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. January25 , 1995 8 Docket Number: 

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# Environmenta l Protectio n Agenc

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## 4 0 CF R Part s 9 an d 6 3 , , Nationa l Emissio n Standard s fo r ';•:• ! Chromium Emission s Fro m Har d an d . || | Decorativ e Chromiu m Electroplatin g an d Chromium Anodizin g Tanks ; Fina l Rul e 

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# 1494 8 Federa l Registe r / Vo l 60 , No . 1 6 /

Wednesday , January ; 25 , .199 5 / Rule s an d.Regulation s P. 3

ENVIRONMENTA L PROTECTIO N AGENC Y 4 0 CF R Part s 9 an d 6 3 [AD-FRL--5115-7 ] RIN2060-nAC1 4 Nationa l Emissio n Standard s fo r Chromiu m Emission s Fro m Har d an d Decorativ e Chromiu m Electroplatin g an d Chromiu m Anodizin g Tank s AGENCY : Environmenta l Protectio n Agenc y (EPA) . ACTION : Fina l rule . SUMMARY

: Pursuan t

t o sectio n 11 2 ofth e Clea n Ai r

Ac t a s amende di n 199 0 (th e Act) , thi s actio n promulgate s final standard s tha t

limi t th e discharg e o f

' chromiu mcompoun dai r emission s fromexistin g an dne w har dchromiu m: electroplating , decorativ e chromiu m* electroplating , an dchromiu manodizin g tank s a t majo r an dare asources . Chromiu mcompound s ar e amon g th e 18 9 hazardou s ai r

pollutant s (HAP ) ' liste dfo r regulatio n unde r

sectio n 11 2 o f th e Act . Har dan ddecorativ e chromiu melectroplatin g an dchromiu m anodizin g tank s hav e bee n identifie db y th e EP A a s significan t

emitter s o f chromiu mcompound s t o th e atmosphere . Th e purpos e o f th e final rul e i s t o reduc e chromiu mcompoun d ai r emission s fro mth e sourc e categorie s identifie dabove . Al l affecte dsource s mus t limi t emission s t o th e leve l o f th e maximu machievabl e control.... . technolog y (MACT) . Th e EP A i s als o - . finalizing Method s 306 , 306A , an d306 B wit hthes e standards . DATES : Effective Date: Januar y 25,1995 . Incorporation by Reference. The

- . incorporatio n b y referenc e o f certai n , publication s i n thi s standar di s approve db y th e Directo r o f th e Office'-•' • o f th e Federa l Registe r

a s o f Januar y 25, . 1995 . '•' • .

' " • - . ' : .'". ' ; Jf

:, ''3. '"*"• "".' Judicial Review. Under'.sectio n .•./ : 307(b)(1 ) ofth e Act , judicia l review o f nationa l emissio n standard s fo r hazardou s ai r

pollutant s (NESHAP ) i s availabl e onl y b y filin g apetitio n fo r revie w i n th e U.S . Cour t o f Appeal s fo r th e Distric t

o f Columbi aCircui t

withi n 6 0 day s o f

today' s publicatio n o f thi s final rule , tinde r

sectio n 307(b)(2 ) ofth e Act , th e requirement s tha t ar e th e subjec t o f today' s notic e ma y no t b e , . challenge dlate r

i n civi l o r

crimina l >

. proceeding s brough t

b y th e EP A t o ; enforc e thes e requirements, v : ADDRESSES

f DocJtet . Docke t

No : A-r_8

- 02 , containin g informatio n considere d' b y th e EP A i n developin g th e * . j promulgate dNESHA P fo r har dari d decorativ e chromiu melectroplatin g an d chromiu manodizin g tank s i s available,;.- : ; fo r public^inspectio n an dcopyin g between 8 a.m..an d5:3 0 p.my , Monday ! throug hFriday , excep t

fo r Federa l v:- ; holidays , a t

th e EPA' s Ai r

an dRadiatio n Docke t an dInformatio n Center , Roo m- M1500 , U . S . Environmenta l Protectio n Agency , 401 M Street , SW: , Washington , D C 20460 ; telephon e (202 ) 260-7548 . A reasonable fe e ma y b e charge dfo r ~ copying . . •-" . -"• • ".

- • Background

Information Document A backgroun dinformatio n documen t (BID ) fo r th e promulgate dNESHA P ma y b e obtaine dfromth e docket ; th e U . S

- EP A Librar y (MD-35) , Researc hTriangl e Park , Nort hCarolin a27711 , telephon e (919 ) 541-2777 ; o r

fromNationa l Technica l Informatio n Services , 528 5 Por t Roya l Road , Springfield . Virgini a 22161 , telephon e (703 ) 487-4650 . Pleas e refer t o "Chromiu mEmission s from Chromiu mElectroplatin g an dChromi c Aci dAnodizin g Operationsr

- : Backgroiln dInformatio n fo r ..'.. • Promulgate dStandards " (EPA-^453-*R

94-082b) . Th e BI D contain s asummar y t ; , o f th e publi c comments , mad e o n th e : ; propose dstandard s an dEP A response s t o th e comments . FO RFURTHE RINFORMATIO

N CONTACT

: Mr . Lali t Banke r ofth e Emissio n Standard s Divisio n (MD-13) , U . S . Environmental . Protectio n Agency , Researc hTriangl e Park , Nort hCarolin a27711 ; telephon e (919)541-5420 , SUPPLEMENTAR

Y INFORMATION

: Th e informatio n presente di n this.preambl e i s organize da s follows : •I . Backgroun d•'**.; * II . Summary • ' . • > . A . Summary o f

Promulgate dStandards . ' . B . Summary of

Majo r Change s Sinc e Proposa l - ".,. . -.. • HI . Summary o

f Environmental , Energy , Cost . : • an dEconomi c Impact s

. A . Environmenta l an dEnerg y Impact s B . Cos t Impacts . ; .". ' C Economi c Impact s IV . Publi c Participatio n V . Significant

Comment s an dResponse s A . Selectio n o

f Sourc e Categorie s -en

d Pollutant s t o b e Regulate d B . Selectio n of

MACT/GACT Approac h C . Selectio n o f

MACT fo r Har dChromiu m Electroplatin g Tank s D . Selectio n of

MAC T fo r Decorativ e Chromiu mElectroplatin g an dChromiu m Anodizin g Tanks . \. JE. Selectio n o

f th e Forma

t of th e Standar d

. F . Selectio n o

f th e Emissio n Limit s G . Selectio n of

Complianc e Date s H . Selectio n o

f Monitorin g Requirement s I . Selectio n o

f Tes t Method s • ) . Selectio n o

f Reportin g an d' S ' Recordkeepin g Requirement s J '" ' ,

.. I C Operatin g Permi t

Progra m• • \, _ VI . Administrativ e Requirement s - . v ^ ' ~ '

. * A.-Docket.:./ ' .'•>. . B , Executiv e Orde r

1286 6 • • ' C . Paperwor

k Reductio n Ac t D . RegulatoryTlexibilit y Ac t • . .

- E . Miscellaneous*. ; ' " . • : • - : I . Backgroun d Sectio n 112(b ) o f

th e Ac t list s 18 9 HA P an drequire s th e EP A t o establis h nationa l emissio n standard s fo r al l * majo r source s an dsom e are asource s of . thos e HAP . Amon g th e liste dpollutant s ar e chromiu mcompounds . O n Jul y 16 , 199 2 (5 7 F R31576) , th e EP A publishe d alis t o f majo r an dare asource s fo r whic hNESHA P ar e t o b e promulgate d an do n Decembe r

3,199 3 (5 8 F R83941) , th e EP A publishe daschedul e fo r promulgatio n o f

thos e standards . Th e har dan ddecorativ e chromiu m electroplatin g an dchromiu manodizin g sourc e categorie s ar e include di n th e lis t o f majo r an dare asource s fo r

whic hth e EP A i s t o establis hnationa l emissio n standard s byNovembe r 1994 . Thi s NESHA P wa s propose di n th e Federa l Registe r

o n Decembe r

16,199 3 (5 8 F R65768) . A publi c hearin g o n this . rul e wa s conducte do n Januar y 20,1994 . I n addition , 6 2 letter s commentin g o n th e propose drul e wer e receive ddurin g th e pubU c commen t

period , an d3 lat e comment s wer e received . II . Summar y A. Summary of

Promulgated

Standards Th e final rul e applie s t o majo r an d are asource s performin g har dchromiu m electroplating , decorativ e chromiu m electroplating , an dchromiu m• anodizing . Th e affecte dsourc e i s eac h chromiu melectroplatin g o r chromiu m anodizin g tank . Th e emissio n limitation s fo r

eac ho f thes e sourc e categorie s ar e summarize di n Tabl e 1 . Thes e emissio n limitation s appl y onl y durin g tan k

operation , includin g period s o f

startu p an dshutdown . Th e emissio n limitatio n fo r al l ne w har d chromiu melectroplatin g tanks , an dfor existin g har dchromiu melectroplatin g • • tank s tha t

ar e locate da t

large , har d chromiu melectroplatin g facilitie s i s base do n th e us e o f

acomposit e mesh

- .-

. pa dsystem . Th e emissio n limitatio n fo r existin g har dchromiu melectroplatin g tank s locate da t

small , har dchromiu m electroplatin g facilitie s i s base do n th e • us e o f apacked-be dscrubber . Fo r al l existin g an dne w source s performin g . . decorative , chromiu melectroplatin g an d al l existin g an dne w source s performin g chromiu manodizing , th e standar di s . • base do n th e us e o f

fum e suppressants . Eve n thoug hthes e technologie s forme d theiase s for . th e standards , an y technolog y ca n b e use da s lon g a s i t i s j demonstrate dt o mee t

th e prescribe d emissio n limitation..Al l are aan dmajo r . .

- source s mus t

limi t emission s t o th e - . - leve l o f th e inaximu machievabl e - contro l technology . (MACT) . .•.-."•' • 'Federa l Registe r/ Vol . 60 , No . 1 6 7 .Wednesday , January 25 , 199 5 /Rule s rind\ Fiegulatiohs ; ..,494 9 TABL E 1.—STANDARD S FO R CHROMIU M ELECTROPLATIN G AN D CHROMIU M ANODIZIN G TANKS BASE D ON.MACT ; ' ' Typ e o f tan k • •*".; " Emissio n limitations•.•... / ; ; ;V' '
_ . '"'-'."^V"
. • • Small •. . ..•'"- •.*•" Large- - ', :'••.' ••'• -- * ' •- '

. /

- _^:._ j -. • _ Al l ne wtank s • ... - Har d Chromiu m Platin g Tank s 0.0 3 mg/dcs m (1.3x10 - 3 gr/dscf ) ...:...„..*...'..:.;:'.....-
. 0.01 5 mg/dcs m (6.6x10 - 6 gr/dscf )
......... . '-.
. •'.
. .•• '
. : .' • . .-••••-. • - .•••.-.*.•.'•.-
. 0:01 5 mg/dscrr i (6.6x10-«.gr/dscf ) '•• " 0.01 5 mg/dsc m (6.6x10~ 6 gr/dscf ) Decorativ e Chromiu m Platin g Tank s Usin g a Chromi c Aci d Bat h Al l ne wan d existin g tank s 0.0 1 mg/dsc m "(4.4x10- ? gr/dscf ) Chromiu m Anodizin g Tank s Al l ne wan d existin g tank s 0.0 1 nrig/dscm"(4.4x10- 6 gr/dscf)
. •I n accordanc e wit h § 63.342(d)(2) , pwner s o roperator s usin g a fum e suppressan t containin g a wettin g agen t a s a -contro l techniqu e ca n mee t a n alternat e emissio n limitatio n of
. 4 5 dynes/c m (3.1.x10 - 3 lbf/ft)
. '.'•'
. Owner s an doperator s o f al l affecte dsource s ar e als o subjec t t o wor k practic e standards , whic h requir e the mt o complet e an operatio n an dmaintenance . (O&M ) pla n tha t

contain s th e minimu melement s of §63.342(f)(3 ) an dTabl e 2 . • '•••..'• • ; '

- ' -•:.- . P. 4

;>•

TABL E 2.—SUMMARYO F WOR KPRACTIC E STANDARD S Contro l techniqu e Composit e mesh-pa d (CMP ) sys tem .

Packed-be d scrubbe r(PBS )

PBS/CM P syste m
Fiber-be d mis t eliminator c ,

Ai rpollutio n contro l devic e (APCD ) no t liste d i n mie
. ; -. • Wor k practic e standard s 1
. Visuall yinspec t devic e t o ensur e ther e i s prope rdrainage , n b chro mi caci d buildu p o n th e pads , an d n o evidenc e o f chemica l attac k o n th e structura l integrit yo f th e device
. 2
. Visuall yinspec t bac k portio n o f th e mes h pa d close t t o th e fa n t o ensur e ther e i s n o breakthroug h o f chromi caci d mist
. ' 3
. Visuall yinspec t ductwor k fro m tan k

o rtank s t o th e contro l device t o ensur e ther e ar e n o leaks
. 4
. Perfor m washdow n o f th e composit e mesh-pad s i n accordanc e wit h manufacturer s recommendations
. 1
. Visuall yinspec t devic e t o ensur e ther e i s prope rdrainage , n o chro mi caci d buildu p o n th e packe d beds , an d n o evidenc e o f chemica l attac k o n th e structura l integrit yo f th e device
. 2
. Visuall yinspect bac k portio n o f th e chevro n blad e mis t eMminato r t o ensur e tha t i t i s dr yan d ther e i s n o breakthroug h o f chromi caci d mis t . - .' ' "'',' • 3
. Sam e a s numbe r3 abov e ',••• • .........;.. ! .........!.:...,...-,
. 4
. Ad d fres h makeu p wate rt o th e to p o f th e packe d bed* * 1
. Sam e a s fo rCM P syste m .. ; 2
. Sam e a s fo rCM P syste m ...;. : : 3
. Sam e a s fo rCM P syste m .*.-. ; .'..'-.. ! -...... : :..*.....'....
. 4
. Sam e a s fo rCM P syste m • • '..::... 1
. Visuall yinspec t fiber-be d uni t an d prefilterin g devic e t o ensur e •there-i s prope rdrainage , n o chromi caci d buildu p i n th e units , an d n o evidenc e o f chemica l attac k o n th e structura l integrit yo f .th e de vices
. •'.- : • -- . .*/''- * X r V
. ; *
. ' '.-='• • . ' 2
. Visuall yinspec t ductwor k fro m tan k

o rtank s t o th e contro l devic e t o ensur e ther e ar e n o leaks
. - .-•'•- • y- *'i
. •'•'.'

* .- :'^- : :«';,--•- 3
. Perfor m washdow n o f fibe relement s i n accordanc e wit h manufac - • -turersrecommendations
. . ; .,:.;•-: . • ..•.'
. ^
. T o b e propose d b yth e sourc e fo rapproval.byth e Administrato r:.*.:>.:
. Frequenc y 1.1/quarter
. 2.1/quarter
. 3
. 1/quarter.
. 4
. Pe rmanufacturer
. 1
. 1/quarter. ' 2.1/quarter
. . 3
. 1/quarter
. 4
. Wheneve rmakeu p i s added
. 1,1/quarter
. 2
. i /quarter
. 3
. 1/quarter
. . ' ' 4
. Pe rmanufacturer
. 1.-.1/quarter
. :
2. 1/quarter. '»"••-''.Si,'/'•.'.' 3
. Pe rmanufacturer
. . ' • • ' ..,, , To.b e propose d b ythe
. sourc e fo r ;•• • approva l b yth e .Administrator
. ..:;.. Monitorin g Equipmen t Pito t tub e Stala< j m q mete r'3 Backflus h wrt h water , o rremov e fro m th e duc t an d rinse wit h fres h water . Replac e i n th e duc t an d rotate 18 0 degree s t o ensur e tha t th e sam e zer o readin g i s obtained
. Chec k pito t tub e end s fo rdarn- r age . Replac e pito t tubeli f cracke d o rfatigued: : ^ i v^-vf- * " Follo wmanufacturer s recommendations
. J-.JyJjJj"JJ J'J. : ':.'yJ 1/quarter ,

•I f greate rtha n 5 0 percen t o f th e scrubbe rwate ri s draine d (e.g. , fo rmaintenanc e purjx>ses), ; makeu p yy^ter'ma yb e added , t o th e scrubbe r 'basin.- - .. •- ' ; i - : ; . . . * ••<••' -^.••-,••:•.- • • • ......... . : ' • . • '•.*•'.•'•; : - : .--.••3.,.:...<-.'•:.••':..- . ,=•..":•- , . . .\.- . .: < -.,-

_ .-.- . !•.;. . "Fo rhorizontal-flo wscrubbers , to p i s define d a s th e sectio n o f th e uni t directl yabov e th e packin g medi a suc h tha t th e makeu p wate rwoul d flo wperpendicula rt o th e ai rflowthroug h th e packing
. Fo rvertical-flo wunits , th e to p i s define d a s th e are a downstrea m o f th e packin g materia l suc h tha t th e makeu p wate rwoul d flowcountercurren t t o th e ai rflow , throug h th e unit
. •:•;'•' : ; *- ^
. , * : *^ - .-••••--.'•....••:
. '.•'•- " "' • - ."• «Wor k practic e standard s fo rth e contro l devic e installe d upstrea m o f th e fiber-bed.mis t eliminato rt o preven t pluggin g d o no t appl ya s lon g a s th e wor k practic e standard s fo rth e fiber-be d uni t ar e followed
. - •*••.••" - .. - •-.•• • - ; , . r . • : 1 ' 

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f?95ip:^Feder^-R-ffi ^ Rule s an dRegulation s Al l existin g source s performin g har d1

- • " chromiu melectroplatin g an dchromiu m anodizin g mus t

compl y wit hth e JJJJ_ emissio n limitation s withi n 2 year s o f •".. Januar y 25,1995 . Al l existin g source s performin g decorativ e chromiu m electroplatin g mus t

compl y wit hth e emissio n limitation s withi n 1 yea r of Januar y 25,1995 1 Al l ne w an d, : reconstructe dsource s mus t compl y immediatel y upo n startup . Source s mus t

demonstrat e initia l complianc e wit hth e prescribe d emissio n limitatio n i n accordanc e wit h § § 63.343(b ) an d63.344 . Continuou s complianc e i s demonstrate dthroug hth e monitorin g require db y § 64.343(c) , a s summarize di n Tabl e 3 . A s indicate di n thi s table , th e typ e o

f complianc e .. . monitorin g performe di s base do n th e typ e o f contro l techniqu e use dt o compl y wit hth e emissio n limitation , no t th e typ e o f

sourc e bein g controlled . TABL E 3.-*-SUMMAR Y O F MONITORIN G REQUIREMENT S ; Contro l techniqu e Initia l complianc e tes t Parameter(s ) fo rcomplianc e monitorin g Frequencyo f compli anc e monitorin g Composit e mesh-pa d (CMP) ' system . Packed-be d scrubbe r(PSB ) PBS/CM P system— . _ . Fiber-be d mis t eliminato r.... . Ye s Ye s Yes
. Ye s Pressur e dro p acros s th e unit
.

Wettin g agent-typ e fum e suppressant . Foa m blanket s Ai rpollutio n contro l devic e (APCD ) no t liste d i n rule.
. Ye s (Unles s th e criteri a o f §63.343(b)(2 ) ar e met)
. Ye s * : :. : Velocit ypressur e a t th e inle t o f th e contro l syste m an d pressur e drop acros s th e uni t Pressur e dro p acros s th e uni t _ Pressur e dro p acros s th e fiber-be d mis t eliminato ran d th e pressur e dro p acros s th e upstrea m contro l devic e use d t o preven t plugging
. Surfac e tensio n Foa m thicknes s ._.'
. T o b e propose d b yth e sourc e fo rapprova l b yAdminis trator . .- . 1/day
. 1/day
. 1/da y. 1/day
. Onc e ever y 4 hours. * Onc e pe rhour. " N/A.
. •Frequenc yca n be-decrease d accordin g t o §63.34 3 (c)(5)(fi ) an d (c)(6)(H ) o f subpart N
. Owner s Q

r operator s of

affecte d source s ar e require dt o kee p th e record s require db y § 63.34 6 t o documen t complianc e wit hthes e standards . Record s includ e thos e associate dwith th e wor k practic e standards , . performanc e tes t

results , complianc e monitorin g data , duratio n o f exceedances , an drecord s t o suppor t a Federally-enforceabl e limi t o n facility size . Report s mus t als o b e periodicall y submitted ! Tabl e 4 summarize s th e report s t o b e submitte dan dth e reportin g timeframes .
Sectio n i n • • Subpart N § 63.345(b ) § 63.347(c)(1 ) .V..
. § 63.347(c)(2 )
_ _ § 63.347(d ) § 63.347(e )
. § 63.347(f ) ,;;', V §63.347(g ) ..;...... . §63.347(li ) :....C„ , §63.347(i ) JS1S '.J-.y TABL E 4.—SUMMAR Y O F REPORTIN G REQUIREMENT S Description " *.;' " ' Notificatio n o f constructio n o rreconstructio n ' „ . -Initia l notification'.....;......
. '..:...: 1 -^Notificatio n o f whe n constructio n commence d —Notificatio n o f actua l startu p :;. . Notificatio n o f complianc e statu s .._. __ . . ..: . Notificatio n o f performanc e test^esult s .„_•..„...

__.'
. __ . Complianc e statu s report s fo rare a source s '_:......•.'.'..•...'.:.'. —i., -^—Initia l notificatio n fo ruser s o f TV C bath s ......J~. .._..;.. : —Notificatio n o f complianc e statu s foruser s o f TV C bath s .. . ' " Timefram e fo rsubmitta l Depend s o n whe n sourc e wa s constructed—se e : § 63.345(b)(5)
. ' 18 0 day s afte rth e effectiv e date
. —Withi n 3 0 day s o f commencemen t fo rsource s buil t afte r effectiv e date , o rwit h notificatio n require d b y§63.345(b)'i f buil t prio rt o effectiv e date
. • —Withi n 3 0 day s o f startup . A t leas t 6 0 day s prio rt o test . Withi n 9 0 day s o f performanc e tes t (i f a tes t i s conducted ) o r withi n 3 0 day s o f complianc e date
. Withi n 9 0 day s o f performanc e tes t 2 times/yr , o r4 times/y ri f exceedance s occu ro ri f requeste d b yAdministrator
. v
_, ' • . .Complet e once/y ran d maintai n o n site,
. or . 2 times/y ri f

. exceedance s occu ro ri f requeste d b yAdministrator
. —Within118 0 day s o f effectiv e date
. . . •• . y -•-Withi n 3 0 day s o f complianc e date
. - —Withi n 3 0 day s o f proces s chang e B. Summary

of Major Changes

Since Proposal I n respons e t o publi c comment s receive dand-additiona l analyse s performe db y th e EPA , th e following change s hav e bee n mad e t o th e fina l rul e sinc e proposal : 1 . Th e emissio n limit s associate dwit h th e contro l technologie s tha t for mth e base s fo r th e standard s hav e bee n revised . Th e emissio n limi t base do n th e us e o f acomposit e mesh-pa dsyste mi s 0 01 5 milligram s o f tota l chromiu mpe r dr y standar dcubi c mete r (mg/dscm ) o f exhaus t air . Th e emissio n limi t

base don . th e us e of afum e suppressan t

i s 0.0 1 mg/dscm . Th e emissio n limi t basedo n J th e us e o f apacked-be dscrubbe r

i s unchange d( 0 0 3 mg/dscm ) ' ~ -P. 6

Federa l Registe r

/ Vo l 60 , No . 1 6 /

Wediriesday , fenoary 25 , 1_<J S /.Ruie s ^^Regulation s •'.• : 495 1 j . . * TABLE3.—SUMMUM^OFiMONITOI- ^ Contro l techniqu e Initia l comfflianc e test Paiaroetefljs ) Joroompflianc e monitorinf l Frequenc y o f oorapfk . * . anoe-monitoring . Composite mesh-pa d JCMP) •system . Packed-be d "scrubber tPBS ) PBSA3M P -system _. . Fiber-be d misttdimir-iator . Wettin g agent-typ e ium e suppressan t Foa m blanket s _.. _ Ai rpollutio n contro l devic e (APCD ) no

t liste d i n fdl & Ye s

Ye s Ye s Ye s Ve s ^Unless th e criteri a O f §63_W3(bM? ) are met) . Ye s -____ . .-

. Pressure dro p acros s ttie urtf t
_' .J.yJJ. ,',

•' ,' , ..,;'*', ; Velocity pressur

e a t -th e Me t o f th e contro l -syste m an d •pressur e dro p acros s th e uni t v Pressur e dro p acros s -the _ni t ..... . Pressure dro p acros s th e fiber-bed mis t eliminato r an d fiie pressure dro p acros s tb e upstrea m contro l device use d t o preven t plugging . Surfac e tensio n ...:..._........ . .... . :—.. . * . Foa m thidkness :'. :....

_.... . : : ___.__ . T o be -propose d toy th e sourc e fo r approva l b y Adrniriis - •rator . •••'*."•- * Uday... . 1/day.' " I/day. ' lAtey . Onc e -evei y -

4 -hours. * Onc e pe r Jjour. - 1

•Frequenc

y .ca n be decrease d accordin g t o -§63.34 3 (cK5)(ii ) an d (c)(6)(B ) o f siibpar t N . , TABL E 4.—SUMMA-R

Y O F REPORTIN G REQUIREMENTS Sectio n i n subpar t N 1 § 63.345(b )
_ §63.347<c)(1 )
_1 §63.347{cM_ ) .. . §63-347{d ) §63^47fe ) Descriptio n TJrnefcam e for sdbmWa l •,, i 

### M

# l i •Notificatio n o f constructio n o r reconstruction . •Irfltia i -notificatio n _*

. : —Notificsftio n -o

f -Whe n constructio n cammenced . —Wotificafionaf actua l -Startu p ...... . iNofflicaiio n o f -performanc e test .... . Notificatio n of

complianc

e statu s .. . §63.347(0 §63._47i(g T §63.347*1* 0 §63347 © _.„_.'.,. . Notificatio n o f performance testsesdtt s _ Complianc e statu s report s fo r rwyo r source s — •Complianc

e -statu s Teport

s tor are a sources —4nitia 1 nofificartio n -fo

r user s o fTV C bath s ...:_. . —-Nofificattio n o f compliance -statu s to r user s TV C baths . —Notificatio n <o

f proces s chang e :u

....;. : . of . •Depend s o n -whe n source -wa s constructed—see §63.345*{b){5) . J6G day s afte r th e effective date ! -' ••••* • —Withi n 3 0 day s d f odmmencemerf t fo r sources biflt

t afte r ef fective date , or wit h notificatio n required b y «§63_»4_(b ) * H buil t prio r t o effective date , r .. . —Withi n 3 0 days o

f startup. . ' •- ..'* . A t leas t ® 0 day s prio r to tes t WrtNi n 9 0 day s o f performance tes t ^ f a test.S s condudted ) o r •withi n 3 0 day s o

f compliance date! . •'.. lA%hi n S O day s o fperformanc e test . - 2 timesfyr. o r A timesiy r it •exoeedance

s wea r o r S

frequeste d by Administrator . Coo-plet e once/yr

an d -maintain'o n sta , o r 2 times/yr.-I f exceedance s occu r o r i frequeste d toy Administrator . . -r-Wiffii n 18 0 days o

f effectiv e data . '.;*. ' —"Withi n 3 0 day s o

f compliance date . ••;:•

•/•- , -r-Wlthfi n S

O dagr s O fprocess-change . ;

. • , 2 . Owner s o r

operator s o f

decorativ e chromiu melectroplatin g tank s "using a .trivalen t chromiu mproces s tha t incorporate s awettin g agen t ar e require donl y t o submi t

th e notification s require db y (

§ 63.347(a

) with-subsequen t notiBcafSonsiegmrediftir e proces s i s * change do r

replaced., .

. 3 . Existin g Source s performin g liar d- chromiu m-electroplatin g an dchromiu m anodizin g inus t

compl y wit hth e :.- * atandar dwithi n 2 year s afte r Januar y 25 . 1995

- Existin g source s performin g .••'•. decorative__rbmiu_ i electroplatin g mus t compl y wit hlh e standar dwithi n . 1 year__erJanuar y 25,1995.' " ;:>. ' - \.-.;'. ; «f c Us e momtoring , -reporSsng , _» d'•'•;*'

- recordkeepin g -requirement s fo r affecte d source s have bee n reduce dt o th e extan t -; possibl e whil e stil l allowin g th e EP A t o : detennirielhe'cwniplianc e status'o n a continuou s basis . Specia l consideratio n ha s bee n give n t o are asotirces . 5 . Tabl e 1 o f

subpar t N clarifie s whic h section s o f

th e -Gen-»a

i Prowisioiis,appl y t o source s subjec t t o subpar t

N an d whic hsection s d o not . " Th e rationale fo

r th e abov e change s i s discusse di n detail

in sectio n V o f

thi s preamble , whic h___unarizesth e -majo r comment s receive do n th e propose d rul e an dtii e EPA' s respons e t o tiiese comment- . Thi s sectio n als o discusse s major cc-n__ei_ts4__

t were xeceiyedbut.. . that di dno t resul t i n change s t o th e finalrule.*. - •••..'.-'.• . ',.'• . -.:J-J'yy. III . Summar y -oF-Envtronnreirta!, : • . - Energy , Cost , «n dEconomi c Impact s •."'• A. Environmentaland

Energy,•Impacts 3 Th e environmenta l aii dinergy:\--"*• • .-.•*.;:~ ~ impact s for

th e source s covere db y thi s "rulemaking ar e _nchange dfrom. .•,.*•.- . proposa l becaus e tiie base s o T th e MACT . standard s hav e no t

changed . J3J-JJ'JJJJ

'Ji B.Cost Imparts

.v c :;.:> ' !v * " v c Th e annualize dcos t

-o f contro l fcer QSB : : source s coveredb y thi s julemakia g ••. . remai n unchange dfrompivoposa l ; ')•• • 3, becaus e th e base s o f th e MAC T • '•

- ' standard s h av e no t

changed . Th e monitoring,-repprli-g . an d recordkeepin g burde mi n th e -__a l mil e . ha s decrease dfromth e propose d••••: •J.; ' requirements . i__emse . tSi e cost s -a f - . •; . ''mo_itoi-ag.__3^__i^:ai-l/'''''.>.;'''- r °'''.'. . recordkeepin g have als o decreased . Thie ' • * on-going , annua l oos aof.tir e Juaal

- .•.•• - monitering . M^orting , and';,;::.': . *. -•./•. ; ••••• • reoordkropingasa^ipaTOdinaliely 1WJQOQ . liour s forliar dchroimivu s etectnoplateTs.; .

. 29,00 0 hour s fordctaarativ e cfcromiuin.; . electroplater s usin g atrivalen t v..,. : chromiu mplatin g prbcess;:260;t30t ) ' . ' hosii s _O T otihe r deraaatir e chroinimn : if'. '

. electropiatfiis , en d70^300 im-qi s far ' : .: ' chromiu menodiaeis . Natjcmwiiie . .'-;': * ani__a l cost s -f c tb ^ a:ras3 e Categorie s < J y are-$3j5miilionforhardchrcaiuama* : >'•

- > elet_ropktei^v$&4B^300ifprd^oratiT O -... : : ; chibim-umeieptrbplateis^^ ^ •• >'.-•••.. trivalen t *r-}*iromi-*i*nf

i platin g process , $5J B : . miUio n for

othe r decor atave chromnam;...- . •electfopiaters,iandi$|J6millio n for «..-•;• . • • • chromiu manodizeEf

e Thes e -rnimber s •:'

• * • • V 

# I 1 

# I 1 

# 1 iP. 7

495 2 Federa l Registe r/ Vol . 60 , No . 1 6 /Wednesday , Januar y 25 , 199 5 / Rule s an dRegulatipn s
ar e reduce dfromth e nationwid e annua l cost s associate dwit hmonitoring , reporting , an drecordkeepin g i n th e propose drul e o f

$8; 6 millio n fo r

har d chromiu melectroplaters , $1. 6 millio n fo r decorativ e chromiu melectroplater s usin g atrivalen t

chromiu mplatin g process , $1 4 millio n fo r othe r decorativ e chromiu melectroplaters , ari d$3. 8 millio n fo r

chromiu manodizers . C, Economic Impacts Th e economi c impact s fo r th e source s covere db y thi s rulemakin g ar e unchange dfromproposa l becaus e th e basi s ofth e MAC T standard s hav e no t changed . IV . Publi c Participatio n - Prio r i e proposa l o f

th e chromiu m electroplatin g an danodizin g rule , meeting s ofth e Nationa l Ai r Pollutio n Contro l Technique s Advisor y Committe e (NAPCTAC ) wer e hel do n Januar y 3 0 an dNovembe r 19,1991 . Thes e meeting s wer e ope n t o th e public , an deac hattende e wa s give n a n opportunit y t o commen t o n th e draf

t rule . "•'':'• Th e propose drul e wa s publishe di n t i e Federa l Registe r

o n Decembe r

16 , 199 3 (5 8 F R65768) . Th e preambl e t o th e proposa l discusse dth e availabilit y o f . th e proposa l BI D (Chromiu m Electroplatin g NESHAP—Backgroun d Informatio n fo r

Propose dStandard s (Volum e I : EPA-453/R-93-030 aan d Volum e II : EPA-453/R-93-030b)) , whic hdescribe s i n detai l th e regulator y alternative s considere dan dth e impact s associate dwit hthos e alternatives . Publi c comment s wer e solicite da t th e tim e o f proposal , an dcopie s o f th e proposa l BI D wer e mad e availabl e t o intereste dparties . Th e publi c comment , perio dofficiall y ende do n Marc h14,1994 . A publi c hearin g wa s hel do n Januar y 20,1994 . I n addition , 6 2 commen t letter s wer e receive ddurin g th e publi c commen t , period ; 3lat e comment s werealso."..*>.; • received . Th e comment s wer e carefull y ; • considered , an dwher e determine dt o b e appropriat e b y th e Administrator;-^ * • change s wer e mad e i n th e final rule . *•••• > V . Significan t

Comment s an dResponse s 1

. Comment s o n th e propose drul e wer e receive dfromindustry , environmenta l groups , an dStat e ari dloca l regulator y agencies . A detaile ddisCussior i o f thes e comriient s an dresponse s ca n be . foun d; i n th e promulgatio n BI D (se e ADDRESSE S section) . Th e surnriiax y o f cotirihent s an d response s i n th e promulgatio n BI D ;•• ' serve s a s th e basi s fo r

th e revision s tha t hav e bee n mad e t o th e rul e betwee n proposa l an dpromulgatibri.. . . A. Selection of Source Categories and Pollutants To Be Regulated Si x commenter s sai dtha t maximu m cumulativ e potentia l rectifie r capacit y wa s a n inappropriat e paramete r fo r determinin g facilit y size . Source s ma y hav e exces s rectifie r

capacit y t o handl e atypica l applications , fo r safet y purposes , d r

fo r othe r reasons , bu t

ma y routinel y operat e a t

asignificantl y lowe r rectifie r output . Severa l commenter s urge dth e EP A t o conside r alternative s t o th e maximu mpotentia l rectifie r capacit y specified , suc ha s actua l annua l ampere-hou r

usage , raisin g th e ' maximu mpotentia l ampererhou r limi t fo r smal l source s t o 10 0 millio n amp-hr / yr , allowin g source s t o multipl y th e maximu mpotentia l rectifie r capacit y b y 0.7 5 t o accoun t

fo r oversizing , o r allowin g source s to-accep t Federally

enforceabl e limit s o n thei r rectifie r capacit y tha t

woul dallo w the mt o b e categorize da s "small " facilities . Althoug hth e cutof

f betwee n smal l an dlarg e har dchromiu melectroplatin g facilitie s ha s no t

bee n changed , th e EP A ha s include dtw o provision s i n th e final rul e t o allo w source s t o us e actua l ' *' rectifie r capacit y o r

t o limi t thei r potentia l rectifie r

capacity . Th e firs t provisio n i s availabl e t o facilitie s whos e productio n record s sho w tha t th e previou s annual , actua l rectifie r capacit y wa s les s tha n 6 0 millio n amp- , hr/yr . tinde r

thi s provision ; har d chromiu melectroplatin g facilitie s ma y determin e thei r

Siz e b y usin g actua l cumulativ e rectifie r

capacit y i n lie u o f th e maximu mpotentia l capacit y i f -. * " * nonresettable , amp-h r

meter s ar e iise d o n affecte dtanks . The . final rul e ( § 63.346(b)(12 ) an d§ 63.347(c)(l)(vi) ) require s tha t

record s o f

arnp-h r usag e b e kept . ••.'.

- Th e final rul e als o allow s al l source s performin g har dchromiu m electroplatin g t o establis hFederally ^ enforceabl e limit s o n thei r rectifie r capacit y t o allow'facilitie s t o compl y - • - wit hth e staridards*forsmall,.har'd•'•'..

- chromiu melectroplatin g tanks , eve n i f thos e facilitie s hav e potentia l rectifier ; v capacitie s tha t

excee dth e 6 0 million;; ; * • amp-hr/y r

cutoff . A Federally-•

- •'*•• : enforceabl e limi t

i s obtaine dthroug h th e titl e V permi t

tha t i s require db y *

. § 63.340(e ) o f

th e fina l rule ; Record s ar e require dir i adcordariCewith';( '•' < -'r'•'"'"'."'
_ §.63.346(b){12 ) an d§ 6_,347(c)(ijfyiii)to . documen t

that.;th e Federally-enforceabl e '- . limiti s bein g mamMned^'.;^.\v; £•'.' ! ,C'.. ' Th e filial rul e has-alsobee n clarifie d' •to stat e tha t

onl y th e rectifiers .V./*-*.-**^'-.;.1 associate dwit hhar dchromiu m• ; electroplatin g shoul db e use dt o '-;-- ' determin e maxiirium.cumulativ e ."'•-*••''••:• ; -potentia l rectifiercapacity* 3-. . >. V ;; • -'-j

- • • Comment s wer e receive dregardin g

othe r processe s conducte db y thi s sourc e categor y tha t

wer e no t

identifie d i n th e proces s description . One . commente r

pointe dou t

a.distinctio n N amon g decorativ e chromiuni . electroplatin g processes : Blac k chromiu man dwhit e chromium . Th e commente r

state dtha t

blac k "chromiu m electroplatin g i s mor e lik e har d- chromiu melectroplatin g i n term s o f proces s parameters , an dth e commente r recommende dtha t

blac k chromiu m electroplatin g b e subjec t t o th e sam e requirement s a s har dchromiu m, electroplatin g processes . Othe r commenter s note dtha t th e propose d• rul e di dno t

cove r ahar dchromiu m electroplatin g metho dtha t use s lowe r amperag e an dalonge r

electroplatin g tim e (les s amperag e pe r squar e foo t

tha n decc-rativ e electroplatin g process ) suc h tha t emission s ar e lower.' . . I n th e final rule , th e definition s o f t . har dchromiu melectroplating , decoratiy e chromiu melectroplating , an dchromiu manodizin g hav e bee n ' expanded , an dar e no w expresse di n term s o f process , parameter s a s wel l a s b y function : Regardles s o f wha t nam e a facilit y ha s assigne dt o it s process , fo r • th e purpose s o f

th e regulation , th e , proces s wil l b e regulate daccordin g t o it s function , bat hoperatin g parameters , an ddesire dplatin g characteristics. . Therefore , blac k

decorativ e chromiu m electroplater s woul dlikel y b e subjec t t o th e standard s fo r

har dchromium , electroplater s base do n platin g characteristics . Th e EP A wil l provid e State s with'additiona l guidanc e o n thes e type s o f applicabilit y issue s i n th e enablin g document. : . ' t Th e commenter s tha t

us e alow

amperag e electroplatin g proces s wer e concerne dtha t

suc haproces s woul d' . no t b e allowe db y th e rule , eve n thoug h. emission s fromthi s proces s ar e low . Althoug hth e proces s doe s diffe r fro m• othe f har dchromiu melectroplatin g ''. ,. processe s i n tha t

alowe r amperag e i s .. . used , th e rule.doe s no t preclud e th e use , * o f thi s proces s o r

an y othe r

techniqu e t o . . mee t th e applicabl e emissio n limitation;^.- ' Th e rul e doe s requir e tha t th e technique; ; b e demonstrate dthroug hperformance'•'.;•;.;_ , testin g conducte di n accordanc e with" ' th e tes t method s arid , procedures',;. : ; • ' . identifie di n th e fina l nile , an dthat",".* s .' ' complianc e monitorin g b e conducte dt o • determin e continuou s cbihpliance. . •:.*••,.-. , B, Selection of

MAff/GAC^JApprdac^STe n commenter s questione dthe," , ,,J',J. Agency's'decisioii't o regulat e ai*ea'SSh source s wit hMACT . A numbe r of . these,, . : commenter s disagree dtha t th e •'•'.'; ' ' ;.' : ' . chrorriiu mcompoun dtoxicit y dat a, alon e wa s justificatio n fo r regulatin g •"

; ">'

- 'Federa l Registe r ../Vel.,60,, JNo . _ 6 J. Wednesday.-Jaraiair y 25 , 1S9 5 / Rule s a_xl:Regt_la_i_ns . _95 3
are asource s a s stringentl y a s major V sources . Othe r

commehter s state. dtha t th e cost s t o are asource s .regulate dydf h' MAC T wa s tindul y burdensome , particularl y i f

thos e source s woul db e . subjec t to tid e V . Tw o commeritei s suggeste dtiiat

th e EP A appl y GAC T standard s t o smal l facilitie s t o allo w th e Agenc y t o focu s it s resource s o n facilitie s posin g th e greates t impact , o r establis hathreshol dbelo w whic h source s woul db e -subjec t t o GACT . Anotiie r commente r

questione dth e EPA' s decisio n t o appl y MAC T t o are a source s o n th e ground s tiiat th e Ac t doe s no t inten da-residual sfsl

k analysi s fcr are asources . Thi s Dommentermote dtha t i t wa s importan t

t o hay e separat e standard s io r

are asource s eve n i f

GACT wa s a s stringen t

a s MAC T t o preserv e th e inten t o f sectio n 112(d) . I n -determinin g whethe r

-t o appl y MACT-or-GACT t o theare asource s m thi s souro e category , (the EP A . considere dtthe toxicit y o f chromim n compound s .emitte d-fro

msuc hsource s an dth e availabilit y O

f controls . "The'EP

A ha s -coiidhide dtha t

MAC T shoul db e applie dl o all-areaisoui-ce s mal l sourc e categories . Th e basi s fo

r «M s "decisio n i s th e toxicit y of-ohi-oniiuni oorn p ounds . Th e potenc y o f

hexavalen t

'Chromium , whici i i s (categorize das-a'Grou p A carcinogen , i s •wel

l -documented , an da t leas t Ihree-epidemiologica l studie s hav e - show n astron g -associatio n betwee n lun g cance r

-an doccupationa l exposure s t o mixture s o f

trivalen t an dhexavalen t chromium . Therefore , th e Agenc y ha s conclude d(thd

t _ H <chromi*o

m compound s emitte dt o th e ai r -shoul db e consitdefed^oxk

- unti l adequat e dat aar e availabl e t o determin e otherwise . I n selectin g MAlC

T ovo r GAC T fo r

al l are asources , (h e EPA als o -evaluate dth e availabilit y o f

contro l technologie s am

d th e costofconrplianc e for-are asources . Th e contro l technologie s tha t for mth e base s fo r MACT .are-widel y available ; Althoug h<

§ 312(dttSi ) <o

f th e Ac t doe s allo w a n alternativ e standar dfor are a sources , th e _FA interpret s tins paragrap hasautborizmgtth e A-h-inististtor-to-estafefehiGAC T •',. standar dfor

.areasoin-pe s whe n th e impositio n o f

MAC T i s determine dt o b e unreasonable . Fo r

th e souro e categorie s subjectt o -subpartN.th e Agenc y . consider s i t

seasonabl e t o appl y MAC T t o are asources . 

### C.Selec^ofJMA^for^dS

JS-r-y ChronmimWectro^atingXaiiks : 1 . Selectio n o f

the^^-CTFleo-r''. : ) Fou r commenter s suggeste dtha t _he . .'.

- MAC T floo r

fo r ne w har dchromiun i ': . electroplatin g tanksshoulr i b e base do n th e usen f afiber-r^ dmis t

e_xnl*nata

r ....* (FBME

) becaus e thi s i s th e bes t technolog y I n iise . Th e EP A ha s gathere dadditiona l informatio n sinc e proposa l i n respons e t o publi c comment s received . Base do n thi s infonnation, . tota l o f fiv e facilitie s ar e know n t o b e usin g FBM E t o contro l chromiu memission s fromaffecte dhar d chromiu melectroplatin g an d.chromiu m anodizin g tanks . Thes e five facilitie s represent different size s _ f har d chromiu melectroplatin g an dchromiu m anodizin g operations . Emissio n tes t

dat awer e obtaine dfrom fou r o f th e fiv^ facilitie s usin g FBM E (se e Ite mNo . TV-B-0 1 o f Docke t A-T88

- 02) . Th e emissio n tes t

dat aavailabl e ' fromon e facility wer e incomplet e an d coul dno t b e use dt o asses s th e performanc e o

f fiber-bedunits . Th e tes t result s fromth e othe r

facilitie s wer e adequat e t o evaluat e th e performanc e o f FBME . .H o weyer , afte r

athoroug h evaluation , i t

wa s determine dtha t

th e limite ddat aar e no t

sufficien t t o establis ha n omissio n 1i*mi t -whichmus t b e me t on acontinuou s long-ter mbasis . I n on e case , th e dat awer e inadequat e becaus e only asingl e travers e wa s mad e whe n tw o shoul dhav e bee n performed . I n th e othe r

cases , th e quantit y o f emission s capture ddurin g samplin g wa s to o smal l i o .meet

Agenc y guideline s o n minimu mquantificatio n levels . Thes e -data , therefore. , mus t b e treate da s qualitativ e rathe r tha n quantitativ e results an dma y not.b e use d t o establis hachievabl e emissio n limits . Base do n thi s qualitativ e assessment , i t . appear s -tha

t FBME offe

r excellen t ^ contro l potential . I n e«ahiatin g contro l te-__aalbgies , th e Agenc y also'mus t

conside r th e sustainabilit y o f

*_hyperformanc e level . Th e ER A i s concerne dwit h.the long

ter mperformanc e of

thes e systena s . becaus e o f

ih e tendenc y ofth e .fibe

r bed s t o plug . I n othe r

contexts , mos t

vendor s o f FBME system s d o no t

j-ecominen d thei r us e a s primar y pollutio n contro l systems . Rather , the y recommen dtha t coars e prefilterin g b e provide dupstrea m of th e -fibe r bed s t o preven t

©lugging . - Th e prefilterin g device s rang e fro ma serie s o f mes hpad s to acomplet e ..•.. * packed-be dscrubbe r

O-oit. A t present, ; ther e ar e JI O long-ten m.dat aavailabl e t o asses s an y actua l deterioratio n o r opesnatAona

l problem s associate dwit h •'.FBME . Fiber-be d-mist

eliminator s to control-hromku n electroplatin g an d. anodi__^_uik s hav e onl y zrecentil y bee n • installedfa s aJesui t

-o f loca l ai r distric t J requirements; therefore,

- i t i s unlikel y tha t an y long-itemn/dataai e available . • Becaus e o f

th e uncent-kilie s infoot h th e measuredFBM E perforinamoederta . . •: " an dth e potentia l long-ite m-va-nabi-lil y .. .

. of th e syste mperlotiMaance,_he J*;>..-.* • •* . .. . Administrato r

canno t a t thi s tiine • determin e tha t

amor e stringen t emissio n limi t

coul db e achieve dbased o n theapplicatio n o

f FBM E technolog y for ne w har dchromiu mplatin g o r chromiu manodizin g operations . Therefore , th e final MAC T peiformano e leve l o f me w har d•chromium electroplatin g an dchromiu manodizin g tank s i s unchange dfromth e proposal . However , th e limite ddata/d o sugges t tha t FEME-system s ca n achiev e th e emissio n limit s establishe dfor composit e mesh-padsystem s an dfume suppressants . Becaus e thi6-standar di s a performanc e standard , th e us e o f a specifi c technolog y i s no t mandatory ; therefore , an y syste mtha t -meets o r exceed s th e leqirire dperformanc e leve l ma y b e used . - . * • I n orde r t o facilitat e th e us e o f

FBM E t o achiev e complianc e wit hth e standard , anonitonin g -provision s hav e bee u include di n th e final rul e fo r us e wit hFEME . i(Se

e discussio n i n sectio h V__. ) Th e test-method s i n th e propose d riil e ar e suitabl e fo r

demonstratin g complianc e wit hth e -standardregardles s of th e contro l technolog y employed . 2 . Regulatory Alternative s Considere d. Eigh t commenter s -suggestedtha t th e EP A -wa s to o limitin g i n th e "regulator y alternative s for

har dchromiu m electroplatin g operations . Thes e commenter s 'believe dtha t th e ER A shoul dallo w source s i n thi s subcategory t o -us e fum e suppressant s t o compl y * wit hth e standard , instea d©flockin g souioe s int o acontro l technology , suc h a s packedrbe dscruhbers . Fou r ofth e commenter s als o propose dtha t th e EPA allo w aie w an dexistin g har dchromiu m electroplatin g operation s th e optio n <m f meetin g th e sam e surfac e tensio n limi t • allowe dfo

r -decorativ e *r___mi*i_

_-' ' electroplatin g operation s tha t iais e a wettin g agent-typ e fume suppressant. " Th e EP A ha s selecte da n -emissk m• limi t forma t t o provid e source s &vrt

hth e - flexibility to choos e th e -enaissiof l ..; . , contro l strateg y ibeSt

suite dt qthei r

. v ^ . facility . Th e .regulatio n onl y /require s tha t an y strateg y selecte dmee t th e .-•• • . emissio n limit s se t

ou t i n th e rule . A s such , har d-chromiu melectroplatin g * source s ca n us e fume suppressant s to . achiev e complianc e (wit

hth e statadardj . a s ionga s initialoompHancetestin g • demoristfate s tha t

the-enaissio hlimit ' i • ; stipulated-i n the-standai disHsein g ?.';:J acMeMed * As*dis-__5$ed___rinitte : .'-;:'.W.- ; preamble , however , -on-igain g '3JS'ij)y J

- compliance-rtenitoringisaaonteol

- '•.;.•"'.,•.-.'. techMque-specafici ; As___h,*tSffi-OOTi»er' ; • o r operato r o f an y sou-ro e tha t

uses'a"'*;.',; ;
. • fume suppressantt o -nampily._at hwi: • '•-" • eriiissio n limitatifflnshalllmonitor': ;./'.' • • • :
. surfac e tensibn o r

foa mblanke t * : >t ' 

### '1; ; 

# I ii i

vf l


### '-H 

# ' JP. 9

495 4 Federa l Registe r/ Vol . 60 , No . 1 6 7 Wednesday, ; January " 25;''1905 ' / ;Rule s ari dRegulationsj,,,., ,

i 

# r thickness , a s appropriate , t o demonstrat e continuou s compliance . 3 Selectio n o

f MACT Severa l commenter s remarke dtha t th e standar dfo

r existin g har dchromiu m electroplater s i s inappropriate . Nin e commenter s state dtiiat

th e standar d wa s to o stringen t

fo r large , har d chromiu melectroplaters ; small , har d chromiu melectroplaters ; or both . Th e argument s agains t

regulating existin g har dchromiu melectroplater s a s stringentl y a s tha t

propose dwer e primaril y tha t

th e cost s associate dwith • th e standard ; wer e undul y burdensom e an ddi dno t

justif y th e resulting environmenta l benefit , an dth e emissio n concentratio n limit s specifie di n th e propose drul e wer e no t

consistentl y achievabl e usin g th e contro l device s upo n whic hth e standard s ar e based . Fiv e commenters , o n th e othe r hand , indicate dtha t

th e standar dfo

r small , har dchromiu melectroplater s wa s to o lenient . Th e argument s presente db y th e commenter s wh o supporte damor e stringen t standar dfor

small , har d chromiu melectroplater s wer e tha t th e residual risk

associate dwithemission s fromthes e source s warrante dmor e "stringen t controls , th e Agency' s interpretatio n of

th e MAC T floor wa s flawe d(i.e. ; shoul db e base do n a straigh t average ; no t

amedian) ; an dth e contro l efficienc y fo

r packed-be d scrubber s i s overstated , a s ar e th e cos t impact s for

astandar dbase do n th e us e of composit e mesh-pa dsystems . I n settin g a n emissio n standard , th e Ac t direct s th e Administrato r t o tak e int o accoun t

costs, * nonai r

qualit y healt h an denvironmenta l impacts , an denerg y requirements . T o fulfill thi s requiremen t fo r existin g har dchromiu m electroplatin g sources , th e EP A evaluate dth e cost , impact , an dbenefi t of astandar dbase do n th e us e of a packed-be dscrubber

a s wel l a s a standar dbase do n th e us e o f a composit e mesh-pa dsystem . Th e • Agency' s estimat e ofth e incrementa l cos t effectivenes s o

f requirin g al l . source s t o mee t

astandar dbasedo n composit e mesh-pad,system s compare d t o on e base dor

i packed-be dscrubber s i s approximately$3.7millionpe r /.*-.••<• ' Megagramof

chromiu mcontrolle d($ / Mg) for larg e source s an d$10. 7 million / M g fo r smal l sources. ' , - • . ; ' :•• • Base dor

i th e EPA' s economic : •analysis, astandar dbase do n th e us e of composit e riieshrpadsystem s b y al l -

. source s woul dno t

cause-advers e *.:"; . economi c effect s br

i larg e source s tha t

* currentl y Use packed-be dscrubbers . Du e ]t o economie s of

scale r th e economic " impact s o n large r

facilitie s ar e u ; ; t

-yy consistentlyles s tha n thos e o n smal l ,: • facilities . A s aresult , large r facilitie s : will hav e agreate r

abilit y t o pas s o n contro l costs . Althoug hthes e cost s may see mhigh , th e EP

A believe s th e toxicit y o f chromiu mjustifie s thes e costs . I n consideratio n of

th e potentia l advers e impact s t o smal l sources , th e final, rul e requires ales s stringen t

standar dfo

r . smal l source s tha n larg e sources , whic h i s base do n th e us e o

f packed-be d scrubber s rathe r

tha n composit e mesh

pa dsystems . [Se e Chapte r 5 ofth e Ne w Technolog y Documen t

("Technica l Assessmen t

o f Ne w Emissio n Contro l Technologie s Use di n th e Har d. . Chromiu mElectroplatin g Industry; " EPA-453/R-93-031 ) fo

r adetaile d discussio n of

EPA' s economi c analysi s fo r thes e systems. ] . •'•-.-'•' Th e EP A consider s th e emissio n limitatio n basedo n th e us e of composit e mesh-pa dsystem s t o b e representative o f an dconsistentl y achievabl e wit h well-maintaine dunits . N o dat awer e submitte dt o suppor t

a n alternat e emissio n limitation . (Fo r

furthe r discussio n of

th e emissio n limitations,, ; se e sectio n V.F

4) Regardin g th e comment s tha t th e propose dstandar dfo

r small , har d electroplater s wa s to o lenient , th e ' Agenc y believe s tha t

th e MAC T floor

i s properl y basedor

i th e us e of

packed : be d scrubber s fo

r thi s sourc e category . Th e EP A promulgate dafinal rul e o n Jun e 6,.. . 199 4 (5 7 F

R29196 ) tha t

present s th e . Agency' s interpretatio n of sectio n 112(d)(A ) ofth e Ac t

regardin g th e basi s fo r th e MACT floor , Unde r

thi s , ,. * interpretatiori , th e Agenc y consider s th e . emissio n limitation s achieve db y th e bes t performin g 1 2 percen t

of existin g source s an darrive s a t

th e MACT floo r b y selectin g th e media n o f th e values , rathe r tha n astraigh t

average . Thi s interpretatio n wa s followe di n establishin g th e MACT floo r fo r small , har dchromiu melectroplaters . Th e Agenc y consider s an y discussio n ofthe 1 ris k remaining fromsmall , har d. ; chromiu melectroplater s t o b e > 3 ; prematur e at

thi s time/

. • '" ~ : I n accordanc e wit hsectio n 112(f ) of ; th e Act , i f asignifican t

residua l risk

"--'J. fromsmall , har dchromium, ; '-'•.'-;.-* ' JJJ'J [ : electroplatin g operation s regulate dby-' : MACT i s found , th e Agenc y i s require d t o promulgat e standard s t o mitigat e tha t risk/The EP

A recognizes th e potentia l P hazard s o f

chromiu memission s from-•'

- * smal l source s ari dha s chose n t o regulat e .' ; are asource s withMACT'rathe r th_a;-jfj'

- GACT . Th e EPA^alsb consider s it s cos t * an dimpac t

analysi s fo

r sriiall ; har d.*-;

• ">.-" •'

- chromiu melectroplater s t o b e sourid . ' Th e EP A estimate dretrofit cost s base d*

; br i infonnatio n fromvendor s who : 3 : V ; suppl y th e equipmen t

t o th e Industry,; : *

: an dtherefor e estimate s aire*.-••;• y: •'>?* . \' . •*(.*'• • represeritativ e o f

th e contro l costs'; . ".'

" incurre db y affecte dsources . Th e EP A • consider s th e efficienc y assigne dt o packed-be dscrubber s fo

r purpose s o f calculatin g impact s t o b e represeritative q f tha t achieve db y well-maintaine dan d well-operate dunit s controllin g J ' '•'' " emission s fromhar dchromiu m, * .,•.. , • electroplatin g tanks . A s wit hcomment s o n th e emissio n limi t

basedo n ; composit e mesh-pa dsystems , n o dat a supportin g alternat e einissio n limit s for astandar dbase do n packed-be d scrubber s wer e submitted . •' . '•"' . D. Selection of

MACT for Decorative Chromium Electroplating and : ' ** • . Chromium Anodizing Tanks ••••.•. 1 . Regulatio n ofth e Trivalen t Chromiu m Platin g Proces s ... . Eleve n commenter s disagree dtha t ; decorativ e chromiu melectroplatin g tank s tha t us e atrivalen t

chromiu m proces s shoul db e regulatedb y the . propose drule . Man y ofth e commenter s fel t tha t th e EP A ha dinsufficien t

dat at o conclud e tha t

th e risk associate dwit h thi s proces s warrante dregulation o f .- . thos e sources . Fou r

commenter s foun d fault wit hth e EPA' s Supportin g dat a- , an dnote dtha t

th e leve l of

hexavalen t

• ' chromiu mi n atrivalen t

chromiu mbath. . tha t correspond s t o th e EPA' s estimat e of hexavalen t

emission s fro

mtha t bat h woul dfa r excee dtha t

leve l of hexavalen t

chromiu mtha t

woul d'.

- desuroy th e trivalen t

bath . Thre e othe r commenter s state dtha t

us e o f the. . trivalent.chromiu mproces s shoul dbe . encourage db y th e EPA , becaus e ' • trivalen t processe s resul t

i n les s tota l chromiu mi n proces s wastewate r an d* les s sludg e generation . On e of th e commenter s suggeste dregulating' trivalen t chromiu melectroplatin g , processe s unde r

GAC T t o eliminate

som e ofth e burde n associate dwit hth e reporting, recordkeeping, an d• -v . monitorin g requirerhents specifie di n th e propose dnile . •- . -.'''J; •••-."; ''•''. Twelv e comirienter s resporide dt o th e . EPA' s request

fo r commen t

o n whether.-.-,; ' th e trivalen t

chromiu melectroplatin g -. ' proces s shoul db e require dfor new, ", . '• ; sources/Th e majorit

y o f thes e J "•.'. commenter s di dno t

thin k tha t thi s - •: • shoul db e arequiremeri t

becaus e th e ; , proces s wa s no t

technicall y feasibl e for.': . th e ful l rang e o f

decorativ e chromiu m> -. - electroplatiri g operations.Two , ,' ; . ;•:.'. ' commenter s pointe dout'inconsistencies' ' i n th e EPA '

s reasoninjg ; th e EP

A ca n ?

- ' • onl y requir e trivalentxhromiuiri.bath s if , i t recbgriize s th e differenc e i n toxicit y betwee n hexavalen t

tm dtrivalen t

!v-' , , » chromiuni. ' ; : ;A']J

. ?• • . • ^'". * .•'' . '*, . ''.. * Th e EJP A has ; reconsidere dihe ] \' v ;'". ' technica l basi s fo

r '{regulating tank s •'•".•.'•';''Federa l Registe r / Vol . 60 , No . 1 6 /

Wednesday , Januar y 25 , 199 5 / Rule s ari dRegulation s 495 5 P.1 0

usin g th e trivalen t

chromiu m electroplatin g proces s an dth e feasibility o f requiring suc haproces s fo r ne w sources . Durin g developmen t ofth e propose dstandards , th e EP A evaluate d th e trivalen t

chromiu melectroplatin g proces s a s apollutio n preventio n alternative . Chromi c aci di s no t presen t i n th e platin g solutio n i n th e trivalen t chromiu mprocesses , an dhexavalen t chromiu mi s regarde da s abat h contaminan t

i n thes e processes . I n addition , al l of

th e trivalen t

chromiu m platin g solution s wit hwhic hEP A i s familiar contai n awettin g agent

a s a n inheren t bat hcomponent . Tha t

is , th e wettin g agen t

i s par t o f th e platin g solutio n purchase dfromth e vendor ; i t i s no t adde dseparatel y b y th e en duser . Withatrivalen t

chromiu mplating ' process , th e potentia l emission s o f chromiu mi n an y for

mar e muc hlowe r , becaus e th e concentratio n of tota l chromiu mi n trivalen t

chromiu mbath s i s approximatel y four

time s lower

tha n th e tota l chromiu mconcentratio n i n chromi c aci dbaths . Trivalen t chromiu m processe s greatl y reduc e emission s of th e mos t poten t for mof chromiu m (hexavalent) , an dsignificantl y lowe r emission s o

f chromiu mi n othe r

forms . I n additio n t o reductio n o f ai r emissions.th e us e o

f trivalen t chromiu mprocesse s result s i n lowe r chromiu mconcentration s i n proces s wastewater s and , consequently , reduce s th e amoun t

o f sludg e generated . Base d o n asourc e tes t

conducte db y th e EPA , tota l chromiu memission s from a trivalen t chromiu mbat har e approximatel y 9 9 percen t les s tha n thos e from atraditional , uncontrolle d decorativ e hexavalen t

chromiu mbath . Hexavalen t

chromiu memission s from a trivalen t chromiu mbat hwer e foun dt o b e approximatel y equivalen t t o thos e emitte dfrom adecorativ e hexavalen t chromiu mbat hcontrolle db y addin g a wettin g agent . Althoug hchroriiiu memission s frorii th e trivaleri t

chromiu mproces s wer e low , th e EP

A ha dno t

anticipate dth e presenc e of

hexavalen t

chromiu mi n . emission s fromthejtrivaleri t electroplatin g proces s no r theleve l of

- tota l chromiun i emissions . Give n tha t th e Ac t list s al l form s o

f chromiu mo n th e HA P fist, th e EP

A considere dthe . . trivaleri t chromiu melectroplatin g proces s a s asourc e o f

chromiu m emission s a s wel l a s a n emissio n contro l alternativ e fo r

th e chromi c aci d• electroplatin g process . Base do n th e •-•••- ' emissio n tes t

results, adecorativ e hexavalen t

chromiu mbat hcontrolle d b y addin g awettin g agen t ha d equivalen t

hexavalen t

chromiu m•;-..-••

• emission s an dles s tota l chroriiiu m- emission s tha n atrivaleri t chromium , y_' platin g bath . (A s previousl y stated , for

trivalen t chromiun i baths , th e wettin g agen t i s inheren t

t o th e solution ; i t

doe s no t nee dt o b e adde db y th e user. ) In addition , th e trivalen t

chromiu m proces s ma

y no t b e technicall y feasibl e fo r al l decorativ e chromiu m electroplatin g applications . Therefore , th e final rul e doe s no t

requir e th e us e o f atrivalen t

chromiu melectroplatin g proces s fo r eithe r existin g o r

ne w decorativ e chromiu melectroplatin g tanks . , • * Th e EP A ha s decide dt o regulate source s tha t

us e trivalen t

chromiu m bath s mth e final rule . It

i s no t clear whethe r th e EP A dat aaccuratel y reflec t emission s fromth e trivalen t chromiu m electroplatin g process , o r if th e analytica l integrit y o f

th e dat ai s suspect . I n ligh t

o f th e ambiguit y o

f th e ai r emission s data , an dgive n th e othe r environmenta l benefit s fromth e trivalen t chromiu mprocess , thi

e EP A ha s decide dt o regulate thes e bath s differentl y fromhexavalen t chromiu m electroplatin g baths . Th e final rul e requires user s of trivalen t chromiu mbath s t o silbmi t a n initia l notificatio n an danotificatio n of complianc e statu s certifyin g tha t a trivalen t chromiu mbat hi s bein g use d an didentifyin g th e bat hcomponent s (specifically , th e wettin g agent) . - . Subsequen t

notification s ar e required onl y if th e proces s i s changed , o r i f a ne w trivalen t

chromiu mproces s i s introduced . User s o f

trivalent . chromiu m hath s mus t

als o kee p record s o f

bath chemical s purchase ds o th e EP A can b e assure dtha t

th e bat hcontain s awettin g agent . Thes e notificatio n an d recordkeepin g requirements appl y onl y t o thos e trivaleri t

chromiu mbath s tha t incorporat e awettin g agent . Th e EPA' • * ha s evaluate dbath s wit hthi s characteristi c an dfouri dthe mt o hav e th e environmenta l benefit s discusse d above . Althoug hsuc hbath s ar e no t know n t o exist , th e EPA ha s chosent o regulat e trivalen t

chromiu mbath s tha t d o no t incorporat e awettin g agen t ir i the

sam e manne r

a s decorativ e chromiu m bath s usin g achromi c aci dsolution/Th e EP A believe s tha t

thi s wil l discourag e th e us e o f atrivalen t

chromiu mbat h tha t doe s no t hav e awettin g agen t

a s an "•• • inheren t bat hcomponent ; 2 . Selectio n of

MAC T .fo

r Decorativ e v Chromiui n Electroplatin g Tank s .Thre e commenter s .suggeste dtha t the:* : propose dernissio n limi t

d f 0.00 3 nig /

-n ; dsc mfo r decorativ e chromiu m,*•* y y 3.J-- electroplatei s usin g hexavalen t • J J -*-.* '.'•.>.*,*-•• ' chromiu mbath s wa s to o stringent . Tw o * commenter s di drio t

thin k tha t asource , usin g eithe r

afume suppressan t

o r a•••'••<•?- ' fum e suppressan t

in'Conjunctio n Wit

ha; ; packedTbe dscrubber coul dconsistently , mee t alimi t of 0.00 3 mg/dscm ; *

. I n response f

o th e comment s receive d at proposal , th e EP

A ha s reconsidere d th e basi s fo

r th e emissio n limi t

o f 0.00 3 mg/dsc mfo

r decorativ e chromiu m' . electroplatin g an dchromiu manodizin g . tanks . A s state di n th e preambl e t o th e propose drule , thi s emissio n limi t was . base do n test s of

adecorativ e chromiu m electroplatin g tan k

i n whic ha combinatio n wettin g agent/foar hblanke t wa s use dt o contro l emissions . Test s ha dals o bee n conducte do n adecorativ e chromiu melectroplatin g tan k usin g onl y afoa mblanke t fo r control . Th e chromiu memissio n dat afp r al l type s b

f fume suppressant s range dfrom0.00 1 t o 0.00 7 mg/dscm , wit hth e wettingagent/

- foa mblanke t

dat ararigin g from0.00 1 t o 0.00 3 mg/dsc man dth e foa mblanke t dat arangin g from0.00 3 f o 0.00 7 mg / dscm . I n evaluatin g whethe r th e propose demissio n limi t

o f 0.00 3 mg / dsc mshoul db e revisedi n th e final rule , th e EP A reassesse dth e effec

t th e tes t !" . method s ma

y hav e ha do n th e emissio n dat aobtained . Th e analytica l metho d use dfo r th e fum e suppressan t

tes t wa s • colorimetri c spectroscopy . A s Thor e efficient contro l technologie s (suc ha s composit e mesh-pa dsystems ) wer e ' • developed , amor e sensitiv e analytica l metho dwa s neede dt o measur e th e lowe r concentration s o

f chromiu mbein g emitted . Therefore , th e mor e sensitiv e • io n chromatograph y metho dwa s use d i n th e late r

phase s o f emissio n testin g • fo r thes e standard s involvin g add-ori contro l devices . '*'.... ' By usin g th e les s sensitiv e colorimetri c analytica l method , i t i s , " unclea r whethe r th e variatio n foun d betwee n th e tw o type s of fum e suppressant s wa s due.t o aperformanc e differenc e i n th e fume Suppressant s o r * '

. wa s ar i artifac t o f th e analytica l metho d used . Th e fact

tha t ther e i s overlap . ' betwee n th e foa

mblanke t an dwettin g agent/foarn blanke t

dat afurther

. : •; ' '-_• • • ' indicate s tha t

thi s coul db e th e case;/;*''•* . •"] (Bot hwer e abl e t o achiev e alimit : 6 f •.-/";• • • • ; 0.003-riig/dscri i i n on e instance.) ' '',V:'; . Therefore , th e EP

A ha s conclude dtha t : th e emissio n limi t

i n th e final'rule. •

. < - shoul db e base do n tiie perforrhanc e o f ',.-•• bot hfoa mblanket s an dwettin g agents' . • Accordirigly , th e emissio n limi t selecte d fo r decorativ e chromiu melectroplatin g • an dchromiu manodizin g tank s irithe"' • final rul e i s 0.0 1 mg/dscm . This"*'

- •;*;?!••. '. ' .-,eiriissidn-limi t

was'selecte db y applyin g {"• asafet y facto r t o th e highes t

rne&suxed., ' • dat apoin t

(&.007 . mg/dscm ) tp accoun t •fo r variation s ir

i samplin g an danalytical' . : procedures.*!- , selectio n of this^-'y( V V

? "emissio n limi t

i s consisten t

witii-thej'V l "•

* .methodolog y used : t o selec t emission,-- ? j-

- '••'•

' .' • limit s base do nothe r

control '-' • •

• ••"*:•'-•*,'>.

- •• " -. : J.! '



# fc

•'•a 

# 1 J ; . 

# 1- 1 :,:, •P.1 1

495 6 ; Fedjera

j Registe r

7 Vol: ' 60,

JJQai J 1 6 *7<?Wednes^y^^^tiar y 25 , 199 5 ;/ ; Ruies-an dRejgulatiori s

£'*•* ; techniques , a s i s furthe r discusse di n sectio n V.F . , .'•*.;.•.*.;-**-.-, r
. ' • • J:_~'';y.Jf- •--:-'••<• 3. Selectio n o f

MAC T Hoor/MAC T fo r Chromiu mAnodizin g Tank s '*.'- . Thre e commenter s questione dth e MAC T floo r

establishe db y th e EP A fo r source s performin g chromiu m•-.'_'•••' anodizing . Th e coftimenter s state dtha t i t di dno t appea r tha t th e EP A ha d sufficien t

dat at o perfor maMAC T floo r analysi s fo r

thes e sources . Commenter s state dtha t

chromiu manodizer s an d decorativ e chromiu melectroplater s tha t canno t us e fum e suppressant s shoul db e considere dseparately , an dth e MAC T floo r fo r suc hsource s shoul db e base d o n packed-be dscrubbers . Also, . • accordin g t o si x commenters , th e . . standai dfo r

chromiu manodizin g tank s i s no t achievabl e i n al l situations , ••- . especiall y whe n a n add-o n contro l devic e i s use di n lie u o f fum e suppressants . On e commente r state d tha t unles s th e standar dfor chromium' . anodizin g tank s controlle dwit hadd-o n contro l device s i s se t

a t 0.0 3 mg/dscm , source s wil l hav e t o us e a n add-o n contro l devic e followe db y afiber-bed mis t eliminato r

t o achiev e th e emissio n limit s .

. Th e MAC T floor

fo r chromiu m anodizin g source s wa s base do n . informatio n availabl e t o th e EP A or i th e sourc e category . Informatio n o n th e industr y wa s obtaine dthroug hsurve y • questionnaire s t o bot hindustr y - :* • ; ' ' representative s an dcontro l syste m.;:-: . vendors , sit e visi t

reports , an davailabl e emissio n data . Althoug hinformatio n * wa s no t availabl e fromal l source s i n th e category.th e EP A believe s th e * ; informatio n wa s sufficien t t o satisf y th e requirerhentspf

sectio n 112(d)(3 ) ofth e Act . Th e surve y responses , whic h. include dsom e aerospac e facilities,.'

- indicate dtha t

fum e suppressant s wer e th e contro l techniqu e use d\ predominantl y i n th e industry . Sectio n 112(d)(3 ) o f

th e Ac t prohibit s th e EP A fro mestablishin g astandar dtha t i s any . - les s stringen t

tha n th e MAC T floo r

for.,

, acategor y o r

subcategor y o f

sources . N o technica l reason wa s provide db y .*• > industry ; rior

i s on e know n t o th e EPA , fo r creatin g aseparat e subcategor y o f . source s fo r

whic hfum e suppressant s ar e ho t technicall y feasible . Thus , al l new . / an dexistin g source s performing :38ijyJ-

- chrprriiu manodizin g mus t meet.either:••.•; • ai i emissio n limitpfp.0 1 mg/dsc mo r C T maintai n th e surfac e tensio n specifie d-:-* * ir i th e rule . Th e EP A believe s tiiat the ' -.-• , revisedchromiu memissio n timit o f 0.0 1 mg/dsc mfo r

chromiu manodizin g tank s : i n th e final rul e i s achievabl e b y source s usin g add-or i control-techriplogy£**? H •?. •':•.?•' Altematiyely.theEPAvbelieve s tha t th e c6riipli.-a(%''time_^e'f6r.'^st-3g^..'-'''^r:':' : source s performingchromiumf;;-': , anodizin g i n the-fina l rul e ( 2 years ) wil l

. allo w thes e source s .t o further'.. ; %' i ...*- . investigat e th e feasibility , o f usin g fum e suppressants.---'*" . •>•.•,•'.•:•'••!•..•••••,. * **..,•• • E.SelertionofitieFoTmqtpfthe Standard .•"'"'.'. . Seve n commenter s state dtha t the ' • . . forma t ofth e standar dshoul db e expresse da s aproces s emissio n rat e i n milligram s o f

chromiu memitte dpe r , amp-hou r

o f operatio n (mg/amp-hr) , whic hwoul db e consisten t wit h•.-• . CaUfomi arules , rathe r

tha n a s a n emissio n concentratio n (mg/dscm) . Accordin g toth e commenters , concentration-baSe dstandard s ar e flawedbecaus e the y ca n b e circumvente db y dilution , concentratio n ca n var y fromsyste mt o system , an d sourc e tes t

dat aindicat e tha t

outle t concentration s var y widel y for differeri t inle t conditions. . Severa l commenter s als o pointe dou t

tha t emission s shoul d b e correlate dt o productio n rate s becaus e chromiu memissions'increas e proportionatel y wit hincrease dcurrent . Tw o othe r

commenter s suggeste dtha t . th e final; rul e specif

y acceptabl e proces s emissio n rate s t o avoi da n equivalenc y evaluation . • : ' -...... ' Base do n th e Agency' s "evaluation , th e availabl e tes t

dat aindicat e tha t

a proces s emissio n rat e forma t wil l no t ensur e consisten t

complianc e wit hth e contro l leve l require db y th e standard . Th e concentratio n dat acollecte db y th e EP A fo r th e composit e mesh-pa dan d packed-be dscrubbe r

system s d o no t overlap ; tha t

is , composit e mesh-pa d system s consistently , outperfor m' packed-be dscrubbers/Theproces s ..- • emissio n rat e data , o n th e othe r han dd o overlap ; eve n thoug hcomposit e mesh

pa dsystem s ar e asuperio r technolog y t o packed-be dscrubbers , bot hsometime s achiev e th e sam e proces s emissio n rate . * Thi s occur s becaus e tw o source s ca n b e usin g th e sam e contro l technolog y an d achievin g th e sam e outle t emission s : • ••

' concentration , bu t

th e on e wit hth e highe r curren t loadin g "wil l hav e a ; lower , proces s emissio n rate . Commenter s conten dtha t

thi s i s reasonabl e becaus e th e productio n rate , a s measure di n I ampere-hours , i s relate dt o emissions.

- However ; th e amoun t

o f current , •_&••>••••}':-

. supplie dt o th e tan k

i s ari-indicato r

o f th e arriouh t

o f uncoritrblle demissiqii s : fromth e tank , no t

th e controlle d;¥,-- • A :

- emissio n leve l fromth e tank ; Becaus e o f th e difference s i n proces s emissio n rate base dan dcoriceritfatibri-base d•- « -'Jri- 3 3 standards , and-th e soiut^sp^ecifi c ;\4-';-".- . t natur e of^proces s ehiissidh : rateV« , 'J;n;^:

- • standards , th e EPArcannot/Cit e a n • * : f e ' • • equivalen t

proces s emissio n rat e i n th e ; • 'fina l rule : yyyy&My; -

Rfci%*^'-^-; *'•

* :*-. ^ •!-.•'-

. Regardin g th e issu e o f circumventio n o f th e standar dthroug hdilutio n ofth e emissio n stream , th e EP A believe s tha t dilutio n o f

th e ga s strea mca n b e determine db y reviewing tes t an d permi t dat afo r afacility . Th e outle t

ai r flo w rat e measure ddurin g testin g shoul dapproximat e th e desig n ai r flow rat e fo r th e contro l syste mreporte do n th e permi t

application . I f

th e tw o value s diffe r significantly , the n a n inspectio n o f th e contro l syste mca n b e mad e t o . determin e i f

dilutio n ai r

i s bein g introduced . I t

i s als o possibl e fo r

a faciUt y t o dilut e th e inle t ga s strea mt o th e contro l devic e b y designin g asyste m -t o ventilat e th e electroplatin g tank s a t ai r flow rate s substantiall y abov e thos e requiredfo r

adequat e ventilation . ' However , th e increase dinstallalio n an d • maintenanc e cost s associate dwit hsuc h asyste mwoul doutweig hth e cost s o f complyin g wit hth e standar dwithou t dilution : Further , § 63.4(b ) ofth e Genera l Provision s expressl y prohibit s dilutio n a s amean s t o compl y wit ha n emissio n limit . Therefore , concern s o f dilutio n o f

th e ai r strea mwer e no t considere dt o outweig hth e benefit s o f a .concentration-base dforma t fo r th e standard . Eigh t commenter s disagree dwit hth e _ . EPA' s decisio n t o bas e th e standar do n emission s o f

tota l chromiu mrathe r tha n o n emission s o f

hexavalen t

chromium . .

. Tw o commenter s suggeste dallowin g source s t o demonstrat e complianc e b y testin g for

hexavalen t

chromiu mi n lie u o f tota l chromium . Th e EP A decide dt o bas e th e standar d o n tota l chromiu mbecaus e th o HA P lis t

- identifie s al l chromiu mcompounds , no t jus t hexavalen t

chromiu mcompounds . I n addition , base do n testin g conducte d b y th e EP A for

thes e sourc e categories, " th e availabl e tes t

dat aindicat e tha t hexavalen t

an dtota l chromiu mlevel s i n th e emissio n strea mwer e essentiall y th e - sam e fo r chromi c aci dbath s (varyin g withi n ±1 0 percen t

i n mos t instances) . Becaus e th e EP A dat abas e i s mainl y . V comprise do f

dat ameasure das.. . hexavalen t

chromium , th e final rul e -*• ' : . doe s allo w al l source s usin g chromi c aci dbaths.t o demonstrat e complianc e . b y measuriri g eithe r

hexavalen t

o r tota l . chromiu mforallsources.- ' .-'• • " ; ' : - . .

, F. Selection of

the Emission, Limits y. :•••• Man y commenter s state dtha t th e v emissio n limi t

base do n th e Us e of : - : > ..-. ..compositemesh-pa dsystems-shoul db e > : . changeaVThre e cominenters'suggeste d••" 1 lowerin g th e emissio n limi t tha t i s base d • o hth e us e o f

composit e riiesh-pad-" ! * ; systems , statin g tha t

th e EP A di dno t

• • 'tes t th e bes t system s available , ari d v '

- ; -' • suggeste dlevel s ranging-fro m0.00 1 mg /
_ ' dscn i to0.00 9 mg/dscm . Other..-'; 'Federa l Registe r/ Vol . 60 , .No . 1 6 7 Wednesday , Januar y 25 , iQQ^l : Rules|,:4ndv^ulaU6n s ;; ,.,4957 , P.1 2

commenter s state dtha t

th e propose d limi t base do n composit e mesh-pa d system s (0.01 3 mg/dscm ) wa s to o low . Fiv e commenter s state dth& t th e

. propose demissio n limi t fo r packed-be d scrubber s wa s als o tp o high , notin g tha t som e unit s teste db y th e EP A di dno t achiev e thi s limit . Th e propose demissio n limi t o f 0.01 3 mg/dsc mfor

larg e har dchromiu m electroplater s wa s base do n test s tha t th e EP A conducte do n actua l control , device s operatin g unde r

norma l proces s conditions . Lowe r

limit s tha n th e on e selecte dfor

larg e source s wer e measure dfromthes e devices , bu t th e EP A base dth e emissio n limi t o n th e highes t measure ddat apoin t

an d, believe s tha t

thi s limiti s consistentl y achievable . Regardin g th e emissio n limi t base do n packed-be dscrubbers , th e EP A di dtes t som e packed-be dscrubbe r system s tha t

wer e no t achievin g th e leve l o f 0.0 3 mg/dsc mrequire db y th e - propose dstandard . However , thes e device s wer e no t

optimize dt o achiev e th e highe r

remova l efficiencies . Specifically , whe n scrubber s wer e operate dwit hperiodi c o r continuou s

. washdow n i n whic hfreshwate r wa s supplie da s makeu p t o th e to p of th e bed , alimi t

of a t leas t 0.0 3 mg/dsc mwa s

. achieved . Th e final rul e include s wor k practic e standard s tha t

requir e th e us e of fres hwate r

adde dt o th e to p of

th e packe dbe dwheneve r

makeu p addition s occur . Thus , packed-be dscrubber s tha t ar e operate di n accordanc e wit hth e requirements ofth e rul e shoul db e abl e . t o achiev e alimi t

o f 0.0 3 mg/dscm . Th e EP A doe s no t

thin k i t i s appropriat e t o substantiall y charig e th e emissio n limit s • . base do n th e us e o f

composit e mesh-pa d system s o r

packed-be dscrubbers ; th e commenter s di driot

provid e dat atha t supporte dthei r

clai mtha t

differerit emissio n limit s ar e mor e appropriate . A s discusse dpreviously , th e emissio n limi t for decorativ e chromium : electroplatin g tank s an dchromiu m anodizin g tank s ha s bee n change dt o 0.0 1 mg/dsc mi n th e final.rule b y applym g asafet

y facto r t o th e highes t dat apoin t

(0.00 7 mg/dscrii)i n th e fume suppressan t

dat abase . Similarly , th e *•-. . emissio n limi t

tha t i s base do hpacked

be dscrubber s i s base do n roundin g th e highes t valu e (0.02 8 mg/dscm ) i n th e ; ? packed-be dScrubber

dat abas e t o 0.0 3 .. . mg/dsc mt o incorporat e asafet y factor , : Therefore , i n th e final rule,--theRemission ' limi t thatisbased-o n the udeofJJ J -.-• / composit e mesh-pa dsystem s (0.01 3 tag/ dscm ) ha s bee n adjuste df b 0:01 5 mg / ; dsc mb y applyirig e safety facto r t o th e highes t valu e (0.01 3 mg/dscm ) i n th e V dat abas e t o ehsuretha t

th e limi t i s achievableo n aconsisten t basis

- . ' G. Selection of Compliance Dates . yl

•_. -_, Several commenter s state dtha t the " '.* * propose dcomplianc e date s for, affecte d existin g source s di dno t

allo w sufficien t tim e t o achiev e complianc e wit hth e propose drule . Th e inajority o f thes e - . commenter s suggeste dcompUanc e .;• • timeframe s of

2 t o 3 years . Accordin g t o th e commenters , th e complianc e perio d specifie di n th e propose druj e di dno t allo w enoug htime t o informan d educat e affecte downer s an doperators ; acquire , capital ; conduc t

researc han d tes t systems ; identify , purchase , an d instal l contro l equipment ; develo p '-. . „ startup , shutdown , an dmalfunction r plans ; trai n staff

; build.iriventories ; and,. ~ establis hreportin g an drecordkeepin g systems . .. ' *.; . Th e Ageric y agree s wit hth e commenter s tha t

th e compUanc e timeframe s for

affecte dsource s shoul d b e increased . Th e EP

A recognize s tha t sbiri e ofth e faciUtie s withi n al l ofth e sourc e categorie s wil l hav e t o investigat e th e technica l feasibiUt y o f installin g cbhtro l device s o r usin g othe r technologie s at

thei r faciUt y t o mee t th e standards.-'.Also', ' man y are asource s air e no t ye t awar e tha t

arul e i s t o b e promulgate dfo

r thei r industry , an dtim e i s neede dfo

r the mt o b e mad e awar e of . th e requirement s o f

thi s rule . Therefore , th e EP A ha s extende dth e complianc e dat e t o 1 year

after th e promulgatio n dat e fo r existin g decorativ e chromiu m electroplater s an d2 year s after th e ' promulgatio n dat e fo

r existin g har d. chromiu melectroplater s an dchromiu m* anodizers . Th e EP

A beUeve s tha t

th e 1 year timefram e for

decorativ e chromiu m electroplaters i s sufficien t because, ' base do n th e EPA' s surve y data , 8 0 percen t o f existin g source s alread y us e \ fum e suppressant s an dvery few wil l nee dt o instal l add-o n ai r pollutio n ,'._.,.' . contro l devices. . Th e EPA think s tha t th e compUanc e timeframe s i n the , final rule , wil l addres s commenter s -concernsan d Still ensur e impleriientatior i of control s , i n atimely fashion . Du e t o th e toxicity ! o f chrpiriiu mcompound s ari dth e .' * importanc e of

controllin g chromium : " emission s t o protec t

huma n healt h'an d~J th e environment , th e Agenc y decide dV ; agains t acomplianc e tim e longe r tha n 2 - year s fo r an y o f th e sourc e categories '/

. .3 ••affected ; JJ'y; '•.,.*.

• V •• -' •>$ > 3JJJ3 C:'.\^J:/--y. ,'3 Tp-accornmodatesource s tha t cannot; ; compl y wit hth e standar db y th e JyJOJJ';^ compUanc e date , § 63l6(i ) o f tUe Gbnera l Provision s and§63.:343(a)(6);o f subpar t N alloW s -Sourc e t o request ajijyear.3'-^ CbmpUariCeextension , whichmus t be; . ; submitte d6;nionth s i n advanc e o f th e I * ; ; complianc e date

i identifie dmthe : ' J'J-J^,.- regulation . Thi s extensio n combine d%yJ. wit hth e compUanc e timeframe s in'th e "'• " propose drul e coul dprovid e atota l of . '. , 2 year s fo r compUanc e fo

r decorative ! chromiu melectroplater s an d3 year s fo r compUanc e for

har dchromium , electroplater s an dchromiu mariodizers . H. Selection of

Monitoring Requirements Sectio n li4(a)(3 ) ofth e Ac t require s enhance dmonitorin g an dcomplianc e certificatio n o f

al l major stationar y sources . Th e annua l com p Uaric e certification s certif

y whether . , compUanc e ha s bee n continuou s o r interinittent . Enhance dmonitorin g shal l b e capabl e o f

detectin g deviation s from eac happUcabl e eriiisslof

t Umit o r standar d-wit

hsufficient

.'..' ' representativeness; accuracy , precision , reUabiUty , frequency, an dtimelines s t o determin e if

complianc e i s continuou s durin g areportin g period . Th e .. . monitorin g i n thi s regulatio n satisfie s th e requirements of

enhance d monitoring... " '•',''' • 1 . Complianc e Monitorin g fo r Add-o n Ai r Pollutio n Contro l Device s , . .••.,- . Eleve n comment s addresse dthe. . suitabilit y of

measurin g ga s velocity t o demonstrat e pri-goin g complianc e whe n add-o n ai r

pollutio n contro l device s arcUsedt o compl y wit han eriiissio n limit . Th e commenter s state dtha t measurin g ga s velocity i s very complicated,

- , • redundant wit hmeasurin g pressur e • drop , an dno t

indicativ e of.contrd l devic e performance . Tw o commenter s pointe dou t

tha t n o suitabl e testin g poiri t ma y b e accessible , an da permanen t

measuremen t

devic e may b o . : foule db y chromi c acid . Severa l commenter s .remarke do n th e requiremen t

fo r measurin g chroriiiu m concentratio n i n th e scrubbe r water . Fou r of thes e commenter s state dtha t there , i s n o obviou s relationshi p betwee n scrubbe r wate r chrorhiu mconcentratio n ari dscrubbe r

performance . Othe r commenter s indicate dtha t /., ' •.. _J " * . ' mieasurerhent

o f chromiu m>_'*'•':

, •' ' concentratio n i n scrubbe r wate r wit ha ' y " hydromete r

i s no t accurate.; . ' -J

. r.; . h i jevisin g th e propose dmie , th e EPA , recognizes tha t

thejmeasufemerito f

ga s V velocit y coul db e burderisorii e ari d.that':"- .

. othe r control,syste mparameter s coul d••'".' • potentiaU y b e use dt o deterrriih e on - * •;•?'•_ : goin g compliance ; Therefore, ' ii i th e > J •_; : V

. final.rule, source s usin g cdmposit e J'y'- '•','•_*" : - ; -mesfrpadsystems/ar e require dtb'T-":... .',: • • .-monito r presur e dro p acros s th e icleyice \ ; ^ ,forcompliwTO^p"^qses], : Basedpr i J;.;!i ' 2 in.fonriation;gathere db y th e EPA, ; •-';-:'.'.: ; ;, : - '^pressur e dro p i s directl y relatedjt o £& .Jl V composite..mesh-pa dsyste m.«;vi-.^'V'i--ii'r t A 4 .-, : perform^ce , measuremen t of pressure-• • ••'•••'

. dro p is^straightforward , ari dsome!^users - ofcompositejriesh-padsystem s ar e /;.,,>. . 0 . • currently • Tnoriitorin g pressur e drop . Th e ,••'••/.

- 

## . - m : L i 

## i 

# •i495 8 *. Federa l Register ; /Vol . 60 , No . 1 6 / Wednesday , Januar y 25 , 199 5 / Rule s an dRegulation s P.1 3



# H e EPA'believe s tha t thi s chang e makes th e rul e mor e flexible for

regulatedsources, , while''stil l ensurin g tha t

th e EP A ha s a mechanis mfor

determiniri g compUanc e wit hth e emissio n limit s at an y give n time . : Th e final rul e require s source s tha t us e apacked-be dscrubbe r t o mee t th e emissio n limi t

mus t measur e th e velocit y pressur e a t

th e inle t t o th e contro l syste ma s wel l a s th e pressur e dro p acros s th e device . Th e relationship, betwee n pressur e dro p an dpacked-be d scrubber performanc e i s les s reliable tha n th e relationship betwee n pressur e dro p an dcomposit e mesh-pa dsyste m'* * performanc e becaus e of

th e lowe r pressur e dro p i n packed-be dscrubbers . Therefore , th e EP

A als o requires source s usin g packed-be dscrubber s t o monito r th e velocity pressur e a t

th e inle t t o th e contro l device . Thi s requiremen t wil l ensur e tha t

th e ga s velocity throug hth e contro l syste mi s maintaine di n accordanc e wit hvendo r recommendations and , alon g wit hth e preissiir e dro p monitoring , wil l ensur e tha t th e contro l syste mi s properl y operating . The.requiremen t

tha t source s usin g packed-be dscrubber s monito r th e • • • chromiu mconcentratio n i n th e scrubbe r wate r ha s bee n eliminated , becaus e th e EP A conclude dtha t

monitorin g ofth e velocity pressur e a t

th e contro l devic e inle t an dth e pressur e dro p acros s th e devic e wa s sufficientt o demonstrat e compUanc e wit hth e emissio n Umit s - whe n packedrbe dscrubber s ar e used . CompUanc e monitorin g requirement s for fiber-bedmis t

eliminator s hav e bee n adde di n th e final rul e becaus e thes e device s coul dlikel y b e use dt o mee t th e emissio n limitations , an dsorii e fiberbe dmis t eliminator s ar e know n t o b e i n use . Source s tha t

us e afiber-bedmis t

" ; * eliminato r

t o mee t th e emissio n limi t mus t measur e th e pressur e dro p acros s th e fiber-bedunit , a s weU a s th e pressure.dro p acros s th e contro l devic e upstrea mo f

th e fiber be duni t tha t i s i n plac e t o preven t

plugging . ; A s discusse dabove , severa l change s hav e bee n mad e t o th e monitorin g : requirement s specifie di n th e propose d rul e base do n th e EPA' s review o f comment s receive do n th e propose d rul e an dfurthe r

investigatio n o f

whic h proces s parameter s relat e bes t t o prope r -performanc e ofth e contro l systems . Th e final compUanc e monitorin g requirement s ar e foun di n § 63.3.43(c ) o f th e final rule.

- 2 . Wor k Practic e Standard s fo r

Add-on * An * Pollutio n Contro l Device s I n th e propose drule . Operatio n an d Maintenanc e (O&M

) requirements fo

r add-o n ai r

pollutio n contro l device s consiste dof addin g makeu p wate r

t o packed-be dscrubbers , requiring washdow n o f

composit e mes hpads , an d variou s inspection s for

bot htype s o f contro l devices . Th e majority o f comment s focuse do n th e requirements associate dwit hmakeu p wate r for packe dbed s an dwashdow n fo r composit e mes hpads . Severa l commenter s suggeste dalternative s fo r v th e requirement s for

addin g makeu p wate r t o packed-be dscrubbers . Th e commenter s disagree dtha t makeu p wate r ca n o r shoul db e adde dt o th e to p ofth e scrubber . Other s questione dth e nee dt o us e freshwate r

i n scrubber s an d composit e mes hpad s becaus e doin g s o increase dwastewate r

flows. Othe r commenter s requestedtha t th e final rul e defin e th e term"fres h:Arater. " In th e final rule , th e O&

M requirement s hav e bee n replace dwit h wor k practic e standard s tha t

addres s O& M practice s ( § 63.342(f)] . Th e final rul e continue s t o require source s usin g packed-be dscrubber s t o mee t a n emissio n limi t

an densur e tha t

al l makeu p wate r

i s freshan dsupplie dt o th e uni t a t th e to p o f

th e packe dbed . Th e EP A consider s thi s requirement essentia l tomeetin g th e prescribe d emissio n limit . Durin g sourc e testin g conducte db y th e EPA t o estabUs hth e performanc e leve l o f

packed-be d scrubbers , i t

wa s note dtha t

asyste m equippe dwit ha n overhea dspra y syste mtha t

periodicaU y cleane dth e packin g wit h.freshwate r

performe d muc hbette r

tha n asyste mwithou t

suc h cleaning . Base do n thos e results , th e EP A believe s tha t

withou t th e •requirement

tha t makeu p wate r

b e fresh an dadde dt o th e to p ofth e packe dbed , scrubber s wi

U no t continuousl y mee t th e requiredemissio n limi t eve n i f the . • scrubber me t th e limi t durin g th e initia l performanc e tes t

an di s operate dwithi n th e appropriat e range s o

f pressur e dro p an dvelocity pressure . Fo r clarification , th e termfreshwate r

i s define di n th e finalrule. Ther e wer e 1 1 comment s o n th e '^" washdow n requirement s for composit e mesh-pa dsystems . Severa l o f thes e •••...'.'• commenter s indicate dtha t th e specifie d washdow n frequency wa s eithe r ';,:' . impractical , infeasible , o r unnecessary . Seve n commenter s suggeste dwashdow n requirement s fo

r composit e mesh-pa d. system s b e site^specificias}& :jJ . JJ ;.- recommendedb y vendors , o r appl y onl y i f pressur e dro p determination s indicat e * th e potentia l presen t

o f chromi c ad d: ;

v > buildup . Tw o commeriter s indicate d: 'J *". . " tha t th e washdow n wate r

wil l likel y ~ excee dth e quantit y o f

wate r tha t canbe ; recycled , thu s resultingiri' awastewater,' . streamtha t

need s tbbe'treated ; J.J- : ~ I n th e final rule , th e EP A ha s revise d th e requiremen t

tha t source s complyin g wit ha n emissio n limi t

b y usin g a composit e mesh-pa dsyste mperform washdow n o

f th e pads . Th e EP

A beUeve s tha t

washdow n i s a n essentia l par t o f composit e mesh-pa dsyste m operation ; if

prope r syste mmaintenanc e suc has.washdow n doe s no t occur , ther e ' wil l b e adecUn e i n syste mperformance . . However , instea do f

specifyin g a washdow n frequency, th e reyise drul e i specifie s tha t

washdow n b e conducte d i n accordanc e wit hmanufacturers ' . recommendation s a s par t o f afaciUty' s O& M plan . Th e EP

A recognize s that . . vendo r design s fo

r thes e system' s vary significantly , an dth e requirement s fo r washdow n ar e base do n th e desig n o f th e uni t an dth e operatio n ofth e platin g tanks . Th e frequency of

washdow n i s - dependen t

upo n th e positio n o f

th e pa d i n th e contro l unit . Pad s locate di n th e front portion s ofth e uni t

ar e expose dt o highe r chromiu mconcentrations ' and, ' therefore , requir e washdown s mor e frequently tha n thos e locate di n th e bac k o f th e unit . Washdow n practice s recommende db y manufacturer s vary fromcontinuou s i n som e case s t o a maximu mo f

onc e every 1 to 2 weeks. . Th e EP A ha s als o adde dwor

k practic e standard s fo

r fiber-bedmis t

eliminator s i n th e final rul e becaus e thes e contro l device s ar e hkel y t o mee t th e emissio n limitations , ari dar e know n t o b e i n us e , b y source s affecte db y thes e standards . - Th e wor k practic e standard s identifie d fo r fiber-bedmis t

eliminator s ar e analogou s t o thos e identifie dfo r th e composit e mesh-pa dsystem . Washdow n . requirements fo

r fiber-be dunit s wil l ':• depen do n th e efficienc y of th e ' prefilterin g devic e an dth e operatio n o f th e platin g tanks . Fiber-be dunit s installe ddownstrea mo f

mor e efficient prefilterin g systems , suc ha s packed-be d scrubbers , wil l requir e les s frequent washdow n tha n thos e usin g ales s effectiv e prefilterin g devic e becaus e of th e lowe r inle t loadin g t o th e unit . Mos t vendor s of

fiber-bedunit s recommended monitorin g ofth e pressur e dro p a s a. mean s o f gaugin g whe n th e uni t

need s t o b e washe ddown . I

f an increas e i n pressur e dro p i s observed , the n th e uni t wti l b e washe ddow n t o remov e an y . . chromiu mbuil t

u p o n th e fiber

- . '->.-;'•••' 'demerits. . *'

• •-.. , • '•' '.",Ji;:' : '-:J- : '.•*'• • • ' 3 . Frequenc y of

Monitorin g for-Add-o n '•'"' -Ak.PoUu'tipnCMtoi'-Deyicgs'y*^/^.;'^ ^ ' •* • Fourtee n commenter s indicate dtha t \»*- . th e dail y monitorin g b f

add-o n air ; sv* . > ; «:; ; poUutio n contro l device s is

- * . ;•'j,'-' r i'->.• ; unnecessary , particularl y fo r siria U [: ... % sources - ari dsuggeste dtha t atleas t sprite | ofth e monitorin g I M requiredpr i onl y a-.j.f

: weekly,monthly.orquart-^lyl»sis L.; : :n 'Federa l Registe r J Vol . 60 , No . 1 6 /

Wednesday , Januar y 25 , 1*99 5 / Rule s an d-Regulation s 495 9 P.1 4

Othe r commenter s suggeste dtha t " monitorin g b e tie dt o productior i rate , tha t monitorin g h e conducte donl y o n day s when-electroplatin g i s takin g place , o r tha t monitorin g requirement s b e reduce dafter

th e sourc e ha s bee n i n compUanc e fo r

6 months . Commenter s als o requeste dtha t

monitorin g b e require donl y durin g tan k operation , ari dtha t tan k operatio n b e defined . Severa l commenter s disagree dwit hth e propose dinspectio n frequency becaus e o f increase dexposur e hazard s t o person s conductin g th e inspection s o r o f anticipate ddown-tim e du e t o th e inaccessibiUty o f

contro l systems . I n respons e t o thes e Comment s an dt o minimiz e tiie burde n o n regulated sources , th e EPA M s reduce dth e ' burde n associate dwit hthe'cbmplianc e monitorin g an dwork

practic e standard s i n th e final rule . Th e final rul e continue s t o requir e dail y monitorin g o f pressur e dro p an dvelocit y pressur e fo r compUance , bu t

th e monitorin g procedure s specifie di n th e rul e ar e th e minimu mrequire dt o determin e continuou s compUance . Onc e th e monitorin g device s ar e i n place , th e onl y laborxequire di s tha t neede dt o readth e gauges . Th e frequency o f inspection s for

compUanc e wit hth e work practic e standard s ha s als o bee n reducedorTevised . I n th e final rule , th e frequency o f

inspection s ha s bee n reducedfrommonthl y o r dail y t o Onc e every 3 months . Th e EP

A beUeve s tha t th e inspection s ar e sti U necessar y t o - ensur e tha t

syste mdegradatio n i s no t occurrin g overtime , becaus e gradua l degradatio n may no t

b e apparen t

from compUanc e monitorin g alone . Som e commenter s note dtha t

thei r system s wer e no t accessibl e fo r

inspection , o r tha t th e inspectio n woul dresul t i n extende ddowntime . Th e complianc e timeframe s i n th e final rul e shoul d allo w source s sufficien t

tim e t o retrofi t thei r system s t o faciUtate inspections , an dth e negativ e effect s of any " C d o wntim e ar e minimize db y tiie reduce dinspectio n frequency. Th e final nil e als o ha s bee n clarifie d s o tha t monitorin g requirement s appl y onl y durin g tan k

operation ; tan k operatfoni s define dir i §63.341 ; ^ 4 . Complianc e Monitorin g Associate d- •-• : Wit hFum e Suppressant s : Regardingtii e useo f

-wettin g agent typ e fome suppressants ; seven : •• • commenter s indicate dthaltthei''". ; ;> " ; requiremen t

fo r knaintainiri g suifac e v tensio n below40-dynes/c mfor . chromic . aci dbath s I s inappropriate . Th e -reason s • provide db y thecon-menter s wer e tha t : - asurfac e tensio n -standar dma y -ho t be 3 . ' pruden t t o demonstrat e coriipliance , a: direc t correlatio n betwee n exceedanC e '• ' of parameter s an demissio n limit s ha s no t bee n estabUshed , an dth e rul e shoul dallo w source s to se t thei r ow n compUanc e valu e for

surfac e tension . Othe r commenter s note dtha t

th e specifie dlimi t

wa s eithe r

to o lo w o r

wa s no t consisten t

wit hmanufacturers ' recommendations^ Base do n dat acollecte db y th e EPA , th e performanc e o f

a n electroplatin g bathcontrolle dwit hawettin g agent typ e fume suppressan t

ca n b e determine db y tiie surfac e tensio n of th e bath . Therefore , th e EP A beUeve s tha t ther e i s adirec t

lin k betwee n surfac e . tensio n an demissions . Th e EP A als o beUeve s tha t

i t i s necessar y an d appropriat e to se t

adefaul t valu e for surfac e tensio n i n th e nde . Base do n th e EPA' s experience , man y decorativ e chromiu melectroplatin g tank s ar e no t ventilated , makin g sourc e testin g impossibl e withou t

considerabl e retrofitting. Th e EP A ha s increase dth e defaul t surfac e tensio n limi t

fromth e propose d 4 0 dynes/c mt o 4 5 dynes/c mbase do n informatio n receive ddurin g th e commen t period . However , i f

afacility beUeve s tha t

adifferen t

surfac e tensio n valu e i s appropriate , th e rul e allow s a sourc e to conduc t

aperformanc e tes t concurrentl y wit h surfac e tensio n monitorin g t o establis hth e maximu m surfac e tensio n tha t

correspond s t o compUanc e wit hth e emissio n Umits . Th e sourc e woul dsubsequentl y monito r surfac e tension , wit ha n exceedanc e occurrin g i f

th e surfac e tensio n o f

th e bath-exceede dth e valu e measure d durin g th e performanc e test " Regardin g foamblanket-typ e fum e suppressants , severa l commenter s wer e concerne dabou t

th e techniqu e for measurin g foa

mblanke t

thicknes s an d th e potentia l hazard s associate dwit h thi s measurement . Anothe r commente r state dtha t

th e stac k testin g -requiremen t i s unreasonabl e du e t o it s excessiv e cos t *'.-. * ".'*-
. '•':--;"'.-' " Th e EP A doe s no t

believ e tha t

i t i s necessary t o specif

y aprocedur e becaus e i t i s simpl y adept h measuremen t

Specifyin g atechniqu e may als o hinde r

th e developmen t

o f site-specifi c technique s t o reduc e worke r exposure . TheEP A believe s tha t wettin g agents ar e safe r

tha n foam blanket s becaus e foa mblanket s presen t apotentia l safet

y hazard . Th e foamtrap s th e hydroge n ga s an dchromi c aci djnis t i n th e foamlayer ; i f

thes e gase s buil du p an daspark

I s generated , ahydrpge n ••.*. : explosio n wil l resul t

As amean s o f

J.yJ encouragin g wettin g agen t us e ove r .' • foa mblankets , source s usin g wettin g . ; agent s d o riothaveto conduc t aV > - jperformaric e tes t

unles s theywant;t o se t asurfac e tensior i limi t

othe r tha n th e , " defaul t

valu e o f 4 5 dyries/cm . Th e EP

A believe s tha t

th e complianc e timeframe s i n th e final rul e wil l allo w source s tha t currentl y us e foa

mblanket s th e opportunit y t o explor e th e us e o f wettin g agents . Source s that wis ht o continu e usin g foa

mblanket s wiU b e requiredt o conduc t

aperformanc e test . 5 . Frequenc y o f

Monitorin g Associate d Wit hFum e Suppressant s Ther e wer e ove r

2 0 comment s relate d t o th e frequency o f

monitorin g surfac e tens i on . Severa l of

thes e commenter s mad e recommendation s fo r alternat e monitorin g schedules , rangin g from dail y t o monthl y monitoring , i n plac e o f th e 4-hou r

schedule . Amon g th e reasons cite dfo r decreasin g th e surfac e tensio n monitorin g frequency wer e tha t surfac e tensio n doe s no t

chang e o n adail y o r weekl y basis , measurin g surface-tensio n i s very time-consumin g an dcoul d requir e someon e full-tim e i f ther e wer e multipl e tanks , an dfrequent monitorin g result s i n increase dworke r exposure . Thirtee n commenter s provide d remarks regardin g th e burde n o f hourl y testin g fo r source s usin g foa

mblankets . Th e commenter s note dtha t foa m* blanket s tha t

ar e use daccordin g t o manufacturer' s Instruction s ar e designe dt o las t

2 4 hour s provide dth e ai r i s no t agitate dat

th e surfac e nea r

th e anode s an dfreeboardheigh t i s adequate . Therefore/visua l observatio n i s adequat e for

determinin g foam blanke t effectiveness . Othe r

commenter s state dtha t

th e excessiv e monitorin g , requirement s fo r

foa mblanket s discourag e thei r

use , ye t severa l State s . recommen do r

requir e foa

mblanket s . wit hles s testin g an drecordkeeping tha n tha t propose db y th e EPA . I n response t o comment s an dsom e dat areceived, th e EPA recognize s tha t th e 4-hou r

surfac e tensio n monitorin g ' frequenc y specifie di n th e propose drul e ma y b e burdensome , an di n som e cases , , - unnecessary . Th e ER

A ha s insufficien t data , however , t o establis hth e monitorin g frequency tha t i s appropriat e fo r eac hmod e o f

bat hoperation . Therefore , th e frhal rul e aUow s a decreas e i n monitorin g frequency i f n o '; exceedance s occur . Sectio n .- . 63.343(c)(5)(ii)(B ) specifie s tha t th e surfac e tensionb e measure donc e ever y , 4-houi s o f

tan k operatio n fo

r th e first 4 0 . hour s oftan k

operatio n afte r

th e comphanc e date . I f

n o exceedance s : . occur , monitorin g ca n occu r onc e evei y 8 hour s o f

tank operation . Onc e there ' ar e agai n n o Exceedance s durin g 4 0 - hour s of tarikoperation,surfac e tensio n • , measuremen t

ma y b e conducte donc e ... . ever y 4 0 hoursoftan k

operatio n o n a n on-goinghasis , unti l a n exceedanc e ; occurs . Onc e a n exceedanc e o f th e ;

' * f •

• ' |

• • : >, i !.. ! '«. '

• • ! 

# fl r;lP.1 5

496 0 Federa l Registe r 7 Vol . 60 , No.;16';/ ' Wedj-tesday ^ •^ftai'v-'-^''' '

!;: '



### a.' standar doccur s o r th e electroplatin g .

' solutio n i s change dout , th e original , monitorin g schedul e mus t b e resumed Likewise , th e final rul e contain s allowance s t o decreas e th e frequencyof monitorin g foa

mblanke t thickness . Th e propose dhourl y frequency i s base do n th e EPA' s experienc e tha t foa mblanket s can deplet e quickl y an dmus t b e closel y monitored . Th e final rul e i s unchange d ir i tha t source s usin g afoa

mblanke t mus t conduc t aperformanc e test , an d th e initia l monitorin g frequency i s onc e pe r hour . However , a s wit hwettin g agents ; th e final rul e allow s adecreas e i n monitorin g frequency i f n o exceedance s occur . Sectio n 63.343(c)(6)(ii)(B ) specifie s tha t th e foa mblanke t thicknes s b e measure d onc e every hou r

of tan k operatio n fo

r th e first 4 0 hour s b f

tan k operatio n after th e compUanc e date.i f

n o exceedance s occur , th e tim e betwee n monitorin g ma y b e increase dt o onc e every 4 hour s of tan k operation ; Onc e ther e ar e n o exceedance s durin g 4 0 hour s o f tan k operation , foa

mblanke t thicknes s measuremen t

may b e conducte donc e every 8 hour s of

tan k operatio n o n a n on-goin g basis . A s wit hwettin g agents , i f ther e i s a n exceedanc e o r i f th e electroplatin g bat hi s change dout , th e origina l monitorin g schedul e mus t b e resumed . I . Selectio n o

f Tes t Method s Thre e commenter s requestedtha t CAR B Metho d42 5 b e evaluate dfo r equivalency , ari di f

determine dt o b e equivalent , b e identifie da s suc hi n th e rule . Thes e commenter s als o state dtha t source s tha t

hav e performe dthi s tes t shoul dno t

hav e t o retest . Fou r commenter s aske dwhethe r retestin g wil l b e requiredi f

source s hav e conducte dperformanc e test s previousl y usin g 306 , 306A , o r

a n equivalen t

tes t ' method . Sectio n 63.344(c)(2 ) identifie s th e condition s unde r

whic hth e CAR

B Metho d42 5 i s considere dequivalen t Basically , th e acceptabiUty o f thi s tes t metho dwil l depen dupo n th e analysi s rathe r tha n th e sampUn g trai n o r samplin g procedure . Regardin g th e issu e o f whethe r retesting i s required, §63.344(b>o f

th e final^rule outlme s th e criteri atha t

mus t b e me t fo r apreviou s sourc e test

to b e acceptabl e Tw o commenter s requeste dtha t th e rulejirovide : guidanc e o n ho w t o verif y compUanc e whe n bot hchromiu m anodizingan dhar dchromiu m electroplatin g tank s ar e vente dt o a commo n coritro i deviceiTUre e oomftieriter s pointe dbu t

tha t th e regulatio n doe s ho t

accoun t fo r th e situatio n iri whic hchromiu m electroplatin g soilrCe s shar e a ventilatiori syste mwit hnonchromiu m source s tha t

coul dintroduc e dilutio n air . Thre e corhmenter s note dtha t i t i s extremel y difficul t

t o reconfigure som e existin g system s i n suc hawa y tha t onl y th e emission s fromchromiu m, electroplatin g o r

anodizin g ar e tested . Ther e ar e basicall y tw o situation s . involvin g multipl e tank s manifolde dt o on e contro l system : (1 ) Th e multipl e tank s includ e achromiu melectroplatin g o r chromiu manodizin g tan k amon g othe r tank s no t affecte db y th e rule ; o r (2 ) th e multipl e tank s includ e chromiu mtank s performin g different operation s (e.g. , electroplatin g an d anodizing ) o r

har dchromiu mtank s subjec t t o different

emissio n limit s (e.g. , ane w tan k

an da n existin g smal l tank) , which.ma y o r

ma y no t b e controlle d wit hnonaffecte dsources . Sectio n 63.344(e ) of

th e final rul e include s complianc e provision s fo r botho f thes e situations . J . Selectio n o

f Reportin g ari d Recordkeepin g Requirement s Severa l commenter s state dtha t th e frequency o

f recordkeepin g an d•••

• reporting outline di n th e propose drul e wa s overl y burdensom e an dsuggeste d severa l alternatives . Seve n commenter s •• • state dtha t

th e type s o f

recordkeepin g require db y th e rul e ar e inappropriate . : I n general , th e commenter s remarke d tha t records , suc ha s th e amoun t of chemical s use dan dpurchase dari dth e amoun t o f fum e suppressan t

materia l adde dd o no t

indicat e compUance . Tw o commenter s state dtha t

recordkeeping requirements b e limite dt o onl y surfac e tensio n measurement s becaus e tha t measuremen t

i s th e basi s of

compUance . On e commente r

indicate dther e i s n o environmenta l benefi t

t o keepin g records o f

ga s velocities , pressur e drops , washdow n conditions , an dscrubbe r * wate r chromiu mconcentrations . Tw o commenter s state dtha t

maintaining . records a t afaciUt y for 5 year s i s ' excessive ; amor e appropriat e lengthof tim e Woul db e 3 years.brie commente r suggested.^minimu mo f

2 years ; :^;\-^ ; Two commenter s suggeste dthat.-the-- ^ reportin g schedul e b e replaced.wit ha./; ! requirement

tha t th e sourc e submi t

an,; . annua l certificationi&at.necessaiy JjJJjJ: ^ contro l parameter s hay b Bee n met; :^!. % cbrisisterit ; wit hth e anhri-dcertificitiori t requirementsof

titl e V. ; AhpthieV:^;^:; ^ commenter'indicate dtha t sources'$• • _'!%•_ '•'.•"•- ! •^i••^•y"•''>"•^••r^•• ':'••:' • -',!,!'• ; '':"'" •"" ' •S'IJ'S' V " ' exceedance s o

f an y Stat e orFederal i >.-,: 3 emission

- standards , -.;'," ' * •'.•'• • '•-',.''. ' '."*/",._;"

' Severicommenter s slated.tha t th e ; ',". " costsassociate dwit hth e monitoring'." ' ' an drecordkeeping constitute da n .,,.., ; unnecessar y burdent o bot hlarg e and \"'.. ' smal l facilities . Thes e commenter s als o "

. note dtha t

th e EP A underestimate dthe""' • cost s associate dwit hmonitoring , • ; -J..I reporting, an drecordkeeping. Two o f 'J. '•?• th e commenter s state dtha t smal l ... . .V; . /businesse s d o riot

hay e th e resource s to, ' kee p extensiv e records, Anothe r ..':;. . commente r

pointe dou t

tha t th e EP A ha s , recognizeddifference s i n larg e and , smal l facilitie s i n selectin g MAC T '"••.'.- • .. -

. emissio n standard s an dshoul dals o recognize difference s betwee n larg e an d smal l facilitie s i n selectin g reporting ^ . recordkeeping, an dpermittin g .*!.-.'. . requirements . '.'"' . ••".' • , . T o respondt o comment s receive dan d t o reduc e th e burde n o n th e man y area./ , source s that

wil l b e subjec t

t o tiiese . standards , th e monitoring ; reporting , ... .

. an drecordkeeping requirements hav e ; .... . bee n reduce di n th e final, rul e t o the ; '• " exten t possibl e whil e stil l providin g the * EPA wit hth e abilit y t o determin e a. : .'_..'.,,' . . source' s continuou s complianc e status..', , Th e recordkeeping requirements ar e -. '.. , " containe di n § 63.34 6 of

th e final rule . ;. y Th e EP A concur s tha t

th e record s .*.'.-. . require dt o b e kep t

shoul dcorrespon d specificall y t o tha t

whic hi s requiredt o ,"

" demonstrat e compliance . A s such , "..', ' recordkeeping associate dwit hfume . , , suppressant s require s onl y tha t source s maintai n records of

th e date;an dtime of surfac e tensio n o r

foa mblanke t

* .,*-,.'. . thicknes s measurements , a s appropriate , th e valu e measured , an dthe'date.an d'.' . \ tim e o f addition s of

fume suppressan t

to . th e bath . Likewise , th e recorclkeepin g •".'•" ' .associate dwit hth e add-o n ai r pollutio n contro l device s i s reduce dt o th e exten t tha t th e monitorin g requirement s have ' bee n reduced. Source s wil l hav e to keep;'. ' records of

pressiue.drp p andyelocity'£.',.7 ^ pressure , as : appropriate, , a s we U as.-.]£?!•!:;,'... . records t o documen t

adheienci e wit hthe'.' 1

. . . '

- O& M pla n requiredb y § 63;342(f)(3).V;V- ; *• ' J Th e final rul e i s unchange dImin&Q'-JfJ'' i Jc -proposal iirtha t

it^^ireqriiies'tiiatowheris".' ; . •J:- O r operator s ofaffecte dsource s niairitkih' ^ records for

aperiod : o f

5 year s following^.'.'.

.. . eachoccurreri'ce,measurement•.i.^Viv

- >?••_;" • ,' • maintenance , correctiv e ac-tibn/repiortT* i

- i * r

. > o r record . Tm^,req*_irementls v ;Consistent . ";. wit hth e Genera l Provision s an dwithe"'' " Kth e titl e Vpermi t

progr^^heEPA';;!^ ^ ' « •beUeve s retentio n o f

recpMW;fpr,5years', : i:i; Z allcw s th e EPA t o establis b aspurce' s v.•-;«; i , % histqiyaridpatterno f

compiiaiiqejor-j-Xyv . £purpose s of

determinin g A e appropriate ; • levelo f enforcemen t

action ; shoul dno t

b e Require dtp:submit£3 : \J: 3 cbmpU^cf

e report s i f

1 ^ permittogagency.Ihspect e records; animally\; R.._..„ » _.v„_., „ __,_„_ * _„,„,_„,,„,_<, . ;,.,;;;...,.• , commentersuj^bsted^ ^ areduicedSportin g ttquency^ year s if source s d dribtexperierice"'" ' ' ' statu s reports t o document ' whethe r aFedera l Registe r / Vol , 60 , No . 1*

6 / . Wednesday , Januar y 25 , 199 5 '/.Rule s antj;.*R^yjatjpns , ..496 1 P.1 6

sourc e ha s bee n i n continuou s complianc e wit hth e standards . Th e final rul e contain s differen t reporting schedule s fo

r major an dare asources . Major"source s ar e require dt o submi t on goin g compUanc e statu s report s semiannually , unles s a n exceedanc e occurs , a t whic htim e quarterl y report s woul db e required . Thi s chang e i s analogou s t o th e requirements o f th e final General Provisions , whic hha d onl y bee n propose da t

the time o f

thi s propose drulemaking . I n a n effor t t o reduc e th e burde n o n are asources , th e final rul e allow s are a source s t o complet e a n annua l compUanc e report, an dallow s th e sourc e t o maintai n th e report o n site , t o b e mad e availabl e t o th e Administrato r o r permittin g authorit y upo n request . Th e EP A recognize s tha t

man y permittin g authoritie s may no t b e equippe dt o handl e report s fromare a sources , an dtha t

thes e source s may no t b e th e source s of

primar y concer n toth e authority . However , th e requirement s i n th e final rul e d o no t

alleviat e affecte d are asource s fromcomplyin g wit hth e reporting requirements of Stat e or ! Federa l operatin g permi t

program s

. unde r titl e V . Th e rul e doe s requir e tha t are asource s submi t

report s semiannuall y if

exceedance s occur , o r

i f requiredb y th e Administrato r o r permittin g authority . . Source s usin g atrivalen t

chromiu m bat har e onl y requiredt o Jcee p record s o f th e bat hingredient s purchased . Thes e source s mus t

submi t a n initia l r " notificatio n an dnotificatio n o f compUanc e status , bu t

ar e riot require d t o submi t on-goin g complianc e statu s reports . . A s aresult

o f th e reducedmonitoring , reporting, an drecordkeeping i n th e final rul e compare dt o th e propose drule , th e cost s of thes e activitie s hav e als o bee n reduced . A compariso n ofth e cos t o f th e monitoring , reporting, an d recordkeepin g associate dwit hth e final an dpropose drule s wa s presente di n sectio n III. B o

f thi s preambl e fo

r eac hof the-regulate dsourc e categories . Op e commente r

requestedtha t

th e rul e clearl y stat e whic hsection s o f th e Genera l Provision s appl y t o chromiu m electrbplatin g source s an dwhic hd o no t apply . T o eliminat e Confusio n concernin g th e applicabiht y of th e Genera l Provision s t o thi s sourc e category . Tabl e lofsubparthlUstsi* . - whic hofth e Genera l F^OTsibnstoipai t 6 3 appl y ari dwhichdomotapplyto ' affecte dsources. ; Jj. 3-'\ ' :'•,.'•';'

- K. Operating Permit

Program ., • Eleve n commenter s state dtha t are a source s shoul dno t

b e require dt o obtai n title V operatin g permit s biecaus e th e cost s for are asource s t o obtai n titl e V permit s woul db e overl y burdensome , an dth e emission s fromthes e source s rna y b e insignifican t

Thre e o f thes e commenter s suggeste dtha t th e rul e explicitl y stat e tha t

apermi t i s required onl y fo r applicabl e emission s unit s a t nonmajo r sources . Two commenter s aske dtha t agenera l permi t

b e include d i n th e final rul e t o reduc e th e burde n fo r smal l facilities . Anothe r

commente r state dtha t

atitl e V permi t

i s no t necessar y becaus e existin g requirements ar e enforceabl e throug hStat e an dloca l permits . Thi s commente r an don e othe r commente r

pointe dou t

tha t becaus e are asource s ar e no t

likel y t o b e subjec t t o multipleMACTstandard s o r to emplo y emission s averagin g an d comple x alternat e operatin g scena_ibs , title V permit s d o no t

benefi t th e area * -sources . Tw o commenter s state dtha t i n preparin g thei r

titl e V permi t

programs , State s di dno t

anticipat e anee dfor emission-uni t

specifi c permit s a t nonmajo r sources , an dinclusio n o f nonmajo r source s unde r

title V wil l requir e tha t

man y loca l agencie s revise thei r permi t programs . Tw o othe r commenter s state dtha t

State s wil l no t hav e th e "resource s for

completin g titl e V permit s fo

r are asources ; som e state s hav e exempte dnonmajo r source s from thei r permittin g program s unti l th e nonmajo r sourc e permittin g rul e i s promulgate di n th e lat e 1990's . Th e EP A believe s tha t

requiring al l - Source s tha t

ar e subjec t

t o tiie standards , includin g are asources , to obtai n titl e V operatin g permit s i s importan t becaus e o f th e toxicit y o f

chromiu mcompound s an dth e cfos e proximit y o f man y of thes e source s t o residential areas . Th e EP A beUeve s tha t

permittin g are a. source s wil l no t

b e overl y burdensom e t o permittin g authoritie s an daffecte d source s fo r

fee reason s give n below . First , man y State s ar e alread y permittin g thes e source s unde r thei r Stat e permi t

programs . Th e preambl e t o th e final par t

70rul e state s feat

"som e nonmajo r source s woul dalread y b e permitte da t

th e Stat e level , an d therefor e woul dhav e some.experienc e -; • wit hth e permittin g proces s an d completin g permi t

applications."'"-. , Therefore , aStat e woul dhav e littl e * ' reason t o defe r

titl e V permittin g o f

1 sourcesthatalreadyhav e Stat e operatin g permit s Second , th e burden: * ma y b e reducedsi^ficantlyb y issuin g ' genera l permit s t o thes e sburces l f \; ; 7

. Accordin g t o th e preambl e to th e final;:; par t 7 0 rule , genera l piennits^* * •* ; * "J'J provid e a n alternativ e mean s Sop. ; : • •'.';. . permitting.sources'fo r

whic hth e , : . ; : procedure s o f

ihe norh—dpernutting';'. { £• ; process'wbul db e overl y burdensome . suc ha s are asource s unde r sectio n - 112 * * —Uriderthi s option.States ' woul ddevelo p asingl e genera l permi t • fo r thi s sourc e Categor

y an dissu e I t

t o individua l sources ; o r

alternatively , a lette r o r certificatio n ma y b e used . Th e burde n woul dals o b e reduce db y usin g genera l permit s becaus e publi c participatio n an dth e EPA an daffecte d Stat e review i s onl y necessar y whe n th e initia l genera l permi t

i s drafte dand . . issued . Whe n subsequen t genera l permit s ar e issue dt o individua l sources , thes e activitie s ar e no t

required. FinaUy , State s ar e developin g smal l busines s assistanc e program s (SBAP's ) t o assis t thes e type s q

f source s wit hth e •-.-. " permittin g proces s tha t

wi U b e funde d usin g th e annua l fee s coUecte dfrom permitte dsources . Smal l businesse s may als o b e eligibl e fo

r reduce d permittin g fees . Also , th e EP A i s , developin g aguidanc e document , . . schedule dt o b e complete db y January 1995 , whic hwi

U includ e sampl e form s fo r monitoring , recordkeeping, an d reportin g requirements , an dasimplifie d genera l operatin g permi t

•;..-.- • ... . Unde r titl e V , source s mus t

includ e . informatio n o n al l emissio n point s (excep t thos e considere dinsignifican t unde r th e Stat e o r

loca l permi t

program ) ir i thei r permi t appUcation . However , onl y thes e emissio n point s tha t ar e subjec t t o regulatio n wil l b e addresse d i n th e permi t

, - '. * ' • VI . Administrativ e Requirement s . A.Dockel Th e docke t

for thi s rulemakin g i s A

88-02 . Th e docke t

i s a h organize dand . complet e file of

al l th e informatio n submitte dt o o r

otherwise , considere db y th e EP A i n th e developmen t

o f thi s rulemaking . Th e principa l purpose s of th e docke t

are : (1 ) T o allo w inteieste d partie s amean s t o identif

y an dlocat e document s s o tha t

the y ca n effectivel y participat e I n th e rulemakin g process ; an d(2 ) to . serv e a s th e recordi n cas e o f judicia l review (excep t

fo r interagenc y revie w materials ) [sectio n 307(dJ(7j(A ) -. o f th e Act] . Th e docke t

i s availabl e fo

r •. publi c inspectio n a t

th e EPA' s Ali-and.. . Radiatio n Docket

an dInformatio n ;! , Center , th e locatio n o f

which ; i s given'in . th e ADDRESSE

S sectio n o f

-bi s notice.Jl;: . ? 

### B.ExecutimCMei:i2^Ji^j:%^J-^ Unde r Executiv e G)r_er'l_86615 8 '1-JR'. . 5173 5 (pctober-i1993)],^thte&geni^;':';,' : mus t determin e wh^er'iheTeg^atqry','. ' actio n i s "slfenificanP

- an d&'e*»fore!'^.Ti ^

. subjecttptJMBTevie w and^B',,^'^; ^ requirements *p

f th e Executir e Order . ,..-';

N Th e Orde r

defiriesvsigm ^ regulatory .'aciion' * )as bnetiia t i s 'Hcel^;.' ^ t o -result in arul e tiiatmay:' '~ '•"" ' ' " ' • T> ' 

## t. 

# J j 

# it 

# A i9P.1 7

496 2 Federal . Registe r7 Vol , 607No . 1 6 /Wednesday , Januar y 25 , 199 5 /Rule s an dRegulation s

•*•: , , (1 ) Hav e a n annua l effect o n th e economy of

$10 0 milUo n o r

more , o r '••..; \ adversel y affect

i n amateria l wa y th e economy , asecto r

o f th e economy , productivity , competitidn , jobs , th e environment , pubU c healt ho r safety , o r State , local , o r

triba l government s o r

•'*_'"• ' . ' communities ; (2) Create aseriou s inconsistenc y o r otherwis e interfer e wit ha n actio n take n o r planne db y anothe r

agency ; (3 ) Materiall y alte r

th e budgetar y impac t o f entitiemerits , grants , use r fees , or loa n program s o r

th e right s an d obligations'o f

recipients thereof ; o r (4) Rais e nove l fega

l o r polic y issue s arisin g ou t

o f lega l mandates , th e President' s priorities , o r

th e principle s se t fort hi n th e Executiv e Order . Pursuan t t o th e terms o f

th e Executiv e Orde r 12866 , th e Offic e of

Managemen t an dBudge t

(OMB ) ha s notifie dth e EP A tha t thi s actio n i s a"significan t '• • regulatory action " withi n th e meanin g of th e Executiv e Order . Fo r thi s reason, thi s actio n wa s sen t

t o OM B fo r review. Change s mad e i n response t o OMB suggestion s o r

recorrimendations wil l b e documente di n th e publi c record. C. Paperwork

Reduction fict Informatio n collectio n requirement s associate dwit hthi s rul e hav e bee n

. approve db y OM

B unde r th e provision s ofth e Paperwork

Reductio n Ac t

of 1980 , 4 4 U.S.C . 350 1 et

seq., an dhav e bee n assigne dOM

B contro l numbe r

2060

- 0327 . A n Informatio n Collectio n Reques t (ICR ) documen t

ha s bee n prepare db y th e EP

A (IC RNo . 1611.02 ) t o reflect th e change dinformatio n .'...* • requirements b f

th e final rul e an dha s • bee n submitte dt o OM

B fo r review . A cop y ma y b e obtaine dfromSaridy . Fanner , Informatio n PoUc y Branch , EPA , 40 1 M Street-SW , (2136) , Washington , D C 20460 , o r b y calUn g (202 ) 260-2740 . . Th e pubU c reportingburderifor thi s coUectio n o f

informatio n i s estimate dt o

. averag e 3 4 hour s pe r

respondent

i n the ' first year , 11 7 hour s pe r

responden t

i n th e secon dyear , an d297hour s per ' respondent

i n th e thir dyear . Thi s • estimat e include s th e time require dfor ; • reviewing instructions/searchin g .£'.•'•• '<-, c \ , existin g dat asources , gatherin g an dJ'' ' maintainin g th e dat aneeded , and-.',.;;> completin g an dreviewing th e coUectio n : of infonnation . Th e burde n i s greates t i n th e secon dan dthir dyear s becaus e thi s • i s when , performanc e test s wiUb e ., ]£.-- cbndhdedi * A hpri-^biriig burde n o f 104: ' hour ape r responden t

i s representativ e ^ : of th e burde n foUowing th e thir dyear.';;; ^ ^ Seridconuneht s regardin g th e burden ' estimate : orlan y otheraspec t O f this;; •?£••_ coUection'p'f.i^p-aratioh.-mdudh^:''^?' . suggestion s fo

r reducin g thi s burden , to ; Chief , Informatio n PoUcy Branch , EPA , 401 M Street , SW . (2136) , Washington , DC 20460 ; an dt o fee Offic e o f •'- . - •*' . Informatio n an dRegulatory Affairs , Offic e of Managemen t

an dBudget , •

; Washington , DC 20503 , marke d••• '.'Attention : Des k

Office r for EPA. " D. Regulatory Flexibility Act Th e Regulatory Flexibilit y Ac t of 198 0 ( 5 U.S.C . 60 1 et

seq.) requires tha t

a, Regulator y Flexibilit y Analysi s b e performe dfo

r a U rule s tha t

hav e "significan t

impac t o n asubstantia l numbe r of smal l entities. " I

f a preUminary analysi s indicate s tha t a propose dregulatio n woul dhav e a significan t

economi c impac t

o n 2 0 percen t o r mor e o f smal l entities , the n aregulatory flexibiUt

y analysi s mus t

b e prepared . Presen t Regulator

y Flexibilit y Ac t guideUne s defin e a n economi c impac t a s significan t

i f i t meet s on e o f

th e followin g criteria : (1 ) CompUanc e increase s annua l productio n cost s b y mor e tha n 5 percent , assumin g cost s ar e passe do n t o consumers ; r

; (2 ) CompUanc e cost s a s apercentag e o f sale s for smal l entitie s ar e a t

leas t 1 0 percen t mor e tha n compUanc e cost s a s apercentag e of

sale s for larg e entities ; . (3 ) Capita l cost s o

f complianc e . represerit a"significant " portio n o f capita l availabl e t o smal l entities , considerin g interna l cas hflo w plu s externa l financial capabilities ; o r (4) Regulator

y requirement s ar e likel y t o result i n closure s of

smal l entities . Usin g th e Smal l Busines s Administration' s definitiori of asmal l busines s fo

r SI C Cod e 347 1 o f

les s tha n 50 0 employees ; i t

ha s bee n determine d tha t non e o f th e abov e criteri aar e triggered . I n th e har dchromiu m electroplatin g sourc e category , th e . number , o f

smal l businesse s i s estimate d t o b e 1,170 . Non e of

th e regulatory alternative s considere dwiU^- ;

- significantl y impac t

2 0 percent , o f

thi s ... , operation : Fo r

example , th e estimate d; numbe r of closure s i s approximate da s ./• les s tha n 5 percent ; Likewise , th e - 1 ; standard s for

decorativ e chromiu m' ; JJ;> electroplater s and.chromiu manodizer s woul dno t

caus e _n y o f

th e abov e •'•';>•'.

• criteri at o b e triggered ; -*•; 3j}! : '. . Jj^Jy^-r..-

- Pursuan t t o fee provision s o f

5 U.S;C. ••'•• • 605(b) , I hereb y certif

y feat thi s rul e wil l • : no t have'.a . significari t

economi c impact * -•-. o n asubstantia l numberp f small. ; ^; ; ' ; busines s entitie s becaus e th e numbe r of ; , smal l busines s entitie s tha t woul dbe;.;.

J,.) [ dfecte di s nbtsigriific--^ty£.^£j<-;; ; •**•; ]' z^ '•• E. '-Afisc^aneous^-.V'^/V

. I n accbrdarioawiti i sectiorill ? of th e i '/:Ad,--pubUcatioripf'^iEf!..p'ipmidgat ^ rul e wa s precede db y consultatio n wit h appropriat e advisor y committees,.. . independen t

experts , an dFedera l " department s an dagericies , . Thi s regulatio n wil l b e reviewe d8 year s from fee dat e o f

prdmulgatiori. : Thi s review wi

U includ e a n assessmen t o f suc hfactor s a s evaluationo f th e residual healt hrisks, an y overla p wit h othe r programs , th e existenc e of alternativ e methods , enforceability, ' improvement s i n emissio n contro l technolog y an dhealt hdata , an dth e recordkeepin g an dreportin g requirements : .'"''•_.

- Lis t o f Subject s i n 4 0 CFRPart s 9 an d 6 3 Environmenta l protection , Ai r poUutio n control, . Hazardou s substances , Incorporatio n b y reference, Reportin g an drecordkeepin g requirements. Dated : Novembe

r 22,.1994 . Caro l M . Browner, Administrator. Fo r th e reasons se t

ou t i n th e preariible , title 40 , Chapte r I ofth e Cod e o f Federa l Regulation s i s amende da s se t fort hbelow . . PAR T9—[AMENDED ] 1 . Th e authorit y citatio n fo r par t 9 continue s t o reada s follows : * Authority : 7 U.S.C . 13 5 et

seq. , 1235-13Cy ; 1 5 U.S.C . 2001 , 2003 , 2005 , 2006 , 2601-2671 ; 2 1 U.S.C331J , 346a

, 348 ; 3 1 U.S. C 9701 ; 3 3 U.S.C . 125 1 e

t seq. , 1311,1313d , 1314,1321 , 1326,1330,1344,134 5 (d

) and(e) , 1361 ; E.O . 11735 , 3 8 F

R21243 , 3 CFR

, 1971-1975 ; Comp . p . 973 ; 4

2 U.S.C . 241 , 242b , 243 . 246 , 300f , 300g , 300g-l , 300g-2 , 300g-3 , 300g*-4 , 300g-5,300g-6 , 300J-1 , 300J-2 , 300J-3,3°°j*

- 4 , 300J-9,185 7 et

seq., 6901-6992k, 7401

- 7671q , 7542 , 9601-9657,11023,11048 . 2 . Sectio n 9.1-i s amende db y addin g ane w entr y t o th e tabl e unde r fee indicate dheadin g ir

i numerical ' orde r

t o readasfollows : * " .*'*' : ''.' . : - l «•• . • '. • § 9. 1 OM B approval s unde r th e Paperwor k - Reductio n Act . : ; . : . r.. : ., . - . 4 0 CF R citatio n OM B con- * tro l No
. *
. Nationa l EmissiohStandard s -;;;;'; * ••'./•';.<. ''y.- • ; fo rHazardou s A_,-polluto^.rv;'*';- : -.1'i u "' , '-"' : --;:' / ;;. ' (o r^ur<»jCateg6ries:':--: • < h)?: "' • 7*
. ['\Xjk.33

*'•'.. . . ^ . • .' * • • V ' ••* * *'•* ' • . •" . • - • * ' • " • ,-" •""• * . - .*'** * • ••' '.•*.,'* •••' •, . • " : 63.345-63.347 ; ;.V..;*:.„.„_.:A.._. S '•'•' . 206Crt32 7P.1 8

Federa l Registe r

/Vol . 60 , No . 1 6 /Wednesday , Januar y 25 , 199 5 7 Rule s ari dRegulation s .. . 4963 . 

## I PAR T63—{AMENDED ] 1 . Th e authorit y citatio n fo r par t 6 3 continue s t o reada s follows: . . Authority : 4 2 U.S.C . 740 1 e t seq. 2 . Sectio n 63.1 4 i s amende db y addin g paragraph s (b ) (4) an d(5 ) t o rea d a s follows : §63.1 4 Incorporatio n b yreference
.

* *
. * * * • (bj * * * . (4 ) AST M D1193-77 , Standar d Specificatio n fo

r Reagent Water , IB R approve dfo

r Metho d306 , sectio n 4.1. 1 an dsectio n 4.4.2 , of

appendi x A t o par t 63 . (5 ) AST M D 133.1-89 , Standar dTes t Method s fo

r Surfac e an dInterfacia l Tensio n o f Solution s o

f Surfac e Activ e Agents , IBRapprove dfo

r Metho d306B , sectio n 2.2 , sectio n 3.1 , an dsectio n 4.2 , of appendi x A t o part

63 . * * * * * • 3 . B y addin g ane w subpar t N t o read a s follows : Subpar t N—Nationa l Emissio n Standard s fo r Chromiu m Emission s Fro m Har d an d Decorativ e Chromiu m Electroplatin g an d Chromiu m Anodizin g Tank s Sec
. 63.34 0 Applicability an ddesignatio n o f sources . 63.34 1 Definition s an dnomenclature . 63.34 2 Standards . 63.34 3 Complianc e provisions . 63.34 4 Performanc e tes t requirement s an d • tes t methods . 63.34 5 Provision s fo

r ne w an d reconstructe dsources .

. 63.34 6 Recordkeepin g requirements . 63.34 7 Reportin g requirements . Tabl e 1 t o Subpar tN o f Par t63— . Genera l Provision s Applicabilit y t o Subpar tN . Subpart. N—Nationa l Emissio n Standard s fo r Chromiu m Emission s Fro m Har d an d Decorativ e Chromiu m Electroplatin g an d Chromiu m Anodizin g Tank s § 63.340 Applicabilit yan d designatio n o f sources. ' (a ) Th e affecte dsourc e t o whic hfee provision s of

thi s subpar t

appl y i s eac h chromiu melectroplatin g o r chromiu m anodizin g tan k

at faciUtie s performin g -har dchromiu melectroplating , .•.''."•'.* ' decorativ e chromiu melectroplating , o r chromiu manodizing;•• : ••

- (b)Owners'o r

operator s ofaffected.;.- ; source s subjec t

t o th e provision s o f

thi s subpar t mus t als o compl y wif

e fee •; ~

_.- • requiremerit s bf

subpar t A of thi s part,; : accordin g t o fee appUcabiUty o f subpar t - A o f "^ s part t o suc hsources , as.-;-^jj; . identifie di n Tabl e 1 o f

thi s subpart,- ? JJJ,

. (c ) Proces s tarik s associate dwit haf, ; chroriiiu melectroplatin g o r chromiuni:;; : . anodizin g process , bu t i n whic hneithe r chromiu melectroplatin g no r chromiu m anodizin g i s takin g place , ar e riot subjec t t o fee provision s o f

thi s subpart . Example s of

suc htank s include , bu t

ar e no t limite dto , rins e tanks , etchin g tanks , an dcleanin g tanks . Likewise , tank s tha t contai n achromiu msolution , bu t i n whic hn o electrolyti c proces s occurs , ar e no t

subjec t t o thi s subpart . A n exainpl e of

suc hatan k

i s achrom e . conversio n coatin g tan k

wher e n b electrica l curren t

i s applied . , - (d ) Affecte dsource s i n whic hresearch an dlaboratory operation s ar e performe d ar e exemp t

from fee provision s of

thi s subpar t whe n suc hoperation s ar e takin g place . •.-••• ' (e) Th e owne r

o r operato r of a n affecte dsourc e subjec t

t o fee requirements o f

thi s subpar t

i s require d t o obtai n atitl e V permi t

fro mth e - permittin g authorit y i n whic hth e affecte dsourc e i s located . § 63.34 1 Definition s an d nomenclature
. (a ) Definitions. Terrri s use di n thi s subpar t ar e define di n fee Act , i n subpar t A of thi s part , o r

i n thi s section . Fo r th e purpose s o f

subpar t N o f thi s • part , if th e sam e ter mi s define di n subpar t A o f thi s par t an di n thi s section , i t shal l hav e th e meanin g give n i n thi s section . Add-on air

pollution control

device mean s equipmen t

installe di n th e ventilatio n syste mo f

chromiu m electroplatin g an danodizin g tank s for . th e purpose s of

collectin g an d containin g chromiu memission s from thetank(s) . Air pollution control

technique mean s an y method , suc ha s a n add-o n ai r poUutio n contro l devic e or achemica l fume suppressant , feat

i s use dt o reduce chromiu memission s fromchromiun i electroplatin g an dchromiu manodizin g tanks . , Base metal

mean s th e meta l o r

riietal allo y tha t comprise s fee workpiece . Bath component

mean s fee trad e or.-. . bran dnam e o

f eac hcomponent(s ) i n .-••• ' trivalen t chromiun i platin g baths . Fo r . ; •* , trivialent chromiu mbaths , fee bat h-.-..• , compositio n i s proprietar y i n most . ,; . . cases . Therefore , fee trad e o r brand , nam e jfo r eac hcomponent(s ) ca n b e . used ; however , th e chemica l nam e o f 3. fee wettin g agen t

containe di n tha t

4 •;•.;,* ? componen t

mus t b e identified

- y : yJ3yyy Chemicalfume suppressant mean s ; J an y chemica l agen t

feat reduces or?-•'£;.;'..-; ; suppresse s fume s o r

mist s a t th e surface ; o f a n electroplatin g o r

anodizin g bath;"::; ; anothe r term.fo r fum e suppressan t

is : ; ", . ..mis t suppressant.:.- : ^>- 1 ;^% iiKs : :4y*-:-'U.v-.

-

. ^Chromi c acid

mean s the.coirimon.:.v: ^ nam e fo r chromiun i anhydrid e (Cr0 3 )r.;< • Chromium anodizing mean s th e * • electrolyti c proces s b y whic ha n oxid e laye r i s produce do n fee surfac e b f a bas e meta l for

functiona l purpose s (e.g. , corrosio n resistance o r

electrica l "• ' insulation ) usin g achromi c aci d solution . I n chroriiiu manodizing , th e par t t o b e anodize dact s a s fee anod e i n ' fee electrica l circuit , an dfee chromi c aci dsolution , wit haconcentratio n typicall y rangin g from5 0 t o 10 0 gram s pe r lite r (g/L) , serve s a s fee electrolyte . Chromium electroplating or. ' • .. . chromium anodizing tank mean s fee receptacle o r

containe r

i n whic hhar do r decorativ e chromiu melectroplatin g o r chromiu manodizin g occurs . - •- ' Composite mesh-pad

system mean s a n add-o n ai r

pollutio n contro l devic e typicall y consistin g of

severa l mesh-pa d stages . Th e purpos e o f

th e first stag e i s t o remov e larg e particles . Smalle r particle s ar e removedi n fee second . stage , whic hconsist s of

fee composit e mes hpad . A final stag e ma y remove an y reentraine dparticle s no t

collecte db y th e composit e meshpad . ,- . Decorative chromium electroplating mean s th e proces s b y whic hathi n laye r o f chroriiiu m(typicaUy 0.00 3 t o 2.5 . microns ) i s electrodeposite do n abas e metal , plastic , o r

undercoatin g t o provid e abrigh t

surfac e wit hwear

an d tarnis hresistance . I n thi s process , th e part(s ) serve s a s th e cathod e i n th e . electrolyti c cel l an dfee solutio n serve s a s th e electrolyte . Typica l curren t densit y appUe ddurin g thi s proces s . range s from54 0 t o 2,40 0 Amperes'pe r . squar e mete r

(A/m2 ) fo r tota l platin g times rangin g betwee n 0. 5 t o 5 minutes . Electroplating or

anodizing bath mean s fee electrolyti c solutio n use da s th e conductin g -mediu

mi n whic hfee flo w o f curren t i s accompanied.b y movemen t

of meta l ion s fo

r th e ; purpose s of

electroplatin g meta l ou t

o f th e solutio n ont o aworkpiec e o r for. . oxidizin g fee bas e iriateri.al . : Emission limitation mearis,fo r fee purpose s of

thi s subpart ; fee ' concentratio n of

tota l chromiu m'..•-" " allowe dt o b e emitte dexpresse dii i milUgram s pe r

dr y standar dcubi c mete r , (mg/dscm) , o r

fee allowabl e surfac e -

' • ' " ' tensio n expresse dindyne s per;;. - -*"'" ; "\

- centiinete r

(dynes/ah).' '•'••>'• '.' ' -•*•->.-'.'-

-~ r ' - •- . •Facility means feeihajorbr area"'; : V .'. ; ' sourc e a t whic hchromium : x *, 1; ' ;,: : ". 1 '•'' " electroplatin g o r

chromiu manodizin g i s = •'performed.':-'i;''--;.:^- ' '•^vi^v^^'-i'*

- :;i " * •'."'_..'. 'Fiberrbed

mist eliminator

Jneari s a n • •'•".': ; add-o n ai r

pollution^control^deyidethat'; . ; . removes contaminimt s from agais strea mv throug hfeemechanisriis of ; inertiai l •Vsht-^

i , impactio n an dBrownian ; diiHusioriT!t<;; : '*''j- > <:> . Thes e device s ar e typicaU y installed;,*.;•'•'' . , 1 • downstrearri^o f

ariotj_e r contro l device ; -;. ' .••'•: , whic hserve s t o preven t

plugging , ai)d* f;; ; 1



# w I ;



## •rt



# JP.1 9 

# 1 ;;4_64: . -Federal-Register ; / Vol / 60 , No . 1 6 /

Wednesday , Januar y 25 , 199 5 / Rule s an dRegulation s consis t o f on e o r mor e fiber

beds . Eac h be dconsist s o f

ahollo w cyUnde r forme dfromtw o concentri c screens ; th e fiber betwee n th e screen s may b e fabricate dfro

mglass , cerami c plastic , o r

. meta l - .-..

* '•*•..:.-.'• ' • ;•>.. '

. Foam blanket

mean s th e typ e o

f chemica l fum

e suppressan t

tha t generate s alaye r

o f foamacros s th e surfac e o f asolutio n whe n curren t

i s - applie dt o tha t

solution . Fresh water

mean s water , suc ha s ta p water , feat

ha s no t bee n previousl y use d i n aproces s operatio n or , i f fee wate r ha s bee n recycle dfromaproces s • * operation , i t

ha s bee n treate dan dmeet s fee effluent

giiideUne s fo

r chromiu m wastewater . *.'-•* . Hard chromium electroplating o r industria l chromiu melectroplatin g mean s aproces s b y whic hathic k laye r o f chromiu m(typicall y 1. 3 t o 76 0 microns ) i s electrodeposite do n abas e materia l t o provid e asurfac e wit h functiona l propertie s suc ha s wear . resistance, alo w coefficient o f friction , hardness , an dcorrosiori resistance. I n thi s process , th e par t

serve s a s fee cathod e i n th e electrolyti c cel l ari dth e solutio n serve s a s th e electrolyte . Har d chromiu melectroplatin g proces s i s performe da t

curren t densitie s typicall y rangin g from1,600 t o 6,50 0 A/m^ fo r tota l platin g times rangin g from2 0 minute s t o 3 6 hour s dependin g upo n th e desire dplat e thickness . . Hexavalent

chromium mean s th e for m o f chromiu mi n avalenc e stat e of+6 . Large, hard

chromium electroplating facility mean s afaciUt

y tha t perform s har dchromiu melectroplatin g an dha s a maximu mcumulativ e potentia l rectifier capacit y greate r

tha n o r equa l t o 6 0 millio n ampere-hour s pe r yea r (amp-hr / yr) . •: - . .,'• ' . " Maximum cumulative potential rectifiercapacity mean s thesummatio n o f fee tota l instaUe drectifie r capacity associate dwith ' th b har dchromiu m;•. . • electroplatin g tank s a t

afacility,, ; :-....••

• expresse di n amperes , multiplie db y th e maximu mpotentia l operatin g schedul e o f 8,40 0 hour s pe r

yea r an d0.7 , whic h assume s tha t

electrode s ar e energize d7 0 percen t ofth e tota l operatin g time . Th e maximu mpotentia l operatin g schedul e i s base do n operatin g 2 4 hour s pe r day , . 7 day s pe r

weef c 5 0 weeks.pe r

year , ..*. ; Operating parameter

value mean s a: ; • minimu mo r

maximu mvalu e yyt-tiJ^. : 3': establishe dfo r

acontro l devic e o r

" > .proces s paramete r

which , i f achieve db y itsel f o r i n combinatio n wit hon e o r * mor e othe r

operatin g paramete r

values , > determine s tha t

a n owne r

oroperato r

i s i n continua l compUanc e wit hth e - A-.y appUcabl e emissio n limitationo r ^ A '. staridard.sii)vri-V&v*:^*:4-:-'..::-'v>*»::l^-'v.'':. ' , Packed-bed scrubber mean s a n add-on ' ai r poUutio n contro l devic e consistin g of asingl e or

doubl e packe dbe dtha t contain s packin g medi ao n whic hth e chromi c aci ddroplet s impinge . Th e packed^be dsectio n o

f th e scrubbe r

i s followe db y amis t

eUminato r

t o remove an y wate r eritraine dfromth e packed

be dsection . Research or

laboratory operation means a n operatio n whos e primar y purpos e i s fo

r researchari d developmen t

of ne w processe s an d products , tha t

i s conducte dunde r

th e clos e supervisio n of

technicall y traine d personnel , an dtha t

i s no t involve di n fee manufactur e o

f product s fo

r commercia l sal e i n commerce , excep t i n aa e minimi s manner . Small, hard

chromium electroplating facility mean s afacility feat perform s har dchromiu melectroplatin g an dha s a maximu mcumulativ e potentia l rectifie r capacity les s tha n 6 0 milUo n amp-hr/yr . Stalagmometer

mean s adevic e use d t o measur e th e surfac e tensio n o f a solution . Surface tension mean s th e property , du e t o molecular

forces, tha t

exist s i n th e surfac e fil

mof a U liquid s an dtend s t o preven t

liqui dfromspreading . Tank operation mean s th e tim e i n whic hcurren t

and/o r voltag e i s bein g applie dt o achromiu melectroplatin g tan k o r achromiu manodizin g tank . Tensiometer

mean s adevic e use dt o measur e th e surfac e tensio n of a solution. . Trivalent chromium mean s fee for

m• of chromiu mi n avalenc e stat e of+3 . Trivalent chromium process mean s fee proces s use dfo

r electrodepositio n o f athi n laye r

o f chromiu mont o abas e materia l usin g atrivalen t

chromiu m solutio n instea dof

achromi c aci d solution . . Wetting agent

mean s th e typ e o f chemica l fum

e suppressan t

tha t reduces fee surfac e tensio n o f

aliquid . J

.1 (b ) Nomenclature. Th e nomenclatur e use di n thi s subpar t

ha s th e followin g meaning :

. (1 ) AMR=fee allowabl e mas s emissio n rat e fromeac htyp e ofaffecte dsourc e subjec t t o th e sam e emissio n limitatio n i n milUgram s pe r

hou r (mg/hr). ; (2) AMR

5y S =th e allowabl e mas s • emissio n rat e fromaffecte dsource s .*" : ' . controlle db y a n add-o n ai r pollutio n contro l devic e controllin g emissions: ; frommultiplejsource s i n mg/hr.^;•; ; : - .(3 ) EL=th e appUcabl e emission??; ; > f '\* '--tmitatipn.'^m^'eS.M^'in'jni-igianas^. . pe r dr y standar dcubi c mete r (nig/: * ! ; •

- ,dscm).;.- ; ':.";'.;- i ;•*;'* " i : ; -"-< ; *- ; ,•:;&-•--.•.'•;.*'?.';'•• ; (4 ) IAibi_=th

e Su mo f a U inle t duc t : J -^-> " area s frombot haffecte dari dnonaffected ; source s i n meter s squared . '•:• • :':. : • - ---• ; •'•-' : ; • (5 ) IDA-=th

e tota l inle t

are afo r al l duct s associate dwit haffecte dsource s i n meter s squared . (6) IDA,.a=th

e tota l inle t

duc t are afo r al l duct s conveyin g chromi c aci dfro m eac htyp e of

affecte dsourc e performin g fee sam e operation , o r

eac htyp e o

f affecte dsourc e subjec t

t o th e sarii e emissio n limitatio n i n meter s squared .

. (7 ) VR=th e tota l o f

ventilatio n rate s for eac htyp e o

f affecte dsourc e subjec t t o fee sam e emissio n limitatio n i n dry standar dcubi c meter s pe r minut e (dscm/min) . (8 ) VRtaic-sfe

e tota l ventilatio n rat e fromal l inle t

duct s associate dwif

e affecte dsource s i n dscm/min . (9 ) VRinkur-the tota l ventilatio n rat e fromal l inle t

duct s conveyin g chromi c aci dfromeac htyp e o

f affecte dsourc e performin g th e sam e operation , o r eac h typ e ofaffecte dsourc e subjec t t o the . sam e emissio n Umitatio n i n dscm/min . (10 ) VR, ot=th e averag e tota l ventilatio n rat e fo r th e thre e tes t

run s a s determine d at th e outlet

b y means o

f th e Metho d 30 6 i n appendi x A o f

thi s par t testing i n dscm/min . §63.34 2 Standards . (a ) Eac howne r

o r operato r of a n affecte dsourc e subjec t

t o th e provision s o f thi s subpar t

shal l compl y wit hthes e requirement s o n an dafte r th e complianc e date s specifie di n . § 63.343(a) . Al l affecte dsource s ar e regulate db y applyin g maximu m: achievabl e contro l technology . (b ) Applicability of

emission limits. (1 ) Th e emissio n limitation s i n thi s sectio n appl y onl y durin g tan k operation , an dals o appl y durin g period s o f startu p an dshutdow n a s thes e are routine occurrence s fo r affecte dsource s subjec t

t o thi s subpart . Th e emissio n limitation s d o no t appl y durin g period s of

malfunction , bu t

th e wor k practic e standard s tha t

addres s operatio n ari dmaintenanc e an dfeat ar e requiredb y paragrap h(f

) o f feis sectio n mus t b e followe ddurin g malfunctions . (2 ) I f a n owne r o r operato r i s - • - controlUn g agrou p of

tank s wit ha commo n add-o n ai r

poUutio n contro l device , fee emissio n limitation s o f paragraph s (c) , (d) , an d(e ) of thi s •;*. ' . sectio n appl y wheneve r

ariy.on e ' affecte dsourc e i s operated . The"•'" • emissio n Umitatio n tha t

applie s t o th e * - grou p o f affecte dsource s is: : ; v .. - *" ? _•'•" (i ) Th e emissio n limitatio n identifie d- i n paragraph s '(c);-(d),'an d(e) o f thi s '•' " - sectio n i f fee affecte dsource s ar e " * > '-"-• ' performin g th e sam e typ e o f operatio n •' (e.g. , har dchromiu melectroplating) , are . subjec t t o th e sam e emiission'limitatibn, / ari dar e no t

controlle dby.anadd^' n ai r V pollutio n contro l dewceals o controllin g honaffededsources ; -\i ;t V v .:..-';'. 'Federa l Registe r/Vol . % 6^,;:,No/^6*./;.^edhesJay,i'.Janaar y 25 . .199 5 ./.Ruie s arid,Regulation s .4965 . P.2 0

(ii ) Th e eriiissibr

i hmitatior i calculate d accordin g t o §6 3 344(e)(3 ) i f affecte d\ !

. •

• source s ar e performin g th e sam e typ e o f operation , ar e subjec t

t o th e sam e : emissio n limitation, ' an dar e controlle d wif e an add-o n ai r

pollutio n contro l . devic e tha t

i s als o controllin g nonaffecte dsources ; an d (iii ) Th e emissio n limitatio n '*.<,"•'

- calculate daccordin g t o § 63.344(e)(4 ) if affecte dsource s ar e performin g different type s o f operations , o r

affecte dsource s ar e performin g fee sam e operation s bu t 'J subjec t t o different

emissio n limitations, : an dar e controlle dwif

e a n add-o n ai r

: . > pollutio n contro l devic e tha t ma y also,. , b e controllin g emission s from.. . : nonaffecte dsources . (c)(1 ) Standards for

hard chromium . electroplating tanks. Durin g tan k operation , eac howne r

o r operato r o f a n existing,'new , o r

reconstructedaffecte d-

• sourc e shal l contro l chromiu m emission s discharge dt o th e atmospher e fromtha t affecte dsourc e b y no t allowin g th e concentratio n o f tota l chromiu mi n th e exhaus t ga s strea m discharge dt o th e atmospher e t o exceed : (i ) 0.01 5 milligram s o f

tota l chromiu m pe r dr y standar dcubi c mete r (mg/dscm ) of ventilatio n ai r

(6.6xl0~ 6 grain s pe r dr y standar dcubi c foot

[gr/dscf]) ; o r (ii ) 0.0 3 mg/dsc m(1.3X10- 5 gr/dscf ) if

th e har dchromiun i electroplatin g tank i s a n existin g affecte dsourc e an di s locate dat asmall , har dchromiu m

. electroplatin g facility.

- . (2)(i ) A n owne r

o r operato r may demonstrat e th e siz e o

f ahar d chromiu melectroplatin g facility throug hth e definition s i n § 63.341(a) . Alternatively , a n owne r

o r operato r of a facility Wit

ha'maximu mcumulativ e , potentia l rectifie r

capacit y o f

6 0 millio n arnp-hr/y r

o r mor e inay b e considere d. smal l i f th e actua l cumulativ e rectifie r capacit y i s les s tha n 6 0 millio n amp-hr/ . y r a s demonstrate dusin g th e followin g procedures : (A) I f records sho w tha t

th e faciUty' s previou s annua l actua l rectifier capacity , wa s les s tha n 6 0 millio n ariip-hr/yr , b y usin g nonresettabl e ampere-h r meter s an dkeepin g monthl y records of actua l . . ampere-h r

usag e fo r eac h12-mpnf

e rollirig perio dfollowin g th e cornplianc e

- dat e i n accordanc e wit h§ 63-346(b)(12) . Th e actua l cumulativ e rectifier capacit y : •

. for fee previous ; 12-monf

e rollin g perio d '• shallb e tabulate dmonthl y b y addiri g : • fee capacit y fo

r th e curren t

mont ht o th e capacitie s for

th e previousill'"month's; ,

.. . {Bjfiyacoepthi g afederal - . ; : : - : priforceabl e limi t

on : fee riiaxiinuni* f curiiulatiy e potentia l rettifier capacity , i of a\har dchroirilu melectroplatin g facility throug hth e title V permi t - require db y § 63.340(e),an dby"..': . v '•'." • biainfairiirij j monthl y ^record s in* . •"": ' * accordanc e with-.§-63-.346(b)(.12 ) t o " demonstrat e tha t

th e limi t ha s no t bee n exceededJTh e actua l cumulativ e rectifie r capacit y fo

r th e previou s 12

- monthrollin g perio dshal l b e tabulate d monthl y b y addin g th e capacit y for th e curren t mont ht o fee capacitie s for th e previou s 1 1 months . (ii ) Onc e th e monthl y records . requiredt o b e kep t

b y §63.346(b)(12 ) an db y thi s paragrap hshow : tha t th e actua l cumulativ e rectifie r capacit y over th e previou s 12-monthrollin g perio d correspond s t o th e larg e designation , th e owne r o r Operator i s subjec t t o th e emissio n liinitatio n identified : i n paragrap h(c)(l)(i ) bf

thi s section , i n accordanc e wit hth e complianc e schedul e o f

§ 63.343(a)(5) . (d) Standards for

decorative chromium electroplating tanks using a chromic acid

bath and chromium anodizing tanks. Durin g tan k operation , eac howne r

o r operato r o f a n existing , new , o r reconstructe daffecte dsourc e shal l contro l chromiu memission s discharge dt o th e atmospheire fromtha t affecte dsourc e b y either:

- (1 ) No t allowin g th e concentratio n o f tota l chromiu mi n th e exhaus t ga s ; sfrea mdischarge dt o fee atmospher e t o excee d0.0 1 riig/dscm(4.4x10 ~ 6 gr / dscf) ; o r - (2 ) I f achemica l fume suppressan t containin g awettin g agen t i s used , b y no t allowin g th e surfac e tensio n of th e electroplatin g o r

anodizin g bat h containe dwithi n th e affecte dsourc e t o excee d4 5 dyne s pe r

centimete r

(dynes / cm ) (3.1x10 ~ 3 pound-forc e pe r foot (lbf / ft] ) at ariy time durin g operatio n o f th e tank. ' . (e) Standards for

decorative chromium electroplating tanks using a trivalent chromium bath.(l) Eac howne r o r operato r o f a n existing , new , o r reconstructe ddecorativ e chromiu m- electroplatin g tan k

feat iise s atrivalen t chromiu mbat hfeat

incorporate s a wettin g agen t

a s abat hingredien t

i s - subjec t t o th e recprdkeepiri g an d reportin g requirement s o f . § § 63.346(b)(14 ) an d63.347(i) , bu t ar e no t subjec t t o th e work

practic e . ..'..

- reqiiireriierits o f

paragrap h(f

) ofthi s section , o r

fee continuou s compUanc e monitpriri g requirement s i n § 63.343(c) . Th e wettin g agen t

mustbear i ingredien t ':in th e tiiyateritchroiniuni bath';?•'•;*. * J ;'••• • component s purchase dfromvendors. ' ; ; ( 2 J Eac howne r

o r operato r o f a n ; /' ; exiiting , ribW, orreconstructe dJ-'JJyj''3 .decorativ e chromiu meleC-bpiatin g ' * J: 'y tan k feat use s atiiv^enf

<__;pmiiur

i bat h tha t doe s no t incorporat e awettin g V-VJ . ; agen t a s abat hingredien t

i s subjec t

t o J~ > th e standard s o f

paragrap h(d)o f

this . •;-.- "section.-'•• • '.:• ':. J-'..i:y3yJJ,yy'JJJ••'•''. .' . (3 ) liac howne r o r operato r o f existing , new , o r reconstructe ddecorativ e : chromiu melectroplatin g tan k tha t had . bee n usin g atrivalen t

chromiu mbat h tha t incorporate s awettin g agen t an d' cease s usin g thi s typ e of

bat hnius t fulfil l th e reporting requirements o f . § 63.347(i)(3 ) an dcompl y wif e th e appUcabl e emissio n limitatio n withi n th e timeframe specifie di n § 63.343(a)(7) . - : (f ) Work practice standards. Th e wor k practic e standard s of

feis sectio n addres s operatio n an dmaintenanc e

. practices . Al l owner s o r

operator s subjec t t o th e standard s i n paragraph s (c ) an d(d ) ofthi s sectio n ar e subjec t t o thes e wor k practic e standards . . . (l)(i ) A t al l times , includin g period s o f startup.shutdowfi , an dmalfunction , owner s o r operator s shal l operat e an d maintai n an y affecte dsource , includin g associate dai r

pollutio n contro l device s an dmonitorin g equipment , i n amarine r consisten t wif e goo dai r pollutio n contro l practices , consisten t wit hth e operatio n an dmaintenanc e pla n requiredb y paragrap h(f)(3 ) o f thi s section . • . . (ii ) Malfunction s shal l b e correcte da s soo n a s practicabl e afte

r thei r occurrenc e i n accordanc e wit hth e operatio n an dmaintenanc e pla n require db y paragrap h(f)(3 ) ofthi s section . (iii ) Operatio n an drnainten.anc e - requirement s establishe dpursuan t t o sectio n 11 2 ofth e Ac t

ar e enforceable . independen t

bf emission s limitation s or othe r requirements'in relevan t • standards . ' . ; -" * (2)(i ) Determinatio n o

f whethe r ,"; acceptabl e operatio n an dmairitenanc e procedure s ar e bein g use dwil l b e based o n infonnatio n availabl e t o fee Administrator , whic hinay include , bu t i s no t Umite dto , monitorin g results; revie w o f fee operation.an d maintenanc e plan , procedures , an d. records ; an dinspectio n ofth e source . '. . (ii).Base do n th e results of a\. ' . determinatio n mad e under , paragrap h (f)(2)(i) ofthi s section , fee . . ; ; Administrato r

ma y requir e tha t

a n owne r o r operato r of a n affecte dsourc e mak e change s f

o fee. operatio n an d. * v ' . maintenanc e pla n require dbyparagrap h (f)(3 ) o f thi s sectiori for

featsource.'* -

. "Revision s ma y bejequire'di f the"•; • ': Administrato r

finds tha t

fee plan: ; : (A ) Doe s ho t addres s amalfunction ' ; tha t ha s occurred;/••'•.*::•'' , ' .*

' .. ' , . " 3'' \ ; ;(B ) Fail s t o provid e for fee qperatiq n -J. of fee affecte dsource ; fee air'poUution ' ' contro l techniques, ' o r

th e contro l -

1 'V;. ; : syste man dprocessriibnitoring; . : - ' * i .* " equipmen t

durin g amalfunctio n i n a'.'. '
, manne r consisten t

wit hgoo dai r

; • .^ y iV- ; ! ; pollutio n contro l practices ; o r '"'".^'..r.v''- '-496 6 Federa l Registe r/ Vol . 60 , No . 1 6 /

Wednesday , Januar y 25 , 199 5 / Rule s an dRegulation s P.2 1
(C) Doe s no t

provid e adequat e . procedure s fo

r correctin g malfunctionin g proces s equipment , ai r pollutio n contro l techniques , o r monitorin g equipmen t

a s quickl y a s practicable . • (3 ) Operation and

maintenance plan. (i ) Th e Owne

r o r operato r o f a n affecte d sourc e subjec t

t o th e wor

k practice s o

f paragrap h(f

) ofthi s sectio n shal l prepar e a n operatio n an dmaintenanc e pla n t o b e implemente dn o late r tha n th e complianc e date . Th e pla n shal l b e incorporate db y referenc e int o th e source' s titl e V permi t

an dshal l includ e fee followin g elements : (A ) Th e pla n shal l specif

y fee operatio n an dmaintenanc e criteri afo r fee affecte dsource , fee add-o n ai r pollutio n contro l devic e (if suc ha devic e i s use dt o compl y wit hfee emissio n limits) , an dfee proces s an d contro l syste mmonitorin g equipment ; an dshal l includ e astandardize d checklis t t o documen t

th e operatio n an d maintenanc e of

thi s equipment ; (B ) Fo r source s usin g a n add-o n ai r pollutio n contro l devic e o r monitorin g equipmen t

t o compl y wif

e thi s subpart , th e pla n shal l incorporat e th e wor k practic e standard s fo

r tha t devic e o r monitorin g equipment , asidentifie di n Tabl e 1 ofthi s section, , if th e specifi c equipmen t

use di s identifie di n Tabl e 1 ofthi s section ; (C) I f th e specifi c equipmen t

use di s no t identifie di n Tabl e 1 O

f thi s section , fee pla n shal l incorporat e propose d work practic e standards . Thes e propose dwork

practic e standard s shal l b e submitte dt o fee Administrato r fo r approva l a s part

o f fee submitta l requiredunde r

§ 63.343(d) ; (D) Th e pla n shal l specif

y procedure s t o b e followe dt o ensur e tha t equipmen t o r proces s inalfunction s du e t o poo r maintenanc e o r

othe r preventable , condition s d o no t

occur ; an d (E ) Th e pla n shal l includ e a' systemati c procedur e fo

r identifyin g malfunction s o f proces s equipment,. . -.• add-o n ai r

pollutio n contro l devices , an dproces s an dcontro l syste m monitorin g equipmen t

an dfor implementin g correctiv e action s to . addres s suc hmalfunctions . (ii ) I f fee operatio n an dmaintenanc e pla n fail s t o addres s o r

inadequatel y addresse s a n even t

tha t meet s fee " characteristic s o

f amalfunctio n at

fee tim e fee pla n i s initiall y developed , th e owne r o r operato r shal l revise th e operatio n an dmaintenanc e pla n withi n 4 5 day s afte

r suc har i even t occurs . Th e •revise dpla n shal l includ e procedure s fo r operatin g an dmaintainin g fee proces s equipment , add-o n ai r pollutio n contro l device , or

monitorin g equipmen t durin g similar

malfunctio n events , an d aprogra mfo

r correctiv e actio n fo

r suc h events."-

- (iii ) Recordkeepin g associate dwit h th e operatio n an dmaintenanc e pla n i s identifie di n § 63.346(b) . Reportin g -.' associate dwithfee operatio n and . maintenanc e pla n i s identifie di n § 63.34 7 (g

) an d(h) an dparagrap h (f)(3)(iv) o f feis section . (iv ) I f action s take n b y fee owne r o r operato r durin g period s of

malfunctio n are inconsisten t

wit hfee procedure s specifie di n fee operatio n ari d• maintenanc e pla n require db y paragrap h (f)(3)(i) O f thi s section , th e owne r

o r operato r shal l recor dfee action s take n . . fo r tha t even t an dshal l repor t

suc h action s withi n 2 workin g day s after commencin g action s inconsisten t wit h th e plan- . Thi s report

shairbe.followe d b y alette r withi n 7 workin g day s after th e en dof

fee event , unles s fee owne r : or operato r make s alternativ e reporting arrangements , i n advance , wit hth e •-.''

- Administrator . (v) Th e owne r

o r operato r shal l kee p fee writte n operatio n an dmaintenance . pla n o n recordafte

r i t i s develope dto. , b e mad e availabl e fo

r inspection , upo n request, b y th e Administrato r for fee lif

e o f th e affecte dsourc e o r

unti l fee source : i s n o longe r subjectt o fee provision s of • ' thi s subpart . I n addition ; if th e * • • operatio n an dmaintenanc e pla n i s revised , th e owne r

o r operato r shal l • kee p previou s (i.e. , superseded ) version s ofth e operatio n an dmaintenanc e pla n o n recordt o b e inad e availabl e fo r . inspection , upo n request, b y fee Administrato r

fo r aperio dof

5 year s after eac hrevisio n t o th e plan . (vi ) T o satisf

y th e requirement s of

. paragrap h(f)(3 ) o f

feis section, ' fee owne r o r operato r may us e applicabl e standar doperatin g procedur e (SOP) manuals , Occupationa l Safet y an d HealthAdministratio n (OSHA) plans , o r othe r existin g plans , provide dth e alternativ e plan s mee t

fee requirements ofthi s section . (g) Th e standard s i n thi s sectio n tha t appl y t o chromi c aci dbath s shal l no t b e ' me t b y usin g areducing agen t t o chang e fee for mof chromiu mfromhexavalen t t o trivalent . §63.343 Complianc e provisions . (a ) Compliance dates. (1 ) Th e owne r o r operato r of a n existin g affected-sourc e shal l corripl y wit hth e emissio n limitation s i n § 63.34 2 a s follows : ' • •. ' (i ) N o late r

thari 1 yea

r after January 25,1995 , i f

th e affecte dsourc e i s a ; decorativ e chromiu melectroplatin g • • tank ; an d (ii ) N o late r

tha n 2 year s afte

r January 25,1995 , if

th e affecte dsourc e i s ahar d chromiu melectroplatin g tan k o r a chromiu manodizin g tank . (2 ) Th e owne r

o r operato r o f ane w o r reconstructedaffecte dsourc e tha t ha s a n initia l startu p afte

r Jariuary 25,1995 , shal l compl y immediatel y upori istartup of th e source . Th e owne r

o r operato r o f ane w o r reconstructe daffecte dsource . tha t ha s a n initia l startu p after , Decembe r

16,199 3 bu t

before January 25,1995 , sha

U follo w th e compUanc e schedul e o

f § 63.6(b ) (3 ) an d(4)..... .

• - . ' ••-•- . ."-•'..•- . •••-•• •• -.-.- . Contrb l technique : -'• ' Composite mesh-pa d (CMP ) ter n

Packed-be d scrubbe r (PSB )

- — -..._ > s TABL E 1 T O §63:342.-*--_OMMAR Y O F WOR KPRACTIC E STANDARDS ; ; r

sys -



### . _

-

- Wor k practice standard s 1 Visuall y inspec

t device to ensur

e there i s prope r drainage , n o chroni c aci d huildu p o n th e pads , an d n b evidence of chemica l attac k o n th e structura l integ rit y o f th e device 2 Visuall y inspec

t bac k portio n o

f th e mes h pa d closes

t t o th e fa n t o ensur

e ther e i s n o breakthroug h o

f chromi c aa d mist . 3 Visuall y inspec

t ductwor k

fro m tan k

t o th e contro l devic e to ensur e ther e ar e n o 4 . Perfor m washdown o f th e composit

e mesh-pad s tn accordance wit h manufac turers recommendation s 1 . Visuall y inspec

t device t o ensur

e ther e i s prope r drainage , n o chromi c aa d buildu p o n th e packe d beds , an d n o evidenc e o f chemica l attac k

o n th e structura l integrit

y o f th e devic e - v . 2 Visuall y inspec

t bac k portio n o

f th e chevro n blad e mis t eliminato r t o ensur

e tha t i t i s dr y an d ther

e i s n o breakthroug h ot chromi c aa d mis t •- * 3 Sam e a s numbe r 3 abov e •J':^"';', '.':• ' :.';-•'• . . . Frequenc y .1.1/quarter.*.....- . ' '



### - 2 1/quarte r , r 3 1/quarte r 4 Pe r manufacture r

• » 1 1/quarte r 

### * • v 2 1/quarte r i » 3 1/quarte r ^Federa l Registe r /Vol
. 6(T, No
. 1 6 / Wednesday , Januar

y25 , 199 5 /

Rule s ari d Regulation s 496 7

. TABL E 1 T

O §63.342.—SUMMAR YO F WOR KPRACTIC E STANDARDS—Continue d Contro l techniqu e Wor k practic e standard s Frequency 4
. Ad d fres h makeu p wate rt o th e to p o f th e packe d be d • PBS/CM P syste m
Fiber-be d mis t elirhinator c

Ai rpollutio n contro l devic e (APCD ) no t liste d i n rule
. 1
. Sam e a s fo rCM P syste m .....: . 2. Sam e a s fo rCM P syste m .'
. :.... . : '. 3
. Sam e a s fo rCM P syste m .... . 4
. Sam e a s fo rCM P syste m : .:. . 1
. Visuall yinspect fiber-be d uni t an d prefilterin g devic e t o ensur e ther e i s prope r drainage , n o chromi caci d buildu p i n th e units , an d n o evidenc e o f chemica l at tack o n th e structura l integrit yo f th e devices
. 2
. Visuall yinspect ductwpr Kfro m tan k o rtank s t o th e contro l devic e t o ensur e ther e ar e n o leaks
. 3
. Perfor m washdow n o f fibe relement s i n accordanc e wit h manufacturer s rec ommendations
. T o b e propose d b yth e sourc e fo rapprova l b yth e Administrato r 4
. Wheneve rmakeu p i s

. added. ' 1.1/quarter
. 2 ; 1/quarter
. 3.1/quarter
. 4,
. Pe rmanufacturer
. 1.1/quarter
. 2.1/quarter
. 3
. Pe rmanufacturer
. T o b e propose d b yth e sourc e fo rapprova l b yth e Administrator
. Monitorin g Equipmen t Pito t tube
. Stalagmometer
. Backflus h wit h water , o rremov e fro m th e duc t an d rinse wit h fres h water . Replac e i n th e duc t an d rotat e 18 0 degree s t o ensur e tha t th e sam e zer o readin g i s ob tained
. Chec k

pito t tub e ends fo rdamage
. Replac e pito t tub e i f cracke d o rfa tigued
. Follo wmanufacturer s recommendation s ; . *
.... . 1/quarter
.

•I f greate rtha n 5 0 percen t o f th e scrubbe rwate ri s draine d (e.g. , fo rmaintenanc e purposes) , makeu p wate rma yb e adde d t o th e scrubbe r basin
. • . b Fo rhorizontal-flo wscrubbers , to p i s define d a s th e sectio n o f th e uni t directl yabov e th e packin g medi a suc h thatth e makeu p wate rwoul d flo wperpendicula rt o th e ai rflo wthroug h th e packing
. Fo rvertical-flo wunits , th e to p i s define d a s th e are a downstrea m o f th e packin g materia l suc h thatth e makeu p wate rwoul d flowcountercurren t t o th e ai rflo wthroug h th e unit
. ic'-•***.: ' cWor k practic e standard s fo rthe
. contro l devic e .installe d upstrea m o f th e fiber-be d mis t eliminato rt o preven t pluggin g d o no t appl ya s kin g a s th e wor k practic e standard s fo rth e fiber-be d uni t ar e followed
. (3 ) Th e owne r

o r operato r o f a n existin g are asourc e feat

increase s actua l o r potentia l emission s o f

hazardou s ai r pollutant s suc htha t

th e are asourc e become s amajo r

sourc e mus t

compl y wif e fee provision s fo

r existin g majo r sources , includin g fee reportin g provision s o f

§ 63.347(g) , immediatel y upo n becomin g amajor

source . (4 ) Th e owne r

o r operato r o f ane w are asourc e (i.e.,-an are asourc e fo r whic hconstructio n o r

reconstructio n wa s commence dafter

Decembe r

16 , 1993 ) tha t increase s actua l o r

potentia l emission s O

f hazardou s ai r

pollutant s suc htha t th e are asourc e become s a major sourc e mus t

compl y wit hth e provision s for

ne w majo r

sourcies, ; immediatel y upo n becomin g amajor source-' . ~ •

' -", V ' (5 ) An.owne r

o r operato r o f ar i existin g har dchromiu melectroplatin g tan k o r tank s locate dat

asmaU , har d chromiu melectroplatin g faciUt y tha t .. . increase s itsmaximumcumulativ e - -potentia l rectifier

capacity , orit s actua l . v

. cumulativ e rectifie r

capacity ; suc htha t

.'•; . th e facility become s alarge , har d; -',-. . ±,.:-_ chromiun i efectroplatiri g fadlit y mus t compl y wit hfee requirement s of : . . § 63.342(c)(l)(i).fo r

al l har dchromiu m electroplatin g tanksa t

feefacility n o late r tha n 1 yea r

after fee morif e i n •:'-.-.' . - whic hmonthl y record s requiredb y • § § 63.342(c)(2 ) an d63.346(b)(12 ) sho w that th e larg e designatio n i s met . (6) Request

for an extension of compliance. A n owne r

o r operato r o f a n affecte dsourc e o r

source s tha t

request s a n extensio n of

compUanc e shal l d o s o i n accordanc e wif

e thi s paragrap hand

th e applicabl e paragraph s of § 63.6(i) . Whe n fee owne r

o r operato r i s requestin g th e extensio n for mor e tha n on e affecte dsourc e locate da t fee faciUty , the n onl y on e request ma y b e submitte dfo

r al l affecte dsource s a t

th e facility . (i ) Th e owne r

o r operato r o f a n . , existin g affecte dsourc e wh o i s unabl e t o compl y wif

e arelevan t

standar dunde f thi s subpar t

ma y reques t

tha t fee Administrato r

(o r aState-whe n fee Stat e ha s a n approve dpar t 7 0 permi t programan dfee sourc e i s requiredt o obtai n apar t

7 0 permi t

unde r tha t . prograrii , o r

aState , whe n fee Stat e ha s bee n delegate dfee authorit y t o . : implemen t

an denforc e fee emissio n /Jstandar dfo

r tha t source ) gran t

a n '.-J.-3.-_ extensio n aUovwn

g th e owne r

or , .y_y_s-.3 operato r u p t o 1 additiona l year

to ; :. - „;.- ; compl y wif

e th e standard.fo r

the/X--*^i--: • • affecte dsource . Th e owne r o r operato r

r , ; i o f a n affecte dsourc e wh o ha s requeste d\ ariexiensio n of

complianc e underthis> . M paragrap han di s ofeerwis e requiredt o S. i obtai n atitl e V permi t

fo r fee sourc e r

. ; shal l appl y fo r

suc hpermi t

br'appl y to : , • hav e th e titl e V permi t revise dt o incorporat e fee condition s of th e extensio n of

compliance . Th e • condition s o f

a n extensio n o f

' compUanc e grante dunde r feis paragrap hwil l b e incorporate dint o th e owne r o r operator's-titl e V permi t

for th e affecte dspurce(s) accordin g t o th e • provision s o f

4 0 CF Rpart 7 0 o r 4 0 CF R par t -71 , whicheve r

i s appUcable . (ii ) An y reques t

unde r thi s paragrap h• fo r a n extensio n o f

complianc e wit ha relevan t standar dshal l b e submitte di n writin g t o fee appropriat e authorit y no t " late r tha n 6 month s befor

e fee affecte d source' s compUanc e dat e a s specifie dir i thissection . -'.';••* . ' • • (7 ) A howne r

o r operato r o f B T".:' . v ^ ; . decorativ e chromiu melectroplatin g • ... * - tank tha t use s atrivalen t

chromiu mbat h tha t incorporate s awettin g agent , arid•'.:/:" • tha t cease s usin g fee trivalen t chromiu mr process , mus t

compl y withth e emissio n ,...*- , limitatio n no w applicabl e t o fee tank*.. . •_.._• withi n 1 ycaMofswitching.bathv',.!'., . j;'•' * •'•.' operation.. . , - \.J'^._.-•-'•-J''S''.y'.-.-'.''.'•'.••'•''•,

. (b) Method

s todemgnstitttainitialJsf^ii * . compliance..Q) Excep t

a s provide din« i ;paragraiphs'(b)(2 ) an d(b)(3 ) ofthi s >.-. );:« •'••}•'. ^ection ; an ; owheroroperatorofaj t •?.-;.;'y . Effected,sourc e subjec t

t o fee<«^*i-^;Af,'ji.'. ••'-• t requirepient s ofthi s subparti s required*:']: : t o conduc t

a n initia l performanc e tes t as- , -:required:under

| § 63.7 , usin g the*.'* . - J

v -P.2 3

496 8 Federa l Registe r/ Vol . 60 , N0M 6 /

;Wedriesday; ; ^

-i t • i!j " 

# V 

# i r 

# 1 procedure s an dtes t method s Uste dir

i §63. 7 an d§63.344 . (2 ) I f fee owne r

o r operato r of a n affecte dsourc e meet s al l of fee following criteria , a n initia l performanc e tes t

i s no t requiredt o b e conducte dunde r

thissubpart : (i ) Th e affecte dsourc e i s adecorativ e chromiun i electroplatin g tan k o r a chromiu manodizin g tank ; an d (ii ) A wettin g agen t

i s use di n fee platin g o r anodizin g bat ht o inhibi t chromiu memission s from fee affecte d
_. source ; ari d (iii ) Th e owne r

o r operato r complie s wif e th e appUcabl e surfac e tensio n limi t o f § 63.342(d)(2 ) a s demonstrate d throug hfee continuou s compUanc e monitorin g requiredb y paragrap h (c)(5)(ii ) o f feis section . (3 ) I f fee affecte dsourc e i s a decorativ e chromiu melectroplatin g tan k usin g atrivalen t

chrorniu mbath , an dth e owne r

o r operato r i s subjec t t o . th e provision s of

§ 63.342(e) , a n initia l performanc e tes t

i s no t require dt o b e conducte dunde r

thi s subpart . (c ) Monitoring to demonstrate continuous compliance. Th e owne r o r operato r o f a n affecte dsourc e subjec t t o * th e emissio n limitation s ofthi s subpar t

. shal l conduc t

monitorin g accordin g t o th e typ e of

ai r pollutio n contro l techniqu e feat

i s used.t o compl y wit h th e emissio n limitation . Th e monitorin g require df o demonstrat e continuous 7 •••-. . complianc e wit hthe>emissio n limitation s i s identifiedi n thi s sectio n for fee a hpollutio n contro l technique s . expecte dt o b e use db y th e owner s o r operator s o

f affecte dsources . (1 ) Composite mesh-pad

systems, (i ) Durin g fee initia l performanc e test, th e owne r o r operato r of a n affecte dsource , o r agrou p o

f affecte dsource s unde r commo n control , complyin g wit hth e emissiorulimitation s i n § 63.34 2 throug h th e us e o f acomposit e mesh-pa dsyste m shal l determin e th e Outlet chromiu m.'.. ' concentratio n usin g fee tes t method s an dprocedure s i n § 63.344(c) , an dshall ' establis ha s asite-specifi c operatin g : .-..paramete

r th e pressur e .dro p acrossth e systerii , settin g th e valu e that:. 'JJ' ... JJ 3 ',".'•* . correspond s t o compUanc e wif e fee IjJJJ, applicabl e emission.limitation,usin g • ; . th e procedure s in § 63.344(d)(5):Ari 'JJiM'1 owne r o r operato r may conduc t

multiple. ; J performanc e test s t p estabUs harang e o f complian t

pressur e dro p values , o r ma y se t a s fee complian t

valu e th e average;' ; pressur e dro p jheasure doye r fee threeV ; •*

= tes t run s o f on e performanc e les t

and " "- "

. accep t ± 1 inc ho f

water-'-colum

n from feis vahie.a s fee coriipliari f range . (ii ) Orian dafter

fee dat e o n whic hth e initia l performanc e tes t

i s requiredt o b e : complete dunde r

§63.7 , fee owne r

o r operato r of a n affecte dsource , o r

grou p ofaffecte dsource s unde r coirimo n •

• control , shal l monito r

ari drecor dfee - pressur e dro p acros s th e composit e mesh-pa dsyste mbric e eac hda y tha t an y affecte dsourc e i s operating . T o b e ir i complianc e wif

e fee standards , fee composit e mesh-pa dsyste mshal l b e operate dWithi n ± 1 inc ho f water - : colum n of

fee pressur e dro p valu e establishe ddurin g th e initia l performanc e test , o r

shal l b e operate d withi n fee rang e o f

complian t

value s fo r pressur e dro p establishe dduring ' ; multipl e performanc e tests. ".'.' (2 ) Packed-bed

scrubber systems, (i ) Durin g fee initia l performanc e test , th e owne r o r operato r o f a n affecte dsource ; o r grou p of affecte dsource s unde r commo n control , complyin g wif e fee - emissio n limitation s i n § 63:3.42 throug h th e us e of apacked-be dscrubbe r

syste m shal l determin e fee outle t chromiun i concentratio n usin g fee procedure s i n § 63.344(c) , an dshal l estabUs ha s site

specifi c operatin g parameter s fee - pressur e dro p acros s fee syste man dfee velocity pressur e at

fee commo n inle t

of th e contro l device , settin g fee valu e tha t correspond s t o complianc e wit hfee applicabl e emissio n limitatio n usin g fee procedure s i n § 63;344(d ) (4 ) an d(5) . A n owne r o r operato r may conduc t

multipl e performanc e test s t o establis harang e o f compUan t

operatin g paramete r

values . :• Alternatively , th e owne r oroperato r may se t a s th e compUan t

valu e fee '•••'• averag e pressur e dro p an dirile t velocity pressur e measure dove r

th e thre e tes t rurt s of on e performanc e test , ari daccep t ± 1 inc hof

wate r colum n fromfee pressur e dro p valu e an d±1 0 percen t • from fee velocity pressur e valu e a s fee complian t range . -*•"*' (ii ) O n an dafter

fee dat e o n whic hth e initia l performanc e testi s require dt o b e complete dunde r

§ 63.7 , fee owne r

o r -* ; operato r of a n affecte dsource , o r

grou p o f affecte dsource s unde r

common . ; control , shal l monito r

an drecord fee • velocity pressur e a t

fee inle t t o fee . i packed-be dScrubber

an dth e pressur e : dro p acros s fee scrubbe r syste mpric e ;-.. eachda y feat

an y affecte dsourcei s openfting . T o b e ih.cbmpliianc<e wife ; fee • standards , fee scrubbe r

system.shal l b e

- operated ; withir i ±1 0 percen t o f th e • •* . -J;j • velocity pressur e Valu e establishe d>-.: : durin g fee initia l performanc e test , arid ••/ . ; withinit l inc ho f

water:columr i b f

fee:; i ;'-' pressur e dro p valu e estatUshe ddiuih g fee initia l performanc e testi ; ory-rithin; . ' -fe e rarigeofeoriipUa ^ paramete r

value s estabUshed;duririg :< ';- ; multipleperforriiancetests l ^33;.y'3^ {3) Packed-bed

scrubber/compdsit&JJ mesh-padsystem. Th e bwrie r 'otJ-JyyJ/ operato r of a n affected^sori^e^ori^pup; ; o f affectedsource s under ; commo n -vV . j. control , feat

use s apacked-be dscrubbe r i hconjunctioti wit hacomposit e mesh

pa dsystemt o mee t

th e emission'.'''. ' limitations.o f

§ 63.34 2 shal l compl y wif e fee riiohitpring requirement s fo r composit e mesh-pa dsystem s a s identifie di n paragrap h(c)(1 ) ofthi s section . (4 ) Fiber-bed

mist eliminator, (i ) Durin g th e initia l performanc e test , fee owne r o r operato r o f a n affecte dsource , o r grou p o f affecte dsource s unde r commo n control , complyin g wif e fee emissio n limitation s i n §63,34 2 throug h th e us e of afiber-bedmis t

eliminato r shal l determin e th e outle t chromiu m concentratio n usin g th e procedure s i n § 63.344(c) , an dshal l establis ha s asite

specifi c operatin g paramete r fee pressur e dro p acros s fee fiber-bedmis t eliminato r

an dth e pressur e dro p acros s fee contro l devic e installe dupstrea mof th e fiberbe dt o preven t

plugging , settin g fee valu e tha t

correspond s t o complianc e wif

e th e applicabl e emissio n Umitatio n usin g fee procedure s i n § 63.344(d)(5) . A n owrie r o r operato r ma y conduc t

multipl e performanc e test s t o establis harang e of complian t

pressure'dro p values , o r may se t a s fee complian t

valu e fee averag e pressur e dro p measure dOve r fee thre e tes t run s o f on e performanc e tes t

an d accep t ± 1 inc ho f

wate r colum n from

. feis valu e a s fee complian t range . (ii ) Orian dafter

fee dat e o n whic hth e initia l performanc e tes t

i s requiredt o b e • complete durider'§63.7 , fee owner , o r operato r of a n affecte d.source , o r

grou p o f affecte dsource s unde r

common •'__ • control , shal l monito r

an drecor dth e pressur e dro p acros s fee fiber-bedmis t eliminator , an dth e contro l devic e installe dupstrea mof

fee fiber be dt o preven t plugging , onc e eac hda y tha t an y affecte dsourc e i s operating . T o b e i n complianc e wit hfee standards , fee fiber-bedmis t

eliminato r

an dth e " upstrea mcontro l device ; shal l b e ' operate dwithi n ± 1 inc hb f wate r : colum n of

fee pressur e dro p valu e . * establishe ddurin g fee initia l . .'•"' . performanc e test , o r

shaljh e operate d. withi n th e rang e o f

corhplian t

value s for : pressur e dro p establishe ddurin g . \ • multipl e performanc e tests.. . , (5 ) Wetting agent-type or

combination wetting agent-type)foam blanket fume suppressants, (i ) Durin g fee initia l performanc e te^t , fee bwrier o r operator. .

. of a n affecte dsburc e complyin g wif e th e emissiof

f liriiitatibri s i n § 63.342,-.''.' ; , . throug hth e vise o f

awettiri g agerit'i hfee elefctroplatingb r

anodizin g bat hshall ; . determirieth e outle t

chromiu m'" '_"•__

'.' . '.' • : 4 concentratib n usin g th e procedure ? in ' • ; • ." § 63.344(c) . Th e owne r

or.opbratbr,shall , establis ha s th e site-specifi c operating" , parariiete r

th e surfac e terisiori ofth e ,'' , bat husin g Metho d306B , appendix , A ofFedera l Registe r/ Vol . 6Q , ^.1 6 /-Wednesday;-Januairy:25^ ^ thi s part , settin g th e maximu mvalu e tha t correspond s t o compUanc e wif e fee appUcabl e emissio n limitation . InUe u o f estabUshin g fee maximu msurfac e tensio n durin g fee performanc e test , fee owne r o r operato r ma y accep t

4 5 dynes / c ma s th e maximu msurfac e tensio n valu e tha t correspond s t o complianc e wif e th e appUcabl e emissio n limitation . However , fee owne r

o r operato r is : .:; : exemp t fromconductin g aperformanc e tes t onl y if fee criteri ao f

paragrap h (b)(2 ) o f tins sectio n ar e me t (ii ) O n an dafter

th e dat e o n whic hth e initia l performanc e tes t

i s require dt o b e complete dunde r

§ 63.7 , fee owne r

o r operato r o f a n affecte dsourc e shal l monito r fee surfac e tension of

fee electroplatin g o r

anodizin g bath . Operatio n o f

th e affecte dsourc e a t

a surfac e tensio n greate r

tha n th e valu e establishe ddurin g th e performanc e test , o r greate r tha n 4 5 dynes/cm.i f

fee owne r p r operato r i s usin g thi s valu e i n accordanc e wif

e paragrap h(c)(5)(i ) of thi s section , shal l constitut e noncomplianc e wif

e fee standards . Th e surfac e tensio n shal l b e monitore d accordin g t o th e followin g schedule :

. (A ) Th e surfac e tensio n shal l b e measure dpric e every 4 hour adurin g operatio n of

th e tan k wit ha: stalagmomete r

o r atensiomete r

a s specifie di n Metho d306B , appendi x A of thi s part .

... IJB ) Th e time betwee n monitorin g ca n b e increase dif

ther e hav e bee n n o exceedances . Th e surfac e tensio n sha U b e riieasuredonc e every 4 hour s of tan k operatio n for fee first

4 0 hour s of

tan k operatio n after

fee complianc e date . Onc e ther e ar e n o exceedance s durin g 4 0 hour s of

tan k operation , surfac e tensio n measuremen t

ma y b e conducte d onc e every 8 hour s o f

tan k operation . Onc e ther e ar e n o exceedance s durin g 4 0 hour s of

tan k operation , surfac e tensio n measuremen t

ma y b e conducted.

- onc e every 4 0 hourso f

tan k operatio n o n a n ongoin g basis , unti l a n exceedanc e occure . Th e minimu m frequency of

monitorin g allowe db y thi s subpar t i s onc e ever y 4 0 hour s of tan k operation . (C) Onc e a n exceedanc e occur s a s . indicate dthroug hsurfac e tensio n monitoring , th e origina l monitorin g schedul e of

once.evejy . 4 hour s mus t b e resumed. A subsequen t

decreas e ir

i -•*'.

- frequenc y shal l follo w th e schedul e laidJ ou t inparagraph(c ) (5 ) (ii)(B ) of thi s ». - < '•

- -section: ; Forexampleii f an;bvmeror?i; y •- . •operato r ha dbeenmonitorin g a n .- j * ;i i • -.affecte dsourc e onc e ever y .40 hour s an d

- j Jan.exceedanc e occurs- , subsequen t 3 •_.3 J .',., ' monitorin g wouldtake i plac e onceevery -

... . ^hour s o f

tan k operation . Onceji n : ; , exceedanc e doe s notbcc«_pip_4 0 hour s J oftan k operation ; riionitoring ca n occu r onc e every 8 hour s o f tan k operation . .* ; Onc e a n exceedanc e doe s no t occu r for : 4 0 hour s of

tan k operatio n br

i thi s *; • -:,".v. schedule , monitorin g ca n occu r onc e every 4 0 hourso f

tan k operation . • (iii ) Onc e abat hsolutio n i s draine d fromfee affecte dtan k

an dane w solutio n added , fee origina l monitorin g schedul e o f

onc e every 4 hour s mus t

b e resumed , wit hadecreas e i n monitorin g frequency allowe dfoUowin g feeprocedure s of

paragraph s (c)(5)(h ) (B ) • an d(C) o f

thi s section . (6) Foam blanket-type fume -•' . suppressants, (i ) Durin g fee initia l performanc e test , fee owne r o r operato r o f a n affecte dsourc e complyin g wit h fee emissio n limitation s i n § 63.34 2 throug hfee us e o f

afoa mblanke t

i n fee electroplatin g o r

anodizin g bat hshal l determin e fee outle t

chrbmiu m concentratio n usin g th e procedure s i n § 63.344(c) , an dshal l estabUs ha s th e . site-specifi c operatin g paramete r fee thicknes s o f

th e foa mblanket , settin g th e riiinimumthicknes s feat correspond s t o compUanc e wif e fee applicabl e emissio n limitation . I n tieu o f establishin g fee minimu mfoa m blanke t thicknes s durin g th e performanc e test , th e owne r o r operato r may accep t

2^5 4 centimeter s ( 1 inch ) a s fee minimu mfoa

mblanke t thicknes s . feat correspond s t o compUanc e wit hfee applicabl e emissio n limitation , Al l foa m blanke t measurement s mus t

b e take n i n clo^ e "proximit

y t o fee workpiec e o r cathod e are ai n fee platin g tank(s) . (ii ) O n an dafter

th e dat e o n whic hfee initia l perfonnanc e tes t

i s require dt o b e complete dunde r

§ 63.7 , th e owne r

o r operato r o f a n affecte dsourc e shal l JJy" monito r th e foa mblanke t thicknes s of th e electroplatin g o r

anodizin g bath . Operatio n ofth e affecte dsourc e a t a foa mblanke t thicknes s les s tha n th e •_ valu e establishe ddurin g th e . performanc e test , o r

les s tha n 2:5 4 c m•'-.. ( 1 inch ) i f fee owne r

o r operato r i s usin g - thi s valu e i n accordanc e wif e paragrap h (c)(6)(i ) of thi s section , shal l constitut e • noncompUanc e wit hth e standards . Th e foa mblanke t thicknes s shal l b e ; . measure daccordin g t o th e foUowin g ! ''schedule:---.-.'

- -'•- . '•

• 'k:."_.;3' ; ' y'yyy •'.•• (A ) Th e foamblankettiu'c__ies s shall ; i b e riieasuredonc e ever y 1 hou r o f tan k f •operation,'". . •'-.-yJ.-H: ^^WVyi'^'^Jy^^JJ (B ) Th e tim e betwee n monitorin g ca n b e increase dif

ther e hav e bee n no'•;-- >J$£ <

- exceedances . Th e ;foamblanket-*i ; f p-y3;y^t } thicknes s shal l b e rriea5siB^bhc*:every ^ hou r of tan k operatio n for

the-firs t 40-*

- hour s o f tan k operatio n afte r

the -lioSr^ktC

. oompUanc e -date . Onc e ther e ar e •rib ? '£ - s ; -exceedance s for

io^ureb f

tan k -33 J3 '•-. Qperationv foamblankefcthic"*taess^%4 £ measurementtnayiie:condubted-bnc e % : every 4 hour s of

tan k operatlbhVOnc e 0; ; ther e tire-n o -exeeOTimCiBs-duitag'4f > C"'• • hourso f tan k operation ; fcten\blanke t

" thicknes s rtieasureinent

ma y b e * \~' .". conducte donc e every 8 hbur S of tan k • operatio n o n a n ongoin g basis , until.a n exceedanc e occurs . Th e riiinimum' • ;- : • frequenc y b f

monitorin g allowe db y feis subpar t i s oric e pe r

8 hour s of

tank f ; . , operation." : • ; .: : _;•-''••'-'•;';'•':/' : ;''' : ''"''- \ ,-. : (CJOnceanexceedancebccbrs,as;- v indicate dthroug hfoa

mblanket ' '•• .?•'

. thicknes s monitoring , th e priginal,••.:' • • • monitorin g schedul e of

onc e every hou r mus t b e resumed . A subsequent' : .>.'~, . decreas e i n frequency shal l follo w th o schedul e lai dou t

i n paragrap h. - ; .•':••*;

. (c)(6)(ii)(B ) o f

thi s section . Fo r

example , if a n ownero r

operato r ha dbeep".-iss

- V monitorin g a n affecte dsourc e onc e every 8 hour s an dan,exceedarice.' . •••' * •• ' occurs , subsequen t

mo n itorin g woul d 'take/plac e bnc e every hou r o f tan k -,y operation . Onc e a n exceedanc e doe s no t occu r for 4 0 hour s o f

tank operation , •

• . monitorin g ca n occu r

onc e every 4 : , ' . hour s of tan k operation . Onc e ah.•:.

- . exceedaric e doe s no t

occu r for, r40 hour s . oftan k operatio n o n thi s schedule/V, : monitorin g cari.occuronc e every 8 .-* . hour s o f tan k operation , A

- - :;:•• ; *

. (iii ) Onc e abat hsolutio n i s drained.. . fromth e affecte dtan k

an dahe w ,.

.'.__'• ' solutio n added , fee origina l monitorin g schedul e o f

onc e every hou r

mus t b e resumed , wit hadecreas e i n monitorin g frequency allowe dfollowin g fee ' "'• procedure s o f

paragraph s (c)(6)(ii)1(B ) ~ an d(C) o f

feis section . -

• ••'• ''"•'•'• ' (7 ) Fume suppressant/add-on.control device, (i ) I

f theowne r

o r operato r o f a n affecte dsourc e use s bot hafume '• *,

- ' suppressan t

an dadd-o n contro l devic e ari dbot har e heede dt o compl y wit hfee appUcabl e emissio n limit , monitoring

requirements a s identifie di n paragraph s (c ) (1 ) throug h(6 ) of

thi s section , arid . . th e work practic e standard s of

Tabl e 1 o f § 63.3427:appl y for

eac ho f th e contro l •technique s used . ', . • ;•' " ••'"'.

- ;.•'"':' • •'-•; '•'. ' •- .

- . (ii)Iffe e owne r

o r operato r o f a n •; • '•• " affecte dsourc e use s bot ha'fume-J.*?-.!''• . suppressan t

an dadd-o n cpntrb l device , tu t onl y on e of

thes e technique s is;

- ;

- f <" ' neede dto compl y wif

e fee applicable'<

- emissio n limit , monitorin g requirements • a s identifie di n paragraph s (c)(l):*-f;V 3 ; ' . throug h(6 ) of.thi s section , an dworki^i;;-J' . piac^r aistandiaixlsb f

Table.1-pXf^?

- •-•

• 1 : §63i342,,apply.onl y for fee corit^l:^-" ' J" ; • -.t^__i^e'-^t6'AchleVe''<£iDa^li^c£C'^' : ^'method: /(i)Requests -ridiapp^'valsfqFf'f' *' . alterri-tiv e riteriitbring method s shal l be' . corisldeiedinaccordanc e wif e ;•-;'i ;
. ? ;'-.ri; . ; §63«(f)(l);;(Q(3);i(0(4);:and'{f)(^e^« V 3 , :i ^^ ;i(ii)-Afte r

receipt^^an

dconsideratio n o f

.. ; reArappUcatibrifor.an filtefriatiye i.V-'f WAK. . - -inicmitbririgmefeod;^^feeAdiriiriistratb r ' - ma y approv e alternative s to * an y - • ' --} 1

- 4 ' • %P.2 5

J-***:} ' ^i^:& : : tfed ^ 60,^b:-a6i^-:W?dnesd_y ; ;Japuary?25 U 199& . /Rule s arid

- Regulation s ••' .



### ft-*


## fc



# m :

m... t i -. - 

# i ; riibriitbring method s o r prbcedure s o f

• •:. tUi s subpar t

iriicluding , bu t

riot limite d to , feefollbwing: -J .-.-•_(A)^Alternativ e monitorin g . requirements whe n installatio n o r us e of monitorin g device s specifie di n thi s subpar t woul driot

provid e accurat e 'measurement s du e t o interference s cause db y substance s withi n th e effluerit gases ; Pi*'' ' -: - (B ) Alternativ e location s fo r installin g monitorin g device s whe n fee owne r o r operato r car i demonstrat e tha t

- '•'••• installatio n a t

alternat e location s wil l eriabl e accurat e ari drepresentative • ^measurements,'/'.'.. ' ;":;';: : " ;; '-

- jjj^r" * '•'•', . (d ) A n owne r

o r operato r wh o use s ar i ai r pollutio n contro l devic e no t liste di n thi s sectio n shal l submi t

adescriptio n o f fee device , tes t

results collecte di n accordanc e wif

e § 63.344(c ) verifyin g th e performanc e q

f fee devic e fo

r . .reducin g chromiu memission s t o fee atmospher e t o fee leve l require db y feis subpart , acop y of

fee operatio n an d maintenanc e pla n referenced, iri . ' § 63.342(f ) includin g propose dwor k practic e standards , an dappropriat e operatin g parameter s tha t wil l b e v •>'.'

• monitore dtoestablis hcontinuou s complianc e wif

e fee standards . Th e monitorin g pla n submitte didentifyin g ' , ..fe e continuou s Cbriipliaric e monitorin g i s subjec t t o th e Administrator' s approval/ . §63.344 Performanc e tes t requirement s ; an dtes t methods . . (a ) Performance test

requirements. Perforirianc e test s shal l b e conducte d usin g fee tes t

mefeod s an dprocedure s i n thi s sectio n an d§ 63.7 . Performance , tes t result s shal l b e documente di n complet e tes t

reports feat

contai n fee ' informatio n requiredb y paragraph s (a)(1 ) throug h(a)(9 ) o f

thi s section . Th e tes t pla n t o b e followe dshal l b e mad e availabl e t o fee Administrato r prio r t o - fee testing , i f

requested. ; i (1 ) A brie f proces s description ; : (2 ) Samplin g locatiori description(s) ; (3 ) A descriptio n o f

sampUn g en d_:'--. *•

• analytica l procedure s an dan y x-JJJ-U- ; ; - modification s t o standar dprocedures ; 3 •;_cA4)Te&i!^ts_;jx;r£:^ (5 ) QuaUt y assuranc e procedure s ari d .' • reSUltS|'.,&; _-.. : : : 'y: *: 'i':Ji^-';, ; <; ;s*"4-'.';V;3-

- ^J-JTJI

.. '(6);Recbrd s of'.operatin g coriditions r .; v durin g th e test , preparatio n of yJ-J^Jl- :.l-

. standards , an dcaUbratio n procedures ; . ; (7 ) Ra w dat asheet s for

fieldsanipUn g an dfieldan dlabbratoryianalyses ; ij-vi4

- *.*..; ' (8 ) Documentatio n of.calculations;; •___ , "

- ;. ' andy'Jyj:..fJi J:- • -*

; '•^-^•• y & :**!-r#

t ^ /v '*'-'

- (9 ) Any^pfeermfqimatiori.required . by , .tlie't&tirieiihpi ^ (b)(1 ) I f th e owne r

o r operato r q f ah : v j affecte dsourc e conduct s performance : testin g a t startu p t o obtai n a n operating ; pemi t i n tiie Stat e ir

i whic hfee affecte d sourc e i s located , th e results''-of suc h testin g may b e use dt o demonstrat e complianc e wif

e thi s subpar t

if : (i ) Th e tes t

method s an aprocedure s identifie di n paragrap h(c ) of thi s sectio n wer e use ddurin g fee performanc e test ; (ii ) Th e performanc e tes t

wa s conducte dunde r

representativ e operatin g condition s for fee source ; (iii ) Th e performanc e tes t repor t contain s fee element s requiredb y paragrap h(a)'o f

thi s section ; an d (iv ) Tne . Owne

r o r operato r o f fee affecte dSourc e fo

r whic hfee perfonnanc e tes t

Wa s conducte dha s sufficien t dat at o establis hth e operatin g paramete r

value(s ) tha t

correspon dt o complianc e wif

e th e standards , a s require dfo

r continuou s complianc e monitoriri g unde r

§ 63.343(c) . ,(2 ) Th e results of

test s conducte d prio r t o December

199 1 i n whic h Metho d306A ; appendi x A ofthi s part , wa s use dt o demonstrat e th e performanc e of

acontro l techniqu e ar e no t acceptable . , '••-.'• r 1 ; (c ) Test

methods. Eac howne r

or. : operato r subjec t t o fee provision s ofthi s subpar t an drequire db y § 63.343(b ) t o conduc t a n initia l performanc e tes t shal l us e th e tes t

method s identifie di n thi s section , t o demonstrat e complianc e wit h th e standard s i n § 63.342. (1 ) Metho d30 6 o r

Metho d306A ,

. "Determinatio n o f

Chromiu mEmission s Fro mDecorativ e an dHar dChromium . Electroplatin g an dAnodizin g Operations, " appendi x A of thi s par t shal l b e use dt o determin e fee chromiu mconcentratio n fromhar do r decorativ e chromiu melectroplatin g tank s o r chromiu manodizin g tanks . Th e sampUn g time an dsampl e volum e fo r eac hri mo

f Method s 30 6 an d306A , appendi x A of

thi s par t shal l b e a t

leas t 12 0 minute s an d1-7

0 dsc m(6 0 dscf) , respectively . Mefeod s 30 6 an d3Q6A, appendi x A o

f thi s par t allo w th e ..": . measuremen t

of eithe r tota l chromiu m o r hexavalen t

chromiu memissions . Fo r fee purpose s o f

thi s standard , source s usin g chromi c aci dbath s can ; demonstrat e compUanc e wit hfee - ; ' emissio n Umit s of

§ 63.34 2 by- ; : . measurin g either.totalchromiurr i o r J3 hexavalen t

chro*hium

^ Hence , fee ;U!r: : . hexavalen t

chromiu mconcentratio n ' : ; measure db y thes e mefeod s i s equa l t o fee tota l chromiu mconcentratio n for 'y:. th e affecte dbpemtions^^v^A?"^--'

- - (2 ) Th e Californi aAi r

Resources.

- ,--•"• . Board(CARB ) Metho d42 5 (whic hi s : - availabl e b y contactin g fee GaUfornia:; : Ai r Resource s Board;^ 110 2 Q Street,: . Sacrariientp , Califprriii a95814 ) may b e ; > used;tb;determin e th e chromium*: ; :;.'.';;• • concentratiori fromhar dan ddecorativ e chromiu melectroplatiri g tank s an d chromiu manodizin g tank s if fee . followin g condition s ar e met : (i ) I f acbloiimetri c analysi s metho di s used , th e samplin g time , an dvolum e shal l b e sufficient

t o ifesul t i n 3 3 t o 6 6 microgram s of

catc hi n fee samplin g train . . ' ''.". ' (ii ) I f Atomi c Absorptio n Graphite ' Furnac e (AAGF

) o r Io n Chromatograph y wit haPost-colum n Reacto r (ICPCR) ; analyse s wer e used , fee samplin g time ' an dvolum e shoul db e sufficien t t o result i n asampl e catc hfeat

i s 5 t o 1 0 time s fee minimu mdetectio n limi t o f th e analytica l metho d(i.e. , 1. 0 microgrampe r

lite r of sampl e for

AAG F an d0. 5 microgrampe r

lite r o f sampl e .fo r ICPCR) . •

• - • . (iii ) I n th e cas e o

f eithe r paragrap h (c)(2 ) (i ) o r

(ii ) o f thi s section , a minimu mo

f 3 separat e run s mus t

b e .conducted . Th e othe r

requirements o f

' • § 63. 7 feat

appl y t o affecte dsources , a s indicate di n Tabl e 1 of

thi s subpart , mus t als o b e met . (3 ) Metho d306B , "Surfac e Tensio n Measuremen t

an dRecordkeepin g fo

r Tank s Use da t

Decorativ e Chromiu m Electroplatin g an dAnodizing ' Facilities, " appendi x A o f feis part shal l b e used.t o measure.th e surfac e tensio n ( - o f electroplatin g an danodizin g baths . • (4 ) Alternat e tes t

mefeod s ma

y als o b e use di f th e metho dha s bee n validate d usin g Metho d301 , appendi x A ofthi s part an di f approve db y th e Administrator . Procedure s fo r ' : requestin g an dobtainin g approva l ar e containe di n § 63:7(f) . (d ) Establishing site-specific operating parameter

values. (1 ) Eachowne r

or ' operato r requiredt o establis hsite

specifi c operatin g parameter s shal l •" ' ! follo w fee procedure s i n thi s section . (2 ) Al l monitorin g equipmen t shal l b e installe dsuch-feat

representative measurement s o f

emissiori s o r

proces s -

. parameter s fro

mfee affectedsourc e ar e ' obtained . Fo r

monitorin g equipmen t purchase dfromavendor , verificatio n b f th e operationa l statu s of

fee inpnitorin g equipmen t

shal l includ e executio n of ' fee manufacturer' s written'

- •' ''.:'.•..;.•-. ' specification s o r

recommendations for . installation , operation , an dcalibratio n *.,'• • .o f fee system . '•'.;*;•' ••'*.*'

• ..'•"•' • .:'" • •'• • •'"•.',"1,'•,' : (i ) Specification s for

differential . ; . , pressur e measurerrien t

device s use dto": . measur e velocit y pressur e shal l b e iri;". " ' • accordanc e wif

e sectio n 2: 2 of

Metho d 2 (4 0 CF Rpart 60,'appendi x A), ' . ";""•'.'"*: '
, .(ii ) Specificatio n to r

differential . '''••'' pressur e riieasuiement' device s use dt o • • measur e pressur e dro p jacros s acontro l systeinshaUbeihaccordaricewit h••;;'*. ; manufacturer' s accurac y specifications . (3 ) Th e surfac e tensio n of v ':

- ; v '' ' ; electroplatiri g an danodizin g bath s shal l -Federa l Registe r /VoL ; 60 , No^iey-/ ; Wednesday s Januar y >25; * 199 5 .*'/. ; Rule s arid ; Regulation s ; 497 1 b e measure dusin g Metho d306B , ' -••* : "Surfac e Tensio n Measuremen t an d Recordkeepin g for . Tank s use dat ^ Decorativ e Chromiu mElectroplatin g *-. : an dAnodizin g FaciUties, " appendi x A ofthi s part . Thi s metho dshoul dals o b e followedwhe n wettin g agen t typ e o r combinatio n wettin g agent/foamblanke t typ e fiime suppressant s ar e use dt o contro l chromiu memission s froma har dchromiu melectroplatin g tank ari d surfac e tensio n measuremen t i s conducte dt o demonstrat e continuou s compUance . (4 ) Th e owne r

o r operato r o f asourc e require dt o measur e fee velocit y ..'*•-.'. • pressur e a t

fee inle t t o a n add-o n ai r pollutio n contro l devic e i n accordanc e with ' § 63.343(c)(2) , shal l establis hfee site-specifi c velocit y pressur e a s follows : (i ) Locate avelocit y travers e por t i n a sectio n o' f straigh t duc t tha t cbnriect s fee hoodin g o n fee platin g tan k o r tank s wif e th e contro l device . Th e por t shal l b e locate da s clos e t o fee contro l syste m a s possible , an dshal l b e place da. minimu mo f

2 duc t diameter s downstrea man d0. 5 diamete r upstrea m o f an y flo w disturbanc e suc ha s abend , expansion , o r

contractio n (se e Metho d 1 , 4 0 CF Rpar t 60,'apperidi x A) . I

f 2. 5 diameter s o f

straigh t duc t work doe s no t exist , locat e th e por t

0. 8 o f th e duc t diamete r downstrea man d0. 2 ofth e duc t diamete r upstrea mfroman y flo w disturbance . (ii ) A 12-poin t

velocit y travers e o f

fee duc t t o th e contro l devic e shal l b e conducte dalon g asingl e axi s accordin g t o Metho d2 (4 0 CF

Rpar t 60 , appendi x A ) usin g ar

i S-typ e pito t

tube ; measuremen t

ofth e barometri c pressur e an dduc t temperatur e at

eac htravers e poin t i s no t required, bu t

i s suggested . Mar k fee S-typ e pito t

tub e a s specifie d i n Metho d1 (4 0 CF

Rpar t 60 , appendi x A ) wif e 1 2 points . Measur e fee velocit y pressur e (Ap) value s fo

r th e velocity poirit s an drecord . Determin e fee squar e root ofth e individua l velocit y poin t A p value s an daverage . Th e ppin f wif e fee squar e roo t

valu e tha t

comes closes t

t o , fee averag e squar e roo t

valu e i s th e poin t of averag e velocity . Th e A p valu e measure dfo

r thi s poin t

durin g fee performanc e tes t

Will b e use da s th e ' reference for

futur e monitoring . (5 ) Th e owne r o r operato r o f asourc e . require dt o measur e fee pressur e dro p acros s th e add-o n ai r

pollutio n contro l devic e i n accordanc e wif e § 63.343(c ) (1 ) throug h(4 ) ma y establis hth e pressur e dro p i n accordanc e wit hfee followin g guidelines : •'.'' * *..., : (i ) Pressur e tap s shal l b e installe da t an y o f th e followin g locations : (A ) At fee inle t an doutle t

o f th e '". : contro l system . Th e inle t

ta p shoul db e installe di n th e ductwor k jus t prio r t o th e contro l devic e an dth e correspondin g outle t

pressur e ta p shoul db e installe do n fee outlet sid e o f fee contro l devic e prio r

t o fee blowe r

o r o n th e downstrea msid e o f fee blower ; (B ) O n eac hsid e o f

fee packe dbe d withi n th e contro l syste mo r o n eac h; sid e of eac hmes hpa dwife mth e contro l system ; o r (C) O n th e front

sid e ofth e first

mes h pa dan dbac k

sid e ofth e las t

mes hpa d withi n th e contro l system . (ii ) Pressur e tap s shal l b e site dat location s feat

are : (A ) Fre e frompluggag e a s possibl e ari daway froman y flo w disturbance s suc ha s cycloni c demisters . (B ) Situate dsuc htha t

n o ai r infiltratio n at

measuremen t

sit e wil l occu r tha t coul dbia s fee measurement . (iii ) Pressur e tap s shal l b e constructe d of eithe r polyethylene , polybutylene , o r othe r nonreactiv e materials . . (iv ) Nonreactiv e plasti c tubin g shal l '. b e use dt o connect , fee pressur e taps , t o th e devic e use dt o measur e pressur e drop...-' , . . ; . ; . . ' (v ) An y o f

fee followin g pressur e gauge s ca n b e use dt o monito r pressur e drop : amagneheUc'gauge , a n incline d. . manometer , o r

a"U " tub e -nanometer . (vi ) Prio r t o connectin g an y pressur e line s t o th e pressur e gauge(s) , eac h gaug e shoul db e zeroed . Nb calibratio n of fee pressur e gauge s i s required; (e ) Special

compliance provisions for multiple sources controlled by a *,. common add-on air

pollution control device. (1 ) Thi s sectio n identifie s procedure s fo r measurin g fee outie t

chromiu m; ' concentratio n fromar

i add-o n air / poUutio n contro l devic e tha t i s use dt o ; : contro l -multipl e source s tha t ina y o r ma y no t includ e source s no t

affecte db y thi s subpart. ; ?J'J-J'i !-.J.-3 : -< : ..->J '•'• -3, (2 ) Whe n multipl e affecte dsource s V performin g th e sam e typ e o f operatio n (e.g. , al l ar e performin g har dchromiu m

electroplating) , an dsubjec t t o th e sam e emissio n limitation, " ar e controlle dwit h a n add-o n ai r

pollutio n contro l devic e tha t i s no t controllin g emission s from an y othe r typ e ofaffecte doperatio n o r froman y nonaffecte dsources , fee applicabl e emissio n limitatio n identifie di n § 63.34 2 mus t b e me t at th e outle t ofth e add-o n ai r

pollutio n contro l device . (3 ) When-multipl e affecte dsource s performin g fee sam e typ e o f operatio n an dsubjec t

t o fee sam e emissio n limitatio n ar e controlle dwif e acommo n add-o n ai r

pollutio n contro l devic e that i s als o controllin g emission s from source s no t

affecte db y thes e standards , th e followin g procedure s shoul db e followe dt o determin e complianc e wit h th e applicabl e emissio n limitatio n i n §63.342 : -

- (i ) Calculat e th e cross-sectiona l are ao f eac hinle t duc t (i.e. , uptake s fro

meac h hood ) includin g thos e no t affecte db y th e standard . • (ii ) Determin e fee tota l sampl e tim e pe r tes t ru n b y dividin g th e tota l inle t are afromaUtank s connecte dt o fee contro l syste mb y th e tota l inle t are afo r al l duct s associate dwif

e affected . sources/an dthe n multipl y thi s numbe r by" 2 hours . Th e calculate dtirn e i s th e minimu msampl e time require dpe r tes t run. " (iii ) Perfor mMetho d30 6 testin g an d calculat e an outle t

mas s emissio n rate. (iv ) Determin e fee tota l ventilatio n rat e fromth e affecte dsource s b y usin g equatio n 1 : VR,^X_ IDA i =V R



### _ > inlc l 

## (

D tota l wher e VR t ai s fee averag e tota l '

• - ventilatio n rat e i n dscm/mi n for fee thre e tes t run s a s determine da t

th e outle t b y mean s of

fee Metho d30 6 testing ; IDA

* i s th e tota l inle t

are afo r al l duct s associate dwit haffecte dsources ; IAto
_ i i s fee su mo f

al l inle t duc t area s froiri bot haffecte dan dnonaffecte d'.

- , sources ; an dVR-nie

, i s fee tota l •'*./.' * ventilatio n rat e frorn al l inle t duct s - associate dwif

e affecte dsources . _y>.-- . .* • (v) Establis hth e allowabl e mas s ' emissio n rate o f

fee-system(AMRsys

) i n milligram s o

f tota l chromiu mpe r

hou r (mg/hr ) usin g equatio n 2 : - ' ' 

# 1 ; S i

_ £VR int ax E Lx 6 0 minutes/hour s = AMR sy s (2 ) wher e I VR,

n ie i i s fee tota l ventilatio n rate i n dscm/mi n from fee affecte d

. sources , an dE

Li s fee applicabl e emissio n UmitaUo n from§ 63.34 2 i n mg/dscm . Th e allowabl e mas s emissio n rat e (AMR sys ) calculate dfromequatio n 2 shoul db e equa l t o o r

les s tha n th e outle t three-ru n averag e mas s emissio n rate- . determine dfro mMetho d30 6 testin g i n orde r fo r fee sourc e t o b e i n complianc e wit hfee standard . 'P.2 7

497 2 Federa l Registe r / Vol . 60 , No . 16 /

Wednesday ; Januar y 25 , 199 5 /Rule s an dRegulation s



# I } (4 ) Whe n multipl e affecte dsource s

performin g different

type s o f operation s (e.g. , har dchromiu melectroplating , decorativ e chromiu melectroplating , o r chromiu manodizing ) ar e controlle db y acommo n add-o n ai r

poUutio n contro l devic e feat

may o r may no t als o b e controllin g emission s fromsource s no t affecte db y thes e standards , o r i f fee affecte dsource s controlle db y th e commo n add-o n ai r

poUutio n contro l devic e perfor

mfee sam e operatio n bu t are.subjec t

t o different

emissio n limitation s (e.g. , becaus e on e i s ane w . har dchromiu mplatin g tan k an don e i s a n existin g small , har dchromiu m platin g tank) , fee followin g procedure s shoul db e followe dt o determin e complianc e wif

e fee appUcabl e emissio n limitatio n i n § 63.342 : (i ) Follo w th e step s outline di n paragraph s (e)(3)(i ) throug h(e)(3)(iii ) o f thi s section . •(ii ) Determin e fee tota l ventilatio n rat e for eac htyp e of

affecte dsourc e usin g equatio n 3 : .IDA

VR t(X X '• " ±VR inku i (3 ) :£lA 10U d wher e VRu

* i s th e averag e total

ventilatio n rat e i n dscm/mi n fo r th e

. thre e tes t

run s a s determine da t

fee outle t b y mean s o

f th e Metho d30 6 testing ; IDAi, ai s th e tota l inle t duc t are a fo r al l duct s conveyin g chromi c aci d. fromeac htyp e o

f affecte dsourc e performin g th e sam e operation , or eac h typ e o f affecte dsourc e subjec t

t o th e sam e emissio n limitation ; IAio_ i i s th e Su mo f al l duc t area s frombothaffecte d an dnonaffecte dsources ; an dVRmieu i i s th e tota l ventilatio n rat e fromal l inle t duct s conveyin g chromi c aci dfromeac h typ e o f affecte dsourc e performin g fee sam e operation , o r

eac htyp e o

f affecte d v sourc e subjec t

t o th e sam e emissio n •limitation.;.-" . ;.-

• .- •••• • • _-. - -.-•_(iii ) Establis hth e allowabl e nias s emissio n rat e i n mg/h r

fo r eac htyp e o

f affecte dsourc e feat

i s controlle db y th e add-o n ai r

poUutio n contro l devic e usin g equatio n 4,5,6 , o r 7 a s : appropriate:. , ; •.;.

- .."J... H ''-•-. . '•.-•••••'-'.. ' VRi^ i xELhci X6 0 minutes/hou r = ;';.AMR*__,...*- > • (4) . ; ; ; ; , ' v ::•;. ' ,J- : / J ••.-'* . VR-X:2X'_LIK 2 x 6 0 minutes/hou r =

- • -;; : ^AMR^-y J{$)yJ^yy-yy-x •••*%;:• VRa dx ELd c x 6 0 miriutes/hou r

= . AMRdc . ' J-WJJJJ. 3.\J:\'J:-•%'': J.:yJ/.' VRc ax ELc ax 6 0 miriutes/hdii r

= AMR< _ J;. v (7);; ; ;;.::. : y , :.':,v\;;.;\-\; ; •;•;'••: • ; wher e A'hc' ' applie s t o fee tota l of . veritilafipi i rate s for

al l har dchromiu m ele^ppMm g tank s subjec t t o fee sarii e emissio n limitation , ''dc-'appUe s t o fee, ; ''.total ofyentilatio n rates fo r fee- -.*': : Jj*'•

- ; decorativ e chrqmiinhbiectrbplatiri g . tanks , "ca' ' appUe s t o fee tota l o f . ventilatio n rate s for

th e chromiu m anodizin g tanks , an dE

Li s fee applicabl e emissio n limitatio n from. § 63.34 2 i n mg/dscm . Ther e ar e tw o equation s fo

r har dchromium ' electroplatin g tank s beqaus e different emissio n limitation s ma y appl y (e.g. , a ne w tan k versu s a n existing , smal l tank) . (iv ) Establis hth e allowabl e mas s emissio n rate (AMR

) iri mg/h r

for th e syste musin g equatio n 8 , includin g eac h typ e ofaffecte dsourc e a s appropriate : AMRhc i + AMRhc

2 + AMRj c + AMR c = AMR,, , (8 ) . Th e allowabl e mas s emissio n rate calculate dfromequatio n 8 shoul db e equa l t o o r

les s tha n fee outle t

three-ru n averag e mas s emissio n rat e determine d fromMetho d30 6 testin g i n orde r fo r fee sourc e t o b e i n compUanc e wit hfee standards . *

. . (5 ) Eac howne r

o r operato r tha t use s . th e specia l complianc e provision s o f feis paragrap ht o demonstrat e complianc e wit hfee emissio n * limitation s o

f § 63.34 2 shal l submi t

fee measurement s an dcalculation s t o - suppor t thes e compUanc e method s wif e fee notificatio n of

complianc e statu s -*

* requiredb y § 63.347(e) . (6 ) Eac howne r

o r operato r tha t use' s th e specia l complianc e provision s o f feis sectio n t o demonstrat e complianc e wit hth e emissio n limitation s o f § 63.34 2 shal l repea t

thes e procedure s if atank i s adde do r

remove dfromfee contro l syste mregardles s of whethe r feat tan k i s anonaffecte dsource . I f th e ne w nonaffecte dtan k

replace s ar

i existin g nonaffecte dtan k of th e sam e siz e an di s connecte dt o th e contro l syste mthroug hth e sam e siz e inle t duc t the n thi s procedur e doe s no t hav e t o b e repeated. §63.34 5 Provision s fo

r new an d reconstructe dsources.; ; -'•'"-,. ' (a ) Thi s sectio n identifie s fee preconstructio n review requirements fo r ne w an dreconstructedaffecte dsource s tha t ar e subjec t

to , o r become.subjec t

to , thi s subpart. ' .'-.*.*•-.:' ; •oi;*--^;;.?".--'

r -.;.";• • '•"-•"••-' Q3) New or

reconstructed

affected

; ; sources . Theowne r

o r operato r o f anew " o r reconstructe daffecte dsourcei s subjec t t o § 63.5(a) , (b)(1) , (b)(5) , (b)(6) , . ; an d(f)(1) , a s wel l a s th e provision s of feis'paragraph.^'V*-^:*^^:^*-:^;-; 1 ;' ,*••'.; • .*'{(l j Alte r January'25;i995 ; whethe r o r no t a n approve dpermifprograr n i s ; . effectiv e iri''fee.'Statbm*.-^m<i'a_4'|-. ; .

. affectedipurciei s (or^-^*&&bej'lbcated ; .ri o personmaycoristrUctariewkffeqte d ; sourc e o r reconstruct

a n 'Effectedsourc e -..'•subject-t o thi s subpai-t , o r

reconstruct

a . i sourc e suc hfeat

I t become s an;affecte d. sourc e subject-.t

o feis subpto , without, ; submittin g anotificaticm;:p f coristnictio n o r

reconstructio n t o fee Administrator.;;. . Th e notificatio n sha

U contai n the . ".,-. . informatio n identifie di n paragraph s (b ) (2 ) ari d(3 ) o f

thi s section , as ; ,.-;, ; appropriate;. , ... . , , . . ....•'...,.-./....'.' : (2 ) Th e notificatio n o

f constructio n o r reconstructio n require dunde r . ',

- ,...; _ paragrap h(b)(1 ) ofthi s sectio n shaU . .include : ...... . ..••.•.•::..;•.• • (i ) Th e owne r

o r operator' s nairiei' . ' title , an daddress;.'.. . . "•..'.. " ....'...• . (ii ) Th e addres s (i.e., : physica l ' "/'.'
_ location ) o r

propose daddres s of;th e .. ' affecte dsourc e if

different fromfee ""J owner' s o r

operator's ; '.'"'. ' (iii ) A notificatio n o f

intentio n t o '- . construc t ane w affecte dsourc e o r mak e an y physica l o r

operationa l change s t o a n affecte dsourc e feat

ma y mee t

o r ha s bee n determine dt o mee t th e criteri afo

r areconstruction'a s define di n §63.2 ; ' (iv ) A n identification b

f subpar t N o f feis part a s fee basi s fo

r fee notification ;

. (y ) Th e expecte dcommencemen t an d- : completio n date s bf

fee constructio n pi

reconstruction ; (vi ) Th e anticipate ddat e o f (initial ) startu p of fee affecte dsource; ' • "JJ- 'i (vii ) Th e typ e of

proces s bperatibri t o b e performe d(har do r

decorative " ':'•" " chromiu melectroplating , o r chromiu m anodizing) ; ' (vifi ) A descriptio n ofth e ai r . !•- • ' * pollutio n contro l techniqu e t o be'u'se d• t o contro l emission s fromth e affecte d• source , suc ha s preliminar y desig n — drawing s ari ddesig n capacit y i f a n add

- ' o n ai r pollutioncontro l devic e i s used ; . * a n d • *. " • •••'••* • .-' • (ix ) A n estimat e o

f emission s from, th e sourc e basedo n engineerin g '.

- -.*••.,'. " calculation s an dvendo r

informatio n on . contro l devic e efficiency , expresse din

- - unit s consisten t

wit hfee emissio n Umit s o f thi s subpart . Calculation s of . emissio n estimate s shoul db e i n . • _•• - ••> sufficient detai l t o permi t

assessmen t

o f , fee validit y of

th e calculations . -. -:•

* .. • • • - : : (3 ) I f areconstructio n is . t o occur , th e notificatio n require dunde r paragraph ; -

. (b)(1 ) ofthi s sectio n sha

U includ e the,,.. . followin g i n additio n t o fee infonnatio n requiredi n paragrap h(b)(2 ) of this-j-.,; . section : JJ.'-. .-,__•; .'-.

- .. . ' ^\jJ'..Jj.'

y-.j- (i) A brie f descriptio n of

fee affected' . sourc e ari dfee.Comppnenfs.tqb'e,',';^,'.,* '_ replaced;' ..! 7 >v. : .,.-.'.'.5 ! .'..",".''^.^;,-' \\'.:.T.'. . '"• (ii ) A.briefdesaiption'bfthepreserit"* . an dpropose deiriissipri cpntrbl:;.', .-

_'•^j'j, ) technique , includin g th e infonriatipri >'/ ' requiredb y paragraphs"(b)(2) . (yiii ) ari d r ; (ix ) of thi s section ; 'J-.-..'.""-.*:.--"--'* ; ^iv,-) ^ • ' , :".• . (iii ) A n estimate , of

fee fixedcapital" , - cos t o f th e replacements ari dof . • • ' 1 : constructin g acomparable,entirel y new * • source;;.;,'.-*. •-.'•-._

_;yy '.'.-i. : '•;.-.•• • v;, . '. r-ij c •'

. (iv ) The > estiinate dlif

e o f th e affecte d•*

• Sourc e .altertiielreplacenierits ; arid '• • j \ V £}'._ (v) A discussio n pfan y ecpnonii c prj i • technicaiiimitatiqnsjth e $ourcemay.;rt-7
.Federa l Registe r/Vol . 60 , No . 1 6 / Wednesday , January 25 , .199 5 / Rule s an dRegulation s ' 497 3 hav e i n complyin g wif

e relevant standard s o r

othe r requirement s afte

r th e propose dreplacements. Th e discussio n shal l b e sufficientl y detaile d t o demonstrat e t o fee Administrator' s satisfactio n feat fee technica l o r economi c limitation s affect fee source' s abiUt y t o compl y wif

e fee relevant standar dan dho w the y d o so . (vi ) I f i n fee notificatio n o f reconstruction, fee owne r o r operato r designate s fee affecte dsourc e a s a recoristructedsourc e an ddeclare s tha t ther e ar e n o economi c o r technica l
_ Umitation s t o preven t

fee sourc e from complyin g wif

e al l relevant

staridard s o r requirements, fee owne r

o r operato r nee dno t submi t fee informatio n requiredi n paragraph s (b)(3 ) (iii ) throug h(v) o f

thi s section . (4 ) Th e owne r

o r operato r of ane w o r reconstructe daffecte dsourc e feat submit s anotificatio n i n accordanc e wif e paragraph s (b ) (1 ) throug h(3 ) of feis sectio n i s no t

subjec t t o approva l b y fee Administrator . Constructio n o r • reconstruction i s subjec t

onl y t o notificatio n an dca n begi n upo n . submissio n of

acomplet e notification . (5 ) Submittal

timeframes. After Januar y 25,1995 , whethe r o r riot a n approve dpermi t

programi s effectiv e i n fee Stat e i n whic ha n affecte dsourc e i s (or woul dbe ) located , a n owne r o r operato r of ane w o r reconstructed affecte dsourc e shal l submi t fee notificatio n o

f constructio n o r reconstruction require db y paragrap h (b)(1 ) o f thi s sectio n accordin g t o fee followin g schedule : • ' (i ) I f constructio n o r

reconstructio n commence s afte

r Januar y 25,1995 , fee notificatio n sha

U b e submitted , a s soo n a s practicabl e before fee constructio n o r reconstruction i s planne dt o commence . (ii ) I f fee constructio n o r reconstruction ha dcommence dan d initia l startu p ha dno t

occurre dbefore Januar y 25,1995 , th e notificatiori shal l ' b e submitte da s sobr

i a s practicabl e before startu p bu t

n o late r tha n 6 0 day s afte r January 25,1995 . ".. . '•_.' § 63.34 6 Recordkeepin g requirements . v (a)Th e owne r

o r operator..o f

each J.J:' .

. . affecte d.-source'subjectt o thes e . * - . • standard s shal l fulfil l al l recordkeeping - I requirerrients outline di n thi s section ; '•'"*• • ari dirithe i Geriet^lPrb vision s to4bCF R: -par t 63 , accordin g t o fee appUcabiUt y o f subpar t A of thi s parte s identifiedi n .•• ' ;Table l of

thi s subpart . • ';

- 7*H ; • !" " • ';. ; (b)Theowrieroroperatbi i of^ ; ' •".

- L affecte dsourc e subjec t

t o th e provision s o f feis subpar t

shal l iriairitai n the ; -followingrecord s for.suc hsource: , (1 ) irispectiori records fo

r th e add-o n ; ai r pollutio n contro l devicb , i f such"a•'•"•

- devic e i s used , an dmbnitoriri g i equipment , t o documen t tha t fee inspectio n an dmaintenanc e requiredb y fee work practic e standard s o f

: § 63.342(f ) an dTabl e 1 o f

§ 63.34 2 hav e take n place ; Th e recor dca n tak e fee for mo f achecklis t

an dshoul didentif

y fee devic e inspected , th e dat e o f inspection , abrie f

descriptio n of

fee workin g conditio n o f

fee devic e durin g fee inspection , an dan y action s take n t o correc t deficiencie s founddurin g fee. inspection . (2 ) Record s of

al l maintenanc e performe do n fee affecte dsource , fee add-o n ai r

pollutio n contro l device , an d monitorin g equipment ; (3 ) Record s o f

fee occurrence , duration , ari dcaus e (if

known ) of

eac h malfunctio n o

f process , add-o n ai r poUutio n control , an dmonitorin g * ' ' • equipment ; (4 ) Record s of

action s take n durin g period s o f

malfunctio n whe n suc h action s ar e inconsisten t

wit hfee operatio n an dmaintenanc e plan ; (5) i Othe r records, whic hma y take fee for mo f checklists , necessar y t o demonstrat e consistenc y wif e fee provision s of

fee operatio n ari d maintenanc e pla n require db y § 63.342(f)(3) ; (6) Tes t reports documentin g result s o f al l performanc e tests ; (7 ) Al l measurement s a s ma y be . necessary't o determin e fee condition s o f performanc e tests , includin g measurement s necessar y t o determin e : complianc e wit hfee specia l complianc e procedure s of

§ 63.344(e) ; ' (8 ) Record s o

f monitorin g dat a requiredb y §63.343(c ) feat ar e use dt o dernonstrat e compUanc e wit hfee standar dincludin g fee dat e ari dtime th e dat aar e collected ; ' (9 ) Th e specifi c identificatio n (i.e. , th e dat e an dtime o

f commericemen t

an d completion ) o f

eac hperiqdo f

exces s "emissions , a s indicate db y monitorin g data , tha t occur s durin g rrialfunctio n of th e process , add-o n ai r

pollutio n control , "o r monitorin g equipment ; (10 ) Th e specifi c identificatio n (i.e. , fee dat e an dtime o f

commericemen t an dCompletion ) o f

eac hperio do f exces s emissioris , a s indicate dby , monitorin g data , feat

occur s durin g period s othe r

tha n malfurictibn o f

fee/-..'.-. \ procbss , add-o n ai r

pollutio n control ; pr; . •mbnitbriftgiebuipriierit ;j ! '_\ * *.i " j'y[ y-j-yjJ \. (11 ) Th e totalprocess operatingtim e ; ; ofth e affecte dsourc e durin g the:" ; reportmjfperiod; ; '-^fy;

J'..'" : '_ : \ - : ''jy v ;J: J : •-.._(12 ) Record s b f

fee artu^lcuimulative; • rectifier capacit y o f

hardidri-briiiu m; : * elect f opiatin g tank s a t

afadlit y ' •"

; jj expende ddu^n g eac h-mont hofthe.,.'." ' -• • reporting period , an dth e tota l capacit y JJ expende dfo.date'fp r

areportin g period ,

. if fee owne r

o r operato r i s usin g fee :•'•;"'.'•

_ actua l cumulativ e rectifie r capacit y t o determin e facilit

y siz e i n accordanc e wif e § 63.342(c)(2) ; ; (13 ) Fo r source s usin g fum

e suppressant s t o compl y wif e th e standards , record s ofth e dat e an dtim e tha t fume suppressant s ar e adde dt o th e electroplatin g o r

anodizin g bath ; (14 ) Fo r source s complyin g wit h § 63.342(e) , records ofth e bath component s purchased , wif e th e wettin g agen t

clearl y identifie da s abath constituen t

containe di n orie.o f

fee components ;

. " (15 ) An y informatio n demonstratin g whethe r asourc e i s meetin g fee requirements fo

r awaive r o f •• • recordkeepingbr reporting requirements , i f

fee sourc e ha s bee n grante dawaive r

unde r § 63.10(f) ; an d (16 ) Al l documentatio n supportin g th e notification s an dreports requiredb y § 63.9 , § 63.10 , an d§ 63.347 . (c ) Al l record s shal l b e maintaine dfo r aperio dof

5 year s i n accordanc e wit h § 63.10(b)(1) , § 63.34 7 Reportin g requirements . (a ) Th e owne r

or operato r o f eac h affecte dsourc e subjec t

t o thes e standard s shal l fulfill al l reporting , requirement s outline di n feis sectio n an di n th e Genera l Provision s t o 4 0 CF R par t 63 , accordin g t o th e applicabilit y o f subpar t A a s identifie di n Tabl e 1 ofthi s subpart . Thes e report s shal l b e mad e t o fee Administrato r

at fee appropriat e addres s a s identifie di n § 63.1 3 o r t o th e delegate dStat e authority . (1 ) Report s required.by subpar t A of thi s par t an dfeis sectio n ma y b e sen t b y U.S . mail , fax , o r

b y anothe r

courier . (i ) Submittal s sen t

b y U.S . mai l shal l b e postmarke do n or

before th e specifie d date . ••'••• • (ii ) Submittal s sen t

b y othe r method s shal l b e receive db y fee Administrato r • o n o r before th e specifie ddate . (2 ) I f acceptabl e t o bothfee Administrato r

an dth e owne r

o r . , . operato r o f a n affectedsource , reports ' may b e submitte do n electroni c media . (b ) Th e reporting requirements o f thi s \ sectio n appl y t o th e owne r o r operato r o f a n affecte dsourc e whe n suc hsourc e become s subjec t

t o th e provision s o f

thi s subpart . :3.•'"..',-,;:•'•.: : -- : ::.-'h-ui.i-.:.-.-- • •• • lie) Initial

notifications. (l),Th e b\ync r o r operato r o f a n affetfe dsourc e tha t

ha s . ar i initial.startii p befor

e jairiutay.'^S l • - : % j'.• 1995 , shallribtif

y fee Administrato r

i n ' writin g feat

the.^sourc e is . subjec t

.to this.! ' subpart . Th e hotificatib n shal l b e -, ; , submitted n o late r

tha n 18 0 calenda r day s afte r January 25,1995 , ani l shall,..; , contai n th e followin g inforinatipn : ;i , . ; (i ) Th e name , title, an daddres s o f th e owner ; o r operator ; . . .'*' ..•: :
. C

lJj\3^J^"..\\. .'• (ii ) Th e addres s (i.e. , physical ; ,: ' . location ) of

eac haffectedsource ; "•'•" 'P.2 9

497 4 ; Feder-1 : R^i^ijJ / Vol- ; 60,:;N ^



### ti. 

# I (iii ) A statemen t feat subpar t No f this . par t i s fee basi s fo r

feis notification ; (iv ) Identificatio no f

th e applicabl e emissio nlimitatio nan dcomplianc e . - dat e fo r eac haffecte dsource ; (v ) A brie f descriptio no f

eac haffepte d source , includin g th e typ e o f proces s operatio nperformed ; •_• (vij Fo r source s performin g har d chromiu melectroplating , fee maximu m potentia l cumulativ e potentia l rectifier capacity ; (vii ) Fo r source s performin g har d chromiu melectroplating , astatemen t o f whethe r fee affecte dsource(s ) i s locate d' a t asmal l o r

alarge , har dchromiu m electroplatin g facilit y an dwhethe r feis wil l b e demonstrate dferoughactua l o r , maximu mpotentia l cumulativ e rectifie r capacity ; (viii ) Fo r source s performin g har d chromiu melectroplatin g tanks , a stateinento f

whethe r fee owne r

o r operato r o f a naffecte dsource(s ) wil l limi t th e maxiniu mpotentia l cumulativ e rectifie r

capacit y i n accordanc e wit h§ 63.342(c)(2 ) suc hfeat fee har dchromiu melectroplatin g facilit y i s considere dsmall ; an d (ix ) A statemen t

o f whethe r th e affecte dsourc e i s locate da t amajo r sourc e o r a n are asourc e a s define di n §63.2 . -•"•'.'_• . (2 ) Th e owne r

o r operato r o f ariew o r ' reconstructe daffecte dsourc e feat ha s - N a ninitia l startu p afte r

Januar y 25,199 5 shal l submi t

a n initia l notificatio n(i n additio nt o th e notification.of . constructio no r

reconstructio nrequire d• b y § 63.345(b ) a s follows : (i ) A notificatio nofth e dat e whe n constructio no r

reconstructionwa s commenced , shal l b e submitte d simultaneousl y wif e th e notificatio no f constructio no r

reconstruction , i f constructio no r

reconstructionwa s * commence dbefor e Januar y 25,1995 ; (ii ) A notificatio no f

fee dat e whe n; constructio no r

reconstructionwa s '•-.

'•:;-.•_' _ commenced , shal l b e submitte dn o late r tha n.3 0 calenda r

day s afte r

suc hdate , i f constructio no r

reconstructionwa s '--*.:

'*.-r ' - . commence dafte r

Januar y 25,1995 ; ari d; (iii ) A>notificatio no f

th e actua l dat e -.::: o f startu p o f

fee sourc e shal l b e ; " ;,:* subriiitte dwithi n3 0 calenda r day s afte r suc hdate.

- yjsJJ:J5jyy' f ' ! jj : J3 : yJjJ'yJ

: '' l J (d ) Notificationjof

performance iej&jjj (ljTh e pwriero r

operato r o f anafferted" ; .sourc e shal l ribtif^ feeiAdriiini^tratbr in 1 ' , writirigo f hi s qrherintentio n to;; : JJ'y jjj conduc t aperfbrinaricetes t

at ieast60;; % calendar ; day s befor e the ' tes t i s j;; ' ?;'"•'; ' scheduled-t o begin-to 'jgQdYrfoe'JjtyyljyJjjjJ , Admiriistratb r

t o haviaar i observe r

jjj'y-y. presen t durin g th e testi'Oliservatiori.bf.';•"' • fee performance

- tes t

byfee ^ J

- ^ > .' '"• "

. Adrninistrato r

i s optional. . ''*"''• ' " (2 ) I nth e even t fee owne r

o r operator• ' i s unabl e t o conduc t

fee performanc e tes t a s scheduled , fee provision s o f : §63.7(b)(2)appi y .;: v :,;;;;: : (e) Notification(of

compliance status. (1 ) A notificatio n of

compUanc e statu s i s require deac htim e feat a n affecte d sourc e become s subjec t

t o fee .'.. ' requirement s of

thi s subpart . I (2 ) Befor e atitl e V permi t

ha s bee n issue dt o fee owne r

o r operato r o f a n affecte dsource , eac htime anotificatio n o f compUanc e statu s i s require dunde r thi s part , fee owne r

o r operato r o f a n affecte dsourc e shal l submi t t o fee Administrato r

anotificatio n o f

' , ; . complianc e status , sighe db y the!. . responsibl e officia

l (a s define di n § 63.2 ) wh o shal l certif

y it s accuracy, , attestin g t o whethe r

fee affecte dsourc e ha s . complie dwit hthi s subpart . Afte r atitl e V permi t ha s bee n issue dt o th e owne r o r operato r o f a n affecte dsource , fee notificatio n o f

compUanc e statu s shal l b e submitte dt o fee appropriat e - permittin g authority . Th e notificatio n shal l lis t fo r eac haffecte dsource : (i ) Th e appUcabl e emissio n limitatio n an dfee method s feat

wer e use dt o determin e complianc e wif e thi s limitation ; (ii ) I f aperformanc e tes t

i s require db y feis subpar t

• fee tes t repor t ;-: : documentin g th e results"'of.th e •;",'*' " performanc e test,,which.contain s fee element s requiredb y § 63.344(a) , includin g measurement s an d.', calculation s t o suppor t

fee specia l compUanc e provision s o f § 63.344(e ) i f thes e ar e bein g foUowed ; ..••.''•..'.. . (iii ) Th e typ e an dquantit y o f ','-.'' ' hazardous.ai r

pollutant s eiriitted^b y fee sourc e ..reporte di n mg/dsc mo r mg/hr . if fee sourc e i s usin g th e special . provision s o f

§ 63.344(e ) t o compl y wif e fee standards . (I

f fee owne r

o r operato r i s subjec t to .fe e constructio n an d .reconstructio n provisions'o f § 63.34 5 an dha dpreviousl y submitted'emissio n . estimates , fee ownerbrpperato r sha U stat e feat tins report

correct s o r

verifie s th apreviou s estimate. ) Fo r source s riot requiredf b conduct- aperformanc e tes t i n accordanc e wif

e §63,343(b) , fee surfac e tensio n measuremen t may fulfill thi s requirerrierit;;. JjJJy-3i 1 yJJy3 . .v*'-v:','.,.* '

- . (iy ) Fo r eachmorutoredparariiete r fpr ; whic hacompliantValue.istohe "':' . JyJ.Jj establishe dunde r

§ 63343(c) , fee, J'; V : specifi c operating. pararfletiM^yalue,';or' •<-.' • .rang e of-'values' ; "tha

t .qor^Jipii!_s;.tOy; : v ^ cx>mpl^c e ^titthe.appUo M : : eriiissiari'lii^;'^. : '5;'?:i; ^ • (v ) Thejriiefebds'fea i wilthi?.'lisedlp : j ' '._ determme:cbritiriupu^CQmpl^ce^, ^ , • indud^g'a*descriptionpf;moi u an dreporting requirements, i f mefebd s differ/frorr i thos e identifie dm'this ; ;;:. ^ subpart;'''"

- :i.-:_--- :

- *••- • ,-.*••

- -••.:'• • (vi ) A descriptio no f fee ai r pollutio n contro l techniqu e fo r

eac hemissio n. , point ; • ':.;••*- . •;. - •;.'. , .•: . .. . .. • ; i (vii ) A statemen t

feat fee owne r

o r operato r ha s complete dan dha s o n file . th e operatio nan dmaintenanc e pla na s requiredb y fee wor k

practic e standard s • i n' § 63.342(f);".,;..' • (viii ) I f fee owne r

o r operato r i s determinin g faciUt y siz e base do n actua l cumulativ e rectifier

capacit y i n accordanc e wif e § 63.342(c)(2) , records, • t o suppor t

thatth e facilit y i s smaU . Fo r existin g sources , records froman y 12- " mont hperio dprecedin g fee compUance . dat e shal l b e use do r

adescriptio no f

, h o w operation s wil l chang e t o mee t a smal l designatio nshal l b e provided . Fo r ne w sources , records o f

projecte d. rectifier capacit y fo r

th e first 12-mont h. perio do f tan k operatio nshal l b e used ; (ix ) A statemen t

h y fee owne r

o r operato r ofth e affecte dsourc e a s t o whethe r fee sourc e ha s complie dwit h fee provision s o f

feis_ubpart. (3 ) Fo r source s requiredt o conduc t a performanc e tes t

b y § 63.343(b) , th e notificatio no f

complianc e statu s shall . • b e submitte dt o fee Administrato r n o . late r tha n9 0 calenda r

day s following . completio no f

fee complianc e • demonstratio nrequire db y § 63. 7 an d § 63.343(b) . .. . ' (4 ) Fo r source s feat

ar e no t require d t o complet e aperformanc e test i n accordanc e wife' § 63.343(b) , fee

. notificatio no f

complianc e statu s shal l b e submitte dt o th e Administrato r n o . late r tha n3 0 day s after , fee cornplianc e dat e specifie di n § 63;343(a) . . (f ) Reports of

performance test

results. (1 ) Befor e atitl e V permi t

ha s bee n• issue dt o fee owne r

o r operato r o f a n affecte dsource , fee owne r o r operato r shal l report

t o fee Administrato r

fee results o f an y performanc e tes t

. conducte da s requiredb y § 63. 7 or . § 63.343(b) . Afte r

atitle Vpermithas'. ' '_. bee nissue dt o fee owne r

o r operatorp f a naffecte dsource , fee owne r or:,.;_'," ' V'"

' , operato r shoul drepor t

performanc e test . results t o th e appropriat e perrnitting.-. ' . . authority:..:•.;; • 'r, : - ; >>; - : .*:

j ••? -... -..: - -;:;v.s ; "**,,: , .

- (2 ) Report s ofperfbrriianc e tes t results•'••-. shal l h e submitte drio late r tha n9 0 days- ; followin g fee completio nofth e - , A

- - v r > . performanc e test , ari dshal l b e submitte d. ' a s par i p f th e notificatio no f

compUance^ . statu s re^uh-e db y .paragrap h(e ) o f this,'...- : ; secii6aJ.y:*J.J_j._j. j-'^•^.yyj'lyi: jJ.^J

. (g ) Ongoing"complianceJstqtustneppris':.. fqrmajor. sources. uJ.Th e owne r .o r : --.v* ' , operato r o f an^ affected.sourc e tha t

is, , -,-; ; locate da t amajb r sourc e sit e shall! . •.; . :i \. , submi t asummary/repor t

t p fee'.",'.\.;.-"v^<;'- ">

' Administratp r

t o documen t

th e ongoin g '. '

. complianc e katuisbf.fee . affected.-.soi_^ ; j'.. ; Th e report

shal l gontair i fee irifprrriatipn . identifie di n paragrap h(g)(3 ) ofthi s 'Federa l Registe r / Vol . 60 , No . 1 6 /

Wednesday , Januar y .25 , 1995.7-Rule s an dRegulations-.497 5 section , an dshal l b e submitte d
, semiannuall y excep t

when : (i ) Th e Administrato r

determine s o n a case-by-cas e basi s feat

mor e frequent reporting i s necessar y t o accuratel y asses s fee complianc e statu s ofth e source ; o r (ii ) Th e monitorin g dat acollecte db y fee owne r

o r operato r ofth e affecte d sourc e i n accordanc e wif e § 63.343(c ) sho w feat fee emissio n limi t ha s bee n exceeded , i n whic hcas e quarterl y .* • reports shal l be , submitted . Onc e a n owne r o r operato r o f a n affecte dsourc e reports a n exceedance , ongoin g compliluic e statu s reports shal l b e

- submitte dquarterl y unti l arequest t o

. reduc e reporting frequency unde r ; paragrap h(g)(2) ofthi s sectio n i s approved . (2 ) Request

to reduce frequency of ongoing compliance status reports, (i ) . A n owne r o r operato r wh o i s required t o submi t ongoin g complianc e statu s report s o n aquarterl y (o r mor e frequent basis ) ma y reduce fee frequenc y of reportin g t o semiannua l i f al l ofth e followin g condition s ar e met : (A ) For 1 ful l year

(e.g. , 4 quarterl y o r 1 2 monthl y reporting periods) , th e ongoin g complianc e statu s report s demonstrat e tha t

th e affecte dsourc e i s i n complianc e wit hth e relevant emissio n limit ; (B ) Th e owne r

o r operato r continue s t o compl y wif

e al l appUcabl e recordkeepin g an dmonitorin g requirements o f

subpar t A ofthi s par t an dthi s subpart ; an d (C) Th e Adrninistrato r

doe s no t objec t t o areduced reporting frequenc y fo r fee affecte dsource , a s provide dir i paragraph s (g)(2) (ii ) an d(iii ) ofthi s section . (ii ) Th e frequency o f

submittin g ongoin g compUanc e statu s reports may b e reducedonl y after

fee owne r

o r operato r notifie s fee Administrato r i n writin g o f hi s o r he r intentio n t o mak e suc hachange , an dfee Administrato r doe s no t objec t t o fee intende dchange . I n decidin g whethe r

t o approv e a • - reducedreportin g frequency, th e Administrato r

ma y review infonnatio n concernin g fee source' s entir e previou s performanc e histor y durin g fee 5 r-yea r Arecordkeeping perio dprio r to fee intendedchange , o r

fee recordkeeping perio dsinc e fee source' s compUanc e , date,-whicheve r

i s shorter . Record s . . subjerttoreviewnria y includ e V -

. ; : perfonriaric e tes t

results , monitorin g - i data , en devaluation s of'a n owne r o r <Jy : ; operator' s conformanc e wit hemissio n N.-Unutatiori' s an dwork

practic e standards . Suc hinformatio n ma y b e use db y fee Admiriistrato r

to mak e ajudgmen t

abou t fee source' s potentia l for noncomplianc e i n fee future . I f fee Administrato r disapprove s th e owne r

o r operator' s request

t o reduce reporting.* frequency, fee Administrato r wiU notif

y fee owne r o r operato r i n writin g withi n .'

• 4 5 day s after

receivin g notic e ofth e owne r o r operator' s intention . Th e notificatio n from fee Administrato r t o th e owne r o r operato r wil l specif

y fee ground s o n whic hfee disapprova l i s based

- I n fee absenc e o f

anotic e o f disapprova l withi n 4 5 days , approva l i s automaticall y granted . (iii ) A s soo n a s fee monitorin g dat a require db y § 63.343(c ) sho w tha t fee
_ sourc e i s no t

i n compUanc e wit hfee relevant emissio n Umit , th e frequency of reporting sha

U revert t o quarterly , an d th e owne r

shal l stat e thi s exceedanc e i n fee ongoin g complianc e statu s report fo r th e nex t reportin g period . After demonstratin g ongoin g complianc e wif e fee relevant

emissio n Umi t

for anothe r ful l year , fee owrie r

o r operato r ma y agai n request

approva l fromth e Administrato r

t o reduce fee reporting frequency a s allowe db y paragrap h(g)(2) of thi s section . (3 ) Contents of

ongoing compliance • status reports. Th e .owne r o r operato r o f a n affecte dsourc e fo

r whic hcompUanc e monitorin g i s requiredi n accordanc e wit h§ 63.343(c ) shal l prepar e a summary report

t o documen t

fee ongoin g complianc e statu s ofth e source . Th e report

mus t contai n fee followin g iriformation : (i ) Th e compan y nam e an daddres s of fee affecte dsource ; (ii ) A n identificatio n ofth e operatin g paramete r feat i s monitore dfor compUanc e determination , a s require d b y § 63.343(c) ; •". • ' (iii ) Th e relevant

emissio n limitatio n for fee affecte dsource , an dfee operatin g paramete r

value i o r rang e o f

r values , tha t

correspon dt o compUanc e wif e thi s emissio n limitatio n a s specifie di n fee notificatio n o f compUanc e statu s requiredb y paragrap h(e ) o f

thi s section ; ; : (iv ) Tri e beginnin g an dendin g date s ofth e reporting period; , - : ' ; v{v ) A descriptio n ofth e typ e o f " ; proces s performe di n fee affecte d source ; .-•.-.•- y-;_- (vi) Th e tota l operatin g tim e o f th e affecte dsourc e durin g th e reporting r : period; ' .,-"'1"-'

- .:•?•.•..-..•. yJyyy J J-y_J; j- (vii ) I f fee affecte dsourc e i s ahar d chromiu melectroplatin g tankOan dth e owne r oroperato r

i s limitingthe'TT y JJJ. niaximuri i cumulative^^rebtifiO T capacity ; iri accordanc e wif

e § 63.342(e](2);fe e J3 • actua l cumulativ e rectifier-capacit y \ ••''J expende ddinin g fee repottingpOTod;^;. ; bri amonth-hy-month-basis;: 'Jj^y.J . H- : •-; • (viii ) A summar y of

operating '•_'/.Jv- . 3"; paramete r values , includin g fee tota l duratio n of

exces s emission s durin g fee reportin g perio da s indicate db y thos e values , fee tota l duratio n ofexces s ' < \ . emission s expresse da s apercen t o f fee tota l sourc e operatin g time duriii g feat reporting period , an da.breakdow n o f fee tota l duratio n of

exces s emission s durin g fee reporting perio dint o thos e tha t are du e t o proces s upsets , contro l equipmen t

malfunctions , othe r

know n causes , an dunknow n causes ; (ix ) A certificatio n b y aresponsible 3 official , a s define di n § 63.2 , feat fee : wor k practic e standard s i n § 63.342(f ) wer e foUowedi n accordanc e wif e th e operatio n an dmaintenanc e pla n fo r fee source ; (x ) If fee operatio n an dmaintenanc e pla n requiredb y § 63.342(f)(3 ) wa s no t • followed , a n explanatio n ofth e reason s fo r no t foUowing th e provisions , a n assessmen t

of whethe r an y exces s emissio n arid/o r

paramete r

monitorin g exceedance s ar e beUeve dt o hav e occurred , an dacop y of

th e report(s ) require db y § 63.342(f)(3)(iv ) . , documentin g tha t

th e operatio n an d maintenanc e pla n wa s no t followed;- , (xi ) A descriptio n o f

an y change s i n monitoring , processes , o r conbrol s sinc e fee las t reportin g period ; (xii ) Th e name,.title , an dsignatur e o f th e responsibl e officia

l who'i s certifyin g th e accurac y o f

fee report; an d (xiii ) Th e dat e ofth e report., - (4 ) Whe n mor e tha n on e monitorin g devic e i s used.t o compl y wif e fee . continuou s compUanc e monitorin g • - requiredb y § 63.343(c) , th e owne r o r operato r sha U report fee result s a s ,; ' - requiredfo

r eac hmonitorin g device . . ,. ' . However , whe n on e monitorin g devic e i s use da s abacku p fo

r fee primar y monitorin g device , fee owne r o r . operato r shal l onl y report

th e result s fromfee monitorin g devic e use dt o mee t th e monitorin g requirements o f this. , subpart . I f bot hdevice s ar e use dt o mee t thes e requirements, the n fee owne f o r operato r sha U repor t fee result s from ' - eac hmonitorin g devic e fo r fee felevanf

compUanc e period . (h.) Ongoing compliance status reports for area sources.JThe requirement s of- ;-. ' -' • thi s paragrap hd o no t

alleviat e affected , . ;*-*• . are asource s fromcomplying wit hth e ;. . requirements o f

Stat e o r Federal . -,

/•••* . •'__' '- i .•' } operatingpennitprogranisunder4 0 ".. . .CFRfart7i.u3j-.-./y-...y\3 ."4..".-.V.'•-.;• ' ' (1 ) Th e owne r

o r operato r o f a n ..:*^ •' . • " : affecte dsourc e tha t

i s locate datar i area ' • • : ? sourc e sit e shal l prepareia

Js\mrn^•JJ~JlJ'•^j•-••;^

^-•• .repor t t o documen t

fee ongoing

jy-^ y ft?}; complianc e statu s o f

th e affecte dsource ; ; . •'. Th e report

shallcontair i fee^irifonriatibn.; k;;li~ ~ identifie din : paragraph^'(g)(3);'of thi s y >-J ? j.- ; -; | * "J-". .section ; shailh e cbmpleted.arihuali y ' • i l •':..." an dretainedonsite , an dmad e availablp V •:.'•' ;

- t o fee Admiriistrato r

upo n request: The^ . /,''" : " • repor t shal l b e complete dannuall y •. > :P.3 1

k'V':*.--- ^

•£:

-



### { * j . excep t

a s provide di n paragrap h (h)(2 ) • ofthi s section , -y-- --J-*.--J -*y ; y' " '' ' "•'•'•''

• (2) Reports of

exceedances. (i ) I

f both ofth e followin g condition s are.met',

- ~ - ' ?

. sehiiannua l report s shal l b e prepare d an dsubmitte dt o fee Administrator : (A ) Th e tota l duratio n o f

exces s emission s (a s indicate db y fee : riionitoring dat acollecte db y fee owne r o r operato r o f fee affecte dsourc e i n * • accordanc e wif

e § 63.343(c) ) i s 1 percen t of greate r of th e tota l operating ' : tim e fo r fee reporting period ; an d (B ) Th e tota l duratio n o f malfunction s of fee add-o n ai r

pollutio n contro l y devic e an dmonitorin g equipmen t i s 5 percen t o r greate r b f th e tota l operatin g -time.'."!* - - .-.-....;• : ;.,::-.-;•::.-'. - •;.-.-;•=••-.•••.>*..... v .-.._ . (ii ) Onc e a n bwrie r

o r operato r of a n affecte dsourc e report s a n exceedanc e a s define di n paragrap h(h)(2)(i ) ofthi s section , ongoin g coiripUanc e status" ;

- reports shal l be . submitte dsemiannuall y unti l areques t

t o reduc e reportin g frequency uiiderparagrap h (h)(3)offei s sectio n i s approve d• '>

' (iii ) Th e Administrato r

may determin e o n acase-by-cas e basi s tha t fee summar y repor t

shal l b e complete d mor e frequently an dsubhiitted , o r tha t " fee annua l report

shall.b e submitte d instea dof

bein g retaine do n site , if thes e • measure s ar e necessar y t o accuratel y -asses s fee complianc e statu s o f th e , source . • • ••

• "" • -:.'*•'.:'••* ' '••- . (3 ) Request

to reduce frequency of ongoing compliance status reports.-(i) A n ownero r

operato r wh o i s require d t o submi t ongoin g complianc e statu s * report s o n asemiannua l (or mor e frequent) basis , o r

i s require df

b subriii t it s annua l report

instea db f

retainin g i t O n site , may reduce fee frequency of reporting t o annua l and/o r b e allowe dto . maintai n fee annua l report onsit e if al l o f fee following condition s ar e met : . ' (A ) Fo r 1 ful l year

(e^g, , 2 semiannua l o r 4.quarterl y •reportin g periods) , fee \ ongoin g compliaric e statu s report s demonstrat e tha t

fee affecte dsourc e i s * i n complianc e wif

e fee relevan t emissionJimit , (B ) Th e owne r

o r operato r continue s t o compl y wife al l applicabl e recordkeepin g an dmonitorin g : 'requirement s o f subpar t A of-thi s part

' an dthi s subpart ; an dy*- ^ :' • (C) Th e Administrato r doe s no t object t o areduced reporting frequency fo r fee affectedsource , a s provide di n paragraph s (h)(3 ) (ii ) an d(iii ) of feis section . - •*

• •;- (ii ) Th e frequency o

f submittin g ongoin g compUanc e statu s report s ma y b e reducedonl y after

th e owne r

o r operato r notifie s fee Administrato r i n writin g of

hi s o r he r intentio n t o mak e suc hachange , an dfee Administrato r doe s riot objec t t o fee intende dchange . I n decidin g whethe r

t o approv e a reducedreporting frequency, th e Administrato r

may revie w infonnatio n concernin g th e source' s previou s performanc e histor y durin g th e 5-yea r recordkeepin g perio dprio r t o th e intende dchange , o r

fee recordkeepin g perio dsinc e th e source' s compUanc e date , whicheve r

i s shorter . Record s subjec t t o revie w may includ e performanc e tes t

results , monitorin g data , an devaluation s of

a n owne r

o r operator' s conformanc e wit hemissio n limitation s an dwor

k practic e standards . Suc hinformatio n ma y b e use db y fee Administrato r

t o make ajudgemen t abou t fee source' s potentia l fo r noncompUanc e i n th e future . I f th e Administrato r

disapprove s th e owne r

or operator' s request

t o reduce reportin g frequency, fee Administrato r wil l notif

y th e owne r

o r operato r i n writin g withi n 4 5 day s afte

r receivin g notic e ofth e . owne r o r operator' s intention . Th e notificatio n fromth e Administrato r t o th e owne r

o r operato r wil l specif

y th e ground s o n whic hfee disapprova l is . based . I n th e absenc e o

f anotic e of disapprova l withi n 4 5 days , approva l i s automaticall y granted . .
, (iii ) A s soo n a s fee monitorin g dat a requiredb y § 63.343(c ) sho w tha t th e . sourc e i s no t

i n complianc e wif

e fee . relevan t emissionJimit , fee frequency o f reportin g shal l revert

t o semiannual,.- , an dfeeowner

shal l stat e thi s '.-**

• exceedanc e i n fee ongoin g complianc e statu s repor t

fo r fee nex t reporting perio dAfte

r demonstratin g ongom g complianc e wit h fee relevant emissio n limi t fo r anothe r full year , fee owne r

or operato r

may agai n request

approva l fromfee Administrato r

t o reduc e th e reporting frequency a s allowe db y paragrap h(h)(3 ) of

thi s section . : (i ) Reports associated

with trivalent chromium baths. Th e requirement s of . feis paragrap hd o no t

alleviat e affecte d source s fromcomplyin g wif e fee requirement s of

Stat e o r Federa l operatin g permi t

program s unde r

titl e V . Owner s o r

operator s complyin g wif e fee provision s of

§ 63.342(e ) ar e no t

subjec t t o paragraph s (a

) throug h(h ) o f

feis section , bu t

mus t instea dsubmi t

fee followin g reports: ' • (1 ) Witin n 18 0 day s after Januar y 25 , 1995 , submi t

a n initia l notificatio n tha t includes : (i ) Th e sam e informatio n a s i s require db y paragraph s (c)(1 ) (i ) through , (v) o f thi s section ; an d (ii ) A statemen t

feat atrivalen t chromiu mproces s tha t

incorporate s a wettin g agen t

wil l b e use dt o compl y wif e § 63.342(e) ; an dr (iii ) Th e lis t

o f bathcomponent s that compris e fee trivalen t

chromiu mbath , wif e th e wettin g agen t

clearl y . • '. " identified ; an d-

, (2) Withi n 3 0 day s o

f th e complianc e dat e specifie di n § 63.343(a) , a notificatio n o

f complianc e statu s tha t contain s a n updat e o f

th e informatio n submitte di n accordanc e wif e paragrap h (i)(l ) of thi s sectio n o r

astatemen t

tha t th e informatio n i s stil l accurate ; an d (3 ) Withi n 3 0 day s of

achang e t o tli e trivaleri t chromiun i electroplatin g process , areport

tha t includes : • . " (i ) A descriptio n of

th e irianne r

i n whic hfee proces s ha s bee n change d an dth e emissio n limitation , if any i no w applicabl e t o th e affecte dsource ; (ii ) I f adifferent

emissio n limitation , applies , th e applicabl e informatio n ' • require db y paragrap h(c)(1 ) ofthi s section;an d• . y (iii ) Th e notificatio n ari d reportin g requirement s o

f paragraph s (d) , (e) , (f) , (g) , an d(h) o

f thi s section , whic hshal l b e submitte dlrfaccordanc e wit h th e schedule s identifie di n thos e paragraph s TABL E 1 T O SUBPART N O F PART 63—GENERA L PROVISION S APPLICABILIT Y T O SUBPAR

T N Genera l provision s

. referenc e 631(a)(1 )
_ . . , „ 631(a)(2 ) 631(a)(3 ) 631(a)(4 ) 631(a)(6 ) 631(a)(7 ) 631(a)(8 ) Applie s t o subpart N Ye s . Ye s Ye s Yes
. Ye s Ye s Ye s Commen t " ,

Additiona l term s define d i n §6 3 341 , whe n overla p betwee n subpart s Aan d N occurs , subpart N take s precedenc e Subpart N clarifie s th e applicabilit yo f eac h paragrap h i n subpar t At o source s subjec t t o subpart Nj ,'-Erf^.al'-ji^-rter--/-ypi ^ TABL E t-T O SUBPART N O F PAR T 63.-^GENERA L PROVISION S 

### -AppL4CABiuTYt660BPARTN-riContinued Genera l provisions . referenc e 63.T(a)(10). . 63.1(a)(11 ) ;__.. „ 63.1(a)(12H14 ) 63.1(b)(1 ) 63.1(b)(2 ) '-_. —

. 63.1(b)(3 )
_ 63.1(c)(1 ) 63.1(c)(2 ) 63.1(c)(4 ) 63.1(c)(5 ) 63.1(e ) ,;„ ; 63^ 2 63. 3 ... . 63. 4 ... . 63.5(a ) 63.5(b)(1) . 63.5(b)(3) , 63.5(b)(4) , 63.5(b)(5).... : .... . 63.5(b)(6 ) •..„.,.:..' . 63.5(d)(1)(i )
____ _ 63.5(d)(1)(ii) „... . ..... . 63.5<d)(1)(iii

) ............ . 63.5(d)(2)....... . 63.5(d)(3M4 ) ~ » » . 63.5(e)-....:...-...:..:. : 63.5(0(1 ) ..-'.. - 63.5(f)(2 ) ;_•;.. „ 63.6(a ) -.:.:.-.. 63.6(b)(1)-(2 ) ... . 63.6<b)(3M4 ) ..-.. 63.6(b)(5).... ; 63.6(b)(7)..._..,. . 63.6(c)(1H2 ) J63.6(c)(5 ) .. . . 53.6(e ) . . . _

• €3.6(0(1 ) 63.6(f)(2)0H" ) • 63.6(f)(2)(ui) .._. . 63.6(f)(2)dv

) . . 63.6«)(2)(v ) 63;6(0(3 ) •i 63.6(g ) y 63.6(h ) 63.6(0(1 )
_ ,:: : 63.6(0(2 ) ^;.63,6(0(3 ) 3, 63.6(0(4)0)^..... 63.6(i)(4)(i. ) : 63.60X5 ) 63.6(0(6)0). - -63.6(i)(6)(n)-.. . 63,6(0(7 ) Applies t o •subpar t N Ye s Ye s ._.„TM. „ Ye s N o ^_.„_TM „ Ye s ;'-.'. • No „__.__,_. ; Yes „ '_ yes ...._....-. . Yes " No :..,.......:_. . Ye s yes ...,.: . Ye s Ye s Ye s Ye s Ye s No. . Yes.: - Ye s No . Ye s Ye s „.. .

- <^ ' Ye s .:._ Ye s Ye s Ye s N o - Ye s Yes. . Ye s Ye s No
_ Ye s No. . No. . No. . Ye s N o - Ye s Ye s Ye s Ye s No. . Ye s Ye s Ye s No „ Ye s Ye s Ye s Ye s Ye s * Commen t

§ 63.347(a ) o f subpar

t N als o allow

s repor t submission s vi a fa

x an d o n electroni c media - §63-34 0 o

f subpar t N specifies applicaWiity . ••.••-'•-._•-.••' Thi s provisio n i n subpar t A i s being:deleted . Also;al l affede d are a and-majo r sources-are subjec t to subpar t N ; ther e ar e n o exemptions. ; Subpar t N clarifies th e applicabilit y o f eac h paragrap h i n subpar t A t o sources subjec

t t o subpar

t N - .'..-/,
. .-: • . '
. . '•••'•.••
. ->.3 -••"• " •.•*. ' • ... - : Subpar t N specifies permi t requirements fo r are a sources . *. , . Subpar t N clarifies tha

t a n are a sourc e that becomes a majo r sourc e i s subjec

t t o th e require ment s fo r majo r sources . . : Additiona l term s define d i n §63.341 ; "whe n overla p betwee n subpart s A an d N occurs , subpar t N take s precedence . --'-' . _'-.*•..•-.'• . Othe r unit

s use d i n subpar

t N ar e define d i n tha

t subpart . •'".:'• • Excep t replace th e ter m "source " an d "stationar y source " i n § 63.5(a)(1 ) an d (2 ) o f subpar t A wit h

. "affecte d resources. " Applies only t o majo r affecte d sources . ,.*.'"• . Subpar t N (§63.345 ) specifie s requirements fo r th e notificatio n o f constructio n o r reconstructio n fo r affecte d source

s tha t ar e no t major . § 63.345(c)(5 ) o

f subpar t N specifie s whe n th e applicatio n o r notificatio n shal l b e submitted . Applies..t o majo r affecte d sources tha t ar e ne wo r reconstructed . Excep t informatio n shoul d b e submitte d wit h th e Notificatio n of Compliance Statu s require d b y § 63.347(e ) o

f subpar t N . Applies t o majo r affede d sources tha t ar e ne wo r reconstructed excep t (1 ) replac e "source " I n § 63.5(d)(2 ) o

f subpar t A wit h "affecte d source" ; an d (2) actuat contro l efficiencies ar e submitted wit h th e Notificatio n o

f Compliance Statu s require d b y § 63.347(e) . Applies to majo r affecte d sources that ar e ne wo r reconstructed. ' Applies to majo r affecte d sources that ar e ne wo r reconstructed . '•-

" Excep t replace "source " i n §63.5(f)(t ) o f subpar t A wit h "affecte d source. " Newo r reconstructed affecte d source s shal l submit th e reques t fo r approvalo f constructio n o r re constructio n unde r §63.5(f ) of subpar t A b y th e deadlin e specifie d i n § 63.345(c)(5 ) of-subpar t N
. •'• " - '* ' .':' ; .-. ' '

_• ' - ' /

. . ,- ' ' • '• '
. . Excep t replac e "source " I n §63.6(b)(1>-<2 ) o f par t A wit h "affecte d source. " Excep t replace "source " i n §63.6{b)(5).o f subpar t A wit h "affecte d source. " - : Provision s fo r ne

ware a sources tha t becom e majo r sources , ar e contained.i n §63.343(a)(4 ) o f subpartN . . J ^ ••.-.•• •yJ--.... •;.--..'• . -..-J....•'.-.•'-.:• Excep t replac e "source " i n _63.6(c)(1H 2 ) of subpar t A wit h "affecte d sourc

e " Complianc

e provision s to r existin g are a sources tha t become*-majo r source s ar e containe d m

- § 63.343(a)(3 ) o

f subpart-N . §63.342( 0 of subpar

t -N contain s -wort

c practic e standard s (operation 1 and-maintenanc e require- * tnents) tha

t overrid e thes e provisions . §6 3 342(b ) o

f subpar t N specifies whe n th e standard s appl y § 63.344(b ) o

f subpar t N specifie s instance s i n whic h previou s performanc e test result

s fo r existin g source

s are acceptable . Subpar t N does no

t contai n an y opacit

y o r visibl e emissio n standards . - ' - *.-*- • Excep t replace "source " i n § 63.6(0(2)0 ) an d (« ) o f subpar t A wit h "affecte d source. " •;'•- •' J • < v' • l .< • - - , - ^ - - - i • \ .*'•'' ' § 63.343(a)(6 ) o

f subpar t N-specrfiesth e procedures fo r obtainin g a n extensio n o f complianc

e and ' th e dat e b

y whic h suc h requests mus t b e submitted . • > - * , • v * - - ' • Thi s paragrap h ontyjeference s "paragrap h (0(4)-o f thi s section"<forcompl*ance<extensto n provl ^ sions.-8ut , §63.343(a)(6 ) of .subpar t N -also-contatn s provision s fo r requestin g a compliance ex tensio n ' - " * x•-** . . ' ' ' '. . , . - 3 i. .P.3 3



### ,4978y:;^deral ^ Register- / /Rules , and . Regulation ^ y-rV..'

- V; , TABL E 

### 1 T O SUBPAR T

### N O F PAR T 63.-T-GENERA L PROVISION S APPLICABILIT Y T O SUBPART

### N—Continued Genera l provision s referenc e Applie s t o

subpart N Commen t 

## II *

1

ill;

ri Ji,-: 

# I I : i i •ft 63.6(0(8 )

63.6(i)(9 ) 63.6(i) d 0)(iH<v ) 63.6(i)(10)(v)(A )
. 63.6(i)(10)(v)(B) , 63.6(0(11),........
. 63.6(i)(12)(i )

. 63.6(i)(12)(iiHiii)
. 63.6(0(13 ) 63.6(0(14 ) 63.6(0(16 ) 63.60 ) • 63.7{a)(1)........:..
. 63.7(a)(2)0Hvi)
. • 63 T 7(a)(2)(ix)......
. 63.7(a)(3 ) ..... . 63.7(b)(1)...... : 63.7(b)(2 ) 63.7(c )
.... ; 63.7(d ) 63.7(e ) ... . 63.7( 0 • 63.7(g)(1 ) 63.7(g)(3 ) >..*,..
. 63.7(h)(1H2 )
.. . 63.7(h)(3)(i ) .,.:. . 63:7(h)(3)(iiH«i)- • 63.7(h)(4H5 ) ... 63.8(a)(1 ) -*.-...*

. 63.8(a)(2 ) ......;....„. . 63.8(a)(4 ) 33....... 63.8(b)(1 ) :...-.......... . 63.8(b)(2 ) ..;..,;....... . 63.8(b)(3 ) ;.:..-;.:.-..„.. 63.8(c)(1)(i ) ::.L..... : 63.8(c)(1)(ii ) .3....: 63.8(0( 1 )(iii ) y....J63.8(c)(2)-(3 )
....... . 63.8(c)(4H7 )
...... . 63.8(d ) -.....;... : 63.8(6)^;;:.,.,:.^:..:,
. 63.8(0(1 ) £=1.:U „ 6 3 8(0(2)::.... : :„.. . 63.8(0(3 ) 63.8(0(4 ) 63.8(0(5 ) 63.8(0(6)
. 63.8(g )
... . 63.0(a ) 63.9(b)(1)0H« 0 63.9(b)(1)(i|i ) 63.9(b)(2) , 63.9(b)(3)
. Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s Ye s .Ye s Ye s Ye s No..
. Ye s N o •;. . Ye s Ye s Ye s No.
. Ye s Ye s Yes : Ye s Ye s Ye s N o .. : N o Ye s N o .. . No..
. No.
. No y No,
. N o '.. ' NO No;
. No.
. Ye s No.
. Ye s Ye s Ye s No".
. No. . Ye s No.
. No.
. N o . N o - Thi s paragrap h onl yreference s "paragraph s (i)(4 ) throug h (i)(6 ) o f thi s section " fo rcomplianc e ex tensio n provisions
. But , § 63.343(a)(6 ) o f subpart N als o contain s provision s fo rrequestin g a

. complianc e extension
. Thi s paragrap h onl yreference s "paragraph s (i)(4 ) throug h (i)(6 ) o f thi s section " an d "paragraph s .(0(4 ) an d (i)(5 ) of thi s section " fo rcomplianc e extensio n provisions
. But , § 63.343(a)(6 ) o f Sub part N.als o contain s provision s fo rrequestin g a complianc e extension
. Thi s paragrap h onl yreference s "paragrap h (i)(4) " fo rcomplianc e extensio n provisions : But, § 63.343(a)(6 ) o f subpar t N als o contain s provision s fo rrequestin g a complianc e extension
. Thi s paragrap h onl yreference s "paragrap h (0(4)0 ) o r(i)(5 ) o f thi s section " fo rcomplianc e exten -

. sio n provisions
. But , §63.343(a)(6 ) o f subpart N als o contain s provision s fo rrequestin g a com -

. plianc e extension
. .. .

§63.347(d) o f subpar

t N require s notificatio n prio rt o th e performanc e test . §63.344(a ) o f subpart ' N requires-submissio n o f a site-specifi ctes t pla n upo n request. ' • * ' ' • • §63^44(a ) o f subpar

t N specifie s wha t th e tes t pla n shoul d contain , bu t doe s no t requir e tes t pla n approva l or , performanc e audi t samples
. . Excep t replac e "source " i n th e firs t sentenc e o f § 63.7(d ) o f subpart Awit h "affecte d source. "
. Subpar t N als o contain s tes t method s specifi ct o affecte d source s covere d b ytha t subpart.
. § 63.344(c)(2 ) o f subpar t N identifie s CAR B Metho d 42 5 a s acceptabl e unde rcertai n conditions.
. :' • Subpart N identifie s th e item s t o b e reporte d i n th e complianc e tes t ( § 63.344(a) ] an d th e time fram e fo rsubmittin g th e results'{§63.347(01 - Thi s paragrap h onl yreference s "§63.6(0 " fo rcomplianc e extensio n provisions
. But , § 63.343(a)(6) * o f subpart N als o contain s provision s fo rrequestin g a complianc e extension
. '; • -•?••..
. Wor k practice ; standard s ar e containe d i n §63.342( 0 o f subpart N
. §63.344(d) b f subpar

t N specifie s th e monitorin g locatio n whe n ther e are multipl e sources . ''._•-
.. §63.347(g)(4 ) o f subpar t N identifie s reportin g requirement s whe n multipl e monitor s ar e used
. Subpar t N require s proper , maintenanc e o f monitorin g device s expecte d t o b e use d b ysources '

. subjecttosubpartN
. §63.342(0(3)(iv ) o f subpar t N specifie s reportin g whe n th e O& M pla n i s ho t followed
. §63.343(0(2 ) identifie s th e criteri a fo rwhethe rO& M procedure s ar e acceptable
. . •• * -.* , §63.344(c0(2 ) require s appropriat e us e o f monitorin g devices
. . Maintenanc e o f monitorin g device s i s require d b y§§63.342( 0 an d 63.344(d)(2 ) o f subpart N:-:;.
. • Ther e ar e n o performanc e evaluatio n procedure s fo rth e monitorin g device s expecte d t o be used ' t o compl ywit h subpar

t N
. ^;:. ; : . .

- ".'"•:
. ..""••'•, '
. ' "
. ..'•'-
. -• J'<.;'• , sJInstance s ' n whic h th e AdministratO" - ma y approv e alternative s tO th e monitorin g method s an d pro - ' cedure s o f subpar

t N ar e containe d i n § 63.343(c)(8 ) o f subpart N Subpart N doe s no t requir e th e us e o f CEM's
. . - Monitonn g dat a doe s no t nee d t o b e reduce d fo rreportin g purpose s because'Subpart N requires ' measuremen t once/day
. - - - . - • • • • >-,-•>. ' §6 3 343(a)(3 ) o f subpart N require s are a source s t o compl ywit h majo rsourc e provision s i f a n in creas e i n HA P emission s cause s the m t o becom e majo rsource s . - - •> - - §6 3 347(c)(2 ) o f subpar t N specifie s initia l notificatio n requirement s fo rnew-o rreconstructe d af fecte d sources . / ~ >•> -

' - . - • § 63.347(c)(1 ) o f subpar t N specifie s th e informatio n t o b e containe d i n th e initia l notification
. §6 3 347(c)(2 ) o f subpar t N specifie s notificatio n requirement s for-ne wo rreconstructe d sources tha t ar e no t majo raffecte d source s

### Federa l Registe r / Vol . ,60 , No . 1 6 /Wednesday , Jarmary25 , 199 5 / Rules , an dRegulation s .. . 497 9 TA_L E 

### 1 t o SUBPAR

T

### N O F PAR T63.—GENERA L PROVISION S APPLICABILIT Y T O SUBPAR

T

### N—Continued - Genera l provision s referenc e 63.9(b)(4).;...
. 63.9(b)(5 ) .......:. . 63.9(c ) .-...;........... . 63.9(d ) :... . :....: 63.9(e ) „....„.. . 63.9( 0 » 63.9(g )
..... . ......; . 63.9(h)(1H3 ) • 63.9(h)(5 ) i 63.9(h)(6 ) .v . : : . 63.9(i ) ..T . ••—•. 63.9(j ) :. . 63.10(a ) „„....*'
. 63.10(b)(1 ) 63.10(b)(2 ) 63.10(b)(3 ) 63.10(c ) „..:... . 63.10(d)(1 ) 63.10(d)(2 ) 63.10(d)(3 ) 63.10(d)(4 ) 63.10(d)(5 ) 63.10(e )
..... . 63.10( 0 63.1 1 63.12-63.1 5 Applie s t o : subpart N N o -.-. N o ..' : Ye s ....:........ . Yes.;' , .v.. - N o ..... . N o N o N o -. : N o Ye s Ye s Ye s Ye s Ye s N o ....... . N o : N o Ye s N o ..... . N o Ye s N o :. . N o Ye s N o .. . Ye s .Commen t

• i ' - . •

. . . ' '
. ...-- • . . ; . ; , • .. - Thi s paragrap h onl yreference s "§63.6(0(4 ) throug h §63.6(0(6) " fo rcomplianc e extensio n provi sions
. But, § 63.343(a)(6 ) o f subpart N als o contain s provision s fo rrequestin g a complianc e ex -

- tension
. Subpar t N provide s a differen t timefram e fo rsubmittin g th e reques t tha n §63.6(0(4)
. Thi s paragrap h onl yreference s lh e notificatio n date s establishe d i n paragrap h (g ) o f thi s sec tion. " But, § 63.34 7 o f subpar t N als o contain s notificatio n dates
. Notificatio n o f performanc e tes t is i require d b y§ 63.347(d ) o f subpart N
. Subpar t N does no t requir e a performanc e evaluatio n o rrelativ e accuracytes t fo rmonitorin g de - , vices
. '

• §63.347(e) o f subpart N specifies.informatio n t o b e containe d i n th e notificatio n o f complianc e statu s an d th e timeframe fo rsubmittin g thi s Infonnation ; Simila rlanguag e ha s bee n incorporate d int o § 63.347(e)(2)(iii ) o f subpart N
.
§ 63.346(b)
. o f subpar t N specifie s th e record s tha t mus t b e maintained
. Subpar t N applie s t o majo ran d are a sources . Applicabl e requirement s o f §63.10(c ) hav e bee n incorporate d int o § 63.346(b ) o f subpar t N
. §63.347( 0 o f subpar t N specifie s th e timefram e fo rreportin g performanc e tes t results
. Subpart N does no t contai n opacif yo rvisibl e emission s standards
. • §63.342(0(3)(iv ) an d § 63.347(g)(3 ) o f subpart N specif yreportin g associate d wit h malfunctions
. §63:347(g ) an d (h ) o f subpar t N specif yth e frequenc yo f periodi creport s o f monitorin g dat a use d t o establis h compliance
. Applicabl e requirement s of
. §63.10(e ) hav e bee n incorporated.int o § 63.347(g ) an d (h)
. Flare s wil l no t b e use d t o compl ywit h th e emmissio n limits
.
3 . Appendi x A t o par t

6 3 i s amende d b y addin g Method s 30 6 an d306 ai n numerica l orde r

t o rea da s follows : Appendi x A t o par t63—Tes tMethod s Metho d306—Determinatio n o f Chromiu m; Emission s Fro mDecorativ e an dHar d Chromiu mElectroplatin g an dAnodizin g Operation s • , - v 1 . Applicability and

Principle '• - _• 1. 1 Applicability . Thi s metho dapplie s t o th e determinatio n o f

chromium

- (Cr

) i n emission s fromdecorativ e an dhar dchrom e electroplatin g facilitie s an danodizin g operations. ; ' . - J . •'•':..''

- -'••'•-"_

- 1. 2 Principle , (a

) A sampl e i s extracte d isokineticall y fromth e sourc e usin g a n unheate dMetho d5 samplin g trai n (4 0 CF R•'•• par t 60 , appendi x A) , wit haglas s nozzl e ari d prob e liner , bu t

wit hth e filter

omitted . Th e , - C r emission s ar e collecte di n a n alkaline. . solution : 0: 1 N sodiu mhydroxid e (NaOH) o r 6. 1 N sodiu mbicarbonat e (NaHCOj) . Th e :' : collecte dsample s remai n i n th e alkalin e solutio n unti l analysis . Sample s wit hhig hCr , concentration s ma y b e analyze dusin g inductivel y couple dplasma-emissio n - spectrometry (ICP) a t

267.7 2 nm . •

.

. Alternatively , if

improve ddetectio n limit s ar e required , aportio n o f

th e alkalin e impinge r solutio n i s digeste dwit hnitri c aci d an danalyze db y graphit e furnac e atomi c absorptio n spectroscop y (GFAAS ) a t 357. 9 nm . . . . ; * (b) I f i t i s desirabl e t o determin e hexavalent . chromiu m(Cr* 1 *

6 ) emissions , th e sample s ma y b e analyze dusin g a n io n chromatograp h equippe dwit hapost-colum n reacto r (IC / PCR ) ari davisibl e wavelengthdetector . T o increas e sensitivit y for

trac e level s o f

Cr*** 6 , apreconcentratio n syste mcan b e use di n

. conjunctio n wit hth e IC/PCR . 2. Range, SensitivityjPrecision, and Interferences - - 2. 1 Range . Th e recommende danalytica l rang e for eac ho f th e thre e analytica l technique s i s give n below . Th e uppe r limi t of al l thre e technique s ca n b e extende d indefinitel y b y appropriat e dilution . 2.1.1 : GFAA S Range . A s reporte din*-*. " Metho d719 1 o f

SW-84 6 (Citatio n 5 i n Bibliography) , th e optimu mconcentratio n rang e fo r GFAA S i s 5 t o IO

O n g Cr/ 1 of concentrate danalyte . *.-•'• " 2.1. 2 IC P Range . A linea r respons e curve. ' fo r ICP.ca n b e Obtaine di n th e range o f 1 0 t o at leas t 50 0 p g Cr/ 1 o f

absorbin g solution . 2.1. 3 IC/PC RRange . I n 4 0 CF Rpar t 266 , appendi x IX , th e lowe r

limi t ofth e detectio n : rang e for IC/PC Rwhe n employin g a: '-; : -_ preconcentratio n procedur e i s reporte dt o b e abou t 0. 1 p g Cr + «/ l o f

absorbin g solution. " - : 2. 2 Sensitivity . 2.2. 1 Analytica l Sensitivity ; : '. ' - . '•''•••" • 2.2.1. 1 IC P Analytica l Sensitivity . Th e * . minimum , detectio n limit , for IC? ; a s reporte d i n Metho d6010 A o

f SW-^-846, i s 7 ng Cr/1.

j.-- ' . 2.2.1. 2 GFAA S Analytical Sensitivity . Th e minimu mdetectio n limi t fo r GFAAS , a s reporte di n Metho d719 1 o f SW-846 , i s 1 |i g Cr/1 . .*•

• . . ' . 2.2.1. 3 IC/PCRAnalytica l Sensitivity . Th o minimu mdetectio n limi t

fo r IC/PC Rwitha. preconcentrator , a s reportedi n 4 0 CF Rpart 266 , appendi x I

X i s 0.0 5 (ig Cr*«/l . ' 2.2. 2 In-stac k

Sensitivity . Th e in-stac k sensitivit y depend s upo n th e analytica l - detectio n limit , th e volum e of stac k ga s sampled , an dth e total volum e o f th e impinge r absorbin g solution , plu s th e rinses . Usin g th e analytica l detectio n limit s give n i n section s 2.2.1.1 , 2.2.1.2 , an d2.2.1.3 ; astac k - ga s sampl e volum e o f

1. 7 dscm ; ari datota l • liqui dsampl e volum e o

f 50 0 ml ; th e correspondin g in-stac k

detectio n limit s ar e 0.002 1 mg Cr/dsc mfo

r ICP , 0.0001 5 m g Cr/ . dsc mfo r GFAAS , an d0.00001 5 liigCr** / . dsc mfo r IC/PCRwit hpreconcentration.. " . However , i t

i s recommendedthat

th e ... " concentratio n of

C r i n th e analytical. ' .•..",'•'

• solution s b e a t

leas t five time s th e analytica l detectio n limi t

t o optimiz e sensitivity i n th e ' analyses . Usin g thi s guidelin e an dth e same'. . assumption s fo f

impinge r sampl e volume'| . an dstac k ga s sainpl e volum e (50 0 ral an di. 7 dscm , respectively), th e recommende dV . / • • minimu mstac k

concentration s fo

r optlniurh sensitivity ar e 0.010 3 m

g Cr/dsc mfo

r ICP , 0.0007 4 mg Cr/dsc mfo

r GFAAS.-and". ' • . 0.00007 4 rag Cr + «/dsc mfo r laPC Rwith,-'

• preconcentration . I

f required,* fh

e uvstac k detectio n limit s ca n b e improve db y .eithe r increasin g th e stac k

ga s sampl e volume , . sP.3 5



### ,498 0 Federa l Registe r / Vol . 60 , No . 1 6 /

Wednesday , January 25,; ^

'Pi :'• i
. reducin g th e volum e o f th e digeste dsampl e fo r GFAAS , improvin g th e analytica l . detectio n limits , o r

an y combinatio n ofth e three . 2. 3 Precision/Th e following precisio n dat ahav e bee n reporte dfo r th e thre e analytica l methods.

- In th e cas e o f th e GFAA S ther e i s als o bia s data . I n al l cases , whe n samplin g precisio n i s combine dwit h analytica l precision , th e resulting overal l precisio n ma y b e lower . 2.3. 1 GFAA S Precision . A s reporte di n Metho d719 1 o

f SW-846 , i n asingl e . laboratory (EMSL) , usin g Cincinnati , Ohi o ta p wate r spike da t concentration s o f

19,48 ; an d7 7 fi g Cr/1 , th e standar ddeviation s were ±0.1 , ±0.2 , an d±0.8 , respectively. Recoverie s a t thes e level s were 9 7 percent , 10 1 percent , an d10 2 percent , respectively . 2.3. 2 ICP Precision . A s reporte di n Metho d6010 A o f

SW-846 , i n a n EP

A round

robi n Phas e 1 study , seve n laboratorie s applie dth e ICP techniqu e t o acid/distille d wate r matrice s tha t

ha dbee n spike dwith variou s meta l concentrates . Fo r tru e value s o f 10 , 50 , an d15 0 (i

g Cr/1 ; th e mean reporte d value s wer e 10 , 50 1 an d14 9 u g Cr/1 ; an dth e mean percen t

relativ e "standar

ddeviation s wer e 18 , 3.3 , an d3. 8 percent , respectively . 2.3. 3 IC/PC

RPrecision . A s reportedi n 4 0 CF Rpart 266 , appendi x IX , th e precisio n o f th e IC/PC Rwit hsampl e preconcentratio n i s 5 t o 1 0 percent ; th e overal l precisio n fo r sewag e sludg e incinerator s emittin g 12 0 ng / dsc mof Cr*'' 6 an d3. 5 ng/dsc mo

f total C r i s 2 5 percen tan d 9 percen tfo rCr" 1 * 6 an d total . Cr , respectively ; an dfo

r hazardou s waste incinerator s emittin g 30 0 ng/dsc mof Cr +< s th e precisio n i s 20 percent . 2. 4 Interferences . 2.4. 1 GFAA S Interferences . Low , concentration s o

f calciu mand/o r

phosphat e - may caus e interferences ; a t concentration s abov e 20 0 ng/1 , calcium' s effect i s constan t an deliminate s th e effect

o f phosphate . Calciu mnitrat e i s therefor e adde dt o th e concentrate danalyt e t o epsur e aknow n constan t effect . Othe r

matri x modifier s reconunende db y th e instrumen t manufacture r

may als o b e suitable . Nitroge n shoul dno t

b e use da s th e purg e ga s du e t o cyanid e ban dinterference . Backgroun d correctio n ma y b e require dbecaus e o f possibl e significan t

level s o f nonspecifi c absorptio n an dscatterin g a t th e 357. 9 n m analytica l wavelength . Zeeman o r Smith

Hieftj e backgroun dcorrectio n i s •" * recommendedt o correc t

for interference s du e t o hig hlevel s of

dissolve dsolid s i n th e . ' alkalin e impinge r

solutions . ''..

-

- 2.4. 2 IC P interferences.^ ; ' \ 2.4.2. 1 IC P Spectra l Interferences , (a ) Spectra l interference s ar e cause dby : (1 ) Overla p of

aspectra l lin e fromanothe r element , „ (2 ) Unresolve doverlap of molecula r

ban d 'spectra , (3 ) Backgroun dcontributio n from continuou s o r

recombinatio n phenomena ; an d
_

, > (4 ) Stra y ligh t fromth e lin e emissio n o f y' 5 V high-concentratio n elements....',.^.. . .:.-..,•.,.-. . (b ) Spectra l overlap may b e compensate d''. ' for b y compute r

correctin g th e ra w dat aafte r , monitorin g an dmeasurin g th e interfering element . At

th e 267.72-nmCr

analytica l wavelength , iron , manganese , an duraniu m- ar e potentia l interferin g elements . Backgroun dan dstra y ligh t interference s ca n usuall y b e compensate dfor b y abackgroun d. correctio n adjacen t

to th e analytica l line . Unresolve doverla p require s th e selectio n o f a n alternativ e C

r wavelength . Consul t

th e instrumen t

manufacturer' s operatio n manua l for interferenc e correctio n procedures . 2.4.2. 2 IC P Physica l Interferences . Hig h level s o f dissolve dsolid s i n th e sample s ma y * caus e significan t

inaccuracie s du e to sal t buildu p a t

th e nebulize r

an dtorc htips . Thi s proble mca n b e controlle db y dilutin g th e sampl e o r providin g for

extende drinse time s betwee n sampl e analyses . Standard s ar e prepare di n th e sam e matri x a s th e sample s (i.e* , 0. 1 N NaOH o r

0. 1 N NaHC0 3 ) . 2.4.2. 3 ICP Chemical Interferences . Thes e includ e molecular

compoun dformation , ionizatio n effect s an dsolut e vaporizatio n effects , an dar e usuall y not significan t

i n ICP , especiall y i

f th e standard s an dsample s ar e matri x matched. ' • 2.4. 3 IC/PCRInterferences . Component s i n th e sampl e matri x ma y caus e Cr + 6 to convert t o trivalen t

chromiu m(Cr*** ) o r

, caus e Cr* 3 t o convert

to.Cr* 6

. The ' -chromatographi c separatio n o f Cr* * usin g io n chromatograph y reduce s th e potentia l for othe r metal s t o interfere wit hth e post - . colum n reaction. Fo r

th e IC/PC Ranalysis , onl y compound s that

coelut e wit hCr* 6 an d affec t th e diphenylcarbazid e reactio n wil l . caus e interference . Periodi c analyse s of reagen t wate r blank s ar e use dto demonstrat e tha t th e analytica l syste mi s essentiall y free o f contamination . Sampl e cross - y contaminatio n tha t

ca n occu r

whe n high

- * leve l an dlow-leve l sample s o r standard s ar e analyze dalternatel y i s eliminate db y thoroug hpurgin g ofth e sampl e loop . Purgin g can easil y b e achieve dby increasin g th e . - injectio n volum e ofth e sample s t o te n times th e siz e of

th e sampl e loop . * • •.

• • ,_'_y 3.Apparatus ...*.' . *.

- . ••_. ' y - •-••y--;. • •• ' ; 3. 1 Samplin g Train . A schemati c o f th e samplin g trai n use din thi s metho di s show n i n Figur e 306-1 . Th e trai n i s tb e sam e as -.. . Metho d5 , sectio n 2^ 1 (4 0 CF Rpar t ^0. . y :, . appendi x A) , excep t

thatth e filter

is-omitted, , an dquart z o r

bcnosilkat e glas s mus t

b e used . - fo r th e prob e flozzJeandline r j n plac e o f

:v — stainles s stee l I t

i s no t necessar y t o hea t

th e ; prob e liner . Prob e fittings o f plasti c suc ha s ; * Teflon , polypropylene, et c ar e recommended ove r meta l fittings t o preven t

contamination. . I f desired , asingl e combine dpiiofaeoozzle

an dline r may b e used , bu t

such asingl e .glas s piec e is not

arequiremen t

ofthi s y **

• methodology . Us e 0. 1 N NaO H arO. 1 N - NaHCO j i n th e impinger s i n plac e o f water . 3. 2 Sampl e Recovery-Sanjea s Metho d5.

- section_. 2 (4 0 CF

Rpar t 60 . -appendi x A) , withth e folio wta g exceptions

- • , , _ '•'*3:2.i'' : ftbbe-Lin«andPrbbiBiKozzl e '" . Brushes . Brushe s ar e no t

necessary for. • sampl e recovery . I

f aprob e brus hi s used , i t mus t b e nonmetallic ! ••••*.'••.• . 3.2. 2 Sampl e Recover

y Solution . Us e 0^ 1 N NaO H o r

a i N.NaHCOj , whicheve r wa s use da s th e impinge r

absorbin g solution , i n plac e o f aceton e t o recover

th e sample . 3.2. 3 Sampl e Storag e Containers . Polyethylene , wit hleak-fre e scre w cap , 50 0 . ' mlo r 1.000 ml . 3.2. 4 Filtratio n Apparatu s for IC/PCR . Teflon , o r

equivalent , filter

holde r an d0.45 . I_n acetate , tx

equivalent. " filter . 3. 3 Analysis . Fo r

analysis ^ th e followin g equipmen t

i s needed . -. . '• • .'• • 3.3. 1 General . 3.3.1- 1 Phillip s Beakers . (Phillip s beaker s ar e preferred , bu t

regular beaker s ca n als o be , used. ) y_. - ' 3.3.1. 2 Ho t

Plate . • 3.3.1. 3 Volumetri c Flasks . Clas s A, , variou s size s a s appropriate . ' - - , ' . 3.3.1. 4 Assorte dPipettes . " • 3.3. 2 Analysi s b y GFAAS . "3.3.2. 1 Chromiu mHollo w Cathod e Lamp o r Electrodeles s Discharg e lamp . 3.3.2. 2 Graphit e Furnac e Atomic . . , Absorptio n Spectrophotometer . . 3. 3 J Analysi s b y JCP . .. . 3.3.3. 1 IC P Spectrometer . Computer

controlle demissio n spectromete r wit h backgroun dcorrectio n an dradio frequency generator . .. . '.'".- • 3.3.3.2 : Argo n Ga s Supply."Weldinggrad e o r better . ' . _ 3.3. 4 Analysi s b y IC/PCR . 3.3.4. 1 IC/PC

RSystem . Hig hperformanc e liqui dchromatograp hpump , sampl e •' • injectio n valve , post-colum n reagen t delivery an dmixin g system,-an davisibl e detector , capabl e o f

operatin g a t

52 0 nm . all . witha nonmetalli c (o r

inert ) flo w path . An ' electroni c pea

k are amod e i s recommended , bu t othe r recordin g device s an dintegration ' technique s ar e acceptabl e proyidedth e -.* • repeatabilit y criteri aan dth e linearit y criteri a fo r thecalibratio n curv e describe di n sectio n 6.4. 1 ca n b e satisfied . A sampl e loadin g ' syste mwil l b e require di f preconcentratio n i s employed.* . ..... . •• .- ' : , . •.- • 3.3.4. 2 .'.AnalyticalColumn..A_i£ h.; , performanc e io n chromatograp h(HPIC ) • : nonmetalli c colum n wit

hanio n separatio n - • * . characteristic s an dahig hloadin g capacit y • designe df

w separatio n o f

meta l chelatin g i. co mpound s t o preven t

meta l interference..:'- . •••'

• Resolutio n describe di n sectio n 5. 5 mus t be'.' ' obtained . A nonmetalli c guar dcolum n wit h' th e sam e ion-exchang e materia l i s '" ' : -v ; '-'-; ' recommended.- " '.'"'<!"- ' -* " 3.3.4 3 Preconcentratio n Column . A n - ' 'j HPIC nonmetalli c colum n wit h-acceptabl e N anio n retentio n characteristic s an dsampl e ''" • loadin g rale s a s describe di n sectio n 5.5 . BILUN G COD E 6S60-60- P,•- " ,. . - ,^_!-\ i 'I .- ' /P.3 6



### Federa l Registe r

/ Vol. ' 60 , No . 16,/Wednesday , Jariuaty 25 , 199 5 / Rule s an dRegulation s y...498 1

* 1 ' u * . . u - i

* 

## Figur e 306-1 . Sampling^rai n Schematic .

BILLIN G COO E 6S60-6O- C

### 4082y,,Federa l Register . / Vol 160,No/;16^;WedJne^day^i|ami^r y 25 , 1995 J l Rule s an dRegulation s 3.3:4, 4 0.45-ju n Filte r Cartridge : Fo r

th e removal o f

insoluble;material . T o b e use djus t prio r t o sampl e injection/analysis . 4. Reagents Unles s otherwis e indicated , al l reagent s shal l confor mt o th e specification s establishe db y th e Committe e o n Analytica l Reagent s o f

th e America n Chemica l Societ y (AC S reagent

grade) . Wher e suc h specification s ar e no t

available , us e th e bes t availabl e grade . . 4. 1 Sampling . 4.1. 1 Water . Reagen t

wate r tha t conform s t o AST M Specificatio n D1193-77 , Typ e II (incorporate db y reference—see § 63.14) . I t i s recommendedtha t

wate r blank s b e checke d prio r t o preparin g samplin g -reagent s t o ensur e tha t

th e C r conten t i s les s tha n th e analytica l detectio n limit . 4.1. 2 Sodiu mHydroxid e (NaOH ) -Absorbin g Solution , 0. 1 Nor-Sodiu m Bicarbonat e (NaHCOj, 1 Absorbin g Solution , 0. 1 N . Dissolv e 4. 0 g o f sodiu mhydroxid e i n 1 1 o f water , o r

dissolv e 8. 5 g o f

sodiu m bicarboitat e i n 1 1 o f

water . 4. 2 Sampl e Recovery . j : 4-2. 1 0. 1 N NaO H o r 0. 1 N NaHCOj . Se e •j sectio n 4.1.2 . Us e th e sam e solutio n for - recover y a s wa s use di n th e impingers . -• • 4.2. 2 p H Indicato r

Strip , fo r

IC/PCR . p H indicato r capabl e o f

determinin g th e p H o f solution s betwee n th e p H range o f 7 an d12 , a t 0. 5 p H intervals . _-,-.- ' 4. 3 Sampl e Preparatio n an dAnalysis . 4.3. 1 Nitri c Aci d(HNO3) , Concentrated , fo r GFAAS . Trac e metal s grad e o r bette r HNO j mus t

b e use dfo r

reagent preparation . Th e AC S reagen t

grad e HNO j i s acceptabl e

- fo r cleanin g glassware . * 4.3. 2 HNO3,1. 0 percen t (v/v) , fo r

GFAAS . Add , wit hstirring , 1 0 m l o f concentrate d HNO j t o 80 0 m l o f

water . Dilut e t o 1,00 0 m l wit hwater . Thi s reagen t shal l contai n les s than.0.00 1 ni g Cr/1 . .*

* 4.3. 3 Calciu mNitrat e Ca(NOj) 2 Solutio n (1 0 u g Ca/ml ) fo r

GFAAS . Prepar e th e
, solutio n b y weighin g 3 6 mgc f Ca(NOj) 2 int o a1 1 volumetri c flask . Dilut e wit hwate r t o 11 . 43. 4 Matri x Modifier , fo r GFAAS . Se e instrumen t

manufacturer' s manua l fo r suggeste dmatri x modifier . • - 4.3. 5 .Chromatographi c Eluent , fo r IC / PCR . Th e eluen t

use di n th e analytica l syste mi s ammoniu msulfat e based . Prepar e b y addin g 6. 5 m l o f

2 9 percen t

ammoniu m

. hydroxid e (NH4OH ) an d3 3 g o f ammoniu m sulfat e ((NfUfeSO J t o 50 0 m l o f reagent water . Dilut e t o 1. 1 wit hreagent wate r an d mix-well . Othe r

combination s o f

eluent s and/ : o r column s ma y b e employe dprovide dpea k resolution, a s describe di n sectio n 5.5 , repeatabilityan dlinearity , a s describe di n . . * sectio n 6.4.1 , an danalytica l sensitivit y ar e acceptable . ....: • .-...- " ••'•••;• ' •*.-.',,.'•- . - vy , ..-•,..

• 4.3. 6 : Post-Colurn hReagent , ibrTC/PCR: ; .>• ' A n effectiv e post-column:reagen t for-Us e wit h ; th e chromatographi c eluen t describe di n sectio n 4.3. 5 i s adiphehylcarbazid e (DPC ) ?;l l base dsystem . Dissolv e 0. 5 g o f 1,5

- diphenylcarbazid e i n 10 0 m l o f AC S grad e methanol . Ad d50 0 m l b f reagent wate r • • $ containin g 5 0 m l o f 9 6 percen t spectrophotometri c grad e sulfuri c acid . Dilute , t o 1 1 wid i reagen t water . • 4.3. 7 Chromiu mStandar dStoc k Solutio n (1,000mg/l) . Procura acertifie daqueou s standar do r

dissolv e 2.82 9 go f

potassiu m dichromat e (KiCrtOi.) i n wate r an ddilut e t o U . • - '

. 4.3.8 . Calibratio n Standard s fo r GFAAS . Chromiu msolution s fo r GFAA S calibratio n shal l b e prepare dt o contai n l.Opercen t (v / * v ) HNOj . Th e zer o standar dshal l b e 1. 0 percen t (v/v ) HNOj . Calibratio n standard s shoul db e prepare ddail y b y dilutin g th e C r standar dstoc k

solutio n (sectio n 4.3.7 ) wit h 1. 0 percen t

HNO3 . Us e a t

leas t fou r standard s t o mak e th e calibratio n curve . Suggeste d level s ar e 0 , 5,50 , an d10 0 u g Cr/1 . 4.3. 9 Calibratio n Standard s fo r IC P o r IC / PCR . Prepar e calibratio n standard s fo r IC P o r IC/PC Rb y dilutin g th e C r standar dstoc k solutio n (sectio n 4.3.7 ) wit h0. 1 N NaO H o r 0. 1 N NaHCOj , whicheve r wa s use da s th e impinge r absorbin g solution , t o achiev e a matri x simila r

t o th e actua l fieldsamples . Suggeste dlevel s ar e 0 , 25,50 . an d10 0 fig Cr / 1 fo r ICP . an d0.0.5 . 5 , an d1 0 p g Cr*«/ 1 fo r IC/PCR . 4. 4 Glasswar e Cleanin g Reagents . 4.4. 1 HNOj , Concentrated : Th e AC S reagen t grad e o r equivalen t

- .4.4. 2 Water . Reagen t wate r tha t conform s t o AST M Specificatio n D1193-77 , Typ e II , (incorporate db y reference—%ee § 63.14) . . 4.4. 3 HNOj , 1 0 percen t (v/v) . Ad dwit h stirrin g 50 0 m l o f

concentrate dHNO j t o a flask containin g approximatel y 4,00 0 m l o f water . Dilut e t o 5,00 0 m l wit hwater . Mi x well . Th e reagen t

shal l contai n les s tha n 2 u g Cr/1 . .. . ' « ' * ' 5 . Procedure 5. 1 Sampling , (a ) Sam e a s Metho d5 , sectio n 4. 1 (4 0 CF Rpar t 60 , appendi x A) . . excep t omi t th e filter

an dfilter

holde r from th e samplin g train , us e aglas s nozzl e an d prob e liner , d o no t

hea t th e probe , plac e 10 0 m l o f 0. 1 N NaO H o r

0. 1 N NaHCOj i n eac h o f th e first tw o impingers , an drecordth e dat afo r eac hru n o n adat ashee t suc ha s th e on e show n i n Figur e 306-2 . (b ) Clea n al l glasswar e prio r t o samplin g i n ho t soap y wate r

designe dfo r

laborator y cleanin g o f

glassware . Next , rinse th e glasswar e thre e time s wit hta p water , • followe db y thre e additiona l rinses wit h reagen t water . The n soa k

al l glasswar e i n 1 0 percen t (y/v ) HNO j solutio n fo r aminimu m o f 4 hours , rins e thre e time s wit hreagen t water , an dallowe dt o ai r dry . Cove r

al l glasswar e opening s wher e contaminatio n ca n occu r wit hParafilm , or.equivalent , unti l the . - samplin g trai n i s assemble dfo r sampling .

. (c ) I f th e sampl e i s goin g t o b e analyze dfo r Cr-**« usin g IC/PCR , determin e th e p H o f th e ' . solutio n i n th e firs t

impinge r

a t th e en dofth e samplin g m n usin g ap H indicator , strip . Th e •- • p H o f th e solutio n shoul db e greate r tha n 8.5. ! I f not , th e concentratio n o f th e NaO H or . NaHCOj impinge r

absorbin g solutio n shoul d• b e increase dt o 0. 5 N an dth e sampl e should.. . b e rerun . . : . .. . 5. 2 Sampl e Recovery . Follo w th e basi c . procedure s o f

Metho d5 , section.4-2 , wit hth e exception s note dbelow ; afilter i s no t recovere dfro mthi s train . 5.2. 1 Containe r

No . 1 . Measur e th e volum e ofth e liqui di n th e first, second , an d thir dimpinger s an dquantitativel y transfe r int o alabelle dsampl e container . Us e ' approximatel y 20 0 t o 30 0 m l o f 0.1 . N NaO H o r 0. 1 N NaHCOj t o rinse th e prob e nozzle , prob e liner , thre e impingers , an dconnectin g glassware ; ad dthi s rins e t o th e sam e container . 5.2. 2 ContainerNo . 2 (Reagen t Blank) . Plac e approximatel y 50 0 m l o f 0. 1 N NaO H o r 0. 1 N NaHCOj absorbin g solutio n i n a labele dsampl e container . 5.2J . Sampl e Filtratio n for IC/PCR . I

f th e sampl e i s t o b e analyze dfo r Cr* « b y IC/PCR , i t mus t b e filteredimmediatel y followin g recovery t o remov e an y insoluble'matter . Nitrogeirga s ma y b e use da s apressur e assis t t o th e filtration process . Filte r th e entir e content s o f

Containe r

No . 1 throug ha0.45

- ji macetat e filter

(o r equivalent) , an dcollec t th e filtrat e i n a1,00 0 m l graduate dcylinder . Rins e th e sampl e containe r wit hreagen t wate r thre e separat e times , pas s thes e rinse s throug hth e filter, an dad dth e rinse s t o th e sampl e filtrate. Determin e th e final volum e o f th e filtrat e an drinse s an dretur n the mt o th e rinse dpolyethylen e sampl e container . 5.2.4 . Sampl e Preservation . Refrigerat e sample s upo n receipt. (Container s Nos . 1 and . 2) . 5. 3 Sampl e Preparatio n an dAnalysi s fo r GFAAS . Fo r

analysi s b y GFAAS , a n aci d digestio n o f

th e alkalin e impinge r

solutio n i s required . Tw o type s o f blank s ar e require d fo r th e analysis . Th e calibratio n blan k i s use d i n establishin g th e analytica l curve , an dth e reagen t blan k i s used v t o asses s possibl e contaminatio n resultin g fro mth e Sampl e processing ! Th e 1. 0 percen t HNOj i s th e calibratio n blank . Th e 0. 1 N NaO H solutio n o r th e 0. 1 N NaHCO

j fromsectio n S.2. 2 i s th e reagen t blank . The'reagen t

blan k mus t b e carrie dthroug hth e complet e analytica l procedure , includin g th e aci ddigestion , an d mus t contai n th e sam e aci dconcentratio n i n th e final solutio n a s th e sampl e solutions . 5.3. 1 Aci dDigestio n fo r GFAAS . (a ) I n a beaker , ad d1 0 m l o f

concentrate dHNOj t o asampl e aliquo t

o f 10 0 m l take n fo r

analysis . Cove r th e beake r

wit hawatc hglass . Plac e - th e beake r

o n aho t plat e an dreflux th e sampl e dow n t o nea r

dryness. . Ad danothe r ' 5 m l o f concentrate dHNOj t o complet e th e digestion . Carefull y reflux th e sampl e volum e dow n t o nea r

dryness . Was hdow n th e beake r wall s an dwatc hglas s wit hreagent water . Th e final concentratio n o f HNOj i n th e solutio n shoul db e 1 percen t (v/v) . Transfe r th e digeste dsampl e t o a5 0 m l volumetri c * flask. Ad d0. 5 m l o f

concentrate dHNOj , an d liri l o f th e ,10*ig/m l b f

C a(Npj)j' . ' (b ) Dilut e t o 5 0 ml.wit hreagent-water. A differen t filial volume-ma y b e used , base do n th e expecte dC r

concentration , bu t

th e HNOj ' concentratio n mus t

b e maintaine dat' 1 .'•'

• • •' • percen t (v/v) .

' BILUN O COO E 6S60-50- P .

### Plant Location

Operator

Date Ru n No

- Sampl e bo x No

Mete r bo x No. _ Meter AH @ C factor SCHEMATI C O F STAC KCROSS.SfXTIO N 

### Pito t tub e coefficient , C r 

### Ambient temperature Barometri c pressur e •

_ Assume dmoisture , %. Prob e length , (ft.)" . Nozzl e identificatio n No . -__. Averag e calibrate dnozzl e diameter , (in.)

- Lea k rate , (cfm

) Stati c pressure , (in . Hg ) 

### 3 1 tare C J 

# 4 % $ © 

### Z o o

Travers e poin t numbe r \

Tota l Samplin g

tim e (min. )
i

Averag e V Vacuu m (in-Hg )

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temperatur e (T 8 )( 8 F )

. . ' • Velocit y

hea d (in . H 2 0 ) Pressur e

differentia l ' * acros s orific e mete r (in . H 2 0 )

• ' ' • - . * " '•'. Ga s mete r

•: • readin g (ft 3 )

- • ' Ga s sampl e

temperatur e atdr y ga s mete r Inle t CF )
8

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### ;498 4 ys^-Fedefal ; Registe r ^Vo k 60 ; No ; ,16

I Wednesd4y, i Januar y 25 , .199 5 . / Rule s an dRegulation s 

## n

m

'fc,** - 

# if* ;
• > £: • is'- 1 '

' ••! ' -- 1 5.3. 2 Sampl e Analysi s b y GFAA& (a ) Th e 357.9-n mwavelengt

hlin e shal l b e used : •' Follo w th e manufacturer' s operatin g instruction s fo

r al l othe r spectrophotomete r parameters . (b ) Furnac e parameter s suggeste db y th e manufacture r

shoul db e employeda s guidelines . Sinc e temperature-sensin g mechanism s an dtemperatur e controller s ca n vary betwee n instrument s and/o r withtime , th e validit y ofth e furnac e parameter s mus t b e periodicall y confirme db y systematically , alterin g th e furnac e parameter s whil e analyzin g astandard . In thi s manner , losse s of analyt e du e t o higher-than-necessary

. temperatur e setting s o r

losse s i n sensitivit y du e t o les s tha n optimu msetting s can b e minimized. . Similar

verificatio n c f

furnac e parameter^ma y b e require dfor comple x * sampl e matrices . Calibrat e th e GFAA S syste mfollowin g th e procedure s specifie di n . sectio n 6 . A / * (c ) Injec t ameasure daliquo t

of digeste d sampl e int o th e furnac e an datomize.-I f th e

. concentratio n foun dexceed s th e calibratio n /range , th e sampl e shoul db e dilute dwithth e calibratio n blan k

solutio n (1. 0 percen t

HNOj ) an dreanalyzed . Consul t

th e operator' s manua l fo

r suggeste dinjectio n volumes . Th e us e ofmultipl e injectionsca n improv e accuracy an dhel p detec t

furnac e pipettin g errors . (d ) Analyz e aminimu mof on e matrix

matche dreagen t

blan k pe r sampl e batc ht o determin e i

f contaminatio n o r

an y memor

y effect s ar e occurring . Analyz e acalibratio n blan k an damidpoin t

calibratio n chec k

- standar dafter

approximatel y every .1 0 sampl e injections . -•' • y . . (e) Calculat e th e Cr

concentrations : ' (1 ) B y th e metho do

f standar daddition s (se e operator' s manual) , (2 ) Fro mth e calibratio n curve , o r (3 ) Directl y fromth e instrument' s concentratio n readout . Al l dilutio n o r concentratio n factors.mus t b e take n int o account . Al l result s shoul db e reporte di n |i g Cr/m l wit hii p t o thre e significan t figures. 5. 4 Sampl e Analysi s b y ICP . (a ) Th e ICP measuremen t

i s performe ddirectl y o hth e alkalin e impinge r

solution ; aci ddigestio n i s '• not necessary provide dth e sample s an d- standard s are matri x matched . However , IC P shoul donl y b e use dwhe n th e solutio n . analyze dha s aCr'concentratio n greate r tha n 35|ig/l . * (b ) Tw o type s o

f blank s ar e require dfo

r th e analysis . Th e calibratio n blankii s use din' ' * establishin g th e arialyticalcurve , an dth e reagen t blan k i s use dt o asses s possibl e contaminatio n resultin g fro msampl e : 'processing ; Us e eithe r

0: 1 N NaO H o r

O.T N

- NaHCOjVwhicheyer.wasi'usedforthe.'*

- J- • . •'. * impinger.absbrbiri g solution , forthe y .--:*-•--

-

. " calibrationbiank'.:The;caiibratibnblankca n * -b e prepare dfresh.in ; t|ie laboratory ; i t does- : : not have't o be.;fromth e sam e batc hof - y

- solutio n tha t

was use di n the.'field . Prepar e

. - • asufficien t

quatititytoflus b th e system- • !

- betwee n standard s an dsamples.Th e reagen t iblankfsectio n 5.2.2 ) i s asample'.qf th e • •'__' impinge r solutio n use dfor'samplecollectio n .*•'. • tha t i s Collecte di n th e fielddurin g th e testin g .-program.'•-. „ v*/*'-'*.:.....

_••'•';' . '•-..',:•. V.*.,'*,*" (c ) Se t .u p th e instnimeh t

withprope r

" operating-parameters , includin g wavelength . backgroun dcorrectio n setting s (i f necessary) , an dinterferin g elemen t

correctio n setting s (i

f necessary) . Th e instrumen t mus t b e allowe d t o becom e thermall y stabl e before beginnin g performanc e o

f measurement s (usuall y requiring a

t leas t 3 0 mi n o f

operatio n prio r t o calibration) . Durin g thi s warmu p period , ' th e optica l calibratio n an dtorc hpositio n optimizatio n may b e performe d(consul t th e ' operator' s manual) . - ' • (d) Calibrate th e instrumen t accordin g t o di e instrumen t

manufacturer' s recommended . procedures , an ddi e procedure s specifie di n sectio n 6.3 . Befor

e analyzin g th e samples , • • reanalyz e th e highes t

calibratio n standar da s if i t wer e asample . Concentratio n value s obtaine dshoul dnot

deviat e fromth e actual , value s b y more tha n 5 percent , o r th e establishe dcontro l limits , whicheve r i s lowe r (se e section s 6 an d7) . I

f the y do , follo w di e recommendations o f

th e instrumen t manufacture r

t o correc t

fo r thi s condition . (e) Flus hth e syste mwit hth e calibratio n blan k solutio n fo

r at leas t 1 mi n before th e analysi s of

eac hsampl e o r

standard . Analyz e th e midpoin t

calibratio n standar dan dth e calibratio n blank

afte r eac h1 0 samples . Us e th e averag e intensity ofmultipl e exposure s fo r bothstandardizatio n an dsampl e analysi s

. t o reduc e rando merror . (f ) Dilute an dreanalyz e sample s tha t ar e mor e concentrate dtha n th e linear calibratio n limi t o r us e an alternate , les s sensitiv e C r wavelengt hfo r whic hqualit y contro l dat aare alread y established . (g) I f dilution s ar e performed , th e * appropriat e factor s mus t b e applie dt o sampl e values . Al l result s shoul db e reported

i n |i g Cr/ml withu p t o thre e significan t figures . 5. 5 Sampl e Analyse s b y IC/PCR . (a ) th e Cr + 6 conten t

o f th e sampl e filtrate i s determine db y IC/PCR . T o increas e sensitivity fo

r trac e level s o f

chromium , a preconcentratio n syste mi s als o use di n : conjunctio n wid i th e IC/PCR . '. (b ) Prio r t o preconcentratio n and/o r analysis , filter

al l fieldsample s throug ha 0.45-u mfilter. Thi s filtratio n shoul db e conducte djus t

prio r t o sampl e injection/ analysis . (c ) Th e preconcentratio n i s accomplishe d b y selectivel y retainin g th e analyt e o n asoli d absorben t (a s describe di n sectio n 3.4.3.3) , : followe db y removal ofth e analyt e fromth e absorbent : Inject

th e sampl e int o asampl e loo p o f th e desire dsiz e (us e repeate d -loading s o r

alarger siz e loo p for

greate r .

. sensitivity) . Th e Crt 6 i s collecte do n the . * -resi n be dofth e column . Switc hth e injectio n valv e s o tha t

th e eluen t

displace s th e -' • concentrate dCr + 6 sample , movin g i t of f th e i -preconcentratio n colum n an dont o th e I C ; •j anion separatio n column.-Afterseparatio n tfro mothe r

sampl e components, - th e Cr*. * ''' • j form s aspecifi c comple x in" th e jpbst-cdluinn ; : reacto r withth e DP

C reactio n solution/and'•'*'. .

- th e comple x i s detecte db y visibl e absorbance : ; at a*wayelengt

ho f 52 0 nm . Th e amoun t

o f ,. . absorbanc e measure di s proportiona l t o th e concentratio n ofth e Cr**- 6 comple x formed . Compar e th e I

C retentio n tim e an ddie

'___ . : ' - • absorbanc e o

f th e Cr + 6 comple x wit hknow n •Cr"* 6 standard s analyze dunde r identical.:.'- . condition s t o provid e bothqualitativ e an d

- . quantitative analyses . ' (d ) Tw o type s of blank s ar e requiredfo

r th o analysis . Th e calibratio n blan k i s use di n ' establishin g th e analytica l curve , an dth e reagent blan k i s use dt o asses s possibl e contaminatio n resultin g fromsampl e

. processing . Us e eithe r

0. 1 N NaO H o r

0. 1 N NaHCOj , whicheve r

was use dfo

r th e impinge r solution,

- fo

r th e calibratio n blank . Th e calibratio n blan k

ca n b e prepare dfresh i n th e laboratory ; i t

doe s not hav e t o b e from th e sam e batc hof

solutio n tha t

wa s use dI

n th e field. Th e reagen t

blan k (sectio n 5.2.2 ) i s asampl e of

th e impinge r

solutio n use dfo

r sampl e collectio n tha t

i s collecte di n th e field durin g th e testin g program . (e ) Prio r t o sampl e analysis , establis ha- 'stabl e baselin e withth e detecto r se t a t th e ' requiredattenuatio n b y settin g th e eluen t flow rat e at

approximatel y 1 ml/mi n an dth o post-colum n reagent

flow rat e a

t approximatel y 0. 5 ml/min . Note : A s lon g a s th e rati o o

f eluen t flow rat e t o PC

Rflow rat e remains constant , th e standar dcurv e shoul d

. remai n linear . Inject

asampl e o

f reagen t wate r t o ensur e that

n o Cr + * appear s i n th e wate r blank . , (f ) First , injec t

th e calibratio n standard s prepared , a s describe di n sectio n 4.3. 9 t o cove r th e appropriat e concentratio n range , startin g withth e lowes t

standar dfirst/Next, inject , i n duplicate , th e calibratio n referenc e . standar d(a s describe di n sectio n 7.3.1) , followe db y th e reagen t

blan k (sectio n 5.2.2) , an dth e fieldsamples . Finally , repeat th e injectio n o

f th e calibratio n standard s t o asses s instrumen t

drift . Measur e area s o r height s o f th e Cr+ «/DP C comple x • • chromatogra mpeaks . Th e respons e fo r replicate.'cbrisecutive'injection s o f sample s mus t be'withi n 5 percen t

ofth e averag e response , : o r

th e injectio n shoul db e repeate d unti l th e 5 percen t

criterio n can b e met . Us e th e averag e respons e (pea k area s o r heights) ' fromth e duplicat e injections , of calibratio n standard s t o generat e alinear calibratio n curve . Fro mth e calibratio n curvo , determin e th e concentration s q

f th e fiel dsample s employin g di e averag e respons e fro mth e duplicate.injections . ' 6 . Calibration /_,..._' •••6.1 i Samplin g Trai n Calibration . Perfor m al l ofth e calibration s describe di n Metho d5 , sectio n 5 (4 0 CF

Rpart 60 , appendi x A) . Th e alternat e calibratio n procedure s describe din sectio n 7 of

Metho d5 (4 0 CF

Rpart 60 , appendi x A),ma

y als o b e used . , •:";*6.2/...GFAASCalibration.Eitherrun a. serie s of chromiu mstandard s an daj. calibratio n blan k

an dconstruc t

acalibratio n ' - curv e b y plottin g th e concentration s of th e ' : ; standard s agains t

th e absorbencies , o r

usin g ' . .th e metho do f

standar dadditions , plo t

adde d : ; concentratio n versu s absorbahCe.,For . instniment s that

readdirectl y i n -...., • •^'concentration , se t

th e curve ' correcto r

t o rea d

. - ou t th e prope r

concentration , i

f applicable.. , •^Thi s i s customaril y performe dautomaticall y ' :. : wit hmosUnstrumen t

computer-base ddat a• , systems . .

A ';'•',,• . . •„-

. -... . 6.2. 1 GFAAS Calibratio n Curve . I f a. calibratio n curv e i s used , j t shoul db e prepare ddail y withaminimu mo f a• calibratio n blan k

an dthre e standards .

. Calibratio n standard s fo r tota l chromiu m. shoul dstart

with ' 1 percen t

v/v HNO J with•P.4 0



### Federal,Regis^ ^ Vol*,^/*,-No;^16L-.*/-:Vy9dne^y|...J^ar y 25 . 1995./. . Rule s and . Regulation s 498 5

n o chromiu mfo

r the'calibratio n blank , wit h- appropriat e increase s i n total chj-an-uum . concentratio n fo

r the'othe r calibratio n , ' standard s (se e sectio n 4.3.9:1 . Calibratio n standard s shoul db e prepared-fres hdaily . 6. 3 IC P Calibration . Calibrat e th e : instrumen t

accordin g t o th e instrumen t manufacturer' s recommende dprocedures , usin g acalibratio n blan k

an dthree , standard s fo r th e initia l calibration . Calibratio n .. . standard s shoul db e prepare dfreshdaily , a s describe di n sectio n 4.3.9 . B e sur e tha t

. sample s an dcalibratio n standard s ar e matri x matched . Flus hth e syste mwit hth e • . . . calibratio n blan k

betwee n eac hstandard . Us e th e averag e intensity , o f

multipl e exposure s fo r bot hstandardizatio n an dsampl e analysi s t o reduc e rando merror . 6. 4 IC/PCRCalibration . Prepar e a calibratio n curv e usin g th e calibratio n blan k an dthre e calibratio n standard s prepare d freshdail y a s describe di n sectio n 4.3.9 . Run th e standard s wit hth e fieldsample s a s describe di n sectio n 5.5 : 7. Quality Controlj: 7. 1 GFAA S Quality Contro l 7.1. 1 GFAA S Calibratio n Referenc e Standards . I

f acalibratio n curv e i s used , i t mus t h e verifie db y iise'o f

a t leas t on e ' calibratio n referenc e standar d(mad e fro ma referenc e materia l o r

othe r Independen t standar dmaterial ) a t

o r nea r tb e mid-rang e o f th e calibratio n curve . Th e calibratio n referenc e standar dmus t

b e measure dwithi n I Q percen t

of it' s tru e valu e fo

r th e curv e t o b e considere dvalid . Th e curv e mus t b e validate dbefor

e sampl e analyse s ar e performed . 7.1.2 . GFAA S Check

Standards , (a

) Ru n a chec k standai dan dacalibratio n blan k afte r approximatel y ever

y 1 0 sampl e injections , an da f th e en dofth e analytica l run . Thes e standard s ar e run , i n part , t o monito r th e lif e an dperformanc e ofth e graphit e tube . Lack of reproducibilityo r

asignifican t

chang e i n th e signa l fo

r th e chec k standar dindicate s :
. tha t th e graphit e tub e shoul db e replaced . Chec k standard s can b e th e mid-rang e calibratio n standar do r

th e referenc e standard . Th e result s ofth e chec k standar d shal l agre e withi n 1 0 percen t o f th e expecte d. value . I f not,.terminateth e analyses , correc t theproblem , recalibrat e th e instrument s an d reanalyz e al l sample s analyze dsubsequen t t o th e las f acceptabl e chec k

standard , analysis . (b ) Th e result s o

f th e calibratio n blan k

ar e t o agre e withi n thre e standar ddeviation s o f th e mea n blan k

value.

- I f not , repea t

th e ' analysi s tw o more time s an daverag e the . results . I f th e averag e i s not

withi n thre e standar ddeviation s ofth e backgroun dmean , terminat e th e analyses , correc t th e problem ; recalibrate , an dreanalyz e al l samples. : analyze dsubsequen t

t o th e las t

acceptabl e calibratio n blan k

analysis. ' '' ; 7:1. 3 ;'GFAA S Duplicat e Samples . Ru n on e duplit^tesampieforever y 20samples , (o r .. . bh S "^ersdurc e test , whicheveri s mor e frequent). Duplicat e sample s ar e brought ' "A

throug hth e whol e sampl e preparatio n an d. analytica l proces s separately : Duplicat e sample s shal l agie e withi n l b percent . 7.1. 4 "GFAA S Matri x Spiking . Spike d sample s shal l b e prepare dan danalyze ddail y

. t o erisili- e tha t

correc t procedure s ar e bein g followe dan dthat al l equipmen t

i s operatin g properly . Spike dsampl e recovery analyse s shoul dindicate arecovery for th e C r spik e d f betwee n 7 5 an d12 5 percent . Spike s ar e adde dprio r

t o an y sainpl e preparation . C r level s i n th e spike dsampl e shoul dprovid e final solutio n concentration s tha t fell withi n th e linear portio n o f

th e calibratio n curve , 7.1. 5 GFAA S Metho do f Standar d Additions.'Wheneve r

sampl e matri x problem s ar e suspecte dan dstandard/sampl e matri x matchin g i s no t

possibl e or'wheneve r ane w sampl e matri x f

s win g analyzed , th e metho dof

standar daddition s shal l b e Use d fo r th e analysi s o f

al l extracts . Sectio n 5.4. 2 o f Metho d1 2 (4 0 CFRpar t

60 . appendi x A ) specifie s aperformanc e tes t t o determin e i f th e metho do f

standar daddition s i s ' necessary . 7.1. 6 GFAA S Reagen t

Blank Samples . Analyz e aminimu mo f

on e matrix-matche d reagen t blan k (sectio n 5.2J! ) pe r

sampl e batc h t o determin e if

contaminatio n o r

memory effect s ar e occurring . Th e results shoul d agre e withi n thre e standar ddeviation s ofth e mea n blan k

value . 7. 2 IC P Qualit y Contro L 7.2. 1 IC P Interferenc e Check . Prepar e a n interferenc e chec k

solutio n t o contai n know n concentration s o

f interferin g element s tha t wil l provid e a

n adequat e tes t

ofth e correctio n factor s i n th e even t o f potentia l spectra l interferences . Tw o potentia l -• - interferences , iro n an dmanganese , ma y b e prepare da s 1,00

0 ug/m l an d20 0 fig/m

l solutions , respectively . Tb e solution s shoul d b e prepare di n dilut e HNO j (1- 5 percent) . Particular , car e mus t

b e take n t o ensur e tha t th e solution s and/o r

salt s use dt o prepar e th e solution s ar e o f

IGPgrad e purit y (i.e. , tha t n o measurabl e C r

contaminatio n exist s i n th e salts/solutions) . Commerciall y prepare d interferin g elemen t

chec k standard s ar e available . Verif

y th e interelemen t

correctio n factor s ever y thre e month s b y analyzin g th e interferenc e chec k

solution . Th e correctio n factor s ar e calculate daccordin g t o th e instrumen t

manufacturer' s directions . F f interelemen t

correctio n factor s ar e use d properly , n o fals e C r

shoul db e detected . 7.2: 2 IC P Calibratio n Referenc e Standards . Prepar e acalibratio n referenc e standar di n th e samealkalin e matri x a s th e calibratio n standards ; itshoul db e at leas t 1 0 time s th e instrumenta l detectio n limit . Thi s reference standar dshoul db e prepare dfro m adifferent C r stoc k solutio n sourc e tha n that use dfo r preparatio n of

th e calibratio n curv e standard s an di s use dt o verif y th e accuracy of th e calibratio n curve . Prio r t o sampl e analysis , analyz e a t

leas t on e reference standard . Th e calibratio n referenc e standar d rnus t b e measure dwithi n 1 0 percen t of it' s tru e value.fo r

th e curv e t o b e considere d valid . Th e curv e mus t

b e validate dbefore , sampl e analyse s ar e performed . 7.2. 3 ICP Chec k

Standards . Ru n achec k standar dan dacalibratio n blan k after ever y 1 0 samples , an da

t th e en dof

th e analytica l run . Chec k

standard s ca n b e th e mid-range. ' calibratio n standar do r

th e reference . . standard . Th e results O

f di e chec k standar d shal l agre e withi n 1 0 percen t ofth e expecte d value r if not , terminat e th e analyses , correct ; th e problem' , recalibrat e th e instrument , an d rerunall sample s analyze dsubsequen t t o th e las t

acceptabl e chec k

standar danalysis . Th e result s of th e calibratio n blan k

ar e t o agre e withi n thre e standar ddeviation s ofth e mean blan k value . I f not . repeat

th e analysi s tw o mor e time s an daverag e tb e results . If th e averag e i s no t

withi n thre e standar d deviation s ofth e backgroun dmean , terminat e th e analyses , correc t th e problem . recalibrate , an dreanalyze al l sample s analyze dsubsequen t

t o th e las t

acceptabl e

. calibratio n blank

analysis . '

. 7.2. 4 " IC P Duplicat e Samples . Analyz e on e duplicat e sampl e for

every 2 0 samples , (o r on e pe r sourc e tes t

whicheve r

i s mor e frequent). Duplicate sample s aro brought ' throug hth e whol e sampl e preparatio n an d analytica l process : Duplicat e sample s shal l agre e withi n 1 0 percen t 7.2. 5 IC P Reagen t Blan k Samples . Analyz e aminimu mof

on e matrix-matche d reagent blan k (sectio n 5.2.2 ) pe r

sampl e batc h t o determin e i

f contaminatio n o r

memor y effect s ar e occurring . Th e results shoul d agre e withi n thre e standar ddeviatibn s of th o mea n blan k

value. ' 7. 3 IC/PCRQuality Contro l 7.3. 1 IC/PCRCalibratio n Referenc e

- Standards . Prepar e acalibratio n referenc e standar di n th e sam e alkalin e matri x a s th e calibratio n standard s a

t aconcentratio n that i s a t o r near th e mid-point

ofth e calibratio n curve . Thi s referenc e standar dshoul db e prepare dfro

madifferent

Cr stoc k solutio n sourc e tha n tha t

use dfo r preparin g th e . calibratio n curv e standards . Th e reference standar di s use dt o verif

y th e accurac y of

th e calibratio n curve . Prio r

t o sampl e analysis , analyz e at leas t on e reference standard . Th e result s o f thi s analysi s o

f th e reference standar dmust.b e withi n 1 0 percen t of th e tru e valu e of

th e referenc e standar dfor th e "calibratio n curv e t o b e considere dvalid . Th e curv e mus t

b e validate dbefor

e sampl e analyse s ar e performed . 7.3. 2 IC/PC

RCheck Standards , (a) Ru

n th e calibratio n blanlTan dcalibratio n • standard s withth e fieldsample s a s describe d i n sectio n 5.5 . Fo r

eac hstandard , determin e th e peak area s (iecommended ) p r

th e peek heights , calculat e th e averag e response from th e duplicat e injections , an dplo t th e averag e respons e agains t

th e Cr+ 6 concentratio n i n (ig/1 . Th e individua l response s fo r eac h calibratio n standar ddetermine dbefor e an d afte r fieldsampl e analysi s mus t b e withi n 5 percen t o f th e averag e respons e fo

r di e analysi s t o b e valid . I

f th e 5 percen t

criteri a i s exceeded , excessiv e drif t and/o r • • instrumen t

degradatio n ma

y hav e occurred, . an dmus t b e correcte dbefor

e further analyse s ar e performed . • (b ) Employin g linea

r regression , calculat e a predicte dvalu e fo

r eac hcalibratio n standar d usin g th e averag e respons e fo r th e duplicat e injections . Eachpredicte dvalu e mus t b e withi n 7 percen t

ofth e actual valu e for . th e calibratio n curv e t o b e considere dacceptable . If no t acceptable , remake and/o r rerun th e calibratio n standards . I

f th e calibratio n curv e i s stil l unacceptable , reduc e th e rang e ofth e curve . . '. . ' , . . .' • . 7.3. 3 IC/PC

RDuplicate Samples . Analyz e on e duplicat e sampl e fo

r ever y 2 0 samples , ,(o r on e pe r sourc e test , whicheve r

i s mor e frequent) . Duplicat e sample s ar e brought ' ' . throug hth e whol e sampl e preparatio n an d• 

# I

i 

# i i 

# I i

• 

# I

# 1 498 6 Federal;Registe r / Vol . 60 ; No . 1 6 /

Wednesday , January 25

- 199 ^ /Rulei s ari dRegulation s P.4 1



### ml'- V.J j r iy' ' 

# ft :; * **. ' fiy

analytica l process . Duplicat e sample s shal l

agre e withi n 1 0 percent . 7.3. 4 ICP Reagent

Blan k Samples . Analyz e aminimu mo f

on e matrix-matche d reagent blan k (sectio n 5.2.2 ) pe r

sampl e batch t o determin e i f

contaminatio n o r

memory effect s ar e occurring . Th e result s shoul d- agre e withi n thre e standard , deviation s o f th e mea n blan k

value . 8. Emission Calculations Carry ou t th e calculations , retaining on e extr adecima l figure beyon dtha t o f th e acquire ddata . Roun dof

f figures after

final calculations . 8. 1 Tota l C r

i n Sample . Calculat e Mer, th e tota l (ig C r

i n eac hsample , a s follows : M o = (Vnj ) (Csj(F ) (D ) Eq.306- 1 where : Ym i = Volume of

impinge r content s plus ' rinses , ml. . C s = Concentratio n o f

Cr.i n sampl e solution , _igCr/fal. F= Dilutio n factor . = Volume of

aliquot after dilution, ml; Volum e of

aliquo t before dilution , m l D = Digestio n factor . . = Volume of

sample aliquot

after digestion, ml; Volum e o f

sampl e aliquo t

submitte d t o digestion , m l 8. 2 Averag e Dr

y Ga s Mete r

Temperatur e an dAverag e Orific e Pressur e Drop . Same a s Metho d5 , sectio n 6.2 . 8. 3 Dry.Ga s Volume . Volum e of Water Vapor , Moistur e Content.Sam e a s Metho d5 , section s 6.3 , 6.4 , an d6.5 , respectively. 8. 4 Cr Emissio n Concentration . Calculat e Co , th e C r

concentratio n i n th e stac k gas , i n mg/dsc mo n adr y basis , correcte dt o standar dconditions , a s follows : Cc^=(l0- 3 mg/(ig ) (Mo/V^u-, ) Eq . 306- 2 where : Vn>(sid)=Ga

s sampl e volum e measure db y th e * dr y ga s meter , correcte dt o dr y standar d conditions , dscm . 8. 5 Isokineti c Variation , Acceptabl e Results . Same a s Metho d5 , section s 6.1 1 en d 6.12 , respectively. • 9 . Bibliography 1 . "Tes t Method s for

Evaluatin g Soli d Waste , Physical/Chemica l Methods, " U . S . Environmenta l Protectio n Agenc y Publicatio n SW-846 , 2n dEdition , Jul y 1982 , 2 . Cox , X.B. , R.W . Linton , an dF.E . Butler . Determinatio n o f

Chromiu mSpeciatio n i n Environmenta l Particlesr— A Multitechniqu e Stud y of Ferrochrom e Smelte r

Dust . Accepte dfor

publicatio n i n Environmenta l Scienc e an dTechnology . 3 . Sam e a s Bibliograph y of Metho d5 , Citation s 2 t o 5 an d7 . 4 . Californi aAi r

Resource s Board, . "Determinatio n of

Tota l Chromiu man d Hexavalen t

Chromiu mEmission s from . - Stationary Sources. " Metho d425 , Septembe r 12,1990 . 5 . "Tes t Method s for

Evaluatin g Soli d Waste , Physical /

Chemica l Methods" , U . S . Environmenta l Protectio n Agenc y Publicatio n SW-846 , 3r dEdition , November . 198 6 a s amende db y Updat e I , November 1990 . Metho d306A—Determinatio n o f Chromiu m Emission s Fro

m Decorativ e an d Har

d Chromiu mElectroplatin g an dAnodizin g Operation s 1. Applicability and

Principle 1. 1 * Applicability . Thi s metho dapplie s to th e determinatio n o f

chromiu m(Cr

) i n emission s fro

mdecorativ e an dhar d chromiu melectroplatin g facilitie s an d anodizin g operations . Th e metho di s les s expensiv e an dles s comple x t o conduc t tha n Metho d30 6 o

f thi s appendix . Correctl y applied , th e precisio n an dbia s o f th e sampl e results wil l b e comparabl e t o thos e obtaine d withth e isokineti c Metho d30 6 of thi s appendix . Thi s metho di s applicabl e unde r ambien t moisture , air , an dtemperatur e conditions . 1. 2 Principle . A sampl e i s extracte dfrom th e sourc e a

t aconstan t

samplin g rat e -•• determine db y acritica l orific e an dcollecte d i n aprob e an dimpingers . Th e samplin g tim e a t th e samplin g travers e point s i s varie d accordin g t o th e stac k ga s velocit y at

eac h poin t t o obtai n aproportiona l sample : Th o concentratio n i s determine db y th e sam e analytica l procedure s use dIn Metho d30 6 of -thi s appendix : inductively-couple dplasm a emissio n spectrometry (ICP) , graphit e furnac e atomi c absorptio n spectrometr y (GFAAS) , o r io n chromatograph y wit hapost-colum n reactor (IC/PCR) . 2. Range, Sensitivity, Precision, and . Interferences Same a s Metho d306 , sectio n 2 of thi s ' appendix . • . 3.Apparatus . Note : Mentio n of

trad e names'o r

specifi c product s doe s hot

constitut e endorsemen t

b y th e Environmenta l Protectio n Agency . 3.1 ' 'Samplin g Train . A schemati c o f th e samplin g trai n i s show n i n Figur e 306A-1 . Th e component s of

th e trai n ar e availabl e commercially , bu t

som e fabricatio n an d assembl y ar e required. I

f Metho d30 6 equipmen t

i s available , th e samplin g trai n may b e assemble da s specifie di n Metho d30 6 of thi s appendi x an ddi e samplin g rat e o f th e mete r bo x se t at th e delt aH

@ specifie dfo

r th e calibrate dorifice ; thi s trai n i s the n . operate da s specifie di n thi s method . 3.1. 1 Prob e Nozzle/Tubin g an dSheath . Us e approximatel y 1/

4 in . inne r

diamete r (ID) glas s o r rigidplasti c tubin g abou t 8 in . lon g - wit hashort

90 ° ben da

t on e en dt o for

mth e nozzle . Grin dasligh t

tape r o n th e nozzl o en d before makin g th e bend . Attac hth e nozzl e t o flexibl e tubin g o

f sufficient lengtht o collec t asampl e fromth e stack . Us e astraigh t piec e of large r diamete r rigidtubin g (suc ha s meta l condui t o r plasti c wate r

pipe ) f o for ma . sheat htha t

begin s abou t

1 in . fromth e 90 ° ben do n th e nozzl e an dencase s th e flexibl e tubing . BILUN G COD E 6560-50- P

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. Tubing ) A :



### 0. 1 N NaO H o r 6. 1 NNaHC O
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### Maso n Ja r Impinger s Vacuu m Gaug e

(optional ) .'••'©•''• • n C L

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### 498 8 AFedei ^ IU^er/ i I 8- y . 3.1.2 , S-Typ e Pitot. Sam e a s Method2, : sectio n 3 (4 0 CF

Rpar t60 , appendi x A) . 3.1. 3 Sampl e Line . Us e thickwal l flexible plasti c tubing (e.g. , polyethylene , •... . '•- polypropylene , orpolyvinylchloride ) abou t ' A in . t o 3 / ain . I D to connectth e trai n components . A combination of rigi d plasti c - tubin g and thi n wal l flexibl e tubin g ma y b e -. A use d a s lon g as neithe rtubing collapse s whe n leak-checkin g th e train . Meta l tubin g canno t•

- b e used . . ;..,.-. . .yy. y.-r.-,:.y 3.1. 4 Impingers . One quar tcapacit y J.J-J-. "Mason " glas s canning jar s with vacuum sea l lid s ar e used . Thre

e impinger

s ar e required : th e firsti s forcollectin g th e absorbing , solution , th e secon d i s empt y and i s use d t o collec tan y absorbin

g solutio n carried over from th e firs

timpinger , and th e third contain s th e drying agent. Install bleak-tight. .inle tan d outle ttube s i n th e lid s of each impinge rforassembly with th e train . The ' tube s ma y b e made o

f approximately V* in . I D glas s o rrigi d plasti c tubing . Forth e inle t tub e o f th e fiiretimpinger, hea

tthe glas s o r plasti c tubin g and dra

w unti l th e tubin g separates . Cu

tthe ti p of

f unti l th e ti p orifice i s % 2 in . i n diameter . Whe

n fabricating th e firstimpinger , plac e the'tip orifice Vie in.. " above th e bottom o

f the ja rwhe n assembled . Forthe secon d impinger , th e inle ttub e nee d no tb e draw

n and sized , hu

tth e ti p shoul d b e approximately 2 in . above th e bottom o f th e jar . Th e inle ttub e ofth e thir d impinge r shoul d exten d to abou

tM : in . above th e bottom of th e jar . Locat e the outle ttub e en d ' of al l impingers abou

tV i in . beneat

h the bottom of th e lid . ' 3.1. 5 Manometer. Inclined/vertical type , : " o requivalen tdevice , as describe d i n sectio n -• ' 2. 2 of Method 2 (4 0 CF

Rpar t60 , appendix A) . " 3.1. 6 Critica

l Orifice ; Th e critica

l orifice i s asmal l restrictio n i n th e sampl e lin e A . (approximately Vie in . i n diameter ) tha ti s locate d upstrea

m o f th e vacuum pum p and sets th e sampl e rate a tabout0:75 cfm . A n A y : ..orific e can b e mad e o f

% i in : bras s tabtagy A • approximately* : %e'in.iong seale d insid e ; < •' . - large rdiameter , approximately Vi ain. , brass tubin g t d serv e as acritical orifice givin g a, • constan tsampl e flow. Materials othe rthan brass ca n b e use d t o constnic f th e critical . orifice a s lon g a s th e flo w throug h th e samplin g train i s approximately 0.7 5 cfrn . ' 3.1. 7 vConnectingHardware . Standardy pip e ai d fittings, V* in . or'i i in. , are use d . t o instal l th e vacuum pump and dr y gas . mete ri n th e samplin g trai n A : 3.1. 8 ...Pum

p Oiler . A glas s oi l reservoir - '_--•• with awic kmoimte d a

tth e vacuum pump inle tlubricate s th e pum p vanes . Th e oile r shoul d b e an inlin e typ e and no tvente d t o - th e atmosphere . .'*•....•

_3... J Jj j'•••:;•.
_ 3.1. 9 Vaciiun

aPump) G-Js

tMode l 0522 - V103-G18DX , o requivalent , capabl e o f deliverin g atleas t1. 5 cfin a t1 5 in . H g A:.".:.. : vacuum. ..'..'•

, .•••'>.•'•''.

' ';• -

. 3.1.1 0 OilTrap" ; A n empt y glas s oil ; : . reservoi rwithou twic ki s mounte d a tpump . outle tt o preventoi l from reachin g th e dr y gasmeter . >.

; •-. ; A. ' * : * 3.1.1 1 Dr

y Ga s Meter : A Rockwel l mode l 175- s tes tmeter , o requivalent,-vnt h a*":.'>- ' - . thermometerinstalle d to monito rmeter temperature . Th e dry. gas mete rmus tb e * capabl e of

measuring volum e t o withi n 2 . percent . • .]••.' 3. 2 .Saniple.Recoveiy . .

- A 3.2. 1 .Wash Bottles . Thes e ar e glas s o ry iner tplastic , 50 0 o r100 0 ml , with spra y tube . 3.2. 2 Sampl e Containers . Th e firstmaso n ja rImpingerof

th e samplin g train serve s a s th e sampl e container . A ne w li d an d plasti c wra p ar e substitute d fo

rthe impinge rinlet/ , outle tassembly . .:., - • , • *, ' -3. 3 * Analysis ; Same as Method 306 , - isection.3. 3 o f

thi s appendix . : 4jReagents «• • •. > y/"*-
. A'';•';_•'•-.••,
. v':-4:ir"Sam'pIing. Same a s Method 306 , ' sectio n 4. 1 ofthi s appendix . •' • :4.2.. - Sampl e Recovery . Samea s Method 306 , sectio n 4. 2 o

f thi s appendix . . 5 . Procedure'y .

* *.- . ••'-. • • 5. 1 'Sampling. . 511. 1 ftetestPreparation. 5.1.1. 1 Por

tLocation . Locat

e th e samplin g port s as specifie d i n sectio n 2. 1 o f Method 1 (4 0 CF Rpar t60 , appendi x A) . Us e atota l o f 24 samplin g points fo

rroun d ducts and 2 5 point s forrectangula

rducts . Locat

e th e samplin g points as specifie d i n sectio n 2. 3 of Method 1 (4 0 CF

Rpar t60 . Appendi x A) . Mar kth e pito tand samplin g prob e with thi n * strip s o f tap e t o permitvelocity an d sampl e traversing..For.duct

s les s tha n 1 2 in . i n . diameter , us e atota

l o f 1 6 points . ; ' .5.1.1. 2 Velocit

y Pressur e Traverse , (a

) Perfor m avelocity pressur

e traverse befor

e th e firstsampl e run . Figur e 306A- 2 ma

y b e use d to record velocity pressur e data . I f . testin g occur s ove rsevera l days , perfor

m the ' traverse a tthe beginning of

each day . Perfor

m velocity pressur

e traverses as specifie d i n sectio n 3 of

Metho d 2 (4 0 CF

Rpar t60 , appendi x A) , bu

trecor d onl y th e A

p (velocity

. , head) value s fo

reach samplin g point .
. (b ) Chec

kforcycloni c flow durin g th e first traverse to verif

y tha ti tdoe s notexist ; i f cycloni c flo w doe s exist , mak e sure tha tth e absolut e averag e angl e of misalignmentdoe s no texcee d 20° . I

f the averag

e angl e o f misalignmentexceed s 20 ° a ta n outle t location , instal l straightening vane s t o ' eliminate th e cycloni c flow. I f i tis-necessary to tes tan inle tlocatio n where cycloni c flow - exists , i tma

y notb e possibl e t o instal l straightenin g vanes . I

n thi s case , avariation

. ofth e alignmentmetho d mustb e used . Thi s -mus tb e approved.by the Administrator. BILUN G COD E &56O-50- P

4 * "

. . ; -

### Federal Registe r / Vol . 60 , No ; 1 6 /Wednesday ^ Januar y > 25 , "1995 7 Rule s and^Regulations : "• : 4 498 9 Plant . Date - Time Location Operators) - ' • . Beginning stac

ktemperature, °F

_ Endin g stac

ktemperature, °F-_ - Average stac

ktemperature, ° E P.4 4

Circl e one : Before Ru

n 1 Befor

e Ru n 2 Schematic o f Points Before Ru

n 3 AfterRu

n No . Traverse Point Numbe r Cycloni c Flo w Angl e (Degrees ) A

p V3 p . . 

### y2"px 5 mi n

(•/Ap) av y



### . = Numerical Minutes

• - ; • ' ' •

, ,

• • - Decimal Par to f Minut e x6 0 = . . Second s Whole .

Minutes - f Seconds = Sample Tim e

Av g . Av g - .

• ' -"•"*' ' - . . - .

••-A . C; 

### .Figur e 306A- 2 Velpcit yTravers e an d Poin t Sample'Tim e

•, " Calculation,Sheet /

BILUN O COD E 656O-50- C

## I3J- ;



# te. 3.:

i-•••'••-. •

! . r? - - f .

J A 

### 499 0 Federal Registe ri & Vpl . 60 , No . 1 6 •/;.Wednesday . Januar y 25 , 1995 / Rule s an dRegulation s - P.4 5

1 iJri " [fi 5 11 3 Poin t Samplin g Times . Sinc e th e samplin g rat e ofth e trai n i s hel dconstan t b y th e critical orifice , i t

i s necessary t o calculat e specifi c samplin g time s fo r eac hpoin t

i n -order t o obtai n aproportiona l sample

- I f al l samplin g ca n b e complete di n asingl e day , it-i s necessary t o calculat e th e poin t samplin g time s onl y once . I

f samplin g occur s ove r severaldays , recalculat e th e poin t sampl e time s eac hda y usin g velocity travers e dat a obtaine dearlier

i n th e day . Determin e th e averag e o f th e A p value s obtaine ddurin g th e velocit y travers e (Figure 306A-2) . Calculat e th e samplin g time s fo

r eac hpoin t

usin g Equatio n 306A-1 . Conver t th e decima l part s o f minute s t o seconds . I

f th e stac k diamete r i s les s than 1 2 in. , us e 7. 5 minute s in plac e o f 5 minute s i n th e equatio n an d1 6 samplin g points .

P' " 

# I • -v/Poin t n A p , . '

• . ' Minute s a t

poin t n= - - x 5 minute s Eq : 306A- l

• \ " /av g
II , -Jr' - Where : "

-n=Samplin g poin t

number . Ap=Velocit

y hea dmeasure db y Type- S pito t tube.in.Hj O . ,

~ . . 5;i.i. 4 Preparation.o f

Samplin g Train . Assembl e th e samplin g trai n a s show n i n Figur a306A-l . Secur e th e nozzle-line r assembl y t o th e sheat ht o preven t slippin g whe n sampling . Befor

e charging , rins e th e firs t maso n ja r

impinge r wit heithe r

0. 1 N sodiu mhydroxid e (NaOH ] o r 0. 1 N sodiu m bicarbonat e (NaHCOj) ; discar dth e solution . Pu t 25 0 m l of 0. 1 N NaO H o r

0. 1 N NaHCO

j absorbin g solutio n int o th e firs t maso n ja r impinger . Similarly , rins e th e secon dmaso n jar impinge r an dleav e empty . Pu t

silic age l int o th e thir dmaso n jar

impinge r unti l th e impinge r i s hal f full . Plac e th e impinger s int o an ic e bat han dchec k

t o ensur e tha t

th e lid s ar e tight . 5.1.1. 5 Trai n Lea

k Chec k Procedure . Wait unti l th e ic e ha s coole dth e impinger s befor e sampling . Next , seal th e nozzl e wit hafinge r covere db y apiec e o f

clear plasti c wra p an d tur n o n th e pump . Th e vacuu mi n th e lin o

betwee n th e pum p an dth e critica l orific e mus t b e a t leas t 15'in . Hg . Observ e an y lea k rat e o n th e dr y ga s meter . Th e lea k rat e shoul dno t

excee d0.0 2 cfm . 5.1. 2 Samplin g Trai n Operation . 5.1.2. 1 Recor

dal l pertinen t

proces s an d. samplin g data"o n th e dat ashee t (se e Figur e ' 306A-3) . Ensur e that

th e proces s operatio n i s suitabl e fo

r sampl e collection . BILUN G COO E 6860-50- PFedera l Registe r/Vol . -fHK''No!£l& ^ , : ; 499 1

— — ^ • • " • '—— - • ——— - ::± " -• • " ' • * • • -—-———-—-* • ...... . Plant Sampling Site Total C rcatch , MQ , /ig Av g dr y gas met e temp, T m ,°F Metercorrection factor, V m Metervorume , V f r; .

n r Barometri c press , P-^p . in . Hg Star tclockUm

e - Sto p cloc ktime • Date*. ; Ru n Ntimber Operatoz Stac kradius, r , in— • • , _ _ Avgsq/rt.Ap , (>fKp) tvg ,in . H 2 0
_ "Uc ktemp i T s , ° F ; ; ; Lea krat e before run , cfm

_ Lea krate afte rrun , cfm
_ 'Sto p metervolume , ft 3 . Star tmete rvolume , ft 3 - REMARKS :

Poin tNo .

- -

• : • .

• •



### - : ' " - Sample

(Min/Sec )
' '

- - Gas Meter

Temp(°F )

• '.'•-...

- •' .

/ •

• - • . • -. . Ccr= (M a ) _T

m + 460 ) PointNo .



### . .

' .- ' -' • Sample (Min/Sec ) Ga

s Mete r Temp (T )

: 

### -• -

- •' . 

## (499.8 ) (YJ

(VJ (P^J .bar

### kg/hz =(C-J . (0.000-i597 > (r z 

### ) (v'Sp) , (T s 

### + 460 ) 

## ""V

- (-* W(28.73 )

mg/cubi c meter,'(CQ.)- . (Optional ) kg/h r- 

## Figur e 306A-3 . Chromiu m Constan t Sampling Rat e Fiel d Dat a Sheet . .

BILUN G COD E 6560-60- C

### 499 2 Federa l Registe r/Vol . 60 , No , 16'. / Wednesday , January.25, . 199 5 / ..Rule s vanid

; i 

### Regulations;A.-L '

! I) i. i l l 5.1.2. 2 Plac e th e probe/nozzl e int o th e

duc t a t th e firs t samplin g poin t

an dtu mo n th e pump . A minimu mvacuu mof 1 5 in . H g o r 0.4 7 atmospher e betwee n th e critica l orific e an dpum p i s require dt o maintai n critica l flow. Sampl e fo

r the.tim e interval

previousl y determine dfor tha t point . Mov e t o th e secon dpoin t

an dsampl e fo

r th e tim e interva l determine dfor

tha t point ; sampl e al l point s o n th e travers e i n thi s manner . Kee p ic e aroun dth e impinger s durin g th e run . Complet e th e travers e an dtur n of f th e pump . Mov e t o th e nex t

samplin g por t

an drepeat . Recordth e fina

l dr y ga s mete r

reading . (NOTE : I f a n approximat e mas s emissio n rat e i s desired , recor dth e stac k temperature , befor e an dafte r th e run. ) 5;i.2. 3 Pos t

Tes t Lea k Check . Remov e th e prob e assembl y an dflexibl e tubin g fro mth e firs t impinger . Do not

cove r th e nozzle . Seal th e inle t tub e of th e firs t impinge r witha .finger covere db y clear

plasti c wra p an dturn o n th e pump . Th e vacuu mi n th e lin e betwee n th e pum p an dth e critica l orific e must.b e at

leas t 1 5 in . Hg . Observ e an y lea k rat e o n th e dr y ga s meter . I f th e lea k rat e exceed s 0.0 2 cfm , rejec t

th e run . I

f th e lea k rat e i s acceptable , take th e prob e assembl y an dimpinge r

assembl y t o th e sampl e • recovery area . N 5. 2 Sampl e Recovery . 5.2. 1 Containe r

No . 1 . (a) Afte

r th e trai n ha s bee n move dt o th e sampl e recovery area , disconnec t

th e tubing , tha t

join s th e first impinge r withth e second . (b ) Th e firs t

impinge r jar i s als o use da s th e sampl e containe r

jar . Unscre w th e li dfrom th e first impinge r jar . Lif t th e inlet/outle t tub e assembl y almos t

out of th e jar , an dusin g th e was hbottle , rins e th e outsid e o f th e impinge r ti p tha t wa s immerse di n th e impinge r ja r withextr aabsorbin g solution ; rins e th e insid e of

th e ti p a s well . (c ) Recove r th e secon dimpinge r

b y removin g th e li dan dpourin g an y content s fromth e secon dimpinge r int o th e first impinger . Rins e th e secon dimpinge r includin g th e insid e an doutsid e o f th e impinge r ste ma s wel l a s an y connectin g plasti c tubin g wit hextra.absorbin g solutio n an dplac e th e rinse int o th e first impinger . (d ) Hol dth e nozzl e an dconnectin g plasti c ; tubin g i n avertical , positio n s o tha t th e tubin g form s a"U. " Usin g th e was hbottle , partiall y fill th e tubin g wit hsamplin g reagent . Rais e an dlowe r th e en dof

th e plasti c tubin g several time s t o caus e th e reagen t t o Contact th e major portio n o f

th e interna l part s of

th e assembl y thoroughly ; D o no t rais e th e -•'.* ' solutio n leve l to p hig ho r

par t of-the sampl e wil l b e lost . Plac e th e nozzl e end.o f th e . assembl y over

th e mout ho f

th e first impinger. : ja r (sampl e container ) an delevat e th e plasti c - tubin g s o that

th e solutio n flows rapidly ou t o f th e nozzle . Perfor

mthi s procedur e thre e times . Next , repea t

th e recover y procedur e . bu t allo w th e solutio n t o flo w rapidl y out th e ope n en do

f th e plasti c tubin g iiito'th e first impinge r jar . (e) Plac e apiec e of

clear plasti c wra p ove r

• th e moutho

f th e first impinge r jar . Us e a standar dli dan dban dassembl y t o sea l th e jar . Label th e ja

r with , th e sampl e numbe r an d mar k th e liqui dleve l t o gaug e an y losse s durin g handling . 5.2. 2 Containe r

No . 2 (Reagent

Blank) . Plac e approximatel y 50 0 m l o f th e 0. 1 N NaO H o r 0. 1 N NaHC0 3 absorbin g solutio n i n alabele dsampl e container . 5.2: 3 Sampl e Filtratio n fo r IC/PCR . I f th e sampl e i s t o b e analyze dfo r Cr* 1 * 6 b y IC/PCR , .

- i t mus t b e filtere dimmediatel y followin g recover y a s describe di n sectio n 5,2. 3 of . * A Method.30 6 of.thi s appendix.

- 'A'

- 5. 3 Analysis . Sampl e preparatio n an d analysi s procedure s ar e identica l t o Metho d 306 , sectio n 5. 3 o

f thi s appendix . 6: Calibration • 6i l Dr y Ga s Meter , (a

) Dr y ga s mete r calibration s ma

y b e performe db y eithe r

th e manufacturer , afir

mwh o provide s calibratio n services , o r

th e tester . The.dr y ga s mete r calibratio n coefficient

(Ym ) mus t be . determine dprio r

t o initia l us e o f

th e meter , an dmus t b e checke dfollowin g eac hfield .(b ) I f th e dry ga s mete r

i s new , th e manufacture r

wil l hav e specifie dth e Y mfo r th e meter . Th e manufacture r may als o hav e include dacalibratio n orific e an dadat ashee t withth e mete r

tha t ma y b e use dfor

A ' calibratio n purposes . Th e shee t wil l specify , astandar dcubi c foot

volum e an dasampl e time , an dthes e value s wer e determine d whe n th e orific e wa s use dt o se t th e initial . Y mfo r th e meter . Th e Y mmay b e checke db y disconnectin g th e critica l orific e inth e . . samplin g trai n an dreplacin g i t wit hth e < ' calibratio n orifice . Th e inle t sid e o f the . . calibratio n orific e i s ope n t o th e atmospher e an di s no t reconnecte dt o th e sampl e train . Recordth e initia l dr y ga s mete r volum e an d mete r temperature . Tur n o n th e pum p an d' operat e i t fo r th e numbe r

o f minute s specifie db y th e manufacturer' s dat asheet . Sto p th e pum p an drecor dth e final dr y ga s mete r volum e an dtemperature . Subtrac t th o start volum e fromth e sto p volum e an d averag e th e temperatures . Chec k th e Y mfo r • th e dr y ga s mete r

afte r th e test-b y usin g th e followin g equation : . • *•.-•• • '* "


### Y = Ft. 3 

### n*(T m 

### +460 ) 17.647(Ft 3 p 

### ,)(P bar 

### )
Where : Ft. 3 m =Cubi c fee

t give n b y mete r

manufacture r T m =Temperatur e of

mete r i n degree s Fahrenhei t Ffpr-iCubi c feet

fromdr y ga s meter , pos t

tes t PbM=Barometric pressur e i n inche s of

. mercur y Compare th e Y mjus t

calculate dwithth e Y mgive n b y th e manufacturer : '...-.-. . 

### Y ^ (manufacturer

) Y,, , (calculatedafte

r test) I f thi s valu e i s betwee n 6,9 5 an d1,05, : th e Y mof th e mete r i s acceptable.'I f

th e valu e lie s outsid e th e specifie drange ; th e tes t serie s shal l eithe r

b e voided , o r

calculation s for

th e tes t serie s shal l b e performe dusin g v whicheve r

mete r coefficien t

valu e (i.e., before an dafter ) that give s th e lowe r

valu e of total sampl e volume . Retur n th e dr y ga s mete r t o th e manufacture r

fo r recallbration . Th e calibratio n may als o b e conducte da s specifie di n sectio n 5.3. 1 o r sectio n 7 o

f Metho d5 (4 0 CF

Rpar t 60 , appendi x A) , excep t tha t i t i s onl y necessar y t o chec k th e calibratio n at

a n approximat e flowrat e of 0.7 5 cfm . th e calibratio n o f th e dr y gais mete r mus t b e checke dafter

eac hfiel dus e i n th e

. sam e manner...If

th e value s of

Y mobtaine d before an dafter

ates t series , differ

b y more . •

, tha n 5% , th e tes t

serie s shal l eithe r

b e . voided , o r

calculation s for

th e tes t serie s J- '-. shal l b e performe dusin g whicheve r mete r coefficient valu e (i.e. , before o r

after ) that • give s th e lowe r

valu e o f tota l sampl e volume. 1 6. 2 GFA A Spectrometer . Same'a s Metho d 306 , sectio n 6. 2 of

thi s appendix . ' ' : .6. 3 ICP Spectrometer . Sam e a s Metho d• • 306 , sectio n 6. 3 of

thi s appendix . 7. Quality Control

. Same a s Metho d306 , sectio n 7 ofthis ' J-. appendix . A A:-. . : , ... . . • • •' J j
- 8. Calculation's '. - " ' ' .'•••- • .8,1 ' Pollutan t

Concentration . Calculat e A . . Cc , th e Cr concentratio n i n thestac k gas , in ' . mg/dsc mo n adr y basi s a s follows:; .",',',-- ,

-C r 

### (499.8)(Y m 

### )(V m 

### )(P^)y: ; ;;Eq.306A- 2 A

where : Mcr=Amount o f C r i n sampl e fromMetho d 30 6 of thi s appendix , Eq . 306-1 , ng . Tm=Dry.ga s mete r temperature/°F. "_ '

### Federal Registe rI Vol . 60 , No . 1 6 /

Wednesday , Januar y 25 , 199 5 /Rule s an dRegulation s 499 3

. Ym=Pr y ga s mete r

correctio n factor , 'dimensionless . V m =Dr y ga s mete r volume , ft 3

. Pb«r=Barometri c pressure , in . Hg , 8. 2 Approximat e Mas s Emissio n Rat e (Optional) . Calculat e a n approximat e mas s emissio n rat e o f

C r i n kg/h r usin g th e followin g equation : kg/h r = (0.(XX)1597)(G Cr )(r 2 )(VA?) avg . (T s + 460 ) ^(P bar )(28.73 ) Eq.306A- 3

where : r=Radiu s o f

stack , in . (VAp) av? =Averag e o f

VA p values . Ts=Stac k

temperature , °F . , Pb«r=Barometri c pressure , in . Hg . Ccr=Concentratio n o f

Cr , mg/dscm . Note : Th e emissio n rat e calculate d"Usin g Equatio n 306A- 3 i s base do n a n assume d moistur e conten t

o f 2%- . 9. Bibliography • . 1 , Clay , F.R . Memo , Impinge r Collectio n Efficiency—Maso n Jar s vs . Greenburg-Smit h Impingers , Dec . 1989 . 2 . Segall , R.R. , W.G . DeWees , F.R . Clay , an dJ.W . Brown . Developmen t o f Screenin g Method s fo r

Us e i n Chromiu mEmission s Measuremen t

an dRegulation s Enforcement . In : Proceeding s ofth e 198 9 EPA/A&WM A Internationa l Symposium—Measuremen t o f Toxi c an dRelate dAi r

Pollutants , A&WM A Publicatio n VIP-13 , EP A Repor t No . 600/9

- 89-060 , p . 785 . .3 . Clay , F.R . Chromiu mSamplin g Method . In : Proceeding s ofth e 199 0 EPA/A&WM A Internationa l Symposium—Measuremen t o f Toxi c an dRelate dAi r

Pollutants , A&WM A Publicatio n VIP-17 , EP A Repor t No . 600/9

- 9&-026 . p . 576 . ' '4. Clay , F.R . Propose dSamplin g Metho d 306 A fo r th e Determinatio n o f

Hexavalen t Chromiu mEmission s fromElectroplatin g an dAnodizin g Facilities . In : Proceeding s o f th e 199 2 EPA/A&WM A Internationa l Symposium—Measuremen t o f Toxi c an d Relate dAir-Pollutants , A&WM A Publicatio n VIP-25 , EP A Repor t

No . 600/R-92/131 , p . 209 . Metho d 306-B— Surfac e Tensio n Measuremen tan d Recordkeepin g fo r : Chromiu m Platin g Tank s Use da t Electroplatin g an d Anodizin g Facilitie s 1. Applicability and

Principle 1. 1 Applicability . Thi s metho di s applicabl e t o al l decorativ e platin g an d anodizin g operation s wher e awettin g agen t i s use di n th e tan k

a s th e primar y mechanis m fo r reducing emission s fromth e surfac e o f th e solution . 1. 2 Principle . Durin g a n electroplatin g o r anodizin g operation , ga s bubble s generate d durin g th e proces s ris e t o th e surfac e o f th e tan k liqui dan dburst . Upo n bursting , tin y droplet s o f

chromi c aci dbecom e entraine di n ambien t air . Th e additio n o f

awettin g agent , t o th e tan k

bathreduce s th e surfac e tensio n o f th e liqui dan ddiminishe s th e formatio n o f thes e droplets . : 2. Apparatus 2. 1 Stalagmometer . An y commerciall y ' availabl e stalagmomete r o r equivalen t

surfac e tensio n measurin g devic e ma y b e use dt o measur e th e surfac e tensio n o f th e platin g o r anodizin g tan k

liquid . 2. 2 Precise r

tensiometer . A Precise r tensiomete r

ma y b e use dt o measur e th e surfac e tensio n o f

th e tan k liqui dprovide d th e procedure s specifie di n AST M Metho dD 1331-89 , Standar dTes t Method s fo r

Surfac e an dInterfacia l Tensio n o f Solution s o f Surfac e Activ e Agent s (incorporate db y reference—se e § 63.14 ) ar e followed : 3. Procedure 3. 1 Th e surfac e tensio n o f th e tan k bat h ma y b e measure db y usin g aPrecise r tensiometer , astalagmomete r o r an y othe r devic e suitabl e fo r

measurin g surfac e tensio n i n dyne s pe r

centimeter . I f

th e Precise r tensiomete r

i s used , th e instruction s give n i n AST M Metho dD 1331-89 , Standar dTes t Method s fo r

Surfac e an dInterfacia l Tensio n o f Solution s o f

Surfac e Activ e Agent s (incorporate db y reference—see § 63.14 ) mus t b e followed . I f

astalagmomete r

o r othe r , devic e is-use dt o measur e surfac e tension , th e instruction s tha t

cam e wit hth e measurin g devic e mus t

b e followed . • 3. 2 . (a ) Measurement s ofth e bat hsurfac e tensio n ar e don e usin g aprogressiv e syste m whic hminimize s th e numbe r o f surfac e
, tensio n measurement s require dwhe n th e prope r surfac e tensio n i s maintained . Initially , measurement s mus t b e madeev'er y 4 hour s o f

tan k operatio n fo r

th e first 4 0 hour s o f

tan k operatio n afte r

th e complianc e date . Onc e ther e ar e n o exceedance s durin g 4 0 hour s o f

tan k operation , measurement s ma y b e conducte donc e ever y 8 hour s o f tan k operation . Onc e ther e ar e n o exceedance s durin g 4 0 hour s o f

tan k operation , measurement s ma y b e conducte donc e ever y 4 0 hour s o f

tan k operatio n o n a n on-goin g basis , unti l a n exceedanc e occurs . Th e maximu mtim e interva l fo r measurement s i s onc e ever y 4 0 hour s o f tan k operation . (b ) I f ameasuremen t

o f th e surfac e tensio n o f th e solutio n i s abov e th e 4 0 dyne s pe r centimete r

limit ; th e tim e interva l reverts bac k t o th e origina l monitorin g schedul e o f onc e ever y 4 hours . A subsequen t decreas e i n frequency woul dthe n b e allowe daccordin g t o th e previou s paragraph . 4. Recordkeeping 4. 1 Lo g boo k

o f surfac e tensio n measurement s an dfum e suppressan t ' additions . Th e surfac e tensio n ofth e platin g o r anodizin g tan k

bat hmus t

b e measure da s specifie di n sectio n 3.2 . Th e measurement s mus t b e recorde di n th e lo g book . I n additio n t o th e recor do f

surfac e tensio n measurements , th e frequency o f fum e suppressan t

maintenanc e addition s an dth e amoun t o f fum e suppressan t

adde ddurin g eac hmaintenanc e additio n wil l b e recorde d i n di e lo g book . Th e lo g boo k wil l b e readily availabl e fo r

inspectio n b y regulator y personnel . 4. 2 Instruction s fo r

apparatu s use di n measurin g surfac e tension . Als o include d wit hth e lo g boo k

mus t b e acop y o f

th e instruction s fo r

th e apparatu s use dfo r . measurin g th e surfac e tensio n ofth e platin g o r anodizin g bath . I f

aPrecise r

tensiomete r

i s used , acop y o f

AST M Metho dD 1331^89 , . Standar dMethod s fo r

Surfac e an dInterfacia l Tensio n o f

Solution' s o f

Surfac e Activ e Agent s (incorporate db y reference—se e § 63.14 ) mus t

b e include dwit hth e lo g book . [F RDoc . 95-6 5 File d1-24-95 ; 8:4 5 am ] BILUN G COO E 6560-60- P