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AY!HP LaserJet IIISiHPPCL5MS,,,,,,0nLL(9 Z6Times New Roman RegularX($%2A`ArialTTWg$ UE  D^$3|xU$35;AGMSY_16161616161616161#37=CIQYag1.a.i.(1)(a)(i)1)a) GG XYZfencelineNESHAPCommentercommentercommenters MACT NDIrecoatflightlineOAQPS(;.$2  0  .3  0  (Ot$0  2  a  .3  0` (#(#(b$0  0` (#(#2   .3  0 ` (#` (#(x$0  0` (#(#0 ` (#` (#2(  0  )3  0 (# (#($0  0` (#(#0 ` (#` (#0 (# (#2(  a  )3  0h(#(#($0  0` (#(#0 ` (#` (#0 (# (#0h(#(#2(   )3  0h(#h(#(L$0  0` (#(#0 ` (#` (#0 (# (#0h(#(#0h(#h(#2  0  )3  0(#(#(A<$0  0` (#(#0 ` (#` (#0 (# (#0h(#(#0h(#h(#0(#(#2  a  )3  0p(#(#xAGaeimquy}Bullet ListBullets List e '  _AerospaceQuestion_received_ԀbyOAQPS0  0(#(#0p(#(#0p(#p(#0 (#(#0x (# (#0 x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#qyXX10/1/98#X~Xqy# (# (# AU) xdExA(3$ !    '  _  0 @ 0@` (#(#0@ ` (#` (#0@ (# (#0@h(#(#0@h(#h(#0@(#(#0@p(#(#0@p(#p(#0@ (#(# |XX7/23/98# XX|#  AU) xdE3xA )  _  *XX  1  #X~X*7#(3$ !  (9 Z6Times New Roman Regular  '  _  0 @ 0@` (#(#0@ ` (#` (#0@ (# (#0@h(#(#0@h(#h(#0@(#(#0@p(#(#0@p(#p(#0@ (#(#"|XX7/23/98#"XX|#  AU) xdE3xA(9 Z6Times New Roman Regular E '  _AerospaceQuestionsreceivebyOAQPS0  0(#(#0p(#(#0p(#p(#0 (#(#0x (# (#0 x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#$|XX7/23/98#$XX|# (# (# AU) xdExA(9 Z6Times New Roman Regular e '  _AerospaceQuestion_received_ԀbyOAQPS0  0(#(#0p(#(#0p(#p(#0 (#(#0x (# (#0 x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#0@ x(#x(#&qyXX7/23/98#&X~Xqy# (# (# AU) xdExA(9 Z6Times New Roman Regular d'dxd Level 1 Level 2 Level 3 Level 4 Level 5(2C$ !  ($ (    ) M << deUU !  _ X3XXXsXX3_%_#!DoessubpartGGapplytomaintenanceandrepairfacilities? _  #X3XsM#0   #X~XXX3.#Question:Isthisfacilityapplicabletotherule?& &XX~ ((#(#    `    0  FacilityXYZisresponsibleforthemaintenanceandrepairofcommercialaircraft.Theymaintain K  threehangarbaysontheflightlineofamajorinternationalairport. (#(# 0  Thefacilitydoesnotengageinthemanufacturerorreworkofaircraft.Fullyassembled,flightworthyaircraftarepurchasedfromanaerospacemanufacturingcompany.Whenaircraftrequiremajormodificationoroverhaul(rework),theaircraftistakentoaprivatereworkfacilitylocatedoutsidetheairportfenceline. (#(# 0  Maintenanceactivitiesperformedattheairportincludewipecleaning,sprayguncleaning,flushcleaning,inorganicandorganicpaintingandpriminganddepainting.Theamountofsolvent,paintandstripperusedatthefacilityisminimalsinceoperationsareperformedonlyonareasoftheaircraftwhereapreflightinspectionhasfoundevidenceofcorrosionorwherecorrosionwasfoundduringthe60dayaircraftmaintenancecheck.Althoughthesurfaceareatoberepairedvaries,onanaverage,a45'x45'areaoftheaircraftisrepaired.Thefacilityhas70aircraftwhichcouldundergorepairmorethanoncebeforegoingintoreworkstatus. (#(# 0  #X~X &&;#Answer:Yes,thisfacilityissubjecttoSubpartGGforthefollowingreasons:D(#(# -,XX XX-L Ay# L .   & &XX~ 0  0` (#(#.2A3  0 ` (#` (#  althoughtheEPAdidnotspecificallydefinemanufacturingandreworkfacilities,itwas { notEPA'sintenttoexemptroutinepaintingoperationsperformedinreworking(maintainingandrepairing)aerospacevehiclesorcomponents(finalruleBID,Page430)..: ݌  (# (# Ќ  0  0` (#(# ` (#` (#  .   0  0` (#(#. 2A3  0 ` (#` (#  aerospacefacilityisdefinedasanyfacilitythatproduces,reworks,orrepairsinany T amountanycommercial,civil,ormilitaryaerospacevehicleorcomponent."Rework"and"Repair"wasintendedtoincluderoutinemaintenance.. Z ݌  (# (# Ќ  Foradditionalinformation,pleasecontactIngridWard919 #X~X &&#BackgroundInformation  #! & &XX~ Whattherulesays: Final(Amended)Rule,February10,1998[Redline/StrikeOutversion] %P# NESHAPtitle: NationalEmissionStandardsforAerospaceManufacturingandReworkFacilities63.741(a)[applicability]states Thissubpartappliestofacilitiesthatareengaged,eitherinpartorinwhole, )!' inthemanufactureorreworkofcommercial,civil,ormilitaryaerospacevehiclesorcomponentsandthataremajorsourcesasdefinedin63.2.   +<$* 63.741(c)[applicability,affectedsources]. ...Theactivitiessubjecttothissubpartarelimitedtothe _ manufactureorreworkofaerospacevehiclesorcomponentsaredefinedinthissubpart...0  aerospacefacilitymeansanyfacilitythatproduces,reworks,orrepairsinanyamountany   commercial,civil,ormilitaryaerospacevehicleorcomponent (#(# 0   (#(# 0  aerospacevehicleorcomponentmeansanyfabricatedpart,processedpart,assemblyofparts,or o  completedunit,withtheexceptionofelectroniccomponents,ofanyaircraftincludingbutnotlimitedtoairplanes,helicopters,missiles,rockets,andspacevehicles. (#(# 0  Manufactureorreworkisnotdefined.p (#(#  WhattheproposedBIDsays: BIDforproposedstandard,Draft_EIS_,May1993 W  11,Summary. TheproposedrulewouldlimitorganicHAPemissionsfromthefollowingsourcesat    aerospacefacilities:cleaningoperations,primerapplicationoperations,topcoatapplicationoperations,depaintingoperations,chemicalmillingmaskantapplicationoperations,andthehandlingandstorageofwaste. WhatthefinalBIDsays: BIDforpromulgatedstandard,July1995 C   #X~X && #*XX~PleaseseetheentireBIDdocumentsformoredetails.Theinformationbelowprovidesexcerptsonly.#X~X*#& &XX~  Chapter3 `      h    4 Section3.1,ClarificationofApplicability k  Page34/35,Response:TheEPAbelievesthatamanufacturerisawareoftheultimateapplicationofthe  partsitproduces.UndertheAerospaceNESHAP,anycleaning,applicationofprimer,topcoat,orchemicalmillingmaskant,ordepaintingassociatedwithaerospacevehiclesorcomponentsmustsatisfytherequirementsofthisrule.#X~X &&#& &XX~  D 0  Page33,Comment:CommenterIVD35statedthattheywouldincursignificantcostsiftheEPA S"  subjectsnonmajoraerospaceactivitiestotheproposedrule.ThecommenterpointedoutthattheyconductoperationsthatinvolveaircraftathundredsoflocationsthroughoutthecountryandthattheiractivitiesofteninvolvesomeformofaerospaceworkthatwouldbecoveredintheNESHAP.Accordingtothecommenter,extendingtheproposedruletotheselowHAPemittingactivitieswouldbetremendouslyexpensivewithminimalbenefittotheenvironment,astheseactivitiesinvolvelowvolumesofwork. (#(# 0  Page33/34,Comment:Twocommenters(IVD27,IVD29)wereconcernedthattheuniverseof )!( activitiesandsourcessubjecttotherequirementsoftheAerospaceNESHAPisnotpreciselydefined.Thecommentersbelievethatwithoutprecisionandclarityastowhichsourcesandactivitiesare,andarenot,coveredbytherule,neitherpotentiallyaffectedfacilitiesnortheEPAitselfwillbeabletodeterminewhetherornotspecificactivitiesaresubjecttoregulation.s,%,(#(# ЇPage35,Response:TheEPA'scommentintheproposalpreamblewasnotintendedtoindicatethatthe _ Agency'sestimateoffacilitiesrepresentedallfacilitiesinvolvedinaerospacework.At59FR29217(column 7 2),itwasstatedthat,"forthepurposesoftheproposedrule,aerospaceindustriesreferstoallfacilitiesthat   manufacture...and...thatrework...aerospacevehiclesorcomponents."Thus,thecommenterappearstohavebeenconfusedbythedistinctionbetweentheportionoftheindustrythatwasanalyzedandtheregulatorycoverageoftheproposedrule.#X~X &&C#& &XX~  8 0  Page35,Comment:CommenterIVD5statedthatifthestatementiscorrectthattheproposedrule G  "referstoallfacilitiesthatmanufactureaerospacevehiclesorcomponentsandallfacilitiesthatrework(includingrepair)theseaerospacevehiclesorcomponents,"theproposedruleisseriouslyflawedinthatthenumberoffacilitiesisgrosslyunderestimated.ThecommenteralsoclaimedthattheEPAdoesnothaveaccurateinformationonthenumberofaerospacefacilitiesifitintendstoincludetheentireaerospaceindustry. (#(# Page36,Response:Sincethischangeclarifiestheintentoftherule,thefinalrulehasbeenrevisedto /  incorporatethesubstanceofthisnewlanguage.#X~X && #& &XX~   0  Page36,Comment:Threecommenters(IVD27,IVD29,IVD35)recommendedsimilar X alternativedefinitionsof"affectedsource,"oneofwhichreadsasfollows: (#(# 0  0` (#(#"AffectedSources.Theaffectedsourcestowhichtheprovisionsofthissubpartapplyare ? specifiedin63.741(c)(1)through(6).Theactivitiessubjecttothissubpartarelimitedto  themanufactureorreworkofaerospacevehiclesorcomponentsasdefinedinthissubpart.Section63.741(c)(1)through(6)arenotapplicabletononaerospaceactivities."h` (#` (# Page37,Response:Asmentionedabove,theapplicabilityofthefinalruleisnotstructuredintermsofSIC w codes,butintermsofspecificHAPemittingactivitiesperformedinmanufacturingaerospacevehiclesandcomponents.  #X~X &&o$#& &XX~Ԁ `   0  Page37,Comment:CommenterIVD28believesthattheextensionoftheaerospaceMACT x standardtooperationsoutsidetheSICcodesforaerospaceindustrieswillresultintheimpositionofinappropriaterequirementsontoobroadasegmentofthemanufacturingsector.Thecommenterpointedoutthatthisisparticularlytrueforfacilitiesinvolvedinthemanufacture,rework,reconditioning,orrepairofaircrafttransparencies. (#(# #X~X &&(#& &XX~Chapter4 %`$ Section4.32.6,MaintenancePainting#X~X &&=+#& &XX~ &8%  Page430,Response:ItwasnottheEPA'sintentinthesestandardstoexemptroutinepainting G( ' operationsperformedinreworking(maintainingandrepairing)aerospacevehiclesorcomponents.Therefore,thisdefinitionhasnotbeenaddedtothefinalrule.#X~X &&+#& &XX~  )")      _  0  Page429/430,Comment:CommenterIVD35recommendedthatthefollowingdefinitionfor +H$+ "maintenancepainting"beaddedtotherule: (#(# 0  0` (#(#" Maintenancepainting meanspaintingoperationsafternondestructiveinspection(NDI),   corrosionrework,compositereplacement,metalpanelreplacement,aerospacevehiclemodification,panelaccess,orothermaintenanceactivitiestoinsureaircraftstructuralintegrity." ` (#` (# 0  Thecommenterproposedthattheabovedefinitionisnecessarysincemaintenancepaintingshouldbeexemptfromtherule. (#(# Chapter6 L  Section6.9,TouchupandRepairApplicationOperations#X~X &&C-#& &XX~Page634/635,Response:TheEPAbelievesthatthecommenters'recommendationswithrespectto 3  "maintenancepainting"aretoobroadlydefinedandwouldencompassmanyoftheactivitiestheEPAintendstoregulate...Therefore,theEPAwillnotaddtherecommendeddefinitiontotheruleorexemptmaintenancepaintingfromtherule...TheEPAhasrevisedthedefinitionasfollows:8  0`      ` " Touchupandrepairoperation meansthatportionofthecoatingoperationthat k  istheincidentalapplicationofcoatingusedtocoverminorimperfectionsinthecoatingfinishortoachievecompletecoverage.Thisdefinitionincludesoutofsequencecoating." ` `  0  0` (#(#TheEPAhasadded outofsequence coatingtothedefinitiontoallowfacilitiestouseany H typeofapplicationmethodforthistypeofoperation.Thisadditiondoesnot,however,allowthefacilitytofreelyusethetouchupandrepairoperationexemptiontorecoatanentireaircraftontheflightlinewithoutusingcontrols.Theexemptionwasincorporatedintheruletoallowfacilitiestoapplycoatingtosmallareas(4ft2intheproposal)oftheaircraft   withoutbeingconstrainedtoaparticulartypeofapplicationmethod.TheEPAunderstandsthat4ft2isnotadequateforsomeofthelargeraircraftandwillallowthepermitting  \ authoritytodeterminewhatconstitutesatouchupandrepairoperation." ` (#` (# #X~X &&0#& &XX~   `      h      p      x 0  #X~X &&7#& &XX~Page630/631/632,Comment:CommenterIVD35statedthatoverhaulandrepairoperationsare $" called"maintenancepainting"andareinappropriatelygiventhesameMACTstandardsasfullaircraftprimerandtopcoatapplications.Thecommenterstatedthatmaintenancepaintingmeanspaintingoperationsafternondestructiveinspection(NDI),corrosionrework,compositereplacement,metalpanelreplacement,aircraftmodification,panelaccess,orothermaintenanceactivitiestoinsureaircraftstructuralintegrity.Thecommenterpointedoutthattheproposedruledoesnotrecognizeordistinguishthistypeofpainting. (#(# 0  Thecommentersuggestedthatmaintenancepaintingisanimportantmaintenancetoolforensuringbothairworthinessandoperationalreadinessofaerospacevehicles.CommenterIVD37pointedout +T$+ thatAirworthinessDirectives("AD's")issuedbytheFederalAviationAdministrationmaymandate,forpurposesofaviationsafety,thataircraftcomponentsorsystemsbeinspected,replaced,orrepairedonatimecriticalbasis...ThecommenterconcurredwithAIA'srecommendationthatanexclusionforpermissiblemaintenancepaintinglimitedto10percentoftheexteriorsurfaceofanaerospacevehicleperyearwouldconstituteareasonableandadequatecontrolmechanism. (#(# 0  ...SincemaintenancepaintingoperationswerenotanalyzedduringthedevelopmentoftheproposedNESHAP,thereisnobasisforestablishingaMACTfloor,otherthannocontrol. (#(# 0  Thecommenterstatedthattouchupandrepairpaintingsupportsaircraftaestheticrepairsandcoatingsystemlongevityontheoutermoldlineoftheaircraft,whilemaintenancepaintingsupportsaircraftstructuralintegrityduringaircraftoverhaulandrepairoperations. (#(# 0  AccordingtocommenterIVD35,touchupandrepairpaintingcanpotentiallybeaccomplishedinapainthangarorboothwithemissioncontrols(theaircraftismobile);however,mostlocationswhereaircraftarestationeddonothaveapainthanger(80percentestimateforDoD),andtouchupandrepairpaintingistypically"outofcycle"ornonscheduledpainting.Thecommenterclaimedthatbecauseemissioncontrolledhangarshavelowavailability(fullyscheduled),itisdifficulttoscheduleoutofcycletouchupandrepairoperations.Therefore,thecommenterpointedoutthattouchupandrepairisusuallyaccomplishedinfacilitieswithoutemissioncontrols. (#(# #X~X &&{8#   `      h