WPCKg ل|W/rnLQg: CBuUNu8!Vh*-@fjYKȔ8`9zJ&UY  uOP~?L7gbp*~Pnη6h@h9x[¢xhw+ؘ͂<[t;ӻv3D0Ƴ]p\+pSj-ʩ(ԓ\g5c5O#Sl ȍ偓WtctvašY x?HUr1 XJ95A"txSjb ?FhfEO&s.K㏃a> &f_z10%[S|9&60^ \WZ1un/+y¿*)[ ˮ/-.y.V$ sPY?@V'# "s- % 0(UFN 1 1mw@`4 0D 0vk}loTfl)lflgll?llljlYjl/l 0N{oflWyo< B0* r 0cG! B!}!nD"l"n#o#l# 0cg$k$l5%%l?&}&k('s's(zy(l*l_+ 0D+l,{{,~,~t-}-oo..r`/s/oE0o0 06#1l1s`2o2lB33J4 0d4mA5s5o!66o-7|7 08s8r19m9r:s:l: 0j`a; 0T;<m<t-=s=j> 0c~>>kk?k?rA@8@s@x^AAsWBsBr=CsCp"DsDvE 0A{E 0,TEqFsFsFvgGtGfQHaSH gHfmHsoHHmsIvIpVJvJt$"Small Circle"0  (T$0  0` (#(#0 ` (#` (#0 (# (# (hJ$0  0` (#(#0 ` (#` (#0 (# (#0h(#(#  st\TABLE ATABLE ATable_A\TABLE A  Vf$Ӏ  6    ݀Ananodeisapositiveelectrode.Itisthepointofexitofelectronsfromadevicetothe  externalcircuit.TABLE BTABLE C\TABLE ATABLE B\TABLE B\\]h m  Vf$Ӏ  31    ݀40CFR63.343(a)(3)and(4).TABLE L\1TABLE A  Vf$Ӏ  113    ݀AftertheStatereceivesdelegationofthe112programs,thesourceneedonlysubmit  reportstotheStateandnolongertoU.S.EPA. w  Vf$Ӏ  118    ݀RegulationNo.3,PartBIII.A.5.TABLE BTABLE BTABLE C\TABLE ATABLE BTABLE BTABLE C\TABLE ATABLE BTABLE BTABLE CTABLE DTABLE GTABLE G\TABLE E\TABLE ETABLE FTABLE HTABLE HTABLE GTABLE GTABLE I(@ Z 6Times New Roman RegularTABLE ITABLE GTABLE GTABLE JTABLE JTABLE KI  HIz}:}?}}?}}@}}@}@} @}}Q?}?}}@}}}}}Q?}?}}@}}}}}{Gz?}?}}@}}}}}{Gz?}?}}@}}}}}}?}}@}}}}}{Gz?}?}}@}}}TABLE A}@TABLE C? ?@TABLE G?@ !  ݛC 'UGNc/ B Cd  ( $$` 2Ӝ  @" TableofContents   sVm  sVmF0     1.10##InspectorRequirements ###K#. "###3sVmFb݌ d Ќ  sVm  sVm)0     1.20##IntroductiontotheRegulationsConcerningChromiumElectroplatingandAnodizing D Tanks #(#(#J#.###26sVm)E݌ 4 Ќ  sVm  sVma0     1.30##ChromiumElectroplatinginGeneral #(#(#J#.@@.###27sVma}݌   Ќ  t!  t!Q0  04##    1.3.1044#4#SomeBasicsonChromiumElectroplating#(#(#J#.ff74#4##27t!Ql݌   Ќ  t!  t!T0  04##    1.3.2044#4#TypesofChromiumElectroplatingSources#(#(#J#.94#4##27t!To݌  p  Ќ    Y0  04##0 4#4# 4   0 # #1.3.2.10 # #ChromiumAnodizingorChromicAcidAnodizing#(#(#J#.G # ##27Yt݌  `  Ќ    0  04##0 4#4# 4   0 # #1.3.2.20 # #DecorativeChromiumElectroplating#(#(#J#.= # ##28݌  P  Ќ    0  04##0 4#4# 4   0 # #1.3.2.30 # #HardChromiumElectroplating#(#(#J#.7 # ##29݌ @  Ќ     0  04##0 4#4# 4   0 # #1.3.2.40 # #OtherTanks#(#(#J#.& # ##31 ݌ 0  Ќ     0  04##0 4#4# 4   0 # #1.3.2.50 # #ExemptTanks#(#(#J#.ll' # ##31  ݌   Ќ  sVm  sVm 0     1.40##CategoriesofSources #(#(#J#. !###32sVm  ݌  Ќ  t!  t! 0  04##    1.4.1044#4#New,Reconstructed,andExistingSources#(#(#J#.94#4##32t! ݌ t Ќ     0  04##0 4#4# 4   0 # #1.4.1.10 # #NewSources#(#(#J#.& # ##32 ݌ d Ќ    0  04##0 4#4# 4   0 # #1.4.1.20 # #ReconstructedSources#(#(#J#.0 # ##32݌ T Ќ    0  04##0 4#4# 4   0 # #1.4.1.30 # #ExistingSource#(#(#J#.* # ##33.݌ D Ќ  t!  t!)0  04##    1.4.2044#4#SizeofSources#(#(#J#.  4#4##33t!)D݌ 4 Ќ    0  04##0 4#4# 4   0 # #1.4.2.10 # #MajorSource#(#(#J#.((' # ##330݌ $ Ќ    (0  04##0 4#4# 4   0 # #1.4.2.20 # #AreaSource#(#(#J#.& # ##34(C݌  Ќ  sVm  sVm:0     1.50##AirPollutionControlTechniques #(#(#J#.  ,###35sVm:V݌ p Ќ  t!  t!(0  04##    1.5.1044#4#AddonAirPollutionControlDevices#(#(#J#...54#4##35t!(C݌ ` Ќ    )0  04##0 4#4# 4   0 # #1.5.1.10 # #CompositeMeshPadSystem( CMP)#(#(#J#.""< # ##36)D݌ P Ќ    W0  04##0 4#4# 4   0 # #1.5.1.20 # #FiberBedMistEliminator( FBME)#(#(#J#.= # ##36Wr݌ @ Ќ    0  04##0 4#4# 4   0 # #1.5.1.30 # #PackedBedScrubber( PBS)#(#(#J#.ff6 # ##37݌ 0 Ќ    0  04##0 4#4# 4   0 # #1.5.1.40 # #PackedBedScrubberandCompositeMeshPadSystem( PBS/CMP)   #(#(#J#.  # ##37݌̌  t!  t!0  04##    1.5.2044#4#ChemicalFumeSuppressant#(#(#J#.$$*4#4##37t!݌ !  Ќ    0  04##0 4#4# 4   0 # #1.5.2.10 # #FoamBlanket#(#(#J#.LL' # ##38 ݌ t"! Ќ    0  04##0 4#4# 4   0 # #1.5.2.20 # #WettingAgent#(#(#J#.( # ##38݌ d#" Ќ  t!  t!0  04##    1.5.3044#4#AddonAirPollutionControlDeviceandChemicalFumeSuppressant#(#(#J#.TTR4#4##39t!2݌ T$ # Ќ  sVm  sVm50     1.60##RequirementsforMajorandAreaSources #(#(#J#.""3###39sVm5Q݌ 4&"% Ќ  t!  t!* 0  04##    1.6.1044#4#OperatingPermit#(#(#J#. !4#4##39t!* E ݌ $'#& Ќ  t!  t!!0  04##    1.6.2044#4#EmissionLimitsandComplianceDates#(#(#J#.54#4##39t!!2!݌ ($' Ќ    "0  04##0 4#4# 4   0 # #1.6.2.10 # #EmissionLimits#(#(#J#.  * # ##39"3"݌ )%( Ќ    .#0  04##0 4#4# 4   0 # #1.6.2.20 # #ComplianceDates#(#(#J#.+ # ##41.#I#݌ )p&) Ќ  t!  t!E$0  04##    1.6.3044#4#OperationandMaintenanceorWorkPracticeStandards#(#(#J#.E4#4##42t!E$`$݌ *`'* Ќ  t!  t!V%0  04##    1.6.4044#4#InitialPerformanceTesting#(#(#J#.,4#4##44t!V%q%݌ +P(+ Ќ    N&0  04##0 4#4# 4   0 # #1.6.4.10 # #TestMethods#(#(#J#.**' # ##45N&i&݌  Ќ    a'0  04##0 4#4# 4   0 # #1.6.4.20 # #SiteSpecificTestPlanandTestReport#(#(#J#.**B # ##45a'|'݌ t Ќ    (0  04##0 4#4# 4   0 # #1.6.4.30 # #MonitoringRequirements#(#(#J#.2 # ##46((݌ d Ќ    )0  04##0 4#4# 4   0 # #1.6.4.40 # #TimeRequirementforInitialPerformanceTest#(#(#J#.H # ##46))݌ T Ќ    *0  04##0 4#4# 4   0 # #1.6.4.50 # #ApplicabilityofPreviousTestResults#(#(#J#.A # ##47**݌ D Ќ  t!  t!,0  04##    1.6.5044#4#OngoingComplianceMonitoring#(#(#J#..4#4##48t!,),݌ 4 Ќ  t!  t!-0  04##    1.6.6044#4#Recordkeeping#(#(#J#. 4#4##51t!-#-݌ $  Ќ    -0  04##0 4#4# 4   0 # #1.6.6.10 # #InspectionandMaintenanceRecords#(#(#J#.nn= # ##52- .݌   Ќ    /0  04##0 4#4# 4   0 # #1.6.6.20 # #MalfunctionRecords#(#(#J#.. # ##52/6/݌   Ќ    500  04##0 4#4# 4   0 # #1.6.6.30 # #PerformanceTestResults#(#(#J#.3 # ##5250P0݌  p  Ќ    T10  04##0 4#4# 4   0 # #1.6.6.40 # #MonitoringDataRecords#(#(#J#.2 # ##53T1o1݌  `  Ќ    r20  04##0 4#4# 4   0 # #1.6.6.50 # #ExcessEmissionsRecords#(#(#J#.883 # ##53r22݌  P  Ќ    30  04##0 4#4# 4   0 # #1.6.6.60 # #ProcessRecords#(#(#J#.* # ##5433݌ @  Ќ    40  04##0 4#4# 4   0 # #1.6.6.70 # #MiscellaneousRecords#(#(#J#.&&0 # ##5444݌ 0  Ќ  t!  t!50  04##    1.6.7044#4#Reporting#(#(#J#.T T 4#4##54t!55݌   Ќ    60  04##0 4#4# 4   0 # #1.6.7.10 # #NotificationofConstructionorReconstruction#(#(#J#.I # ##5566݌  Ќ    70  04##0 4#4# 4   0 # #1.6.7.20 # #InitialNotification#(#(#J#./ # ##5677݌  Ќ    80  04##0 4#4# 4   0 # #1.6.7.30 # #NotificationofInitialPerformanceTest,InitialPerformanceTest t Results,andNotificationofComplianceStatus#(#(#J#.I # ##5689݌ d Ќ    :0  04##0 4#4# 4   0 # #1.6.7.40 # #OngoingComplianceStatusReports#(#(#J#.TT< # ##58::݌ T Ќ    ;0  04##0 4#4# 4   0 # #1.6.7.50 # #TrivalentChromiumBathReports#(#(#J#.: # ##59;;݌ D Ќ  sVm  sVm<0     1.70##PollutionPreventionMeasures #(#(#J#.$$)###59sVm<<݌ $ Ќ  sVm  sVm=0     1.80##GlossaryofTerms #(#(#J#.  ###60sVm==݌  Ќ    p   *,X<XX* '   '>21.  1  3  0    InspectorRequirements >'>'?݌## Ќ    ThefollowingisasynopsisofwhatanInspectormustdoatachromiumelectroplatingorchromiumanodizingfacilityduringaninspection.ThissynopsisisonlytoprovideanoverviewandanInspectorshouldobtainacopyoftheinspectionchecklistslocatedbeforethisSection1.1ofthisChapterdevelopedspecificallyforhardchromiumelectroplating,decorativechromiumelectroplating,andchromiumanodizingsources(tanks).Table1.1isasummaryoftherequirementsforeachtypeofchromiumelectroplatingorchromiumanodizingfacility. m7   m7+B21.  1  .  1  3  0    ݜDeterminethetypeofthefacility(seeTable1.2)m7+BVB݌ p ## Ќ   U#   U#>C0  21.  1  .  1  .  1  3  0##  ݜHardchromiumelectroplatingfacilityU#>CiC݌ ` ## Ќ   U#   U#qD0  21.  1  .  1  .  2  3  0##  ݜDecorativechromiumelectroplatingfacilityU#qDD݌ P ## Ќ   U#   U#E0  21.  1  .  1  .  3  3  0##  ݜChromiumanodizingfacilityU#EE݌@ ## Ќ   U#   U#F0  21.  1  .  1  .  4  3  0##  ExemptfacilityortankU#FF݌0 ## Ќ   G   GG0  0##21.  1  .  1  .  4  .  1  3  0N ##  ResearchorlaboratoryfacilityortankGGH݌ N #N # Ќ   G   GRI0  0##21.  1  .  1  .  4  .  2  3  0N ##  TankswithchromiumsolutionbutwherenoelectrolicprocessoccursGRI}I݌N #N # Ќ   G   GJ0  0##21.  1  .  1  .  4  .  3  3  0N ##  Tanksassociatedwithchromiumelectroplatingprocess,butwhereno  chromiumelectroplatingorchromiumanodizingoccursGJJ݌ N #N # Ќ  XXXXX m7   m7L21.  1  .  2  3  0    Determinewhetherthesourceisexisting,new,orreconstructedm7LL݌T## Ќ   U#   U#M0  21.  1  .  2  .  1  3  0##  Existingsourceifinitialstartupdatewasbefore12/16/93.U#MM݌D## Ќ   U#   U# O0  21.  1  .  2  .  2  3  0##  Neworreconstructedifinitialstartupdateisonorafter12/16/93.U# O6O݌4## Ќ  #XXXXXXӅL# m7   m7~P21.  1  .  3  3  0    Determinethesizeofthefacilitym7~PP݌## Ќ   U#   U#Q0  21.  1  .  3  .  1  3  0##  Hardchromiumfacility:largeorsmalldependinguponrectifiercapacityandmajoror  areasourcedependinguponthepotentialtoemithazardousairpollutantsU#QQ݌ ## Ќ   U#   U#8S0  21.  1  .  3  .  2  3  0##  Decorativechromiumfacility:majororareasourcedependinguponthepotentialto ` emithazardousairpollutantsU#8ScS݌ ## Ќ   U#   U#T0  21.  1  .  3  .  3  3  0##  Chromiumanodizingfacility:majororareasourcedependinguponthepotentialto @ emithazardousairpollutantsU#T"U݌ ## Ќ   U#   U#V0  21.  1  .  3  .  4  3  0##  IfitisanareasourceseealsoSection1.1.12ofthisChapter1.0U#TT݌ ## Ќ  XXXXXX m7   m7W21.  1  .  4  3  0    Determinethetypeofairpollutioncontroldeviceusedm7WW݌ ## Ќ   U#   U#X0  21.  1  .  4  .  1  3  0##  AddonairpollutioncontroldeviceU#XY݌! ## Ќ   G   GZ0  0##21.  1  .  4  .  1  .  1  3  0N ##  Compositemeshpadsystem(seeFigure1.1)GZ.Z݌t"!N #N # Ќ   G   Gd[0  0##21.  1  .  4  .  1  .  2  3  0N ##  Fiberbedmisteliminator#XXXXXXӞW#XXXXXXԛ(seeFigure1.2)#XXXXXXӓ\#XXXXXXGd[[݌d#"N #N # Ќ   G   GI]0  0##21.  1  .  4  .  1  .  3  3  0N ##  Packedbedscrubber#XXXXXX\#XXXXXXԛ(seeFigures1.3,1.4,and1.5)#XXXXXXr^#XXXXXXGI]t]݌T$ #N #N # Ќ   U#   U#7_0  21.  1  .  4  .  2  3  0##  ChemicalfumesuppressantormistsuppressantcontroldeviceU#7_b_݌D%!$## Ќ   G   G`0  0##21.  1  .  4  .  2  .  1  3  0N ##  FoamblanketG``݌4&"%N #N # Ќ   G   Ga0  0##21.  1  .  4  .  2  .  2  3  0N ##  WettingagentGaa݌$'#&N #N #    ($' & `   m7   m77c21.  1  .  5  3  0    Determinetheemissionlimitforthesourcedependinguponthenumberoftanksaffected,type  offacility,sizeofthefacilityandthetypeofairpollutioncontroldeviceused#XXXXXX^#XXXXXXԀ(seeTables1.3 t and1.4)#XXXXXXd#XXXXXXm77cbc݌d## Ќ   U#   U#e0  21.  1  .  5  .  1  3  0##  SingletankU#ee݌T## Ќ   G   Gf0  0##21.  1  .  5  .  1  .  1  3  0N ##  Hardchromium:large(0.015mg/dscm)orsmall(0.015or0.030mg/dscm)Gff݌DN #N # Ќ   G   G.h0  0##21.  1  .  5  .  1  .  2  3  0N ##  Decorativechromium:hexavalentsolution(0.01mg/dscmorsurface 4 tension),trivalentsolution(0.01mg/dscmorsurfacetension)#XXXXXX:e#XXXXXX,trivalent $  solutionwithwettingagentasingredientofbath(nostandard)G.hYh݌ N #N # Ќ   G   Gj0  0##21.  1  .  5  .  1  .  3  3  0N ##  Chromiumanodizing:0.01mg/dscmorsurfacetensionGjj݌ N #N # Ќ  '` !c U#   U#l0  21.  1  .  5  .  2  3  0##  MultipletanksU#lCl݌ ` ## Ќ   G   G0m0  0##21.  1  .  5  .  2  .  1  3  0N ##  Hardchromium:seeTable1.4G0m[m݌ P N #N # Ќ   G   Gn0  0##21.  1  .  5  .  2  .  2  3  0N ##  Decorativechromium:seeTable1.4Gnn݌@ N #N # Ќ   G   Go0  0##21.  1  .  5  .  2  .  3  3  0N ##  Chromiumanodizing:seeTable1.4Gop݌0 N #N # Ќ   m7   m75q21.  1  .  6  3  0    Determinewhetherthesourcemettherequiredemissionlimitbythecompliancedate(see  Table1.5)m75q`q݌ ## Ќ   U#   U#r0  21.  1  .  6  .  1  3  0##  Hardchromiumelectroplating:1/25/95,1/25/97,orimmediatelyU#rr݌t## Ќ   U#   U#s0  21.  1  .  6  .  2  3  0##  Chromiumanodizing:1/25/95,1/25/96,orimmediatelyU#ss݌d## Ќ   U#   U#u0  21.  1  .  6  .  3  3  0##  Decorativechromiumelectroplating:1/25/95,1/25/97,orimmediatelyU#u4) @ ?B ?B % >Existing,New,orReconstructedExistingNeworReconstructed '   'n/an/a#XXX |v# |XXXn/a#XXX |# |XXX '  " '#XXX |I# |XXXn/an/an/a#XXX |# |XXX '  %" 'n/an/an/a 0%  +" 0Ѐtotalchromiumingasstream#XXX |# |XXXnotexceed: l - #XXX |# |XXX0.015mg/dscm 4 . 0.03mg/dscm0.015mg/dscm 9%*  1"% 9DecorativeChromium 4*, 3% 4Existing,New,orReconstructed#XXX |)# |XXX#XXX |H# |XXXExisting,New,orReconstructed '`; 'HexavalentTrivalent#XXX |# |XXX '`C" 'NoYesNoYesn/a#XXX |2# |XXX 'TR" 'n/an/aNoNoYes 0%Ta" 0Ѐtotalchromiumingasstream#XXX |# |XXXnotexceed:#XXX |# |XXX0.01mg/dscm , c notallowthesurfacetensionoftheelectroplatingbathtoexceed45dynes/cm̀totalchromiumingasstream#XXX |# |XXXnotexceed:#XXX |# |XXX0.01mg/dscm (j notallowthesurfacetensionoftheelectroplatingbathtoexceed45dynes/cm#XXX |# |XXX Hn NoStandard ;%%*Tp"% ;ChromiumAnodizing ;%*xr%% ;Existing,New,orReconstructed ;%*4s% ;n/a ;%*4t"% ;NoYes#XXX |# |XXX ;%*x"% ;n/an/a =%%*|"% =Ѐtotalchromiumingasstream#XXX |3# |XXXnotexceed:#XXX |# |XXX0.01mg/dscm x~ notallowthesurfacetensionoftheelectroplatingbathtoexceed45dynes/cm/%#"  %% /:epX,F X:#XXX |b# |XXX7,4XepX7    #XXX |}#@  2 Table1.4  @ EmissionLimitsForChromiumElectroplatingTanksMultipleSources/Tanks  |XXX*dddd P dd dd dd dd ` dd (//,0 ,td",td",td",td",0t"+  1%%%% , h1GroupofTankswithAnyOneTankOperating >%%-"%%%% >CommonAddonAirPollutionControlDevice ;%(%*d"%% ;EachTankPerformsSameTypeofOperation ;%(%*d "%(% ;EachTankisSubjecttotheSameEmissionLimits ;%(%*d"%(% ;ControlDeviceControlsNonaffectedTanks =%(%%*d"%(% =RequiredEmissionLimits J%%7*" 0 h %(%% JTYPEI: % `%% % *( ` * *( `( * *( `( * .(% `( . A%%. ` (% AHardChromium0 e Large:Existing,New,&Reconstructed e e  0 e Small: e e  0 e 0De e Existing D D  0 e 0De e New&Reconstructed /%  D D %% /YesYesYes *( % *YesYesYes *( +( *YesYesYes *( 1( * No   @ 4  No T 6 No .(% 7( .0.015mg/dscm0.030mg/dscm0.015mg/dscm C%%0! =  (% @xCDecorativeChromium %\ >%% %Yes '(\ ? 'Yes '(\ @( 'Yes 0(!\ A( 0No 4(%!\ B"( 4SeeTable1.3 C%%0!\ C x @ (% @xCChromiumAnodizing %D%% %Yes '(E 'Yes '(F( 'Yes 0(!G( 0No 4(%!H"( 4SeeTable1.3 L(%%9!I x @ (% LTYPEII: ((hJ(%% ( 0((!hK( 0 0((!hL(( 0 0((!hM(( 0 4((%!hN(( 4 L%%9*hO"  ((% @xLLargeorSmallHardChromium %,P%% %Yes 0(!,Q 0Yes 0(!,R( 0Yes 0(!,S( 0Yes 4(%!,T( 4SeeNoteA L%%9*,U" x @ (% @xLDecorativeChromium %lV%% %Yes 0(!lW 0Yes 0(!lX( 0Yes 0(!lY( 0Yes 4(%!lZ( 4SeeNoteA L%%9*l[" x @ (% @xLChromiumAnodizing %(\%% %Yes 0(!(] 0Yes 0(!(^( 0Yes 0(!(_( 0Yes 4(%!(`( 4SeeNoteA U(%%B*(a" x @ (% UTYPEIII: ((xb(%% ( 0((!xc( 0 0((!xd(( 0 0((!xe(( 0 4((%!xf(( 4 U%%B*xg"  ((% @xULargeorSmallHardChromium %<h%% %Yes 0(!<i 0No 9(*<j"( 9Yes 0(!<k( 0YesorNo 4(%!<l( 4SeeNoteB U%%B*<m" x @ (% @xUDecorativeChromium %|n%% %Yes 0(!|o 0No 9(*|p"( 9Yes 0(!|q( 0YesorNo 4(%!|r( 4SeeNoteB L%%9*|s" x @ (% @xLChromiumAnodizing %8t%% %Yes 0(!8u 0No 9(*8v"( 9Yes 0(!8w( 0YesorNo 4(%!8x( 4SeeNoteB U(%%B*8y" x @ (% UTYPEIV: (( z(%% ( 0((! {( 0 0((! |(( 0 0((! }(( 0 4((%! ~(( 4 U%%B* "  ((% @xULargeorSmallHardChromium %L%% %Yes 0(!L 0Yes 0(!L( 0No 9(*L"( 9YesorNo 4(%!L( 4SeeNoteC U%%B*L" x @ (% @xUDecorativeChromium %%% %Yes 0(! 0Yes 0(!( 0No 9(*"( 9YesorNo 4(%!( 4SeeNoteC Q%%%>*" x @ (% pxQChromiumAnodizing ,% H%%% ,Yes 2(%! H% 2Yes 2(%! H(% 2No ;(%* H"(% ;YesorNo 4(%%! H(% 4SeeNoteC:0. H" x0 p  (%% :7epX,4X7NoteA:Specialcomplianceprovisionsformultiplesources,performingthesametypeofoperation,controlledbyacommonaddonairpollutioncontroldevice:(i)0  Calculatethecrosssectionalareaofeachinletduct,includingthosenotaffectedbythestandard.// (ii)0  Determinethetotalsampletimepertestrunbydividingthetotalinletareafromalltanksconnectedtothecontrolsystembythetotalinletareaforallducts   associatedwithaffectedsource,thenmultiplythisnumberbytwo(2)hours;thiscalculatedtimeistheminimumsampletimerequiredpertestrun. // (iii)0  PerformMethod306testingandcalculateanoutletmassemissionrate.x// (iv)0  Determinethetotalventilationratefromtheaffectedsourcesbyusingequation1:  // @ss!(1)VRtotXIDAi/(sum)IAtotal=VRinlet    0  whereVRtotistheaveragetotalventilationrateindscm/minforthethreetestrunsasdeterminedattheoutletbymassoftheMethod306testing;IDAi,aisthetotalinlet  (  ductareaforallductsconveyingchromicacidfromeachtypeofaffectedsourceperformingthesameoperation,oreachtypeofaffectedsourcesubjecttothesameemissionlimitation;IAtotalisthesumofallnonaffectedsources;andVRinlet,isthetotalventilationratefromallinletductsassociatedwithaffectedsources.< // (v)0  Establishtheallowablemassemissionrateofthesystem(AMRsys)inmilligramsoftotalchromiumperhour(mg/hr)usingequation2:H // @(2)(sum)VRinletXELX60minutes/hours=AMRsys \ 0  where(sum)VRinlet,isthetotalventilationrateindscm/minfromtheaffectedsources,andEListheapplicableemissionlimitationfrom40CFR63.342inmg/dscm. h Theallowablemassemissionrate(AMRsys)calculatedfromequation2shouldbeequaltoorlessthantheoutletthreerunaveragemassemissionratedeterminedfrom 0 Method306testinginorderforthesourcetobeincompliancewiththestandard. //     NoteB:Specialcomplianceprovisionsformultiplesourcescontrolledbyacommonaddonairpollutioncontroldevice(thatmayormaynotalsobecontrollingemissionsfromsourcesnotaffectedbythesestandards),andperformingdifferenttypesofoperations(i.e.,hardchromiumelectroplating,decorativechromiumelectroplating,orchromiumanodizing):(i)0  Calculatethecrosssectionalareaofeachinletduct,includingthosenotaffectedbythestandard. // (ii)0  Determinethetotalsampletimepertestrunbydividingthetotalinletareafromalltanksconnectedtothecontrolsystembythetotalinletareaforallducts 4 associatedwithaffectedsource,thenmultiplythisnumberby2hours;thiscalculatedtimeistheminimumsampletimerequiredpertestrun. // (iii)0  PerformMethod306testingandcalculateanoutletmassemissionrate.  // (iv)0  Determinethetotalventilationrateforeachtypeofaffectedsourceusingequation3:(3)VRtotXIDAi,a/(sum)IAtotal=VRinlet,a  // 0  whereVRtotistheaveragetotalventilationrateindscm/minforthethreetestrunsasdeterminedattheoutletbymeansoftheMethod306testing;IDAi,aisthetotal  (  inletductareaforallductsconveyingchromicacidfromeachtypeofaffectedsourceperformingthesameoperation,oreachtypeofaffectedsourcesubjecttothesameemissionlimitation;IAtotalisthesumofallductareasfrombothaffectedandnonaffectedsources;andVRinlet,a,isthetotalventilationratefromallinletducts <  conveyingchromicacidfromeachtypeofaffectedsourceperformingthesameoperation,oreachtypeofaffectedsourcesubjecttothesameemissionlimitation. // (v)0  Establishtheallowablemassemissionrateinmg/hrforeachtypeofaffectedsourcethatiscontrolledbytheaddonairpollutioncontroldeviceusingequation  4,5,6,or7asappropriate: // @SS(4)VRhc1XELhclX60minutes/hour=AMRhc1 $ @HH(5)VRhc2XELhc2X60minutes/hour=AMRhc2 h @!(6)VRdcXELdcX60minutes/hour=AMRdc 0 @!(7)VRcaXELcaX60minutes/hour=AMRca | 0  where hcappliestothetotalofventilationratesforallhardchromiumelectroplatingtankssubjecttothesameemissionlimitation, dcappliestothetotalofventilationratesforthedecorativechromiumelectroplatingtanks, caappliestothetotalofventilationratesforthechromiumanodizingtanks,andEListheapplicableemissionlimitationfrom40CFR63.342inmg/dscm.Therearetwoequationsforhardchromiumelectroplatingtanksbecausedifferentemissionlimitationsmayapply(e.g.,anewtankversusanexisting,smalltank). // (vi)0  Establishtheallowablemassemissionrate(AMR)inmg/hrforthesystemusingtheequation8,includingeachtypeofaffectedsourceasappropriate:p// @"(8)AMRhc1+AMRhc2+AMRdc+AMRca=AMRsys   0  Theallowablemassemissionratecalculatedfromequation8shouldbeequaltoorlessthantheoutletthreerunaveragemassemissionratedeterminedfromMethod306testinginorderforthesourcetobeincompliancewiththestandards. //   l % NoteC:Specialcomplianceprovisionsformultiplesourcescontrolledbyacommonaddonairpollutioncontroldevice,andperformingsametypeofoperation(thatmayormaynotalsobecontrollingemissionsfromsourcesnotaffectedbythesestandards),butaresubjecttodifferentemissionlimitations(i.e.,becauseoneisanewhardchromiumplatingtankandoneisanexistingtank):(i)0  Calculatethecrosssectionalareaofeachinletduct,includingthosenotaffectedbythestandard. // (ii)0  Determinethetotalsampletimepertestrunbydividingthetotalinletareafromalltanksconnectedtothecontrolsystembythetotalinletareaforallducts 4 associatedwithaffectedsource,thenmultiplythisnumberby2hours;thiscalculatedtimeistheminimumsampletimerequiredpertestrun. // (iii)0  PerformMethod306testingandcalculateanoutletmassemissionrate.  // (iv)0  Determinethetotalventilationrateforeachtypeofaffectedsourceusingequation3:  // @OO (3)VRtotXIDAi,a/(sum)IAtotal=VRinlet,a  (  0  whereVRtotistheaveragetotalventilationrateindscm/minforthethreetestrunsasdeterminedattheoutletbymeansoftheMethod306testing;IDAi,aisthetotal <  inletductareaforallductsconveyingchromicacidfromeachtypeofaffectedsourceperformingthesameoperation,oreachtypeofaffectedsourcesubjecttothesameemissionlimitation;IAtotalisthesumofallductareasfrombothaffectedandnonaffectedsources;andVRinlet,a,isthetotalventilationratefromallinletducts H  conveyingchromicacidfromeachtypeofaffectedsourceperformingthesameoperation,oreachtypeofaffectedsourcesubjecttothesameemissionlimitation. // (v)0  Establishtheallowablemassemissionrateinmg/hrforeachtypeofaffectedsourcethatiscontrolledbytheaddonairpollutioncontroldeviceusingequation $ 4,5,6,or7asappropriate: // @SS(4)VRhc1XELhclX60minutes/hour=AMRhc1 0 @HH(5)VRhc2XELhc2X60minutes/hour=AMRhc2 | @!(6)VRdcXELdcX60minutes/hour=AMRdc D @!(7)VRcaXELcaX60minutes/hour=AMRca   0  where hcappliestothetotalofventilationratesforallhardchromiumelectroplatingtankssubjecttothesameemissionlimitation, dcappliestothetotalofventilationratesforthedecorativechromiumelectroplatingtanks, caappliestothetotalofventilationratesforthechromiumanodizingtanks,andEListheapplicableemissionlimitationfrom40CFR63.342inmg/dscm.Therearetwoequationsforhardchromiumelectroplatingtanksbecausedifferentemissionlimitationsmayapply(e.g.,anewtankversusanexisting,smalltank). // (vi)0  Establishtheallowablemassemissionrate(AMR)inmg/hrforthesystemusingtheequation8,includingeachtypeofaffectedsourceasappropriate: // @"(8)AMRhc1+AMRhc2+AMRdc+AMRca=AMRsys " 0  Theallowablemassemissionratecalculatedfromequation8shouldbeequaltoorlessthantheoutletthreerunaveragemassemissionratedeterminedfromMethod306testinginorderforthesourcetobeincompliancewiththestandards. l %//  #XXX |#TRY3'"Letter (Portrait)P '3$Letter (Landscape) 3' Letter '3 Letter LandscapeT@//&Table1.5   @ ComplianceDatesforHardChromiumElectroplating,ChromiumAnodizing, t @ andDecorativeChromiumElectroplating  d  |XXX*(dd0 td"td"td"td"0t"##, dd ,@ dd"+  &%%%  &Typeofsource 4%%%!"%%% 4Sourcemustbeincompliance /%%%%% /ComplianceDatesforHardChromiumElectroplating *%X%% *Neworreconstructedwithinitialstartupafter12/16/93,butbefore1/25/95 +% | % +1/25/95(effectivedate) )%(8  % )Neworreconstructedwithinitialstartupafter1/25/95 +(%$ %( +immediatelyuponstartupofthesource )%(\  (% )Existing +(% %( +1/25/97 /%(% (% /ComplianceDatesforDecorativeElectroplating#XXX |&# |XXX *%X %(% *Neworreconstructedwithinitialstartupafter12/16/93,butbefore1/25/95 +%|% +1/25/95(effectivedate) )%(8 % )Neworreconstructedwithinitialstartupafter1/25/95 +(%$%( +immediatelyuponstartupofthesource )%(\(% )Existing +(%%( +1/25/96 /%(%(% /ComplianceDatesforChromiumAnodizing#XXX |Q*# |XXX *%X%(% *Neworreconstructedwithinitialstartupafter12/16/93,butbefore1/25/95 +%|% +1/25/95(effectivedate) )%(8% )Neworreconstructedwithinitialstartupafter1/25/95 +(%$%( +immediatelyuponstartupofthesource )%%\(% )Existing +%% %% +1/25/97&! %% &  x! TRP '3 Letter LandscapeY3'"Letter (Portrait) '3 Letter Landscape 3' LetterT#XXX |,#@  2 Table1.6  @WorkPracticeStandardsforAddOnControlDevice  t  |XXX*f(d d dd @ dd"(//f,dd ,dd ,pdd +  &%%% , &ControlDevice ;%%* "%%% ;WorkPracticeStandards =%%%* "%% =TimeRequired 0%! "%%% 0CompositeMeshPad(CMP)System "|  % "1.Visuallyinspectdevicetoensurethereisproperdrainage,nochromicacidbuilduponthepads,andnoevidenceofchemicalattackonthestructuralintegrityofthedevice.2.Visuallyinspectbackportionofthemeshpadclosesttothefantoensurethereisnobreakthroughofchromicacidmist.3.Visuallyinspectductworkfromtanktothecontroldevicetoensuretherearenoleaks.4.Performwashdownofthecompositemeshpadsinaccordancewithmanufacturersrecommendations %  P 1.1/quarter2.1/quarter3.1/quarter4.Permanufacturer '%D % 'PackedBedScrubber(PBS)System "< % "1.Visuallyinspectdevicetoensurethereisproperdrainage,nochromicacidbuilduponthepackedbeds,andnoevidenceofchemicalattackonthestructuralintegrityofthedevice.2.Visuallyinspectbackportionofthechevronblademisteliminatortoensurethatitisdryandthereisnobreakthroughofchromicacidmist.3.Sameasnumber3forCMPSystem.4.Addfreshmakeupwatertothetopofthepackedbed.a,b %   1.1/quarter2.1/quarter3.1/quarter4.Whenevermakeupisadded '%P !% 'PBS/CMPSystem "t"% "1.SameasforCMPSystem.2.SameasforCMPSystem.3.SameasforCMPSystem.4.SameasforCMPSystem. % H& 1.1/quarter2.1/quarter3.1/quarter4.Permanufacturer '%H*% 'FiberBedMistEliminatorc "l,% "1.Visuallyinspectfiberbedunitandprefilteringdevicetoensurethereisproperdrainage,nochromicacidbuildupintheunits,andnoevidenceofchemicalattackonthestructuralintegrityofthedevices.2.Visuallyinspectductworkfromtankortankstothecontroldevicetoensuretherearenoleaks.3.Performwashdownoffiberelementsinaccordancewithmanufacturersrecommendations. % 0 1.1/quarter2.1/quarter3.Permanufacturer '%4% 'Otherairpollutioncontroldevices " 6% "TobeproposedbythesourceforapprovalbytheAdministratoroftheU.S.EPA. % X7 Tobeproposedbysource /%%X8% /@,MonitoringEquipment *%|9%% *PilotTube "\:% "Backflushwithwater,orremovefromtheductandrinsewithfreshwater.Replaceintheductandrotate180degreestoensurethatthesamezeroreadingisobtained.Checkpitottubeendsfordamage.Replacepitottubeifcrackedorfatigued. % h= 1/quarter )%%\>% )Stalagmometerd )%H ?%% )Followmanufacturersrecommendations. +%%H @% +&H A  %% &aIfgreaterthanfifty(50)percentofthescrubberwaterisdrained(e.g.,formaintenancepurposes),makeupwatermaybeaddedtothescrubberbasin.  bForhorizontalflowscrubbers,topisdefinedasthesectionoftheunitdirectlyabovethepackingmediasuchthatthemakeupwaterwouldflowperpendiculartotheair  flowthroughthepacking.Forverticalflowunits,thetopisdefinedastheareadownstreamofthepackingmaterialsuchthatthemakeupwaterwouldflowcountercurrenttotheairflowthroughtheunit.cWorkpracticestandardsforthecontroldeviceinstalledupstreamofthefiberbedmisteliminatortopreventpluggingdonotapplyaslongastheworkpractice 4 standardsforthefiberbedunitarefollowed.dDeviceusedtomeasurethesurfacetensionofthebath.      T   TRY3'"Letter (Portrait)P '3 Letter Landscape 3' Letter '3 Letter LandscapeT@//& #XXX |0#Table1.7   @^^ DatesByWhichOperatorMustHavePerformedInitialPerformanceTest  t  |XXX*w(d ddd dd pdd (##w,4dd ,4dd ,hdd +  &%%% , &TypeofSource ;%%* "%%% ;InitialStartupDate =%%%* "%% =DateofInitialPerformanceTest 0%! "%%% 0Existinghardchromiumorchromiumanodizing +!0% +before12/16/95 '%h " 'performtestby7/24/97 '%h % 'Existingdecorativechromium +! T % +before12/16/95 '%  " 'performtestby7/24/96 '% % 'Existinganysource +!4 % +after12/16/95 '%4 " 'performtestwithin180daysafterinitialstartupdate '%4 % 'NeworReconstructed +! % +after12/16/93andbefore1/25/95 '%X " 'performtestby7/24/95 '% % 'NeworReconstructed +!0 % +after1/25/95 '%0 " 'performtestwithin180daysafterinitialstartupdate )%%0 % )Existing,New,orReconstructedwithanextensiongrantedbyAPCDorU.S.EPA 2%!h%% 2atanytime 4%%! "% 4performtestwithin180daysafterterminationofextension&   %% &#XXX |xD#  ` @//& Table1.8  @ SummaryofOngoingMonitoringRequirements |XXX  t *w(dd4dd 4dd hdd (##w,dd ,dd ,(dd"+  &%%% , &AirPollutionControlSystem ;%%* "%%% ;MonitoredParametera =%%%* "%% =MonitoringFrequency 3%$X"%%% 3CompositeMeshPadSystem %0% %Pressuredropacrosssystem .%0  .Daily +%0 % +PacketBedScrubber 3)'  % 3Pressuredropacrosssystem %    Daily +%  % + %  % %Velocitypressureatsysteminlet % l  Daily '%l % 'PacketBedScrubber/CompositeMeshPadSystem " D % "Pressuredropacrossthemeshpadsystem %  D  Daily '% D % 'FiberBedMistEliminator "$ % "Pressuredropacrossthecontroldevicelocatedupstreamofthefiberbedthatpreventsplugging % h  Daily '%$ % 'WettingAgentorCombinationWettingAgent/FoamBlanketFumeSuppressants " % "Surfacetension % H  Daily '%H % 'FoamBlankettypeFumeSuppressant "l% "Foamblanketthickness % l Every4hoursb,c )%%l% )FumeSuppressant/AddonControlDevice )%D%% )Asidentifiedabove +%%D% +Everyhourc,d&D   %% &aAcceptablevaluesforthesemonitoredparametersareestablishedduringinitialperformancetesting. 6! bIftherearenoexceedancesofthemaximumsurfacetensionafterforty(40)hoursofoperation,thenthemonitoring B# frequencycanbedecreasedtoonceeveryeight(8)hours.Iftherearenoexceedancesforthenextforty(40)hours,thenthefrequencycanbedecreasedtoonceeveryforty(40)hours.Ifanexceedanceoccursatanytimeafterthat,thentheinitialmonitoringschedule(everyfour(4)hours)mustberesumed.cTheinitialschedulemustberesumedforeverynewtanksolution. *( dIftherearenoexceedancesoftheminimumfoamblanketthicknessafterforty(40)hoursofoperation,thenthe >* monitoringfrequencycanbedecreasedtoonceeveryfour(4)hours.Iftherearenoexceedancesforthenextforty(40)hours,thenthefrequencycanbedecreasedtoonceeveryeight(8)hours.Ifanexceedanceoccursafterthat,thentheinitialmonitoringschedule(everyhour)mustberesumed.#XXX |0L# |XXX  - #XXX |X#TRP '3$Letter (Landscape)Y3'"Letter (Portrait) '3 Letter Landscape 3' LetterT@  2 Table1.9  @ OperatingParameterValuesUsedforOngoingComplianceMonitoring |XXX  t *w(d ddd dd (dd"(//w,dd ,dd ,xdd +  %%% , @||DMonitoredParameter )%% %%% )  ApplicableAirPollutionControlSystems 4%%%!X %% 4d\  MethodUsedtoEstablishAcceptableValues\  0%!X %%% 0#]PressureDrop "0 % "CompositeMeshPadSystemPackedBedScrubberSystemFiberBedMistEliminator % D   Therangecanbe:1.Therangeofpressuredropsmeasuredduringmultipleperformancetests;or2.1inchofH20columnabouttheaveragepressuredropmeasuredduringthreecomplianttestruns(i.e.,the D  sourcewasatorbelowtheapplicableemissionlimit) '% % 'VelocityPressure "h % "PackedBedScrubberSystem % h  Therangecanbe:1.Therangeofvelocitypressuresmeasuredduringmultipleperformancetests;or2.10percentabouttheaveragevelocitypressuremeasuredduringthreecomplianttestruns '% t % 'SurfaceTension "T % "WettingAgent % T  1.Amaximumvaluecanbeestablishedduringperformancetestingincludingatleastthreecomplianttestruns;or2.Operatorcanforegotesting(ifhavedecorativechromiumelectroplatingorchromiumanodizingoperation)andaccept45dynes/cmasmaximumsurfacetensionvalue )%%(% )FoamBlanketThickness )%%% )FoamBlanketFumeSuppressant +%%L% +1.Aminimumfoamblanketthicknessmeasuredduringatleastthreecomplianttestruns;or2.Operatorcanelecttouse1inchastheminimumfoamblanketthickness&L   %% &#XXX |Z#  D  TRY3'"Letter (Portrait)P '3$Letter (Landscape) 3' Letter '3 Letter LandscapeT@%Table1.10  @ SummaryofNotificationofConstructionorReconstructionand@22InitialNotificationRequirements |XXX  d *w(dddd dd xdd (##w,P dd ,dd ,dd +  &%%%  &RelevantDates ;%%*"%%% ;TypeofSource =%%%*"%% =Requirements 0%!"%%% 0Startupdatebefore1/25/95 "X% "  Existing '%X   'h1.Submitinitialnotificationonorbefore7/24/95(180daysafterpromulgationoffinalrule). '%  % 'Startupdateafter1/25/95andconstructionorreconstructioncommencedbefore1/25/95 " % "  NeworReconstructed '% D  '`i1.ObtainaconstructionpermitfromAPCDpriortocommencingconstruction.#XXX, |e#a |XXX  D 2.Submitaconstructionschedule.#XXX, |,j#b |hXX   3.Submitanotificationofactualstartupdateofsourcewithinthirty(30)calendardaysofstartup. )%%  % )Startupdateafter1/25/95andconstructionorreconstructioncommencedafter1/25/95 )%  %% )  NeworReconstructed 4%%!D  % 4k1.ObtainaconstructionpermitfromAPCDpriortocommencingconstruction.#XXX, |j#a |XXX D  2.Submitnotificationofthedateconstructionorreconstructioncommencedwillordidbeginwithinthirty(30)calendardaysaftercommencementdateofconstructionorreconstruction.3.Submitanotificationofactualstartupdateofsourcewithinthirty(30)calendardaysofstartup.&8#  %% &#XXX |l#a |XXXԀColoradoRegulationNo.3PartBSectionIII.A.5. 0# #XXX, |jn#b |XXXԀU.S.EPArequiresanoperatortosubmitanotificationthatanoperatorisconstructingorreconstructingachromium |$ electroplatingorchromiumanodizingsource.(40CFR63.345(b).)#XXX |n# |XXXԀAtthesametime,anoperatormustsubmita D% notificationofthedatewhentheconstructionorreconstructionwascommenced.#XXX |p# |XXXԀ(40CFR63.347(c)(2)(i).)#XXX |p#   &    '    3,Fr4XepX3'^q21.  2  3  0 F   IntroductiontotheRegulationsConcerningChromiumElectroplatingandAnodizing  Tanks Mq'^qq݌tF#F# Ќ   F The1990CleanAirActAmendmentsestablishedanewregimeconcerningthesettingtheemissionstandardsfornewandexistingsourcesofhazardousairpollutants.ThisnewregimerequiresthemaximumdegreeofreductioninemissionsofcertainhazardousairpollutantsthattheAdministratorofU.S.EnvironmentalProtectionAgency( U.S.EPA)determinesisachievableforneworexistingsourcesinthecategoryorsubcategorytowhichtheemissionstandardapplies.  #  1      ׀This   regimeisknownasmaximumachievablecontroltechnology( MACT)standard. F Chromiumelectroplatingandchromiumanodizing(orchromicacidanodizing),arewithinalistedsourcecategory.Therefore,thefollowingsectionsincludeageneraldescriptionofthechromiumelectroplatingprocessesandtherequirementsestablishedbyU.S.EPAfortheseveraltypesofchromiumelectroplatingandchromiumanodizingsystems.XXXXXX F OnewaytheU.S.EPAandColoradoAirPollutionControlDivision( APCD)trytolimitthe 0  emissionofairpollutants,istoregulate sources.U.S.EPAhasdefinedasourceinthechromiumelectroplatingregulationstobeeachchromiumelectroplatingorchromiumanodizingtankatfacilitieswhichperformhardchromiumelectroplating,decorativechromiumelectroplating,orchromiumϜanodizing.eH  #  2      ׀Thechromiumelectroplatingoranodizingtankisthereceptacleorcontainerinwhichhard t ordecorativechromiumelectroplatingorchromiumanodizingoccurs.f8  #  3      #XXXXXXv#XXXXXX d #XXXXXXIz#XXXXXX F Eachsourceortankissubjecttoanemissionlimitation.Therearedistinctemissionslimitations T andrequirementsdependingonwhetherthesourceisahardchromiumelectroplatingtank,decorativeϜchromiumelectroplatingtank,orchromiumanodizingtank.#XXXXXXӠz#XXXXXXAnemissionlimitationisthe 4 concentrationoftotalchromiumallowedbyU.S.EPAtobeemittedfromasource.Emissionlimitationsforchromiumelectroplatingsourcesareexpressedinmilligramsperdrystandardcubicmeter(mg/dscm)orbytheallowablesurfacetensionexpressedindynespercentimeter(dynes/cm).Surfacetensionisthepropertythatexistsinthesurfacefilmofallliquidsandtendstopreventliquidsfromspreading.EmissionlimitationsarediscussedthroughoutthisChapter1.0,andarefoundinTables1.2and1.3.#XXXXXX |#XXXXXX F ThefollowingsymbolsareusedtoindicatespecialitemsofinterestforInspectors. XXX+#XXX #0 F PracticaltipforInspector F#F#  XXX3#XXX #0 F PracticaltipforOperator!& F#F#  XXX#XXX #0 F Inspectorresponsibility"<!F#F#  XXX #XXX #0 F WarningforInspector#R "F#F#   $h!# & `      '   '21.  3  3  0 F   ChromiumElectroplatinginGeneral s'݌F#F# М    m7   m721.  3  .  1  3  0 F   SomeBasicsonChromiumElectroplating m7݌dF#F# Ќ   F Chromiumelectroplatingisaprocessbywhichalayerofchromiumiselectrodepositedonabasematerial.Theprocessisusedforseveralpurposes,includingto:1)protectthebasematerialfromcorrosion(chromiumanodizing);2)providealayerofelectricalinsulation(chromiumanodizing);3)createasurfacewhichprovideswearresistance,alowcoefficientoffriction,andhardness(hardϜchromiumelectroplating);or4)addadecorativelayerontothebasematerial(decorativechromium'` Ielectroplating). F Toelectroplatemeanstocoatmetalbyusingelectrolysis.Electrolysisistheproductionofchemicalchangesbypassageofanelectriccurrentthroughanelectrolytesolution.Alayerofchromiumisdepositedonabasemetalthroughachemicalchangecreatedbyanelectriccurrentpassingthroughthesolution.Theresultisahardlayerofchromiumcoatingthebasematerial. F Anelectroplatingoranodizingbathistheelectrolyticsolutionusedastheconductingmedium.   #  4      ׀   #XXXXXXӂ~#XXXXXXChromiumplatinggenerateshydrogenandoxygenattheelectrodes.Whenthesesmallgasbubbles  breakthesurfaceofthesolution,smalldropletsofchromiumfromtheplatingbathareformed.ThesechromiumdropletsconstitutehazardousairpollutantsandcanberemovedfromtheairbytheuseofairpollutioncontrolequipmentasdiscussedinSection1.5ofthisChapter1.0.#XXXXXXS#XXXXXX   m7   m7R21.  3  .  2  3  0 F   TypesofChromiumElectroplatingSources Em7R}݌DF#F# Ќ   F Thereareseveraltypesofelectroplatingsystems:chromiumanodizingorchromicacidanodizing,decorativechromiumelectroplating,largehardchromiumelectroplating,andsmallhardchromiumelectroplating.EachtypeofsystemhasauniquesetofFederalrequirementsanoperatormustcomplywith.InColorado,mostofthechromiumelectroplatingsourcesaredecorativechromiumelectroplatingsystems. F AnInspectormustbeabletoassesswhattypeofsystemisbeinginspectedbaseduponthefunctionservedbythesourceandprocessparametersdesignatedbyU.S.EPA.ThefunctionstypicallyservedbyeachtypeofchromiumelectroplatingsystemaredescribedinthisSection1.3.2inthisChapter1.0.Processparametersincludetheplatingthickness,howmuchcurrentisapplied,andthetimeittakestoelectroplate.SeeTable1.1forasummaryofthefunctionsandprocessparametersassociatedwiththedifferenttypesofelectroplatingfacilities.IfafacilitysoperationsdonotfallexactlywithinadefinitionprovidedinthisFederalregulation,theAPCDandlocalagencymustdeterminewhichdefinitionapplies.ThisisanotherreasontheInspectormustdeterminepriortovisitingthefacilitysitewhichtypeofchromiumelectroplatingoranodizingsourcesareinvolved.   U#   U#0 F 21.  3  .  2  .  1  3  04F#F#  ChromiumAnodizingorChromicAcidAnodizing0H  #  5      U#ݐ݌4&"%4#4# Ќ   F Chromiumanodizingorchromicacidanodizingistheelectrolyticprocessbywhichachromiumoxidefilmorlayerisproducedonthesurfaceofabasemetal(i.e.,aluminum)electrolytically.Theprocessusesachromicacidsolution.Chromicacidisthecommonnameforchromiumanhydride )p&) (CrO3).Inchromiumanodizing,theparttobeanodizedactsastheanode  #  6      ׀intheelectricalcircuit,and  thechromicacidsolutionservesastheelectrolyte.Thechromicacidsolutiontypicallyhasaconcentrationrangingfromfifty(50)toonehundred(100)gramsperliter.Theresultisalayerwhichprovidescorrosionresistanceforaircraftparts,architecturalstructures,orelectricalinsulation.Examplesofchromiumanodizingproductsincludeaircraftparts,electronicparts,architecturalstructures,andbicyclerims.   U#   U#)0 F 21.  3  .  2  .  2  3  04F#F#  &  DecorativeChromiumElectroplating58  #  7      U#)T݌ 4#4# Ќ