethepossibilityexiststhatareleaseofairbornefibrecouldoccurorhaveoccurred,aretobemanagedbyhavingbuildingoccupants:

A. Immediately stop all activities that may further disturb the damaged material.

B. Vacate the affected area.

C. Isolate the affected area the best possible way through restricting access into and out of the affected area, and closing doors. This can be done by locking doors and posting signs or by stationing monitors to prevent access.

D. Notifying the Program Manager, PWS Facility Manager Maintenance Coordinator and other affected or applicable departmental building management.

PWSstaff(wearingappropriatePersonalProtectiveEquipment)willcontainthedamageandfibrereleaseby:

A. Turning off ventilation equipment or other wise restrict air flow in the affected area. Even with equipment turned off air grills and louvers are to be sealed to prevent fibre migration into the ventilation system.

B. Coordinating immediate access to responding abatement staff, consultants or contractors.

C. Expanding the control area if necessary.

D. Notifying WSCC of the damage and steps being taken.

E. Having trained asbestos worker(s), under the guidance and coordination of the Regional Asbestos Coordinator, clean up the affected area and make any necessary repairs. When possible, repairs are to be done when the building is not occupied.

F. Conduct air sampling including clearance sampling.

Whereminordamagehasoccurredbutfibrereleaseisnotevidentstepsshouldbetakentopreventfurtherdamage .ForexamplewheresmallbumpshaveresultedindentsorcrackingofwallboardandACMisknowntoexistinthedrywallcompound,immediatestepsshouldbetakentoensurenofurtherdamageoccurs .

This can be as simple as ensuring persons cannot be in contact with the affected material.

PWS will send trained workers (wearing personal protective equipment) to perform temporary repairs or install temporary containment material.

Proper repairs will be performed while the building is not occupied. Bulk samples will be taken for analysis.



56

ReferencesCONSOLIDATIONofASBESTOSSAFETYREGULATIONS

Availableonlineat:http://www .justice .gov .nt .ca/PDF/REGS/SAFETY/Asbestos-Safety .pdf

GUIDELINEFORTHEMANAGEMENTOFWASTEASBESTOS

Availableonlineat:http:www .enr .gov .nt .ca/library/pdf/eps/asbestos2 .pdf

ASBESTOSMANAGEMENTPLANFORGNWTBUILDINGS(OperatedandMaintainedbyPWS) .PreparedbyTechnicalSupportServices,AssetManagementDivision,PWSinconsultationwiththeWorkers’CompensationBoard .May10,2000

ASBESTOSMANAGEMENTFORGNWTASSETS(MaintainedbyPWS),INSPECTIONREPORT2001-2002,PreparedbyTechnicalSupportServices,AssetManagementDivision,PWS,August2002 .

Appendix 6



57

AcknowledgementsInformationinthisdocumentcamefromnumeroussources .

OurAppreciationto:

ProvinceofNewBrunswick,

TheResilientFlooringCoveringInstituteand

ArcticEnvironmentalServicesLtd .

AndaspecialthankstoWSCCfortheirassistanceandcooperation .

TheseguidelinesareintendedtoprovideassistancetotheDepartmentofPublicWorksandServicesandprojectstaffwhilecompletingprojectsinvolvingasbestoscontainingmaterial,toensuretheprotectionofbothworkersandbuildingoccupants,aswellastocomplywithregulatoryrequirements .

DisclaimerThematerialpresentedinthisdocumenthasbeenpreparedinaccordancewithgenerallyrecognizedengineeringprinciplesandpractices,andisforgeneralinformationonly .Thisinformationshouldnotbeusedwithoutfirstsecuringcompetentadvicewithrespecttoitssuitabilityforanygeneralorspecificapplication .

NeithertheGNWT,noranyemployeethereof,shallunderanycircumstanceswhatsoeverbeunderanyliabilitywhatsoevertoanypersonforanyloss,damageorexpensesofwhatevernatureorkindarisingorresultingdirectlyorindirectly,whetherincontractorintort,fromrelianceontheaccuracyorcompletenessoftheinformationcontainedinthisdocument .

Appendix 7


Documents

General Guidelines Asbestos RemovAl And disposAl …...GENERAL GUIDELINES: ASBESTOS REMOVAL AND DISPOSAL Executive Summary This document describes various types of asbestos, situations