Document e5jQdQv7M5YEp5oG0xJpObj3g

CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 Voluntary Use and Exposure Information Profile PerfluorooctanoicAcid and Salts 1. CHEMICAL IDENTIFICATION Chemical Name: CAS Number: PerfluorooctanoiAccid & Salts Various,including: 335-67-1(acid) 3825-26-1(ammonium salt) 335-95-5(sodiumsalt) 11. COMPANY IDENTIFICATION Company Name: 3M Site Locations: 1) 10746 hinovationRoad CottageGrove,MN 55016 2) 1400 StateDocks Road Decatur,A-L 35601 Technical Contact: Phone: Address: W.A. Weppner 651n33-6374 3M Center,Building236-lB-10 St.Paul,NN 55144 111. ON-SITE ACTMTIES CAS Mfg. (1997) IMporte (1997) 335-67-1 3825-26-1 335-95-5 Less Than 1,100,000lb/yr. Lessthan 200,000 lbs. Estimate the amount of subjectchemical distributedoff-site:48.5% CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 2 Narrative Description and Process Flow Schematic: Perfluorooctanoicacid and itssaltsareproduced from perfluorooctanoylfluoridethathas been synthesizevdiatheSimons ElectroChemical Fluorinatio(nECF) process.The startinfgeedstockisoctanechloride. C7H15COC I + 16 HF ------>--ECF C8Fl7COF + 15H2 + HCI Perfluorooctanoyflluorideisnot itselafcommerciallyviableproduct,but is100% used as an on-site intermediatienthemanufactureofperfluorooctanoiacid(PFOA) and thesaltsofthe acid.The PFOA ismanufacturedby base hydrolyzingtheperfluorooctanoyflluorideto thecorresponding octanoicacidinbatchreactors.The saltsaremanufacturedby base neutralizatiofntheacidto the saltina separatereactor. The followingblock flow diagramdescribestheprocessdiscussedabove. BLOCK FLOW DIAGRAM FOR PERFLUOROOCTANOIC (PFOS) ACID Electro-ChemicalFluorinationCells (Octanoylchloride+ BF + electricaelnergy) Perfluorooctanoylfluoride IF Secondary Reactors TreatmentwithStrong Base and Acid IF Perfluorooctanoicacid and varioussalts CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 3 IV. SITE RELEASE AND TRANSFER INFORMATION FOR TRI CHEMICALS Not Applicable. V. SITE RELEASE AND TRANSFER INFORMATION FOR NON-TRI CHEMICALS While analyticamlethods have improved overtime,largevariabilisttyilelxistsforcertainmatrices and compounds, so dataavailablfeorthisreportismostlyofa qualitativneature.Although limited monitoringdataexistsm,ost emissionand waste estimatesarebased upon processmodels and engineeringcalculationsE.ngineeringcalculationhso,wever,have limitationwsith respectto fluorochemicalbsecausefluorochemicalosseswere not alwaysincludedintheanalysisof each intermediatsetep. The accuracyofthe emissionsdatasubmittedvariesdue to severalfactors.Batch process systems are difficultto measure due to quickly changing process conditions,venting pressuresand difficulty in isolatingprocessesto take measurements. Additionally,the unique characteristicosf these compounds cause them to behave differentlyfrom conventionalcompounds, and physicalchemical data propertiesarenot availableforallintermediatereactionsteps. Production of perfluorooctanoylcompounds began in Decatur in 1999. In prioryears Decatur's emissions resultfrom byproduct formation. A. ON-SITE AIR RELEASES ALL PLANTS -Fugitiveemissionsmay occur from vacuum charging from drums, sampling from reactors,drumming of product/intermediatef,lakingmonomer, drying operations. Materialsmay be handled in a molten or solidstate;vapors areproduced from molten material. IndustrialHygiene monitoring has been conducted forsome compounds. Some minor amounts of these compounds have been detectedas fugitiveemissions during industrial hygiene exposure testing. DECATUR, ALABAMA ONLY: Wastewater fugitiveemission data was based upon 1999 wastewater testing. Fugitive emissions may have occurred during some handling stepsbut have not been quantified. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 4 Decatur,AL Estimated Total Annual Releases (lbs.1999) Estimated % N days/years Accuracy of releaseoccurs Estimate (optional) Fugitive-wastewater < I in 1999 250 Stack (point) Engineeringcalculationasnd models of processvent emissionsareused forestimatesofpoint sourceemissions. Est*unatedTotal Annual Releases (lbs.1997) Estimated % Accuracy of Estimate (optional) days/years releaseoccurs PFOA compounds No data available Cottage Grove, NfN Emissions estimatesarefrom process engineer'sestimatesand emission models. Estimated Total Annual Releases (lbs.1997) Estimated % # days/years Accuracy of release occurs Estimate (optional) Fugitive (non-point) No data available Stack (point) PFOA compounds Comments: 1950 100-200 CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 5 B. WATER RELEASES FROM SITE Decatur,AL The datapresentedwas determinedduringwastewatertestingconductedduring1998-1999. Productionofperfluorooctanoyclompounds began inDecaturin1999. Inprioryears Decatur'semissionsresultfrom byproduct. Estimated Total Annual Releases (total annual) Estimated % Accuracy of Estimate (optional) Water releases: < 30,000 Number of days/ye@ar release occurs: Releases are estimated at 250 days per year Receiving Water Name: Baker's Creek at the junction with the Tennessee River NPDES Number: ALD004023164 Comments: Cottage Grove, MN Engineering calculationswere used to estimatethe amount of materialdischarged to wastewater. The amount of materialdischarged to the riverwas determined through use of existingremoval efficiencytestingresultsfrom anotherfacilityE.stimateswere based upon 1999 production informationsince no wastewater data was availablefor 1997 or 1998. Estimated Total Annual Releases (lbs.1999) Estimated % Accuracy of Estimate (optional) Water releases: < 15,000 Number of days/year release occurs: 100-200 Receiving Water Name: Mississippi NPDES Number: MN00001449 Comments: CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 6 C. ON-SITE LAND RELEASES Decatur, AL The landtreatmentofDecatursludgewas discontinuedinmid-1998. Sludgeisnow transportetdoan offsitleandfilalf,terpassingthrougha thickenerand a sludgepress.An impoundment was used in 1997 aspartof thewastewatertreatmentoperationbut isnow only used forback-up operation. Levelsof PFOA inthesludgewere determinedfrom wastewaterdata. Estimated Total Annual Releases (lbs.1997) Estimated % Accuracy of Estimate (optional) Landffll Land Treatment/Land Amendment Surface Impoundments Underground Injection Other (specify): 0 <500 - No longerused No dataavailable/Nolongerused 0 Comments: D. OFF-SITE TRANSFERS Decatur,AL Processwastewatersaremanaged inan on-sitewastewatertreatmentfacilitaynd arenot sent tothePOTW. Dl. TransfertoPubliclOywned TreatmentWorks (POTW) Number ofdays/yeatrhereleasoeccurs: Annual Transfer (lb): 0 Estimated % Accuracy of Transfer Estimate (optional) POTW Name: StreetAddress: City: State: NPDES Number: Country: Zip: Not Applicable Comments: CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 7 CottageGrove, Processwastewatersaremanaged inan on-sitewastewatertreatmentfacilitaynd arenot sent tothePOTW. Dl. TransfertoPubliclyOwned TreatmentWorks (POTW) Number of days/yearthereleaseoccurs: Annual Transfer(lb):0 Estimated % Accuracy ofTransfer Estimate (optional) POTW Name: StreetAddress: City: State: NPDES Number: Country: Zip: Not Applicable Comments: CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 8 D2. TRANSFERS TO OTHER OFF-SITE LOCATIONS General Waste Information: There is limited information by CAS number for compound specifirceportingand off-sitteransfercsannotbe readilyverifi'eRda.ther,wastes are classifiebdy halogencontent,regulatorwyastecodes,physicalpropertieasnd non-specific fluorochemicalcategoriesW.here wastesaretrackedby CAS number, the amounts have been included. Decatur,AL A reviewof 1998 plantrecordsregardingwastedisposallocationsforDecaturfluoridecontaining(notCAS number specificw)astesindicatetshat70% was disposedthrough incineratioantvariousoff-sitleocationasnd approximately30% was landfilleadta hazardous waste landfillI.ncineratioinsnow theprimarydisposalmethod forthesematerials. Estimated Total Annual Releases (lbs.1997) Estimated % Accuracy of Estimate (optionai) Incineration: No specifiCcAS number dataavailable. Wastewater Treatment 0 (Excluding POTW) Underground Injection 0 Hazardous Waste (RCRA SubtitleC) landfill No specifiCcAS number dataavailable. Other Landfdl No specifiCcAS number dataavailable. Recycleor Recovery 0 Unknown or Other 0 Comments: CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 CottageGrove,MN CottageGrove facilituytilizeisncineratifoonralltheirdrummed wastes. Sludgefrom theCottageGrove facilitiyssenttoan industriallandfill. EstimatedTotal Annual Releases (lbs.1997) Estimated % Accuracy of Estimate(optional) Incineration: 4500 Wastewater Treatment 0 (ExcludingPOTW) Underground Injection 0 Hazardous Waste (RCRA 0 SubtitlCe) landfill Other Landffil 0 Recycleor Recovery 0 Unknown or Other Comments: CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 10 VI. ON-SITE WORKPLACE EXPOSURE CAS Number 335-67-1Company: 3M Compgny,SI)ecidtMyaterialMsanufacturinDgivision, Cottage.Grove, This information willassistEPA in characterizingthe number of workers potentiallyexposed and the magnitude, frequency, and duration of potentialexposure. When providing monitoring data,ensure that data islinkedwith worker activitiedsescribed in question 2. 1. Estimate the number of workers potentiallyexposed routinelyto the subjectchemical for each of the exposure duration times. Ifa worker isinvolved in more than one activitye,nter only his/hermost typicalactivityin the table.Don't count a worker more than once. The totalnumber in the tableshould equal the totalnumber of workers potentiallyexposed. Hours/Day <10 <.25 4 .25-1 4 1-8 >8 Days/Year 10-100 100-250 >250 4 4 4 2. Describe the routineworker activitietsowhich theworkers in question 1 are exposed: sampling, removal of filtercake,and drumming of liquids,manufacture an article,etc. For theseactivitiesd,escribethe physicalstateof the subjectchemical (liquid,gas, particulate,or aerosol,etc.)and, ifin a mixture, the chemical'sconcentration: Molten (ca 130F) materialranginginconcentratiofnrom 35-75% isvacuum charged into fractionatieoqnuipment.Variousconcentrate(drangingup to 100%) molten"fractionsa"re drummed and latervacuum-charged to otherprocessequipment. Other exposure opportunitieisnvolvequalitysampling,processareacleanup,andmaintenance activitie(se.g., changing flange,hose,pipe,valve,filtepru,mp or sightglass). CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 3. Provide industrialhygitne monitoring data,ifavailablew,ith a briefdescriptionof the sampling method and exposure scenariomonitored, e.g.d,escribethe specificworker activitiepserformed by the individualsmonitored. For privacy considerations,pleasedo not includeany personalidentifierssuch as a worker's name or socialsecuritynumberwith any data submitted to EPA. There isno chemical-specifipcersonalindustriahlygienemonitoringdataor area/source monitoringdataforthisspecifimcaterialatthisfacilityR.ecent qualitativaessessmentof potentiaelxposureto thismaterialunder 3M's ongoing industriahlygieneprogram has identifiesdignificanetxposuretasks,and appropriateengineeringa,dministrativaend personal protectivequipment controlshave been established. Each 3M plantthatproducesfluorochemicalcarboxylatehsas an industriahlygieniston staff and issupportedby a corporateindustriahlygienegroup. 3M's industriahlygieneprogram focuseson task-basedexposureassessmentand control.Exposures areidentifieadnd assessedqualitativealnyd/orquantitativelQyu.alitativaessessmentsareperformed by an industriahlygienist.Quantitativaessessmentsincludetask-basedpersonalsampling for certains,pecificfluorochemicalasnd/orsourceor areasampling.The resultsof the assessmentssupportdecisionson exposurecontrol.Engineeringcontrolsarepreferredb,ut personalprotectivequipmentmay be used on an interimbasisorwhen effectivengineering controlisnotfeasible. 4. Brieflydescribethe engineeringcontrolsused to minimize exposure to thischemical: Materialsaretransferreudsingclosedpiping(wherepossible)from reactorvesselsto other containersV.acuum chargingof materialsfrom drums isa standardpractice.Positionable localexhaustventilatiohnoods aresituateadtsignificanptointsourcessuch as atdrum bangs when drumming. Generalroom airprovidesfordilutioonfairbornematerials. 5. Brieflylisthe personalprotectivequipment your workers regularlywear toprevent exposure ofthischemical: Processoperatingstandardslistherespirato(re.g.s,uppliedair,halfmask orfullfacepiece organicvapor cartridgweithparticulatperefilteorr,particulatfeilteringg)l,oveby elastomer (e.g.n,eopreneornitrilec)h,emicalprotectivcelothing(e.g.2,-piecePVC disposable coverallse)y,e protectio(ne.g.c,hemicalsplashgoggleswithorwithoutfullfaceshield dependingon typeof respiratoursed)tobe used by the employee when thetaskinvolves exposureto a particulafrluorochemicalmaterial. Comments: (Thissectionisavailablteo clarifytheresponsesgiven.Attachadditionaplages ifdesired.) CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 12 CAS Number 335-67-1 Company: Decatur,AL 3M Com-DM, SpeciallyMaterialsManufacturinszDivision, This information will assistEPA in characterizing the number of workers potentially exposed and the magnitude, frequency, and duration of potential exposure. When providing monitoring data, ensure that data is linked with worker activitiesdescribed in question 2. 1. Estimate the number of workers potentially exposed routinely to the subject chemical for each of the exposure duration times. If a worker is involved in more than one activity,enter only his/her most typical activityin the table. Don't count a worker more than once. The total number in the table should equal the total number of workers potentially exposed. Hours/Day Days/Year <10 10-100 100-250 >250 <.25 4 .25-1 4 4 4 32 1-8 4 >8 2. Describe the routine worker activitietso which the workers in question I are exposed: sampling, removal of filtercake, and drumming of liquids,manufacture an article,etc. For these activitiesd,escribe th@ physical stateof the subject chemical (liquid,gas, particulate,or aerosol,etc.)and, ifin a mixture, the chemical's concentration: This materialisa solidatroom temperature (meltingpoint = 120 F) which is drummed as a molten liquid(concentration35-75%). Other exposure opportunitieisnvolve quality sampling, process areacleanup, and maintenance activitie(se.g.,changing flange,hose, pipe, valve,filterp,ump or sightglass).Products containing335-67-1 at concentrationsranging from 75% to 100% are melted and added to process reactorsas raw materials. 3. Provide industrialhygiene monitoring data, ifavailable,with a brief description of the sampling method and exposure scenario monitored, e.g.,describe the specificworker activitiesperformed by the individuals monitored. For privacy considerations,please do not include any personal identifiersuch as a worker's name or socialsecurity number with any data submitted to EPA. There isno chemical-specificpersonal industriahlygiene monitoring data or area/source monitoring data forthisspecificmaterialatthisfacilityR.ecent qualitativaessessment of potentialexposure to thismaterialunder 3M's ongoing industriahlygiene program has identifiedsignificanetxposure tasksand appropriateengineering,administrativeand personal protectiveequipment controlshave been established. Each 3M plantthatproduces fluorochemicalcarboxylateshas an industriahlygieniston staff and issupported by a corporateindustriahlygiene group. 3M's industriahlygiene program focuses on task-basedexposure assessment and control.Exposures areidentifiedand assessed qualitativelaynd/orquantitatively.Qualitativeassessments areperformed by an industriahlygienist.Quantitativeassessments includetask-basedpersonal sampling for certain,specificfluorochemicalsand/orsource or area sampling. The resultsof the assessments support decisionson exposure control.Engineering controlsarepreferred,but personal protectiveequipment may be used on an interimbasisor when effectiveengineering controli.-n,ot fea.,;ible. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 13 4. Briefly describe the engineering controls used to minimize exposure to this chemical: During draining and charging, the operators use local exhaust to control any mists or vapors. 5. Briefly list the personal protective equipmen t your workers regularly wear to prevent exposure of this chemical: The required PPE for draining, charging and sampling consists of respiratory protection (full face suppliedairfordrainingand organic vapor cartridgerespiratorswith P100 prefilterfsor charging and sampling) rubber gloves and splashresistantd,isposableclothing. Comments: (Thissectionisavailableto clarifythe responses given. Attach additionalpages ifdesired.) CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 14 CAS Number 3825-26-1 Company: 3M Comlpgny,SI)ecialMlayterialsManufacturingDivision, CottageGrove, MN This informationwillassistEPA in characterizingthe number ofworkers potentiallyexposed,. and the magnitude, frequency,and durationof potentialexposure. When providing monitoring data,ensure thatdata islinkedwith worker activitiedsescribedin question2. 1. Estimate the number ofworkers potentialleyxposed routinelyto the subjectchemical for each of the exposure duration times. If a worker is involved in more than one activity,enter only his/her most typical activity in the table. Don't count a worker more than once. The total number in the table should equal the total number of workers potentially exposed. Hours/Day Days/Year <10 10-100 100-250 >250 <.25 4 .25-1 2 8 1-8 2 4 2 >8 2. Describe the routine worker activitietso which the workers in question 1 are exposed: sampling, removal of filtercake, and drumming of liquids,manufacture an article,etc. For these activitiesd,escribe the physical stateof the subject chemical (liquid,gas, particulate,or aerosol,etc.)and, ifin a mixture, the chemical's concentration: The material(3825-26-1).isproduced in a slurryform and close-transferretdo spray drying equipment. The powdered product (ca 100% concentration)isdrummed. In thisform the materialisentrainableas an airbornedust. Itis alsohygroscopic. The powder may be shipped as a product or dissolvedin water. Drumming powder, transferrinpgowder from one containerto another,and dissolvingpowder in water representsignificanitnhalationand dermal exposure tasks.Handling thematerialdissolvedin water presentsmainly dermal exposure potential.Maintenance activitie(se.g.,changing flange,hose,pipe,valve,filter, pump or sightglass)provide additionalopportunityformainly dermal exposure. 3. Provide industrialhygiene monitoring data,ifavailable,with a briefdescriptionof the sampling method and exposure scenario monitored, e.g.,describe the specificworker activitiepserformed by the individualsmonitored. For privacy considerations,please do not include any personal identifiersuch as a worker's name or socialsecuritynumber with any data submitted to EPA. Personal sampling forthismaterialiscurrently(late1999 to present)done using OSHA VersatileSampler tubeswith XAD-4 resinand mixed celluloseesteror glass fiberprefilter. Sample analysisis by GC-ECD. See attachedtableforairsample results. There has been area/sourceairmonitoring data and/or surfacewipe sampling data collected forthismaterialatthe plant.Area/source sample resultsand/or surfacewipe sample results are used to identifyareaswith employee exposure potentialas partof exposure assessment under 3M's industriahlygiene program and are not measurements of actualemployee exposures. Hence, they arenot includedwith thissubmission. Priorto 1999, these samples were considered to be semi-validated. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 15 Surfacesinproductionand administratioanreaswere sampled beginningin 1994 and most recentlyin2000. Resultsindicatedthepresenceofthesematerialson floorsand equipment surfacesinproductionareas.Thisresultedin improvementsto Hazard Communication practicesp,ersonalhygieneemphasis,personalprotectivequipment emphasis,and severalengineeringand administrativcehanges. The sample resultsof any airmonitoringarecompared totheACGIH TLV-TWA of 0.01 Mg/M3 [skin]for3825-26-1. Each 3M plantthatproducesfluorochemicalcarboxylatehsas an industriahlygieniston staff and issupportedby a corporateindustriahlygienegroup. 3M's industriahlygieneprogram focuseson task-basedexposureassessmentand control.Exposures areidentifieadnd assessedqualitativealnyd/orquantitativelQyu.alitativaessessmentsareperformed by an industriahlygienist.Quantitativaessessmentsincludetask-basedpersonalsampling for certains,pecificfluorochemicalasnd/orsourceor areasampling.The resultsof the assessmentssupportdecisionson exposurecontrol.Engineeringcontrolsarepreferredb,ut personalprotectivequipmentmay be used on an interimbasisorwhen effectiveengineering controlisnotfeasible. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 16 ExposureTask Exposure Sample Concentration Geom Number Yr-Number 38m2g5-/2m6-13* Mini mum Maximum Geom SDtedv mean Manual transfer of powdered material 97-075 32. 1 4.1 32.1 11.5 4.3 97-076 4.1 Operate spray dryer 91-001 0.04 0.001 0.04 0.009 6.8 92-034 0.016 93-017 0.001 Dissolvingpowdered materialindrums 98-075 0.559 0.11 4 0.7 3.4 98-076 1.51 00-7841 4 00-7841 0.9 00-7398 0.11 00-7403 0.35 Operate spray dryer sampling product 98-055 1.87 <0.002 1.87 0.91 2.8 Operate spray dryer change drums 95-030 <0.002 98-106 0.443 Operate other process 91-003 0.04 0.004 <0. 1 0.063 1.9 Washing filters 95-026 <0.1 Allexposure concentrationsrepresenttask-based personal samples. ** The TWA exposure concentrationwas 11.4 mg/m 3. This was a one-time task thatwas not repeated. 4. Briefly describe the engineering controls used to minimize exposure to thischemical: Materialsare transferredusing closedpiping (where possible)from reactorvesselsto other containers.Vacuum charging of materialsfrom drums isa standardpractice.Positionable localexhaust ventilationhoods are situatedat significanptoint sources such as at drum openings when drumming. The drumming process areas areenclosed from other process areas. Facilitiehsave been establishedforemployees to decontaminate (doff and containerize contaminated chemical protectiveclothing,remove respiratoryprotectionfor decontamination, and wash hands and other skin surfacesthatmay have been exposed) after performing significanptowder exposure tasks. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 17 5. Briefly listthe personal protective equipment your workers regularly wear to prevent exposure of this chemical: Process operating standards listthe respirator(e.g.,fullface supplied air [forexposures up-to 1000x OEL], halfmask [upto IOx theOEL] or fullfacepiece[upto 5Ox theOEL] organic vapor cartridgweithP 100 particulatperefilterg)l,oveby elastomer(e.g.n,eopreneornitrile), chemicalprotectivcelothing(e.g.2,-piecePVC orplaintyvektmdisposablecoveralls)e,ye protectio(ne.g.c,hemicalsplashgoggleswith orwithoutfallfaceshieldependingon typeof respiratoursed)tobe used by theemployee when thetaskinvolvesexposureto a particular fluorochemicamlaterial. Comments: (Thissectionisavailablteoclariftyheresponsesgiven.Attachadditionaplages ifdesired.) Processtasksinvolvingexposureto3825-26-1inparticulatfeorm currentlyrequirerigorous decontaminationusingdecontaminationfacilitiaetstachedto processareas.3M has recently (2000)establisheadBiologicalLimitValue of5 ppm forperfluorooctanoaatneioninblood serum. Biologicamlonitoringwas voluntaryin1995 and 1997. In severalcases,employees with higherserum levelswere removed from furtherexposure.All employeeswith potential forsignificanetxposureto 3825-26-1,335-67-1,or335-95-5 arerequiredto participatien the biomonitoringprogram to work insuch areas. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 18 CAS Number 3825-26-1 Company: 3M Compgny, SpeciallyMaterialsManufacturing Division, Decatur,AL This information will assistEPA in characterizingthe number of workers potentiallyexposed and the magnitude, frequency, and duration of potentialexposure. When providing monitoring data, ensure that data islinked with worker activitiedsescribed in question 2. 1. Estimate the number of workers potentiallyexposed routinelyto the subject chemical for each of the exposure duration times. If a worker isinvolved in more than one activity,enter only his/hermost typicalactivityin the table. Don't count a worker more than once. The totalnumber in the table should equal the totalnumber of workers potentiallyexposed. Hours/Day <10 <.25 .25-1 1-8 >8 Days/Year 10-100 100-250 52 >250 2. Describe the routine worker activitiesto which the workers in question 1 are exposed: sampling, removal of filtercake, and drumming of liquids,manufacture an article,etc. For these activitiesd,escribe the physical stateof the subject chemical (liquid,gas, particulate,or aerosol,etc.)and, ifin a mixture, the chemical's concentration: This materialisadded by vacuum charge or poured intoprocess vessels as a raw materialin aqueous solution(concentration30%). Exposure isprimarilyvia skincontact.Other exposure opportunitiesinvolve qualitysampling,process area cleanup, and maintenance activitie(se.g.c,hanging Range, hose,pipe,valve,filterp,ump or sightglass).Resultant products contain 0.5% 3825-26-1, which isremoved (tolessthan 10 ppm) by subsequent process steps. 3. Provide industrial hygiene monitoring data, ifavailable,with a brief description of the sampling method and exposure scenario monitored, e.g.,describe the specificworker activitiesperformed by the individuals monitored. For privacy considerations, please do not include any personal identifierssuch as a worker's name or social security number with any data submitted to EPA. There isno chemical-specificpersonal industrialhygiene monitoring data or area/source monitoring data forthisspecificmaterialatthisfacilityR.ecent qualitativaessessment of potentialexposure to thismaterialunder 3M's ongoing industriahlygiene program has identifiedsignificanetxposure tasksand appropriateengineering,administrativeand personal protectiveequipment controlshave been established. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 19 Each 3M plantthatproducesfluorochemicaclarboxylatehsas an industriahlygieniston staff and issupportedby a corporateindustriahlygienegroup. 3M's industriahlygieneprogram focuseson task-basedexposureassessmentand control.Exposures areidentifieadnd assessedqualitativealnyd/orquantitativelQyu.alitativaessessmentsareperformed by an industriahlygienist.Quantitativaessessmentsincludetask-basedpersonalsamplingfor certains,pecificfluorochemicalasnd/orsourceor areasampling.The resultsof the assessmentssupportdecisionson exposurecontrol.Engineeringcontrolsarepreferredb,ut personalprotectivequipmentmay be used on an interimbasisor when effectiveengineering controlisnot feasible. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 20 4. Brieflydescribe the engineeringcontrolsused to minimize exposure to thischemical: Positionablelocalexhaustventilatiohnoods aresituatedatsignificanptoint sourcessuch as at drum openingswhen drumming. Generalroom airprovidesfordilutioonfairbornematerials. 5. Brieflylistthe personalprotectivequipment your workers regularlywear to prevent exposure of this chemical: Process operating standards listthe respirator(e.g.,supplied air,half mask or fullfacepiece organicvapor cartridgewith PIOO particulatperefilterg)l,ove by elastomer(e.g.,neoprene or nitrile)c,hemical protectiveclothing(e.g.2,-piecePVC disposablecoveralls)e,ye protection (e.g.,chemical splashgoggles with or without fullfaceshielddepending on type of respirator used) to be used by the employee when the task involvesexposure to a particular fluorochemicalmaterial. Comments: desired.) (This sectionisavailableto clarifytheresponsesgiven. Attach additionalpages if CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 21 CAS Number 335-95-5 Company: 3M CoMpM, SpecialLyMaterialsmanufacturinszDivision, CottageGrove, MN This information will assist EPA in characterizing the number of workers potentially exposed and the magnitude, frequency, and duration of potential exposure. When providing monitoring data, ensure that data is linked with worker activitiesdescribed in question 2. 1. Estimate the number of workers potentially exposed routinely to the subject chemical for each of the exposure duration times. If a worker is involved in more than one activity,enter only his/her most typical activity in the table. Don't count a worker more than once. The total number in the table should equal the total number of workers potentially exposed. Hours/Day Days/Year <10 10-100 100-250 >250 <.25 2 .25-1 4 1-8 >8 2. Describe the routine worker activitiesto which the workers in question 1 are exposed: sampling, removal of filtercake, and drumming of liquids,manufacture an article,etc. For these activitiesd,escribe the physical stateof the subject chemical (liquid,gas, particulate,or aerosol,etc.)and, ifin a mixture, the chemical's concentration: This materialisproduced in an aqueous solutionat20% concentration.The materialisnot volatilein thisform and exposure isprimarilyto skin during sampling,drumming of the solution,and maintenance activities. 3. Provide industrialhygiene monitoring data, ifavailable,with a brief description of the sampling method and exposure scenario monitored,.e.g.,describe the specificworker activitiesperformed by the individuals monitored. For privacy considerations,please do not include any personal identifierssuch as a worker's name or socialsecurity number with any data submitted to EPA. There isno chemical-specificpersonal industriahlygiene monitoring data or area/source monitoring data forthisspecificmaterialatthisfacilityF.or most areasof the facilityr,ecent qualitativeassessment of potentialexposure to thismaterialunder 3M's ongoing industrial hygiene program indicatesa low exposure potentialforthismaterial.Nonetheless, 3M has identifiedexposure tasksand appropriateengineering,administrativeand personal protective equipment controlshave been established. Each 3M plantthatproduces fluorochemicalcarboxylateshas an industrialhygieniston staff and issupported by a corporateindustriahlygiene group. 3M's industriahlygiene program focuses on task-basedexposure assessment and control.Exposures are identifiedand assessed qualitativelaynd/or quantitatively.Qualitativeassessments are performed by an industriahlygienist.Quantitativeassessments includetask-basedpersonalsampling for certain,specificfluorochemicalsand/orsource or area sampling. The resultsof the assessments support decisionson exposure control.Engineering controlsarepreferred,but personal protectiveequipment may be used on an interimbasis or when effectiveengineering controlisnot feasible. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 22 4. Brieflydescribe the engineering controlsused to minimize exposure to thischemical: During draining,the operatorsuse localexhaust to controlany mists or vapors. 5. Briefly listthe personal protectiveequipment your workers regularly wear to prevent exposure of this chemical: The required PPE forsampling and drainingconsistsof rubber gloves,safetyglasses,and splashresistantd,isposablecoveralls. Comments: (Thissectionisavailablteoclariftyheresponsesgiven.Attachadditionaplagesif desired.) CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 23 VII. CHEMICAL END USES A. END USE AS AN INTERMEDIATE CONSUMED TO MAKE OTHER CHEMICALS Al. On-Site Use as a Intermediate: Product chemical class or product chemical (Include CAS number ifappropriate) % of total* volume of subject chemical manufactured or imported I The vastmajorityofperfluorooctanoaicid (335-67-1)isconsumed tomake theammonium 50% (3825-26-1)orsodium salts(3356-95-5) 2. 3. 4. *As reported in Part III,p.2 A2. Off-Site Use as an Intermediate: Product chemical class or product chemical (Include CAS number ifappropriate) % of total volume of subject chemical manufactured or impor ted* 1. 2. 3. 4. *As reported in Part III,p.2 CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 24 B. END USES OTHER THAN AS A CONSUMED INTERM[EDIATE The followingtwo tablespresenta summary oftheinformationcontainedin VII.B. Table I detailtsheend applicationisnwhich a particulaCrAS Number isused. For each CAS number, thepercentused ineach applicatiotnotalsto 100%. Table 1. CAS Number by Application CAS NUMBER 335-67-1 335-95-5 3825-26-1 APPLICATION 1 . Reactive intermediateforsynthesisof fluoroacrylatesterused in coatingapplications 1 . Processingaid in the industriaslynthesisof fluoropolymers and fluoroelastomers 1 . Processing aidin the industrialsynthesisof fluoropolymers and fluoroelastomers 2. Post Polymerizationaid to stabilizfeluoropolymer and fluoroelastomersuspensions 3. Processingaid forfactoryappliedfluoropolymer coatings Table 2 detailsthe multipleCAS Numbers which may be used in any one application. Table 2. Application by CAS Number CAS NUMBER 335-67-1 335-95-5 3825-26-1 3825-26-1 3825-26-1 APPLICATION Reactive intermediate Processingaidforfluoropolymer and fluoroelastomerpolymerizations Post-polymerizationaidto stabilizfeluoropolymer and fluoroelastomersuspensions Processingaidin coatingfluoropolymers CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 25 CAS Number 3825-26-1,Ammonium Perfluorooctanoate Use Number I of 3 Description of Chemical End Use: Used as a processingaid inthe industriaslynthesisof--fluoropolymersand fluoroelastomerwshich have a varietyof industriaalnd commercial uses. These fluoropolymersand fluoroelastomerhsave use in consumer products. Percentoftotalmanufacturedor imported Volume goingtothisuse:98 1.0 Check allphysicalforms ofthe chemicalduringthisuse: Ifused in a mixturecheck appropriatbeox To indicatweeightfractionA.verage Values areacceptable: X <1 1-30% 30-60% 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water or solvent- wet solid Gas orvapor X Liquidsolution X Other(Explain) As dry coatingson metalimplements; asmolded parts;asfabricatedarticles. Use Number 2 of 3 Descriptionof Chemical End Use: Used as postpolymerizationprocessingaidto stabilize fluoropolymerand fluoroelastomesruspensionspriorto ftirtheirndustriaplrocessing. Percentof totalmanufacturedor imported Volume goingtothisuse: I =L0.5 Check allphysicalforms ofthe chemicalduringthisuse: Ifused ina mixturecheck appropriatbeox To indicateWeight fractionA.verage Values areacceptable: X <1% 1-30% 30-60% 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water orsolvent- wet solid Gas or vapor x Liquidsolution X Other(Explain) As drycoatingon metalimplements, as molded parts,as fabricatedarticles. *<0.5% inliquidsolution<,0.0001% (Ippm) indrycoatings. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 26 Use Number 3 of 3 Descriptionof Chemical End Use:Used as processingaidforfactoryappliedfluoropolymer coatingson fabricsm,etal surfacesand fabricateodr molded parts. Percentof totalmanufacturedor imported Volume going tothisuse: I 0.5 Check allphysicalforms ofthe chemicalduringthisuse: Ifused in a mixturecheck appropriatbeox To indicateWeight fractionA.verage Values areacceptable: X <1% 1-30% 30-60% 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water or solvent- wet solid Gas orvapor x Liquidsolution X Other(Explain) Dry coatingon metalimplements, as molded parts,as fabricatedarticles. *<0.5% inliquidsolution<,0.0001% (Ippm) indrycoatings. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 27 CAS #335-95-5 Sodium Perfluorooctanoate Use Number 1 of I Description of Chemical End Use: Used as a processingaidin theindustriaslynthesisof--- fluoropolymerswhich have a varietyofusescommerciallyand inconsumer products. Percentof totalmanufacturedor imported Volume goingtothisuse:100% Check allphysicalforms ofthe chemicalduringthisuse: Ifused ina mixturecheck appropriatbeox To indicateWeight fractionA.verage Values are acceptable: x <1% 1-30% 30-60% 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water or solvent- wet solid Gas or vapor __2L Liquid solution X Other (Explain) As dry coatingon metal implements, as molded parts,as fabricatedarticles. *<0.5% inliquidsolution,<0.0001% (1 ppm) indry coatings. CAS Number 335-67-1,3825-26-1,335-95-5 3M Company 6/8/2000 28 CAS #335-67-1 Perfluorooctanoic Acid Use Number I of I DescriptionofChemical End Use:Used asa reactivientermediatientheindustriaslynthesis of a fluoroacryliecster.This lattemraterialissubsequentlyused inan industriacloating application. Percentof totalmanufacturedor imported Volume goingto thisuse:100% Check allphysicalforms ofthe chemicalduringthisuse: Ifused in a mixturecheck appropriatbeox To indicatWeeight fractionA.verage Values areacceptable: X <1% 1-30% 30-60% 60-90% >90% Aerosol Dry Powder Pelletsor largecrystals Water orsolvent- wet solid Gas or vapor X Liquidsolution Other(Explain)